Hand-operated mechanism of band tape
A hand-crank, tape measure technology, applied in the direction of a bendable ruler, etc., to prevent accidental touch or accidental touch, easy to carry and use, and prevent injury accidents.
Inactive Publication Date: 2009-06-10
NINGBO GREAT WALL PRECISION INDAL
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- Abstract
- Description
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Problems solved by technology
Its structure is simple and the cost is low. However, the core and the hand-operated device rotate together without a clutch mechanism, so there are inevitably the aforementioned safety problems.
Method used
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Embodiment Construction
[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] As shown in the figure, the numbers of the drawings are rear scale case 1, front scale case 2, motor 3, pinion gear 4, transition gear 5, small bearing 6, large gear 7, scale core clutch disc 8, scale belt 9, large bearing 10. Battery 11, wire 12, switch 13, switch button 14, hand cover 15, hand cover fixing ring 16, hand handle positioning column 17, hand handle 18, hand cover 19, clutch claw 20, clutch claw Positioning column 21, torsion spring 22, housing 23, ruler core plate 24, housing main body 25, handle 26, battery chamber 27, groove 28, jack 29, card slot 30, card foot 31, guide groove 32, Teeth or ribs 33 .
[0020] In this implementation example, see figure 2 , 4 , 5, a hand-operated device is also provided in the middle part of the housing 23, which is convenient for hand-operated recovery of the tape. Main components s...
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The invention provides a hand-operated mechanism of a tapeline and comprises a hand-operated cover. The edge of the hand-operated cover is arranged in a shell in a rotating way through the fixed ring of the hand-operated cover; at least a jack socket is molded on the external surface of the hand-operated cover; a positioning column for the hand-operated handle of the hand-operated cover is connected with the hand-operated handle in a rotating way; one end of the hand-operated handle is provided with a hand-operated sleeve which can be inserted into the jack socket; in addition, the internal side of the handle-operated cover is connected with an on-off claw through the positioning column for the on-off claw in a rotating way and the on-off claw is close to the position of the jack socket; the positioning column for the on-off claw is sleeved with a torsion spring and one end of the torsion spring abuts with the wall surface of the hand-operated cover; the claw end of the on-off claw conducts on-off coordination with an on-off disk tooth or a raised line molded on a ruler core disk, meanwhile, the side edge of the on-off claw abuts with and matches with the hand-operated sleeve inserted into the jack socket so that the invention has more convenient use and the hand-operated device cannot rotate when a ruler belt is pulled out, and therefore, the invention can avoid wounding accident; the invention has compact and reasonable structure, safe and reliable work as well as easy use, moreover, the invention is portable and practical and can avoid mis-collision or mis-touch.
Description
technical field [0001] The invention relates to a hand crank mechanism of a tape measure. Background technique [0002] The measuring tape is one of the indispensable tools in the measurement. It is widely used in various environments such as construction and industry. The tape with a long tape is generally recovered by a hand-operated mechanism. The general hand-operated mechanism is composed of a hand-operated cover. , hand handle, hand cover, etc., the general hand mechanism and the core are fixed together, pull out the tape, the core and the hand device rotate together, and the defect of this design is that when the tape is pulled out , The hand-operated device also needs to be rotated when it is not in use, so that the user can easily injure his hands if he is not too small, so this structure needs further improvement. [0003] For example, the Chinese patent "hand-operated tape measure" with the patent No. 01255096.5 discloses a tape measure in the above-mentioned bac...
Claims
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IPC IPC(8): G01B3/10
Inventor 黄忠华
Owner NINGBO GREAT WALL PRECISION INDAL