Adjustable electromagnetic shielding device for electromagnetic probe

Abstract

The utility model relates to an adjustable electromagnetic shielding device for an electromagnetic probe, which is arranged on the outer side of the electromagnetic probe (3) and comprises an outer shielding case (1) and an inner shielding case (2), the outer shielding case (1) is a cylindrical shell, and a hollow area is arranged on the circumferential side wall of the outer shielding case (1). The inner shielding case (2) is rotatably arranged in the outer shielding case (1) and located at the hollow area of the outer shielding case (1), and the positioning assembly is used for keeping the outer shielding case (1), the inner shielding case (2) and the electromagnetic probe (3) at relative positions. The utility model aims to solve or at least alleviate the problem that the detection range and the detection direction of the existing shielding device are not easy to adjust, and provides an adjustable electromagnetic shielding device for an electromagnetic probe.

Description

Technical Field

[0001] This utility model belongs to the field of detection shielding technology, and in particular relates to an adjustable electromagnetic shielding device for electromagnetic probes. Background Technology

[0002] In the field of electromagnetic detection, electromagnetic probes are key devices for acquiring electromagnetic field information, and their working environment is subject to various complex electromagnetic interferences. These interferences may originate from surrounding electrical equipment, electromagnetic radiation from the natural environment, etc., and can seriously affect the detection accuracy and reliability of electromagnetic probes.

[0003] Traditional electromagnetic shielding devices typically employ a fixed structure, with their shielding effectiveness and direction pre-set, making it difficult to flexibly adjust them according to actual detection needs. When precise detection of electromagnetic fields in a specific direction is required, fixed-structure shielding devices cannot effectively shield interfering electromagnetic fields from other directions, leading to inaccurate detection results.

[0004] Furthermore, in practical applications, the detection environment and target of electromagnetic probes may change, requiring adjustments to the shielding effect and detection direction of the shielding device. However, existing electromagnetic shielding devices lack adjustability and cannot meet this dynamic adjustment requirement, limiting the application range and performance of electromagnetic probes in complex electromagnetic environments. Therefore, developing an electromagnetic shielding device capable of flexibly adjusting the shielding effect and detection direction is of significant practical importance. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, solve or at least alleviate the problem that the existing shielding devices are not easy to adjust the detection range and detection direction, and provide an adjustable electromagnetic shielding device for electromagnetic probes.

[0006] This utility model is achieved through the following technical solution:

[0007] An adjustable electromagnetic shielding device for an electromagnetic probe is disposed on the outside of the electromagnetic probe and includes an outer shield and an inner shield. The outer shield is a cylindrical shell with a hollow area on its circumferential sidewall. The inner shield is rotatably disposed inside the outer shield and located at the hollow area of ​​the outer shield.

[0008] It also includes positioning components, which are used to keep the outer shield, inner shield and electromagnetic probe in relative positions.

[0009] To further realize this utility model, the following technical solutions may be preferred:

[0010] Preferably, the outer shielding cover includes an integrally formed top plate, bottom plate, and outer side plate, wherein the cross-section of the outer side plate is arc-shaped.

[0011] Preferably, the inner shielding cover includes an inner side plate, the cross-section of which is arc-shaped and is slidably disposed on the inner side of the outer side plate.

[0012] Preferably, the positioning component includes an outer positioning sleeve and an inner positioning sleeve. The outer positioning sleeve is fixedly disposed at the center of the top plate, and the inner positioning sleeve is fixedly disposed at the center of the upper end of the inner side plate. The inner positioning sleeve rotates and fits inside the outer positioning sleeve, and the upper end of the inner positioning sleeve extends upward beyond the outer positioning sleeve.

[0013] Preferably, the positioning component further includes a locking plug, which is fitted onto the cable of the electromagnetic probe and located above the inner positioning sleeve. The locking plug is a frustum-shaped cylinder made of elastic material, with a larger diameter at the top and a smaller diameter at the bottom. The smaller diameter of the locking plug is smaller than the inner diameter of the inner positioning sleeve, and the larger diameter of the locking plug is larger than the inner diameter of the inner positioning sleeve.

[0014] Preferably, the positioning component further includes a locking cover, the locking cover having an n-shaped longitudinal section, the horizontal section of the locking cover fitting onto the cable of the electromagnetic probe and located above the locking plug, and the vertical section of the locking cover threadedly fitting onto the outer positioning sleeve.

[0015] Preferably, both the outer shield and the inner shield are made of a high-permeability alloy or a conductive metal mesh.

[0016] The beneficial effects of this utility model through the above technical solution are:

[0017] 1. Adjustable Shielding Performance: By adjusting the relative positions of the inner and outer shields, a slit can be created between them, allowing selective conduction of the electromagnetic field in the target detection direction to the electromagnetic probe. This adjustable design enables the shielding device to flexibly adjust the shielding effect and detection direction according to actual detection needs, effectively shielding interfering electromagnetic fields from other directions and improving the detection accuracy and reliability of the electromagnetic probe in complex electromagnetic environments.

[0018] 2. Stable Relative Position Maintenance: The positioning components ensure a stable relative position between the outer shield, inner shield, and electromagnetic probe. Firstly, the cooperation of the outer and inner positioning sleeves allows the inner shield to rotate stably within a certain range and precisely adjusts the relative positions of the outer and inner shields. Secondly, the combination of the locking plug and locking cover maintains the relative positions of the inner shield and the electromagnetic probe's cable, as well as the inner and outer shields, ensuring the slit itself maintains a relative width and its relative position to the electromagnetic probe, further improving the stability and accuracy of the detection.

[0019] 3. Easy to operate: The relative positions of the outer and inner shielding covers can be adjusted by rotating the inner positioning sleeve that extends from the outer positioning sleeve, making operation simple and convenient. Furthermore, the design of the locking plug and locking cover allows for easy locking and securing after the relative positions are adjusted, further improving ease of use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0022] Figure 3 For the present utility model Figure 2 Sectional view at point AA;

[0023] Figure 4 For the present utility model Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the outer shielding cover of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the inner shielding cover of this utility model;

[0026] Wherein: 1-Outer shielding cover; 2-Inner shielding cover; 3-Electromagnetic probe; 4-Outer positioning sleeve; 5-Inner positioning sleeve; 6-Locking plug; 7-Locking cover. Detailed Implementation

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] Example 1:

[0030] like Figures 1-6 As shown, an adjustable electromagnetic shielding device for an electromagnetic probe is disposed outside the electromagnetic probe 3. It includes an outer shielding cover 1 and an inner shielding cover 2. The outer shielding cover 1 is a cylindrical shell with a hollow area on its circumferential sidewall. The inner shielding cover 2 is rotatably disposed inside the outer shielding cover 1 and located at the hollow area of ​​the outer shielding cover 1. By adjusting the relative position of the inner shielding cover 2 and the outer shielding cover 1, a slit is created between the inner shielding cover 2 and the outer shielding cover 1, and the electromagnetic field in the target detection direction is conducted to the electromagnetic probe 3 through the slit.

[0031] It also includes positioning components for maintaining the relative positions of the outer shield 1, the inner shield 2, and the electromagnetic probe 3; and for maintaining the relative width of the slit itself and its relative position to the electromagnetic probe 3.

[0032] The outer shield 1 includes an integrally formed top plate, bottom plate, and outer side plate. The cross-section of the outer side plate is arc-shaped. The inner shield 2 includes an inner side plate. The cross-section of the inner side plate is arc-shaped and it is slidably disposed inside the outer side plate.

[0033] The top plate and bottom plate are respectively provided with downward and upward flanges, and the inner shield 2 rotates within the flanges.

[0034] The positioning assembly includes an outer positioning sleeve 4 and an inner positioning sleeve 5. The outer positioning sleeve 4 is fixedly installed at the center of the top plate, and the inner positioning sleeve 5 is fixedly installed at the center of the upper end of the inner side plate. The inner positioning sleeve 5 is rotatably fitted into the outer positioning sleeve 4, and the upper end of the inner positioning sleeve 5 extends upward out of the outer positioning sleeve 4. By rotating the inner positioning sleeve 5 that extends out of the outer positioning sleeve 4, the relative position of the outer shield 1 and the inner shield 2 can be adjusted.

[0035] In order to keep the inner shield 2 and the electromagnetic probe 3 in relative position, the positioning assembly also includes a locking plug 6. The locking plug 6 is fitted onto the cable of the electromagnetic probe 3 and is located above the inner positioning sleeve 5. The locking plug 6 is a frustum-shaped cylinder made of elastic material, which is larger at the top and smaller at the bottom. The small diameter of the locking plug 6 is smaller than the inner diameter of the inner positioning sleeve 5, and the large diameter of the locking plug 6 is larger than the inner diameter of the inner positioning sleeve 5.

[0036] In order to lock the inner shield 2 and the electromagnetic probe 3 cable with the locking plug 6 and keep the inner shield 2 and the outer shield 1 in relative position, the positioning assembly also includes a locking cover 7. The longitudinal section of the locking cover 7 is n-shaped. The horizontal section of the locking cover 7 is fitted with the electromagnetic probe 3 cable and is located above the locking plug 6. The vertical section of the locking cover 7 is threaded onto the outer positioning sleeve 4.

[0037] Both the outer shield 1 and the inner shield 2 are made of high magnetic permeability alloy or conductive metal mesh.

[0038] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable electromagnetic shielding device for an electromagnetic probe, disposed on the outside of the electromagnetic probe (3), characterized in that, It includes an outer shield (1) and an inner shield (2). The outer shield (1) is a cylindrical shell with a hollow area on its circumferential sidewall. The inner shield (2) is rotatably disposed inside the outer shield (1) and located at the hollow area of ​​the outer shield (1). It also includes a positioning component for maintaining the relative positions of the outer shield (1), the inner shield (2) and the electromagnetic probe (3).

2. The adjustable electromagnetic shielding device for an electromagnetic probe according to claim 1, characterized in that, The outer shield (1) includes an integrally formed top plate, bottom plate and outer side plate, and the cross-section of the outer side plate is arc-shaped.

3. An adjustable electromagnetic shielding device for an electromagnetic probe according to claim 2, characterized in that, The inner shield (2) includes an inner side plate, the cross-section of which is arc-shaped and is slidably disposed on the inner side of the outer side plate.

4. An adjustable electromagnetic shielding device for an electromagnetic probe according to claim 3, characterized in that, The positioning component includes an outer positioning sleeve (4) and an inner positioning sleeve (5). The outer positioning sleeve (4) is fixedly installed at the center of the top plate, and the inner positioning sleeve (5) is fixedly installed at the center of the upper end of the inner side plate. The inner positioning sleeve (5) rotates and fits inside the outer positioning sleeve (4), and the upper end of the inner positioning sleeve (5) extends upward out of the outer positioning sleeve (4).

5. An adjustable electromagnetic shielding device for an electromagnetic probe according to claim 4, characterized in that, The positioning component also includes a locking plug (6), which is fitted onto the cable of the electromagnetic probe (3) and located above the inner positioning sleeve (5). The locking plug (6) is a frustum-shaped structure made of elastic material, with a larger diameter at the top and a smaller diameter at the bottom. The smaller diameter of the locking plug (6) is smaller than the inner diameter of the inner positioning sleeve (5), and the larger diameter of the locking plug (6) is larger than the inner diameter of the inner positioning sleeve (5).

6. An adjustable electromagnetic shielding device for an electromagnetic probe according to claim 5, characterized in that, The positioning assembly also includes a locking cover (7), the longitudinal section of which is n-shaped. The horizontal section of the locking cover (7) is fitted onto the cable of the electromagnetic probe (3) and is located above the locking plug (6). The vertical section of the locking cover (7) is threaded onto the outer positioning sleeve (4).

7. An adjustable electromagnetic shielding device for an electromagnetic probe according to claim 1, characterized in that, Both the outer shield (1) and the inner shield (2) are made of high magnetic permeability alloy or conductive metal mesh.

Images