CN1920145A - Needle fixing device of needle selecting equipment - Google Patents
Needle fixing device of needle selecting equipment Download PDFInfo
- Publication number
- CN1920145A CN1920145A CN 200510094046 CN200510094046A CN1920145A CN 1920145 A CN1920145 A CN 1920145A CN 200510094046 CN200510094046 CN 200510094046 CN 200510094046 A CN200510094046 A CN 200510094046A CN 1920145 A CN1920145 A CN 1920145A
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- CN
- China
- Prior art keywords
- needle
- pin
- intermediate plate
- outer cover
- alignment pin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a needle fixer of needle selector, which comprises the middle plate with pin groove and needle groove that vertical and connected, two outer cover plates fixed at two side surfaces of middle plate, the needle inserted into the needle groove, the positioning pin inserted into the pin groove to lock said needle, and a driving plate connector for fixing two outer cover plates to another end of middle plate; one end of said needle has head, and middle has should needle rod, while another end has trapezium cut relative to the pin groove; the positioning pin is formed by the flexible bolt spring whose upper end has pin tail and lower end has two external protrusions in reversed U shape; said positioning pin can through the longitudinal guide groove when compressing two flexible bolt springs, and open when inserted into the trapezium cut, to lock the needle. The invention has accurate position and long service life.
Description
Technical field
The present invention relates to a kind of needle fixation device of needle selection device.
Background technology
At present, the needle fixation device of known needle selection device has many kinds, have that syringe needle and chuck fuse, also syringe needle to be arranged be gripping mechanism and chuck binding by a band plush copper tongue.The former can not change impaired syringe needle separately and need the whole needle selection of replacing to cause unnecessary loss; The latter can promptly extract impaired needle head replacing to old syringe needle, plugs new syringe needle, but the plush copper tongue damages easily when extracting and inserting, and will influence the location of gripping mechanism when changing often.
Summary of the invention
For remedying above-mentioned deficiency, the invention provides the needle fixation device of the needle selection device of a kind of accurate positioning and long service life.
Technical scheme of the present invention is such: a kind of needle fixation device of needle selection device, by the intermediate plate with the cotter way that is interconnected and needle tray, be fixed in these intermediate plate two sides two outer cover plates, can insert and be limited in pin in the needle tray of this intermediate plate, can insert this cotter way and lock the alignment pin of this needle selection and be fixed to the driving chip link and form based on this two outer cover plate.
As a further improvement on the present invention, this pin one end has that syringe needle, middle part have shoulder shape shank and the other end has trapeze cut to position that should needle tray, this alignment pin by the pin tail of upper end and lower end have two to outer lug, be inverted U-shaped flexible tongue and form, this alignment pin can pass this cotter way when this two flexible tongues extruding, and when being inserted into this trapeze cut, outside two, open, realize this pin of locking.
As a further improvement on the present invention, this intermediate plate, two outer cover plates, pin and alignment pin are that metal material is made, and this intermediate plate is connected with this two outer cover plates spot welding, and this two outer cover plate is adhesively fixed in this driving chip link.
As a further improvement on the present invention, the chuck on the needle tray both sides of this intermediate plate and the field of conjugate action of this pin have the inclined-plane of configuration, be convenient to this pin elasticity and clamp, two chucks of the end of this pin, this intermediate plate and the groove camber of this intermediate plate are beneficial to the plug and the cooperation of this pin.
As a further improvement on the present invention, this intermediate plate and this two outer cover plate have the concave surface breach simultaneously at this needle tray top, are convenient to the embedding and the taking-up of this alignment pin.
The invention has the beneficial effects as follows:
In this structure, this shank is shoulder shape and is provided with, and makes shank have enough width to guarantee the degree of depth of this breach and the intensity of shank like this.Accurate operating position is to be finished jointly by chuck, two outer cover plates of this alignment pin, intermediate plate, can manually pull out alignment pin and pin or insert without a doubt, single pin is changed under the situation that needn't dismantle other any element, also can be replaced with simultaneously the needle selection of other form, this structure can also be generalized to other various forms of needle fixation devices.
The surface slope of the A/F of the flexible tongue by this alignment pin lower end and the chuck of this intermediate plate just can be selected suitable pretightning force.This intermediate plate and this two outer cover plate all have an arc notch at this alignment pin gathering sill place, are convenient to this alignment pin plug, and the end of this pin is in the arc-shaped, and the tip of this two chuck, the groove of intermediate plate are all made camber, are beneficial to the plug and the cooperation of this pin.The width suitable for reading of this pin breach is wide slightly than the intermediate plate gathering sill, is beneficial to plug.
Description of drawings
Fig. 1 is a structural front view of the present invention, and wherein this outer cover plate is removed;
Fig. 2 is a structure vertical view of the present invention;
Fig. 3 is the intermediate plate structural representation described in the present invention;
Fig. 4 inserts the schematic diagram of the cotter way process of this intermediate plate for the alignment pin described in the present invention;
Fig. 5 is a vertical view of forming needle selection device embodiment based on described needle fixation device;
Fig. 6 is a front view of forming needle selection device embodiment based on described needle fixation device.
The specific embodiment
Be further described below in conjunction with Fig. 1 to Fig. 4:
Described needle fixation device is made up of pin 1, intermediate plate 2, alignment pin 3, outer cover plate 4 and 5, driving chip link 6 five parts, wherein pin is made up of syringe needle 7, shoulder shape shank 8, trapeze cut 9, and be integral, it mainly is in order to make the end breach that enough degree of depth be arranged that shank is designed to take on shape, and guarantee that bar has enough intensity, the front end elongated portion is in order to reduce the weight of syringe needle own, thereby reduces required driving force.The rearward end of bar is circular shape, strengthens bar guide effect during insertion.The breach of end is to mesh with the bottom of alignment pin, thereby avoids the lateral displacement of pin.
This intermediate plate has two gathering sills 10 and 11 mutually vertical and that be communicated with, and wherein cotter way 10 is in order to limit the operating position of alignment pin 3, and a semicircle breach 22 is arranged at the top, and this breach embeds and the bite that takes out as alignment pin.The arc opening of alignment pin plug all is arranged to help in the top and bottom of this cotter way, and the lower width of this cotter way is slightly less than the suitable for reading wide of rod notch, is the plug of being convenient to this alignment pin equally.This needle tray is in order to limit the operating position of pin, and the chuck 12 and 13 on both sides is closing in shapes, and promptly the field of conjugate action of chuck and pin is the inclined-plane with certain slope, like this to the effect of the flexible clamping of needle set.Being of uniform thickness of the thickness of this intermediate plate and this pin.
This alignment pin by the pin tail 32 of upper end and lower end have two to outer lug, be inverted U-shaped flexible tongue 31 and form, form accurate location by this tongue arc convex and shank breach sidewall Elastic Contact.The cotter way width of this pin tail width and this intermediate plate is complementary, and its thickness and this cotter way degree of depth are complementary, and the insertion process of this alignment pin as shown in Figure 4.
This outer cover plate length is long than intermediate plate, and this outer cover plate directly bonds to this driving chip link, by high frequency spot welding 17 welding this intermediate plate is sandwiched between these two outer cover plates.
Fig. 5 and Fig. 6 express an embodiment, wherein have one group of this type of needle fixation device 101, this intermediate plate is connected with two outer cover plate spot welding 17, and this two outer cover plate is adhesively fixed in this driving chip link 6, and the displacement of this driving chip is swung together by this driving chip link drive pin.
Claims (5)
1. the needle fixation device of a needle selection device, it is characterized in that, by the intermediate plate (2) with the cotter way (10) that is interconnected and needle tray (11), be fixed in these intermediate plate two sides two outer cover plates (4,5), can insert and be limited in pin (1) in the needle tray of this intermediate plate, can insert this cotter way and lock the alignment pin (3) of this needle selection and be fixed to driving chip link (6) and form based on this two outer cover plate.
2. the needle fixation device of a kind of needle selection device as claimed in claim 1, it is characterized in that, this pin one end has that syringe needle (7), middle part have shoulder shape shank (8) and the other end has trapeze cut (9) to position that should needle tray, this alignment pin by the pin tail (32) of upper end and lower end have two to outer lug, be inverted U-shaped flexible tongue (31) and form, this alignment pin can pass this cotter way when this two flexible tongues extruding, and when being inserted into this trapeze cut, outside two, open, realize this pin of locking.
3. the needle fixation device of a kind of needle selection device as claimed in claim 1 or 2, it is characterized in that, this intermediate plate, two outer cover plates, pin and alignment pin are that metal material is made, and this intermediate plate is connected with this two outer cover plates spot welding (17), and this two outer cover plate is adhesively fixed in this driving chip link (6).
4. the needle fixation device of a kind of needle selection device as claimed in claim 3, it is characterized in that, the field of conjugate action of the chuck on the needle tray both sides of this intermediate plate (12,13) and this pin has the inclined-plane of configuration, being convenient to this pin elasticity clamps, two chucks of the end of this pin, this intermediate plate and the groove camber of this intermediate plate are beneficial to the plug and the cooperation of this pin.
5. the needle fixation device of a kind of needle selection device as claimed in claim 3 is characterized in that, this intermediate plate and this two outer cover plate have concave surface breach (22) simultaneously at this needle tray (10) top, are convenient to the embedding and the taking-up of this alignment pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094046 CN1920145A (en) | 2005-08-23 | 2005-08-23 | Needle fixing device of needle selecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094046 CN1920145A (en) | 2005-08-23 | 2005-08-23 | Needle fixing device of needle selecting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1920145A true CN1920145A (en) | 2007-02-28 |
Family
ID=37777978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510094046 Pending CN1920145A (en) | 2005-08-23 | 2005-08-23 | Needle fixing device of needle selecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1920145A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358987A (en) * | 2011-09-26 | 2012-02-22 | 重庆胜普昂凯科技有限公司 | Needle fixing device of needle selector |
-
2005
- 2005-08-23 CN CN 200510094046 patent/CN1920145A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358987A (en) * | 2011-09-26 | 2012-02-22 | 重庆胜普昂凯科技有限公司 | Needle fixing device of needle selector |
| CN102358987B (en) * | 2011-09-26 | 2015-11-25 | 重庆胜普昂凯科技有限公司 | The needle fixation device of slide cam selector |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |