CN102763963A - Luggage case and its telescopic rod apparatus - Google Patents
Luggage case and its telescopic rod apparatus Download PDFInfo
- Publication number
- CN102763963A CN102763963A CN2011101153250A CN201110115325A CN102763963A CN 102763963 A CN102763963 A CN 102763963A CN 2011101153250 A CN2011101153250 A CN 2011101153250A CN 201110115325 A CN201110115325 A CN 201110115325A CN 102763963 A CN102763963 A CN 102763963A
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- Prior art keywords
- expansion link
- down screw
- tie down
- outer bar
- hole
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Abstract
The invention discloses a telescopic rod apparatus, which comprises an external rod and an internal telescopic rod which are nested with each other as well as a locking screw for locking the external rod and the internal telescopic rod. The external rod is provided with a thread through hole which fits with the locking screw. The inner end of the locking screw is provided with a limit part for limiting the locking screw to turn outward along the thread through hole. The limit part at the inner end of the locking screw in the telescopic rod apparatus can limit the locking screw to be turned outward exceedingly after the locking screw is screwed loose, thus further avoiding the locking screw from disengaging the telescopic rod apparatus and losing. The invention also discloses a luggage case containing the above telescopic rod apparatus.
Description
Technical field
The present invention relates to field of mechanical technique, particularly a kind of expansion link device.The invention still further relates to a kind of luggage case that comprises above-mentioned expansion link device.
Background technology
The expansion link device is comparatively extensive in the application of field of mechanical technique, such as, the bracing frames of the telescopic lever of luggage case, the telescopic supporting rod of sunshade/awning, measurement etc. all use the expansion link device, can reduce the volume of single unit system, are convenient to transport and deposit.
When in said structure, using the expansion link device, all there is the problem of location.The expansion link device comprises outer bar and interior bar, when interior bar is retractable to desired location with respect to outer bar, needs fixing outer bar of positioner and interior bar, makes overall structure be in stable status, can effectively use.
In the prior art, adopt tie down screw to lock usually.Have certain clearance between the internal chamber wall of interior bar and outer bar, thereby realize the relative stretching motion between the two, the tube wall of outer bar is provided with the screwed hole adaptive with tie down screw; Tie down screw inserts in this screwed hole, when interior bar is retractable to desired location, constantly tightens tie down screw; The outer wall of bar in tightly conflicting in the inner of tie down screw; Under function of friction, interior bar can't continue along the inner chamber of outer bar to move, thus fixing interior bar and outer bar; Need to continue stretch or withdrawal in during bar, the derotation tie down screw unclamps tie down screw and interior bar, the Telescoping of bar in recovering.
Yet there is certain drawback in this kind lock mode, and when unclamping tie down screw, tie down screw is in loosening state, outer easily moving back, thus come off, lose on the self extending lever apparatus, influence integrally-built use.
Therefore, how a kind of expansion link device is provided, the tie down screw of its location is difficult for outer moving back and loose or dislocation, is those skilled in the art's technical issues that need to address.
Summary of the invention
An object of the present invention is to provide a kind of expansion link device, the tie down screw of this expansion link device is under the effect of limiting component, and can not crossing is outside one's consideration moves back and break away from the expansion link device.Another object of the present invention provides a kind of luggage case that comprises above-mentioned expansion link device.
For reaching first purpose of the present invention; The present invention provides a kind of expansion link device; Comprise mutually nested outer bar and interior expansion link; And the tie down screw of locking said outer bar and said interior expansion link, said outer bar is provided with the tapped through hole adaptive with said tie down screw, and the inner of said tie down screw is provided with the limiting component that the said tie down screw of restriction moves back along said tapped through hole outward.
Preferably, said limiting component is a spacing end cap of being located at the inner of said tie down screw, and said outer bar is provided with radially shoulder hole, and the big footpath section of said shoulder hole is near the inner chamber of said outer bar, and said tapped through hole is the path section of said shoulder hole; The diameter of said spacing end cap is greater than the diameter of said path section, and less than the diameter of said big footpath section.
Preferably, the outer end of said tie down screw connects the locking handwheel, and the diameter of said locking handwheel is greater than the diameter of said path section, and said locking handwheel has the thread groove adaptive with said tie down screw.
Preferably, the bar wall of said outer bar is provided with said shoulder hole coaxial, and the installing hole that supplies said tie down screw to insert.
Preferably, said outer bar has locking bed, and the outer bar wall of said locking bed and said outer bar is fixed, and said shoulder hole is located on the said locking bed; And on the outer bar wall of the said outer bar corresponding, be provided with and coaxial setting of said shoulder hole and the through hole that supplies said tie down screw to run through with said locking bed.
Preferably, the axial height of said spacing end cap is less than the axial height sum of said big footpath section and said through hole.
Preferably, said locking bed is fixedly welded on the outer bar wall of said outer bar.
The limiting component that this invention provides the inner of tie down screw in the expansion link device to be provided with, limiting component can limit tie down screw and cross to be outside one's consideration and move back unscrewing the back, and then avoid tie down screw to break away from the expansion link device and lose.
In a kind of concrete embodiment, said limiting component is a spacing end cap of being located at the inner of said tie down screw, and said outer bar is provided with radially shoulder hole; The diameter of said spacing end cap is greater than the diameter of said path section, and less than the diameter of said big footpath section, then unscrew tie down screw after; Tie down screw can retreat in the section of big footpath in addition; When it continues outward when retreating to the step surface place of shoulder hole, receive stopping of step surface and can't continue outer moving back, thereby avoid its disengaging expansion link device; This features simple structure is prone to row, on technology, realizes easily.
In the another kind of specific embodiment, the outer end of said tie down screw connects the locking handwheel, and said locking handwheel has the thread groove adaptive with said tie down screw, and the diameter of locking handwheel is greater than the diameter of path section.When then installing; Can insert tie down screw and spacing end cap earlier; Outer end with tie down screw screws in the thread groove again, and being threaded with the locking handwheel is integral, and this kind structure is convenient to realize the installation of tie down screw; And the locking handwheel is convenient to application of force rotational lock screw rod, can also limit simultaneously tie down screw when loosening, get into outside the inner chamber of bar.
For reaching another object of the present invention, the present invention also provides a kind of luggage case, comprises casing and the expansion link device that lifts said casing, and said expansion link device is above-mentioned each described expansion link device.Because above-mentioned expansion link device has above-mentioned technique effect, the luggage case with this expansion link device also has identical technique effect.
Description of drawings
Fig. 1 is the mounting structure sketch map of a kind of specific embodiment of expansion link device provided by the present invention;
Fig. 2 is the structural representation after tie down screw becomes flexible among Fig. 1;
Fig. 3 is the structural representation that clamping screw is locked outer bar and interior expansion link among Fig. 1;
Fig. 4 is the transverse sectional view of Fig. 1;
Fig. 5 is the structural representation after tie down screw becomes flexible among Fig. 4;
Fig. 6 is the structural representation of the another kind of specific embodiment of expansion link device provided by the present invention;
Fig. 7 is the structural representation of another specific embodiment of expansion link device provided by the present invention.
The specific embodiment
A core of the present invention provides a kind of expansion link device, and the tie down screw of this expansion link device is under the effect of limiting component, and can not crossing is outside one's consideration moves back and break away from the expansion link device.Another core of the present invention provides a kind of luggage case that comprises above-mentioned expansion link device.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1 to Fig. 5, Fig. 1 is the mounting structure sketch map of a kind of specific embodiment of expansion link device provided by the present invention; Fig. 2 is the structural representation after tie down screw becomes flexible among Fig. 1; Fig. 3 is the structural representation that clamping screw is locked outer bar and interior expansion link among Fig. 1; Fig. 4 is the transverse sectional view of Fig. 1; Fig. 5 is the structural representation after tie down screw becomes flexible among Fig. 4.
Expansion link device provided by the present invention comprises mutually nested outer bar 1 and interior expansion link 2, obviously; Outer bar 1 is a tubular body; For interior expansion link 2 along its tube chamber axially make stretching motion, the structure of interior expansion link 2 is also unrestricted, can be tubular body; Also can be solid, get final product according to actual user demand design; The tie down screw 3 that also comprises locking outer bar 1 and interior expansion link 2, outer bar 1 are provided with the tapped through hole adaptive with tie down screw 3, use for the ease of reality; The axis of tapped through hole is vertical with the bar wall of outer bar 1 usually; The i.e. radially extension of the cross section of the outer bar 1 in edge, when interior expansion link 2 is retractable to desired location, continuous inward turning tie down screw 3; The outer wall of expansion link 2 in the inner of tie down screw 3 pushes against, make in expansion link 2 under the frictional force effect and outside bar 1 relative fixed.The inner of tie down screw 3 is provided with the limiting component that restriction tie down screw 3 moves back among the present invention outside tapped through hole; " move back outward " refer to loosening tie down screw 3 after; Tie down screw 3 continues rotation along loosening rotation direction, withdraws from from the outside of the outside bar 1 of tapped through hole, promptly breaks away from the expansion link device fully; Instigate the time spent tie down screw 3 " the inner ", and it is near an end of outer bar 1 inner chamber, and correspondingly, " outer end " of tie down screw 3 is the end of tie down screw 3 away from outer bar 2 inner chambers in the following content.
Limiting component in this embodiment is the spacing end cap 5 of being located at the inner of tie down screw 3, and is as shown in Figure 2, and the inner of tie down screw 3 has block.Outer bar 1 is provided with radially shoulder hole 111, radially refers to outer bar 1 cross section here radially, and is as shown in Figure 1, big footpath section 1111 the inner chambers of shoulder hole 111 near outer bar 1, and tapped through hole is the path section 1112 of shoulder hole 111; The diameter of spacing end cap 5 is greater than the diameter of path section 1112, and less than the diameter of big footpath section 1111.In the time of then need locating outer bar 1 and interior expansion link 2, the tie down screw 3 of screwing is about to tie down screw 3 and screws towards the direction of interior expansion link 2, and the spacing end cap 5 and the outer wall of interior expansion link 2 are conflicted; When loosening interior expansion link 2 and outer bar 1; Derotation so that tie down screw 3 is loosening away from interior expansion link 2 because the diameter of the spacing end cap 5 of tie down screw 3 is less than the diameter of big footpath section 1111 in the shoulder hole 111, then spacing end cap 5 can beyond retreat in the big footpath section 1111; When outside spacing end cap 5 continues, retreating to the step surface place of shoulder hole 111; Because the diameter of spacing end cap 5 is greater than the diameter of path section 1112, then spacing end cap 5 receives keeping out of step surface, can't continue outer moving back; Therefore, this structure can be avoided tie down screw 3 to unscrew the back breaking away from the expansion link device and lose.Spacing end cap 5 can be an integral structure with tie down screw 3, also can be split-type structural, such as, can spacing end cap 5 be threaded with tie down screw 3.
In the foregoing description, be fixed with locking bed 11 on the outer bar wall of outer bar 1, shoulder hole 111 is arranged on the locking bed 11; And the outer bar wall position corresponding with locking bed 11; Be provided with the through hole 13 that runs through with coaxial setting of tapped through hole and confession tie down screw 3; Obviously; The diameter of spacing end cap 5 satisfy its outer retreating in the big footpath section 1111 of shoulder hole 111, or the end face of spacing end cap 5 retreats to through hole 13 places outward also less than the diameter of through hole 13.This scheme directly is not provided with shoulder hole 111 on the bar wall of bar 1 outside, but establishes locking bed 11 structures in addition, direct processing shoulder hole 111 structures on locking bed 11, and this kind design can simplified processing process.Among this embodiment, locking bed 11 is separate structures parts, can be fixed on the bar wall of outer bar 1 through welding manner, and this connected mode is simple, and can obtain good fixed effect, can certainly adopt conventional fixed forms such as bolt.
Certainly, also can directly process shoulder hole 111 on the bar wall of bar 1 outside, please refer to Fig. 6, Fig. 6 is the structural representation of the another kind of specific embodiment of expansion link device provided by the present invention.
Because the locking of tie down screw 3 needs the tapped through hole of certain-length; Then directly during processing shoulder hole 111, require the bar wall of outer bar 1 to possess certain thickness, as shown in Figure 6; Comparatively speaking; After using locking bed 11, can adopt the thin outer bar 1 of bar wall, thus can save material, alleviate the expansion link device weight, improve its practical ranges, control production cost effectively.
In fact, also can make outer bar 1 have thicker local bar wall, process shoulder hole 111 at this than thickness portion, can realize the object of the invention equally, this kind scheme is than the technical scheme of locking bed 11, and the latter more helps the machine-shaping of outer bar 1.
Further; In above-mentioned each embodiment, the axial height that preferably makes spacing end cap 5 is less than the axial height sum of big footpath section 1111 and through hole 13, axially be shoulder hole 111 and through hole 13 axially; After then tie down screw 3 becomes flexible; Spacing end cap 5 is can be fully outer to be retreated in through hole 13 or the big footpath section 1111, does not take the inner chamber of outer bar 1, in order to avoid the interior expansion link 2 of the influence stretching motion in the bar 1 outside.
To the foregoing description, in fact, limiting component can be other structures also, please refer to Fig. 7, and Fig. 7 is the structural representation of another specific embodiment of expansion link device provided by the present invention.
This embodiment processes the boss 6 that radially extends along tie down screw 3 in the inner of tie down screw 3; The distance of the outer rim of boss 6 to shoulder hole 111 axis is greater than the diameter of path section 1112 in the shoulder hole 111; Then boss 6 can block step surface, can limit tie down screw 3 outer moving back equally and come off.Further, also can expect direct machining screw through hole on the outer bar 1; Do not adopt shoulder hole 111 structures, the radial distance of limiting components such as spacing end cap 5 or boss 6 is greater than the diameter of tapped through hole, when then moving back outside the tie down screw 3; Above-mentioned limiting component can block the interior bar wall of outer bar 1, prevents that tie down screw 3 from coming off, certainly; This kind mode can occupy certain intracavity space, uses the structure of shoulder hole 111 to be easier to practical operation; Expansion link 2 is accurately flexible in being convenient to, and the space of adjusting is also bigger.
For above each embodiment; The outer end of tie down screw 3 can connect locking handwheel 4, and locking handwheel 4 is convenient to implement screwing of tie down screw 3 and loosening, in addition; The diameter of locking handwheel 4 is greater than the diameter of the path section 1112 of shoulder hole 111; Also can avoid the loosening back of tie down screw 3 to get into the inner chamber of outer bar 1, then under the effect of spacing end cap 5 and locking handwheel 4, tie down screw 3 do not understand outer move back or in proceed to and outer bar 1 comes off.Process the thread groove 41 adaptive with tie down screw 3 on the handwheel 4 in locking, the notch of thread groove 41 is relative with shoulder hole 111, promptly during duty; The spacing end cap 5 of tie down screw 3 one ends and locking handwheel 4 lay respectively at the both sides of outer bar 1; When tie down screw 3 is installed, can earlier the tie down screw that connects spacing end cap 53 be inserted shoulder hole 111, will lock handwheel 4 again and screw with the outer end of tie down screw 3; Realize under this kind structure; The installation of tie down screw 3, at this moment, tie down screw 3, spacing end cap 5 and locking handwheel 4 become integral body.
On the basis of such scheme, can be further outside on the bar 1 bar wall, with the position of tapped through hole radial symmetric, the installing hole 12 that supplies tie down screw 3 to insert is set.When the tie down screw that is connected with spacing end cap 53 was fit into shoulder hole 111, based on the restriction of outer bar 1 and interior expansion link 2 structures, tie down screw 3 was not easy to insert shoulder hole 111 from the inner chamber of outer bar 1; After installing hole 12 is set; As shown in Figure 4, tie down screw 3 can be directly inserts in the inner chamber of outer bar 1 from installing hole 12, because installing hole 12 and shoulder hole 111 radial symmetric; Be installing hole 12 and shoulder hole 111 coaxial settings, thereby realized the installation of tie down screw 3 easily.Certainly, the diameter of installing hole 12 is greater than the diameter of tie down screw 3 upper limit end caps 5, so that in the inner chamber of the outer bar 1 of tie down screw 3 whole insertions in this scheme.
Except above-mentioned expansion link device, the present invention also provides a kind of luggage case, comprises casing and the expansion link device that lifts casing, and the expansion link device is the described expansion link device of above-mentioned arbitrary embodiment.Because the expansion link device in the foregoing description has above-mentioned technique effect, the luggage case with this expansion link device also has identical technique effect, does not give unnecessary details at this.
More than a kind of luggage case provided by the present invention and expansion link device thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (8)
1. expansion link device; Comprise mutually nested outer bar (1) and interior expansion link (2); And the tie down screw (3) of locking said outer bar (1) and said interior expansion link (2); Said outer bar (1) is provided with and the adaptive tapped through hole of said tie down screw (3), it is characterized in that, the inner of said tie down screw (3) is provided with the limiting component that the said tie down screw of restriction (3) moves back along said tapped through hole outward.
2. expansion link device according to claim 1; It is characterized in that; Said limiting component is a spacing end cap (5) of being located at the inner of said tie down screw (3); Said outer bar (1) is provided with radially shoulder hole (111), and the big footpath section (1111) of said shoulder hole (111) is near the inner chamber of said outer bar (1), and said tapped through hole is the path section (1112) of said shoulder hole (111); The diameter of said spacing end cap (5) is greater than the diameter of said path section (1112), and less than the diameter of said big footpath section (1111).
3. expansion link device according to claim 1 and 2; It is characterized in that; The outer end of said tie down screw (3) connects locking handwheel (4); The diameter of said locking handwheel (4) is greater than the diameter of said path section (1112), and said locking handwheel (4) has the thread groove (41) adaptive with said tie down screw (3).
4. expansion link device according to claim 3 is characterized in that, the bar wall of said outer bar (1) is provided with said shoulder hole (111) coaxial, and the installing hole (12) that supplies said tie down screw (3) to insert.
5. expansion link device according to claim 4 is characterized in that, said outer bar (1) has locking bed (11), and said locking bed (11) is fixed with the outer bar wall of said outer bar (1), and said shoulder hole (111) is located on the said locking bed (11); And on the outer bar wall of the said outer bar (1) corresponding, be provided with and coaxial setting of said shoulder hole (111) and the through hole (13) that supplies said tie down screw (3) to run through with said locking bed (11).
6. expansion link device according to claim 5 is characterized in that, the axial height of said spacing end cap (5) is less than the axial height sum of said big footpath section (1111) and said through hole (13).
7. expansion link device according to claim 6 is characterized in that, said locking bed (11) is fixedly welded on the outer bar wall of said outer bar (1).
8. a luggage case comprises casing and the expansion link device that lifts said casing, it is characterized in that said expansion link device is each described expansion link device of claim 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101153250A CN102763963A (en) | 2011-05-05 | 2011-05-05 | Luggage case and its telescopic rod apparatus |
| PCT/CN2011/078831 WO2012149712A1 (en) | 2011-05-05 | 2011-08-24 | Suitcase and telescopic rod assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101153250A CN102763963A (en) | 2011-05-05 | 2011-05-05 | Luggage case and its telescopic rod apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102763963A true CN102763963A (en) | 2012-11-07 |
Family
ID=47091722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101153250A Pending CN102763963A (en) | 2011-05-05 | 2011-05-05 | Luggage case and its telescopic rod apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102763963A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968213A (en) * | 2014-05-22 | 2014-08-06 | 苏州天脉导热科技有限公司 | Detachable supporting structure |
| CN105108438A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Butt-joint type auxiliary welding device for metal pipes |
| CN105355810A (en) * | 2015-11-27 | 2016-02-24 | 济南大学 | Movable storage battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3453011A (en) * | 1966-08-02 | 1969-07-01 | Kuerbi & Niggeloh | Support particularly for photographic purposes |
| JPS57124608U (en) * | 1981-01-28 | 1982-08-03 | ||
| US6343404B1 (en) * | 2000-06-21 | 2002-02-05 | Chaw Khong Technology Co., Ltd. | Multi-step positioning device of trunk pull rod |
| CN201193632Y (en) * | 2008-05-14 | 2009-02-11 | 汪晓春 | Screw telescoping rod |
| CN201437807U (en) * | 2009-07-31 | 2010-04-14 | 中国化学工程第十四建设有限公司 | Retractable screw rod |
| CN202012544U (en) * | 2011-05-05 | 2011-10-19 | 浙江泰普森休闲用品有限公司 | Luggage case and telescoping rod apparatus thereof |
-
2011
- 2011-05-05 CN CN2011101153250A patent/CN102763963A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3453011A (en) * | 1966-08-02 | 1969-07-01 | Kuerbi & Niggeloh | Support particularly for photographic purposes |
| JPS57124608U (en) * | 1981-01-28 | 1982-08-03 | ||
| US6343404B1 (en) * | 2000-06-21 | 2002-02-05 | Chaw Khong Technology Co., Ltd. | Multi-step positioning device of trunk pull rod |
| CN201193632Y (en) * | 2008-05-14 | 2009-02-11 | 汪晓春 | Screw telescoping rod |
| CN201437807U (en) * | 2009-07-31 | 2010-04-14 | 中国化学工程第十四建设有限公司 | Retractable screw rod |
| CN202012544U (en) * | 2011-05-05 | 2011-10-19 | 浙江泰普森休闲用品有限公司 | Luggage case and telescoping rod apparatus thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968213A (en) * | 2014-05-22 | 2014-08-06 | 苏州天脉导热科技有限公司 | Detachable supporting structure |
| CN105108438A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Butt-joint type auxiliary welding device for metal pipes |
| CN105355810A (en) * | 2015-11-27 | 2016-02-24 | 济南大学 | Movable storage battery |
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Application publication date: 20121107 |