CN201514923U - Cathode assembly and X-ray tube with same - Google Patents
Cathode assembly and X-ray tube with same Download PDFInfo
- Publication number
- CN201514923U CN201514923U CN2009202167189U CN200920216718U CN201514923U CN 201514923 U CN201514923 U CN 201514923U CN 2009202167189 U CN2009202167189 U CN 2009202167189U CN 200920216718 U CN200920216718 U CN 200920216718U CN 201514923 U CN201514923 U CN 201514923U
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- cathode
- filament
- groove
- taps
- shield
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- Expired - Lifetime
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- 229910000679 solder Inorganic materials 0.000 description 4
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- 239000011810 insulating material Substances 0.000 description 1
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- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a cathode assembly of an X-ray tube. The cathode assembly comprises a cathode head and a cathode shield, wherein, at least two gear wires are arranged on the cathode head; a filament is connected to the gear wires; the cathode shield is provided with at least one filament groove; and when the cathode head is fixed in the cathode shield, the filament is in the filament groove. In the cathode assembly provided by the utility model, the structure of the cathode head is simplified, so that the structure of the whole cathode assembly is simplified; meanwhile, the utility model adopts the embedded structure, so as to realize open welding of the filament, reduce difficulty in welding the filament, well eliminate the phenomena of insufficient welding and sealing off of welding points, have low possibility of filament pin fracture during welding the filament, improve filament welding quality, and save mechanically processing cost of the cathode head.
Description
Technical field
The utility model relates to the X-ray tube technical field, particularly a kind of cathode assembly and a kind of X-ray tube that comprises this cathode assembly.
Background technology
The cathode assembly of X-ray tube is normally by cathode taps, cathode shield, filament, sleeve pipe, shelves silk, stem stem, getter and some connectors formations such as (as fixed screw, connecting lines).Wherein, the effect of stem stem is that negative electrode and outside glass bulb are carried out sealing-in; The effect of shelves silks and sleeve pipe is filament is fixed and to be welded; Cathode shield has played the effect of protecting whole cathode assembly as the outermost end of whole negative electrode.The cathode taps that has the filament groove and focus on groove be in the traditional cathode assembly the most complexity also be the most key parts, its effect is that filament is fixed on cathode taps internal filaments groove place allocation really, to reach the focusing effect of expection.
In order to realize the accurate location of filament, need a special filament welding jig usually at the cathode taps interior location.This mould is not only wanted to guarantee the accurate location of filament in position, filament groove place, also wants to realize the Welding Problems of filament after the cathode taps interior location is accurately located.Traditional cathode assembly is because filament is the inside that is contained in whole cathode taps, and how the Welding Problems of fine solution filament after the cathode taps interior location is accurately located is the key of accurately assembling cathode assembly.
At present, the common mode that adopts is that the pinpoint position of filament is got a fabrication hole that can allow capillary enter and weld cathode taps inside and solved this problem on cathode taps.
When adopting this structure of welding process hole, because the restriction of cathode taps self size, the size of this welding process hole can only be limited in about 5mm.Have only the welding of carrying out filament in the space of 5mm at diameter, increased the welding difficulty of assembling cathode assembly greatly.At first, be restricted on the visual field, be difficult to observe the welding situation of filament from best angle; Secondly, be restricted in the operation, capillary is difficult in the adjustment of carrying out wide-angle in the 5mm space; At last, be restricted on the location of solder joint, because solder joint all is inside in cathode taps, and solder joint also has one section distance to cathode outer surface, and it is also comparatively difficult therefore to control suitable spot size.
In addition, when cathode taps adopts welding process hole to solve the filament Welding Problems, on structure, increased the complexity of cathode taps structure; Concerning machining, increased the manufacturing procedure of machining, improved the difficulty of making, also improved the cost of making simultaneously.
The utility model content
In view of this, the utility model proposes a kind of cathode assembly, its purpose is, simplifies the structure of cathode assembly, is convenient to the welding of filament.The utility model also will provide a kind of X-ray tube that comprises above-mentioned cathode assembly.
Therefore, the invention provides a kind of cathode assembly, be used for X-ray tube, comprising:
A cathode taps is furnished with at least two shelves silks on this cathode taps, and is connected with a filament on two shelves silks;
A cathode shield has at least one filament groove;
Wherein, when described cathode taps was fixed in the described cathode shield, described filament was arranged in described filament groove.
Preferably, described cathode taps has a circle groove, and two sides of this groove are V-shaped; Described cathode shield has at least three screws; When described cathode taps was fixed in the described cathode shield, the position of described screw was corresponding with the position of described v-depression; The screw that a plurality of and described screw cooperates passes described screw, is against v-depression near on the side of filament.
Preferably, described shelves silk extends the surface of described cathode taps.
Preferably, described filament is given prominence to the outside on described cathode taps surface.
Preferably, described shelves silk and filament adopt and are welded to connect.
Preferably, between shelves silk and cathode taps, be furnished with sleeve pipe.
Preferably, described cathode taps has at least two through holes, and described shelves silk is arranged in the described through hole.
Preferably, described cathode shield has at least one and focuses on groove, and described filament groove is positioned at the inside of corresponding focusing groove.
Preferably, described cathode shield comprises that two focus on groove and corresponding two filament grooves, and described cathode assembly has two filaments; When described cathode taps was fixed in the described cathode shield, two filaments were arranged in a filament groove separately.
The present invention also provides a kind of X-ray tube, comprises an aforesaid cathode assembly.
From such scheme, as can be seen,, compare, simplified the structure of cathode taps, thereby simplified the structure of whole cathode assembly with traditional cathode assembly because cathode assembly of the present utility model has adopted above-mentioned damascene structures.And, because the utility model has adopted above-mentioned damascene structures, can carry out the open welding of filament, reduced the difficulty of filament welding, avoided the generation of solder joint rosin joint and sealing-off phenomenon well, reduce the fracture possibility of filament foot in the filament welding process, improved the quality of filament welding, saved the machining cost of cathode taps.
Description of drawings
The schematic diagram of the cathode taps when Fig. 1 and Fig. 2 are unassembled filament, wherein, Fig. 1 is the top view of cathode taps, Fig. 2 is the profile of cathode taps.
Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are the schematic diagram of the cathode taps when filament being installed, wherein, Fig. 3 is for seeing lateral plan in the past from a direction, and Fig. 4 is for seeing lateral plan in the past from other direction, Fig. 5 is the top view of cathode taps, and Fig. 6 is the profile of cathode taps.
Fig. 7 and Fig. 8 are the schematic diagram of cathode shield, and wherein, Fig. 7 is the top view of cathode shield, and Fig. 8 is the profile of cathode shield.
Fig. 9, Figure 10 and Figure 11 are the schematic diagram of the cathode assembly after assembling, and wherein, Fig. 9 is the top view of cathode assembly, and Figure 10 is the profile of cathode assembly, and Figure 11 is the side schematic view of cathode assembly.
Reference numeral in the accompanying drawing is as follows:
Cathode taps 1 cathode shield 2 through holes 3
Shelves silk 4 sleeve pipes 5 filaments 6
Focus on groove 7 filament grooves 8 grooves 9
Screw 10 screws 11
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, by the following examples the utility model is further described.
The utility model adopts the cathode assembly of damascene structures, and this cathode assembly is used for X-ray tube.
Cathode assembly of the present utility model mainly comprises a cathode taps 1 and a cathode shield 2.
As depicted in figs. 1 and 2, have two through holes 3 (among the figure be example with four through holes) on the cathode taps 1 at least.As Fig. 3-shown in Figure 6, be furnished with a shelves silk 4 in each through hole 3, and can be furnished with a sleeve pipe 5 between every shelves silk 4 and the cathode taps 1, be used for fixing shelves silk 4.
As Fig. 3 and shown in Figure 6, on two shelves silks 4, can connect a filament 6, filament 6 energising back under the effect of high pressure to the anode (not shown) emitting electrons of X-ray tube.Usually, between filament 6 and the shelves silk 4 by being welded to connect.Two shelves silks 4 that connect same filament 6 might as well be called a pair of shelves silk.As shown in Figure 6, for two sleeve pipes on a pair of shelves silk, one of them sleeve pipe is made by electric conducting material, and another sleeve pipe is made by insulating material (for example pottery).
As Fig. 3, Fig. 4, Fig. 6 and shown in Figure 10, shelves silk 4 stretches out the upper surface of cathode taps 1.For the ease of welding, the end of shelves silk 4 is curved shape, for example is bent to the upper surface that is parallel to cathode taps 1 from the upper surface perpendicular to cathode taps 1.Filament foot is welded on respectively on a pair of shelves silk 4.The filament 6 of assembling back (by welding) is further given prominence in the outside of the upper surface of cathode taps 1, so that be embedded in the filament groove 8 of cathode shield 2.
Then introduce cathode shield.As shown in Figure 7 and Figure 8, cathode shield 2 has at least one focusing groove 7 and corresponding filament groove 8.Filament groove 8 is positioned at the inside of corresponding focusing groove 7.
As Fig. 9 and shown in Figure 10, when cathode taps 1 was fixed in the cathode shield 2, filament 6 just in time was arranged in filament groove 8.In the embodiment shown in the figures, cathode shield 2 comprises that two focus on groove 7 and corresponding two filament grooves 8, and cathode taps 1 has two filaments 6, and when cathode taps 1 was fixed in the cathode shield 2, two filaments 6 just in time were arranged in a filament groove 8 separately.Adopt two or two above filaments, multiple cathode current can be provided, satisfy the requirement of different application scenarios.
As Fig. 2, Fig. 3, Fig. 4, Fig. 6 and shown in Figure 10, cathode taps 1 also has a circle groove 9, and two sides of groove 9 are V-shaped.Two V-shaped sides can be intersected, also can be non-intersect, and promptly groove 9 can have a bottom surface.
As Fig. 8, Figure 10 and shown in Figure 11, cathode shield 2 has at least three screws 10.When cathode taps 1 is fixed in the cathode shield 2, on the cathode shield 2 on the position of screw 10 and the cathode taps 1 position of V-shaped groove corresponding.Cathode assembly also correspondingly comprises at least three screws 11, and these screws can cooperate with the screw 10 on the cathode shield 2.In the cathode assembly after assembling, these screws pass corresponding screw 10, are against groove 9 near on the side of filament 6, thereby cathode taps 1 can be against in the cathode shield 2, make cathode assembly more firm.
Use the cathode assembly of said structure, its concrete assembling process is as follows:
At first, then a filament foot and a shelves wire foot are carried out open welding, form the cathode taps (as Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6) after assembling on sleeve pipe 5 and grade silk 4 cathode taps 1 that are fixed on as depicted in figs. 1 and 2.With pack into the correct position of cathode shield 2 as shown in Figure 7 and Figure 8 of cathode taps 1 integral body after the assembling, make filament 6 just in time be positioned at filament groove 8, use three screws 11 that cathode taps 1 and cathode shield 2 are fixed, final formation has filament and filament groove, focuses on the cathode assembly (as Fig. 9, Figure 10 and shown in Figure 11) that groove matches.
Embedded cathode assembly of the present utility model has reduced the complexity of cathode taps structure.Simultaneously, this structure can provide open filament welding manner, has also improved the quality of filament welding.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a cathode assembly is used for X-ray tube, it is characterized in that, comprising:
A cathode taps is furnished with at least two shelves silks on this cathode taps, and is connected with a filament on two shelves silks;
A cathode shield has at least one filament groove;
Wherein, when described cathode taps was fixed in the described cathode shield, described filament was arranged in described filament groove.
2. cathode assembly according to claim 1 is characterized in that, described cathode taps has a circle groove, and two sides of this groove are V-shaped; Described cathode shield has at least three screws; When described cathode taps was fixed in the described cathode shield, the position of described screw was corresponding with the position of described v-depression; The screw that a plurality of and described screw cooperates passes described screw, is against v-depression near on the side of filament.
3. cathode assembly according to claim 1 is characterized in that, described shelves silk extends the surface of described cathode taps.
4. cathode assembly according to claim 1 is characterized in that described filament is given prominence to the outside on described cathode taps surface.
5. cathode assembly according to claim 1 is characterized in that, described shelves silk and filament adopt and be welded to connect.
6. cathode assembly according to claim 1 is characterized in that, is furnished with sleeve pipe between shelves silk and cathode taps.
7. cathode assembly according to claim 1 is characterized in that described cathode taps has at least two through holes, and described shelves silk is arranged in the described through hole.
8. cathode assembly according to claim 1 is characterized in that, described cathode shield has at least one and focuses on groove, and described filament groove is positioned at the inside of corresponding focusing groove.
9. cathode assembly according to claim 8 is characterized in that, described cathode shield comprises that two focus on groove and corresponding two filament grooves, and described cathode assembly has two filaments; When described cathode taps was fixed in the described cathode shield, two filaments were arranged in a filament groove separately.
10. an X-ray tube is characterized in that, comprises one as each described cathode assembly among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202167189U CN201514923U (en) | 2009-09-21 | 2009-09-21 | Cathode assembly and X-ray tube with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202167189U CN201514923U (en) | 2009-09-21 | 2009-09-21 | Cathode assembly and X-ray tube with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514923U true CN201514923U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202167189U Expired - Lifetime CN201514923U (en) | 2009-09-21 | 2009-09-21 | Cathode assembly and X-ray tube with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514923U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903589A (en) * | 2012-10-31 | 2013-01-30 | 丹东奥龙射线仪器有限公司 | Plug and play filament device of open type micro-focus X-ray tube |
| CN108364842A (en) * | 2017-01-26 | 2018-08-03 | 万睿视影像有限公司 | Electric connector for multiple transmitter cathodes |
| CN108470668A (en) * | 2018-03-09 | 2018-08-31 | 南京航空航天大学 | A kind of more target x-ray sources of magnetic field modulation for the communication of space X ray |
-
2009
- 2009-09-21 CN CN2009202167189U patent/CN201514923U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903589A (en) * | 2012-10-31 | 2013-01-30 | 丹东奥龙射线仪器有限公司 | Plug and play filament device of open type micro-focus X-ray tube |
| CN108364842A (en) * | 2017-01-26 | 2018-08-03 | 万睿视影像有限公司 | Electric connector for multiple transmitter cathodes |
| CN108470668A (en) * | 2018-03-09 | 2018-08-31 | 南京航空航天大学 | A kind of more target x-ray sources of magnetic field modulation for the communication of space X ray |
| CN108470668B (en) * | 2018-03-09 | 2019-12-10 | 南京航空航天大学 | Magnetic field modulation multi-target X-ray source for space X-ray communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |