KR20130115792A - Device for fixing cnt tip - Google Patents

Device for fixing cnt tip Download PDF

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Publication number
KR20130115792A
KR20130115792A KR1020120038443A KR20120038443A KR20130115792A KR 20130115792 A KR20130115792 A KR 20130115792A KR 1020120038443 A KR1020120038443 A KR 1020120038443A KR 20120038443 A KR20120038443 A KR 20120038443A KR 20130115792 A KR20130115792 A KR 20130115792A
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KR
South Korea
Prior art keywords
holes
intermediate member
hole
tip
cnt
Prior art date
Application number
KR1020120038443A
Other languages
Korean (ko)
Inventor
손현화
권영만
유철우
심성택
윤권하
Original Assignee
(재) 전북테크노파크
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by (재) 전북테크노파크 filed Critical (재) 전북테크노파크
Priority to KR1020120038443A priority Critical patent/KR20130115792A/en
Publication of KR20130115792A publication Critical patent/KR20130115792A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/065—Field emission, photo emission or secondary emission cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/30—Cold cathodes
    • H01J2201/304—Field emission cathodes
    • H01J2201/30446—Field emission cathodes characterised by the emitter material
    • H01J2201/30453—Carbon types
    • H01J2201/30469—Carbon nanotubes (CNTs)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/062—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
    • H01J9/025—Manufacture of electrodes or electrode systems of cold cathodes of field emission cathodes

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  • X-Ray Techniques (AREA)

Abstract

According to an aspect of the present invention, a CN tip fixing device includes: a body part including a base part on which a plurality of first holes are formed; An intermediate member stacked on the base part and having a plurality of second holes corresponding to positions of the plurality of first holes; An upper member stacked on the intermediate member and having a plurality of third holes corresponding to positions of the plurality of second holes; And a plurality of CNT tips inserted into and fixed to each of the first hole, the second hole, and the third hole at the same time. The intermediate member may include the second hole after the plurality of CNT tips are inserted. The intermediate member is moved so as to be spaced apart from the first hole, and relates to a cnt tip fixing device provided to press and fix the side of the plurality of cnt tip.

Description

CNTI Tip Fixture for X-ray Generator Tubes {DEVICE FOR FIXING CNT TIP}

The present invention relates to a device for fixing a plurality of CN tip to the electrode portion at the end of the X-ray generating tube, more specifically a body portion including a base portion formed with a plurality of first holes; An intermediate member stacked on the base part and having a plurality of second holes corresponding to positions of the plurality of first holes; An upper member stacked on the intermediate member and having a plurality of third holes corresponding to positions of the plurality of second holes; And a plurality of CNT tips inserted into and fixed to each of the first hole, the second hole, and the third hole at the same time. The intermediate member may include the second hole after the plurality of CNT tips are inserted. The intermediate member is moved so as to be spaced apart from the first hole, and relates to a cnt tip fixing device provided to press and fix the side of the plurality of cnt tip.

Conventional X-ray generators use tungsten filament as a cathode in a vacuum discharge tube. The hot electrons generated by applying heat to the tungsten filament collide with the metal target under high voltage to generate X-rays. As described above, the conventional X-ray generator based on tungsten filament is made of a huge device, excessive manufacturing cost, and various limitations in use.

In addition, the response time is slow because a preheating time for emitting electrons is required. In addition, since high temperature heat is generated at the cathode, the internal vacuum degree also decreases due to the evaporated gas when the filament evaporates when used for a long time. In addition, there is a problem in that the metal target of the anode portion is damaged to change the hot electron emission characteristics, thereby reducing the amount of X-rays.

In order to solve the above problems, domestic and foreign research institutes are using a carbon nanotube (CNT) having excellent physical and chemical durability and high conductivity as an electron emission source of an X-ray generator.

In general, electron emission sources using carbon nanotubes are mainly applied to a solution of a substance having a chemical vapor deposition (CVD) and a charge directly grown on an electrode substrate. It is prepared by electrophoresis using a moving phenomenon and screen printing using a carbon nanotube paste.

The present invention provides a device for fixing a plurality of CNT tips in the X-ray tube generating apparatus, a plurality of CNT tips in a detachable form, and can be easily inserted and fixed in the entire plurality of holes. do.

The present invention provides the following means for solving the above problems.

The present invention includes a body part 1 including a base part 10 on which a plurality of first holes 11 are formed; An intermediate member 20 stacked on the base portion 10 and having a plurality of second holes 21 corresponding to positions of the plurality of first holes 11; An upper member 30 stacked on the intermediate member 20 and having a plurality of third holes 31 corresponding to positions of the plurality of second holes 21; The first member 11, the second hole 21, and the third hole 31 includes a plurality of CNT tips 40 are inserted and fixed at the same time, the intermediate member 20, After the plurality of CNT tips 40 are inserted, the intermediate member 20 is moved so that the second hole 21 is spaced from the first hole 11 so that the plurality of CNT tips 40 are moved. It is characterized in that it is provided to press the side of the fixed.

The upper member 30 has the upper member 20 moved so that the third hole 31 is spaced apart from the second hole 21 after the plurality of CNT tips 40 are inserted. It is characterized in that it is provided to press and secure the side of the plurality of CN tip 40.

The body portion 1 further includes a side wall portion 2 forming a receiving portion 3 for receiving the intermediate member 20 and the upper member 30, wherein the side wall portion 2, Positioning member 25 that can be fixed while adjusting the horizontal position of the intermediate member 20, and characterized in that it further comprises a positionable fixing member 35 for adjusting the horizontal position of the upper member (30).

The side wall portion 2 is characterized in that the insertion portion 5 for inserting the intermediate member 20 from the side surface is further formed.

The position adjusting members 25 and 35 are combined with the upper member 30 and the intermediate member 20 by screwing to adjust a horizontal position.

The present invention provides a device for fixing a plurality of CNT tips in the X-ray tube generator, the plurality of CNT tips in a form that can be attached and detached, there is an effect that can be easily inserted and fixed in the entire plurality of holes.

1 is a block diagram of an embodiment of the CN tip fixing device according to the present invention.
Figure 2 is a block diagram of an embodiment of the CN tip fixing device according to the present invention.
Figure 3 is a block diagram of another embodiment of the CN tip fixing device according to the present invention.
4 is a block diagram of another embodiment of the CN tip fixing device according to the present invention.
5 is an explanatory view of the operation of the CNT tip fixing device according to the present invention.
6 is an explanatory view of the operation of the CNT tip fixing device according to the present invention.
7 is an explanatory view of the operation of the CNT tip fixing device according to the present invention.
8 is an explanatory view of the operation of the CNT tip fixing device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Even if the terms are the same, it is to be noted that when the portions to be displayed differ, the reference signs do not coincide.

The terms to be described below are terms set in consideration of functions in the present invention, and may be changed according to a user's intention or custom such as an experimenter and a measurer, and the definitions should be made based on the contents throughout the present specification.

As shown in Figure 1 and 3, the present invention includes a body portion (1) including a base portion 10 is formed with a plurality of first holes (11); An intermediate member 20 stacked on the base portion 10 and having a plurality of second holes 21 corresponding to positions of the plurality of first holes 11; An upper member 30 stacked on the intermediate member 20 and having a plurality of third holes 31 corresponding to positions of the plurality of second holes 21; A plurality of CNT tips 40 are inserted into and fixed to each of the first hole 11, the second hole 21, and the third hole 31.

In the present invention, the diameter of the hole is appropriately 0.35 ~ 0.4mm, but the scope of rights is not limited thereto. In addition, the length of the CN tip with respect to the diameter may be about 10mm. The tip can be 220-280 micrometers thick.

The core of the present invention is to form a plurality of holes to have the same diameter and the center on the base portion 10, the intermediate member 20, the upper member 30 which are provided to be movable in the horizontal direction with respect to each other And fixing it after inserting the CN tip 40 into each hole.

The CNT tips 40 will be described later, but are to move each member so as to deviate horizontally with respect to the members in contact with each other, and the surface of each of the holes to press each of the CNT tips 40 from the side.

For example, referring to FIG. 6, one end of the CN tip is inserted into the first hole 11. Thereafter, while the intermediate member 20 moves in a specific direction, one surface of the CN tip and the hole come into contact with each other to be supported. In addition, when the upper member 30 is moved in a direction opposite to the moving direction of the intermediate member 20, the third hole 31 is in contact with the surface opposite the surface where the CN tip is in contact with the second hole 21. Can be supported.

That is, the CNT tip 40 may be supported by allowing the inner surface or the circumferential surface of the second hole 21 and the third hole 31 and the CNT tip 40 to be supported in different directions. It is the principle of fixing against.

The intermediate member 20 has the intermediate member 20 moved so that the second hole 21 is spaced apart from the first hole 11 after the plurality of CNT tips 40 are inserted. It is characterized in that it is provided to press and secure the side of the plurality of CN tip 40.

The upper member 30 has the upper member 20 moved so that the third hole 31 is spaced apart from the second hole 21 after the plurality of CNT tips 40 are inserted. It is characterized in that it is provided to press and secure the side of the plurality of CN tip 40.

As shown in FIG. 1, the body portion 1 further includes a side wall portion 2 forming a receiving portion 3 for receiving the intermediate member 20 and the upper member 30.

The intermediate member 20 and the upper member 30 are sequentially stacked in the receiving portion. The shape of the intermediate member 20 and the upper member 30 can be any one, but since the insertion direction and position must be determined for alignment between the holes, guide surfaces 23 and 33 are formed on the side surfaces thereof. It is preferable to form the guide surface 13 in the side wall portion 2 so that the exact position can be easily known.

The lower side of the body portion 1 is formed with an electrode portion 4 for receiving electrical energy. That is, the electrode part 4 is integrally formed at the lower side of the base part 10, and provided to allow electrical contact with the bottom surface of the CN tip 40.

The side wall portion 2 is a position adjusting member 25 which can be fixed while adjusting the horizontal position of the intermediate member 20, and a position adjusting member 35 which can be fixed while adjusting the horizontal position of the upper member 30. It characterized in that it further comprises.

A feature of the present invention is to enable the intermediate member 20 and the upper member 30 to move horizontally with respect to each other to support the Centi tip from the side.

Therefore, the intermediate member 20 and the upper member 30 preferably has a margin to be moved by a predetermined distance in the horizontal direction after being accommodated in the receiving portion (3). In addition, the intermediate member 20 and the upper member 30 is preferably fixed to the side wall portion 2 and is provided with a position adjusting member capable of adjusting the distance to the side wall portion 2.

To this end, the side wall portion 2 has an adjustment hole 6 is formed, it is preferable that the structure having a threaded member is fastened to each member 20, 30 through the adjustment hole (6). Each member 20, 30 is formed with a screw groove at a position corresponding thereto, the screw thread is fastened thereto and to adjust the horizontal position of each member 20, 30 according to the rotation speed. This is illustrated in Figure 2, the number of the position adjusting member is two or more, or may be a singular or plural number.

3, the side wall portion 2 is characterized in that the insertion portion 25 for inserting the intermediate member 20 from the side surface is further formed.

In the above-described embodiment, the intermediate member 20 is inserted into the accommodation portion from the upper side, but the embodiment of FIG. 3 is inserted into the accommodation portion from the side. This has the advantage of making it easier to move and adjust the horizontal position of the intermediate member 20 in the horizontal direction.

5 to 7 illustrate the middle member 20 and the upper member after the CN tip 40 is inserted into the first hole 11, the second hole 21, and the third hole 31, which are aligned with each other. The figure which fixes the CNT tip 40 by moving 30 to the horizontal direction is shown.

 FIG. 8 shows an example of fixing each member 20 and 30 to the side wall using the positioning members 25, 35 and 36, but the scope of the present invention is limited to the number and the position thereof. It doesn't happen.

The position adjusting members 25 and 35 are combined with the upper member 30 and the intermediate member 20 by screwing to adjust a horizontal position.

As described above, it is also possible for the positioning member to be engaged with the groove provided in the intermediate member 20 and the upper member 30, but the positioning member is in a plurality of positions (for example, at three positions at 120 degree intervals). It is also possible to fix using a pushing force around the intermediate member 20 or the upper member 30.

It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

10: base portion, 11: first hole, 20: intermediate member, 21: second hole, 30: upper member, 31: third hole, 40: CN tip

Claims (5)

In the device for fixing a plurality of CN tip to the electrode portion at the end of the X-ray generating tube,
A body part 1 including a base part 10 on which a plurality of first holes 11 are formed;
An intermediate member 20 stacked on the base portion 10 and having a plurality of second holes 21 corresponding to positions of the plurality of first holes 11;
An upper member 30 stacked on the intermediate member 20 and having a plurality of third holes 31 corresponding to positions of the plurality of second holes 21;
A plurality of CNT tips 40 inserted into and fixed to the respective first holes 11, the second holes 21, and the third holes 31,
The intermediate member 20 has the intermediate member 20 moved so that the second hole 21 is spaced apart from the first hole 11 after the plurality of CNT tips 40 are inserted. It is provided to press and secure the side of the plurality of CN tip 40,
CCT tip fixture for X-ray generator tubes.
The method according to claim 1,
The upper member 30,
After the plurality of CNT tips 40 are inserted, the upper member 20 is moved so that the third hole 31 is spaced apart from the second hole 21 so that the plurality of CNT tips 40 are moved. Provided to press and fix the sides of the shells,
CCT tip fixture for X-ray generator tubes.
The method according to claim 2,
The body portion 1 further includes a side wall portion 2 forming a receiving portion 3 for receiving the intermediate member 20 and the upper member 30,
The side wall portion 2,
A position adjusting member 25 which can be fixed while adjusting a horizontal position of the intermediate member 20;
Further comprising a position adjustable member 35 that can be fixed while adjusting the horizontal position of the upper member 30,
CCT tip fixture for X-ray generator tubes.
The method according to claim 3,
The side wall portion 2,
Insertion portion 5 for inserting the intermediate member 20 from the side is further formed,
CCT tip fixture for X-ray generator tubes.
The method according to claim 3,
The position adjusting members 25 and 35 are coupled to the body portion 1 by screwing, and adjust the horizontal position of the upper member 30 and the intermediate member 20,
CCT tip fixture for X-ray generator tubes.
KR1020120038443A 2012-04-13 2012-04-13 Device for fixing cnt tip KR20130115792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120038443A KR20130115792A (en) 2012-04-13 2012-04-13 Device for fixing cnt tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120038443A KR20130115792A (en) 2012-04-13 2012-04-13 Device for fixing cnt tip

Publications (1)

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KR20130115792A true KR20130115792A (en) 2013-10-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210060312A (en) * 2019-11-18 2021-05-26 한국전자통신연구원 Electron emission structure and X-ray tube containing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210060312A (en) * 2019-11-18 2021-05-26 한국전자통신연구원 Electron emission structure and X-ray tube containing same

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