WO2022062562A1

WO2022062562A1 - Adapter and cleaning device

Info

Publication number: WO2022062562A1
Application number: PCT/CN2021/104291
Authority: WO
Inventors: 李进忠
Original assignee: 追觅创新科技(苏州)有限公司
Priority date: 2020-09-22
Filing date: 2021-07-02
Publication date: 2022-03-31

Abstract

An adapter, comprising a first joint member (4) and a second joint member (5) connected to one end of the first joint member (4); the first joint member (4) and the second joint member (5) can rotate relative to each other along a rotation axis, so that the first joint member (4) and the second joint member (5) form a movement angle; and a first motion region and a second motion region are formed between the first joint member (4) and the second joint member (5) in the rotation direction taking the rotation axis as a rotation center; there are at least a plurality of preset angles in the first motion region, so that the first joint member (4) and the second joint member (5) can remain in relative static when the angle therebetween is a preset angle; and in the second motion region, the first joint member (4) and the second joint member (5) can rotate freely relative to each other. There are the plurality of preset angles in the first motion region, enabling the first joint member (4) and the second joint member (5) to remain in relative static; and in the second motion region, the first joint member (4) and the second joint member (5) can rotate freely relative to each other, enabling the adapter to achieve two different working scenarios.

Description

Adapters and Cleaning Devices

technical field

The present application relates to an adapter and a cleaning device.

Background technique

Vacuum cleaners are commonly used cleaning tools in people's daily life. They are widely used to clean the floor, bedding, the bottom of the bed, the top of the cabinet and other places where dust is easy to accumulate. However, due to the shape and location of the cleaning object, it is not suitable to use adapters with the same turning angle. There are already a variety of adapters on the market for users to choose the corresponding adapter when cleaning different places. Therefore, the same vacuum cleaner is usually equipped with multiple adapters for users to choose when using.

The adapter can help users to clean up different places, but each type of adapter can only realize the conversion of one working scene. will be more complicated.

SUMMARY OF THE INVENTION

In view of the deficiencies in the above technologies, the present application provides an adapter that can realize two different working scenarios.

In order to solve the above technical problems, the technical solution adopted in the present application is: an adapter, comprising a first joint member and a second joint member connected with one end of the first joint member, the first joint member and the second joint The parts can be rotated relative to each other along a rotation axis so that the first joint part and the second joint part form an active angle. A first movement interval and a second movement interval are formed between the two joint parts; in the first movement interval, at least a plurality of preset angles exist, so that the distance between the first joint part and the second joint part When the angle is the preset angle, the two can remain relatively static; in the second movement interval, the first joint member and the second joint member can rotate relatively freely.

In an embodiment of the present application, the defining axis plane is a plane passing through a rotation axis, and the rotation axis is in the axis plane, and the first motion interval and the second motion interval are respectively in the axis plane on both sides.

In an embodiment of the present application, a locking structure is provided between the first joint member and the second joint member; the locking structure includes a tab disposed on the first joint member and a tongue disposed on the second joint There is a positioning card slot on the component to realize the locking function with the tab.

In an embodiment of the present application, a first arc-shaped segment and a second arc-shaped segment connected to the first arc-shaped segment are formed on the second joint member, and a second arc-shaped segment is provided in the first arc-shaped segment. a plurality of positioning slots that can be engaged with the tabs; in the first movement interval, the tabs are engaged with one of the positioning slots to make the first joint part and the second joint part Locking; in the second movement interval, the tab is located in the second arc-shaped segment, and moves freely along the arc-shaped side surface of the second arc-shaped segment under the action of external force.

In an embodiment of the present application, the tab is formed by bending an elastic sheet.

In an embodiment of the present application, a clamping groove is provided on the first joint member, and the elastic sheet is clamped in the clamping groove.

In an embodiment of the present application, the first joint element has a first joint piece extending toward the second joint element, and the second joint element has a second joint head extending toward the first joint element piece.

In an embodiment of the present application, the first joint piece and the second joint piece are partially overlapped and connected in the thickness direction of the first joint piece through a cover sheet, and the locking structure is provided on the first joint piece and the first joint piece. The overlapping portion of the second articular sheet.

In an embodiment of the present application, the second joint piece is located on the outer side of the first joint piece, the second joint piece is formed with a pair of through holes, and the first joint piece is protruded and formed with a protrusion , the protrusion protrudes into the through hole, a hook groove is formed on the protrusion, the cover sheet has a cover plate portion and a hook formed on the cover plate portion, the The sealing plate portion is located in the pair of through holes, and the hook is hooked to the hook groove.

In order to solve the above technical problem, another solution proposed by the present application is: a cleaning device, the suction port of the cleaning device can be connected to the adapter described in any of the above embodiments.

Compared with the prior art, the present application has the beneficial effects that: the first joint member and the second joint member can rotate relatively around the rotation axis, and form a first movement interval and a second movement interval; A plurality of preset angles can keep the first joint part and the second joint part relatively static; in the second movement interval, the first joint part and the second joint part can rotate relatively freely, so that the adapter can be rotated freely. Implement two different work scenarios.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort. in:

1 is a schematic structural diagram of an adapter according to an embodiment of the present invention;

Fig. 2 is an exploded view of the adapter shown in Fig. 1;

Fig. 3 is a partial structural view of the adapter shown in Fig. 1;

Fig. 4 is an exploded view of the second fitting part in Fig. 1;

Fig. 5 is the structural representation of the first joint member in Fig. 1;

Fig. 6 is the structural representation of the second joint member in Fig. 1;

FIG. 7 is a schematic structural diagram of the first joint member in another direction in FIG. 1;

Fig. 8 is the partial schematic diagram after partial structure decomposition in Fig. 1;

Fig. 9 is another structural schematic diagram of the first joint part and the second joint part;

Fig. 10 is another structural schematic diagram of the first joint part and the second joint part.

In the figure: 1-hose, 2-first fitting, 21-first fitting housing, 212-insertion groove, 213-stop ring, 22-first hollow cavity, 221-hose insert Connection section, 222-pipe body insertion section, 3-second adapter, 31-second adapter shell, 311-first pipe section, 312-second pipe section, 3121-dumb-proof block, 313-installation groove , 3131-spring, 3132-cross block, 3133-card slot, 314-plate body, 3141-button, 3142-clamp block, 3143-card, 3144-shaft, 4-first joint, 41-first Base, 42-The first joint cavity, 43-The first joint piece, 431-Protrusion, 4311-Hook groove, 432-Clamping groove, 44-Fastener, 45-Rib, 5-Second joint Parts, 51- the second base, 511- the button opening, 52- the second joint cavity, 53- the second joint piece, 531- the through hole, 532- the first arc segment, 533- the second arc segment , 534-positioning slot, 6-cover, 61-cover plate, 62-hook, 7-elastic piece, 71-tab.

detailed description

In order to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all the structures related to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "comprising" and "having" and any variations thereof in this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The cleaning device in a preferred embodiment of the present invention is a hand-held vacuum cleaner (not shown). In other embodiments, the cleaning device can also be other cleaning devices including the adapter of the present application. The hand-held vacuum cleaner (not shown) includes a vacuum cleaner pipe body (not shown), a vacuum head (not shown) and an adapter connecting the vacuum cleaner pipe body and the vacuum head, and the vacuum head adopts a conventional structure in the prior art , which will not be described in detail here. The end of the vacuum cleaner pipe body is a suction port (not shown), and the suction port is butted with the adapter, so as to realize the connection between the vacuum cleaner pipe body and the dust suction head. Referring to FIG. 1 , the adaptor shown in a preferred embodiment of the present invention includes a flexible hose 1 , a first adapter 2 butt joint with one end of the hose 1 , and a first adapter piece 2 docked with the other end of the hose 1 . Two fittings 3, a first joint 4 sleeved on the first fitting 2 and a second joint 5 sleeved on the second fitting 3, and connecting the first joint 4 and the second joint The locking structure of the joint part 5 is connected. The hose 1 is made of plastic material, which is a corrugated tube. The adapter is connected to the vacuum cleaner tube body and the vacuum head. It is defined that the first fitting 2 is butted with the vacuum cleaner tube body (not shown), and the second fitting 3 is butted with the suction head (not shown). In other embodiments, the adaptor may not include a hose, and the hose is a part of the vacuum cleaner body. When using the hand-held vacuum cleaner, it is only necessary to sleeve the adaptor on the hose on the vacuum cleaner body, so that when the first joint is used When the joint member 4 and the second joint member 5 rotate relative to each other, the hose 1 located in the first joint member 4 and the second joint member 5 can be bent. Alternatively, instead of using a hose structure, other connecting member structures are used. For example, the shape of the connecting member is roughly spherical, the connecting member is a hollow structure and has openings at both ends, and the openings at both ends are respectively connected with the first joint member 4, the second The joint parts 5 are directly connected to each other, or alternatively, the first joint parts 4 and the second joint parts 5 are directly connected to each other. For example, the first joint parts 4 and the second joint parts 5 are hollow cylindrical bodies, and at least one of the butt joints is a spherical structure. .

Referring to FIG. 1 to FIG. 3 , the first fitting 2 is a hollow cylinder, which includes a first fitting housing 21 and a first hollow cavity 22 surrounded by the first fitting housing 21 . The hose 1 is inserted into the first hollow cavity 22 and is screwed with the first mating housing 21 . A stop ring 213 is formed protruding from the first mating housing 21 , and the hose 1 abuts in the stop ring 213 to limit the installation depth of the hose 1 . The stop ring 213 divides the first hollow cavity 22 into two sections, named respectively: the hose insertion section 221 and the tube body insertion section 222, wherein the hose insertion section 221 is matched with the hose 1, and the tube body is inserted into The connecting section 222 is used for docking with the vacuum cleaner pipe body (not shown) (that is, the head of the vacuum cleaner pipe body is inserted into the pipe body inserting section 222). In this embodiment, since the diameter of the hose 1 and the diameter of the tube body of the vacuum cleaner are different, the inner diameter of the hose insertion section 221 is smaller than the inner diameter of the tube body insertion section 222. It should be noted that in this embodiment, the The outer diameters of the pipe body insertion section 222 and the hose insertion section 221 are also different. The fixing method between the first mating housing 21 and the vacuum cleaner pipe body can adopt a conventional plugging method. In this embodiment, an insertion slot 212 is formed in the first mating housing 21. The length direction of the first fitting 2 extends, and as the insertion depth increases, the opening of the insertion slot 212 gradually decreases.

2 and 4 , the second fitting 3 is also a hollow cylinder, which includes a second fitting housing 31 and a second hollow cavity 32 surrounded by the second fitting housing 31 . 1 is inserted into the second hollow cavity 32. The second fitting housing 31 includes a first pipe section 311 threaded with the hose 1 and a second pipe section 312 extending from the first pipe section 311 along the length direction of the second fitting housing 31 , and the second hollow cavity 32 penetrates through The first pipe section 311 and the second pipe section 312 . The first pipe section 311 is butted with the dust suction head. In order to prevent mis-insertion, the inner side of the second pipe section 312 is provided with a fool-proof block 3121 for preventing mis-insertion. In order to facilitate docking with the dust head, in this embodiment, the second mating housing 31 is formed with an installation groove 313 extending along the length direction of the second mating housing 31 , and a plate body 314 is arranged in the installation groove 313 , a button 3141 for applying external force and a clamping block 3142 for docking with the clamping groove (not shown) on the dust suction head are formed on the upper surface of the plate body 314. The button 3141 and the clamping block 3142 are located in On the second pipe section 312, a spring 3131 is still arranged in the installation groove 313. One end of the spring 3131 abuts on the groove bottom surface of the installation groove 313, and the other end abuts on the lower surface of the plate body 314. The groove bottom surface and the lower surface The surfaces are provided with cross blocks 3132 which are clamped on both ends of the spring 3131 . A card 3143 and a shaft portion 3144 are also formed on the plate body 314. The card 3143 and the shaft portion 3144 are respectively located at both ends of the plate body 314 in the length direction. Matching card slot 3133 and shaft slot (not shown). When an external force is applied to the button 3141, the plate body 314 moves toward the installation groove 313, so that the clamping block 3142 is separated from the clamping groove on the suction head, thereby realizing the unlocking. Due to the existence of the spring 3131, when the button 3141 When the external force is removed, the plate body 314 is pushed up by the spring 3131 and returns to the original position.

Referring to FIGS. 2 and 5 , the first joint member 4 includes a first base 41 , a first joint cavity 42 surrounded by the first base 41 and a first joint cavity 42 extending from the first base 41 toward the second joint member 5 . The first joint piece 43 . The first mating housing 21 (see FIG. 3 ) is inserted into the first joint cavity 42 , and the first base 41 is fixed on the first mating housing 21 (see FIG. 3 ). The assembling structure between the mating housings 21 can adopt the conventional manner in the prior art. In this embodiment, the first base 41 and the first mating housing 21 are connected by a snap-fitting structure and a fastener 44 To achieve fixation, specifically, the first base 41 protrudes toward the first joint cavity 42 to form a convex rib 45, and the first mating housing 21 is provided with a card interface (not shown) that cooperates with the convex rib 45. , the rib 45 and the card interface (not shown) form a snap connection structure, of course, other structures can also be used in other embodiments.

Referring to FIGS. 2 and 4 , the second joint 5 includes a second base 51 , a second joint cavity 52 surrounded by the second base 51 , and a second joint 52 extending from the second base 51 toward the first joint 4 . The second joint piece 53 . The second mating housing 31 is inserted into the second joint cavity 52 , and the second base 51 is fixed on the second mating housing 31 . The second base 51 is sleeved on the outer side of the first pipe section 311 , and the assembly method between the second base 51 and the second pipe section 312 can be connected by a fastener 44 . It should be noted that the above-mentioned second mating housing 31 is provided with a plate body 314. In order to facilitate the assembly of the plate body 314 and prevent the plate body 314 from being detached from the installation groove 313, the plate body 314 is arranged on the second Between the base 51 and the second mating housing 31 , specifically, the plate body 314 where the button 3141 is located is inserted into the second base 51 , and the second base 51 is provided with a passage for the button 3141 to pass through. Button opening 511 (see Figure 6). Since one end of the plate body 314 at the position of the button 3141 is inserted into the second base 51, one end of the plate body 314 at the position of the button 3141 is restricted in the installation groove 313, and due to the shaft portion 3144 and the shaft groove (not shown) The other end of the plate body 314 is also limited in the installation groove 313 , so that the entire plate body 314 will not be separated from the installation groove 313 .

Referring to FIGS. 1 and 2 , the first joint piece 43 and the second joint piece 53 both protrude out of the first fitting housing 21 and the second fitting housing 31 , and both extend to the middle of the hose 1 and are located in the middle of the hose 1 . Outside of hose 1. The first joint piece 43 and the second joint piece 53 are movably connected to form a movable joint of the first joint piece 4 and the second joint piece 5, and the first joint piece 4 and the second joint piece 5 rotate relative to the movable joint as the axis. to bend hose 1. A locking structure is provided between the first joint piece 43 and the second joint piece 53 . A first movement interval and a second movement interval are formed between the first joint member 4 and the second joint member 5 . During the first movement interval, the first joint piece 43 and the second joint piece 53 are locked by the locking structure to form a plurality of preset angles. When the first joint member 4 and the second joint member 5 are in the first movement interval During relative movement, the first joint member 4 and the second joint member 5 will be relatively static to maintain the preset clamping angle; during the second movement interval, the locking structure is unlocked, and the first joint member 4 and the second joint member 5 The locking structure is relatively free rotation of the axis.

Please refer to FIG. 7 and FIG. 8 in conjunction with FIG. 2. Specifically, the locking structure includes a tab 71 provided on the first joint member 4 and a positioning card provided on the second joint member 5 to achieve a locking function with the tab 71. Slot 534. A first arc-shaped segment 532 and a second arc-shaped segment 533 connected to the first arc-shaped segment 532 are formed on the second joint piece 53 , and a plurality of arc-shaped segments 532 are provided in the first arc-shaped segment 532 that can be engaged with the tabs 71 . Position the card slot 534 . During the first movement interval, the tab 71 is engaged with one of the positioning slots 534 to lock the first joint piece 43 and the second joint piece 53 . The purpose of providing several positioning slots 534 in this embodiment is that the positioning slots 534 are arranged along the first arc-shaped segment 532. When the tabs 71 are engaged with the positioning slots 534 at different positions, the first joint piece The locking angle formed between 43 and the second joint piece 53 is different, that is, the clamping angle between the first joint part 4 and the second joint part 5 is different, so that the bending angle of the hose 1 is different. During the second movement interval, the tab 71 is located in the second arc-shaped section 533 and freely moves along the arc-shaped side surface of the second arc-shaped section 533 under the action of external force. The tab 71 is formed by bending the elastic sheet 7 . The first joint piece 43 is provided with a clamping groove 432, and the elastic sheet 7 is clamped in the clamping groove 432, wherein the elastic sheet 7 has a clamping part that is clamped in the clamping groove 432, and the tab 71 is located in the clamping groove 432. Outside of slot 432. Certainly, the locking structure can also be implemented in other ways, such as a snap ring. When the first joint member 4 and the second joint member 5 need to be locked to form a clamping angle, the snap ring can be snapped on the first joint member 4 and the second joint member 5. On the second joint member 5, when the first joint member 4 and the second joint member 5 do not need to be locked, the snap ring can be cancelled, or the locking structure can also be a hook provided on the first joint member 4, and the second joint member 5. A card slot is provided on the joint member 5, and the locking is realized by means of a hook and a card slot.

Referring to FIG. 8 , there are various designs for the positions of the first motion interval and the second motion interval. An axis plane is defined, and the first motion interval and the second motion interval are always on both sides of the axis plane. The rotation axis is on the axis plane, and the defined axis plane can be selected in many ways. The following describes the positional relationship between the three axis planes and the first motion interval and the second motion interval. The first joint member 4 and the second joint member 5 can rotate around the locking structure. When the first axis defined by the first joint member 4 is substantially coincident with the second axis defined by the second joint member 5, the first axis, The second axis and the axis of rotation define a reference plane X. The defined axis plane Y is a plane that forms a certain angle with the reference plane X, the rotation axis is on the axis plane Y, and the first motion interval and the second motion interval are located on opposite sides of the axis plane Y. The first motion interval can be selected and set within the range of 0-180 degrees on one side of the second axis plane Y, and the second motion interval can be selected and set within the range of 0-180 degrees on the other side of the second axis plane Y .

Referring to FIG. 9 , the first axis, the second axis and the rotation axis define an axis plane Y, and the first motion interval and the second motion interval are located on opposite sides of the axis plane Y respectively. The first motion interval can be selected and set within the range of 0-180 degrees on one side of the axis plane Y, and the second motion interval can be selected and set within the range of 0-180 degrees on the other side of the axis plane Y.

Referring to FIG. 10 , the first joint piece 43 is formed by bending and extending from the end of the first base 41 , the second joint piece 53 is formed by bending and extending from the end of the second base 51 , and the first joint piece 43 is vertical On the axis Z1 of the first base 41 , the second joint piece 53 is perpendicular to the axis Z2 of the second base 51 , and the first joint piece 43 and the second joint piece 53 are connected by a locking structure, which is the same as that in the previous embodiment. structure is the same. The first joint member 4 and the second joint member 5 rotate around the rotation axis. The axis plane Y is perpendicular to the axis Z1 of the first base 41 and the axis Z2 of the second base 51 . The axis Z1 of the first base 41 and the axis Z2 of the second base 41 are arranged in parallel and define the axis plane Y. The axis plane Y The axis Z1 of the first base 41 and the axis Z2 of the second base 51 are perpendicular to the axis Z1 of the second base 51. Since the center line of the hose 1 is perpendicular to the axis Z1 of the first base 41 and the axis Z2 of the second base 51, the axis plane Y is For the plane defined by the centerline of the hose 1 and the rotation axis, the first movement interval and the second movement interval are located on opposite sides of the axis plane Y.

Referring to FIGS. 1 and 2 , in this embodiment, the first joint piece 43 and the second joint piece 53 partially overlap and are connected in the thickness direction of the first joint piece 43 through the cover sheet 6 , and the locking structure is provided on the first joint piece The overlapping portion of the sheet 43 and the second joint sheet 53 . Specifically, the second joint piece 53 is located on the outer side of the first joint piece 43 , the second joint piece 53 is formed with an opposite hole 531 , the first joint piece 43 is protruded and formed with a protrusion 431 , and the protrusion 431 protrudes into To the through hole 531, a hook groove 4311 is formed on the protrusion 431 (see FIG. 7), and the cover sheet 6 has a cover plate portion 61 and a hook 62 formed on the cover plate portion 61. The cover plate portion 61 is located at Inside the through hole 531 , the hook 62 hooks the hook groove 4311 .

It should be noted that the first joint pieces 43 are two oppositely arranged pieces, the two first joint pieces 43 are located on the outside of the hose 1 , the second joint pieces 53 are two oppositely arranged pieces, and the two first joint pieces 43 Located on the outside of the hose 1, that is, the first joint piece 43 and the second joint piece 53 are two pairs symmetrically arranged on both sides of the hose 1, and the locking structure is arranged in one pair of the first joint piece 43 and the second joint piece 53. superior. In other embodiments, only a pair of the first joint piece 43 and the second joint piece 53 may be provided. In addition, when two pairs of the first joint piece 43 and the second joint piece 53 are provided, locking structures can also be provided on the two pairs of the first joint piece 43 and the second joint piece 53, and the two locking structures are arranged symmetrically.

The working process of the above adapter will be described below. When using the adaptor, the first joint piece 43 and the second joint piece 53 can rotate relative to each other to bend the hose 1 along the rotation direction. When the tab 71 is located in the positioning slot 534, the first joint piece 43 and the second joint piece 53 form a first motion interval: the first joint piece 43 and the second joint piece 53 are locked by the locking structure to position the first joint piece 43 and the second joint piece 53 clamping angle; when the tab 71 is located in the second arc segment 533, the first joint piece 43 and the second joint piece 53 form a second movement interval: the first joint piece 43 and the first joint piece 53 The two joint pieces 53 freely move along the arcuate side of the second arcuate segment 533 under the action of external force.

To sum up, by arranging the locking structure between the first joint piece 43 and the second joint piece 53 , since a first movement interval and a second movement interval are formed between the first joint piece 43 and the second joint piece 53 , During the first movement interval, the first joint piece 43 and the second joint piece 53 are locked by the locking structure to lock the clamping angle of the first joint piece 4 and the second joint piece 5; in the second movement section, the locking structure After unlocking, the first joint member 4 and the second joint head can rotate relative to each other, so that the adapter can realize two different working scenarios. Therefore, as long as the adapter as claimed in the present application is installed on the suction port of the cleaning device, a variety of different areas can be cleaned.

The above description is only an embodiment of the present application, and does not limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Claims

An adapter, comprising a first joint member and a second joint member connected with one end of the first joint member, the first joint member and the second joint member can rotate relatively along a rotation axis to make the first joint member and the second joint member rotate relatively. The first joint piece and the second joint piece form a movable angle, and it is characterized in that:

A first movement section and a second movement section are formed between the first joint member and the second joint member in the rotation direction with the rotation axis as the rotation center; in the first movement section there are at least a plurality of a preset angle, so that when the angle between the first joint part and the second joint part is the preset angle, the two can remain relatively static; in the second motion interval, the first joint The joint member and the second joint member can rotate relatively freely.
The adapter of claim 1, wherein:

It is defined that the axis plane is a plane passing through the axis of rotation, and the axis of rotation is in the axis plane, and the first motion interval and the second motion interval are respectively on two sides of the axis plane.
The adapter according to claim 1 or 2, characterized in that,

A locking structure is provided between the first joint part and the second joint part; the locking structure comprises a tab arranged on the first joint part and a tongue arranged on the second joint part to be realized with the tab Positioning card slot for locking function.
The adapter of claim 3, wherein

A first arc-shaped segment and a second arc-shaped segment connected with the first arc-shaped segment are formed on the second joint member, and several arc-shaped segments are arranged in the first arc-shaped segment and can be clamped with the tabs. a matching positioning slot; in the first movement interval, the tab is engaged with one of the positioning slots to lock the first joint member and the second joint member; in the second movement interval , the tab is located in the second arc-shaped segment, and is free to move along the arc-shaped side surface of the second arc-shaped segment under the action of external force.
The adapter according to claim 3 or 4, characterized in that,

The tab is formed by bending an elastic sheet.
The adapter of claim 5, wherein:

A clamping groove is arranged on the first joint member, and the elastic sheet is clamped in the clamping groove.
The adapter of claim 5, wherein:

The first joint piece has a first joint piece extending toward the second joint piece, and the second joint piece has a second joint head piece extending toward the first joint piece.
The adapter of claim 7, wherein,

The first joint piece and the second joint piece are partially overlapped and connected in the thickness direction of the first joint piece through a cover sheet, and the locking structure is provided on the overlapping portion of the first joint piece and the second joint piece.
The adapter of claim 8, wherein:

The second joint piece is located on the outer side of the first joint piece, the second joint piece is formed with a pair of through holes, the first joint piece is protruded and formed with a protrusion, and the protrusion extends into the In the connecting hole, a hook groove is formed on the protrusion, the cover sheet has a sealing plate part and a hook formed on the sealing plate part, and the sealing plate part is located in the connecting hole. Inside the hole, the hook hooks the hook groove.
A cleaning device, characterized in that the suction port of the cleaning device can be connected to the adapter according to any one of claims 1-9.