CN104596872A - Hardness measurement instrument for memory sponge and measurement method thereof - Google Patents
Hardness measurement instrument for memory sponge and measurement method thereof Download PDFInfo
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- CN104596872A CN104596872A CN201410835750.0A CN201410835750A CN104596872A CN 104596872 A CN104596872 A CN 104596872A CN 201410835750 A CN201410835750 A CN 201410835750A CN 104596872 A CN104596872 A CN 104596872A
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- qualimeter
- memory foam
- pressure foot
- cover body
- chaining pin
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Abstract
The invention provides a hardness measurement instrument for memory sponge. The hardness measurement instrument for memory sponge comprises a display end, a sensing device and a press foot, wherein the sensing device is installed at the lower end of the display end; the sensing device comprises a base, a detection mechanism and a detection needle; the base is installed at the lower end of the display end; the base comprises a cover body and a fixing ring; the fixing ring is installed at the middle part of the cover body; one end of the detection mechanism is connected with the cover body, and the other end of the detection mechanism is connected with the detection needle; the press foot is of a hollow cylindrical structure; the detection needle penetrates through and is connected with the press foot; the base is connected with the press foot through a thread structure; a support ring extending outwards is arranged at the bottom end of the press foot; the height of the detection needle stretching out of the bottom surface of the press foot is 2.5 millimetres. The hardness measurement instrument for memory sponge provided by the invention is high in test result accuracy, small in size, convenient to carry, simple to operate, and suitable for hardness detections on various types of memory sponge.
Description
Technical field
The present invention relates to a kind of instrument and measuring method thereof of testing material hardness, particularly relate to a kind of memory foam qualimeter and measuring method thereof.
Background technology
Hardness-testing device is the instrumentation of the skin hardness for measuring coating.Hardness-testing device is divided into bench mounted hardness tester, portable hardometer two kinds, wherein portable hardness-testing device integrates the portable hardometers such as Richter scale, Bu Shi, Rockwell, freely changing of 7 kinds of different hardness values can be realized, eliminate sclerometer in the past to need manually to search scale of hardness and carry out tired Suo Chengxu, achieve the feature of intellectuality truly, portability.At present, portable hardness-testing device in the middle of approach application to the hardness measurement of various material, but in memory foam hardness measurement field, can only realize general sponge hardness measurement, and for the hardness measurement of memory foam, the method for there is no can realize.
Summary of the invention
The object of the present invention is to provide a kind of measuring instrument that can measure the hardness of memory foam and method of testing thereof.
The first object of the present invention is to provide a kind of memory foam qualimeter, comprise display end, sensing device and pressure foot, described sensing device is arranged on the lower end of display end, it is characterized in that: described sensing device comprises pedestal, testing agency and chaining pin, described pedestal is arranged on the lower end of display end, described pedestal comprises cover body and set collar, the middle part of the cover body that set collar is arranged on, testing agency one end is connected with cover body, the other end is connected with chaining pin, described pressure foot is hollow cylindrical structure, chaining pin is through connecting pressure foot, and pedestal is connected by helicitic texture with pressure foot, the bottom of described pressure foot is provided with outward extending support ring, it is 2.5 millimeters that chaining pin stretches out pressure plantar surfaces of toe height.
Further, described display end bottom is provided with web member, and web member inwall is provided with internal thread.
Further, described cover body is hollow structure, and the upper end of cover body is fixed on the web member of display end bottom.
Further, the bottom of described cover body is provided with sleeve, sleeve is have external thread, sleeve is provided with a holding part, and holding part is used for top supporting spring, and holding part can be moved up and down by helicitic texture on sleeve.
Further, the lower end of described set collar is provided with the external thread link for being fixedly connected with pressure foot.
Further, described testing agency comprises central slide axle, inductive coil, inductor and spring, described central slide axle one end is fixed on pressure foot, the other end extend in cover body, inductor is arranged in the sleeve of cover body lower end, inductive coil is arranged on central slide axle, and corresponding with sensor location, and spring housing is located at central slide axle lower end.
Further, described spring one end is fixed on chaining pin, and the other end holds on holding part.
Further, described chaining pin main body is cylindrical, and its top is provided with one and connects part cover.
Another object of the present invention is to provide a kind of detection method of described memory foam qualimeter, comprises the following steps:
(1), qualimeter is returned to zero;
(2), memory foam sample is placed in a hard and on the surface of level, require memory foam sample thickness at least more than 10mm, vertically keep sclerometer, make its chaining pin 23 at least from each side 10mm of sample, quick friction, without making chaining pin 23 prop up sample to make chaining pin 23 and keep between sample contacting closely with impacting, and keep pressure foot to be parallel to specimen surface, to make chaining pin 23 vertically on specimen surface;
(3), under the Action of Gravity Field of tester self, chaining pin 23 part is pressed in pressure foot 3, after inductor senses that inductive coil moves, according to the distance judging movement, control circuit is had to calculate hardness number according to the Data Comparison of measured value and storage again, treat to depress completely, with in sample contacts 1-3 second, read scale value to integer word and record its result.
(4), become every 3 of at least 6mm distribution or 5 different some places on sample, respectively once to measure, get the mean value of these measured values as hardness number.
In step 2 above, specimen surface all should smooth, smooth, do not have the defect such as mechanical damage and impurity.
The present invention compared with prior art, test result accuracy of the present invention is high, central slide axle arranges an inductive coil, and measured by inductor, thus make the distance minimization between central slide axle and coil so that more accurate test result can be reached, sheathed spring outside central slide axle simultaneously, carry out presetting to the elasticity number of spring, hardness number is calculated by the displacement size of central slide axle and the elasticity number of spring, ensure that the precision of detection, this qualimeter compact simultaneously, easy to carry, simple to operate, be applicable in the middle of various memory foam hardness determination.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of described memory foam qualimeter of the present invention;
Accompanying drawing 2 is structural representations of sensing device shown in accompanying drawing 1 and pressure foot.
Accompanying drawing 3 is that the present invention is hit by a bullet the linear relationship chart of force value N and gauge block thickness L.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually, below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1 and Figure 2, a kind of memory foam qualimeter, comprise display end 1, sensing device 2 and pressure foot 3, described sensing device 2 is arranged on the lower end of display end 1, described sensing device 2 comprises pedestal 21, testing agency 22 and chaining pin 23, described pedestal 21 is arranged on the lower end of display end 1, testing agency 22 one end is connected with pedestal 21, the other end is connected with chaining pin 23, described pressure foot 3 is hollow cylindrical structure, chaining pin 23 is through connecting pressure foot 3, and pedestal 21 is connected by helicitic texture with pressure foot 3, and it is 2.5 millimeters that chaining pin 23 stretches out pressure foot 3 floor height.
Described display end 1 is provided with display screen 11 and button 12, coherent detection program can be set by button 12, and testing result is shown by display screen 11, described display end 1 inside is provided with testing circuit (scheming not shown), testing circuit is built-in with and stores data and trace routine, can calculate the data detected and store; Described display end 1 bottom is provided with web member 13, and web member 13 inwall is provided with internal thread.
Described pedestal 21 comprises cover body 211 and set collar 212, described cover body 211 is hollow structure, the upper end of cover body 211 is fixed on the web member 13 of display end 1 bottom, further, the middle part of cover body 211 is provided with external thread, both is connected and fixed by the screw-internal thread fit of this external thread and web member 13; The bottom of cover body 211 is provided with sleeve 213, sleeve 213 has external thread, sleeve 213 is provided with a holding part 214, holding part 214 is for top supporting spring, holding part 214 can be moved up and down by helicitic texture on sleeve 213, the middle part of the cover body 211 that described set collar 212 is arranged on, the lower end of set collar 212 is provided with external thread link, for being fixedly connected with pressure foot 3.
Described testing agency 22 comprises central slide axle 221, inductive coil (scheming not shown), inductor (scheming not shown) and spring 222, described central slide axle 221 one end is fixed on pressure foot 3, the other end extend in cover body 211, inductor is arranged in the sleeve 213 of cover body 211 lower end, inductive coil is arranged on central slide axle 221, and it is corresponding with sensor location, spring 222 is set in central slide axle 221 lower end, spring 222 one end is fixed on chaining pin 23, the other end holds on holding part 214, when chaining pin 23 receives the elastic force of sponge, probe 23 Compress Spring 222, and then promotion central slide axle 221 moves inward, now inductor can be calculated by the hardness of shift length to sponge of the inductive coil on induction central slide axle 221, thus obtain hardness number.
Described chaining pin 23 main body is cylindrical, its top is provided with one and connects part cover 231, connect part cover 231 to match with central slide axle 221 shape and size, central slide axle 221 companys of being inserted into part overlaps 231 interior and be adhesively fixed by glue, is promoted the movement of central slide axle 221 by chaining pin 23.
Described pressure foot 3 is the making of wolfram steel material, the inwall of its cylindrical upper end is provided with internal thread, external thread for the lower end with set collar 212 is connected, further, in order to ensure correctness and the stability of detection, the bottom of described pressure foot is provided with outward extending support ring 31, and the weight of pressure foot 3 is 50 ± 5 grams.
Measuring principle of the present invention is as follows: under the Action of Gravity Field of tester self, a chaining pin part is pressed in pressure foot, after inductor senses the inductive coil moving displacement on central slide axle, data are sent to testing circuit, and testing circuit calculates hardness number according to the Data Comparison of measured value and storage.
The present invention is based on shore hardness method of testing, first need to give a forecast calculation to the elastic force of spring used, obtain through lot of experimental data, the span of the value of elastic N of the spring that the present invention uses for 10.3061N-20.4082N direct, and derive draw value of elastic N and gauge block thickness L linear relationship chart as shown in Figure 3:
In Fig. 3:
H
0for chaining pin stretches out the preset height value of pressure plantar surfaces of toe, in the present invention, h
0it is 2.5 millimeters;
The depth value of the chaining pin press-in pressure foot that the load of qualimeter itself causes when e is measurement;
According to above-mentioned linear relationship, the computing formula that can obtain hardness number (H) is:
H＝100-40L
By above-mentioned formula, it is 1-100H that the qualimeter that the present invention obtains can measure durometer level.
Detection method of the present invention comprises the following steps:
1, qualimeter is returned to zero;
2, memory foam sample is placed in a hard and on the surface of level, require memory foam sample thickness at least more than 10mm, vertically keep sclerometer, make its chaining pin 23 at least from each side 10mm of sample, quick friction, without making chaining pin 23 prop up sample to make chaining pin 23 and keep between sample contacting closely with impacting, and keep pressure foot to be parallel to specimen surface, to make chaining pin 23 vertically on specimen surface;
3, under the Action of Gravity Field of tester self, chaining pin 23 part is pressed in pressure foot 3, after inductor senses that inductive coil moves, according to the distance judging movement, control circuit is had to calculate hardness number according to the Data Comparison of measured value and storage again, treat to depress completely, with in sample contacts 1-3 second, read scale value to integer word and record its result.
4, become on sample every 3 of at least 6mm distribution or 5 different some places, respectively once to measure, get the mean value of these measured values as hardness number.
In step 2 above, specimen surface all should smooth, smooth, do not have the defect such as mechanical damage and impurity.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a memory foam qualimeter, comprise display end (1), sensing device (2) and pressure foot (3), described sensing device (2) is arranged on the lower end of display end (1), it is characterized in that: described sensing device (2) comprises pedestal (21), testing agency (22) and chaining pin (23), described pedestal (21) is arranged on the lower end of display end (1), described pedestal (21) comprises cover body (211) and set collar (212), the middle part of the cover body (211) that set collar (212) is arranged on, testing agency (22) one end is connected with cover body (211), the other end is connected with chaining pin (23), described pressure foot (3) is hollow cylindrical structure, chaining pin (23) is through connecting pressure foot (3), and pedestal (21) is connected by helicitic texture with pressure foot (3), the bottom of described pressure foot (3) is provided with outward extending support ring (31), the weight of pressure foot (3) is 50 ± 5 grams, it is 2.5 millimeters that chaining pin (23) stretches out pressure foot (3) floor height.
2. memory foam qualimeter according to claim 1, is characterized in that: described display end (1) bottom is provided with web member (13), and web member (13) inwall is provided with internal thread.
3. memory foam qualimeter according to claim 1, it is characterized in that: described cover body (211) is hollow structure, the upper end of cover body (211) is fixed on the web member (13) of display end (1) bottom.
4. memory foam qualimeter according to claim 1, it is characterized in that: the bottom of described cover body (211) is provided with sleeve (213), to sleeve (213) have external thread, sleeve (213) is provided with a holding part (214), holding part (214) is for top supporting spring, and holding part (214) can be moved up and down by helicitic texture on sleeve (213).
5. memory foam qualimeter according to claim 1, is characterized in that: the lower end of described set collar (212) is provided with the external thread link for being fixedly connected with pressure foot (3).
6. memory foam qualimeter according to claim 1, it is characterized in that: described testing agency (22) comprises central slide axle (221), inductive coil, inductor and spring (222), described central slide axle (221) one end is fixed in pressure foot (3), the other end extend in cover body (211), inductor is arranged in the sleeve (213) of cover body (211) lower end, inductive coil is arranged on central slide axle (221), and it is corresponding with sensor location, spring (222) is set in central slide axle (221) lower end.
7. memory foam qualimeter according to claim 6, is characterized in that: described spring (222) one end is fixed on chaining pin (23), and the other end holds on holding part (214).
8. memory foam qualimeter according to claim 1, is characterized in that: described chaining pin (23) main body is cylindrical, and its top is provided with one and connects part cover (231).
9. the measuring method of the memory foam qualimeter according to claim 1-8 any one, is characterized in that: comprise the following steps:
(1), qualimeter is returned to zero;
(2), memory foam sample is placed in a hard and on the surface of level, require memory foam sample thickness at least more than 10mm, vertically keep sclerometer, make its chaining pin (23) at least from each side 10mm of sample, quick friction, without making chaining pin (23) prop up sample to make chaining pin (23) and keep between sample contacting closely with impacting;
(3), under the Action of Gravity Field of tester self, chaining pin (23) part is pressed in pressure foot (3), after inductor senses that inductive coil moves, according to the distance judging movement, control circuit is had to calculate hardness number according to the Data Comparison of measured value and storage again, treat to depress completely, with in sample contacts 2-3 second, read scale value to integer word and record its result;
(4), become every 3 of at least 6mm distribution or 5 different some places on sample, respectively once to measure, get the mean value of these measured values as hardness number.
10. the measuring method of memory foam qualimeter according to claim 9, is characterized in that: described specimen surface all should smooth, smooth, do not have the defect such as mechanical damage and impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835750.0A CN104596872A (en) | 2014-12-29 | 2014-12-29 | Hardness measurement instrument for memory sponge and measurement method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835750.0A CN104596872A (en) | 2014-12-29 | 2014-12-29 | Hardness measurement instrument for memory sponge and measurement method thereof |
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| CN104596872A true CN104596872A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410835750.0A Pending CN104596872A (en) | 2014-12-29 | 2014-12-29 | Hardness measurement instrument for memory sponge and measurement method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883862A (en) * | 2019-03-29 | 2019-06-14 | 巨石集团有限公司 | A kind of yarn group's qualimeter and its measurement method |
Citations (8)
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| GB2327504A (en) * | 1997-07-18 | 1999-01-27 | Hampden Test Equipment Ltd | Durometer with interchaneable heads |
| JP2003322608A (en) * | 2002-05-01 | 2003-11-14 | Symbolic Atorii:Kk | Measuring apparatus for deterioration degree of elastic body |
| CN1556387A (en) * | 2004-01-06 | 2004-12-22 | 武汉大学 | Portable full digital direct testing universal hardness meter |
| CN1789962A (en) * | 2004-12-16 | 2006-06-21 | 吴绍明 | Hardness testing device |
| CN201909745U (en) * | 2010-12-31 | 2011-07-27 | 广州市宜华家具有限公司 | Dual-purpose sponge tester |
| CN202305352U (en) * | 2011-10-18 | 2012-07-04 | 温州市海宝仪器有限公司 | Digital display sclerometer |
| CN202471531U (en) * | 2012-03-13 | 2012-10-03 | 沈阳天星试验仪器有限公司 | Portable digital display hardness tester |
| CN203025056U (en) * | 2012-12-31 | 2013-06-26 | 广东睡眠一百分床垫网股份有限公司 | User-defined type portable mattress hardness measurement instrument |
-
2014
- 2014-12-29 CN CN201410835750.0A patent/CN104596872A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2327504A (en) * | 1997-07-18 | 1999-01-27 | Hampden Test Equipment Ltd | Durometer with interchaneable heads |
| JP2003322608A (en) * | 2002-05-01 | 2003-11-14 | Symbolic Atorii:Kk | Measuring apparatus for deterioration degree of elastic body |
| CN1556387A (en) * | 2004-01-06 | 2004-12-22 | 武汉大学 | Portable full digital direct testing universal hardness meter |
| CN1789962A (en) * | 2004-12-16 | 2006-06-21 | 吴绍明 | Hardness testing device |
| CN201909745U (en) * | 2010-12-31 | 2011-07-27 | 广州市宜华家具有限公司 | Dual-purpose sponge tester |
| CN202305352U (en) * | 2011-10-18 | 2012-07-04 | 温州市海宝仪器有限公司 | Digital display sclerometer |
| CN202471531U (en) * | 2012-03-13 | 2012-10-03 | 沈阳天星试验仪器有限公司 | Portable digital display hardness tester |
| CN203025056U (en) * | 2012-12-31 | 2013-06-26 | 广东睡眠一百分床垫网股份有限公司 | User-defined type portable mattress hardness measurement instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883862A (en) * | 2019-03-29 | 2019-06-14 | 巨石集团有限公司 | A kind of yarn group's qualimeter and its measurement method |
| CN109883862B (en) * | 2019-03-29 | 2024-04-05 | 巨石集团有限公司 | Yarn ball hardness measuring instrument and measuring method thereof |
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Application publication date: 20150506 |
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