JP6658720B2 - Electrical connector and locking member for electrical connector - Google Patents

Description

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

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

JP 2005-183212 A

  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 mating state more firmly, for example, it is conceivable to use an adhesive after the mating. However, when the adhesive is used, it is difficult to remove the mating state from the electric connector. There is a possibility that a series of operations relating to the insertion and removal of and the maintenance of the fitted state become complicated. Accordingly, the present disclosure describes an electrical connector that securely maintains a fitted state while ensuring workability, and a lock member of the electrical connector.

  An electrical connector according to an 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 mating connector. The first contact has a cylindrical fitting portion fitted to the contact of the second connector, and the fitting portion has a fitting direction (hereinafter, referred to as “ (Referred to as “fitting direction”) is formed on the side surface, and when the second connector is inserted into and removed from the contact, the second connector is configured to be able to expand in a radial direction with the slit as a boundary. It has a pair of arms configured to be able to regulate the diameter expansion of the fitting part by sandwiching the fitting part from the outside in the radial direction, and the pair of arms is in a state where the diameter expansion of the fitting part is regulated. Slit along the mating part Towards having protrusions extending.

  In the electrical connector according to the present disclosure, the pair of arm portions of the lock member is configured to be able to restrict the diameter expansion of the fitting portion. Thereby, the diameter of the fitting portion after fitting with the second connector is suppressed, and the fitting state between the first connector and the second connector can be firmly maintained. Here, the fitting portion is configured to be able to expand in diameter by expanding around the slit. For this reason, in order to effectively suppress the diameter expansion, it is preferable to suppress the vicinity of the slit. In this regard, in the electrical connector according to the present disclosure, the pair of arms has a protrusion extending toward the slit along the fitting portion, and the vicinity of the slit is pressed by the protrusion. Thereby, the diameter expansion of the fitting portion is more appropriately suppressed, and the fitting state between the first connector and the second connector can be more firmly maintained. Further, in the electric connector according to the present disclosure, since the configuration in which the diameter of the fitting portion is restricted by the lock member is adopted, even if the removal operation is required after the fitting, the fitting by the lock member is performed. The removal operation can be easily performed by releasing the diameter expansion restriction state of the portion. That is, according to the electrical connector according to the present disclosure, a series of operations relating to insertion / removal and maintenance of the fitted state can be easily performed, unlike a configuration using an adhesive after fitting.

  In the electrical connector described above, the first connector may be a connector attached to one end of the cable, and the lock member may be configured to be movable along an axial direction in which the cable extends. As described above, by realizing the lock by moving the lock member in a direction (axial direction of the cable) different from the mating direction of the electrical connector, the fitting operation and the locking operation can be clearly distinguished from each other. , Workability can be improved.

  In the above-described electric connector, the lock member has the pair of arms sandwiching the fitting portion from the outside in the radial direction from the standby position where the pair of arms are located closer to the base end of the cable than the fitting portion in the axial direction. A guide portion for guiding the movement of the pair of arms to the restriction position may be further provided. Thus, for example, when inserting and removing the fitting portion with respect to the second contact, the pair of arms are set to the standby position to facilitate the insertion and removal, and the fitting portion of the first connector and the contact of the second connector are fitted. When they are engaged, the fitting state can be strengthened by using the pair of arms as the regulating positions. That is, it is possible to firmly maintain the fitting state between the first connector and the second connector while securing workability such as insertion and removal of the first connector. Further, since the standby position is closer to the base end of the cable (rearward) than the fitting portion, the pair of arms are disposed forward of the fitting portion in the locking operation to move from the standby position to the restriction position. Never be. Accordingly, it is possible to suppress the arrangement of the lock member in the area in front of the first connector on the board, to mount another electronic component on the board in the area in front of the lock member, and to improve the mounting efficiency of the board. .

  In the above-described electrical connector, the first contact includes a lid that covers an opening of the fitting portion opposite to the opening that receives the contact of the second connector, a rail that is provided continuously with the lid and extends in the axial direction, The guide portion may further include a slide portion that extends in the axial direction and slides along the rail portion to guide movement of the pair of arm portions in the axial direction. The pair of arms can be easily moved by moving the slide along the rail of the first connector.

  In the electrical connector described above, the slide portion may cover the rail portion from outside and may engage with the rail portion. Since the slide portion is engaged with the rail portion, it is possible to prevent the lock member from separating from the first connector in the fitting direction.

  In the above-described electrical connector, the first contact further has a holding portion provided to hold the cable at a position closer to the base end of the cable than the fitting portion in the axial direction, and the projecting portion includes the fitting portion. May be made to be able to contact the holding portion in a state where the diameter expansion is restricted. As described above, since the protruding portion extending toward the slit along the fitting portion can be brought into contact with the holding portion, the protruding portion is sandwiched between the fitting portion and the holding portion. This makes it easier to fix the position of the protruding portion that restricts the diameter increase near the slit, and can maintain the fitting state between the first connector and the second connector more firmly.

  In the above-described electrical connector, the pair of arms may be configured to be elastically displaceable in a vertical direction, which is a direction in which the arms are fitted. Since the pair of arms can be elastically deformed, even when the protrusion interferes with another configuration (for example, the holding portion) when the pair of arms slide, the projection can get over the other configuration. And the protrusion can be moved. That is, the movement of the pair of arms can be performed more easily.

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

FIG. 1 is a perspective view of an electrical connector according to an embodiment of the present invention. 2A and 2B are diagrams showing a plug connector included in the electrical connector of FIG. 1, wherein FIG. 2A is a perspective view, FIG. 2B is a side view, and FIG. 2C is a line (c)-(c) in FIG. And (d) is a bottom view. 3A and 3B are views showing a lock member included in the electrical connector of FIG. 1, wherein FIG. 3A is a perspective view, FIG. 3B is a plan view, FIG. 3C is a side view, and FIG. 3D is a bottom view. 4A and 4B are diagrams illustrating a process of attaching the lock member to the plug connector, wherein FIG. 4A illustrates a state before the attachment, FIG. 4B illustrates a state where the lock member is located at the standby position, and FIG. It is a figure which shows the state located in a position, respectively. 5A and 5B are diagrams showing a state in which the lock member is located at the standby position, where FIG. 5A is a plan view, FIG. 5B is a side view, and FIG. 5C is a view taken along the line (c)-(c) in FIG. It is sectional drawing along. 6A and 6B are views showing a state in which the lock member is located at the restriction position, where FIG. 6A is a plan view, FIG. 6B is a side view, and FIG. 6C is a view taken along line (c)-(c) of FIG. It is sectional drawing along.

  The embodiments according to the present disclosure described below are examples for describing the present invention, and therefore, the present invention should not be limited to the following contents. In the following description, the same elements or elements having the same functions will be denoted by the same reference symbols, without redundant description.

[Overview of electrical connectors]
The outline of the electrical connector will be described with reference to FIG. As shown in FIG. 1, the electric connector 1 includes a plug connector 10 (first connector) and a lock member 30. The electric connector 1 is a connector for electrically connecting a cable-like signal transmission medium to an electric circuit on a board, 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 a mobile phone, and is, for example, a coaxial cable SC. The substrate is, for example, the printed wiring board 200. That is, the electric connector 1 of the present embodiment is a coaxial electric connector that electrically connects the coaxial cable SC to the electric 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 fitted to the receptacle connector 100 mounted on the printed wiring board 200 by soldering or the like, so that the coaxial cable SC and the printed wiring board 200 are connected. Is electrically connected to the electric circuit.

  In the following description, the axial direction in which the coaxial cable SC extends will be referred to as the “X direction”, and when the plug connector 10 and the receptacle connector 100 are fitted, the fitting of the plug connector 10 and the receptacle connector 100 will be described. The direction may be described as a “Z direction”, and a direction orthogonal to the X and Z directions may be described as a “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 referred to as a “front end (front end)”, and the opposite end may be referred to as a “base end (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. The plug connector 10 is a connector attached to a distal end portion (one end) of the coaxial cable SC. As shown in FIGS. 2A to 2D, the plug connector 10 includes a conductive outer conductor shell 11 (first contact), an insulating housing 12, and an inner conductor contact 13. . Hereinafter, the coaxial cable SC to which the plug connector 10 is attached, and the outer conductor shell 11, the housing 12, and the inner conductor contact 13 constituting the plug connector 10 will be described in detail.

(coaxial cable)
The coaxial cable SC transmits a high-frequency signal between various signal processing elements (for example, an antenna, a control chip for controlling the antenna, a board, and the like) built in a small terminal such as a mobile phone. Wiring used. The coaxial cable SC includes an inner conductor, an insulator provided around the inner conductor, an outer conductor provided around the insulator, and a protective coating provided around the outer conductor. In the coaxial cable SC, the outer conductor, the insulator, and the inner conductor are exposed in a stepped manner in this order toward the tip where the plug connector 10 is attached.

  In the present embodiment, the internal conductor is electrically connected to the signal contact member 102 (see FIG. 1) of the receptacle connector 100 connected to the signal terminal 201 of the printed wiring board 200 via the internal conductor contact 13. Form a signal transmission circuit. Further, the outer conductor of the coaxial cable SC is electrically connected to the ground contact member 103 (see FIG. 1) of the receptacle connector 100 connected to the ground terminal 202 of the printed wiring board 200 via the outer conductor shell 11. Form a ground circuit.

(Outer 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 housing 12 as shown in FIG. The outer conductor shell 11 is electrically connected to a ground contact member 103 (contact, see FIG. 1) of a receptacle connector 100 (second connector), which is a mating connector, to form a ground circuit. The outer conductor shell 11 is formed from, for example, a thin metal member. The outer conductor shell 11 has a fitting part 11a, a lid part 11b, a pair of rail parts 11c, 11c, a pair of holding parts 11d, 11d, and a fixing part 11e.

  The fitting portion 11a is formed in a cylindrical shape (cylindrical shape) whose central axis is the Z direction, and accommodates the housing 12 coaxially in the cylindrical hole. The inner peripheral surface of the fitting portion 11a is in contact with the outer peripheral surface of the housing 12. Near the lower end of the fitting portion 11a, there is a protruding portion 11f protruding radially inward (the center axis of the fitting portion 11a) over the entire circumference (see FIG. 2 (c)). The fitting portion 11a is fitted to the ground contact member 103 of the receptacle connector 100 by engaging the protrusion 11f with a concave portion 103a (see FIG. 1) formed on the outer periphery of the ground contact member 103 of the receptacle connector 100. You.

  The fitting portion 11a has a slit 11g (see FIG. 2D) extending in the Z direction (fitting direction) at a rear end portion on a side surface, and is inserted into and removed from the ground contact member 103 of the receptacle connector 100. In some cases, the outer diameter expands in the radial direction from the slit 11g as a boundary. The slit 11g is formed over the entire area in the Z direction at the rear end of the side surface of the fitting portion 11a. Thereby, the rear end portion of the fitting portion 11a is separated so as to sandwich the slit 11g. As described above, the slit 11g is a gap formed between the separated portions at the rear end of the fitting portion 11a. Note that the slit 11g does not necessarily need to be formed in the entire area in the Z direction, and may be formed along the Z direction to such an extent that the fitting portion 11a can be expanded with respect to the slit 11g. . The outer diameter of the fitting portion 11a in a state where the diameter is not expanded is, for example, about 2.5 mm, and the outer diameter in a state where 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 when the diameter is expanded, and cannot be inserted into and removed from the ground contact member 103 when the diameter is not expanded. .

  The lid 11b is a part that covers the opening of the upper surface of the fitting part 11a so as to close it. That is, the lid portion 11b covers the opening of the fitting portion 11a opposite to the opening for receiving the receptacle connector 100. The lid part 11b is provided integrally with the fitting part 11a. The lid portion 11b covers the opening of the fitting portion 11a and extends rearward in the X direction to a region where a pair of holding portions 11d, 11d described later is provided.

  As shown in FIG. 2A, the pair of rails 11c is provided continuously with the lid 11b and extends in the X direction. The pair of rail portions 11c, 11c are provided continuously at both ends in the Y direction of a region of the lid portion 11b that covers the opening of the fitting portion 11a. The pair of rails 11c, 11c are provided in front of the side walls 11n of the pair of holding parts 11d, 11d in the X direction. The length of the pair of rails 11c, 11c in the Z direction (the length extending downward from the lid 11b) is shorter than the pair of holding parts 11d, 11d. Further, as shown in FIG. 2D, the pair of rail portions 11c, 11c extend in the X direction at positions protruding outward from the pair of holding portions 11d, 11d in the Y direction.

  The pair of holding portions 11d, 11d are portions provided so as to hold the coaxial cable SC at a position closer to the base end of the coaxial cable SC than the fitting portion 11a in the X direction (that is, behind the fitting portion 11a). is there. The pair of holding portions 11d, 11d are provided continuously to the lid portion 11b. More specifically, the pair of holding portions 11d, 11d are located in a region behind the opening of the fitting portion 11a in the lid portion 11b in the X direction. It is provided continuously at both ends in the direction. The holding portion 11d includes a side wall portion 11n that is continuous with the lid portion 11b and extends downward, and a folded portion 11o that is continuous with the lower end of the side wall portion 11n and extends in the Y direction (specifically, the direction toward the other holding portion 11d that faces the opposite side). have. Each of the folded portions 11o, 11o of the pair of holding portions 11d, 11d extends to the center of the plug connector 10 in the Y direction (see FIG. 2D).

  The fixing portion 11e is a portion for attaching the plug connector 10 to the coaxial cable SC. The fixing portion 11e is provided along the coaxial cable SC at a position closer to the base end of the coaxial cable SC than the pair of holding portions 11d, 11d in the X direction (that is, behind the pair of holding portions 11d, 11d). The fixing portion 11e is a plate-shaped member that is configured to be bendable and that is formed in a U-shape before being bent. The fixing portion 11e 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 crimped at the tip, and attaches the plug connector 10 to the coaxial cable SC.

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

(Internal conductor contact)
The internal conductor contact 13 is attached to the inside of the housing 12 by press fitting or the like. The inner conductor contact 13 includes a connecting portion 13a for connecting the inner conductor of the coaxial cable SC and a pair of contact portions 13b extending from the connecting portion 13a in the Z direction (fitting direction) and electrically connected to the inner conductor. (See FIG. 2C). The pair of contact portions 13b are configured to be elastically displaceable in the Z direction, and come into contact with the signal contact member 102 (see FIG. 1) of the receptacle connector 100.

[Locking member]
Next, the details of the lock member 30 will be described with reference to FIGS. The lock member 30 is mounted on the plug connector 10. The lock member 30 fits the plug connector 10 and the receptacle connector 100 by restricting the outside diameter of the fitting portion 11a of the plug connector 10 after the plug connector 10 and the receptacle connector 100 are fitted. It is to maintain the state firmly. The lock member 30 is configured to be movable along the X direction when mounted on the plug connector 10. The lock member 30 is formed of, for example, a thin metal member. The lock member 30 has a pair of arm portions 31, 31, a guide portion 32, and a connecting portion 33.

  The pair of arms 31, 31 is configured so that the fitting portion 11a is sandwiched from outside in the radial direction (Y direction) so that the diameter of the fitting portion 11a can be restricted. The pair of arms 31, 31 extend in the X direction while facing each other in the Y direction. In the pair of arms 31, 31, the shape of the portion that sandwiches the fitting portion 11a (the portion facing the fitting portion 11a) is shaped according to the outer shape (that is, circular) of the fitting portion 11a (FIG. 3 (d) and FIG. 6 (c)), the fitting portion 11a can be sandwiched in close contact with the outer edge of the fitting portion 11a. That is, as shown in FIG. 3D, the portion of the pair of arms 31, 31 that sandwiches the fitting portion 11a is partially circular when viewed from the bottom. The pair of arms 31, 31 is configured to be elastically deformable in a vertical direction, which is a fitting direction of the fitting portion 11a, with a portion near a connecting portion 39 described later as a fulcrum.

  The pair of arms 31, 31 extend toward the slit 11g along the outer edge of the fitting part 11a in a state where the diameter of the fitting part 11a is restricted (that is, in a state where the fitting part 11a is sandwiched). It has protrusions 34, 34 (see FIGS. 3D and 6C). As described above, the pair of arms 31, 31 is in contact with the outer edge of the fitting portion 11 a while sandwiching the fitting portion 11 a, and the protrusions 34, 34 are also in contact with the outer edge of the fitting portion 11 a. (See FIG. 6C). In addition, as shown in FIG. 6C, when the fitting portion 11a is sandwiched, the protruding portion 34 can contact not only the fitting portion 11a but also the holding portion 11d. That is, the protruding portion 34 is disposed so as to be sandwiched between the fitting portion 11a and the holding portion 11d in a state where the fitting portion 11a is sandwiched. Note that the protrusion 34 does not always need to be in contact with both the fitting portion 11a and the holding portion 11d in a state where the fitting portion 11a is sandwiched, and it is sufficient that the projecting portion 34 be in a contactable state.

  The guide portion 32 is fitted with the pair of arms 31, 31 from a standby position where the pair of arms 31, 31 is located closer to the base end of the coaxial cable SC (that is, rearward) than the fitting portion 11a in the X direction. It is a portion that guides the movement of the pair of arm portions 31, 31 to a regulation position where the portion 11a is sandwiched from the outside in the radial direction. To guide the movement means not only to guide the movement from one area to another area without the lock member 30 coming off the plug connector 10, but also to, for example, restrict the lock member 30 from the state where the lock member 30 comes off the plug connector 10. It also includes the guidance of travel up to. The restriction position and the standby position are the relative positions of the pair of arms 31, 31 with respect to the fitting portion 11a.

  The guide part 32 has a base part 35 and a pair of slide parts 36, 36. The base 35 is a substantially rectangular flat plate provided flush with a base 38 of the connecting portion 33 described later, and covers the upper surface of the lid 11b. The pair of slide portions 36, 36 extend in the X direction, and guide the movement of the pair of arm portions 31, 31 in the X direction by sliding along the pair of rail portions 11c, 11c. The pair of slide portions 36, 36 are provided continuously at both ends in the Y direction of the base portion 35. The pair of slide portions 36, 36 has a pair of protrusion portions 37, 37 extending at the lower ends in the direction of the other slide portion 36 facing (inward) (see FIG. 3A). The upper surfaces of the pair of protrusions 37 contact the lower ends of the pair of rails 11c when the pair of arms 31 are guided by the guide 32 (see FIG. 4C). The pair of slide portions 36, 36 cover the pair of rail portions 11c, 11c from outside, and the pair of protrusions 37, 37 provided at the lower ends thereof engage with the lower ends of the pair of rail portions 11c, 11c. (See FIG. 4C). Accordingly, it is possible to prevent the lock member 30 from being separated from the plug connector 10 in the fitting direction.

  The connecting part 33 is a part that connects the pair of arms 31, 31 and the guide part 32. The connecting part 33 has a base part 38 and a pair of connecting parts 39, 39. The base 38 is a substantially rectangular flat plate provided flush with the base 35 of the guide 32, is continuous with the rear end of the base 35, and covers the upper surface of the lid 11b. The pair of connecting portions 39, 39 are continuous with both ends of the rear end of the base 38 in the Y direction and extend downward, and are connected to the rear ends of the pair of arms 31, 31 at the lower ends.

[Lock member mounting and lock processing]
Next, the mounting of the lock member 30 to the plug connector 10 and the locking process will be described in detail with reference to FIGS. 4 to 6, the illustration of the receptacle connector 100 (see FIG. 1) fitted with the plug connector 10 is omitted.

  As shown in FIG. 4A, first, the lock member 30 is attached to the plug connector 10. Specifically, by gradually moving the lock member 30 set above the plug connector 10 downward, the lock member 30 is mounted on the lid 11b.

  As shown in FIGS. 4 (b) and 5 (a) to 5 (c), when the plug connector 10 and the receptacle connector 100 are fitted together, the pair of arm portions 31, 31 of the lock member 30 are provided. Is the standby position. In the standby position, since the pair of arms 31 and 31 are located behind the fitting portion 11a, the force (pinching force) from the pair of arms 31 and 31 is applied to the fitting portion 11a. Absent. In this state, the diameter of the fitting portion 11a can be expanded. In this state, the plug connector 10 is fitted to the receptacle connector 100 while expanding the diameter of the fitting portion 11a. Specifically, the ground contact member 103 of the receptacle connector 100 is inserted between the enlarged fitting portion 11a and the housing 12 (see FIG. 5C). The lock member 30 may be mounted on the lid 11b after the plug connector 10 and the receptacle connector 100 have been fitted.

  In the inserted state, the protruding portion 11f of the fitting portion 11a (see FIG. 2C) and the concave portion 103a of the ground contact member 103 (see FIG. 1) are engaged, and the plug connector 10 and the receptacle connector 100 are engaged. Are fitted. The fitting portion 11a can be inserted into and removed from the ground contact member 103 only after the diameter is expanded, and cannot be inserted into and removed from the ground contact member 103 when the diameter is not expanded. ing.

  As shown in FIGS. 4C and 6A to 6C, when the fitting state is firmly maintained (locked) after the fitting, a pair of sliding portions of the lock member 30 is used. 36, 36 are slid forward along the rail portion 11c, and the pair of arm portions 31, 31 is set to the regulation position. At the regulation position, as shown in FIG. 6C, the pair of arms 31, 31 sandwich the fitting portion 11a from the outside in the radial direction. The pair of arms 31, 31 extend toward the slit 11g with the protrusions 34, 34 along the fitting 11a when the fitting 11a is sandwiched therebetween. Thereby, in the regulation position, the diameter of the fitting portion 11a cannot be increased, or the diameter thereof is suppressed. As described above, the fitting portion 11a cannot be inserted into or removed from the ground contact member 103 when the diameter is not expanded. For this reason, the diameter of the fitting portion 11a cannot be increased after fitting, or the diameter of the fitting portion 11a is suppressed, so that the fitting portion 11a cannot be inserted or pulled out or is difficult to be pulled out, so that the plug connector 10 and the receptacle connector 100 are fitted together. The state can be maintained firmly.

[Effects]
Next, the operation and effect of the above-described electric connector 1 will be described.

  The electrical connector 1 according to the present embodiment includes a plug connector 10 and a lock member 30 mounted on the plug connector 10. The plug connector 10 electrically connects a ground contact member 103 of a receptacle connector 100 as a mating connector. The outer conductor shell 11 has a cylindrical fitting portion 11a fitted to the ground contact member 103, and the fitting portion 11a is fitted. A slit 11g is formed on the side surface along the direction in which the slit 11g extends in the radial direction at the time of insertion / removal with respect to the ground contact member 103, so that the diameter can be increased. A pair of arm portions 31 configured to be able to regulate the diameter expansion of the fitting portion 11a by sandwiching the Having 1, a pair of arm portions 31 and 31 has a protrusion 34 extending toward the slit 11g in the along the fitting portion 11a in a state where the regulating diameter of the fitting portion 11a.

  In the electrical connector 1, the pair of arms 31, 31 of the lock member 30 are configured to be able to regulate the 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. Here, the fitting portion 11a is configured to be able to expand in diameter by expanding around the slit 11g. For this reason, it is preferable to suppress the vicinity of the slit 11g in order to effectively suppress the diameter expansion. In this regard, in the electrical connector 1, the pair of arms 31, 31 have the protrusions 34, 34 extending toward the slit 11g along the fitting portion 11a, and the protrusions 34, 34 cause the slit 11g. The vicinity is pressed. Thereby, the diameter expansion of the fitting portion 11a is more appropriately suppressed, and the fitting state between the plug connector 10 and the receptacle connector 100 can be more firmly maintained. Further, in the electrical connector 1, since a configuration is adopted in which the diameter of the fitting portion 11a is restricted by the lock member 30, even if a removal operation is required after the fitting, the fitting by the lock member 30 can be performed. The removal operation can be easily performed by releasing the diameter expansion restriction state of the portion 11a. That is, according to the electrical connector 1, a series of operations related to insertion and removal and maintenance of the fitted state can be easily performed, unlike a configuration using an adhesive after fitting.

  The plug connector 10 is attached to one end of the coaxial cable SC, and the lock member 30 is configured to be movable in an axial direction (X direction) in which the coaxial cable SC extends. As described above, the locking operation is performed by moving the lock member 30 in a direction different from the fitting direction (Z direction) of the plug connector 10, so that the fitting operation and the locking operation can be clearly distinguished from each other. , Workability can be improved.

  The lock member 30 has a pair of arms 31, 31 extending from the standby position where the pair of arms 31, 31 is closer to the base end of the coaxial cable SC than the fitting portion 11 a in the X direction. It further has a guide portion 32 that guides the movement of the pair of arm portions 31 to the restricted position where the arm portion 31 is sandwiched from the outside in the direction. Thus, for example, when inserting and removing the fitting portion 11a with respect to the ground contact member 103, the pair of arms 31 and 31 can be easily inserted and removed with the standby position, and the fitting portion 11a of the plug connector 10 and the receptacle connector can be connected. When the 100 ground contact members 103 are fitted, it becomes possible to strengthen the fitted state by using the pair of arms 31, 31 as the regulating positions. That is, it is possible to firmly maintain the fitting state between the plug connector 10 and the receptacle connector 100 while securing the workability such as insertion and removal of the plug connector 10. Further, since the standby position is closer to the base end (rearward) of the coaxial cable SC than the fitting portion 11a, the pair of arms 31 and 31 are fitted in the lock operation to move from the standby position to the restriction position. It is not disposed forward of the part 11a. Thereby, the lock member 30 can be suppressed from being arranged in the area in front of the plug connector 10 in the printed wiring board 200, and other electronic components can be mounted on the printed wiring board 200 in the area in front of the plug connector 10. 200 can be improved.

  The outer conductor shell 11 further includes a lid portion 11b that covers an opening of the fitting portion 11a opposite to the opening that receives the ground contact member 103, and a rail portion 11c that is provided continuously to the lid portion 11b and extends in the X direction. The guide portion 32 has a slide portion 36 that extends in the X direction and slides along the rail portion 11c to guide the movement of the pair of arms 31 in the X direction. By moving the slide portion 36 along the rail portion 11c of the plug connector 10, the pair of arm portions 31, 31 can be easily moved.

  The slide portion 36 covers the rail portion 11c from the outside and engages with the rail portion 11c. The engagement of the slide portion 36 with the rail portion 11c can prevent the lock member 30 from being separated from the plug connector 10 in the fitting direction.

  The outer conductor shell 11 further includes a pair of holding portions 11d, 11d provided so as to hold the coaxial cable SC at a position closer to the base end of the coaxial cable SC than the fitting portion 11a in the X direction. 34, 34 can contact the pair of holding portions 11d, 11d in a state where the diameter expansion of the fitting portion 11a is regulated. As described above, since the protrusion 34 extending toward the slit 11g along the fitting portion 11a can be brought into contact with the holding portion 11d, the protrusion 34 is held between the fitting portion 11a and the holding portion 11d. It will be. This makes it easier to fix the position of the protruding portion 34 that restricts the diameter increase near the slit 11g, and it is possible to maintain the fitting state between the plug connector 10 and the receptacle connector 100 more firmly.

  The pair of arms 31, 31 is configured to be elastically displaceable in a vertical direction, which is a fitting direction. Since the pair of arms 31 is elastically deformable, even when the projecting portion 34 interferes with another configuration (for example, the holding portion 11d) when sliding the pair of arms 31, 31, The protrusion 34 can be moved so that the protrusion 34 gets over another configuration. That is, the movement of the pair of arms 31 can be more easily performed. Further, since the projecting portion 34 extends toward the slit 11g at a position over the holding portion 11d or the like, the position of the projecting portion 34 can be more easily fixed, and the fitting state between the plug connector 10 and the receptacle connector 100 can be improved. Can be maintained firmly.

  DESCRIPTION OF SYMBOLS 1 ... Electric connector, 10 ... Plug connector (1st connector), 11 ... Outer conductor shell (1st contact), 11a ... Mating part, 11b ... Lid part, 11c ... Rail part, 11d ... Holding part, 11g ... Slit , 30: Locking member, 31: Arm, 32: Guide, 34: Projection, 36: Slide, 100: Receptacle connector (second connector), 103: Ground contact member (contact of second connector), 200 ... printed wiring board (board), SC ... coaxial cable (cable).

Claims (5)

A first connector attached to one end of the cable, 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 fitted to the contact of the second connector,
The fitting portion is configured such that a slit along the direction in which the fitting is performed is formed on a side surface, and that the diameter can be increased by expanding in a radial direction with the slit as a boundary when the second connector is inserted into or removed from a contact. Yes,
The lock member,
It is configured to be movable along an axial direction that is the direction in which the cable extends,
A pair of arms configured to be able to regulate the diameter expansion of the fitting part by sandwiching the fitting part from the outside in the radial direction, and the pair of arms in the axial direction is more than the fitting part. A guide portion that guides the movement of the pair of arms from a standby position located near the base end of the cable to a regulation position where the pair of arms sandwiches the fitting portion from the outside in the radial direction. Have
The electric connector, wherein the pair of arms has a protruding portion extending toward the slit along the fitting portion in a state where the diameter expansion of the fitting portion is restricted. The first contact includes: a lid portion covering the opening opposite to the opening for receiving the contact of the second connector in the fitting portion; and a rail portion provided continuously to the lid portion and extending in the axial direction. Have more,
The guide portion extends in the axial direction, by sliding along the rail portion includes a slide portion for guiding the movement of said pair of arms to the axial direction, the electrical connector according to claim 1. The electrical connector according to claim 2 , wherein the slide portion covers the rail portion from outside and engages with the rail portion. The first contact further includes a holding portion provided to hold the cable at a position closer to a base end of the cable than the fitting portion in the axial direction,
The protrusion, in a state where the regulating diameter of the fitting portion and is capable of contact with the clamping portion, the electrical connector of any one of claims 1-3. The electrical connector according to any one of claims 1 to 4 , wherein the pair of arms are configured to be elastically displaceable in a vertical direction, which is the fitting direction.

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