CN104214177B - Locking device and expansion link - Google Patents
Locking device and expansion link Download PDFInfo
- Publication number
- CN104214177B CN104214177B CN201310212159.5A CN201310212159A CN104214177B CN 104214177 B CN104214177 B CN 104214177B CN 201310212159 A CN201310212159 A CN 201310212159A CN 104214177 B CN104214177 B CN 104214177B
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- Prior art keywords
- sleeve
- connecting portion
- locking device
- tightening sleeve
- garter spring
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Abstract
The invention discloses a kind of locking device, including taper tightening sleeve and lock sleeve, it is provided with annular projection outside the big end of taper tightening sleeve, garter spring it is provided with outside annular projection, forming a hollow bulb between garter spring and taper tightening sleeve, the small end of taper tightening sleeve offers a plurality of breach circumferentially disposed along conical sleeve；Lock sleeve includes clamping section, connecting portion and the regulating arm integrally connected；Clamping section inner peripheral surface is the conical surface matched with taper tightening sleeve；Being provided with the first spacing between connecting portion and clamping section outer peripheral face, connecting portion outer peripheral face is respectively equipped with two regulating arms being oppositely arranged, when two regulating arms near time, first spacing diminishes, when two regulating arms away from time, the first spacing becomes big, and connecting portion inner peripheral surface snaps connection on garter spring outer peripheral face.This locking device locks expansion link by lock sleeve with coordinating of taper tightening sleeve, and arranges regulating arm on lock sleeve and carry out the regular length of adjustable telescopic rod.Separately, the invention also discloses a kind of expansion link.
Description
Technical field
The present invention relates to locking device, particularly relate to a kind of locking device and expansion link.
Background technology
The mode of existing expansion link many employings bolt or torque spring realizes the function getting loose and locking,
Generally require particular tool during the length of adjustable telescopic rod to remove and install, reduce dismounting efficiency, and,
Locking device on expansion link is under life-time service, owing to abrasion can make locking device cannot fasten expansion link,
Expansion link is caused to get loose so that the product being installed on expansion link likely damages or even injures people by a crashing object, brings
Potential safety hazard.
Summary of the invention
It is an object of the invention to provide a kind of simple in construction, the locking device that easy and simple to handle and efficiency is higher.
In order to solve above-mentioned technical problem, the invention provides a kind of locking device, including taper tightening sleeve
And lock sleeve, it is provided with annular projection outside the big end of described taper tightening sleeve, sets outside described annular projection
There is garter spring, between described garter spring and described taper tightening sleeve, form a hollow bulb, described taper tightening sleeve
Small end offer a plurality of breach circumferentially disposed along described conical sleeve；Described lock sleeve includes integrally connecting
Clamping section, connecting portion and regulating arm；Described clamping section inner peripheral surface is for match with described taper tightening sleeve
The conical surface closed；The first spacing it is provided with, outside described connecting portion between described connecting portion and described clamping section outer peripheral face
Side face is respectively equipped with two regulating arms, and when described in two, regulating arm is close to each other, the size of described first spacing becomes
Little, when described in two, regulating arm is located remotely from each other, becoming large-sized of described first spacing, regulating arm described in two is used
In the size of described first spacing of regulation, described connecting portion inner peripheral surface is respectively equipped with two buckle structures, described in two
The position of buckle structure is corresponding with the position of regulating arm described in two respectively, and buckle structure described in two is for by institute
State connecting portion inner peripheral surface to snap connection on described garter spring outer peripheral face；When described connecting portion inner peripheral surface snaps connection
When described garter spring outer peripheral face, described clamping section is positioned in described hollow bulb, and clamps described taper sleeve
Cylinder.
Wherein, described buckle structure includes the button block being located at described connecting portion inner peripheral surface, described garter spring outer peripheral face
It is provided with the groove matched with described button block.
Wherein, described locking device also includes multiple disconnecting prevention structure, and multiple described disconnecting prevention structures are along described hoop
The circumference of ring is uniformly located between described lock sleeve and described garter spring, is used for preventing described lock sleeve from departing from described
Garter spring.
Wherein, described disconnecting prevention structure includes the projection being located at described connecting portion end inner peripheral surface, described protruding edge
The length the direction being perpendicular to described lock sleeve central shaft is more than described button block along being perpendicular in described garter spring
The length in the direction of mandrel, described protruding is circumferentially with second along described connecting portion with described buckle structure
Spacing, described garter spring outer peripheral face is provided with the chute being slidingly fitted with described projection, the length edge of described chute
The central axis direction described taper tightening sleeve extends.
Wherein, the small end of described taper tightening sleeve offer four circumferentially disposed along described conical sleeve
Breach.
Wherein, described locking device also includes that anti-skid structure, described anti-skid structure are located at described taper sleeve
Cylinder inner peripheral surface, described anti-skid structure is for increasing the surface roughness of described taper tightening sleeve.
Wherein, described anti-skid structure includes that slipmat, described slipmat are located at described taper tightening sleeve inner circumferential
Face.
Wherein, described anti-skid structure is made up of a plurality of wave stripe being located at described taper tightening sleeve inner peripheral surface.
Wherein, the quantity of described disconnecting prevention structure is three.
Present invention also offers a kind of expansion link, including the most sheathed multiple slide bars and described locking device,
Described slide bar one end includes that socket end, described socket end are set in the other end of another described slide bar, described cone
Shape sleeve jacket casing is located on described socket end.
The expansion link that the present invention provides by lock sleeve and taper tightening sleeve closely cooperate lock flexible
On bar, and the most described lock sleeve, regulating arm is set, carrys out the regular length of adjustable telescopic rod.
Accompanying drawing explanation
In order to be illustrated more clearly that technical scheme, below by use required in embodiment
Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Mode, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the expansion link that embodiment of the present invention provides；
Fig. 2 be taper tightening sleeve and the slide bar of Fig. 1 coordinate schematic diagram；
Fig. 3 is the decomposing schematic representation of the expansion link of Fig. 1；
Fig. 4 is the plane graph of expansion link；
Fig. 5 is the separating plane figure of locking device.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is entered
Row clearly and completely describes.
Seeing also Fig. 1 to Fig. 5, a kind of expansion link 100 that embodiment of the present invention provides, including multiple
The most sheathed slide bar 1 and locking device 2.Described locking device 2 is for fixing the length of described expansion link 100
Degree.
Described slide bar 1 one end includes that socket end 1a, described socket end 1a are set in the another of another described slide bar 1
One end.In the present embodiment, described expansion link 100 includes two slide bars 1, owing to described expansion link 100 is main
For linking together with light fixture (not shown), therefore described slide bar 1 uses the aluminum of good heat dispersion performance
Make.Certainly, in other embodiments, the quantity of described slide bar 1 can be three, four or more
Individual.
Described locking device 2 includes taper tightening sleeve 21 and lock sleeve 22.
It is provided with annular projection 211, outside described annular projection 211 outside the big end of described taper tightening sleeve 21
Side is provided with garter spring 212, forms a hollow bulb 213 between described garter spring 212 and described taper tightening sleeve 21,
The small end of described taper tightening sleeve 21 offers a plurality of along circumferentially disposed the lacking of described taper tightening sleeve 21
Mouthful.In the present embodiment, described garter spring 212 is locked by screw 212c, regulates described hollow bulb 213
Size.
The outer peripheral face of described garter spring 212 is provided with groove 212a.In the present embodiment, described garter spring 212 includes
The Guan Bi end being oppositely arranged and opening, the outer peripheral face of described garter spring 212 is provided with two groove 212a, two
Described groove 212a is oppositely arranged, and closes on described Guan Bi end and offer.
The outer peripheral face of described garter spring 212 is uniformly provided with three chute 212b.In the present embodiment, each described cunning
Groove 212b is provided with the second spacing with the described groove 212a closed on.Described chute 212b includes being oppositely arranged
First end and the second end, described first end closes on the opening of described garter spring 212 and offers.Described chute 212b
Length along the central axis direction of vertical described garter spring 212 is more than described groove 212a along vertical described hoop
The length of the central axis direction of ring 212.Certainly, in other embodiments, the quantity of described chute 212b can
Think three, four or more.
The small end of described taper tightening sleeve 21 offers four and sets along described taper tightening sleeve 21 circumference
The breach put.In the present embodiment, the bore of described taper tightening sleeve 21 is slightly larger than described socket end 1a,
Described taper tightening sleeve 21 can be closely sheathed on described socket end 1a, described taper sleeve
The small end of cylinder 21 offer four along the circumferentially disposed breach of described taper tightening sleeve 21, this breach is for working as
Described taper tightening sleeve 21 is by oppressive force thus when clamping described socket end 1a, it is provided that deformation.Certainly,
In other embodiments, the quantity of described breach can be 3～7.
In order to prevent installation personnel can be scraped off when installing described taper tightening sleeve 21, and convenient location,
The voussoir that end is arc transition of the small end of described taper tightening sleeve 21.
In order to during further such that described taper tightening sleeve 21 is closely sheathed on described socket end 1a, no
Landing can be occurred to loosen with described socket end 1a, described locking device 2 also includes anti-skid structure (not shown),
Described anti-skid structure is located at described taper tightening sleeve 21 inner peripheral surface, and described anti-skid structure is used for increasing described cone
The surface roughness of shape tightening sleeve 21.In the present embodiment, described anti-skid structure is tight by being located at described taper
Determine a plurality of wave stripe composition of sleeve 21 inner peripheral surface.When described taper tightening sleeve 21 is closely overlapped by needs
When being located on described socket end 1a, only need to make by described taper tightening sleeve 21 through described socket end 1a
The small end of described taper tightening sleeve 21 is concordant with described socket end 1a, more described garter spring 212 is passed through spiral shell
Nail 212c locking, then can by the most sheathed for described taper tightening sleeve 21 with described socket end 1a on.Certainly,
In other embodiments, described anti-skid structure includes that slipmat, described slipmat are located at described taper sleeve
Cylinder 21 inner peripheral surfaces.When described slipmat is damaged, only need to be by it from described taper tightening sleeve 21 inner peripheral surface
Stickup of tearing is gone up the newest.
Described lock sleeve 22 includes clamping section 221, connecting portion 222 and the regulating arm 223 integrally connected；
Described clamping section 221 inner peripheral surface is the conical surface matched with described taper tightening sleeve 21.In the present embodiment,
Described clamping section 221 is a cylinder, and described clamping section 221 inner peripheral surface is and described taper tightening sleeve 21 phase
The conical surface coordinated, described clamping section 221 outer peripheral face is straight cylindrical surfaces so that when described clamping section 221 inner circumferential
When face and described taper tightening sleeve 21 tight cone match, the straight cylinder outer peripheral face meeting of described clamping section 221
Its counteracting force produced is oppressed by described taper tightening sleeve 21 further, described clamping section will not be made
221 can be because being loosened described taper tightening sleeve 21 by the counteracting force of described taper tightening sleeve 21
Compressing.Certainly, in other embodiments, described clamping section 221 outer peripheral face can also be the conical surface.
It is provided with the first spacing between described connecting portion 222 and described clamping section 221 outer peripheral face.At the present embodiment
In, described connecting portion 222 is the circulus being connected with described clamping section 221 one, described connecting portion 222
Outside the blind end 222a being oppositely arranged and free end, described blind end 222a and described clamping section 221
One connects, and described free end is opening, owing to described connecting portion 222 is by snapping connection in described hoop
On ring 212 outer peripheral face, and self is coupled together by described garter spring 212 by screw 212c, therefore described freedom
End face is provided with a cooperation breach, to prevent described connecting portion 222 by snapping connection outside described garter spring 212
During side face, described free end can interfere with for by the screw 212c coupled together of described garter spring 212.
Described connecting portion 222 inner peripheral surface is respectively equipped with two buckle structures, and buckle structure described in two is for by described
Connecting portion 222 inner peripheral surface snaps connection on described garter spring 212 outer peripheral face；When described connecting portion 222 inner circumferential
Face snaps connection when described garter spring 212 outer peripheral face, and described clamping section 221 is positioned in described hollow bulb 213,
And clamping described taper tightening sleeve 21, buckle structure described in two is respectively arranged on the inner circumferential of described connecting portion 222
On face.In the present embodiment, described buckle structure includes the button block being located at described connecting portion 222 inner peripheral surface.
Detain block described in two and close on the setting of described free end face, detain block described in two and think buckle with groove 212a described in two respectively
Corresponding.When described lock sleeve 22 to lock described expansion link 100 with described taper tightening sleeve 21
During length, by two button block corresponding described garter spring 212 outer peripheral faces respectively on described connecting portion 222 inner peripheral surface
Described in two, groove 212a buckles, and the most described clamping section 221 is closely joined with described taper tightening sleeve 21 conical surface
Closing, thus oppress described taper tightening sleeve 21, described taper tightening sleeve 21 can deform upon, and clamps institute
State socket end 1a.Certainly, in other embodiments, described buckle structure includes being located at described connecting portion 222
The groove 212a of inner peripheral surface, relative, described garter spring 212 outer peripheral face is provided with buckles block to realize described locking
Snapping connection between set 22 and described taper tightening sleeve 21.
Described connecting portion 222 outer peripheral face is respectively equipped with two regulating arms 223, and described in two, regulating arm 223 is oppositely arranged,
The position of regulating arm 223 described in two is corresponding with the position of buckle structure described in two respectively, when regulating described in two
When arm 223 is close to each other, the size of described first spacing diminishes, when described in two, regulating arm 223 is located remotely from each other
Time, becoming large-sized of described first spacing.In the present embodiment, described in two, regulating arm 223 is elastomeric material
Make, facilitate deformation.Regulating arm 223 described in two it are provided with, regulating arm 223 phase described in two outside described free end
To setting, described regulating arm 223 includes connection end 223a and effect end 223b, the described regulation being oppositely arranged
Arm 223 in use needs to pull, so that described regulating arm 223 will not break easily
Splitting, described connection end 223a lateral buckling outer with described free end is connected, and in order to make described regulating arm 223 adjust
Can be more laborsaving when saving the size of described first spacing, described free end is connected end 223a bending connects with described
The both sides of junction axially offer a U-shaped breach 222d, institute respectively along described connecting portion 222
State effect end 223b to extend along described free end to the direction of described Guan Bi end, and described regulating arm 223 with
Described connecting portion 222 outer peripheral face is provided with the 3rd spacing.When needing to adjust the regular length of described expansion link 100
Time, only need to pull the effect end 223b of a described regulating arm 223 respectively, make described connecting portion 222 inner circumferential
The buckle structure in face departs from the groove 212a of described garter spring 212 outer peripheral face, can loosen described lock sleeve 22
And closely cooperating between described taper tightening sleeve 21, thus regulate the regular length of described expansion link 100.
After preventing described lock sleeve 22 from getting loose with described taper tightening sleeve 21, described cone can be departed from
Shape tightening sleeve 21 and lose, described locking device 2 also includes multiple disconnecting prevention structure 222f, multiple described anti-
De-structure 222f is uniformly located at described lock sleeve 22 and described garter spring 212 along the circumference of described garter spring 212
Between, it is used for preventing described lock sleeve 22 from departing from described garter spring 212.In the present embodiment, described anticreep knot
Structure 222f includes the projection being located at described connecting portion 222 end inner peripheral surface, and described projection is described along being perpendicular to
The length in the direction of lock sleeve 22 central shaft is more than described button block along being perpendicular to described garter spring 212 central shaft
The length in direction, described protruding and described buckle structure being circumferentially with between second along described connecting portion 222
Away from, concrete, described projection is closed on described free end and is offered, each described projection and each described chute 212b phase
Corresponding.When pullling effect end 223b described in two, described button block is made to depart from from described groove 212a, and due to
The size of described projection is more than the size of described button block, and each described protruding meeting is slided in each described chute 212b,
Until sliding to described chute 212b to close on the end of described opening, and abut against described chute 212b and close on
The end of affiliated opening, so that described lock sleeve 22 will not take off from described taper tightening sleeve 21
From.Certainly, in other embodiments, described disconnecting prevention structure 222f can also be for including being located at described connecting portion
The chute 212b of 222 end inner peripheral surfaces, corresponding, described garter spring 212 inner peripheral surface is provided with and described chute
The projection that 212b is slidingly fitted.
When described expansion link 100 uses, need head that described taper tightening sleeve 21 is closely set in described set
On cylinder end 1a: only need to make described taper tightening by described taper tightening sleeve 21 through described socket end 1a
The small end of sleeve 21 is concordant with described socket end 1a, then is locked by screw 212c by described garter spring 212,
Then can by the most sheathed for described taper tightening sleeve 21 with described socket end 1a on；Then by described lock sleeve
22 lock the length of described expansion link 100 with described taper tightening sleeve 21: by described connecting portion 222
Groove 212a described in two of two button the most corresponding described garter spring 212 outer peripheral faces of block on inner peripheral surface buckles, then institute
State clamping section 221 to closely cooperate with described taper tightening sleeve 21 conical surface, thus oppress described taper sleeve
Cylinder 21, described taper tightening sleeve 21 can deform upon, and clamps described socket end 1a so that described in stretch
Contracting bar 100 is locked in a regular length.When needing the length regulating described expansion link 100, only need
Pull the effect end 223b of a described regulating arm 223 respectively, make the buckle of described connecting portion 222 inner peripheral surface
Structure departs from the groove 212a of described garter spring 212 outer peripheral face, can loosen described lock sleeve 22 with described
Closely cooperating between taper tightening sleeve 21, thus regulate the regular length of described expansion link 100.
The expansion link 100 that the present invention provides is closely cooperated by lock sleeve 22 and taper tightening sleeve 21
On locking expansion link 100, and the most described lock sleeve 22, regulating arm 223 is set, carrys out adjustable telescopic rod 100
Regular length.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a locking device, it is characterised in that including taper tightening sleeve and lock sleeve, described taper is tight
Determine to be provided with annular projection outside the big end of sleeve, outside described annular projection, be provided with garter spring, described garter spring and institute
Stating and form a hollow bulb between taper tightening sleeve, the small end of described taper tightening sleeve offers a plurality of along institute
State the breach that conical sleeve is circumferentially disposed；Clamping section that described lock sleeve includes integrally connecting, connecting portion and
Regulating arm；Described clamping section inner peripheral surface is the conical surface matched with described taper tightening sleeve；Described connecting portion
And being provided with the first spacing between the outer peripheral face of described clamping section, described connecting portion outer peripheral face is respectively equipped with two regulating arms,
Described in two, regulating arm is oppositely arranged, and when described in two, regulating arm is close to each other, the size of described first spacing becomes
Little, when described in two, regulating arm is located remotely from each other, becoming large-sized of described first spacing, described connecting portion inner circumferential
Face is respectively equipped with two buckle structures, the position of buckle structure described in two respectively with the position phase of regulating arm described in two
Correspondence, buckle structure described in two is for snapping connection described connecting portion inner peripheral surface in described garter spring outer peripheral face；
When described connecting portion inner peripheral surface snaps connection in described garter spring outer peripheral face, described clamping section is positioned at described hollow
In portion, and clamp described taper tightening sleeve.
Locking device the most according to claim 1, it is characterised in that described buckle structure includes being located at
The button block of described connecting portion inner peripheral surface, described garter spring outer peripheral face is provided with buckles, with described, the groove that block matches.
Locking device the most according to claim 2, it is characterised in that described locking device also includes many
Individual disconnecting prevention structure, multiple described disconnecting prevention structures are uniformly located at described lock sleeve and institute along the circumference of described garter spring
State between garter spring, be used for preventing described lock sleeve from departing from described garter spring.
Locking device the most according to claim 3, it is characterised in that described disconnecting prevention structure includes being located at
The projection of described connecting portion end inner peripheral surface, described projection is along the direction being perpendicular to described lock sleeve central shaft
Length more than described button block along the length in the direction being perpendicular to described garter spring central shaft, described projection and institute
Stating the buckle structure second spacing that is circumferentially with along described connecting portion, described garter spring outer peripheral face is provided with described
The chute that projection is slidingly fitted, the length of described chute is along the central axis direction of described taper tightening sleeve
Extend.
Locking device the most according to claim 1, it is characterised in that described taper tightening sleeve little
End offers four along the circumferentially disposed breach of described conical sleeve.
Locking device the most according to claim 1, it is characterised in that described locking device also includes preventing
Slipped Clove Hitch structure, described anti-skid structure is located at described taper tightening sleeve inner peripheral surface, and described anti-skid structure is used for increasing
The surface roughness of described taper tightening sleeve.
Locking device the most according to claim 6, it is characterised in that described anti-skid structure includes anti-skidding
Pad, described slipmat is located at described taper tightening sleeve inner peripheral surface.
Locking device the most according to claim 6, it is characterised in that described anti-skid structure is by being located at
State a plurality of wave stripe composition of taper tightening sleeve inner peripheral surface.
Locking device the most according to claim 3, it is characterised in that the quantity of described disconnecting prevention structure is
Three.
10. an expansion link, it is characterised in that include the most sheathed multiple slide bar and such as claim 1～
Locking device described in 9 any one, described slide bar one end includes that socket end, described socket end are set in another
The other end of described slide bar, described taper sleeve jacket casing is located on described socket end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212159.5A CN104214177B (en) | 2013-05-31 | 2013-05-31 | Locking device and expansion link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212159.5A CN104214177B (en) | 2013-05-31 | 2013-05-31 | Locking device and expansion link |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104214177A CN104214177A (en) | 2014-12-17 |
| CN104214177B true CN104214177B (en) | 2016-08-24 |
Family
ID=52095982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310212159.5A Expired - Fee Related CN104214177B (en) | 2013-05-31 | 2013-05-31 | Locking device and expansion link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214177B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387042B (en) * | 2015-12-02 | 2018-07-13 | 珠海格力电器股份有限公司 | Limiting sleeve assembly and floor fan |
| CN106939913A (en) * | 2017-05-16 | 2017-07-11 | 响水县贝斯特传动件有限公司 | It is a kind of just to dismantle locking sleeve |
| CN108309537B (en) * | 2018-03-29 | 2023-07-21 | 北京大学第三医院 | Shoulder joint brace and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6520192B1 (en) * | 2001-11-14 | 2003-02-18 | Albert Chong-Jen Lo | Extensible positioning device of the shank of an umbrella |
| CN201723939U (en) * | 2010-04-22 | 2011-01-26 | 林松国 | Locking device of multiple tube |
| CN201905358U (en) * | 2010-12-25 | 2011-07-27 | 浙江永强集团股份有限公司 | Umbrella rod locking mechanism easy to mount and dismount |
| CN202646264U (en) * | 2012-06-08 | 2013-01-02 | 宁波意美捷影视设备有限公司 | Improved rapidly-braking hand turning mechanism |
| CN202810315U (en) * | 2009-06-03 | 2013-03-20 | 格拉茨股份公司 | Device for connecting base pipe to pole |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019775A (en) * | 2002-06-14 | 2004-01-22 | Harakkusu Kk | Expansible rod |
| GB0601441D0 (en) * | 2006-01-25 | 2006-03-08 | Rycote Microphone Windshields | Improved boom pole |
-
2013
- 2013-05-31 CN CN201310212159.5A patent/CN104214177B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6520192B1 (en) * | 2001-11-14 | 2003-02-18 | Albert Chong-Jen Lo | Extensible positioning device of the shank of an umbrella |
| CN202810315U (en) * | 2009-06-03 | 2013-03-20 | 格拉茨股份公司 | Device for connecting base pipe to pole |
| CN201723939U (en) * | 2010-04-22 | 2011-01-26 | 林松国 | Locking device of multiple tube |
| CN201905358U (en) * | 2010-12-25 | 2011-07-27 | 浙江永强集团股份有限公司 | Umbrella rod locking mechanism easy to mount and dismount |
| CN202646264U (en) * | 2012-06-08 | 2013-01-02 | 宁波意美捷影视设备有限公司 | Improved rapidly-braking hand turning mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104214177A (en) | 2014-12-17 |
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Granted publication date: 20160824 Termination date: 20190531 |