CN203455266U - Manual four-linkage sample holder - Google Patents
Manual four-linkage sample holder Download PDFInfo
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- CN203455266U CN203455266U CN201320516955.3U CN201320516955U CN203455266U CN 203455266 U CN203455266 U CN 203455266U CN 201320516955 U CN201320516955 U CN 201320516955U CN 203455266 U CN203455266 U CN 203455266U
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- guide rod
- slide plate
- steel ball
- manual
- specimen holder
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Abstract
The utility model discloses a manual four-linkage sample holder, comprising a first guide rod, a second guide rod, an elastic slice, an underframe, a steel ball, a guide slide block, a sliding plate, a stop block, a four-hole frame, a base and a pull rod, wherein the steel ball is arranged in a counter bore of the guide slide block, clamped between the guide slide block and the elastic slice and fixed on the sliding plate, the stop block is fixed on the sliding plate, and the sliding plate, the guide slide block, the stop block, the elastic slice and the steel ball are assembled to form an rigid integral sliding plate assembly. The manual four-linkage sample holder is characterized in that a plurality of positioning grooves are formed in at least one of the guide rods.
Description
Technical field
The utility model relates to a kind of intelligent instrumentation/scientific analysis instrument, detecting instrument, especially a kind of manual tetrad specimen holder.
Background technology
Spectrophotometric analysis principle is the analytical approach of utilizing material to set up the selection absorption characteristic of different wavelengths of light.Conventionally utilize prism or grating beam splitting to obtain monochromatic light, make monochromatic light pass through successively continuously solution, and record the absorption of this solution to each wavelength, finally with silicon photocell, receive absorbed light signal, and be reflected on liquid crystal display or on PC with absorbance T% and graphs that modern electronic technology and computer technology change into quantification by light signal.By the analysis to absorption spectrum, the structure of matter and chemical analysis that just can discriminatory analysis object.Can be widely used in the industries such as chemical industry, medicine, biochemistry, metallurgy, light industry, weaving, material, environmental protection, medical science chemical examination, education, be one of quality control instrument important in analytical test industry, is the indispensable instrument of Routine Test Lab.
Fig. 1 is ultraviolet-visible pectrophotometer light path system figure, and as can be seen from Figure 1, a ultraviolet-visible pectrophotometer light path system is mainly comprised of light source 100, monochromator 200, sample chamber 300, detection amplification control system 400 4 major parts.
Optical system workflow is: as Fig. 1, the white light that tungsten lamp 1 sends (wavelength is 250-2000nm) is beaten on catoptron 4 by switching mirror 2 change directions, through catoptron 4, pools picture (rectangular light spot) to entering on slit 5; Or the pink (wavelength is 185-400nm) that sends of deuterium lamp 3, because making to switch mirror 2, now programmed control lifts, so just directly beat on catoptron 4, through catoptron 4, pool picture (circular light spot) to entering on slit 5.Through entering slit 5 light forward, by plane mirror 6, reflexed on collimating mirror 7.Collimating mirror 7 reflects light to again on ultraviolet grating 8, and because ultraviolet grating 8 has dispersion function, the light reflecting through ultraviolet grating 8 is exactly the monochromatic light bands of a spectrum of being arranged by wavelength size order by monochromatic light.Band impinges upon again on collimating mirror 7, because incident angle changes, the part monochromatic light that impinges upon collimating mirror 7 is reflected to optical filter 9, the light filtering through optical filter 9 impinges upon out again on slit 10, because the light penetrating slit going out on slit 10 is very little, so only have the light of very narrow band (or being specific wavelength), after lens I 11 converges in directive sample 12 solution, the light of specific wavelength is after sample 12 solution absorb, through lens II 13, converge and finally drop on the photoelectric cell 14 that detects amplification control system 400, so far light path system work is complete.
Fig. 2 is the ultraviolet-visible pectrophotometer structural drawing corresponding with Fig. 1.Spectrophotometer, when test solution concentration, needs cuvette 21 as shown in Figure 3 to hold sample solution.Because light path plane has certain altitude, and cuvette 21 is because material is somewhat expensive, can not do very longly, so need to be lifted to light path height by specimen holder 22.In order to improve testing efficiency, allow the laboratory technician once can a plurality of samples of follow-on test, so adopted tetrad specimen holder 22, it has A, B, C, tetra-gears of D can put cuvette 21; Test the sample on which gear, just that gear is pulled in the light path in sample chamber 300, as Fig. 3.
The decomposition texture that Fig. 4 has provided tetrad specimen holder in Fig. 3 forms, and is the first step: slide plate 35, limited block 36 are fixed by 2 M3 flat head screws in conjunction with the assembling process of this structure; Web joint 38, elastic plate 37 by 2 M2 pan-headed screws add bullet, plain cushion is fixed; Limited block 36, web joint 38 by 2 M2.5 pan-headed screws add bullet, plain cushion is fixed.Therefore the slide plate group that slide plate 35, limited block 36, elastic plate 37, web joint 38 form is rigidity one.Second step: press from both sides a steel ball 34 between the elastic plate 37 of above-mentioned slide plate group and four orifice plates 33, and wear with guide rod 1, guide rod 2 32, guide rod 1, guide rod 2 32 and 4 back-up rings of four orifice plate 33 use, 45 cards are firmly fixed.Two circular holes on guide rod 2 32 and slide plate 35 are designed to little gap and are slidably matched, and the locating slot 83 of guide rod 1 and limited block 36 is also slidably matched for little gap, and slide plate group just can be along two guide rod transitional slides like this.During slide plate group transitional slide, the steel ball 34 being stuck in elastic plate 37 holes is also held one slippage (as Fig. 5), because elastic plate 37 is to be made by the thick tin bronze plate of 0.5mm, has good elasticity, make steel ball 34 when having drop up and down, still can firmly be blocked by the circular hole of elastic plate 37.The locating slot that falls into four orifice plates 33 when steel ball 34 is after 90s, can automatic centering, and because of the elastic force latched position of elastic plate 37, unless there is external force to pull, just make steel ball 34 " climb out of " locating slot 90 of four orifice plates 33.The positioning principle of Here it is specimen holder.(as Fig. 5) the 3rd step four hole framves 40 and 4 reeds 1 and 4 reeds 2 41 adopt 12 M2 pan-headed screws to fix, and the effect of reed 1 and reed 2 41 is to eliminate the left and right of cuvette 21 in four hole framves 40 and the gap of former and later two directions.Four hole framves 40 and 2 M3 flat head screws of installing plate 42 use are fixed, form thus four hole frame group 80, four hole frame groups 80 and slide plate group with 2 M3 pan-headed screws add bullet, plain cushion is fixed together.Pull bar 43 one end adopt screw thread and slide plate 35 to fix, and pull bar 43 other ends adopt screw threads and drawhead 44 to fix, and so far pull drawhead 44 just can easily move four hole frame groups 80, to realize the movement of cuvette position.As Fig. 5, because four hole frame 40 light hole 84 centre distance are that 19 ± 0.1mm is identical with four orifice plate 33 locating slot 90 centre distance, thereby realized four gears, can pass through 300 light path centers, sample chamber, meet once can a plurality of samples of follow-on test requirement.
The shortcoming of above-mentioned tetrad specimen holder is: (1) shown in Figure 5, in use, four orifice plate 33 installed surfaces and 300 bottom surfaces, spectrophotometric sample chamber of tetrad specimen holder are be fixed together (with reference to Fig. 2), and in mounting hole site with 2 M4 pan-headed screws add bullet, plain cushion is fixed, 90 coincidences of the installed surface of specimen holder and the locating slot of specimen holder like this, can interfere, and steel ball 34 in locking with while sliding upper and lower height and position poor be 0.4mm(as Fig. 6 (a) and 6(b), four orifice plates 33 are stainless steel sheet metal components, install and can produce certain distortion.So 90 coincidences of the installed surface of specimen holder and locating slot, are positioned with hidden danger to specimen holder; (2) slide plate 35 is stainless steel sheet metal components, and guide rod 2 32 is stainless steel bars, and two circular holes on slide plate 35 have noise when guide rod 2 32 slides, and need mutually to grind cooperation with abrasive pastes deburring noise-reducing before assembling; (3) the effect of 4 reeds 1 and 4 reeds 2 41 is to eliminate the left and right of cuvette 21 in four hole framves 40 and the gap of former and later two directions, they contact with cuvette 21, for preventing from scratching cuvette, therefore manufacture process requirement is very complicated: material is the tin bronze skin that 0.2mm is thick, spark line cutting blanking, mold bending is shaped, then carries out the processing of electrophoresis ptfe surface.During assembling, need be fixed on four hole framves 40 with 12 M2 pan-headed screws, processing and assembling are all time-consuming.
In addition,, because specimen holder is a directly interactive platform of photometer and experimenter, because being people's intervention, make specimen holder become photometer measurement system main unreliable factor and link in use.Other index is qualified photometer all, and often, because specimen holder location repeatability is bad, each cuvette extended position is different, and causes different students to put down, and out result " varies ", and in fact sample does not change.Specimen holder is vital to photometric use thus.Good specimen holder can allow user get twice the result with half the effort.To develop a kind of reliable, reproducible, easy to make, can to realize production in enormous quantities manual tetrad specimen holder of locating for this reason, with good sexual valence, recently meet the heavy demand of education experiment and production line.
Summary of the invention
For the problems referred to above, the utility model provides a kind of improved manual tetrad specimen holder, separated by the location of steel ball and the installed surface of specimen holder, has guaranteed the reliability of location, and has realized preferably positioning precision, without assembling link, good positioning effect.
In order to realize foregoing invention object, the utility model discloses a kind of manual tetrad specimen holder, comprise the first guide rod, the second guide rod, flexure strip, underframe, steel ball, slider guide, slide plate, limited block, four hole framves, base and pull bar, described steel ball is arranged in the counterbore of described slider guide, and be folded between described slider guide and described flexure strip and be fixed on described slide plate, described limited block is fixed on described slide plate, described slide plate, slider guide, limited block, flexure strip, steel ball are assembled into the slide plate group of rigidity one, it is characterized in that
On described one of them guide rod, offer several locating slots.
Reasonablely be, manual tetrad specimen holder of the present utility model, it is characterized in that, described slide plate group and for described underframe the first guide rod, the second guide rod wear, threaded hole on the thread end of the first guide rod, the second guide rod and described underframe is directly fixing, pilot hole on described the second guide rod and described slider guide is that little gap is slidably matched, and the locating slot of described the first guide rod and described limited block is also slidably matched for little gap.
Reasonablely be, manual tetrad specimen holder of the present utility model, it is characterized in that, when described slide plate group transitional slide, the described steel ball being fastened in described elasticity film perforation is held one slippage, described steel ball is close to the second guide rod all the time, the resistance that described flexure strip regulates described steel ball to slide on the second guide rod, automatic centering after described steel ball falls into the locating slot on the second guide rod.
Reasonablely be, manual tetrad specimen holder of the present utility model, it is characterized in that, fixing one or the four hole frame groups that form of described four hole framves and described base, described four hole frame groups are fixed in described slide plate group, described pull bar one end is fixed with screw thread and described slide plate, and the other end is fixed with screw thread and described drawhead, pulls described drawhead to move described four hole frame groups.
Reasonable, manual tetrad specimen holder of the present utility model, is characterized in that, in the hole slot in described four hole framves, all around direction is provided with shell fragment.
Reasonable, manual tetrad specimen holder of the present utility model, is characterized in that, described flexure strip adopts the thick tin bronze plate of 0.5mm.
The relatively old tetrad specimen holder of manual tetrad specimen holder of the present utility model, processability of product structure is good, and assembling is simple, and cost performance is high, can be mass-produced.
Accompanying drawing explanation
Below, with reference to accompanying drawing, for those skilled in the art, to detailed description of the present utility model, above and other object of the present utility model, feature and advantage will be apparent.
Fig. 1 is ultraviolet-visible pectrophotometer light path system figure of the prior art;
Fig. 2 is Fig. 1 medium ultraviolet visible spectrophotometer structural drawing;
Fig. 3 is four specimen holders and cuvette schematic diagram in Fig. 2;
Fig. 4 is the installation steps structural representation of four specimen holders in Fig. 3;
Fig. 5 is tetrad specimen holder location schematic diagram in Fig. 3;
Fig. 6 (a) and Fig. 6 (b) are respectively the location schematic diagram of tetrad specimen holder steel ball sliding mode, latched position in Fig. 3;
Fig. 7 is the installation steps structural representation of manual tetrad specimen holder of the present utility model;
Fig. 8 is manual tetrad specimen holder of the present utility model location schematic diagram;
Fig. 9 is the decomposition chart of four hole framves in this Fig. 7.
Embodiment
Fig. 7 is structure and the scheme of installation of manual tetrad specimen holder of the present utility model.The parts identical with existing structure comprise guide rod 1, guide rod 2 52, underframe 53, flexure strip 54, steel ball 55, slider guide 56, slide plate 57, limited block 58, four hole framves 59, base 60, drawhead 61 and pull bar 62, special character is, tradition is changed into by the mode of offering locating slot 90 realization location on underframe 53, by one of them guide rod, be illustrated as on guide rod 2 52 and offer four locating slots 521, by guide rod, realize location.
Specifically assembly and be:
First step slide plate 57, slider guide 56 are fixed by 2 M3 flat head screws; Slider guide 56 and flexure strip 54 by 2 M2.5 pan-headed screws add bullet, plain cushion is fixed, and presss from both sides a steel ball 55 between the two before fixing, steel ball 55 is ensconced in the counterbore of slider guides 56 as Fig. 8; Limited block 58 and slide plate 57 are fixed by 2 M3 flat head screws.Therefore the slide plate group 82 of slide plate 57, slider guide 56, limited block 58, flexure strip 54, steel ball 55 assemblings is rigidity one.
The above-mentioned slide plate group 82 of second step and underframe 53 use guide rods 1, guide rod 2 52 wear, and the thread end of guide rod 1, guide rod 2 52 and the threaded hole on underframe 53 are directly fixing.Pilot hole 81 on guide rod 2 52 and slider guide 56 is slidably matched for little gap, and the locating slot 92 of guide rod 1 and limited block 58 is also slidably matched for little gap, and slide plate group 82 just can be along two guide rod transitional slides like this.During slide plate group 82 transitional slide, the steel ball 55 being stuck in flexure strip 54 holes is also held one slippage (as Fig. 8), flexure strip 54 is to be made by the thick tin bronze plate of 0.5mm, there is good elasticity, make steel ball 55 be close to all the time guide rod 2 52, because of the good springiness of flexure strip 54, the resistance that adjustable steel ball 55 slides on guide rod 2 52, remains smooth and easy and slides.When steel ball 55 falls into after the locating slot 521 on guide rod 2 52, meeting automatic centering, therefore steel ball 55 locks the position of slide plate group 82 by the elastic force of flexure strip 54, unless there is external force to pull, just make locating slot 521(that steel ball 55 " climbs out of " guide rod 2 52 as Fig. 8).The positioning principle of Here it is specimen holder.
The 3rd step four hole framves 59 and base 60 adopt 4 M3 flat head screws to fix, and 2 the M3 pan-headed screws of slide plate group 82 use that form four hole frame group 95, four hole frame groups 95 and the first step add bullet, plain cushion is fixed together.Pull bar 62 one end adopt screw thread and slide plate 57 to fix, and pull bar 62 other ends adopt screw threads and drawhead 61 to fix, and so far pull drawhead 61 just can easily move four hole frame groups 95, to realize the movement of cuvette position.As Fig. 8, because four hole frame 59 light hole 94 centre distance are that 19 ± 0.1mm is identical with guide rod 2 52 locating slot 521 centre distance, thereby realized four gears, can pass through 300 light path centers, sample chamber, meet once can a plurality of samples of follow-on test requirement.
The advantage of above-mentioned improvement structure: (1) the locating slot of steel ball 55 is at guide rod 2 52, separated with the installed surface of specimen holder, has guaranteed the reliability of locating; Locating slot on guide rod 2 52 obtains with machine work, and positioning precision easily realizes.(2) guide rod 2 52 and slider guide 56 are machined piece, coordinate: φ 6H7/h7 easily realizes, and need not grind cooperation, than high with sheet metal component quality of fit grade.(3) as Fig. 9, four hole framves 59 and base 60 are molded item, and material is black ABS engineering plastics.Structural design wall thickness is even, and injection moulding rear surface is without epitome; Only need upper and lower mould unloading structure, without loosing core, mould is simple, and precision is guaranteed.In the hole frame of four hole framves 59, all around direction all carries elastic piece structure, as shown in Figure 9 591,592, solved dexterously the difficulty of metal clips processing and assembling, and contrast colors ware surface nondestructive is bad; Formed in mould shell fragment, shape and elastic force high conformity, without assembling link, good positioning effect.In a word, the relatively old tetrad specimen holder of manual tetrad specimen holder newly developed, processability of product structure is good, and assembling is simple, and cost performance is high, can be mass-produced.
All embodiment are only for illustration of the utility model above, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, therefore can also make various conversion or variation, all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.
Claims (6)
1. a manual tetrad specimen holder, comprise the first guide rod, the second guide rod, flexure strip, underframe, steel ball, slider guide, slide plate, limited block, four hole framves, base and pull bar, described steel ball is arranged in the counterbore of described slider guide, and be folded between described slider guide and described flexure strip and be fixed on described slide plate, described limited block is fixed on described slide plate, described slide plate, slider guide, limited block, flexure strip, steel ball are assembled into the slide plate group of rigidity one, it is characterized in that
On described one of them guide rod, offer several locating slots.
2. manual tetrad specimen holder according to claim 1, is characterized in that,
Described slide plate group and for described underframe the first guide rod, the second guide rod wear, threaded hole on the thread end of the first guide rod, the second guide rod and described underframe is directly fixing, pilot hole on described the second guide rod and described slider guide is that little gap is slidably matched, and the locating slot of described the first guide rod and described limited block is also slidably matched for little gap.
3. manual tetrad specimen holder according to claim 1 and 2, is characterized in that,
When described slide plate group transitional slide, the described steel ball being fastened in described elasticity film perforation is held one slippage, described steel ball is close to the second guide rod all the time, the resistance that described flexure strip regulates described steel ball to slide on the second guide rod, automatic centering after described steel ball falls into the locating slot on the second guide rod.
4. manual tetrad specimen holder according to claim 3, is characterized in that,
Fixing one or the four hole frame groups that form of described four hole framves and described base, described four hole frame groups are fixed in described slide plate group, described pull bar one end is fixed with screw thread and described slide plate, and the other end is fixed with screw thread and described drawhead, pulls described drawhead to move described four hole frame groups.
5. manual tetrad specimen holder according to claim 4, is characterized in that,
In hole slot in described four hole framves, all around direction is provided with shell fragment.
6. manual tetrad specimen holder according to claim 5, is characterized in that,
Described flexure strip adopts the thick tin bronze plate of 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320516955.3U CN203455266U (en) | 2013-08-22 | 2013-08-22 | Manual four-linkage sample holder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320516955.3U CN203455266U (en) | 2013-08-22 | 2013-08-22 | Manual four-linkage sample holder |
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| Publication Number | Publication Date |
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| CN203455266U true CN203455266U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320516955.3U Expired - Lifetime CN203455266U (en) | 2013-08-22 | 2013-08-22 | Manual four-linkage sample holder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092899A (en) * | 2015-08-25 | 2015-11-25 | 中国科学院物理研究所 | Bracket positioning device |
-
2013
- 2013-08-22 CN CN201320516955.3U patent/CN203455266U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092899A (en) * | 2015-08-25 | 2015-11-25 | 中国科学院物理研究所 | Bracket positioning device |
| CN105092899B (en) * | 2015-08-25 | 2018-06-29 | 中国科学院物理研究所 | A kind of support frame positioning device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |