Dust collector flat suction device capable of swinging at multiple angles

Abstract

The invention discloses a dust collector flat suction device capable of swinging at multiple angles. The lower joint is positioned at the end part of the suction nozzle; one end of the adapter is rotationally connected with the lower joint along the X axis, and a first hinge lug and a second hinge lug are arranged on the two sides, facing the Z axis, of the other end of the adapter respectively; the upper connector comprises an inner connector and an outer connector, a third hinge lug and a fourth hinge lug are arranged on the two sides of one end of the inner connector respectively, the outer connector is positioned on the inner connector in a sleeving mode, a fifth hinge lug is arranged on the side face of one end of the outer connector, the first hinge lug is rotationally connected with the third hinge lug, and the second hinge lug is rotationally connected with the fourth hinge lug and the fifth hinge lug. The hose is in butt joint with the lower connector and the inner connector. The problems that an existing dust collector flat suction structure is mostly designed in a fixed mode, when the existing dust collector flat suction structure faces complex use scenes, the dust collection effect is poor, flat suction grabbing and using are inconvenient, the pressure on the wrist of a user is large, and the use experience feeling is poor can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and more specifically, to a flat suction nozzle of a vacuum cleaner with multi-angle swing. Background Art

[0002] A handheld vacuum cleaner, as a common household cleaning tool, is small in size, very convenient to carry and use, and is more suitable for cleaning small spaces. The handheld vacuum cleaner needs to be connected to a flat suction nozzle of the vacuum cleaner to suck dust into the vacuum cleaner through the flat suction nozzle.

[0003] However, the structure of the existing flat suction nozzle of the vacuum cleaner itself and its docking with the air inlet of the vacuum cleaner mostly adopt a fixed design. In the face of some use scenarios such as gaps against the wall or close to the ground, the flat suction nozzle cannot fit the cleaning surface, resulting in poor dust suction effect. And in a complex working environment, the suction nozzle needs to contact the cleaning surface at a certain angle, which requires the user to adjust the posture of the vacuum cleaner. As a result, the vacuum cleaner is inconvenient to grasp and use, and the pressure on the user's wrist is also relatively large, resulting in a poor user experience. For example, the utility model patent with the authorized publication number of CN218792030 discloses a flat suction nozzle of a vacuum cleaner, which includes a suction hose, and a suction port is arranged at one end of the suction hose. The flat suction nozzle of the vacuum cleaner further includes a lighting component for providing illumination when the vacuum cleaner works. The lighting component includes a lighting lamp, and the lighting lamp is arranged on the suction port. The suction hose is made of a flexible material and has a smooth inner wall. The present utility model can realize lighting inside the gap while cleaning the gap. However, it still has the above-mentioned defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a flat suction nozzle of a vacuum cleaner with multi-angle swing to solve the problems that the existing flat suction nozzle of the vacuum cleaner mostly adopts a fixed design, resulting in poor dust suction effect, inconvenient grasping and use of the flat suction nozzle, relatively large pressure on the user's wrist, and poor user experience in the face of complex use scenarios.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A flat suction nozzle of a vacuum cleaner with multi-angle swing, comprising:

[0006] A suction nozzle;

[0007] A lower joint, positioned at the end of the suction nozzle, and first hinge shafts are arranged on both sides thereof;

[0008] A swivel joint, on both sides of which the X-axis direction at one end is provided with first hinge openings, and the first hinge shafts are rotatably connected to the first hinge openings;

[0009] On both sides of the other end of the swivel joint in the Z-axis direction, a first hinge ear and a second hinge ear are respectively arranged;

[0010] Upper joint, which includes an inner joint and an outer joint. On both sides of one end of the inner joint, a third hinge ear and a fourth hinge ear are respectively arranged;

[0011] The outer joint is sleeved and positioned on the inner joint, and a fifth hinge ear is arranged on one side surface of its one end;

[0012] The first hinge ear is rotatably connected to the third hinge ear, and the second hinge ear is rotatably connected to the fourth hinge ear and the fifth hinge ear;

[0013] Hose, which is docked with the lower joint and the inner joint.

[0014] As a further description of the above technical solution:

[0015] A second hinge interface is penetrated and arranged on the first hinge ear, and the convex structure on the third hinge ear is rotatably inserted into the second hinge interface;

[0016] A third hinge interface is penetrated and arranged on the second hinge ear. The fourth hinge ear abuts against the inner end surface of the second hinge ear through an arc-shaped support block, and the second hinge shaft on the inner end surface of the fifth hinge ear is rotatably connected to the third hinge interface.

[0017] As a further description of the above technical solution:

[0018] A threaded seat corresponding to the second hinge shaft is arranged on the outer end surface of the fourth hinge ear, and the second hinge shaft and the internal thread of the threaded seat are screwed and positioned with bolts.

[0019] As a further description of the above technical solution:

[0020] The first hinge ear is fitted in the notch at the top of the outer joint, and a plurality of sockets are also penetrated and arranged thereon. The hooks on the inner end surface of the decorative cover are inserted and clamped on the sockets;

[0021] In addition, the clamping groove at the end of the adapter is laterally clamped with the corresponding hook, and the notch abuts against the corresponding hook.

[0022] As a further description of the above technical solution:

[0023] A limiting ring is arranged on the inner end surface of the decorative cover, a bayonet is arranged on the limiting ring, the first clamping ribs radially arranged on the outer end surface of the first hinge ear abut against the inner side of the limiting ring, and the second clamping ribs radially arranged on the outer end surface of the first hinge ear are inserted into the bayonet.

[0024] As a further description of the above technical solution:

[0025] The axes of the first hinge ear, the third hinge ear, the second hinge ear, the fourth hinge ear, and the fifth hinge ear are inclined to the axes of the adapter and the upper joint;

[0026] A notch is provided on the side of the second hinge ear, and the fifth hinge ear is pressed laterally from the notch to the outer end face of the second hinge ear for clamping.

[0027] An arc-shaped guiding retaining wall is provided at the edge of the outer end face of the second hinge ear, and the guiding retaining wall abuts against the edge of the fifth hinge ear.

[0028] Sharp faces are provided on both sides of the relative end parts of the adapter and the upper joint.

[0029] As a further description of the above technical solution:

[0030] A locking buckle is further provided on the surface of the upper joint, and a clamping block for clamping and positioning with a clamping groove of the vacuum cleaner air inlet when the upper joint is inserted into the vacuum cleaner air inlet is provided on the surface of the locking buckle.

[0031] The locking buckle is rotatably connected in a guide seat on the surface of the inner joint through a third hinge shaft at the end.

[0032] A pressing block is provided on the outer end face of the locking buckle, and the pressing block extends from a through hole to the outer surface of the outer joint.

[0033] An elastic member is provided between the inner end face of the locking buckle and the guide seat.

[0034] As a further description of the above technical solution:

[0035] The edge of the pressing block and the supporting rib on the outer surface of the locking buckle abut against the inner wall of the outer joint.

[0036] As a further description of the above technical solution:

[0037] The wavy or spiral convex structure on the surface of the hose is tightly inserted or sleeved on the concave structure on the interfaces of the lower joint and the inner joint.

[0038] As a further description of the above technical solution:

[0039] A first spherical interface is provided in the lower joint and the inner joint, a second spherical interface is provided at the end of the hose, and the first spherical interface is rotatably inserted or sleeved on the second spherical interface.

[0040] A wedge-shaped surface is provided at the edge of the first spherical interface or / and the second spherical interface.

[0041] In summary, due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0042] 1. The flat suction nozzle of the vacuum cleaner of the present invention adopts a three-section articulated design of a lower joint, a swivel joint, and an upper joint, which can rotate between structures along the X-axis and the Z-axis, realizing multi-angle swing and rotation of the upper suction nozzle of the vacuum cleaner, so as to meet the adjustment of the use posture of the vacuum cleaner in different use environments, improve the use convenience and the comfort of holding the vacuum cleaner, and achieve dust-free cleaning without dead corners. When in use, by relatively rotating the swivel joint and the lower joint, the swing of the suction nozzle in the vertical plane can be realized, and the elevation angle can be adjusted. By relatively rotating the swivel joint and the upper joint, the swing of the suction nozzle in the horizontal plane or a plane at a certain inclination to the horizontal plane can be realized, and the horizontal orientation can be adjusted. Furthermore, by cooperating with the holding posture of the vacuum cleaner suitable for the human hand, the vacuum cleaner can be held more labor-savingly, and it can also ensure that the suction nozzle meets the use requirements such as extending into narrow spaces and fitting the surface of the cleaning object, improving the use convenience, and reducing the pressure on the user's wrist caused by grasping the vacuum cleaner, thus improving the use comfort.

[0043] 2. The hinge at the bottom of the hinge structure between the swivel joint and the upper joint adopts a structural design of multi-layer lateral plugging and stacked fitting, which can further improve the structural strength at the main stress points of the flat suction structure, and prevent the inclination and offset between the hinge structures from affecting the rotation operation; through the plugging of the decorative cover on the first hinge ear, the hook penetrates through the socket and abuts against the card slot and the notch, thereby realizing the lateral pre-tightening limit of the two hinge ears, preventing the swivel joint and the upper joint from shaking and shifting radially along the hinge axis when rotating, and thus ensuring the stability of rotation.

[0044] 3. The rotation axis of the Z-axis rotation adjustment structure formed by the hinge of the swivel joint and the upper joint is inclined to the axis of the flat suction structure, so that when the swivel joint and the upper joint rotate, there will be a relative folding with a vertical displacement, thereby reducing the torque and other loads applied to the hinge shaft of the Z-axis rotation adjustment structure, reducing the working pressure, and improving the structural stability and service life.

[0045] 4. The conventional method of inserting the end of the hose into the flat suction housing joint is changed to a multi-angle rotatable design of two spherical joints. Thus, most of the deformation of the hose during the rotation of the hinge structure is converted into the relative rotation of the spherical joints, thereby improving the problems such as the damage of the structure caused by the excessive bending of the hose during the rotation of the hinge structure and the loosening and air leakage at the end connection, improving the service life of the hose, and ensuring the airtight and stable use of the flat suction nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0047] Figure 1 Schematic diagram of the structure of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0048] Figure 2 Exploded view of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0049] Figure 3 Exploded view of the adapter and decorative cover of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0050] Figure 4 Schematic diagram of the structure of the adapter of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0051] Figure 5 Exploded view of the upper joint of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0052] Figure 6 Schematic diagram of the structure of the inner joint of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0053] Figure 7 Schematic diagram of the structure of the locking buckle of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0054] Figure 8 Cross-sectional view of the connection node of the lower joint and the hose of a flat suction nozzle of a vacuum cleaner with multi-angle swing

[0055] Legend:

[0056] 1. Suction nozzle

[0057] 2. Lower joint; 21. First hinge shaft; 22. First spherical interface; 23. Wedge surface

[0058] 3. Adapter; 31. First hinge interface; 32. First hinge ear; 321. Second hinge interface; 322. Socket; 323. Card slot; 324. First rib; 325. Second rib; 33. Second hinge ear; 331. Third hinge interface; 332. Notch; 333. Guide fence; 34. Pointed surface

[0059] 4. Inner joint; 41. Third hinge ear; 42. Fourth hinge ear; 43. Threaded seat; 44. Arc support block

[0060] 5. Outer joint; 51. Fifth hinge ear; 52. Notch; 53. Second hinge shaft; 54. Through hole

[0061] 6. Hose; 61. Second spherical interface

[0062] 7. Decorative cover; 71. Hook; 72. Limit ring; 73. Bayonet

[0063] 8. Locking buckle; 81. Clamping block; 82. Third hinge shaft; 83. Pressing block; 84. Elastic member; 85. Support rib. Detailed implementation manners

[0064] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0065] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0066] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0067] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0068] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Embodiment 1:

[0070] Please refer to Figure 1-8 , the present invention provides a technical solution: a multi-angle swing flat suction nozzle of a vacuum cleaner, including:

[0071] Suction nozzle 1;

[0072] The lower joint 2 is positioned at the end of the nozzle 1, and first hinge shafts 21 are arranged on both sides thereof;

[0073] The adapter joint 3 has first hinge openings 31 arranged on both sides facing the X-axis at one end thereof, and the first hinge shafts 21 are rotatably connected to the first hinge openings 31;

[0074] When the X-axis rotation adjustment structure of the nozzle 1 is in use, by relatively rotating the adapter joint 3 and the lower joint 2, the nozzle 1 can be swung on the vertical plane to achieve elevation angle adjustment, so as to cooperate with a vacuum cleaner gripping posture suitable for the human hand, making the vacuum cleaner gripping more labor-saving, and at the same time ensuring that the nozzle 1 meets the usage requirements such as extending into narrow spaces and fitting the surface of cleaning objects, improving the convenience of use, and reducing the pressure on the user's wrist during vacuum cleaner gripping, thereby improving the usage comfort.

[0075] On both sides facing the Z-axis at the other end of the adapter joint 3, a first hinge ear 32 and a second hinge ear 33 are respectively arranged;

[0076] The upper joint includes an inner joint 4 and an outer joint 5. On both sides at one end of the inner joint 4, a third hinge ear 41 and a fourth hinge ear 42 are respectively arranged;

[0077] The outer joint 5 is sleeved and positioned on the inner joint 4, and a fifth hinge ear 51 is arranged on one side of one end thereof;

[0078] The first hinge ear 32 is rotatably connected to the third hinge ear 41, and the second hinge ear 33 is rotatably connected to the fourth hinge ear 42 and the fifth hinge ear 51;

[0079] When the Z-axis rotation adjustment structure of the nozzle 1 is in use, by relatively rotating the adapter joint 3 and the upper joint, the nozzle 1 can be swung on the horizontal plane or a plane at a certain inclination angle to the horizontal plane to achieve the adjustment of the horizontal orientation, so as to cooperate with a vacuum cleaner gripping posture suitable for the human hand, making the vacuum cleaner gripping more labor-saving, and at the same time ensuring that the nozzle 1 meets the usage requirements such as extending into narrow spaces and fitting the surface of cleaning objects, improving the convenience of use, and reducing the pressure on the user's wrist during vacuum cleaner gripping, thereby improving the usage comfort.

[0080] The hose 6 is docked with the lower joint 2 and the inner joint 4.

[0081] The flat suction nozzle of the vacuum cleaner of the present invention can rotate between structures along the X-axis and Z-axis through a three-section articulated design of a lower joint, a swivel joint, and an upper joint, realizing multi-angle swinging and rotation of the upper suction nozzle of the vacuum cleaner, so as to meet the adjustment of the use posture of the vacuum cleaner in different use environments, improve the convenience of use and the comfort of holding the vacuum cleaner, and achieve dust-free cleaning without dead corners. When in use, by relatively rotating the swivel joint and the lower joint, the suction nozzle can swing on the vertical plane to realize elevation angle adjustment. By relatively rotating the swivel joint and the upper joint, the suction nozzle can swing on the horizontal plane or a plane with a certain inclination angle to the horizontal plane to realize the adjustment of the horizontal orientation. Furthermore, by matching the holding posture of the vacuum cleaner suitable for the human hand, the vacuum cleaner can be held more labor-saving, and it can also ensure that the suction nozzle meets the use requirements such as extending into a narrow space and fitting the surface of the cleaning object, improving the convenience of use, and reducing the pressure on the user's wrist caused by grasping the vacuum cleaner, thus improving the use comfort.

[0082] A second hinge interface 321 is penetrated and provided on the first hinge ear 32. The protruding structure on the third hinge ear 41 is rotatably inserted into the second hinge interface 321. A third hinge interface 331 is penetrated and provided on the second hinge ear 33. The fourth hinge ear 42 abuts against the inner end surface of the second hinge ear 33 through an arc-shaped support block 44. The second hinge shaft 53 on the inner end surface of the fifth hinge ear 51 is rotatably connected to the third hinge interface 331.

[0083] In this embodiment, the Z-axis rotation adjustment structure, that is, the articulated structure of the swivel joint 3 and the upper joint, adopts a structural design of multi-layer lateral insertion and stacked fitting at the articulated part at the bottom of the structure, which can further improve the structural strength at the main stress points of the flat suction nozzle structure, and avoid tilting and offset between the articulated structures, thus affecting the rotation operation.

[0084] A threaded seat 43 corresponding to the second hinge shaft 53 is provided on the outer end surface of the fourth hinge ear 42. The inner threads of the second hinge shaft 53 and the threaded seat 43 are screwed and positioned with bolts. The above-mentioned multi-layer structure of lateral insertion and stacked fitting is axially positioned by bolts for the fourth hinge ear 42 and the fifth hinge ear 51 on the outside, thereby ensuring the axial clamping stability of the second hinge ear 33, and further ensuring that there is no axial shaking and displacement between the structures when the swivel joint 3 and the upper joint rotate relatively, thereby further ensuring the unobstructed and smooth rotation and orientation adjustment of the swivel joint 3 and the upper joint.

[0085] The manufacturing process of a multi-angle swinging flat suction nozzle of a vacuum cleaner in this embodiment includes: during assembly, first connect the hose 6 to the interfaces at the opposite ends of the lower joint 2 and the inner joint 4, and ensure the tightness of the connection to avoid air leakage or leakage problems at this location during use; press the adapter 3 against the lower joint 2 so that the first hinge shaft 21 is snapped onto the first hinge interface 31, and test the smoothness of rotation; tilt the inner joint 4 towards the adapter 3 so that the third hinge ear 41 is joined to the inner end face of the first hinge ear 32, and the convex structure is inserted into the second hinge interface 321. Then, rotate the inner joint 4 relative to the adapter 3 so that the third hinge ear 41 abuts against the inner side of the second hinge ear 33; sleeved on the inner joint 4 is the positioning outer joint 5, and the second hinge shaft 53 of the fifth hinge ear 51 is inserted into the third hinge interface 331, and structural positioning and component shaping are carried out through bolts, and the smoothness of rotation is tested. The above installation steps adopt the method of first docking the adapter 3 and the inner joint 4, and then docking and positioning them with the outer joint 5. It is also possible to first dock the inner joint 4 and the outer joint 5, and then assemble the adapter 3 with the two. Finally, the inner joint 4 and the outer joint 5 are positioned through bolts. The entire installation operation is labor-saving, convenient, and the process is simple, which can meet the requirements of mass production, efficient assembly, and use of the flat suction nozzle of the vacuum cleaner.

[0086] During use, by relatively rotating the adapter 3 and the lower joint 2, the swing of the suction nozzle 1 in the vertical plane can be realized to achieve elevation angle adjustment. By relatively rotating the adapter 3 and the upper joint, the swing of the suction nozzle 1 in the horizontal plane or a plane at a certain inclination angle to the horizontal plane can be realized to achieve horizontal orientation adjustment. Furthermore, it can cooperate with a suitable grasping posture of the vacuum cleaner for the hand, making it more labor-saving to grasp the vacuum cleaner, and at the same time ensuring that the suction nozzle 1 meets the use requirements such as reaching into narrow spaces and fitting the surface of the cleaning object, improving the convenience of use, and reducing the pressure on the user's wrist during grasping the vacuum cleaner, thus improving the comfort of use.

[0087] Embodiment Two:

[0088] Please refer to Figure 2-4 , on the basis of the above Embodiment One, preferably, the first hinge ear 32 is joined to the notch 52 at the top of the outer joint 5, and several sockets 322 are also provided through it. The hooks 71 on the inner end face of the decorative cover 7 are inserted and snapped onto the sockets 322. The slot 323 at the end of the adapter 3 is laterally snapped onto the corresponding hooks 71, and the notch 52 abuts against the corresponding hooks 71.

[0089] In this embodiment, the structural reinforcement is performed on the hinge structure of the first hinge ear 32 and the third hinge ear 41, which is the other hinge point of the main bearing point of the flat suction structure relative to the second hinge ear 33, the fourth hinge ear 42, and the fifth hinge ear 51. Through the insertion of the decorative cover 7 on the first hinge ear 32, the hook 71 penetrates the socket 322 and abuts against the card slot 323 and the notch 52, thereby realizing the lateral pre-tightening limit of the two hinge ears, avoiding the radial shaking and displacement along the hinge axis when the adapter 3 and the upper joint rotate, and thus ensuring the stability of rotation.

[0090] A limiting ring 72 is arranged on the inner end face of the decorative cover 7, and a bayonet 73 is arranged on the limiting ring 72. The first ribs 324 radially arranged on the outer end face of the first hinge ear 32 abut against the inner side of the limiting ring 72, and the second ribs 325 radially arranged on the outer end face thereof are inserted into the bayonet 73. Through the arrangement of the above two kinds of ribs, the assembly strength and assembly convenience of the decorative cover 7 on the first hinge ear 32 can be further improved.

[0091] The assembly process of a multi-angle swing flat suction cleaner in this embodiment includes: after the adapter 3, the inner joint 4, and the outer joint 5 are assembled and docked, the hook 71, the limiting ring 72, and the bayonet 73 are respectively aligned with the socket 322, the first rib 324, and the second rib 325. Then, the decorative cover 7 is pressed on the first hinge ear 32, thereby realizing the insertion and positioning of the above structure, and at the same time, making the corresponding hook 71 abut against the card slot 323 and the notch 52.

[0092] Embodiment Three:

[0093] Please refer to Figure 3 , on the basis of the above Embodiment One, preferably, the axes of the first hinge ear 32, the third hinge ear 41, the second hinge ear 33, the fourth hinge ear 42, and the fifth hinge ear 51 are inclined to the axes of the adapter 3 and the upper joint. This design makes the rotation axis of the Z-axis rotation adjustment structure formed by the hinge connection of the adapter 3 and the upper joint inclined to the axis of the flat suction structure, so that when the adapter 3 and the upper joint rotate, there will be a relative folding with vertical displacement, thereby reducing the torque and other loads applied to the hinge axis of the Z-axis rotation adjustment structure, reducing the working pressure, and improving the structural stability and service life.

[0094] The second hinge ear 33 is laterally provided with a notch 332. The fifth hinge ear 51 is laterally pressed from the notch 332 to the outer end face of the second hinge ear 33 for clamping. An arc-shaped guiding retaining wall 333 is arranged at the edge of the outer end face of the second hinge ear 33. The guiding retaining wall 333 abuts against the edge of the fifth hinge ear 51. Sharp faces 34 are arranged on both sides of the relative end parts of the adapter 3 and the upper joint. Among them, the notch 332 makes the alignment and lateral assembly of the hinge structure more convenient; the guiding retaining wall 333 can guide and limit the fifth hinge ear 51 to further improve the structural strength and structural stability of the hinge structure; the sharp faces 34 are mainly used for structural avoidance during the rotation of the adapter 3 and the upper joint and the limitation of the rotation range, to avoid structural collision and interference, and to prevent the reduction of structural stability caused by the excessive rotation angle of the adapter 3 and the upper joint.

[0095] Embodiment 4:

[0096] Please refer to Figure 2 、 7 On the basis of the above Embodiment 1, preferably, a locking buckle 8 is further arranged on the surface of the upper joint. A clamping block 81 for clamping and positioning with a clamping groove of the vacuum cleaner air inlet when the upper joint is inserted into the vacuum cleaner air inlet is arranged on the surface of the locking buckle 8. The locking buckle 8 is rotatably connected in a guide seat on the surface of the inner joint 4 through a third hinge shaft 82 at the end. A pressing block 83 is arranged on the outer end face of the locking buckle 8. The pressing block 83 extends from a through hole 54 to the outer surface of the outer joint 5. An elastic member 84 is arranged between the inner end face of the locking buckle 8 and the guide seat.

[0097] The edge of the pressing block 83 and the supporting ribs 85 on the outer surface of the locking buckle 8 abut against the inner wall of the outer joint 5 to reduce the impact force during the flipping and resetting of the locking buckle 8 towards the outer joint 5 under the action of the reset elastic force of the elastic member 84 when the pressure on the pressing block 83 is removed, improve the service life of the structure, and avoid structural damage such as cracking of the structure due to impact during use.

[0098] The assembly process of a multi-angle swing flat suction nozzle of a vacuum cleaner and the air inlet of the vacuum cleaner in this embodiment includes: squeezing the pressing block 83 to press the locking buckle 8 into the guide seat. Then, insert the upper joint into the air inlet, release the pressing block 83, so that the locking buckle 8 rotates and resets along the third hinge shaft 82 under the action of the reset elastic force of the elastic member 84. The clamping groove of the vacuum cleaner air inlet is clamped and positioned on the clamping block 81, and the pressing block 83 is inserted into the through hole 54 to achieve structural positioning.

[0099] Embodiment 5:

[0100] Please refer to Figure 1 、 2, on the basis of the above-mentioned first embodiment, preferably, the wavy or spiral convex structure on the surface of the hose 6 is tightly inserted or sleeved on the concave structure on the interfaces of the lower joint 2 and the inner joint 4, so as to improve the tightness of the docking between the hose 6 and the interfaces of the lower joint 2 and the inner joint 4 and avoid air leakage problems.

[0101] Embodiment Six:

[0102] Please refer to Figure 8 , on the basis of the above-mentioned first embodiment, preferably, a first spherical interface 22 is provided inside the lower joint 2 and the inner joint 4, and a second spherical interface 61 is provided at the end of the hose 6. The first spherical interface 22 is rotatably inserted or sleeved on the second spherical interface 61, and a wedge surface 23 is provided at the edge of the first spherical interface 22 or / and the second spherical interface 61. In order to avoid problems such as structural damage caused by excessive bending of the hose during the rotation of the hinge structure and loosening and air leakage at the end connection, the conventional way of inserting the end of the hose into the flat suction housing joint is changed to a multi-angle rotatable design of two spherical interfaces. Thus, most of the deformation of the hose during the rotation of the hinge structure is converted into the relative rotation of the spherical interfaces, thereby improving problems such as structural damage caused by excessive bending of the hose during the rotation of the hinge structure and loosening and air leakage at the end connection, increasing the service life of the hose, and ensuring airtight and stable use of the flat suction.

[0103] In summary, due to the adoption of the above technical solutions, a flat suction of a vacuum cleaner with multi-angle swing in this embodiment has the following beneficial effects compared with the prior art:

[0104] 1. The flat suction of the vacuum cleaner of the present invention adopts a three-section hinge design of a lower joint, a swivel joint, and an upper joint, and can rotate between structures along the X-axis and Z-axis, realizing multi-angle swing and rotation of the upper suction nozzle of the vacuum cleaner, so as to meet the adjustment of the use posture of the vacuum cleaner in different use environments, improve the convenience of use and the comfort of holding the vacuum cleaner, and achieve dust-free cleaning without dead angles. During use, by relatively rotating the swivel joint and the lower joint, the swing of the suction nozzle in the vertical plane can be realized, and the elevation angle can be adjusted. By relatively rotating the swivel joint and the upper joint, the swing of the suction nozzle in the horizontal plane or a plane at a certain inclination to the horizontal plane can be realized, and the horizontal orientation can be adjusted. Furthermore, combined with a holding posture of the vacuum cleaner suitable for the human hand, it makes the vacuum cleaner easier to hold, can ensure that the suction nozzle meets the use requirements such as extending into narrow spaces and fitting the surface of the cleaning object, improves the convenience of use, and reduces the pressure on the user's wrist when grasping the vacuum cleaner, thereby improving the use comfort.

[0105] 2. The hinge joint at the bottom of the hinge structure between the adapter and the upper joint adopts a multi-layer structure with lateral insertion and stacked fitting, which can further improve the structural strength at the main stress points of the flat suction structure and prevent tilting and offset between the hinge structures, thus affecting the rotation operation. Through the insertion of the decorative cover on the first hinge ear, the hook penetrates through the socket and abuts against the card slot and the notch, thereby realizing the lateral pre-tightening limit of the two hinge ears and preventing the radial shaking and displacement along the hinge axis when the adapter and the upper joint rotate, thus ensuring the stability of rotation.

[0106] 3. The rotation axis of the Z-axis rotation adjustment structure formed by the hinge connection between the adapter and the upper joint is inclined to the axis of the flat suction structure, so that relative folding with vertical displacement will occur when the adapter and the upper joint rotate, thereby reducing the torque and other loads applied to the hinge axis of the Z-axis rotation adjustment structure, reducing the working pressure, and improving the structural stability and service life.

[0107] 4. The conventional way of inserting the end of the hose into the flat suction housing joint is changed to a multi-angle rotation design of two spherical interfaces. Thus, most of the deformation of the hose during the rotation of the hinge structure is converted into the relative rotation of the spherical interfaces, thereby improving the problems such as structural damage caused by excessive bending of the hose during the rotation of the hinge structure and loosening and air leakage at the end connection, increasing the service life of the hose, and ensuring the airtight and stable use of the flat suction.

[0108] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A vacuum cleaner with multi-angle swing and flat suction, characterized in that: include: Suction nozzle; A lower joint, which is positioned at the end of the suction nozzle and has first hinge shafts disposed on both sides thereof; The adapter has first hinged ports on both sides of one end facing the X axis, the first hinged shaft is rotatably connected to the first hinged port, and first hinged ears and second hinged ears are respectively provided on both sides of the other end facing the Z axis; The upper joint comprises an inner joint and an outer joint, wherein a third hinged ear and a fourth hinged ear are respectively arranged on both sides of one end of the inner joint, the outer joint is sleeved and positioned on the inner joint, and a fifth hinged ear is arranged on the side of one end of the outer joint, the first hinged ear is rotatably connected to the third hinged ear, and the second hinged ear is rotatably connected to the fourth hinged ear and the fifth hinged ear; A hose is connected to the lower joint and the inner joint.

2. A multi-angle swinging vacuum cleaner flat suction according to claim 1, characterized in that: A second hinge port is provided through the first hinged ear, the raised structure on the third hinged ear can be rotatably inserted into the second hinge port, a third hinge port is provided through the second hinged ear, the fourth hinged ear is abutted against the inner end face of the second hinged ear through an arc-shaped support block, and the second hinge axis on the inner end face of the fifth hinged ear is rotatably connected to the third hinge port.

3. A multi-angle swinging vacuum cleaner flat suction according to claim 2, characterized in that: The outer end surface of the fourth hinged ear is provided with a threaded seat corresponding to the second hinged shaft, and the internal threads of the second hinged shaft and the threaded seat are screwed and positioned with a bolt.

4. The multi-angle swinging flat suction of the vacuum cleaner according to claim 1, characterized in that: The first hinged ear is assembled at the notch at the top of the external joint, and a plurality of sockets are also arranged thereon. The hooks on the inner end surface of the decorative cover are inserted into and clamped on the sockets, the grooves at the ends of the adapter are laterally clamped with the corresponding hooks, and the notches are in contact with the corresponding hooks.

5. The multi-angle swinging flat suction of the vacuum cleaner according to claim 4, characterized in that: A limiting ring is arranged on the inner end surface of the decorative cover, and a bayonet is arranged on the limiting ring. A first clamping rib arranged radially on the outer end surface of the first hinged ear abuts against the inner side of the limiting ring, and a second clamping rib arranged radially on the outer end surface is inserted into the bayonet.

6. The multi-angle swinging flat suction of the vacuum cleaner according to claim 1, characterized in that: The axes of the first articulated ear, the third articulated ear, the second articulated ear, the fourth articulated ear and the fifth articulated ear are inclined to the axes of the adapter and the upper joint, the second articulated ear is laterally provided with a notch, the fifth articulated ear is laterally pressed to the outer end face of the second articulated ear by the notch and is clamped, an arc-shaped guide enclosure is provided at the edge of the outer end face of the second articulated ear, the guide enclosure abuts against the edge of the fifth articulated ear, and pointed surfaces are provided on both sides of the opposite ends of the adapter and the upper joint.

7. The multi-angle swinging flat suction of the vacuum cleaner according to claim 1, characterized in that: The surface of the upper joint is also provided with a locking buckle, and the surface of the locking buckle is provided with a clamping block for clamping and positioning with the clamping slot of the vacuum cleaner air inlet when the upper joint is plugged into the vacuum cleaner air inlet, and the locking buckle is rotatably connected to the guide seat on the surface of the inner joint through the third hinge shaft at the end, and a pressing block is provided on the outer end surface of the locking buckle, and the pressing block extends from the through hole to the outer surface of the outer joint, and an elastic member is provided between the inner end surface of the locking buckle and the guide seat.

8. The multi-angle swinging flat suction of the vacuum cleaner according to claim 7, characterized in that: The edge of the pressing block and the supporting ribs on the outer surface of the locking buckle abut against the inner wall of the outer joint.

9. The multi-angle swinging flat suction of the vacuum cleaner according to claim 1, characterized in that: The wavy or spiral convex structure on the surface of the hose is tightly plugged or sleeved on the concave structure on the interface of the lower joint and the inner joint.

10. The multi-angle swinging flat suction of the vacuum cleaner according to claim 1, characterized in that: A first spherical interface is arranged in the lower joint and the inner joint, a second spherical interface is arranged at the end of the hose, the first spherical interface can be rotatably inserted into or sleeved on the second spherical interface, and a wedge surface is arranged on the edge of the first spherical interface and / or the second spherical interface.

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