WO2009157220A1 - 同軸コネクタ - Google Patents
同軸コネクタ Download PDFInfo
- Publication number
- WO2009157220A1 WO2009157220A1 PCT/JP2009/054632 JP2009054632W WO2009157220A1 WO 2009157220 A1 WO2009157220 A1 WO 2009157220A1 JP 2009054632 W JP2009054632 W JP 2009054632W WO 2009157220 A1 WO2009157220 A1 WO 2009157220A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coaxial connector
- contact
- fixed
- leaf spring
- terminal
- Prior art date
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
- H01R24/42—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
- H01R24/44—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches comprising impedance matching means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2103/00—Two poles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/02—Connectors or connections adapted for particular applications for antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
- H01R24/50—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted on a PCB [Printed Circuit Board]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S439/00—Electrical connectors
- Y10S439/944—Coaxial connector having circuit-interrupting provision effected by mating or having "dead" contact activated after mating
Definitions
- the present invention relates to a coaxial connector, and more particularly to a coaxial connector that is incorporated in a mobile communication device such as a mobile phone and switches a signal path.
- FIG. 10 is a cross-sectional structure diagram of the coaxial connector 110 described in Patent Document 1.
- FIG. 11 is an external perspective view showing the case 118, the movable terminal 120, and the fixed terminal 122 of the coaxial connector 110. 10 and 11, the direction in which the external terminal 114 and the cases 116 and 118 are overlapped is the z-axis direction. Further, the direction in which the movable terminal 120 and the fixed terminal 122 are arranged is the x-axis direction, and the direction orthogonal to the x-axis direction and the z-axis direction is the y-axis direction.
- the coaxial connector 110 includes a main body 112, a movable terminal 120, and a fixed terminal 122.
- the main body 112 includes an external terminal 114 and cases 116 and 118.
- the movable terminal 120 and the fixed terminal 122 are attached on the case 118.
- the fixed terminal 122 is attached to the positive direction side in the x-axis direction and includes a fixed portion 148 and a contact portion 150.
- the fixing portion 148 is sandwiched between the case 116 and the case 118 and fixes the fixing terminal 122 to the main body 112.
- the contact part 150 protrudes from the fixed part 148 in the negative direction in the x-axis direction.
- the movable terminal 120 is attached to the negative direction side in the x-axis direction, and includes a fixed portion 142, a leaf spring portion 144, and a contact portion 146.
- the fixing portion 142 is sandwiched between the case 116 and the case 118 and fixes the movable terminal 120 to the main body 112.
- the leaf spring portion 144 extends in the y-axis direction and is in contact with the case 118 at both ends in the y-axis direction. Further, the leaf spring portion 144 has a curved shape so as to protrude in the positive direction of the z-axis direction.
- the contact portion 146 protrudes from the central portion in the y-axis direction of the leaf spring portion 144 in the positive direction in the x-axis direction, and is in pressure contact with the contact portion 150 by the urging force of the leaf spring portion 144.
- the coaxial connector 110 configured as described above is provided, for example, between a mobile phone antenna and a transmission / reception circuit.
- the fixed terminal 122 is connected to the antenna
- the movable terminal 120 is connected to the transmission / reception circuit.
- the antenna and the transmission / reception circuit are connected.
- the probe 130 to which the measuring device is connected moves from the positive direction in the z-axis direction to the negative direction. It is inserted into the main body 112.
- plate spring part 144 is extended in the y-axis direction.
- the leaf spring portion 144 needs to have a sufficient length in the y-axis direction in order to exert an appropriate elastic force. Therefore, in the signal path constituted by the movable terminal 120 and the fixed terminal 122, the leaf spring portion 144 becomes thicker than the other portions (fixed portions 142 and 148). As described above, when the leaf spring portion 144 is thicker than the other portions, impedance matching in the leaf spring portion 144 is lost. As a result, the high frequency characteristics of the coaxial connector 110 are deteriorated. JP 2002-42991 A
- an object of the present invention is to provide a coaxial connector having excellent high frequency characteristics.
- a coaxial connector includes a main body in which a hole into which a probe is inserted is formed, a fixed terminal fixed to the main body, a movable terminal fixing portion fixed to the main body, and A leaf spring portion extending from the movable terminal fixed portion toward the fixed terminal, the leaf spring portion being in contact with the fixed terminal and including the leaf spring portion in contact with the main body at the tip.
- a movable terminal wherein the leaf spring portion is displaced by the probe in a direction away from the fixed terminal.
- the leaf spring portion extends from the movable terminal fixing portion toward the fixed terminal, it becomes easy to achieve impedance matching in the coaxial connector, and a coaxial connector excellent in high frequency characteristics is obtained. Can do.
- FIG. 1 is an external perspective view of a coaxial connector according to an embodiment of the present invention. It is a disassembled perspective view of the coaxial connector of FIG. It is a disassembled perspective view of the coaxial connector of FIG. It is an external appearance perspective view of the state where the movable terminal and the fixed terminal were attached on the lower case. It is an external appearance perspective view in the state where the movable terminal and the fixed terminal were attached on the upper case.
- FIG. 6A is a cross-sectional structure diagram in the xz plane of the coaxial connector when the counterpart coaxial connector is not attached.
- FIG. 6B is a cross-sectional structure diagram in the xz plane of the coaxial connector when the counterpart coaxial connector is attached.
- FIG. 1 is an external perspective view of a coaxial connector 10 according to an embodiment of the present invention.
- 2 and 3 are exploded perspective views of the coaxial connector 10. The details of the coaxial connector (coaxial receptacle) 10 will be described below.
- a direction in which the external terminal 14, the upper case 16, and the lower case 18 are overlapped is a z-axis direction.
- the positive direction in the z-axis direction is a direction from the lower case 18 toward the external terminal 14.
- the direction in which the movable terminal 20 and the fixed terminal 22 are arranged is the x-axis direction
- the direction orthogonal to the x-axis direction and the z-axis direction is the y-axis direction.
- the positive direction in the x-axis direction is a direction from the movable terminal 20 toward the fixed terminal 22.
- the coaxial connector 10 includes a main body 12, a movable terminal 20 made of metal (for example, stainless steel of SUS301), and a fixed terminal 22, and has a size of 2 mm ⁇ 2 mm ⁇ 0.9 mm. .
- the main body 12 includes a metal external terminal 14, a resin upper case 16, and a lower case 18 that are stacked in this order from the positive direction side to the negative direction side in the z-axis direction. Has been.
- the lower case 18 has a rectangular shape and has protrusions 52a and 52b for positioning the upper case 16 on the surface on the positive side in the z-axis direction.
- the protrusions 52a and 52b extend in the x-axis direction along the sides located at both ends in the y-axis direction in the lower case 18.
- the lower case 18 is provided with holes 53a and 53b.
- rectangular cutouts for allowing the movable terminal 20 and the fixed terminal 22 to be drawn to the outside are provided at the center of each of the two sides extending in the y-axis direction of the lower case 18. Portions 54 and 55 are formed. Further, a projection 56 for positioning the movable terminal 20 is provided in the vicinity of the notch 54 in the positive direction side in the x-axis direction. A fixing surface 57 for fixing the movable terminal 20 is provided between the notch 54 and the protrusion 56. On the other hand, a fixing surface 58 for fixing the fixing terminal 22 is provided in the vicinity of the notch portion 55 on the negative side in the x-axis direction.
- the upper case 16 includes a cylindrical portion 34 and a cover portion 35 as shown in FIG.
- the cover part 35 is a plate-like member having an outer shape along the protrusions 52a and 52b, and is fitted between the protrusions 52a and 52b.
- the cylindrical portion 34 protrudes toward the positive direction side in the z-axis direction at the center of the cover portion 35.
- the cylindrical portion 34 has a mortar-shaped opening 34a on the positive side in the z-axis direction, and a hole 34a having a circular cross section on the xy plane.
- the hole 34a passes through the upper case 16.
- the probe of the counterpart coaxial connector is inserted into the hole 34a from the mortar-shaped opening side.
- two cylindrical ribs 36a and 36b projecting to the negative direction side in the z-axis direction are provided on the surface of the upper case 16 on the negative direction side in the z-axis direction.
- the ribs 36a and 36b are respectively inserted into holes 53a and 53b provided in the lower case 18, thereby positioning the upper case 16 and the lower case 18.
- a fixed surface 37 for fixing the movable terminal 20 is provided on the negative side surface in the z-axis direction of the upper case 16 near the end on the negative direction side in the x-axis direction. Yes.
- the fixed surface 37 fixes the movable terminal 20 with the fixed surface 57 when the coaxial connector 10 is assembled.
- a fixed surface 39 for fixing the fixed terminal 22 is provided near the end on the positive side in the x-axis direction on the surface on the negative side in the z-axis direction of the upper case 16.
- the fixed surface 39 fixes the fixed surface 22 with the fixed terminal 22 sandwiched therebetween.
- a mounting portion 38 is provided on the negative side of the fixed surface 39 in the x-axis direction.
- the mounting portion 38 is provided on the surface of the upper case 16 on the negative direction side in the z-axis direction so as to protrude toward the negative direction side in the z-axis direction. 50a and 50b are placed.
- FIG. 4 is an external perspective view of the state in which the movable terminal 20 and the fixed terminal 22 are mounted on the lower case 18.
- FIG. 5 is an external perspective view of the state in which the movable terminal 20 and the fixed terminal 22 are mounted on the upper case 16.
- the fixed terminal 22 is formed by punching and bending a flat metal plate, and includes a fixed portion 48, a lead portion 49, and contact portions 50a and 50b as shown in FIGS. .
- the fixing portion 48 is a flat portion that is fixed to the main body 12 by being sandwiched between the fixing surface 39 and the fixing surface 58 when the coaxial connector 10 is assembled.
- the lead portion 49 is formed by bending the fixing portion 48 into an L shape. As shown in FIGS. 1 and 4, when the coaxial connector 10 is assembled, the lead portion 49 extends from the notch portion 55 to the body 12. Exposed outside. As shown in FIGS.
- the contact portions 50 a and 50 b are formed by bending the fixed portion 48 to the positive side in the z-axis direction, and contact the movable terminal 20 at a portion facing the negative direction side in the z-axis direction. To do. Two contact portions 50a and 50b are provided so as to correspond to branch portions 44a and 44b described later. Further, the broken line between the contact portions 50a, 50b and the fixed portion 48 is parallel to the x-axis direction. As shown in FIG. 5, the fixing portion 48 between the contact portions 50 a and 50 b and the contact portions 50 a and 50 b are placed on a placement portion 38 having a shape along the contact portions 50 a and 50 b and the fixing portion 48. .
- the movable terminal 20 is formed by punching a metal plate having a spring property into a predetermined shape and bending it.
- the fixed portion 42, the lead portion 43, and the plate spring portion 44 are provided. I have.
- the fixing portion 42 is a flat portion that is fixed to the main body 12 by being sandwiched between the fixing surface 37 and the fixing surface 57 when the coaxial connector 10 is assembled.
- the lead portion 43 is formed by bending the fixed portion 42 into an L shape. As shown in FIGS. 1 and 4, when the coaxial connector 10 is assembled, the lead portion 43 extends from the notch portion 54 to the body 12. Exposed outside.
- the leaf spring portion 44 extends linearly in the x-axis direction from the fixed portion 42 toward the fixed terminal 22, and is in contact with the contact portions 50 a and 50 b of the fixed terminal 22.
- the tips ta and tb are slidably in contact with the lower case 18.
- the leaf spring portion 44 has branch portions 44a and 44b that are formed by branching into two on the tip end ta and tb side (the positive direction side in the x-axis direction).
- the fixed terminal 22 is located between the branch portions 44a and 44b, and the contact portions 50a and 50b of the fixed terminal 22 respectively overlap with the branch portions 44a and 44b when viewed in plan from the z-axis direction.
- plate spring part 44 is curving so that it may protrude in the positive direction side of az axis direction. Therefore, the branch portions 44a and 44b are in pressure contact with the contact portions 50a and 50b by the urging force of the leaf spring portion 44, respectively. Thereby, the movable terminal 20 and the fixed terminal 22 are electrically connected.
- a hole 45 is formed across the leaf spring portion 44 and the fixed portion 42. As shown in FIG. 4, a protrusion 56 is inserted into the hole 45. Thereby, the movable terminal 20 is positioned in the xy plane.
- the movable terminal 20 and the fixed terminal 22 configured as described above are first attached to the upper case 16 and then the movable terminal 20 is attached to the upper case 16. Thereby, the part of the branch parts 44a and 44b on the positive direction side in the z-axis direction and the part of the contact parts 50a and 50b on the negative direction side in the z-axis direction come into contact.
- the external terminal 14 is in contact with the outer conductor of the counterpart coaxial connector, and is formed by punching a metal plate of stainless steel (for example, SUS301), bending, drawing, etc. As shown in FIG. 1 and FIG. The cylindrical portion 32 and the leg portions 33a and 33b are provided.
- the flat part 31 is a plate-like member and covers the upper case 16 from the positive direction side in the z-axis direction.
- Legs 33a and 33b are provided on the sides of the flat portion 31 located at both ends in the y-axis direction.
- the leg portions 33a and 33b are formed by bending a part of a plate-like body extending in the y-axis direction from the flat portion 31, and are fixed by sandwiching the upper case 16 and the lower case 18 as shown in FIG. To do.
- a cylindrical portion 32 that protrudes toward the positive side in the z-axis direction is provided at the center of the flat portion 31.
- the cylindrical portion 32 is formed so as to be concentric with the cylindrical portion 34 and is fitted to the outer conductor of the counterpart coaxial connector.
- the external terminal 14 normally functions as a ground, and the outer surface of the external terminal 14 is plated as necessary.
- the coaxial connector 10 configured as described above is assembled as follows. As shown in FIG. 5, the fixed terminal 22 is aligned and attached to the upper case 16, and then the movable terminal 20 is aligned and attached to the upper case 16. In FIG. 5, the leg portions 33a and 33b are bent, but actually, the leg portions 33a and 33b are not bent at this stage.
- the external terminal 14 is attached to the upper case 16 from the positive direction side in the z-axis direction.
- the cylindrical portion 34 is inserted into the cylindrical portion 32.
- the lower case 18 is stacked on the upper case 16 from the negative direction side in the z-axis direction.
- the ribs 36a and 36b are inserted into the holes 53a and 53b.
- leg portions 33a and 33b of the external terminal 14 are caulked to obtain the coaxial connector 10 having the structure as shown in FIG.
- FIG. 6A is a cross-sectional structure diagram in the xz plane of the coaxial connector 10 when the counterpart coaxial connector is not attached.
- FIG. 6B is a cross-sectional structure diagram in the xz plane of the coaxial connector 10 when the counterpart coaxial connector is attached.
- the movable terminal 20 when the counterpart coaxial connector is not attached, the movable terminal 20 is in a state where the central portion in the x-axis direction swells to the positive side in the z-axis direction. Accordingly, the branch portions 44a and 44b (only the branch portion 44a is shown in FIG. 6) are pressed against the contact portions 50a and 50b (only the contact portion 50a is shown in FIG. 6) by the urging force of the leaf spring portion 44. The movable terminal 20 and the fixed terminal 22 are electrically connected.
- the probe 130 of the counterpart coaxial connector is inserted from the positive side in the z-axis direction to the negative side through the hole 34a.
- the probe 130 contacts the leaf spring portion 44 and pushes down the leaf spring portion 44 toward the negative direction side in the z-axis direction. That is, the leaf spring portion 44 is displaced in the direction away from the fixed terminal 22 by the probe 130. 6B, the branch portions 44a and 44b of the leaf spring portion 44 are separated from the contact portions 50a and 50b, and the electrical connection between the movable terminal 20 and the fixed terminal 22 is cut off.
- the probe 130 and the movable terminal 20 are electrically connected.
- the outer conductor (not shown) of the counterpart coaxial connector is fitted into the external terminal 14, and the outer conductor is also electrically connected to the external terminal 14.
- the coaxial connector 10 can easily perform impedance matching as compared with the coaxial connector 110 of FIG. More specifically, in the coaxial connector 110 shown in FIG. 11, since the extending direction of the leaf spring portion 144 and the signal path are orthogonal, the thickness of the signal path changes abruptly in the middle of the signal path. . Therefore, impedance matching is lost in the coaxial connector 110.
- the leaf spring portion 44 extends linearly from the fixed portion 42 toward the fixed terminal 22 and is electrically connected to the fixed terminal 22.
- the extending direction of the leaf spring portion 44 coincides with the signal path connecting the movable terminal 20 and the fixed terminal 22.
- the length of the leaf spring portion 44 needs to be large enough to obtain an appropriate elastic force, whereas the width of the leaf spring portion 44 is about the length of the leaf spring portion 44. Does not require size. Therefore, impedance matching can be achieved by setting the width of the leaf spring portion 44 to a size close to the width of the fixed terminal 22 and the width of other portions of the movable terminal 20. As a result, the coaxial connector 10 having excellent high frequency characteristics can be obtained.
- the size can be reduced as compared with the coaxial connector 110 of FIG. More specifically, in the coaxial connector 110 shown in FIG. 11, the extending direction of the leaf spring portion 144 and the direction of the signal path are orthogonal to each other. For this reason, the coaxial connector 110 needs to have a width that is at least the length of the leaf spring portion 144 in the y-axis direction.
- the leaf spring portion 44 extends from the fixed portion 42 toward the fixed terminal 22 and is electrically connected to the fixed terminal 22.
- the signal path connecting the extending direction of the leaf spring portion 44 and the movable terminal 20 and the fixed terminal 22 coincides.
- the width of the coaxial connector 10 in the y-axis direction is smaller than the width of the coaxial connector 110 in the y-axis direction, and the coaxial connector 10 can be downsized.
- the extending direction of the leaf spring portion 144 and the signal path connecting the movable terminal 120 and the fixed terminal 122 are orthogonal to each other. Therefore, in order to connect the fixing portion 142 and the leaf spring portion 144, the fixing portion 142 is branched and connected to both ends of the leaf spring portion 144, and the leaf spring portion 144 is made easy to move. It was necessary to provide a slit S between the 144 and the fixing portion 142. Therefore, the coaxial connector 110 is increased in size by the length of the fixing portion 142 and the slit S.
- the extending direction of the leaf spring portion 44 coincides with the signal path connecting the movable terminal 20 and the fixed terminal 22.
- the leaf spring portion 44 can be operated by fixing only one end (fixing portion 42) of the leaf spring portion 44. Therefore, in the coaxial connector 10, there is no need to route the fixing portion 42 or provide the slit S. As a result, the coaxial connector 10 can be reduced in size.
- the coaxial connector 10 can be reduced in height as compared with the coaxial connector 110 as described below. More specifically, in the coaxial connector 110, as shown in FIG. 10, the fixed portion 148 is located on the positive side in the z-axis direction with respect to the movable terminal 120, and the contact portion 150 extends from the fixed portion 148 to the z direction. It is bent on the negative side in the axial direction. The contact portion 150 is in contact with the movable terminal 120 on the surface facing the negative direction side in the z-axis direction.
- the surface of the fixed portion 148 of the fixed terminal 122 on the positive direction side in the z-axis direction is larger in thickness and the fixed portion of the contact portion 150 than the surface of the movable terminal 120 on the positive direction side in the z-axis direction.
- the position is higher by the thickness of 148.
- the distance from the bottom surface to the uppermost surface of the movable terminal 120 or the fixed terminal 122 was 0.35 mm.
- the fixed terminal 22 is located between the branch portions 44a and 44b.
- the contact portions 50a and 50b formed by bending the fixed portion 48 of the fixed terminal 22 in the positive z-axis direction are in contact with the branch portions 44a and 44b. Therefore, as shown in FIG. 6A, the leaf spring portion 44 and the fixing portion 48 can be positioned at substantially the same height in the z-axis direction.
- the surface on the positive direction side in the z-axis direction of the fixed portion 48 is slightly lower than the surface on the positive direction side in the z-axis direction of the leaf spring portion 44.
- the thickness of the fixed terminal 22 is reduced by the thickness of the contact portion 150 and the thickness of the fixed portion 148 compared to the coaxial connector 110. Therefore, the coaxial connector 10 can be reduced in height as compared with the coaxial connector 110.
- the distance from the bottom surface to the surface on the positive direction side in the z-axis direction of the fixing portion 48 of the fixed terminal 22 was 0.28 mm.
- the fixed terminal 22 is located between the branch part 44a and the branch part 44b. That is, the tips ta and tb of the leaf spring portion 44 are arranged so as to be aligned with the fixed terminal 22 in the y-axis direction. Therefore, even if the branch portions 44a and 44b become longer, there is no possibility that the tips ta and tb of the branch portions 44a and 44b come into contact with the fixed terminal 22. Thereby, branch part 44a, 44b can be taken long enough, and it will become easy to provide the leaf
- the branch part 44a and the contact part 50a are contacting, and the branch part 44b and the contact part 50b are contacting. That is, the movable terminal 20 and the fixed terminal 22 are in contact at two places. Therefore, in the coaxial connector 10, the movable terminal 20 and the fixed terminal 22 can be reliably connected as compared with the case where the movable terminal and the fixed terminal are in contact with each other.
- the stable resistance value in the coaxial connector 10 can be obtained.
- the surfaces of the contact portions 50a and 50b and the branch portions 44a and 44b have a certain degree of surface roughness. Therefore, when the contact portions 50a and 50b and the branch portions 44a and 44b are in contact with each other by a surface, the contact portions 50a and 50b and the branch portions 44a and 44b have a large number of points in the contact surface. Will be in contact. Therefore, the number of the many points varies greatly depending on the surface roughness, and the contact area between the contact portions 50a and 50b and the branch portions 44a and 44b varies greatly. As a result, the resistance value of the coaxial connector 10 varies greatly.
- the contact portions 50a and 50b are provided so as to be inclined in an oblique direction with respect to the z-axis direction. Therefore, the contact portions 50a and 50b come into contact with the ridge lines of the branch portions 44a and 44b. As a result, the contact portions 50a and 50b and the branch portions 44a and 44b come into contact with each other by points or lines. As described above, when the contact portions 50a, 50b and the branch portions 44a, 44b are in contact with each other by dots or lines, the contact portion 50a regardless of the surface roughness of the contact portions 50a, 50b and the branch portions 44a, 44b.
- 50b and the branch portions 44a, 44b are stable in contact area. Furthermore, when the contact portions 50a and 50b and the branch portions 44a and 44b are in contact with each other by points or lines, a large pressure is concentrated on these points or lines. As a result, the contact portions 50a and 50b and the branch portions 44a and 44b are firmly connected, and the contact area between the contact portions 50a and 50b and the branch portions 44a and 44b is stabilized. From the above, by bringing the contact portions 50a and 50b and the branch portions 44a and 44b into contact with each other by dots or lines, variations in the resistance value of the coaxial connector 10 can be suppressed.
- the contact portions 50a and 50b and the branch portions 44a and 44b are particularly preferably in contact with each other because the number of contact points is reduced.
- the contact portions 50a, 50b and the branch portions 44a, 44b are to be brought into contact with each other by points, the ridge lines of the contact portions 50a, 50b and the ridge lines of the branch portions 44a, 44b are intersected as shown by a point P in FIG. What is necessary is just to contact in the state.
- the leaf spring portion 44 In the coaxial connector 10, one end of the leaf spring portion 44 is fixed by the fixing portion 48, and the other end of the leaf spring portion 44 is slidably in contact with the lower case 18. Therefore, the leaf
- the coaxial connector 10 has lead portions 43 and 49 and leg portions 33a and 33b that are substantially flush with the bottom surface of the lower case 18, so that the surface can be mounted. It has become. Moreover, the cylindrical part 32 is formed in the external terminal 14, and a stable and reliable connection with the counterpart coaxial connector can be obtained.
- FIG. 7 is an external perspective view showing a state where the movable terminal 20 and the fixed terminal 22 are attached on the lower case 18 in the coaxial connector 10a according to the first modification.
- the broken line between the contact portions 50a and 50b and the fixed portion 48 may not be parallel to the x-axis. However, as described below, from the viewpoint of the reliability of the coaxial connectors 10 and 10a, the broken line between the contact portions 50a and 50b and the fixed portion 48 is parallel to the x-axis as shown in FIG. Is preferred.
- the broken line between the contact portions 50a and 50b and the fixing portion 48 is not parallel to the x-axis.
- the contact portions 50a and 50b come into contact with the branch portions 44a and 44b at the point P ′.
- the contact portions 50a and 50b and the fixed portion 48 are parallel to the x-axis, the contact portions 50a and 50b are more negative in the x-axis direction than the point P ′.
- the branches 44a and 44b come into contact. Since the point P is located closer to the negative side in the x-axis direction than the point P ′, it is located near the apex (the central part in the x-axis direction) of the leaf spring portion 44. In this case, as will be described below, even if the leaf spring portion 44 has been used and deformed for a long time, the contact portions 50a and 50b and the branch portions 44a and 44b are unlikely to be separated.
- FIG. 8 shows the movable terminal 20 and the fixed terminal 22.
- the movable terminal 20 is in pressure contact with the fixed terminal 22.
- the movable terminal 20 is pressed to the negative side in the z-axis direction by the contact portions 50a and 50b of the fixed terminal 22. Therefore, if the fixed terminal 22 does not exist, the movable terminal 20 takes a shape that protrudes more toward the positive side in the z-axis direction, as indicated by the dotted line in FIG.
- the movable terminal 20 undergoes plastic deformation or the like and gradually descends to the negative direction side in the z-axis direction.
- the contact portions 50a and 50b and the branch portions 44a and 44b are in contact at the point P
- the contact between the movable terminal 20 and the fixed terminal 22 is continued at the point P until the movable terminal 20 is lowered by the distance L1.
- the contact portions 50a, 50b and the branch portions 44a, 44b are in contact at the point P ′
- the movable terminal 20 and the fixed terminal 22 are simply moved down by the distance L2 at the point P ′. The contact with is lost.
- the contact portions 50a, 50b and the branch portions 44a, 44b are in contact with each other at the point P, they are repeatedly used or inserted for a long time than when they are in contact at the point P ′. This makes it difficult for the movable terminal 20 and the fixed terminal 22 to come off.
- the reliability of the coaxial connector 10 can be improved by making the fold lines of the contact portions 50a, 50b and the fixing portion 48 parallel to the x-axis as in the coaxial connector 10 of FIG.
- FIG. 9 is an external perspective view showing a state where the movable terminal 20 and the fixed terminal 22 are mounted on the lower case 18 in the coaxial connector 10b according to the second modification.
- the movable terminal 20 extends from the fixed portion 42 toward the fixed terminal 22 in a single state without branching.
- the leading end t of the movable terminal 20 is also recessed between the fixed terminal 22 and the lower case 18. Even with such a configuration, as with the coaxial connector 10, impedance matching can be achieved and downsizing can be achieved.
- the coaxial connector 10 shown in FIG. 4 is superior to the coaxial connector 10b shown in FIG. More specifically, in the coaxial connector 10 b shown in FIG. 9, the tip t of the movable terminal 20 is recessed between the fixed terminal 22 and the lower case 18. Therefore, when the leaf spring portion 44 is pressed by the probe 130, the distance between the tip t and the fixed terminal 22 becomes very small. Therefore, sufficient isolation between the movable terminal 20 and the fixed terminal 22 may not be ensured.
- the coaxial connector 10 shown in FIG. 4 the ends ta and tb are not caught between the fixed terminal 22 and the lower case 18, so there is no possibility of contact with the fixed terminal 22. Therefore, the coaxial connector 10 is superior in isolation between the movable terminal 20 and the fixed terminal 22 than the coaxial connector 10b.
- the present invention is useful for a coaxial connector, and is particularly excellent in that it is easy to obtain impedance matching in the coaxial connector and a coaxial connector excellent in high-frequency characteristics can be obtained.
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- Coupling Device And Connection With Printed Circuit (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
10,10a,10b 同軸コネクタ
12 本体
14 外部端子
16 上ケース
18 下ケース
20 可動端子
22 固定端子
32,34 円筒部
33a,33b 脚部
34a 穴
35 カバー部
36a,36b リブ
37,39,57,58 固定面
38 載置部
42,48 固定部
43,49 リード部
44 板ばね部
44a,44b 枝部
45,53a,53b 孔
50a,50b 接触部
52a,52b,56 突起
54,55 切り欠き部
なお、同軸コネクタ10は、前記実施形態に示したものに限らず、その要旨の範囲内において変形可能である。そこで、第1の変形例に係る同軸コネクタ10aについて図面を参照しながら説明する。図7は、第1の変形例に係る同軸コネクタ10aにおいて、下ケース18上に可動端子20及び固定端子22が取り付けられた状態の外観斜視図である。
Claims (9)
- プローブが挿入される穴が形成されている本体と、
前記本体に固定されている固定端子と、
前記本体に固定されている可動端子固定部、及び、該可動端子固定部から前記固定端子に向かって延在している板ばね部であって、該固定端子と接触していると共に、先端において該本体と接触している板ばね部を含んでいる可動端子と、
を備え、
前記板ばね部は、前記プローブにより、前記固定端子から離れる方向に変位させられること、
を特徴とする同軸コネクタ。 - 前記固定端子は、
前記本体に固定されている固定端子固定部と、
前記プローブが挿入される方向を下方向としたときに、前記固定端子固定部を上側に折り曲げて形成され、下側を向く部分において前記板ばね部と接触している接触部と、
を含んでいること、
を特徴とする請求の範囲第1項に記載の同軸コネクタ。 - 前記固定端子固定部は、前記プローブが挿入される方向を下方向としたときに、前記板ばね部よりも下側に位置していること、
を特徴とする請求の範囲第2項に記載の同軸コネクタ。 - 前記接触部と前記固定端子固定部との間の折れ線は、前記板ばね部が延在している方向に対して平行であること、
を特徴とする請求の範囲第2項又は請求の範囲第3項のいずれかに記載の同軸コネクタ。 - 前記板ばね部は、先端側において2つに枝分かれして形成されている2つの枝部を有しており、
前記固定端子は、前記2つの枝部の間に位置していること、
を特徴とする請求の範囲第2項ないし請求の範囲第4項のいずれかに記載の同軸コネクタ。 - 前記接触部は、前記2つの枝部のそれぞれに対応するように2つ設けられていること、
を特徴とする請求の範囲第5項に記載の同軸コネクタ。 - 前記板ばね部の先端は、前記固定端子と前記板ばね部が延在している方向と直交する方向に並んでいること、
を特徴とする請求の範囲第1項ないし請求の範囲第6項のいずれかに記載の同軸コネクタ。 - 前記固定端子と前記板ばね部とは、線又は点で接触していること、
を特徴とする請求の範囲第1項ないし請求の範囲第7項のいずれかに記載の同軸コネクタ。 - 前記板ばね部は、前記プローブが挿入される方向を下方向としたときに、上側に突出するように湾曲していること、
を特徴とする請求の範囲第1項ないし請求の範囲第8項のいずれかに記載の同軸コネクタ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980100028XA CN101765947B (zh) | 2008-06-25 | 2009-03-11 | 同轴连接器 |
EP09769930A EP2175531B1 (en) | 2008-06-25 | 2009-03-11 | Coaxial connector |
JP2009539548A JP4442719B2 (ja) | 2008-06-25 | 2009-03-11 | 同軸コネクタ |
AT09769930T ATE557453T1 (de) | 2008-06-25 | 2009-03-11 | Koaxialstecker |
US12/692,292 US8066516B2 (en) | 2008-06-25 | 2010-01-22 | Coaxial connector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008165468 | 2008-06-25 | ||
JP2008-165468 | 2008-06-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/692,292 Continuation US8066516B2 (en) | 2008-06-25 | 2010-01-22 | Coaxial connector |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009157220A1 true WO2009157220A1 (ja) | 2009-12-30 |
Family
ID=41444292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/054632 WO2009157220A1 (ja) | 2008-06-25 | 2009-03-11 | 同軸コネクタ |
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US (1) | US8066516B2 (ja) |
EP (1) | EP2175531B1 (ja) |
JP (1) | JP4442719B2 (ja) |
KR (1) | KR100984899B1 (ja) |
CN (1) | CN101765947B (ja) |
AT (1) | ATE557453T1 (ja) |
TW (1) | TW201001839A (ja) |
WO (1) | WO2009157220A1 (ja) |
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Also Published As
Publication number | Publication date |
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CN101765947B (zh) | 2012-09-05 |
TWI330916B (ja) | 2010-09-21 |
US20100130028A1 (en) | 2010-05-27 |
EP2175531B1 (en) | 2012-05-09 |
JP4442719B2 (ja) | 2010-03-31 |
US8066516B2 (en) | 2011-11-29 |
EP2175531A4 (en) | 2011-03-16 |
TW201001839A (en) | 2010-01-01 |
JPWO2009157220A1 (ja) | 2011-12-08 |
KR20100025579A (ko) | 2010-03-09 |
KR100984899B1 (ko) | 2010-10-01 |
ATE557453T1 (de) | 2012-05-15 |
CN101765947A (zh) | 2010-06-30 |
EP2175531A1 (en) | 2010-04-14 |
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