Telescopic assembly and cleaning equipment

Abstract

The utility model relates to the technical field of cleaning instruments, and discloses a telescopic assembly and cleaning equipment. The telescopic pipe is connected with a connecting rod, when the telescopic pipe is in an extending state, a mounting cavity is formed between the connecting rod and the cavity wall of the mounting cavity, and when the telescopic pipe is in a retracting state, the telescopic pipe is located in the mounting cavity; and the supporting structure is provided with a supporting position supported between the connecting rod and the cavity wall of the mounting cavity, and when the telescopic pipe is in the stretching-out state, the supporting structure is located at the supporting position. When the telescopic pipe is in the stretching-out state, the supporting structure is located at the supporting position, the supporting structure is supported between the connecting rod and the cavity wall of the installation cavity, the supporting effect on the connecting rod is achieved, the number of acting points of the connecting rod is increased, and the root stress of the connecting rod is reduced; and the phenomenon that the root is broken due to large stress on the root when the telescopic pipe extends out is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning instruments, in particular to a telescopic component and a cleaning device. Background Art

[0002] Mite removal devices are cleaning devices used to remove dust, mites and other allergens from textile items such as beds, sofas, carpets, and clothing. Mite removal cleaning devices generally include a host and a grip handle, wherein the host is generally composed of a roller brush, a suction port, a dust cup, a motor and other components. When using a mite removal vacuum cleaner for cleaning, the dust mites beaten up by the roller brush are sucked into the dust cup through the suction port to achieve the purpose of cleaning.

[0003] The related art discloses a cleaning device, including a main body component, a handle and a telescopic tube. One end of the telescopic tube is fixedly connected to the main body component, and the second end is fixed in the handle. The telescopic tube has an extended state and a retracted state. When the user needs to clean the bed or a relatively large area, the telescopic tube is pulled open to put the telescopic tube in an extended state. At this time, the user can clean the bed or a relatively large area by standing beside the bed or standing in one position without bending over, and the cleaning is effortless. When the cleaning is completed, the telescopic tube is retracted to put the telescopic tube in a retracted state. The whole machine occupies a small volume and is easy to store. By fixing the second end of the telescopic tube inside the handle, the appearance is beautiful and the volume of the whole machine is not increased.

[0004] In the above-mentioned related art, the first end of the telescopic tube is connected to a first joint, and a second joint is provided in the main assembly, and the first joint is plugged into the second joint. When the telescopic tube is in an extended state, the first joint is suspended in the second joint, and the telescopic tube is a cantilever structure, and the telescopic tube is supported by the first joint. After the telescopic tube is extended, the overall length is relatively long, and when the handle is used to push and pull the main assembly forward and backward, the handle will be subjected to up and down forces, which makes the first joint subject to greater stress and there is a risk of fracture and failure. Utility Model Content

[0005] In view of this, the utility model provides a telescopic assembly and a cleaning device to solve the problem in the related art that when the telescopic tube is in an extended state, the first joint is subjected to a large stress and is prone to breakage.

[0006] In a first aspect, the utility model provides a telescopic assembly, comprising:

[0007] case;

[0008] A telescopic tube connected to a connecting rod, wherein when the telescopic tube is in an extended state, a mounting cavity is formed between the connecting rod and the housing, and when the telescopic tube is in a retracted state, the telescopic tube is located in the mounting cavity;

[0009] The support structure has a support position supported between the connecting rod and the cavity wall of the installation cavity. When the telescopic tube is in the extended state, the support structure is in the support position.

[0010] Beneficial effect: When the telescopic tube is in the extended state, the supporting structure is in the supporting position. The supporting structure is supported between the connecting rod and the wall of the installation cavity, supporting the connecting rod, increasing the fulcrum points of the connecting rod, reducing the force on the root of the connecting rod, and avoiding root fracture due to the large stress on the root when the telescopic tube is extended.

[0011] In an optional embodiment, the connecting rod and / or the cavity wall of the mounting cavity are provided with a mounting groove, the support structure also has an avoidance position retracted into the mounting groove, when the telescopic tube is in the retracted state, the support structure is in the avoidance position, the telescopic assembly also includes a reset member, when the telescopic tube is in the extended state, the reset member resets the support structure from the avoidance position to the support position.

[0012] Beneficial effect: by setting the installation groove, when the telescopic tube is retracted, the telescopic tube overcomes the reset force of the reset member to retract the supporting structure into the installation groove, and the supporting structure will not interfere with the extension and contraction of the telescopic tube. When the telescopic tube is in the extended state, the reset force of the reset member automatically resets the supporting structure from the avoidance position to the supporting position, supporting the connecting rod, increasing the fulcrum points of the connecting rod, reducing the force on the root of the connecting rod, and avoiding root fracture due to the large stress on the root when the telescopic tube is extended.

[0013] In an optional embodiment, the support structure is hinged in the mounting groove, the reset member is a torsion spring, and the torsion spring is arranged between the support structure and the mounting groove.

[0014] Beneficial effect: Since the support structure is hinged in the installation groove, it can rotate in the installation groove, and the reset member is a torsion spring, and the torsion force of the torsion spring can reset the support structure from the avoidance position to the supporting position.

[0015] In an optional embodiment, the support structure is provided with an installation shaft and a first limiting groove, the torsion spring is sleeved on the installation shaft, the first end of the torsion spring is fixed in the first limiting groove or passes through the first limiting groove and then abuts against the support structure, and the second end of the torsion spring abuts against the installation groove.

[0016] Beneficial effect: The torsion spring is sleeved on the installation shaft, the first end of the torsion spring is fixed in the first limiting groove or is abutted against the support structure after passing through the first limiting groove, and the second end of the torsion spring is abutted against the installation groove. The setting of the installation shaft and the first limiting groove facilitates the installation of the torsion spring.

[0017] In an optional embodiment, a second limiting groove is provided in the installation groove, and the second end of the torsion spring is limited in the second limiting groove.

[0018] Beneficial effect: The provision of the second limiting groove can limit the second end of the torsion spring, ensuring that the torsion spring can generate a restoring force.

[0019] In an optional embodiment, one end of the mounting shaft is fixed and the other end is suspended.

[0020] Beneficial effect: Since one end of the mounting shaft is fixed and the other end is suspended, it is convenient to put the torsion spring on the mounting shaft. In addition, the second limiting groove cooperates with the first limiting groove to prevent the torsion spring from moving along the mounting shaft and falling off the mounting shaft.

[0021] In an optional embodiment, a first guide surface is provided at the first end of the support structure, and when the telescopic tube is extended, the tube sleeve of the telescopic tube presses against the first guide surface located inside the telescopic tube, so that the support structure rotates toward the avoidance position.

[0022] Beneficial effect: When the telescopic tube is extended, the tube sleeve of the telescopic tube presses against the first guide surface located on the inner side of the telescopic tube, so that the support structure rotates to the avoidance position, which can avoid the extension of the telescopic tube and prevent the telescopic tube from colliding and interfering with the corners on the support structure and getting stuck when extending.

[0023] In an optional embodiment, the support structure includes a connecting arm and two spaced-apart and oppositely disposed support arms, one end of the support arm is connected to the connecting arm, and one end of the mounting shaft is fixedly disposed on one of the support arms and extends toward the other support arm.

[0024] Beneficial effect: One end of the mounting shaft is fixed on one of the support arms and extends toward the other support arm, that is, the mounting shaft is located between the two support arms. The torsion spring is sleeved on the mounting shaft, which can make the middle part of the support structure bear force and make the structure more stable.

[0025] In an optional embodiment, rotating shafts are provided on both sides of the supporting structure, and the mounting groove is provided with rotating shaft holes, and the rotating shaft is rotatably disposed in the rotating shaft holes.

[0026] Beneficial effect: By arranging rotating shafts on both sides of the supporting structure, the supporting structure can be stably rotated.

[0027] In an optional embodiment, a groove wall of the mounting groove is provided with a guide groove, and the rotating shaft is suitable for sliding along the guide groove into the rotating shaft hole;

[0028] A second guide surface is provided at the end of the rotating shaft.

[0029] Beneficial effect: The setting of the guide groove facilitates the smooth installation of the rotating shaft. By setting a second guide surface at the end of the rotating shaft, the end area of ​​the rotating shaft can be reduced, making it easier for the end of the rotating shaft to extend into the guide groove, and facilitating the installation of the supporting structure into the installation groove.

[0030] In an optional embodiment, a first supporting surface is provided at the first end of the supporting structure, and a second supporting surface is provided at the second end of the supporting structure. When the supporting structure is in the supporting position, the first supporting surface abuts against the connecting rod or the cavity wall of the mounting cavity, and the second supporting surface abuts against the mounting groove.

[0031] Beneficial effect: When the supporting structure is in the supporting position, the first supporting surface abuts against the wall of the connecting rod or the mounting cavity, and the second supporting surface abuts against the mounting groove, which can increase the contact area between the supporting structure and the mounting groove, as well as the connecting rod or the mounting cavity, thereby ensuring the supporting effect and effectively supporting the connecting rod.

[0032] In an optional embodiment, the mounting groove is provided with a limiting surface, and when the supporting structure is in the supporting position, the second supporting surface abuts against the limiting surface.

[0033] Beneficial effect: when the supporting structure is in the supporting position, the second supporting surface abuts against the limiting surface, the supporting structure and the mounting groove have a larger contact area, and the limiting surface can also prevent the supporting structure from continuing to rotate.

[0034] In a second aspect, the utility model also provides a cleaning device, comprising:

[0035] The telescopic component.

[0036] Beneficial effect: When the telescopic tube of the cleaning equipment is in the extended state, the supporting structure is in the supporting position. The supporting structure is supported between the connecting rod and the wall of the installation cavity, supporting the connecting rod, increasing the fulcrum points of the connecting rod, reducing the force on the root of the connecting rod, and avoiding root fracture due to the large stress on the root when the telescopic tube is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A cross-sectional view of a cleaning device according to an embodiment of the utility model;

[0039] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0040] Figure 3 for Figure 1 A schematic diagram of the structure of the middle connecting rod;

[0041] Figure 4 for Figure 1 A schematic diagram of the structure of the middle support structure at a viewing angle;

[0042] Figure 5 for Figure 1 A schematic diagram of the structure of the middle support structure at another viewing angle;

[0043] Figure 6 A cross-sectional view of a cleaning device according to an embodiment of the utility model when the telescopic tube is in a retracted state;

[0044] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0045] Figure 8 for Figure 6 Enlarged view of point C in the middle;

[0046] Fig. 9 for Figure 6 The enlarged view of point D in the middle;

[0047] Fig.10 A cross-sectional view of a cleaning device according to an embodiment of the utility model when the telescopic tube is in the process of extending and the tube sleeve contacts the first guide surface;

[0048] Fig.11 for Fig.10 Enlarged view of point E in the middle;

[0049] Fig.12 This is a cross-sectional view of a cleaning device according to an embodiment of the utility model, when the telescopic tube is in the process of being extended, and the supporting structure avoids the tube sleeve;

[0050] Fig.13 for Fig.12 The enlarged view of F in the middle;

[0051] Fig.14 This is a cross-sectional view of a cleaning device according to an embodiment of the utility model when the telescopic tube is in an extended state.

[0052] Description of reference numerals:

[0053] 1. Shell; 2. Installation cavity; 201. Boss; 3. Telescopic tube; 301. Tube body; 302. Tube sleeve; 303. Elastic protrusion; 4. Connecting rod; 5. Support structure; 501. Installation shaft; 502. Connecting arm; 503. Support arm; 504. Rotating shaft; 505. Second guide surface; 506. First guide surface; 507. Second supporting surface; 508. First supporting surface; 509. First limiting groove; 6. Installation groove; 601. Second limiting groove; 602. Rotating shaft hole; 603. Guide groove; 604. Limiting surface; 7. Torsion spring; 8. Handle. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0055] The related art discloses a cleaning device, including a main body component, a handle and a telescopic tube. One end of the telescopic tube is fixedly connected to the main body component, and the second end is fixed in the handle. The telescopic tube has an extended state and a retracted state. When the user needs to clean the bed or a relatively large area, the telescopic tube is pulled open to put the telescopic tube in an extended state. At this time, the user can clean the bed or a relatively large area by standing beside the bed or standing in one position without bending over, and the cleaning is effortless. When the cleaning is completed, the telescopic tube is retracted to put the telescopic tube in a retracted state. The whole machine occupies a small volume and is easy to store. By fixing the second end of the telescopic tube inside the handle, the appearance is beautiful and the volume of the whole machine is not increased.

[0056] In the above-mentioned related art, the first end of the telescopic tube is connected to a first joint, and a second joint is provided in the main assembly, and the first joint is plugged into the second joint. When the telescopic tube is in an extended state, the first joint is suspended in the second joint, and the telescopic tube is a cantilever structure, and the telescopic tube is supported by the first joint. After the telescopic tube is extended, the overall length is relatively long, and when the handle is used to push and pull the main assembly forward and backward, the handle will be subjected to up and down forces, which makes the first joint subject to greater stress and there is a risk of fracture and failure.

[0057] Combine the following Figures 1 to 14 , describing an embodiment of the utility model.

[0058] According to an embodiment of the present utility model, on one hand, a telescopic assembly is provided, including a housing 1 , a telescopic tube 3 and a supporting structure 5 .

[0059] Among them, the telescopic tube 3 is connected to the connecting rod 4. When the telescopic tube 3 is in the extended state, an installation cavity 2 is formed between the connecting rod 4 and the shell. When the telescopic tube 3 is in the retracted state, the telescopic tube 3 is located in the installation cavity. The support structure 5 has a supporting position supported between the connecting rod 4 and the cavity wall of the installation cavity 2. When the telescopic tube 3 is in the extended state, the support structure 5 is in the supporting position.

[0060] In this embodiment, when the telescopic tube 3 is in the extended state, the supporting structure 5 is in the supporting position. The supporting structure 5 is supported between the connecting rod 4 and the cavity wall of the installation cavity 2, supporting the connecting rod 4, increasing the fulcrum points of the connecting rod 4, and reducing the force on the root of the connecting rod 4, thereby avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0061] Specifically in one embodiment, the telescopic tube 3 includes a plurality of tube bodies 301 which are sequentially sleeved, and the inner side of the innermost tube body 301 is connected to the connecting rod 4 .

[0062] Specifically in one embodiment, Figure 8 As shown, a convex column 201 is provided in the installation cavity 2, and a connecting rod 4 is inserted outside the convex column 201, and the end of the connecting rod 4 abuts against the bottom wall of the installation cavity 2, and the end of the connecting rod 4 is its root.

[0063] Specifically in one embodiment, the boss 201 and the connecting rod 4 are connected via screws.

[0064] In one embodiment, the connecting rod 4 and / or the cavity wall of the installation cavity 2 is provided with an installation groove 6, and the support structure 5 also has an avoidance position for retracting the installation groove 6. When the telescopic tube 3 is in a retracted state, the support structure 5 is in the avoidance position. The telescopic assembly also includes a reset member. When the telescopic tube 3 is in an extended state, the reset member resets the support structure 5 from the avoidance position to the supporting position.

[0065] In this embodiment, by providing the mounting groove 6, when the telescopic tube 3 is retracted, the telescopic tube 3 overcomes the restoring force of the restoring member to retract the supporting structure 5 into the mounting groove 6, and the supporting structure 5 will not interfere with the extension and retraction of the telescopic tube 3. When the telescopic tube 3 is in the extended state, the restoring force of the restoring member automatically resets the supporting structure 5 from the avoidance position to the supporting position, thereby supporting the connecting rod 4, increasing the fulcrum points of the connecting rod 4, reducing the force on the root of the connecting rod 4, and avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0066] In an embodiment not shown in the figures, a through hole may be provided in the housing 1 , and when the telescopic tube 3 is in the extended state, the supporting structure 5 is inserted into the through hole and abuts against the connecting rod 4 .

[0067] Specifically in one embodiment, the mounting groove 6 can be only provided on the connecting rod 4, and the number of the mounting grooves 6 can be provided at two or more, and a supporting structure 5 is installed in each mounting groove 6. When the telescopic tube 3 is retracted, the telescopic tube 3 overcomes the restoring force of the restoring member to retract the supporting structure 5 into the mounting groove 6, and the supporting structure 5 will not interfere with the extension and retraction of the telescopic tube 3. When the telescopic tube 3 is in an extended state, the restoring force of the restoring member automatically resets the supporting structure 5 from the avoidance position to the supporting position, thereby supporting the connecting rod 4, increasing the fulcrum of the connecting rod 4, reducing the force on the root of the connecting rod 4, and avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0068] Specifically in one embodiment, only the mounting groove 6 can be set on the cavity wall of the mounting cavity 2, and each mounting groove 6 is installed with a supporting structure 5. The number of mounting grooves 6 can be set to two or more. When the telescopic tube 3 is retracted, the telescopic tube 3 overcomes the restoring force of the restoring member to retract the supporting structure 5 into the mounting groove 6, and the supporting structure 5 will not interfere with the extension and contraction of the telescopic tube 3. When the telescopic tube 3 is in an extended state, the restoring force of the restoring member automatically resets the supporting structure 5 from the avoidance position to the supporting position, supporting the connecting rod 4, increasing the fulcrum of the connecting rod 4, reducing the force on the root of the connecting rod 4, and avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0069] In one embodiment, there are two mounting grooves 6, one of which is located on the cavity wall of the mounting cavity 2, and the other is located on the connecting rod 4, and a supporting structure 5 is installed in each mounting groove 6. When the telescopic tube 3 is retracted, the telescopic tube 3 overcomes the restoring force of the restoring member to retract the supporting structure 5 into the mounting groove 6, and the supporting structure 5 does not interfere with the telescopic movement of the telescopic tube 3. When the telescopic tube 3 is in the extended state, the restoring force of the restoring member automatically resets the supporting structure 5 from the avoidance position to the supporting position, supporting the connecting rod 4, increasing the force points of the connecting rod 4, reducing the force on the root of the connecting rod 4, and avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0070] Specific as Figure 2 , Figure 6 , Figure 7 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, the mounting groove 6 on the connecting rod 4 is arranged on the upper side, and the mounting groove 6 on the cavity wall of the mounting cavity 2 is located on the lower side. The supporting structures 5 in the upper and lower mounting grooves have the same structure and the same mounting method. In this embodiment, the upper supporting structure 5 is located on the inner side of the telescopic tube 3, and the lower supporting structure 5 is located on the outer side of the telescopic tube 3.

[0071] In one embodiment, the support structure 5 is hinged in the mounting groove 6 , and the reset member is a torsion spring 7 , which is disposed between the support structure 5 and the mounting groove 6 .

[0072] In this embodiment, since the support structure 5 is hinged in the installation groove 6, it can rotate in the installation groove 6. The reset member is a torsion spring 7, and the torsion force of the torsion spring 7 can reset the support structure 5 from the avoidance position to the support position.

[0073] Specifically in one embodiment, when the telescopic tube 3 switches from the extended state to the retracted state, under the action of the telescopic tube 3, the two support structures 5 both rotate counterclockwise from the support position to the avoidance position. During the rotation of the support structure 5, the torsion spring 7 generates a torsion force. When the telescopic tube 3 is extended, the torsion force of the torsion spring 7 causes the support structure 5 to rotate clockwise to the support position, supporting the connecting rod 4, increasing the fulcrum of the connecting rod 4, reducing the force on the root of the connecting rod 4, and avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0074] Of course, in an embodiment not shown in the figure, when there are two mounting grooves 6 and they are simultaneously arranged on the connecting rod 4, the two supporting structures 5 installed in the two mounting grooves 6 are symmetrically arranged. When the telescopic tube 3 switches from the extended state to the retracted state, under the action of the telescopic tube 3, one supporting structure 5 rotates counterclockwise and the other supporting structure 5 rotates clockwise, and both supporting structures 5 rotate from the supporting position to the avoidance position. During the rotation of the supporting structure 5, the torsion spring 7 generates torque. When the telescopic tube 3 is extended, one supporting structure 5 rotates clockwise and the other supporting structure 5 rotates counterclockwise, and both supporting structures 5 rotate to the supporting position.

[0075] In another embodiment not shown in the figure, when two mounting grooves 6 are provided and are simultaneously arranged on the cavity wall of the mounting cavity 2, the two support structures 5 installed in the two mounting grooves 6 are symmetrically arranged. When the telescopic tube 3 switches from the extended state to the retracted state, under the action of the telescopic tube 3, one support structure 5 rotates counterclockwise and the other support structure 5 rotates clockwise, and both support structures 5 rotate from the supporting position to the avoidance position. During the rotation of the support structure 5, the torsion spring 7 generates torque. When the telescopic tube 3 is extended, one support structure 5 rotates clockwise and the other support structure 5 rotates counterclockwise, and both support structures 5 rotate to the supporting position.

[0076] In an embodiment not shown in the figure, the reset member can be a compression spring, and the support structure 5 is movably installed in the installation groove 6. The moving direction of the support structure 5 is perpendicular to the axial direction of the telescopic tube 3. When the telescopic tube 3 is in a retracted state, the support structure 5 retracts into the installation groove 6, and the compression spring is compressed. When the telescopic tube 3 is extended, the elastic force of the compression spring resets the support structure 5 to the supporting position.

[0077] In one embodiment, the support structure 5 is provided with an installation shaft 501 and a first limiting groove 509, the torsion spring 7 is sleeved on the installation shaft 501, the first end of the torsion spring 7 is fixed in the first limiting groove 509 or passes through the first limiting groove 509 and then abuts against the support structure 5, and the second end of the torsion spring 7 abuts against the installation groove 6.

[0078] In this embodiment, the torsion spring 7 is sleeved on the mounting shaft 501, the first end of the torsion spring 7 is fixed in the first limiting groove 509 or is abutted against the support structure 5 after passing through the first limiting groove 509, and the second end of the torsion spring 7 is abutted against the mounting groove 6. The setting of the mounting shaft 501 and the first limiting groove 509 facilitates the installation of the torsion spring 7.

[0079] Specifically in one embodiment, the support structure 5 has a first side surface. When the support structure 5 is in the avoidance position, the first side surface faces the bottom wall of the installation groove 6, and the first end of the torsion spring 7 passes through the first limiting groove 509 and abuts against the first side surface.

[0080] Specific as Figure 2 The first end of the torsion spring 7 passes through the first limiting groove 509 and abuts against the first side surface of the support arm 503 .

[0081] Of course, in an embodiment not shown in the figures, the mounting shaft 501 may be disposed in the mounting groove 6 .

[0082] In one embodiment, a second limiting groove 601 is provided in the installation groove 6 , and the second end of the torsion spring 7 is limited in the second limiting groove 601 .

[0083] In this embodiment, the second limiting groove 601 can limit the second end of the torsion spring 7 to ensure that the torsion spring 7 can generate a restoring force.

[0084] In an embodiment not shown in the figures, a fixing hole may be provided in the mounting groove 6, and the other end of the torsion spring 7 may be inserted into the fixing hole.

[0085] In one embodiment, one end of the mounting shaft 501 is fixed, and the other end is suspended.

[0086] In this embodiment, since one end of the mounting shaft 501 is fixed and the other end is suspended, the torsion spring 7 can be easily put on the mounting shaft 501. In addition, the second limiting groove 601 and the first limiting groove 509 cooperate to prevent the torsion spring 7 from moving along the mounting shaft 501 and to prevent the torsion spring 7 from falling off the mounting shaft 501.

[0087] Specifically in one embodiment, the length of the second end of the torsion spring 7 is equal to the width of the second limiting groove 601 .

[0088] In one embodiment, Fig.11and Fig.13 As shown, a first guide surface 506 is provided at the first end of the support structure 5. When the telescopic tube 3 is extended, the tube sleeve 302 of the telescopic tube 3 presses against the first guide surface 506 located inside the telescopic tube 3, so that the support structure 5 rotates to the avoidance position.

[0089] In this embodiment, when the telescopic tube 3 is extended, the tube sleeve 302 of the telescopic tube 3 presses against the first guide surface 506 located on the inner side of the telescopic tube 3, so that the support structure 5 rotates to the avoidance position, which can avoid the extension of the telescopic tube 3 and prevent the telescopic tube 3 from colliding and interfering with the corners on the support structure 5 and causing it to be stuck when extended.

[0090] Specifically, when the tube sleeve 302 of the telescopic tube 3 presses against the first guide surface 506 located on the inner side of the telescopic tube 3 , the supporting structure 5 rotates counterclockwise.

[0091] In one embodiment, the support structure 5 includes a connecting arm 502 and two spaced and oppositely arranged support arms 503 , one end of the support arm 503 is connected to the connecting arm 502 , and one end of the mounting shaft 501 is fixedly disposed on one of the support arms 503 and extends toward the other support arm 503 .

[0092] In this embodiment, one end of the mounting shaft 501 is fixed on one of the support arms 503 and extends toward the other support arm 503, that is, the mounting shaft 501 is located between the two support arms 503. The torsion spring 7 is sleeved on the mounting shaft 501, so that the middle part of the support structure 5 can be stressed, and the structure is more stable.

[0093] Specifically in one embodiment, Figure 4 As shown, one of the support arms 503 is provided with a connecting piece, and the connecting piece is located above the installation shaft 501, and a first limiting groove 509 is formed on the connecting piece.

[0094] In one embodiment, the support structure 5 is provided with a rotating shaft 504 on both sides, the mounting groove 6 is provided with a rotating shaft hole 602 , and the rotating shaft 504 is rotatably disposed in the rotating shaft hole 602 .

[0095] In this embodiment, by arranging the rotating shafts 504 on both sides of the supporting structure 5, the supporting structure 5 can be stably rotated.

[0096] In an embodiment not shown in the figures, the rotating shaft 504 can be arranged in the mounting groove 6 , and the rotating shaft holes 602 can be arranged on both sides of the supporting structure 5 .

[0097] In one embodiment, a groove wall of the installation groove 6 is provided with a guide groove 603 , and the rotating shaft 504 is suitable for sliding along the guide groove 603 into the rotating shaft hole 602 .

[0098] In this embodiment, the provision of the guide groove 603 facilitates the smooth installation of the rotating shaft 504 .

[0099] Specific as Figure 3 As shown, the guide groove 603 extends to the notch of the mounting groove 6 .

[0100] In one embodiment, a second guide surface 505 is disposed at the end of the rotating shaft 504 .

[0101] In this embodiment, by providing a second guide surface 505 at the end of the rotating shaft 504, the end area of ​​the rotating shaft 504 can be reduced, making it easier for the end of the rotating shaft 504 to extend into the guide groove 603, thereby facilitating the installation of the supporting structure 5 into the installation groove 6.

[0102] Specifically in one embodiment, the second guide surface 505 is an inclined surface.

[0103] In one embodiment, a first supporting surface 508 is provided at the first end of the supporting structure 5, and a second supporting surface 507 is provided at the second end of the supporting structure 5. When the supporting structure 5 is in the supporting position, the first supporting surface 508 abuts against the connecting rod 4 or the cavity wall of the mounting cavity 2, and the second supporting surface 507 abuts against the mounting groove 6.

[0104] In this embodiment, when the supporting structure 5 is in the supporting position, the first supporting surface 508 abuts against the wall of the connecting rod 4 or the mounting cavity 2, and the second supporting surface 507 abuts against the mounting groove 6, which can increase the contact area between the supporting structure 5 and the mounting groove 6, as well as the connecting rod 4 or the mounting cavity 2, thereby ensuring the supporting effect and effectively supporting the connecting rod 4.

[0105] In one embodiment, the mounting groove 6 is provided with a limiting surface 604 , and when the supporting structure 5 is in the supporting position, the second supporting surface 507 abuts against the limiting surface 604 .

[0106] In this embodiment, when the support structure 5 is in the supporting position, the second support surface 507 abuts against the limiting surface 604, and the support structure 5 and the mounting groove 6 have a larger contact area. In addition, the limiting surface 604 can also prevent the support structure 5 from continuing to rotate.

[0107] Specifically in one embodiment, the telescopic tube 3 includes a plurality of tube bodies 301 which are sequentially sleeved. Except for the outermost tube body 301, the end of each tube body 301 is provided with an elastic protrusion 303. Except for the innermost tube body 301, the end of each tube body 301 is provided with a locking hole. When the telescopic tube 3 is fully opened, each elastic protrusion 303 is stuck in the locking hole on the adjacent tube body 301.

[0108] It should be noted that Fig.14 Although the telescopic tube 3 is in the extended state, the telescopic tube 3 is not pulled apart.

[0109] Specifically in one embodiment, a sleeve 302 is provided at the inner end of each tube body 301 , and the sleeve 302 can protect each tube body 301 and also have a limiting function to prevent deviation between two adjacent tube bodies 301 when they move.

[0110] According to an embodiment of the present utility model, on the other hand, a cleaning device is provided, comprising: the telescopic assembly provided in the above embodiment.

[0111] In the cleaning device, when the telescopic tube 3 is in the extended state, the supporting structure 5 is in the supporting position. The supporting structure 5 is supported between the connecting rod 4 and the cavity wall of the installation cavity 2, supporting the connecting rod 4, increasing the fulcrum points of the connecting rod 4, reducing the force on the root of the connecting rod 4, and avoiding root fracture due to the large stress on the root when the telescopic tube 3 is extended.

[0112] Specifically in one embodiment, the cleaning device includes a main body component, a handle 8 and a telescopic component, and the main body component includes the above-mentioned shell 1. The main body component also includes a roller brush, a dust suction port, and a fan. The fan generates suction when it runs, and the dust mites beaten by the roller brush are sucked into the dust cup component through the dust suction port.

[0113] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A telescopic assembly, characterized in that: include: Housing (1); A telescopic tube (3) connected to a connecting rod (4); when the telescopic tube (3) is in an extended state, a mounting cavity (2) is formed between the connecting rod (4) and the housing (1); when the telescopic tube (3) is in a retracted state, the telescopic tube (3) is located in the mounting cavity (2); The support structure (5) has a support position supported between the connecting rod (4) and the cavity wall of the installation cavity (2), and when the telescopic tube (3) is in the extended state, the support structure (5) is in the support position.

2. The telescopic assembly according to claim 1, characterized in that: The connecting rod (4) and / or the cavity wall of the installation cavity (2) are provided with an installation groove (6); the support structure (5) also has an avoidance position for retracting the installation groove (6); when the telescopic tube (3) is in the retracted state, the support structure (5) is in the avoidance position; the telescopic assembly also includes a reset member; when the telescopic tube (3) is in the extended state, the reset member resets the support structure (5) from the avoidance position to the support position.

3. The telescopic assembly according to claim 2, characterized in that: The support structure (5) is hinged in the mounting groove (6); the reset element is a torsion spring (7); and the torsion spring (7) is arranged between the support structure (5) and the mounting groove (6).

4. The telescopic assembly according to claim 3, characterized in that: The support structure (5) is provided with a mounting shaft (501) and a first limiting groove (509); the torsion spring (7) is sleeved on the mounting shaft (501); the first end of the torsion spring (7) is fixed in the first limiting groove (509) or passes through the first limiting groove (509) and then abuts against the support structure (5); the second end of the torsion spring (7) abuts against the mounting groove (6).

5. The telescopic assembly according to claim 4, characterized in that: A second limiting groove (601) is provided in the installation groove (6), and the second end of the torsion spring (7) is limited in the second limiting groove (601).

6. The telescopic assembly according to claim 5, characterized in that: One end of the installation shaft (501) is fixed, and the other end is suspended.

7. The telescopic assembly according to any one of claims 2 to 6, characterized in that: A first guide surface (506) is provided at the first end of the support structure (5); when the telescopic tube (3) is extended, the tube sleeve (302) of the telescopic tube (3) presses against the first guide surface (506) located on the inner side of the telescopic tube (3), so that the support structure (5) rotates toward the avoidance position.

8. The telescopic assembly according to any one of claims 4 to 6, characterized in that: The support structure (5) comprises a connecting arm (502) and two support arms (503) spaced apart and arranged opposite to each other, one end of the support arm (503) is connected to the connecting arm (502), and one end of the mounting shaft (501) is fixedly arranged on one of the support arms (503) and extends toward the other support arm (503).

9. The telescopic assembly according to any one of claims 3 to 6, characterized in that: Rotating shafts (504) are provided on both sides of the support structure (5), and the mounting groove (6) is provided with rotating shaft holes (602), and the rotating shaft (504) is rotatably arranged in the rotating shaft holes (602).

10. The telescopic assembly according to claim 9, characterized in that: The groove wall of the installation groove (6) is provided with a guide groove (603), and the rotating shaft (504) is suitable for sliding along the guide groove (603) into the rotating shaft hole (602); A second guide surface (505) is provided at the end of the rotating shaft (504).

11. The telescopic assembly according to any one of claims 2 to 6, characterized in that: The first end of the support structure (5) is provided with a first support surface (508), and the second end of the support structure (5) is provided with a second support surface (507). When the support structure (5) is in the support position, the first support surface (508) abuts against the connecting rod (4) or the cavity wall of the installation cavity (2), and the second support surface (507) abuts against the installation groove (6).

12. The telescopic assembly according to claim 11, characterized in that: The mounting groove (6) is provided with a limiting surface (604), and when the supporting structure (5) is in the supporting position, the second supporting surface (507) abuts against the limiting surface (604).

13. A cleaning device, characterized in that: include: The telescopic assembly according to any one of claims 1 to 12.

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