WO2019029603A1 - 一种伸缩管装置及具有其的吸尘器 - Google Patents

一种伸缩管装置及具有其的吸尘器 Download PDF

Info

Publication number
WO2019029603A1
WO2019029603A1 PCT/CN2018/099546 CN2018099546W WO2019029603A1 WO 2019029603 A1 WO2019029603 A1 WO 2019029603A1 CN 2018099546 W CN2018099546 W CN 2018099546W WO 2019029603 A1 WO2019029603 A1 WO 2019029603A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
groove
spring
tube assembly
locking member
Prior art date
Application number
PCT/CN2018/099546
Other languages
English (en)
French (fr)
Inventor
魏娟
顾良
Original Assignee
天佑电器（苏州）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201711454596.2A external-priority patent/CN109381109A/zh
Application filed by 天佑电器（苏州）有限公司 filed Critical 天佑电器（苏州）有限公司
Priority to US16/634,660 priority Critical patent/US11399681B2/en
Publication of WO2019029603A1 publication Critical patent/WO2019029603A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings

Definitions

  • the invention relates to a telescopic tube device, in particular to a telescopic tube device for a vacuum cleaner.
  • the invention also relates to a vacuum cleaner having the above-described telescopic tube device.
  • a telescopic tube device having two springs, which can have two pushing directions, and realizes the function of telescopic tube expansion and contraction.
  • Chinese utility model patent CN 201870570 In U the spring is sandwiched between the positioning seat and the linking portion, and the two ends of the spring are not fixedly connected with the positioning seat or the linking portion, which means that the spring used is a compression spring, which is basically in the same type of telescopic tube device.
  • Use a compression spring Use a compression spring.
  • the use of the compression spring can cause the instability of the compression spring.
  • the instability of the compression spring means that when the load is too large, the compression spring will suddenly bend laterally, causing the stiffness of the compression spring to suddenly decrease.
  • the compression spring is not fixed, but is pressed against the two parts.
  • the compression spring is destabilized while the compression spring is present on the other side. Reverting to the free length, losing the restoring force is easy to cause displacement.
  • the height-to-diameter ratio is a parameter of the stability of the compression spring, and the ratio of the height to diameter (b) is the ratio of the free length of the compression spring (H0) to the diameter of the compression spring (d).
  • the medium diameter (d) of the compression spring refers to the mean value of the outer diameter (d1) of the compression spring and the inner diameter (d2) of the compression spring. The larger the height to diameter ratio (b), the more easily the compression spring is unstable.
  • the pipe diameter is not too large, that is, the height to diameter ratio of the compression spring is relatively high.
  • the technical problem to be solved by the present invention is to provide a telescopic tube device with good stability.
  • a telescopic tube device of the present invention includes a first tube, a second tube that is slidably coupled to the first tube, and an operation unit; the first tube sleeve is disposed in the second tube
  • the operating unit is disposed at a socket of the first tube and the second tube; the operating unit includes a first locking member, a second locking member and a limiting member; the first locking member is disposed at On the first tube, the second locking member and the limiting member are disposed on the second tube, and the first locking member and the second locking member are selectively engaged to limit the Relative sliding between the first tube and the second tube; when the telescopic tube device is in the locked state, the limiting member is in an initial position, between the first locking member and the second locking member Holding the card; when the telescopic tube device is in at least one release state, the limiting member is offset from the initial position, and the first locking member and the second locking member are disengaged; the operating unit is further Including at least one
  • the elastic member when the limiting member is located at the initial position or when the limiting member is offset from the initial position, the elastic member always gives the limiting member a pulling force, so that the The limit member has a tendency to move toward the initial position.
  • the elastic member is a coil spring.
  • the first tube assembly has a first tube body, a first tube first end that is sleeved with the second tube assembly, and a first tube second opposite the first tube first end
  • the second tube assembly has a second tube body, a second tube second end that is sleeved with the first tube assembly, and a second tube first end that is opposite the second tube second end.
  • the first end of the first tube is provided with a first end sleeve, and the first end sleeve and the second tube assembly are matched to limit each other to prevent the first tube assembly and the second tube assembly from sliding relative to each other. Disengaged; the second end of the first tube is provided with a second end sleeve, and the second end sleeve is connected to the handle assembly.
  • the second end of the second tube is provided with a liner fixedly connected to the second tube body, and the liner is sleeved on the inner side of the second tube body near the second end of the second tube. And the outer diameter of the liner is smaller than the inner diameter of the second pipe body.
  • the liner has a second end of the liner adjacent to the second end of the second tube and a first end of the liner opposite the second end of the liner, and the outer peripheral surface of the liner is provided along the liner a mating surface extending in the axial direction, a second groove is formed at an end of the mating surface adjacent to the first end of the liner, and the second groove is configured as a substantially rectangular non-through groove, and the bottom surface of the second groove is parallel to the mating surface but not in the same plane on.
  • a bottom surface of the second groove is provided with a third groove
  • the third groove is configured as a through groove penetrating the bottom surface of the second groove, and opposite to the end of the second groove near the second end of the liner,
  • the third slot is closer to the end of the second slot adjacent the first end of the liner, and the third slot always corresponds to the first locking member when the first tube assembly and the second tube assembly are relatively slid.
  • the second pipe body is provided with a first groove
  • the first groove is adjacent to the second end of the second pipe, and is configured to penetrate the long through groove of the second pipe body, and The length extending direction of one groove coincides with the extending direction of the axis L.
  • the operating member is configured as a push button
  • the push button is provided with a push button body
  • the shape of the push button body is matched with the outer peripheral surface of the second tube, and the push button body faces the second tube.
  • a second connecting portion is disposed at a substantially central position of the body, the second locking member is fixedly coupled to the second connecting portion; during the sliding process of the push button body, the second connecting portion is always within the range of the first slot .
  • the limiting member is configured as a slider, and the slider can be embedded in the first slot and slide along the length direction of the first slot.
  • the second locking member is configured as a lock block
  • the lock block is installed in the third slot and can be selectively slid in the radial direction of the telescopic tube device when the first tube assembly and When the second tube assembly does not slide relative to each other, the lock block engages with the first locking member, so that relative sliding between the first tube assembly and the second tube assembly cannot occur.
  • the elastic member includes a first spring and a second spring.
  • the first spring and the second spring are coil springs of the same specification, and the first spring and the second spring are disposed in the first slot.
  • the first spring and the second spring are disposed on both sides of the limiting member such that the limiting member is located at a center position of the first slot, and the central position is the initial position of the limiting member.
  • the first spring and the second spring when the limiting member is in the initial position, the first spring and the second spring are in a stretched state; when the limiting member is offset from the initial position, the first spring and the second spring are always stretched. status.
  • the first locking member is configured as a strip-shaped card slot, and the locking portion is at least two arranged on the card slot and arranged substantially along an extending direction of the axis L.
  • the locking groove, the direction in which the axis L extends is the radial direction of the first tube assembly and the second tube assembly.
  • an inter-groove portion is formed between two adjacent locking grooves, the card slot band having a first surface and a substantially parallel second surface opposite to the first surface.
  • the second surface of the card slot is bonded to the outer peripheral surface of the first tube.
  • the second pipe body is fixedly connected to the liner, and the position of the third groove substantially corresponds to the center of the first groove, and the position of the second groove substantially corresponds to the position of the first groove.
  • the length extension direction of the second groove is the same as the length extension direction of the first groove.
  • the present invention also provides a vacuum cleaner including the above-described telescopic tube device.
  • the technical effect that can be achieved by the invention is that when the telescopic tube is operated, the technical problem caused by using the compression spring can be avoided: the push button push distance is too large, and the side bend occurs in the middle of the compression spring in the pushing direction, that is, the compression spring is unstable. After the other compression spring returns to the free length, there is no fixed position and a positional shift occurs.
  • FIG. 1 is a schematic view of a telescopic tube according to an embodiment of the present invention.
  • FIG. 2 is a schematic view of another perspective view of a telescopic tube according to an embodiment of the present invention.
  • FIG. 3 is an exploded view of a telescopic tube in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic view of a push button according to an embodiment of the present invention.
  • Figure 5 is a schematic illustration of a slider in accordance with an embodiment of the present invention. .
  • Figure 6 is a schematic illustration of another perspective view of a slider in accordance with an embodiment of the present invention.
  • FIG. 7 is a schematic illustration of a lock block in accordance with an embodiment of the present invention.
  • Figure 8 is a schematic illustration of another perspective view of a lock block in accordance with an embodiment of the present invention.
  • Figure 9 is a schematic illustration of a telescoping tube in accordance with an embodiment of the present invention, which hides the push button.
  • Figure 10 is an enlarged view of the area A of Figure 9, with the telescopic tube in a locked state.
  • Figure 11 is an enlarged view of the area A of Figure 9, with the telescopic tube in a first released state.
  • Figure 12 is an enlarged view of the area A of Figure 9, with the telescopic tube in a second released state.
  • Figure 13 is a cross-sectional view of a telescopic tube in accordance with an embodiment of the present invention.
  • Figure 14 is an enlarged view of a region B of Figure 13, with the telescopic tube in a locked state.
  • Figure 15 is an enlarged view of a region B of Figure 13, with the telescopic tube in a first released state.
  • Figure 16 is an enlarged view of a region B of Figure 13, with the telescopic tube in a second released state.
  • Figure 17 is a cross-sectional view taken along line P-P of Figure 14.
  • Figure 18 is a schematic view of the liner.
  • Figure 19 is a schematic view of the second pipe body, and a partial enlarged view of the first groove.
  • Figure 20 is a schematic view of the slider in the locked state locking the lock block.
  • Figure 21 is a schematic view of another perspective view of the slider in the locked state locking the lock block.
  • Figure 22 is a schematic view of the slider releasing lock block in the second release state.
  • Figure 23 is a schematic illustration of another view of the slider unlocking block in the first release state/second release state.
  • the telescopic tube device 1 includes a first tube assembly 2, and a second tube assembly 3 slidably coupled to the first tube assembly 2. And operating unit 4.
  • the first tube assembly 2 is sleeved in the second tube assembly 3.
  • the first tube assembly 2 and the second tube assembly 3 have a radial central axis L, and the first tube assembly 2 and the second tube assembly 3 are relatively slidable in the direction in which the axis L extends.
  • the first tube assembly 2 has a first tube body 21 made of a metal material, a first tube first end 201 that is sleeved with the second tube assembly 3, and a first tube second end 202 opposite the first tube first end 201.
  • the first end of the first tube 201 is provided with a first end sleeve 211.
  • the first end sleeve 211 and the second tube assembly 3 are engaged with each other to prevent the first tube assembly 2 and the second tube assembly 3 from being detached from each other when sliding relative to each other.
  • the second end 202 of the first tube is provided with a second end sleeve 212.
  • the second end sleeve 212 is connected to the handle assembly 5 for the user to conveniently hold the telescopic tube device 1.
  • the second tube assembly 3 has a second tube body 31 made of a metal material, a second tube second end 302 that is sleeved with the first tube assembly 2, and a second tube first end 301 opposite the second tube second end 302.
  • the operating unit 4 is disposed at a socket of the first tube assembly 2 and the second tube assembly 3.
  • the operating unit 4 includes a first locking member, a second locking member and a limiting member; the first locking member is disposed on the first tube assembly 2, and the second locking member and the limiting member are disposed at the On the second tube assembly 3, the first locking member and the second locking member are selectively engaged to restrict relative sliding between the first tube assembly 2 and the second tube assembly 3 .
  • the first locking member is configured as a strip-shaped card slot 22 as shown in FIGS. 2 to 3.
  • the card slot tape 22 includes at least one concave locking slot 22b having a first face and a substantially parallel second face opposite the first face.
  • the first surface of the card slot tape 22 is provided with a plurality of concave locking grooves 22b distributed along the longitudinal direction thereof, and the groove portions 22a are formed between the adjacent two locking grooves 22b.
  • the second surface of the card slot 22 is in contact with the outer peripheral surface of the first tube 31, and the card slot 22 is fixedly connected to the first tube 21, and the longitudinal direction of the slot strip 22 is substantially the same as the direction in which the axis L extends. .
  • the card slot 22 and the first body 21 may be integrally provided.
  • the lock groove 22b is configured as a strip-shaped card slot extending in a direction perpendicular to the axis L.
  • the lock slot 22b can also be configured as a point-like card slot.
  • the second locking member is configured as a locking block 44 as shown in FIGS. 7-8
  • the limiting member is configured as a slider 42 as shown in FIGS.
  • the operation unit 4 further includes an operating member configured as a push button 41 as shown in FIGS. 3 to 4.
  • the second end 302 of the second tube is provided with a liner 32 fixedly connected to the second tube 31, and the liner 32 is sleeved on the inner side of the second tube 31 adjacent to the second end 302 of the second tube.
  • the outer diameter of the liner 31 is smaller than the inner diameter of the second tubular body 31, that is, a gap having a width h1 exists between the outer circumferential surface of the liner 32 and the inner circumferential surface of the second tubular body 31.
  • the liner 32 has a liner second end 3202 adjacent the second end of the second tube and a liner first end 3201 opposite the liner second end 3202.
  • the outer circumferential surface of the liner 32 is provided with a mating surface 321 extending in the axial direction thereof.
  • the end of the mating surface 321 adjacent to the first end 3201 of the liner is provided with a second groove 322.
  • the second groove 322 is configured to be substantially rectangular and non-through.
  • the groove, the bottom surface of the second groove 322 and the mating surface 321 have a height difference h2.
  • the bottom surface of the second slot 322 is provided with a third slot 323.
  • the third slot 323 is configured as a through slot extending through the bottom surface of the second slot 322, and adjacent to the second slot 322 near the end of the second end 3202 of the liner, the third slot 323
  • the second slot 322 is closer to the end of the first end 3201 of the liner.
  • the third groove 323 always corresponds to the card slot band 22.
  • a nut groove 324 is symmetrically provided on both sides of the mating surface 321 perpendicular to the direction of the axis L.
  • At least one rib 325 is further disposed on the outer circumferential surface of the liner 32.
  • the rib 325 extends from the first end 3201 of the liner to the second end 3202 of the liner substantially in the direction of the axis L.
  • the height of the rib 325 is equal to or slightly smaller than H1.
  • a first groove 311 is formed on the wall of the second pipe body 31 adjacent to the second end 302 of the second pipe, and the first groove 311 is configured to extend through the pipe wall of the second pipe body 31.
  • the groove is formed, and the length extending direction of the first groove 311 coincides with the extending direction of the axis L.
  • Screw holes 314 are symmetrically provided on both sides of the first groove 311 along the circumferential direction of the second pipe body 31.
  • the inner peripheral wall of the nut groove 324 is threaded.
  • the liner 31 and the second tubular body 31 may also be fixedly connected together by other known forms, such as riveting, gluing, etc., or may be integrally formed.
  • the position of the third groove 323 substantially corresponds to the center of the first groove 311, and the position of the second groove 322 is substantially the same as the position of the first groove 311.
  • the length extension direction of the second groove 322 is the same as the length extension direction of the first groove 311.
  • the first groove 311 and the second groove 322 are both rectangular, the geometric center of the first groove 311 corresponds to the geometric center of the second groove 322, and the first groove 311 is circumferentially along the second tube 31.
  • the width is smaller than the width of the second groove 322 in the circumferential direction of the second pipe body 31, that is, the orthographic projection of the first groove 311 falls inside the orthographic projection of the second groove 322.
  • a pair of ribs 313 are symmetrically disposed on the outer circumferential surface of the second tubular body 31 in the first groove 311 along both circumferential sides of the second tubular body 31.
  • the length of the rib 313 extends in the same direction as the direction in which the axis L extends.
  • the rib 313 may be integrally formed with the second pipe body 31, or may be a separate component fixedly coupled to the outer circumference of the second pipe body 31.
  • the push button 41 has a push button main body 411 having an arcuate cross section, and the shape of the push button main body 411 is adapted to the outer peripheral surface of the second tubular body 31.
  • the first connecting portion 4111 is symmetrically disposed on opposite sides of the push button body 411. Specifically, the first connecting portion 4111 is configured to have an edge of the push button body 411, an inwardly extending side extending substantially in the radial direction of the second tubular body 31 toward the axis L.
  • the first connecting portion 4111 is engaged with the protruding strip 313, and defines a push button 41 to slide on the outer peripheral surface of the second tubular body 31 along the extending direction of the axis L.
  • a second connecting portion 412 is provided at a substantially central position of the surface of the push button main body 411 facing the second tubular body 31, and the second connecting portion 412 is configured to be directed by the push button main body 411 toward the surface of the second tubular body 31, substantially along the second
  • the tube body 31 has a projection extending radially in the direction of the axis L. During the sliding of the push button body 411, the second connecting portion 412 is always within the range of the first groove 311.
  • the slider 42 is mounted in the first groove 311, and the width of the main body of the slider 42 along the width direction of the first groove 311 is slightly smaller than the width of the first groove 311.
  • the body of the slider 42 can be embedded in the first groove 311 and slid along the length direction of the first groove 311.
  • the body of the slider 42 has a substantially planar slider first face 4201 and a slider second face 4202 opposite the slider first face 4201.
  • the first face 4201 of the slider faces the liner 32, and the second face 4202 of the slider faces the push button 41.
  • the body of the slider 42 is symmetrically disposed along the two sides of the length direction of the first groove 311, and is provided with a third connecting portion 4211 and a fourth connecting portion 4212.
  • the third connecting portion 4211 and the fourth connecting portion 4212 are configured as a hollow ring shape.
  • the body of the slider 42 is symmetrically disposed on both sides of the width direction of the first groove 311.
  • the fin portion 4211 is configured to be substantially coplanar with the first face 4201 of the slider and protrude from the slider 42.
  • the maximum width of the slider 42 in the direction in which the width of the first groove 311 extends is greater than the width of the first groove 311.
  • the fin portion 4221 is in contact with the inner circumferential surface of the second pipe body 31, preventing the slider 42 from being separated from the first groove 311 in a direction away from the axis L.
  • the fins 4221 are provided with a fin first inclined surface 4221a and a fin second inclined surface 4221b, the fin first inclined surface 4221a and the fin second inclined surface 4221b along both edges of the first slot 311 extending in the length direction. The thickness gradually decreases from the center to the edge.
  • a substantially geometric center position of the second surface 4202 of the slider is provided with a fifth connecting portion 4203, and the fifth connecting portion 4203 is configured as a groove whose shape and size are adapted to the shape and size of the second connecting portion 412.
  • the second connecting portion 412 can be inserted into the fifth connecting portion 4203.
  • the lock block 44 is mounted in the third groove 323 and is selectively slidable in the radial direction of the bellows device 1.
  • the body of the lock block 44 has a first face of the lock block facing the card slot belt 22.
  • the first face of the lock block is provided in parallel with the first protrusion 4411 and the second protrusion 4412.
  • the first convex portion 4411 and the second convex portion 4412 are configured as strip-like protrusions extending in a direction perpendicular to the extending direction of the axis L, and the first convex portion 4411 and the second convex portion 4422 are formed to extend in a direction extending perpendicular to the axis L.
  • a first convex portion inclined surface 4411a is disposed on a side of the first convex portion 4411 away from the concave portion 442, and a second convex portion inclined surface 4412a is disposed on a side of the second convex portion 4412 away from the concave portion 442.
  • the lock block 44 is engaged with the card slot belt 22. Specifically, the first convex portion 4411 and the second convex portion 4412 are caught in the adjacent two locking grooves 22b, and the inter-groove portion 22a between the adjacent two locking grooves 22b is caught in the concave portion 442.
  • the lock block 44 If the lock block 44 is restrained, relative sliding between the first tube assembly 2 and the second tube assembly 3 cannot occur due to the engagement between the lock block 44 and the card slot belt 22. If the lock block 44 is not restrained and can slide in the radial direction of the telescopic tube device 1 in a direction away from the axis L to disengage the lock block 44 from the card slot band 22, the first tube assembly 2 and the second tube assembly A relative slip can occur between the three.
  • the strip-like protrusions may also be provided in one, three or more.
  • the body of the lock block 44 is symmetrically disposed on both sides perpendicular to the direction in which the axis L extends, and the flange 440 extends in a direction away from the first face of the lock block.
  • Both ends of the flange 440 extending in the direction of the axis L are provided with a flange first slope 4401a and a flange second slope 4401b.
  • the slope of the first bevel 4401a of the flange is adapted to the slope of the second bevel 4221b of the fin, and the slope of the second bevel 4401b of the flange is adapted to the slope of the first bevel 4221a of the fin.
  • the operating unit 4 further includes at least one elastic member; when the limiting member is offset from the initial position, the elastic member always gives the limiting member a pulling force, so that the limiting member has a direction toward the initial position.
  • the elastic member includes a first spring 431 and a second spring 432.
  • the first spring 431 and the second spring 432 are configured as coil springs of the same specification
  • the first spring 431 has a first spring first connecting portion 431a and a first spring second connecting portion 431b disposed at both ends thereof
  • the second spring The 432 has a second spring second connecting portion 432a and a second spring second connecting portion 431b disposed at both ends thereof.
  • the first spring first connecting portion 431a, the first spring second connecting portion 431b, the second spring first connecting portion 432a, and the second spring second connecting portion 432b are each configured as a hook-like structure.
  • the first spring 431 is disposed in the first slot 311 and is located between the first hole 3121 and the third connecting portion 4211.
  • the first spring first connecting portion 431a is connected to the first hole 3121, and the first spring second connecting portion 341b It is connected to the third connecting portion 4211.
  • the second spring 432 is disposed in the first slot 311 and is located between the second hole 3122 and the fourth connecting portion 4212.
  • the second spring second connecting portion 432a is connected to the fourth connecting portion 4212, and the second spring is connected to the second connecting portion.
  • the 432b is connected to the second hole 3122. Since the specifications of the first spring 431 and the second spring 432 are the same, the slider 42 will be located at the center position of the first groove 311, that is, the initial position of the slider 42. In the present embodiment, when the slider 42 is in the initial position, the first spring 431 and the second spring 432 are in a stretched state, that is, the first spring 431 and the second spring 432 give the slider 42 equal and opposite pulling forces. . Further preferably, when the slider 42 is deviated from the initial position, the first spring 431 and the second spring 432 are always in a stretched state.
  • the limiting member When the telescopic tube device is in the locked state, the limiting member is in an initial position, the first locking member and the second locking member are kept engaged; when the telescopic tube device is in at least one release state When the limiting member is offset from the initial position, the first locking member and the second locking member are disengaged.
  • the slider 42 when the slider 42 is in the initial position, as shown in FIG. 10, FIG. 14, FIG. 17, FIG. 20, FIG. 21, the slider 42 is positioned corresponding to the third groove 323, and the wing portion 4221 is abutted against the convex portion.
  • the edge 440 realizes the limitation of the slider 44 to the lock block 42, so that the lock block 42 cannot slide in the radial direction away from the card slot 22 in the radial direction of the extension tube device 1, and the card is held between the lock block 42 and the card slot 22 In the combined state, the relative sliding between the first tube assembly 2 and the second tube assembly 3 cannot be achieved at this time.
  • the telescoping tube device 1 When not in operation, the telescoping tube device 1 remains locked.
  • the first tube assembly 2 is fixedly held by one hand (usually gripping the handle assembly 5), and the push button 41 is pushed by one hand to slide to the left (in the direction of the first tube assembly 2).
  • the push button 41 drives the slider 42 to slide to the left in the first groove 311.
  • the pulling force of the first spring 431 to the slider 42 is increased, and the pulling force of the second spring 432 to the slider 42 is reduced, that is, the first spring 431 and the second spring 432 are opposite to the slider.
  • the resultant force of 42 is to the right and gradually increases.
  • the slider 42 gradually deviates from its initial position while gradually disengaging the path in which the lock block 44 slides downward in the third slot 322.
  • the left limit position can be defined by the sliding connection structure of the push button 41, and can also be defined by the sliding connection structure of the slider 42, or can be defined by the length of the first groove 311,
  • the user continues to apply a force to the push button 41 to slide it to the left.
  • the operating unit 4 transmits the force to The second tube assembly 3 has a tendency to slide along the axis L toward the handle assembly 5. Since the limit of the lock block 44 is released at this time, the left side faces of the first convex portion 4411 and the second convex portion 4412 are subjected to the reaction force of the lock groove 22b and the groove portion 22b, so that the lock block 44 and the card groove band 22 are When the engagement is released, the lock block 44 slides down along the third slot 323, so that the first tube assembly 2 and the second tube assembly 3 can slide relative to each other, and the extension tube device 1 is in the first release state.
  • the user continues to apply a force to the push button 41 to slide it to the left, thereby achieving relative contraction between the first tube assembly 2 and the second tube assembly 3.
  • the user releases the force on the push button 41.
  • the slider 42 slides to the initial position, and the first inclined surface 4221a of the fin is convex.
  • the second inclined surface 4401b applies a rightward force to push the lock block 44 upward along the third groove 323 to engage with the card slot belt 22.
  • the slider 42 returns to the initial position, the fin portion 4221 abuts against the flange 440, causing the lock block 44 to remain engaged with the card slot band 22, and the bellows device returns to the locked state.
  • the first tube assembly 2 is fixedly held by one hand (usually gripping the handle assembly 5), and the push button 41 is pushed by one hand to slide to the right (away from the first tube assembly 2). , as shown in Figure 12 and Figure 16.
  • the push button 41 drives the slider 42 to slide to the right in the first groove 311.
  • the pulling force of the second spring 432 to the slider 42 is increased, and the pulling force of the first spring 431 to the slider 42 is reduced, that is, the first spring 431 and the second spring 432 are opposite to the slider.
  • the resultant force of 42 is to the left and gradually increases.
  • the slider 42 gradually deviates from its initial position while gradually disengaging the path in which the lock block 44 slides downward in the third slot 322.
  • the right limit position can be defined by the sliding connection structure of the push button 41, and can also be defined by the sliding connection structure of the slider 42, or can be defined by the length of the first groove 311,
  • the user continues to apply a force to the push button 41 to slide it to the right, at which time the operating unit 4 transmits the force to the push button 41 due to the sliding of the push button 41.
  • the second tube assembly 3 has a tendency to slide away from the handle assembly 5 along the axis L. Since the limit of the lock block 44 is released at this time, the right side faces of the first convex portion 4411 and the second convex portion 4412 are subjected to the reaction force of the lock grooves 22a, 22b, so that the card between the lock block 44 and the card slot band 22 When the disengagement is released, the lock block 44 slides down along the third slot 323, so that the first tube assembly 2 and the second tube assembly 3 can slide relative to each other, and the telescopic tube device 1 is in the first release state. The user continues to apply a force to the push button 41 to slide it to the right to achieve relative elongation between the first tube assembly 2 and the second tube assembly 3.
  • the user When elongating to a suitable length, the user releases the force on the push button 41. At this time, under the action of the first spring 431 and the second spring 432, the slider 42 slides to the initial position, and the second second inclined surface 4221b of the fin The flange first slope 4401a applies a leftward force, and the push block 44 is slid upward along the third slot 323 to engage with the card slot 22.
  • the slider 42 returns to the initial position, the fin portion 4221 abuts against the flange 440, causing the lock block 44 to remain engaged with the card slot band 22, and the bellows device returns to the locked state.
  • the user can continue the telescopic operation of the telescopic tube device 1 by continuously pushing the push button 4 in the direction in which the second tube assembly 3 is desired to move.
  • the operating unit 4 of the telescopic tube device 1 of the present invention utilizes a tension spring, and the two ends of the tension spring are hooked at both ends of the same horizontal plane, one is not easily dislocated from the position thereof, and the second is the stretching of the tension spring.
  • the direction is along a horizontal line, and the relative compression is generated under the action of the restoring force, and there is a tendency to return to the natural state, and the instability phenomenon of the offset bending which is easy to occur when using the compression spring does not occur.
  • the slender shape of the tension spring itself determines the locking device that is more suitable for the telescopic tube.
  • the installation of the tension spring is more convenient and faster than the compression spring.
  • the present invention also provides another embodiment, a vacuum cleaner comprising the above-described telescopic tube device 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

本发明涉及一种伸缩管装置，包括第一管、与所述第一管相对滑动连接的第二管和操作单元；所述第一管套设在所述第二管内；所述操作单元设置在所述第一管与所述第二管的套接处；所述操作单元包括第一锁定件、第二锁定件和限位件；当所述伸缩管装置处于锁定状态时，所述限位件在初始位置，所述第一锁定件与所述第二锁定件之间保持卡合；当所述伸缩管装置处于至少一个释放状态时，所述限位件偏离初始位置，所述第一锁定件与所述第二锁定件之间解除卡合；所述操作单元还包括至少一弹性件；当所述限位件在所述初始位置时，所述弹性件给予所述限位件拉力，使所述限位件具有保持在所述初始位置的趋势。

Description

一种伸缩管装置及具有其的吸尘器 技术领域
本发明涉及一种伸缩管装置，特别涉及一种用于吸尘器的伸缩管装置。本发明还涉及一种吸尘器，其具有上述伸缩管装置。
 背景技术
现有技术中已有一种具有两根弹簧，可以有两个推动方向的伸缩管装置，实现伸缩管伸缩的功能。例如，中国实用新型专利CN 201870570 U中，弹簧是夹在定位座与连动部之间，且弹簧的两端没有与定位座或连动部固定连接，这意味着所用的弹簧是压簧，在同类伸缩管装置中基本也是使用压簧。但是使用压簧会出现压簧失稳的问题，压簧失稳是指在负载过大时，压簧会突然侧向弯曲，使压簧的刚度突然降低。在现有技术中，压簧并没有固定，只是靠两部件压抵住，在操作过程中，会存在推钮推动距离过大时，一边压簧发生压簧失稳，而另一边压簧存在回复到自由长度，失去回复力很容易造成移位。更重要的是，在压簧失稳的现象中，高径比是一个压簧稳定性的参数，高径比（b）即压簧自由长度（H0）与压簧中径（d）之比，压簧中径（d）是指压簧外径（d1）与压簧内径（d2）的均值，高径比（b）越大，压簧越容易失稳。然而在伸缩管装置中，管径不会太大，也就是说压簧的高径比会相对较高。
 技术问题
本发明要解决的技术问题是提供一种稳定性好的伸缩管装置。
 技术解决方案
为解决上述技术问题，本发明的一种伸缩管装置，包括第一管、与所述第一管相对滑动连接的第二管和操作单元；所述第一管套设在所述第二管内；所述操作单元设置在所述第一管与所述第二管的套接处；所述操作单元包括第一锁定件、第二锁定件和限位件；所述第一锁定件设置在所述第一管上，所述第二锁定件和限位件设置在所述第二管上，所述第一锁定件与所述第二锁定件之间可选择地卡合以限制所述第一管与所述第二管之间的相对滑动；当所述伸缩管装置处于锁定状态时，所述限位件在初始位置，所述第一锁定件与所述第二锁定件之间保持卡合；当所述伸缩管装置处于至少一个释放状态时，所述限位件偏离初始位置，所述第一锁定件与所述第二锁定件之间解除卡合；所述操作单元还包括至少一弹性件；当所述限位件在所述初始位置时，所述弹性件给予所述限位件拉力，使所述限位件具有保持在所述初始位置的趋势。
作为本发明的一具体实施方式，当所述限位件位于所述初始位置或当所述限位件偏离所述初始位置时，所述弹性件始终给予所述限位件拉力，使所述限位件具有向所述初始位置运动的趋势。
作为本发明的一具体实施方式，所述弹性件为螺旋弹簧。
作为本发明的一具体实施方式，所述第一管组件具有第一管体、与第二管组件套接的第一管第一端和与第一管第一端相对的第一管第二端；所述第二管组件具有第二管体、与第一管组件套接的第二管第二端和与第二管第二端相对的第二管第一端。
作为本发明的一具体实施方式，第一管第一端设有第一端套，第一端套与第二管组件配合限位，防止第一管组件与第二管组件在相对滑动时相互脱离；第一管第二端设有第二端套，第二端套连接手柄组件。
作为本发明的一具体实施方式，所述第二管第二端设有与第二管体固定连接的衬管，所述衬管套设在第二管体靠近第二管第二端的内侧，且衬管的外径小于第二管体的内径。
作为本发明的一具体实施方式，所述衬管具有靠近第二管第二端的衬管第二端和与衬管第二端相对的衬管第一端，衬管的外周面设有沿其轴向方向延伸的配合面,配合面靠近衬管第一端的一端设有第二槽，第二槽构造为大致呈矩形的非贯通槽，第二槽的底面与配合面相平行但不在同一平面上。
作为本发明的一具体实施方式，所述第二槽的底面设有第三槽，第三槽构造为贯穿第二槽底面的通槽，且相对于第二槽靠近衬管第二端的一端，第三槽距离第二槽靠近衬管第一端的一端更近，当第一管组件和第二管组件相对滑动时，第三槽始终对应所述第一锁定件。
作为本发明的一具体实施方式，所述第二管体上设有第一槽，所述第一槽靠近第二管第二端，构造为贯穿第二管体的长形通槽，且第一槽的长度延伸方向与轴线L的延伸方向一致。
作为本发明的一具体实施方式，所述操作件构造为推钮，推钮设有推钮主体，所述推钮主体的形状与第二管体外周面相适配，推钮主体朝向第二管体的面大致中心位置设有第二连接部，所述第二锁定件固定连接于所述第二连接部；在推钮主体的滑动过程中，第二连接部始终在第一槽的范围内。
作为本发明的一具体实施方式，所述限位件构造为滑块，所述滑块能嵌在第一槽内，并沿第一槽的长度方向滑动。
作为本发明的一具体实施方式，所述第二锁定件构造为锁块，所述锁块安装在第三槽内，可以选择地沿伸缩管装置的径向方向滑动，当第一管组件和第二管组件没有相对滑动时，锁块与所述第一锁定件卡合，使第一管组件和第二管组件之间无法发生相对滑动。
作为本发明的一具体实施方式，所述弹性件包括第一弹簧和第二弹簧，第一弹簧和第二弹簧为规格相同的螺旋弹簧，第一弹簧和第二弹簧设置在第一槽内，第一弹簧和第二弹簧设在限位件两侧，使限位件位于第一槽的中心位置，所述中心位置即为限位件的初始位置。
作为本发明的一具体实施方式，在限位件位于初始位置时，第一弹簧和第二弹簧处于拉伸状态；在限位件偏离初始位置时，第一弹簧和第二弹簧始终处于拉伸状态。
作为本发明的一具体实施方式，所述第一锁定件构造为条状的卡槽带，所述锁定部为设置在所述卡槽带上、基本沿轴线L的延伸方向排列的至少两个锁槽，所述轴线L的延伸方向是第一管组件和第二管组件的径向方向。
作为本发明的一具体实施方式，两相邻所述锁槽之间形成槽间部，所述卡槽带具有第一面、以及与所述第一面相对的基本平行的第二面，所述卡槽带的第二面与第一管体的外周面贴合。
作为本发明的一具体实施方式，所述第二管体与衬管固定连接，且第三槽的位置与第一槽的中心大致对应，第二槽的位置与第一槽的位置大致对应，且第二槽的长度延伸方向与第一槽的长度延伸方向相同。
本发明还提供一种包括上述伸缩管装置的吸尘器。
 有益效果
本发明能够达到的技术效果是，在操作伸缩管时，可以避免使用压簧所产生的技术问题：推钮推动距离过大，沿推动方向的压簧中间发生侧弯，即压簧失稳，另一压簧回复到自由长度后，没有固定住位置，发生位置的偏移。
 附图说明
图1是本发明一具体实施方式的伸缩管的示意图。
图2是本发明一具体实施方式的伸缩管另一视角的示意图。
图3是本发明一具体实施方式的伸缩管的爆炸图。
图4是本发明一具体实施方式的推钮的示意图。
图5是本发明一具体实施方式的滑块的示意图。。
图6是本发明一具体实施方式的滑块的另一视角的示意图。
图7是本发明一具体实施方式的锁块的示意图。
图8是本发明一具体实施方式的锁块的另一视角的示意图。
图9是本发明一具体实施方式的伸缩管的示意图，该图隐藏了推钮。
图10是图9中区域A的放大图，伸缩管处于锁定状态。
图11是图9中区域A的放大图，伸缩管处于第一释放状态。
图12是图9中区域A的放大图，伸缩管处于第二释放状态。
图13是本发明一具体实施方式的伸缩管的剖视图。
图14是图13中区域B的放大图，伸缩管处于锁定状态。
图15是图13中区域B的放大图，伸缩管处于第一释放状态。
图16是图13中区域B的放大图，伸缩管处于第二释放状态。
图17是图14中沿P-P线的剖视图。
图18是衬管示意图。
图19是第二管体示意图，及第一槽局部放大图。
图20是锁定状态下的滑块锁住锁块的示意图。
图21是锁定状态下的滑块锁住锁块的另一视角的示意图。
图22是第二释放状态下的滑块解除锁块的示意图。
图23是第一释放状态/第二释放状态下的滑块解除锁块的另一视角的示意图。
 本发明的实施方式
以下将结合附图所示的具体实施方式对本发明进行详细描述。但这些实施方式并不限制本发明，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。
下面结合附图及实施例对本发明进行详细说明。
如图1~图23所示是本发明的伸缩管装置的较佳实施例，该伸缩管装置1包括第一管组件2、与所述第一管组件2相对滑动连接的第二管组件3和操作单元4。
所述第一管组件2套设在所述第二管组件3内。在本实施例中，第一管组件2和第二管组件3具有径向中心轴线L，第一管组件2和第二管组件3之间可沿轴线L的延伸方向相对滑动。第一管组件2具有金属材质的第一管体21、与第二管组件3套接的第一管第一端201和与第一管第一端201相对的第一管第二端202。第一管第一端201设有第一端套211，第一端套211与第二管组件3配合限位，防止第一管组件2与第二管组件3在相对滑动时相互脱离。第一管第二端202设有第二端套212。第二端套212连接有手柄组件5，供使用者方便握持伸缩管装置1。第二管组件3具有金属材质的第二管体31、与第一管组件2套接的第二管第二端302和与第二管第二端302相对的第二管第一端301。
所述操作单元4设置在所述第一管组件2与所述第二管组件3的套接处。所述操作单元4包括第一锁定件、第二锁定件和限位件；所述第一锁定件设置在所述第一管组件2上，所述第二锁定件和限位件设置在所述第二管组件3上，所述第一锁定件与所述第二锁定件之间可选择地卡合以限制所述第一管组件2与所述第二管组件3之间的相对滑动。
在本实施例中，第一锁定件构造为如图2~图3所示的条状的卡槽带22。具体地，卡槽带22包括设有至少一个凹状的锁槽22b，卡槽带22具有第一面和与所述第一面相对的基本平行的第二面。在本实施例中，卡槽带22的第一面设有多个沿其长度方向分布的凹状的锁槽22b，相邻两锁槽22b之间形成槽间部22a。卡槽带22的第二面与第一管体31的外周面贴合，卡槽带22与第一管体21相对固定连接，且卡槽带22的长度方向与轴线L的延伸方向基本一致。在其他实施例中，卡槽带22与第一管体21可为一体设置。在本实施例中，锁槽22b构造为沿垂直于轴线L方向延伸的条状卡槽。在其他实施例中，锁槽22b也可构造为点状卡槽。
在本实施例中，第二锁定件构造为如图7~图8所示的锁块44，限位件构造为如图5~图6所示的滑块42。操作单元4还包括操作件，所述操作件构造为如图3~图4所示的推钮41。具体地，第二管第二端302设有与第二管体31固定连接的衬管32，所述衬管32套设在第二管体31靠近第二管第二端302的的内侧，且衬管31的外径小于第二管体31的内径，即衬管32的外周面与第二管体31的内周面之间存在宽度为h1的间隙。
如图18所示，衬管32具有靠近第二管第二端的衬管第二端3202和与衬管第二端3202相对的衬管第一端3201。衬管32的外周面设有沿其轴向方向延伸的配合面321，配合面321靠近衬管第一端3201的一端设有第二槽322，第二槽322构造为大致呈矩形的非贯通槽，第二槽322的底面与配合面321具有高度差h2。第二槽322的底面设有第三槽323，第三槽323构造为贯穿第二槽322底面的通槽，且相对于第二槽322靠近衬管第二端3202的一端，第三槽323距离第二槽322靠近衬管第一端3201的一端更近。当第一管组件2和第二管组件3相对滑动时，第三槽323始终对应卡槽带22。在配合面321垂直于轴线L方向的两侧对称地设有螺母槽324。在衬管32的外周面还设有至少一条凸筋325，凸筋325大致沿轴线L方向、从衬管第一端3201延伸至衬管第二端3202，凸筋325的高度等于或略小于h1。当衬管32与第二管体31固定连接时，凸筋325位于衬管32的外周面与第二管体31的内周面之间的间隙内，增强连接稳定性、防止衬管32与第二管体31之间相对晃动。
如图19所示，第二管体31上靠近第二管第二端302的管壁上设有第一槽311，所述第一槽311构造为贯穿第二管体31管壁的长形通槽，且第一槽311的长度延伸方向与轴线L的延伸方向一致。在第一槽311沿第二管体31周向的两侧对称地设有螺钉孔314。当衬管31与第二管体31通过螺钉315固定连接时，螺钉穿过第二管体31后与螺母槽324螺纹连接。在本实施例中，螺母槽324内固定地设有螺母。在其他实施例中，螺母槽324的内周壁设有螺纹。在另外的实施例中，衬管31与第二管体31也可通过其他公知的形式固定连接在一起，如铆接、胶接等，也可一体成型。在本实施例中，当衬管31与第二管体31固定连接时，第三槽323的位置与第一槽311的中心大致对应，第二槽322的位置与第一槽311的位置大致对应，且第二槽322的长度延伸方向与第一槽311的长度延伸方向相同。在本实施例中，第一槽311和第二槽322均为矩形，第一槽311的几何中心与第二槽322的几何中心相对应，第一槽311沿第二管体31周向的宽度小于第二槽322沿第二管体31周向的宽度，即第一槽311的正投影落在第二槽322的正投影内部。在本实施例中，第二管体31外周面上、在第一槽311沿第二管体31周向的两侧对称地设有一对凸条313。凸条313的长度延伸方向与轴线L的延伸方向相同。凸条313可以与第二管体31一体成型，也可以是独立的零件固定连接在第二管体31的外周上。
如图3~图4、图17所示，推钮41具有截面为弧形的推钮主体411，推钮主体411的形状与第二管体31外周面相适配。推钮主体411的相对两边对称地设有第一连接部4111。具体地，第一连接部4111构造为有推钮主体411边缘、大致沿第二管体31径向、朝向轴线L方向延伸的内翻边。第一连接部4111与凸条313扣合，限定了推钮41沿轴线Ｌ的延伸方向、在第二管体31的外周面上滑动。在推钮主体411朝向第二管体31的面的大致中心位置设有第二连接部412，第二连接部412构造为由推钮主体411朝向第二管体31的面、大致沿第二管体31径向、朝向轴线L方向延伸的凸起。在推钮主体411的滑动过程中，第二连接部412始终在第一槽311的范围内。
如图3、图5~图6、图17所示，滑块42安装在第一槽311内，滑块42的本体沿第一槽311宽度延伸方向的宽度略小于第一槽311的宽度，使得滑块42的本体能够嵌在第一槽311内，并沿第一槽311的长度方向滑动。滑块42的本体具有基本为平面的滑块第一面4201和与滑块第一面4201相对的滑块第二面4202。滑块第一面4201朝向衬管32，滑块第二面4202朝向推钮41。滑块42的本体沿第一槽311长度延伸方向的两侧面对称地设有第三连接部4211和第四连接部4212，第三连接部4211和第四连接部4212构造为中空的环形。滑块42的本体沿第一槽311宽度延伸方向的两侧面对称地设有翅部4221，翅部4211构造为大致与滑块第一面4201共面、向远离滑块42方向延伸的突出部，使滑块42沿第一槽311宽度延伸方向的最大宽度大于第一槽311的宽度。当滑块42安装在第二管体31上时，翅部4221与第二管体31的内周面接触，防止滑块42沿远离轴线L的方向脱离第一槽311。在本实施例中，翅部4221沿第一槽311长度延伸方向的两边缘设有翅部第一斜面4221a和翅部第二斜面4221b，翅部第一斜面4221a和翅部第二斜面4221b的厚度由中心向边缘逐渐减小。滑块第二面4202的大致几何中心位置设有第五连接部4203，第五连接部4203构造为凹槽，该凹槽的形状和大小与第二连接部412的形状和大小相适配。在本实施例中，第二连接部412能够插入第五连接部4203，当推钮41被使用者推动沿第二管体31的轴向滑动时，推钮41通过第二连接部412与第五连接部4203的配接，带动滑块42在第一槽311内滑动。
如图3、图7~图8、图17所示，锁块44安装在第三槽323内，可选择地沿伸缩管装置1的径向方向滑动。锁块44的本体具有朝向卡槽带22的锁块第一面，在本实施例中，锁块第一面平行地设有第一凸部4411和第二凸部4412。第一凸部4411和第二凸部4412构造为沿垂直于轴线L延伸方向延伸的条状凸起，第一凸部4411和第二凸部4422之间形成沿垂直于轴线L延伸方向延伸的条状的凹部442。第一凸部4411远离凹部442的一侧设有第一凸部斜面4411a，第二凸部4412远离凹部442的一侧设有第二凸部斜面4412a。如图14所示，当第一管组件2和第二管组件3没有相对滑动时，锁块44与卡槽带22卡合。具体地，第一凸部4411和第二凸部4412卡入相邻的两个锁槽22b中，而该相邻两个锁槽22b之间的槽间部22a卡入凹部442内。如果锁块44被限位，那么由于锁块44与卡槽带22之间的卡合，使第一管组件2和第二管组件3之间无法发生相对滑动。如果锁块44未被限位而能够沿伸缩管装置1的径向、向远离轴线L的方向滑动，使锁块44与卡槽带22脱开，则第一管组件2和第二管组件3之间就能够发生相对滑动。在其他实施例中，条状凸部也可以设置一个、三个或三个以上。锁块44的本体在垂直于轴线L延伸方向的两侧对称地设有凸边440，凸边440朝向远离锁块第一面的方向延伸。凸边440沿轴线Ｌ延伸方向的两端设有凸边第一斜面4401a和凸边第二斜面4401b。凸边第一斜面4401a的斜度与翅部第二斜面4221b的斜度向适配，凸边第二斜面4401b的斜度与翅部第一斜面4221a的斜度向适配。
所述操作单元4还包括至少一弹性件；当所述限位件偏离所述初始位置时，所述弹性件始终给予所述限位件拉力，使所述限位件具有朝向所述初始位置运动趋势的。在本实施例中，弹性件包括第一弹簧431和第二弹簧432。其中，第一弹簧431和第二弹簧432构造为规格相同的螺旋弹簧，第一弹簧431具有设置在其两端的第一弹簧第一连接部431a和第一弹簧第二连接部431b，第二弹簧432具有设置在其两端的第二弹簧第二连接部432a和第二弹簧第二连接部431b。第一弹簧第一连接部431a、第一弹簧第二连接部431b、第二弹簧第一连接部432a和第二弹簧第二连接部432b均构造为钩状结构。第一弹簧431设置在第一槽311内，且位于第一孔3121和第三连接部4211之间，第一弹簧第一连接部431a与第一孔3121连接，第一弹簧第二连接部341b与第三连接部4211连接。第二弹簧432设置在第一槽311内，且位于第二孔3122和第四连接部4212之间，第二弹簧第二连接部432a与第四连接部4212连接，第二弹簧第二连接部432b与第二孔3122连接。由于第一弹簧431和第二弹簧432的规格相同，所以滑块42将位于第一槽311的中心位置，即滑块42的初始位置。在本实施例中，当滑块42位于初始位置时，第一弹簧431和第二弹簧432处于拉伸状态，即第一弹簧431和第二弹簧432给予滑块42大小相等、方向相反的拉力。进一步优选的，当滑块42偏离初始位置时，第一弹簧431和第二弹簧432始终处于拉伸状态。
当所述伸缩管装置处于锁定状态时，所述限位件在初始位置，所述第一锁定件与所述第二锁定件之间保持卡合；当所述伸缩管装置处于至少一个释放状态时，所述限位件偏离初始位置，所述第一锁定件与所述第二锁定件之间解除卡合。
为方便描述，以附图中所示的方位对本实施例的伸缩管装置1的操作过程进行描述，下文中述及的“上”“下”“左”“右”均指图中显示的方位，并不对本发明的技术方案起限定作用。
在本实施例中，当滑块42位于初始位置时，如图10、图14、图17、图20、图21所示，滑块42与第三槽323位置相应，翅部4221抵靠凸边440，实现滑块44对锁块42的限位，使锁块42无法沿伸缩管装置1的径向向远离卡槽带22的方向滑动，锁块42与卡槽带22之间保持卡合状态，此时第一管组件2和第二管组件3之间无法实现相对滑动。
当没有操作时，伸缩管装置1保持锁定状态。当使用者需要收缩伸缩管装置1时，一手固定握住第一管组件2（通常握紧手柄组件5），一手推动推钮41使其向左（靠近第一管组件2的方向）滑动，如图11、图15、图22、图23所示。推钮41带动滑块42在第一槽311内向左滑动。在滑块42向左滑动的过程中，第一弹簧431对滑块42的拉力增大，第二弹簧432对滑块42的拉力减小，即第一弹簧431和第二弹簧432对滑块42的合力方向向右，且逐渐增大。在滑块42向左滑动的过程中，滑块42逐渐偏离其初始位置，同时逐渐将锁块44在第三槽322内向下滑动的路径让开。当推钮41向左滑动到左侧极限位置后（左侧极限位置可由推钮41的滑动连接结构限定，也可由滑块42的滑动连接结构限定，也可由第一槽311的长度限定，也可由第一弹簧431和第二弹簧432的最短长度限定），使用者继续向推钮41施加使其向左滑动的力，此时由于推钮41的滑动被限制，操作单元4将力传递给第二管组件3，使其具有沿轴线L向靠近手柄组件5方向滑动的趋势。由于此时锁块44的限位被解除，第一凸部4411和第二凸部4412的左侧面受到锁槽22b、槽间部22b的反作用力，使锁块44与卡槽带22之间的卡合解除，锁块44沿第三槽323向下滑动，使第一管组件2和第二管组件3之间可以相对滑动，伸缩管装置1处于第一释放状态。使用者继续对推钮41施加使其向左滑动的力，即可实现第一管组件2与第二管组件3之间相对收缩。当收缩到合适的长度时，使用者释放对推钮41的力，此时在第一弹簧431和第二弹簧432的作用下，滑块42向初始位置滑动，翅部第一斜面4221a对凸边第二斜面4401b施加向右的力，推动锁块44沿第三槽323向上滑动进而与卡槽带22卡合。当滑块42回到初始位置时，翅部4221抵靠凸边440，使锁块44保持与卡槽带22的卡合，伸缩管装置恢复到锁定状态。
当使用者需要伸长伸缩管装置1时，一手固定握住第一管组件2（通常握紧手柄组件5），一手推动推钮41使其向右（远离第一管组件2的方向）滑动，如图12、图16所示。推钮41带动滑块42在第一槽311内向右滑动。在滑块42向右滑动的过程中，第二弹簧432对滑块42的拉力增大，第一弹簧431对滑块42的拉力减小，即第一弹簧431和第二弹簧432对滑块42的合力方向向左，且逐渐增大。在滑块42向右滑动的过程中，滑块42逐渐偏离其初始位置，同时逐渐将锁块44在第三槽322内向下滑动的路径让开。当推钮41向右滑动到右侧极限位置后（右侧极限位置可由推钮41的滑动连接结构限定，也可由滑块42的滑动连接结构限定，也可由第一槽311的长度限定，也可由第一弹簧431和第二弹簧432的最短长度限定），使用者继续向推钮41施加使其向右滑动的力，此时由于推钮41的滑动被限制，操作单元4将力传递给第二管组件3，使其具有沿轴线L向远离手柄组件5方向滑动的趋势。由于此时锁块44的限位被解除，第一凸部4411和第二凸部4412的右侧面受到锁槽22a、22b的反作用力，使锁块44与卡槽带22之间的卡合解除，锁块44沿第三槽323向下滑动，使第一管组件2和第二管组件3之间可以相对滑动，伸缩管装置1处于第一释放状态。使用者继续对推钮41施加使其向右滑动的力，即可实现第一管组件2与第二管组件3之间相对伸长。当伸长到合适的长度时，使用者释放对推钮41的力，此时在第一弹簧431和第二弹簧432的作用下，滑块42向初始位置滑动，翅部第二斜面4221b对凸边第一斜面4401a施加向左的力，推动锁块44沿第三槽323向上滑动进而与卡槽带22卡合。当滑块42回到初始位置时，翅部4221抵靠凸边440，使锁块44保持与卡槽带22的卡合，伸缩管装置恢复到锁定状态。
使用本发明的伸缩管装置1，使用者只需向希望第二管组件3运动的方向持续推动推钮4，即可完成伸缩管装置1的伸缩作业。同时，本发明伸缩管装置1的操作单元4中利用拉簧，拉簧两端钩连在同一水平面的两端，一是不容易脱离其所在位置而发生错位，二是使拉簧的拉伸方向沿一条水平线，在回复力作用下产生相对的压缩，有回复到自然状态的趋势，不会出现使用压簧时容易出现的偏移弯折的失稳现象。同时拉簧本身细长的形状决定了其更适合伸缩管的锁定装置。再者，相较于压簧，拉簧的安装更加方便和快捷。
本发明还提供另一实施例，一种吸尘器，包括上述的伸缩管装置1。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。

Claims (18)

  1. 一种伸缩管装置，包括第一管组件、与所述第一管组件相对滑动连接的第二管组件和操作单元，所述操作单元设置在所述第一管组件与所述第二管组件的套接处；所述操作单元包括操作件、第一锁定件、第二锁定件和限位件；其中，
    所述第一锁定件设置在所述第一管组件上且包括至少两个锁定部；
    所述第二锁定件和限位件设置在所述第二管组件上，所述第二锁定件构造为可选择地抵靠所述第一锁定件的任一所述锁定部并与其卡合，以限制所述第一管组件与所述第二管组件之间的相对滑动；
    所述限位件构造为当所述伸缩管装置处于锁定状态时，所述限位件在初始位置，所述第一锁定件与所述第二锁定件之间保持卡合；当所述伸缩管装置处于至少一个释放状态时，所述限位件偏离所述初始位置，所述第一锁定件与所述第二锁定件之间解除卡合；
    所述操作单元还包括至少一弹性件；当所述限位件偏离所述初始位置时，所述弹性件给予所述限位件拉力，使所述限位件具有保持在所述初始位置的趋势。
  2. 如权利要求1所述的伸缩管装置，其特征是，当所述限位件位于所述初始位置或当所述限位件偏离所述初始位置时，所述弹性件始终给予所述限位件拉力，使所述限位件具有向所述初始位置运动的趋势。
  3. 如权利要求1所述的伸缩管装置，其特征是，所述弹性件为螺旋弹簧。
  4. 如权利要求1所述的伸缩挂装置，其特征是，所述第一管组件具有第一管体、与第二管组件套接的第一管第一端和与第一管第一端相对的第一管第二端；所述第二管组件具有第二管体、与第一管组件套接的第二管第二端和与第二管第二端相对的第二管第一端。
  5. 如权利要求4所述的伸缩管装置，其特征是，第一管第一端设有第一端套，第一端套与第二管组件配合限位，防止第一管组件与第二管组件在相对滑动时相互脱离；第一管第二端设有第二端套，第二端套连接手柄组件。
  6. 如权利要求4所述的伸缩管装置，其特征是，所述第二管第二端设有与第二管体固定连接的衬管，所述衬管套设在第二管体靠近第二管第二端的内侧，且衬管的外径小于第二管体的内径。
  7. 如权利要求6所述的伸缩管装置，其特征是，所述衬管具有靠近第二管第二端的衬管第二端和与衬管第二端相对的衬管第一端，衬管的外周面设有沿其轴向方向延伸的配合面,配合面靠近衬管第一端的一端设有第二槽，第二槽构造为大致呈矩形的非贯通槽，第二槽的底面与配合面相平行但不在同一平面上。
  8. 如权利要求7所述的伸缩管装置，其特征是，所述第二槽的底面设有第三槽，第三槽构造为贯穿第二槽底面的通槽，且相对于第二槽靠近衬管第二端的一端，第三槽距离第二槽靠近衬管第一端的一端更近，当第一管组件和第二管组件相对滑动时，第三槽始终对应所述第一锁定件。
  9. 如权利要求4所述的伸缩管装置，其特征是，所述第二管体上设有第一槽，所述第一槽靠近第二管第二端，构造为贯穿第二管体的长形通槽，且第一槽的长度延伸方向与轴线L的延伸方向一致。
  10. 如权利要求9所述的伸缩管装置，其特征是，所述操作件构造为推钮，推钮设有推钮主体，所述推钮主体的形状与第二管体外周面相适配，推钮主体朝向第二管体的面大致中心位置设有第二连接部，所述第二锁定件固定连接于所述第二连接部；在推钮主体的滑动过程中，第二连接部始终在第一槽的范围内。
  11. 如权利要求9所述的伸缩管装置，其特征是，所述限位件构造为滑块，所述滑块能嵌在第一槽内，并沿第一槽的长度方向滑动。
  12. 如权利要求9所述的伸缩管装置，其特征是，所述第二锁定件构造为锁块，所述锁块安装在第三槽内，可以选择地沿伸缩管装置的径向方向滑动，当第一管组件和第二管组件没有相对滑动时，锁块与所述第一锁定件卡合，使第一管组件和第二管组件之间无法发生相对滑动。
  13. 如权利要求9所述的伸缩管装置，其特征是，所述弹性件包括第一弹簧和第二弹簧，第一弹簧和第二弹簧为规格相同的螺旋弹簧，第一弹簧和第二弹簧设置在第一槽内，第一弹簧和第二弹簧设在限位件两侧，使限位件位于第一槽的中心位置，所述中心位置即为限位件的初始位置。
  14. 如权利要求13所述的伸缩管装置，其特征是，在限位件位于初始位置时，第一弹簧和第二弹簧处于拉伸状态；在限位件偏离初始位置时，第一弹簧和第二弹簧始终处于拉伸状态。
  15. 如权利要求9任意一项所述的伸缩管装置，其特征是，所述第一锁定件构造为条状的卡槽带，所述锁定部为设置在所述卡槽带上、基本沿轴线L的延伸方向排列的至少两个锁槽，所述轴线L的延伸方向是第一管组件和第二管组件的径向方向。
  16. 如权利要求15所述的伸缩管装置，其特征是，两相邻所述锁槽之间形成槽间部，所述卡槽带具有第一面、以及与所述第一面相对的基本平行的第二面，所述卡槽带的第二面与第一管体的外周面贴合。
  17. 如权利要求9所述的伸缩管装置，其特征是，所述第二管体与衬管固定连接，且第三槽的位置与第一槽的中心大致对应，第二槽的位置与第一槽的位置大致对应，且第二槽的长度延伸方向与第一槽的长度延伸方向相同。
  18. 一种吸尘器，其特征是，所述吸尘器包括如权利要求1~17任意一项所述的伸缩管装置。
PCT/CN2018/099546 2017-08-09 2018-08-09 一种伸缩管装置及具有其的吸尘器 WO2019029603A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/634,660 US11399681B2 (en) 2017-08-09 2018-08-09 Telescopic tube device and vacuum cleaner having same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201710674031 2017-08-09
CN201710674031.9 2017-08-09
CN201711454596.2 2017-12-28
CN201711454596.2A CN109381109A (zh) 2017-08-09 2017-12-28 一种伸缩管装置及具有其的吸尘器

Publications (1)

Publication Number Publication Date
WO2019029603A1 true WO2019029603A1 (zh) 2019-02-14

Family

ID=65273273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/099546 WO2019029603A1 (zh) 2017-08-09 2018-08-09 一种伸缩管装置及具有其的吸尘器

Country Status (1)

Country Link
WO (1) WO2019029603A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552481A1 (de) * 1992-01-11 1993-07-28 Carl Froh GmbH & Co Teleskopierbares Staubsauger-Saugrohr
CN2449639Y (zh) * 2000-09-30 2001-09-26 徐为尔 吸尘器用的伸缩吸尘管
US6513191B1 (en) * 1999-12-11 2003-02-04 Kwang Dong Precision Co., Ltd. Device for adjusting suction pipe length of a vacuum cleaner
CN201870570U (zh) * 2010-11-25 2011-06-22 伸兴工业股份有限公司 吸尘器伸缩管装置
CN103263236A (zh) * 2013-05-16 2013-08-28 邬永龙 可双向伸缩的吸尘管

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552481A1 (de) * 1992-01-11 1993-07-28 Carl Froh GmbH & Co Teleskopierbares Staubsauger-Saugrohr
US6513191B1 (en) * 1999-12-11 2003-02-04 Kwang Dong Precision Co., Ltd. Device for adjusting suction pipe length of a vacuum cleaner
CN2449639Y (zh) * 2000-09-30 2001-09-26 徐为尔 吸尘器用的伸缩吸尘管
CN201870570U (zh) * 2010-11-25 2011-06-22 伸兴工业股份有限公司 吸尘器伸缩管装置
CN103263236A (zh) * 2013-05-16 2013-08-28 邬永龙 可双向伸缩的吸尘管

Similar Documents

Publication Publication Date Title
US7729122B2 (en) Fastener for heat sinks
US6338586B1 (en) Locking structure of retractable draw bar
US20120301244A1 (en) Floating fastener
US10040177B2 (en) Socket wrench
JPH0774676B2 (ja) 継 手
US20070240545A1 (en) Positioning device for retractable handle of hand tool
WO2019029603A1 (zh) 一种伸缩管装置及具有其的吸尘器
WO2018086134A1 (zh) 一种弹簧拉头
TWI419776B (zh) 工具握柄形變定位裝置
WO2024032458A1 (zh) 连接接头
US9917398B1 (en) Mechanical snap connector assembly
US11399681B2 (en) Telescopic tube device and vacuum cleaner having same
US20180038545A1 (en) Tube devices and tripods
US20070189847A1 (en) Quick release device for extension rod
US8286317B2 (en) Clutching jig
EP3591501A1 (en) Hard disk assembly device
CN211039297U (zh) 一种阻尼缩杆
US2360485A (en) Coupling
TWM590516U (zh) 機械手臂與手術器械之快速組拆裝置
US3073626A (en) Hose coupling for suction cleaning apparatus
TWM567164U (zh) 滑桿結構
US9901146B2 (en) Zip slider structure
TWM573684U (zh) Socket tool
TWM530222U (zh) 接桿工具之快脫結構
US6267031B1 (en) Tool for engaging sockets

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18844102

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18844102

Country of ref document: EP

Kind code of ref document: A1