CN209916034U - Beam light ware's blade subassembly and beam light ware - Google Patents

Abstract

A blade assembly of a beam bunching device comprises a bracket (10), a first rotating arm (21), a second rotating arm (22), a first blade (31) and a track disc (40). The first swivel arm is rotatably connected to the bracket about a first axis (R1). The second rotatable arm is rotatably connected to the bracket about a second axis (R2). The first blade is rotatably connected with the first rotating arm and the second rotating arm. The support, the first rotating arm, the second rotating arm and the first blade form a parallel double-crank mechanism. The track is rotatably connected to the support about a third axis (R3) parallel to the first axis. The orbital disk has a first track (41) extending along a plane perpendicular to the third axis, the first blade being movably coupled to the orbital disk by the first track. The first track is arranged at a gradual distance from the third axis. The blade assembly of the light bundling device is simple in structure and beneficial to saving space. In addition, a beam splitter comprising the blade assembly is also provided.

Description

Beam light ware's blade subassembly and beam light ware

Technical Field

The utility model relates to a beam light ware's blade subassembly, especially a simple structure and save space's blade subassembly and beam light ware including this blade subassembly.

Background

The beam light of the radioactive diagnosis device is used for adjusting the radiation field size of the rays emitted by the radioactive source. The beam splitter adjusts the size of a beam port through the movement of the blades so as to realize the required field. The control structure of the blade of the existing beam splitter is complex, the occupied space is large, and the beam splitter is large and heavy in appearance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vane subassembly of a beam of light ware, its simple structure just saves space.

Another object of the present invention is to provide a beam splitter which saves space.

The utility model provides a vane subassembly of beam light ware, it includes a support, a first rocking arm, a second rocking arm, a first blade and a orbit dish. The first rotating arm is rotatably connected with the bracket around a first axis. The second rotating arm is rotatably connected with the bracket around a second axis. The first blade is rotatably connected with the first rotating arm and the second rotating arm. The support, the first rotating arm, the second rotating arm and the first blade form a parallel double-crank mechanism. The track is rotatably connected to the support about a third axis parallel to the first axis. The first blade is movably connected to the first track via the first track. The first track is arranged to gradually change the distance from the third axis so as to drive the first blade to move through the rotation of the track disc.

In the blade assembly of the beam splitter, the bracket, the first rotating arm, the second rotating arm and the first blade form a parallel double-crank mechanism, and the motion mode of the first blade is limited to move along an arc-shaped track, and only the first blade moves in parallel without tilting or rotating. The first blade can be driven to move by rotating the track disc, so that the first blade can generate displacement in an adjusting direction perpendicular to the first axis. The blade assembly of the light bundling device is simple in structure and beneficial to saving space.

In another exemplary embodiment of the blade assembly of the beam splitter, the blade assembly further includes a second blade. The second blade is rotatably connected with the first rotating arm and the second rotating arm. The support, the first rotating arm, the second rotating arm and the second vane form a parallel double-crank mechanism. The first blade and the second blade are coplanar with the first axis relative to the two rotation axes of the first rotating arm, so that the first blade and the second blade are driven to approach or depart from each other in an adjusting direction through the rotation of the track disc. The structure can realize linkage control of the first blade and the second blade, and is favorable for saving space.

In yet another exemplary embodiment of the blade assembly of the beam splitter, the tracking disk further includes a second track extending along a plane perpendicular to the third axis. The second blade is movably connected to the trackpad by a second track. The second track and the first track are symmetrical relative to the third axis. This configuration facilitates improving the uniformity of movement of the first and second blades.

In yet another exemplary embodiment of the blade assembly of the beam splitter, the first rail is provided as a slide hole, and the first blade has a first guide portion penetrating the first rail and having a cylindrical shape; and/or the second track is provided with a sliding hole, and the second blade is provided with a cylindrical second guide part penetrating through the second track. The structure is simple, processing is facilitated, and space is saved.

In yet another exemplary embodiment of the blade assembly of the beam splitter, the third axis is coplanar with and equidistant from the first axis and the second axis. Thereby facilitating coordinated control of the first and second blades.

In yet another exemplary embodiment of the blade assembly of the beam splitter, the blade assembly is provided with at least one polarization wheel rotatably connected to the bracket with an axis of rotation parallel to the first axis. The circumferential surface of the guide wheel is recessed to form a circumferentially surrounding groove. The track disk has an outer edge portion with a circular outer contour. The track disc abuts against the groove bottom wall of the groove of the guide wheel through the outer edge part to define the rotation axis of the track disc. The height of the blade assembly in a direction parallel to the first axis is facilitated to be reduced by providing a guide wheel.

In yet another exemplary embodiment of the blade assembly of the beam expander, the at least one polarization wheel is adjustable in its position relative to the bracket in a direction perpendicular to the first axis. Therefore, the position of the third axis can be finely adjusted conveniently, and the flexibility of the product is improved.

In a further exemplary embodiment of the blade assembly of the beam splitter, the track disk has a toothing at least in sections at its circumferential edge. The blade assembly also includes a drive gear and a motor capable of driving the drive gear to rotate. The driving gear is meshed with the track disc through the tooth-shaped structure so as to drive the track disc to rotate. The structure is simple, and space saving is facilitated.

The utility model also provides a beam light ware, it includes an foretell blade subassembly. In the blade assembly of the beam splitter, the bracket, the first rotating arm, the second rotating arm and the first blade form a parallel double-crank mechanism, and the motion mode of the first blade is limited to move along an arc-shaped track, and only the first blade moves in parallel without tilting or rotating. The first blade can be driven to move by rotating the track disc, so that the first blade can generate displacement in an adjusting direction perpendicular to the first axis. The blade assembly of the light bundling device is simple in structure and beneficial to saving space.

In another exemplary embodiment of a beam splitter, the beam splitter is provided with two blade assemblies. Each blade assembly further comprises a second blade, and the rotation of the track disc can drive the first blades to move close to or away from each other relative to the second blades in an adjusting direction. The adjustment directions of the two blade assemblies are perpendicular to each other. The two first blades and the two second blades form a window, and the size of the window is changed along with the rotation of the two track discs. The structure realizes the field control in four directions.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

FIG. 1 is a schematic diagram of one illustrative embodiment of a blade assembly of a beam splitter.

Fig. 2 and 3 are partial structural schematic views of the blade assembly shown in fig. 1.

Fig. 4 is a schematic structural view for illustrating another use state of the blade assembly shown in fig. 1.

FIG. 5 is a schematic diagram of another exemplary embodiment of a blade assembly of a beam splitter.

Fig. 6 is a structural view for illustrating another use state of the blade assembly shown in fig. 5.

Fig. 7 is a schematic configuration diagram for explaining an exemplary embodiment of the beam splitter.

Fig. 8 is a schematic configuration diagram for explaining another use state of the beam splitter shown in fig. 7.

Description of the reference symbols

100 blade assembly

10 support

21 first rotating arm

22 second swivel arm

31 first blade

311 first guide part

32 second blade

321 second guide part

40 track disc

41 first track

42 second track

43 outer edge part

50 leading wheel

60 drive gear

300 window

R1 first axis

R2 second axis

R3 third axis

T1, T2 regulating Direction

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

In this document, "first", "second", etc. do not mean their importance or order, etc., but merely mean that they are distinguished from each other so as to facilitate the description of the document.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product.

FIG. 1 is a schematic diagram of one illustrative embodiment of a blade assembly of a beam splitter. As shown in fig. 1, the blade assembly 100 of the beam splitter includes a bracket 10, a first rotating arm 21, a second rotating arm 22, a first blade 31 and a track disk 40. Fig. 2 and 3 are partial structural views of the blade assembly shown in fig. 1, wherein fig. 2 shows the bracket 10, the first pivot arm 21, the second pivot arm 22 and the first blade 31, and fig. 3 shows the track disk 40. The first blade 31, also called a shielding plate, is made of a material that can block X-rays, such as lead.

The first pivot arm 21 is pivotally connected to the bracket 10 about a first axis R1. The second pivot arm 22 is pivotally connected to the bracket 10 about a second axis R2. In fig. 1 and 2, the first axis R1 and the second axis R2 are both perpendicular to the page. The first blade 31 rotatably connects the first pivot arm 21 and the second pivot arm 22. The bracket 10, the first rotating arm 21, the second rotating arm 22 and the first blade 31 form a parallel double-crank mechanism. Thereby, the moving trace of the first blade 31 with respect to the bracket 10 is defined as an arc shape, and only moves in parallel without tilting or rotating.

The track disk 40 is rotatably connected to the carriage 10 about a third axis R3 parallel to the first axis R1. In the present exemplary embodiment, the blade assembly is provided with three fairleads 50, which are rotatably connected to the bracket 10 with an axis of rotation parallel to this first axis R1. Each of the guide wheels 50 is recessed in a circumferential surface thereof to form a circumferentially circumferential groove. The tracking disc 40 has an outer rim portion 43 with a circular outer contour. The three guide wheels 50 are uniformly distributed along the circumferential direction of the outer edge portion 43. The track disk 40 abuts the groove bottom wall of the groove of each of the guide wheels 50 by the outer edge portion 43 to define the rotation axis of the track disk 40, i.e., the third axis R3. The reduction in height of the blade assembly in a direction parallel to the first axis R1 is facilitated by the provision of the inducer 50. Without limitation, in other exemplary embodiments, the number and position of the aligning wheels 50 may be set according to the need, for example, a single aligning wheel 50, two aligning wheels 50, four aligning wheels or more may be provided in number, and these aligning wheels 50 may be arranged in a non-uniform distribution, and the track plate 40 may be rotatably connected to the frame 10 in other manners. In the exemplary embodiment, the rotation axis of the track disk 40 is defined by three polarization wheels 50, but is not limited thereto, and in other exemplary embodiments, the polarization wheels 50 may cooperate with other structures to define the rotation axis of the track disk 40.

Referring to fig. 1 and 3, the track disk 40 has a first track 41 extending along a plane perpendicular to the third axis R3. The first blade 31 is movably connected to the track disk 40 via a first rail 41, i.e., the first blade 31 is movable relative to the track disk 40 along the first rail 41. The first rail 41 is disposed at a gradually changing distance from the third axis R3 to move the first blade 31 by the rotation of the track disk 40. In the present exemplary embodiment, the first rail 41 is disposed at a gradually increasing distance from the third axis R3, but is not limited thereto, and in other exemplary embodiments, the distance may be disposed at a gradually decreasing distance or at any combination of gradually increasing and gradually decreasing distances as needed. In the present exemplary embodiment, the first rail 41 is curved, but is not limited thereto, and in other exemplary embodiments, it may be linear as needed.

In the present exemplary embodiment, the first rail 41 is configured as a sliding hole, and the first blade 31 has a first guide portion 311 which is cylindrical and is inserted into the first rail 41, which is simple in structure, easy to process, and space-saving. Without limitation, in other exemplary embodiments, the first blade 31 and the trackpad 40 may be movably connected in other ways.

In the blade assembly of the beam splitter, the bracket 10, the first rotating arm 21, the second rotating arm 22 and the first blade 31 form a parallel double-crank mechanism, and the motion mode of the first blade 31 is limited to move along an arc-shaped track, and only moves in parallel without tilting or rotating. The first vane 31 is moved by rotating the track disc 40, whereby the first vane 31 is displaced in an adjustment direction T1 perpendicular to the first axis R1. fig. 4 shows the track disc 40 rotated clockwise, and the first vane 31 is moved downward in the adjustment direction T1. The blade assembly of the light bundling device is simple in structure and beneficial to saving space. The first vane 31 is used to block X-rays to control the size and shape of the field of the radiation source. For example, for an X-ray medical device, the blade assembly can adjust the size and shape of an X-ray area to be irradiated to a subject.

As shown in fig. 1 and 2, in the illustrated embodiment, the blade assembly further includes a second blade 32. The second blade 32, also called a shielding plate, is made of a material that can block X-rays, such as lead. The second blade 32 rotatably connects the first and second rotation arms 21 and 22. The bracket 10, the first rotating arm 21, the second rotating arm 22 and the second blade 32 form a parallel double-crank mechanism. Thereby, the motion trace of the second blade 32 with respect to the bracket 10 is defined as an arc shape, and only moves in parallel without tilting or rotating. The two axes of rotation of the first blade 31 and the second blade 32 with respect to the first rotating arm 21 are coplanar with the first axis R1 and are spaced on either side of the first axis R1, so that the directions of movement of the first blade 31 and the second blade 32 in the adjustment direction T1 are opposite. Therefore, the rotation of the track disc 40 can drive the first blade 31 and the second blade 32 to approach or separate from each other in the adjusting direction T1, so as to realize field control in two directions, i.e. up and down in the figure. This structure can realize the coordinated control of first blade 31 and second blade 32, does benefit to saving space.

FIG. 5 is a schematic diagram of another exemplary embodiment of a blade assembly of a beam splitter. The same or similar parts of the blade assembly of the exemplary embodiment as those shown in fig. 1 are not repeated herein, except that: the track disk 40 also has a second track 42 extending along a plane perpendicular to the third axis R3. Second blade 32 is movably coupled to trackpad 40 by a second track 42, i.e., second blade 32 is movable relative to trackpad 40 along second track 42. The second rail 42 is centrosymmetric to the first rail 41 with respect to the third axis R3. Thereby, the first blade 31 and the second blade 32 can be synchronously driven to move by rotating the track disk 40. Fig. 6 shows a state after the track disk 40 is rotated clockwise, the first blade 31 is moved downward in the adjusting direction T1, and the second blade 32 is moved upward in the adjusting direction T1, so that the space between the first blade 31 and the second blade 32 becomes smaller, and vice versa, larger. This configuration facilitates improving the uniformity of movement of the first blade 31 and the second blade 32.

In the present exemplary embodiment, the second rail 42 is provided as a sliding hole, and the second vane 32 has a second guide portion 321 which is cylindrical and is inserted into the second rail 42, which is simple in structure, easy to process, and space-saving. Without limitation, in other exemplary embodiments, the second blade 32 and the trackpad 40 may be movably connected in other ways.

In an exemplary embodiment, the third axis R3 is coplanar with the first axis R1 and the second axis R2 and equidistant from the first axis R1 and the second axis R2. Thereby facilitating the coordinated control of the first blade 31 and the second blade 32.

In the exemplary embodiment, the first track 41 and the second track 42 may be set to have a constant speed in the adjusting direction T1 when the track disk 40 rotates at a constant speed. To facilitate accurate adjustment.

In the illustrated embodiment, one of the polarization wheels 50 is adjustable in position relative to the support 10 in a direction perpendicular to the first axis R1, thereby facilitating fine adjustment of the position of the third axis R3 to improve product flexibility. In other exemplary embodiments, more than two polarization wheels 50 may be provided to enable their position relative to the support 10 to be adjusted in a direction perpendicular to the first axis R1.

In the exemplary embodiment, the track disk 40 has a tooth-like structure (not shown) at its circumferential edge. The blade assembly further includes a drive gear 60 and a motor (not shown) capable of driving the drive gear 60 to rotate. The driving gear 60 is engaged with the track disk 40 through the tooth structure to drive the track disk 40 to rotate. The structure is simple, and space saving is facilitated. In the illustrated embodiment, the tooth structure may be disposed around the track disk 40 for one revolution or only a portion of the circumferential surface, as desired.

The present invention also provides a beam splitter that, in one exemplary embodiment thereof, includes a blade assembly 100 as shown in fig. 1. In the blade assembly of the beam splitter, the bracket 10, the first rotating arm 21, the second rotating arm 22 and the first blade 31 form a parallel double-crank mechanism, and the motion mode of the first blade 31 is limited to move along an arc-shaped track, and only moves in parallel without tilting or rotating. The first vane 31 is moved by rotating the track disk 40, whereby the first vane 31 is displaced in an adjustment direction T1 perpendicular to the first axis R1. The blade assembly of the light bundling device is simple in structure and beneficial to saving space.

Fig. 7 is a schematic configuration diagram for explaining another exemplary embodiment of the beam splitter, in which a part of the configuration is omitted for clarity of illustration. As shown in fig. 7, the beam splitter includes two of the blade assemblies 100 shown in fig. 5. Two blade assemblies 100 are arranged one above the other in a direction parallel to the first axis R1. The two supports 10 of the two blade assemblies 100 may be, for example, split into a single body, and one track disk 40 is disposed on each side in a direction parallel to the first axis R1, thereby forming a stacked structure; in other exemplary embodiments, the two supports 10 may be provided separately. The adjustment directions T1, T2 of the two leaf assemblies 100 are perpendicular to each other. Two first blades 31 and two second blades 32 define a window 300, the size of the window 300 changes with the rotation of the two track disks 40, fig. 8 shows the state after the two track disks 40 rotate, and the window 300 is minimized. The structure realizes the field control in four directions of up, down, left and right in the figure.

The utility model provides a blade can be used for sheltering from X ray to control the size and the shape of the field of launching of X ray radiation source. For example, when the beam splitter provided by the present invention is used in an X-ray medical apparatus, the blade assembly can adjust the size and shape of an X-ray region projected to a subject to be detected.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims (10)

1. A blade assembly for a beam bunching device, comprising:

a support (10);

a first swivel arm (21) rotatably connected to said stand (10) about a first axis (R1);

a second swivel arm (22) rotatably connected to said stand (10) about a second axis (R2);

a first blade (31) rotatably connecting said first rotating arm (21) and said second rotating arm (22), said bracket, said first rotating arm, said second rotating arm and said first blade forming a parallel double crank mechanism; and

a track disk (40) rotatably connected to said carriage (10) about a third axis (R3) parallel to the first axis (R1); said orbiting plate (40) having a first track (41) extending along a plane perpendicular to the third axis (R3), said first blade (31) being movably connected to said orbiting plate (40) by said first track (41); the first track (41) is arranged at a gradual distance from the third axis (R3) in order to move the first blade (31) by the rotation of the tracking disc (40).

2. The blade assembly of a beam bunching device as defined in claim 1, wherein the blade assembly further comprises a second blade (32), the second blade (32) rotatably connecting the first rotating arm (21) and the second rotating arm (22); the bracket (10), the first rotating arm (21), the second rotating arm (22) and the second blade (32) form a parallel double-crank mechanism; the two axes of rotation of the first blade (31) and of the second blade (32) with respect to the first arm (21) are coplanar with the first axis (R1) so that the rotation of the tracking disk (40) brings the first blade (31) and the second blade (32) closer to or further away from each other in an adjustment direction (T1, T2).

3. The blade assembly of beam bunching optics of claim 2 wherein the tracking disk (40) further has a second track (42) extending along a plane perpendicular to the third axis (R3), the second blade (32) being movably connected to the tracking disk (40) by the second track (42); the second rail (42) is centrosymmetric to the first rail (41) with respect to the third axis (R3).

4. The blade assembly of a beam bunching device according to claim 3, characterized in that the first rail (41) is provided as a slide hole, and the first blade (31) has a first guide portion (311) with a cylindrical shape penetrating the first rail (41); and/or the second rail (42) is provided as a sliding hole, and the second blade (32) is provided with a cylindrical second guide part (321) penetrating through the second rail (42).

5. The vane assembly of beam splitter of claim 1, wherein the third axis (R3) is coplanar with the first axis (R1) and the second axis (R2) and equidistant from the first axis (R1) and the second axis (R2).

6. The blade assembly of a beam bunching device according to claim 1, characterized in that the blade assembly is provided with at least one righting wheel (50) rotatably connected to the bracket (10) with an axis of rotation parallel to the first axis (R1); the circumferential surface of the guide wheel (50) is recessed to form a groove which surrounds along the circumferential direction; the track disc (40) is provided with an outer edge part (43) with a circular outer contour, and the track disc (40) abuts against the bottom wall of the groove of the guide wheel (50) through the outer edge part (43) to limit the rotation axis of the track disc (40).

7. The blade assembly of a beam splitter according to claim 6, wherein at least one of the polarization wheels (50) is adjustable in its position relative to the support (10) in a direction perpendicular to the first axis (R1).

8. The vane assembly of beam forming apparatus according to claim 1, wherein the peripheral edge of the track disk (40) has a toothed structure at least partially, the vane assembly further comprises a driving gear (60) and a motor capable of driving the driving gear (60) to rotate; the driving gear (60) is meshed with the track disc (40) through the tooth-shaped structures to drive the track disc (40) to rotate.

9. Beam light, characterized in that it comprises a blade assembly (100) according to any one of claims 1 to 8.

10. The beam bunching device as defined in claim 9, wherein there are two of the blade assemblies (100), each of the blade assemblies (100) further comprising a second blade (32), wherein rotation of the tracking disk (40) moves the first blades (31) toward or away from each other in an adjustment direction relative to the second blades (32); the adjusting directions (T1, T2) of the two blade assemblies (100) are perpendicular to each other, the two first blades (31) and the two second blades (32) enclose a window (300), and the size of the window (300) is changed along with the rotation of the two track discs (40).

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