Antenna and communication device

Abstract

The embodiment of the utility model relates to the technical field of communication, in particular to an antenna and communication equipment. The wire is spirally wound on the magnetic core, so that the wire forms a first winding wire and a second winding wire which are connected with each other, and the screw pitch of the first winding wire is smaller than that of the second winding wire; the connecting piece is connected to the first winding wire, and the connecting piece is used for being connected with external equipment. Through the above mode, the antenna has the characteristics of strong overcurrent capability and simple structure.

Description

Technical Field

[0001] The embodiments of the utility model relate to the field of communication technology, and in particular to an antenna and a communication device. Background Art

[0002] An antenna is a device used to receive or send electromagnetic waves. It is widely used in communications, radar, near field communications (NFC), radio, satellite communications, and other fields. The antenna includes a magnetic core, a wire, a clamping assembly, and a connector. The magnetic core includes a main body and an end. The main body is connected to the end. The wire is arranged around the main body. The clamping assembly is arranged at the end. The clamping assembly and the end jointly clamp the wire end of the wire. The connector is arranged at the clamping assembly. When the wire is energized, the current flows into the circuit board through the wire end, the clamping assembly, and the connector in sequence.

[0003] However, in the process of implementing the embodiments of the present utility model, the inventors found that the antenna has a complex structure and poor current carrying capacity. Utility Model Content

[0004] An embodiment of the utility model provides an antenna, which solves the problems of complex structure and poor current carrying capacity.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an antenna, including a magnetic core; a conductive wire, spirally wound on the magnetic core so that the conductive wire forms a first winding and a second winding connected to each other, and the pitch of the first winding is smaller than the pitch of the second winding; a connecting member, connected to the first winding, and the connecting member is used for connecting to an external device.

[0006] Optionally, the connecting member has a first surface; the first winding includes a plurality of coils which are sequentially connected end to end and arranged in parallel, and the first surface is attached to a connecting surface formed by connecting the outer coils of the plurality of coils.

[0007] Optionally, a cross-section of the first winding or the second winding along the spiral direction is circular, square, waist-shaped or elliptical.

[0008] Optionally, the magnetic core is in the shape of a cube.

[0009] Optionally, the magnetic core is provided with a groove, the groove is located at a corner of the magnetic core, and the groove penetrates the magnetic core along the first winding toward the second winding.

[0010] Optionally, the number of the first windings and the connecting members is two, one first winding corresponds to one connecting member, and the second winding is located between the two first windings.

[0011] Optionally, a first protrusion and a second protrusion are protruded from an outer surface of the magnetic core, the first protrusion and the second protrusion are arranged at intervals along a first direction, and the first winding is located between the first protrusion and the second protrusion.

[0012] Optionally, the second protruding portion is provided with an avoidance groove, and the end wire of the second winding passes through the avoidance groove and then is connected to the first winding.

[0013] Optionally, the first protrusion and the second protrusion are both ring-shaped, and are sleeved on the magnetic core.

[0014] In order to solve the above technical problem, a technical solution adopted by the present invention is: to provide a communication device, including the above antenna.

[0015] The beneficial effects of the embodiments of the present application are as follows: in the embodiments of the present application, compared with the prior art, the present invention omits the clamping assembly, and a wire is spirally wound around the magnetic core so that the wire forms a first winding and a second winding that are connected to each other, the pitch of the first winding is smaller than the pitch of the second winding, a connecting member is connected to the first winding, and the connecting member is used for connecting to an external device, the first winding and the second winding are formed by spirally winding the wire around the magnetic core, so that the first winding and the second winding are directly connected, while the prior art forms an indirect connection through clamping, and therefore, the antenna of the present invention has a stronger current carrying capacity than the prior art and a simpler structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0017] Figure 1 It is a view of an antenna provided by an embodiment of the utility model;

[0018] Figure 2 It is a view of antennas of other embodiments provided by the utility model;

[0019] Figure 3 is a flow chart of manufacturing an antenna according to an embodiment of the utility model;

[0020] Figure 4 is a further flow chart of step S3 of the embodiment of the utility model;

[0021] Figure 5 It is another flow chart of manufacturing an antenna according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] 100. Antenna;

[0024] 10. conductor; 101. first winding; 102. second winding;

[0025] 20, magnetic core; 20a, groove; 20b, first protrusion; 20c, second protrusion; 20d, avoidance groove;

[0026] 30. Connecting member; 30a. First surface; 30b. Second surface. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0029] In order to better and more conveniently explain the antenna, a first direction x, a second direction z, and a third direction y that are perpendicular to each other are introduced.

[0030] See also Figure 1 The antenna 100 includes a wire 10, a magnetic core 20 and a connector 30. The wire 10 is spirally wound around the magnetic core 20 to form a winding, and the winding is connected to an external device through the connector 30.

[0031] For the above-mentioned wire 10, the wire 10 is spirally wound on the magnetic core 20 to form a first winding 101 and a second winding 102, the pitch of the first winding 101 is smaller than the pitch of the second winding 102, and the connector 30 is connected to the first winding 101. It is worth noting that there are two first windings 101 and two connectors 30, one first winding 101 corresponds to one connector 30, and the second winding 102 is located between the two first windings 101. Among them, the first direction x is the same as the direction of the first winding 101 toward the second winding 102 or the direction of the second winding 102 toward the first winding 101.

[0032] The first winding 101 satisfies: C=A / b, wherein C is the number of turns of the first winding 101, A is the width of the connecting member 30 along the first direction x, and b is the width of the first winding 101 along the first direction x. Exemplarily, the width A of the connecting member 30 along the first direction x is 0.5 mm, and the width b of the first winding 101 along the first direction x is 0.1 mm, so the number of turns of the first winding 101 is 5.

[0033] The first winding 101 comprises a plurality of windings connected end to end and arranged in parallel, and the outer windings of the plurality of windings are connected to form a connection surface, and the connector 30 is connected to the first winding 101 via the connection surface. Preferably, the connection surface is a plane.

[0034] In some embodiments, the cross-section of the first winding 101 or the second winding 102 along the spiral direction is circular, square, waist-shaped or elliptical.

[0035] For the magnetic core 20, see Figure 1 , the magnetic core 20 is a cube. When the conductor 10 is spirally wound on the magnetic core 20, the projection of the first winding 101 or the second winding 102 along the first direction x is a square. The magnetic core 20 is a ferrite material or a composite material of ferrite. For example, the magnetic core 20 is formed by sintering ferrite powder, or by injection molding a resin mixture containing ferrite powder.

[0036] In some embodiments, the magnetic core 20 is provided with a groove 20a, which is located at a corner of the magnetic core 20 and passes through the magnetic core 20 along the first winding 101 toward the second winding 102. When the wire 10 is spirally wound around the magnetic core 20, the edge of the magnetic core 20 is lowered to cut the wire 10.

[0037] For the above-mentioned connector 30, see Figure 1 The connecting member 30 is in the shape of a thin plate. Along the second direction z, the connecting member 30 has a first surface 30a and a second surface 30b that are oppositely disposed. The first surface 30a of the connecting member 30 is attached to the connecting surface of the first winding 101 .

[0038] In some embodiments, see Figure 2 The outer surface of the magnetic core 20 protrudes with a first protrusion 20b and a second protrusion 20c, the first protrusion 20b and the second protrusion 20c are arranged at intervals along the first direction x, and the first winding 101 is located between the first protrusion 20b and the second protrusion 20c. The first protrusion 20b and the second protrusion 20c are used to limit the movement of the first winding 101 along the first direction x, thereby reducing the movement of the winding along the first direction x.

[0039] In some embodiments, the second protrusion 20c is provided with an avoidance groove 20d, such as Figure 1 As shown. The end wire of the second winding 102 passes through the avoidance groove 20d and is connected to the first winding 101. Preferably, the avoidance groove 20d is opened along the direction of spiral winding, thereby reducing the difficulty of winding the wire 10. Preferably, the first protrusion 20b and the second protrusion 20c are both annular, and the first protrusion 20b and the second protrusion 20c are sleeved on the magnetic core 20.

[0040] The antenna 100 is manufactured by the following manufacturing method. Figure 3 The manufacturing method of the antenna 100 of the utility model comprises the following steps:

[0041] Step S1: providing a magnetic core 20 and a cable, wherein the cable comprises a protective sleeve and a conductor 10, wherein the protective sleeve is sleeved on the conductor 10;

[0042] Step S2: providing a winding device, the winding device drives the cable to be spirally wound on the magnetic core 20, so that the cable forms a first winding to be processed and a second winding 102, wherein the pitch of the first winding to be processed is smaller than the pitch of the second winding 102;

[0043] Step S3: providing a processing device, wherein the processing device processes the protective cover of the first winding to be processed so that the wire of the first winding to be processed is exposed to form a first winding 101, thereby obtaining an antenna to be dip-tinned;

[0044] Step S4: performing a coating process on the first winding 101 of the antenna to be coated to obtain the antenna 100.

[0045] After the first winding 101 is plated, the connector 30 is obtained.

[0046] In some embodiments, see Figure 4 , step S3 further comprises the following steps:

[0047] Step S31: providing a heating device, placing the antenna to be processed on the heating device, and the heating device heats and melts a portion of the protective cover of the first winding to be processed to obtain the antenna to be polished;

[0048] Step S32: providing a grinding device, grinding away another part of the protective cover of the first winding to be processed so that the wire of the first winding to be processed is exposed to form the first winding 101, thereby obtaining the antenna to be dip-tinned.

[0049] In this embodiment, the cable includes a self-adhesive sleeve and an insulating sleeve, the insulating sleeve is sleeved on the wire 10, and the self-adhesive sleeve is sleeved on the insulating sleeve. The self-adhesive sleeve is plastic, such as nylon, which can be melted at high temperature, and the insulating layer is removed by grinding. In addition, grinding can remove the oxide layer on the surface of the first winding 101, increase the contact between the tin liquid and the first winding 101, so that the tin liquid cools to form a stable connection between the connector 30 and the first winding 101.

[0050] In some embodiments, see Figure 5 , in step S5, further comprising the following steps:

[0051] Step S51: providing a coating device and soldering flux, and the coating device coating the soldering flux on a surface of the first winding 101;

[0052] Step S52: providing a tinning device and tin liquid, and the tinning device applies the tin liquid to a surface of the first winding 101 to obtain an antenna to be cooled;

[0053] Step S53 : Cooling the tin liquid on a surface of the first winding 101 to obtain the antenna 100 .

[0054] The above-mentioned flux is rosin.

[0055] In some other embodiments, step S5 further includes the following steps:

[0056] The antenna to be plated is electroplated to obtain the antenna 100 .

[0057] The utility model further provides a communication device embodiment, the communication device includes the above-mentioned antenna 100, and the specific structure and function of the antenna 100 can be referred to the above-mentioned embodiment, which will not be described one by one here.

[0058] In the embodiment of the present application, compared with the prior art, the utility model omits the clamping component, and the wire 10 is spirally wound on the magnetic core 20 to form a first winding 101 and a second winding 102 that are connected to each other. The pitch of the first winding 101 is smaller than the pitch of the second winding 102. The connector 30 is connected to the first winding 101, and the connector 30 is used for connecting to an external device. The first winding 101 and the second winding 102 are formed by spirally winding the wire 10 on the magnetic core 20, so that the first winding 101 and the second winding 102 are directly connected, while the prior art forms an indirect connection through clamping. Therefore, the antenna 100 of the utility model has a stronger current carrying capacity than the prior art and a simpler structure.

[0059] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. An antenna, characterized in that: include: Magnetic core; A conductor, spirally wound around the magnetic core, so that the conductor forms a first winding and a second winding connected to each other, wherein the pitch of the first winding is smaller than the pitch of the second winding; A connector is connected to the first winding and is used for connecting to an external device.

2. The antenna according to claim 1, characterized in that The connecting member has a first surface; The first winding includes a plurality of coils which are sequentially connected end to end and arranged in parallel, and the first surface is attached to a connection surface formed by connecting the outer coils of the plurality of coils.

3. The antenna according to claim 1, characterized in that The cross section of the first winding or the second winding along the spiral direction is circular, square, waist-shaped or elliptical.

4. The antenna according to claim 1, characterized in that: The magnetic core is in the shape of a cube.

5. The antenna according to claim 4, characterized in that: The magnetic core is provided with a groove, the groove is located at a corner of the magnetic core, and the groove penetrates the magnetic core along the first winding toward the second winding.

6. The antenna according to claim 1, characterized in that The number of the first windings and the connecting members is two, one first winding corresponds to one connecting member, and the second winding is located between the two first windings.

7. The antenna according to claim 1, characterized in that: A first protrusion and a second protrusion are protruded from an outer surface of the magnetic core. The first protrusion and the second protrusion are arranged at intervals along a first direction, and the first winding is located between the first protrusion and the second protrusion.

8. The antenna according to claim 7, characterized in that: The second protruding portion is provided with an avoidance groove, and the end wire of the second winding passes through the avoidance groove and then is connected with the first winding.

9. The antenna according to claim 8, characterized in that The first protrusion and the second protrusion are both ring-shaped, and are sleeved on the magnetic core.

10. A communication device, characterized in that: Comprising the antenna as claimed in any one of claims 1 to 9.

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