JP4943485B2 - Coaxial connector - Google Patents

Description

  The present invention relates to a coaxial connector, and more particularly to a coaxial connector provided with a floating mechanism.

  This type of coaxial connector is disclosed in Patent Document 1. The coaxial connector includes a fixed assembly and a movable assembly that is movable in the axial direction and in a radial direction perpendicular to the axial direction. The fixed assembly includes a fixed inner conductor, a floating member that holds the movable assembly movably, a fixed insulating member that insulates the fixed inner conductor from the floating member, and a movable assembly held by the floating member. It has a biasing member that biases toward the mating connector. The movable assembly includes a movable inner conductor, a movable outer conductor, and a movable insulating member that insulates the movable inner conductor from the movable outer conductor. The movable inner conductor includes a first relay terminal, a second relay terminal that is electrically connected to the first relay terminal, includes a contact portion that is accommodated in the accommodating portion of the first relay terminal and contacts the fixed inner conductor, A biasing member that biases the two relay terminals toward the fixed-side inner conductor is provided.

  The same type of connector is also disclosed in Patent Document 2 and Patent Document 3.

JP 2008-262736 A JP 2008-288120 A JP 2007-87682 A

  However, the coaxial connector disclosed in Patent Document 1 uses separate urging members for pressing contact between the movable inner conductor and the movable outer conductor. That is, the movable side inner conductor and the movable side outer conductor are brought into contact with the fixed side inner conductor and the fixed side outer conductor using separate biasing members. Therefore, the number of parts is large and the structure is complicated.

  The connectors disclosed in Patent Document 2 and Patent Document 3 also have the same problem.

  Therefore, an object of the present invention is to provide a coaxial connector provided with a floating mechanism that requires a small number of parts.

  According to one aspect of the present invention, a shell having a front wall having a hole penetrating in the axial direction, a first flange portion in contact with the rear surface of the front wall, and in a radial direction perpendicular to the axial direction. A movable-side inner conductor having a movable-side outer conductor inserted through the hole in a movable state, an insulating rubber member in contact with the rear surface of the first flange portion, and a second flange portion in contact with the rear surface of the insulating rubber member And a fixed-side inner conductor held by an insulator at the rear portion of the shell and in contact with the rear end surface of the movable-side inner conductor, the insulating rubber member including the first flange portion and the second flange portion The first flange portion and the movable side inner conductor are brought into pressure contact with the rear surface of the front wall and the front surface of the fixed side inner conductor by the elastic force of the insulating rubber member, respectively. Coaxial connector characterized by It is obtained.

  The second flange portion may have a peripheral wall portion that protrudes rearward from an outer peripheral portion thereof, and the insulating rubber member may be fitted and held in the peripheral wall portion.

  The movable-side outer conductor may have a contact portion that protrudes forward from the hole, and may further include a guide shell that surrounds the contact portion and guides connection with a counterpart coaxial connector.

  The movable inner conductor may be a pin contact.

  The fixed-side inner conductor is held by the insulator by press-fitting a press-fit portion provided on the outer peripheral portion thereof into a press-fitting hole provided in the insulator, and the insulator is provided in a backward-facing step provided on the outer peripheral portion. A ring-shaped holding member having an engaging portion that engages with the portion in the axial direction is press-fitted, and the holding member is further press-fitted into the rear opening of the shell, so that the holding member is held in the rear opening of the shell. It may be.

  The fixed-side inner conductor is held by the insulator by press-fitting a press-fit portion provided on the outer peripheral portion thereof into a pressure hole provided in the insulator, and the insulator is provided in a rearward direction provided on the outer peripheral portion. The step may be held in the rear opening of the shell by engaging a latching claw provided at the rear opening end of the shell.

  An attachment flange portion that is attached to and fixed to the attachment object may be provided on the outer peripheral portion of the shell.

  The movable inner conductor may be held through the insulating rubber member so as to be positioned on the central axis of the movable outer conductor.

  According to another aspect of the present invention, a coaxial having a floating mechanism including a fixed portion extending in the axial direction and a movable portion electrically connected in a radially movable manner to one axial end portion of the fixed portion. An elastic member acting elastically in the axial direction between an inner conductor and an outer conductor of the movable part, and the elastic member allows the inner conductor and the outer conductor to be connected to the fixed part by the elastic member; A coaxial connector is obtained in which the inner conductor and the outer conductor are pressed against each other in the axial direction opposite to each other.

  The above-described coaxial connector urges both the movable outer conductor and inner conductor by a single insulating rubber member that acts as a spring and presses them against the fixed shell and the inner conductor. Can be provided.

The longitudinal cross-sectional view of the coaxial connector which concerns on one Embodiment of this invention. The disassembled perspective view of the coaxial connector of FIG. The enlarged view of only the principal part of the coaxial connector of FIG. The longitudinal cross-sectional view which shows the state after the floating of the coaxial connector of FIG. The schematic perspective view before the connection which shows the coaxial connector of FIG. 1 with the other party coaxial connector used as a connection other party. The longitudinal cross-sectional view which shows the state after the connection of the coaxial connector of FIG. 1 and the other party coaxial connector. The perspective view which shows the modification of the movable side internal conductor contained in the coaxial connector of FIG. The longitudinal cross-sectional view which shows the modification of the coaxial connector of FIG. The longitudinal cross-sectional view which shows the connection state of the other modification of the coaxial connector of FIG.

  A coaxial connector according to an embodiment of the present invention will be described with reference to FIGS.

  The coaxial connector shown in FIGS. 1 and 2 includes a fixed portion 1 extending in the left-right direction (hereinafter referred to as “axial direction”) and a movable portion 2 electrically connected to the front end of the fixed portion 1. Including. Between the fixed part 1 and the movable part 2, there is provided a floating mechanism that makes the movable part 2 movable in the radial direction with respect to the fixed part 1.

  The fixed portion 1 has a cylindrical shape, a conductive shell 5 as a fixed-side outer conductor provided with a front wall 4 having a hole 3 at the front end (left end in the figure), and a fixed-side inner portion having a contact surface 6 at the front end. And conductor 7. The shell 5 has an outward mounting flange 8 for mounting to a housing (not shown) of an electronic device or an electrical device. The fixed-side inner conductor 7 is inserted into the cylindrical insulator 9 and press-fits a large-diameter press-fit portion 71 into the press-fit hole 91. Thus, the first integrated component composed of the fixed-side inner conductor 7 and the insulator 9 is formed.

  The movable part 2 is inserted in the hole 3 of the shell 5 in the axial direction and is movable in the radial direction, and a ring-shaped insulating rubber member 12 held at the rear end of the movable side outer conductor 11. And a movable inner conductor 13 held by the insulating rubber member 12. That is, the movable-side outer conductor 11 and the movable-side inner conductor 13 constitute a second integrated component in which the insulating rubber member 12 is coupled.

  The movable outer conductor 11 includes a front contact portion 14 configured in a cylindrical shape, a first flange portion 15 in contact with the rear surface of the front wall 4 of the shell 5 at the rear end (right end in the drawing), and a first flange. The peripheral wall portion 16 extends rearward from the peripheral end of the portion 15 in close contact with the peripheral end surface of the insulating rubber member 12. In other words, the insulating rubber member 12 is fitted and held in a recess formed by the first flange portion 15 and the peripheral wall portion 16.

  On the other hand, the movable-side inner conductor 13 includes a pin-type contact portion 17 extending in the axial direction through the inside of the movable-side outer conductor 11 on the central axis of the movable-side outer conductor 11, and penetrating the insulating rubber member 12. And a second flange portion 18 formed integrally with the rear end portion of the contact portion 17. The second flange portion 18 extends radially outward while being in close contact with the rear end surface of the insulating rubber member 12.

  The above-described second integrated component is inserted into the shell 5 from behind, and the movable outer conductor 11 and the contact portion 17 of the movable inner conductor 13 are projected forward through the hole 3 of the shell 5. The Furthermore, a guide shell 19 is provided outside the movable-side outer conductor 11 to guide the fitting with a mating connector (see FIGS. 5 and 6) to be connected. The guide shell 19 and the movable outer conductor 11 are fixed by press fitting or the like. It should be noted that a relatively wide gap is left between the periphery of the movable outer conductor 11 and the hole 3 and a relatively narrow gap is left between the front wall 4 and the guide shell rear end surface. 3 so that it can be easily moved in the radial direction.

  After the second integrated part is assembled to the shell 5, the first integrated part is assembled to the rear opening end of the shell 5. The first integrated component is assembled as follows. First, the front part of the first integrated component is inserted into the rear part of the shell 5, and the contact surface 6 at the front end of the fixed-side inner conductor 7 is brought into contact with the rear end of the movable-side inner conductor 13. Next, the metal holding member 22 is inserted into the gap around the insulator 9, and the engaging portion 24 of the holding member 22 is engaged with the rearward stepped portion 23 of the insulator 9. Furthermore, the first integrated component is moved forward by pushing the holding member 22 into the shell 5. As a result, the fixed-side inner conductor 7 pushes and moves the movable-side inner conductor 13 forward, and the insulating rubber member 12 is compressed. The holding member 22 is fixed to the shell 5 by press fitting or the like while the insulating rubber member 12 is appropriately compressed. Thus, the first integrated component is held fixed to the shell 5. The press-fitting between the shell 5 and the holding member 22 is a metal press-fitting, so that it has sufficient strength electrically and mechanically, and therefore it can be considered that no contact point is formed between them.

  The compressed insulating rubber member 12 functions as an elastic member that acts elastically in the axial direction, and generates a repulsive force or a repulsive force as indicated by a thick arrow in FIG. Due to the elastic force, the first flange portion 14 and the movable inner conductor 13 are pressed against the rear surface of the front wall 4 of the shell 5 and the contact surface 21 of the fixed inner conductor 7, respectively.

  According to the coaxial connector described above, the contact portion between the first flange portion 14 and the front wall 4 of the shell 5 becomes the only contact portion in the outer conductor composed of the movable outer conductor 11 and the shell 5. The repulsive force of the contact portion is transmitted to the movable side inner conductor 13, the fixed side inner conductor 7, and the insulator 12 and is received by the holding member 11. Therefore, a constant dimension can be maintained.

  Further, the shell 5 and the movable side outer conductor 11, the movable side inner conductor 13 and the fixed side inner conductor 7 are only pressed against each other by the repulsive force of the insulating rubber member 12. Therefore, the second integrated component and the guide shell 19 can slide sideways in the radial direction as shown in FIG. That is, when the shell 5, the holding member 11, the insulator 9, and the fixed inner conductor 7 are fixed, if a radial external force is applied from the opening side of the connector, for example, the guide shell 19, the guide shell 19, The movable side inner conductor 13, the movable side outer conductor 11, and the insulating rubber member 12 can be moved together in the radial direction.

  Further, only one spring connection is required for the outer conductor composed of the shell 5 serving as the fixed outer conductor and the movable outer conductor 11. That is, the contact portion is simplified by using the insulating rubber member 12. In addition, since the insulating property is maintained by the insulating rubber member 12, it is not necessary to provide a special part to maintain the insulating property. Therefore, it is possible to simplify the structure by reducing the number of parts.

  5 and 6 show the coaxial connector 30 of FIG. 1 together with a coaxial connector 40 (hereinafter referred to as “mating coaxial connector”) 40 to be connected. The counterpart coaxial connector 40 includes a cylindrical conductive shell 41, a cylindrical insulator 42 inserted inside the shell 41, and a conductive socket type contact 43 inserted inside the insulator 42. Is included.

  At the time of connection, as shown in FIG. 5, the coaxial connector 30 and the counterpart coaxial connector 40 are opposed to each other in the axial direction. Then, the shell 41 of the counterpart coaxial connector 40 is contact-fitted to the inside of the guide shell 19 of the coaxial connector 30. At this time, the contact 43 of the counterpart coaxial connector 40 is also brought into contact with the contact portion 17 of the coaxial connector 30. Therefore, an electric circuit by the outer conductor and an electric circuit by the inner conductor are formed.

  Even if there is some axial misalignment between the coaxial connector 30 and the counterpart coaxial connector 40 when facing each other, as shown in FIG. 4, the guide shell 19, the movable inner conductor 13, the movable outer The coaxial connector 30 and the counterpart coaxial connector 40 can be appropriately fitted and connected to each other as the conductor 11 and the insulating rubber member 12 are integrally moved in the radial direction. In order to automatically obtain this action, the guide slopes 19 a and 41 a may be provided on the guide shell 19 of the coaxial connector 30 and the shell 41 of the counterpart coaxial connector 40.

  As shown in FIG. 7, the contact portion 17 of the movable inner conductor 13 may be a socket type.

  In the above description, the example in which the first integrated component is fixed to the shell 5 using the holding member 22 has been described. However, as shown in FIG. The joint claw 5a may be formed, and the engagement claw 5a may be swaged and engaged with the rearward stepped portion 23 of the insulator 9, thereby holding the first integrated component fixed to the shell 5.

  Further, as shown in FIG. 9, when a watertight member such as O-rings 61, 62, 63, and 64 is appropriately disposed at the joined part and the coaxial connector 30 and the mating coaxial connector 40 are in a fitted state. The water may be prevented from entering the vicinity of the inner conductor.

  In addition, although it demonstrated using some embodiment above, it cannot be overemphasized that this invention is not limited to these embodiment.

  The present invention can be applied to a coaxial connector provided on a panel or substrate of an electronic device or an electric device.

DESCRIPTION OF SYMBOLS 1 Fixed part 2 Movable part 3 Hole 4 Front wall 5 Shell 5a Engaging claw 6 Contact surface 7 Fixed side inner conductor 8 Mounting flange 9 Insulator 11 Movable side outer conductor 12 Insulating rubber member 13 Movable side inner conductor 14 Contact part 15 1st 1 flange portion 16 peripheral wall portion 17 contact portion 18 second flange portion 19 guide shell 19a guide slope 22 holding member 23 rearward stepped portion 24 engagement portion 30 coaxial connector 40 mating coaxial connector 41 shell 41a guide slope 42 insulator 43 contact 61, 62, 63, 64 O-ring 71 Press-fit part 91 Press-fit hole

Claims (9)

  A shell having a front wall having a hole penetrating in the axial direction and a first flange portion in contact with the rear surface of the front wall are inserted into the hole while being movable in a radial direction perpendicular to the axial direction. A movable outer conductor, an insulating rubber member in contact with the rear surface of the first flange portion, a movable inner conductor having a second flange portion in contact with the rear surface of the insulating rubber member, and an insulator in the rear portion of the shell A fixed-side inner conductor held in contact with a rear end surface of the movable-side inner conductor, and the insulating rubber member is disposed in a compressed state between the first flange portion and the second flange portion. The coaxial connector is characterized in that the first flange portion and the movable inner conductor are pressed against the rear surface of the front wall and the front surface of the fixed inner conductor by the elastic force of the insulating rubber member, respectively.   2. The coaxial connector according to claim 1, wherein the second flange portion has a peripheral wall portion protruding rearward from an outer peripheral portion thereof, and the insulating rubber member is fitted and held in the peripheral wall portion. .   The movable outer conductor has a contact portion protruding forward from the hole, and further includes a guide shell that surrounds the contact portion and guides connection with a counterpart coaxial connector. The coaxial connector according to claim 1 or 2.   The coaxial connector according to any one of claims 1 to 3, wherein the movable inner conductor is a pin contact.   The fixed-side inner conductor is held by the insulator by press-fitting a press-fit portion provided on the outer peripheral portion thereof into a press-fitting hole provided in the insulator, and the insulator is provided in a backward-facing step provided on the outer peripheral portion. A ring-shaped holding member having an engaging portion that engages with the portion in the axial direction is press-fitted, and the holding member is further press-fitted into the rear opening of the shell, so that the holding member is held in the rear opening of the shell. The coaxial connector according to any one of claims 1 to 4, wherein the coaxial connector is provided.   The fixed-side inner conductor is held by the press-fitting portion provided on the outer peripheral portion thereof into a pressure hole provided in the insulator, thereby holding the insulator. 5. The holding portion of the shell is held by the rear opening portion of the shell by engaging a latching claw provided at the end portion of the rear opening portion of the shell. The coaxial connector according to any one of the above.   The coaxial connector according to any one of claims 1 to 6, wherein an attachment flange portion that is attached and fixed to an attachment object is provided on an outer peripheral portion of the shell.   The said movable side inner conductor is penetrated and hold | maintained at the said insulating rubber member so that it may be located on the central axis of the said movable side outer conductor, The Claim 1 thru | or 7 characterized by the above-mentioned. Coaxial connector.   A coaxial connector having a floating mechanism including a fixed portion extending in an axial direction and a movable portion electrically connected in a radially movable state to one axial end portion of the fixed portion, An elastic member acting elastically in the axial direction is interposed between the conductor and the outer conductor, and the inner conductor and the outer conductor are respectively axially connected to the inner conductor and the outer conductor of the fixed portion by the elastic member. A coaxial connector characterized by being pressed in opposite directions.

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