JPH097704A - Receptacle for coaxial connector - Google Patents

Abstract

PURPOSE: To improve the power of connection with a plug for a coaxial connector and also to improve the stability of electric connection. CONSTITUTION: A ground member 52 is provided from the upper surface of a resin case 50 to an inner periphery surface of a hole part 59, to an approximate entire surface of the inner periphery surface, and a recess part 52a is formed where an expansion part of an outer conductor of a plug is engaged with a tip part in the inner periphery surface of the hole part of the ground member 52. Thereby, the expansion part of the outer conductor of the plug is engaged with the recess part of the ground member of the receptacle so that a combination power of both is improved. Moreover, the ground member is provided approximately the entire surface of the inner periphery surface of the hole part of the resin case resulting in a complete ground connection to the outer conductor of the plug.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector receptacle to which, for example, a small-sized coaxial connector plug is mounted, and more particularly to a coaxial connector receptacle used as a component of portable communication equipment.

[0002]

2. Description of the Related Art The structure of a conventional coaxial connector receptacle will be described with reference to FIGS.

In FIG. 6, a receptacle 5 for a coaxial connector has a resin case 50 having a hole 59 into which a plug for a coaxial connector is fitted, and a pin-shaped projection 53a with which the socket of the plug comes into contact when the plug for the coaxial connector is fitted.
And a ground member having a contact portion 54a with which the outer conductor of the coaxial connector plug contacts.

FIG. 7 is a sectional view and a bottom view of the coaxial connector receptacle shown in FIG. As shown in (A) of the figure, the hot member 53 and the ground member 54 are integrally molded with the resin case 50. Then, as shown in (B) and (C), the terminal portion 53 of the hot member 53 is
b and the terminal portion 54b of the ground member 54 are respectively bent to the bottom surface side of the resin case 50 to be configured as a surface mountable component on the circuit board.

[0005]

However, in such a conventional receptacle for a coaxial connector, the ground member 5 is used.
In the hole 59 of the resin case 50, the bottom surface serves as the reference surface of the plate material and only rises vertically from there. Therefore, the groove for engaging the outer conductor of the coaxial connector plug is shallow, and the gap between the plug and the receptacle is small. Has a weak binding force. Also,
The contact between the outer conductor of the plug and the grounding member is a part of the cylindrical portion and linearly, so that the grounding connection is unstable. Also, since the outer conductor of the coaxial connector plug directly contacts the bottom of the hole of the resin case, the bottom of the hole of the resin case is scraped when the plug is attached or detached, and the outer conductor of the plug and the ground member of the receptacle are separated. Contact becomes unstable. Furthermore, the resin used in the conventional resin case is PPS.
Since it is (polyphenylene sulfide), resin burrs are likely to occur at the interface with the ground member, which may cause poor contact.

An object of the present invention is to provide a receptacle for a coaxial connector which enhances the coupling force with the plug for the coaxial connector and enhances the stability of electrical connection.

[0007]

SUMMARY OF THE INVENTION A coaxial connector receptacle according to the present invention is intended to enhance the coupling force between the outer conductor of the coaxial connector plug and the ground member of the receptacle and to enhance the stability of electrical connection. As described in 1, the ground member is provided on substantially the entire surface from the upper surface of the resin case to the inner peripheral surface of the hole provided in the resin case, and the outer conductor of the plug is attached to the tip of the ground member on the inner peripheral surface of the hole. To form a concave portion with which the inflated portion is engaged.

In the receptacle for coaxial connector of the present invention, in order to further increase the contact area between the outer conductor of the plug and the ground member of the receptacle, as described in claim 2, the ground member on the inner peripheral surface of the hole is provided. The taper shape becomes narrower toward the bottom.

According to the third aspect of the present invention, the receptacle for a coaxial connector is provided with a ground member on the inner peripheral surface of the hole portion of the resin case along the bottom surface of the hole portion in order to improve durability against attachment / detachment of the plug. So that the tip of the outer conductor of the plug contacts.

In the receptacle for a coaxial connector of the present invention, a chamfer is provided at the mouth of the hole of the resin case as described in claim 4 in order to enhance the insertability of the plug.

According to the fifth aspect of the present invention, in the receptacle for a coaxial connector, liquid crystal polymer is used as the material of the resin case in order to prevent contact failure due to resin burr that occurs at the boundary between the resin case and the ground member. use.

According to the sixth aspect of the present invention, in the coaxial connector receptacle, modified polyamide 6T is used as the material of the resin case in order to prevent contact failure due to resin burrs that occur at the boundary between the resin case and the ground member. To use.

[0013]

In the receptacle for the coaxial connector according to the first aspect of the present invention, when the plug for the coaxial connector is inserted,
Since the expanded portion of the outer conductor of the plug engages with the recess of the ground member of the receptacle, the coupling force between the two is increased. Also,
Since the ground member is provided on almost the entire inner peripheral surface of the hole of the resin case, the ground connection with the outer conductor of the plug is perfect.

In the receptacle for a coaxial connector according to the second aspect, since the outer conductor of the plug has elasticity and is formed into a cylindrical shape, the tip of the plug is recessed when the plug is inserted. Even the tapered portion of the ground member of the receptacle is in electrical contact with the outer conductor of the plug.

In the receptacle for a coaxial connector according to the third aspect, the above-mentioned inconvenience is eliminated because the tip of the outer conductor of the plug does not directly contact the resin portion of the resin case and the bottom surface in the hole of the resin case is scraped. To be done.

In the receptacle for the coaxial connector according to the fourth aspect, the outer conductor of the plug is not deformed due to the slant insertion of the plug with respect to the receptacle.

In the coaxial connector receptacle according to the fifth aspect, resin burrs are hardly generated at the boundary portion between the resin case and the ground member, and contact failure between the outer conductor of the plug and the ground member of the receptacle is prevented.

Also in the coaxial connector receptacle according to the sixth aspect, almost no resin burr is generated at the boundary between the resin case and the ground member, and contact failure between the outer conductor of the plug and the ground member of the receptacle is prevented.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The construction of a receptacle for a coaxial connector according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view showing the shape of a receptacle for a coaxial connector and a plug for a coaxial connector attached thereto. In FIG. 1, the receptacle 5 has a resin case 50 having a hole 59 into which the plug 6 is mounted, a hot member having a pin-shaped protrusion 51a with which the center conductor of the plug comes into contact when the plug is mounted, and an outer conductor of the plug. It is integrally molded with the grounding member 52, and this receptacle is surface-mounted on a circuit board or the like. One plug 6 is provided with a housing 1 as an outer conductor, and an inflating portion 14 is provided in a tubular portion thereof. The coaxial cable 4 is connected to this plug.

FIG. 2 is a view showing the cross section and the shape of the bottom surface of the receptacle. As shown in (A), the resin case 5
A ground member 52 is provided on the inner peripheral surface of the hole portion 59 of No. 0. The angle .theta.1 at which the expanded portion (14 in FIG. 1) of the plug engages with a part of the ground member 52 in the hole portion.
A concave portion 52a indicated by is provided. This earth member 52
Extends the ground member 52 on the inner peripheral surface of the hole 59 along the bottom surface of the hole of the resin case 50 to a position where the tip of the outer conductor of the plug abuts. In this example, the hole 5
The inner diameter d2 of the tip of the ground member in 9 is smaller than the opening diameter d1. A curved chamfered portion indicated by R is formed at the mouth of the hole 59. Further, as shown in FIG. 1 and FIG. 2B, the ground member 52 extends around a part of the bottom surface via the side surface of the resin case 50, and the bottom portion of the ground member is attached to the bottom surface of the resin case. 52b
Is formed. On the other hand, a part of the hot member 51 is provided with a pin-shaped protruding portion 51a, a bottom surface portion 51b of the hot member is provided on the bottom surface of the resin case 50, and the resin is made to wrap around the root portion of the pin-shaped protruding portion 51a. In this way, the pin-shaped protrusion 5
Since the resin is made to wrap around the root portion of 1a, the pin-shaped protrusion 51a is generated by the contracting force of the resin in the radial direction during resin molding.
The root part of is strongly held in the resin case. Hot parts 5
1 is a bottom surface portion 51 from the bottom surface to the side surface of the resin case 50.
b and the side surface portion 51c are exposed.

As a material of the resin case 50, for example, "Vectra" which is a trade name manufactured by Hoechstra Celanese Co., Ltd.
Liquid crystal polymer such as is used. This liquid crystal polymer has a heat resistance of 260 ° C. or higher, a dielectric constant of 4.5 or lower at 1 MHz, can be formed into a thin wall with a thickness of 0.2 mm or less, and has a characteristic that burrs are hardly generated. No burr is generated at the interface between the ground member and the resin of the resin case, and no contact failure occurs.

As the material of the resin case 50,
For example, a modified polyamide 6T such as "Aren" which is a trade name manufactured by Mitsui Petrochemical Co., Ltd. is used. This resin material also has a heat resistance of 260 ° C. or higher, a dielectric constant at 1 MHz of 4.5 or less, and thin-wall molding of 0.2 mm or less is possible, and the entire size can be reduced.

FIG. 3 is a sectional view showing a state in which the plug is attached to the receptacle. In the figure, 41 is a center conductor of the coaxial cable, 42 is an insulator, 43 is an outer conductor,
44 is an outer skin. As shown in the figure, the center conductor 41 of the coaxial cable is in the socket 3 and the outer conductor 4 of the coaxial cable is in the socket 3.
3 are electrically connected to the housing 1, respectively.
The socket 3 is held in the housing 1 via the bushing 2. When a plug to which such a coaxial cable is connected is first inserted into the receptacle as shown in (A) to (B), the chamfered portion R is formed at the mouth of the hole, so that the plug housing 1 When the tubular portion is smoothly collapsed and is further pushed in, the tubular portion of the housing 1 is expanded again by its elasticity as shown in (C), and the inflating portion 14 provided in the housing is recessed into the ground member recess 52a. It engages and is also electrically connected. In this state, as shown in (C), since the tip of the outer conductor of the plug contacts the ground member 52, the bottom surface of the hole of the resin case 50 is not scraped by the plug. At that time, the socket 3 comes into contact with the pin-shaped protrusion 51a of the hot member of the receptacle and is electrically connected.

Next, the construction of the coaxial connector receptacle according to the second and third embodiments of the present invention will be described with reference to FIGS.

FIG. 4 is a sectional view of a receptacle according to the second embodiment. As shown in (A), the ground member 52 is tapered on the inner peripheral surface of the hole portion 59 of the resin case 50 so as to narrow downward. Θ2 in the figure indicates the taper angle. As shown in (B), in the second embodiment, the tip of the cylindrical portion of the housing 1 of the plug is engaged with the ground member 52 in a concave shape. Therefore, the outer conductor of the plug, including the tapered portion, makes electrical contact with the ground member over a wide area.

FIG. 5 is a sectional view of a receptacle according to the third embodiment. Unlike the example shown in FIG. 2 as the first embodiment, a chamfered portion A having a linear cross section is formed at the mouth of the hole 59. Even with such a shape, when the plug is inserted into the receptacle, the tubular portion of the housing 1 of the plug is smoothly recessed, so that the outer conductor of the plug is not deformed.

[0028]

According to the receptacle for a coaxial connector of the first aspect of the present invention, when the plug for the coaxial connector is inserted, the expanded portion of the outer conductor of the plug engages with the recess of the ground member of the receptacle. , The bond between them increases. Further, since the ground member is provided on substantially the entire inner peripheral surface of the hole of the resin case, the ground connection with the outer conductor of the plug is perfect.

According to the receptacle for a coaxial connector of the second aspect, since the outer conductor of the plug is formed into a cylindrical shape having elasticity, when the plug is inserted, the tip of the plug is recessed. Even the tapered portion of the grounding member of the receptacle is in electrical contact with the outer conductor of the plug, and the grounding connection with the outer conductor of the plug is completed over a large area.

According to the receptacle for the coaxial connector of the third aspect, the tip of the outer conductor of the plug does not come into direct contact with the resin portion of the resin case, and the bottom surface in the hole portion of the resin case is shaved. Will be resolved.

According to the receptacle for a coaxial connector of the fourth aspect, the outer conductor of the plug is not deformed due to the slant insertion of the plug into the receptacle.

According to the receptacle for a coaxial connector of the fifth and sixth aspects, almost no resin burr is generated at the boundary portion between the resin case and the ground member, and there is a contact failure between the outer conductor of the plug and the ground member of the receptacle. To be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a relationship between a coaxial connector receptacle and a plug.

FIG. 2 is a sectional view and a bottom view of a receptacle.

FIG. 3 is a cross-sectional view showing how a plug is attached to a receptacle.

FIG. 4 is a sectional view of a receptacle for a coaxial connector according to a second embodiment.

FIG. 5 is a sectional view of a coaxial connector receptacle according to a third embodiment.

FIG. 6 is a perspective view of a conventional coaxial connector receptacle.

FIG. 7 is a sectional view and a bottom view of a conventional coaxial connector receptacle.

[Explanation of symbols]

 1-Housing 2-Bushing 3-Socket 4-Coaxial cable 5-Receptacle 6-Plug 14-Expansion part 50-Resin case 51-Hot member 51a-Pin-like protrusion 51b-Bottom part 51c-Side part 52-Grounding member 52a -Concave part 52b-Bottom part 59-Hole part

Claims (6)

[Claims] 1. A coaxial connector plug equipped with an elastic cylindrical outer conductor having an expanded portion that bulges outward at a tip end thereof is mounted, and a hole into which the coaxial connector plug is inserted. A receptacle for a coaxial connector, which is formed by integrally integrating a resin case having a portion, a hot member having a pin-shaped protruding portion with which a central conductor of the plug contacts when the plug is mounted, and a ground member with which an outer conductor of the plug contacts. A grounding member is provided on substantially the entire inner circumferential surface of the hole from the upper surface of the resin case to the inner circumferential surface of the hole, and the outer conductor of the plug expands at the tip of the grounding member on the inner circumferential surface of the hole. A receptacle for a coaxial connector, characterized in that a recess for engaging the parts is formed. 2. The receptacle for a coaxial connector according to claim 1, wherein the grounding member on the inner peripheral surface of the hole is tapered so as to narrow downward. 3. The grounding member on the inner peripheral surface of the hole extends along the bottom surface of the hole of the resin case to a position where the tip of the outer conductor of the plug contacts. Receptacle for coaxial connector described in. 4. The receptacle for a coaxial connector according to claim 1, 2 or 3, wherein a chamfer is provided at the mouth of the hole. 5. The receptacle for a coaxial connector according to claim 1, wherein the material of the resin case is a liquid crystal polymer. 6. The receptacle for a coaxial connector according to claim 1, wherein the material of the resin case is modified polyamide 6T.