Gene magnification instrument thermal cap compressing apparatus
Technical field
The utility model relates to biotechnology equipment technical field, particularly a kind of gene magnification instrument thermal cap compressing apparatus.
Background technology
Gene-amplificative instrament is mainly used in the fields such as biological scientific research, archaeology examination, hospital's chemical examination, gene replication.Gene-amplificative instrament has heating, refrigeration fast, and temperature of charge is even, and volume is little, pollution-free, the advantage that the life-span is long.
While using gene-amplificative instrament, microtest tube, after heating related reagent, is placed in the heat transfer module of gene-amplificative instrament, then regulates heat lid hold-down gear, makes heat lid compress microtest tube, avoids the liquid evaporation in microtest tube.
The heat lid hold-down gear of existing gene-amplificative instrament,, there is location out of true in the mode that adopts rotating shaft drive cam pressing heat to cover, and pressure force is inhomogeneous, between device, easily causes the shortcomings such as equipment damage because rigidity contacts.In addition, according to experience turn hold-down gear separately, there is many difference and uncertainty in operator in operation, makes the expanding effect also can be different.
Utility model content
The location out of true existing in order to overcome existing gene magnification instrument thermal cap compressing apparatus, pressure force is inhomogeneous, the shortcoming strong to operator's experience dependency, the utility model provides a kind of registration, pressure force is even, the gene magnification instrument thermal cap compressing apparatus low to operator's experience dependency.
Gene magnification instrument thermal cap compressing apparatus, comprise heat lid pressing plate and knob, it is characterized in that: on heat lid pressing plate, has multiple double-screw bolts, double-screw bolt is take the center of heat lid pressing plate as center of circle array distribution, each double-screw bolt coordinates a follower gear, and the middle part of follower gear offers the screw with double-screw bolt engaged transmission;
Knob center is provided with rotating shaft, between rotating shaft and knob, is provided with bearing, and the bottom of rotating shaft is fixed with heat lid pressing plate; In rotating shaft, be socketed with elastomeric components, elastomeric components is between knob and heat lid pressing plate; Elastomeric components comprises driving toothed gear, driver plate and the elastomerics between driving toothed gear and driver plate, and driving toothed gear is provided with and holds elastomeric accommodating cavity, and the side face of driver plate is provided with projection, and the chamber wall of accommodating cavity is provided with groove, and projection is positioned at groove;
Driving toothed gear and follower gear engaged transmission; Driver plate is provided with multiple pits, and pit is center of circle array distribution take driver plate center; Knob is provided with the hoodle coordinating with pit, and hoodle exposes being partially submerged in pit of knob, and knob drives driver plate rotation by hoodle.
The quantity of hoodle is identical with the quantity of pit, and each pit is embedded in a hoodle.
Further, knob comprises body and outer cover, and body is connected with rotating shaft, and hoodle is installed on body; Between body and outer cover, form the holding tank of bottom-open, double-screw bolt inserts in holding tank.
Body comprises the first sleeve and second sleeve of coaxial setting, and the first sleeve is interior, and the outer ring of bearing and the first sleeve are fixed, and inner ring and the rotating shaft of bearing are fixed; Hoodle is arranged at the bottom of the second sleeve, and the bottom surface of the second sleeve offers the hoodle hole that holds hoodle.
Further, rotating shaft is provided with pressure regulating device, and pressure regulating device comprises pressure regulation dish and pressure regulation dish seat, and rotating shaft top is provided with extension, and this extension is provided with outside screw, in pressure regulation dish, offers screw, and extension coordinates formation screw thread pair with pressure regulation dish; Rotating shaft is provided with and is equipped with spacer pin, and pressure regulation dish seat is provided with the stopper slot coordinating with spacer pin, and spacer pin coordinates with stopper slot and stops rotating shaft rotation.
Further, the upper surface of pressure regulation dish seat is provided with circular groove, and the cell wall of circular groove is provided with gear groove, and pressure regulation dish is provided with dialing spring, and dialing spring coordinates with gear groove.Every rotation one step of pressure regulation dish, dialing spring enters in next gear groove.
A pair of dialing spring is set on pressure regulation dish symmetrically, and dialing spring is between pressure regulation dish and pressure regulation dish seat.
Top knob portion is provided with the circular groove that holds pressure regulation dish seat.
Further, on body, also there is the 3rd sleeve, the bottom even of the 3rd sleeve is distributed with projection, the top of driving toothed gear is provided with outward extending annular nib and upwardly extending annular boss, annular nib is positioned on follower gear, the inwall running fit of the outer wall of annular boss and the 3rd sleeve, has the solution locked groove coordinating with projection on annular nib, projection coordinates with solution locked groove.In projection is inserted solution locked groove time, knob and driving toothed gear link together, knob is without directly drive driving toothed gear rotation by hoodle and elastic component assembly, thereby can adjusting knob and elastomerics between snap-in force, when elastomeric pressure excessive and while causing knob stuck, can be by projection and the object that reaches release that coordinates of separating locked groove.
The beneficial effects of the utility model are:
1, the rotation of knob is delivered to driving toothed gear by hoodle and elastomerics, thereby drive follower gear rotation to compress test tube by driving toothed gear, when heat lid pressing plate reaches required pressure to the pressure of test tube, hoodle starts to skid under elastomeric effect, no longer the moment of torsion of knob is delivered to driving toothed gear; Rely on elastomeric pretension setting to control the snap-in force of heat lid pressing plate to test tube, registration is low to operator's experience dependency.
2, follower gear and double-screw bolt be take the center of heat lid pressing plate as center of circle array distribution, and all follower gears drive rotation by same driving toothed gear, and heat lid pressing plate is stressed evenly, even to test tube applied pressure.
3, the distance between driver plate and driving toothed gear is adjustable, and therefore, elastomeric preliminary tension is adjustable, can according to reality with time test tube required snap-in force regulate the pressure of hold-down gear output.
4, can rely on projection with separate locked groove coordinate to discharge the elastomeric components being stuck, there is Self-unlocking function.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Fig. 2 is the schematic diagram of knob.
Fig. 2-1st, the schematic diagram of another angle of knob.
Fig. 3 is the schematic diagram that driving-disc, elastic component and bearing disc coordinate.
Fig. 3-1st, the decomposing schematic representation of Fig. 3.
Fig. 4 is the schematic diagram of heat lid pressing plate.
Fig. 5 is the schematic diagram of pressure regulating device.
Embodiment
Embodiment 1
As shown in Figure 1, gene magnification instrument thermal cap compressing apparatus, comprise heat lid pressing plate 1 and knob, on heat lid pressing plate 1, there are multiple double-screw bolts 11, double-screw bolt 11 is take the center of heat lid pressing plate 1 as center of circle array distribution, each double-screw bolt 11 coordinates a follower gear 12, and the middle part of follower gear 12 offers the screw with double-screw bolt 11 engaged transmission.
As Fig. 2, shown in 2-1, knob center is provided with rotating shaft 2, is provided with bearing 5 between rotating shaft 2 and knob, and the bottom of rotating shaft 2 is fixing with heat lid pressing plate 1; In rotating shaft 2, be socketed with elastomeric components, elastomeric components is between knob 3 and heat lid pressing plate 1.
As Fig. 3, shown in 3-1, elastomeric components comprises driving toothed gear 41, driver plate 42 and the elastomerics 43 between driving toothed gear 41 and driver plate 42, driving toothed gear 41 is provided with the accommodating cavity 411 that holds elastomerics 43, the side face of driver plate 42 is provided with projection 421, the chamber wall of accommodating cavity 411 is provided with groove 412, and projection 421 is positioned at groove 412.Projection 421 has multiple, and projection 421 is uniformly distributed on the circumference of driver plate 42.Groove 412 has multiple, a corresponding projection 421 of groove 412.
Driving toothed gear 41 and follower gear 12 engaged transmission; Driver plate 42 is provided with multiple pits 422, and pit 422 is take driver plate 42 centers as center of circle array distribution; Knob 3 is provided with the hoodle 33 coordinating with pit 422, and hoodle 33 exposes being partially submerged in pit 422 of knob 3, and knob 3 drives driver plate 42 to rotate by hoodle 33.
In the time that knob 3 rotates, hoodle 33 is followed rotation and is rotated, part in embedding driver plate 42 pits 422 of hoodle 33 promotes driver plate 42 and rotates, driver plate 42 drives driving toothed gear 41 to rotate, driving toothed gear 41 and follower gear 12 engaged transmission, under the screw thread pair effect of follower gear 12 and double-screw bolt 11, heat lid pressing plate 1 compresses to test tube.
The quantity of hoodle 33 is identical with the quantity of pit 422, and each pit 422 is embedded in a hoodle 33.Elastomerics 43 is disk spring.Certainly, elastomerics 43 can also be common spring.
Knob 3 comprises body and outer cover 31, and body is connected with rotating shaft 2, and hoodle 33 is installed on body; The holding tank that forms bottom-open between body and outer cover 31, double-screw bolt 11 inserts in holding tank.Outer cover 31 hides double-screw bolt 11, avoids dust to fall in screw thread pair, and specious.
As shown in Fig. 2-1, body comprises that the first sleeve 321 of coaxial setting and the second sleeve 322, the first sleeves 321 are interior, and the outer ring of bearing 5 and the first sleeve 321 are fixing, and the inner ring of bearing 5 is fixed with rotating shaft 2.The upper and lower of rotating shaft 2 is respectively equipped with bearing 5.Hoodle 33 is arranged at the bottom of the second sleeve 322, and the bottom surface of the second sleeve 322 offers the hoodle hole 3221 that holds hoodle 33.Between the first sleeve 321 and elastomeric components, it is running fit.
As shown in Figure 5, heat lid pressing plate 1 is provided with bearing plate 13, follower gear 12 is set up on bearing plate 13, rotating shaft 2 bottoms are a circular base plate 21, bearing plate 13 centers are provided with the through hole that allows rotating shaft 2 to pass, the circular base plate 21 of rotating shaft 2 is between load-bearing plate and heat lid pressing plate 1, and circular base plate 21 is fixing with heat lid pressing plate 1.
Follower gear 12 comprises gear part and the installation portion to downward-extension, the open holes running fit on installation portion and bearing plate 13.Between installation portion and gear part, form step, this step is set up on bearing plate 13.Driving toothed gear 41 is anti-to be terminated on bearing plate 13.Bearing plate 13 plays the effect of holding driving toothed gear 41 and follower gear 12.
The present embodiment has the following advantages:
1, the rotation of knob is delivered to driving toothed gear by hoodle and elastomerics, thereby drive follower gear rotation to compress test tube by driving toothed gear, when heat lid pressing plate reaches required pressure to the pressure of test tube, hoodle starts to skid under elastomeric effect, no longer the moment of torsion of knob is delivered to driving toothed gear; Rely on elastomeric pretension setting to control the snap-in force of heat lid pressing plate to test tube, registration is low to operator's experience dependency.
2, follower gear and double-screw bolt be take the center of heat lid pressing plate as center of circle array distribution, and all follower gears drive rotation by same driving toothed gear, and heat lid pressing plate is stressed evenly, even to test tube applied pressure.
Embodiment 2
The difference of the present embodiment and embodiment 1 is: rotating shaft 2 is provided with pressure regulating device, as shown in Figure 5, pressure regulating device comprises pressure regulation dish 61 and pressure regulation dish seat 62, rotating shaft 2 tops are provided with extension 22, this extension 22 is provided with outside screw, in pressure regulation dish 61, offer screw, extension 22 coordinates formation screw thread pair with pressure regulation dish 61; Rotating shaft 2 is provided with and is equipped with spacer pin 63, and pressure regulation dish seat 62 is provided with the stopper slot 621 coordinating with spacer pin 63, and spacer pin 63 coordinates prevention rotating shaft 2 to rotate with stopper slot 621.Rotation pressure regulation dish 61, and rotating shaft 2 can not followed pressure regulation dish 61 and rotated, therefore, under the screw thread pair effect between pressure regulation dish 61 and rotating shaft 2, the distance between pressure regulation dish 61 and pressure regulation dish seat 62 and rotating shaft 2 bottoms changes.In the time that pressure regulating device makes distance between pressure regulation dish seat 62 and rotating shaft 2 bottoms become large, elastomerics 43 upwards pushes up driver plate 42 and knob 3, until knob 3 propped up by pressure regulation dish seat 62, now, the preliminary tension of elastomerics 43 diminishes before compared with pressure regulating device pressure regulation.In the time that pressure regulating device diminishes distance between pressure regulation dish seat 62 and rotating shaft 2 bottoms, pressure regulation dish seat 62 presses down knob 3, and knob 3 presses down driver plate 42, and elastomerics 43 is compressed, now, becomes large before the preliminary tension school pressure regulating device pressure regulation of elastomerics 43.
The upper surface of pressure regulation dish seat 62 is provided with circular groove, and the cell wall of circular groove is provided with gear groove 622, and pressure regulation dish 61 is provided with dialing spring 611, and dialing spring 611 coordinates with gear groove 622.Every rotation one step of pressure regulation dish 61, dialing spring 611 enters in next gear groove 622.Dialing spring 611 is triangular in shape, and gear groove 622 is also triangular in shape, and dialing spring 611 sends " rattling away " sound while entering and exit gear groove 622, to point out the conversion of pressure gear.
A pair of dialing spring 611 is set on pressure regulation dish 61 symmetrically, and dialing spring 611 is between pressure regulation dish 61 and pressure regulation dish seat 62.The pressure regulation dish 61 that a pair of dialing spring 611 is in the time of pressure regulation, pressure regulation dish 61 stress equalizations.
Knob 3 tops are provided with the circular groove 33 that holds pressure regulation dish seat 62.All the other structures are all identical with embodiment mono-.
The advantage of the present embodiment is: the distance between driver plate and driving toothed gear can be adjusted by pressure regulating device, and therefore, elastomeric preliminary tension is adjustable, can according to reality with time test tube required snap-in force regulate the pressure of hold-down gear output.
Embodiment 3
The difference of the present embodiment and embodiment bis-is: on body, also have the 3rd sleeve 323, the bottom even of the 3rd sleeve 323 is distributed with projection 3231, the top of driving toothed gear 41 is provided with outward extending annular nib 413 and upwardly extending annular boss 414, annular nib 413 is positioned on follower gear 12, the inwall running fit of the outer wall of annular boss 414 and the 3rd sleeve 323, on annular nib 413, have the solution locked groove 415 coordinating with projection 3231, projection 3231 coordinates with solution locked groove 415.All the other structures are all identical with embodiment bis-.
Insert and separate locked groove 415 when interior when projection 3231, knob 3 links together with driving toothed gear 41, knob 3 is without directly driving driving toothed gear 41 to rotate by hoodle 33 with elastic component assembly, thereby can adjusting knob 3 and elastomerics 43 between snap-in force, when the pressure of elastomerics 43 excessive and while causing knob 3 stuck, can be by projection 3231 and the object that reaches release that coordinates of separating locked groove 415.
The advantage of the present embodiment is: can rely on projection with separate locked groove coordinate to discharge the elastomeric components being stuck, there is Self-unlocking function.
Content described in this specification sheets embodiment is only enumerating of way of realization to utility model design; protection domain of the present utility model should not be regarded as only limiting to the specific form that embodiment states, protection domain of the present utility model also and conceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.