CN105090187A - Cam locking mechanism of telescopic pipe - Google Patents
Cam locking mechanism of telescopic pipe Download PDFInfo
- Publication number
- CN105090187A CN105090187A CN201410197281.4A CN201410197281A CN105090187A CN 105090187 A CN105090187 A CN 105090187A CN 201410197281 A CN201410197281 A CN 201410197281A CN 105090187 A CN105090187 A CN 105090187A
- Authority
- CN
- China
- Prior art keywords
- diameter
- cam
- sleeve pipe
- camshaft
- larger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005194 fractionation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/14—Telescoping systems locking in intermediate non-discrete positions
- F16B7/1418—Telescoping systems locking in intermediate non-discrete positions with a clamping collar or two split clamping rings tightened by a screw or a cammed latch member
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to a cam locking mechanism of a telescopic pipe. The cam locking mechanism comprises more than two sleeves, wherein the sleeves are mutually connected together in a sleeving way; the small sleeve is connected into the big sleeve in the sleeving way through a cam device; the small sleeve and the big sleeve can slide or rotate relative to each other and are fixedly connected through a connecting and locking mechanism; the connecting and locking mechanism comprises an inner clamping cover or an outer clamping cover which is arranged at one end of the big sleeve and the cam device which is arranged at one end of the small sleeve; the inner diameter of the inner clamping cover or the minimum inner diameter of the outer clamping cover is less than the outer diameter of a cam; the cam device is formed by a cam shaft and outer cam covers; a plug is arranged in a cavity of the cam shaft and is capable of preventing the cam shaft from deforming due to oversize stress; the diameter of the outer cam covers can be increased by rotating the cam shaft; connecting and fixing are realized by tightly pressing the small sleeve and the big sleeve. According to the cam locking mechanism of the telescopic pipe, disclosed by the invention, the cost of the telescopic pipe is reduced, the size is reduced, the telescopic pipe can be more conveniently and flexibly operated, the storage and the carrying are convenient, and the cam locking mechanism is particularly suitable for the tripod of a camera or a video camera.
Description
Technical field
The telescopic pipe that the present invention relates to a kind of telescopic tube or bar, particularly photographic camera or camera tripod connects locking mechanism.
Background technique
At present, on market, the existing telescopic pipe for photographic camera or camera tripod connects locking device, normally turning-fastening type or nut thread connect locking device, use must one by one pulling on every root pipe to be buckled during the telescopic pipe of this kind of tripod and to pull open or nut is outwarded winding and could be extended or shrink telescopic pipe, operate comparatively loaded down with trivial details.Moreover the telescopic pipe of this kind of tripod of manufacture processing and nut etc. are comparatively complicated, and cost is higher; On every root pipe pulling button or nut volume is comparatively large, be not easy to collection or carry tripod.
Summary of the invention
For the deficiency of above existing tripod telescopic pipe, the object of this invention is to provide a kind of flexible to operation, cost is lower, the telescopic pipe cam lock holding mechanism of small volume.
The object of the invention is by realize by the following technical solutions:
Telescopic pipe cam lock holding mechanism, comprise the above sleeve pipe of two joints, the above sleeve pipe of two joints connects together mutually, the diameter of every root sleeve pipe is unequal mutually, the casing pipe sleeve that diameter is less is connected in the larger sleeve pipe of diameter and also can mutually slides or rotate, the sleeve pipe that the sleeve pipe that diameter is larger is less with adjacent diameter is undertaken connecting and fixing by being connected locking mechanism, described connection locking mechanism comprises the internal jacket that the larger sleeve pipe one end of diameter is provided with, and the cam gear that adjacent diameter is provided with compared with small casing one end, the internal diameter of described internal jacket is less than the external diameter of cam gear; Can stop diameter comparatively small casing slide in the larger sleeve pipe of diameter or turn to several angle, but can not to come off;
Described cam gear is made up of camshaft and cam overcoat, rotating cam axle can make the enlarged-diameter of cam overcoat, enable the tight pressing of inwall of the larger sleeve pipe of cam gear and diameter, thus sleeve pipe larger to sleeve pipe less for diameter and diameter is connected and fixes.
The cam overcoat of described cam gear is made up of the thin slice of two panels annular, and two panels annular flake is oppositely arranged on the excircle of camshaft.The outer surface of described two panels annular flake is provided with light face or decorative pattern.
As the preferred technical solution of the present invention, the camshaft of described cam gear is the blind tubular-shaped structures that centre is provided with cavity, in the cavity of camshaft, be provided with blocking.
As the preferred technical solution of the present invention, described internal jacket and camshaft are respectively equipped with cylin-drical tooth, the hole that the cylin-drical tooth of internal jacket can be provided with the larger sleeve pipe of diameter is suitable, the hole that the cylin-drical tooth of camshaft can be provided with compared with small casing with diameter is suitable, thus the internal jacket in adjacent casing and camshaft is fastened on corresponding sleeve pipe.
As the preferred technical solution of the present invention, the inwall of described sleeve pipe is provided with slide-and-guide rib, the camshaft of cam gear is provided with slide-and-guide groove, and described slide-and-guide rib can be suitable with slide-and-guide groove, increases the torsion between sleeve pipe and cam gear when small casing rotates.
As the preferred technical solution of the present invention, the inner clip being located at the larger sleeve pipe one end of diameter upgraded professional title and rank by applying rules for other sectors and be set to external jacket, external jacket is sheathed on one end of the larger sleeve pipe of diameter, and the minimum diameter of external jacket is less than the external diameter of cam gear.
As the preferred technical solution of the present invention, described camshaft is comparatively connected by screw thread between small casing with diameter.
The invention has the beneficial effects as follows: from above structure, the sleeve pipe that rotating diameter is less can make cam overcoat enlarged-diameter and with the tight pressing of inwall of the larger sleeve pipe of diameter, sleeve pipe larger to sleeve pipe less for diameter and diameter is connected and fixes; Being provided with blocking in the cavity of camshaft can prevent camshaft stressed excessive and be out of shape.The invention enables that the cost of telescopic pipe is lower, small volume, more convenient to operate and flexible, be convenient to collection and carry, being specially adapted to the tripod of photographic camera or vidicon camera.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described:
Fig. 1 is the fractionation structural representation of one of the embodiment of the present invention;
Fig. 2 is the broken section structural representation of one of the embodiment of the present invention;
Fig. 3 is the broken section structural representation of the embodiment of the present invention two;
Fig. 4 is the fractionation structural representation of the embodiment of the present invention two;
Fig. 5 is the fractionation structural representation of the embodiment of the present invention three.
Embodiment
One of embodiment
As depicted in figs. 1 and 2, a kind of telescopic pipe cam lock holding mechanism, comprise the above sleeve pipe of two joints, the above sleeve pipe of two joints connects together mutually, the diameter of every root sleeve pipe is unequal mutually, the sleeve pipe 6 that diameter is less is socketed in the larger sleeve pipe of diameter 1 by cam gear and also can mutually slides or rotate, the sleeve pipe 6 that the sleeve pipe 1 that diameter is larger is less with adjacent diameter is undertaken connecting and fixing by being connected locking mechanism, described connection locking mechanism comprises the internal jacket 2 that diameter larger sleeve pipe 1 one end is provided with, and the cam gear that adjacent diameter is provided with compared with small casing 6 one end.The internal diameter of described internal jacket 2 is less than the external diameter of cam gear, diameter can be stoped to cause when comparatively small casing 6 slides into port position in the larger sleeve pipe 1 of diameter and come off, and plays position-limiting action.
In the present embodiment, described cam gear is made up of camshaft 4 and cam overcoat 3, and cam overcoat 3 is made up of two panels annular flake, and two panels annular flake is oppositely arranged on the excircle of camshaft 4, and the outer surface of two cam overcoats 3 is provided with groove.Rotating cam axle 4 can make the enlarged-diameter of cam overcoat 3, enables the tight pressing of inwall of the larger sleeve pipe of cam gear and diameter 1, thus sleeve pipe 1 larger to sleeve pipe 6 less for diameter and diameter is connected and is fixed.Described camshaft 4 is blind tubular-shaped structures that centre is provided with cavity, in the cavity of camshaft 4, be provided with blocking 5.
In the present embodiment, described internal jacket 2 and camshaft 4 are respectively equipped with cylin-drical tooth, the hole that the cylin-drical tooth of internal jacket 2 can be provided with the larger sleeve pipe of diameter 1 is suitable, the hole that the cylin-drical tooth of camshaft 4 can be provided with compared with small casing 6 with diameter is suitable, thus internal jacket 2 is fastened on the larger sleeve pipe 1 of diameter, camshaft 4 is fastened on diameter comparatively on small casing 6.The inwall of all sleeve pipes is all provided with slide-and-guide rib 8, the camshaft 4 of cam gear is provided with slide-and-guide groove 41, slide-and-guide rib 8 can be suitable with the slide-and-guide groove 41 on camshaft 4, camshaft 4 and cam gear can be moved along the slide-and-guide rib 8 of sleeve pipe, also can by rotate comparatively small casing drive camshaft 4 rotate, thus realize cam connect locking mechanism big and small sheath is connected and fixed and locks.
Embodiment two
As shown in Figure 3 and Figure 4, with reference to one of embodiment, the internal jacket 2 being located at diameter larger sleeve pipe 1 one end in one of embodiment is changed and is set to external jacket 9, external jacket 9 is sheathed on one end of the larger sleeve pipe 1 of diameter, the minimum diameter of external jacket 9 is less than the external diameter of cam gear, diameter can be stoped like this to cause when comparatively small casing 6 slides into port position in the larger sleeve pipe 1 of diameter come off, play position-limiting action, other mode of execution is identical with one of embodiment.
Embodiment three
As shown in Figure 5, with reference to one of embodiment, change the perforation Placement between the camshaft 4 described in one of embodiment and sleeve pipe into thread connecting mode, outside thread 42 is provided with in one end of camshaft 4, internal thread 61 is provided with compared with one end of small casing 6 at diameter, outside thread 42 and internal thread 61 suitable, camshaft 4 and diameter are comparatively connected with 61 by screw thread 42 between small casing 6, and other mode of execution is identical with one of embodiment.
Claims (6)
1. a telescopic pipe cam lock holding mechanism, comprise the above sleeve pipe of two joints, the above sleeve pipe of two joints connects together mutually, the diameter of every root sleeve pipe is unequal mutually, the sleeve pipe (6) that diameter is less is socketed in the larger sleeve pipe of diameter (1) and also can mutually slides or rotate, the sleeve pipe (6) that the sleeve pipe (1) that diameter is larger is less with adjacent diameter is undertaken connecting and fixing by being connected locking mechanism, it is characterized in that: described connection locking mechanism comprises the internal jacket (2) that the larger sleeve pipe of diameter (1) one end is provided with, and the adjacent diameter comparatively cam gear that is provided with of small casing (6) one end, the internal diameter of described internal jacket (2) is less than the external diameter of cam gear,
Described cam gear is made up of camshaft (4) and cam overcoat (3), rotating cam axle (4) can make the enlarged-diameter of cam overcoat (3), enable the tight pressing of inwall of the larger sleeve pipe of cam gear and diameter (1), thus sleeve pipe (1) larger with diameter for sleeve pipe (6) less for diameter is connected and fixes;
The cam overcoat (3) of described cam gear is made up of the thin slice of two panels annular, and two panels annular flake is oppositely arranged on the excircle of camshaft (4); The outer surface of described two panels annular flake (3) is provided with light face or decorative pattern.
2. telescopic pipe cam lock holding mechanism according to claim 1, is characterized in that: the camshaft (4) of described cam gear is the blind tubular-shaped structures that centre is provided with cavity, in the cavity of camshaft (4), be provided with blocking (5).
3. telescopic pipe cam lock holding mechanism according to claim 1, it is characterized in that: described internal jacket (2) and camshaft (4) are respectively equipped with cylin-drical tooth, the hole that the cylin-drical tooth of internal jacket (2) can be provided with the larger sleeve pipe of diameter (1) is suitable, the cylin-drical tooth of camshaft (4) can comparatively the hole that is provided with of small casing (6) be suitable with diameter, thus the internal jacket (2) in adjacent casing and camshaft (4) is fastened on corresponding sleeve pipe.
4. telescopic pipe cam lock holding mechanism according to claim 1, it is characterized in that: the inwall of described sleeve pipe is provided with slide-and-guide rib (8), the camshaft (4) of cam gear is provided with slide-and-guide groove (41), and described slide-and-guide rib (8) can be suitable with slide-and-guide groove (41).
5. telescopic pipe cam lock holding mechanism according to claim 1, it is characterized in that: the internal jacket (2) being located at the larger sleeve pipe of diameter (1) one end is changed and is set to external jacket (9), external jacket (9) is sheathed on one end of the larger sleeve pipe of diameter (1), and the minimum diameter of external jacket (9) is less than the external diameter of cam gear.
6. telescopic pipe cam lock holding mechanism according to claim 1 or 5, is characterized in that: described camshaft (4) and diameter are comparatively connected by screw thread between small casing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197281.4A CN105090187A (en) | 2014-05-11 | 2014-05-11 | Cam locking mechanism of telescopic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197281.4A CN105090187A (en) | 2014-05-11 | 2014-05-11 | Cam locking mechanism of telescopic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090187A true CN105090187A (en) | 2015-11-25 |
Family
ID=54571289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410197281.4A Pending CN105090187A (en) | 2014-05-11 | 2014-05-11 | Cam locking mechanism of telescopic pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044301A (en) * | 2016-12-13 | 2017-08-15 | 惠阳航空螺旋桨有限责任公司 | Locking device for propeller beta pipe |
-
2014
- 2014-05-11 CN CN201410197281.4A patent/CN105090187A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044301A (en) * | 2016-12-13 | 2017-08-15 | 惠阳航空螺旋桨有限责任公司 | Locking device for propeller beta pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151125 |
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| WD01 | Invention patent application deemed withdrawn after publication |