CN117617833A

CN117617833A - Hinge device

Info

Publication number: CN117617833A
Application number: CN202311639219.1A
Authority: CN
Inventors: 周杰; 万科学
Original assignee: Dishe Intelligent Technology Wuhan Co Ltd
Current assignee: Dishe Intelligent Technology Wuhan Co Ltd
Priority date: 2023-11-30
Filing date: 2023-11-30
Publication date: 2024-03-01

Abstract

The invention discloses a hinge device which is connected with a cleaning head and a handle of a floor washing machine, and comprises a joint main body, a rod body, a transverse rotating assembly and a longitudinal rotating assembly; the joint main body comprises a transverse pipe with two ends extending out and a vertical pipe perpendicular to the transverse pipe and extending out from only one end of the transverse pipe; one end of the rod body is connected with a handle of the floor washing machine, and the other end of the rod body is connected with a vertical pipe of the joint main body; the transverse rotating assembly comprises a left fixing part and a right fixing part, is detachably connected with two ends of the transverse tube, and is detachably connected inside the shell; the joint main body and the shell realize at least two-point butt-lockable coupling through the transverse rotating assembly; the rod body and the vertical pipe of the joint main body are rotated relatively through the vertical rotating assembly; thereby enabling the handle to rotate relative to the cleaning head in two mutually perpendicular axial directions through the transverse rotating assembly and the longitudinal rotating assembly.

Description

Hinge device

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a hinging device for a cleaning head of a floor washing machine.

Background

Floor cleaning tools used by people in early days are brooms, mops, floor wipers and the like, which mainly rely on manual operation by people to complete the cleaning work. With the progress of technology, the requirements of people on floor cleaning tools are gradually increasing, and the first dust collector is powered by electricity and sucks garbage, dust and the like on the floor by generating negative pressure. Classified from the means of cleaning and the flow paths of small particle waste and large particle waste, this class of technology is commonly grouped as the air dust circulation technology. However, due to the limitation of the working principle, the dust collector cannot clean some garbage and stains firmly attached to the ground, so that a new water and dust circulation type floor cleaning machine is provided, the cleaning cylinder is driven to wipe the ground through the operation of the motor, and meanwhile, a water supply system and a water tank are also arranged in the floor cleaner to clean the cleaning cylinder, so that the ground is perfectly cleaned.

Cleaners employing both air and water dust circulation techniques involve the problem of the cleaning head being hinged to the cleaner body part.

Chinese patent CN213910036U discloses a hinge structure, a cleaning head and a cleaning tool based on water and dust circulation. The hinge structure includes: a first housing including a mounting groove; the first elastic locking device is arranged in the first shell and comprises a group of first bosses, and the first bosses extend out of the first shell through the mounting grooves; the push rod is arranged in the first elastic locking device and comprises a second boss and a first wedge-shaped base opposite to the second boss, and the second boss penetrates through the first elastic locking device and stretches out of the first shell; the second shell is connected with the first shell; the second elastic locking device is arranged in the second shell and comprises a second wedge-shaped base, and is opposite to the first wedge-shaped base of the push rod and used for converting the horizontal movement of the push rod into the vertical movement of the second elastic locking device; and the rotating shaft is arranged on the first shell and/or the second shell. Through hinge structure, during locking, handle pole and cleaning head are fixed completely, in the prior art, must just can let second elasticity locking device disengage the second casing after first elasticity locking device breaks away from first casing, thereby can nimble articulated between cleaning tool's cleaning head and the pole setting, be single-point butt locking substantially between first elasticity locking device and the first casing, the locking department is directly exposed and is close articulated department at first casing, locking process and disengaging process can produce the rattling sound that is relatively harsher, greatly influence user experience, after the unblock, because connecting device does not have limit function, but the handle pole back-and-forth swing or left and right turn, can't provide effectual damping sense, the condition of rocking appears easily.

Chinese patent CN211381127U discloses a joint assembly of a cleaning integrated machine and the cleaning integrated machine thereof, the cleaning integrated machine comprises a cleaning tool for cleaning and a manual operation part, the manual operation part is installed and connected with the cleaning tool through the joint assembly, the cleaning tool comprises an installation shell, and the joint assembly comprises a joint head; the joint head comprises a joint clamping part and a joint rotating part, wherein the joint clamping part is in clamping installation fit with the lower end part of the manual control part, two sides of the joint rotating part are respectively installed on the installation shell in a relatively rotatable manner, the joint clamping part is in sleeve joint installation on the joint rotating part in a relatively rotatable manner, the size of a clamping tooth of the joint clamping part is determined by the diameter of a main pipe of the joint clamping part, the matching position of the clamping tooth and the cleaning head cannot be determined according to different cleaning head configurations, the rotating matching part of the clamping part is not protected, and liquid and fine particle impurities easily enter gaps to cause unsmooth rotation; the installation spacing arch of joint rotation portion sets up in the cleaning head casing and its corresponding position and is in the lowest department of whole joint rotation portion, thereby is piled up by hydrops and fine particle rubbish entering easily and causes the fore-and-aft rotation to be unsmooth, and the diameter size of the horizontal stay tube of joint rotation portion is not fully utilized to this kind of structure moreover, can cause the too big size of cleaning head joint assembly part, lets the size of whole cleaning head hardly accomplish small and exquisite, light.

Disclosure of Invention

In view of the foregoing, there is now provided a hinge assembly for a floor scrubber cleaner head that aims to solve the problems of the prior art.

The specific technical scheme is as follows:

a hinge assembly for connecting a cleaning head with a housing and a handle of a floor scrubber, the hinge assembly comprising:

the connector body is T-shaped and comprises a transverse pipe with two ends extending out and a vertical pipe perpendicular to the transverse pipe and extending out from only one end of the transverse pipe;

one end of the rod body is connected with the handle, and the other end of the rod body is connected with the vertical pipe of the joint main body;

the transverse rotating assembly comprises a left fixing part and a right fixing part, is detachably connected with two ends of the transverse tube and is detachably connected inside the shell, and the joint main body and the shell realize at least two-point butt-lockable coupling through the transverse rotating assembly;

the longitudinal rotating assembly enables the rod body to rotate relative to the vertical pipe of the joint main body through the longitudinal rotating assembly;

the handle can rotate relative to the cleaning head in two mutually perpendicular axial directions through the transverse rotating assembly and the longitudinal rotating assembly.

Further, the vertical rotating component comprises an inner layer limiting part and an outer layer protecting part, when the rod body is sleeved at the upper end of the vertical pipe, the inner layer limiting part is buckled at the joint of the rod body and the vertical pipe, and the outer layer protecting part is buckled at the periphery of the inner layer limiting part.

Further, the lower end of the rod body is provided with an annular upper boss, the upper end of the vertical pipe is provided with an annular lower boss, and when the lower end of the rod body is sleeved at the upper end of the vertical pipe, the annular upper boss and the annular lower boss are mutually meshed to form an annular bulge.

Further, the inner layer limiting part comprises a front clamp and a rear clamp, the front clamp and the rear clamp are mutually buckled to form an annular channel capable of accommodating the annular protrusions, a plurality of positioning grooves are formed in the side wall of the annular channel, positioning protrusions corresponding to the positioning grooves one to one are arranged on the annular protrusions, and when the rod body and the joint main body rotate to an initial state, the positioning protrusions are correspondingly inserted into the positioning grooves.

Further, a rotation driving groove is further formed in the front clamping hoop, a driving protrusion is arranged on the side wall of the main body of the rod body, and when the annular protrusion is located in the annular channel, and the joint main body and the rod body are in an initial state, the driving protrusion is just located in the rotation driving groove.

Further, when the front clip and the rear clip are fastened to each other, the driving protrusion drives the rotation driving groove to rotate together to drive the whole inner layer limiting part to rotate when the rod body and the joint main body rotate with each other.

Further, the outer protective part comprises a front protective shell and a rear protective shell, wherein the front protective shell and the rear protective shell comprise a first protective wall, a first step ring, a second step ring and a second protective wall, and an annular cavity capable of accommodating the inner limiting part is formed between the front protective shell and the rear protective shell when the front protective shell and the rear protective shell are mutually buckled.

Further, the second step ring of the front protecting shell is provided with a clamping hole, the second step ring of the rear protecting shell is provided with a clamping protrusion, and when the front protecting shell is correspondingly buckled with the rear protecting shell, the clamping protrusion is just inserted into the clamping groove.

Further, the first protection wall of the front protection shell is provided with a limiting protrusion, the top surface of the cleaning head is provided with a limiting notch, and when the rod body rotates to a limiting state around the transverse rotating assembly, the limiting protrusion just enters the limiting notch.

Further, the left fixing portion and the right fixing portion are symmetrically distributed on the left side and the right side of the transverse tube of the joint main body, and the left fixing portion and the right fixing portion can be connected with the shell through bolts.

Further, the left fixing portion and the right fixing portion each comprise an abutting tongue assembly and a hinging seat, the two abutting tongue assemblies are respectively arranged on the lower sides of two ends of the transverse tube of the connector main body, the two hinging seats are sleeved on the two ends of the transverse tube of the connector main body, and the abutting tongue assemblies are in abutting connection with the corresponding inner cavity side walls of the hinging seats.

Further, the butt tongue subassembly includes spacing seat, butt tongue and spring, the chamber of holding has been seted up to spacing seat top surface, the opening has been seted up to the diapire that holds the chamber, spacing seat both sides pass through the bolt with connect the mount pad on the horizontal pipe of main part to be connected, the spring with the butt tongue all set up in hold in the chamber, the upper end of spring with connect the horizontal union coupling of main part, the lower extreme of spring with the upper end of butt tongue is connected, the lower extreme of butt tongue is via the opening stretches out hold after the chamber with articulated seat inner chamber lateral wall butt.

Further, the hinge seat comprises an abutting wall, a stabilizing protrusion for limiting the stabilizing rod body, a limiting wall, a sleeving wall, a first fixing seat and a second fixing seat;

the sleeve joint wall is sleeved on the periphery of the transverse pipe hinge part at one end of the joint main body;

a sliding cavity is formed between the limiting wall and one end side wall of the joint main body;

the abutting tongue component is completely positioned in the sliding cavity, and the abutting tongue abuts against the abutting wall;

the stabilizing protrusion is arranged on the inner side of the abutting wall;

when the rod body clockwise rotates to a limit state around the axis of the lower end of the joint main body, the abutting tongue just passes through the stabilizing protrusion, the first fixing seat and the second fixing seat are respectively arranged on the outer side of the sleeve joint wall and the outer side of the abutting wall, and bolt holes are formed in the first fixing seat and the second fixing seat.

Further, the radian in the sliding cavity is designed to be gradually changed, the radian in the anticlockwise direction of the left side of the stabilizing protrusion is gradually increased, and when the rod body rotates anticlockwise around the axis of the lower end of the joint main body, the compression amount of the spring is gradually increased until the abutting tongue abuts against the abutting wall.

In summary, the beneficial effects of this scheme are:

according to the hinge device provided by the invention, the left fixing part and the right fixing part of the transverse rotating assembly are used for realizing the butt locking coupling of at least two points of the transverse tube of the joint main body and the shell of the cleaning head, and the left fixing part and the right fixing part of the transverse rotating assembly wrap the two ends of the transverse tube of the joint main body, so that the occurrence of unsmooth rotation caused by the fact that external impurities enter the joint of the transverse tube and the left fixing part and the right fixing part is prevented. Simultaneously, the rod body connected with the handle can rotate relative to the vertical pipe of the joint main body through the longitudinal rotating assembly, so that the handle of the floor washing machine can rotate relative to the cleaning head in two mutually perpendicular axial directions through the longitudinal rotating assembly and the longitudinal rotating assembly. When the user uses the floor washing machine, the user can operate more conveniently when meeting the need of rapidly and flexibly turning the cleaning head, and the cleaning head can flexibly reach each cleaning area under the control of the handle of the floor washing machine.

According to the hinge device provided by the invention, the joint of the joint main body and the rod body is buckled through the inner layer limiting part, so that the joint main body and the rod body have the degree of freedom of mutual rotation, and the joint is wrapped through the outer layer protecting part, so that the phenomenon of unsmooth rotation caused by external impurities entering the joint is prevented. The cleaning head hinging device has the effect of protecting the joint of the joint main body and the rod body from entering external impurities to prevent rotation.

According to the hinge device provided by the invention, the positioning protrusion is arranged on the annular protrusion, and the positioning groove is arranged in the annular groove, so that when the rod body and the joint main body rotate circumferentially, the positioning protrusion deforms the annular groove to increase the rotating damping sense, and when the rod body rotates to a corresponding position, the positioning protrusion enters the positioning groove to limit the random rotation of the rod body, and secondly, when the rod body rotates around the lower end of the joint main body, the rod body can easily rotate within a range through the abutting wall with the changeable radian, and the rotation of the rod body is limited when exceeding a preset range. The hinge device provided by the invention has the effects of increasing the damping of the rod body after unlocking the rod body and preventing the rod body from easily shaking.

Drawings

FIG. 1 is a schematic view of the articulating mechanism of the present invention mounted to a cleaning head;

FIG. 2 is a front view of the hinge assembly of the present invention;

FIG. 3 is a top view of the hinge assembly of the present invention;

FIG. 4 is a bottom view of the hinge assembly of the present invention;

FIG. 5 is a planer view of FIG. 2A;

FIG. 6 is a stepped planer view of FIG. 4B;

FIG. 7 is an enlarged view of a portion of the hinge assembly of the present invention at C in FIG. 5;

FIG. 8 is an enlarged partial view of another state of the hinge device of the present invention at C in FIG. 5;

FIG. 9 is a perspective view of the hinge assembly of the present invention;

FIG. 10 is a view of the planer of FIG. 9 in the direction D;

FIG. 11 is a plan view of the E-direction of FIG. 9;

FIG. 12 is a perspective view of the hinge assembly of the present invention with the left and right hinge brackets and front and rear housings hidden;

FIG. 13 is an exploded view of the hinge assembly of the present invention;

fig. 14 is an exploded view of the upper half of the hinge assembly of the present invention.

Description of the drawings:

1. a cleaning head; 1a, limiting notch;

10. a joint body; 101. a standpipe; 1011. an annular upper boss; 102. a transverse tube; 1021. a stop collar; 1022. a mounting base; 103. reinforcing ribs;

20. a rod body; 201. an annular lower boss; 2011. positioning the bulge; 202. a rod body; 2021. driving the protrusion;

30. abutting the tongue component; 301. a limit seat; 302. abutting the tongue; 303. a spring;

40. a left hinge seat; 401. abutting the wall; 4011. a stabilizing protrusion; 402. a limiting wall; 403. a sleeve joint wall; 405. a first fixing seat; 406. the second fixing seat;

40', right hinge base; 401', abutment wall; 4011', stabilizing projections; 402', a limiting wall; 403', socket wall; 405', a first holder; 406', a second holder;

50. a front clamp; 501. a butt joint part; 502. fixing the column; 503. a positioning groove; 504. an annular channel; 505. a rotary driving groove;

50', rear clip; 501', a butt joint part; 502', fixing columns; 503', positioning slots; 504', annular channels;

60. a front protective case; 601. a first protective wall; 6011. a limit protrusion; 602. a first step ring; 6021. a fixing hole; 603. a second step ring; 6031. a clamping hole; 604. a second protective wall;

60', rear shield; 601', a first protective wall; 6011', limit protrusions; 602', a first step ring; 6021', fixing holes; 603', a second step ring; 6031', snap-fit projections; 604', a second guard wall.

Detailed Description

The claims hereof are to be read in further detail with reference to specific embodiments and to the accompanying drawings, in which the embodiments described are only some, but not all embodiments of the invention. Based on the embodiments of the present invention, one of ordinary skill in the art would recognize that all other embodiments obtained without taking any inventive effort are within the scope of the present invention.

It should be understood that, in the embodiments of the present invention, all directional terms, such as "upper", "lower", "left", "right", "front", "rear", etc., are used for convenience in describing the present invention only and are not intended to be limiting, since the directional terms, such as "upper", "lower", "left", "right", "front", "rear", etc., are based on the orientation, positional relationship shown in the drawings or the orientation or positional relationship in which the inventive product is conventionally put in use. Merely to explain the relative positional relationship, movement, etc. between the components shown in the drawings, the directional indication may be changed when the specific posture is changed.

Furthermore, ordinal words such as "first," "second," and the like in the description of the present invention are used for distinguishing purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features indicated. The features defining "first", "second" may be explicit or implicit and at least one of the features. In the description of the present invention, the meaning of "plurality" means at least two, i.e., two or more, unless otherwise specifically defined; the meaning of "at least one" is one or more.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly, and may, for example, be defined as having a relatively fixed positional relationship between components, as having a physically fixed connection between components, as being detachably connected, or as a unitary structure; the connection can be mechanical connection or electric signal connection; can be directly connected or indirectly connected through intermediate media or components; the communication between two elements or the interaction relationship between two elements is not limited by the specification, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to the specific circumstances except that the corresponding function or effect cannot be achieved when other understanding is made.

The invention will be further illustrated, but is not limited, by the following examples.

Fig. 1 is a schematic view showing the attachment of the hinge device of the present invention to a cleaning head, and fig. 9 is a perspective view showing the structure in which a rod body 20 is connected to the cleaning head 1 through a joint body 10.

Fig. 2 is a front view of the hinge device of the present invention, fig. 5 is a plan view of fig. 2 from a direction, fig. 7 is a partially enlarged view of fig. 5 at C, fig. 8 is a partially enlarged view of fig. 5 at C showing an alternative state of the hinge device of the present invention, together with inner structures of left and right fixing portions, showing an inner structure of a state in which the rod body 20 is coupled with the joint main body 10.

Fig. 3 is a top view of the hinge device of the present invention, and fig. 4 is a bottom view of the hinge device of the present invention, showing the arrangement positions of the first fixing base (405, 405 ') and the second fixing base (406, 406').

Fig. 6 is a stepped planing view from fig. 4B, fig. 10 is a stepped planing view from fig. 9D, fig. 11 is a stepped planing view from fig. 9E, showing a specific structure of the rod body 20 sleeved on the vertical pipe 101 of the joint body 10, showing a specific structure of the joint formed by the inner limiting portion and the outer protecting portion protecting rod body 20 sleeved on the vertical pipe 101, and showing a specific structure of the limiting base 301 fixed on the mounting base 1022.

Fig. 12 is a perspective view of the hinge device of the present invention, in which the front and rear casings (60, 60 ') and the left and right hinge seats (40, 40') are hidden, and shows a state in which the inner-layer stopper is fitted to the junction of the rod body 20 and the joint body 10, and a state in which the stopper 301 is connected to the mount 1022 is embodied.

Fig. 13 is an exploded view of the hinge device of the present invention, and fig. 14 is an exploded view of the upper half of the hinge device of the present invention, for separately showing the detailed structure of each component.

As shown in fig. 1-14, the hinge device provided in this embodiment is connected to a cleaning head and a handle of a floor cleaning machine, where the cleaning head includes a housing, the hinge device includes a T-shaped joint body 10, a transverse component for connecting the interior of the housing, and a longitudinal component for connecting the rod 20, the joint body 10 includes a transverse tube 102 with two ends extending and a vertical tube 101 perpendicular to only one end of the transverse tube, the transverse component includes left and right fixing portions, the left and right fixing portions are respectively movably disposed at two ends of the transverse tube 102 of the joint body 10, and the joint body 10 is detachably connected with the housing of the cleaning head in the interior of the housing through the left and right fixing portions, and the joint body 10 realizes relative rotation with the housing along the axis of the transverse tube 102 through the transverse component. The rod body 20 is rotated relative to the vertical pipe 101 of the joint main body 10 through the longitudinal rotating assembly, and the handle can be rotated relative to the cleaning head in two mutually perpendicular axial directions through the transverse rotating assembly and the longitudinal rotating assembly. When the user uses the floor washing machine, the user can operate more conveniently when meeting the need of rapidly and flexibly turning the cleaning head, and the cleaning head can flexibly reach each cleaning area under the control of the handle of the floor washing machine.

According to the hinge device provided by the invention, the left fixing part and the right fixing part of the transverse rotating assembly are used for realizing the butt locking coupling of at least two points of the transverse tube 102 of the joint main body 10 and the shell of the cleaning head, and the left fixing part and the right fixing part of the transverse rotating assembly wrap the two ends of the transverse tube 102 of the joint main body 10, so that the occurrence of the condition that the joint of the transverse tube 102, the left fixing part and the right fixing part is unsmooth in rotation due to the fact that external impurities enter the joint is prevented. The hinging device provided by the invention can enable the handle of the floor washing machine to rotate relative to the cleaning head in two mutually perpendicular axial directions through the transverse rotating component and the longitudinal rotating component. When the user uses the floor washing machine, the user can operate more conveniently when meeting the need of rapidly and flexibly turning the cleaning head, and the cleaning head can flexibly reach each cleaning area under the control of the handle of the floor washing machine.

Further, as shown in fig. 2, 6, 10 and 11, the vertical rotating component includes an inner layer limiting portion and an outer layer protecting portion, when the rod body 20 is sleeved at the upper end of the vertical tube 101 of the joint main body 10, the inner layer limiting portion is buckled at the connection position between the rod body 20 and the vertical tube 101, so that the two have degrees of freedom of mutual rotation, and the outer layer protecting portion is buckled at the periphery of the inner layer limiting portion, so that the connection position is isolated from the outside.

As shown in fig. 9, the left and right sides of the lower end of the joint body 10 are respectively provided with a transverse tube 102 extending outwards, the transverse tubes 102 are provided with stop collars 1021, the lower side of one end of the transverse tube 102, which is close to the vertical tube 101 of the joint body 10, is provided with a mounting seat 1022, and the reinforcing ribs 103 are arranged at the connection position of the transverse tube 102 and the vertical tube 101 of the joint body 10.

Specifically, in the above embodiment, as shown in fig. 6, 10 and 11, the lower end of the rod 20 is provided with an annular upper boss 1011, the upper end of the joint body 10 is provided with an annular lower boss 201, and when the lower end of the rod 20 is sleeved on the upper end of the positioning connection, the annular upper boss 1011 and the annular lower boss 201 are mutually meshed to form an annular protrusion.

Further, as shown in fig. 6, 10, 11 and 14, the inner limiting portion includes a front collar 50 and a rear collar 50', fixing posts 502 connected to the outer protecting portion are disposed on the lower sides of the front collar 50 and the rear collar 50', the front collar 50 and the rear collar 50' are fastened to each other to form an annular channel 504 capable of accommodating the annular protrusions, a plurality of positioning grooves 503 are formed in the side walls of the annular channel 504, positioning protrusions 2011 corresponding to the positioning grooves 503 are disposed on the annular protrusions, and when the rod body 20 and the connector body 10 rotate to an initial state, the positioning protrusions 2011 are inserted into the positioning grooves 503 correspondingly.

After the annular upper boss 1011 and the annular lower boss 201 are engaged with each other, the annular upper boss 1011 is located at the outer layer of the annular lower boss 201, and therefore, the positioning protrusions 2011 are all disposed on the annular upper boss 1011.

Further, in the above embodiment, as shown in fig. 14, the front clip 50 is further provided with a rotation driving groove 505, and the body side wall of the rod 20 is provided with a driving protrusion 2021, and when the annular protrusion is located in the annular groove 504 and the joint body 10 and the rod 20 are in the initial state, the driving protrusion 2021 is just located in the rotation driving groove 505.

It should be noted that, as shown in fig. 14, the front clip 50 and the rear clip 50 'each include a butt joint portion (501, 501'), a plurality of fixing posts (502, 502 '), positioning grooves (503, 503'), and annular grooves (504, 504 '), the butt joint portion 501 of the front clip 50 and the butt joint portion 501' of the rear clip 50 'are abutted against each other, the two portions can be fixed by bolts to form a whole together, and the two semicircular annular grooves 504 together form a complete annular groove 504, and the fixing posts 502 are uniformly distributed on the lower sides of the front clip 50 and the rear clip 50'.

It should be noted that, the initial state of the rod 20 refers to a state in which the rod 20 is locked to the cleaning head 1.

Further, when the front clip 50 and the rear clip 50 'are engaged with each other, the driving protrusion 2021 drives the rotation driving groove 504 to rotate together when the rod body 20 and the joint body 10 rotate with each other, thereby driving the whole inner limiting part (the integral body of the front clip 50 and the rear clip 50') to rotate.

In some embodiments, the front clip 50 and the rear clip 50' are made of elastic materials, and when the rod body 20 and the joint body 10 rotate relative to each other, the positioning protrusion 2011 and the driving protrusion 2021 respectively press the positioning groove 503 and the rotation driving groove 505 to deform and release from the positioning groove, so as to rotate circumferentially along the annular groove 504.

In some preferred embodiments, as shown in fig. 3, 5, 11, 13 and 14, the outer protective part comprises a front protective shell 60 and a rear protective shell 60', the front protective shell 60 and the rear protective shell 60' each comprise a first protective wall 601, a first step ring 602, a fixing hole 6021, a second step ring 603 and a second protective wall 604, the fixing hole 6021 is formed on the first step ring 602, the fixing holes 6021 are mutually matched with the fixing posts 502 and are in one-to-one correspondence, and when the front protective shell 60 and the rear protective shell 60 'are mutually buckled, an annular cavity capable of accommodating the inner limiting part is formed between the front protective shell 60 and the rear protective shell 60'.

Further, in the above embodiment, as shown in fig. 14, the second step ring 603 of the front protecting case 60 is provided with a clamping hole 6031, the second step ring 603 of the rear protecting case 60 'is provided with a clamping protrusion 6031', when the front protecting case 60 and the rear protecting case 60 'are correspondingly buckled, the clamping protrusion 6031' is just inserted into the clamping hole 6031, the first protecting wall 601 of the front protecting case 60 is provided with a limiting protrusion 6011, the top surface of the housing of the cleaning head 1 is provided with a limiting notch 1a, and when the rod body 20 rotates around the traversing assembly to a limit state, the limiting protrusion 6011 just enters into the limiting notch 1a.

In some preferred embodiments, as shown in fig. 2, 3, 9, 10 and 12, the left fixing portion and the right fixing portion are symmetrically distributed on the left and right sides of the transverse tube 102 of the joint body 10, and the left fixing portion and the right fixing portion can be connected with the housing of the cleaning head 1 through bolts.

According to the hinge device provided by the invention, the joint of the joint main body and the rod body is buckled through the inner layer limiting part, so that the joint main body and the rod body have the degree of freedom of mutual rotation, and the joint of the joint main body and the rod body is wrapped through the outer layer protecting part, so that the phenomenon of unsmooth rotation caused by the fact that external impurities enter the joint is prevented. The hinge device provided by the invention has the effect of protecting the joint of the joint main body and the rod body from entering external impurities to prevent rotation.

Further, in the above embodiment, as shown in fig. 7, 8, 9, 10, 12 and 13, the left fixing portion and the right fixing portion each include an abutment tongue assembly 30 and a hinge seat 40, the two abutment tongue assemblies 30 are respectively disposed at the lower sides of the two ends of the joint body 10, the two hinge seats 40 are sleeved at the two ends of the joint body 10, and the abutment tongue assemblies 30 are abutted with the inner cavity side walls of the corresponding hinge seats 40; the abutting tongue assembly 30 comprises a limiting seat 301, an abutting tongue 302 and a spring 303, wherein the top surface of the limiting seat 301 is provided with a containing cavity, the bottom wall of the containing cavity is provided with an opening, two sides of the limiting seat 301 are connected with a mounting seat 1022 on one side of the joint main body 10 through bolts, the spring 303 and the abutting tongue 302 are both arranged in the containing cavity, the upper end of the spring 303 is connected with the joint main body 10, the lower end of the spring 303 is connected with the upper end of the abutting tongue 302, and the lower end of the abutting tongue 302 extends out of the containing cavity through the opening and then abuts against the side wall of the inner cavity of the hinging seat 40; the hinge seat 40 comprises an abutting wall 401, a stabilizing protrusion 4011 for limiting the stabilizing rod body 20, a limiting wall 402, a sleeving wall 403, a first fixing seat 405 and a second fixing seat 406, the sleeving wall 403 is sleeved on the periphery of the transverse tube 102 at one end of the joint body 10, a sliding cavity is formed between the limiting wall 402 and the side wall at one end of the transverse tube 102 of the joint body 10, the abutting tongue assembly 30 is completely located in the sliding cavity, the abutting tongue 302 abuts against the abutting wall 401, the stabilizing protrusion 4011 is arranged on the inner side of the abutting wall 401, when the rod body 20 rotates clockwise around the axis of the lower end of the joint body 10 to a limiting state, the abutting tongue 302 just passes over the stabilizing protrusion 4011, the first fixing seat 404 and the second fixing seat 405 are respectively arranged on the outer side of the sleeving wall 403 and the outer side of the abutting wall 401, and bolt holes are formed in the first fixing seat 404 and the second fixing seat 405.

Further, in the above embodiment, as shown in fig. 5, 7 and 8, the radian in the sliding cavity is designed to be gradually changed, the radian in the counterclockwise direction of the left side of the stabilizing protrusion 4011 is gradually increased, and when the rod body 20 rotates counterclockwise around the axis of the lower end of the joint body 10, the compression amount of the spring 303 is gradually increased until the abutment tongue 302 abuts against the abutment wall 401.

After the hinge device of the invention is installed on the shell of the cleaning head 1, the rod body 20 and the joint main body 10 can realize the working principle of mutual free rotation:

under the condition that the front clamp 50 and the rear clamp 50 'are made of hard materials, when the joint main body 10 rotates around the transverse pipe 102 until the limit protrusion 6011 leaves the limit notch 1a, the joint main body 10 is inserted into a connection port of a shell of the cleaning head 1, the joint main body 10 is connected with the shell through the first fixing seat 404 and the second fixing seat 405 in a bolt way, at the moment, the rod body 20 and the cleaning head 1 are in a locking state, the rotary handle drives the rod body 20 to rotate, so that the positioning protrusion 2011 drives the annular channel 504, and the whole formed by buckling the front clamp 50 and the rear clamp 50' rotates along with the rod body 20; meanwhile, the driving protrusion 2021 is engaged in the rotation driving groove 505, and drives the rotation driving groove 504 to rotate together, so as to drive the whole inner layer limiting portion (the front clip 50 and the rear clip 50' to be buckled into a whole) to rotate. Because the front and rear clips 50' keep the tight state with the positioning protrusion 2011, the mutual rotation between the inner layer limit part and the outer layer protection part has a certain damping sense when the main body of the rod 20 rotates, the quality sense of the hinge device is greatly increased, and when the rod 20 rotates to the initial state, the limit protrusion 6011 is coupled with the limit notch 1a, so that the rod 20 is prevented from easily rotating after reset, when the rod 20 is driven to rotate along the axis of the lower end of the joint main body 10, the abutting tongue 302 compresses the spring 303 and retracts into the limit seat 301 until the abutting tongue 302 passes over the stabilizing protrusion 4011, the rod 20 continues to rotate, the abutting tongue 302 is stressed to be increased because the radian of the left side of the stabilizing protrusion 4011 is gradually increased, the spring 303 is gradually compressed until the abutting tongue 302 is completely abutted against the abutting wall 401, the rod 20 cannot be continuously driven to rotate, the effect of limiting the rotation angle of the rod 20 is achieved, and when the rod 20 is reset in the direction, the abutting tongue 302 passes over the stabilizing protrusion 4011, the limit protrusion 6011 on the front guard 60 is just blocked into the limit notch 1a of the cleaning head 1, and the locking effect of the rod 20 and the cleaning head 1 is further ensured.

Under the condition that the front clamp 50 and the rear clamp 50' are made of elastic materials, when the joint main body 10 rotates around the transverse tube 102 until the limit projection 6011 leaves the limit notch 1a, the joint main body 10 is inserted into the connection port of the shell of the cleaning head 1, the joint main body 10 is connected with the shell through the first fixing seat 404 and the second fixing seat 405, at the moment, the rod body 20 and the cleaning head 1 are in a locking state, the rotary handle drives the rod body 20 to rotate, so that the positioning projection 2011 presses the annular channel 504, the front clamp 50 and the rear clamp 50' deform until the positioning projection 2011 breaks away from the positioning groove 503, meanwhile, the driving projection 2021 also presses the side wall of the rotary driving groove 505 to deform until the driving projection 2021 breaks away from the rotary driving groove 505, at the moment, the rod body 20 can rotate relative to the joint main body 10, namely, the direction of the handle of the rod body 20 can be adjusted, and because the front clamp 50' maintains a tight abutting state with the positioning projection 2011, the body of the rod 20 rotates to have necessary damping sense, the quality sense of the device is greatly improved, when the rod 20 rotates to an initial state, the positioning bulge 2011 enters the positioning groove 503, the driving bulge 2021 enters the rotation driving groove 505, the rod 20 is prevented from easily rotating after reset, when the driving rod 20 rotates along the axis of the lower end of the joint body 10, the abutting tongue 302 is stressed by the compression spring 303 and retracts into the limiting seat 301 until the abutting tongue 302 passes over the stabilizing bulge 4011, the rod 20 continues to rotate, the abutting tongue 302 is stressed and compressed gradually until the abutting tongue 302 is completely abutted against the abutting wall 401, the rod 20 cannot be continuously driven to rotate, the effect of limiting the rotation angle of the rod 20 is achieved, when the direction rotating rod 20 resets, the abutting tongue 302 passes over the stabilizing bulge 4011, at this time, the limit protrusion 6011 on the front protecting case 60 is just clamped into the limit notch 1a of the cleaning head 1, so as to further ensure the locking effect of the rod 20 and the cleaning head 1.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the teachings of the present invention, which are intended to be included within the scope of the present invention.

Claims

1. A hinge assembly for connecting a cleaning head with a housing of a floor cleaning machine to a handle, comprising:

2. The hinge assembly of claim 1, wherein the longitudinal rotating member comprises an inner limiting portion and an outer protecting portion, the inner limiting portion is fastened to a connection portion between the rod body and the vertical tube when the rod body is sleeved on the upper end of the vertical tube, and the outer protecting portion is fastened to an outer periphery of the inner limiting portion.

3. The hinge assembly of claim 2, wherein the lower end of the rod body is provided with an annular upper boss, the upper end of the standpipe is provided with an annular lower boss, and the annular upper boss and the annular lower boss are engaged with each other to form an annular protrusion when the lower end of the rod body is sleeved on the upper end of the standpipe.

4. A hinge assembly according to claim 3, wherein the inner limiting portion comprises a front clip and a rear clip, the front clip and the rear clip are fastened to each other to form an annular channel capable of accommodating the annular protrusions, a plurality of positioning grooves are formed in the side wall of the annular channel, positioning protrusions corresponding to the positioning grooves one to one are formed on the annular protrusions, and when the rod body and the joint body rotate to an initial state, the positioning protrusions are correspondingly inserted into the positioning grooves.

5. The hinge assembly of claim 4, wherein the front yoke further comprises a rotational driving groove, and wherein the body side wall of the lever body comprises a driving protrusion, wherein the driving protrusion is positioned in the rotational driving groove when the annular protrusion is positioned in the annular channel and the joint body and the lever body are in an initial state.

6. The hinge apparatus according to claim 5, wherein when the front clip and the rear clip are engaged with each other, the driving protrusion drives the rotation driving groove to rotate together to drive the entire inner layer stopper to rotate when the rod body and the joint main body are rotated with each other.

7. A hinge assembly according to claim 3, wherein the outer shield portion comprises a front shield and a rear shield, each of which comprises a first shield wall, a first step ring, a second step ring and a second shield wall, and wherein when the front shield and the rear shield are engaged with each other, an annular cavity is formed between the front shield and the rear shield which accommodates the inner limit portion.

8. The hinge apparatus according to claim 7, wherein a clamping hole is formed in the second step ring of the front cover, and a clamping protrusion is formed in the second step ring of the rear cover, and the clamping protrusion is inserted into the clamping groove when the front cover is correspondingly fastened to the rear cover.

9. The hinge assembly of claim 7, wherein the first protective wall of the front protective housing is provided with a limit protrusion, the cleaning head top surface is provided with a limit notch, and the limit protrusion just enters the limit notch when the lever body rotates to a limit state about the traverse assembly.

10. A hinge device according to any one of claims 1 to 9, wherein the left and right fixing portions are symmetrically disposed on left and right sides of the lateral pipe of the joint body, and the left and right fixing portions are connected to the housing by bolts.

11. The hinge device according to claim 10, wherein the left fixing portion and the right fixing portion each include an abutment tongue assembly and a hinge seat, the two abutment tongue assemblies are respectively disposed at lower sides of two ends of the transverse tube of the joint body, the two hinge seats are sleeved at two ends of the transverse tube of the joint body, and the abutment tongue assemblies are abutted with corresponding inner cavity side walls of the hinge seats.

12. The hinge assembly of claim 11, wherein the abutment tongue assembly comprises a limiting seat, an abutment tongue and a spring, wherein the top surface of the limiting seat is provided with a receiving cavity, the bottom wall of the receiving cavity is provided with an opening, two sides of the limiting seat are connected with a mounting seat on a transverse tube of the joint body through bolts, the spring and the abutment tongue are both arranged in the receiving cavity, the upper end of the spring is connected with the transverse tube of the joint body, the lower end of the spring is connected with the upper end of the abutment tongue, and the lower end of the abutment tongue extends out of the receiving cavity through the opening and then is abutted with the inner cavity side wall of the hinge seat.

13. The hinge device of claim 11, wherein the hinge seat comprises an abutment wall, a stabilizing protrusion for limiting the stabilizing rod body, a limiting wall, a socket wall, a first fixing seat, and a second fixing seat;

the stabilizing protrusion is arranged on the inner side of the abutting wall;

14. A hinge assembly according to claim 13, wherein the curvature in the sliding cavity is designed to be gradual, and the curvature in the counterclockwise direction of the stabilizing projection is gradually increased, and the amount of compression of the spring is gradually increased as the lever body is rotated counterclockwise about the lower end axis of the joint body until the abutment tongue abuts the abutment wall.