WO2021004271A1 - Structure de verrouillage d'élément de tige télescopique - Google Patents

Structure de verrouillage d'élément de tige télescopique Download PDF

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Publication number
WO2021004271A1
WO2021004271A1 PCT/CN2020/097789 CN2020097789W WO2021004271A1 WO 2021004271 A1 WO2021004271 A1 WO 2021004271A1 CN 2020097789 W CN2020097789 W CN 2020097789W WO 2021004271 A1 WO2021004271 A1 WO 2021004271A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
wrench
inner rod
locking structure
block
Prior art date
Application number
PCT/CN2020/097789
Other languages
English (en)
Chinese (zh)
Inventor
张巨鸿
Original Assignee
嘉兴捷顺旅游制品有限公司
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
Application filed by 嘉兴捷顺旅游制品有限公司 filed Critical 嘉兴捷顺旅游制品有限公司
Publication of WO2021004271A1 publication Critical patent/WO2021004271A1/fr

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
    • A47L1/00—Cleaning windows
    • A47L1/06—Hand implements
    • 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
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • 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
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/42—Details

Definitions

  • the utility model relates to the field of household cleaning appliances, in particular to a locking structure of a telescopic rod.
  • the handle is designed as Variable length form.
  • the disclosed structure for adjusting the length of the handle bar includes an outer tube and an inner tube, and the outer tube and the inner tube are sleeved.
  • the lock sleeve is fixedly connected with the outer tube, and the lock sleeve is provided with a locking mechanism that can lock the relative displacement of the outer tube and the inner tube.
  • the locking mechanism includes a trigger, the trigger is hinged with the lock sleeve, the trigger is provided with a compression block, and the lock sleeve is provided with a hole for the compression block to penetrate; when the trigger is pushed, the compression block abuts the inner tube through the hole, This completes the relative fixation between the outer tube and the inner tube.
  • hinged pulling the pulling force is uneven, and the hinged shaft is easily damaged.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art, and provide a locking structure of the telescopic rod, so that the locking and unlocking forces of the telescopic rod are balanced, and the service life of the locking structure is prolonged.
  • the technical solution adopted by the present utility model to solve the above-mentioned problems is to provide a locking structure of a telescopic rod, which is used between an axially expandable inner rod and an outer rod, and the outer rod and the inner rod are sleeved with each other;
  • the shaft sleeve is provided with a through hole; the end of the outer rod connected to the inner rod is fixed in the through hole; the side wall of the shaft sleeve is provided with a shaft hole communicating with the through hole, and the shaft hole faces the Inner rod
  • a wrench which is rotatably connected with the shaft sleeve at the shaft hole, and is formed with a pressing block received in the shaft hole and facing the inner rod;
  • the pressure block presses or moves away from the inner rod; the pressure block presses the inner rod so that the telescopic state between the inner rod and the outer rod is locked, the The pressing block is far away from the inner rod so that the telescopic state between the inner rod and the outer rod is unlocked.
  • the through hole includes a large-diameter section and a small-diameter section, the large-diameter section matches the outer diameter of the outer rod, and the small-diameter section matches the outer diameter of the inner rod; the small-diameter section The inner diameter is smaller than the outer diameter of the outer rod.
  • the pressure block and the sleeve are circumferentially defined, and the pressure block is formed with a pressure surface facing the inner rod and matching the outer surface of the inner rod.
  • the sleeve is formed with a locking groove
  • the pressing block is formed with a protrusion in the circumferential direction; the protrusion extends into the locking groove and is restricted by the locking groove.
  • the wrench is threadedly connected with the shaft sleeve; when the wrench and the shaft sleeve rotate with the threads, the pressure block is away from or presses the inner rod.
  • the wrench is provided with a push block, and the push block abuts against the pressure block; the pressure block forms an inclined surface toward the push block; the inclined surface is a curved surface or a flat surface; when the wrench rotates, the push block The conflicting part with the pressure block gradually changes with the inclined surface, and the pressure block presses or moves away from the inner rod.
  • a circumferential limit structure is provided between the shaft sleeve and the wrench to limit the relative rotation between the wrench and the shaft sleeve.
  • the relative rotation angle between the wrench and the sleeve is ⁇ 90°.
  • the sleeve is formed with an open neck screwed to the wrench;
  • the circumferential limiting structure includes limiting ribs provided on the outer wall and/or inner wall of the open neck, and limiting ribs provided on the wrench Block; the limit block rotates with the wrench to abut the limit rib, and the wrench completes the rotation.
  • the locking structure of the telescopic rod provided by the utility model locks or unlocks the expansion and contraction of the rod through the rotation of the wrench, and the structure is simple; and the circumferential rotation of the wrench relative to the shaft hole makes the unlocking or locking force balanced.
  • Figure 1 is an exploded schematic diagram of the locking structure of the telescopic rod of the present invention
  • Figure 2 is a schematic diagram of the wrench in the direction A in Figure 1;
  • Figure 3 is a sectional view of the locking structure of the telescopic rod of the present invention when the inner rod and the outer rod are locked;
  • the locking structure of the telescopic rod of the present invention is used between the inner rod 1 and the outer rod 2 that are axially extendable.
  • the outer rod 2 and the inner rod 1 are sleeved with each other.
  • the locking structure of the telescopic rod includes a shaft sleeve 3 and a wrench 4.
  • the sleeve 3 is provided with a through hole 37.
  • the end of the outer rod 2 connected to the inner rod 1 is fixed in the through hole 37.
  • the shaft sleeve 3 is fixed to the outer rod 2.
  • the side wall of the sleeve 3 is provided with a shaft hole 33 communicating with the through hole 37.
  • the shaft hole 33 faces the inner rod 1.
  • the axis of the shaft hole 33 is perpendicular to the axis of the inner rod 1.
  • the wrench 4 is rotatably connected with the shaft sleeve 3 at the shaft hole 33, and a pressing block 43 extending into the shaft hole 33 and facing the inner rod 1 is formed.
  • the pressing block 43 presses or moves away from the inner rod 1.
  • the pressing block 43 presses the inner rod 1 so that the telescopic state between the inner rod 1 and the outer rod 2 is locked.
  • the pressing block 43 is far away from the inner rod 1 so that the telescopic state between the inner rod 1 and the outer rod 2 is unlocked, and thus, the inner rod 1 and the outer rod 2 can be telescoped with each other.
  • the “distance” mentioned here refers to the "compression” state.
  • the retractable state between the inner rod 1 and the outer rod 2 is locked during cleaning work or storage, so that the total length of the inner rod 1 and the outer rod 2 is fixed; at the same time, it can be unlocked
  • the retractable state between the inner rod 1 and the appearance 2 allows the distance between the inner rod 1 and the outer rod 2 to be adjusted according to the use occasion of the household cleaning tool, or the height and needs of the user.
  • the utility model can be completed by the cooperation of the shaft sleeve 3 and the wrench 4, and has a simple structure.
  • the running track of the wrench 4 is to rotate in the circumferential direction of the shaft hole 33, so that when the wrench 4 is pulled, the force is balanced, and the use comfort is also improved.
  • the shaft sleeve 3 and the outer rod 2 can be in various fixing forms commonly used by those skilled in the art, such as screw connection, fastener fixing, pin connection, expansion connection, etc.
  • the through hole 37 includes a large diameter section 31 and a small diameter section 32.
  • the large diameter section 31 matches the outer diameter of the outer rod 2
  • the small diameter section 32 matches the outer diameter of the inner rod 1.
  • the diameter of the small-diameter section 32 is smaller than the outer diameter of the outer rod 2.
  • the outer rod 2 is limited to the large diameter section 31.
  • the pressing block 43 is circumferentially defined and arranged with the sleeve 3, and the pressing block 43 is formed with a pressing surface 41 facing the inner rod 1 and matching the outer surface of the inner rod 1.
  • the inner rod 1 is a circular tube, and the pressing surface 41 is an arc shape matching the outer circumference of the inner rod 1. Therefore, the contact area between the pressing surface 41 and the outer surface of the inner rod 1 can be increased.
  • the pressing block 43 presses the inner rod 1 the force between the two is more balanced, and the force-bearing part is not easily damaged. The service life of the inner rod 1.
  • the pressure block 43 and the shaft sleeve 3 are arranged in a circumferential direction, which may be: the shaft sleeve 3 is formed with a clamping groove 34, and the pressure block 43 is circumferentially formed with a protrusion 43a.
  • the protrusion 43a extends into the slot 34 and is limited by the slot 34, as shown in FIG. 1.
  • the slot 34 is provided in the axial direction of the pressure block 43, and the protrusion 43a is provided in the sleeve 3. This simple deformation falls within the protection scope of the present invention.
  • the wrench 4 and the sleeve 3 are threadedly connected.
  • the shaft sleeve 3 is provided with an external thread
  • the wrench 4 is provided with an internal thread matching the external thread
  • the wrench 4 is screwed on the shaft sleeve 3; or, the wrench 4 is provided with an external thread, and the shaft sleeve 3 is provided with a matching external thread.
  • Internal thread the wrench 4 is screwed into the sleeve 3.
  • the pressing block 43 moves away from or presses the inner rod 1.
  • the form of the thread serves two purposes, and it can be used as a connection structure between the wrench 4 and the sleeve 3; at the same time, the inclination of the thread itself is effectively used without the need for another structure to keep the pressure block 43 away from or press the inner rod 1.
  • the wrench 4 has a push block 42 formed at the shaft hole 33, and the push block 42 abuts against the pressing block 43.
  • the pressing block 43 forms a slope toward the pushing block 42.
  • the inclined surface can be curved or inclined.
  • the pressure block 43 forms a groove facing the push block 42, and the side walls of the groove are symmetrical inclined surfaces.
  • the pressing block 43 and the pushing block 42 are arranged separately, and the processing of each part is simpler, which is suitable for actual mass production.
  • the wrench 4 rotates, the contact portion between the push block 42 and the pressure block 43 gradually changes with the inclined surface.
  • the push block 42 presses against the push block 43 to press the inner rod 1; or, the push block 42 relaxes the pressing force against the pressure block 43, and the pressing force of the press block 43 on the inner rod 1 decreases accordingly.
  • a circumferential limit structure is provided between the shaft sleeve 3 and the wrench 4 to limit the relative rotation between the wrench 4 and the shaft sleeve 3.
  • the relative rotation angle between the wrench 4 and the shaft sleeve 3 is ⁇ 90°. Therefore, excessive rotation of the wrench 4 is prevented, and the service life of the locking structure is prolonged.
  • the shaft sleeve 3 is formed with an open neck that is screwed to the wrench 4 at the shaft hole 33.
  • the circumferential limiting structure includes limiting ribs arranged on the outer wall and/or inner wall of the opening neck, and limiting blocks 44 arranged on the wrench. The limit block 44 rotates with the wrench 4 to abut the limit rib, and the wrench 4 completes the rotation.
  • the limiting rib 36 is provided on the inner wall of the opening neck, and the wrench 4 is provided with a limiting block 44 matching the second limiting rib 36.
  • the limiting rib 36 and the limiting block 44 abut against each other, so that the wrench 4 cannot rotate further relative to the sleeve 3, and the position is limited.
  • the outer wall of the open neck is provided with an external thread that matches the screw connection of the wrench 4, and the external thread is provided with a limiting rib 35. Therefore, when the threaded end of the wrench 4 (that is, the limit block on the outer wall side of the open neck) of the wrench 4 is correspondingly rotated to the limit rib 35, it is abutted, so that the wrench 4 cannot rotate further relative to the sleeve 3, and obtain Limit.
  • the wrench 4 is limited in both rotation directions, that is, it receives the rotation limit when it is locked and unlocked, thereby further preventing the wrench 4 from being locked. Excessive rotation.
  • the limit in the two directions can also be realized by setting both the limit ribs on the inside of the opening neck or both the limit ribs on the outside of the opening neck.

Landscapes

  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

La présente invention concerne une structure de verrouillage d'un élément de tige télescopique, la structure de verrouillage étant utilisée entre une tige interne (1) et une tige externe (2) qui sont axialement télescopiques, la tige externe (2) et la tige interne (1) étant agencées de manière mutuellement intégrée. La structure de verrouillage comprend : un manchon d'arbre (3) pourvu d'un trou traversant (37), la partie d'extrémité du côté, relié à la tige interne (1), de la tige externe (2) étant fixée dans le trou traversant (37), la paroi latérale du manchon d'arbre (3) étant pourvue d'un trou d'arbre (33) en communication avec le trou traversant (37), et le trou d'arbre (33) faisant face à la tige interne (1) ; et une clé (4) reliée de façon rotative au manchon d'arbre (3) au niveau du trou d'arbre (33) et pourvue d'un bloc de pressage (43) logé dans le trou d'arbre (33) et faisant face à la tige interne (1). Lorsque la clé (4) tourne dans la direction circonférentielle le long du trou d'arbre (33), le bloc de pressage (43) presse sur la tige interne (1) ou s'éloigne de celle-ci ; et le bloc de pressage (43) presse sur la tige interne (1), de sorte qu'un état dans lequel la tige interne (1) et la tige externe (2) sont télescopiques peut réaliser un verrouillage, et le bloc de pressage (43) est éloigné de la tige interne (1), de sorte que l'état dans lequel la tige interne (1) et la tige externe (2) sont télescopiques peut réaliser un déverrouillage. La structure est simple, et l'application de force est équilibrée pendant le verrouillage et le déverrouillage.
PCT/CN2020/097789 2019-07-10 2020-06-23 Structure de verrouillage d'élément de tige télescopique WO2021004271A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921075882.2 2019-07-10
CN201921075882.2U CN211093838U (zh) 2019-07-10 2019-07-10 伸缩杆件的锁定结构

Publications (1)

Publication Number Publication Date
WO2021004271A1 true WO2021004271A1 (fr) 2021-01-14

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Application Number Title Priority Date Filing Date
PCT/CN2020/097789 WO2021004271A1 (fr) 2019-07-10 2020-06-23 Structure de verrouillage d'élément de tige télescopique

Country Status (2)

Country Link
CN (1) CN211093838U (fr)
WO (1) WO2021004271A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117553076A (zh) * 2024-01-09 2024-02-13 沧州天硕联轴器有限公司 一种离合联轴器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201423634Y (zh) * 2009-06-04 2010-03-17 尹建兰 伸缩杆
TWM377954U (en) * 2009-06-06 2010-04-11 Tuo Dih Shen Internat Corp Rotation locking structure of telescopic rod of mop
KR20100012455U (ko) * 2009-06-06 2010-12-15 투오 쉔 인터내셔널 코퍼레이션 리미티드 자루걸레의 텔레스코픽 로드의 회전 잠금 메커니즘
CN201929911U (zh) * 2011-02-18 2011-08-17 李爱良 伸缩拖把柄的锁定结构
CN202376037U (zh) * 2011-10-31 2012-08-15 朱振纲 可自动脱水的拖把
CN203369865U (zh) * 2013-04-27 2014-01-01 林辉 拖把
CN205117917U (zh) * 2015-10-30 2016-03-30 四川鸿昌塑胶工业有限公司 一种用于伸缩杆的锁紧装置
CN106725153A (zh) * 2016-12-12 2017-05-31 曹恒 一种拖把柄的伸缩结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201423634Y (zh) * 2009-06-04 2010-03-17 尹建兰 伸缩杆
TWM377954U (en) * 2009-06-06 2010-04-11 Tuo Dih Shen Internat Corp Rotation locking structure of telescopic rod of mop
KR20100012455U (ko) * 2009-06-06 2010-12-15 투오 쉔 인터내셔널 코퍼레이션 리미티드 자루걸레의 텔레스코픽 로드의 회전 잠금 메커니즘
CN201929911U (zh) * 2011-02-18 2011-08-17 李爱良 伸缩拖把柄的锁定结构
CN202376037U (zh) * 2011-10-31 2012-08-15 朱振纲 可自动脱水的拖把
CN203369865U (zh) * 2013-04-27 2014-01-01 林辉 拖把
CN205117917U (zh) * 2015-10-30 2016-03-30 四川鸿昌塑胶工业有限公司 一种用于伸缩杆的锁紧装置
CN106725153A (zh) * 2016-12-12 2017-05-31 曹恒 一种拖把柄的伸缩结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117553076A (zh) * 2024-01-09 2024-02-13 沧州天硕联轴器有限公司 一种离合联轴器
CN117553076B (zh) * 2024-01-09 2024-03-12 沧州天硕联轴器有限公司 一种离合联轴器

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