JPH0350626Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Purpose of the invention (industrial application field) This invention is used in the technical field of coaxial connectors, and in particular relates to the improvement of the female contact of the outer conductor shell of a female coaxial connector. It is.

(Prior Art) As this type of female coaxial connector, the one disclosed in Japanese Utility Model Application No. 59-138184 is known. However, conventional female coaxial connectors have the following problems.

As shown in the accompanying drawing of the same publication, the slits 15, 16, 17, 18 of the outer conductor shell 9
Since the is provided in the axial direction, it is necessary to insert and remove the mating male connector within the outer conductor shell while prying it in the radial direction, and in this case, the shell is greatly deformed and the contact becomes unstable. Furthermore, if the shell is strained excessively, the shell may exceed a certain allowable stress of the material, resulting in plastic deformation or even destruction.

The outer conductor shell uses a slit to converge upward and is in elastic contact with the male connector, but the contact is only a line contact around the upper end and is extremely contactless. It is stable.

The connecting portion of the outer conductor shell must be slit so as to have spring properties around the entire periphery, and high precision is required. This requires complicated machining and is very expensive.

After cutting, the tip of the joint must be manually drawn into a tapered shape using a drawing tool in order to impart spring properties to the joint, which is not suitable for mass production. This increases costs. Furthermore, since the drawing process was done manually, there were large variations in the connector insertion/removal force and contact force, resulting in unstable quality.

Since there is no means of locking the external conductor to the mating connector, there is a risk that the cable will become uncoupled if tensile force is applied to the cable or vibration or shock is applied while the cable is connected to the mating connector. , and therefore lacks reliability.

(Problems to be solved by the invention) This invention is an attempt to solve the above-mentioned conventional problems.By giving elasticity in the circumferential direction to the outer conductor shell of the female coaxial connector, it is easy to manufacture. No unstable contact due to connector insertion/removal,
Moreover, the present invention provides an outer conductor shell of a female coaxial connector with a large contact area.

(2) Structure of the invention (Means and effects for solving problems) The outer conductor shell of the female coaxial connector of the invention is designed to accept the coupling part of a cylindrical male coaxial connector whose outer periphery is the contact surface. , has a cylindrical outer conductor shell with an opening at one end.

The cylindrical outer conductor shell of the present invention has an open part communicating with the opening in a part of its circumference, and a female contact is formed on at least one circumferential side of the open part. has been done. The female contact has a finger shape extending circumferentially toward the opening, and when the coupling portion of the male coaxial connector is inserted into the outer conductor shell, the female contact surrounds the coupling portion and contacts the coupling portion. It has elasticity in the circumferential direction so as to contact the joint portion.

Further, at least one of the female contacts is provided with a locking protrusion on the inner surface of its tip portion, which engages with a locking groove provided around the coupling portion of the male coaxial connector.

When the coupling part of the male coaxial connector is inserted into the outer conductor shell of such a female coaxial connector, the female contacts of the outer conductor shell are elastically displaced in the direction of enlarging the opening in the circumferential direction, resulting in an opening. The portion is widened, and the connecting portion comes into resilient fitting contact with the female contact. In this contact state, the female contact uniformly contacts the coupling portion over the entire width in the axial direction.

At this time, the lock protrusion of the outer conductor shell of the present invention engages with the lock groove of the male coaxial connector, so that they are locked together and cannot be easily removed.

Further, if the female contacts are formed as a pair extending oppositely from each other from both sides of the open portion, they can be easily elastically deformed, and therefore the mating connector can be easily inserted. If the logarithm is increased, the holding force will be improved, and since each pair will be elastically deformed independently, the permissible range of machining accuracy in the axial direction will be expanded.

By arranging the pair of female contacts so that one is offset from the other in the axial direction and has an overlapping portion in the circumferential direction, the shape can be simplified and production during press molding can be facilitated. becomes.

(Example) An example of the present invention will be described below based on FIGS. 1 and 2.

In the figure, 100 is a board-mounted female coaxial connector according to an embodiment of the present invention, and 200 is an L-shaped male coaxial connector to which the female coaxial connector is coupled.

The female coaxial connector 100 includes an outer conductor shell 110 having a substantially cylindrical shape and press-molded from a sheet of a suitable metal material, and a first dielectric body 120 and a second dielectric body existing inside the outer conductor shell 110. A female terminal 14 formed of an elastic metal is located at the center of the first and second dielectric bodies.
0 is set.

The outer conductor shell 110 has an opening 111 at the upper end for receiving the coupling portion 210 of the mating male coaxial connector 200, and a portion near the opening 111 on the circumference that communicates with the opening 111. An opening 112' is provided to open the opening 11.
Two pairs of female contacts 112 are formed on both sides of 2'. The pair of female contacts 112 are finger-shaped and extend circumferentially opposite to each other, and are elastic in the circumferential direction. A locking protrusion 113 is formed at the tip of the upper pair of the contacts for fitting and locking into an annular locking groove 211 provided at the mating portion of the mating connector. The outer conductor shell 110 extends below the opening 112';
It has a cylindrical part 114 for holding a dielectric body including first and second dielectric bodies 120 and 130 to which a female terminal 140 is fixed, and a connection hole of the printed circuit board 300 is provided at the bottom of the cylindrical part 114. A pair of board connection terminals 117 are formed to be inserted into and connected to 301.

A plurality of protrusions 115 are provided on the top of the cylindrical portion 114 to prevent the first dielectric 120 from protruding in the axial direction. Furthermore, a stop protrusion 116 is formed at the bottom of the cylindrical portion 114 to prevent the second dielectric 130 from falling.

The board connection terminal 117 has a board 3 in its middle part.
A protrusion 118 is provided for temporary fixing when inserted into the connection hole 301 of 00.

The female terminal 140 is the male terminal 2 of the mating connector 200
12 and has a springy connection part 141 on the top that can be electrically connected.

As shown in FIG. 2, the female coaxial connector of the present invention constructed as described above first inserts the board connection terminals 117 and female terminals 14 of the female coaxial connector 100 into the connection holes 301 of the printed circuit board 300.
0 is inserted, soldered on the back side of the printed circuit board, and electrically connected to the electric circuit 302 disposed on the back side of the printed circuit board. The female coaxial connector 100 is connected to the board 300.
It is firmly fixed.

Next, the male coaxial connector 2 disclosed in the same figure
00 is inserted into the opening 111 of the outer conductor shell 110 of the female coaxial connector 100 and fitted. Then, the male terminal 212 to which the coaxial cable is connected is connected to the female terminal 140, and the coupling part 210 is located inside the opening 111, and the locking protrusion of the female contact 112 is inserted into the locking groove 112 provided around the opening 111. The portion 113 is fitted into the female coaxial connector 100 and locked.

FIG. 3 shows a cross section of the connected state when the connection is locked. As is clear from this sectional view, the outer conductor shell 110 of the female coaxial connector is substantially connected (contacted) over a fairly wide range in the circumferential direction of the coupling portion 210 of the male coaxial connector. Moreover, the contact in this range is made over the entire width (in the axial direction) of the female contactor 112, so that the connection of the external conductor between the connectors can be made completely and stably.

FIG. 4 shows a second embodiment of the invention. In the embodiment described above, the lock protrusion 113 was formed only on the upper pair of female contacts 112, but in the present embodiment shown in FIG.
12 is also provided with a lock protrusion 113A at its tip. And this lock protrusion 1
Corresponding to 13A, a locking groove is also provided in the coupling portion of the mating female coaxial connector, resulting in a total of two locking grooves, which improves the reliability of the locking.

FIG. 5 shows a third embodiment of the present invention. The pair of female contacts 112A and 112B are axially shifted by their widths, and have an overlapping portion in the circumferential direction. That is, the upper female contact 112A is made longer than in the first embodiment, and a lock protrusion 113 is provided at the tip thereof, as in the case of the first embodiment. The lower female contact 112B is formed at a different level at a position opposite to the upper female contact 112A, and is provided with a lock protrusion 113 at its tip like the female contact 112A.

A female contact with such a structure has a simpler structure than the female contact of the first embodiment or the second embodiment, so the mold for press molding is cheaper, and the length of the female contact is simpler. Since the length is longer, when mating with a mating male coaxial connector, the elastic force becomes softer, allowing smooth insertion and removal of the connectors, and the surface of the coupling portion of the male coaxial connector is not damaged.

Although the above embodiment has been described using a female coaxial connector for mounting on a board, the present invention is not limited to this female coaxial connector for mounting on a board. For example, it can be widely applied to female coaxial connectors for panel mounting, relay adapters, etc.

(3) Effects of the invention According to the invention as described above, the following effects can be obtained.

Since the outer conductor shell is formed with an arm-shaped female contact extending in the circumferential direction, the outer conductor shell remains plastic even if a mating male connector is inserted into and coupled with the outer conductor shell and the mating male connector is inserted and removed by prying. It does not deform and does not cause problems such as contact anxiety.

The outer conductor shell can be molded from a sheet of metal material, and does not require high processing accuracy, so costs can be reduced.

Since the female contacts are formed in the circumferential direction, the female coaxial connector can be designed to have low dimensions in the height direction, so it can be made smaller than conventional female coaxial connectors.

By providing a lock protrusion at the tip of the female contact, it is possible to ensure that the female contact does not come off when connected to a mating connector.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 shows the outer conductor shell of the first embodiment, A is a plan view, B is a half-sectioned front view, C is a bottom view, and FIG. 2 is an external view of the first embodiment. FIG. 3 is a perspective view showing a conductor shell and a male coaxial connector coupled thereto, FIG. 3 is a cross-sectional view showing the connection state of the outer conductor shell and male coaxial connector in FIG. FIG. 5 is a half-sectional front view of the outer conductor shell of the second embodiment, and FIG. 5 is a front view of a part of the outer conductor shell of the third embodiment. 100...Female coaxial connector, 110...Outer conductor shell, 111...Opening, 112...Female contact, 112'...Opening, 113, 113A...
...Lock protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A female coaxial connector having a substantially cylindrical outer conductor shell that receives a cylindrical coupling portion of a male coaxial connector through an opening at one end, The conductor shell has an opening in a part of its circumference that communicates with the opening, and on at least one side of the opening there is at least one finger-shaped female extending in the circumferential direction and having elasticity in the same direction. Contacts are formed, and at least one of the female contacts is provided with a locking protrusion on the inner surface of its distal end portion to engage with a locking groove provided around the coupling portion of the male coaxial connector. The outer conductor shell of the female coaxial connector is characterized by: (2) The female coaxial according to claim (1) of the claims for registration of a utility model, characterized in that the female contacts form a pair extending oppositely from each other from both sides of the open part, and at least one pair or more is provided. Outer conductor shell of the connector. (3) The utility model registration claim is characterized in that the pair of female contacts is arranged so that one is offset from the other in the axial direction and has an overlapping portion in the circumferential direction. The outer conductor shell of the female coaxial connector described in (2).