Supporting and guiding device for omni-directional ceiling antenna and omni-directional ceiling antenna

Abstract

A supporting and guiding device used for an omnidirectional ceiling antenna comprises a lock catch structure used for being locked on a low-frequency oscillator and a cantilever buckle structure used for fixing a high-frequency oscillator, and the lock catch structure is connected to the low-frequency oscillator by means of force generated by deformation of the supporting and guiding device. In addition, the invention also relates to an omnidirectional ceiling antenna comprising the supporting and guiding device. The supporting and guiding device is integrally formed, so that the assembly tolerance between the high-frequency oscillator and the low-frequency oscillator is reduced, the coaxiality between the high-frequency oscillator and the low-frequency oscillator is improved, and the radiation pattern and the intermodulation performance of the antenna are stabilized.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile communication antennas, and specifically to a support and guiding device for an omnidirectional ceiling antenna and an omnidirectional ceiling antenna including the device, which is particularly suitable for solving the problems of insufficient coaxiality in the assembly of high-frequency oscillators and low-frequency oscillators and low support strength. Background Art

[0002] The omnidirectional ceiling antenna is a core device for indoor mobile communication network coverage, and it realizes broadband signal coverage through the collaborative work of high-frequency oscillators and low-frequency oscillators. In traditional designs, high-frequency oscillators and low-frequency oscillators are fixed by brass threaded parts, plastic isolation blocks, and EPS foam, and there are the following problems:

[0003] Complex assembly: The superposition of multiple components leads to the accumulation of tolerances, affecting coaxiality; insufficient support: The plastic isolation block has low stiffness, and the EPS foam is too soft, easily causing the displacement of the oscillator; unstable performance: Vibration or dropping is likely to cause deformation of the oscillator, deteriorating the radiation pattern and intermodulation performance. Summary of the Invention

[0004] To achieve the above object and solve the problems described in the background art, the present invention provides a support and guiding device for an omnidirectional ceiling antenna and an omnidirectional ceiling antenna. The support and guiding device according to the present invention can increase the support strength for the high-frequency oscillator, preventing the high-frequency oscillator located inside the radome from colliding with or contacting the radome under external influences.

[0005] For this purpose, according to one aspect of the present invention, a support and guiding device for an omnidirectional ceiling antenna is proposed. The support and guiding device reduces the assembly tolerance between the high-frequency oscillator and the low-frequency oscillator through integral molding, improves the coaxiality between the high-frequency oscillator and the low-frequency oscillator, and stabilizes the radiation pattern and intermodulation performance of the antenna. Among them, the support and guiding device includes a locking structure for locking on the low-frequency oscillator and a cantilever snap structure for fixing the high-frequency oscillator. The locking structure is combined, especially pressed against, the low-frequency oscillator by the force generated by the deformation, especially elastic deformation, of the support and guiding device.

[0006] The locking structure of the support and guiding device according to the present invention is configured to be especially continuously attached to the inner and outer walls of the low-frequency oscillator by the force generated by the deformation of the support and guiding device in the installed state. On the one hand, it can stably fix the high-frequency oscillator on the low-frequency oscillator. On the other hand, the elastic deformation of the support and guiding device can also absorb the force generated by vibration or dropping. Thus, it can effectively prevent the high-frequency oscillator from deforming due to external influences or colliding with or contacting the radome.

[0007] A support and guiding device for an omnidirectional ceiling antenna, characterized by comprising:

[0008] The annular support part includes an upper end ring, a lower end ring, reinforcing ribs and at least three support rib strips;

[0009] The locking structure is arranged on the lower end ring and includes an extending part, a limiting surface, a U-shaped part and a clamping protrusion, which fits the low-frequency oscillator through elastic deformation;

[0010] The cantilever snap structure is arranged on the upper end ring and includes a holding unit and a deflecting unit for fixing the high-frequency oscillator.

[0011] In one embodiment, the support rib strips are linear or arc-shaped, the lower end ring is a transverse annular structure, and the reinforcing ribs are vertically connected to the lower end ring and are circular or polygonal.

[0012] In one embodiment, the extending part, the limiting surface, the U-shaped part and the clamping protrusion are connected in sequence. A protruding rib is arranged on the extending part, and the rib extends at least partially along the longitudinal direction. The limiting surface is an inclined section with a lower outer side and a higher inner side, and the clamping protrusion is arranged on the outer side of the U-shaped part along the longitudinal direction.

[0013] In one embodiment, the holding unit is hook-shaped or column-shaped. The column-shaped structure has a C-shaped configuration in a cross-section perpendicular to the longitudinal direction. The deflecting unit extends upward in a vertical direction or inclines 1° to 5° toward the center.

[0014] In one embodiment, the holding unit includes a guiding surface and a holding surface. The guiding surface is an inclined section with an angle of 25° to 35° with the vertical direction, and the holding surface is horizontally inwardly elongated or has an upward inclination angle of 1° to 10°.

[0015] In one embodiment, the support guiding device can be at least partially made of an elastically deformable plastic.

[0016] In one embodiment, the support guiding device can be made of one or more materials. The stiffness of the material of the annular support part is greater than that of the materials of the remaining areas, and the elastic deformability of the materials of the remaining areas is greater than that of the material of the annular support part.

[0017] In one embodiment, the annular support part, the locking structure and the cantilever snap structure of the support guiding device can all include a peripheral framework for support.

[0018] According to another aspect of the present invention, an omnidirectional ceiling antenna is provided. The omnidirectional ceiling antenna includes a high-frequency oscillator, a low-frequency oscillator, a horizontal PCB oscillator, a coaxial cable and the above-mentioned support guiding device. The support guiding device is fixed to the low-frequency oscillator (angle 150° - 160°) through the locking structure, and the cantilever snap structure clamps the high-frequency oscillator (diameter 43 - 44.5 mm) to achieve double fixation.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0020] Simplified assembly: The one-piece structure reduces the tolerance stack-up, and the assembly efficiency is increased by more than 30%; enhanced support: The elastic lock absorbs vibration energy, and the displacement of the high-frequency oscillator is reduced by 50%; performance optimization: The coaxiality error ≤ 0.1 mm, the radiation pattern fluctuation < 1 dB, and the intermodulation index is better than -150 dBc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : Three-dimensional structure diagram of the support and guiding device of the present invention;

[0022] Figure 2 : Schematic diagram of the annular support part in the support and guiding device of the present invention;

[0023] Figure 3 : Schematic diagram of the lock structure in the support and guiding device of the present invention;

[0024] Figure 4 : Schematic diagram of the cantilever buckle structure in the support and guiding device of the present invention;

[0025] Figure 5 : Overall assembly schematic diagram of the omnidirectional ceiling antenna (including high-frequency oscillator, low-frequency oscillator and support and guiding device).

[0026] Figure 6 : Schematic diagram of the second embodiment of the support and guiding device of the present invention.

[0027] In the figure: 10, support and guiding device; 11, annular support part; 111, upper end ring; 112, lower end ring; 113, reinforcing rib; 114, support rib; 12, lock structure; 121, extending branch; 1211, rib; 122, limiting surface; 123, U-shaped branch; 124, clamping protrusion; 13, cantilever buckle structure; 131, holding unit; 1311, guiding surface; 1312, holding surface; 132, deflecting unit; 20, high-frequency oscillator; 30, low-frequency oscillator; 40, horizontal PCB oscillator; 50, coaxial cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0030] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0031] In the present application, unless otherwise clearly defined and limited, if there are terms such as "mounted", "connected", "coupled", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly defined and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0033] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0034] Please refer to Figures 1-5 , the first embodiment provided by the present invention: a support and guiding device 10 for an omnidirectional ceiling antenna, characterized by comprising: a ring-shaped support portion 11, including an upper end ring 111, a lower end ring 112, a reinforcing rib 113 and at least three support rib strips 114; a locking structure 12, disposed on the lower end ring 113, including an extending portion 121, a limiting surface 122, a U-shaped portion 123 and a clamping protrusion 124, which fits the low-frequency oscillator 30 through elastic deformation; a cantilever snap structure 13, disposed on the upper end ring 111, including a holding unit 131 and a deflecting unit 132, for fixing the high-frequency oscillator 20.

[0035] Furthermore, the support rib strips 114 are linear or arc-shaped, the lower end ring 112 is a transverse ring structure or a hexagonal structure, and the reinforcing rib 113 is perpendicularly connected to the lower end ring 112 and is circular or polygonal.

[0036] In one embodiment, the extending portion 121, the limiting surface 122, the U-shaped portion 123 and the clamping protrusion 124 are connected in sequence. A protruding rib 1211 is provided on the extending portion 121, and the rib 1211 extends at least partially along the longitudinal direction. The limiting surface 122 is an inclined section with a lower outer side and a higher inner side, the width of the limiting surface 122 is greater than that of the U-shaped portion 123, and the clamping protrusion 124 is disposed on the outer side of the U-shaped portion 123 along the longitudinal direction.

[0037] In some embodiments, the limiting surface 122' of the locking structure 12 is concave arc-shaped and is adapted to the outer wall radian of the low-frequency oscillator 30, further improving the fitting stability. The locking structure 12 can be replaced by riveting fixation, and the elastic plastic can be replaced by a PC / ABS composite material.

[0038] In one embodiment, the holding unit 131 is hook-shaped or column-shaped, the column-shaped has a C-shaped structure in the cross-section perpendicular to the longitudinal direction, and the deflecting unit 132 extends upward along the vertical direction or inclines 1° to 5° toward the center.

[0039] In one embodiment, the holding unit 131 includes a guiding surface 1311 and a holding surface 1312. The guiding surface 1311 is an inclined cutting surface having an angle of 25° to 35° with the vertical direction, and the holding surface 1312 is horizontally inwardly elongated or has an upward inclination angle of 1° to 10°.

[0040] In one embodiment, the support guiding device 10 can be at least partially made of an elastically deformable plastic.

[0041] In one embodiment, the support guiding device 10 can be made of one or more materials, wherein the stiffness of the material of the annular support portion 11 is greater than that of the materials of the remaining regions, and the elastic deformability of the materials of the remaining regions is greater than that of the material of the annular support portion 11.

[0042] In one embodiment, the annular support portion 11, the locking structure 12, and the cantilever snap structure 13 of the support guiding device 10 can all include an outer peripheral skeleton for support.

[0043] According to another aspect of the present invention, an omnidirectional ceiling antenna is provided. The omnidirectional ceiling antenna includes a high-frequency oscillator 20, a low-frequency oscillator 30, a horizontal PCB oscillator 40, a coaxial cable 50, and the above-mentioned support guiding device 10. The support guiding device 10 is fixed to the low-frequency oscillator 30 (angle 150° to 160°) through the locking structure 12, and the cantilever snap structure 13 snaps onto the high-frequency oscillator 20 (diameter 43 to 44.5 mm) to achieve double fixation.

[0044] The support guiding device 10 is integrally injection-molded with a PA66 material. The support rib 114 is designed in an arc shape, and the diameter of the lower end ring 113 is 44 mm. During installation, the locking structure 12 is snapped into the slot hole of the low-frequency oscillator 30, and elastic deformation makes it closely adhere to the inner and outer walls; the high-frequency oscillator 20 is pressed down along the guiding surface 1311 of the cantilever snap 13 to be snapped onto the holding surface 1312 to complete the fixation.

[0045] Figure 6 A support guiding device 10' according to a second embodiment of the present invention is shown. The annular support portion 11' is made of a PC / ABS composite material. The support ribs 114' intersect with each other, presenting a pairwise independent intersection shape or a multiple intersection shape among multiple support bars, for strengthening the structural strength.

[0046] The beneficial effects of the present invention are:

[0047] Simplified assembly: The one-piece structure reduces tolerance stacking, and the assembly efficiency is increased by more than 30%; enhanced support: The elastic lock absorbs vibration energy, and the displacement of the high-frequency oscillator is reduced by 50%; performance optimization: The coaxiality error ≤ 0.1 mm, the radiation pattern fluctuation < 1 dB, and the intermodulation index is better than -150 dBc.

[0048] The specific embodiments of the invention have been described above. Other embodiments are within the scope of the appended claims. The terms "exemplary", "example", etc. used throughout this specification mean "serving as an example, instance, or illustration", and do not mean "preferred" or "advantageous" over other embodiments. For the purpose of providing an understanding of the described technology, the detailed description includes specific details. However, these technologies can be implemented without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described embodiments.

[0049] The optional implementation manners of the embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation manners. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0050] The above description of the content of this specification is provided to enable any ordinary person skilled in the art to implement or use the content of this specification. For ordinary persons skilled in the art, various modifications to the content of this specification are obvious, and the general principles defined herein can also be applied to other variations without departing from the protection scope of the content of this specification. Therefore, the content of this specification is not limited to the examples and designs described herein, but is consistent with the broadest scope that conforms to the principles and novel features disclosed herein.

Claims

1. A support and guide device for an omnidirectional ceiling antenna, characterized in that: include: An annular support portion, comprising an upper end ring, a lower end ring, a reinforcing rib and at least three supporting ribs; The locking structure is arranged on the lower end ring, including an extension part, a limiting surface, a U-shaped part and a clamping protrusion, and fits the low-frequency vibrator through elastic deformation; The cantilever buckle structure is arranged on the upper end ring, and comprises a retaining unit and a deflecting unit, and is used for fixing the high-frequency vibrator.

2. A supporting and guiding device for an omnidirectional ceiling antenna according to claim 1, characterized in that: The supporting ribs are in a straight line or an arc shape, the lower end ring is a transverse ring structure, and the reinforcing ribs are vertically connected to the lower end ring and are circular or polygonal.

3. A supporting and guiding device for an omnidirectional ceiling antenna according to claim 1, characterized in that: The extension section, the limiting surface, the U-shaped section and the clamping protrusion are connected in sequence. The extension section is provided with protruding ribs, and the ribs extend at least partially along the longitudinal direction. The limiting surface is an oblique section with a low outside and a high inside. The clamping protrusion is arranged on the outside of the U-shaped section along the longitudinal direction.

4. The supporting and guiding device for an omnidirectional ceiling antenna according to claim 1, characterized in that: The holding unit is hook-shaped or column-shaped, and the column-shaped structure has a C-shaped structure in a cross section perpendicular to the longitudinal direction. The deflection unit is elongated upward in the vertical direction or inclined 1° to 5° toward the center.

5. The supporting and guiding device for an omnidirectional ceiling antenna according to claim 4, characterized in that: The holding unit comprises a guiding surface and a holding surface. The guiding surface is a chamfered surface with an angle of 25° to 35° with respect to the vertical direction, and the holding surface is horizontally elongated inward or has an upward inclination angle of 1° to 10°.

6. The supporting and guiding device for an omnidirectional ceiling antenna according to claim 1, characterized in that: The supporting and guiding device can be manufactured at least partially from an elastically deformable plastic.

7. The supporting and guiding device for an omnidirectional ceiling antenna according to claim 1, characterized in that: The supporting and guiding device may be made of one or more materials, wherein the rigidity of the material of the annular supporting portion is greater than that of the material of the remaining area, and the elastic deformability of the material of the remaining area is greater than that of the material of the annular supporting portion.

8. The supporting and guiding device for an omnidirectional ceiling antenna according to claim 1, characterized in that: The annular supporting portion, the locking structure and the cantilever snap-in structure of the supporting and guiding device may all include a peripheral skeleton that plays a supporting role.

9. An omnidirectional ceiling antenna, comprising a high-frequency vibrator, a low-frequency vibrator, a horizontal PCB vibrator, a coaxial cable and the supporting and guiding device described above, wherein the supporting and guiding device is fixed to the low-frequency vibrator (angle 150°~160°) through a locking structure, and the cantilever snap-on structure buckles the high-frequency vibrator (diameter 43~44.5mm) to achieve double fixation.

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