JP6024802B2 - Coaxial connector - Google Patents

Description

  The present invention relates to a coaxial connector, and more particularly to a coaxial connector that switches a signal path.

  As an invention related to a conventional coaxial connector, for example, a coaxial connector described in Patent Document 1 is known. FIG. 9 is an exploded perspective view of the coaxial connector 500 described in Patent Document 1. FIG. In FIG. 9, the vertical direction is defined as the z-axis direction, the direction in which the movable terminal 508 and the fixed terminal 510 are arranged is defined as the x-axis direction, and the direction orthogonal to the x-axis direction and the z-axis direction is defined as the y-axis direction. To do.

  As shown in FIG. 9, the coaxial connector 500 includes an external terminal 502, an upper case 504, a lower case 506, a movable terminal 508, and a fixed terminal 510. The external terminal 502 is made of a conductive material and is kept at the ground potential. The upper case 504 and the lower case 506 are made of an insulating material such as resin and constitute the main body of the coaxial connector 500. The external terminal 502, the upper case 504, and the lower case 506 are stacked in this order from the positive direction side in the z-axis direction to the negative direction side.

  The movable terminal 508 and the fixed terminal 510 are provided between the upper case 504 and the lower case 506. The movable terminal 508 is in contact with the fixed terminal 510 from below. However, when a probe (not shown) is inserted through a hole provided in the upper case 504, the movable terminal 508 is pushed downward by the probe. Thereby, the movable terminal 508 and the fixed terminal 510 are separated.

  By the way, in the coaxial connector 500 described in Patent Document 1, it is difficult to achieve both improvement in durability of the movable terminal 508 and downsizing of the coaxial connector 500. More specifically, the movable terminal 508 is elastically deformed by being pushed by the probe and moves away from the fixed terminal 510. In order to improve the durability of the movable terminal 508, it is preferable to increase the amount by which the movable terminal 508 can be displaced by elastic deformation. Therefore, the length of the movable terminal 508 is preferably long. However, when the movable terminal 508 becomes longer, the coaxial connector 500 becomes larger.

Japanese Patent No. 44442719

  Accordingly, an object of the present invention is to provide a coaxial connector capable of improving the durability of the movable terminal and reducing the size of the coaxial connector.

  A coaxial connector according to an aspect of the present invention includes a main body having a top surface, a bottom surface, and a side surface, and a hole into which a rod-like probe is inserted from above. A fixed terminal that is fixed, a drawer portion provided on the side surface portion, a bending portion that is bent toward the main body with respect to the drawer portion, and a fixed portion that is fixed to the main body, and the drawer portion And a movable terminal including a leaf spring portion that extends toward the fixed terminal and is in contact with the fixed terminal from below, and the main body includes a lower case, And an upper case overlaid on the lower case, and the fixing portion is fixed to the main body by being sandwiched between the upper case and the lower case, and the fixing portion and the leaf spring portion Are connected only through the drawer portion provided on the side surface portion, and are not connected on the surface of the lower case facing the upper case, and the leaf spring portion is lowered by the probe. It is characterized by being separated from the fixed terminal by being pushed to the side.

  According to the present invention, it is possible to improve the durability of the movable terminal and reduce the size of the coaxial connector.

1 is an external perspective view of a coaxial connector according to an embodiment of the present invention. 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 a coaxial connector. It is a disassembled perspective view of a coaxial connector. 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. It is a cross-sectional structure figure in xz plane of a coaxial connector when the other party coaxial connector is not mounted | worn. It is a cross-sectional structure figure in xz plane of a coaxial connector when the other party coaxial connector is mounted | worn. 10 is an exploded perspective view of a coaxial connector described in Patent Document 1. FIG.

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

  1 and 2 are external perspective views of a coaxial connector 10 according to an embodiment of the present invention. 3 and 4 are exploded perspective views of the coaxial connector 10. 1 to 4, 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. Further, the direction in which the movable terminal 20 and the fixed terminal 22 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 positive direction in the x-axis direction is a direction from the movable terminal 20 toward the fixed terminal 22.

  As shown in FIGS. 1 to 4, the coaxial connector 10 includes a main body 12, an external terminal 14, a movable terminal 20, and a fixed terminal 22, and has a size of 1.2 mm × 1.4 mm × 0.65 mm. Yes. As shown in FIG. 2, the main body 12 has a shape in which a cylinder is attached to a rectangular flat plate, and has a top surface portion, a bottom surface portion, and a side surface portion. The upper surface portion is a surface on the positive direction side in the z-axis direction of the cylindrical portion and the flat plate portion of the main body 12. The bottom surface portion is a surface on the negative direction side in the z-axis direction of the flat plate portion of the main body 12. The side portions are surfaces located on both sides in the x-axis direction and both sides in the y-axis direction of the flat plate portion of the main body 12. The main body 12 includes an upper case 16 and a lower case 18.

  As shown in FIG. 3, the lower case 18 has a rectangular shape and constitutes a flat plate portion of the main body 12. The lower case 18 includes a base portion 60 and fixing portions 57a, 57b, and 58. The base portion 60 is a plate-like member that has a rectangular shape when viewed in plan from the z-axis direction. At the center of each of the two sides extending in the y-axis direction of the base portion 60, rectangular cutout portions 54 and 55 for the movable terminal 20 and the fixed terminal 22 to be pulled out are formed. .

  The fixing portions 57 a and 57 b are provided on the main surface of the base portion 60 on the positive side in the z-axis direction, and are flat surfaces for fixing the movable terminal 20. The fixing portion 57a is provided in the vicinity of the end portion on the positive direction side in the y-axis direction of the side on the negative direction side in the x-axis direction of the base portion 60. The fixing portion 57b is provided in the vicinity of the end portion on the negative direction side in the y-axis direction of the side on the negative direction side in the x-axis direction of the base portion 60.

  The fixing portion 58 is provided on the main surface of the base portion 60 on the positive direction side in the z-axis direction, and is a plane for fixing the fixing terminal 22. The fixing portion 58 is provided in the vicinity of the center in the y-axis direction of the side on the positive direction side in the x-axis direction of the base portion 60. That is, the fixing portion 58 is provided on the negative direction side in the x-axis direction with respect to the notch portion 55.

  As shown in FIG. 4, the upper case 16 has a cylindrical shape, and constitutes a part of the flat plate portion and the cylindrical portion of the main body 12. The upper case 16 includes a cylindrical portion 34 and fixed portions 37a, 37b, 39. The cylindrical portion 34 is a cylindrical member that extends in the z-axis direction. The cylindrical portion 34 has a mortar-like opening on the positive side in the z-axis direction. The cylindrical portion 34 is provided with a hole 34a having a circular cross section in the xy plane. Thereby, the hole 34 a is provided in the upper surface portion of the main body 12. 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.

  The fixed portions 37 a and 37 b are provided on the end portion of the cylindrical portion 34 on the negative direction side in the z-axis direction, and are flat surfaces for fixing the movable terminal 20. The fixing portion 37a is provided at a position facing the fixing portion 57a. Thereby, the fixing | fixed part 37a fixes the movable terminal 20 on both sides with the fixing | fixed part 57a, when the coaxial connector 10 is assembled. The fixing portion 37b is provided at a position facing the fixing portion 57b. Thereby, when the coaxial connector 10 is assembled, the fixed portion 37b fixes the movable terminal 20 with the fixed portion 57b.

  The fixing portion 39 is provided at the end of the cylindrical portion 34 on the negative direction side in the z-axis direction, and is a plane for fixing the fixing terminal 22. The fixing part 39 is provided at a position facing the fixing part 58. Thereby, the fixing | fixed part 39 is fixed on both sides of the fixing terminal 22 with the fixing | fixed part 58, when the coaxial connector 10 is assembled.

  Next, the movable terminal 20 and the fixed terminal 22 will be described with reference to FIGS. 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 lower case 18. FIG. 6 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. As shown in FIGS. 3 and 4, the fixed terminal 22 includes a fixed portion 48, a lead portion (drawer portion) 49, and contact portions 50a and 50b. It is configured. The fixing portion 48 is a flat portion that is fixed to the main body 12 by being sandwiched between the fixing portion 39 and the fixing portion 58 when the coaxial connector 10 is assembled. The lead portion 49 is formed to be bent toward the negative direction side in the z-axis direction with respect to the fixed portion 48, and is provided on the side surface portion on the positive direction side in the x-axis direction of the main body 12. Furthermore, the tip of the lead portion 49 is bent toward the positive direction side in the x-axis direction. Thereby, as shown in FIGS. 1 and 5, the lead portion 49 is exposed to the outside of the main body 12 from the notch portion 55 when the coaxial connector 10 is assembled.

  As shown in FIGS. 5 and 6, the contact portions 50 a and 50 b protrude from the fixed portion 48 toward the positive side and the negative direction side in the y-axis direction, and are in the z-axis direction with respect to the fixed portion 48. It is formed by bending in the positive direction side. The contact portions 50a and 50b are in contact with the movable terminal 20 at a portion facing the negative direction side in the z-axis direction. 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.

  The movable terminal 20 is formed by punching a metal plate having a spring property into a predetermined shape and bending it. As shown in FIGS. 3 and 4, the fixed portions 42 a and 42 b and the lead portions (drawer portions) 43. And a leaf spring portion 44. The lead portion 43 is provided on the side surface portion of the main body 12 on the negative direction side in the x-axis direction. The tip of the lead part 43 is bent toward the negative direction side in the x-axis direction. Thereby, as shown in FIGS. 1 and 5, the lead portion 43 is exposed from the notch portion 54 to the outside of the main body 12 when the coaxial connector 10 is assembled.

  The fixing portion 42 a is bent along the x-axis direction (horizontal direction) toward the main body 12 by being bent toward the positive side in the x-axis direction with respect to the lead portion 43. The fixing portion 42a is a flat portion that is fixed to the main body 12 by being sandwiched between the fixing portion 37a and the fixing surface 57a when the coaxial connector 10 is assembled.

  The fixing portion 42 b is bent along the x-axis direction (horizontal direction) toward the main body 12 by being bent toward the positive side in the x-axis direction with respect to the lead portion 43. The fixing portion 42b is a flat portion that is fixed to the main body 12 by being sandwiched between the fixing portion 37b and the fixing surface 57b when the coaxial connector 10 is assembled.

  As shown in FIG. 3, the leaf spring portion 44 is bent from the lead portion 43 to the fixed terminal 22 between the upper case 16 and the lower case 18 by being bent toward the positive side in the x-axis direction with respect to the lead portion 43. It extends linearly along the x-axis direction (horizontal direction). The leaf spring portion 44 is in contact with the fixed terminal 22 from the negative direction side in the z-axis direction, and more specifically, is in contact with the contact portions 50a and 50b of the fixed terminal 22. Further, the tips ta and tb of the leaf spring portion 44 are in contact with the lower case 18 and can slide on the lower case 18. More specifically, the leaf spring portion 44 includes branch portions 44a and 44b that are formed to be branched 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. It spreads in the y-axis direction as it goes to the positive direction side. Further, the leaf spring portion 44 is curved so as to protrude to the positive side in the z-axis direction over the entire area from the ends ta and tb to the connection portion with the lead portion 43. 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.

  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 surface part of the main body 12 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. Furthermore, 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. 6, 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. 6, the leg portions 33a and 33b are bent, but actually, the leg portions 33a and 33b are not bent at this stage.

  Next, as shown in FIG. 6, the external terminal 14 is attached to the upper case 16 from the positive side in the z-axis direction. At this time, the cylindrical portion 34 is inserted into the cylindrical portion 32. Thereafter, as shown in FIG. 4, the lower case 18 is stacked on the upper case 16 from the negative direction side in the z-axis direction.

  Finally, the leg portions 33a and 33b of the external terminal 14 are caulked to obtain the coaxial connector 10 having the structure as shown in FIGS.

  Next, the operation of the coaxial connector 10 will be described with reference to FIGS. FIG. 7 is a cross-sectional structure diagram in the xz plane of the coaxial connector 10 when the counterpart coaxial connector is not attached. FIG. 8 is a cross-sectional structure diagram in the xz plane of the coaxial connector 10 when the counterpart coaxial connector is attached.

  As shown in FIG. 7, 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 direction side in the z-axis direction. Accordingly, the branch portions 44a and 44b (only the branch portion 44b is shown in FIG. 7) are pressed against the contact portions 50a and 50b (only the contact portion 50b is shown in FIG. 7) by the urging force of the leaf spring portion 44. The movable terminal 20 and the fixed terminal 22 are electrically connected.

  On the other hand, when the counterpart coaxial connector is mounted, the rod-shaped probe 130 of the counterpart coaxial connector is inserted from the positive direction side in the z-axis direction to the negative direction 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. At this time, the leaf spring portion 44 extends linearly as shown in FIG. Then, the tips ta and tb of the leaf spring portion 44 move to the positive direction side in the x-axis direction while sliding on the lower case 18. Thereby, the branch portions 44a and 44b (only the branch portion 44b is shown in FIG. 8) of the leaf spring portion 44 are separated from the contact portions 50a and 50b (only the contact portion 50b is shown in FIG. 8). As a result, the electrical connection between the movable terminal 20 and the fixed terminal 22 is cut, while the probe 130 and the movable terminal 20 are electrically connected. At the same time, 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.

  Further, when the counterpart coaxial connector is removed from the coaxial connector 10, the central portion in the x-axis direction of the leaf spring portion 44 moves to the positive direction side in the z-axis direction as shown in FIG. As a result, the movable terminal 20 and the fixed terminal 22 are electrically connected again, while the electrical connection between the probe 130 and the movable terminal 20 is broken.

  According to the coaxial connector 10 configured as described above, the durability of the movable terminal 20 can be improved and the coaxial connector 10 can be downsized. More specifically, the fixing portions 42 a and 42 b are configured to be bent toward the positive side in the x-axis direction with respect to the lead portion 43 provided on the side surface portion of the main body 12. The movable terminal 20 is fixed to the main body 12 by fixing the fixed portions 42 a and 42 b between the upper case 16 and the lower case 18. That is, in the coaxial connector 10, unlike the coaxial connector 500 described in Patent Document 1, the fixing portions 42 a and 42 b are not provided between the lead portion 43 and the leaf spring portion 44. Thereby, in the coaxial connector 10, compared with the coaxial connector 500, the length of the coaxial connector 10 in the x-axis direction can be shortened.

  Further, the leaf spring portion 44 is configured to be bent toward the fixed terminal 22 with respect to the lead portion 43 provided on the side surface portion of the main body 12. As a result, the entire portion of the movable terminal 20 disposed on the lower case 18 can be the leaf spring portion 44. As described above, the length of the leaf spring portion 44 can be increased, and the durability of the movable terminal 20 can be improved.

  Moreover, according to the coaxial connector 10, the coaxial connector 10 can be reduced in height. More specifically, the fixing portions 42a and 42b extend along the x-axis direction by being bent toward the positive direction side in the x-axis direction with respect to the lead portion 43. Therefore, the coaxial connector 10 can be reduced in height as compared with the coaxial connector in which the fixing portion is not bent with respect to the lead portion.

  Moreover, in the coaxial connector 10, as shown in FIG. 5, 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 | plate spring part 44 which has suitable elastic force. Further, since the distance between the tips ta and tb of the branch portions 44a and 44b and the fixed terminal 22 is sufficiently secured, the contact between the tips ta and tb and the fixed terminal 22 is prevented, and the movable terminal 20 and the fixed terminal 22 are prevented. And sufficient isolation is ensured.

(Other embodiments)
The coaxial connector according to the present invention is not limited to the coaxial connector 10 and can be changed within the scope of the gist thereof. In the coaxial connector 10, the two fixing portions 42a and 42b are provided, but the number of the fixing portions may be one.

  The present invention is useful for a coaxial connector, and is particularly excellent in that the durability of the movable terminal can be improved and the coaxial connector can be miniaturized.

ta, tb tip 10 coaxial connector 12 main body 14 external terminal 16 upper case 18 lower case 20 movable terminal 22 fixed terminal 42a, 42b, 48, 57a, 57b, 58 fixed portion 43, 49 lead portion 44 leaf spring portion 44a, 44b branch Part 60 base part 50a, 50b contact part 130 probe

Claims (4)

A main body having a top surface portion, a bottom surface portion and a side surface portion, and a hole into which a rod-shaped probe is inserted from above is provided in the top surface portion;
A fixed terminal fixed to the body;
The drawer portion provided on the side surface portion, the lead portion being bent toward the main body, the fixing portion fixed to the main body, and the fixed terminal being bent with respect to the lead portion And a movable terminal including a leaf spring portion that extends toward the fixed terminal and is in contact with the fixed terminal from below.
With
The main body includes a lower case and an upper case stacked on the lower case,
The fixing portion is fixed to the main body by being sandwiched between the upper case and the lower case,
The fixed portion and the leaf spring portion are connected only through the drawer portion provided in the side surface portion, and are not connected on the surface of the lower case facing the upper case,
The leaf spring part is separated from the fixed terminal by being pushed downward by the probe;
Coaxial connector characterized by The leaf spring portion extends toward the fixed terminal between the upper case and the lower case, and is curved so as to protrude upward.
The tip of the leaf spring portion is in contact with the lower case, and the leaf spring portion is slid on the lower case by being pushed downward by the probe;
The coaxial connector according to claim 1. The fixing portion is not provided between the drawer portion and the leaf spring portion, and is defined by a first plane of the upper case and a second plane of the lower case facing the first plane. Being pinched,
The coaxial connector according to claim 2. The leaf spring portion is branched so that the fixed terminal is located therebetween, and has a plurality of branch portions that are in contact with the fixed terminal from below, and from the tip of the leaf spring portion It is curved so that the central portion swells over the entire area up to the connection portion with the drawer portion,
The coaxial connector according to claim 2.

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