CN104939838A - Magnetic powder brush special for fingerprint extraction - Google Patents
Magnetic powder brush special for fingerprint extraction Download PDFInfo
- Publication number
- CN104939838A CN104939838A CN201410119023.4A CN201410119023A CN104939838A CN 104939838 A CN104939838 A CN 104939838A CN 201410119023 A CN201410119023 A CN 201410119023A CN 104939838 A CN104939838 A CN 104939838A
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- flexible pipe
- magnetic powder
- fingerprint
- central shaft
- magnetic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
The invention discloses a magnetic powder brush special for fingerprint extraction and relates to a criminal investigation reconnaissance tool. The magnetic powder brush special for fingerprint extraction is composed of a central shaft, a plastic head sleeve, a cylindrical magnet, a lantern ring, a push rod, a spring, a steel wire, a thumb button, a hollow handle, a flexible tube flashlight grab handle, an LED lamp holder, a switching button, a battery, a flexible tube, a circuit board, an electric wire and a round connector. The magnetic powder brush special for fingerprint extraction has the advantages that the plastic head sleeve is slidable, can slide on the central shaft along with a thrust produced by pressing the thumb button and is separated from the cylindrical magnet, and magnetic powder on the plastic head sleeve drops due to loss of magnetic force. The thumb button and the plastic head sleeve are both recovered to an initial state under the elastic force effect of the spring by releasing the thumb button. Operation is simple, and a traditional double-hand operating method is changed. The magnetic powder brush and a flashlight are tightly combined to form a whole, a traditional separated structure is changed, and the magnetic powder brush is more suitable for actual operation. In addition, the LED lamp holder can be changed along with change of the bending direction of the flexible tube so as to further facilitate discovery of fingerprints or palm prints on the scene.
Description
Technical field
The present invention relates to a kind of criminal investigation instrument, or rather, is that the one dedicated magnetic that takes the fingerprint is whitewashed.
Background technology
In daily site inspection, to the shadow of doubt at scene, technician to manifest fingerprint or the palmmprint of offender by brush magnetic powder, thus is given a clue, tries and produce evidence for the detection of case.The magnetic powder brush that existing basic unit technician uses, its head and bar portion are fixing, a metal pull bar is had in bar portion, a Magnet is fixed in pull bar one end, the other end is handle, uses after terminating, the handle of tractive metal pull bar, Magnet can the bar portion of indentation magnetic powder brush, thus the magnetic powder that head surface is adsorbed loses magnetic force and Automatic-falling.These action need both hands have coordinated, and one holds magnetic powder brush holder support portion, and another pulls the handle of dynamic metal pull bar.In addition, in the reconnaissance at criminal scene at some night, technician also needs brush magnetic powder, while take torch, these appointed conditions or operating procedure all bring great inconvenience to preliminry basic research.
Summary of the invention
The present invention mainly solves the technical problem existing for prior art, thus provides the one dedicated magnetic that takes the fingerprint to whitewash.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
The one dedicated magnetic that takes the fingerprint is whitewashed, and the described dedicated magnetic that takes the fingerprint is whitewashed and is made up of telescopic magnetic powder brush and flexible pipe torch two parts.
Described telescopic magnetic powder brush comprises central shaft, plastics headgear, cylinder-shaped magnet, the collar, push rod, spring, steel wire, thumb button and hollow handle.
Described central shaft is column plastic entity, and a cylinder-shaped magnet is inlayed in one end, and is entangled by plastics headgear; The other end is closely connected with the lever of flexible pipe torch.
Described plastics headgear, together with its wall is embedded in the ring portion of the collar.Under original state, by the effect of spring force, plastic cap cover cover tightly on center shaft.
The described collar is made by rustless steel, and quality is hard, does not deform, structure is divided into ring portion and bar portion time mobile.Cylindrical or the circle shape of ring portion, be embedded in the wall of plastics headgear, and hold on center shaft, bar portion is flat strip, is fixed on one end of push rod.
Containing push rod, spring, steel wire and thumb button in described hollow handle.
The wall of described hollow handle is folding in cavity, extension, and form a cylindrical cavity, push rod is placed in this cavity.The wall that the wall of hollow handle inwardly folded, extended inwall and the hollow handle formed forms " U " connected in star, and spring is placed in this groove.
The inwall that the wall of described hollow handle inwardly folds, extend to form, push rod and spring can be fixed on the one hand, prevent from coming off, on the other hand, the free-end of this inwall can stop thumb button excessively movement, in order to avoid push rod skids off from handle, also prevent the therefrom slippage in axle of plastics headgear simultaneously.
Described push rod is cylindric plastic entity, and one end is wrapped up by the bar portion of the collar, fixing, and the other end is connected with steel wire.
Described steel wire is stainless steel silk, and quality is hard, and not flexible or distortion, its two ends are separately fixed in push rod and thumb button.
Described spring is the spring under compressive state, and one end is placed in the groove that the outer wall of hollow handle and inwall are formed, and the other end is fixed in thumb button.Under naturalness, thumb button can be bound to the top of hollow handle by spring, makes thumb button tractive steel wire, push rod, the collar and plastics headgear, and such plastics headgear tightly will against cylinder-shaped magnet, and cover on center shaft.
Described flexible pipe torch is made up of lever, LED lamp holder, shift knob, battery, flexible pipe, circuit board, electric wire and circular connector.
Described flexible pipe is metal hose or the rubber hose of circular hollow, is not only convenient to protect the electric wire in flexible pipe, but also can fixed L ED lamp holder, and the standoff effect of tool, adjusts the illumination direction of LED lamp holder by the angle of bend changing flexible pipe.
Described LED lamp holder is the light source of flexible pipe torch, and have the advantages that brightness is strong, the life-span is long, it is fixed on flexible pipe, can change direction and the angle of illumination along with the rotation of flexible pipe.
Described circular connector is the line outlet of flexible pipe torch electric wire, is also the connector that flexible pipe is closely connected with lever.
The lever three of the central shaft of described telescopic magnetic powder brush, hollow handle and described flexible pipe torch is as a whole, during fabrication, and can integrated injection molding.
Described battery is lithium battery.
Before the dedicated magnetic that takes the fingerprint of this invention whitewashes use, press close to thumb button according to thumb, little finger of toe presses close to the mode of flexible pipe, and the special magnetic powder brush that will take the fingerprint is held in the hand, and in use, plastics headgear directly dips magnetic powder and can operate.
The dedicated magnetic that takes the fingerprint of this invention is whitewashed after use terminates, as long as technician presses thumb button gently with thumb, promotion steel wire, push rod, the collar move, drive plastics headgear to move, and be separated with cylinder-shaped magnet, the outside magnetic powder adsorbed of plastics headgear is Automatic-falling because losing magnetic force, to reach the object of the magnetic powder recycling of surplus, avoid unnecessary waste, the most important thing is, one-handed performance can realize magnetic powder and come off.
The described dedicated magnetic that takes the fingerprint is whitewashed and is organically combined by telescopic magnetic powder brush and flexible pipe torch, when insufficient light or night, more be conducive to technician and carry out site inspection, and the structure of flexible pipe torch is simple, easy to use, adjusted the illumination direction of LED lamp holder by the bending direction changing flexible pipe, what be applicable to all kinds of complicated scene reconnoitres illumination needs.This dedicated magnetic that takes the fingerprint is whitewashed with its exclusive advantage, is particularly suitable for Public Security Organs's preliminry basic research and uses.
Accompanying drawing explanation
Fig. 1 is the structural representation that the dedicated magnetic that takes the fingerprint of the present invention is whitewashed.
In figure, the 1-dedicated magnetic that takes the fingerprint is whitewashed; 2-central shaft; 3-plastics headgear; 4-cylinder-shaped magnet; 5-groove; The 6-collar; 7-push rod; 8-spring; 9-steel wire; 10-thumb button; The hollow handle of 11-magnetic powder brush; The lever of 12-flexible pipe torch; 13-LED lamp holder; 14-shift knob; 15-battery; 16-flexible pipe; The circular connector of 17-.
Detailed description of the invention
By reference to the accompanying drawings, below embodiments of the invention are described in detail, have more comprehensively its superiority and practicality to make art technology person, more deep understanding, also more explicit defining is made to protection scope of the present invention.
The present invention is to provide the one dedicated magnetic that takes the fingerprint to whitewash.
As shown in Figure 1, the dedicated magnetic that takes the fingerprint of the present invention is whitewashed 1 and is made up of telescopic magnetic powder brush and flexible pipe torch, and it mainly comprises central shaft 2, the hollow handle 11 of magnetic powder brush and the lever 12 of flexible pipe torch and flexible pipe 16.A cylinder-shaped magnet 4 is inlayed in one end of central shaft 2, and have the ring portion of the collar 6 and plastics headgear 3 to wrap up outward, the other end is connected with the lever 12 of flexible pipe torch; Push rod 7, compressibility spring 8, steel wire 9 and thumb button 10 is had in the hollow handle 11 of magnetic powder brush; Push rod 7 two ends are connected with steel wire 9 with the bar portion of the collar 6 and fixing respectively; The two ends of steel wire 9 are connected with thumb button 10 with push rod 7 respectively and fix; One end of compressibility spring 8 is fixed in " U " connected in star 5 in sky handle 11, and surrounds outside push rod 7, steel wire 9, and the other end is connected with thumb button 10.The lever 12 of flexible pipe torch is connected with central shaft 2, and there is a circular connector 17 junction, for passing of electric wire in torch and being connected of flexible pipe 16 and lever 12; Containing battery 15 and circuit board in lever 12, there is a torch switch button 14 on surface; A flexible pipe 16 is had, for the protection of electric wire and fixed L ED lamp holder 13 between circular connector 17 and LED lamp holder 13.
When using telescopic magnetic powder brush, according to thumb near thumb button 10, little finger of toe near the mode of flexible pipe 16, the dedicated magnetic that will take the fingerprint is whitewashed 1 and is held in the hand, and after plastics headgear 3 dips magnetic powder, whitewashes on-the-spot shadow of doubt gently, to manifest fingerprint or palmmprint.
After using telescopic magnetic powder brush to terminate, hold the dedicated magnetic that takes the fingerprint and whitewash 1, then thumb button 10 is pressed gently with thumb, this button will Compress Spring 8, promotion steel wire 9, push rod 7, the collar 6 move, drive plastics headgear 3 to slide, make it to be separated with cylinder-shaped magnet 4, the magnetic powder on such plastics headgear 3 outer wall is because losing the magnetic force Automatic-falling of Magnet 4.
After pressing thumb button 10, come up, it, under the elastic force effect of compressibility spring 8, automatically returns to original state.If pressing, unclamp thumb button 10 once after, plastics headgear 3 outer wall still has magnetic powder adsorb, can press again, unclamp thumb button 10, repeat several.
Use takes the fingerprint dedicated magnetic when whitewashing, need to strengthen light intensity, the shift knob 14 of flexible pipe torch can be pressed with forefinger or middle finger, after LED lamp holder 13 is bright, according to the actual demand situation at scene, forefinger, middle finger, fourth finger and little finger of toe cooperatively interact, and stir the bending direction of flexible pipe 16, to adjust the light angle of LED lamp holder 13.
Remarkable advantage of the present invention:
1, the plastics headgear in the present invention is sliding headgear, changes traditional fixed model.During use, pressing thumb button, by conducting pressure, makes it slide on center shaft, and is separated with cylinder-shaped magnet, thus makes the magnetic powder on plastics headgear outer wall lose magnetic force and Automatic-falling.Unclamp thumb button, it automatically returns to original state under the effect of compressibility spring force, as long as the pressing of whole process, unclamp thumb button and can complete, operation is extremely simple, convenient, changes traditional bimanualness method.
2, the cylinder-shaped magnet in the present invention inlays, is fixed in the axis body of central shaft, changes structure in the past, namely move along with pulling of metal pull bar.
3, the torch in the present invention is flexible pipe torch, and according to the actual demand of technician, the light angle of LED lamp holder can change along with the rotation of flexible pipe, is more conducive to the discovery of fingerprint or palmmprint in scene.
4, the telescopic magnetic powder brush in the present invention and flexible pipe torch organically combine, and what form integration reconnoitres equipment, changes traditional separate type, is convenient to technician and carries and operate, be more conducive to carrying out of site inspection.
The above, be only preferred embodiment of the present invention, and not in order to limit the scope of the invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., be all encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (10)
1. the dedicated magnetic that takes the fingerprint whitewashes 1, it is characterized in that: be made up of telescopic magnetic powder brush and flexible pipe torch, described telescopic magnetic powder brush comprises central shaft 2, plastics headgear 3, cylinder-shaped magnet 4, the collar 6, push rod 7, spring 8, steel wire 9, thumb button 10 and hollow handle 11; A cylinder-shaped magnet 4 is inlayed in described central shaft 2 one end, and is entangled by plastics headgear 3, and the other end is closely connected with the lever 12 of flexible pipe torch; The described collar 6 is divided into ring portion and bar portion, and ring portion is embedded in the wall of plastics headgear 3, and surrounds on central shaft 2, and bar portion is flat strip, is fixed on one end of push rod 7; The inwall that wall inwardly folds, extension is formed of described hollow handle 11 and outer wall form " U " connected in star 5, and spring 8 is placed in this groove 5; Described flexible pipe torch comprises lever 12, LED lamp holder 13, shift knob 14, battery 15, flexible pipe 16, circuit board, electric wire and circular connector 17; Described flexible pipe 16 is metal hose or the rubber hose of circular hollow, is not only convenient to protect the electric wire in flexible pipe, but also can fixed L ED lamp holder 13, is adjusted the illumination direction of LED lamp holder 13 by the angle of bend changing flexible pipe 16.
2. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: described central shaft 2 is column plastic entity, one end studs with a cylinder-shaped magnet 4, and hold by the ring portion of plastics headgear 3 and the collar 6, the other end is closely connected with the lever 12 of flexible pipe torch.
3. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: described plastics headgear 3 is sliding headgears, be wrapped in one end of central shaft 2, and the wall of plastics headgear 3 is closely connected with the collar 6, after pressing thumb button 10, by conducting pressure, it is made to slide on central shaft 2, and be separated with cylinder-shaped magnet 4, the magnetic powder on plastics headgear 3 outer wall is Automatic-falling because losing magnetic force; Unclamp thumb button 10, it is under the effect of compressibility spring 8 elastic force, plastics headgear 3 can automatically return to original state, and tightly be enclosed within central shaft 2, enclose cylinder-shaped magnet 4, can complete as long as whole process presses, unclamp thumb button 10, operation is extremely simple, convenient, changes traditional bimanualness method.
4. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: described Magnet 4 is cylinder-shaped magnet, a part is embedded in central shaft 2, remaining part is divided and is in free state, and wrapped up by plastics headgear 3, it has magnetic force, magnetic powder can be adsorbed on the outer wall of plastics headgear 3.
5. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: the described collar 6 is stainless steel, quality is hard, not yielding, structure is divided into ring portion and bar portion, ring portion is connected with the wall of plastics headgear 3, surrounds on central shaft 2, bar portion is flat strip, is connected, fixes with push rod 7.
6. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, and it is characterized in that: described spring 8 is the spring under compressive state, and one end is placed in the groove 5 that the outer wall of hollow handle 11 and inwall are formed, and the other end is fixed in thumb button 10.
7. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: when described thumb button 10 is pressed, pressure by promoting the conduction of steel wire 9, push rod 7, the collar 6, promote plastics headgear 3 and moving, and being separated with cylinder-shaped magnet 4; Unclamp thumb button 10, it, under the elastic force effect of spring 8, restPoses.
8. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: described LED lamp holder 13 is light source, have the advantages that brightness is strong, the life-span is long, it is fixed on flexible pipe 16, direction and the angle of illumination can be changed along with the rotation of flexible pipe 16, be more conducive to the discovery of fingerprint or palmmprint in scene.
9. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, and it is characterized in that: described flexible pipe 16 is metal hose or the rubber hose of circular hollow, not only for the protection of the electric wire in flexible pipe, but also has the effect of fixed L ED lamp holder 13.
10. the one according to claim 1 dedicated magnetic that takes the fingerprint is whitewashed, it is characterized in that: described telescopic magnetic powder brush and flexible pipe torch organically combine, form a unified entirety, change traditional separate type, during fabrication, by the central shaft 2 of telescopic magnetic powder brush, hollow handle 11 and the lever 12 three in one injection mo(u)lding of flexible pipe torch, more can be conducive to application in actual combat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119023.4A CN104939838A (en) | 2014-03-27 | 2014-03-27 | Magnetic powder brush special for fingerprint extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119023.4A CN104939838A (en) | 2014-03-27 | 2014-03-27 | Magnetic powder brush special for fingerprint extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104939838A true CN104939838A (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410119023.4A Pending CN104939838A (en) | 2014-03-27 | 2014-03-27 | Magnetic powder brush special for fingerprint extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104939838A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175786A (en) * | 2016-07-13 | 2016-12-07 | 泉州圣源警用侦察设备有限公司 | A kind of fingerprint manifestation brush automatically |
| CN107581759A (en) * | 2017-09-21 | 2018-01-16 | 泉州圣源警用侦察设备有限公司 | A kind of automatic magnetic fingerprint brush |
| CN108498103A (en) * | 2018-03-30 | 2018-09-07 | 李刚 | Fingerprint on site and its pollution-free dual extracting methods of DNA |
| CN109833046A (en) * | 2019-04-01 | 2019-06-04 | 湖南警察学院 | A kind of Magnetic brush suitable for one-handed performance |
| CN110054134A (en) * | 2019-05-15 | 2019-07-26 | 四川大学华西医院 | A kind of disposable ampoule disinfection opener |
-
2014
- 2014-03-27 CN CN201410119023.4A patent/CN104939838A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175786A (en) * | 2016-07-13 | 2016-12-07 | 泉州圣源警用侦察设备有限公司 | A kind of fingerprint manifestation brush automatically |
| CN107581759A (en) * | 2017-09-21 | 2018-01-16 | 泉州圣源警用侦察设备有限公司 | A kind of automatic magnetic fingerprint brush |
| CN108498103A (en) * | 2018-03-30 | 2018-09-07 | 李刚 | Fingerprint on site and its pollution-free dual extracting methods of DNA |
| CN109833046A (en) * | 2019-04-01 | 2019-06-04 | 湖南警察学院 | A kind of Magnetic brush suitable for one-handed performance |
| CN109833046B (en) * | 2019-04-01 | 2023-04-28 | 湖南警察学院 | Be suitable for magnetic brush of single hand operation |
| CN110054134A (en) * | 2019-05-15 | 2019-07-26 | 四川大学华西医院 | A kind of disposable ampoule disinfection opener |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |