Switching assembly of filter disc

Abstract

The utility model discloses a switching assembly of a filter, which comprises a fixed seat, a motor, a support and a second filter, the fixed seat is provided with a switching groove, the switching groove is provided with a through hole, the motor is installed on the switching groove, the output end of the motor is provided with the support, and the second filter is installed on one side of the support. The motor on the switching groove controls the support to rotate, so that the second filter is close to or away from the through hole, and switching of the second filter is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bone density detection, in particular to a switching component of a filter sheet. Background Art

[0002] Dual-energy X-ray absorptiometry (DXA) is a common detection method for bone densitometers and is also the gold standard for diagnosing osteoporosis. During DXA measurement, a beam of low-dose X-rays with two energy peaks is emitted, one energy peak is mainly absorbed by soft tissue, and the other is mainly absorbed by bones. X-rays with two energy peaks need to pass through two corresponding filters, and during the detection process, the two filters need to be switched for separate imaging. The existing filter switching structure mostly uses a connecting rod mechanism and a gear mechanism. The switching structure is large in size, complex to assemble, high in cost, and has a slow switching speed, which cannot meet market needs. Utility Model Content

[0003] In view of the above technical problems existing in the prior art, the utility model provides a filter plate switching component for quickly switching the filter plates.

[0004] The utility model discloses a switching component of a filter plate, comprising a fixing seat, a motor, a bracket and a second filter plate, wherein the fixing seat is provided with a switching slot, the switching slot is provided with a through hole, the motor is mounted on the switching slot, a bracket is provided at the output end of the motor, and the second filter plate is mounted on one side of the bracket.

[0005] Preferably, the second filter plate cooperates with the through hole, a motor bracket is provided on the fixing seat, and the motor is mounted on the motor bracket.

[0006] Preferably, the motor bracket is an anti-radiation component, and an anti-radiation layer is provided in the switching slot.

[0007] Preferably, a ball tube assembly is provided on the fixing seat, and a generating window of the ball tube assembly is installed on the through hole.

[0008] Preferably, a beam limiter is also provided on the through hole.

[0009] Preferably, a reinforcement structure is provided on the bracket, and the second filter plate is mounted on the mounting hole of the bracket by rivets.

[0010] Preferably, a first filter is also provided on the through hole.

[0011] Preferably, the first filter is installed on the inner side or the outer side of the second filter.

[0012] Preferably, the bracket is an aluminum part or an aluminum alloy part; and the motor is a brushless motor.

[0013] Compared with the prior art, the beneficial effect of the utility model is that the motor on the switching slot controls the bracket to rotate, so that the second filter plate is moved closer to or away from the through hole, thereby realizing rapid switching of the second filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the switching assembly of the filter sheet of the utility model;

[0015] Figure 2 is a schematic diagram of the detection port;

[0016] Figure 3 is a schematic diagram of the second filter switching;

[0017] Figure 4 It is a schematic diagram of the cooperation between the second filter and the first filter.

[0018] Markings in the figure: 1 fixed seat, 12 through hole, 13 switching slot, 15 motor bracket, 16 anti-radiation layer,

[0019] 2 tube assembly, 21 window, 22 beam limiter, 3 motor, 4 bracket, 41 reinforcement structure, 42 rivet, 5 second filter, 6 first filter, DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0022] A filter switching assembly, such as Figure 1-Figure 4 As shown, it includes a fixing base 1, a motor 3, a bracket 4 and a second filter 5. The fixing base 1 is provided with a switching slot 13, the switching slot 13 is provided with a through hole 12, the motor 3 is installed on the switching slot 13, the output end of the motor 3 is provided with a bracket 4, and the second filter 5 is installed on one side of the bracket 4.

[0023] The motor 3 on the switching slot 13 controls the rotation of the bracket 4 to make the second filter 5 close to or away from the through hole 12, thereby realizing the switching of the second filter 5. The switching control of the filter is convenient, and the switching is fast; it has the characteristics of simple control, small size, simple assembly, low cost and fast switching speed. In an actual test, the switching speed of the filter 5 is in milliseconds.

[0024] like Figure 2 , when the second filter sheet 5 is away from the through hole 12, no filtering is performed; after rotating a certain angle, such as Figure 3 The second filter 5 is close to the through hole 12 and cooperates with the through hole 12 to filter the X-rays passing through the through hole 12. The fixing seat 1 is provided with a motor bracket 15, and the motor 3 is mounted on the motor bracket 15. The bracket 4 is also provided with a reinforcement structure 41, and the second filter 5 is mounted on the mounting hole of the bracket 4 through a rivet 42.

[0025] Among them, the motor bracket 15 is an anti-radiation part, and the switching slot 13 is provided with an anti-radiation layer 16. The bracket 4 is an aluminum part or an aluminum alloy part, and the overall weight is reduced by using a light material. The motor 3 is a brushless motor, and the rotation angle of the bracket 4 can be positioned by the encoder of the motor 3; but it is not limited to this, and a positioning part or a limiter can also be set on the filtering position and the away position of the second filter.

[0026] The fixing seat 1 is provided with a tube assembly 2 for generating X-rays, and a generating window 21 of the tube assembly 2 is installed on the through hole 12. A beam limiter 22 is also provided on the through hole 12.

[0027] like Figure 4 , a first filter 6 is also provided on the through hole 12, and the first filter 6 can be fixed on the through hole 12 or on the switching slot 13. The first filter 6 is installed on the inner side or the outer side of the second filter 5. When the second filter 5 is away from the through hole 12, X-rays are filtered only through the first filter 6; when the second filter 5 is rotated 90° and approaches the through hole 12, X-rays are filtered together by the first filter 6 and the second filter 5. The utility model has the following effects: 1. Improve image quality: absorb low-energy X-rays (soft rays) and reduce the influence of scattering of soft rays on image clarity and contrast; 2. Reduce the radiation dose of patients and improve safety; 3. Filter out soft rays and increase the proportion of high-energy X-rays, which is more conducive to measurement results.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filter switching assembly, characterized in that: It comprises a fixing seat (1), a motor (3), a bracket (4) and a second filter (5). The fixing seat (1) is provided with a switching groove (13), and the switching groove (13) is provided with a through hole (12). The motor (3) is mounted on the switching slot (13); a bracket (4) is provided at the output end of the motor (3); and the second filter (5) is mounted on one side of the bracket (4).

2. The switching assembly according to claim 1, characterized in that: The second filter plate (5) cooperates with the through hole (12); a motor bracket (15) is provided on the fixing seat (1); and the motor (3) is mounted on the motor bracket (15).

3. The switching assembly according to claim 2, characterized in that: The motor bracket (15) is a radiation-proof component, and a radiation-proof layer (16) is provided in the switching slot (13).

4. The switching assembly according to claim 1, characterized in that: A ball tube assembly (2) is arranged on the fixing seat (1), and a generating window (21) of the ball tube assembly (2) is installed on the through hole (12).

5. The switching assembly according to claim 4, characterized in that: A beam limiter (22) is also provided on the through hole (12).

6. The switching assembly according to claim 1, characterized in that: The support (4) is provided with a reinforcement structure (41), and the second filter plate (5) is mounted on a mounting hole of the support (4) via a rivet (42).

7. The switching assembly according to claim 1, characterized in that: A first filter sheet (6) is also provided on the through hole (12).

8. The switching assembly according to claim 7, characterized in that: The first filter plate (6) is installed on the inner side or the outer side of the second filter plate (5).

9. The switching assembly according to claim 1, characterized in that: The bracket (4) is an aluminum part or an aluminum alloy part; and the motor (3) is a brushless motor.

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