CN2922779Y - Electronic endoscope hand-wheel locking mechanism - Google Patents
Electronic endoscope hand-wheel locking mechanism Download PDFInfo
- Publication number
- CN2922779Y CN2922779Y CN 200620104215 CN200620104215U CN2922779Y CN 2922779 Y CN2922779 Y CN 2922779Y CN 200620104215 CN200620104215 CN 200620104215 CN 200620104215 U CN200620104215 U CN 200620104215U CN 2922779 Y CN2922779 Y CN 2922779Y
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- CN
- China
- Prior art keywords
- handwheel
- locking mechanism
- cam
- elastomer
- video image
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- Expired - Fee Related
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Abstract
The utility model relates to a medical instrument, in particular to an airflow pressure control system for electronic endoscopes, which comprises a hand wheel, a handle and a cam that are coaxial, wherein a positioning card is fixed on the hand wheel, and several grooves are provided along the inner circumference of the positioning card; a toggle pin is provided on bottom board of the handle; an elastic body is provided along the outer circumference of the cam. The utility model provides a hand wheel locking mechanism for electronic endoscopes, capable of stable, reliable and highly accurate positioning, to solve the technical problem with existing technologies that the positioning is not stable and is not accurate.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of video image dendoscope handwheel locking mechanism.
Background technology
Means such as the perspective of medical science utilization now, film making, ultrasound wave, nuclear magnetic resonance, NMR, check and the interior illness of diagnosis body, convenient and swift, but some pathological changes, still must direct observation, just can make a definite diagnosis and treat, the development of excellent mirror, image transmission optical fibre, electron camera technology such as (CCD) makes endoscope obtain using widely.
Development along with endoscope, patent about the endoscope aspect also has a lot, for example the someone has applied for patent " separate type endoscope (97242403.2) ", it discloses a kind of separate type medical endoscope, comprise mirror body, lens barrel, light-conducting system, mirror pipe and instrument channel, the mirror pipe is made up of scope pipe and the outer telescop that the liquid inlet and outlet valve is housed, and the prolongation of fluid passage and instrument channel is made in the gap that forms between interior outer telescop.In the video image dendoscope field, people were installed in miniature electronic video camera (CCD) on the camera lens in recent years, and image definition has been improved more than 10 times than traditional fiber scope.Can observe minute lesion and blood vessel in the patient body.It is to realize by the operator wheel mechanism that the camera lens of video image dendoscope turns to.Mostly the handwheel controlling organization that existing adjusting scope turns to is to adopt the locking mechanism of friction disk type, utilize frictional force that the relative position of handwheel is fixed, the location of the positioner of this form can only be a Position Approximate, cannot guarantee positioning accuracy, can not lock simultaneously.
Summary of the invention
It is reliable that this utility model has mainly provided a kind of positioning stablity, the video image dendoscope handwheel locking mechanism that positioning accuracy is high; It is unstable to solve the existing in prior technology location, the technical problem that precision is not high.
Simultaneously, it is a kind of simple in structure that this utility model also provides, and the handwheel locking effect is good, the video image dendoscope handwheel locking mechanism of handled easily; It is poor to have solved the handwheel locking effect that exists in the prior art, cannot determine the technical problem of the concrete fixed position of scope.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of video image dendoscope handwheel locking mechanism, comprise co-axial handwheel, handle and cam, be fixed with spacer on handwheel, spacer inner periphery direction is provided with some draw-in grooves; The base plate of handle is provided with stirs pin, and the excircle of cam is fixed with elastomer.Cam maintains static always, and the elastomeric elasticity by its excircle direction snaps in the draw-in groove on the spacer inner periphery, thus the fixing relative position of handwheel.When needs reset be, stir handle, the pin of stirring that drives on the handle moves, and stirs pin and is located at elastomeric periphery, and elastomer is close to the external peripheral surface of cam, until amplexiforming together.Because elastomer by stirring compressing of pin, has left draw-in groove, thereby has made handwheel can rotate freely again.Clamping by elastomer and draw-in groove makes that the location is more accurate, and precision is higher, positioning accuracy can reach ± and below 1 °.
As preferably, be provided with spacing preiection at the external peripheral surface of described cam.After stirring pin elastomer be pressed in cam face, in order to prevent the handle rotation excessively, be provided with spacing preiection at the outer surface of cam, after handle forwards to herein, stir pin and projection is collided, thereby determined the rearmost position of handle.
As preferably, draw-in groove is the inner circumferential surface that is distributed on spacer, and the inner periphery of spacer is the gear ring shape.The spacer inner periphery is designed to the convenient manufacturing of gear ring shape, convenient simultaneously elastomeric clamping.As more preferably, described range of numbers of teeth is 30-120.
As preferably, elastomer along the circumferential direction is furnished with two in the form of sheets, is fixed on the cam by screw, and elastomer is that centrosymmetry distributes with the axis.Elastomer in the form of sheets, required pressure is less relatively, easily operation, and flaky elasticity is also better relatively; Elastomer is symmetrically distributed, and clamping is gone in the draw-in groove, and the relative position of handwheel is fixed, and can not produce relative slip.Two elastomers are stressed relative with stability all fine.
Therefore, video image dendoscope handwheel locking mechanism of the present utility model has following advantage: 1, cooperate with teeth groove in the gear ring by elastomer, make that the location is more reliable and stable, locking back handwheel can not produce slip; 2, positioning accuracy height, the positioning accuracy of handwheel can reach ± below 1 °; 3, simple in structure, easy to operate, good positioning effect.
Description of drawings:
Fig. 1 is the overall structure sketch map of a kind of video image dendoscope handwheel locking mechanism of the present utility model.
Fig. 2 is that the elastomer among Fig. 1 snaps in the sketch map in the draw-in groove.
The specific embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical scheme of utility model is described in further detail.
Embodiment:
Shown in attached Fig. 1 and 2, a kind of video image dendoscope handwheel locking mechanism comprises co-axially fixed handwheel 1, handle 7, cam 5, on handwheel 1, be fixed with spacer 2, the inner circumferential surface of spacer 2 is evenly equipped with 30 draw-in grooves 8, and draw-in groove 8 indentations, spacer 2 are a gear ring.External peripheral surface at cam 5 adopts screw 3 to be fixed with elastomer 4, and elastomer 4 is plates, has two with the axis symmetric arrangement.Symmetricly on the base plate of handle 7 be provided with 2 and stir pin 6, the diameter of a circle of stirring pin 6 places is greater than elastomer 4 place diameter of a circles.When stirring pin 6 and be pressed on elastomer 4 on the cam 5 on the handwheel 5, the cam external peripheral surface of elastomeric tail end and cam joint is provided with projection 9.
The operation principle of video image dendoscope handwheel locking mechanism is: cam 5 is fixed on the axle always and does not rotate.When on the handle 7 stir pin 6 in position as shown in Figure 1 the time, stir pin 6 and stir elastomer 4 and abut against on the cam 5, elastomer 4 does not contact gear ring, handwheel 1 can freely rotate.When handwheel 1 needs fixedly, handle 7 counterclockwise (making progress) is stirred an angle, decontrol elastomer 4 with the pin 6 of stirring that handle 7 rotates, elastomer 4 outwards ejects under self elastic force effect, the gib head of one of them elastomer 4 injects in certain teeth groove of gear ring, handwheel 1 is locked, has limited the rotation (as shown in Figure 2) of two directions.Rationally regulate two positions of elastomer 4 on cam 5, when making the gib head of one of them elastomer 4 aim at certain tooth top of gear ring, and the gib head of another elastomer 4 is just in time aimed at a teeth groove of gear ring, like this, the handwheel positioning accuracy is doubled.
Specific embodiment described herein only is that design of the present utility model is illustrated.This utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (6)
1. a video image dendoscope handwheel locking mechanism comprises co-axial handwheel, handle and cam, it is characterized in that: be fixed with spacer (2) on handwheel (1), spacer (2) inner periphery direction is provided with some draw-in grooves (8); The base plate of handle (7) is provided with stirs pin (6), and the excircle of cam (5) is fixed with elastomer (4).
2. a kind of video image dendoscope handwheel locking mechanism according to claim 1 is characterized in that: the external peripheral surface at described cam (5) is provided with spacing preiection (9).
3. a kind of video image dendoscope handwheel locking mechanism according to claim 1 and 2 is characterized in that: draw-in groove (8) is the inner circumferential surface that is distributed on spacer (2), and the inner periphery of spacer (2) is the gear ring shape.
4. a kind of video image dendoscope handwheel locking mechanism according to claim 3 is characterized in that: described range of numbers of teeth is 30-120.
5. a kind of video image dendoscope handwheel locking mechanism according to claim 1 and 2, it is characterized in that: elastomer (4) in the form of sheets, along the circumferential direction be furnished with two, be fixed on the cam (5) by screw (3), elastomer (4) is that centrosymmetry distributes with the axis.
6. a kind of video image dendoscope handwheel locking mechanism according to claim 4 is characterized in that: elastomer (4) along the circumferential direction is furnished with two in the form of sheets, is fixed on the cam (5) by screw (3), and elastomer (4) is that centrosymmetry distributes with the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104215 CN2922779Y (en) | 2006-06-01 | 2006-06-01 | Electronic endoscope hand-wheel locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104215 CN2922779Y (en) | 2006-06-01 | 2006-06-01 | Electronic endoscope hand-wheel locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2922779Y true CN2922779Y (en) | 2007-07-18 |
Family
ID=38259204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620104215 Expired - Fee Related CN2922779Y (en) | 2006-06-01 | 2006-06-01 | Electronic endoscope hand-wheel locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2922779Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088044A (en) * | 2016-02-18 | 2017-08-25 | 深圳市先赞科技有限公司 | A kind of medical endoscope controlling organization |
| CN108209847A (en) * | 2016-12-09 | 2018-06-29 | 深圳市先赞科技有限公司 | For medical endoscope button control terminal |
-
2006
- 2006-06-01 CN CN 200620104215 patent/CN2922779Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088044A (en) * | 2016-02-18 | 2017-08-25 | 深圳市先赞科技有限公司 | A kind of medical endoscope controlling organization |
| CN108209847A (en) * | 2016-12-09 | 2018-06-29 | 深圳市先赞科技有限公司 | For medical endoscope button control terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Hawk Optical Electronic Instruments Co., Ltd. Assignor: Wang Hualin Contract record no.: 2010330000246 Denomination of utility model: Electronic endoscope hand-wheel locking mechanism Granted publication date: 20070718 License type: Exclusive License Record date: 20100317 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Hangzhou Hawk Optical Electronic Instruments Co., Ltd. Assignor: Wang Hualin Contract record no.: 2010330000246 Date of cancellation: 20130322 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20120601 |