JP2018106819A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a size of a connector.SOLUTION: A connector comprises: an electric contact member 20 having an opposite surface 21 opposite to a contact surface 81 provided in a mating terminal 80; a housing that holds the electric contact member 20; an inclined winding coil spring 60 that has a coil state in which a conductive wire material 61 is wound at plural times, in which a center axis A is arranged in the housing at a posture which is parallel to the opposite surface 21 of the electric contact member 20, and which is nipped between the contact surface 81 and the opposite surface 21 when the mating terminal 80 and the electric contact member 20 are approached; and a holding axis 70 that is provided in the housing so as to become an insertion state to both end parts of the intended winding coil spring 60. The holding axis 70 is provided at a position decentered to the opposite surface 21 side from the center axis A of the intended winding coil spring 60 at a position where the intended winding coil spring 60 is contacted to the opposite surface 21.SELECTED DRAWING: Figure 7

Description

  The technology disclosed in this specification relates to a connector.

  A connector generally has a configuration in which a pair of terminals are connected to each other and connected, but there is also a connector in which a conductive coil spring is placed between the pair of terminals so as to be sandwiched between them and the terminals are connected to each other. Known (for example, JP 2008-204634 A (Patent Document 1 below)). Specifically, a groove is provided on the outer periphery of the cylindrical terminal, and an oblique winding spring is disposed in the groove. The slant winding spring is configured such that a strand made of a conductive spring material is inclined with respect to its winding axis and wound in a spiral shape, and its winding surface is elliptical. Moreover, it arrange | positions in a groove | channel in the state which joined the both ends of the strand of the diagonal winding spring, and became cyclic | annular as a whole. Then, when the cylindrical terminal is fitted onto the columnar terminal, an oblique winding spring is sandwiched between the terminals and the terminals are connected to each other.

JP 2008-204634 A

  However, in the terminal of Japanese Patent Application Laid-Open No. 2008-204634 (Patent Document 1), an oblique winding spring is used in an annular shape, and a cylindrical shaft or a cylindrical inner surface is used to position the annular oblique winding spring. Grooves were formed and the cost was high. In addition, since the slant winding spring is used in an annular shape, it is difficult to reduce the size.

  In the connector disclosed in this specification, an electrical contact member having a facing surface facing a contact surface provided on a mating terminal, a housing holding the electrical contact member, and a conductive wire are wound a plurality of times. A coil shape is disposed in the housing in a posture in which a central axis thereof is parallel to the facing surface of the electrical contact member, and the contact surface and the electrical contact member when the counterpart terminal and the electrical contact member approach each other A diagonally wound coil spring sandwiched between the opposing surfaces; and a holding shaft provided in the housing so as to be inserted into both ends of the diagonally wound coil spring, wherein the holding shaft is the diagonally wound coil spring. Is provided at a position eccentric to the facing surface side with respect to the central axis of the oblique coil spring at the position in contact with the facing surface.

  In this connector, when the mating terminal approaches the electrical contact member side, the slant winding coil spring in the lying position is compressed between the mating terminal and the electrical contact member, and the winding surface of the slant winding coil spring collapses so that each winding surface collapses. The electrical connection between the mating terminal and the electrical contact member via the diagonally wound coil spring is realized. In this configuration, if the approaching stroke amount of the mating terminal is different, the distance between the electrical contact member and the mating terminal will be changed, but the two are not in direct contact with each other, but are electrically connected via a diagonally wound coil spring. Therefore, the above-described distance fluctuation is absorbed by the change in the degree of tilting deformation of the diagonally wound coil spring, and a reliable electrical connection can be ensured in a relatively wide distance range.

  And, according to this connector, since the linear oblique coil spring is used in a laterally inclined posture that is parallel to the opposing surface of the electrical contact member, it is smaller than the case where the oblique coil spring is used in an annular shape. Is possible.

  By the way, when such a linear oblique coil spring is sandwiched between the electrical contact member and the mating terminal and compressed, not only the above-described collapse deformation but also the oblique coil spring is compressed. It has been found that lifting deformation occurs in which both ends are lifted from the electrical contact member and the mating terminal. When this lifting deformation occurs, an increase in resistance is caused by a decrease in the number of contact points between the diagonally wound coil spring and the electrical contact member or the mating terminal.

  On the other hand, in the connector disclosed in this specification, holding shafts that hold the diagonally wound coil springs are arranged at both ends of the diagonally wound coil springs, and the diagonally wound coil springs are connected to the electrical contact member. Since it is provided at a position that is eccentric to the opposite surface side from the central axis of the diagonally wound coil spring at the position in contact with the opposite surface, the holding shaft and the opposite surface are in a positional relationship close to each other at both ends of the obliquely wound coil spring. As a result, it is possible to suppress floating deformation of the diagonally wound coil spring, and consequently increase in resistance caused by the deformation.

  In order to achieve a positional relationship in which the holding shaft and the facing surface are close to each other, it is possible to make the outer diameter of the holding shaft close to the inner diameter of the diagonally wound coil spring. Since the spring deformation itself is also restricted, it is difficult to ensure electrical connection in a relatively wide distance range utilizing the spring property of the obliquely wound coil spring.

As an embodiment of the connector disclosed in this specification, the following configuration may be adopted.
The holding shaft may be made of a single bar penetrating through the oblique coil spring, and both end portions of the holding shaft may be fixed to the housing.

  The holding shaft penetrates between the diagonally wound coil springs and both ends thereof are fixed to the housing, so that the diagonally wound coil springs can be detached from the holding shaft when the connector is manufactured or in contact with the mating terminal. Can be suppressed.

  The distance between the holding shaft and the facing surface of the electrical contact member may be set to 1.1 to 2 times the outer diameter of the conductive wire constituting the oblique coil spring. .

  When the distance between the holding shaft and the facing surface of the electrical contact member is set as described above, the lifting deformation of the diagonally wound coil spring can be minimized while considering manufacturing errors and manufacturing man-hours.

  According to the terminal disclosed in the present specification, it is possible to reduce the size by using the diagonally wound coil spring.

The perspective view of the connector concerning an embodiment, and a mating connector Connector perspective view Partial cutaway perspective view of connector Connector exploded perspective view Cross-sectional view before connection with mating terminal Sectional view in contact with mating terminal Cross section when connected to the mating terminal Sectional view in a state where the diagonally wound coil spring is pressed against the electrical contact member and the mating terminal without the holding shaft

<Embodiment>
The embodiment will be described with reference to the drawings of FIGS.
The connector 10 of this embodiment is electrically connected by being abutted against the mating terminal 80. The connector 10 includes an electrical contact member 20, a housing 30, a diagonally wound coil spring 60, and a holding shaft 70. In the following description, the upper side in FIG. 5 will be referred to as the upper side, and the lower side in FIG. 5 (the counterpart terminal 80 side) will be described as the lower side. Also, the left side in FIG. 5 is the front side, and the right side in FIG. 5 is the rear side.

  As shown in FIGS. 1 and 4, the electrical contact member 20 is obtained by pressing a metal plate material such as a copper alloy, and is formed into a substantially L shape by bending a flat plate material. The electrical contact member 20 has a main body portion 23 having a facing surface 21 facing a contact surface 81 provided on a mating terminal 80, which will be described later, and an external portion that rises upward in an arrangement orthogonal to the facing surface 21 and is connected to an external circuit. And a connecting portion 25. The main body portion 23 has a rectangular shape with a long side in the front-rear direction and a short side in the width direction, and is larger than the outer dimensions of the diagonally wound coil spring 60. The lower surface of the main body portion 23 is the facing surface 21, and is a surface that contacts the diagonally wound coil spring 60 when the mating terminal 80 approaches. The external connection portion 25 is provided with a long hole bolt hole 27.

  The housing 30 is made of synthetic resin, and can accommodate a plurality of (three in this embodiment) electrical contact members 20 arranged in the width direction, as shown in FIGS. 3 and 4. The housing 30 includes a housing main body 31 that can accommodate the electrical contact member 20 and the diagonally wound coil spring 60, a cover member 33 that covers the upper surface opening of the housing main body 31, and the housing main body 31 and the cover member 33. And a locking member 35 to be stopped. As shown in FIGS. 1 and 4, the locking member 35 includes a locking plate 37 and a screw 39. The locking plate 37 covers an overhanging portion 57 of the cover member 33 described later from above, and is fixed to the housing main body 31. The locking plate 37 has a dimension in the front-rear direction that is slightly shorter than the dimension in the front-rear direction of the housing main body 31, and screw insertion holes through which screws 39 are inserted are provided at both ends thereof. The screw 39 is fixed to a screw hole 53 provided in the housing main body 31.

  As shown in FIGS. 2 and 4, the housing main body 31 is a rectangular column having a rectangular shape in plan view with the long side in the left-right direction. The housing main body 31 is provided with a cover housing portion 41, an electrical contact member housing portion 43, a coil housing portion 45, and a mating terminal housing portion 47. Further, the upper end portion of the housing main body portion 31 spreads outward in the left-right direction to form a flange portion 49. A metal collar 49 </ b> A is insert-molded in the flange portion 49 so that a bolt for fixing to the mating housing 85 can be inserted.

  As shown in FIGS. 3 and 4, the cover accommodating portion 41 is recessed from the upper surface of the housing main body portion 31 (flange portion 49) to the lower side by the plate thickness (size in the vertical direction) of the cover member 33, It has a substantially rectangular shape in plan view. At both ends in the left-right direction of the cover accommodating portion 41, an overhanging portion accommodating portion 41A for accommodating an overhanging portion 57 of the cover member 33 described later is provided. The overhanging portion accommodating portion 41A is provided between the screw holes 53 arranged in the front-rear direction, and is provided at the center position in the front-rear direction of the cover accommodating portion 41.

  As shown in FIGS. 4 and 5, the electric contact member accommodating portion 43 is provided so as to be recessed downward from the cover accommodating portion 41, and is provided side by side in the width direction so as to correspond to each electric contact member 20. ing. The electrical contact member accommodating portion 43 has an inner dimension that is slightly larger than the outer dimension of the main body portion 23 of the electrical contact member 20, and the vertical dimension is that of the cover member 33 described later than the plate thickness of the electrical contact member 20. It is larger by the vertical dimension of the pressing part 59. The rear surface of the electrical contact member housing portion 43 is flush with the rear surface of the cover housing portion 41, while the front surface of the electrical contact member housing portion 43 is located slightly behind the position of the front surface of the cover housing portion 41. ing. In addition, a partition wall 43 </ b> A is provided between the electrical contact member accommodating portions 43 to isolate the electrical contact members 20 from each other.

  As shown in FIGS. 3 and 4, the coil housing portion 45 is provided so as to be recessed downward from the electrical contact member housing portion 43, and is provided side by side in the left-right direction so as to correspond to each obliquely wound coil spring 60. It has been. The inner dimensions of the coil housing portion 45 in the front-rear direction and the left-right direction are larger than the outer dimensions of the diagonally wound coil spring 60, and the front-rear direction and the left-right direction of the facing surface 21 of the electrical contact member 20 and the contact surface 81 of the mating terminal 80. Smaller than dimensions. Further, the vertical dimension of the coil housing portion 45 is smaller than the vertical dimension when the diagonally wound coil spring 60 is pressed against the mating terminal 80 as shown in FIG. Therefore, when the diagonally wound coil spring 60 is in contact with the electrical contact member 20 and the mating terminal 80, there is no possibility that the electrical contact member 20, the mating terminal 80 and the coil housing portion 45 are in contact. Further, the coil housing part 45 is arranged so that the holding shaft 70 penetrates in the front-rear direction, and a shaft insertion hole 45 </ b> A through which the holding shaft 70 is inserted penetrates the wall part in the front-rear direction of the coil housing part 45. doing.

  As shown in FIGS. 2 and 7, the mating terminal housing portion 47 is provided by widening the lower portion of the coil housing portion 45 and opens downward. The mating terminal accommodating portion 47 is recessed upward from the lower surface of the housing main body portion 31. The mating terminal accommodating portion 47 has an inner dimension larger than the outer dimension of the contact surface 81 of the mating terminal 80, and a part of the mating terminal 80 that presses the diagonally wound coil spring 60 enters. Further, the lower end position of the mating terminal accommodating portion 47 is the same as or slightly above the lower end position of the diagonally wound coil spring 60 in the natural state. That is, the diagonally wound coil spring 60 in the natural state is accommodated in the coil accommodating portion 45 and the counterpart terminal accommodating portion 47. And the cover accommodating part 41, the electrical contact member accommodating part 43, the coil accommodating part 45, and the other party terminal accommodating part 47 mutually communicate with the up-down direction, and the through-hole opened to the housing main-body part 31 at the up-down direction. Is provided.

  As shown in FIGS. 4 and 5, a rear wall portion 51 is provided at the rear end portion of the housing main body portion 31 so as to be continuous from the rear walls of the electrical contact member housing portion 43 and the cover housing portion 41. ing. The rear wall portion 51 accommodates the lower end portion of the external connection portion 25 of the electrical contact member 20 together with the cover member 33. The rear wall 51 is provided with a partition wall 51A that is combined with a partition portion 58A of the cover member 33 to be described later and partitions between the external connection portions 25.

  As shown in FIGS. 4 and 5, the cover member 33 covers the electrical contact member 20 from above and is accommodated in the cover accommodating portion 41. The cover member 33 includes a cover main body portion 55, an overhang portion 57, a cover side rear wall portion 58, and a pressing portion 59. The cover main body 55 has a rectangular shape in plan view, and collectively covers the main body 23 of the electrical contact member 20 arranged in the left-right direction. When the cover main body portion 55 is accommodated in the cover accommodating portion 41, the upper surface of the cover main body portion 55 is flush with the upper surfaces of the housing main body portion 31 and the flange portion 49.

  And the overhang | projection part 57 is provided in the both ends of the left-right direction of the cover main-body part 55 so that it may protrude in the left-right direction outer side. The projecting dimension of the overhanging portion 57 is smaller than the width dimension of the locking plate 37, and the entire overhanging portion 57 is covered with the locking plate 37. The overhanging portion 57 accommodated in the overhanging portion accommodation portion 41A is covered with the locking plate 37, and the locking plate 37 is fixed by the screw 39, so that the cover member 33 is secured by the locking member 35 to the housing body. It is fixed to the part 31.

  Further, a cover-side rear wall portion 58 is provided so as to rise upward from the rear end portion of the cover main body portion 55. The cover-side rear wall portion 58 houses the lower end portion of the external connection portion 25 together with the rear wall portion 51. The cover-side rear wall portion 58 is provided with a partition portion 58 </ b> A that partitions the external connection portions 25. The partition portion 58A is provided with a groove extending in the vertical direction, and the partition wall 51A and the partition wall 51A are connected to the external connection portion 25 by engaging the partition wall 51A of the rear wall portion 51 with the groove. It has a labyrinth structure that can ensure the creepage distance between them.

  A pressing portion 59 is provided on the lower surface of the cover main body portion 55. The pressing portion 59 is provided so as to correspond to each electrical contact member 20 and protrudes downward from the lower surface of the cover main body portion 55. The outer dimension of the pressing part 59 is smaller than the outer dimension of the main body part 23 of the electric contact member 20 and larger than the outer diameter dimension of the diagonally wound coil spring 60. Therefore, when the electrical contact member 20 is pressed by the diagonally wound coil spring 60, it is possible to suppress the electrical contact member 20 from floating upward.

  As shown in FIGS. 3 and 5, the diagonally wound coil spring 60 is formed by winding a conductive wire 61 around the central axis A in a spiral shape, and as a whole, extends along the central axis A. It is straight. In the oblique coil spring 60, the inclination of the conductive wire 61 with respect to the central axis A is within 90 degrees (so that it falls down in the same direction), although the angle with respect to the central axis A differs every half circumference. The oblique coil spring 60 has an elliptical shape at the end surface (the surface viewed from the front or the rear). When a load is applied so as to be sandwiched from both sides of the elliptical short axis direction, each conductive wire 61 is provided. The vertical winding dimension (dimension in the direction perpendicular to the central axis A) of the slant winding coil spring 60 is deformed to be small while causing the falling deformation such that the (winding surface) further collapses with respect to the central axis A. .

  Note that the diagonally wound coil spring 60 has a non-linear region in which the spring load does not change much even if the amount of displacement (the amount of displacement of the vertical dimension of the spring) is changed. If the approach stroke amount of the mating terminal 80 with respect to the electrical contact member 20 is different, the distance variation between the electrical contact member 20 and the mating terminal 80 is caused. Therefore, the distance fluctuation is absorbed by the change in the degree of the tilting deformation of the diagonally wound coil spring 60. In addition, since the spring load of the diagonally wound coil spring 60 does not change much due to the variation in the distance between the electrical contact member 20 and the mating terminal 80, the contact pressure between the diagonally wound coil springs 60 is stable and a relatively wide distance. A reliable electrical connection can be secured within the range.

  The diagonally wound coil spring 60 is disposed in a lying position in which the coil axis A is parallel along the facing surface 21. If such a linear oblique coil spring 60 is sandwiched between the electrical contact member 20 and the mating terminal 80 and compressed, not only the above-described collapse deformation but also the oblique coil spring is shown in FIG. It has been found that lifting deformation occurs in which both end portions of 60 are lifted from the electrical contact member 20 and the mating terminal 80. When this lifting deformation occurs, an increase in resistance due to a decrease in the number of contact points between the diagonally wound coil spring 60 and the electrical contact member 20 or the mating terminal 80 occurs.

  Therefore, as shown in FIGS. 3 and 5, a holding shaft 70 is inserted into the diagonally wound coil spring 60. The holding shaft 70 is a single round bar made of SUS and penetrates through the oblique coil spring 60. The central axis of the holding shaft 70 is arranged so as to be parallel to the facing surface 21 of the electrical contact member 20. The longitudinal dimension of the holding shaft 70 is larger than the longitudinal dimension of the housing main body 31. The diameter of the holding shaft 70 is smaller than the inner dimension of the short axis of the obliquely wound coil spring 60 in the pressed state. The both ends of the holding shaft 70 are inserted into the shaft insertion holes 45 </ b> A of the coil housing portion 45, and are fixed to the housing main body 31 by the C ring 71 on the outside.

  The holding shaft 70 is provided at a position that is eccentric to the opposed surface 21 side with respect to the central axis A of the obliquely wound coil spring 60 at a position where the oblique coil spring 60 is in contact with the opposed surface 21 of the electrical contact member 20. More specifically, the distance between the holding shaft 70 and the facing surface 21 of the electrical contact member 20 is about 1.1 to 2 times the outer diameter of the conductive wire 61. More preferably, the distance between the holding shaft 70 and the facing surface 21 of the electrical contact member 20 is about 1.2 to 1.3 times the outer diameter of the conductive wire 61.

  The mating terminal 80 is made of a conductive metal, and as shown in FIGS. 4 and 5, a plate-like member extending in the vertical direction is bent forward at a substantially right angle to form a substantially L shape. Yes. An upper surface on one end side of the mating terminal 80 facing the electrical contact member 20 is a contact surface 81. The dimension of the contact surface 81 in the front-rear direction is the same as that of the opposing surface 21 of the electrical contact member 20, and is longer than the dimension in the front-rear direction of the diagonally wound coil spring 60 in the natural state. Further, the dimension in the width direction of the contact surface 81 is larger than the outer diameter dimension of the diagonally wound coil spring 60. The mating terminals 80 are insert-molded in the mating housing 85 so that three mating terminals 80 are arranged in the left-right direction, and the contact surface 81 is exposed.

The connector 10 of the present embodiment is configured as described above, and an assembling method thereof will be described.
First, one end of the holding shaft 70 is inserted into the shaft insertion hole 45 </ b> A of the coil housing portion 45 so that one end of the holding shaft 70 protrudes into the coil housing portion 45. In this state, while being inserted through the holding shaft 70 into the inside of the oblique winding coil spring 60, it is pushed to the opposite side of the holding shaft 70 coil housing portion 45 and inserted into the shaft insertion hole 45A. Then, the diagonally wound coil spring 60 and the holding shaft 70 are disposed at predetermined positions of the housing main body 31 by stopping the C-ring 71 at both ends of the holding shaft 70. In this way, the holding shaft 70 is fixed to the housing main body 31 in a state of passing through the oblique winding coil spring 60, so that the oblique winding coil spring 60 is held by the holding shaft when the connector 10 is assembled or in contact with the mating terminal 80. It can suppress that it removes from 70.

  Next, the main body portion 23 of each electrical contact member 20 is accommodated in each electrical contact member accommodation portion 43. Then, the cover member 33 is accommodated in the cover accommodating portion 41. Each pressing part 59 of the cover member 33 is in contact with the upper surface of the main body part 23 of the electrical contact member 20, thereby suppressing the floating of each electrical contact member 20. Then, in a state where the overhang portion 57 is accommodated in the overhang portion accommodating portion 41A, the screw 39 is fixed to the screw hole 53 so that the locking plate 37 of the locking member 35 covers the overhang portion 57, and the connector 10 Is assembled. Thus, by assembling the connector 10 using the linear oblique coil spring 60, the entire connector 10 can be reduced in size.

  As shown in FIG. 5, the assembled connector 10 is in a state before the mating terminal 80 comes into contact with the diagonally wound coil spring 60. It is held in contact with the inner peripheral surface. Since the holding shaft 70 is parallel to the opposing surface 21, the oblique winding coil spring 60 is held in a posture in which the central axis A of the oblique winding coil spring 60 is parallel to the opposing surface 21 of the electrical contact member 20. It is held by a shaft 70. At this time, the distance between the holding shaft 70 and the facing surface 21 of the electric contact member 20 is 1.1 to 2 times (more preferably 1.2 to 1.3 times) the outer diameter of the conductive wire 61. Therefore, there is almost no gap between the outer peripheral surface of the diagonally wound coil spring 60 and the opposing surface 21 of the electrical contact member 20.

  As shown in FIG. 6, when the connector 10 and the mating terminal 80 are relatively close to each other, the contact surface 81 of the mating terminal 80 comes into contact with the outer peripheral portion of the slant winding coil spring 60, and The outer peripheral surface contacts the facing surface 21 of the electrical contact member 20. In this state, the short axis of the diagonally wound coil spring 60 is sandwiched between the contact surface 81 of the mating terminal 80 and the facing surface 21 of the electrical contact member 20 in the vertical direction.

  As shown in FIG. 7, when the pressing force from the mating terminal 80 is applied to the diagonally wound coil spring 60, the obliquely wound coil spring 60 falls and deforms so that the conductive wire 61 further falls with respect to the central axis A. . Further, when the body is deformed to fall, both ends of the diagonally wound coil spring 60 are also lifted so that they are lifted from the electrical contact member 20 and the mating terminal 80.

  However, since the holding shaft 70 is inserted into both end portions of the diagonally wound coil spring 60, the inner peripheral surface of the raised conductive wire 61 comes into contact with the outer peripheral surface of the holding shaft 70, and further lifting deformation can be suppressed. . Specifically, since the opposing surface 21 of the electric contact member 20 and the holding shaft 70 are close to each other at the rear end portion of the diagonally wound coil spring 60, the conductive wire 61 for one or two wires is opposed to the opposing surface. At a stage away from 21, the inner peripheral surface of the conductive wire 61 at the rear end comes into contact with the holding shaft 70. Therefore, the number of the conductive wires 61 that are separated from the facing surface 21 is extremely reduced due to the rising deformation. On the other hand, at the front end portion of the diagonally wound coil spring 60, there is a distance between the contact surface 81 of the mating terminal 80 and the holding shaft 70 in order to cope with the relative movement of the mating terminal 80. Therefore, the number of the conductive wires 61 that are separated from the contact surface 81 is larger than the number that is separated from the facing surface 21. However, when the inner surface of the conductive wire 61 at the end is in contact with the holding shaft 70, further lifting deformation is suppressed, and the number of the conductive wires 61 that are separated from the contact surface 81 is the number when the holding shaft 70 is not provided. It can be suppressed in comparison.

  Then, the mating terminal 80 and the electric contact member 20 are in an electrically connected state via the oblique coil spring 60. At this time, by suppressing the floating deformation, the electrical contact member 20 and the mating terminal 80 can secure a large number of contacts with the diagonally wound coil spring 60, and the contact resistance can be lowered. Further, by setting the outer diameter dimension of the holding shaft 70 to a dimension that does not interfere with the falling deformation, it is possible to cope with the falling deformation of the diagonally wound coil spring 60 due to the variation in the distance between the mating terminal 80 and the electrical contact member 20.

  As described above, in the connector according to the present embodiment, when the mating terminal 80 approaches the electrical contact member 20 side, the oblique winding coil spring 60 in the lying position is compressed between the mating terminal 80 and the electrical contact member 20, and the diagonal The electrical connection between the mating terminal 80 and the electrical contact member 20 is realized via the diagonally wound coil spring 60 while causing the falling deformation such that each winding surface of the wound coil spring 60 falls.

  Further, in this connector 10, since the linear oblique coil spring 60 is used in a laterally inclined posture that is parallel to the facing surface 21 of the electrical contact member 20, compared to the case where the oblique coil spring 60 is used in an annular shape. It becomes possible to reduce the size.

  Further, holding shafts 70 are inserted into both end portions of the diagonally wound coil spring 60 in order to cope with lifting deformation caused by sandwiching and compressing the linearly inclined coiled spring 60. By bringing the holding shaft 70 and the facing surface 21 of the electrical contact member 20 close to each other, the number of conductive wires 61 that are separated from the facing surface 21 is suppressed due to floating deformation. Further, by making the outer diameter dimension of the holding shaft 70 smaller than the dimension in the short axis direction of the tilted coil spring 60 that has fallen and deformed, it is difficult to interfere with the tilt deformation of the tilted coil spring 60.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects.
(1) In the above-described embodiment, the holding shaft 70 has one round bar penetrating the inside of the diagonally wound coil spring 60, but the two bar members may hold only both ends.

  (2) In the above embodiment, the distance between the holding shaft 70 and the facing surface 21 of the electrical contact member 20 is about 1.1 to 2 times the outer diameter of the conductive wire 61, but the outside of the conductive wire 61 It may be the same as the diameter, or may be a distance twice or more.

  (3) In the above embodiment, the external connection portion 25 is connected to the external circuit by being led out of the housing 30. However, by connecting the electric wire connected to the external circuit to the electrical contact member, You may connect with a circuit.

  (4) In the above embodiment, the holding shaft 70 is made of SUS, but may be provided of brass or the like. Further, although the holding shaft 70 is a round bar, it may be a flat plate, a square bar, or an elliptical round bar.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Electric contact member 21 ... Opposite surface 30 ... Housing 31 ... Housing main-body part 33 ... Cover member 45 ... Coil accommodating part 45A ... Shaft insertion hole 55 ... Cover main-body part 60 ... Diagonal winding coil spring 61 ... Conductive wire 70 ... holding shaft 71 ... C ring 80 ... mating terminal 81 ... contact surface 85 ... mating housing A ... central axis

Claims (3)

An electrical contact member having a facing surface facing the contact surface provided on the mating terminal;
A housing for holding the electrical contact member;
A conductive wire is coiled around a plurality of turns, and is disposed in the housing in a posture in which the central axis is parallel to the facing surface of the electrical contact member, and the mating terminal, the electrical contact member, An obliquely wound coil spring sandwiched between the contact surface and the opposing surface when
A holding shaft provided in the housing so as to be inserted into both ends of the oblique coil spring,
The holding shaft is a connector provided at a position eccentric to the opposed surface side with respect to a central axis of the oblique coil spring at a position where the oblique coil spring is in contact with the opposed surface.   The connector according to claim 1, wherein the holding shaft is made of a single bar that penetrates through the oblique coil spring, and both end portions of the holding shaft are fixed to the housing.   The distance between the said holding shaft and the said opposing surface of the said electric contact member is set to 1.1 to 2 times the outer diameter dimension of the electroconductive wire which comprises the said diagonally wound coil spring. The connector according to claim 2.

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