Internet of Things antenna contraction device

Abstract

The utility model relates to an Internet of Things antenna contraction device, and the device comprises a central shaft which is fixedly provided with one end of an antenna; the planet shaft can rotate around the center shaft by a certain fixed radius, and the antenna extends out of the center shaft and then is wound on the planet shaft and the center shaft in a runway shape in the clock direction opposite to the rotation direction of the planet shaft; an annular groove is formed in the upper surface of the closed bottom plate, the center shaft can rotate in the center position of the annular groove in the upper surface of the closed bottom plate, and the lower end of the planet shaft moves in the annular groove. The utility model also provides a corresponding antenna contraction method. According to the antenna contraction device capable of controlling the telescopic length of the Internet of Things antenna, the antenna contraction structure is compact, the occupied space is small, the antenna winding mode is simple, convenient and flexible, and therefore the length of the antenna is smoothly and stably controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antenna telescopic connection, in particular to an Internet of Things antenna contraction device. BACKGROUND

[0002] With the rapid development of Internet of Things technology, the requirements for the computing power of equipment and the stable transmission of network are becoming higher and higher. Among them, the design of Internet of Things antenna has the most direct influence on the stability and effect of Internet of Things network transmission. Especially in the use scenarios of small transmission devices such as remote monitoring, smart home, industrial automation, etc., according to the different use frequency bands, the size of the antenna is different, and there is a demand for a longer antenna in some scenarios, thereby bringing challenges to the design of small devices.

[0003] In the existing mobile terminal of Internet of Things industry, for the longer matching antenna, the external antenna is mostly used, so there are the following shortcomings:

[0004] On the one hand, the external antenna leads to an overall envelope that is too large, the use scene is not flexible, and it is limited by space; at the same time, since the antenna is exposed to the external environment and the structural stability is not strong, there is a risk of antenna damage; in addition, the length of the external antenna is in a fixed state, so it cannot adapt to special frequency bands such as 240M, 320M frequency bands.

[0005] On the other hand, some mechanical antenna contraction devices currently use master-slave gear methods, such as winding a thicker antenna therein, which often occupies more internal space of the device; or using a complex winding method, which may affect the service life of the antenna.

[0006] Therefore, in this background, in view of the characteristics of the existing technology that the antenna is external, the contraction device occupies a large space, and the winding method is complex, how to provide an antenna contraction device that can control the telescopic length of the antenna, so that the antenna contraction structure is compact and occupies a small space, the antenna winding method is simple and flexible, thereby smoothly and stably controlling the length of the antenna, is a technical problem to be solved. SUMMARY

[0007] In view of the above problems of the prior art, the present application provides an Internet of Things antenna contraction device to provide an antenna contraction device that can control the telescopic length of the antenna, so that the antenna contraction structure is compact and occupies a small space, the antenna winding method is simple and flexible, thereby smoothly and stably controlling the length of the antenna.

[0008] To achieve the above purpose, the first aspect of the present application provides an Internet of Things antenna contraction device, comprising:

[0009] a center shaft, the center shaft is rotatably fixed at the center position of the device;

[0010] a planet shaft, which can rotate around the center shaft at a fixed radius, the antenna being fixed on the planet shaft and wound in a clockwise direction opposite to the rotation direction of the planet shaft;

[0011] a closed bottom plate, the upper surface of which has an annular groove, the center shaft being able to rotate at the center position of the annular groove on the upper surface of the closed bottom plate, the lower end of the planet shaft being movable in the annular groove.

[0012] As described above, by using the planet shaft based on the principle of planetary motion, the antenna is fixed on the planet shaft and wound around the outer circle of the planet shaft, the planet shaft uses sliding friction to wind the antenna into a runway type, realizing the contraction and release of the antenna. Compared with the traditional linear or rotary telescopic mechanism, the planet shaft can store or deploy the antenna in a more compact manner; the runway type winding can significantly reduce the required longitudinal space, making the overall structure more compact. In addition, the rotation mode of the planet shaft can also provide a smoother operation experience.

[0013] As a possible implementation manner of the first aspect, the planet shaft comprises:

[0014] a fixed block, which has a cylindrical upper part, a round shaft being extended downward at the center of the lower bottom surface of the cylindrical upper part, and a vertically arranged spring being arranged outside the round shaft;

[0015] wherein the lower part of the round shaft has an annular recess;

[0016] a locking block, which has a cylindrical upper part and a cylindrical lower part with a smaller radius than the cylindrical upper part, the cylindrical lower part having an annular recess near the bottom surface of the cylindrical upper part, which can wind the antenna;

[0017] wherein the central part of the locking block has a vertically through hole, the diameter of the through hole being the same as that of the round shaft of the fixed block, and the round shaft being inserted into the through hole from above;

[0018] wherein the side surface of the cylindrical lower part has a pair of opposite through holes, the position of the through holes corresponding to the annular recess of the lower part of the round shaft of the fixed block when the spring is compressed;

[0019] wherein a pair of steel balls are respectively embedded in the through holes, the steel balls being able to enter the annular recess of the lower part of the round shaft under the action of an external force when the spring is compressed.

[0020] As described above, a steel ball locking device is obtained by the fixed block and the locking block, which can be placed in an embeddable track or other device to play a locking control and fix the length of the antenna.

[0021] As one possible implementation of the first aspect, the cylindrical upper part of the planetary axis is rigidly connected to the lower edge of a circular knob, the diameter of which is larger than that of the central axis, and is arranged coaxially with the central axis by a rigid connection.

[0022] The planetary axis is rotated via a circular knob, minimizing mechanical components and saving space and materials.

[0023] As one possible implementation of the first aspect, the cylindrical upper part of the planetary shaft is rigidly connected to the lower edge of a circular knob, and the center of the cylindrical upper part of the planetary shaft is located at the edge of the circular knob;

[0024] The diameter of the circular knob is larger than that of the central axis, and it is arranged coaxially with the central axis through a rigid connection;

[0025] The central shaft, planetary shaft, enclosed base plate, battery, and circuit board are housed in the outer casing.

[0026] The top surface of the housing has an opening larger than the diameter of the circular knob, which is mounted from below the top surface of the housing and is rigidly connected to the upper cylindrical part of the planetary shaft, which is confined inside the housing.

[0027] As described above, an outer casing protects the antenna retraction device and necessary electronic components. Exposed circular knobs reduce unnecessary force transmission components, saving space and materials.

[0028] As one possible implementation of the first aspect, the closed base plate has a groove lock on the top surface of the closed base plate on both sides of the annular groove, the groove lock being a gear-shaped guide rail; the horizontal height position of the groove lock is the same as that of the steel ball at the lower cylindrical part of the locking block; when the spring is in its natural state, the steel ball is pushed out from the opening and is confined in the gear-shaped groove of the groove lock.

[0029] As described above, the position of the planetary axis is locked by the groove lock, thereby controlling the length of the antenna and fixing the retracted antenna.

[0030] As one possible implementation of the first aspect, the upper cylindrical part of the locking block has a cross-shaped through-type upward notch;

[0031] The lower surface edge of the cylindrical upper part of the fixing block has a downwardly extending protrusion at the position corresponding to the notch of the locking block, and the downwardly extending protrusion of the lower surface edge of the fixing block can be fitted into the cross-shaped notch of the locking block.

[0032] From the above, through the upper and lower embedded fixing block and locking block, the spring cannot be affected by horizontal force to produce torsion, so that the fixing block is twisted relative to the locking block.

[0033] As a possible implementation of the first aspect, the battery and the circuit board are placed below the closed bottom plate, and the center shaft, the planetary shaft, the closed bottom plate, the battery and the circuit board are accommodated in the shell.

[0034] From the above, the shell is used to protect the antenna retracting device and necessary electronic elements.

[0035] As a possible implementation of the first aspect, the antenna is connected to an external antenna interface. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of the internal structure of the Internet of Things antenna retracting device provided by the embodiments of the present application;

[0037] Figure 2 is a rendering diagram of the external appearance of the Internet of Things antenna retracting device provided by the embodiments of the present application;

[0038] Figure 3 is a cross-sectional view of the knob, the center shaft and the planetary shaft of the Internet of Things antenna retracting device provided by the embodiments of the present application;

[0039] Figure 4 is a cross-sectional view of the Internet of Things antenna retracting device provided by the embodiments of the present application;

[0040] Figure 5 is a cross-sectional view of the Internet of Things antenna retracting device provided by the embodiments of the present application;

[0041] Figure 6 is a three-dimensional part diagram of the closed bottom surface provided by the embodiments of the present application;

[0042] Figure 7 is a three-dimensional part diagram of the knob, the center shaft and the planetary shaft provided by the embodiments of the present application;

[0043] Figure 8 is a three-dimensional part diagram of the shell provided by the embodiments of the present application;

[0044] Figure 9 is a three-dimensional part diagram of the bottom of the shell provided by the embodiments of the present application;

[0045] Figure 10 is a three-dimensional part diagram of the antenna provided by the embodiments of the present application;

[0046] Figure 11 is a three-dimensional part diagram of the locking block provided by the embodiments of the present application.

[0047] It should be understood that the size and shape of each block in the structural schematic diagram above are only for reference, and should not constitute an exclusive interpretation of the embodiments of the present application. The relative position and inclusion relationship between the blocks presented in the structural schematic diagram are only used to represent the structural association between the blocks, and do not limit the physical connection mode of the embodiments of the present application. DETAILED DESCRIPTION

[0048] The technical solutions provided by the present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the system structure and service scenarios provided in the embodiments of the present application are mainly used to illustrate possible implementation modes of the technical solutions of the present application, and should not be interpreted as the only limitation of the technical solutions of the present application. Those skilled in the art can know that the technical solutions provided by the present application are also applicable to similar technical problems as the system structure evolves and new service scenarios appear.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. If there is any inconsistency, the meaning described in the specification or derived from the content described in the specification shall prevail. In addition, the terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0050] The Internet of Things antenna contraction scheme provided by the embodiments of the present application can fix the antenna on the central axis by using the planetary axis based on the principle of planetary motion, so that the antenna surrounds the outer ring of the planetary axis. The planetary axis uses sliding friction to wind the antenna into a runway type, realizing the contraction and release of the antenna. This way can provide an antenna contraction device that can control the extension length of the antenna, so that the antenna contraction structure is compact and occupies small space, and the antenna winding method is simple and flexible, thereby smoothly and stably controlling the length of the antenna. The embodiments of the present application can be applied to various industrial, civil and other fields of remote monitoring, smart home, industrial automation and other Internet of Things transmission equipment, such as Internet of Things mobile terminals. The embodiments of the present application will be described in detail below with reference to the drawings.

[0051] The first embodiment of the present application provides an Internet of Things antenna contraction device. The technical solutions in the present application will be described in detail below with reference to the drawings.

[0052] As shown in Figure 1 , 2 The volume of the embodiment of the present application is about 60mmx60mmx30mm, which is composed of a closed bottom surface 1, a locking mechanism 2, an antenna 3, a battery 4, a shell top, a shell bottom 6 and a circuit board 7. The locking mechanism 2 is composed of a knob 8, a central axis 9 and a planetary axis 10 (as shown in Figure 3As shown in the figure). With the position of the knob as the top, the position of the shell bottom as the bottom, the following will be introduced in the order from top to bottom of the IoT antenna retracting device and the IoT antenna retracting method provided by the embodiment of the application.

[0053] As shown in the figure Figure 1 , 3 The knob 8 has a flat cylindrical appearance, and the upper surface has an upward strip-shaped protrusion in the horizontal diameter direction; the lower part of the knob 8 is rigidly connected with the central shaft 9 and the planetary shaft 10.

[0054] As shown in the figure Figures 3-5 The diameter of the knob 8 is greater than the central shaft 9, and is coaxially arranged with the central shaft 9 through rigid connection. The center of the lower part of the central shaft 9 has a downward extending protrusion 15.

[0055] As shown in the figure Figure 3 , 7 The planetary shaft 10 is composed of a fixed block and a locking block. The fixed block has a cylindrical upper part, and a circular shaft 11 extends downward at the center of the lower bottom surface of the cylindrical upper part, and a coaxial spring 13 is arranged vertically outside the circular shaft; wherein the lower part of the circular shaft 11 has a pair of recesses.

[0056] Optionally, the lower part of the circular shaft 11 has an annular recess 16; the end of the lower part of the circular shaft 11 uses a chamfering process.

[0057] Optionally, the upper end of the spring 13 is fixed to the lower surface of the cylindrical upper part of the fixed block, and the lower end of the spring 13 is fixed to the upper surface of the internal recess of the cylindrical upper part of the locking block.

[0058] Optionally, the planetary shaft 10 is made of engineering plastic material, which can ensure stability and isolate signal interference.

[0059] The cylindrical upper part of the fixed block is rigidly connected to the lower part of the edge of the knob 8, and the center of the cylindrical upper part of the fixed block is located at the edge of the knob 8.

[0060] The lower surface edge of the cylindrical upper part of the fixed block has a plurality of downward extending protruding parts 12 evenly distributed along the cylindrical axis.

[0061] As shown in the figure Figure 3 , 11 The planetary shaft 10 also has a locking block. The locking block has a cylindrical upper part and a cylindrical lower part with a smaller radius than the cylindrical upper part, and the cylindrical lower part has an annular recess 17 near the position of the bottom surface of the cylindrical upper part, which can wind the antenna.

[0062] The center part of the locking block has a vertical through hole, the diameter of the through hole is the same as the diameter of the round shaft 11 of the fixing block, the round shaft 11 is inserted into the through hole from above;

[0063] The side of the cylindrical lower part has a pair of opposite openings 21, the openings are located corresponding to the pair of recesses 16 of the lower part of the round shaft of the fixing block when the spring 12 is compressed;

[0064] A pair of steel balls 14 are respectively embedded in the openings, the steel balls 14 can enter the annular recess 16 of the lower part of the round shaft under the action of an external force when the spring 13 is compressed.

[0065] The cylindrical upper part of the locking block has a cross-shaped upward notch, the downward protruding part 12 of the lower surface of the fixing block can be embedded in the cross-shaped notch of the locking block.

[0066] As shown in Figure 1 , 4 , 5, 6, the upper surface of the closed bottom plate 1 has an annular groove 19, the lower end of the round shaft 11 is movable in the annular groove 19; the protrusion 15 of the lower part of the center shaft can rotate at the tubular protrusion of the center position of the annular groove of the upper surface of the closed bottom plate.

[0067] The top surface of the closed bottom plate on both sides of the annular groove 19 of the closed bottom plate has a gear-shaped guide rail 20, the gear-shaped guide rail 20 corresponds to the openings 21 of the cylindrical lower part of the locking block in the horizontal direction, when the spring is in a state without external force, the steel balls 14 are ejected from the openings 21 and are limited in the gear-shaped grooves of the gear-shaped guide rail.

[0068] As shown in Figure 1 , 2 , 4, 5, the center shaft 9, the planet shaft 10, the closed bottom plate 1, the battery and the circuit board 7 are accommodated in the shell top and the shell bottom 6;

[0069] As shown in Figure 8 , 9 , the top surface of the shell top has an opening larger than the diameter of the round knob, the knob 8 is installed from the lower direction of the top surface of the shell top, and the locking mechanism 2 is limited inside the shell top and the shell bottom 6.

[0070] As shown in Figure 1 , 2 , 5, 10, the antenna is fixed on the planet shaft and is wound in the clock direction opposite to the rotation direction of the planet shaft; the antenna is connected to the external antenna interface after being extended from the locking mechanism.

[0071] Optionally, the metal wire material of the antenna can be changed according to actual antenna performance requirements.

[0072] In the use of the present embodiment, first, according to the Figure 1 The device is assembled as shown.

[0073] Press the knob 7 and rotate it counterclockwise, so that the spring 13 is compressed, the cross-shaped notch of the locking block is tightly fitted with the downward protruding part 12 of the lower surface edge of the fixed block, the circular shaft 11 moves downward to the annular groove 19 of the closed bottom surface, so that the annular recess 16 of the circular shaft 11 is aligned with the opening 21 of the locking block, so that the steel ball 14 can enter the annular recess 16. The antenna is wound clockwise around the planet shaft and counterclockwise around the central shaft, so that the antenna is wound in a racetrack shape between the planet shaft and the central shaft, reducing the antenna extension length.

[0074] When it is necessary to increase the antenna extension length, press the knob 7 and rotate it clockwise.

[0075] When it is necessary to lock the current antenna extension length, release the knob 7, the spring 13 is not under external force, the fixed block circular shaft 11 is lifted upward, so that the annular recess 16 is higher than the opening 21 of the locking block, so that the steel ball 14 is removed from the opening 21 and locked in the gear-shaped groove of the gear-shaped guide rail 20 of the closed bottom plate.

[0076] In the description and claims, the words "first", "second", "third", etc. or module A, module B, module C, etc. similar terms are only used to distinguish similar objects, and do not represent a specific order of the objects. It can be understood that the specific order or sequence can be interchanged as permitted, so that the application described herein can be implemented in an order other than that illustrated or described herein.

[0077] In the above description, the labels indicating steps, such as S110, S120, etc., do not necessarily mean that the steps are executed in this order, and the order of the steps can be interchanged or executed simultaneously as permitted.

[0078] The term "comprising" used in the description and claims should not be interpreted as limited to the listed elements; it does not exclude other elements or steps. Therefore, it should be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. Therefore, the expression "a device comprising A and B" should not be limited to a device only consisting of components A and B.

[0079] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but can refer to different embodiments. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0080] It is noted that the foregoing are merely preferred embodiments of, and the technical principles applied to, the present application. It can be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, and that various obvious changes, modifications and replacements can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and all of the embodiments belong to the protection scope of the present application.

Claims

1. An Internet of Things (IoT) antenna retraction device, characterized in that, include: A central shaft, which is rotatably fixed at the center of the device; A planetary axis, which can rotate around the central axis with a certain fixed radius, and the antenna is fixed on the planetary axis and wound in a clockwise direction opposite to the rotation direction of the planetary axis; A closed base plate has an annular groove on its upper surface. The central shaft can rotate at the center of the annular groove on the upper surface of the closed base plate, and the lower end of the planetary shaft can move within the annular groove.

2. The apparatus according to claim 1, characterized in that, The planetary axis includes: A fixing block having a cylindrical upper part, a circular shaft extending downward from the center of the lower bottom surface of the cylindrical upper part, and a coaxial spring arranged vertically on the outside of the circular shaft; A locking block having a cylindrical upper part and a cylindrical lower part with a radius smaller than that of the cylindrical upper part, wherein the cylindrical lower part has an annular recess near the bottom surface of the cylindrical upper part for wrapping the antenna. The locking block has a vertical through hole at its center, and the diameter of the circular shaft of the fixing block is the same as that of the through hole. The circular shaft is inserted into the through hole from above. The lower part of the cylinder has a pair of through holes on its side, and a pair of steel balls are embedded in each of the holes.

3. The apparatus according to claim 2, characterized in that, The lower part of the circular shaft has a pair of symmetrical recesses; the position of the opening corresponds to the pair of symmetrical recesses on the lower part of the circular shaft of the fixing block when the spring is compressed; the steel ball can enter the pair of symmetrical recesses on the lower part of the circular shaft under the action of external force when the spring is compressed.

4. The apparatus according to claim 2, characterized in that, The lower part of the circular shaft has an annular recess; the position of the opening corresponds to the annular recess at the lower part of the circular shaft of the fixing block when the spring is compressed; the steel ball can enter the annular recess at the lower part of the circular shaft under the action of external force when the spring is compressed.

5. The apparatus according to any one of claims 3-4, characterized in that, The upper cylindrical part of the planetary axis is rigidly connected to the lower edge of a circular knob. The diameter of the circular knob is larger than that of the central axis, and it is arranged coaxially with the central axis through a rigid connection.

6. The apparatus according to any one of claims 3-4, characterized in that, The upper cylindrical part of the planetary shaft is rigidly connected to the lower edge of a circular knob, and the center of the upper cylindrical part of the planetary shaft is located at the edge of the circular knob; The diameter of the circular knob is larger than that of the central axis, and it is arranged coaxially with the central axis through a rigid connection; The central shaft, planetary shaft, enclosed base plate, battery, and circuit board are housed in the outer casing. The top surface of the housing has an opening larger than the diameter of the circular knob, which is mounted from below the top surface of the housing and is rigidly connected to the upper cylindrical part of the planetary shaft, which is confined inside the housing.

7. The apparatus according to claim 5, characterized in that, The closed base plate has groove locks on the top surface of the closed base plate on both sides of the annular groove. The groove locks are gear-shaped guide rails. The horizontal height of the groove locks is the same as that of the steel ball at the lower cylindrical part of the locking block. When the spring is in its natural state, the steel ball is pushed out from the opening and is confined in the gear-shaped groove of the groove lock.

8. The apparatus according to claim 5, characterized in that, The upper cylindrical part of the locking block has a cross-shaped, upward-facing notch. The lower surface edge of the cylindrical upper part of the fixing block has a downwardly extending protrusion at the position corresponding to the notch of the locking block, and the downwardly extending protrusion of the lower surface edge of the fixing block can be fitted into the cross-shaped notch of the locking block.

9. The apparatus according to claim 1, characterized in that, The battery and circuit board are placed below the enclosed base plate, and the central shaft, planetary shaft, enclosed base plate, battery and circuit board are housed in the outer casing.

10. The apparatus according to claim 9, characterized in that, The antenna is connected to an external antenna interface.

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