JP2009032604A - Connector for antenna - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for an antenna capable of easily switching an internal antenna and an external antenna. <P>SOLUTION: The connector 10 comprises a plug 1 projecting the external antenna 3, and a socket 2 wherein a switch 20 organized by a movable contact 2a and a fixed contact 2b is connected with the internal antenna 4b. The plug 1 has a pin contact 11 for connecting with a signal wire of the external antenna 3, a first cylindrical contact 12 for connecting with a ground of the external antenna 3, and a first shell 13 organizing an outer shell. The socket 2 has a housing 21 for the pin contact 11 to be inserted into, a second cylindrical contact 22 in contact with the first cylindrical contact 12, and a second shell 23 to be fitted in by making the first shell inserted. The first shell 13 prepares a projection 13s, the second shell 23 prepares a spiral groove 23s for guiding the projection 13s, and the second shell 23 changes over the switch 20 by turning the plug 1 by a designated angle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an antenna connector. In particular, regarding the structure of the antenna connector, for example, this antenna connector connects a PC card for a wireless LAN (Local Area Network) that can be attached to a notebook personal computer and the like to an external antenna.

  In offices and homes, wireless LAN devices such as notebook personal computers (hereinafter referred to as PCs) can be wirelessly connected to a broadband router so that a plurality of notebook PCs can access the Internet. Such a wireless communication configuration has the advantage that the notebook PC can be easily moved.

  Notebook PCs and PDAs (Personal Digital Assistants), which are portable small electronic devices, have an antenna for transmitting and receiving radio waves installed inside the case, and a switch mechanism is provided in the case to improve reception efficiency. An antenna connector (coaxial connector) is provided. Then, by connecting an external antenna to the antenna connector, it is possible to switch between the internal antenna and the external antenna. When it is difficult to transmit and receive radio waves with the internal antenna, radio waves are transmitted and received with the external antenna.

  As such an antenna connector, there has been invented an antenna connector with a switch capable of switching between an external antenna and an internal antenna by inserting a plug to which an external antenna is connected into a socket provided in a housing ( For example, see Patent Document 1).

  In the antenna connector according to Patent Document 1, an antenna is connected to one end of a coaxial cable, and a plug is connected to the other end of the coaxial cable. Then, this plug is attached to and detached from the socket. The plug includes a pin contact that is connected to the inner conductor of the coaxial cable, and a cylindrical contact that is connected to the outer conductor of the coaxial cable and surrounds the pin contact.

  On the other hand, the socket has a movable contact that is connected to the pin contact, and a fixed contact that elastically contacts the movable contact. The movable contact and the fixed contact come into contact with each other to constitute a switch in which the internal antenna functions.

  The socket is a pair of shells that can contact the inner and outer periphery of the cylindrical contact, a printed circuit board provided with a ground pattern for grounding these shells, and a movable contact and a fixed contact mounted on the printed circuit board. And a housing disposed therein. When the plug is inserted into the socket, the pin contact separates the movable contact from the fixed contact and contacts the movable contact to switch to the external antenna.

  On the other hand, some of the notebook PCs and PDAs described above do not include an internal antenna in the housing. In recent years, notebook PCs of this type can transmit and receive radio waves by inserting a PC card that is provided in a housing and has a chip antenna (internal antenna) in a slot.

FIG. 10 is a state diagram in which the PC card having the internal antenna and the external antenna are connected. In FIG. 10, a PC card 7 has a connection terminal 7a on one end side, a socket 7b with a switch on the other end side, and a chip antenna (not shown). A stand-shaped external antenna 8 a is connected to one end of the coaxial cable 8, and a plug 8 b is connected to the other end of the coaxial cable 8. By inserting the plug 8b into the socket with switch 7b, the internal antenna can be switched to the external antenna 8a.
JP 2004-304313 A

  A conventional antenna connector switches between an internal antenna and an external antenna by inserting and removing a plug connected to the external antenna into a socket with a switch. However, since the plug and the socket with switch are fitted with a relatively strong force, there is a problem that it is not easy to insert and remove the plug.

  Moreover, when it comes to an antenna connector applied to a portable small electronic device, it is not preferable to carry a large external antenna as shown in FIG. If a relatively small external antenna is directly connected to a portable small electronic device or a PC card, it is convenient to carry and can communicate wirelessly even during movement. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide an antenna connector that can be easily switched between an internal antenna and an external antenna and can be directly connected to a relatively short rod-shaped external antenna. To do.

  The present inventor configures a cam device with a plug and a socket with a switch so that the plug provided with an external antenna and the socket with a switch are rotationally coupled so as to be difficult to separate and the rotational movement of the plug is converted into a forward and backward movement. The inventors have found that the switch provided in the socket is switched, and based on this, the inventors have invented the following new antenna connector.

  (1) A plug provided with an external antenna and a socket provided with a switch connected to the internal antenna are rotationally coupled with difficulty in separation so that the rotational movement of the plug is converted into a forward / backward movement. A connector for an antenna which forms a cam device and switches the switch by rotating the external antenna.

  In the antenna connector according to the invention of (1), for example, in a state where the external antenna is erected, the plug and the socket may be relatively close and the switch may be turned off, and the internal antenna is switched to the external antenna. Can be switched. When the external antenna is turned upside down, the plug and the socket are relatively separated from each other, the switch may be turned on (contacted), and the external antenna can be switched to the internal antenna.

  The antenna connector according to the invention of (1) includes a plug and a socket with a switch so that the plug provided with the external antenna and the socket with a switch are rotationally coupled so as to be difficult to separate, and the rotational movement of the plug is converted into a forward and backward movement. Since the switch provided in the socket is switched by configuring the cam device and rotating the external antenna, it is easy to switch between the internal antenna and the external antenna, and an antenna that can directly connect a relatively short rod-shaped external antenna Connector can be provided.

  (2) It has a switch composed of a plug that projects a rod-shaped external antenna in a direction perpendicular to the axial direction, a movable contact, and a fixed contact with which the movable contact elastically contacts, and this switch is connected to the internal antenna. A socket connected to the signal line of the external antenna and a pin contact protruding in an axial direction; and a first concentrically surrounding the pin contact connected to the ground of the external antenna. A cylindrical contact, and a cylindrical first shell that covers the first cylindrical contact so as to be insulated and constitutes an outer shell. The socket has an insertion hole into which the pin contact is inserted. A cylindrical housing having an opening in the surface and in which the movable contact and the fixed contact are disposed, and the housing is coaxially provided inside and outside. Has a second cylindrical contact that contacts the inner periphery of the first cylindrical contact, and a cylindrical second shell that surrounds the second cylindrical contact and into which the first shell is inserted and fitted. The first shell is provided with one or more protrusions projecting in a direction perpendicular to the axial direction, the second shell is provided with a spiral groove for guiding the protrusions, and the pin is rotated by a predetermined angle. The tip of the contact is an antenna connector that displaces the movable contact in a direction away from the fixed contact.

  The antenna connector according to the invention of (2) includes a plug and a socket. The plug projects a rod-shaped external antenna in a direction orthogonal to the axial direction. The socket has a switch composed of a movable contact and a fixed contact with which the movable contact abuts elastically. This switch is connected to the internal antenna.

  The plug has a pin contact, a first cylindrical contact, and a cylindrical first shell. The pin contact is connected to the signal line of the external antenna and protrudes in the axial direction. The first cylindrical contact is connected to the ground of the external antenna and surrounds the pin contact concentrically. The first shell covers the first cylindrical contact in an insulative manner and constitutes an outer shell.

  The socket has a cylindrical housing, a second cylindrical contact, and a cylindrical second shell. The housing has an insertion hole on one surface into which the pin contact is inserted. The housing has a movable contact and a fixed contact disposed therein. The second cylindrical contact includes a housing coaxially. The outer periphery of the second cylindrical contact is in contact with the inner periphery of the first cylindrical contact. The second shell surrounds the second cylindrical contact, and the first shell is inserted and fitted therein.

  The first shell is provided with one or more protrusions that protrude in a direction orthogonal to the axial direction. The second shell is provided with a spiral groove for guiding the protrusion. When the plug is rotated by a predetermined angle, the tip end portion of the pin contact displaces the movable contact in a direction away from the fixed contact.

  Here, the axial center of the rod-shaped external antenna and the axial center of the plug may be orthogonal to each other, and the base end portion of the external antenna and the base end portion of the plug are coupled by, for example, a connection fitting. The external antenna may be directly connected to the plug or may be connected via a relatively short coaxial cable. In the antenna connector according to the invention of (2), this coaxial cable is also included in the external antenna.

  The movable contact may be a leaf spring or a bellows contact made by bending a thin plate into a shape that provides uniform “spring” characteristics. The movable contact may be composed of a stator and a mover. For example, the stator of the movable contact may be “soldered” and fixed to the printed circuit board. The movable element of the movable contact applies a constant contact pressure to the fixed contact, that is, the movable contact is elastically contacted and electrically connected.

  The fixed contact may be a plate body, the base end portion may be “soldered” and fixed to the printed circuit board, and the contact of the movable contact is biased to the distal end portion.

  The movable contact and the fixed contact have conductivity, and a conductive metal thin plate developed on the band plate is formed to obtain a contact having a desired shape. The movable contact and the fixed contact are preferably made of a material having excellent conductivity and stretchability, such as a copper alloy, but is not limited to a copper alloy.

  When using the internal antenna, the movable contact and the fixed contact may be electrically connected, and the movable contact is in contact with the fixed contact and is turned on. When a force for displacing the movable contact in a direction away from the fixed contact is applied, the movable contact is in an off state in which it is electrically disconnected from the fixed contact. Thus, the movable contact and the fixed contact constitute an electrical switch.

  The plug may be a high-frequency coaxial connector, and a pin contact at the center is surrounded by a first cylindrical contact via an insulator (dielectric). The socket may be a high-frequency coaxial connector, and a movable contact and a fixed contact arranged inside are surrounded by a second cylindrical contact via a housing (insulator). The first and second cylindrical contacts are generally called external contacts, and the leakage of high-frequency current flowing through the pin contact at the center can be prevented by connecting and contacting the plug and the socket.

  The first shell may constitute an outer shell of the plug, for example, a part of an antenna cover described later. The second shell may constitute an outer shell of the socket, may be constituted by a part of a cover of a PC card described later, or may be constituted by a single shell and attached to a portable electronic device.

  The protrusion provided on the first shell may be a stud, and is connected to a spiral groove provided on the second shell to assist the connection between the plug and the socket. A connection mechanism that uses a stud along the spiral groove (guided) to quickly connect the plug and socket is called a bayonet coupling and locks together at a limited rotation angle. it can.

  However, a general high-frequency coaxial connector is a bayonet coupling that is connected by inserting a plug into a socket and turning it in one direction. Then, the plug can be separated from the socket by rotating in the other direction.

  On the other hand, in the antenna connector according to the invention of (2), the plug is not easily separated from the socket. The plug is only allowed to spiral with respect to the socket. In the antenna connector according to the invention of (2), for example, in a state where the external antenna is erected, the plug and the socket may be relatively close and the switch may be turned off, and the internal antenna is switched to the external antenna. Can be switched. When the external antenna is turned upside down, the plug and the socket are relatively separated from each other, the switch may be turned on (contacted), and the external antenna can be switched to the internal antenna.

  The connector for an antenna according to the invention of (2) includes a plug and a socket with a switch so that the plug provided with the external antenna and the socket with a switch are rotationally coupled to each other with difficulty in separation, and the rotational movement of the plug is converted into a forward and backward movement. Since the bayonet coupling is configured and the switch provided in the socket is switched, it is easy to switch between the internal antenna and the external antenna, and an antenna connector capable of directly connecting a relatively short rod-shaped external antenna can be provided.

  (3) The antenna connector according to (2), wherein the one or more protrusions include a pair of protrusions protruding in opposite directions, and the spiral grooves are provided in a pair so as to face each other.

  (4) The antenna connector according to (2) or (3), wherein the first shell includes semicircular arc-shaped first and second divided cylinders divided in half along a center line.

  (5) The antenna connector according to any one of (2) to (4), wherein the second shell includes semicircular arc-shaped third and fourth divided cylinders divided in half along a center line. .

  (6) The plug further includes first and second antenna covers that cover the external antenna and are divided in half along a center line thereof, and the first and second divided cylinders include the first and second cylinders, respectively. The antenna connector according to (4), which constitutes a part of the second antenna cover.

  The antenna connector according to the invention of (6) has an effect that the external antenna is not soiled because the plug includes an antenna cover that covers the external antenna.

  (7) A PC card for wireless communication including the antenna connector according to any one of (1) to (6).

  (8) A portable electronic device including the antenna connector according to any one of (1) to (6).

  In the antenna connector according to the present invention, in a state where the external antenna is erected, the plug and the socket may be relatively close to each other, and the switch constituted by the movable contact and the fixed contact may be turned off. It can be switched to an antenna. When the external antenna is turned upside down, the plug and the socket are relatively separated from each other and the switch may be turned on, and the external antenna can be switched to the internal antenna.

  In the antenna connector according to the present invention, the plug provided with the external antenna and the socket with the switch are rotationally coupled so as to be difficult to separate from each other, and the plug and the socket with the switch are connected to each other so that the rotational movement of the plug is converted into the forward and backward movement. In this configuration, since the switch provided in the socket is switched, it is easy to switch between the internal antenna and the external antenna, and an antenna connector that can directly connect a relatively short rod-shaped external antenna can be provided.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective external view showing an embodiment of an antenna connector (hereinafter abbreviated as a connector) according to the present invention. FIG. 2 is a perspective exploded view of the connector according to the embodiment. FIG. 3 is a perspective external view of the connector according to the embodiment, in which a plug and a socket are separated from each other. FIG. 4 is an enlarged perspective external view of the main part of the connector according to the embodiment, in which the plug and the socket are separated. FIG. 5 is an enlarged perspective external view of a main part of the connector according to the embodiment, in which a plug and a socket are coupled to each other.

  FIG. 6 is a perspective external view of the connector according to the embodiment, and is a state diagram in which an external antenna is erected. FIG. 7 is a perspective exploded view of a socket in the connector according to the embodiment. FIG. 8 is a cross-sectional view of a main part of the connector according to the embodiment, in which a switch provided in the socket is turned on. FIG. 9 is a cross-sectional view of the main part of the connector according to the embodiment, in which the switch provided in the socket is turned off.

  First, the configuration of the connector according to the present invention will be described. 1 to 3, the connector 10 includes a plug 1 and a socket 2. The plug 1 projects a rod-shaped external antenna 3 in a direction orthogonal to the axial direction. The socket 2 has a switch 20 constituted by a movable contact 2a and a fixed contact 2b with which the movable contact 2a abuts elastically. The switch 20 is connected to an internal antenna 4b disposed inside the PC card 4 (see FIGS. 7 to 9).

  In FIG. 2, the socket 2 is attached to one end side of the PC card 4. A connection terminal 4 a is provided on the other end side of the PC card 4. The PC card 4 includes a printed circuit board 4c, and an internal antenna 4b including a chip antenna is mounted on the printed circuit board 4c. The signal line of the internal antenna 4b is pattern-connected to the fixed contact 2b. An internal circuit (for example, a radio circuit) provided in the PC card 4 is pattern-connected to the movable contact 2a.

  1 to 3, the plug 1 includes a pin contact 11, a first cylindrical contact 12, and a cylindrical first shell 13 (see FIGS. 8 and 9). The pin contact 11 is connected to the signal line of the external antenna 3 and protrudes in the axial direction. The first cylindrical contact 12 is connected to the ground of the external antenna 3 and surrounds the pin contact 11 concentrically. The 1st shell 13 has covered the 1st cylindrical contact 12 so that insulation is possible, and constitutes the outer shell (refer to Drawing 8 and Drawing 9).

  7 to 9, the socket 2 has a cylindrical housing 21, a second cylindrical contact 22, and a cylindrical second shell 23. The housing 21 has an insertion hole 21a into which the pin contact 11 is inserted on one surface. The housing 21 has the movable contact 2a and the fixed contact 2b disposed therein. The second cylindrical contact 22 includes the housing 21 coaxially. Further, the outer periphery of the second cylindrical contact 22 is in contact with the inner periphery of the first cylindrical contact 12. The second shell 23 surrounds the second cylindrical contact 22, and the first shell 13 is inserted into the second shell 23 (see FIG. 3).

  1 to 4, the first shell 13 is provided with a protrusion 13 s that protrudes in a direction orthogonal to the axial direction. The second shell 23 is provided with a helical groove 23s that guides the protrusion 13s. When the plug 1 is rotated by a predetermined angle, the tip end portion of the pin contact 11 displaces the movable contact 2a in a direction away from the fixed contact 2b (see FIG. 9).

  In FIG. 2, the axis center of the external antenna 3 and the axis center of the plug 1 are orthogonal to each other. Then, the base end portion of the external antenna 3 and the base end portion of the plug 1 are coupled by a connection fitting 31. The external antenna 3 is connected via a relatively short coaxial cable 3a. A coaxial cable 3 a can also be included in the external antenna 3.

  1 to 4, the first shell 13 is composed of first and second divided cylinders 13 a and 13 b having a semicircular arc shape divided in half along the center line. The plug 1 includes an antenna cover 5 that covers the external antenna 3. The antenna cover 5 includes a pair of first and second antenna covers 5a and 5b divided in half along the center line. The first and second divided cylinders 13a and 13b constitute part of the first and second antenna covers 5a and 5b.

  On the other hand, in FIGS. 1 to 4, the second shell 23 is composed of third and fourth divided cylinders 23 a and 23 b having a semicircular arc shape divided in half along the center line. A cover 6 is provided that surrounds one end of the PC card 4 in an insulating manner. The cover 6 includes a pair of third and fourth covers 6a and 6b divided in half. The third and fourth divided cylinders 23a and 23b constitute part of the third and fourth divided cylinders 23a and 23b.

  7 to 9, the movable contact 2 a is composed of a movable element 211 and a stator 212. The stator 212 of the movable contact 2a is “soldered” and fixed to the printed circuit board 4c. The movable element 211 of the movable contact 2a applies a constant contact pressure to the fixed contact 2b, that is, the movable contact 2a is elastically contacted and electrically connected.

  7 to 9, the fixed contact 2b is formed of a plate. The base end of the fixed contact 2b is “soldered” and fixed to the printed circuit board 4c. Then, the contact of the movable contact 2a is urged to the tip of the fixed contact 2b.

  7 to 9, the housing 21 has a cylindrical portion 21b on one end side and a square column portion 21c on the other end side. A part of the outer periphery of the cylindrical portion 21b forms a string, and is arranged so that the fixed contact 2b abuts on the inner wall of the cylindrical portion 21b. Further, the square column portion 21c is provided with a pair of grooves 21d and 21d in opposite directions. And a pair of groove | channels 21d * 21d can be fitted to both wing | blades of the notch 4d formed in the edge part of the printed circuit board 4c.

  7 to 9, the second cylindrical contact 22 has one end side forming a cylindrical portion 22b and the other end side forming a quadrangular prism portion 22c. And a pair of tab part 22d * 22d is extended to the both wing | blades of the square pillar part 22c. The inside of the second cylindrical contact 22 is hollow, and the housing 21 is housed inside. The pair of tab portions 22d and 22d are “soldered” and fixed to the printed board 4c, whereby the housing 21 is also held on the printed board 4c. In addition, the 2nd cylindrical contact 22 is connected to the ground pattern of the printed circuit board 4c (refer FIG. 2).

  Next, the operation of the connector according to the present invention will be described. 1 to 4, a connector 10 is rotationally coupled to a socket 1 provided with an external antenna 3 and a socket 2 provided with a switch 20 (see FIG. 7) connected to the internal antenna 4b so as to be difficult to separate. Further, the cam device is constituted by the plug 1 and the socket 2 so that the rotational motion of the plug 1 is converted into the forward and backward motion. The switch 20 can be switched by rotating the external antenna 3.

  In FIG. 7, when the internal antenna 4b is used, the movable contact 2a and the fixed contact 2b may be electrically connected, and the movable contact 2a contacts the fixed contact 2b and is turned on (FIG. 8). reference). Then, as shown in FIG. 9, when a force for moving the movable contact 2a away from the fixed contact 2b is applied, the movable contact 2a is in an off state in which it is electrically disconnected from the fixed contact 2b. Thus, the movable contact 2a and the fixed contact 2b constitute an electrical switch.

  As shown in FIG. 6, in the state where the external antenna 3 is erected, the connector 10 is relatively close to the plug 1 and the socket 2, and the switch 20 is turned off (see FIG. 9). Then, the internal antenna 4b can be switched to the external antenna 3 (see FIG. 2). On the other hand, as shown in FIG. 1, in a state where the external antenna 3 is turned upside down, the plug 1 and the socket 2 are relatively separated from each other, and the switch 20 is turned on (see FIG. 8). Then, the external antenna 3 can be switched to the internal antenna 4b (see FIG. 2).

  The antenna connector according to the present invention is configured such that the plug provided with the external antenna and the socket with the switch are rotationally coupled to each other with difficulty in separation, and the plug device and the socket with the switch are used to convert the rotational movement of the plug into the forward and backward movement. Since the switch on the socket is switched by rotating the external antenna, it is easy to switch between the internal antenna and the external antenna, and there is an antenna connector that can directly connect a relatively short rod-shaped external antenna. Can be provided.

  In the antenna connector according to the present invention, the plug is not easily separated from the socket. The plug is only allowed to spiral with respect to the socket. In the antenna connector according to the present invention, in a state where the external antenna is erected, the plug and the socket may be relatively close to each other, and the switch may be turned off, so that the internal antenna can be switched to the external antenna. When the external antenna is turned upside down, the plug and the socket are relatively separated from each other, the switch may be turned on (contacted), and the external antenna can be switched to the internal antenna.

  The antenna connector according to the present invention is a bayonet coupling between the plug and the socket with the switch so that the plug provided with the external antenna and the socket with the switch are rotationally coupled so as to be difficult to separate and the rotational movement of the plug is converted into the forward and backward movement. Since the switch provided in the socket is switched, it is easy to switch between the internal antenna and the external antenna, and an antenna connector that can directly connect a relatively short rod-shaped external antenna can be provided.

  The antenna connector according to the present invention may be provided in a PC card for wireless communication, or may be provided in a portable electronic device, so that switching between an internal antenna and an external antenna is easy.

1 is a perspective external view showing an embodiment of an antenna connector according to the present invention. It is a perspective exploded view of the antenna connector according to the embodiment. FIG. 2 is a perspective view of the antenna connector according to the embodiment, in which a plug and a socket are separated. FIG. 3 is an enlarged perspective view of a main part of the antenna connector according to the embodiment, in which a plug and a socket are separated. FIG. 3 is an enlarged perspective external view of a main part of the antenna connector according to the embodiment, in which a plug and a socket are coupled to each other. FIG. 3 is a perspective external view of the antenna connector according to the embodiment, in which the external antenna is erected. FIG. 3 is an exploded perspective view of a socket in the antenna connector according to the embodiment. FIG. 4 is a cross-sectional view of a main part of the antenna connector according to the embodiment, in which a switch provided in the socket is turned on. FIG. 4 is a cross-sectional view of a main part of the antenna connector according to the embodiment, in which a switch provided in the socket is in an off state. It is a perspective external view which shows the connection state of the connector for antennas by a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plug 2 Socket 2a Movable contact 2b Fixed contact 3 External antenna 4b Internal antenna 10 Connector 11 Pin contact 12 1st cylindrical contact 13 1st shell 13s Protrusion 20 Switch 21 Housing 22 2nd cylindrical contact 23 2nd shell 23s Helical groove

Claims (8)

  A cam device is provided between the plug and the socket so that a plug provided with an external antenna and a socket provided with a switch connected to the internal antenna are rotationally coupled so as to be difficult to separate, and the rotational movement of the plug is converted into a forward / backward movement. And an antenna connector for switching the switch by rotating the external antenna. A plug that projects a rod-shaped external antenna in a direction perpendicular to the axial direction;
A switch comprising a movable contact and a fixed contact with which the movable contact abuts elastically, and the switch includes a socket connected to the internal antenna;
The plug includes a pin contact protruding in an axial direction connected to a signal line of the external antenna, a first cylindrical contact concentrically surrounding the pin contact connected to the ground of the external antenna, A cylindrical first shell that covers the cylindrical contact insulatively and forms an outer shell,
The socket has a cylindrical housing in which an insertion hole into which the pin contact is inserted is opened on one surface, and the movable contact and the fixed contact are disposed inside, and the housing is coaxially provided on the outer periphery. A second cylindrical contact that contacts the inner periphery of the first cylindrical contact; and a cylindrical second shell that surrounds the second cylindrical contact and into which the first shell is inserted and fitted,
The first shell is provided with one or more protrusions protruding in a direction orthogonal to the axial direction,
The second shell is provided with a spiral groove for guiding the protrusion,
When the plug is rotated by a predetermined angle, the tip end portion of the pin contact displaces the movable contact in a direction away from the fixed contact.   The antenna connector according to claim 2, wherein the one or more protrusions are formed of a pair of protrusions protruding in opposite directions, and the spiral grooves are provided in a pair so as to face each other.   4. The antenna connector according to claim 2, wherein the first shell includes first and second divided cylinders having a semicircular arc shape divided in half along a center line. 5.   5. The antenna connector according to claim 2, wherein the second shell includes third and fourth divided cylinders having a semicircular arc shape divided in half along a center line. 6. The plug further includes first and second antenna covers that cover the external antenna and are divided in half along a center line thereof,
The antenna connector according to claim 4, wherein the first and second divided cylinders constitute a part of the first and second antenna covers.   A PC card for wireless communication comprising the antenna connector according to claim 1.   A portable electronic device comprising the antenna connector according to claim 1.

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