connection socket

Abstract

Connection socket (10) which has: a cylindrical terminal socket main body (11) including a terminal plug receiving space formed in an axial direction inside, and a separate cylindrical spring contact (13) containing a long spring piece (13L) inserted into the connector plug receiving space, wherein a bending part (13S) is fixed to a fixing part (11S), wherein the bending part (13S) is formed at an end part of a terminal plug insertion side of the spring contact (13), wherein the fixing part (11S) is formed in an end part of the terminal plug insertion side of the terminal socket main body (11), and wherein in this state, a joint (11T) at which one end face (14) and the other end face (15) positioned in a circumferential direction of the female terminal main body (11) face each other, and a joint (T) at which one end face (16) and the other end face (17) positioned in a circumferential direction of the spring contact (13) face each other are positioned so as to overlap each other in a radial direction, wherein the fixing part (11S) is a notched part formed by notching the end part of the male terminal insertion side of the female terminal main body (11) and is configured to fix the bent part (13S).

Description

Technical area

[0001] The present invention relates to a female terminal used in a connector used in connecting various types of machines loaded in an electric vehicle or a hybrid vehicle, and more particularly to a female terminal in which a cylindrical spring contact that comes into contact with the corresponding male terminal is provided in a terminal main body. Background of the technology

[0002] As a terminal socket in the related art, a terminal socket described in Patent Literature 1 is known. Fig. 4(A) is a perspective view of a terminal socket described in Patent Literature 1, and Fig. 4(B) is a longitudinal sectional view taken along an axial direction of the terminal socket of Fig. 4(A). Fig. 5 is an exploded perspective view of the connector socket of Fig. 4(A).

[0003] In Fig. 4(A), a female terminal 100 consists of a female terminal main body 110, a cap 120, and a spring contact 130. Both the female terminal main body 110 and the spring contact 130 are formed by stamping a metal plate, and the female terminal main body 110 is formed into a cylindrical shape by press working so that it is rounded. The cap 120 is formed from a synthetic resin by injection molding.

[0004] The terminal socket main body 110, the cap 120 and the spring contact 130 are described in a simple manner below.

[0005] As in Fig. 4(B), in the female terminal main body 110, a cap locking part 110A, a spring receiving part 110B, a spring stopper 110C, a convex part 110D, and a fixing part 110K are formed in this order from a tip end side (male terminal insertion side: left side of the drawing).

[0006] Furthermore, the cap locking part 110A is formed at the distal tip end of the female terminal main body 110, and an inner diameter of the cap locking part 110A is set to be slightly larger than the maximum outer diameter of the spring contact 130. An outer peripheral part protruding outward in a radial direction of the cap locking part 110A is formed as a locking protrusion that engages with a locking claw formed inside the cap 120.

[0007] An inner diameter of the spring receiving part 110B is formed to substantially correspond to the maximum outer diameter of the spring contact 130, and the spring contact 130 is housed in the spring receiving part 110B. The fault receiving part 110B is formed into a cylindrical shape by press working so that it is rounded. As shown in Fig. 5 and Fig. 6, is at a joint 110T (see Fig. 5 and Fig. 6) at which one end surface and the other end surface are opposed to each other in a circumferential direction of the spring receiving part 110B, therefore, formation of a slight gap is inevitable.

[0008] An inner diameter of the spring stopper 110C is formed to be smaller than an outer diameter of a connecting part 130R of the spring contact 130. Therefore, when the connecting part 130R abuts against the spring stopper 110C, the spring contact 130 accommodated in the spring receiving part 110B is restricted from moving further rearward (in a direction of the fixing part 110K), and the spring contact 130 is prevented from falling out from a rear side of the female terminal main body 110.

[0009] The convex part 110D is formed in a circumferential direction of a trunk part of the female terminal main body 110, and an outer diameter of the convex part 110D becomes substantially identical to an outer diameter of the cap 120. Since an inner diameter of a terminal accommodating chamber of a connector housing in which the female terminal 100 is accommodated becomes substantially identical to the outer diameter of the cap 120, when the female terminal 100 is accommodated in the terminal accommodating chamber of the connector housing, the convex part 110D of the female terminal main body 110 is accordingly pressurized on an inner peripheral surface of the terminal accommodating chamber, and skewing or rattling of the female terminal 100 is prevented.

[0010] The fastening part 110K is formed in a U-shape as viewed from a front surface before the terminal box 100 and an electric wire (not illustrated) are connected to each other. When connecting the terminal box and the electric wire, by placing a core wire of the electric wire in a U-shaped bottom part and fastening both U-shaped end parts to each other on the inner side with a tool, the electric wire is pressed to the fastening part 110K. Accordingly, the electric wire and the terminal box main body 110 are electrically connected to each other.

[0011] As in Fig. As illustrated in Fig. 4(B), the cap 120 is mainly formed by integrating an insertion opening 120G, a stopper wall 120S, and an outer wall 120W by a synthetic resin.

[0012] The stop wall 120S is connected to the insertion opening 120G and has a cylindrical shape, having an inner diameter that matches the insertion opening 120G and an outer diameter that substantially matches the inner diameter of the cap locking part 110A of the female terminal main body 110. When the cap 120 is attached to a tip end of the female terminal main body 110, the cap 120 is pressed against the cap locking part 110A of the female terminal main body 110. At this time, the stop wall 120S abuts an end surface thereof against the connecting part 130R of the spring contact 130 in the spring receiving part 110B, and the spring contact 130 is restricted from moving forward.

[0013] The outer wall 120W is integrally formed on the outer side of the stopper wall 120S at a distance having a width identical to a thickness of the cap locking part 110A. At a lower end on an inner peripheral surface of the outer wall 120W, the locking claw protrudes, which engages with the locking projection of the female terminal main body 110.

[0014] In the spring contact 130, the metal plate is punched into a perforated plate in which both end parts of a plurality of long flat spring pieces 130L, in which a center part is bent in an arc shape toward the inner side (the center side when rounded in a cylindrical shape), are connected to each other by connecting parts 130R and 130R, respectively, and is used so as to be rounded in a cylindrical shape.

[0015] Next, a mounting method of the connector socket 100 will be described.

[0016] First, both ends of the long flat spring piece 130L come into contact with each other so that both ends of both connecting parts 130R and 130R of the spring contact 130 are connected to each other, and while maintaining this state without the spring contact 130 being contracted in a diametrical direction, the spring contact 130 is inserted into the spring receiving part 110B of the terminal socket main body 110. As shown in Fig. At this time, as illustrated in Fig. 6(B), the gap 110T where one end surface and the other end surface are opposed to each other in the circumferential direction of the spring receiving part 110B, and a gap portion where one end surface and the other end surface are opposed to each other in the circumferential direction of the long flat spring piece 130L in the spring contact 130 are arranged to overlap each other in the radial direction. This is because performance at a contact point deteriorates because contact cannot be sufficiently ensured when the long flat spring piece 130L is arranged at the gap 110T of the spring receiving part 110B.

[0017] Thereafter, the cap 120 is attached to the tip end of the female connector main body 110 while pressing the stopper wall 120S of the cap 120 against the cap locking part 110A of the female connector main body 110.

[0018] At this time, an end surface of the stopper wall 120S, which is pressed against the cap locking part 110A of the female terminal main body 110, abuts against the connecting part 130R of the spring contact 130, and the spring contact 130 is held in the spring receiving part 110B.

[0019] Moreover, at the same time, the locking claw of the outer wall 120W is engaged with the locking projection on the outer periphery of the cap locking part 110A, and the cap 120 and the terminal socket main body 110 are reliably integrated with each other.

[0020] Next, a problem of the connector socket 100 is solved using Fig. 6 described.

[0021] Fig. 6(A) is a side view of the connector socket of Fig. 4(A), and Fig. 6(B) is a sectional view taken along an arrow AA in Fig. 6(A). In Fig. 6(B), at the joint 110T of the spring receiving part 110B, there is a case where a gap is generated between end surfaces where one end surface and the other end surface are opposed to each other in the circumferential direction of the spring receiving part 110B, or a case where a step is generated between the end surfaces in a case where the inner diameters of one end surface and the other end surface of the spring receiving part 110B are different from each other. When the joint 110T and the long flat spring piece 130L overlap each other, the performance at a contact point of the joint 110T deteriorates because the contact between the joint 110T and the long flat spring piece 130L cannot be sufficiently ensured. Therefore, the long flat spring piece 130L located at a position overlapping the joint 110T is not considered a contact point.

[0022] Here, the long flat spring piece 130L is not arranged at the gap 110T, and an operation for arranging a gap part T of the spring contact 130 is performed.

[0023] However, the spring contact 130 accommodated in the spring receiving part 110B of the female terminal main body 110 is restricted by the spring stopper 110C so as not to move in an insertion direction of the terminal provided in the female terminal main body 110 and is restricted by the cap 120 so as not to move in an engagement disengagement direction of the terminal, but no structure is provided in which the movement in a rotational direction is restricted.

[0024] When any rotational force is applied to the spring contact 130, the spring contact 130 rotates, for example, in an arrow direction R of Fig. 6(B), and as in Fig. 6(B) to 6(C), a case can be created in which the gap part T of the spring contact 130 is released from engagement with the upper part of the gap 110T and the regular long flat spring piece 130L is arranged at the gap 110T.

[0025] However, since the performance of the long flat spring piece 130L at the joint 110T as a contact point cannot be ensured, one spring becomes useless, and a case is created where all of the springs cannot be used as a contact point. Patent literature

[0026] [Patent Literature 1] JP 3 498 832 B

[0027] Further prior art is known from the documents US 6 358 104 B2, KR 100 733 849 B1, US 6 837 756 B2 and US 2004 / 0033732 A1. Overview of the inventionTechnical problem

[0028] With a view to solving the problems described above, an object of the present invention is to provide a terminal box that can use all of the springs as a contact point without disposing a regular spring at a joint. Means of solving the problem

[0029] In order to solve the problems described above, terminal sockets (1) to (3) according to the present invention have the following features. (1) A connector socket having: a cylindrical female connector main body including a male connector receiving space formed in an axial direction inside, and a separate cylindrical spring contact containing a long spring piece inserted into the connector plug receiving space, wherein a bending part is fixed to a fixing part, wherein the bending part is formed on an end part of a terminal plug insertion side of the spring contact, wherein the fixing part is formed in an end part of the connector plug insertion side of the connector socket main body, and wherein in this state, a joint at which one end surface and the other end surface positioned in a circumferential direction of the female terminal main body face each other, and a joint at which one end surface and the other end surface positioned in a circumferential direction of the spring contact face each other are positioned so as to overlap each other in a radial direction, wherein the fixing part is a notched part formed by notching the end part of the male terminal insertion side of the female terminal main body and is configured to fix the bent part. (2) Connection socket according to claim 1, wherein a plurality of fixing parts are provided at a plurality of locations, and a plurality of bending parts are provided at a plurality of locations, and each of the fixing parts and the bending parts is formed to be laterally asymmetrical. (3) Connection socket according to claim 1, wherein the bending part is formed by bending the end part of the terminal plug insertion side of the spring contact outward. Advantageous effects of the invention

[0030] According to the invention (1) described above, it is possible to efficiently use all of the springs as a contact point because the long flat spring piece of the cylindrical spring contact is not arranged at the cylindrical groove of the female terminal main body.

[0031] According to the invention (2) described above, the fixing part and the bending part are each formed to be laterally asymmetrical. Therefore, when all the bending parts are fixed to all the fastening parts, it is possible to prevent incorrect insertion of the spring contact into the female terminal main body because the gap part of the joint of the spring contact is created at the joint of the spring receiving part.

[0032] According to the invention (1) described above, it is possible to easily manufacture a reliable fixing part because the fixing part is formed by notching the end part of the female terminal main body.

[0033] According to the invention (3) described above, it is possible to easily manufacture a reliable bent part because the bent part is formed by folding the end part of the terminal plug insertion side of the spring contact outward. Short description of the drawings [ Fig. 1] Fig. 1(A) is a perspective view of a terminal socket according to the present invention, and Fig. 1(B) is a longitudinal sectional view taken along an axial direction of the terminal socket of Fig. 1(A). [ Fig. 2] Fig. 2 is an exploded perspective view of the connector socket of Fig. 1(A). [ Fig. 3] Fig. 3(A) is a side view of the connector socket of Fig. 1(A), and Fig. 3(B) is a sectional view taken along an arrow BB in Fig. 3(A). [ Fig. 4] Fig. 4(A) is a perspective view of a terminal socket described in Patent Literature 1, and Fig. 4(B) is a longitudinal sectional view taken along an axial direction of the terminal socket of Fig. 4(A). [ Fig. 5] Fig. 5 is an exploded perspective view of the connector socket of Fig. 4(A). [ Fig. 6] Fig. 6(A) is a side view of the connector socket of Fig. 4(A), Fig. 6(B) is a sectional view taken along an arrow AA of Fig. 6(A), and Fig. 6(C) is a sectional view illustrating a state in which a spring contact moves in an arrow direction R from Fig. 6(B) rotates and causes damage. Description of embodiments

[0034] In the following, a connector socket of the present invention is described based on Fig. 1(A) to 3(B).

[0035] Fig. 1(A) is a perspective view of the terminal socket according to the present invention, and Fig. 1 (B) is a longitudinal sectional view taken along an axial direction of the terminal socket of Fig. 1(A). Fig. 2 is an exploded perspective view of the connector socket of Fig. 1(A).

[0036] In Fig. 1(A), a terminal socket 10 consists of a terminal socket main body 11, a resin cap 12 and a spring contact 13.

[0037] Both the female terminal body 11 and the spring contact 13 are formed by stamping a metal plate, and the female terminal body 11 is formed into a cylindrical shape by press working so that it is rounded so that one end surface 14 and the other end surface 15 abut each other. The resin cap 12 is formed from a synthetic resin by injection molding.

[0038] In addition, the spring contact 130 is formed in a cylindrical shape such that one end face 16 and the other end face 17 abut each other.

[0039] The terminal socket main body 11, the resin cap 12 and the spring contact 13 are described in detail below.

[0040] As in Fig. 1 (A), the female terminal main body 11 is configured from a cylinder portion 11C on a tip end side (male terminal insertion side: left side of the drawing), a fixing portion 11K on a rear end side, and a half cylinder portion 11H connecting the cylinder portion 11C and the fixing portion 11K to each other.

[0041] As in Fig. 1(B), a spring receiving part 11B which receives the spring contact 13 (see Fig. 2), formed in a cylindrical shape within the cylinder part 11C, a resin cap holding part 11A which stabilizes and holds the resin cap 12 is formed on an outer circumference, and spring bent part locking notches 11S ( Fig. 2), which has a bent part 13S (see Fig. 2) Fix and support the spring contact 13 are formed at a plurality of locations in the end part on the terminal plug insertion side.

[0042] As in Fig. 2, the resin cap holding part 11A is engaged with the resin cap 12 through a circular ring having a predetermined thickness and a predetermined width in the axial outward direction at substantially 1 / 3 from a front part (a terminal plug insertion side) of the cylinder part 11C.

[0043] The width of the circular ring in the axial direction is the width with which it is possible to stabilize and hold the resin cap 12 in the cylinder part 11C, and the thickness of the circular ring substantially corresponds to the height of a locking claw 12A ( Fig. 1 (B)) formed on the inner side of the resin cap 12. A gentle taper is formed in the end part on the front side in the axial direction of the circular ring, and the resin cap 12 is easy to fit. Moreover, an upright protrusion is formed in the end part on the rear side (in a direction of the fixing part 11K) of the circular ring, and the fitted resin cap 12 is unlikely to come off easily.

[0044] As in Fig. 1(B), the spring receiving portion 11B has a cylindrical shape that receives the spring contact 13 in a cylindrical shape, and an inner diameter of the cylinder of the spring receiving portion 11B substantially coincides with the maximum outer diameter of the spring contact 13, and the depth of the cylinder of the spring receiving portion 11B is slightly longer than the entire length of the spring contact 13, taking into account an extension of the spring contact 13 when the terminal plug, which is not illustrated, is inserted.

[0045] As in Fig. As illustrated in FIG. 2, the spring bent locking notches 11S are notches each formed in the end portion of the terminal insertion side in correspondence with the bent portions 13S, since the spring bent locking notches 11S each lock the bent portions 13S of the spring contact 13. In the present invention, the parts where the spring bent locking notches 11S are mounted are constructed as follows.

[0046] As in Fig. 3(B), a groove 11T is formed in the cylinder part 11C, which is a gap between one end surface 14 and the other end surface 15 positioned in the circumferential direction, and five spring bent part locking notches 11S (see Fig. 2), including 11S1 to 11S6, are provided clockwise from a position corresponding to the joint 11T (see Fig. 2) of the spring receiving part 11B of the cylinder part 11C. In addition, the bending parts 13S1 to 13S5 of the bending part 13S (see Fig. 2) The spring contact 13 is locked to the respective spring bent locking notches 11S1 to 11S5. In the drawing, for ease of understanding, the spring bent locking notches 11S1 to 11S5 are illustrated larger, and the bent parts 13S1 to 13S5 are illustrated smaller. However, in actuality, the bent parts 13S1 to 13S5 do not have such a large gap between the respective bent locking notches 11S1 to 11S5.

[0047] Moreover, in the cylinder part 11C, by using a diameter connecting the groove 11T, which is a gap formed between one end surface 14 and the other end surface 15 of the spring receiving part 11B, and a cylinder center O as a center line, each of the bent part locking notch parts 11S1 to 11S5 becomes laterally asymmetrical, and accordingly, the bent parts 13S1 to 13S5 also become asymmetrical as a center line.In this way, by making the parts asymmetrical, only the bent part 13S1 cannot be locked to the bent part locking notch part 11S1, and in this state, the gap part T of the joint at which one end surface 16 and the other end surface 17 positioned in the circumferential direction of the spring contact 130 are opposed to each other is arranged to overlap the joint 11T at which one end surface 14 and the other end surface 15 positioned in the circumferential direction of the spring receiving part 11B are opposed to each other in the radial direction of the center O.

[0048] Therefore, even if other flexures 13S2 to 13S5 are engaged with the flexure locking notch 11S1, incorrect insertion is prevented because any of the other flexures 13S2 to 13S5 cannot be locked with any other flexure locking notch 11S2 to 11S5. Thus, the flexure 13S1 is finally locked with the flexure locking notch 11S1, and accordingly, the gap portion T of the joint between one end surface 16 and the other end surface 17 of the spring contact 130 is located at the joint 11T between one end surface 14 and the other end surface 15 of the spring receiving portion 11B.

[0049] In this way, even if a rotational force is applied to the spring contact 13 for some reason, when the bent portion 13S1 is locked to the bent portion locking notch 11S1, the terminal will not rotate because the movement of the terminal in the rotational direction is restricted. Therefore, there is no case where the gap portion T of the groove of the spring contact 130 is disengaged from the groove 11T of the female terminal and the long flat spring piece 130L is placed on the groove 11T of the female terminal. Accordingly, according to the present invention, there is no case where a spring becomes useless, and all of the springs can be efficiently used as a contact point.

[0050] When the bent portion 13S of the spring contact 13 is locked with the spring bent portion locking notch 11S when the terminal plug is inserted and comes into contact with the spring contact 13, the spring contact 13 causes the bent portion 13S to extend in a rearward direction (the direction of the fastening portion 11K) as a fixing point. At this time, the insertion force does not increase because there is no element restricting the rearward extension of the spring contact 13.

[0051] The fixing part 11K has a U-shape before fixing when viewed from a front view, and by placing a core wire of an electric wire in a U-shaped bottom part and fixing both U-shaped end parts to each other on the inner side by means of a tool, the electric wire is pressed to the fixing part 11K, and the electric wire and the terminal socket main body 11 are electrically connected to each other.

[0052] As in Fig. 1(A), the resin cap 12 is integrally formed into a bottomed cylindrical shape by a synthetic resin, an opening which is an insertion opening 12G of the terminal plug is provided in a bottom part 12B, the locking claw 12A is provided on the inner side of a cylinder part 12C.

[0053] An end portion on the front side (connector insertion side) of the cylindrical portion 11C of the female connector main body 11 abuts against the lower portion 12B. When the lower portion 12B and the end portion of the cylindrical portion 11C abut each other, the bent portion 13S of the spring contact 13, which is locked with the spring bent portion locking notch 11S, is prevented from moving forward (connector insertion side).

[0054] Therefore, a spring-drop-out prevention function when the terminal is released from engagement and a lance locking function are achieved in one housing.

[0055] The insertion hole 12G has substantially the same diameter as that of the male terminal, and after attaching the resin cap 12 to the tip end of the female terminal main body 11, the male terminal is inserted into the female terminal main body 11 via the insertion hole 12G. By applying the taper to the insertion hole 12G, the tip end of the male terminal is smoothly guided into the insertion hole, and the male terminal is likely to be inserted into the female terminal main body 11.

[0056] As in Fig. 1(B), the height of the locking claw 12A is substantially the same as the thickness of the circular ring which is the resin cap holding part 11A (see Fig. 2) of the cylindrical part 11C of the female terminal main body 11. A gentle taper is formed in the end part on the rear side (attachment part 11K), and the locking claw 12A is likely to be fitted into the resin cap holding part 11A of the female terminal main body 11. Moreover, an upright protrusion is formed in the end part on the front side (male terminal insertion side), and the fitted resin cap holding part 11A is not easily detached.

[0057] As in Fig. As illustrated in Fig. 1(B), in the spring contact 13, the metal plate is punched into a perforated plate, in which the plurality of long flat spring pieces 13L, which are gently curved toward the inner side (the middle side when rounded in a cylindrical shape) from both ends to the center part in an arc shape, are connected to each other by connecting parts 13R and 13R at both ends, respectively. During use, the spring contact 13 is used, which is rounded in a cylindrical shape (see Fig. 2).

[0058] Furthermore, according to the present invention, the bending part 13S is formed by performing perpendicular bending from the end part of the connecting part 13R on the front side (terminal plug insertion side) of the spring contact 13 in the radial direction outward. The bending part 13S is connected to the spring bending part locking notch 11S (see Fig. 2) formed in the end part of the male connector insertion side of the cylinder part 11C of the female connector main body 11.

[0059] In addition, the bent part 13S is formed at a plurality of locations (5 locations in the drawing) as described above.

[0060] In other words, in Fig. 3(B), the bent parts 13S1 to 13S5 are formed clockwise from the groove 11T of the spring receiving part 11B, and by using a diameter connecting the groove 11T of the spring receiving part 11B and the cylinder center O as the center line, each of the bent parts 13S1 to 13S5 in the drawing becomes laterally asymmetrical.

[0061] In this way, the gap part T of the joint of the spring contact 130 is arranged at the joint 11T of the spring receiving part 11B by making the parts asymmetrical because the bending part 13S1 is inevitably locked at the bending part locking notch part 11S1.

[0062] Next, a mounting method of the above connector socket 10 will be described.

[0063] First, the spring contact 13 is rounded so that one end surface 16 and the other end surface 17 abut each other, and is inserted into the spring receiving part 11B of the female terminal main body 11 without the spring contact 13 being contracted in the diameter direction.

[0064] At this time, when the gap portion T of the groove of the spring contact 130 is arranged to reach the groove 11T of the spring receiving portion 11B, all of the bending portions 13S can be locked with all of the notch portions 11S configured to lock the spring bending portion. Accordingly, even if a force in the rotational direction is applied to the spring contact 13 housed in the spring receiving portion 11B of the female terminal main body 11, the spring contact 13 is prevented from rotating.

[0065] Subsequently, the resin cap 12 is inserted into the cylindrical portion 11C of the female terminal main body 11, the locking claw 12A of the resin cap 12 engages over the resin cap holding portion 11A of the cylindrical portion 11C, the resin cap 12 and the cylindrical portion 11C are engaged with each other, and the resin cap 12 is engaged with the female terminal main body 11. Accordingly, the bending portion 13S of the spring contact 13 housed in the spring receiving portion 11B of the female terminal main body 11 is locked with the notch portion 11S configured to lock a spring bending portion of the female terminal main body 11, and the bending portion 13S is prevented from moving to the front side (terminal insertion side) and the rear side (fixing portion 11K side).

[0066] As described above, by using a diameter connecting the joint portion of the spring receiving portion and the cylinder center as the centerline, each of the bent-part locking notch portions and the bent-parts in the drawing becomes laterally asymmetrical. Therefore, since all the bent-parts are locked with all the bent-part locking notches, the long flat spring piece of the spring contact is not arranged because the gap portion of the joint of the spring contact is located at the joint of the spring receiving portion.

[0067] Therefore, according to the present invention, there is no case where one spring becomes useless, and all of the springs can be efficiently used as a contact point.

[0068] Furthermore, since the spring contact's bent portion is locked with the notch portion designed to lock the spring contact, the spring contact extends toward the rear (the direction of the fastening portion) using the bent portion as a fixing point when the terminal plug is inserted into the spring contact and comes into contact with it. Therefore, no repulsive force is generated by the spring contact, thus achieving a negative effect of reducing the insertion force of the terminal plug.

[0069] As described above, each of the plurality of bending parts, in which the end portion of the male terminal insertion side of the spring contact is folded outward, is fixed to the laterally asymmetrical notch formed in the end portion of the male terminal main body. In this state, the gap portion of the groove of the cylindrical spring contact is positioned at the groove of the cylinder of the female terminal main body. Therefore, the long flat spring piece of the spring contact is not arranged at the groove portion of the spring receiving portion, and thus, there is no case where any spring becomes useless, and all of the springs can be efficiently used as a contact point.

[0070] Moreover, in the embodiment, the notch formed by notching the end part of the female terminal main body is implemented as the fixing part, however, the present invention is not limited thereto, and a part fixed to the end part of the female terminal main body by a screw or a pin may be employed.

[0071] Moreover, in the embodiment, the bending part in which the end part of the spring contact is folded outward is implemented as a bending part, but the present invention is not limited to this, and a convex part formed to protrude from the inside to the outside at the end part of the spring contact or a part fixed to the end part of the spring contact by inserting a screw from the outside may be employed.

[0072] This application is based on Japanese Patent Application No. 2013-210,432 filed on October 7, 2013. Industrial applicability

[0073] With the present invention, all of the springs can be efficiently utilized as contact points because the long flat spring piece of the cylindrical spring contact is not located at the joint of the cylinder of the female terminal main body. The present invention, which achieves these effects, is advantageous in the field related to the female terminal, in which the cylindrical spring contact, which comes into contact with the corresponding male terminal, is provided in the terminal main body. List of reference symbols 10 connection socket 11 Connector socket main body 11A Resin cap holder 11B Spring retaining part 11C Cylinder part 11H half-cylinder part 11K fastening part 11S Notch part designed to lock the spring bending part 11T joint of the spring receiving part 12 resin cap 12A locking claw 12B lower part 12G insertion opening 13 Spring contact 13L long flat spring piece 13R connecting part 13S bent part T Joint of the spring contact

Claims

[1] Connection socket (10) comprising: a cylindrical terminal socket main body (11) including a terminal plug receiving space formed in an axial direction inside, and a separate cylindrical spring contact (13) containing a long spring piece (13L) inserted into the connector plug receiving space, wherein a bending part (13S) is fixed to a fixing part (11S), wherein the bending part (13S) is formed at an end part of a terminal plug insertion side of the spring contact (13), wherein the fixing part (11S) is formed in an end part of the terminal plug insertion side of the terminal socket main body (11), and wherein in this state, a joint (11T) at which one end face (14) and the other end face (15) positioned in a circumferential direction of the female terminal main body (11) face each other, and a joint (T) at which one end face (16) and the other end face (17) positioned in a circumferential direction of the spring contact (13) face each other are positioned so as to overlap each other in a radial direction, wherein the fixing part (11S) is a notched part formed by notching the end part of the male terminal insertion side of the female terminal main body (11) and is configured to fix the bent part (13S). [2] The terminal socket (10) according to claim 1, wherein a plurality of fixing parts (11S) are provided at a plurality of locations, and a plurality of bending parts (13S) are provided at a plurality of locations, and each of the fixing parts (11S) and the bending parts (13S) is formed to be laterally asymmetrical. [3] The terminal socket (10) according to claim 1, wherein the bending part (13S) is formed by bending the end part of the terminal plug insertion side of the spring contact (13) outwardly.

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