JP2017041347A - Mounting structure for connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure for a connector capable of mounting the connector in a movable manner along a plane of a printed wiring board in a simple structure where a movable portion is not provided in a part of the connector.SOLUTION: Around an external terminal and a center terminal of a connector, a relative movement cavity is formed which makes the external terminal and the center terminal freely relatively movable within a predetermined movement range along a plane of a printed wiring board, and a first conductive connection body which electrically connects the external terminal and an external contact at all the time even at any position of the relative movement and a second conductive connection body which electrically connects the center terminal and a center contact at all the time are disposed. The connector is made movable relatively to the printed wiring board on which the connector is mounted as a whole, without providing a movable portion in a part of the connector.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a connector mounting structure for mounting a connector on a printed wiring board, and more particularly to a connector mounting structure for mounting a connector having an external contact and a center contact movably along a plane of the printed wiring board.

  If a connector attached to a printed wiring board or housing has a connector mounting error or assembly error, it will be misaligned with the mating connector or misaligned with the through-hole of the housing. There is a problem that the connection part of the connector cannot be protruded from the through hole, and the conventional connector has a certain range of connectors with respect to the fixed side printed wiring board and housing in order to absorb these mounting errors and assembly errors. A so-called floating structure that is movably attached to the vehicle is adopted.

  FIG. 6 shows a floating structure described in Patent Document 1 in which the connector 100 penetrating the through hole 101 a of the housing 101 is movable along the housing 101 in accordance with the mating connector 200. The connector 100 is a coaxial connector in which a cylindrical external contact 104 is coaxially attached to the periphery of a center contact 102 via an insulator 103, and when the mating connector 200 is fitted and connected from the right side in the drawing, The center pin 201 and the external conductor 202 of the mating connector 200 are electrically connected to the center contact 102 and the external contact 104, respectively.

  A flange portion 105 disposed along the surface of the housing 101 is integrally formed around the connector 100, and a fixing screw 107 through which the long hole 106 of the flange portion 105 is inserted is screwed to the housing 101. The connector 100 is attached to the housing 101. The inner diameter of the long hole 106 of the flange portion 105 is longer than the outer diameter of the shaft portion 107 a of the fixing screw 107, and therefore the connector 100 is in the range of movement in which the shaft portion 107 a relatively moves within the long hole 106. The through hole 101a of the housing 101 is also large enough to insert the connector 100, so that the entire connector 100 matches the mating connection position of the mating connector 200. To the housing 101.

  FIG. 7 shows the coaxial connector 110 described in Patent Document 2 having another floating structure in which a part of the casing 111 is movable along the plane of the casing 111. Even if there is a gap for moving the cylindrical movable shell 112 in the through-hole 111a of the casing 111 through which the coaxial connector 110 penetrates while the cylindrical movable shell 112 moves relative to the body 111, the inside of the casing 111 is kept secret. Waterproof structure is provided.

  The coaxial connector 110 includes a cylindrical outer shell 113 that is fixedly attached to the casing 111, a cylindrical movable shell 112 that is movably attached to the cylindrical outer shell 113, and a cylindrical movable shell 112. A central contact 115 is provided along the central axis via an insulator 114. Therefore, even if there is a position shift with the mating connector 210 attached to another device, the cylindrical movable shell 112 fitted and connected to the mating connector 210 moves in a direction shifted with respect to the casing 111. The cylindrical movable shell 112 and the center contact 115 are fitted and connected to the mating connector 210.

  Since the waterproof rings 116 and 117 are arranged in a compressed state between the periphery of the through-hole 111a of the casing 111 and the cylindrical outer shell 113 and the cylindrical movable shell 112 that moves relative to the cylindrical outer shell 113, respectively. The inside of the housing 111 on the left side in the drawing is kept in an airtight state that is blocked from the outside.

Japanese Patent No. 3541319 JP 2014-137913 A

  The connectors 100 and 110 having the conventional floating structure described above are movably attached to the casings 101 and 111 in order to absorb the displacement of the connection position with the mating connectors 200 and 210. In order to absorb mounting errors between the casings 101 and 111 and the printed wiring board even when the connectors 100 and 110 are board connectors mounted on the printed wiring board mounted in the casings 101 and 111, Similarly, it is necessary to move the connectors 100 and 110 with respect to the housings 101 and 111, and it is necessary to provide gaps that allow the connectors 100 and 110 to move in the through holes 101a and 111a that penetrate the connectors 100 and 110. .

  Therefore, a sufficiently large gap is formed between the through-holes 101a and 111a and the connectors 100 and 110. In the connector 100 described in Patent Document 1, the inside of the housing 101 is made airtight to have a waterproof structure. Can not.

  Further, the floating structure of the connector 100 moves the connector 100 through the gap between the shaft portion 107a of the fixing screw 107 and the long hole 106 of the flange portion 105. Therefore, the floating structure of the connector 100 is only in the direction along the longitudinal direction of the long hole 106. The connector 100 cannot be moved. Although it is possible to move the long hole 106 as a circular hole in all directions along the plane of the housing 101, the inner diameter of the circular hole cannot be made longer than the outer diameter of the head 107b of the fixing screw 107. If the movement range is limited and the mounting error or mounting error is large, the error cannot be absorbed.

  On the other hand, according to the connector 110 described in Patent Document 2, even if there is a gap between the through hole 111a of the casing 111 and the cylindrical movable shell 112, the cylindrical outer shell that is fixed in close contact with the casing 111. Since the cylindrical movable shell 112 is movably attached via 113, the inside of the casing 111 can be made waterproof, but at least between the casing 111 and the cylindrical outer shell 113 and the cylindrical outer shell. It is necessary to closely arrange the waterproof rings at two places between the 113 and the cylindrical movable shell 112, and the waterproof structure becomes complicated.

  Further, the connector 110 itself needs to be composed of at least two parts, a cylindrical movable shell 112 and a cylindrical outer shell 113, and the cylindrical outer shell 113 is sandwiched between the two cylindrical movable shells 112, Since the cylindrical movable shell 112 is movably attached to the cylindrical outer shell 113, the number of parts is increased and the structure thereof is complicated.

  The present invention has been made in consideration of such conventional problems, and has a simple structure in which no movable part is provided in a part of the connector, and the connector is mounted so as to be movable along the plane of the printed wiring board. An object of the present invention is to provide a connector mounting structure that can be used.

  It is another object of the present invention to provide a connector mounting structure in which a connector mounted on a printed wiring board attached in the housing can be moved with respect to the housing.

  In addition, the window hole of the housing that faces the connector for connection with the mating connector has an inner diameter substantially equal to the outer diameter of the connector that is movable with respect to the housing, so that no gap is generated between the window hole and the connector. An object is to provide a connector mounting structure.

In order to achieve the above object, the connector mounting structure according to claim 1 includes an external contact that is fitted and connected to the mating connector and contacts the external connection portion of the mating connector, and a central connection portion of the mating connector. A central contact that contacts the external contact, a connector having an external contact and an insulator that insulates and supports the central contact, an external terminal that is electrically connected to the external contact, and a central terminal that is electrically connected to the central contact. And a center terminal are soldered to the corresponding conductive patterns of the printed wiring board, respectively, and a connector mounting structure for mounting the connector on the printed wiring board,
A relative movement gap is formed around the external terminal and the center terminal of the connector so that the external terminal and the center terminal can move relative to each other within a predetermined movement range along the plane of the printed wiring board. The first conductive connection body that is always electrically connected to the external contact during relative movement is disposed between the external terminal and the external contact, and the center contact is always electrically connected while the center terminal is relatively moved within the moving range. A second conductive connector to be connected is disposed between the center terminal and the center contact, and the connector is connected to the printed circuit board in a state where the external contact and the center contact are electrically connected to the corresponding conductive pattern of the printed circuit board, respectively. It is mounted on a printed wiring board so as to be movable within the moving range along a plane.

  Around the external terminal and the center terminal of the connector, a relative movement gap that allows the external terminal and the center terminal to move relative to each other within a predetermined movement range along the plane of the printed wiring board is formed. Relative movement is possible within a predetermined movement range along the plane of the printed wiring board without interfering with the external terminals and the center terminals that are solder-connected to the corresponding conductive patterns of the wiring board. Even if the connector is in any position relative to the printed circuit board, the external terminal and the external contact are electrically connected by the first conductive connection body, and the center terminal and the central contact are electrically connected by the second conductive connection body. The connector is movably mounted on the printed wiring board in a state of being electrically connected to the conductive pattern of the printed wiring board.

The connector mounting structure according to claim 2, wherein the connector is a coaxial connector in which an external contact is coaxially disposed around an axis of a center contact via an insulator.
The printed wiring board faces the window hole of the housing fixed integrally, and is fitted and connected to the mating connector.

  Since it can be moved relative to the printed circuit board without changing the shape or structure of the connector, the characteristic impedance of the coaxial connector does not change.

  Since the connector can be mounted movably along the plane of the printed wiring board, even if the printed wiring board is fixed to the housing, the connector can be moved according to the position of the window hole in the housing You can face the hole.

  The connector mounting structure according to claim 3 is characterized in that the elastic waterproof ring is disposed in close contact between the inner wall of the window hole and the external contact.

  Since it is not necessary to form a gap for moving the connector between the connector and the inner wall of the window hole, the inside of the housing can be easily formed into an airtight structure by placing the elastic waterproof ring in close contact therewith.

  In the connector mounting structure according to claim 4, the relative movement gap formed around the external terminal is a through-hole penetrating up and down from the plane of the external contact to the bottom surface facing the printed wiring board. A shaft portion that passes through the through hole and relatively moves in the predetermined movement range within the through hole, and a flange portion that is connected to the shaft portion that protrudes upward from the through hole and has a larger diameter than the plane side opening of the through hole; The first conductive connection body is a conductive coil spring that is elastically mounted between the external contact and the shaft portion in the through hole and biases the collar portion toward the plane of the external contact.

  The flange of the external terminal is elastically contacted with the plane of the external contact by being biased by the coil spring, and the shaft of the external terminal penetrates the through hole so as to be relatively movable within the through hole. It is temporarily held by the connector in a state of facing.

  Since the conductive coil spring is elastically mounted between the external contact and the shaft portion of the external terminal, the external contact and the external terminal are always electrically connected regardless of the position where the shaft portion moves relatively in the through hole. Connecting.

  In the connector mounting structure according to claim 5, the coil spring is a truncated cone-shaped coil spring in which a coil is wound along the outer shape of the truncated cone, and the large-diameter portion at one end contacts the downward step portion of the external contact. The small-diameter portion at the other end is attached around the shaft portion and is elastically mounted between the external contact and the shaft portion.

  The frustum-shaped coil spring holds the shaft portion to which the small-diameter portion is attached at the center position of the coil spring, so that the shaft portion of the external terminal that penetrates the through hole so as to be relatively movable can receive a temporary external force. Return to a certain position with the external force removed.

  The connector mounting structure according to claim 6, wherein the relative movement gap formed around the external terminal is a first recess formed in an external contact opening on a plane side of the printed wiring board, and the first conductive connection The body is a coil spring that is elastically mounted between the external contact and the external terminal in the first recess, and biases the external terminal toward the inner top surface of the first recess of the external contact.

  The external terminal is urged by the coil spring to elastically contact the inner top surface of the first recess of the external contact, the external terminal is accommodated in the first recess so as to be relatively movable, and the lower end thereof faces the printed wiring board Is temporarily held by the connector.

  Since the conductive coil spring is elastically mounted between the external contact and the external terminal, the external contact and the external terminal are always electrically connected regardless of the position at which the external terminal is relatively moved in the first recess. .

  In the connector mounting structure according to claim 7, the coil spring is a truncated cone-shaped coil spring in which the coil is wound along the outer shape of the truncated cone, and the large diameter portion at one end is contacted with the upward stepped portion of the external contact. The small-diameter portion at the other end is attached around the external terminal and is mounted between the external contact and the external terminal.

  The frustoconical coil spring holds the external terminal to which the small-diameter portion is attached at the center position of the coil spring, so even if the external terminal accommodated in the first recess is relatively movable, It returns to a certain position with the external force removed.

In the connector mounting structure according to claim 8, the relative movement gap formed around the center terminal is a second recess formed in the center contact that opens to the plane side of the printed wiring board,
The second conductive connector is a conductive coil spring that is elastically mounted between the center contact and the center terminal in the second recess and biases the center terminal toward the inner top surface of the second recess of the center contact. Features.

  The center terminal is urged by the coil spring to elastically contact the inner top surface of the second recess of the center contact, the center terminal is accommodated in the second recess so as to be relatively movable, and the lower end thereof faces the printed wiring board Is temporarily held by the connector.

  Since the conductive coil spring is elastically mounted between the center contact and the center terminal, the center contact and the center terminal are always electrically connected regardless of the position at which the center terminal is relatively moved in the second recess. .

  In the connector mounting structure according to claim 9, the coil spring is a truncated cone-shaped coil spring in which a coil is wound along the outer shape of the truncated cone, and the large diameter portion at one end is contacted with the upward stepped portion of the center contact. The small-diameter portion at the other end is attached around the center terminal, and is mounted between the center contact and the center terminal.

  The frustoconical coil spring holds the center terminal to which the small-diameter portion is attached at the center position of the coil spring, so that even if the center terminal received in the second recess is relatively movable, It returns to a certain position with the external force removed.

  According to the first aspect of the present invention, the connector can be mounted movably along the plane of the printed wiring board without providing a complicated structure in which a movable part is provided in a part of the connector.

  Moreover, since there is no restriction | limiting in the magnitude | size and shape of a relative movement space | gap, the movement range and movement direction which a connector moves with respect to a printed wiring board are not restrict | limited.

  According to the second aspect of the present invention, since the connector does not have a complicated structure so as to be movable with respect to the printed wiring board, the characteristic impedance of the coaxial connector does not change and the high-frequency signal flowing through the center contact is not attenuated.

  The connector can be moved to the window hole according to the position of the window hole of the housing, so that a large gap is not formed between the window hole and the connector, and the connector can be exposed to the window hole. it can.

  According to the invention of claim 3, even if the connector is movable with respect to the housing, the elastic waterproof ring is disposed in close contact between the housing and the inner wall of the window hole, and the inside of the housing is easily waterproofed. Can do.

  According to the fourth aspect of the present invention, the external terminal that moves relative to the connector and is always electrically connected to the external contact during the relative movement is temporarily held by the connector with its shaft portion facing the printed wiring board. Therefore, the process of soldering the shaft portion to the corresponding conductive pattern of the printed wiring board is facilitated.

  In addition, by soldering the shaft portion of the external terminal to the corresponding conductive pattern of the printed wiring board, the connector can be moved within a predetermined moving range along the plane of the printed wiring board, It can position between terminal collars.

  According to the invention of claim 5, since the shaft portion of the external terminal temporarily held by the connector faces the printed wiring board at a fixed position in the through hole, it is opposed to the corresponding conductive pattern of the printed wiring board with high accuracy. Can be soldered.

  According to the sixth aspect of the present invention, the external terminal that moves relative to the connector and is always electrically connected to the external contact during the relative movement can be temporarily held by the connector in a state of facing the printed wiring board. The process of soldering the terminals to the corresponding conductive pattern on the printed wiring board is facilitated.

  Also, by soldering the external terminals to the corresponding conductive pattern of the printed wiring board, the external contacts of the connector are urged in the direction of the pudding wiring board by a coil spring that is elastically mounted between the external terminals and the connector. Can be positioned on the plane of the printed wiring board so as to be movable within a predetermined movement range along the plane of the printed wiring board.

  According to the seventh aspect of the present invention, since the lower end of the external terminal temporarily held by the connector faces the printed wiring board at a fixed position in the first recess, it faces the corresponding conductive pattern of the printed wiring board with high accuracy. And can be soldered.

  According to the invention of claim 8, since the center terminal that moves relative to the connector and is always electrically connected to the center contact during the relative movement can be temporarily held in the connector in a state of facing the printed wiring board, The process of soldering the terminals to the corresponding conductive pattern on the printed wiring board is facilitated.

  Also, by soldering the center terminal to the corresponding conductive pattern on the printed circuit board, the center contact of the connector is urged in the direction of the printed circuit board by a coil spring elastically mounted between the center terminal and the connector. Can be positioned on the plane of the printed wiring board so as to be movable within a predetermined movement range along the plane of the printed wiring board.

  According to the ninth aspect of the present invention, the center terminal temporarily held by the connector has its lower end facing the printed wiring board at a fixed position in the first recess, and thus faces the corresponding conductive pattern of the printed wiring board with high accuracy. And can be soldered.

1 is a longitudinal sectional view of a connector mounting structure 1 according to an embodiment of the present invention. 1 is an exploded perspective view of a connector mounting structure 1. FIG. 1 is a longitudinal sectional view of a connector mounting structure 1 showing a state of being mounted on a printed wiring board 30. FIG. 2 is a longitudinal sectional view of a connector mounting structure 1 showing a state in which a coaxial connector 10 is inserted into a window hole 31a of a housing 31. FIG. It is a longitudinal cross-sectional view of the connector mounting structure 20 according to another embodiment of the present invention. It is a fragmentary sectional view which shows the floating structure of the conventional connector 100. It is a longitudinal cross-sectional view which shows the floating structure of the other conventional connector 110. FIG.

  A connector mounting structure 1 according to an embodiment of the present invention will be described below with reference to FIGS. In this specification, the mounting direction for mounting the connector 10 on the printed wiring board 30 is downward (downward in FIG. 1), and the connection direction of the connector 10 with a mating connector (not shown) is upward (upward in FIG. 1). Each part of the mounting structure 1 will be described.

  The connector mounting structure 1 includes a male coaxial connector 10 in which an external contact 4 is integrally attached around an axis of a center contact 2 via an insulator 3, and the center contact 2 to a corresponding conductive pattern on a printed wiring board 30. A central terminal 5 to be electrically connected and two external terminals 6 and 6 to electrically connect the external contact 4 to the corresponding conductive pattern of the printed wiring board 30 at two positions are provided.

  The center contact 2 is formed in the shape of a needle, and a center pin 7 that is in contact with and connected to the center connection portion of the mating connector, and a closed cylindrical center terminal that is integrally connected to the lower side of the center pin 7 and opens downward. The center pin 7 is press-fitted from below into the center hole of the insulator 3 formed of a receiving portion 8 and made of insulating synthetic resin in a columnar shape, and is integrally assembled to the insulator 3.

  The external contact 4 is attached to the periphery of the insulator 3 at a certain distance from the center pin 7, and has a cylindrical outer shell 9 that fits and connects to the external connection portion of the mating connector, and from below the cylindrical external shell 9. A pair of flange portions 11 projecting on both sides of the center terminal receiving portion 8 with a certain insulating interval from the center terminal receiving portion 8 are integrally formed from a conductive metal material. The insulator 3 to which the center contact 2 is attached is press-fitted into the cylindrical outer shell 9 from below and is integrally assembled to the outer contact 4.

  Each of the pair of flange portions 11 is provided with a through-hole 12 penetrating vertically from the plane of the flange portion 11 to the bottom surface. As shown in FIG. 1, the inner diameter of each through hole 12 in the vicinity of the opening on the plane side is sufficiently longer than the outer diameter of the shaft portion 6 a of the external terminal 6 that penetrates the through hole 12. This is a relative movement gap that allows the terminal 6 to move in the horizontal direction parallel to the printed wiring board 30. The inner diameter of the through hole 12 in the vicinity of the opening on the plane side is smaller than the lower side thereof, so that the lower part receives the large diameter portion 13a of the external coil spring 13 to be described later in the vicinity of the opening on the plane side of the through hole 12. The step portion 14 is formed in a ring shape.

  The external terminals 6 penetrating the pair of through-holes 12 and 12 respectively hang downward from the disk-shaped flange 6b having a diameter longer than the inner diameter of the flat-side opening of the through-hole 12, and the center on the bottom surface side of the flange 6b. The provided shaft portion 6 a is integrally formed of a conductive metal material, and the flange portion 6 b is in contact with the flat surface of the flange portion 11 around the through hole 12 and is prevented from coming out downward. The length of the shaft portion 6 a is longer than the length of the flange portion 11 and the thickness of the printed wiring board 30, and the lower end of the shaft portion 6 a is the back surface of the printed wiring board 30 with the coaxial connector 10 disposed on the printed wiring board 30. It protrudes to the side and is solder-connected to a conductor pattern wired along the back surface.

  A conductive spring bearing ring 15 is fixed at a position near the middle of the shaft portion 6a, and the small-diameter portion 13b of the external coil spring 13 is arranged to be compressed between the downward stepped portion 14 in the through hole 12. Is supported from below. The external coil spring 13 is a truncated cone coil spring in which a conductive coil is wound along the outer shape of the truncated cone, and is fixed to a part of the downward step 14 of the external contact 4 and the external terminal 6 below it. Since the external terminal 6 is not fixed to the printed wiring board 30 before being mounted (see FIG. 1), the flange portion 6b is in elastic contact with the plane of the flange portion 11 by being elastically mounted between the spring receiving rings 15 thus formed. After mounting the external terminals 6 to be temporarily held on the coaxial connector 10 side and fixed to the printed wiring board 30 (see FIGS. 3 and 4), the plane of the flange portion 11 is The coaxial connector 10 is positioned along the bottom surface of the flange portion 6b by acting in elastic contact with the bottom surface of the portion 6b.

  The external terminal 6 has an external coil spring 13 formed in a truncated cone shape, and its small diameter portion 13b is received on the shaft portion 6a side of the external terminal 6. Therefore, even if a temporary external force is applied to the external terminal 6, When the external force is released, the shaft portion 6a returns to a position along the central axis of the through-hole 12 that is the center of the large-diameter portion 13a due to the elasticity of the external coil pulling 13. That is, the external terminal 6 is supported in the through hole 12 so as to be relatively movable in parallel with the plane of the printed wiring board 30, but in a state of being temporarily held on the coaxial connector 10 side before mounting, the shaft portion 6 a. Is held at a fixed position along the central axis of the through-hole 12, and there is no positional deviation with the corresponding conductive pattern of the printed wiring board 30, so that they can be accurately soldered together.

  Further, while the shaft portion 6a of the external terminal 6 is relatively moved in the through hole 12, the external terminal 6 and the external contact 4 are always electrically connected via the external coil spring 13 that is compressed and disposed therebetween. Therefore, the conductive pattern corresponding to the external contact 4 and the printed wiring board 30 is electrically connected at any position where the coaxial connector 10 moves after the coaxial connector 10 is mounted on the printed wiring board 30.

  The upper part of the center terminal 5 standing in a rod shape is accommodated in the covered cylindrical center terminal receiving portion 8 of the center contact 2. The center terminal 5 is formed in a rod shape with a conductive metal material, and the lower shaft portion 5b is below the coaxial connector 10 with the upper head portion 5a contacting the inner top surface of the center terminal receiving portion 8. It has a length that penetrates the printed wiring board 30 to be disposed and protrudes to the back side thereof. As a result, the lower end of the center terminal 5 protrudes to the back side of the printed wiring board 30 in a state where the coaxial connector 10 is disposed on the printed wiring board 30 and is solder-connected to a conductor pattern wired along the back side.

  The outer diameter of the head portion 5a of the center terminal 5 is slightly longer than the shaft portion 5b below it, and receives the small diameter portion 17b of the center side coil spring 17 described later on the lower surface of the head portion 5a. Further, as shown in FIG. 1, since the inner diameter of the inner top surface of the center terminal receiving portion 8 is sufficiently longer than the outer diameter of the head 5a, the center terminal 5 is connected to the center terminal 5 by printed wiring. A relative movement gap 8 ′ is provided that is relatively movable in the horizontal direction parallel to the substrate 30.

  In the center terminal receiving portion 8, similarly to the external side coil spring 13, a central side coil spring 17 having a truncated cone shape obtained by winding a coil along the outer shape of the truncated cone is opposite to the coil spring 13. Is arranged. The center side coil spring 17 is formed by attaching a washer 18 made of a conductive metal plate to the lower surface of the head portion 5 a along the lower end of the inner wall surface of the center terminal receiving portion 8. The small diameter portion 17b is compressed between the head portion 5a and the large diameter portion 17a is compressed between the upper step portion 18a.

  The center side coil spring 17 is elastically mounted between the lower surface of the head 5a of the center terminal 5 and the upward stepped portion 18a of the center terminal receiving portion 8 below the center terminal 5 so that the center terminal 5 is fixed to the printed wiring board 30. Before mounting (see FIG. 1), the head 5a acts so as to elastically contact the inner top surface of the center terminal receiving portion 8 to temporarily hold the center terminal 5 on the coaxial connector 10 side. After mounting fixed to the printed wiring board 30 (see FIGS. 3 and 4), the coaxial connector 10 is actuated to urge the center terminal receiving portion 8 toward the plane side of the printed wiring board 30. It is positioned along the plane.

  Further, since the center side coil pulling 17 is formed in a truncated cone shape and the small-diameter portion 17b is received on the head 5a side of the center terminal 5 in the center terminal 5, even if a temporary external force is applied to the center terminal 5, When the external force is released, the head 5a returns to a position along the center axis of the center terminal receiving portion 8 that is the center of the large diameter portion 17a by the elasticity of the center side coil pulling 17. That is, the center terminal 5 is supported in the center terminal receiving portion 8 so as to be relatively movable in parallel with the plane of the printed wiring board 30, but is temporarily held on the coaxial connector 10 side before mounting. The head portion 5a is held at a fixed position along the central axis of the center terminal receiving portion 8, and there is no positional deviation from the corresponding conductive pattern of the printed wiring board 30, so that they can be accurately connected to each other by soldering.

  Further, while the center terminal 8 relatively moves in the center terminal receiving portion 8, the center terminal 5 and the center contact 2 are always electrically connected via a center side coil spring 17 that is compressed and disposed therebetween. Therefore, the conductive pattern corresponding to the center contact 2 and the printed wiring board 30 is electrically connected at any position where the coaxial connector 10 moves after the coaxial connector 10 is mounted on the printed wiring board 30.

As shown in FIG. 4, the coaxial connector 10 is attached through a window hole 31 a formed in the housing 31. However, in order to make the inside of the housing 31 waterproof, the cylindrical external shell 9 is attached.
An O-ring 19 that is an elastic waterproof ring is attached around the inside of the cylindrical outer shell 9 in order to fill and seal the gap between the cylindrical outer shell 9 and the insulator 3 and the gap between the insulator 3 and the center pin 7. The top of the insulator 3 is filled with a waterproof adhesive layer 21.

  As shown in FIG. 2, the coaxial connector 10 configured in this manner press-fits the center pin 7 of the center contact 2 from below the insulator 3 until the plane of the center terminal receiving portion 8 comes into contact with the bottom surface of the insulator 3. The insulator 3 to which the center contact 2 is assembled is press-fitted from below the cylindrical outer shell 9 of the external contact 4 and assembled. Subsequently, the O-ring 19 is attached to the outside of the cylindrical outer shell 9 from above, and a waterproof adhesive is injected into the lower side where the plane of the insulator 3 in the cylindrical outer shell 9 is exposed and cured to be waterproof adhesive layer. 21, the coaxial connector 10 is manufactured in which the external contact 4 insulated by the insulator 3 is assembled around the axis of the center contact 2.

  The coaxial connector 10 temporarily holds the center terminal 5 and the two external terminals 6 before mounting on the printed wiring board 30. The center terminal 5 is inserted from below the center terminal receiving portion 8 together with the center side coil spring 17 in which the shaft portion 5b of the center terminal 5 is inserted between the lower surface of the head portion 5a and the washer 18, and the washer 18 is press-fitted. It attaches along the lower end of the inner wall surface of the center terminal receiving part 8 by methods, such as a fitting. Thereby, as described above, the center side coil spring 17 is elastically mounted between the lower surface of the head portion 5a of the center terminal 5 and the upward step portion 18a of the center terminal receiving portion 8, and the head portion 5a of the center terminal 5 is the center terminal. It is temporarily held on the coaxial connector 10 side in an elastic contact with the inner top surface of the receiving portion 8.

  In addition, the pair of external terminals 6 are external coils in which the shaft portion 6a passes through the through hole 12 from above and the truncated cone shape is reversed upside down with the flange portion 6b in contact with the flat surface of the flange portion 11. The spring 13 is accommodated in the through hole 12 while the shaft portion 6a of the external terminal 6 is inserted from below. After the large-diameter portion 13a of the external coil spring 13 abuts the downward stepped portion 14, the small-diameter portion 13b is further pushed upward, and the small-diameter portion 13b is above the bottom surface of the flange portion 11 and the external coil spring 13 is sufficiently compressed. At this position, the spring receiving ring 15 disposed below the small diameter portion 13b is attached around the shaft of the shaft portion 6a by a method such as welding or external fitting. Thus, as described above, the external coil spring 13 is elastically mounted between the downward stepped portion 14 of the flange portion 11 and the spring receiving ring 16 attached to the shaft portion 6a of the external terminal 6, and the external terminal 6 is The portion 6b is temporarily held on the coaxial connector 10 side in a state of being in elastic contact with the plane of the flange portion 11.

  The central terminal 5 and the external terminal 6 that are temporarily held by the coaxial connector 10 are attached to the small diameter portions 17a and 13b of the frustoconical center side coil spring 17 and the external side coil spring 13, whereby the large diameter portions 17a and 13a. The shaft portion 5b of the center terminal 5 and the shaft portion 6a of the external terminal 6 are fixed at the fixed position of the coaxial connector 10 although they are positioned at a fixed position that is the center and temporarily held so as to be relatively movable in the horizontal direction. It protrudes downward, and there is no position shift with the conductive pattern of the corresponding printed wiring board 30 (here, the through hole of the printed wiring board 30 communicating with the corresponding conductive pattern), and the solder connection can be performed accurately.

  There is a certain mounting error between the printed wiring board 30 on which the coaxial connector 10 is mounted and the casing 31 to which the printed wiring board 30 is mounted (in FIG. 3, the printed wiring board 30 is located on the right side of the drawing with respect to the casing 31). In this case, the coaxial connector 10 does not coincide with the window hole 31a of the housing 31. When an attachment error has occurred in this way, as shown in FIG. 4, the printed wiring board 30 is attached to the casing 31 while passing the coaxial connector 10 through the window hole 31 a, and the printed wiring board 30 is attached to the printed wiring board 30. By moving the coaxial connector 10 in the horizontal direction (in FIG. 4, the coaxial connector 10 is moved to the left with respect to the printed wiring board 30), the mounting error between the housing 31 and the printed wiring board 30 is absorbed. As described above, even if the coaxial connector 10 moves within a certain range of movement with respect to the printed wiring board 30, the center contact 2 passes through the center side coil spring 17 and the center terminal 5, and the external contact 4 Electrical connection is made to the corresponding conductive pattern via the coil spring 13 and the external terminal 6.

  According to the present invention, a gap for moving the coaxial connector 10 is formed in the window hole 31a of the casing 31 even if an attachment error occurs between the casing 31 and the printed wiring board 30 on which the coaxial connector 10 is mounted. Therefore, the O-ring 19 can be disposed in close contact between the cylindrical outer shell 9 and the window hole 31a, and the inside of the housing 31 can be surely made into a waterproof structure with a simple structure. .

  Further, even if the coaxial connector 10 is moved with respect to the printed wiring board 30, the shape of the coaxial connector 10 itself does not change, so the characteristic impedance of the coaxial connector 10 does not change, and the high-frequency signal flowing through the center contact 2 does not attenuate. .

  In the above-described first embodiment, the coaxial connector 10 is mounted on the printed wiring board 30 and the coaxial connector 10 has the flange portion 11 of the flange portion 6b of the external terminal 6 and the printed wiring board. The movement in the vertical direction is restricted by being sandwiched between 30 planes. However, the entire coaxial connector 10 is urged downward by the center side coil spring 17 and is urged upward by the external side coil spring 13 in the opposite direction. Therefore, if the former force exceeds the latter resultant force, printing is performed. If it abuts against the plane of the wiring board 30 and the latter resultant force exceeds the former force, it abuts on the lower surface of the flange 6b and is not positioned at a stable position in the vertical direction.

  Therefore, as shown in FIG. 5, in the coaxial connector mounting structure 20 according to the second embodiment, two external terminals are also temporarily connected to the simultaneous connector 10 in the same manner as the center terminal 5 according to the first embodiment. As a structure to be held, the vertical position of the coaxial connector 10 is stabilized with all the forces acting on the coaxial connector 10 in the state of being mounted on the printed wiring board 30 as a contact direction to the printed wiring board 30. Hereinafter, in the coaxial connector mounting structure 20 according to the second embodiment, the same or identical components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment, a pair of flange portions 11 projecting on both sides of the external contact 4 are provided with cylindrical recesses 22 that open downward, and the upper portions of the external terminals 26 stand up in the cylindrical recesses 22. To be accommodated. The external terminal 26 is formed of a conductive metal material in a rod shape, and the lower end is disposed below the coaxial connector 10 with the upper head portion 26a contacting the inner top surface of the cylindrical recess 22. The length penetrates through the wiring board 30 and protrudes to the back side thereof. As a result, the lower end of the external terminal 26 protrudes to the back side of the printed wiring board 30 with the coaxial connector 10 disposed on the printed wiring board 30 and is solder-connected to a corresponding conductor pattern wired along the back side. The

  The outer diameter of the head portion 26a of the external terminal 26 is slightly longer than the shaft portion 26b below the outer terminal 26, and the small diameter portion 23b of the external coil spring 23 is received by the lower surface of the head portion 26a. Further, as shown in FIG. 5, the inner diameter of the inner top surface of the cylindrical recess 22 is sufficiently longer than the outer diameter of the head portion 26 a, so that the cylindrical recess 22 has the external terminal 26 parallel to the printed wiring board 30. It is a relative movement gap that is relatively movable in the horizontal direction.

  In the cylindrical recess 22, as in the case of the center side coil spring 17, an external side coil spring 23 is arranged in which a coil is wound along the outer shape of the truncated cone to form a truncated cone shape. The external coil spring 23 includes a lower surface of the head 5a and an upward step 24a of the cylindrical recess 22 formed by attaching a washer 24 made of a conductive metal plate along the lower end of the inner wall of the cylindrical recess 22. In between, the small diameter portion 23b is compressed and disposed so as to elastically contact the head portion 26a and the large diameter portion 23a elastically contact the upward stepped portion 24a.

  The external terminal 26 is fixed to the printed wiring board 30 by the external coil spring 23 being elastically mounted between the lower surface of the head portion 26a of the external terminal 26 and the upward stepped portion 24a of the cylindrical recess 22 below the external coil spring 23. Before mounting (see FIG. 5), the head 26a acts to elastically contact the inner top surface of the cylindrical recess 22 to temporarily hold the external terminal 26 on the coaxial connector 10 side, and the external terminal 26 is printed wiring. After mounting fixed to the board 30, the coaxial connector 10 is brought into contact with the plane of the printed wiring board 30 and positioned so as to urge the flange portion 11 toward the plane side of the printed wiring board 30.

  In each of the embodiments described above, the center terminal 5 and the external terminals 6 and 26 are penetrated to the back surface of the printed wiring board 30 and soldered to the corresponding conductive patterns on the back surface. The present invention can also be applied to a surface mount structure that is solder-connected to an opposing conductive pattern.

  In each of the above-described embodiments, the shaft 6a of the external terminal 6, the inner wall of the center terminal receiving portion 8, and the inner wall of the cylindrical recess 22 are each provided with a spring receiving ring 16, a washer 18, 24 is attached to the shaft portion 6 a of the external terminal 6, the central terminal receiving portion 8, and the cylindrical concave portion 22 itself so as to receive one of the external coil springs 13 and 23 and the central coil spring 17. Good.

  Further, the external coil springs 13 and 23 and the center coil spring 17 are formed in a truncated cone shape. However, the external contact is provided at each position where the coaxial connector 10 moves relative to the external terminals 6 and 26 and the central terminal 5. 4 and the external terminals 6 and 26 and the center contact 2 and the center terminal 5 are not limited to a truncated cone shape as long as they are always electrically connected.

  It is suitable for a connector mounting structure in which a printed wiring board on which a connector is mounted and a housing in which a window hole facing a part of the connector is formed are integrally attached.

1 Connector mounting structure (first embodiment)
2 Center contact 3 Insulator 4 External contact 5 Center terminal 6 External terminal 6a Shaft part 6b Hook 8 Center terminal receiving part 8 'Relative movement gap 9 Tubular outer shell 10 Coaxial connector 11 Flange part 12 Through hole (relative movement gap)
13 External coil spring (first conductive connector)
17 Center side coil spring (second conductive connector)
19 O-ring 20 connector mounting structure (second embodiment)
22 Cylindrical recess (first recess)
23 External coil spring (first conductive connector)
26 External terminal 30 Printed wiring board 31 Housing 31a Window hole

Claims (9)

Insulator that fits and connects with the mating connector and contacts the external connector of the mating connector, the center contact that contacts the center connector of the mating connector, and the external contact and the center contact that are insulated from each other A connector having
An external terminal electrically connected to the external contact;
A center terminal for electrical connection to the center contact;
A connector mounting structure in which an external terminal and a center terminal are each solder-connected to a corresponding conductive pattern of a printed wiring board, and a connector is mounted on the printed wiring board.
Around the external terminal and the center terminal of the connector, a relative movement gap that makes the external terminal and the center terminal relatively movable within a predetermined movement range along the plane of the printed wiring board is formed.
A first conductive connector that is always electrically connected to the external contact while the external terminal is relatively moved in the moving range is disposed between the external terminal and the external contact,
A second conductive connector that is always electrically connected to the center contact while the center terminal is relatively moved in the moving range, is disposed between the center terminal and the center contact;
The connector is mounted on the printed wiring board so as to be movable within the moving range along the plane of the printed wiring board in a state where the external contact and the center contact are electrically connected to the corresponding conductive patterns of the printed wiring board, respectively. Connector mounting structure. The connector is a coaxial connector in which external contacts are coaxially arranged via an insulator around the center contact axis.
2. The connector mounting structure according to claim 1, wherein the printed wiring board faces a window hole of a housing integrally fixed, and is fitted and connected to a mating connector. The connector mounting structure according to claim 2, wherein an elastic waterproof ring is disposed in close contact between an inner wall of the window hole and an external contact. The relative movement gap formed around the external terminal is a through-hole penetrating vertically from the plane of the external contact to the bottom surface facing the printed wiring board,
The external terminal is connected to a shaft portion that passes through the through hole and relatively moves within the predetermined movement range within the through hole, and a shaft portion that protrudes upward from the through hole, and has a diameter larger than the opening on the plane side of the through hole. And consist of
The first conductive connection body is a conductive coil spring that is elastically mounted between the external contact and the shaft portion in the through hole, and biases the collar portion toward the plane of the external contact. The connector mounting structure according to claim 3. The coil spring is a frustoconical coil spring in which a coil is wound along the outer shape of the truncated cone, with the large diameter portion at one end abutting the downward stepped portion of the external contact and the small diameter portion at the other end around the shaft portion. The connector mounting structure according to claim 4, wherein the connector mounting structure is mounted between the external contact and the shaft portion. The relative movement gap formed around the external terminal is a first recess formed in the external contact that opens on the plane side of the printed wiring board,
The first conductive connection body is a conductive coil spring that is elastically mounted between the external contact and the external terminal in the first recess, and biases the external terminal toward the inner top surface of the first recess of the external contact. The connector mounting structure according to any one of claims 1 to 3, wherein the connector mounting structure is characterized in that: The coil spring is a truncated conical coil spring in which a coil is wound along the outer shape of a truncated cone. The large diameter portion at one end is in contact with the upward stepped portion of the external contact, and the small diameter portion at the other end is around the external terminal. 7. The connector mounting structure according to claim 6, wherein the connector mounting structure is mounted between the external contact and the external terminal. The relative movement gap formed around the center terminal is a second recess formed in the center contact opening on the plane side of the printed wiring board,
The second conductive connector is a conductive coil spring that is elastically mounted between the center contact and the center terminal in the second recess and biases the center terminal toward the inner top surface of the second recess of the center contact. The connector mounting structure according to any one of claims 1 to 3, wherein the connector mounting structure is characterized in that: The coil spring is a truncated conical coil spring in which a coil is wound along the outer shape of a truncated cone. The large diameter portion at one end is in contact with the upward stepped portion of the center contact, and the small diameter portion at the other end is around the center terminal. 9. The connector mounting structure according to claim 8, wherein the connector mounting structure is mounted between the center contact and the center terminal.

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