KR20070109332A - Built-in antenna assembly of wireless communication terminals - Google Patents

Abstract

A built-in antenna assembly of a wireless communication terminal is provided to maintain a constant radiating property of a radiating unit by minimizing a deformation of the radiating unit. A built-in antenna assembly of a wireless communication terminal includes a base(110), a radiating unit(120), a terminal unit(130), and a terminal fixing unit(140). The base is mounted on a board. The radiating unit is fixed on an upper surface of the base and transmits and receives signals. The terminal unit is elongated from the radiating unit along an outer periphery of the base and electrically connected to a contact pad unit which is protruded from the board. The terminal fixing unit includes at least one lower protrusion at a lower portion of the base. A circular hole is formed on one end of the terminal unit corresponding to the lower protrusion. The circular hole is forcefully inserted into the lower protrusion in a horizontal direction, so that the terminal unit is fixed on the base.

Description

Built-in Antenna Assembly of Wireless Communication Terminals

1 is a perspective view showing a conventional built-in antenna assembly.

Figure 2 (a) (b) is a cross-sectional view showing a forward terminal support structure applied to the conventional built-in antenna assembly.

Figure 3 (a) (b) is a cross-sectional view showing a reverse terminal support structure applied to the conventional built-in antenna assembly.

4 is a block diagram illustrating an internal antenna assembly of a wireless communication terminal according to the present invention.

Figure 5 (a) (b) (c) is a working state of assembling the terminal portion of the built-in antenna assembly of the wireless communication terminal according to the present invention as a terminal fixing portion to the base.

6 is a detailed view illustrating a terminal fixing part of an internal antenna assembly of a wireless communication terminal according to the present invention.

Explanation of symbols on the main parts of the drawings

101: contact pad portion 102: fixed end

103: elastic free end 104: embossed portion

110: base 112: fixing protrusion

120: radiating part 122: fixing hole

130: terminal portion 131: extension portion

133: horizontal portion 140: terminal fixing portion

141: lower protrusion 142: circular hole

143: opening P: substrate

The present invention relates to a built-in antenna assembly provided in a wireless communication terminal, and more particularly, it is possible to more stably support the electrical contact between the built-in antenna and the substrate, the structure is simple to improve the assembly, the radiating portion The present invention relates to an internal antenna assembly of a wireless communication terminal improved to minimize deformation.

In general, wireless communication terminals include voice, text, and video data through wireless communication such as personal communication service (PCS) terminals, personal digital assistants (PDAs), smart phones, next-generation mobile communication (IMT-2000) terminals, and wireless LAN terminals. A portable communication device capable of transmitting and receiving data.

The wireless communication terminal is equipped with an antenna such as a helical antenna or a dipole antenna to improve transmission and reception sensitivity, and all of these antennas protrude out of the wireless communication terminal as external antennas. It is.

However, while the external antenna has an advantage of omnidirectional radiation characteristics, the antenna is protruded to the outside, so the damage caused by external force is very high, it is very inconvenient to carry, and the appearance of the terminal is beautifully designed. There was this.

Accordingly, in order to solve the problem of the external antenna, an internal antenna having a flat structure such as a micro strip patch antenna or an inverted-F antenna is used as the antenna mounted inside the terminal without protruding to the outside.

1 is a perspective view showing a conventional built-in antenna assembly, wherein the built-in antenna assembly 10 is mounted on a substrate (not shown) including a base 11, a radiating portion 12, and a terminal portion 13.

The fixed structure is fixed on the substrate of the base 11, the radiating portion 12 is made of a dielectric is provided on the upper surface of the base 11 corresponds to the transmitting and receiving portion of the antenna, the terminal portion 13 It is made of the same dielectric as the radiating part 12, and is composed of a feed pin (13a) and ground pin (13b) which is grounded to the feed section provided on the substrate.

Meanwhile, FIGS. 2 (a) and 3 (a) are provided to stably support the contact state while preventing the electrical contact failure between the terminal portion 13 and the substrate when the built-in antenna 10 is mounted on the substrate. As shown in (b), various types of terminal support structures 20 and 30 were provided.

The conventional terminal support structure 20 shown in Figs. 2 (a) and 2 (b) has a guider 21 which forms a guide hole 21a so that a terminal portion 13 whose length is centered inside (right side in the drawing) is inserted. And a rubber material 23 formed at the lower end of the base 11 corresponding to the bending portion 14 bent upwardly at the lower end of the terminal portion 13 and formed at the tip of the base 11. The terminal portion 13 inserted into the base 11 is a forward terminal supporting structure positioned inward of the base 11.

In this case, when the base 11 of the built-in antenna 10 is coupled with the substrate P, the terminal portion 13 supported by the terminal support device 20 is the bending portion 14 of the substrate P. The terminal portion 13 in contact with the contact pad portion 25 provided on the upper surface and inclined downward at a predetermined angle θ1 with respect to the horizontal line is elastically deformed to have elastic restoring force while absorbing the pressing force in the A direction.

In addition, the conventional terminal support structure 30 shown in Fig. 3 (a) (b) is a guider for forming a guide hole (31a) so that the terminal portion 13, the center of which is bent to the outside (left in the figure) is inserted And a rubber material 33 disposed below the guider 31 corresponding to the bending portion 14 upwardly bent at the lower end of the terminal portion 13 and formed at the tip of the base 11. The terminal portion 13 inserted into the guider 21 is a reverse terminal supporting structure in which the base portion 11 is positioned toward the bar of the base 11.

In this case, when the base 11 of the internal antenna 10 and the substrate P are coupled, the terminal portion 13 also contacts the contact pad portion 35 of the substrate P. At the same time, the terminal portion 13 inclined downward at a predetermined angle θ2 with respect to the horizontal line is elastically deformed to have elastic restoring force while absorbing the pressing force in the A direction.

However, when the conventional terminal support structures 20 and 30 are employed in the built-in antenna 10, the terminal 13 and the contact pad 25 when the built-in antenna 10 and the substrate P are assembled. The terminal portion 13 in consideration of the working distance between the bending portion 14 and the contact pad portions 25 and 35 of the bent terminal portion 13 and the load applied to the terminal portion 13 for electrical connection with the 35. Since it is necessary to design the degree of bending accurately), it takes a lot of time to design the terminal, and in the event of a design error, it causes a poor contact between the bending portion 14 and the contact pads 25 and 35 to constitute a predetermined circuit. There was a problem that can not.

In addition, when assembling the built-in antenna 10, the worker pulls out the terminal portion 13 extending from the radiating portion 12 through the guide holes 21a and 31a of the guiders 21 and 31. This is cumbersome, thereby acting as a factor that lowers work productivity.

In addition, when the radiation unit is deformed in the process of assembling the radiation unit 12, there is a problem of lowering radiation characteristics or causing product defects.

In addition, since there is no design standard for the terminal unit that can be applied to various terminal models collectively from the terminal set maker's perspective, the terminal unit 13 or the contact pad unit 25 and 35 are constantly formed in a desired direction in the RF matching and antenna. It was difficult to do so, and there was a problem in that the terminal portion 13 had to be designed separately according to various models of terminals.

Accordingly, the present invention is to solve the above-mentioned conventional problems, the purpose of which is to simplify the design of the terminal portion in electrical contact with the substrate when mounting the substrate of the internal antenna, it is possible to increase the design freedom, the terminal portion The present invention can stably ensure contact reliability and provide an internal antenna assembly of a wireless communication terminal that can be applied to various terminal models collectively.

In addition, another object of the present invention is to provide a built-in antenna assembly of a wireless communication terminal that can improve the work productivity because the overall configuration is simple and the assembly structure is simple.

In addition, another object of the present invention is to provide a built-in antenna assembly of a wireless communication terminal that can obtain stable radiation characteristics by minimizing deformation during assembly of the radiator.

As a technical configuration for achieving the above object, the present invention is a base mounted on a substrate; A radiator fixed to an upper surface of the base to transmit and receive a signal; A terminal portion extending from the radiating portion along the outer surface of the base to be in contact with the contact pad portion protruding on the substrate and electrically connected to the contact pad portion; And protruding at least one lower protrusion on the lower surface of the base, and opening the outer side to the tip of the terminal portion corresponding to the lower protrusion to form a through-hole which is forced into the lower protrusion in a horizontal direction. It provides a built-in antenna assembly of the wireless communication terminal comprising a; fixing to the terminal.

Preferably, the terminal portion is provided with an extension portion extending from the radiating portion to the lower end of the base vertically, and a horizontal portion extending free length in the horizontal direction from the lower end of the extension portion.

Preferably, the base has at least one fixing protrusion inserted into the fixing hole formed through the radiating portion on the upper surface.

More preferably, the fixing protrusion is provided with a fusion protrusion for melting by heat to fix the spinning unit to the base.

Preferably, the base has at least one elastic body corresponding to the upper surface of the terminal portion.

Preferably, the lower hole has an opening having a smaller width than the outer diameter of the lower protrusion on the outer side facing the lower protrusion.

More preferably, the opening portion has an inclined surface that gradually widens toward the lower protrusion side.

Preferably, the lower protrusion is provided with a fusion protrusion for melting by heat to fix the terminal to the base.

Hereinafter, the present invention according to the accompanying drawings in more detail as follows.

4 is a cross-sectional view showing an internal antenna assembly of a wireless communication terminal according to the present invention.

As shown in FIG. 4, the built-in antenna assembly 100 according to the present invention has a base 110 and a radiating part so as to increase the design freedom while more stably securing the electrical contact connection when contacting the substrate P. 120), the terminal unit 130 and the terminal fixing unit 140 are configured.

The base 110 is a fixed structure mounted on the substrate P, and formed of an insulating material.

The base 110 is preferably made of a structure that is divided into upper and lower parts to be combined with the upper and lower parts so as to have an internal space capable of embedding an actuator that generates vibration or sound alone or simultaneously.

The radiator 120 receives an electric signal of the substrate P, converts it into a radio wave, transmits the radio signal to the outside, and is a radiator made of a dielectric to receive radio waves of a specific frequency band transmitted from the outside.

The radiating unit 120 is preferably provided with approximately the same size as the upper surface of the base 110 to maximize the transmission and reception performance of the antenna.

Here, at least one fixing protrusion 112 inserted into the fixing hole 122 penetrating through the radiating part 120 is formed on the upper surface of the base 110 corresponding to the radiating part 120 at a predetermined height. do.

The fixing protrusion 112 is melted by heat provided from the outside after the assembling of the radiating part 120 and the base 110 to be integrated with the radiating part 120 so that the radiating part 120 is connected to the base 110. It is preferable to be provided with a fusion projection to securely fix it.

In addition, the terminal portion 130 provided to supply and ground the radiating portion 120 in contact with the substrate P is composed of an extension portion 131 and a horizontal portion 133, the extension portion Reference numeral 131 is a dielectric extending vertically by a predetermined length from one side of the radiator 120 to the lower end of the base 110 along the outer surface of the base 110.

The horizontal portion 133 is freely extended from the lower end of the extension portion 131 by a predetermined length in the horizontal direction, and the lower surface elastically with the contact pad portion 101 protruding on the substrate (P). The contact structure that is in contact.

 The contact pad portion 101, which is in contact with the lower surface of the horizontal portion 133, has a fixed end 102 soldered onto the substrate P to be electrically connected to a pattern circuit formed on the substrate P; It is composed of an elastic free end 103 is arranged parallel to the fixed end 102 and the primary bending bent to have an elastic force.

Here, the elastic free end 103 provided in the contact pad portion 101 is preferably provided with an embossed portion 104 that is secondly bent to partially contact the lower surface of the horizontal portion 133.

The distance between the fixed end 102 and the elastic free end 103 can maintain a stable contact state between the horizontal portion 133 and the contact pad 101 when assembling the base 110 and the substrate P. In order to provide sufficient elastic force, it is preferable to have a greater distance than the assembled base 110 and the substrate P.

Meanwhile, as shown in FIG. 6, the terminal unit 130 is divided into a feed pin forming a feed line to which external power is supplied and a ground pin forming a ground line, and the feed pin and the ground pin are formed on the substrate. The contact pads for power supply and the contact pads for grounding provided in (P) are configured to correspond to each other.

In addition, the lower portion of the base 110 is provided with an elastic body receiving portion 115 for accommodating at least one elastic body 116 so that the lower surface is in contact with the upper surface of the horizontal portion 133.

At this time, the lower surface of the elastic body 116 is preferably approximately the same as the lower end of the base 110 or protrudes downward.

The terminal fixing part 140 is a fixing means for fixing the terminal part 130 to the lower surface of the base 110, which is a lower protrusion 141 formed on the base 110 and the terminal part 130. It is provided with a circular hole 142 formed in).

As shown in FIG. 5 (a) and (b), the lower protrusion 141 is a fixing member protruding from at least one lower surface corresponding to the horizontal portion 133 of the terminal portion 130. 142 is a through member having a predetermined size through the free end of the horizontal flat portion 133, the front end corresponding to the lower projection 141 is opened to the outside.

Here, the lower hole 142 preferably has an opening 143 having a width W of a smaller size than an outer diameter of the lower protrusion 141 on the outer side facing the lower protrusion 141.

The opening 143 may more easily fix the lower protrusion 141 into the circular hole 142 formed in the terminal portion 130 that proceeds in a horizontal direction when assembling the lower protrusion 141 and the circular hole 142. It is provided with an inclined surface gradually wider toward the lower protrusion 141 side.

And, as shown in Figure 5 (c), the lower protrusion 141 is provided with a fusion projection to be melted by heat to fix the terminal portion to the base.

Assembling the built-in antenna assembly 100 having the above structure, the radiating portion 120 is located on the upper portion of the base 110, the extension portion of the terminal portion 130 extending from the radiating portion 120 131 corresponds to the vertical surface of the base 110, and the horizontal portion 133 extending in the horizontal direction from the extension 131 corresponds to the lower surface of the base 110.

In this state, as shown in FIG. 5 (a), the lower protrusion 141 protruding the circular hole 142 formed in the horizontal portion 133 of the end 130 to the lower surface of the base 110. To face each other.

Subsequently, when the worker pushes the horizontal portion 133 of the terminal portion 130 in the horizontal direction toward the lower protrusion 141, the opening 143 and the lower protrusion 141 opened to the outside of the circular hole 142. In contact with the opening 143 is opened to the outside by the external force that the horizontal portion 133 proceeds in the horizontal direction.

When the lower protrusion 141 passing through the opening 143 of the circular hole 142 is located at the inner diameter of the circular hole 142, as shown in FIG. 143 is returned to its original state.

The lower protrusion 141 located in the circular hole 142 is melted by heat provided from the outside, as shown in FIG. It can be fused to the lower surface.

Subsequently, the fixing protrusion 112 protruding from the upper surface of the base 110 is inserted into and fixed to the fixing hole 122 of the through-hole formed in the radiator 120, and then upwards through the fixing hole 122. The exposed fixing protrusion 112 is melted by heat to fix the radiating part 120 to the base 110.

In the state in which the radiating unit 120 and the terminal unit 130 are assembled to the base 110, the assembly jaw (not shown) provided in the base 110 is assembled in accordance with the assembly hole (not shown) of the substrate P. By mounting the base 110 on the substrate (P).

At this time, the horizontal portion 133 of the terminal portion 130 and the contact pad portion 101 of the substrate (P) is disposed so as to face each other up and down.

Accordingly, when the base 110 and the substrate P are assembled, the elastic free ends 103 of the contact pads 101 corresponding to the horizontal portions 133 are elastically deformed to provide an elastic force upward. When the contact between the horizontal portion 133 and the contact pad 101, it is possible to ensure a larger contact pressure.

In this case, the radiator 120 stably configures a power supply line and a ground line to which external power is supplied through the terminal unit 130 which is in contact with the contact pad 101 of the substrate P. It is possible to more stably perform the antenna function of transmitting and receiving.

While the invention has been shown and described in connection with specific embodiments, it is to be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

According to the present invention having the above-described configuration, an extension portion extending along an outer surface of the base from the radiating portion fixed to the base, and a contact pad portion provided on the substrate by being bent obliquely toward the substrate from the lower end thereof And a terminal fixing part fixed to the base by pushing the terminal part in the horizontal direction, and supplying power to the radiating part by contact with the horizontal part and the contact pad part when the substrate and the base are combined, and grounding. Since a series of circuits can be configured, the design of the terminal portion can be simplified, the design freedom can be increased, and the contact reliability of the terminal portion can be stably ensured.

In addition, since the deformation of the radiating part can be minimized when assembling the radiating part and the base, the radiation characteristics of the radiating part can be prevented from being lowered, and a product defect due to the shape deformation of the radiating part can be prevented.

And since the structure and assembly structure of the base to which the spinning part is assembled become simple compared with the past, the effect which can improve work productivity is acquired.

Claims (8)

A base mounted on the substrate; A radiator fixed to an upper surface of the base to transmit and receive a signal; A terminal portion extending from the radiating portion along the outer surface of the base to be in contact with the contact pad portion protruding on the substrate and electrically connected to the contact pad portion; And At least one lower protrusion protrudes from the lower surface of the base, and is formed to penetrate through the circular hole which is open outwardly to the tip of the terminal portion corresponding to the lower protrusion and is forcibly inserted into the lower protrusion horizontally. Built-in antenna assembly of a wireless communication terminal comprising a; fixing terminal. The method of claim 1,  The terminal portion is provided with an extension portion extending from the radiating portion to the lower end of the base vertically, and a horizontal portion extending free length in the horizontal direction from the lower end of the extension portion of the wireless communication terminal Built-in antenna assembly. The method of claim 1, The base has a built-in antenna assembly of the wireless communication terminal, characterized in that at least one fixing projection is inserted into the fixing hole formed through the radiating portion on the upper surface. The method of claim 3, The fixing protrusion is a built-in antenna assembly of the wireless communication terminal, characterized in that the melted by the heat is provided with a fusion projection to fix the radiator to the base. The method of claim 1, And the base has at least one elastic body corresponding to the upper surface of the terminal portion. The method of claim 1, The lower hole has an opening having an opening having a smaller width than the outer diameter of the lower projection on the outer side facing the lower projection. The method of claim 6, The opening has a built-in antenna assembly of the wireless communication terminal, characterized in that it has an inclined surface gradually wider toward the lower projection side. The method of claim 1, The lower protrusion is a built-in antenna assembly of a wireless communication terminal, characterized in that the melted by heat is provided with a fusion projection to fix the terminal to the base.

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