JP2013202294A - Top plate for x-ray diagnostic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a top plate for an X-ray diagnostic apparatus which has high bending stiffness and is excellent in X-ray transmissivity, and used in an X-ray imaging apparatus, CT scan, or the like.SOLUTION: In a top plate for an X-ray diagnostic apparatus which is made of FRP, and formed of an upper surface skin for mounting a subject in a lying state and a lower surface skin arranged facing the upper surface skin, the top plate for the X-ray diagnostic apparatus is composed of a see-through portion for radiating X-rays for diagnosing the subject in the longitudinal direction of the top plate, and a non-see-through portion where a reinforcing member to be fixed to a drive member is arranged, and a reinforcing portion is arranged at least at a part of the non-see-through portion, separate from the reinforcing member.

Description

  The present invention relates to a top plate for an X-ray diagnostic apparatus used for an X-ray imaging apparatus, a CT scanner or the like having high bending rigidity and excellent X-ray permeability.

  An X-ray imaging apparatus and an X-ray diagnostic apparatus top plate used for CT scanning have sufficient rigidity and strength to support the weight of a patient placed on the X-ray imaging apparatus and make a scanned image clear. For this reason, a structure constituted by a sandwich structure of a core made of a hard plastic excellent in X-ray permeability and a skin made of fiber reinforced plastic (FRP) is often used.

  The top plate is often used in a cantilever state in which the foot side is fixed to the main body because it is necessary to fix and image the patient at an arbitrary position in an X-ray imaging apparatus or CT scan. At this time, if the amount of deflection of the top plate is large, the scan position is displaced and accurate image information cannot be obtained. Therefore, in order to obtain sufficient rigidity of the top plate, studies have been made on materials used and increases in core and FRP layer thickness. However, such an increase in thickness leads to not only an increase in cost but also a decrease in X-ray transmission. Therefore, it is not possible to simply increase the thickness, but to design the core and skin thickness and material arrangement more optimally. It has been demanded.

  In response to such a demand, in Patent Document 1, when a bending moment is applied, the top skin is formed of carbon fiber reinforced plastic (CFRP) having a high tensile strength when the top plate is on the convex side (tensile side). It has been proposed that the lower surface skin (compressed side) is made of CFRP having a high compressive strength. Further, in Patent Document 2, when a bending moment is applied to a skin layer composed of a plurality of FRP layers, the top skin layer on the tension side is positioned next to the FRP layer on the material of the FRP layer located on the most core side. A material with higher compressive strength than the FRP layer to be placed is placed, and conversely, in the lower skin layer on the compression side, the material of the FRP layer located closest to the core has a tensile strength higher than the FRP layer located next to the FRP layer. It has been proposed to arrange a large material. In Patent Document 3, it is proposed to design the elastic modulus in the longitudinal direction and the width direction of the top plate in the upper surface skin and the lower surface skin so as to have an appropriate ratio. Further, Patent Document 4 proposes that a sheet-like resin is sandwiched between layers of the FRP layer instead of increasing the FRP layer on the lower surface of the top plate.

  However, in the top plate having such a configuration, the thickness of the X-ray transmission range is increased in order to obtain a desired rigidity, so that the problem of reduction in X-ray transmission and an increase in material cost has not been solved. In recent years, the top plate for X-ray diagnostic equipment has been made longer for diagnosing a wide range with a single scan to reduce the burden on the patient, and with higher rigidity and strength for improving the shooting accuracy. In addition, excellent X-ray permeability is required to reduce the amount of X-ray exposure. It has been important to design a top board that satisfies these requirements at a lower cost.

Japanese Utility Model Publication No. 5-62208 Japanese Patent No. 4178964 JP 2007-20986 A JP 2008-247 A

  The present invention has been made in view of the above-mentioned problems described above, and provides a top plate for an X-ray diagnostic apparatus having excellent bending rigidity at a lower cost without reducing X-ray permeability. is there.

  In order to achieve the above object, according to the present invention, there is provided a top plate for an X-ray diagnostic apparatus made of FRP comprising an upper surface skin on which a subject in a lying state is placed, and a lower surface skin arranged to face the upper surface skin. It comprises a fluoroscopic part for irradiating radiation for diagnosis of a subject in the longitudinal direction and a non-transparent part in which a reinforcing member for fixing to a driving member is inserted at least in part, and the non-fluoroscopic part separately from the reinforcing member An X-ray diagnostic apparatus top plate is provided in which a reinforcing part is provided in a part of the part.

  Further, the reinforcing portion can be disposed on a part of at least one of the upper surface skin and the lower surface skin in the non-perspective portion. Further, the reinforcing portion can be arranged so as to connect the lower skin and the upper skin in the non-perspective portion.

  The reinforcing portion preferably has a non-constant thickness portion in at least one of the width direction and the longitudinal direction of the top plate for an X-ray diagnostic apparatus.

  In addition, it is preferable that the reinforcing portion is disposed so as to include the tip position of the reinforcing member.

  Furthermore, it is preferable that the reinforcing portion includes at least one CFRP layer.

  Moreover, it is preferable that the said reinforcement part joins the said CFRP shape | molded by another process to the said non-transparent part. Furthermore, it is preferable that the reinforcing portion includes at least one metal layer.

  Preferably, the upper skin and the lower skin are connected at both ends in each width direction, and any one of the reinforcing portions is disposed on the top plate for an X-ray diagnostic apparatus in which the see-through portion has a hollow structure.

  In the present invention, in a top plate for an FRP X-ray diagnostic apparatus comprising an upper skin on which a subject lying down is placed and a lower skin facing the upper skin, for diagnosis of the subject in the longitudinal direction of the top plate And a non-transparent portion into which a reinforcing member for fixing to the drive member is inserted, and a reinforcing portion is provided at least in part of the non-perspective portion separately from the reinforcing member. Thus, the bending rigidity can be improved at a low cost without reducing the X-ray transparency of the fluoroscopic part.

It is the schematic which shows the example of 1 operation | movement of the top plate in this invention. It is a perspective view which shows one Embodiment of the top plate in this invention. It is sectional drawing of the longitudinal direction in alignment with the a-a 'line of FIG. 2 of the top plate in this invention. It is a cross-sectional shape orthogonal to the longitudinal direction of the top plate in this invention, (a) is sectional drawing which follows the bb 'line of FIG. 2, (b) is another structure which follows the bb' line of FIG. It is sectional drawing shown. It is a cross-sectional shape orthogonal to the width direction of the top plate in this invention, (a) is sectional drawing which follows the cc 'line of FIG. 2, (b) is another structure which follows the cc' line of FIG. FIG. It is sectional drawing of the longitudinal direction which shows the structure of the reinforcement part of the top plate in this invention. It is sectional drawing of the longitudinal direction which shows another structure of FIG. 6 of the reinforcement part of the top plate in this invention. It is sectional drawing orthogonal to the longitudinal direction which shows another structure of FIG. 6, 7 of the reinforcement part of the top plate in this invention. It is sectional drawing orthogonal to the longitudinal direction which shows another structure of FIGS. 6-8 of the reinforcement part of the top plate in this invention. It is sectional drawing orthogonal to the longitudinal direction which shows another structure of FIGS. 6-9 of the reinforcement part of the top plate in this invention. It is reaction force distribution of the support position by the support member of the top plate in this invention. It is sectional drawing orthogonal to the longitudinal direction which shows another structure of FIGS. 6-10 of the reinforcement part of the top plate in this invention. It is the schematic side view which showed the conditions of rigidity evaluation in the Example of this invention. It is sectional drawing of the longitudinal direction which shows the structure of the reinforcement part which concerns on the embodiment of this invention. It is sectional drawing of the longitudinal direction which shows another structure of FIG. 14 of the reinforcement part which concerns on the embodiment of this invention. It is sectional drawing orthogonal to the longitudinal direction which shows another structure of FIG. 14, 15 of the reinforcement part which concerns on the embodiment of this invention.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a schematic diagram showing an example of the operation of the top plate according to the present invention, FIG. 2 is a perspective view of the top plate according to an embodiment of the present invention, and FIG. 3 is a top view along the line aa ′ in FIG. It is sectional drawing of a longitudinal direction. As shown in FIG. 1, the top board 1 is placed in a cantilever state in which an end portion is fixed to a moving member 11 of a driving unit 10 of an X-ray diagnostic apparatus by a bolt or the like, and a subject 20 lying on the upper surface is placed on the upper surface side. The top plate 1 is used by reciprocating in the longitudinal direction. For this reason, a bending moment acts on the top plate 1, and the top plate bends downward. In order to reduce the downward deflection and stabilize the reciprocating motion in the longitudinal direction, the lower surface side of the top plate 1 is often supported by the support member 12. In general, a metal or resin roll is used for the support member 12.

  In addition, the top plate 1 occupies about 50 to 80% of the total length of the top plate, and a range fixed to the fluoroscopic part 1a for irradiating X-rays to diagnose the subject 20 and the moving member 11 of the driving unit 10 It can be divided into two regions of the non-transparent part 1b. Although the magnitude | size of the top plate 1 is based also on a use etc., 2000 mm or more in a height direction, 200 mm-500 mm in the width direction, and about 30 mm-70 mm in thickness are generally used.

  As shown in FIG. 3, the top plate 1 often has a sandwich structure including a core 60 and an upper skin 30 and a lower skin 40 that are attached so as to surround the core 60. Further, a reinforcing member 50 is disposed in the non-transparent portion 1b, and the bending rigidity of the top plate 1 is increased while ensuring the strength against the bolt fastening force for fixing to the driving member 10. The shape of the reinforcing member 50 can be freely designed within the range of the non-transparent portion 1b, and is determined by the required specifications, the rigidity and weight of the top plate, the mounting range of the base, and the like. In addition, the tip of the reinforcing member 50 is often used in an obliquely cut shape in order to relieve stress concentration due to a sudden change in rigidity at that position.

  4A and 4B are cross-sectional views orthogonal to the longitudinal direction of the top plate. 4A is a cross section taken along line bb ′ of the top plate 1 shown in FIG. 2, and shows a cross section of the see-through portion 1a. FIG. 4B is a cross section of the top plate 1 shown in FIG. It is a cross section along c ', and shows a cross section of the non-perspective portion 1b. The cross section of the top plate has a crescent shape or a shape based on a rectangle or a trapezoid. However, in order to keep the subject's posture in a stable state, the top skin 30 has a concave curved surface as shown in FIGS. It is preferable that Further, the cross section of the reinforcing member 50 inserted into the non-transparent portion 1b may be the same shape as the cross section of the top plate, but usually from the viewpoint of weight reduction and material cost, as shown in FIG. Meat is often cut out.

  5 (a) and 5 (b) show the lower skin 40 shown in FIGS. 4 (a) and 4 (b) divided into a lower skin bottom surface 40a and lower skin side surfaces 40b and 40c. The bottom skin bottom surface 40a and the bottom skin side surfaces 40b and 40c may have different configurations. However, when the connecting portion is completely discontinuous, the strength of the connecting portion may be significantly reduced. Therefore, it is preferable that at least one layer of the bottom skin bottom surface 40a and the bottom skin side surfaces 40b and 40c is continuous.

  The top plate 1 as described above, for example, wraps reinforcing fibers around the core, heats and pressurizes to integrally form the core and the skin, or arranges prepregs of reinforcing fibers on the upper and lower surfaces of the core, and also integrally forms the same. You can do it. Alternatively, a separately formed skin and core may be bonded together.

  For the core 60, plastic foams such as polyurethane foam, polystyrene foam, polyvinyl chloride foam, acrylic foam, polymethacrylimide foam, cellulose acetate foam, epoxy foam, and phenol foam can be used. These plastic foams preferably have as low a density as possible within a range satisfying the required values of high rigidity and high strength in order to ensure X-ray transparency, and in particular, low cost and uniform physical properties can be secured. Acrylic foam is preferably used.

  The skins 30 and 40 preferably include an FRP layer, and the thickness is usually about 1 to 8 mm, although it depends on the application, the size of the top plate, the type, characteristics, and form of the reinforcing fibers used. The surface of the skin may be painted or the matrix resin itself forming the FRP layer may be the surface.

  The FRP layer that constitutes the skins 30 and 40 includes reinforcing fibers and a matrix resin. As the reinforcing fiber, at least one of carbon fiber (including graphite fiber), aramid fiber, high-strength polyethylene fiber, glass fiber, boron fiber, and the like can be used, but a fiber having high strength and high elasticity can be obtained. Moreover, it is preferable to use carbon fibers that are excellent in X-ray permeability. These reinforcing fibers are used in the form of woven fabrics such as plain weave, satin weave, twill weave and weave, and strands.

  As matrix resin, thermosetting resin such as epoxy resin, unsaturated polyester resin, vinyl ester resin, phenol resin, polyimide resin, and thermoplastic resin such as ABS resin, nylon resin, polyether ether ketone resin, polyolefin resin, etc. Can be used. Among these, it is preferable to use an epoxy resin or a vinyl ester resin in view of the adhesiveness and moldability with the carbon fiber.

  The reinforcing member 50 is preferably one that can withstand a bolt fastening force for fixing to the driving member 10 and can improve the bending rigidity. A metal such as an aluminum alloy or stainless steel, a fiber reinforced resin, or the like can be used.

  6 and 7 are cross-sectional views along the longitudinal direction of the top plate 1 and show an embodiment of the present invention. The top plate 1 is required to have high-accuracy and safe imaging over a wide range as the radiation equipment becomes more functional, and higher bending rigidity and improved X-ray permeability are required. When a bending moment is applied to the top plate 1, stress increases at a position away from the neutral surface, and tensile deformation occurs on the upper surface skin 30 on the convex side, and compressive deformation occurs on the bottom surface of the lower surface skin 40 on the concave side. Occur. Further, when the top plate 1 is used in a cantilever state, stress concentration occurs due to a sudden change in rigidity at the reinforcing member tip positions 50 a and 50 b, and a large tensile force is generated at the reinforcing member tip position 50 a in the upper surface skin 30. A large compressive stress is generated at the reinforcing member tip position 50b in the lower skin 40. Furthermore, a large compressive stress is generated at the contact point between the lower skin 40 and the support member 12 that is the support position of the top plate 1, or at the tip position of the moving member 11 that fixes the top plate 1 when the support member 12 does not support it. . The location where these local stress concentrations occur is within the range of the non-transparent portion 1b of the top board 1, and has a great influence on the bending rigidity of the top board 1. Therefore, as shown in FIG. 6, in the non-transparent portion 1 b of the top plate 1, the reinforcing portion 100 is disposed around the reinforcing member 50 and the core 60 so as to be in contact with the position away from the neutral surface, that is, the upper surface skin 30 and the lower surface skin 40. By arranging, the bending rigidity of the top plate can be improved. In the present invention, since it is not necessary to increase the thickness of the fluoroscopic part 1a, the rigidity can be effectively improved at a low cost without reducing the X-ray transparency. Further, since the reinforcing member tip positions 50a and 50b are particularly stress-concentrated due to a sudden change in rigidity, the reinforcing portion 100 includes the reinforcing member tip positions 50a and 50b in order to mitigate this change in rigidity. It is preferable that they are arranged so as to protrude to the free end side within the range of the non-transparent part 1b. By arranging in this way, a sudden change in rigidity can be mitigated, and the strength can be improved in addition to the rigidity.

  FIG. 7 shows another embodiment of the present invention shown in FIG. 6, which is partially arranged so as to include the reinforcing member tip positions 50a and 50b, not the entire area of the non-transparent portion 1b as shown in FIG. is there. When there is support by the support member 12, this support position becomes the starting point of bending deformation, and the compressive stress is reduced at the tip position of the moving member 11. Therefore, the effect can be expected without reinforcing all the non-reinforcing portions 1 b. In the form shown in FIG. 7, since the reinforcement part 100 is arrange | positioned in a part of non-permeability part 1b, material cost can be restrained compared with the case where it provides in the whole region of the non-permeability part 1b. The reinforcing part 100 can be freely arranged within the range of the non-transparent part 1b.

  FIGS. 8-11 is sectional drawing orthogonal to a longitudinal direction in the area | region containing the reinforcement part 100 of the non-perspective part 1b of the top plate 1, and has shown another embodiment of this invention shown to FIG. . FIG. 8 shows a case where the reinforcing portion 100 is partially arranged so that the bottom skin 40 includes not the entire width direction of the top plate 1 but the end of the bottom surface. FIG. 12 shows a reaction force distribution acting on the lower skin 40 of the top plate 1 from the support member 12. When a load is applied to the upper surface, the load is transmitted from the side surface of the lower surface skin 40, and a large reaction force acts locally at the end of the support member 12. When a bending moment is applied, the bottom end portion of the lower skin 40 is strongly pressed against the support member 12, and a large compressive stress is generated compared to the center. Therefore, as shown in FIG. 8, in the lower surface skin 40, it is preferable to dispose the reinforcing portion 100 so as to include the bottom surface end in that the stress generated at the bottom surface end can be suppressed. Further, when the top plate 1 repeatedly moves back and forth, compression failure often occurs starting from the bottom end of the lower skin 40, which is preferable in terms of strength as well as rigidity. Furthermore, as shown in FIG. 9, it is preferable to dispose the reinforcing portion 100 over the entire bottom surface of the lower skin 40 and to make the end portion thickness of the reinforcing portion 100 larger than the central thickness in order to increase rigidity and strength.

  FIG. 10 shows a case where the reinforcing portion 100 is partially disposed on the top skin 30 instead of the entire width direction of the top plate 1. In the upper surface skin 30, when a bending moment acts on the cross-sectional shape as shown in FIG. 10, a large tensile stress is generated at the end portion farthest from the neutral surface. This tensile deformation has a great influence on the bending rigidity of the top plate 1. Therefore, it is preferable to arrange the reinforcing portion 100 so as to include the end portion of the upper surface skin 30. As shown in FIG. 9, when the reinforcing member 50 is thinned, a large shear stress is generated at the boundary 52 between the reinforcing member 50 and the core 60 of the upper surface skin 30 due to a difference in rigidity between the reinforcing member 50 and the core 60. Occur. Since this shear deformation also has an influence on the bending rigidity of the top plate 1, it is preferable to arrange the reinforcing portion 100 so as to include the boundary 52 between the reinforcing member 50 and the core 60 to suppress the shear deformation.

  In addition, as shown in FIG. 11, the reinforcing portion 100 can be arranged so as to connect the upper skin 30 and the lower skin 40 of the top plate 1. Such a configuration is preferable in that the tensile deformation of the end of the upper skin 30 and the end of the lower skin 40 of the top plate 1 can be suppressed at the same time.

  By arranging the reinforcing portion 100 in a part of the width direction of each skin as shown in FIGS. 8 to 11, the material cost can be suppressed and the rigidity can be improved more effectively. Moreover, about FIGS. 8-11, it is also possible to combine these forms and arrange | position to a part of the longitudinal direction in the non-permeability | transparent part 1b, and the design with a high freedom | flexibility according to the structure of the top plate 1 and a required specification I can do it. Further, the thickness of the reinforcing portion 100 need not be constant not only in the width direction of the top plate 1 but also in the longitudinal direction.

  The reinforcing portion 100 preferably includes FRP. The FRP included in the reinforcing portion 100 is configured by a woven fabric base material such as plain weave, satin weave, twill weave, and weave, and a prepreg sheet in which fibers are aligned in one direction. This FRP is preferably higher in rigidity than the reinforcing member 50 when the reinforcing portion 100 is arranged in a certain range of the reinforcing member 50, and is a CFRP because it can be obtained with a small number of layers and high rigidity and high strength. Is preferred. Furthermore, it is possible to include metal in at least a part of the reinforcing portion 100. Since the reinforced portion 100 is highly rigid, there is a high possibility that the number of stacked sheets of the entire top plate 1 can be reduced depending on the required specifications of the top plate 1, which can lead to an improvement in X-ray transmission and a reduction in material costs. Can do.

  Further, if the reinforcing portion 100 is arranged without changing the shape of the reinforcing member 50 or the core 60, a step is formed, and the top plate 1 cannot be smoothly moved, and the design property is deteriorated. . In order to eliminate such a step, it is preferable that the core 60 and the reinforcing member 50 in a range in which the reinforcing portion 100 is disposed are cut in advance by the thickness of the reinforcing portion 100. The reinforcing portion 100 is disposed in a state where the resin is not cured, and is integrally formed by heating and curing, or an FRP cured plate or a metal plate previously formed in a separate process is disposed, and is integrally formed in the same manner. Etc. are possible.

  Moreover, the reinforcement part 100 in this invention is applicable also about the top plate in which the see-through | perspective part 1a becomes a hollow structure. It is preferable in terms of X-ray transparency that the see-through portion 1a has a hollow structure.

  The effect of the present invention was confirmed using a finite element method. 13 to 16 show schematic views of the embodiment. In addition, this invention is not restrict | limited at all by these Examples.

  The total length of the top plate 2 shown in FIGS. 13 to 16 is 2700 mm, the width is 400 mm, and the thickness is 40 mm. The see-through portion 2a is in the range of 1700 mm in the longitudinal direction from the free end of the top plate 2, and the remaining range is the non-see-through portion. 2b. The reinforcing member 51 inserted into the top plate 2 was disposed in a range of 800 mm from the base side of the top plate.

  The upper surface skin 31 and the lower surface skin 41 were made of satin weave cloth having a 0 ° direction elastic modulus of 90 GPa, a 90 ° direction elastic modulus of 24 GPa, and a thickness of 0.65 mm, with the top plate longitudinal direction being 0 °. The reinforcing member 51 was an aluminum alloy having an elastic modulus of 69.0 GPa. The reinforcing part 101 was composed of satin weave cloth having a 0 degree direction elastic modulus of 152 GPa, a 90 degree direction elastic modulus of 26 GPa, and a thickness of 0.65 mm.

  In FIG. 13, the load restraint conditions of the rigidity evaluation of the top plate 2 are shown. In the rigidity evaluation, the range fixed to the moving member 14 and the support position by the support member 21 are fixed, and a load of 2.2 KN is applied to the range of 1900 mm from the tip of the top plate 2 to deflect the tip of the top plate 2. The amount and CFRP weight were examined.

(1) Example 1
As shown in FIG. 14, the rigidity analysis was performed for the case where the reinforcing portion 101 was disposed over the entire non-transparent portion 2 b of the top plate 2. In the laminated structure, the upper skin 31 and the lower skin 41 have the same structure and five layers, and the reinforcing portion has two layers.

(2) Example 2
As shown in FIG. 15, the rigidity analysis was performed for the case where the reinforcing portion 101 was arranged in a part in the longitudinal direction of the non-perspective portion. Stiffness analysis is performed for the case where the reinforcing portion 101 is placed on the upper surface skin 31 and the lower surface skin 41 with the reinforcing range of 100 mm from the reinforcing material tip position 51 (a) of the lower surface skin 41 to the free end side and 400 mm to the base side. did. The laminated structure was the same as in Example 1.

(3) Example 3
Rigidity analysis was performed for the case where the reinforcing portion 101 was disposed in a part of the top skin 2 and the bottom skin 41 in the width direction of the top plate 2. As shown in FIG. 16, the reinforcing range was 100 mm from both ends of the upper surface skin 31 and was arranged on the bottom surface of the lower surface skin 41. The longitudinal reinforcing range was the same as in Example 2. In the laminated structure, the skin was the same as in Example 1 or 2, and the reinforcing part was four layers.

(4) Example 4
The same reinforcing portion 101 as in Example 3 was arranged, and the rigidity analysis was performed for the case where the number of stacked upper surface skin 41 and lower surface skin 31 was reduced by one from Examples 1 to 3.

(5) Comparative Example 1
In the examples shown in FIGS. 13 to 16, the rigidity analysis was performed when the reinforcing portion 101 was not provided. In the laminated structure, the upper skin 31 and the lower skin 41 have the same structure and five layers.

(6) Comparative Example 2
Rigidity analysis was performed for the case where the number of laminated upper skin 31 and lower skin 41 was increased by one.

  The results of Examples 1 to 4 and Comparative Examples 1 and 2 are shown in Table 1.

  As described above, compared to Comparative Example 1, the CFRP weight is smaller than that of Comparative Example 2 which is a means for improving the conventional rigidity, and in Example 4, the bending rigidity is improved even if the number of laminated layers is reduced. It was. From the above, it was confirmed that the bending rigidity can be improved without lowering the X-ray permeability by using the present invention.

1, 2: Top plate 1a, 2a: see-through part 1b, 2b: non-see-through part 10, 13: driving part 11, 14: moving member 12, 15: support member 20: subject 30, 31: upper surface skin 41, 41: bottom skin 50, 51: reinforcing member 50a, 51a: reinforcing member tip position 50b in the upper skin, 51b: reinforcing member tip position in the bottom skin 52: reinforcement member-core boundary 60 in the upper skin, 61: core 100, 101: Reinforcement part

Claims (9)

  A top plate for an FRP X-ray diagnostic apparatus comprising an upper surface skin on which a subject lying on the recumbent is placed and a lower surface skin disposed facing the upper surface skin, for diagnosis of the subject in the longitudinal direction of the top plate It comprises a fluoroscopic part for irradiating X-rays and a non-fluoroscopic part in which a reinforcing member for fixing to a driving member is arranged, and a reinforcing part is provided on at least a part of the non-fluoroscopic part separately from the reinforcing member. A top plate for an X-ray diagnostic apparatus.   The top plate for an X-ray diagnostic apparatus according to claim 1, wherein the reinforcing portion is disposed on a part of at least one of the upper skin and the lower skin in the non-perspective portion.   The top plate for an X-ray diagnostic apparatus according to claim 1, wherein the reinforcing portion is disposed so as to connect an upper skin and a lower skin in the non-perspective portion.   The thickness of the said reinforcement part has a non-constant thickness part in at least any one direction of the width direction or longitudinal direction of the top plate for X-ray diagnostic apparatuses, The X in any one of Claims 1-3 characterized by the above-mentioned. Top plate for line diagnostic equipment.   The top plate for an X-ray diagnostic apparatus according to any one of claims 1 to 4, wherein the reinforcing portion is disposed so as to include a tip portion of the reinforcing member.   The top plate for an X-ray diagnostic apparatus according to claim 1, wherein the reinforcing portion includes at least one FRP layer.   The top plate for an X-ray diagnostic apparatus according to claim 6, wherein the reinforcing portion is formed by joining FRP molded in a separate process to the non-transparent portion.   The top plate for an X-ray diagnostic apparatus according to claim 1, wherein at least a part of the reinforcing portion includes a metal.   The top plate for an X-ray diagnostic apparatus according to any one of claims 1 to 8, wherein the upper skin and the lower skin are connected at both ends in each width direction, and at least the see-through portion has a hollow structure.

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