Metallic housing assembly with built-in antenna

Abstract

This utility model discloses a metal housing assembly with a built-in antenna. The metal housing has mounting holes on its upper side for installing the antenna; the antenna support plate has two side fixing holes and two central fixing holes; the antenna support plate has mating holes along its center, including horizontal and vertical mating holes; the antenna assembly is a miniature PCB-type band antenna module with a lower connecting line at its bottom; the antenna cover has two horizontal and vertical mating holes corresponding to the fixing holes; the distance between the antenna mirror plate in the antenna mirror plate assembly and the PCB in the antenna assembly is D, and the adjustment column in the antenna mirror plate assembly can adjust the distance D to the required value and fix it. This design eliminates the need for complex antenna design, matching, and isolation technologies found in smartphones, and can be used for hidden RF antenna layouts in various metal-cased devices. It avoids RF signal absorption and reflection by the metal housing, improves antenna gain, and increases the efficiency and stability of RF signal radiation and reception.

Description

Technical Field

[0001] This utility model relates to medical device technology, and more particularly to a metal housing assembly with a built-in antenna. Background Technology

[0002] Currently, video laryngoscopes are used for the examination and diagnosis of laryngeal conditions and to assist in the intubation of anesthetized patients in emergency situations. To meet the needs of doctors who require higher-resolution images and a wider field of view when observing laryngeal lesions or the glottis of the airway, thereby reducing the likelihood of misdiagnosis or misintubation, an increasing number of high-definition video laryngoscopes are being used. The new generation of high-definition video laryngoscopes features enhanced intelligent and network capabilities to improve the ease of operation for doctors, and the real-time transmission of laryngoscope images via network connection facilitates expert guidance and teaching.

[0003] Patent document with application number "CN202510095523.7" discloses a video laryngoscope, including a display device, a lens assembly, and a main body assembly. The main body assembly is connected to the display device and is detachably snapped into the lens assembly. The main body assembly includes a main housing, a spring clip, a data assembly, and a camera assembly, which are quickly engaged and disengaged from the lens assembly mounting part via the spring clip. The lens assembly includes an integrated lens housing and a lens cover, with a sealed lens window at the rear end to prevent direct contact between the main body assembly and the patient, reducing disposable costs. This invention, through its detachable design, allows for the reuse of the main body assembly, reducing resource waste and medical waste generation, while improving the versatility and flexibility of the equipment, adapting to different specifications of lens assemblies, and reducing usage costs, resulting in significant environmental and economic benefits.

[0004] Patent application CN202310676214.X discloses a laryngoscope assembly and a portion thereof. The laryngoscope assembly includes a blade unit extending from a proximal end to a distal end, the blade unit having a distal portion extending to the distal end and including a first surface, wherein the distal portion is adapted for insertion into a patient's oral cavity, and wherein the first surface faces the patient's tongue. The laryngoscope assembly further includes a control unit comprising a body portion having a first body portion and a second body portion, the first body portion being connectable to the blade unit. The control unit and the blade unit, when connected, together form a laryngoscope. The control unit is adapted to receive image data from an image sensor when image data is generated by the image sensor, wherein, at least when the control unit is connected to the blade unit, the image data indicates a view from the distal portion of the blade unit in a direction at least partially toward the distal end.

[0005] The aforementioned patent documents, in conjunction with existing technology, reveal the following drawbacks of existing metal housing assemblies for built-in antennas:

[0006] In the existing technology, the above functions are usually achieved by building a radio frequency module and antenna into the video laryngoscope, as well as a metal shell for heat dissipation of the smart chip. However, the existing technology has the problem of shielding radio frequency signals by the metal shell, resulting in poor signal performance. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, this utility model provides a metal housing assembly with an internal antenna, which solves the related problems of metal housing assemblies with internal antennas.

[0008] The first aspect of this utility model is to provide a metal housing assembly with an internal antenna, including a metal housing, an antenna support plate, an antenna assembly, an antenna cover, and an antenna mirror plate assembly. The metal housing has mounting holes on its upper side for mounting the antenna. The antenna support plate has two side fixing holes and two central fixing holes. The antenna support plate has mating holes along its central section, including transverse and longitudinal mating holes. The antenna assembly is a miniature PCB-type band antenna module with a lower connecting wire at its lower part. The antenna cover has two transverse mating holes and two longitudinal mating holes corresponding to the fixing holes. The antenna support plate is fixed within the mounting holes, and the antenna assembly is fixed between the antenna support plate and the antenna cover. The area of ​​the antenna assembly is smaller than the area of ​​the antenna cover. The lower connecting wire extends into the metal housing through the mating holes. The side fixing posts are fixed to the side fixing holes, and the central fixing posts are fixed to the central fixing holes. The antenna mirror board assembly is installed inside the metal housing, below the antenna mounting hole. The antenna mirror board assembly includes an antenna mirror board, a mirror board connecting frame, and a spacing adjustment column. The antenna mirror board is parallel to the PCB of the antenna assembly, and the spacing D between them can be adjusted by the adjustment column. The area of ​​the antenna mirror board is larger than the antenna mounting hole and covers the peripheral area near the lower part of the antenna mounting hole. The antenna mirror board is a metal plate and is fixed between the antenna assembly and the circuit board installed inside the metal housing. The antenna mirror board is electrically connected at multiple points to the RF grounding points of the metal housing and the circuit board.

[0009] In a preferred embodiment of the first aspect of this utility model, the upper part of the antenna support plate is coated with adhesive and fixed to the lower part of the antenna cover by the adhesive.

[0010] In a preferred embodiment of the first aspect of this utility model, the lower part of the antenna support plate is installed in the mounting hole by means of adhesive fixation.

[0011] In a preferred embodiment of the first aspect of this utility model, the antenna assembly is rectangular.

[0012] In a preferred embodiment of the first aspect of this utility model, the antenna mirror plate is a rectangular metal plate, and the spacing D can be adjusted to a value between 20 and 30 mm by the adjustment column so that the two frequency signals (2.4 GHz and 5 GHz) received by the antenna reach approximately the same peak value. In the application of dual-band WIFI wireless networking, the WIFI channel can be switched quickly while maintaining the efficiency and stability of wireless networking.

[0013] In a preferred embodiment of the first aspect of this utility model, the antenna support plate includes an upper body and a lower body, the area of ​​the upper body is larger than the area of ​​the lower body, and the transition between the upper body and the lower body is stepped.

[0014] In a first aspect of this invention, as a preferred embodiment, the surface of the antenna cover is parallel to the surface of the antenna assembly.

[0015] In a first aspect of this invention, as a preferred embodiment, the surface of the antenna support plate is parallel to the surface of the antenna assembly.

[0016] In a preferred embodiment of the first aspect of this utility model, the antenna cover is a plastic cover.

[0017] In a preferred embodiment of the first aspect of this utility model, the antenna support plate is a plastic support plate.

[0018] In a first aspect of this utility model, as a preferred embodiment, the length of the transverse mating hole is greater than that of the longitudinal mating hole, and the width of the longitudinal mating hole is greater than that of the transverse mating hole.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The metal housing has mounting holes on its upper side for mounting the antenna; the antenna support plate has two side fixing holes and two central fixing holes; the antenna support plate has mating holes along its center, including lateral mating holes and longitudinal mating holes; the antenna assembly is a miniature PCB-type band antenna module with a lower connecting wire at its bottom; the antenna cover has two lateral mating holes and two longitudinal mating holes corresponding to the fixing holes; the antenna support plate is fixed in the mounting holes, the antenna assembly is fixed between the antenna support plate and the antenna cover, the area of ​​the antenna assembly is smaller than the area of ​​the antenna cover, and the antenna mirror... The image board assembly is installed inside the metal housing, below the antenna mounting hole. The antenna image board assembly includes an antenna image board, an image board connecting frame, and a spacing adjustment column. The antenna image board is parallel to the PCB of the antenna assembly, and the spacing D between them can be adjusted by the adjustment column. The area of ​​the antenna image board is larger than the antenna mounting hole and covers the peripheral area near the lower part of the antenna mounting hole. The antenna image board is a metal plate and is fixed between the antenna assembly and the circuit board installed inside the metal housing. The antenna image board is electrically connected at multiple points to the RF grounding points of the metal housing and the circuit board.

[0021] The lower connecting line extends into the metal housing through the mating hole, the side fixing post is fixed to the side fixing hole, and the middle fixing post is fixed to the middle fixing hole. By using the combination of a metal housing, antenna support plate, antenna assembly, antenna cover, and antenna mirror plate assembly, the complex antenna design, matching, and isolation technologies used in smartphones are eliminated. This allows for a concealed RF antenna layout in various metal-cased devices, preventing RF signals from being absorbed and reflected by the metal housing, improving antenna gain, and increasing the efficiency and stability of RF signal radiation and reception. Attached Figure Description

[0022] Figure 1 This is an exploded view of the present invention;

[0023] Figure 2 This is a perspective view of the present utility model;

[0024] Figure 3 This is another perspective view of the present invention;

[0025] Figure 4 This is another perspective view of the present utility model.

[0026] In the diagram: 10. Metal casing; 11. Mounting hole; 12. Antenna mirror plate assembly; 121. Antenna mirror plate; 122. Mirror plate connecting frame; 123. Spacing adjustment column; 20. Antenna support plate; 201. Side fixing hole; 202. Middle fixing hole; 21. Upper main body; 22. Lower main body; 23. Mating hole; 231. Lateral mating hole; 232. Longitudinal mating hole; 30. Antenna assembly; 31. Lower connecting line; 40. Antenna cover; 41. Side fixing column; 42. Middle fixing column. Detailed Implementation

[0027] The utility model will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] =The terms “first,” “second,” etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0031] like Figure 1-4 As shown, a metal housing assembly with an internal antenna includes a metal housing 10, an antenna mirror plate assembly 12, an antenna support plate 20, an antenna assembly 30, and an antenna cover 40. The metal housing 10 has a mounting hole 11 on its outer upper side for mounting the antenna. The antenna mirror plate assembly 12 is mounted on the inner side of the metal housing 10 below the mounting hole 11. The antenna mirror plate assembly 12 includes an antenna mirror plate 121, a mirror plate connecting frame 122, and a spacing adjustment column 123. The mirror plate connecting frame 122 fixes the antenna mirror plate 121 parallel to the PCB in the antenna assembly 30. The spacing adjustment column 123 can adjust the spacing D between the antenna mirror plate 121 and the PCB in the antenna assembly 30. The antenna mirror plate 121 is rectangular in shape, with an area larger than the antenna mounting hole 11 and covering the area near its lower periphery. The antenna mirror plate 121 is fixed between the antenna assembly 30 and the circuit board mounted inside the metal housing 10. The antenna mirror plate is electrically connected at multiple points to the radio frequency grounding points of the metal housing 10 and the circuit board.

[0032] The spacing D can be adjusted to a value ranging from 13 to 35 mm by the spacing adjustment column 123 and then fixed; the antenna support plate 20 is provided with two side fixing holes 201 and two central fixing holes 202; the antenna support plate 20 is provided with mating holes 23 along the middle, the mating holes 23 including transverse mating holes 231 and longitudinal mating holes 232; the antenna assembly 30 is a miniature PCB type band antenna module and is provided with a lower connecting line 31 at its lower part; the antenna cover 40 is provided with a hole opposite to the fixing hole. The antenna support plate 20 is fixed in the mounting hole 11, the antenna assembly 30 is fixed between the antenna support plate 20 and the antenna cover 40, the area of ​​the antenna assembly 30 is smaller than the area of ​​the antenna cover 40, the lower connecting line 31 extends into the metal housing 10 through the mounting hole 23, the side fixing post 41 is fixed in the side fixing hole 201, and the middle fixing post 42 is fixed in the middle fixing hole 202. The combination of a metal housing 10, an antenna mirror plate assembly 12, an antenna support plate 20, an antenna assembly 30, and an antenna cover 40 fixes the distance between the antenna assembly 30 and the metal housing 10, and between the antenna assembly 30 and the antenna mirror plate 121, within a certain range. This results in the reflection of the reverse RF lobe and the in-phase enhancement of the forward RF lobe of the antenna assembly 30. Simultaneously, it shields against RF interference generated by the electronic motherboard mounted below the antenna mirror plate and fixes the clearance between the antenna assembly 30 and surrounding metal parts, preventing antenna performance degradation due to insufficient clearance caused by assembly position errors, thus ensuring the stable performance of the antenna assembly 30. This combination enhances the gain, directivity, and anti-interference performance of the antenna assembly 30. It is also suitable for dual-band WIFI antenna applications in the frequency range of 2.4GHz to 5.5GHz, achieving optimized antenna reception and transmission performance. It eliminates the need for complex antenna design, matching, and isolation technologies found in smartphones, and can be used for hidden RF antenna layouts in various metal-cased devices. This prevents RF signals from being absorbed and reflected by the metal casing, improves antenna gain, and increases the efficiency and stability of RF signal radiation and reception.

[0033] In a preferred embodiment of the first aspect of this utility model, the antenna mirror plate 121 is a metal plate, installed on the inner side of the metal housing 10 below the antenna mounting hole 11, at a distance D from the antenna assembly 30, and connected to the metal housing 10 at multiple points. The antenna mirror plate 121 and the lower connecting line 31 of the antenna assembly 30 are connected to the ground terminal of the antenna feed on the circuit board at multiple points. The spacing D can be adjusted to a target size of one-quarter wavelength of the WIFI radio frequency antenna signal. Considering that the parameters of each antenna assembly 30 inevitably have certain errors during the manufacturing process, and the size and installation position of each antenna assembly 30 and antenna mirror plate 121 also have certain deviations during the manufacturing process, these errors can be offset by adjusting the spacing D through the spacing adjustment column 123 during mass production, thereby optimizing the overall antenna combination's transmission and reception performance to near-optimal levels, and then fixing it to prevent changes. In scenarios where mobile telecommunications communication is not required, and only WIFI connection is needed to achieve medical data networking, the signal attenuation problem of the radio frequency antenna built into the metal housing in small medical handheld devices can be effectively solved.

[0034] In a preferred embodiment of the first aspect of this invention, the upper part of the antenna support plate 20 is coated with adhesive and fixed to the lower part of the antenna cover 40 by the adhesive. The lower part of the antenna support plate 20 is installed in the mounting hole 11 by adhesive fixation. This effectively solves the signal shielding problem of the built-in radio frequency antenna in the metal casing of small medical handheld devices, specifically for scenarios where mobile telecommunications communication is not required and only medical data networking is needed.

[0035] In a preferred embodiment of the first aspect of this utility model, the antenna assembly 30 is rectangular. The antenna support plate 20 includes an upper body 21 and a lower body 22. The area of ​​the upper body 21 is larger than the area of ​​the lower body 22, and the transition between the upper body 21 and the lower body 22 is stepped. Specifically, a metal shell encloses the entire product. To allow the antenna's radio frequency signal to overcome the shielding effect of the metal shell and be transmitted according to specific beam directivity, beam angle, and gain requirements, the antenna is embedded into slots on the upper side of the metal shell to achieve signal transmission and reception. After fitting, the antenna and the shell are integrated into one unit.

[0036] In a first aspect of this utility model, as a preferred embodiment, the surface of the antenna cover 40 is parallel to the surface of the antenna assembly 30. The surface of the antenna support plate 20 is parallel to the surface of the antenna assembly 30. The antenna cover 40 is a plastic cover. The antenna support plate 20 is a plastic support plate. The length of the transverse mating hole 231 is greater than the length of the longitudinal mating hole 232, and the width of the longitudinal mating hole 232 is greater than the width of the transverse mating hole 231. This application also solves the following problems:

[0037] 1. It simplifies the design complexity of dual-band antennas embedded in a metal shell: By combining the independently designed miniature PCB-type band antenna module with the independent window design of the metal shell, the mutual interference between the antenna element size and the feed node is avoided, and the directivity, gain and matching performance are improved.

[0038] 2. Improved stability of antenna clearance requirements: Precision metal shell window machining dimensions combined with the boundary solidification of layered antenna bonding process ensure that the antenna clearance distance exceeds the required distance plus design margin and is not affected by assembly errors, thereby improving antenna gain and anti-interference stability.

[0039] 3. This approach allows for flexible customization of antenna sizes for various applications. The plastic encapsulation protects the antenna from external interference and contamination, preventing performance degradation. It also overcomes the signal loss caused by the absorption and reflection of transmitted RF signals by the metal casing, a problem common with internal patch antennas. Furthermore, it reduces shielding of useful received signals.

[0040] 4. It simplifies assembly, reduces the difficulty of antenna design and manufacturing, overcomes the complex calculations and simulations of shell antennas, as well as repeated prototyping, calibration and testing, improves antenna stability, consistency and compatibility, and facilitates inspection and maintenance.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A metal housing assembly with an integrated antenna, characterized in that, It includes a metal housing, an antenna support plate, an antenna assembly, an antenna cover, and an antenna mirror plate assembly. The metal housing has mounting holes on its upper side for mounting the antenna. The antenna support plate is provided with two side fixing holes and two central fixing holes; the antenna support plate is provided with mating holes along the central part, the mating holes including transverse mating holes and longitudinal mating holes; The antenna assembly is a miniature PCB-type band antenna module with a lower connecting line at its bottom; the antenna cover has two horizontal mating holes and two vertical mating holes corresponding to the fixing holes. The antenna support plate is fixed in the mounting hole, and the antenna assembly is fixed between the antenna support plate and the antenna cover. The area of ​​the antenna assembly is smaller than the area of ​​the antenna cover. The lower connecting line extends into the metal housing through the mating hole. The lower part of the antenna cover is provided with a side fixing post and a middle fixing post. The side fixing post is fixed in the side fixing hole, and the middle fixing post is fixed in the middle fixing hole. The antenna mirror plate assembly is installed inside the metal housing relative to the antenna support plate. The antenna mirror plate assembly includes an antenna mirror plate, a mirror plate connecting frame, and a spacing adjustment post. The antenna mirror plate is parallel to the PCB of the antenna assembly, and the spacing D between them is adjusted by the adjustment post. The area of ​​the antenna mirror plate is larger than the antenna mounting hole and covers the outer extension area below the antenna mounting hole.

2. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The antenna image plate is a metal plate, and the spacing D can be adjusted by adjusting the column.

3. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The spacing D between the antenna mirror board and the PCB in the antenna assembly can be adjusted from 13 to 35 mm.

4. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The upper part of the antenna support plate is coated with glue and fixed to the lower part of the antenna cover by the glue.

5. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The lower part of the antenna support plate is installed in the mounting hole by adhesive bonding.

6. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The surface of the antenna cover is parallel to the surface of the antenna assembly.

7. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The surface of the antenna support plate is parallel to the surface of the antenna assembly.

8. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The antenna cover is a plastic cover.

9. The metal housing assembly with an internal antenna as described in claim 1, characterized in that: The antenna support plate is a plastic support plate.

10. The metal housing assembly with an internal antenna as claimed in claim 1, characterized in that: The length of the transverse mating hole is greater than that of the longitudinal mating hole, and the width of the longitudinal mating hole is greater than that of the transverse mating hole.

Images