• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    X-ray target assembly (24) having a central hub member (26) attached to a drive shaft (22); an outer disk (28) releasably secured to the outer periphery of the center hub member; and a target member (30) fixed to an outer disk surface; wherein the outer disk is formed by a plurality of partial peripheral disk parts detachably assembled to form the outer disk and each having a male connector formed on a disk inner peripheral part; its outer periphery has a plurality of locking slots for releasably receiving the connector elements to secure the outer disk to the center hub member; and wherein the partial peripheral pulley parts are detachable both from each other and from the center hub member separately.
    公开号:AT13034U1
    申请号:TGM8022/2010U
    申请日:2006-08-10
    公开日:2013-04-15
    发明作者:
    申请人:Gen Electric；
    IPC主号:
    专利说明:

    Austrian Patent Office AT 13 034 Ul 2013-04-15
    Description [0001] The present invention relates generally to an X-ray target assembly, and more particularly to an X-ray target assembly having a center hub member secured to a drive shaft, an outer disk releasably secured to the outer periphery of the center hub member, and a target member secured to an outer disk surface.
    Modern medical imaging systems have increasing complexity and performance. These increases often result in an increase in the power requirement and associated wear of such devices. This is the case with the X-ray tube arrangements. Increasing the power requirement of the imaging assembly may result in an increase in the required rotational speeds of the X-ray target assembly to avoid overheating and damage. These increased rotational speeds can result in large hub voltages exceeding the design criteria. The hub is the central part of the target assembly which is in communication with the drive shaft.
    In addition to the additional stresses associated with the increase in power demand, even the target assembly will experience an increase in wear and thermal damage. It is known that these increasing stress factors cause damage to the impact areas of the target element. In addition, the thermal energy can be transmitted via the target assembly to the hub region. This increase in thermal energy in combination with increasing stresses due to increased rotational speeds can cause undesirable wear and damage to the hub member.
    In any embodiment of an X-ray target assembly, it is likely that the target element or its parts will suffer damage during prolonged operation. This is simply a predetermined result of the fact that the target element is hit by an electron beam to allow the generation of X-rays. However, if the wear or damage becomes too great, the existing designs must be completely replaced. Dismantling and repair of the present embodiments are not intended and may be impractical with regard to the design and the corresponding costs. Since such wear and damage can only be minimized, it would be advantageous to provide an embodiment with the possibility of replacing worn or defective parts of the target element. Moreover, if the repair is still not cost effective, an embodiment would provide desirable cost advantages that allow reuse of at least a portion of the target assembly.
    The invention aims to provide an X-ray tube target assembly of the initially stated kind which allows easy replacement of worn or damaged target elements. The X-ray tube target assembly is intended in particular to withstand high rotational speeds and the increasing thermal requirements of modern anode performance.
    The X-ray target assembly according to the invention achieves this by the fact that the outer disk is formed by a plurality of partial peripheral disk parts, which are detachably assembled to form the outer disk and each have a catch element formed on a Scheibeninnenum-catching part; the center hub member having on its outer periphery a plurality of locking slots for releasably receiving the male connecting members to secure the outer disc to the center hub member; and wherein the partial peripheral pulley parts are detachable both from each other and from the center hub member separately.
    In a preferred embodiment, the connector elements are formed by Tannenbaumenweiterungen. A further preferred embodiment is characterized in that the center hub element in the region of the locking slots has a predetermined hub cross-sectional width, and the outer disc in its inner region and in its outer region each have a predetermined cross-sectional width wherein the cross-sectional width in the inner region is smaller than the hub cross-sectional width.
    Further features of the invention will become apparent from the detailed description of the preferred embodiment with reference to the accompanying drawings and the appended claims.
    FIG. 1 is an illustration of an x-ray tube assembly according to the present invention. FIG
    Invention.
    FIG. 2 is a cross-sectional view of the X-ray tube target assembly shown in FIG. 1. FIG.
    FIG. 3 is a detailed view of the X-ray tube target assembly shown in FIG. 2. FIG.
    FIG. 4 is a detail of another embodiment of the x-ray tube target assembly shown in FIG. 2. FIG.
    Fig. 6 is a detailed view of another embodiment of the X-ray tube target assembly shown in Fig. 2. is a detailed view of another embodiment of the X-ray tube T argetanordnung shown in Fig. 2.
    Fig. 1 is an illustration of an x-ray tube assembly 10 in accordance with the present invention. The arrangement 10 has a tube housing 12. The present invention provides a variety of tube housings 12. The tube housing 12 comprises inside a cathode assembly 14, in which 16 electrons are collected via a cathode discharge tray and ejected in the direction of the anode assembly 18. The anode assembly 18 includes an anode drive assembly 20 that rotates an anode drive shaft 22 that in turn rotates an x-ray tube target assembly. According to the prior art of the X-ray tubes, it is known that the electrons generated by the cathode assembly 14 impinge on the X-ray tube target assembly 24 and cause the generation of gamma or X-rays.
    The impact of the electrons on the x-ray tube target assembly 24 generates considerable heat and wear. The present invention contemplates such stress factors by forming the x-ray tube target assembly 24 as a hub hub member 26 and outer disk 28. A target member 30 is fixed to the outer disk 28. The outer disk 28 is releasably secured to the center hub member 26 such that if the target member 30 experiences an undesirable amount of wear or damage, the outer disk 28 may be replaced while the hub member 26 remains. In addition to replacement, the present invention allows cost savings by reusing undamaged parts of the target assembly 24 in new arrangements. The molybdenum used in the target assemblies 24 is expensive, and the present invention allows it to be reused to provide advantageous cost savings. In addition, the hub member 26 can be optimized to withstand the stresses transmitted across the anode drive assembly 20 while the outer disk 208 can be optimized to withstand the thermal energy caused by the electron impact.
    According to a particular embodiment, the hub member 26 has an increased cross-sectional width 32 to reduce stresses due to the transmitted from the anode drive shaft 22 centric load. In addition, the outer pane 28 suitably comprises an outer pane section width 34, which is arranged on the outer periphery 35 of the outer pane, and an inner pane section width 36, which at the 2/6 Austrian Patent Office AT13 034U1 2013-04-15
    Inner circumference 38 of the outer pane is arranged. The inner disk section width 36 is desirably smaller than the outer disk section width 34 to prevent thermal transfer from a target member 36 to a hub member 26. A cone 40 may be disposed in the transition between the inner disk cross-sectional width 36 and the hub cross-sectional width 32 in order to reduce further stresses. The target element 36 is fixed to the upper outer disk surface 42 of the outer disk 28.
    It is contemplated that the target assembly 24 may be formed in a variety of configurations, such that the outer disk 28 is releasably secured to the center hub member 26. FIG. 3 illustrates one such embodiment and prefers the use of tab extensions 44 formed on the inner disc periphery 38 and corresponding locking slots 46 (or 46 ', 46 ") formed on the outer hub periphery 48. The tab extensions 44 engage the locking slots 46 and lock the outer disc 28 to the hub member 26. Although locking slots 46 may be used, other measures such as pin members 50 and tabs 66 (see FIG. 5) or screw members 52 (see FIG ) along with openings 66 ', 66 "are considered. The present invention contemplates simplified fabrication, assembly, and disassembly of the outer disk 28 of the hub member 26 to permit cost-effective manufacturing, part utilization, repair, and replacement. Although a variety of tab / slot combinations are contemplated, one embodiment contemplates the use of fir tree extensions 44 and slots as illustrated in FIGS. 3 and 4.
    While the outer pane 28 may be formed as a single element, the advantages of cheap assembly, recycling or repair resulting from the present application are further enhanced if the outer pane 28 has a plurality of partial peripheral pane portions 54. The flap extension 44 may be formed on the inner pane periphery 56 of each partial peripheral pane 54. By forming the outer disk 28 from a plurality of partial disk parts, only the affected partial peripheral disk part 54 needs to be replaced or removed before reuse if a small segment of the target element 36 is damaged. This provides the X-ray tube targets an undiscovered level of reuse, maintenance and cost efficiency.
    Although the partial peripheral disk parts 54 may be mounted in various ways, one embodiment contemplates the use of side tabs 58 formed on a first radial side 60 of the partial peripheral disk part 54. Opposite the first radial side 60, a side slot 64 is formed on the second radial side 62. FIG. 4 shows that in this manner each side tab 58 engages the side slot 64 of an adjacent peripheral peripheral disk member 54 to form a fixed outer panel 28. It is preferred that each partial disk portion 54 has its own lobe extension 44 for connection to the hub periphery 48.
    Although particular embodiments of the invention have been shown and described in detail, numerous changes and variations of the embodiments may be made by those skilled in the art. Therefore, the teaching of the invention should be limited only in the sense of the attached claims. 3.6
    权利要求:
    Claims (4)
    [1]
    Austrian Patent Office AT 13 034 Ul 2013-04-15 Claims 1. X-ray target assembly (24) with a center hub element (26) attached to a drive shaft (22); an outer disk (28) releasably secured to the outer periphery of the center hub member; and a target member (30) fixed to an outer disk surface (42); the outer disk (28) being formed by a plurality of partial peripheral disk parts (54) detachably assembled to form the outer disk (28) and each having a male connector member (44) formed on a disk inner peripheral member (56); the center hub member (26) having on its outer periphery (48) a plurality of locking slots (46) for releasably receiving the male connector members (44) to secure the outer panel (28) to the center hub member (26); and wherein the partial peripheral disk parts (54) are detachable both from each other and from the center hub member (26) separately.
    [2]
    2. Röntgentargetanordnung according to claim 1, characterized in that the plug connection elements (44) are formed by Tannenbaumerweiterungen.
    [3]
    3. Röntgentargetanordnung (24) according to claim 1 or 2, characterized in that the center hub member (26) in the region of the locking slots (46) has a predetermined hub cross-sectional width (32), and the outer pane (28) in its interior and in its outer area depending a predetermined cross-sectional width (36 or 34), wherein the cross-sectional width (36) in the inner region is smaller than the hub cross-sectional width (32).
    [4]
    4. Röntgentargetanordnung (24) according to claim 1, characterized in that on a first radial side (60) of each partial peripheral disk part (54) a side tab (58) and on a second radial side (62) of each partial peripheral disk part (54) has a side slot (64 ) is trained; wherein the side flap (58) fits into an adjacent side slot (64) of each partial peripheral disk part (54). For this 2 sheets of drawings 4/6
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    同族专利:
    公开号 | 公开日
    DE102006037860B4|2018-10-11|
    US20070041504A1|2007-02-22|
    US7321653B2|2008-01-22|
    AT502350A3|2007-10-15|
    DE102006037860A1|2007-02-22|
    AT502350A2|2007-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2203645A1|1972-01-26|1973-08-02|Siemens Ag|ROTATING ANODE FOR ROSE TUBES|
    AT381413B|1979-07-18|1986-10-10|Philips Nv|METHOD FOR PRODUCING AN X-RAY TUBE ROTARY ANODE|
    DE3048476A1|1980-12-22|1982-07-22|Siemens AG, 1000 Berlin und 8000 München|X-RAY TUBE ROTATING ANODE|
    US3795832A|1972-02-28|1974-03-05|Machlett Lab Inc|Target for x-ray tubes|
    US3900751A|1974-04-08|1975-08-19|Machlett Lab Inc|Rotating anode x-ray tube|
    US4276493A|1979-09-10|1981-06-30|General Electric Company|Attachment means for a graphite x-ray tube target|
    US6947524B2|2003-05-02|2005-09-20|Ge Medical Systems Global Technology Company, Llc|Target bore strengthening method|
    US6925152B2|2003-05-13|2005-08-02|Ge Medical Systems Global Technology Co., Llc|Target attachment assembly|JP4777975B2|2004-04-06|2011-09-21|コーニンクレッカフィリップスエレクトロニクスエヌヴィ|Modular device for the detection and / or delivery of radiation|
    AT12794U1|2007-11-27|2012-11-15|Gen Electric|Assembly of an X-ray tube target and method for its production|
    US7583791B2|2005-08-16|2009-09-01|General Electric Co.|X-ray tube target assembly and method of manufacturing same|
    WO2010061324A1|2008-11-25|2010-06-03|Philips Intellectual Property & Standards Gmbh|X-ray anode|
    US8848875B2|2010-10-29|2014-09-30|General Electric Company|Enhanced barrier for liquid metal bearings|
    US8503615B2|2010-10-29|2013-08-06|General Electric Company|Active thermal control of X-ray tubes|
    US8744047B2|2010-10-29|2014-06-03|General Electric Company|X-ray tube thermal transfer method and system|
    GB2517671A|2013-03-15|2015-03-04|Nikon Metrology Nv|X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target and rotary vacuum seal|
    法律状态:
    2016-04-15| MM01| Lapse because of not paying annual fees|Effective date: 20150831 |
    优先权:
    申请号 | 申请日 | 专利标题
    US11/161,778|US7321653B2|2005-08-16|2005-08-16|X-ray target assembly for high speed anode operation|
    AT0134706A|AT502350A3|2005-08-16|2006-08-10|X-RAY TARGET ARRANGEMENT|
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