CN2292283Y - Gripping-force measurer - Google Patents
Gripping-force measurer Download PDFInfo
- Publication number
- CN2292283Y CN2292283Y CN 97216613 CN97216613U CN2292283Y CN 2292283 Y CN2292283 Y CN 2292283Y CN 97216613 CN97216613 CN 97216613 CN 97216613 U CN97216613 U CN 97216613U CN 2292283 Y CN2292283 Y CN 2292283Y
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- lever
- mentioned
- force
- boss
- elastic body
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Abstract
The utility model relates to a gripping-force measurer, comprising an outer gripping handle, an inner gripping handle arranged in the outer gripping handle, a force measuring sensor connected with the inner gripping handle and a detecting display device arranged in a housing. The utility model is characterized in that the force measuring sensor is an elastic body beam having a plurality of dummy clubs, and the force measuring sensor is connected with the inner gripping handle through gripping-distance regulating device. Due to the adoption of a resistance strain type sensor, the elastic body beam of the gripping-force measurer has simple structure, and the utility model has firmness, low production cost, convenient and simple use and operation and accurate measurement without being affected by the eccentric load of external force and is suitable for gripping-force measuring requirement of each hand type.
Description
The utility model relates to a kind of gripe dynamometer, particularly, relates to a kind of digital display type gripe dynamometer of resistance strain sensor.
Gripe dynamometer is the measurement instrument that detects the staff grip, and the grip index is one of important symbol of weighing the health state, so China's physical examination project has been listed in the detection of grip in.Simultaneously, along with the enhancing of people's health care consciousness, for the effect of understanding motion exercise also needs to detect with gripe dynamometer.
Before, gripe dynamometer mostly is a mechanical type, bears grip with spring or elliptical ring, by the rack drives pointer, carries out reading from index dial.This mechanical type gripe dynamometer, linear all very poor because of being subjected to the restriction of physical construction with repeatability, and its testing result read also not enough intuitive and convenient.Moreover though the reading conveniently of existing digital display type gripe dynamometer testing result, structure is too complicated, and the cost height also is not easy to promote.
The purpose of this utility model provides a kind of accurate, simple in structure, easy to operate gripe dynamometer that detects.
For achieving the above object, gripe dynamometer of the present utility model has: outer lever, be installed on the interior lever in the outer lever, the force cell that is connected with interior lever and be loaded on detection display device in the shell, it is characterized in that, above-mentioned force cell is the elastic body beam with a plurality of boss, and above-mentioned force cell is connected with above-mentioned interior lever by holding apart from adjusting gear.
Gripe dynamometer of the present utility model is owing to adopt resistance strain gage, and the elastic body girder construction of sensor is simple, firm, production cost is low, not influenced by the external force unbalance loading, thereby detects accurately.Also have, have in the grip mechanism and hold, can adapt to the hand-type of different people and the needs that grip detects apart from adjusting gear, thus use when operating, simple and convenient.
Fig. 1 is the structural representation of the utility model gripe dynamometer.
Fig. 2 a, 2b, 2c are the annexation figure of vertical view, front elevation and each resistance strain gage of representing the sensor elastomer beam respectively.
Fig. 3 is the grip mechanism of this novel gripe dynamometer and the structure major part enlarged drawing of sensor.
Fig. 4 is that the stressed back of explanation sensor elastomer moment of flexure is along the beam length distribution plan.
Below, in conjunction with above-mentioned accompanying drawing, describe embodiment of the present utility model in detail.
Fig. 1 is the structural representation of the utility model gripe dynamometer.This gripe dynamometer by shell, grip mechanism, hold apart from adjusting gear, detect display device and constitute.As shown in Figure 1, shell 5 is a flat box, the sealing of one end, and other end peristome is equipped with grip mechanism.The detection display device that is made of testing circuit plate 7 and display 8 is housed in this shell 5, in the face of this display 8, corresponding position on shell 5 is provided with a display window 9, so that when using gripe dynamometer to detect, and can be from the shown grip numerical value of display window 9 read-out displays 8.In addition, a side of this shell 5 also is provided with power switch button 10, is used for the switch on and off power supply, so that the power supply of the detection display device when needing on circuit board 7.
The grip mechanism of this gripe dynamometer as shown in Figure 1, has: outer lever 1, interior lever 2, positioning boss 3 and hold apart from adjusting gear 4.Outer lever 1 is one and slightly is ＂ mouth ＂ word annular rigid body.The inboard of the and arranged on left and right sides frame of the ＂ mouth ＂ font annular solid of outer lever 1 respectively is provided with a sliding tray.The upper side frame of outer lever 1 is provided with to be held apart from adjusting gear 4, and holding apart from adjusting gear 4 is the power bars 12 with roll adjustment handwheel, and this power bar 12 passes outer lever 1, lever 2 and force cell 11 in connecting.Pass through the distance between interior lever of screw thread scalable and outer lever on the rotating force bar 12.The bottom of outer lever 1 is for ease of applying the handle portion of grip.Interior lever 2 is inlaid in the outer lever 1, be flat ＂ mouth ＂ word annular solid, the outer survey of its left and right two frames respectively is provided with a positioning boss 3, this positioning boss 3 is installed in the sliding tray of outer lever, and level and smooth moving in the sliding tray of lever 1 outside, in being used to prevent lever 2 rotate and reduce with outer lever 4 between the friction force of generation when mobile.And the frame that refers to of shaking hands of interior lever 2 is made the shape that is suitable for handle, so as the grip by hand make in during outside levers 1 pulling of lever 2 application of force of detection can stablize.
Below, the structure of relevant sensor is described.The structure of sensor is shown in the front elevation of the vertical view of Fig. 2 a and Fig. 2 b, and force cell 11 is to be made of force bearing plate 13, elastic body beam 14 and resistance strain gage R1-R4.Elastic body beam 14 is made by resilient material, and the one side is pasted with four resistance strain gage R1, R2, R4 and R3, and its opposite side is provided with three boss, is respectively the left positioning boss 11a at two ends, right positioning boss 11b and central boss 11c.The two ends boss, promptly left positioning boss 11a and right positioning boss 11b stretch out higher than the boss of central boss 11c, and each boss central part is provided with screw 15a, 15b and 15c.Resistance strain gage R1-R4 adopts commercially available prod (for example, Electrical Measuring Instrument factory in Central Plains, Shaanxi makes).Each resistance strain gage R1-R4 connects by the electric bridge mode, and shown in Fig. 2 c, the node of the node of resistance strain gage R1 and R4 and R2 and R3 adds power supply voltage, and the node output signal U of resistance strain gage R1 and R2, R3 and R4
0
In addition, force bearing plate 13 is rectangle laths, and its size is the same with the vertical view size of sensor 11.Set screw 15a, 15b and the 15c counterpart of the boss central part of force bearing plate 13 and elastic body beam 14 is respectively equipped with through hole.Force cell 11 as shown in Figure 3,, is screwed in outer lever 1 together with force bearing plate 13 left positioning boss 11a and right positioning boss 11b with screw.In addition, elastic body beam 14 also can combine with force bearing plate 13 and form as a whole framed structure form.
Below, further specifying the grip mechanism of relevant gripe dynamometer and the annexation of sensor, Fig. 3 shows the major part enlarged drawing.Hold the structure division enlarged drawing that is connected with force cell 11 apart from adjusting gear 4.Outer lever 1 and the upper side frame middle part of interior lever 2 and the middle part of force bearing plate 13 respectively be provided with a through hole, and these through holes are coaxial.Hold and have annular knurl apart from adjusting gear 4 and transfer square handwheel and connected power bar 12, in the through hole of lever 2 was fixed in rotationally in power bar 12 passed on the upper side frame of lever 2.This power bar 12 is screwed in the screw of force-measuring sensing 11 elastic body beams after passing the through hole of outer lever 1 and force bearing plate 13 again, rotates annular knurl and transfers the square handwheel just can adjust the distance of interior lever 2 with respect to outer lever 1.
Below, the principle of work of force cell is described by Fig. 4.As shown in Figure 4, to elastic body beam 14, (for example apply one along the power of the direction of arrow, by power bar 12) because elastic body beam 14 is subjected to the effect of moment of flexure, make some place of elastic body beam upper surface be subjected to the effect of pulling force, the effect that some place is stressed, thereby make strain ga(u)ge produce foil gauge.Resistance strain gage R1 and R3 resistance value reduce, and the resistance value of strain ga(u)ge R2 and R4 increases, electric bridge out of trim, output signal voltage U
0Output voltage U
0Size, be directly proportional with the application of force, just can measure grip accurately.Certainly, if having departed from the range of linearity, measured value also can be compensated by the processing of single-chip microcomputer.
The testing circuit plate 7 of gripe dynamometer of the present utility model and display 8 adopt conventional way, and therefore explanation is omitted.Below, the principle of work of this gripe dynamometer is described.When people's 10 energized that push button, hold the outer lever of gripe dynamometer and interior lever when afterburning, lever 2 in the pulling, outwards lever 1 is close, drive bar 12 outwards moves, so grip just acts on the elastic body beam 14 of force cell 11, make resistance strain gage stressed and change resistance value, thus the signal voltage U that output is measured
0Signal voltage U
0, the amplifier of circuit board 7, A/D converter after digital quantity input single-chip microcomputer (CPU) being handled, carry out digital display by LCD 8 again after testing.Just can obtain grip from the display reading.
Gripe dynamometer of the present utility model is owing to adopt resistance strain gage, and the elastic body girder construction of sensor is simple, firm, production cost is low, do not like to be subjected to the external force unbalance loading to influence, thereby detects accurately.Also have, have in the grip mechanism and hold apart from adjusting gear, the needs that the hand-type of applicable different people and grip detect, thus use when operating, simple and convenient.
Claims (6)
1, a kind of gripe dynamometer, have: outer lever, be installed on the interior lever in the outer lever, the force cell that is connected with interior lever and be loaded on detection display device in the shell, it is characterized in that, above-mentioned force cell is the elastic body beam with a plurality of boss, and above-mentioned force cell is connected with above-mentioned interior lever by holding apart from adjusting gear.
2, gripe dynamometer according to claim 1 is characterized in that, above-mentioned elastic body beam has three boss, and the two ends boss stretches out height than the boss at middle part.
3, gripe dynamometer according to claim 1 and 2 is characterized in that, the boss side of above-mentioned elastic body beam is provided with force bearing plate.
4, gripe dynamometer according to claim 3 is characterized in that, above-mentioned elastic body beam and force bearing plate are the framed structures that forms an integral body.
According to claim 1,2 or 4 each described meters of holding, it is characterized in that 5, above-mentioned to hold apart from adjusting gear be the power bar with roll adjustment handwheel, above-mentioned power bar passes outer lever, lever and force cell in connecting.
6, gripe dynamometer according to claim 3 is characterized in that, the outside of the both sides frame of above-mentioned interior lever is provided with positioning boss, and above-mentioned positioning boss is installed in the sliding tray of outer lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216613 CN2292283Y (en) | 1997-05-28 | 1997-05-28 | Gripping-force measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216613 CN2292283Y (en) | 1997-05-28 | 1997-05-28 | Gripping-force measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2292283Y true CN2292283Y (en) | 1998-09-23 |
Family
ID=33933469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97216613 Expired - Lifetime CN2292283Y (en) | 1997-05-28 | 1997-05-28 | Gripping-force measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2292283Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444862A (en) * | 2014-09-05 | 2016-03-30 | 北京大学第一医院 | Peritoneal dialysis lean body mass detection device |
| CN105796120A (en) * | 2016-04-29 | 2016-07-27 | 江苏领康电子科技发展有限公司 | Hand dynamometer |
-
1997
- 1997-05-28 CN CN 97216613 patent/CN2292283Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444862A (en) * | 2014-09-05 | 2016-03-30 | 北京大学第一医院 | Peritoneal dialysis lean body mass detection device |
| CN105796120A (en) * | 2016-04-29 | 2016-07-27 | 江苏领康电子科技发展有限公司 | Hand dynamometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |