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Speed sensor

A speed sensor, fixing plate technology, applied in the direction of using optical device to transmit sensing member, using electro-magnetic device to transmit sensing member, using electro-magnetic method, etc., can solve the problem of high production cost, troublesome installation, Complex structure and other problems, to achieve the effect of low production cost, simple structure and easy operation

Inactive Publication Date: 2008-08-27
NINGBO YUNSHENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned speed sensor is on the same side as the resistance transmission device that produces the resistance feeling and the rocker arm, so even if the other side with the control circuit board is sealed, the side with the rocker arm is not easy to be completely sealed, thus causing the resistance sensor device to be easy. Dust accumulation will affect the performance of the speed sensor over time
Also because the resistance transmission device adopts a double spring structure, the whole structure uses three springs, resulting in a relatively complicated whole structure, so the production cost is high and the installation is troublesome

Method used

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Embodiment Construction

[0019] The present invention will be further described in detail below with reference to the embodiments of the drawings.

[0020] Such as figure 2 As shown, the speed sensor includes an operating member 1, a torsion spring 2, a fixed plate 4, a shaft 5, a rocker arm 6, and a photoelectric control board 7. The rocker arm 6 and the operating member 1 are respectively limited by the shaft 5 on two sides of the fixed plate 4 .

[0021] The above-mentioned operating member 1 is composed of a control rod 11 and a resistance rod 12. One end of the control rod 11 and the resistance rod 12 is connected at an angle, and there is an extension section 13 outside the shaft hole at the connection point for placing a spiral end of the torsion spring 2 21. A washer 3 is added to fix the torsion spring 2 on the extension 13 of the operating member 1, and a magnetic steel 15 is placed in the middle of the control rod 11.

[0022] The above-mentioned control rod 11 is provided with a control piece...

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Abstract

A speed transducer consists of operation element, torsional spring, fixing plate, shaft, swinging arm and photoelectric control board .It is featured as forming operation element by control bar and drag bar as well as extended section, inserting one spiral end of torsional spring in slot of regulation plate and jacketing another spiral end on extended section of operation element for limiting it on fixing plate, leaning one active edge of torsional spring against on spacing column of fixing plate and setting another active edge in another slot of regulation plate .

Description

Technical field [0001] The invention relates to a speed sensor, in particular to a speed sensor for industrial sewing machines. Background technique [0002] The speed sensor used on the existing industrial sewing machine includes a photoelectric control board, a control part (not shown in the figure), and a fixing plate 4. The photoelectric control board and the control part are fixed on one side of the fixing plate 4, and the control part is connected to the The other side of the fixed plate is connected to the rocker arm 10, the proximal end of the rocker arm 10 is tightened by the tension spring 101 to position the rocker arm 10, and a resistance transmission device is provided on the fixed plate 4 corresponding to the middle of the rocker arm 10. The resistance transmission The device is composed of a limit block 108, a movable rod 109, inner and outer springs 105, 103 and an upper locator 102. One end of the movable rod 109 rests on the arm of the rocker arm 10, the other e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/12G01D5/26G01P3/42
Inventor 竺韵德王卫
Owner NINGBO YUNSHENG