CN218048007U - Centrifugal micro-fluidic chip's fixing device - Google Patents
Centrifugal micro-fluidic chip's fixing device Download PDFInfo
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- CN218048007U CN218048007U CN202222223875.0U CN202222223875U CN218048007U CN 218048007 U CN218048007 U CN 218048007U CN 202222223875 U CN202222223875 U CN 202222223875U CN 218048007 U CN218048007 U CN 218048007U
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- chip
- conical surface
- surface portion
- fixing
- centrifugal microfluidic
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Abstract
The utility model discloses a fixing device of a centrifugal microfluidic chip, wherein the center of the centrifugal microfluidic chip is provided with a fixing hole, and the fixing device comprises a chip fixing seat and a locking piece; the chip fixing seat is provided with a locking hole and a shaft insertion hole for inserting the rotating shaft, and the locking hole is communicated with the shaft insertion hole; the one end of chip fixed seat back off-axis jack is equipped with fixed boss, and fixed boss includes cylinder portion and conical surface portion, and conical surface portion's diameter reduces gradually by inner to the outer end, and the diameter of cylinder portion equals and closely cooperates with the fixed orifices with conical surface portion's maximum diameter, and cylinder portion, conical surface portion and the coaxial setting of axle jack. The fixing device of the centrifugal microfluidic chip is simple in structure, the chip fixing seat can be matched with the locking piece to be fixedly connected with the rotating shaft in advance when the fixing device is used, the fixing hole of the centrifugal microfluidic chip is sleeved on the conical surface portion, then the centrifugal microfluidic chip can be fixed on the cylindrical portion along the lower sliding sleeve of the conical surface portion by pressing, and the centrifugal microfluidic chip is convenient to install and disassemble under the structure.
Description
Technical Field
The utility model belongs to the technical field of micro-fluidic chip, concretely relates to centrifugal micro-fluidic chip's fixing device.
Background
The centrifugal micro-fluidic chip is a micro-fluidic body which is based on micro-electro-mechanical processing technology, integrates components such as valves, flow pipelines, mixing reactors, heaters, separating devices, detectors and the like involved in the processes of sampling, pretreatment, derivatization, mixing, detection and the like of chemical analysis on a CD-shaped chip, and realizes detection and analysis of liquid flow by taking centrifugal force as liquid flow driving force. Therefore, when the centrifugal chip is used, the chip needs to be fixed on the rotating shaft, and the rotating shaft is driven by the motor to rotate so as to drive the chip to rotate, so that centrifugal force is generated. The existing centrifugal microfluidic chip has a complex fixed structure and is troublesome to install, and a plurality of screws are usually required to be screwed to connect the centrifugal microfluidic chip with a motor shaft.
SUMMERY OF THE UTILITY MODEL
The utility model provides a centrifugal micro-fluidic chip's fixing device aims at solving among the prior art centrifugal micro-fluidic chip's fixed knot structure complicacy, the trouble problem of installation.
The utility model adopts the following technical scheme:
a fixing device for a centrifugal microfluidic chip is characterized in that a fixing hole is formed in the center of the centrifugal microfluidic chip, and the fixing device comprises a chip fixing seat and a locking piece; the chip fixing seat is provided with a locking hole and a shaft insertion hole for inserting the rotating shaft, and the locking hole is communicated with the shaft insertion hole; the chip fixing seat is characterized in that a fixing boss is arranged at one end, deviating from the shaft insertion hole, of the chip fixing seat, the fixing boss comprises a cylindrical portion and a conical surface portion located at one end of the cylindrical portion, the diameter of the conical surface portion is gradually reduced from the inner end to the outer end, the diameter of the cylindrical portion is equal to the maximum diameter of the conical surface portion and is tightly matched with the fixing hole, and the cylindrical portion, the conical surface portion and the shaft insertion hole are coaxially arranged.
In some embodiments, the retaining member is threadably connected to the locking aperture.
In some embodiments, the locking bore and the shaft receptacle axis are perpendicular.
In some embodiments, the locking holes are provided in a plurality, and the axes of two adjacent locking holes are perpendicular to each other.
In some embodiments, the conical surface portion is frustoconical or conical.
In some embodiments, the included angle between the generatrix of the conical surface part and the axis of the conical surface part is 10-45 degrees.
In some embodiments, the chip holder further comprises a support portion having a flat support surface, and the fixing boss is disposed on the support surface.
In some embodiments, the support is disc-shaped.
In some embodiments, the chip holder is integrally formed.
Compared with the prior art, the beneficial effects of the utility model are that:
this centrifugal micro-fluidic chip's fixing device simple structure can be connected fixedly with chip fixing base cooperation retaining member and pivot (being the pivot of motor) in advance during the use, when needing to install centrifugal micro-fluidic chip, overlaps centrifugal micro-fluidic chip's fixed orifices on conical surface portion, then presses down and makes centrifugal micro-fluidic chip follow conical surface portion lower sliding sleeve can fix on cylinder portion, this kind of mode simple to operate, also only need during the dismantlement to pull out centrifugal micro-fluidic chip toward outer can.
Drawings
The technology of the present invention will be described in further detail with reference to the accompanying drawings and detailed description:
fig. 1 is a schematic view of a fixture for a centrifugal microfluidic chip according to the present invention in use;
FIG. 2 is an exploded view of the state of FIG. 1;
FIG. 3 is a schematic structural diagram of a chip holder;
fig. 4 is a schematic structural view of another angle of the chip holder.
Reference numerals:
1-a fixation device; 11-chip holders; 111-locking holes; 112-shaft insertion hole; 113-fixing the boss; 1131-a cylindrical portion; 1132-cone portion; 114-a support; 1141-a support surface; 12-a locking member;
2-centrifugal micro-fluidic chip; 21-a fixing hole;
3, a motor; 31-rotating shaft.
Detailed Description
The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, etc. used in the present invention is only relative to the mutual positional relationship of the components of the present invention in the accompanying drawings.
Referring to fig. 1 to 4, a fixing device 1 for a centrifugal microfluidic chip is used for installing and fixing a centrifugal microfluidic chip 2, and connecting the centrifugal microfluidic chip 2 with a rotating shaft 31 of a motor 3.
Wherein, the center of the centrifugal microfluidic chip 2 is provided with a fixing hole 21, and the fixing is performed by matching the fixing hole 21 with the structure of the fixing device 1.
The fixing device 1 comprises a chip fixing seat 11 and a locking piece 12; chip fixing base 11 is equipped with locking hole 111 and is used for supplying pivot 31 male axle jack 112, locking hole 111 with axle jack 112 communicates with each other, consequently, inserts behind axle jack 112 when pivot 31, retaining member 12 can follow locking hole 111 and insert and push up tight pivot 31 to realize fixing chip fixing base 11 and pivot 31, can drive chip fixing base 11 and rotate together after pivot 31 rotates.
Based on the structure, the fixing device 1 of the centrifugal micro-fluidic chip has the advantages of simple structure, convenience in installation and disassembly and high installation precision.
Specifically, retaining member 12 with locking hole 111 threaded connection, retaining member 12 is the screw promptly, and locking hole 111 is the screw hole, adopts the screw to twist and tightly pushes up pivot 31, and fixed back can not dismantle chip fixing base 11 when changing the chip, only need change the chip can, reduced the time of dismantling the installation.
Preferably, the locking hole 111 is perpendicular to the axis of the shaft insertion hole 112, so that no component force is generated along the axis of the rotating shaft 31 during locking, and the rotating shaft 31 is prevented from being extruded into the shaft insertion hole 112.
Wherein, for fixed pivot 31 better, locking hole 111 is equipped with a plurality of, and two adjacent locking hole 111's axis mutually perpendicular carry out the top and tighten pivot 31 from a plurality of directions, and locking effect is better. In one embodiment, there are 2 locking holes 111, and correspondingly, there are 2 locking members 12.
Specifically, the tapered surface 1132 has a circular truncated cone shape or a conical cone shape, and the tapered surface is configured to facilitate the fitting of the fixing hole 21 and the cylindrical portion 1131. Wherein, the included angle between the generatrix of the conical surface portion 1132 and the axis thereof is 10 ° to 45 °, such as 20 °, 25 °, 30 °, 35 °, 40 °, and the like, and in one embodiment, the included angle is 26.57 °.
Preferably, the chip fixing base 11 further includes a supporting portion 114, the supporting portion 114 has a flat supporting surface, the fixing boss 113 is disposed on the supporting surface 1141, and the supporting portion 114 is disposed to axially limit the chip when the chip is mounted on the cylindrical portion 1131, so as to prevent the chip from being mounted too deeply, which is inconvenient to detach and pull out, and when the bottom surface of the chip contacts the supporting surface 1141, the chip is mounted in place without pressing down. In one embodiment, the support 114 is disc-shaped.
In one embodiment, the chip holder 11 is integrally formed, and no additional connecting structure is required to connect the cylindrical portion 1131, the tapered portion 1132, the supporting portion 114, and the like, so that the whole fixing device 1 is more compact.
Other contents of the fixing device for the centrifugal microfluidic chip in the present invention are referred to in the prior art and will not be described herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical essence of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A fixing device of a centrifugal microfluidic chip is characterized in that the fixing device comprises a chip fixing seat and a locking piece; the chip fixing seat is provided with a locking hole and a shaft insertion hole for inserting the rotating shaft, and the locking hole is communicated with the shaft insertion hole; the chip fixing seat is characterized in that a fixing boss is arranged at one end, deviating from the shaft insertion hole, of the chip fixing seat, the fixing boss comprises a cylindrical portion and a conical surface portion located at one end of the cylindrical portion, the diameter of the conical surface portion is gradually reduced from the inner end to the outer end, the diameter of the cylindrical portion is equal to the maximum diameter of the conical surface portion and is tightly matched with the fixing hole, and the cylindrical portion, the conical surface portion and the shaft insertion hole are coaxially arranged.
2. The fixture device for centrifugal microfluidic chips according to claim 1, wherein the locking member is screwed to the locking hole.
3. The fixture of claim 1, wherein the locking holes are perpendicular to the axis of the shaft insertion hole.
4. The centrifugal microfluidic chip fixing device according to claim 3, wherein the locking holes are provided in a plurality, and the axes of two adjacent locking holes are perpendicular to each other.
5. The fixture device for the centrifugal microfluidic chip according to claim 1, wherein the tapered surface portion is in a shape of a circular truncated cone or a conical cone.
6. The fixture device for centrifugal microfluidic chips according to claim 5, wherein the included angle between the generatrix of the conical surface portion and the axis of the conical surface portion is 10-45 °.
7. The fixture device for a centrifugal microfluidic chip according to claim 1, wherein the chip holder further comprises a support portion having a flat support surface, and the fixing boss is disposed on the support surface.
8. The fixture device for a centrifugal microfluidic chip according to claim 7, wherein the support portion is in the shape of a disk.
9. The microfluidic chip holder according to any one of claims 1 to 8, wherein the chip holder is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222223875.0U CN218048007U (en) | 2022-08-23 | 2022-08-23 | Centrifugal micro-fluidic chip's fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222223875.0U CN218048007U (en) | 2022-08-23 | 2022-08-23 | Centrifugal micro-fluidic chip's fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218048007U true CN218048007U (en) | 2022-12-16 |
Family
ID=84405151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222223875.0U Active CN218048007U (en) | 2022-08-23 | 2022-08-23 | Centrifugal micro-fluidic chip's fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218048007U (en) |
-
2022
- 2022-08-23 CN CN202222223875.0U patent/CN218048007U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230922 Address after: Room 301, G10, South China new material innovation park, building 3, No. 31, Kefeng Road, Guangzhou hi tech Industrial Development Zone, Guangdong 510130 Patentee after: Guangzhou Weiyuan Medical Equipment Co.,Ltd. Patentee after: GUANGZHOU VISION GENE TECHNOLOGY Co.,Ltd. Patentee after: Guangzhou Weiyuan medical laboratory Co.,Ltd. Patentee after: Shenzhen Weiyuan Medical Technology Co.,Ltd. Patentee after: Beijing Weiyuan Medical Laboratory Co.,Ltd. Address before: Room 301, G10, South China new material innovation park, building 3, No. 31, Kefeng Road, Guangzhou hi tech Industrial Development Zone, Guangdong 510130 Patentee before: Guangzhou Weiyuan Medical Equipment Co.,Ltd. Patentee before: GUANGZHOU VISION GENE TECHNOLOGY Co.,Ltd. Patentee before: Guangzhou Weiyuan medical laboratory Co.,Ltd. Patentee before: Shenzhen Weiyuan Medical Technology Co.,Ltd. Patentee before: Weiyuan (Shenzhen) Medical Research Center Co.,Ltd. Patentee before: Nanjing Weiyuan Medical Laboratory Co.,Ltd. Patentee before: Beijing Weiyuan Medical Laboratory Co.,Ltd. |