Conductive telescopic pipe and handheld dust collector

Abstract

The conductive telescopic pipe comprises a telescopic inner pipe, a telescopic outer pipe and a locking assembly, a rack is arranged on the surface of the telescopic inner pipe in the axial direction, the locking assembly is installed at one end of the telescopic outer pipe, and the locking assembly comprises an outer fixing sleeve, a button sleeve, a positioning piece and an inner fixing sleeve. The outer fixing sleeve is arranged on the periphery of the inner fixing sleeve in a sleeving mode, the button sleeve is elastically arranged between the inner fixing sleeve and the outer fixing sleeve in a sleeving mode, at least two positioning pieces are arranged between the button sleeve and the inner fixing sleeve, and the button sleeve moves between a locking position and an unlocking position relative to the inner fixing sleeve in the radial direction; at the locking position, the button sleeve pushes the positioning piece to penetrate through the inner fixing sleeve and be clamped into the rack; and at the unlocking position, the positioning piece is separated from the rack. The utility model provides the conductive telescopic tube, the locking assembly formed by matching the plurality of positioning pieces and the racks is adopted, and each positioning piece corresponds to one locking position, so that a locking device of the conductive telescopic tube has more reliable performance, and a user is not disturbed by shaking when using a dust collector.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaner accessories, and more specifically to a conductive telescopic tube and a handheld vacuum cleaner. Background Art

[0002] The conductive telescopic tube of a vacuum cleaner is one of the important parts of the vacuum cleaner. It is used to connect the vacuum cleaner main unit and the vacuum head and transmit electrical signals and vacuum airflow. The conductive telescopic tube is usually composed of a telescopic inner tube and a telescopic outer tube. The telescopic inner tube can be freely extended to adapt to different use heights. In order to fix the position of the telescopic inner tube, a locking device is usually set between the telescopic inner tube and the telescopic outer tube.

[0003] The existing locking device usually has only one locking position, that is, the locking position is stuck in the rack on the outer surface of the telescopic inner tube. Although this design is simple and easy to implement, since there is only one locking position, the locking force is limited, and it is easy to shake after long-term use, affecting the use effect. Summary of the invention

[0004] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model proposes a conductive telescopic tube, which adopts a locking assembly composed of multiple positioning pieces and a rack, each positioning piece corresponds to a locking position, so that the conductive telescopic tube locking device has more reliable performance, and the user is no longer troubled by shaking when using the vacuum cleaner, which improves the use effect and user experience.

[0005] The utility model also provides a handheld vacuum cleaner having the conductive telescopic tube.

[0006] The technical solution adopted by the utility model is: to provide a conductive telescopic tube, comprising a telescopic inner tube, a telescopic outer tube and a locking assembly, wherein a rack is axially arranged on the surface of the telescopic inner tube, the locking assembly is installed at one end of the telescopic outer tube, and the locking assembly comprises an outer fixing sleeve, a button sleeve, a positioning piece and an inner fixing sleeve, wherein the outer fixing sleeve is arranged on the outer periphery of the inner fixing sleeve, the button sleeve is elastically arranged between the inner fixing sleeve and the outer fixing sleeve, at least two positioning pieces are arranged between the button sleeve and the inner fixing sleeve, and the button sleeve moves between a locking position and an unlocking position relative to the inner fixing sleeve in the radial direction;

[0007] In the locked position, the button sleeve pushes the positioning member to pass through the inner fixing sleeve and snap into the rack, so that the positions of the telescopic inner tube and the telescopic outer tube are relatively fixed;

[0008] In the unlocking position, the gap between the button sleeve and the inner fixing sleeve is enlarged, providing a movable space for the positioning member to be disengaged from the rack, so that the telescopic inner tube and the telescopic outer tube can move relative to each other.

[0009] With the above structure, the locking device of the conductive telescopic tube has more reliable performance. Compared with the single locking position of the traditional design, the newly designed locking assembly can switch freely between the locked and unlocked positions. Through the cooperation of multiple positioning parts and the rack, each positioning part corresponds to a locking position, ensuring a more stable locking force. This innovation allows users to no longer be troubled by shaking when using the vacuum cleaner, improving the use effect and user experience of the vacuum cleaner.

[0010] According to one embodiment of the utility model, the telescopic inner tube is axially provided with a groove, the rack is embedded in the groove, or the telescopic inner tube is molded with the rack; when the rack is embedded in the groove, the rack is integrally molded by injection molding, which has low production cost and is easy to assemble; the telescopic inner tube directly molds the rack structure, and the telescopic inner tube has better integrity.

[0011] According to an embodiment of the utility model, the outer fixing sleeve is provided with a button hole, and the button sleeve protrusion is provided with a button portion, and the button portion passes through the button hole and is exposed relative to the outer fixing sleeve; by pressing the button portion, the button sleeve can move relative to the inner fixing sleeve to switch back and forth between the locked position and the unlocked position.

[0012] According to an embodiment of the utility model, a plane portion is provided on a side of the button cover away from the button portion, and an elastic member is provided between the plane portion and the external fixing cover, and the elastic member has an elastic tendency to keep the button cover in a locked position; compared with the curved surface portion on the button cover, the plane portion is used to contact the elastic member so that the elastic member is better stressed.

[0013] According to an embodiment of the utility model, the plane portion is provided with a positioning groove, and one end of the elastic member is located in the positioning groove; the provision of the positioning groove prevents the elastic member from generating relative displacement with the button cover during the deformation process.

[0014] According to an embodiment of the utility model, the external fixing sleeve includes a first cover body and a second cover body, the internal fixing sleeve is provided with a slot, and the first cover body and / or the second cover body have a matching structure adapted to the slot; the first cover body and the second cover body are connected to each other, so that the external fixing sleeve is sleeved on the outer periphery of the internal fixing sleeve, wherein the slot is provided to prevent relative rotation between the external fixing sleeve and the internal fixing sleeve.

[0015] According to an embodiment of the utility model, the inner fixing sleeve is provided with a through hole, and the diameter of the through hole decreases from the outside to the inside.

[0016] According to an embodiment of the utility model, the positioning member is a roller, and the minimum diameter of the through hole is smaller than the axial section of the roller; the above arrangement prevents the positioning member from escaping from the inner fixing sleeve from the through hole, i.e., restricts the positioning member between the outer fixing sleeve and the inner fixing sleeve.

[0017] According to one embodiment of the utility model, a brush head connector is provided at one end of the telescopic inner tube away from the telescopic outer tube, and a vacuum cleaner connector is provided at one end of the telescopic outer tube away from the telescopic inner tube; the brush head connector is used for externally connecting to a vacuum cleaner brush head, and the vacuum cleaner connector is used for externally connecting to a vacuum cleaner body.

[0018] According to one embodiment of the utility model, the telescopic inner tube and the telescopic outer tube are both provided with a layer for laying wires; the layer on the telescopic inner tube and the layer on the telescopic outer tube form a cable channel, which is separated from the air path formed by the combination of the telescopic inner tube and the telescopic outer tube.

[0019] A handheld vacuum cleaner comprises any one of the above-mentioned conductive telescopic tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional diagram of a conductive telescopic tube in an embodiment of the utility model;

[0022] Figure 2 An exploded view of the conductive telescopic tube in the embodiment of the utility model;

[0023] Figure 3 It is a front view of the conductive telescopic tube in the embodiment of the utility model;

[0024] Figure 4 It is a cross-sectional view of the conductive telescopic tube when locked in the embodiment of the utility model;

[0025] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0026] Figure 6 It is a cross-sectional view of the conductive telescopic tube when it is unlocked in the embodiment of the utility model;

[0027] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of the conductive telescopic tube in the embodiment of the utility model;

[0029] Fig. 9 An exploded cross-sectional view of a conductive telescopic tube in an embodiment of the utility model;

[0030] Fig.10 A three-dimensional diagram of a button cover in an embodiment of the utility model;

[0031] Fig.11 This is a schematic diagram of the structure of the button cover in the embodiment of the utility model;

[0032] Fig.12 It is a three-dimensional diagram of the inner fixing sleeve in the embodiment of the utility model.

[0033] Description of the numbers in the figure:

[0034] 1. Telescopic inner tube; 2. Telescopic outer tube; 3. Locking assembly; 4. Rack; 5. Brush head connector; 6. Vacuum cleaner connector;

[0035] 11. Groove;

[0036] 31. First cover body; 32. Second cover body; 33. Button cover; 34. Positioning member; 35. Elastic member; 36. Internal fixing sleeve;

[0037] 311, button hole;

[0038] 331, button portion; 332, plane portion; 333, positioning groove;

[0039] 361, through hole; 362, slot;

[0040] 41. Tooth groove. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0042] like Figure 1-12 As shown, in this embodiment, a conductive telescopic tube is disclosed, comprising a telescopic inner tube 1, a telescopic outer tube 2 and a locking assembly 3. A rack 4 is axially provided on the surface of the telescopic inner tube 1. The locking assembly 3 is installed at one end of the telescopic outer tube 2, and the locking assembly 3 comprises an outer fixing sleeve, a button sleeve 33, a positioning member 34 and an inner fixing sleeve 36. The outer fixing sleeve is sleeved on the outer periphery of the inner fixing sleeve 36. The button sleeve 33 is elastically sleeved between the inner fixing sleeve 36 and the outer fixing sleeve. At least two positioning members 34 are provided between the button sleeve 33 and the inner fixing sleeve 36. The button sleeve 33 moves between a locking position and an unlocking position relative to the inner fixing sleeve 36 in the radial direction.

[0043] In the locked position, the button sleeve 33 pushes at least a portion of the positioning member 34 to pass through the inner fixing sleeve 36 and snap into the rack 4, so that the telescopic inner tube 1 and the telescopic outer tube 2 are relatively fixed in position;

[0044] In the unlocked position, the gap between the button sleeve 33 and the inner fixing sleeve 36 is enlarged, providing a movable space for the positioning member 34 to be disengaged from the rack 4, so that the telescopic inner tube 1 and the telescopic outer tube 2 can move relative to each other.

[0045] Furthermore, in this embodiment, a brush head connector 5 is provided at one end of the telescopic inner tube 1 away from the telescopic outer tube 2, and a vacuum cleaner connector 6 is provided at one end of the telescopic outer tube 2 away from the telescopic inner tube 1; the brush head connector 5 is used for externally connecting a vacuum cleaner brush head, and the vacuum cleaner connector 6 is used for externally connecting a vacuum cleaner body.

[0046] In another embodiment, a vacuum cleaner connector 6 is disposed at one end of the telescopic inner tube 1 away from the telescopic outer tube 2 , and a brush head connector 5 is disposed at one end of the telescopic outer tube 2 away from the telescopic inner tube 1 .

[0047] Furthermore, in this embodiment, the telescopic inner tube 1 and the telescopic outer tube 2 are slidably matched, and the two form a telescopic rod structure. The telescopic inner tube 1 is axially provided with a groove 11, and the rack 4 is embedded in the groove 11. The outer side of the rack 4 is provided with a plurality of spaced tooth grooves 41. When the two positioning members 34 are simultaneously engaged in the tooth grooves 41, the positions of the telescopic inner tube 1 and the telescopic outer tube 2 are relatively fixed, and the overall length of the telescopic rod structure cannot be changed. When the button sleeve 33 is pressed, the button sleeve 33 is switched from the locked position to the unlocked position, and the gap between the button sleeve 33 and the inner fixed sleeve 36 is enlarged. At this time, the telescopic inner tube 1 is slid, and the positioning member 34 can be moved into the active space, so that the positioning member 34 is disengaged from the tooth grooves 41. As a result, the telescopic inner tube 1 loses the display of the positioning member 34, the positions of the telescopic inner tube 1 and the telescopic outer tube 2 are relatively active, and the overall length of the telescopic rod structure can be changed.

[0048] In another embodiment, the telescopic inner tube 1 is formed with the rack 4, and the telescopic inner tube 1 has better integrity.

[0049] Specifically, combined Figure 8 and Fig.12As shown, the outer fixing sleeve includes a first cover body 31 and a second cover body 32, the inner fixing sleeve 36 is provided with a slot 362, and the first cover body 31 and / or the second cover body 32 have a matching structure adapted to the slot 362 (not shown in the figure). The first cover body 31 is provided with a button hole 311, and the button sleeve 33 is convexly provided with a button portion 331, and the button portion 331 passes through the button hole 311 and is exposed relative to the outer fixing sleeve; by pressing the button portion 331, the button sleeve 33 can move radially relative to the inner fixing sleeve 36 to switch back and forth between the locked position and the unlocked position.

[0050] Specifically, combined Figure 10-11 As shown, a flat portion 332 is provided on one side of the button cover 33 away from the button portion 331, and an elastic member 35 is provided between the flat portion 332 and the outer fixing cover. The elastic member 35 has an elastic tendency to keep the button cover 33 in a locked position, and a positioning groove 333 is provided on the flat portion 332. One end of the elastic member 35 is located in the positioning groove 333. The elastic member 35 adopts a conical spring, and the larger end of the conical spring cooperates with the positioning groove 333, and the smaller end abuts against the inner wall of the outer fixing cover. Compared with the curved surface portion on the button cover 33, the flat portion 332 is used to contact the elastic member 35, so that the elastic member 35 is better stressed. The setting of the positioning groove 333 prevents the elastic member 35 from having a relative displacement with the button cover 33 during the deformation process.

[0051] Specifically, in this embodiment, the inner fixing sleeve 36 is provided with a through hole 361, and the diameter of the through hole 361 decreases from the outside to the inside. The positioning member 34 is a roller, and the minimum diameter of the through hole 361 is smaller than the axial cross section of the roller, so that the positioning member 34 cannot be separated from the inner fixing sleeve 36 from the through hole 361, that is, the positioning member 34 is restricted between the outer fixing sleeve and the inner fixing sleeve 36.

[0052] Specifically, the telescopic inner tube 1 and the telescopic outer tube 2 are both provided with an interlayer for laying wires (not shown in the figure); the interlayer on the telescopic inner tube 1 and the interlayer on the telescopic outer tube 2 form a cable channel, which is separated from the air path formed by the combination of the telescopic inner tube 1 and the telescopic outer tube 2.

[0053] In another embodiment, a handheld vacuum cleaner is disclosed, comprising the conductive telescopic tube described in this embodiment.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0059] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A conductive telescopic tube, characterized in that: The invention comprises a telescopic inner tube, a telescopic outer tube and a locking assembly, wherein a rack is axially arranged on the surface of the telescopic inner tube, the locking assembly is installed at one end of the telescopic outer tube, and the locking assembly comprises an outer fixing sleeve, a button sleeve, a positioning piece and an inner fixing sleeve, the outer fixing sleeve is sleeved on the outer periphery of the inner fixing sleeve, the button sleeve is elastically arranged between the inner fixing sleeve and the outer fixing sleeve, at least two positioning pieces are arranged between the button sleeve and the inner fixing sleeve, and the button sleeve moves between a locking position and an unlocking position relative to the inner fixing sleeve in the radial direction; In the locked position, the button sleeve pushes the positioning member to pass through the inner fixing sleeve and snap into the rack, so that the positions of the telescopic inner tube and the telescopic outer tube are relatively fixed; In the unlocking position, the gap between the button sleeve and the inner fixing sleeve is enlarged, providing a movable space for the positioning member to be disengaged from the rack, so that the telescopic inner tube and the telescopic outer tube can move relative to each other.

2. A conductive telescopic tube according to claim 1, characterized in that: The telescopic inner tube is axially provided with a groove, the rack is embedded in the groove, or the telescopic inner tube is molded with the rack.

3. The conductive telescopic tube according to claim 1, characterized in that: The outer fixing sleeve is provided with a button hole, and the button sleeve protrusion is provided with a button portion, and the button portion passes through the button hole and is exposed relative to the outer fixing sleeve.

4. A conductive telescopic tube according to claim 3, characterized in that: A plane portion is provided on one side of the button sleeve away from the button portion, and an elastic member is provided between the plane portion and the outer fixing sleeve. The elastic member has an elastic tendency to keep the button sleeve in a locked position.

5. The conductive telescopic tube according to claim 4, characterized in that: The plane portion is provided with a positioning groove, and one end of the elastic member is located in the positioning groove.

6. The conductive telescopic tube according to claim 1, characterized in that: The outer fixing sleeve comprises a first cover body and a second cover body, the inner fixing sleeve is provided with a clamping groove, and the first cover body and / or the second cover body have a matching structure adapted to the clamping groove.

7. The conductive telescopic tube according to claim 1, characterized in that: The inner fixing sleeve is provided with a through hole, and the diameter of the through hole decreases from the outside to the inside, and the minimum diameter of the through hole is smaller than the axial section of the positioning member.

8. The conductive telescopic tube according to claim 1, characterized in that: The telescopic inner tube and the telescopic outer tube are both provided with an interlayer for laying wires.

9. The conductive telescopic tube according to claim 1, characterized in that: A brush head connector is provided at one end of the telescopic inner tube away from the telescopic outer tube, and a vacuum cleaner connector is provided at one end of the telescopic outer tube away from the telescopic inner tube.

10. A handheld vacuum cleaner, characterized in that: It comprises the conductive telescopic tube as described in any one of claims 1 to 9.

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