CN211717857U - Liquid suction switch device - Google Patents
Liquid suction switch device Download PDFInfo
- Publication number
- CN211717857U CN211717857U CN201922177377.5U CN201922177377U CN211717857U CN 211717857 U CN211717857 U CN 211717857U CN 201922177377 U CN201922177377 U CN 201922177377U CN 211717857 U CN211717857 U CN 211717857U
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- China
- Prior art keywords
- connecting block
- liquid suction
- fixed plate
- micro
- needle
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- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 title claims abstract description 43
- 238000005213 imbibition Methods 0.000 claims abstract description 20
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 14
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 230000001960 triggered effect Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012502 diagnostic product Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a medical equipment technical field's a imbibition switching device, including imbibition needle, micro-gap switch, fixed plate and connecting block. The side of the connecting block is provided with a notch, the liquid suction needle vertically penetrates through the notch to be in up-and-down sliding connection with the connecting block, a bulge is arranged on the upper surface of the lower part of the notch of the liquid suction needle, and a return spring is arranged between the bulge and the lower surface of the upper part of the notch. The micro-gap switch is fixed on the fixing plate, and the reed of the micro-gap switch is positioned right above the bulge. The fixed plate is fixedly connected with the connecting block and used for limiting the rotation and displacement of the protrusion in the horizontal direction. The utility model integrates the liquid suction device and the switch device into a structural module through the linkage of the liquid suction needle and the micro switch, thereby saving space; meanwhile, the automatic reset of the liquid suction needle is realized through the reset spring, and the operation process is more convenient.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to imbibition switching device.
Background
IVD is an independent branch of medical apparatus and instruments, and is translated into in vitro diagnostic products. Certain IVD medical devices typically involve the sampling of reagents or samples during use, such as a blood analyzer or the like. In the prior art, a sampling device of a diagnostic reagent is divided into a liquid suction device and a switch device: independent liquid suction modules such as liquid suction needles, liquid suction tubes and the like are used for sampling and sucking reagents or samples; independent switch modules, such as push-contact switches and mechanical buttons, cooperate to control the pipetting device.
The above-mentioned sampling device has the following disadvantages in use:
1) large volume and large occupied space: in the prior art, the liquid suction device and the switch device are two independent modules, and are structurally unrelated, so that more space is needed for placing the two modules.
2) The user operation steps are more: when using the prior art, the user needs to perform interactive operation with other structures after putting in the sample to be tested.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough and defect of prior art, provide a little, the easy operation's of occupation space imbibition switching device.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a liquid suction switch device, includes imbibition needle, micro-gap switch, fixed plate and connecting block, the side of connecting block is equipped with the opening, imbibition needle vertically pass the opening with sliding connection about the connecting block, imbibition needle is located opening lower part upper surface department and is equipped with the arch, be equipped with reset spring between arch and the opening upper portion lower surface, micro-gap switch is fixed to be set up on the fixed plate, micro-gap switch's reed is located bellied directly over, fixed plate and connecting block fixed connection, bellied side and fixed plate contact.
Specifically, the connecting block passes through connecting axle and equipment sliding connection, the end of connecting axle is equipped with the locating plate, the position that corresponds with the imbibition needle on the locating plate is equipped with the through-hole that supplies the imbibition needle to pass.
Specifically, a limiting piece is arranged below the connecting block on the liquid suction needle, and the distance from the limiting piece to the lower surface of the connecting block is slightly larger than the distance from the protrusion to the microswitch reed.
Specifically, the contact part of the protrusion and the fixing plate is in plane butt joint.
Preferably, a sliding groove is formed in the fixing plate corresponding to the moving range of the protrusion, the protrusion is matched with the sliding groove in the fixing plate and slides up and down in the sliding groove, and the height of the sliding groove is slightly larger than the distance from the protrusion to the microswitch reed.
Compared with the prior art, the utility model following advantage and beneficial effect are included: the utility model integrates the liquid suction device and the switch device into a structural module through the linkage of the liquid suction needle and the micro switch, thereby saving space; meanwhile, the automatic reset of the liquid suction needle is realized through the reset spring, and the operation process is more convenient.
Drawings
Fig. 1 is a schematic structural diagram of a viewing angle of the present invention.
Fig. 2 is a schematic structural diagram of another view angle of the present invention.
Wherein: 1. the liquid suction needle comprises a liquid suction needle body 2, a microswitch body 21, a reed, 3, a return spring body 31, a protrusion 4, a connecting block 5, a fixing plate 6, a connecting shaft 7 and a positioning plate.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to fig. 2, the specific implementation process of the present invention is as follows:
a liquid suction switch device comprises a liquid suction needle 1, a microswitch 2, a fixing plate 5 and a connecting block 4. The side of connecting block 4 is equipped with the opening, and the vertical opening that passes of imbibition needle 1 and connecting block 4 sliding connection from top to bottom, and imbibition needle 1 is located opening lower part upper surface department and is equipped with arch 31, is equipped with reset spring 3 between arch 31 and the opening upper portion lower surface, and micro-gap switch 2 is fixed to be set up on fixed plate 5, and micro-gap switch 2's reed 21 is located arch 31 directly over, fixed plate 5 and connecting block 4 fixed connection, and the side and the fixed plate 5 contact of arch 31.
The utility model discloses the liquid suction device in the mainly used medical instrument trade IVD instrument. In addition, the device can also be applied to other industries needing to collect liquid, such as the fields of water conservancy and environmental protection instruments.
Connecting block 4 passes through connecting axle 6 and IVD instrument sliding connection, can adjust the position of this device according to the operation demand in order to adapt to the reagent container of different specifications. The tail end of the connecting shaft 6 is provided with a positioning plate 7 for limiting the moving range of the device on the connecting shaft 6, and a through hole for the liquid suction needle 1 to pass through is arranged at the position, corresponding to the liquid suction needle 1, on the positioning plate 7.
The liquid suction needle 1 is a hollow tubular structure which is formed by metal machining and is used for sucking a reagent sample to be tested, the bulge 31 is fixedly arranged on the liquid suction needle 1 and can be fixed at a corresponding position on the liquid suction needle 1 in a combined mode after being processed respectively or integrally processed with the liquid suction needle 1.
Specifically, a limiting piece (not shown in the figure) is arranged below the connecting block 4 on the liquid suction needle 1, and the distance from the limiting piece to the lower surface of the connecting block 4 is slightly larger than the distance from the protrusion 31 to the reed 21 of the microswitch 2. The micro switch 2 is a contact mechanism having a minute contact interval and a snap action mechanism and performing a switching operation with a predetermined stroke and a predetermined force, and since the distance between the inside of the reed 21 serving as the switch and the contact is relatively small, it is necessary to provide a corresponding write protect mechanism for limiting the distance of the up-and-down movement of the pipette 1, preventing the protrusion 31 from excessively contacting the reed 21, and protecting the micro switch 2 on the pipette 1.
A return spring 3 is arranged between the bulge 31 and the connecting block 4 and is used for returning the liquid suction needle 1 and also used as a contact for triggering the micro switch 2. Reset spring 3 provides elasticity for imbibition needle 1 resets, installs between arch 31 top and connecting block 4, promotes imbibition needle 1 after micro-gap switch 2 is triggered and kick-backs to the normal position.
The microswitch 2 is a component which transmits an electric signal when the protrusion 31 is triggered, transmits the electric signal to the IVD instrument when the microswitch is triggered, and the IVD instrument starts a sample inspection process.
The utility model discloses an in the implementation, can receive geminate transistors or photosensitive element replacement micro-gap switch 2 through infrared emission, the concrete implementation principle as follows:
in the first scheme, the microswitch 2 is replaced by an infrared transmitting and receiving pair tube: the transmitting tube and the receiving tube of the infrared transmitting and receiving geminate transistor are respectively arranged on two sides of the protrusion 31, the transmitting tube continuously transmits infrared light outwards, and when the protrusion 31 moves upwards along with the liquid suction needle 1 and blocks the receiving tube from receiving the infrared light, the IVD instrument receives a corresponding electric signal to trigger a liquid suction flow.
Scheme two, the microswitch 2 is replaced by a photosensitive element: the action mechanism is similar to that of the first scheme, and when the protrusion 31 moves upwards along with the liquid suction needle 1 and blocks the photosensitive element from receiving light, the IVD instrument receives a corresponding electric signal to trigger the liquid suction process. When the scheme is used, the photosensitive element is limited by the illumination condition of the surrounding environment, and a light source can be arranged at the corresponding position of the photosensitive element to replace natural light, so that the result accuracy is improved.
The connecting block 4 is used for connecting the liquid suction needle 1, the microswitch 2, the spring and the fixing plate 5 into a whole, and plays roles of positioning and switching.
The fixing plate 5 is slidably coupled to the protrusion 31, and the protrusion 31 is restricted from moving and rotating in the horizontal direction.
In the first embodiment, the contact portion of the protrusion 31 and the fixing plate 5 is in planar contact.
And in the second scheme, a sliding groove is arranged in the fixed plate 5 corresponding to the movable range of the protrusion 31, the protrusion 31 is matched with the sliding groove in the fixed plate 5 and slides up and down in the sliding groove, and the height of the sliding groove is slightly larger than the distance from the protrusion 31 to the reed 21 of the microswitch 2. The sliding groove plays a role of the limiting piece, the length of the sliding groove limits the moving range of the protrusion 31, the protrusion 31 is prevented from being excessively contacted with the reed 21, and the microswitch 2 is protected.
The utility model discloses a concrete implementation way does:
this device is integrated in the IVD instrument, and this device passes through connecting block 4 and IVD instrument sliding connection.
During operation, a sample to be tested is placed below the liquid suction needle 1, the lower end of the liquid suction needle 1 is placed in a reagent to be sampled, and when the lower end of the liquid suction needle 1 is abutted to the bottom, force is continuously applied upwards, so that the liquid suction needle 1 moves upwards under the pushing of a reagent container. The protrusion 31 moves upwards along with the liquid suction needle 1 to touch the reed 21 of the micro switch 2, and then the micro switch 2 can be triggered;
the IVD instrument starts an inspection process after receiving a trigger electric signal from the microswitch 2, and an instrument power system provides power to suck a reagent to be inspected from a container into the instrument;
the microswitch 2 can cancel the upward force application to the container after being triggered, and the liquid suction needle 1 is rebounded to the initial position by the elastic force pushing bulge 31 of the reset spring 3, and the sustainable reset function can be realized within the elastic limit range of the spring.
The utility model discloses simple structure, it is higher for prior art's imbibition structure integrated level, with switching device and the integration of imbibition device in a structure module, can realize absorbing the sample simultaneously, trigger the function of the relevant flow of instrument, need not to increase extra switch module again.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. A fluid-imbibing switch device, comprising: including imbibition needle, micro-gap switch, fixed plate and connecting block, the side of connecting block is equipped with the opening, imbibition needle vertically pass the opening with sliding connection about the connecting block, imbibition needle is located opening lower part upper surface department and is equipped with the arch, be equipped with reset spring between arch and the opening upper portion lower surface, micro-gap switch is fixed to be set up on the fixed plate, micro-gap switch's reed is located bellied directly over, fixed plate and connecting block fixed connection, bellied side and fixed plate contact.
2. A dip switch apparatus as recited in claim 1, wherein: the connecting block passes through connecting axle and equipment sliding connection, the end of connecting axle is equipped with the locating plate, the position that corresponds with the imbibition needle on the locating plate is equipped with the through-hole that supplies the imbibition needle to pass.
3. A dip switch apparatus as recited in claim 1, wherein: and a limiting piece is arranged below the connecting block on the liquid suction needle, and the distance from the limiting piece to the lower surface of the connecting block is slightly larger than the distance from the protrusion to the spring plate of the microswitch.
4. A dip switch apparatus as recited in claim 1, wherein: the contact part of the bulge and the fixed plate is in plane butt joint.
5. A dip switch apparatus as recited in claim 1, wherein: the fixed plate is provided with a sliding groove corresponding to the moving range of the bulge, the bulge is matched with the sliding groove on the fixed plate and slides up and down in the sliding groove, and the height of the sliding groove is slightly larger than the distance from the bulge to the microswitch reed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177377.5U CN211717857U (en) | 2019-12-09 | 2019-12-09 | Liquid suction switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177377.5U CN211717857U (en) | 2019-12-09 | 2019-12-09 | Liquid suction switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211717857U true CN211717857U (en) | 2020-10-20 |
Family
ID=72817048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922177377.5U Expired - Fee Related CN211717857U (en) | 2019-12-09 | 2019-12-09 | Liquid suction switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211717857U (en) |
-
2019
- 2019-12-09 CN CN201922177377.5U patent/CN211717857U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201020 |