CN2184140Y - Chain-type hand operated boom - Google Patents
Chain-type hand operated boom Download PDFInfo
- Publication number
- CN2184140Y CN2184140Y CN 94200424 CN94200424U CN2184140Y CN 2184140 Y CN2184140 Y CN 2184140Y CN 94200424 CN94200424 CN 94200424 CN 94200424 U CN94200424 U CN 94200424U CN 2184140 Y CN2184140 Y CN 2184140Y
- Authority
- CN
- China
- Prior art keywords
- constant force
- force spring
- hinge
- hand operated
- frame plate
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a device for hanging a light for the middle and the small studios for the television station and the audio-visual education program. The utility model has the purpose that the utility model provides a chain-type hand operated boom which has the soft feeling, stable performance and high reliable. The utility model comprises a lower connection element, a position limiting mechanism, a hinge rack, a constant force spring, a connection shaft, a constant force spring rack, a constant force spring wheel, an upper connection element and a wheel shaft, wherein, the position limiting mechanism is respectively connected with the lower connection element and the hinge rack; the upper end of the hinge rack and the constant force spring rack are connected with the upper connection element through the connection shaft; the constant force spring wheel is connected with the constant force spring rack through the wheel shaft; the constant force spring is winded on the constant force spring wheel; the outer end of the constant force spring is connected with a shaft 17.
Description
The utility model belongs to field of light fittings.
Two groups of hinge type hand operated constant force suspension rods (hereinafter to be referred as the constant force suspension rod) are the devices that light fixture is hung in a kind of middle-size and small-size studio that is used for TV station, audio-visual education programme, require it should possess characteristics such as feel is soft, flexible operation, simple in structure, and it is little to take up room during work.Prior art constant force suspension rod remains in weak point aspect several above-mentioned.One, connected mode between the hinge frame plate is to adopt to put a plain washer between two hinge frame plates, be stuck on the axle in the two hinge frame plate outside with split washer then, to block the hinge frame plate, because the circlip groove on the axle and the gauge of packing ring always have certain tolerance, during device, form accumulated error, cause degree of tightness to differ, make the constant force suspension rod on the whole, when flexible down, it is tight when time thes be loose, feeling of hand is not soft, its two, upper link is not directly to link to each other with hinge mount, the spring wheel carrier will be passed through in the centre, nut check, split pin is fixed, then, coupling spindle is contained on the spring wheel carrier, assembling is complicated, fixing insecure, easily loosening; They are three years old, there is not ad hoc stopping means (see figure 1), its spacing guiding is the stopper slot 4 and hinge mount hinge frame plate 2 bottom by lower link, 3 and central shaft 25,26 realize, because half of hinge frame plate 2 and hinge frame plate 3 is isometric, when hinge mount is stretched to when the longest, two central shafts 25,26 distance has been similar to the length of hinge hack lever 3, it is very long that this just requires that stopper slot 4 opens, it is very long correspondingly to require lower link 1 also to do ground, for little studio, because the restriction of steric requirements, lower link is long, just can influence the constant force suspension rod on, move down, for this reason, just need to shorten the length of hinge frame plate, the hinge frame plate shortens, can influence the overall tensile elongation of constant force suspension rod again, correspondingly also need increase the quantity of hinge frame plate, the stability of constant force suspension rod and reliability are affected again thus.
The purpose of this utility model is to provide a kind of feel soft, simple in structure, stable performance, two group hinge type hand operated constant force suspension rods that reliability is high.
The utility model comprises lower link 5, position-limit mechanism, hinge mount 10, constant force spring 11, coupling spindle 12, constant force spring support 13, constant force spring wheel 14, upper link 15, wheel shaft 16, axle 17, wherein position-limit mechanism comprises short slab 7, long slab 9, central shaft 6,8, axle 18, short slab 7 is less than the length of long slab 9, long slab 9 is less than the length of hinge frame plate, one end of short slab 7 and long slab 9 links to each other by axle 18, the other end of short slab 7 links to each other with lower link 5 by central shaft 6, be positioned at connector 5 central shaft holes top and have stopper slot 19, central shaft 8 links to each other with plate 9, and insert in the stopper slot 19, the other end of long slab 9 links to each other with hinge mount 10 by axle 17, the upper end of hinge mount 10 links to each other with upper link 15 by coupling spindle 12 with constant force spring support 13, constant force spring wheel 14 links to each other with constant force spring support 13 by wheel shaft 16, constant force spring 11 is entangled on the constant force spring wheel 14, and its outer end links to each other with axle 17.
Advantage of the present utility model is to adopt position-limit mechanism, can shorten the length of lower link greatly, and the length of hinge frame plate is no longer restricted, and its quantity also can correspondingly reduce, and has strengthened the stability and the reliability of constant force suspension rod, makes its adaptability stronger.Owing to adopted three spike shape spring pads, to have eliminated because various errors cause loose spacious when connecting between the hinge frame plate, and when making the utility model work, feel is softer, the while has also been improved the ability of bearing load.The utility model has been simplified upper link, makes structure advantages of simple more, fixation, and installation and maintenance are also very convenient.
Fig. 1 is the two group of a prior art hinge type hand operated constant force suspension rod overall pattern
Fig. 2 is the two group of a utility model hinge hand operated constant force suspension rod overall pattern
Fig. 3 is a connection layout between the utility model hinge frame plate
Fig. 4 is the utility model hinge frame plate sectional view
Fig. 5 is the utility model constant force spring wheel installation diagram
Embodiment:
The utility model hinge frame plate adopts aluminium, its cross section is an I font (see figure 4), plate hinge frame plate than prior art, promptly improved intensity, reduced material usage again, long slab 9 is 3/4ths length of hinge frame plate, short slab 7 is 1/4th length of hinge frame plate, be added with back-up ring 27(at wheel shaft 16 two ends and see Fig. 5), flat head screw 24 passes back-up ring 27 and back-up ring 27 is screwed on the wheel shaft 16, between hinge frame plate and the plate junction, three spike shape spring pad 21(are housed see Fig. 3), bearing pin 22 is passed hinge frame plate 23 and three spike shape spring pads 21, split washer 20 is loaded on hinge frame plate 23 outside bearing pins 22, be used for fixing the hinge frame plate, during assembling, make three spike shape spring pads 21 between hinge frame plate junction, produce precompression all the time, eliminate because that error causes is loose spacious, make on the utility model, when flexible down, feel is soft, and other each parts type of attachment is the same.Install and use, with the upper link chamber of being loaded on top, light fixture is loaded on the lower link 5, when needs are adjusted the height of lamp, can upper and lower push-and-pull light fixture, and can make light fixture be parked in the optional position.
Claims (7)
1, two groups of hinge type hand operated constant force suspension rods, comprise lower link 5, hinge mount 10, constant force spring 11, coupling spindle 12, constant force spring support 13, constant force spring wheel 14, upper link 15, wheel shaft 16, have stopper slot 19 on the lower link 5, constant force spring wheel 14 links to each other with constant force spring support 13 by wheel shaft 16, constant force spring 11 is entangled on the constant force spring wheel 14, its outer end links to each other with axle 17, it is characterized in that, also comprise position-limit mechanism, position-limit mechanism comprises, short slab 7, long slab 9, central shaft 6,8, axle 18, short slab 7 is less than the length of long slab 9, long slab 9 is less than the length of hinge frame plate, one end of short slab 7 and long slab 9 links to each other by axle 18, the other end of short slab 7 links to each other with lower link 5 by central shaft 6, and central shaft 8 links to each other with long slab 9, and inserts in the stopper slot 19, the other end of long slab 9 links to each other with hinge mount 10 by axle 17, and the upper end of hinge mount 10 links to each other with upper link 15 by coupling spindle 12 with constant force spring support 13.
2, according to the described two group hinge type hand operated constant force suspension rods of claim 1, it is characterized in that, three spike shape spring pads 21 are housed on the bearing pin 22 between hinge frame plate and the plate junction.
3, two group hinge type hand operated constant force suspension rod according to claim 1 and 2 is characterized in that be added with back-up ring 27 at wheel shaft 16 two ends, flat head screw 24 passes back-up ring 27, and back-up ring 27 is screwed on the wheel shaft 16.
4, according to claim 1 or 2 described two group hinge type hand operated constant force suspension rods, it is characterized in that hinge frame plate cross section is the I font.
5, according to the described two group hinge type hand operated constant force suspension rods of claim 3, it is characterized in that hinge frame plate cross section is the I font.
6, according to claim 1 or 2 described two group hinge type hand operated constant force suspension rods, it is characterized in that long slab 9 is 3/4ths length of flap, short slab 7 is 1/4th length of hinge frame plate.
7, according to the described two group hinge type hand operated constant force suspension rods of claim 3, it is characterized in that long slab 9 is 3/4ths length of flap, short slab 7 is 1/4th length of hinge frame plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94200424 CN2184140Y (en) | 1994-01-14 | 1994-01-14 | Chain-type hand operated boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94200424 CN2184140Y (en) | 1994-01-14 | 1994-01-14 | Chain-type hand operated boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2184140Y true CN2184140Y (en) | 1994-11-30 |
Family
ID=33820764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94200424 Expired - Fee Related CN2184140Y (en) | 1994-01-14 | 1994-01-14 | Chain-type hand operated boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2184140Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588367A (en) * | 2017-09-22 | 2018-01-16 | 广州市永科光电科技有限公司 | A kind of LED office lighting light fixtures of easy cleaning spot |
-
1994
- 1994-01-14 CN CN 94200424 patent/CN2184140Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588367A (en) * | 2017-09-22 | 2018-01-16 | 广州市永科光电科技有限公司 | A kind of LED office lighting light fixtures of easy cleaning spot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |