JP6135834B1 - Electrical connector and electrical connector locking member - Google Patents

Abstract

An electrical connector and an electrical connector locking member that firmly maintain a fitting state while ensuring workability are provided. An electrical connector (1) includes a plug connector (10) and a lock member (30). The plug connector (10) includes a conductive outer conductor shell (11) that is electrically connected to a contact of a mating connector, and is externally provided. The conductor shell 11 has a cylindrical fitting portion 11 a that is fitted to the ground contact member 103, and the outer diameter of the fitting portion 11 a is configured so that the diameter can be increased when the ground contact member 103 is inserted and removed. The lock member 30 includes a restriction portion 32 configured to be able to restrict the diameter of the fitting portion 11a and a guide portion 33 that guides the movement of the restriction portion 32 with respect to the fitting portion 11a. Then, the restricting portion 32 is guided so that the restricting position for restricting the diameter expansion of the fitting portion 11a and the standby position not restricting can be moved. [Selection] Figure 1

Description

  The present disclosure relates to an electrical connector and a locking member of the electrical connector.

  In the electrical connector, it is important to firmly maintain the fitting state with the mating connector to be electrically connected. Generally, the fitting state of the electrical connector with the mating connector is maintained by the spring force or the like of each contact provided (see, for example, Patent Document 1).

JP-A-2005-183212

  Here, depending on the use of the electrical connector, it may be desired to maintain the fitting state with the mating connector more firmly. In order to maintain the fitting state more firmly, for example, it is conceivable to use an adhesive after the fitting. However, when an adhesive is used, it is difficult to remove the fitting from the fitting state. There is a risk that a series of operations related to insertion / extraction of and the maintenance of the fitted state becomes complicated. Therefore, the present disclosure describes an electrical connector that securely maintains a fitting state while ensuring workability, and a lock member for the electrical connector.

An electrical connector according to one aspect of the present disclosure includes a first connector and a lock member attached to the first connector, and the first connector is electrically connected to a contact of a second connector that is a counterpart connector. The first contact has a cylindrical fitting portion fitted to the contact of the second connector, and the outer diameter of the fitting portion is the contact of the second connector. The lock member is configured to be able to increase the diameter when inserted into and extracted from, and the lock member is configured to be capable of restricting the diameter of the fitting portion at the time of removal of the fitting portion fitted to the contact of the second connector. A guide portion that guides the movement of the restricting portion relative to the fitting portion, and the restricting portion has a pair of arm portions that restrict the expansion of the fitting portion by sandwiching the fitting portion from the outside in the radial direction. and, guide portion, regulation of the enlarged diameter of the fitting portion A regulating position for, so as to be movable with each other between a standby position that does not perform the restriction, to guide the regulating unit.

  In the electrical connector according to the present disclosure, the restricting portion of the lock member is configured to be able to restrict the outside diameter of the fitting portion. Thereby, it is suppressed that the fitting part after a fitting with a 2nd connector expands, and the fitting state of a 1st connector and a 2nd connector can be maintained firmly. Further, in the electrical connector according to the present disclosure, the guide portion of the lock member guides the restriction portion so as to be movable between a restriction position where the diameter of the fitting portion is restricted and a standby position where the restriction is not restricted. . Thereby, for example, when inserting and removing the fitting portion with respect to the contact, the restriction portion is used as a standby position to perform the insertion and removal easily, and the fitting portion of the first connector and the contact of the second connector are fitted. In this case, it is possible to strengthen the fitting state with the restricting portion as the restricting position. That is, the fitting state between the first connector and the second connector can be firmly maintained while ensuring workability such as insertion and removal of the first connector.

  The restricting portion may have a pair of arm portions that restrict the diameter of the fitting portion by sandwiching the fitting portion from the outside in the radial direction. By sandwiching the fitting portion from the outside in the radial direction, which is the direction in which the diameter of the fitting portion widens, the diameter of the fitting portion can be effectively restricted. That is, the fitting state between the first connector and the second connector can be maintained more firmly.

  The interval between the pair of arm portions may be narrower than the outer diameter of the fitting portion in the expanded state. Thereby, the diameter expansion of a fitting part can be easily controlled by pinching a fitting part between a pair of arm parts.

  The guide part may guide the movement of the restricting part in a direction crossing the fitting direction of the fitting part. By guiding the movement of the restricting portion in a direction different from the fitting direction, the fitting work and the locking work can be clearly distinguished as different works, and workability can be improved.

  A 1st connector is a connector attached to the end of a cable, and a guide part may guide the movement of the control part to the axial direction of a cable. By guiding the movement of the restriction portion in the axial direction of the cable, the movement of the restriction portion is not obstructed by the cable or the like, the restriction portion can be easily moved, and workability can be improved.

  The first connector includes a lid portion that covers a surface opposite to a side that receives the contact of the second connector in the fitting direction of the fitting portion, and a rail portion that is provided on the lid portion and extends in the axial direction. The portion may have a slide portion that extends in the axial direction and guides the movement of the restricting portion in the axial direction by sliding along the rail portion. When the slide portion moves along the rail portion of the first connector, the restriction portion can be easily moved with respect to the fitting portion.

  One of the slide part and the rail part has a first projecting part protruding toward the other, and the other is engaged with the first projecting part after the position of the restricting part reaches the restricting position in the sliding of the slide part. You may have a mating engaging part. By engaging the first protrusion with the engaging portion, it is possible to give a click feeling to the worker, and to make the worker sense that the position of the restricting portion is the restricting position. it can.

  The guide portion has a flat plate portion that faces the pair of arm portions in the fitting direction and holds the slide portion and covers the lid portion, and the flat plate portion has an opening. Good. Accordingly, when the slide portion is slid, the positions of the pair of arm portions (restriction portions) with respect to the first connector can be visually recognized from the opening, so that the operator can sense the position of the restriction portion. .

  The guide portion has a pair of extension portions that extend continuously to the pair of arm portions of the restriction portion, and the pair of extension portions are arranged so that the fitting portion is radially outward when the restriction portion is disposed at the standby position. The interval between the pair of extension portions may be wider than the interval between the pair of arm portions. The extension part that extends continuously to the arm part and sandwiches the fitting part in a state where the restricting part is arranged at the standby position makes the movement of the arm part (regulating part) relative to the fitting part more appropriate. Can be guided to. Further, when the interval between the pair of extension portions is wider than the interval between the pair of arm portions, the restriction portion is disposed at the standby position, that is, the extension portion is fitted in the state where the extension portion is sandwiched. The diameter of the part can be increased.

  The guide portion has a pair of extension portions that extend continuously to the pair of arm portions of the restriction portion, and the pair of extension portions are arranged so that the fitting portion is radially outward when the restriction portion is disposed at the standby position. The rigidity of the pair of extension portions may be lower than the rigidity of the pair of arm portions. The extension part that extends continuously to the arm part and sandwiches the fitting part in a state where the restricting part is arranged at the standby position makes the movement of the arm part (regulating part) relative to the fitting part more appropriate. Can be guided to. In addition, since the rigidity of the extension part is lower than the rigidity of the arm part, the diameter of the fitting part can be increased in a state where the restricting part is disposed at the standby position, i.e., in a state where the extension part sandwiches the fitting part. Can be tolerated.

  At least one of the pair of extension portions has a second projection portion protruding toward the other, and the second projection portion is provided at an end portion on the opposite side of the extension portion where the arm portion continues. And it may protrude so that a fitting part may block between a pair of extension parts by contacting with a fitting part. Since the second protrusion is provided at the end of the extension, and the second protrusion protrudes so as to prevent the fitting portion from passing, the lock member can be prevented from being detached from the first connector. .

  The first connector is a plug connector attached to one end of the coaxial cable, the second connector is a receptacle connector that is mounted on a board electrically connected to the coaxial cable and is fitted to the plug connector, The contact of the connector may be a ground contact connected to the ground terminal of the substrate. Thereby, the fitting state of the plug connector of the coaxial cable and the receptacle connector can be firmly maintained using the lock member.

A lock member according to one aspect of the present disclosure is a cylindrical member that can be electrically connected to and fitted into a contact of a counterpart connector, and whose outer diameter can be increased when the electrical connector is inserted into and removed from the counterpart connector. And a guide part that guides movement of the restriction part relative to the fitting part. The restriction part sandwiches the fitting part from the outside in the radial direction. Has a pair of arms that regulate the expansion of the fitting part, and is configured so that the diameter of the fitting part can be restricted when the fitting part fitted to the contact of the mating connector is removed. The guide portion guides the restricting portion so as to be able to move between a restricting position where the diameter of the fitting portion is restricted and a standby position where the fitting is not restricted.

  According to the present disclosure, it is possible to provide an electrical connector and an electrical connector lock member that firmly maintain a fitting state while ensuring workability.

FIG. 1 is a perspective view of an electrical connector according to an embodiment of the present invention. 2 is a diagram showing a plug connector included in the electrical connector of FIG. 1, wherein (a) is a perspective view, (b) is a side view, and (c) is a line (c)-(c) of (b). (D) is a bottom view taken along the line. 3A and 3B are diagrams showing a lock member included in the electrical connector of FIG. 1, wherein FIG. 3A is a perspective view, FIG. 3B is a perspective view from a different direction from FIG. d) is a rear view. 4A and 4B are diagrams showing the electrical connector of FIG. 1, in which FIG. 4A is a side view, and FIG. 4B is a cross-sectional view taken along line (b)-(b) of FIG. 5A and 5B are diagrams showing the electrical connector in which the lock member is in the standby position, where FIG. 5A is a perspective view and FIG. 5B is a bottom view. 6A and 6B are diagrams showing the electrical connector in which the lock member is in the restricting position, where FIG. 6A is a perspective view and FIG. 6B is a bottom view. 7A and 7B are diagrams for explaining a configuration for allowing an operator to sense the position, in which FIG. 7A is a side view, FIG. 7B is a perspective view with a part of the lock member cut, and FIG. FIG. 8A and 8B are diagrams for explaining a configuration for allowing the operator to sense the position, where FIG. 8A is a side view, FIG. 8B is a perspective view with a part of the lock member cut, and FIG. FIG. FIGS. 9A and 9B are diagrams for explaining a configuration for preventing the electrical connector from being detached, in which FIG. 9A is a perspective view, and FIGS. 9B and 9C are partially enlarged views of FIG. 10A and 10B are diagrams showing the electrical connector when mated with the receptacle connector, where FIG. 10A is a perspective view, FIG. 10B is a side view, and FIG. 10C is a line (c)-(c) in FIG. (D) is sectional drawing which followed the (d)-(d) line | wire of (b). FIGS. 11A and 11B are views showing the electrical connector locked after being fitted to the receptacle connector, where FIG. 11A is a perspective view, FIG. 11B is a side view, and FIG. 11C is a view (c)-(c) in FIG. ) Is a cross-sectional view along the line.

  Since the embodiment according to the present disclosure described below is an example for explaining the present invention, the present invention should not be limited to the following contents. In the following description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

[Outline of electrical connector]
The outline of the electrical connector will be described with reference to FIG. As shown in FIG. 1, the electrical connector 1 includes a plug connector 10 (first connector) and a lock member 30. The electrical connector 1 is a connector that electrically connects a cable-shaped signal transmission medium to an electrical circuit on a substrate, and is, for example, an RF (Radio Frequency) connector. The signal transmission medium is a medium for transmitting signals of various electronic devices such as mobile phones, and is, for example, a coaxial cable SC. A board | substrate is the printed wiring board 200, for example. That is, the electrical connector 1 of this embodiment is a coaxial electrical connector that electrically connects the coaxial cable SC to the electrical circuit of the printed wiring board 200. In the electrical connector 1, the plug connector 10 attached to the terminal portion of the coaxial cable SC is engaged with the receptacle connector 100 mounted on the printed wiring board 200, whereby the electrical circuit of the coaxial cable SC and the printed wiring board 200 is Are electrically connected.

  In the following description, the axial direction of the coaxial cable SC is “X direction”, and when the plug connector 10 and the receptacle connector 100 are fitted, the fitting direction of the plug connector 10 and the receptacle connector 100 is “Z direction”. The direction perpendicular to the X direction and the Z direction may be described as the “Y direction”. In the X direction, the end of the coaxial cable SC on the side where the plug connector 10 is attached may be described as a “front end” and the opposite end may be described as a “rear end”. In the Z direction, for example, the plug connector 10 side in the state shown in FIG. 1 may be described as “upper” and the receptacle connector 100 side as “lower”.

[Plug connector]
Next, details of the plug connector 10 will be described with reference to FIGS. 2 (a) to 2 (d). The plug connector 10 is a connector attached to the front end portion (one end side) of the coaxial cable SC. As shown in FIG. 2A to FIG. 2D, the plug connector 10 includes a conductive outer conductor shell 11 (first contact), an insulating insulating housing 12, and an inner conductor contact 13. Prepare. Hereinafter, the coaxial cable SC to which the plug connector 10 is attached, and the outer conductor shell 11, the insulating housing 12, and the inner conductor contact 13 constituting the plug connector 10 will be described in detail.

(coaxial cable)
The coaxial cable SC is used in a small terminal to transmit a high-frequency signal between various signal processing elements (for example, an antenna, a control chip for controlling the antenna, a substrate, etc.) incorporated in a small terminal such as a mobile phone. Wiring used. The coaxial cable SC is provided around the inner conductor SC1 (see FIG. 2C), an insulator provided around the inner conductor SC1, an outer conductor provided around the insulator, and the outer conductor. And a protective coating. In the coaxial cable SC, the outer conductor, the insulator, and the inner conductor SC1 are exposed stepwise in this order as it goes toward the tip to which the plug connector 10 is attached.

  In the present embodiment, the internal conductor SC1 is electrically connected to the signal contact member 102 (described later) of the receptacle connector 100 connected to the signal terminal 201 of the printed wiring board 200 via the internal conductor contact 13. A signal transmission circuit is configured. Further, the outer conductor of the coaxial cable SC is electrically connected to the ground contact member 103 (described later) of the receptacle connector 100 connected to the ground terminal 202 of the printed wiring board 200 via the outer conductor shell 11. A ground circuit is configured.

(External conductor shell)
The outer conductor shell 11 is a conductive ground contact member that is electrically connected to the outer conductor of the coaxial cable SC. The outer conductor shell 11 is provided so as to cover the periphery of the insulating housing 12 as shown in FIG. The external conductor shell 11 is electrically connected to the ground contact member 103 (contact, see FIG. 1) of the receptacle connector 100 (second connector), which is a mating connector, and constitutes a ground circuit. The outer conductor shell 11 is made of, for example, a thin plate metal member. The outer conductor shell 11 has a fitting portion 11a, a lid portion 11b, and a rail portion 11e.

  The fitting portion 11a is formed in a cylindrical shape (cylindrical shape) whose axial direction is the Z direction, and the insulating housing 12 is accommodated coaxially in the cylindrical hole. The inner peripheral surface of the fitting portion 11 a is in contact with the outer peripheral surface of the insulating housing 12. On the lower end side of the fitting portion 11a, there is a protruding portion 11c that protrudes radially inward (center side of the cylindrical shape of the fitting portion 11a) over the entire circumference (see FIG. 2C). The fitting portion 11 a is fitted to the ground contact member 103 of the receptacle connector 100 by engaging the protrusion 11 c with a recess 103 a (see FIG. 1) formed on the outer periphery of the ground contact member 103 of the receptacle connector 100. (Details will be described later). The fitting portion 11a has a configuration in which the outer diameter is increased when the receptacle connector 100 is inserted into and removed from the ground contact member 103. The outer diameter of the fitting portion 11a when the diameter is not expanded is, for example, about 2.5 mm, and the outer diameter when the diameter is expanded is, for example, about 2.7 mm. The fitting portion 11a can be inserted into and removed from the ground contact member 103 only after the diameter is increased, and cannot be inserted into and removed from the ground contact member 103 when the diameter is not increased. .

  The cover part 11b is a part which covers the upper surface of the fitting part 11a. The lid portion 11b is provided integrally with the fitting portion 11a. The lid portion 11b is provided with a rail portion 11e extending in the X direction.

  The lid part 11b includes a fixing part 11f and a cover part 11g. The fixing part 11f is a part for attaching the plug connector 10 to the coaxial cable SC. The fixing part 11f is provided along the coaxial cable SC. The fixing portion 11f is configured to be bendable, and is a plate-like member that is formed in a U shape before being folded. The fixing portion 11f is fixed to the coaxial cable SC by being bent so as to cover the outer conductor of the coaxial cable SC and the outer periphery of the protective coating, and attaches the plug connector 10 to the coaxial cable SC. The cover portion 11g covers the opening portion on the upper surface of the fitting portion 11a so as to be closed.

  The rail portion 11e is provided integrally with the cover portion 11g and extends along the X direction. The rail part 11e is provided substantially along the X direction of the cover part 11g. The rail portion 11e includes a first rail 11h provided near the tip of the plug connector 10 in the X direction and a second rail 11i provided behind the first rail 11h in the X direction. Both the first rail 11h and the second rail 11i are provided at both ends of the cover portion 11g in the Y direction. As shown in FIG. 7A, the tip 11x in the X direction of the first rail 11h is substantially coincident with the tip 11y in the X direction of the slit formed in the fitting portion 11a in the X direction. . As shown in FIG. 7A, when the lock member 30 is moved relative to the plug connector 10, the rail portion 11e (particularly, the first rail 11h) is covered by the slide portion 39 of the lock member 30 ( Therefore, it is difficult to visually grasp the position of the lock member 30 with respect to the rail portion 11e. In this respect, since the tip 11y of the slit of the fitting portion 11a that is not covered by the slide portion 39 is substantially coincident with the tip 11x of the first rail 11h of the rail portion 11e in the X direction, the lock member By visually grasping which position 30 is located with respect to the tip 11y of the slit of the fitting part 11a, indirectly, the position of the first protrusion 39b of the lock member 30 with respect to the rail part 11e. You can grasp what is in the. As shown in FIG. 6B, the slit tip 11y of the fitting portion 11a is in contact with a pair of arm portions 37 and 38 (described later) in the fitting portion 11a (a pair of arms at the restricting position). The portion 37 a is in contact with the portions 37, 38) and is located on the distal end side in the X direction of the fitting portion 11 a.

  As shown in FIG. 2A, the first rail 11h is continuous with the first connecting portion 11j, which is a connecting portion with the cover portion 11g, and the first connecting portion 11j, and in the Z direction (fitting direction). And a first wall portion 11k that extends. The second rail 11i includes a second connecting part 11l that is a connecting part to the cover part 11g, a second wall part 11m that is continuous with the second connecting part 11l and extends in the Z direction (fitting direction), and a second wall. A cover portion 11n that is continuous with the portion 11m and is bent so as to cover the outer periphery of the outer conductor of the coaxial cable SC.

  The first wall portion 11k and the second wall portion 11m are portions that come into contact with the lock member 30 when a slide portion 39 (described later) of the lock member 30 slides. The first wall portion 11k and the second wall portion 11m are not continuous in the X direction, and a notch portion 11o serving as an engaging portion is formed therebetween. The notch portion 11o is located on the rear end side in the X direction of the fitting portion 11a. Each of the first rail 11h and the second rail 11i is a plate-like member provided integrally with the cover portion 11g. For example, the first connection described above is obtained by bending both ends in the Y direction of the cover portion 11g. A portion 11j, a first wall portion 11k, a second connecting portion 11l, a second wall portion 11m, and a cover portion 11n are formed.

(Insulated housing)
The insulating housing 12 is formed in a cylindrical shape, and is an insulator for holding the inner conductor contact 13 inside and insulating between the outer conductor shell 11 and the inner conductor contact 13 (FIG. 2C). reference). The outer peripheral surface of the insulating housing 12 is in contact with the inner peripheral surface of the fitting portion 11a.

(Internal conductor contact)
The inner conductor contact 13 is attached to the inside of the insulating housing 12 by press fitting or the like. The inner conductor contact 13 includes a connection portion 13a that connects the inner conductor SC1 of the coaxial cable SC, and a pair of contact portions 13b that extend in the Z direction (fitting direction) from the connection portion 13a and are electrically connected to the inner conductor SC1. (See FIG. 2C). The pair of contact portions 13b is configured to be elastically displaceable in the Z direction, and contacts a signal contact member 102 (described later) of the receptacle connector 100.

[Lock member]
Next, details of the lock member 30 will be described with reference to FIGS. 3 (a) to 3 (d). The lock member 30 is attached to the plug connector 10. After the plug connector 10 and the receptacle connector 100 are fitted, the lock member 30 regulates the outer diameter of the fitting portion 11a of the plug connector 10 so that the plug connector 10 and the receptacle connector 100 are fitted. Is firmly maintained. The lock member 30 includes a main body portion 31, a restriction portion 32, and a guide portion 33. The lock member 30 is made of, for example, a thin plate metal member.

(Main body)
The main body portion 31 includes a flat plate portion 34 and a connecting portion 35. The flat plate portion 34 is a substantially rectangular flat plate provided so as to cover the lid portion 11b of the outer conductor shell 11, more specifically, the cover portion 11g (see FIG. 1). The flat plate portion 34 opposes a pair of arm portions 37 and 38 (described later) of the restricting portion 32 in the Z direction, and holds a slide portion 39 (described later) of the guide portion 33 (the slide portion 39 is connected). The flat plate portion 34 is formed with an opening 34a penetrating in the Z direction. The opening 34a is formed at a position where a pair of arm portions 37 and 38 (described later) can be visually recognized, and is formed, for example, on the distal end side of the central portion in the X direction in the flat plate portion 34. A convex portion 34 b that protrudes upward from the other portions of the flat plate portion 34 is provided behind the opening 34 a in the flat plate portion 34 in the X direction. By providing the convex portion 34b, the operability when the lock member 30 is slid is improved. The connecting portion 35 is a portion extending in the Z direction so as to connect the X direction tip of the flat plate portion 34 and the X direction tip of the restricting portion 32.

(Regulation Department)
The restricting portion 32 is a portion configured to be able to restrict the diameter expansion of the fitting portion 11a. More specifically, the restricting portion 32 is formed between the recess 103a of the ground contact member 103 and the fitting portion 11a when the fitting portion 11a fitted to the ground contact member 103 (see FIG. 1) of the receptacle connector 100 is removed. In order to maintain the engagement state with the protrusion part 11c, it is comprised so that diameter expansion of the fitting part 11a can be controlled. The restricting portion 32 faces the flat plate portion 34 in the Z direction and extends in the X direction parallel to the flat plate portion 34. The restricting portion 32 includes a distal end portion 36 that is continuous with the connecting portion 35, and a pair of arm portions 37 and 38 that are continuous with the distal end portion 36. The restricting part 32 restricts the diameter of the fitting part 11a in a state where the fitting part 11a is located in an area (enclosed area) defined by the tip part 36 and the pair of arm parts 37 and 38.

  The distal end portion 36 is a portion that contacts the distal end portion in the X direction of the fitting portion 11a and positions the fitting portion 11a when the diameter of the fitting portion 11a is restricted (the lock member 30 is a plug connector). 10 is a portion positioned at a restriction position described later). The distal end portion 36 has a shape corresponding to the cylindrical shape so as to come into contact with the fitting portion 11a having a cylindrical shape in a wide range. That is, the distal end portion 36 is formed so as to expand in the Y direction toward a pair of extension portions 41 and 42 described later (see FIG. 3C).

A pair of arm parts 37 and 38 restrict | limit the diameter expansion of the fitting part 11a by pinching the fitting part 11a from a radial direction (Y direction) outer side. The arm portion 37 extends in the X direction so as to be continuous with one end side of the tip portion 36 in the Y direction. The arm portion 38 extends in the X direction so as to be continuous with the other end side in the Y direction of the distal end portion 36. The interval between the pair of arm portions 37 and 38 is narrower than the outer diameter of the fitting portion 11a in the expanded state, for example, approximately the same as the outer diameter of the fitting portion 11a in the unexpanded state. The The “outer diameter of the fitting portion 11a” in the present embodiment is the same height as the pair of arm portions 37 and 38 (the same position in the Z direction) when the lock member 30 is attached to the plug connector 10. The outer diameter of the fitting part 11a.

  The lengths of the pair of arm portions 37 and 38 in the X direction are substantially equal to each other. As shown in FIG. 6B, the distal end in the state where the fitting portion 11 a is in contact with the distal end portion 36. The length is such that the fitting portion 11 a is generally accommodated in a region (region surrounded) defined by the portion 36 and the pair of arm portions 37 and 38. The length of the pair of arm portions 37 and 38 is an example, and the length in the X direction of the pair of arm portions 37 and 38 is any length as long as the diameter of the fitting portion 11a can be restricted. It may be a length. The pair of arm portions 37 and 38 are provided integrally with a pair of extension portions 41 and 42 (described later) of the guide portion 33.

(Guide part)
As shown in FIG. 3A, the guide part 33 is a part that guides the movement of the restricting part 32 with respect to the fitting part 11a. Guiding the movement includes not only guiding the movement to a certain area but also preventing the movement from the certain area. The guide part 33 guides the movement of the restricting part 32 in the axial direction (X direction) of the coaxial cable SC, which is a direction intersecting the fitting direction (Z direction) of the fitting part 11a. The guide portion 33 can move between a restriction position (see FIG. 6B) for restricting the diameter expansion of the fitting portion 11a and a standby position (see FIG. 5B) where no restriction is performed. As described above, the restricting portion 32 is guided. As described above, the restriction position and the standby position are relative positions of the restriction portion 32 with respect to the fitting portion 11a. The guide part 33 includes a slide part 39, a positioning part 40, and a pair of extension parts 41 and 42.

  As shown in FIG. 3A, the slide portion 39 is provided integrally with the flat plate portion 34, and extends along the X direction at a substantially central portion of the flat plate portion 34. The slide part 39 is provided at both ends of the flat plate part 34 in the Y direction. The slide portion 39 extends in the Z direction from the flat plate portion 34 toward the pair of arm portions 37 and 38 at both ends in the Y direction of the flat plate portion 34. The sliding portion 39 slides along the rail portion 11e in a state where an abutting surface 39a (see FIG. 4B) which is an inner wall surface in the Y direction is in contact with the rail portion 11e. Guide the movement of the restricting portion 32. The pair of slide portions 39, 39 slide along the rail portion 11e in a state where the pair of rail portions 11e, 11e of the outer conductor shell 11 and the cover portion 11g are accommodated in an area defined together with the flat plate portion 34. To do.

  The slide portion 39 has a first protrusion 39b (see FIG. 3B) that protrudes toward the rail portion 11e at a substantially central portion in the X direction on the contact surface 39a. The position of the first protrusion 39b in the X direction substantially coincides with the position of the rear end of the pair of arm portions 37 and 38 in the X direction.

  The positioning portion 40 is provided integrally with the flat plate portion 34 at both ends of the flat plate portion 34 in the Y direction, and is a pair of plate-like pieces provided at the rear of the slide portion 39 in the X direction. As shown in FIG. 3 (d), the positioning portion 40 extends downward so that the pair of plate-shaped pieces approach each other from the connecting portion with the flat plate portion 34 toward the lower end 40a. The lower end 40 a is disposed so as to be inside in the Y direction with respect to the inner wall surface of the slide portion 39 in the range of the height in the Z direction where the lower end 40 a is provided.

  The pair of extension portions 41 and 42 extend continuously to the pair of arm portions 37 and 38 of the restriction portion 32. That is, the extension part 41 extends in the X direction continuously with the arm part 37, and the extension part 42 extends in the X direction continuously with the arm part 38. As shown in FIG. 5B, the pair of extension portions 41 and 42 are arranged so as to sandwich the fitting portion 11a from the outside in the radial direction in a state where the restriction portion 32 is arranged at the standby position. The interval between the pair of extension portions 41 and 42 is wider than the interval between the pair of arm portions 37 and 38. The space | interval of a pair of extension parts 41 and 42 is wider than the outer diameter of the fitting part 11a of the state which is not diameter-expanded at least. Thereby, the fitting part 11a pinched | interposed into the pair of extension parts 41 and 42 from the outer side of radial direction can be diameter-expanded.

  As shown in FIG. 3C, the pair of extension portions 41 and 42 are rear ends in the X direction (the end portions on the opposite side to the portions continuous with the pair of arm portions 37 and 38 in the pair of extension portions 41 and 42). ) Have second projecting portions 43 and 44 projecting in opposite directions. The space | interval of the 2nd projection parts 43 and 44 is smaller than the outer diameter of the fitting part 11a in the state which is not diameter-expanded. When the second protrusions 43 and 44 come into contact with the fitting part 11a, the fitting part 11a passes between the pair of extension parts 41 and 42, and the lock member 30 is detached from the plug connector 10 in the X direction. Protrusions to block.

[Details of electrical connector]
Next, details of the electrical connector 1 including the plug connector 10 to which the lock member 30 is attached will be described with reference to FIGS. 4A and 4B show a state where the restricting portion 32 is located at a standby position (see FIG. 5B) where the diameter of the fitting portion 11a is not restricted. As shown in FIGS. 4A and 4B, the flat plate portion 34 of the main body portion 31 covers the cover portion 11 g of the external conductor shell 11 when the lock member 30 is attached to the plug connector 10. In contact with the cover portion 11g. Moreover, it slides along the rail part 11e in the state which the contact surface 39a contact | abutted to the rail part 11e. Moreover, since the control part 32 is located in a standby position, a pair of extension parts 41 and 42 are arrange | positioned so that the fitting part 11a may be pinched | interposed from the outer side of radial direction.

  As shown in FIGS. 5A and 5B, in the electrical connector 1 in which the restricting portion 32 is in the standby position, the fitting portion 11a is not a pair of arms 37 and 38 but a pair of extensions. Arranged between the portions 41 and 42. In the standby position, the fitting portion 11a can be expanded in diameter. The electrical connector 1 is engaged with the receptacle connector 100 by expanding the fitting part 11a in the state of the standby position (details will be described later). In the standby state, the slide portion 39 slides in contact with the first rail 11h (see FIG. 2A) of the rail portion 11e.

  On the other hand, as shown in FIGS. 6A and 6B, in the electrical connector 1 in which the restricting portion 32 is in the restricting position, the fitting portion 11 a is disposed between the pair of arm portions 37 and 38. Is done. In the restricting position, the fitting portion 11a cannot be expanded in diameter by the pair of arm portions 37 and 38. Since the electrical connector 1 is engaged with the receptacle connector 100 in the above-described standby position state and then in the restricted position state, the outer diameter of the fitting portion 11a is not increased. Is firmly maintained (details will be described later). In the restricted state, the slide portion 39 slides in contact with both the first rail 11h and the second rail 11i (see FIG. 2A) of the rail portion 11e.

  Next, a configuration for causing the operator to detect that the position is the restriction position or the standby position will be described in detail. For example, as shown in FIG. 7A, when the lock member 30 that has been in the restricting position is slid with respect to the plug connector 10 so as to be in the standby position, the first protrusion 39b is moved to the first position at a certain timing. It will not contact | abut on the rail 11h (refer FIG.7 (b) and FIG.7 (c)). Until then, when the first projecting portion 39b was slid in a contact state, when it was in a non-contact state, the sliding resistance between the members changed, and the sensation when sliding was different, It is possible to make the operator sense a change in the slide state.

  As described above, the position of the first protrusion 39b substantially coincides with the position of the rear end in the X direction of the pair of arms 37 and 38, and the front end 11x of the first rail 11h is fitted. The position in the X direction substantially coincides with the tip 11y of the slit formed in the portion 11a. Further, as shown in FIG. 6 (b), the tip end 11y of the slit is from a portion that contacts the pair of arm portions 37 and 38 in the fitting portion 11a (portion that contacts the pair of arm portions 37 and 38 at the restriction position). Is also located on the tip end side in the X direction of the fitting portion 11a. For this reason, the rear ends of the pair of arm portions 37 and 38 are slits at a timing at which the operator senses a change in sensation (a timing at which the first protrusion 39b no longer contacts the first rail 11h). The tip 11y of the fitting portion 11a is reached, and the pair of arm portions 37, 38 are in a state where the diameter of the fitting portion 11a is not restricted. In other words, at the timing when the operator senses a change in feeling when sliding, the worker has already moved from the restricted position to the standby position. As described above, the first protrusion 39b can make the operator sense that it is the standby position.

  For example, as shown in FIG. 8A, when the slide portion 39 of the lock member 30 is slid in the direction of the restricting position with respect to the plug connector 10, it comes into contact with the first wall portion 11k of the first rail 11h. The first protrusion 39b that has been reached reaches the notch 11o between the first wall 11k and the second wall 11m at a certain timing (see FIGS. 8B and 8C). . Until then, the first protrusion 39b and the first wall 11k were slid in contact with each other. When the first protrusion 39b reaches the notch 11o, the first protrusion 39b is cut off. It will be in the state accommodated (dropped) in the notch part 11o. Thereby, a click feeling can be given to the worker, and the worker can sense a change in the slide state.

  As described above, the position of the first projecting portion 39b substantially coincides with the position of the rear end in the X direction of the pair of arm portions 37 and 38, and as shown in FIG. The position of the notch portion 11o in the X direction substantially coincides with the position of the rear end side in the X direction of the fitting portion 11a. For this reason, at the timing at which the worker senses a change in sensation during sliding (timing at which the first protrusion 39b engages with the notch portion 11o), the fitting portion 11a is interposed between the pair of arm portions 37 and 38. Is positioned, and the restricting portion 32 is set as a restricting position. As described above, the first projecting portion 39b can make the operator sense that the position is the restriction position.

  Next, the retaining structure of the electrical connector 1 will be described in detail. The electrical connector 1 is provided with a retaining structure so that the lock member 30 does not fall off from the plug connector 10. As shown in FIG. 9A, in the electrical connector 1 in which the restricting portion 32 is in the standby position, the connecting portion 35 of the lock member 30 is further moved away from the tip of the fitting portion 11a of the plug connector 10. If it does, there exists a possibility that the locking member 30 may drop | omit from the plug connector 10. FIG. In this regard, the electrical connector 1 is provided with a positioning portion 40 and second protrusions 43 and 44 on the lock member 30 as a retaining structure for preventing the lock member 30 from falling off.

  As shown in FIG. 9A and FIG. 9B, the positioning portion 40 contacts the second wall portion 11m of the second rail 11i, and the second wall portion 11m moves beyond the positioning portion 40. Is blocked. As shown in FIG. 3 (d), the pair of positioning portions 40, 40 are arranged such that the Z positions so as to approach each other in the Y direction as they go from the connecting portions arranged at both ends in the Y direction in the flat plate portion 34 toward the lower end 40a. Extending in the direction. That is, the lower end 40a of the positioning part 40 protrudes in a direction in which the lower ends 40a approach each other in the Y direction. The lower end 40a protrudes in a direction in which they approach each other in the Y direction to the extent that they contact the rear end of the second wall portion 11m in the X direction and block the passage of the second wall portion 11m. This prevents the lock member 30 from falling off the plug connector 10.

  As shown in FIGS. 9A and 9C, the second protrusions 43 and 44 are in contact with the fitting portion 11a, and the fitting portion 11a passes between the pair of extension portions 41 and 42. Is blocked. As shown in FIG.3 (c), the 2nd protrusion parts 43 and 44 protrude in the mutual opposing direction (Y direction). And the space | interval of the 2nd projection parts 43 and 44 is smaller than the outer diameter of the fitting part 11a in the state which is not diameter-expanded. Thereby, the fitting part 11a cannot pass between a pair of extension parts 41 and 42, and it is prevented that the locking member 30 falls from the plug connector 10. FIG.

[Fitting and locking of electrical connectors]
Next, with reference to FIG. 1, FIG. 10, and FIG. 11, the fitting between the plug connector 10 and the receptacle connector 100 and the lock after the fitting will be described in detail.

  As shown in FIG. 1, the receptacle connector 100 includes a housing 101, a signal contact member 102, and a ground contact member 103. The receptacle connector 100 is mounted on the printed wiring board 200 by, for example, soldering. Receptacle connector 100 is fitted to plug connector 10 attached to coaxial cable SC. The signal contact member 102 is a signal transmission conductor formed of, for example, a thin metal member. At least a part of the signal contact member 102 protrudes from the opening of the housing in a state of being accommodated in the housing. The signal contact member 102 is electrically connected to the inner conductor SC <b> 1 by contacting the inner conductor contact 13 of the plug connector 10. The ground contact member 103 is a member that is connected to the ground terminal 202 of the printed wiring board 200 formed of, for example, a thin plate-like metal member and constitutes a part of the ground circuit. The ground contact member 103 is arranged so as to surround the signal contact member 102 and the outer side of the housing in an annular shape. On the outer peripheral surface of the ground contact member 103, a recess 103 a (see FIG. 10C) that is recessed radially inward is formed over the entire periphery. The concave portion 103 a is an engagement location with the protruding portion 11 c formed in the fitting portion 11 a of the plug connector 10.

  As shown in FIGS. 10 (a) and 10 (b), when the plug connector 10 and the receptacle connector 100 are fitted, the restricting portion 32 is set to the standby position as shown in FIG. 10 (d). The In this case, the fitting portion 11a is disposed between the pair of extension portions 41 and 42 so that the diameter can be increased. In this state, the plug connector 10 is fitted to the receptacle connector 100 while increasing the diameter of the fitting portion 11a. Specifically, as shown in FIG. 10C, the ground contact member 103 of the receptacle connector 100 is inserted between the expanded fitting portion 11 a and the insulating housing 12.

  In the inserted state, the protrusion 11c of the fitting portion 11a and the recess 103a of the ground contact member 103 are engaged, and the plug connector 10 and the receptacle connector 100 are engaged. In the fitted state, the pair of contact portions 13 b of the plug connector 10 are in contact with the signal contact member 102 of the receptacle connector 100. Note that the fitting portion 11a can be inserted into and removed from the ground contact member 103 only after the diameter is increased, and cannot be inserted into and removed from the ground contact member 103 when the diameter is not increased. ing.

  As shown in FIGS. 11A and 11B, when the fitting state is firmly maintained (locked) after fitting, the slide portion 39 of the lock member 30 is moved along the rail portion 11e. As shown in FIG. 11C, the restricting portion 32 is set to the restricting position. In this case, the fitting portion 11a is disposed between the pair of arm portions 37 and 38 and cannot be expanded in diameter. As described above, the fitting portion 11a cannot be inserted into and removed from the ground contact member 103 in a state where the diameter is not expanded. For this reason, by making the diameter of the fitting portion 11a impossible after fitting, the fitting portion 11a cannot be inserted and removed, and the fitting state between the plug connector 10 and the receptacle connector 100 can be firmly maintained.

[Function and effect]
Next, the effect of the electrical connector 1 described above will be described.

  The electrical connector 1 according to this embodiment includes a plug connector 10 and a lock member 30 attached to the plug connector 10. The plug connector 10 includes a conductive outer conductor shell 11 that is electrically connected to a ground contact member 103 of a receptacle connector 100 that is a mating connector. The outer conductor shell 11 has a cylindrical fitting portion 11 a that is fitted to the ground contact member 103. The outer diameter of the fitting portion 11 a is configured so that the diameter can be increased when the ground contact member 103 is inserted or removed. The lock member 30 includes a restricting portion 32 configured to be able to restrict the diameter of the fitting portion 11a when the fitting portion 11a fitted to the ground contact member 103 (see FIG. 1) of the receptacle connector 100 is removed. And a guide portion 33 that guides the movement of the restricting portion 32 with respect to the fitting portion 11a. The guide part 33 guides the restricting part 32 so that the restricting position for restricting the diameter expansion of the fitting part 11a and the standby position not restricting can be moved.

  In the electrical connector 1, the restricting portion 32 of the lock member 30 is configured to be able to restrict the outer diameter of the fitting portion 11a. Thereby, the diameter of the fitting portion 11a after fitting with the receptacle connector 100 is suppressed, and the fitting state between the plug connector 10 and the receptacle connector 100 can be firmly maintained. In the electrical connector 1, the guide portion 33 of the lock member 30 guides the restriction portion 32 so that it can move between a restriction position where the diameter of the fitting portion 11 a is restricted and a standby position where the fitting portion 11 a is not restricted. To do. Accordingly, for example, when the fitting portion 11a is inserted into and removed from the ground contact member 103, the restriction portion 32 is easily set in the standby position with respect to the plug connector 10, and the insertion and removal are easily performed. When the ground contact member 103 of the receptacle connector 100 is fitted, the fitting state can be strengthened by using the restricting portion 32 as a restricting position with respect to the plug connector 10. That is, the fitting state between the plug connector 10 and the receptacle connector 100 can be firmly maintained while ensuring workability such as insertion / extraction of the plug connector 10.

  The restricting portion 32 has a pair of arm portions 37 and 38 that restrict the diameter of the fitting portion 11a by sandwiching the fitting portion 11a from the outside in the radial direction. By sandwiching the fitting portion 11a from the outside in the radial direction, which is the direction in which the diameter of the fitting portion 11a increases, the diameter of the fitting portion 11a can be effectively restricted. That is, the fitting state between the plug connector 10 and the receptacle connector 100 can be maintained more firmly.

  The distance between the pair of arm portions 37, 38 is narrower than the outer diameter of the fitting portion 11a in the expanded state. Thereby, the diameter expansion of the fitting part 11a can be easily controlled by sandwiching the fitting part 11a between the pair of arm parts 37 and 38. In addition, the diameter of the fitting part 11a can be more reliably regulated by making the rigidity of the pair of arm parts 37 and 38 larger than the force when the fitting part 11a expands the diameter.

  The guide part 33 guides the movement of the restricting part 32 in a direction crossing the fitting direction of the fitting part 11a. By guiding the movement of the restricting portion 32 in a direction different from the fitting direction, the fitting work and the locking work can be clearly distinguished as different works, and workability can be improved.

  The plug connector 10 is a connector attached to one end of the coaxial cable SC, and the guide portion 33 guides the movement of the restricting portion 32 in the axial direction (X direction) of the coaxial cable SC. By guiding the movement of the restriction portion 32 in the axial direction (X direction) of the coaxial cable SC, the movement of the restriction portion 32 is not hindered by the coaxial cable SC or the like, and the restriction portion 32 can be easily moved. And workability can be improved.

  The plug connector 10 includes a lid portion 11b that covers a surface opposite to the surface of the receptacle connector 100 facing the ground contact member 103 in the Z direction of the fitting portion 11a, and a lid portion 11b that extends in the axial direction (X direction). The guide portion 33 extends in the axial direction (X direction) and slides along the rail portion 11e to guide the movement of the restriction portion 32 in the axial direction (X direction). You may have the slide part 39. FIG. When the slide part 39 moves along the rail part 11e of the plug connector 10, the restriction part 32 can be easily moved with respect to the fitting part 11a.

  The slide part 39 has a first protrusion part 39b protruding toward the rail part 11e. The rail part 11e is a first protrusion part 39b after the position of the restriction part 32 reaches the restriction position in the slide of the slide part 39. You may have the notch part 11o engaged with. By engaging the first protrusion 39b with the notch 11o, it is possible to give a click feeling to the worker, and sense that the position of the restricting portion 32 is the restricting position for the worker. Can be made.

  The guide portion 33 has a flat plate portion 34 that is opposed to the pair of arm portions 37 and 38 in the fitting direction, holds the slide portion 39, and covers the lid portion 11b. The opening 34a may be formed. Accordingly, when the slide portion 39 is slid, the positions of the pair of arm portions 37 and 38 with respect to the plug connector 10 can be visually recognized from the opening 34a. Can be detected.

  The guide part 33 has a pair of extension parts 41 and 42 extending continuously from the pair of arm parts 37 and 38 of the restriction part 32, and the pair of extension parts 41 and 42 is arranged in the standby position. In this state, the fitting part 11a is arranged so as to be sandwiched from the outside in the radial direction, and the distance between the pair of extension parts 41 and 42 may be wider than the distance between the pair of arm parts 37 and 38. The extension portions 41 and 42 that extend continuously from the pair of arm portions 37 and 38 and sandwich the fitting portion 11a in a state in which the restricting portion 32 is disposed at the standby position are formed. It is possible to more appropriately guide the movement of the arm portions 37 and 38 (the restriction portion 32). Further, since the interval between the pair of extension portions 41 and 42 is wider than the interval between the pair of arm portions 37 and 38, the restriction portion 32 is disposed at the standby position, that is, the extension portions 41 and 42 are fitted. In the state where the portion 11a is sandwiched, the diameter of the fitting portion 11a can be allowed to increase.

  At least one of the pair of extension parts 41 and 42 has second protrusion parts 43 and 44 protruding toward the other, and the second protrusion parts 43 and 44 are arm parts 37 and 44 in the extension parts 41 and 42, respectively. 38, provided at the end opposite to the portion continuous with 38, and protruding so as to prevent the fitting portion 11a from passing between the pair of extension portions 41 and 42 by contacting the fitting portion 11a. Good. The second protrusions 43 and 44 are provided at the ends of the extension parts 41 and 42, and the second protrusions 43 and 44 protrude so as to prevent the fitting part 11a from passing, whereby the lock member 30 is plug connector. It is possible to prevent separation from 10.

[Modification]
As mentioned above, although embodiment which concerns on this indication was described, you may add various deformation | transformation to said embodiment within the range of the summary of this invention. For example, although it has been described that the distance between the pair of extension parts 41 and 42 is wider than the distance between the pair of arm parts 37 and 38, the diameter of the fitting part 11 a is allowed in the standby position, but the present invention is not limited thereto. Alternatively, the diameter of the fitting portion 11a may be allowed to be increased at the standby position by making the rigidity of the pair of extension portions 41 and 42 lower than the rigidity of the pair of arm portions 37 and 38.

  Moreover, although the slide part 39 was demonstrated as having the 1st projection part 39b and the rail part 11e had the notch part 11o, it is not limited to this, conversely, the rail part 11e is in the mutually opposing direction. The protruding portion may have a protruding portion, and the slide portion 39 may have a notch that engages with the protruding portion of the rail portion 11e after reaching the restriction position.

  Moreover, although it demonstrated that the 2nd projection parts 43 and 44 were provided in each of a pair of extension parts 41 and 42, it is not limited to this, A 2nd projection part is provided in any one of a pair of extension parts 41 and 42. A configuration corresponding to may be provided.

  DESCRIPTION OF SYMBOLS 1 ... Electric connector, 10 ... Plug connector (1st connector), 11 ... External conductor shell (1st contact), 11a ... Fitting part, 11b ... Lid part, 11e ... Rail part, 11o ... Notch part (engagement) Part), 30 ... lock member, 32 ... regulating part, 33 ... guide part, 34 ... flat plate part, 34a ... opening, 37, 38 ... pair of arm parts, 39 ... slide part, 39b ... first projection part, 41, 42: a pair of extensions, 43, 44: second protrusion, 100: receptacle connector (second connector), 103: ground contact member (contact of second connector), SC: coaxial cable (cable).

Claims (12)

A first connector; and a lock member attached to the first connector;
The first connector includes a conductive first contact that is electrically connected to a contact of a second connector that is a mating connector;
The first contact has a cylindrical fitting portion to be fitted to the contact of the second connector,
The outer diameter of the fitting portion is configured such that the diameter can be increased when the second connector is inserted into and removed from the contact.
The lock member includes a restricting portion configured to be able to restrict the diameter of the fitting portion when the fitting portion fitted into the contact of the second connector is removed, and the restricting portion with respect to the fitting portion. A guide portion for guiding the movement of
The restricting portion has a pair of arm portions for restricting the diameter of the fitting portion by sandwiching the fitting portion from outside in the radial direction.
The electrical connector guides the restricting portion so that the restricting position for restricting the diameter expansion of the fitting portion and the standby position for not restricting the guide portion can be moved relative to each other. The interval between the pair of arms is enlarged to narrower than the outer diameter of the fitting portion in a state in which an electrical connector according to claim 1. The electrical connector according to claim 2 , wherein the guide portion guides movement of the restricting portion in a direction intersecting with a fitting direction of the fitting portion. The first connector is a connector attached to one end of a cable;
The electrical connector according to claim 3 , wherein the guide portion guides movement of the restricting portion in an axial direction of the cable. The first connector includes a lid that covers a surface opposite to a side that receives the contact of the second connector in the fitting direction of the fitting portion; a rail portion that is provided on the lid and extends in the axial direction; Have
The electrical connector according to claim 4 , wherein the guide portion includes a slide portion that extends in the axial direction and guides movement of the restricting portion in the axial direction by sliding along the rail portion. Either one of the slide part and the rail part has a first protrusion protruding toward the other, and the other is after the position of the restricting part reaches the restricting position in the slide of the slide part. The electrical connector according to claim 5 , further comprising an engaging portion that engages with the first protrusion. The guide portion includes a flat plate portion that is provided so as to face the pair of arm portions in the fitting direction, hold the slide portion, and cover the lid portion.
The electrical connector according to claim 5 or 6 , wherein an opening is formed in the flat plate portion. The guide portion has a pair of extension portions that extend continuously to the pair of arm portions of the restriction portion,
The pair of extension parts are arranged so as to sandwich the fitting part from the outside in the radial direction in a state where the restriction part is arranged at the standby position,
Spacing of the pair of extension portions, the wider than the spacing between the pair of arm portions, the electrical connector of any of claims 2-7. The guide portion has a pair of extension portions that extend continuously to the pair of arm portions of the restriction portion,
The pair of extension portions are configured to sandwich the fitting portion from the outside in the radial direction in a state where the restriction portion is disposed at the standby position.
The electrical connector according to any one of claims 2 to 8 , wherein rigidity of the pair of extension portions is lower than rigidity of the pair of arm portions. At least one of the pair of extensions has a second protrusion that protrudes toward the other,
The second projecting portion is provided at an end portion of the extension portion opposite to the portion that is continuous with the arm portion, and is brought into contact with the fitting portion so that the fitting portion is provided between the pair of extension portions. There protruding to have an electrical connector according to claim 8 or 9, wherein to prevent from passing through. The first connector is a plug connector attached to one end of a coaxial cable;
The second connector is a receptacle connector that is mounted on a board that is electrically connected to the coaxial cable and is fitted to the plug connector;
The contact of the second connector is a ground contact connected to the ground terminal of the substrate, the electrical connector of any one of claims 1-10. Constructed to be able to regulate the expansion of the diameter of the cylindrical fitting part that can be increased in outer diameter when the electrical connector is inserted into and removed from the connector of the other party that is electrically connected and fitted to the contact of the other party's connector The regulated department,
A guide portion for guiding the movement of the restricting portion relative to the fitting portion,
The restricting portion has a pair of arms for restricting the diameter of the fitting portion by sandwiching the fitting portion from outside in the radial direction, and the fitting is fitted to the contact of the mating connector. It is configured to be able to regulate the diameter expansion of the fitting part when the part is removed,
The guide part is a lock member for an electrical connector that guides the restricting part so that the restricting position for restricting the diameter expansion of the fitting part and the standby position for not restricting the guide part can be moved relative to each other. .

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