CN113375014B - Locking device and telescopic bracket - Google Patents

Locking device and telescopic bracket Download PDF

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Publication number
CN113375014B
CN113375014B CN202010564694.7A CN202010564694A CN113375014B CN 113375014 B CN113375014 B CN 113375014B CN 202010564694 A CN202010564694 A CN 202010564694A CN 113375014 B CN113375014 B CN 113375014B
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CN
China
Prior art keywords
connecting rod
lever arm
adjusting
locking device
sleeve
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Application number
CN202010564694.7A
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Chinese (zh)
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CN113375014A (en
Inventor
王志远
张俊茂
于定管
朱英辉
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Shenzhen Bifoxs Industrial Design Co ltd
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Shenzhen Bifoxs Industrial Design Co ltd
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Priority to CN202010564694.7A priority Critical patent/CN113375014B/en
Publication of CN113375014A publication Critical patent/CN113375014A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/32—Undercarriages for supports with three or more telescoping legs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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

Abstract

The invention belongs to the technical field of photogrammetry accessories, and particularly relates to a locking device and a telescopic bracket. The locking device includes: the guide structure comprises a guide sleeve, a locking opening penetrating to the external space is formed in the inner wall of the guide sleeve, one end of the guide sleeve is used for sliding insertion of the inner sleeve, and the other end of the guide sleeve is connected with the positioning tube; and the locking structure comprises a connecting rod mechanism which is arranged in a sliding manner relative to the positioning pipe and a pressing mechanism which is connected with the guiding structure, wherein the connecting rod mechanism and the guiding sleeve are respectively positioned at two ends of the positioning pipe, the pressing mechanism comprises a lever arm and a pressing disc, the lever arm is rotationally connected with the side surface of the guiding sleeve, the connecting rod mechanism is rotationally connected with one end of the lever arm, and the other end of the lever arm extends to the locking opening and is connected with the pressing disc. The invention can effectively lock the positioning tube and the inner sleeve.

Description

Locking device and telescopic bracket
Technical Field
The invention belongs to the technical field of photogrammetry accessories, and particularly relates to a locking device and a telescopic bracket.
Background
At present, when instruments such as measuring instruments, video cameras and cameras are operated outdoors, a fixing support is needed, and in order to facilitate disassembly and assembly, the fixing support in the market is designed to be freely telescopic. Taking a tripod as an example, each support leg is provided with a plurality of telescopic pipes which are sequentially sleeved, and two adjacent telescopic pipes can freely stretch so as to ensure adaptation to various terrains and adjust the visual angles of instruments such as measuring instruments, video cameras, cameras and the like.
In order to ensure that the distance of the folded tripod is as short as possible, the automatic telescopic tubes are generally arranged into three sections, and after the sleeving positions of two adjacent telescopic tubes are adjusted to be in place, the two adjacent telescopic tubes are required to be fixed in position, so that the follow-up measurement or photography is convenient.
Disclosure of Invention
An aim of the embodiment of the application is to provide a locking device, which aims at solving the problem of locking the connection position of two sections of telescopic pipes.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows: there is provided a locking device for locking the connection of an inner sleeve and a positioning tube, wherein the inner sleeve and the positioning tube are coaxially arranged, the locking device comprising:
the guide structure comprises a guide sleeve, a locking opening penetrating to an external space is formed in the inner wall of the guide sleeve, one end of the guide sleeve is used for the inner sleeve to be inserted in a sliding mode, and the other end of the guide sleeve is connected with the positioning tube; and
the locking structure comprises a connecting rod mechanism and a pressing mechanism, wherein the connecting rod mechanism is arranged in a sliding manner relative to the positioning tube, the pressing mechanism is connected with the guiding mechanism, the connecting rod mechanism and the guiding sleeve are respectively located at two ends of the positioning tube, the pressing mechanism comprises a lever arm and a pressing disc, the lever arm is rotationally connected with the side surface of the guiding sleeve, the connecting rod mechanism is rotationally connected with one end of the lever arm, the other end of the lever arm extends to the locking opening and is connected with the pressing disc, and the connecting rod mechanism axially slides along the positioning tube under the action of external force and drives the lever arm to rotate so that the pressing disc is rotationally pressed in the guiding sleeve towards the locking opening.
In one embodiment, the link mechanism comprises a link base slidably connected with the positioning tube and a link slide slidably connected with the link base, the locking structure further comprises an adjusting mechanism for adjusting and positioning the connection position of the link base and the link slide, and one end of the link slide is connected with the lever arm.
In one embodiment, the connecting rod base includes sliding connection the bottom plate of locating tube and connect the end of bottom plate and set up the bottom block of adjustment tank, the regulation hole has been seted up to the cell wall of adjustment tank, the route of regulation hole is followed the axial setting of locating tube, adjustment mechanism including set up in adjusting gear in the adjustment tank, be located the adjustment tank and with adjusting gear engaged adjusting screw and one end are connected adjusting gear's adjusting bolt, adjusting bolt's the other end wear to establish the regulation hole and with connecting rod slide threaded connection, connecting rod slide sliding connection the bottom plate.
In one embodiment, the connecting rod sliding seat comprises a sliding plate which is slidably connected with the bottom plate and is arranged in a stacked mode, and a connecting rod, one end of the connecting rod is rotatably connected with the sliding plate, the other end of the connecting rod is rotatably connected with the lever arm, a threaded hole is formed in one end of the sliding plate, and the adjusting bolt is screwed into the threaded hole.
In one embodiment, the link mechanism further comprises a limiting plate opposite to the sliding plate and arranged in a gap, the length direction of the limiting plate is perpendicular to the moving direction of the sliding plate, and two ends of the limiting plate are fixedly connected with external structural members.
In one embodiment, the lever arm is provided with a waist-shaped hole, the link mechanism further comprises a connecting pin, one end of the connecting pin is connected with the connecting rod, and the other end of the connecting pin slides and is arranged in the waist-shaped hole in a clearance mode.
In one embodiment, the guide structure further comprises guide plates, the guide plates are connected with the side surfaces of the guide sleeve, two guide plates are arranged at intervals, and one end of the connecting rod is located between the two guide plates.
In one embodiment, the pressing mechanism further comprises a rotating pin, a rotating hole is formed in the side surface of the guide sleeve, one end of the rotating pin is connected with the lever arm, and the other end of the rotating pin is rotatably arranged in the rotating hole.
In one embodiment, the point of rotation of the linkage mechanism and the lever arm is located between the point of rotation of the lever arm and the guide sleeve and the pinch roller, and the distance from the point of rotation of the linkage mechanism and the lever arm to the point of rotation of the lever arm and the guide sleeve is less than the distance from the point of rotation of the linkage mechanism and the lever arm to the pinch roller.
It is a further object of the present application to provide a telescopic bracket comprising a locking device as described above.
The beneficial effects of this application lie in: the lever arm rotates by driving the connecting rod mechanism to slide along the axial direction of the positioning tube for a preset distance, and the lever arm drives the pressing disc to press the inner sleeve at the locking port in the rotating process, so that the inner sleeve and the positioning tube are kept relatively fixed and connected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective structure diagram of a telescopic bracket according to an embodiment of the present application;
FIG. 2 is an exploded schematic view of the foot of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a partial enlarged view at B of FIG. 2;
FIG. 5 is a perspective view of the lever arm of FIG. 4;
FIG. 6 is a further exploded pictorial view of FIG. 2;
FIG. 7 is a partial enlarged view at C of FIG. 6;
FIG. 8 is a perspective view of the rotary drum;
FIG. 9 is a perspective view of the linkage mechanism;
fig. 10 is a perspective view of the power structure of fig. 2.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 and 3, an embodiment of the present application provides a locking device for locking a connection between an inner sleeve 203 and a positioning tube 202, wherein the inner sleeve 203 and the positioning tube 202 are coaxially disposed. The locking device includes a guide structure 50 and a locking structure 40. The guide structure 50 comprises a guide sleeve 51, the guide sleeve 51 being arranged coaxially with the inner sleeve 203 or the positioning tube 202. Referring to fig. 4 and 6, a locking opening 511 penetrating into the outer space is formed in the inner wall of the guide sleeve 51, one end of the guide sleeve 51 is provided for sliding insertion of the inner sleeve 203, the other end of the guide sleeve 51 is connected to the positioning tube 202, and the inner sleeve 203 can pass through the guide sleeve 51 and retract into the positioning tube 202. The locking structure 40 comprises a link mechanism 41 slidably arranged relative to the positioning tube 202 and a pressing mechanism 48 connected with the guiding structure 50, the link mechanism 41 and the guiding sleeve 51 are respectively positioned at two ends of the positioning tube 202, the pressing mechanism 48 comprises a lever arm 481 and a pressing disc 482, the lever arm 481 is rotationally connected with the side surface of the guiding sleeve 51, the link mechanism 41 is rotationally connected with one end of the lever arm 481, the other end of the lever arm 481 extends to the locking opening 511 and is connected with the pressing disc 482, the link mechanism 41 slides along the axial direction of the positioning tube 202 under the action of external force and drives the lever arm 481 to rotate, so that the pressing disc 482 presses the positioning tube 202 in the guiding sleeve 51 at the locking opening 511.
By driving the link mechanism 41 to slide a predetermined distance in the axial direction of the positioning tube 202, the lever arm 481 is rotated, and the lever arm 481 drives the pressing plate 482 to press the inner sleeve 203 at the locking port 511 during rotation, thereby keeping the inner sleeve 203 and the positioning tube 202 relatively fixed.
It will be appreciated that the positional relationship between the two points of rotation of the linkage 41 and the lever arm 481, and the point of rotation of the lever arm 481 and the guide sleeve 51, determines the sliding direction of the linkage 41.
In one embodiment, the link mechanism 41 includes a link base 411 slidably disposed with respect to the positioning tube 202 and a link slider 412 slidably coupled to the link base 411, and the locking structure 40 further includes an adjusting mechanism for adjusting and positioning a connection position of the link base 411 and the link slider 412, and one end of the link slider 412 is coupled to the lever arm 481. Alternatively, the connection position of the link slider 412 and the link base 411 may be adjusted by the adjusting mechanism, so that the length of the link mechanism 41 along the axial direction of the positioning tube 202 is changed, thereby causing the rotating rod 421 to rotate, and further adjusting the initial position of the pressing plate 482 relative to the inner wall of the positioning tube 202. Thereby can adjust the tight degree that compresses tightly the interior sleeve 203 of clamp plate 482, when clamp plate 482 takes place wearing and tearing, through adjusting the initial position of clamp plate 482, can improve the locking performance of clamp plate 482, and need not to change clamp plate 482, adjustment process is simple and convenient.
Optionally, the hold-down plate 482 is removably coupled to the lever arm 481 to facilitate replacement of the hold-down plate 482.
Optionally, a wear pad 424 of wear resistant material is also provided on the pressure plate 482, the wear pad 424 abutting and pressing against the side surface of the inner sleeve 203.
Referring to fig. 7 and 9, in one embodiment, the link base 411 includes a bottom plate 414 slidably connected to the positioning tube 202 and a bottom block 413 connected to one end of the bottom plate 414 and provided with an adjusting slot 4131, the slot wall of the adjusting slot 4131 is provided with an adjusting hole, the path of the adjusting hole is arranged along the axial direction of the positioning tube 202, the adjusting mechanism includes an adjusting gear 441 disposed in the adjusting slot 4131, an adjusting screw 442 disposed in the adjusting slot 4131 and meshed with the adjusting gear 441, and an adjusting bolt 443 having one end connected to the adjusting gear 441, the other end of the adjusting bolt 443 is threaded through the adjusting hole and connected to the link slider 412, and the link slider 412 is slidably connected to the bottom plate 414. Alternatively, the adjusting gear 441 and the adjusting screw 442 are rotatably disposed in the adjusting groove 4131, the adjusting screw 442 is axially perpendicular to the positioning tube 202, and by applying a torque on the adjusting screw 442, the adjusting gear 441 is driven to rotate, the adjusting gear 441 drives the adjusting bolt 443 to rotate, the adjusting bolt 443 converts the rotation of the adjusting bolt 443 into a linear motion of the link sliding seat 412, and the link sliding seat 412 drives the lever arm 481 to rotate, so as to adjust the initial position of the pressing disc 482.
Referring to fig. 4-6, in one embodiment, the link slider 412 includes a slide plate 415 slidably coupled to a base plate 414 and arranged in a stack, and a link 416 having one end pivotally coupled to the slide plate 415 and the other end pivotally coupled to a lever arm 481. The other end of the sliding plate 415 is provided with a threaded hole, and the adjusting bolt 443 is screwed into the threaded hole.
In one embodiment, the link mechanism 41 further includes a limiting plate 418 opposite to the sliding plate 415 and disposed in a gap, the length direction of the limiting plate 418 is perpendicular to the moving direction of the sliding plate 415, and two ends of the limiting plate 418 are fixedly connected to external structural members. The stop plate 418 serves to ensure that the slide plate 415 slides smoothly with the base plate 414 without disengagement.
In one embodiment, lever arm 481 has a kidney-shaped aperture 419 formed therein, and link mechanism 41 further includes a connecting pin having one end connected to link 416 and the other end slidably disposed in kidney-shaped aperture 419.
In one embodiment, the guiding structure 50 further includes guiding plates 52, the guiding plates 52 are connected to the side surfaces of the guiding sleeve 51 and are arranged at intervals, and one end of the connecting rod 416 is located between the two guiding plates 52. Optionally, two guide plates 52 are used to ensure smooth sliding of the link 416.
In one embodiment, the pressing mechanism 48 further includes a rotating pin 483, a rotating hole is formed on a side surface of the guide sleeve 51, one end of the rotating pin 483 is connected to the lever arm 481, and the other end of the rotating pin 483 is rotatably disposed in the rotating hole.
In one embodiment, the junction between linkage 41 and lever arm 481 is located between the junction between lever arm 481 and guide sleeve 51 and pinch plate 482, and the distance from the junction between linkage 41 and lever arm 481 to the junction between lever arm 481 and guide sleeve 51 is less than the distance from the junction between linkage 41 and lever arm 481 to pinch plate 482. Alternatively, according to the lever principle, after the link mechanism 41 moves a predetermined distance, the moving distance of the pressing plate 482 is greatly enlarged by the rotation of the lever arm 481, thereby facilitating the pressing plate 482 to rapidly lock the inner sleeve 203. And the initial position of the pressing plate 482 can be significantly adjusted when the adjusting screw 442 rotates a minute arc.
The invention also provides a telescopic bracket 100, and the telescopic bracket 100 comprises a locking device, and the specific structure of the locking device refers to the above embodiment, and because the telescopic bracket 100 adopts all the technical schemes of all the embodiments, the telescopic bracket also has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here.
Referring to fig. 1 and 3, in one embodiment, the telescopic bracket 100 includes three legs 200, each leg 200 including an outer sleeve 201, an inner sleeve 203, and a positioning tube 202.
Referring to fig. 9 and 10, in one embodiment, the telescopic bracket 100 further includes a steering structure 10, the steering structure 10 includes a rotating cylinder 11 and a lifting column 12 connected to the rotating cylinder 11, one end of the lifting column 12 is connected to a bottom plate 414, the other end of the lifting column 12 is slidably connected to the rotating cylinder 11, a driving slot 111 for slidably connecting the lifting column 12 is formed in the rotating cylinder 11, the driving slot 111 is in a spiral arrangement, the rotating cylinder 11 rotates by a predetermined radian under the action of torque, and drives the lifting column 12 to slide along the axial direction of the positioning tube 202, so that the link mechanism 40 moves.
Referring to fig. 6, in an embodiment, the telescopic support 100 further includes a power structure 110 connected to one end of the outer sleeve 201, the power structure 110 includes a transmission rod 101 inserted into the rotary cylinder 11, a first bevel gear 102 connected to one end of the transmission rod 101, and a second bevel gear 103 meshed with the first bevel gear 102, the transmission rod 101 can be rotated by driving the second bevel gear 103 to rotate, the transmission rod 101 is provided with a clamping groove, and the rotary cylinder 11 is internally provided with a clamping strip 112 adapted to the clamping groove. The engagement of the engagement strip 112 with the engagement groove can transmit the rotational power of the transmission rod 101 to the rotary cylinder 11, thereby rotating the rotary cylinder 11.
The foregoing description of the preferred embodiment of the present invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (8)

1. A locking device for locking the connection of an inner sleeve and a positioning tube, wherein the inner sleeve and the positioning tube are coaxially arranged, characterized in that the locking device comprises:
the guide structure comprises a guide sleeve, a locking opening penetrating to an external space is formed in the inner wall of the guide sleeve, one end of the guide sleeve is used for the inner sleeve to be inserted in a sliding mode, and the other end of the guide sleeve is connected with the positioning tube; and
the locking structure comprises a connecting rod mechanism which is arranged in a sliding manner relative to the positioning pipe and a compressing mechanism which is connected with the guiding structure, the connecting rod mechanism and the guiding sleeve are respectively positioned at two ends of the positioning pipe, the compressing mechanism comprises a lever arm and a compressing disc, the lever arm is rotationally connected with the side surface of the guiding sleeve, the connecting rod mechanism is rotationally connected with one end of the lever arm, the other end of the lever arm extends to the locking opening and is connected with the compressing disc, and the connecting rod mechanism slides along the axial direction of the positioning pipe under the action of external force and drives the lever arm to rotate so that the compressing disc compresses the inner sleeve in the guiding sleeve at the locking opening;
the locking structure also comprises an adjusting mechanism for adjusting and positioning the connection position of the connecting rod base and the connecting rod slide seat, and one end of the connecting rod slide seat is connected with the lever arm;
the connecting rod base comprises a bottom plate which is connected with the positioning pipe in a sliding manner and a bottom block which is connected with one end of the bottom plate and provided with an adjusting groove, the groove wall of the adjusting groove is provided with an adjusting hole, the path of the adjusting hole is arranged along the axial direction of the positioning pipe, the adjusting mechanism comprises an adjusting gear arranged in the adjusting groove, an adjusting screw rod which is positioned in the adjusting groove and meshed with the adjusting gear, and an adjusting bolt, one end of the adjusting screw rod is connected with the adjusting gear, the other end of the adjusting bolt penetrates through the adjusting hole and is in threaded connection with the connecting rod sliding seat, and the connecting rod sliding seat is connected with the bottom plate in a sliding manner;
the locking device further comprises a steering structure, the steering structure comprises a rotary cylinder and a lifting column connected with the rotary cylinder, one end of the lifting column is connected with the bottom plate, the other end of the lifting column is slidably connected with the rotary cylinder, a driving groove for the sliding connection of the lifting column is formed in the rotary cylinder, and the driving groove is in spiral arrangement.
2. The locking device of claim 1, wherein: the connecting rod slide comprises a slide plate and a connecting rod, wherein the slide plate is connected with the bottom plate in a sliding mode and is arranged in a stacked mode, one end of the connecting rod is connected with the slide plate in a rotating mode, the other end of the connecting rod is connected with the lever arm in a rotating mode, a threaded hole is formed in one end of the slide plate, and the adjusting bolt is screwed into the threaded hole.
3. The locking device of claim 2, wherein: the connecting rod mechanism further comprises a limiting plate which is opposite to the sliding plate and is arranged in a gap mode, the length direction of the limiting plate is perpendicular to the moving direction of the sliding plate, and two ends of the limiting plate are fixedly connected with external structural members.
4. The locking device of claim 2, wherein: the lever arm is provided with a waist-shaped hole, the connecting rod mechanism further comprises a connecting pin, one end of the connecting pin is connected with the connecting rod, and the other end of the connecting pin slides and is arranged in the waist-shaped hole in a clearance mode.
5. The locking device of claim 2, wherein: the guide structure further comprises guide plates, the guide plates are connected with the side surfaces of the guide sleeves and are arranged in two at intervals, and one end of the connecting rod is located between the two guide plates.
6. A locking device according to any one of claims 2-5, wherein: the pressing mechanism further comprises a rotating pin, a rotating hole is formed in the side surface of the guide sleeve, one end of the rotating pin is connected with the lever arm, and the other end of the rotating pin is rotatably arranged in the rotating hole.
7. A locking device according to any one of claims 1-5, wherein: the transfer point of the link mechanism and the lever arm is positioned between the transfer point of the lever arm and the guide sleeve and the pressing disc, and the distance from the transfer point of the connecting rod mechanism and the lever arm to the transfer point of the lever arm and the guide sleeve is smaller than the distance from the transfer point of the connecting rod mechanism and the lever arm to the pressing disc.
8. A telescopic bracket comprising a locking device according to any one of claims 1 to 7.
CN202010564694.7A 2020-06-19 2020-06-19 Locking device and telescopic bracket Active CN113375014B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010564694.7A CN113375014B (en) 2020-06-19 2020-06-19 Locking device and telescopic bracket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010564694.7A CN113375014B (en) 2020-06-19 2020-06-19 Locking device and telescopic bracket

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Publication Number Publication Date
CN113375014A CN113375014A (en) 2021-09-10
CN113375014B true CN113375014B (en) 2023-04-28

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Publication number Priority date Publication date Assignee Title
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TW404376U (en) * 1998-07-10 2000-09-01 Ind Tech Res Inst A brake with overload absorber for bicycle
FR2827921B1 (en) * 2001-07-24 2007-05-25 Pascal Guidetti DEVICE FOR LOCKING TWO TELESCOPIC ELONGATED ELEMENTS
CN1441181A (en) * 2002-02-26 2003-09-10 翁南翔 Composite lever and lever-linked mechanical driver unit
CN2561983Y (en) * 2002-06-28 2003-07-23 庭田企业有限公司 Adjustable fixing telescopic rod
DE102014218135A1 (en) * 2014-09-10 2016-03-10 9.Solutions Technology Co., Limited Adjustable rod
CN109382844A (en) * 2017-08-04 2019-02-26 郑州工业应用技术学院 A kind of high intensity telescopic magic hand arm
CN207701989U (en) * 2017-11-01 2018-08-07 海利贵溪化工农药有限公司 A kind of water tubular union easy to use
CN208005702U (en) * 2018-01-05 2018-10-26 吴津青 A kind of lever subtended angle variable mechanical pawl
US20190257397A1 (en) * 2018-02-21 2019-08-22 Wilkins Ip, Llc Coupling assembly and method of coupling

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