Hidden BNC box body

Abstract

The utility model discloses a hidden BNC box, which relates to the technical field of BNC boxes and comprises a BNC box body and a top cover, electrical components are mounted in the BNC box body, a keel is arranged on the back of the BNC box body, the top of the BNC box body is connected with the top cover through a hinge, the BNC box body is wedge-shaped, small holes are formed in the BNC box body, and sound-absorbing cotton is arranged at the bottom of the top cover. And the sound-absorbing cotton is wedge-shaped. According to the utility model, the material and the shape of the sound absorption wedges are used, so that the BNC box body and the sound absorption wedges are integrated, the appearance and the consistency are better, the visual effect is more outstanding, the sound reflection caused by a reflecting surface can be reduced in the aspect of acoustic performance, and the overall acoustic performance of the semi-anechoic chamber is more excellent; according to the utility model, the keels are adopted for fixation, so that the falling risk caused by metal fatigue after a common externally-hung BNC box body is placed for a long time is avoided, and the BNC box body is safer to use.

Description

Technical Field

[0001] The utility model relates to the technical field of BNC boxes, in particular to a hidden BNC box. Background Art

[0002] The anechoic chamber is not only a special laboratory for acoustic testing, but also an important part of the testing system. In fact, it is also one of the acoustic testing equipment, and its acoustic performance indicators directly affect the accuracy of the test.

[0003] A BNC box will be installed in the anechoic room. In the prior art, most conventional BNC boxes are external smooth-surface boxes that are directly fixed to the sound-absorbing board by rivets. As the rivets age over a long period of time, the fixing effect deteriorates, posing a great safety hazard. In addition, the existing BNC box is directly hung on the wall, which has poor aesthetics. Therefore, a hidden BNC box is urgently needed to solve the above problems. Utility Model Content

[0004] The purpose of the embodiments of the present utility model is to provide a hidden BNC box to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hidden BNC box comprises: a BNC box body and a top cover, wherein electrical components are installed inside the BNC box body, a keel is arranged on the back of the BNC box body for easy fixing on a wall, the top of the BNC box body is connected to the top cover through a hinge, the BNC box body is in a wedge shape, a plurality of groups of small holes are opened on the BNC box body, and sound-absorbing cotton is arranged at the bottom of the top cover, and the sound-absorbing cotton is in a wedge shape.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. The utility model uses the material and shape of the sound-absorbing wedge, which not only integrates the BNC box body with the sound-absorbing wedge, but also improves the aesthetics and consistency, and the visual effect is more outstanding. In terms of acoustic performance, it can also reduce the sound reflection caused by the reflective surface, making the overall acoustic performance of the semi-anechoic chamber better;

[0009] 2. The utility model adopts keels for fixing, avoiding the risk of falling off caused by metal fatigue after long-term placement of general external BNC boxes, and is safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a schematic structural diagram of a hidden BNC box in an embodiment of the utility model.

[0011] Figure 2It is a structural schematic diagram of the BNC box body in the embodiment of the utility model.

[0012] Figure 3 It is a schematic diagram of the structure of the top cover in the embodiment of the utility model.

[0013] In the picture: 1. BNC box body; 2. Top cover; 3. Sound-absorbing cotton. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0015] In the present utility model embodiment, please refer to Figures 1 to 3 A hidden BNC box comprises: a BNC box body 1 and a top cover 2, wherein electrical components are installed inside the BNC box body 1, a keel is provided on the back of the BNC box body 1 for easy fixing on the wall, the top of the BNC box body 1 is connected to the top cover 2 through a hinge, the BNC box body 1 is wedge-shaped, a plurality of groups of small holes are opened on the BNC box body 1, a sound-absorbing cotton 3 is provided at the bottom of the top cover 2, and the sound-absorbing cotton 3 is wedge-shaped; the inside of the BNC box body is filled with sound-absorbing material.

[0016] The electrical components are installed inside the BNC box body 1, and are fixed to the wall by the keel arranged on the back of the BNC box body 1, so as to avoid the risk of falling off caused by metal fatigue after the BNC box body 1 is placed for a long time, and the use is safer. The BNC box body 1 adopts a wedge shape, so that the BNC box body 1 has the same appearance as the sound-absorbing wedge, and has better aesthetics and consistency, and more outstanding visual effects. The wedge-shaped sound-absorbing structure can make the incident sound waves enter in a gradual transition manner, so as to achieve a good impedance matching state, so that the sound waves can completely enter the sound-absorbing material and be fully absorbed in the sound-absorbing material; in terms of acoustic performance, the sound reflection caused by the reflective surface can also be reduced, so that the overall acoustic performance of the semi-anechoic chamber is better.

[0017] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0018] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hidden BNC box, characterized in that: include: The BNC box body and the top cover, the BNC box body is internally installed with electrical components, the back of the BNC box body is provided with a keel for easy fixing on the wall, the top of the BNC box body is connected to the top cover through a hinge, the BNC box body is wedge-shaped, the BNC box body is provided with a plurality of groups of small holes, the bottom of the top cover is provided with sound-absorbing cotton, and the sound-absorbing cotton is wedge-shaped.

2. A hidden BNC box according to claim 1, characterized in that: The interior of the BNC box body is filled with sound absorbing material.

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