CN201714934U - Nut assembly and syringe with nut assembly - Google Patents
Nut assembly and syringe with nut assembly Download PDFInfo
- Publication number
- CN201714934U CN201714934U CN2010200031825U CN201020003182U CN201714934U CN 201714934 U CN201714934 U CN 201714934U CN 2010200031825 U CN2010200031825 U CN 2010200031825U CN 201020003182 U CN201020003182 U CN 201020003182U CN 201714934 U CN201714934 U CN 201714934U
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- China
- Prior art keywords
- nut
- nut assembly
- injector
- assembly
- elastic element
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- Expired - Fee Related
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Abstract
The utility model discloses a nut assembly and a syringe with the nut assembly, wherein, the nut assembly comprises a first nut, a second nut and an elastic element, the first nut and the second nut are arranged according to the axial direction, the elastic element is arranged between the first nut and the second nut, an fastener is arranged on the first nut, a corresponding fastener is arranged on the second nut; the nut assembly of the utility model can effectively eliminate the operation clearance to enable the syringe applying the nut assembly to accurately control the liquid injection amount; simultaneously, the utility model has advantages of simple structure and convenient operation.
Description
Technical field
The utility model relates to a kind of mechanical transmission mechanism, is specifically related to a kind of nut assembly, and the injector that this nut assembly is installed.
Background technique
The bolt and nut and the kind of drive thereof are widely used in industry-by-industry, especially in mechanical manufacturing field.Along with improving constantly of science and technology, in biomedicine field, the kind of drive of bolt and nut being much accounted of gradually, and being used on the injector gradually.
The validity that the injector of biomedicine field is had relatively high expectations, still, the bolt and nut mechanism that general mechanical field adopts, its drive gap, return difference are bigger, often can not be applied to biomedicine field; Also occur some in the prior art and eliminated gap, return difference mode, promptly adopted two nuts, be provided with spring between it, though this kind mode has been eliminated the gap to a certain extent, because spring can only provide axial elastic force, can't impel the synchronous rotation of two nuts, be inconvenient to use; Also have some to adopt the bolt and nut product of a plurality of nut combinations realization interlocks, still, it makes difficulty, complex structure, and after dismounting, need adjust the precision that could guarantee its elimination gap by special equipment, or regular calibration is to guarantee to disappear the crack effect.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of nut assembly, and under the prerequisite that guarantees performance accuracy, it is easy to make, simple in structure.
Two of the purpose of this utility model is, a kind of injector that adopts above-mentioned nut assembly is provided.
For achieving the above object one, the utility model adopts following technological scheme:
A kind of nut assembly, this nut assembly comprises first nut, second nut, elastic element, described first nut, second nut are according to its axially-aligned, described elastic element is between described first nut and second nut, described first nut is provided with along fastener, and described second nut is provided with corresponding fastener.
Described fastener be along described first nut shaft to the double wedge that is provided with, described corresponding link be to the recessed tooth that mates with described double wedge that is provided with along described second nut shaft.
Described elastic element is a spring.
For achieving the above object two, the utility model adopts following technological scheme:
A kind of injector, this injector comprise motor, screw rod, synchronous link, piston, syringe body, nut assembly; Described piston and described syringe body flexibly connect; Described screw rod is connected in the free end of described motor vertically; Described nut assembly comprises first nut, second nut, elastic element, described first nut, second nut are according to its axially-aligned, described elastic element is between described first nut and second nut, described first nut is provided with along fastener, and described second nut is provided with corresponding fastener; Described nut assembly is set on the described screw rod; Described first nut, piston all are fixedly connected on the described synchronous link.
Described fastener be along described first nut shaft to the double wedge that is provided with, described corresponding link be to the recessed tooth that mates with described double wedge that is provided with along described second nut shaft.
Described elastic element is a spring.
This injector also includes fixed plate, and described motor, syringe body are individually fixed in the both sides of described fixed plate.
The novel beneficial effect of this use is:
1, its nut assembly is effectively eliminated running clearance, be applied to injector after, effectively control injection precision;
2, the utility model is simple in structure, and is easy to operate.
Description of drawings
Fig. 1 is the structural representation of a kind of nut assembly of the utility model;
Fig. 2 is the perspective view of nut assembly shown in Figure 1;
Fig. 3 is the structural representation of a kind of injector of the utility model;
Fig. 4 is the perspective view of injector shown in Figure 3.
Embodiment
Below, in conjunction with the accompanying drawings and embodiment, nut assembly of the present utility model and the injector of using this nut assembly are described further:
As shown in Figure 1, be a kind of nut assembly of the present utility model, comprise first nut, 1, the second nut 4, spring 7; Wherein first nut 1 is provided with perpendicular to its two axial fins, and two fins are provided with screw thread fixed hole 2; Along first nut 1 axially, its sidewall is provided with recessed tooth 3; Second nut 4 axially is provided with double wedge 5, and this double wedge 5 is corresponding with recessed tooth 3 couplings, and width is suitable; Periphery outer periphery at second nut 4 is equipped with flange 6.The axial two ends of above-mentioned spring 7 are set on first nut 1 and second nut 4, and are installed between the flange 6 of the fin of first nut 1 and second nut 4.
Above-mentioned nut assembly is socketed in it on screw rod in use, and from first nut 1, the spacing with second nut 4 and first nut 1 under the restriction that is subjected to screw pitch is pulled to maximum to spring 7, thereby has eliminated the gap between screw rod and the nut with second nut, 4 tops; Even take place to utilize the elastic force of spring under the situation of wearing and tearing, make to reach best eliminate second nut 4 of gap effect and changing of first nut 1 apart from producing at screw rod or nut.
When above-mentioned nut assembly uses, owing to adopt coupling corresponding double wedge 5 and recessed tooth 3, win nut 1 and second nut 4 are synchronized with the movement.
Adopt bolt to pass screw thread fixed hole 2 driving component is fixed on first nut 1, then the straight line motion of first nut 1 driving component that rotatablely moving of screw rod become.
In nut assembly, moving direction be by first nut when second nut moves, adapt to automatically by spring, reach the purpose that reduces or eliminate the gap, control running precision.When the motion of relative second nut of first nut, because the cooperating of double wedge and recessed tooth, second nut is by the drive of first nut and rotate; Thereby effect that make to eliminate the gap no matter first nut all can be controlled when any end motion.
Shown in Fig. 3,4, be a kind of injector of the present utility model, it comprises center fixed plate 8, motor 9, syringe body 10, syringe piston 11, screw rod 12, synchronous link 13; Motor 9 and syringe body 10 are connected to the both sides, top of center fixed plate 8, the free end of motor 9 vertically downward, screw rod 12 is connected the free end of motor 9 vertically, above-mentioned nut assembly is socketed on the screw rod 12, nut assembly places in the synchronous link 13, and first nut 1 in the above-mentioned nut assembly is fixed on the inwall of synchronous link 13, the motion of nut assembly on screw rod, drive synchronous link 13 motions, the opening that extends along the vertical direction at center fixed plate 8, synchronous link 13 passes opening and is connected with syringe piston 11, the short transverse of syringe piston 11 injectors and syringe body 10 flexibly connect, and airtight with syringe body 10.
The driven by motor screw rod rotates, and makes nut assembly drive the longitudinal movement of piston along syringe body, thereby implements the action of injection, and in the Electric Machine Control precision, nut is eliminated the loss of significance that motor is delivered to syringe piston.
For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection domain of the utility model claim all according to technological scheme described above and design.
Claims (7)
1. nut assembly, it is characterized in that, this nut assembly comprises first nut, second nut, elastic element, described first nut, second nut are according to its axially-aligned, described elastic element is between described first nut and second nut, described first nut is provided with along fastener, and described second nut is provided with corresponding fastener.
2. nut assembly as claimed in claim 1 is characterized in that, described fastener be along described first nut shaft to the double wedge that is provided with, described corresponding link be to the recessed tooth that mates with described double wedge that is provided with along described second nut shaft.
3. nut assembly as claimed in claim 1 is characterized in that, described elastic element is a spring.
4. an injector is characterized in that, this injector comprises motor, screw rod, synchronous link, piston, syringe body, nut assembly; Described piston and described syringe body flexibly connect; Described screw rod is connected in the free end of described motor vertically; Described nut assembly comprises first nut, second nut, elastic element, described first nut, second nut are according to its axially-aligned, described elastic element is between described first nut and second nut, described first nut is provided with along fastener, and described second nut is provided with corresponding fastener; Described nut assembly is set on the described screw rod; Described first nut, piston all are fixedly connected on the described synchronous link.
5. injector as claimed in claim 4 is characterized in that, described fastener be along described first nut shaft to the double wedge that is provided with, described corresponding link be to the recessed tooth that mates with described double wedge that is provided with along described second nut shaft.
6. injector as claimed in claim 4 is characterized in that, described elastic element is a spring.
7. injector as claimed in claim 4 is characterized in that this injector also includes fixed plate, and described motor, syringe body are individually fixed in the both sides of described fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200031825U CN201714934U (en) | 2009-05-21 | 2010-01-15 | Nut assembly and syringe with nut assembly |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920056965 | 2009-05-21 | ||
| CN200920056965.7 | 2009-05-21 | ||
| CN2010200031825U CN201714934U (en) | 2009-05-21 | 2010-01-15 | Nut assembly and syringe with nut assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714934U true CN201714934U (en) | 2011-01-19 |
Family
ID=43460930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200031825U Expired - Fee Related CN201714934U (en) | 2009-05-21 | 2010-01-15 | Nut assembly and syringe with nut assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508854A (en) * | 2016-01-06 | 2016-04-20 | 珠海罗西尼表业有限公司 | Automatic oiling device |
| CN108025145A (en) * | 2015-10-01 | 2018-05-11 | 诺和诺德股份有限公司 | Piston gasket assembly, the method assembled and the delivery device for being incorporated to such piston gasket assembly |
| CN111562342A (en) * | 2020-06-19 | 2020-08-21 | 上海卓光仪器科技有限公司 | Micro-precision potentiometric titrator and titration method |
-
2010
- 2010-01-15 CN CN2010200031825U patent/CN201714934U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025145A (en) * | 2015-10-01 | 2018-05-11 | 诺和诺德股份有限公司 | Piston gasket assembly, the method assembled and the delivery device for being incorporated to such piston gasket assembly |
| CN105508854A (en) * | 2016-01-06 | 2016-04-20 | 珠海罗西尼表业有限公司 | Automatic oiling device |
| CN111562342A (en) * | 2020-06-19 | 2020-08-21 | 上海卓光仪器科技有限公司 | Micro-precision potentiometric titrator and titration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20140115 |