CN102302959A - Pressure-adjustable thermal cover of thermocycler - Google Patents
Pressure-adjustable thermal cover of thermocycler Download PDFInfo
- Publication number
- CN102302959A CN102302959A CN201110169075A CN201110169075A CN102302959A CN 102302959 A CN102302959 A CN 102302959A CN 201110169075 A CN201110169075 A CN 201110169075A CN 201110169075 A CN201110169075 A CN 201110169075A CN 102302959 A CN102302959 A CN 102302959A
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- lifting shaft
- adjustable
- heat
- lifting
- thermal cycler
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Abstract
The invention relates to a part of a thermocycler, in particular to a pressure-adjustable thermal cover capable of being lifted uniformly for the thermocycler. The thermal pressure-adjustable cover of the thermocycler comprises a thermal cover, a bracket and a lifting assembly, wherein the lifting assembly is connected with the thermal cover by passing through the bracket; the lifting assembly comprises a lifting shaft; a knob is connected to the upside of the lifting shaft; and a positioning bead pedestal is embedded in the knob. The knob is rotated to drive the lifting shaft to rotate firstly, and then the lifting shaft drives the thermal cover to move upward and downward via threads. The rotating force needs to be increased because the pressure becomes greater when the thermal moves to the lowest position, or the thermal cover is propped on a tested pipe. The positioning bead can slide and the thermal cover can not move downward when the rotating force is equal to a limited value. When the lifting shaft moves upward and the rotating force is equal to the limited value in the reversed direction, the positioning bead can slide and the thermal cover can not move upward.
Description
Technical field
The present invention relates to a kind of accessory of thermal cycler, relate in particular to the heat lid of a kind of adjustable in pressure, the uniform thermal cycler of up-down.
Background technology
Thermal cycler when in use; All need regulate the stroke up and down of heat lid; The heat lid contacts and applies certain pressure downwards with the test tube top, consistent to guarantee that the test tube bottom contacts with the specimen holder of instrument, guarantees the bottom of each test tube and validity and the uniformity that the specimen holder heat transmits.Different experiments, test tube are because thickness and length inconsistent, and the stroke of heat lid needs to regulate again, requires the tunable performance that heat is covered to get well, and in the time of up-down adjustment, good pressure control function arranged, and avoid unconfined downward pressurization and crush test tube.Existing heat covers down in the elevating mechanism, and using is to drive four pinion shafts by a main gear shaft widely, drives the up-down of heat lid through four pinion shafts.But this kind lifting structure, complex structure assembles loaded down with trivial detailsly, and the technology of accessory processing is many, and the expense of whole device is big.
Summary of the invention
The present invention is directed to complex structure in the prior art, assemble loaded down with trivial detailsly, spend big deficiency, provide a kind of pressure to regulate, simple in structure, be easy to assembling, the thermal cycler heat that spend little adjustable in pressure is covered.
In order to solve the problems of the technologies described above, the present invention is able to solve through following technical proposals:
The thermal cycler heat lid of adjustable in pressure comprises hot lid, support and lifting assembly, and lifting assembly passes support and is connected with Re Gai, and lifting assembly comprises lifting shaft, and the lifting shaft top is connected with knob, and knob inside is embedded with the positioning bead seat.The rotation knob drives the lifting shaft rotation, and lifting shaft drives heat through screw thread and covers down mobile.When being moved down into minimum position, instant heating covers time the test tube of conflicting, and it is big that pressure becomes, and needing increases revolving force, and when revolving force was numbered, the positioning bead toilet can skid, and hot lid promptly can not move down again.In the time of upwards, when revolving force was numbered in the other direction, the positioning bead seat can skid, and the heat lid promptly can not move up again.
As preferably, heat covers the connection transfer arm, and transfer arm is connected with lifting shaft.
As preferably, knob is provided with cylindrical cavity, and cylindrical cavity is provided with axis hole, and lifting shaft passes axis hole, and the inwall of cylindrical cavity is provided with ball grooves, and described positioning bead seat is located in the cylindrical cavity, and the peripheral outer wall of positioning bead seat is provided with the side ball.Can regulate the frictional force between side ball and the ball grooves through the number of ball.
As preferably, be connected with spring on the side ball, side ball and spring are installed in the installing hole.In the scope that revolving force is being set, the side ball is positioned at ball grooves inside always, and the frictional force between side ball and the ball grooves can drive the positioning bead seat and rotate, and the positioning bead seat drives lifting shaft and rotates.The power that the heat that drives when lifting shaft covers down conflict is greater than the frictional force between side ball and the ball grooves time, and the side ball will break away from corresponding ball grooves, skidding occurs.Frictional force between side ball and the ball grooves can be regulated through the number of ball.
As preferably, the end face ball is installed on the upper surface of positioning bead seat.Reduce the friction of positioning bead seat end face and knob.
As preferably, be fixed with ring flange on the support, be provided with bearing in the ring flange, bearing and lifting shaft cooperate.Lifting shaft passes the bearing that is fixed in the ring flange, makes that the rotation friction of lifting shaft is littler, makes whole assembly more flexible when going up and down, and also stuck phenomenon can not occur.
As preferably, transfer arm is provided with lifting nut, is equipped with screw thread on lifting nut and the lifting shaft, and lifting shaft rotates and drives transfer arm through lifting nut and move up and down along lifting shaft.The bottom of lifting shaft is processed with screw thread; Threads engaged with lifting nut inside; Relatively rotating of lifting nut and lifting shaft; Make lifting nut on lifting shaft, move; Lifting nut is connected with transfer arm; Transfer arm is fixedly connected with Re Gai or elasticity is connected, and moving up and down of lifting nut just drives moving up and down of heat lid like this.
As preferably, the positioning bead seat is provided with screw thread, and lifting shaft is fixedly connected with transfer arm, and knob drives lifting shaft through the screw thread on the positioning bead seat and transfer arm moves up and down.The screwed positioning bead seat in lifting shaft top serves as nut, and in the time of turning knob, lifting shaft and transfer arm move up and down, and drives heat and covers down mobile.
As preferably, the side of transfer arm is equipped with guiding mechanism.
As preferably, guiding mechanism comprises guide groove and slide block.The side of transfer arm is installed with guide block.Be installed with guide groove on the support.Guide block moves in guide groove, guarantees that uniformity and heat that the crossbeam left and right sides is stressed cover down the planarization that moves.
According to technical scheme of the present invention, the thermal cycler of adjustable in pressure heat lid simple in structure is easy to assembling, spend for a short time, and while pressure can be regulated.
Description of drawings
Fig. 1 is the structure explosive view of the thermal cycler heat lid of adjustable in pressure of the present invention.
Fig. 2 is the half sectional view of the thermal cycler heat lid of adjustable in pressure of the present invention.
Fig. 3 is the structural representation of the knob of the thermal cycler heat lid of adjustable in pressure of the present invention.
Fig. 4 is the structural representation of the positioning bead seat of the thermal cycler heat lid of adjustable in pressure of the present invention.
Fig. 5 is the partial enlarged drawing of A among Fig. 2.
1-heat lid, 2-transfer arm, 21-guide block, 3-support; The 31-guide groove, 4-lifting assembly, 41-ring flange, 42-bearing; The 43-lifting nut, 5-knob, 51-cylindrical cavity; The 52-ball grooves, 53-axis hole, 6-positioning bead seat; 61-end face ball, 62-side ball, 63-central shaft hole; The 64-spring, 65-installing hole, 7-lifting shaft.
The specific embodiment
Below in conjunction with the accompanying drawing 1-5 and the specific embodiment the present invention is described in further detail:
The thermal cycler heat lid of adjustable in pressure; Comprise heat lid 1, support 3 and lifting assembly 4; Lifting assembly 4 passes support 3 and is connected with Re Gai 1; Lifting assembly 4 comprises lifting shaft 7; Lifting shaft 7 tops are connected with knob 5, and knob 5 top fastenings have a loam cake, are a cylindrical cavity 51 in the middle of the knob 5; The home position of cylindrical cavity 51 has axis hole 53, and the periphery of cylindrical cavity 51 is provided with ball grooves 52.Cylindrical cavity 51 inside are embedded with positioning bead seat 6, and positioning bead seat 6 is a cylinder, on positioning bead seat 6 and the end face that knob 5 contacts end face ball 61 are installed, and the side of positioning bead seat 6 is equipped with side ball 62.Side ball 62 is engaged in ball grooves 52 the insides.Be connected with spring 64 on the ball, ball and spring 64 integral body are pressed in the installing hole 65.One end of lifting shaft 7 is a flat structure, penetrates the central shaft hole 63 of positioning bead seat 6.Be provided with ring flange 41 in the middle of the lifting shaft 7, ring flange 41 is fixedly connected on the support 3.Ring flange 41 inside are embedded with bearing 42, and bearing 42 is connected with lifting shaft 7.Lifting shaft 7 belows are provided with lifting nut 43, and lifting nut 43 inside are provided with screw thread, and lifting nut 43 is fixedly connected on the transfer arm 2, and transfer arm 2 is fixedly connected with Re Gai 1.
The side of transfer arm 2 is installed with guide block 21.Be installed with guide groove 31 on the support 3.Guide block 21 moves in guide groove 31, guarantees uniformity and heat lid 1 planarization that moves up and down that transfer arm 2 left and right sides are stressed, and the phenomenon of an end can not occur being partial to.
Cover 1 when heat and be moved down into minimum position, time the test tube of conflicting, it is big that pressure becomes, and will increase the power of rotation knob 5.Revolving force is greater than the frictional force between side ball 62 and the ball grooves 52 time, and side ball 62 breaks away from corresponding ball grooves 52, skidding occurs.Lifting shaft 7 is not subjected to knob 5 controls, heat lid 1 can not occur and descend always, causes the broken phenomenon of test tube.Frictional force between side ball 62 and the ball grooves 52 can be regulated through the number of ball.
When heat lid 1 is moved upwards up to the highest position, can occur equally skidding.
The central shaft hole 63 of positioning bead seat 6 is provided with screw thread, and the upper end of lifting shaft 7 is provided with screw thread, cooperates with central shaft hole 63.The lower end of lifting shaft 7 is fixedly connected with transfer arm 2, and turning knob 5 drives lifting shaft 7 through the screw thread on the positioning bead seat 6 and moves up and down with transfer arm 2.The screwed positioning bead seat 6 in lifting shaft 7 tops serves as nut, and in the time of turning knob 5, lifting shaft 7 moves up and down with transfer arm 2, drives heat lid 1 and moves up and down.
Other connections are identical with embodiment 1.
In a word, the above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (10)
1. the thermal cycler of adjustable in pressure heat is covered; Comprise heat lid (1), support (3) and lifting assembly (4); Lifting assembly (4) passes support (3) He Regai (1) and connects; It is characterized in that: described lifting assembly (4) comprises lifting shaft (7); Lifting shaft (7) top is connected with knob (5), and knob (5) inside is embedded with positioning bead seat (6).
2. the thermal cycler of adjustable in pressure according to claim 1 heat is covered, and it is characterized in that: heat lid (1) connects transfer arm (2), and transfer arm (2) connects lifting shaft (7).
3. the thermal cycler of adjustable in pressure according to claim 1 heat is covered; It is characterized in that: described knob (5) is provided with cylindrical cavity (51); Cylindrical cavity (51) is provided with axis hole (53); Lifting shaft (7) passes axis hole (53); The inwall of cylindrical cavity (51) is provided with ball grooves (52); Described positioning bead seat (6) is located in the cylindrical cavity (51), and the peripheral outer wall of positioning bead seat (6) is provided with side ball (62).
4. the thermal cycler of adjustable in pressure according to claim 3 heat is covered, and it is characterized in that: be connected with spring (64) on the described side ball (62), side ball (62) and spring (64) are installed in the installing hole (65).
5. according to the thermal cycler heat lid of claim 1 or 2 or 3 or 4 described adjustable in pressure, it is characterized in that: end face ball (61) is installed on the upper surface of described positioning bead seat (6).
6. the thermal cycler of adjustable in pressure according to claim 1 heat lid is characterized in that: be fixed with ring flange (41) on the described support (3), be provided with bearing (42) in the ring flange (41), bearing (42) and lifting shaft (7) cooperation.
7. the thermal cycler of adjustable in pressure according to claim 2 heat is covered; It is characterized in that: described transfer arm (2) is provided with lifting nut (43); Be equipped with screw thread on lifting nut (43) and the lifting shaft (7), lifting shaft (7) rotates through lifting nut (43) drive transfer arm (2) and moves up and down along lifting shaft (7).
8. the thermal cycler of adjustable in pressure according to claim 2 heat is covered; It is characterized in that: described positioning bead seat (6) is provided with screw thread; Lifting shaft (7) is fixedly connected with transfer arm (2), and knob (5) rotates through drive lifting shaft (7) of the screw thread on the positioning bead seat (6) and transfer arm (2) and moves up and down.
9. the thermal cycler of adjustable in pressure according to claim 1 heat is covered, and it is characterized in that: the side of described transfer arm (2) is equipped with guiding mechanism.
10. the thermal cycler of adjustable in pressure according to claim 9 heat is covered, and it is characterized in that: described guiding mechanism comprises guide groove (31) and slide block (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101690759A CN102302959B (en) | 2011-06-22 | 2011-06-22 | Pressure-adjustable thermal cover of thermocycler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101690759A CN102302959B (en) | 2011-06-22 | 2011-06-22 | Pressure-adjustable thermal cover of thermocycler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102302959A true CN102302959A (en) | 2012-01-04 |
| CN102302959B CN102302959B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101690759A Active CN102302959B (en) | 2011-06-22 | 2011-06-22 | Pressure-adjustable thermal cover of thermocycler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630057A (en) * | 2015-03-05 | 2015-05-20 | 东南大学 | Full-automatic thermal cycler hot cover |
| CN105132283A (en) * | 2015-08-21 | 2015-12-09 | 杭州安杰思生物科技有限公司 | Hot lid mechanism of fluorescent quantitative PCR (polymerase chain reaction) instrument |
| CN107866289A (en) * | 2016-09-23 | 2018-04-03 | 广州康昕瑞基因健康科技有限公司 | Metal bath heat lid |
| CN114806809A (en) * | 2022-06-09 | 2022-07-29 | 南京溯远基因科技有限公司 | PCR hot cover subassembly |
| WO2023128610A1 (en) * | 2021-12-30 | 2023-07-06 | 한국전자기술연구원 | Portable thermal block module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100063175A (en) * | 2008-12-03 | 2010-06-11 | 삼성전자주식회사 | Rotary switch and washing machine having the same |
| CN201543434U (en) * | 2009-10-30 | 2010-08-11 | 杭州博日科技有限公司 | Automatic pressure control knob |
| CN201783334U (en) * | 2010-09-02 | 2011-04-06 | 青岛中和实验室技术装备有限公司 | Power-driven lifting hanging cabinet for laboratory |
-
2011
- 2011-06-22 CN CN2011101690759A patent/CN102302959B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100063175A (en) * | 2008-12-03 | 2010-06-11 | 삼성전자주식회사 | Rotary switch and washing machine having the same |
| CN201543434U (en) * | 2009-10-30 | 2010-08-11 | 杭州博日科技有限公司 | Automatic pressure control knob |
| CN201783334U (en) * | 2010-09-02 | 2011-04-06 | 青岛中和实验室技术装备有限公司 | Power-driven lifting hanging cabinet for laboratory |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630057A (en) * | 2015-03-05 | 2015-05-20 | 东南大学 | Full-automatic thermal cycler hot cover |
| CN105132283A (en) * | 2015-08-21 | 2015-12-09 | 杭州安杰思生物科技有限公司 | Hot lid mechanism of fluorescent quantitative PCR (polymerase chain reaction) instrument |
| CN107866289A (en) * | 2016-09-23 | 2018-04-03 | 广州康昕瑞基因健康科技有限公司 | Metal bath heat lid |
| WO2023128610A1 (en) * | 2021-12-30 | 2023-07-06 | 한국전자기술연구원 | Portable thermal block module |
| CN114806809A (en) * | 2022-06-09 | 2022-07-29 | 南京溯远基因科技有限公司 | PCR hot cover subassembly |
| CN114806809B (en) * | 2022-06-09 | 2023-03-21 | 南京溯远基因科技有限公司 | PCR hot cover subassembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102302959B (en) | 2013-11-20 |
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Effective date of registration: 20210514 Address after: 5 / F, No.3 workshop, energy saving science and Technology Park, 391 Wener Road, Xihu District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Langji Scientific Instrument Co.,Ltd. Address before: Room 513, block C, Xihu international science and technology building, 391 Wener Road, Hangzhou, Zhejiang 310012 Patentee before: Zhang Jialin |