Joint assembly and device having the same

Abstract

The utility model relates to the technical field of cleaning equipment, and discloses a joint assembly and a device with the joint assembly, the joint assembly is suitable for being connected between a main body and a telescopic rod, and the joint assembly comprises a front support arm suitable for being fixedly arranged in the main body; the rear supporting arm is hinged to the front supporting arm, and the rear supporting arm is suitable for being connected with the telescopic rod; the damping ejector rod is arranged in the front supporting arm, and when the rear supporting arm rotates relative to the front supporting arm, the damping ejector rod keeps abutting against the rear supporting arm. The rear supporting arm is hinged to the front supporting arm, so that the rear supporting arm can rotate relative to the front supporting arm, the damping ejector rod is arranged on the front supporting arm, and when the rear supporting arm rotates relative to the front supporting arm, the damping ejector rod keeps abutting against the rear supporting arm to provide damping force, so that the rear supporting arm can be kept at the rotated position, and a user can conveniently use the rear supporting arm. When the joint assembly is connected between the body and the telescopic rod, the telescopic rod can rotate relative to the body, a user does not need to bend down all the time, and use is more convenient for the user.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a joint component and a device with the joint component. 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. The first 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 a 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 the relatively large area by standing beside the bed or standing in one position. 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.

[0004] In the above-mentioned related technology, when cleaning the bed, the telescopic tube is extended horizontally, and the user still needs to bend over to ensure that the main component is close to the bed surface. Utility Model Content

[0005] In view of this, the utility model provides a joint assembly and a device having the joint assembly to solve the problem that the user needs to bend over to use the joint assembly.

[0006] In a first aspect, the utility model provides a joint assembly, which is suitable for connecting between a main body and a telescopic rod, comprising:

[0007] A front support arm, adapted to be fixedly disposed in the main body;

[0008] A rear support arm, hinged to the front support arm, the rear support arm being suitable for being connected to the telescopic rod;

[0009] A damping push rod is arranged in the front support arm. When the rear support arm rotates relative to the front support arm, the damping push rod remains against the rear support arm.

[0010] Beneficial effects: The rear arm is hinged to the front arm, so the rear arm can rotate relative to the front arm. Since the front arm is provided with a damping top rod, when the rear arm rotates relative to the front arm, the damping top rod remains against the rear arm to provide a damping force, so that the rear arm can be kept in the position after rotation, which is convenient for users to use. When the joint assembly is connected between the main body and the telescopic rod, the telescopic rod can be rotated relative to the main body without the user having to bend over all the time, which is more convenient for users to use.

[0011] In an optional embodiment, the damping push rod is movably disposed in the front support arm, and an elastic member is provided between the damping push rod and the front support arm, and the elastic force of the elastic member keeps one end of the damping push rod against the rear support arm.

[0012] Beneficial effect: an elastic member is provided between the damping push rod and the front support arm, and the elastic force of the elastic member keeps one end of the damping push rod against the rear support arm, providing a damping force, thereby keeping the rear support arm in the position after rotation, which is convenient for users to use.

[0013] In an optional embodiment, a damping push rod mounting hole is provided in the front support arm, and an abutment surface is provided on the outer side of the end of the damping push rod mounting hole. The damping push rod includes a rod body and an abutment joint provided at the end of the rod body. The rod body passes through the damping push rod mounting hole, one end of the elastic member abuts against the abutment surface, and the other end abuts against the abutment joint, and the abutment joint abuts against the rear support arm.

[0014] Beneficial effects: The damping push rod mounting hole can be used to position and install the damping push rod. The damping push rod includes a rod body and an abutment joint arranged at the end of the rod body. The abutment joint has a large end surface area. The setting of the abutment joint can ensure the abutment with the rear support arm on the one hand, and facilitate the installation of the elastic part on the other hand.

[0015] In an optional embodiment, a supporting boss is provided at one end of the rear support arm facing the front support arm, the supporting boss has a first curved surface, a second curved surface matching the first curved surface is provided inside the front support arm, and one end of the damping push rod is against the supporting boss.

[0016] Beneficial effect: By setting a first arc surface on the supporting boss, a second arc surface matching the first arc surface is provided inside the front arm. When the rear arm rotates relative to the front arm, the first arc surface rotates relative to the second arc surface, and the supporting boss will not interfere with the front arm.

[0017] In an optional embodiment, the front support arm cooperates with the rod body via a first limiting structure, and the first limiting structure is used to prevent the rod body from rotating relative to the damping top rod mounting hole.

[0018] Beneficial effect: The setting of the first limiting structure can prevent the rod body from rotating relative to the damping push rod mounting hole, thereby preventing the rod body from being separated from the rear support arm due to rotation.

[0019] In an optional embodiment, the first limiting structure includes a first limiting plane arranged outside the rod body and a second limiting plane arranged in the damping top rod mounting hole, and the first limiting plane cooperates with the second limiting plane.

[0020] Beneficial effect: The first limiting plane cooperates with the second limiting plane to prevent the rod body from rotating relative to the damping push rod mounting hole, thereby preventing the rod body from being separated from the rear support arm due to rotation.

[0021] In an optional embodiment, the abutment head is provided with one of a positioning rod and a positioning hole, the front support arm is provided with the other of a positioning rod and a positioning hole, and the positioning rod is suitable for being inserted into the positioning hole.

[0022] Beneficial effect: During assembly, the positioning rod can be inserted into the positioning hole to position the assembly of the damping push rod and the front support arm.

[0023] In an optional embodiment, the front support arm is protrudingly provided with a first articulated arm, the rear support arm is protrudingly provided with a second articulated arm, and the first articulated arm and the second articulated arm are hingedly connected via a hinge shaft.

[0024] Beneficial effects: the front support arm is protrudingly provided with a first hinged arm, and the rear support arm is protrudingly provided with a second hinged arm, which facilitates the hinge connection between the first hinged arm and the second hinged arm, and also facilitates the rotation of the rear support arm relative to the front support arm.

[0025] In an optional embodiment, the first articulated arm is provided with a first articulated shaft mounting hole, the second articulated arm is provided with a second articulated shaft mounting hole, the articulated shaft is clearance-fitted with one of the first articulated shaft mounting hole and the second articulated shaft mounting hole, and is interference-fitted with the other of the first articulated shaft mounting hole and the second articulated shaft mounting hole.

[0026] Beneficial effects: The articulated shaft has a clearance fit with one of the first articulated shaft mounting hole and the second articulated shaft mounting hole, and an interference fit with the other of the first articulated shaft mounting hole and the second articulated shaft mounting hole, which facilitates the smooth installation of the articulated shaft, is not easy to fall off, and can ensure that the rear support arm can rotate relative to the front support arm.

[0027] In an optional embodiment, two second articulated arms are symmetrically arranged, and the first articulated arm is located between the two second articulated arms.

[0028] Beneficial effect: two second articulated arms are symmetrically arranged, and the first articulated arm is located between the two second articulated arms, so that the rear support arm can be evenly stressed and the articulated shaft is not easy to fall off.

[0029] In an optional embodiment, the front support arm is provided with a first rotation limit surface, and the rear support arm is provided with a second rotation limit surface, and when the second rotation limit surface abuts against the first rotation limit surface, the first rotation limit surface prevents the rear support arm from continuing to rotate.

[0030] Beneficial effect: When the second rotation limit surface abuts against the first rotation limit surface, the first rotation limit surface prevents the rear support arm from continuing to rotate. The setting of the first rotation limit surface and the second rotation limit surface can limit the rotation angle of the rear support arm, which is more convenient for users to use and can prevent the damping push rod from being separated from the abutment with the rear support arm.

[0031] In an optional embodiment, when the second rotation limiting surface abuts against the first rotation limiting surface, the angle between the axis of the rear support arm and the axis of the front support arm is C, and C is less than 90°.

[0032] Beneficial effect: When the second rotation limit surface abuts the first rotation limit surface, the angle between the axis of the rear support arm and the axis of the front support arm is less than 90°, which can meet the actual use needs of the user, and the user does not need to bend over to operate.

[0033] In an optional embodiment, the front support arm is provided with a wire passing hole.

[0034] Beneficial effect: Since electric wires are connected between the main body and the handle, the provision of the wire holes facilitates the arrangement of the electric wires.

[0035] In a second aspect, the utility model also provides a device with a joint assembly, comprising a main body, a handle, a telescopic rod, and the joint assembly connected between the main body and the telescopic rod, wherein the front arm is fixedly connected to the main body, and the rear arm is connected to the telescopic rod.

[0036] Beneficial effects: the front arm is fixedly connected to the main body, the rear arm is connected to the telescopic rod, the rear arm is hinged to the front arm, the rear arm can rotate relative to the front arm, and thus the telescopic rod can rotate relative to the main body. Since the front arm is provided with a damping top rod, when the rear arm rotates relative to the front arm, the damping top rod remains against the rear arm to provide a damping force, thereby keeping the rear arm in the rotated position, which is convenient for users to use. When the user holds the handle to operate, the user does not need to bend over all the time, which can enhance the user experience.

[0037] In an optional embodiment, the telescopic rod includes a multi-stage tube body that is sequentially sleeved, and the innermost tube body is sleeved outside the rear support arm. The telescopic rod has a retracted state and an extended state. When the telescopic rod is in the retracted state, the telescopic rod surrounds the outside of the joint assembly.

[0038] Beneficial effect: When the telescopic rod is in a retracted state, the telescopic rod surrounds the outside of the joint assembly, and at least part of the telescopic rod is located inside the main body. The entire device occupies a small volume, which is convenient for users to store.

[0039] In an optional embodiment, a first step portion is formed on the outer surface of the rear support arm, and a clamping ring is provided inside the innermost tube body, and when the clamping ring abuts against the first step portion, the innermost tube body is prevented from further extending.

[0040] Beneficial effect: The clamping ring cooperates with the first step portion to prevent the joint assembly from being separated from the innermost tube body.

[0041] In an optional embodiment, the device having the joint assembly is a cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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.

[0043] Figure 1 This is a schematic structural diagram of a joint assembly according to an embodiment of the utility model when the rear support arm rotates to the maximum angle relative to the front support arm;

[0044] Figure 2 for Figure 1 a cross-sectional view of the joint assembly shown;

[0045] Figure 3 An exploded view of a joint assembly according to an embodiment of the utility model;

[0046] Figure 4 for Figure 3 a cross-sectional view of the joint assembly shown;

[0047] Figure 5 It is a cross-sectional view of a joint assembly of an embodiment of the utility model when the rear support arm is not rotated;

[0048] Figure 6 for Figure 1 A schematic diagram of the structure of the middle front support arm at a viewing angle;

[0049] Figure 7 for Figure 1 A schematic diagram of the structure of the middle front support arm at another viewing angle;

[0050] Figure 8 for Figure 1 Schematic diagram of the structure of the middle and rear support arm;

[0051] Fig. 9 This is a schematic structural diagram of a device with a joint assembly according to an embodiment of the utility model when the rear support arm rotates to a maximum angle relative to the front support arm;

[0052] Fig.10 for Fig. 9 a cross-sectional view of the device with the joint assembly shown;

[0053] Fig.11 for Fig.10 The enlarged view of point A in the middle;

[0054] Fig.12 It is a cross-sectional view of a device with a joint assembly according to an embodiment of the utility model when the rear support arm is not rotated and the telescopic rod is in an extended state;

[0055] Fig.13 for Fig.12 The enlarged view of point B in the middle;

[0056] Fig.14 A cross-sectional view of a device with a joint assembly according to an embodiment of the utility model when the telescopic rod is in a retracted state;

[0057] Fig.15 A schematic structural diagram of a device with a joint assembly provided for a user to use an embodiment of the utility model on a bed.

[0058] Description of reference numerals:

[0059] 1. Front support arm; 101. Damping push rod mounting hole; 1011. Second limiting plane; 102. Abutment surface; 103. Second arc surface; 104. First hinged arm; 1041. First hinge shaft mounting hole; 105. First rotation limiting surface; 106. Passing hole; 107. Positioning hole; 2. Rear support arm; 201. Support boss; 2011. First arc surface; 202. Second hinged arm; 2021. Second hinge shaft mounting hole; 203. Second rotation limiting surface; 204. First step; 3. Damping push rod; 301. Rod body; 302. Abutment head; 303. First limiting plane; 304. Positioning rod; 4. Elastic member; 5. Hinge shaft; 6. Main body; 7. Handle; 8. Telescopic rod; 801. Snap ring. DETAILED DESCRIPTION

[0060] 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.

[0061] The related art discloses a cleaning device, including a main body component, a handle, and a telescopic tube. The first 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 a 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 the relatively large area by standing beside the bed or standing in one position. 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.

[0062] In the above-mentioned related technology, when cleaning the bed, the telescopic tube is extended horizontally, and the user still needs to bend over to ensure that the main component is close to the bed surface.

[0063] Combine the following Figures 1 to 15 , describing an embodiment of the utility model.

[0064] According to an embodiment of the utility model, a joint assembly is provided, which is suitable for being connected between a main body 6 and a telescopic rod 8 , and the joint assembly includes a front support arm 1 , a rear support arm 2 and a damping top rod 3 .

[0065] Among them, the front arm 1 is suitable for being fixedly arranged in the main body 6; the rear arm 2 is hinged to the front arm 1, and the rear arm 2 is suitable for being connected to the telescopic rod 8; the damping top rod 3 is arranged in the front arm 1, and when the rear arm 2 rotates relative to the front arm 1, the damping top rod 3 remains against the rear arm 2.

[0066] In this embodiment, the rear arm 2 is hinged to the front arm 1, so the rear arm 2 can rotate relative to the front arm 1. Since the front arm 1 is provided with a damping top rod 3, when the rear arm 2 rotates relative to the front arm 1, the damping top rod 3 remains against the rear arm 2 to provide a damping force, so that the rear arm 2 can be kept in the position after rotation, which is convenient for users to use. When the joint assembly is connected between the main body 6 and the telescopic rod 8, the telescopic rod 8 can be rotated relative to the main body 6, without the user having to bend over all the time, which is more convenient for users to use.

[0067] In one embodiment, the damping push rod 3 is movably disposed in the front support arm 1 , and an elastic member 4 is disposed between the damping push rod 3 and the front support arm 1 , and the elastic force of the elastic member 4 keeps one end of the damping push rod 3 against the rear support arm 2 .

[0068] In this embodiment, if Figure 2 and Figure 5 As shown, an elastic member 4 is provided between the damping top rod 3 and the front arm 1. The elastic force of the elastic member 4 keeps one end of the damping top rod 3 against the rear arm 2, providing a damping force, thereby keeping the rear arm 2 in the rotated position for user convenience.

[0069] In an embodiment not shown in the figure, the damping top rod 3 itself may include two separate rods, for example, a first rod and a second rod, one end of the first rod is fixedly arranged in the front support arm 1, and an elastic member 4 is arranged between the other end of the first rod and the second rod, and the second rod is maintained against the rear support arm 2.

[0070] In one embodiment, Figure 5 and Figure 6 As shown, a damping push rod mounting hole 101 is provided in the front support arm 1, and a contact surface 102 is provided on the outer side of the end of the damping push rod mounting hole 101. The damping push rod 3 includes a rod body 301 and a contact joint 302 provided at the end of the rod body 301. The rod body 301 passes through the damping push rod mounting hole 101, one end of the elastic member 4 is abutted against the contact surface 102, and the other end is abutted against the abutment joint 302, and the abutment joint 302 is abutted against the rear support arm 2.

[0071] In this embodiment, the damping push rod mounting hole 101 can be used to position and install the damping push rod 3. The damping push rod 3 includes a rod body 301 and a butt joint 302 arranged at the end of the rod body 301. The butt joint 302 has a large end surface area. The setting of the butt joint 302 can ensure that it is abutted against the rear support arm 2 on the one hand, and facilitate the installation of the elastic member 4 on the other hand.

[0072] Specifically in one embodiment, the elastic member 4 is always in a compressed state, so it can always generate elastic force, and the elastic force drives the damping top rod 3 to move toward the rear support arm 2, thereby ensuring that the damping top rod 3 is in contact with the rear support arm 2, and the user can feel the damping force during the process of rotating the rear support arm 2.

[0073] Specifically in one embodiment, the end surface area of ​​the abutment head 302 is larger than the cross-sectional area of ​​the rod body 301 .

[0074] In one embodiment, the front support arm 1 cooperates with the rod body 301 through a first limiting structure, and the first limiting structure is used to prevent the rod body 301 from rotating relative to the damping top rod installation hole 101.

[0075] In this embodiment, the first limiting structure can prevent the rod body 301 from rotating relative to the damping push rod mounting hole 101, thereby preventing the rod body 301 from being separated from the rear support arm 2 due to rotation.

[0076] Specifically in one embodiment, the first limiting structure includes a first limiting plane 303 disposed outside the rod body 301 and a second limiting plane 1011 disposed in the damping top rod mounting hole 101 , and the first limiting plane 303 cooperates with the second limiting plane 1011 .

[0077] In this embodiment, the first limiting plane 303 cooperates with the second limiting plane 1011 to prevent the rod body 301 from rotating relative to the damping push rod installation hole 101, thereby preventing the rod body 301 from being separated from the rear support arm 2 due to rotation.

[0078] In an embodiment not shown in the figure, the first limiting structure may include a groove arranged outside the rod body 301 and a convex strip arranged in the damping top rod mounting hole 101, and the convex strip is embedded in the groove.

[0079] In one embodiment, the abutment head 302 is provided with one of the positioning rod 304 and the positioning hole 107 , and the front arm 1 is provided with the other of the positioning rod 304 and the positioning hole 107 , and the positioning rod 304 is suitable for being inserted into the positioning hole 107 .

[0080] In this embodiment, during assembly, the positioning rod 304 can be inserted into the positioning hole 107 to position the assembly of the damping top rod 3 and the front support arm 1 .

[0081] In one embodiment, a support boss 201 is provided at one end of the rear arm 2 facing the front arm 1, and the support boss 201 has a first curved surface 2011. A second curved surface 103 matching the first curved surface 2011 is provided inside the front arm 1, and one end of the damping top rod 3 is against the support boss 201.

[0082] In this embodiment, the support boss 201 is provided with a first curved surface 2011, and a second curved surface 103 matched with the first curved surface 2011 is provided inside the front arm 1. When the rear arm 2 rotates relative to the front arm 1, the first curved surface 2011 rotates relative to the second curved surface 103, and the support boss 201 will not interfere with the front arm 1.

[0083] In one embodiment, Figures 6 to 8 The front support arm 1 is provided with a first articulated arm 104 , and the rear support arm 2 is provided with a second articulated arm 202 . The first articulated arm 104 and the second articulated arm 202 are hingedly connected via a hinge shaft 5 .

[0084] In this embodiment, the front arm 1 is protrudingly provided with a first articulated arm 104 , and the rear arm 2 is protrudingly provided with a second articulated arm 202 , so as to facilitate the articulation between the first articulated arm 104 and the second articulated arm 202 , and to facilitate the rotation of the rear arm 2 relative to the front arm 1 .

[0085] In an embodiment not shown in the figure, shaft holes can be provided on two opposite side walls of the front support arm 1, and the rear support arm 2 is connected to the hinge shaft 5, and the hinge shaft 5 is rotatably installed in the shaft holes.

[0086] In one embodiment, the first articulated arm 104 is provided with a first articulated shaft mounting hole 1041, and the second articulated arm 202 is provided with a second articulated shaft mounting hole 2021, and the articulated shaft 5 is clearance-fitted with one of the first articulated shaft mounting hole 1041 and the second articulated shaft mounting hole 2021, and is interference-fitted with the other of the first articulated shaft mounting hole 1041 and the second articulated shaft mounting hole 2021.

[0087] In this embodiment, the articulated shaft 5 has a clearance fit with one of the first articulated shaft mounting hole 1041 and the second articulated shaft mounting hole 2021, and has an interference fit with the other of the first articulated shaft mounting hole 1041 and the second articulated shaft mounting hole 2021, which facilitates the smooth installation of the articulated shaft 5, prevents it from falling off, and ensures that the rear support arm 2 can rotate relative to the front support arm 1.

[0088] In one embodiment, Figure 8 As shown, two second articulated arms 202 are symmetrically arranged, and the first articulated arm 104 is located between the two second articulated arms 202 .

[0089] In this embodiment, two second articulated arms 202 are symmetrically arranged, and the first articulated arm 104 is located between the two second articulated arms 202, so that the rear support arm 2 can be evenly stressed and the articulated shaft 5 can be ensured not to fall off easily.

[0090] Specifically in one embodiment, the articulated shaft 5 has an interference fit with the second articulated shaft mounting hole 2021 on the two second articulated arms 202, and has a clearance fit with the first articulated shaft mounting hole 1041 on the first articulated arm 104. When the rear support arm 2 rotates, it drives the articulated shaft 5 to rotate in the first articulated shaft mounting hole 1041.

[0091] In one embodiment, the front arm 1 is provided with a first rotation limit surface 105, and the rear arm 2 is provided with a second rotation limit surface 203. When the second rotation limit surface 203 abuts against the first rotation limit surface 105, the first rotation limit surface 105 prevents the rear arm 2 from continuing to rotate.

[0092] In this embodiment, when the second rotation limit surface 203 abuts against the first rotation limit surface 105, the first rotation limit surface 105 prevents the rear support arm 2 from continuing to rotate. The setting of the first rotation limit surface 105 and the second rotation limit surface 203 can limit the rotation angle of the rear support arm 2, which is more convenient for users to use and can prevent the damping top rod 3 from being separated from the abutment with the rear support arm 2.

[0093] In one embodiment, when the second rotation limiting surface 203 abuts against the first rotation limiting surface 105 , the angle between the axis of the rear support arm 2 and the axis of the front support arm 1 is C, and C is less than 90°.

[0094] In this embodiment, when the second rotation limit surface 203 abuts the first rotation limit surface 105, the angle between the axis of the rear support arm 2 and the axis of the front support arm 1 is less than 90°, which can meet the actual usage needs of the user without the user having to bend over to operate.

[0095] Specifically in one embodiment, when the second rotation limit surface 203 abuts the first rotation limit surface 105, the angle between the axis of the rear support arm 2 and the axis of the front support arm 1 is equal to 50°, that is, the rotation angle of the rear support arm 2 relative to the front support arm 1 is 0-50°.

[0096] In one embodiment, Figure 6 As shown, the front support arm 1 is provided with a wire hole 106 .

[0097] In this embodiment, since electric wires are connected between the main body 6 and the handle 7, the provision of the wire hole 106 facilitates the arrangement of the electric wires.

[0098] According to an embodiment of the utility model, on the other hand, a device with a joint assembly is also provided, including a main body 6, a handle 7, a telescopic rod 8, and a joint assembly connected between the main body 6 and the telescopic rod 8 as provided in the above embodiment, the front arm 1 is fixedly connected to the main body 6, and the rear arm 2 is connected to the telescopic rod 8.

[0099] In this embodiment, the front arm 1 is fixedly connected to the main body 6, the rear arm 2 is connected to the telescopic rod 8, the rear arm 2 is hinged to the front arm 1, the rear arm 2 can rotate relative to the front arm 1, and thus the telescopic rod 8 can rotate relative to the main body 6. Since the front arm 1 is provided with a damping top rod 3, when the rear arm 2 rotates relative to the front arm 1, the damping top rod 3 remains against the rear arm 2 to provide a damping force, thereby keeping the rear arm 2 in the rotated position, which is convenient for users to use. When the user holds the handle 7 for operation, the user does not need to bend over all the time, which can enhance the user experience.

[0100] like Fig.15 As shown, when the user uses the device with the joint assembly on the bed, the user stands at the edge of the bed without the need for the user to bend over all the time.

[0101] Specifically in one embodiment, Fig.11 and Fig.14 As shown, the front arm 1 is fixed in the main body 6 by screws.

[0102] It should be noted that the main body 6 is the main structure for realizing the functions of the device with a telescopic tube, and the handle 7 is used for the user to hold to operate the device with a telescopic tube.

[0103] In one embodiment, Fig.14 As shown, the telescopic rod 8 includes a multi-stage tube body that is sequentially sleeved, and the innermost tube body is sleeved outside the rear support arm 2. The telescopic rod 8 has a retracted state and an extended state. When the telescopic rod 8 is in the retracted state, the telescopic rod 8 surrounds the outside of the joint assembly.

[0104] In this embodiment, when the telescopic rod 8 is in the retracted state, the telescopic rod 8 surrounds the joint assembly, and at least a portion of the telescopic rod 8 is located inside the main body 6. The entire device occupies a small volume, making it easy for the user to store it.

[0105] Specifically in one embodiment, Fig.14 As shown, the front arm 1 is fixedly arranged in the main body 6, and an installation space is formed between the outer wall of the front arm 1 and the main body 6. When the telescopic rod 8 is in a retracted state, the telescopic rod 8 is located in the installation space.

[0106] Specifically, when the telescopic rod 8 is in the retracted state, the front arm 1 and the rear arm 2 are both located inside the main body 6, the multi-stage tube body of the telescopic rod 8 is both located outside the front arm 1, and the telescopic rod 8 extends to the innermost part of the installation space, that is, the front arm 1 and the rear arm 2 are embedded in the telescopic rod.

[0107] In one embodiment, Fig.11 and Fig.13 As shown, a first step portion 204 is formed on the outer surface of the rear support arm 2, and a clamping ring 801 is provided inside the innermost tube body. When the clamping ring 801 abuts against the first step portion 204, the innermost tube body is prevented from further extending.

[0108] In this embodiment, the clamping ring 801 cooperates with the first step portion 204 to prevent the joint assembly from being separated from the innermost tube body.

[0109] In one embodiment, the device having the articulation assembly is a cleaning device.

[0110] The cleaning device may be a mite remover or a vacuum cleaner.

[0111] The main body 6 generally includes a roller brush, a dust suction port, and a fan. The operation of the fan generates suction, and the dust mites beaten up by the roller brush are sucked into the dust cup assembly.

[0112] 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 joint assembly, suitable for connecting between a main body (6) and a telescopic rod (8), characterized in that: include: A front support arm (1) adapted to be fixedly arranged in the main body (6); A rear support arm (2) is hinged to the front support arm (1), and the rear support arm (2) is suitable for being connected to the telescopic rod (8); A damping push rod (3) is arranged in the front support arm (1); when the rear support arm (2) rotates relative to the front support arm (1), the damping push rod (3) remains in contact with the rear support arm (2).

2. The joint assembly according to claim 1, characterized in that: The damping push rod (3) is movably arranged in the front support arm (1), and an elastic member (4) is arranged between the damping push rod (3) and the front support arm (1). The elastic force of the elastic member (4) enables one end of the damping push rod (3) to maintain contact with the rear support arm (2).

3. The joint assembly according to claim 2, characterized in that: A damping push rod mounting hole (101) is provided in the front support arm (1), and an abutment surface (102) is provided on the outer side of the end of the damping push rod mounting hole (101). The damping push rod (3) comprises a rod body (301) and an abutment joint (302) provided at the end of the rod body (301). The rod body (301) passes through the damping push rod mounting hole (101), one end of the elastic member (4) abuts against the abutment surface (102), and the other end abuts against the abutment joint (302), and the abutment joint (302) abuts against the rear support arm (2).

4. The joint assembly according to claim 3, characterized in that: The front support arm (1) cooperates with the rod body (301) via a first limiting structure, and the first limiting structure is used to prevent the rod body (301) from rotating relative to the damping top rod mounting hole (101).

5. The joint assembly according to claim 4, characterized in that: The first limiting structure comprises a first limiting plane (303) arranged outside the rod body (301) and a second limiting plane (1011) arranged inside the damping top rod mounting hole (101), and the first limiting plane (303) cooperates with the second limiting plane (1011).

6. The joint assembly according to claim 3, characterized in that: The abutment head (302) is provided with one of a positioning rod (304) and a positioning hole (107), and the front support arm (1) is provided with the other of the positioning rod (304) and the positioning hole (107), and the positioning rod (304) is suitable for being inserted into the positioning hole (107).

7. The joint assembly according to any one of claims 1 to 6, characterized in that: A supporting boss (201) is provided at one end of the rear supporting arm (2) facing the front supporting arm (1); the supporting boss (201) has a first curved surface (2011); a second curved surface (103) matching the first curved surface (2011) is provided inside the front supporting arm (1); and one end of the damping push rod (3) abuts against the supporting boss (201).

8. The joint assembly according to any one of claims 1 to 6, characterized in that: The front support arm (1) is provided with a first articulated arm (104) protruding therefrom, and the rear support arm (2) is provided with a second articulated arm (202) protruding therefrom. The first articulated arm (104) and the second articulated arm (202) are hingedly connected via a hinge shaft (5).

9. The joint assembly according to claim 8, characterized in that: The first articulated arm (104) is provided with a first articulated shaft mounting hole (1041), the second articulated arm (202) is provided with a second articulated shaft mounting hole (2021), the articulated shaft (5) is clearance-fitted with one of the first articulated shaft mounting hole (1041) and the second articulated shaft mounting hole (2021), and is interference-fitted with the other of the first articulated shaft mounting hole (1041) and the second articulated shaft mounting hole (2021).

10. The joint assembly according to claim 8, characterized in that: Two second articulated arms (202) are symmetrically arranged, and the first articulated arm (104) is located between the two second articulated arms (202).

11. The joint assembly according to any one of claims 1 to 6, 9 and 10, characterized in that: The front support arm (1) is provided with a first rotation limiting surface (105), and the rear support arm (2) is provided with a second rotation limiting surface (203); when the second rotation limiting surface (203) abuts against the first rotation limiting surface (105), the first rotation limiting surface (105) prevents the rear support arm (2) from continuing to rotate.

12. The joint assembly according to claim 11, characterized in that When the second rotation limiting surface (203) abuts against the first rotation limiting surface (105), the angle between the axis of the rear support arm (2) and the axis of the front support arm (1) is C, and C is less than 90°.

13. The joint assembly according to any one of claims 1 to 6, 9, 10 and 12, characterized in that: The front support arm (1) is provided with a wire passing hole (106).

14. A device having a joint assembly, characterized in that: The invention comprises a main body (6), a handle (7), a telescopic rod (8), and a joint assembly as claimed in any one of claims 1 to 13 connected between the main body (6) and the telescopic rod (8), wherein the front arm (1) is fixedly connected to the main body (6), and the rear arm (2) is connected to the telescopic rod (8).

15. The device having a joint assembly according to claim 14, characterized in that: The telescopic rod (8) comprises a plurality of tube bodies which are sleeved in sequence, wherein the innermost tube body is sleeved outside the rear support arm (2), and the telescopic rod (8) has a retracted state and an extended state. When the telescopic rod (8) is in the retracted state, the telescopic rod (8) surrounds the outside of the joint assembly.

16. The device having a joint assembly according to claim 14, characterized in that: A first step portion (204) is formed on the outer surface of the rear support arm (2), and a clamping ring (801) is provided inside the innermost tube body. When the clamping ring (801) abuts against the first step portion (204), the innermost tube body is prevented from further extending.

17. The device having a joint assembly according to any one of claims 14 to 16, characterized in that: The device with the joint assembly is a cleaning device.

Images