阅读说明：本技术 面安装型连接器以及面安装型连接器组 (Surface mount connector and surface mount connector set ) 是由 田中葵 冈田大辅 于 2019-07-26 设计创作，主要内容包括：本发明提供不将内部端子向外部端子的外侧拉出的状态的面安装型连接器。面安装型连接器具备：外部端子,具有在第1方向上延伸的筒状部；内部端子,从第1方向观察,与外部端子分离地设置在筒状部内；以及绝缘体,被配置于内部端子与外部端子之间,具备第1主面和与第1主面相反一侧的第2主面,在筒状部内的绝缘体具有从第1主面贯通至第2主面的通孔。(The invention provides a surface mounting type connector in a state that an internal terminal is not pulled out to the outside of an external terminal. The surface-mount connector includes: an external terminal having a cylindrical portion extending in a 1 st direction; an internal terminal provided in the cylindrical portion, as viewed from the 1 st direction, separately from the external terminal; and an insulator disposed between the inner terminal and the outer terminal, and including a 1 st main surface and a 2 nd main surface on the opposite side of the 1 st main surface, wherein the insulator in the cylindrical portion has a through hole penetrating from the 1 st main surface to the 2 nd main surface.)

1. A surface-mount connector includes:

an external terminal having a cylindrical portion extending in a 1 st direction;

an internal terminal provided in the cylindrical portion, separately from the external terminal, as viewed from the 1 st direction; and

an insulator disposed between the inner terminal and the outer terminal and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

the insulator in the cylindrical portion has a through hole penetrating from the 1 st main surface to the 2 nd main surface.

2. The surface mount connector according to claim 1,

the through hole is surrounded by the insulator over the entire circumference as viewed from the 1 st direction.

3. The surface mount connector according to claim 1 or 2,

the insulator has a plurality of the through holes in the cylindrical portion.

4. The surface-mount connector according to any one of claims 1 to 3,

the insulator has a groove on the 2 nd main surface side, and the groove communicates from the through hole to the outside of the cylindrical portion as viewed from the 1 st direction.

5. The surface mount connector according to claim 4,

the groove communicates from the 1 st main surface side to the 2 nd main surface side.

6. A surface-mount connector set includes:

a 1 st surface mount type connector including a 1 st external terminal and a 1 st internal terminal; and

a 2 nd surface mount connector including a 2 nd external terminal and a 2 nd internal terminal, wherein the 2 nd external terminal is engaged with the 1 st external terminal, and the 2 nd internal terminal is engaged with the 1 st internal terminal,

the 1 st surface-mount connector includes:

the 1 st external terminal has a cylindrical portion extending in the 1 st direction;

the 1 st internal terminal is provided in the cylindrical portion separately from the 1 st external terminal as viewed from the 1 st direction; and

a 1 st insulator disposed between the 1 st inner terminal and the 1 st outer terminal, and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

the 2 nd surface mounting type connector includes:

the 2 nd external terminal having a cylindrical portion extending in the 1 st direction, the 2 nd external terminal having a diameter larger than that of the 1 st external terminal;

the 2 nd inner terminal is provided in the cylindrical portion separately from the 2 nd outer terminal as viewed from the 1 st direction; and

a 2 nd insulator disposed between the 2 nd inner terminal and the 2 nd outer terminal, and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

at least one of the 1 st insulator and the 2 nd insulator in the cylindrical portion has a through hole penetrating from the 1 st main surface to the 2 nd main surface.

7. The surface-mount connector set according to claim 6,

both the 1 st insulator and the 2 nd insulator in the cylindrical portion have a through hole penetrating from the 1 st main surface to the 2 nd main surface.

8. The surface-mount connector set according to claim 6,

the through hole is formed in the 1 st insulator, and the through hole is surrounded by the 1 st insulator over the entire circumference when viewed from the 1 st direction.

9. The surface-mount connector set according to claim 6,

the through hole is formed in the 2 nd insulator, and the through hole is surrounded by the 2 nd insulator over the entire circumference as viewed from the 1 st direction.

Technical Field

The present invention relates to a surface-mount connector and a surface-mount connector set that can be mounted on a substrate.

Background

A surface-mount type coaxial connector plug is known as follows (see, for example, patent document 1): in order to suppress positional displacement of the inner terminal and reduce the height of the inner terminal, the inner terminal is pulled out to the outside of the outer terminal (cylindrical portion), and the outer terminal is provided with a space, such as a passage, through which the inner terminal passes.

Patent document 1: japanese patent laid-open publication No. 2013-98122

In the above coaxial connector plug, there are cases where: characteristic deterioration occurs due to impedance mismatch caused by a distance (gap) between the outer terminal, i.e., the outer conductor, and the outer terminal, i.e., the center conductor, of the inner terminal in the channel portion. In case it is desired to avoid this, an increase in the product height results.

Further, since the inner terminal is pulled out to the outside of the outer terminal (cylindrical portion), it becomes a factor disturbing an electric field, and there is a concern that a propagation mode changes with increasing frequency, and a cutoff frequency is lowered and transmission is not possible.

Disclosure of Invention

The invention provides a surface mounting type connector in a state that an internal terminal is not pulled out to the outside of an external terminal.

The surface-mount connector according to the present invention includes: an external terminal having a cylindrical portion extending in a 1 st direction;

an internal terminal provided in the cylindrical portion so as to be separated from the external terminal when viewed from the 1 st direction; and

an insulator disposed between the inner terminal and the outer terminal and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

the insulator in the cylindrical portion has a through hole penetrating from the 1 st main surface to the 2 nd main surface.

According to the surface mount connector of the present invention, since the internal terminal is not pulled out to the outside of the external terminal, the factor disturbing the electric field disappears, and thus the factor of the propagation mode change disappears, and the reduction of the cutoff frequency can be suppressed. Further, by adjusting the size of the through hole provided inside the external terminal, the characteristic impedance of the external terminal and the internal terminal can be adjusted, and the electrical characteristics can be improved.

Drawings

Fig. 1A is a plan view of a surface-mount connector according to embodiment 1.

Fig. 1B is a perspective view of a surface-mount connector according to embodiment 1.

Fig. 1C is a rear perspective view of the surface mount connector according to embodiment 1.

Fig. 1D is a sectional view seen in the direction a-a of fig. 1A.

Fig. 2A is a plan view of the surface mount connector according to embodiment 2.

Fig. 2B is a perspective view of the surface-mount connector according to embodiment 2.

Fig. 2C is a rear perspective view of the surface mount connector according to embodiment 2.

Fig. 2D is a sectional view seen in the direction B-B of fig. 2A.

Fig. 3A is a perspective view of a surface-mount connector set according to embodiment 3.

Fig. 3B is a rear perspective view of the surface mount connector group according to embodiment 3.

Fig. 3C is a side perspective view of the surface-mount connector group according to embodiment 3.

Fig. 3D is a sectional view seen in the direction C-C of fig. 3B.

Fig. 4A is a plan view of the surface mount connector according to embodiment 4.

Fig. 4B is a perspective view of the surface mount connector according to embodiment 4.

Fig. 4C is a rear perspective view of the surface mount connector according to embodiment 4.

Fig. 4D is a sectional view seen in the direction D-D of fig. 4A.

Fig. 5A is a plan view of a surface-mount connector (male receptacle) according to embodiment 5.

Fig. 5B is a plan view of a plug receptacle (female receptacle) according to embodiment 5.

Fig. 5C is a schematic view showing a state in which the internal terminals of the male socket of fig. 5A are engaged with the internal terminals of the female socket of fig. 5B.

Detailed Description

A surface-mount connector according to claim 1 includes: an external terminal having a cylindrical portion extending in a 1 st direction;

an internal terminal provided in the cylindrical portion so as to be separated from the external terminal when viewed from the 1 st direction; and

an insulator disposed between the inner terminal and the outer terminal and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

the insulator in the cylindrical portion has a through hole penetrating from the 1 st main surface to the 2 nd main surface.

According to the above-described aspect 1, in the surface mount connector according to the aspect 2, the through hole may be surrounded by the insulator over the entire circumference as viewed from the 1 st direction.

According to the above-described 1 or 2 nd aspect, in the surface-mount connector according to the 3 rd aspect, the insulator may have a plurality of the through holes in the cylindrical portion.

According to any one of the above-described 1 st to 3 rd aspects, in the surface mount connector according to the 4 th aspect, the insulator may have a groove on the 2 nd principal surface side, the groove communicating from the through hole to the outside of the cylindrical portion as viewed in the 1 st direction.

According to the 4 th aspect, in the surface mount connector according to the 5 th aspect, the groove may communicate from the 1 st principal surface side to the 2 nd principal surface side.

A surface-mount connector set according to claim 6 includes: a 1 st surface mount type connector including a 1 st external terminal and a 1 st internal terminal; and

a 2 nd surface mounting type connector including a 2 nd external terminal and a 2 nd internal terminal, wherein the 2 nd external terminal is engaged with the 1 st external terminal, the 2 nd internal terminal is engaged with the 1 st internal terminal,

the 1 st surface-mount connector includes:

the 1 st external terminal has a cylindrical portion extending in the 1 st direction;

the 1 st inner terminal is provided in the cylindrical portion so as to be separated from the 1 st outer terminal when viewed from the 1 st direction; and

a 1 st insulator disposed between the 1 st inner terminal and the 1 st outer terminal, and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

the 2 nd surface mount type connector includes:

the 2 nd external terminal has a cylindrical portion extending in the 1 st direction, the 2 nd external terminal has a diameter larger than that of the 1 st external terminal,

the 2 nd inner terminal is provided in the cylindrical portion so as to be separated from the 2 nd outer terminal when viewed from the 1 st direction,

a 2 nd insulator disposed between the 2 nd inner terminal and the 2 nd outer terminal, and including a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface,

at least one of the 1 st insulator and the 2 nd insulator in the cylindrical portion has a 2 nd through hole penetrating from the 1 st main surface to the 2 nd main surface.

According to the 6 th aspect, in the surface-mount connector set relating to the 7 th aspect, both the 1 st insulator and the 2 nd insulator in the cylindrical portion may have a through hole penetrating from the 1 st main surface to the 2 nd main surface.

According to the 6 th aspect, in the surface-mount connector set according to the 8 th aspect, the through hole may be formed in the 1 st insulator, and the through hole may be entirely surrounded by the 1 st insulator when viewed from the 1 st direction.

According to the above-mentioned 6 th aspect, in the surface-mount connector set according to the 9 th aspect, the through hole may be formed in the 2 nd insulator, and the through hole may be entirely surrounded by the 2 nd insulator as viewed from the 1 st direction.

Hereinafter, a surface mount connector and a surface mount connector set according to an embodiment will be described with reference to the drawings. In the drawings, substantially the same components are denoted by the same reference numerals, and redundant description is omitted.

(embodiment mode 1)

Fig. 1A is a plan view of a surface-mount connector 10a according to embodiment 1. Fig. 1B is a perspective view of a surface-mount connector 10a according to embodiment 1. Fig. 1C is a rear perspective view of the surface-mount connector 10a according to embodiment 1. Fig. 1D is a sectional view seen from a-a direction of fig. 1A. For convenience, the direction in which the cylindrical portion of the external terminal 4a extends is referred to as the z-direction, and the plane is referred to as the x-y plane.

The surface-mount connector 10a is a male socket (male type), and includes an external terminal 4a, an internal terminal 2a, and an insulator 1. The external terminal 4a has a cylindrical portion extending in the 1 st direction (z direction). The inner terminal 2a is provided in the cylindrical portion separately from the outer terminal 4a as viewed from the 1 st direction. The insulator 1 is disposed between the inner terminal 2a and the outer terminal 4a, and includes a 1 st main surface and a 2 nd main surface opposite to the 1 st main surface. The insulator 1 in the cylindrical portion has a through hole 6 penetrating from the 1 st main surface to the 2 nd main surface.

According to the surface mount connector 10a, since the inner terminal 2a is not pulled out to the outside of the outer terminal 4a, there is no factor disturbing the electric field, and thus the factor of the change of the propagation mode from the TEM mode to the high-order mode disappears, and the reduction of the cutoff frequency can be suppressed. Further, by adjusting the size of the through hole 6 provided inside the external terminal 4a, the characteristic impedance of the external terminal 4a and the internal terminal 2a can be adjusted, and the electrical characteristics can be improved. Since the relative permittivity of the through hole 6 in the air layer is 1, the influence of the electric field on the peripheral members such as the external terminal can be suppressed because the electric field is dense, as compared with the case where a material having a relative permittivity of 1 or more is filled. This enables the cutoff frequency to be shifted to a high frequency range, and a connector that can accommodate higher frequencies can be realized. Further, by providing the space as the through hole 6, the flux generated from the solder at the time of mounting can be left inside the space, and the flux rise can be suppressed.

The surface-mount connector is not limited to the male socket, and may be either a male socket or a female socket.

The surface-mount connector is a coaxial connector, but is not limited thereto.

The components constituting the surface mount connector 10a will be described below.

< insulator >

The insulator 1 is made of, for example, resin. As the resin, any generally used insulating resin may be used. For example, LCP (Liquid Crystal Polymer, industrial Liquid Crystal Polymer) or the like can also be used. The insulator 1 is disposed between the inner terminal 2a and the outer terminal 4a, and has a 1 st main surface and a 2 nd main surface. The insulator 1 is molded by insert molding, for example. The insulator 1 ensures electrical insulation between the internal terminal 2a and the external terminal 4 a.

The insulator 1 in the cylindrical portion has a through hole 6 penetrating from the 1 st main surface to the 2 nd main surface. The through hole 6 may be formed by, for example, cutting a portion of the inner terminal 2a drawn out to the outside of the outer terminal 4 a. The through hole 6 has a function of adjusting the characteristic impedance of the external terminal 4a and the internal terminal 2 a. The through-hole 6 functions as a space for retaining flux generated from solder when the board is mounted on the substrate. Further, the through hole 6 may not overlap with the external terminal 4a when viewed from the 1 st direction. In other words, the through-hole 6 is surrounded by the insulator 1 as viewed from the 1 st direction. In this case, the flux can be prevented from rising toward the external terminal 4 a. Further, the end of the internal terminal 2a may be exposed to the through hole 6. In this case, when the end of the internal terminal 2a is connected to the substrate, the connection can be easily performed because the connection can be confirmed from the 1 st direction.

The insulator 1 may have a groove 8 on the 2 nd main surface side, which communicates from the through hole 6 to the outside of the cylindrical portion of the external terminal 4 a. In this case, too, the flux generated from the solder at the time of mounting can be left in the groove 8, and the flux rise can be suppressed.

The through-hole 6 may be provided at the same time as the insert molding of the insulator 1, or the through-hole 6 may be provided by cutting the insulator 1 after the insulator 1 is formed. Further, the groove 8 may be provided at the same time as the insert molding of the insulator 1, or the groove 8 may be formed by removing a part of the 2 nd main surface of the insulator 1.

< external terminal >

The external terminal 4a has a cylindrical portion extending in the 1 st direction (z direction). The cylindrical portion of the external terminal 4a has a circular shape in fig. 1A to 1C, but is not limited thereto, and may have an elliptical shape, a rectangular shape, a polygonal shape, or the like. The external terminal 4a may have a shape that can be fitted to the external terminal of the connection target.

The external terminal 4a is made of a metal plate made of copper, copper alloy, or the like. Further, plating such as Ni plating and Au plating may be applied to the surface.

< internal terminal >

The internal terminal 2a is provided in the cylindrical portion separately from the external terminal 4a as viewed from the 1 st direction (z direction). The internal terminal 2a has a pin shape such as a cylindrical shape in fig. 1A and 1B, but is not limited thereto. For example, as shown in embodiment 5 described later, the curved shape may be adopted. The internal terminal 2a may have a shape that can be fitted to the internal terminal of the connection target.

The internal terminal 2a is made of a metal plate made of copper, copper alloy, or the like. Further, plating such as Ni plating and Au plating may be applied to the surface.

When the surface mount connector 10a is mounted on a substrate, the internal terminals 2a of the surface mount connector 10a do not pass below the external terminals 4 a. This makes it possible to bring the electrode connected to the internal terminal located in the vicinity of the external terminal of the substrate into the cylindrical portion of the external terminal 4a of the surface-mount connector 10a, and thus, the external terminal 4a and the internal terminal 2a, and the external terminal 4a and the electrode hardly hold capacitance, thereby achieving an effect of suppressing impedance mismatch. In addition, in the case where the substrate is a multilayer substrate in which a conductive layer is present between the ground layers, the substrate can be directly connected to the internal terminal through the conductive layer, and the electrode of the substrate is not exposed to the outside of the surface-mount connector 10a, so that the influence of noise received from the outside can be blocked.

(embodiment mode 2)

Fig. 2A is a plan view of the surface-mount connector 10b according to embodiment 2. Fig. 2B is a perspective view of the surface-mount connector 10B according to embodiment 2. Fig. 2C is a rear perspective view of the surface mount connector according to embodiment 2. Fig. 2D is a sectional view seen from the direction B-B of fig. 2A.