JP2018101577A - Contact terminal and manufacturing method of contact terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact terminal which allows for a good contact state with a board terminal, even if board debris adheres to the end face of the board, without scratches on the surface of the board terminal, and to provide a manufacturing method of a contact terminal.SOLUTION: In a contact terminal 1 including a board terminal connection 2 provided at an end 7a of a board 7, and coming into contact with a board terminal 10 and connecting electrically therewith, the board terminal connection 2 consists of a continuous spring 4 extending continuously from one side 11 of the bottom plate 6 of the contact terminal 1, and when one end 8 abuts on the end 7a and oscillates in the initial state of relative slide operation in the connection direction of the board 7 and the contact terminal 1, the other end 9 comes into contact with the contact terminal 1 while delaying from abutment on the end 7a of the board 7, and a peripheral plate 5 extending continuously from the other side 39 of the bottom plate 6 of the contact terminal 1, and surrounding the continuous spring 4.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a contact terminal for connecting a substrate terminal disposed at an end of a substrate and a conductor such as an electric wire, and a method for manufacturing the contact terminal.

  When connecting a board terminal arranged at an end of a board and a conductor such as an electric wire, a card edge connector as disclosed in Patent Documents 1 and 2 is used. The card edge connector includes a contact terminal and a connector main body that integrally covers the contact terminal. The contact terminal includes a board terminal connection portion and a conductor connection portion.

  The board terminal connecting portion is provided on one side of the contact terminal. The board terminal connecting portion is provided with an elastic contact piece so as to contact the board terminal with a predetermined contact pressure. In the board terminal connecting portion, the board terminal and the elastic contact piece come into contact with each other with a predetermined contact pressure. The conductor connection portion is provided on the other side of the contact terminal. A conductor such as an electric wire is connected to the conductor connecting portion.

  When connecting the card edge connector and the board terminal, the side end of the board is inserted into the board terminal connecting part of the contact terminal by relative sliding movement in the connecting direction of the contact terminal and the board terminal. Then, after the end surface of the side end portion of the substrate comes into contact with the elastic contact piece or the like, the substrate terminal reaches a predetermined position while sliding with respect to the elastic contact piece, and the elastic contact piece and the substrate terminal are connected. The By connecting the elastic contact piece and the substrate terminal, the substrate terminal and the contact terminal are connected, and the substrate terminal and the conductor are connected.

JP 2014-30007 A JP 2014-207055 A

  However, there are cases where so-called “substrate debris” adheres to the end face of the substrate. This “substrate residue” may be due to chipping of the substrate terminal due to terminal insertion, or may be attached to the end surface of the substrate. If such “substrate residue” adheres to the end face of the substrate, the substrate residue may enter between the substrate terminal and the elastic contact piece, and the substrate residue may be bitten. If the substrate residue is caught between the substrate terminal and the elastic contact piece, a good contact surface between the substrate terminal and the elastic contact piece cannot be obtained, and there is a possibility that a good connection cannot be made.

  Further, when the card edge connector and the board terminal are connected, the board terminal is moved to a predetermined position while being rubbed against the elastic contact piece by the slide movement, so that there is a problem that the connection surface of the board terminal is damaged. .

  Accordingly, the present invention provides a contact terminal and a method for manufacturing a contact terminal that enable a good contact state with the substrate terminal even when substrate debris is attached to the end surface of the substrate and that does not cause scratches on the surface of the substrate terminal. For the purpose of provision.

  In order to solve the above-described problems and achieve the object, a first aspect of the present invention is a contact provided with a substrate terminal connection portion that contacts and electrically connects to a substrate terminal provided at an end portion of the substrate. The board terminal connection portion is continuously extended from one side of the bottom plate portion of the contact terminal, and is configured to perform a relative sliding operation in the connection direction between the board and the contact terminal. A continuous spring portion whose one end comes into contact with the end portion in the initial stage and swings so that the other end comes into contact with the substrate terminal after the contact with the end portion, and the other side of the bottom plate portion of the contact terminal And a peripheral plate portion extending continuously from the portion and surrounding the continuous spring portion.

  As a second aspect of the present invention, the continuous spring portion extends from one side portion of the bottom plate portion and is folded to the bottom plate portion side, and continuously from the spring support portion. A swing support portion formed and folded toward the spring support portion; and a swing contact portion formed continuously from the swing support portion and folded toward the swing support portion. The contact portion includes a first contact piece that abuts against the end portion at an initial stage of a relative sliding operation in the connection direction between the substrate and the contact terminal and tilts with the sliding operation, and the first contact piece. The first contact piece is bent at a predetermined angle, swings toward the board terminal side as the first contact piece is tilted, and comes into contact with the board terminal with a delay from contact with the end portion of the first contact piece. A second contact piece that performs relative sliding in the connection direction between the substrate and the contact terminal. Characterized in that it swung by de operation.

  As a third aspect of the present invention, the swing support portion is overlapped with the first contact piece to support the first contact piece, and is overlapped with the second contact piece. And a second support piece for supporting the second contact piece.

  As a fourth aspect of the present invention, the first contact piece is provided at a first arm portion that tilts in contact with the end portion by the sliding operation, and a tip portion of the first arm portion. The second contact piece is formed with a first contact end that comes into contact with the substrate, and the second contact piece swings toward the substrate terminal as the first arm portion tilts; The second arm portion is moved toward the substrate terminal side by the swinging of the second arm portion, and comes into contact with the substrate terminal after the contact of the first contact end with the substrate. And a second contact end.

  As a fifth aspect of the present invention, the peripheral plate portion is formed by a pair of side plate portions covering both sides of the continuous spring portion and a top plate portion facing the bottom plate portion and connecting the pair of side plate portions. And the top plate portion has a first contact opening at which one end of the continuous spring portion is exposed to the outside of the peripheral plate portion, and a second contact portion at which the other end of the continuous spring portion is exposed to the outside of the peripheral plate portion. Two contact openings are provided.

  According to a sixth aspect of the present invention, there is provided a board insertion position stopper which is formed by being bent outward from the peripheral edge of the first contact opening and determines the slide position of the board terminal by contacting the board terminal. In addition, there is provided a restricting portion having a restricting plate for restricting a tilt position where the first contact piece tilts in contact with an end portion of the substrate terminal.

  According to a seventh aspect of the present invention, there is provided a substrate terminal connection portion that contacts and electrically connects to a substrate terminal provided at an end portion of the substrate, and the substrate terminal connection portion is continuously formed from the bottom plate portion. A contact terminal comprising a continuous spring portion and a peripheral plate portion surrounding the continuous spring portion, wherein the contact plate has a bottom plate portion and one side of the bottom plate portion in a deployed state from a thin spring material. The continuous spring part that is continuous from the part and the peripheral plate part that is continuous from the other side opposite to the continuous spring part across the bottom plate part are formed by punching, and the continuous spring part is the side part of the bottom plate part in the unfolded state. A spring support portion that is continuous from the spring support portion, a swing support portion that is continuous from the spring support portion, and a swing contact portion that is continuous from the swing support portion are formed by punching, and the spring support portion is folded to the bottom plate portion side. Later, the swing support part is folded to the spring support part side, and the swing contact Is folded to the spring support portion side, and the spring support portion, the swing support portion, and the swing contact portion are folded, and a relative sliding operation in the connecting direction between the substrate and the contact terminal is performed. Initially, one end of the swing contact portion abuts on the end portion and swings, so that the other end contacts the substrate terminal with a delay from the contact with the substrate, and the swing support portion and the swing contact portion. The movable contact portion is bent, and the peripheral plate portion is bent so as to surround the bent spring support portion, the swing support portion, and the swing contact portion to form the substrate terminal connection portion. A method for manufacturing a contact terminal.

  In the contact terminal according to the present invention, one end of the continuous spring portion comes into contact with the end surface of the substrate and tilts at the initial stage of the relative sliding operation between the substrate and the contact terminal. When one end of the continuous spring portion tilts, one end contacts the substrate terminal. When one end of the continuous spring portion contacts the substrate terminal, the other end of the continuous spring portion swings toward the substrate terminal side. When the other end of the continuous spring portion swings toward the substrate terminal side, the other end contacts the substrate terminal with a delay from the contact of one end of the continuous spring portion with the substrate terminal. As a result, the other end of the continuous spring portion does not bite even if the debris from the end face of the substrate due to terminal insertion and the substrate debris on the end face of the substrate are attached, and a good contact state with the substrate terminal is obtained.

  In addition, the continuous spring portion does not rub against the substrate terminal because the other end contacts the substrate terminal behind the contact of the one end of the continuous spring portion with the substrate. Since the other end of the continuous spring portion does not rub against the substrate terminal, the surface of the substrate terminal is not damaged by the sliding operation in the direction in which the contact terminal and the substrate terminal are connected. Moreover, even if the one end of a continuous spring part and a board | substrate contact, the one end of a continuous spring part or a board | substrate terminal is processed so that one end of a continuous spring part and a board | substrate terminal may not contact, 1st contact It is also possible to prevent the piece and the substrate terminal from being rubbed by the sliding operation.

FIG. 1 is a side view of a contact terminal according to an embodiment of the present invention, partially broken away. 2A and 2B show a contact terminal according to an embodiment of the present invention, wherein FIG. 2A is a cross-sectional view taken along line 2A-2A in FIG. 1, and FIG. 2B is taken along line 2B-2B in FIG. Sectional drawing which cut | disconnected. FIG. 3 is a plan view showing a contact terminal according to an embodiment of the present invention. FIG. 4 is a side view showing the contact terminal according to the embodiment of the present invention. FIG. 5 is a front view showing a contact terminal according to an embodiment of the present invention. FIG. 6 is a developed plan view of the developed contact terminal according to the embodiment of the present invention. (A) is a side view showing a state immediately before the end of the board terminal comes into contact with the first contact end, and (b) shows the end of the board terminal in contact with the first contact end and the second contact end becomes the board terminal. The side view which shows the state which contacted. FIG. 8 shows the movement of the swing contact portion when the contact terminal and the substrate terminal according to the embodiment of the present invention are connected, and the swing state of the second contact piece when the first contact piece swings FIG.

  Hereinafter, a contact terminal and a method for manufacturing the contact terminal according to an embodiment of the present invention will be described.

[Embodiment of contact terminal]
The contact terminal 1 which concerns on embodiment of this invention is demonstrated using FIGS. As shown in FIGS. 1, 3, and 4, the contact terminal 1 is elongated along a predetermined direction (hereinafter referred to as “longitudinal direction”) L. The contact terminal 1 includes a substrate terminal connection portion 2, a restriction portion 3, and a conductor connection portion 43 that are provided in order along a predetermined direction L.

  As shown in FIGS. 1, 3, and 4, the board terminal connection portion 2 is formed of a continuous spring portion 4 and a peripheral plate portion 5 that surrounds the continuous spring portion 4. The continuous spring portion 4 is continuously extended in a direction orthogonal to the longitudinal direction L from one side portion (see FIG. 6) 11 of the bottom plate portion 6 of the contact terminal 1. Then, at the initial stage of the relative sliding operation in the connection direction between the substrate 7 and the contact terminal 1, the one end 8 comes into contact with the end portion 7a and swings, thereby delaying from the contact with the end portion 7a of the substrate 7. The other end 9 contacts the board terminal 10. The peripheral plate portion 5 is continuously extended from the other side portion (see FIG. 6) 39 of the bottom plate portion 6 of the contact terminal 1. Hereinafter, the continuous spring part 4 is demonstrated in detail using FIGS. 1-5 which show the shape | molded contact terminal 1, and FIG. 6 which shows the contact terminal 1 of an expansion | deployment state.

[Continuous spring part]
The continuous spring portion 4 includes a spring support portion 12, a swing support portion 13, and a swing contact portion 14. The spring support portion 12 extends from one side portion (see FIG. 6) 11 of the bottom plate portion 6 and is folded toward the bottom plate portion 6 side. The swing support portion 13 is formed continuously from the spring support portion 12 and is folded toward the spring support portion 12 side. The swing contact portion 14 is formed continuously from the swing support portion 13 and is folded to the swing support portion 13 side. The continuous spring portion 4 includes a spring support portion 12, a swing support portion 13, and a swing contact portion 14 that continuously extend from one side 11 of the bottom plate portion 6 in a direction orthogonal to the longitudinal direction L. It is installed and formed in a twisted manner.

  As shown in FIG. 6, the spring support portion 12 is composed of a primary folding portion 15, an overlapping support plate portion 16, and a secondary folding portion 17. The primary folded portion 15 extends from one side portion 11 of the bottom plate portion 6 and is folded to the bottom plate portion 6 side. The overlapping support plate portion 16 extends from the primary folding portion 15 along the side of the bottom plate portion 6 toward the rear end portion side (regulating portion 3 side) of the contact terminal 1. Further, the overlapping support plate portion 16 is overlapped with the primary folding portion 15 toward the bottom plate portion 6 side. The secondary folded portion 17 extends from the front end side of the overlapping support plate portion 16 in a direction orthogonal to the longitudinal direction L of the bottom plate portion 6. A swing support portion 13 extends from the distal end side of the secondary folding portion 17.

  The swing support part 13 includes a first support piece 18, a second support piece 19, and a tertiary folding part 20. The first support piece 18 extends from the central portion connected to the secondary folding portion 17 to the one side (regulating portion 3 side) along the bottom plate portion 6. The second support piece 19 extends from the central portion connected to the secondary folding portion 17 to the other side (the opposite side of the restriction portion 3) along the bottom plate portion 6.

  The first support piece 18 is formed by a first arm support portion 21 and a contact end support portion 22. The first arm support portion 21 has a long rectangular shape and extends from the secondary folding portion 17 to the regulating portion 3 side. The first support piece 18 supports a first contact piece 24 described later. The contact end support portion 22 is provided at the distal end portion of the first arm support portion 21. The contact end support portion 22 supports a first contact end 27 described later. The second support piece 19 has a long rectangular shape and supports a second contact piece 25 described later.

  The first support piece 18 and the second support piece 19 are bent in an inverted mountain shape at a bending point 23 where the first support piece 18 and the second support piece 19 are continuous. The folding point 23 is located closer to the primary folding portion 15 than the secondary folding portion 17. A swing contact portion 14 extends from the tertiary folded portion 20.

  The swing contact portion 14 is formed of a first contact piece 24 and a second contact piece 25. The first contact piece 24 has a long rectangular shape, and extends from the tertiary folded part 20 to the one side (regulating part 3 side) along the bottom plate part 6 and in parallel with the first support piece 18. The first contact piece 24 is formed longer than the contact end support portion 22 of the first support piece 18. The first contact piece 24 is formed by a first arm portion 26, a first contact end (one end) 27, and a contact end 28. The first arm portion 26 is brought into contact with the end portion 7 a of the substrate 7 and tilted by the sliding operation of the substrate 7. The first contact end (one end) 27 is provided on the regulation part 3 side of the first arm part 26. The first contact end (one end) 27 is in contact with the substrate terminal 10 of the substrate 7. The contact end 28 is formed by bending the distal end portion of the first contact end 27 toward the bottom plate portion 6 side.

  The second contact piece 25 is formed by the second arm portion 29, the second contact end 30, and the bent end 31. The second arm portion 29 has a long rectangular shape and extends from the tertiary folded portion 20 along the bottom plate portion 6 to the opposite side of the restricting portion 3. Further, the second arm portion 29 is formed longer than the second support piece 19 in parallel with the second support piece 19. The second support piece 19 swings toward the substrate terminal 10 as the first arm portion 26 tilts.

  The second contact end (other end) 30 is provided on the distal end side of the second arm portion 29. The second contact end (the other end) 30 approaches the substrate terminal 10 side by the swing of the second arm portion 29 and contacts the substrate terminal 10 with a delay from the contact of the first contact end 27 to the substrate terminal 10. . The bent end 31 is formed by bending the distal end portion of the second contact end 30 to the bottom plate portion 6 side.

  The first arm portion 26 and the second arm portion 29 are bent in an inverted mountain shape at a bending point 23 where the first arm portion 26 and the second arm portion 29 are continuous. The bending point 23 is also a bending point where the first support piece 18 and the second support piece 19 are bent. The first arm portion 26 is supported in close contact with the first support piece 18. Further, the second arm portion 29 is supported in close contact with and overlaid on the second support piece 19.

  In the swing contact portion 14, the first contact end (one end) 27 comes into contact with the end portion 7 a of the substrate 7 in the initial stage of the relative sliding operation in the connection direction between the substrate 7 and the contact terminal 1. The first contact piece 24 tilts. As the first contact piece 24 tilts, the second contact piece 25 swings toward the substrate terminal 10, and swings with a delay from the contact of the first contact piece 24 with the end portion 7 a of the substrate 7. The second contact end (other end) 30 comes into contact. Further, as the first contact piece 24 and the second contact piece 25 swing, the first support piece 18 and the second support piece 19 also swing. The first contact piece 24, the second contact piece 25, the first support piece 18, and the second support piece 19 swing in an interior 32 surrounded by the peripheral plate portion 5.

  The peripheral plate portion 5 is formed by a pair of side plate portions 33 and 34 that cover both sides of the continuous spring portion 4 and a top plate portion 35 that faces the bottom plate portion 6 and connects the pair of side plate portions 33 and 34. The top plate portion 35 includes a first contact opening 36 where the first contact end (one end) 27 of the continuous spring portion 4 is exposed to the outside of the peripheral plate portion 5, and a second contact end (the other end) of the continuous spring portion 4. ) 30 is exposed to the outside of the peripheral plate portion 5 and a second contact opening 37 is provided.

  A front closing piece 38 is formed on the top plate portion 35 on the tip side of the contact terminal 1 (opposite side of the restricting portion 3). The front closing piece 38 is overlapped with a side wall 6 a formed by bending the front end side of the bottom plate portion 6 to close the front side of the contact terminal 1. The side plate portion 33 extends from the other side portion 39 of the bottom plate portion 6, and the side plate portion 34 is continuously formed on the opposite side across the top plate portion 35.

  The restricting portion 3 includes a side plate 40 continuously formed from one side portion 11 of the bottom plate portion 6 and facing the side plate portion 33, and a restricting plate 41 formed by bending the side plate 40 to the side plate portion 33 side at a right angle. It consists of The regulating plate 41 abuts the abutting end 28 of the swinging first contact piece 24. Further, a substrate insertion position stopper 42 that is bent toward the outside of the peripheral plate portion 5 is formed at the opening edge portion of the first contact opening 36 of the top plate portion 35. The substrate insertion position stopper 42 abuts the end 7a of the substrate 7 that slides.

  The conductor connecting portion 43 is formed by an electric wire holding portion 44 that holds an electric wire as a conductor and a core wire caulking connecting portion 45 that caulks and connects the core wires of the electric wires. The electric wire holding portion 44 is formed of a bottom plate portion 46 and a pair of side plate portions 47 and 48 that rise in the same direction from both side portions of the bottom plate portion 46. The core wire crimping connection portion 45 is formed by a bottom plate portion 46 extending from the bottom plate portion 6 of the electric wire holding portion 44 and a pair of side plate portions 49 and 50 rising from both side portions of the bottom plate portion 46.

  The side plate portions 47 and 48 of the electric wire holding portion 44 are bent in the direction approaching each other and wound around the outer periphery of the electric wire to hold the end of the electric wire. The side plate portions 49 and 50 of the core wire crimping connection portion 45 are bent in directions approaching each other, and the core wire is crimped to the bottom plate portion 46 side to electrically connect the electric wire and the contact terminal.

  Next, a method for manufacturing the contact terminal 1 will be described. FIG. 6 shows a developed state of the contact terminal 1. In the following description, each part of the contact terminal 1 in the unfolded state will be described with the reference numerals of the parts of the contact terminal 1 after the bending shown in FIGS.

  As shown in FIG. 6, the contact terminal 1 is formed by punching out the contact terminal 1 in an unfolded state from a long strip-shaped thin plate spring material. On the contact terminal 1 in the unfolded state that is punched and formed, a bottom plate portion 6, a continuous spring portion 4, and a peripheral plate portion 5 are formed in the unfolded state. The bottom plate portion 6 is formed along the width direction (longitudinal direction L) of the long strip-shaped thin plate spring material. The continuous spring portion 4 is formed continuously from one side portion (one side portion in a direction orthogonal to the longitudinal direction L) 11 of the bottom plate portion 6. The peripheral plate portion 5 is formed continuously from the other side portion 39 (the other side portion 39 in the direction orthogonal to the longitudinal direction L) on the opposite side of the continuous spring portion 4 with the bottom plate portion 6 interposed therebetween. . In addition, the restriction portion 3 and the conductor connection portion 43 are simultaneously punched and formed in the unfolded contact terminal 1 in the unfolded state.

  The continuous spring portion 4 punched and formed in the unfolded state includes a spring support portion 12, a swing support portion 13, and a swing contact portion 14 formed in the unfolded state. It is formed continuously from the primary folded portion 15 of the side portion 11. The swing support portion 13 is formed continuously from the secondary folding portion 17. The swing contact portion 14 is formed continuously from the tertiary folding portion 20. In FIG. 6, reference numeral 51 denotes a carrier for sequentially sending the contact terminals 1 in an unfolded state to a plurality of continuously arranged molds when the contact terminals 1 are punched from a belt-shaped spring material.

  Then, the contact terminal 1 punched in the unfolded state has the spring support portion 12 bent from the primary folding portion 15 to the bottom plate portion 6 side, folded on the bottom plate portion 6, and swung from the secondary folding portion 17. The support portion 13 is bent toward the overlapping support plate portion 16 side. Further, the swing contact portion 14 is bent from the tertiary folding portion 20 to the spring support portion 12 side, and is tightly folded on the spring support portion 12. Thereby, the spring support part 12, the rocking | fluctuation support part 13, and the rocking | fluctuation contact part 14 are folded by the secondary folding part 17 and the tertiary folding part 20 in what is called a crooked state.

  Further, at the intermediate portion of the overlap support plate portion 16, the secondary folding portion 17 and the tertiary folding portion 20 are bent in a direction away from the bottom plate portion 6. That is, the secondary folded portion 17 and the tertiary folded portion 20 are inclined with respect to the bottom plate portion 6. Further, the second support piece 19 is bent from the bending point 23 in a direction away from the bottom plate portion 6 with respect to the first support piece 18. Similarly, the tertiary folding portion 20 is bent in a direction away from the bottom plate portion 6 with respect to the overlapping support plate portion 16, and the first contact piece 24 of the swing contact portion 14 is also bent in a direction away from the bottom plate portion 6. The second contact piece 25 is bent from the bending point 23 in a direction away from the bottom plate portion 6 with respect to the first contact piece 24. Thereby, the rocking | fluctuation support part 13 and the rocking | fluctuation contact part 14 are shape | molded by the inverted mountain shape, and the continuous spring part 4 is formed.

  In addition, the spring support portion 12, the swing support portion 13, and the swing contact portion 14 are bent and formed at the same time, and at the same time, the contact end 18 of the first contact piece 24 and the bent end 31 of the second contact piece 25 are also bent and formed. Is done.

  Next, after bending the side plate 40 of the restriction portion 3 from the one side portion 11 of the bottom plate portion 6 to the bottom plate portion 6 side and at a right angle to the bottom plate portion 6, the restriction plate 41 at the end of the side plate 40 is It is bent at a right angle so as to face the bottom plate portion 6. When the contact terminal 1 in the developed state is punched and formed, the top plate portion 35 of the peripheral plate portion 5 is provided with a rectangular first contact opening 36 and a rectangular second contact opening 37. By the above procedure, the continuous spring portion 4 and the restriction plate 41 of the restriction portion 3 are formed, and the peripheral plate portion 5 extending from the other side portion 39 of the bottom plate portion 6 is formed.

  In the peripheral plate portion 5, the side plate portion 34 outside the top plate portion 35 is bent at a right angle with respect to the top plate portion 35, and the side plate portion 33 on the bottom plate portion 6 side of the top plate portion 35 is bent with respect to the top plate portion 35. It is bent at a right angle, that is, so that the top plate portion 35 is located on the bottom plate portion 6 side. From this state, the peripheral plate portion 5 is bent so that the top plate portion 35 faces the bottom plate portion 6 from the other side portion 39 of the bottom plate portion 6. As a result, the continuous spring portion 4 and the regulation plate 41 are accommodated in the interior 32 surrounded by the side plate portions 33 and 34 and the top plate portion 35.

  In a state where the continuous spring portion 4 is accommodated in the interior 32 surrounded by the peripheral plate portion 5, the first contact end (one end) 27 is the first contact of the top plate portion 35 as shown in FIGS. 1 and 3. The second contact end (other end) 30 protrudes from the opening 36 to the outside of the peripheral plate portion 5, and is exposed to the outside of the peripheral plate portion 5 from the second contact opening 37 of the top plate portion 35. The first contact end (one end 8) 27 is located outside from the inside 32 of the peripheral plate portion 5, and the second contact end (the other end 9) 30 is located inside the peripheral plate portion 5.

  The conductor connecting portion 43 is formed by bending the side plate portions 47, 48, 49, and 50 from both sides of the bottom plate portion 6 simultaneously with the formation of the continuous spring portion 4 and the peripheral plate portion 5. As described above, the contact terminal 1 is formed by being bent from the developed state.

  Next, a procedure for connecting the contact terminal 1 and the substrate terminal 10 by bringing the substrate terminal 10 of the substrate 7 into contact with the contact terminal 1 and the movement when the second contact piece 25 contacts the substrate terminal 10 are shown in FIG. This will be described with reference to a) and (b). The contact terminal 1 is accommodated in a terminal accommodating chamber 54 provided in the connector main body 53 of the connector 52 so that the top plate portion 35 is exposed toward the board fitting chamber 55 provided in the connector main body 53. Is arranged.

  As shown in FIG. 7A, the board 7 is slid into the board fitting chamber 55 of the connector main body 53 in the direction of arrow A, and the end 7a of the board 7 is inserted into the first contact end 27 (one end). 8). Further, when the substrate 7 is slid into the substrate fitting chamber 55, the first contact piece 24 is tilted counterclockwise in FIG. 7A around the bending point 23 (as a fulcrum). When the first contact piece 24 is tilted counterclockwise in FIG. 7A, the second contact piece 25 is centered on the bending point 23 (as a fulcrum), as shown in FIG. The second contact end 30 (the other end 9) comes into contact with the board terminal 10 after the piece 24. Thereby, the substrate terminal 10 and the contact terminal 1 are electrically connected.

  In a state where the second contact end 30 is in contact with the substrate terminal 10, the second contact end 30 is in contact with the substrate terminal 10 with a predetermined contact pressure. That is, as shown in FIG. 8, if the first contact piece 24 is swung and tilted in a state where the substrate 7 is not inserted into the substrate fitting chamber 55, the second contact is made as the first contact piece 24 tilts. The contact piece 25 tilts. When the second contact piece 25 is tilted, the second contact end 30 protrudes outward from the peripheral plate portion 5 from the second connection opening 37. For this reason, when the substrate 7 is inserted into the substrate fitting chamber 55, the second contact piece 25 is bent with respect to the first contact piece 24 until the second contact end 30 is positioned in the inside 32 of the peripheral plate portion 5. Therefore, the second contact end 30 is pressed against the board terminal 10 by this bending.

Further, the first contact piece 24 that tilts in contact with the end portion 7 a of the substrate 7 is positioned by regulating the tilting position of the first contact piece 24 when the contact end 28 contacts the restriction plate 41. Further, the board 7 is inserted into the board fitting chamber 55 and the end portion 7a abuts against the board insertion position stopper 42, whereby the insertion position of the board 7 into the board fitting chamber 55 is determined.
[Effect of this embodiment]

  As described above, according to the contact terminal 1 according to the present embodiment, the first contact end 27 (one end 8) is the end portion of the substrate 7 at the initial stage of the relative sliding operation between the substrate 7 and the contact terminal 1. 7a is brought into contact with the board terminal 10 while being tilted. Then, the second contact end 30 (the other end 9) swings toward the substrate terminal 10 and comes into contact with the substrate terminal 10 with a delay from the contact of the first contact end 27 (the one end 8) with the substrate terminal 10. Thereby, the second contact end 30 (the other end 9) does not bite even if the substrate end face is scraped by inserting a terminal and the substrate 7 is attached to the end 7a of the substrate 7. Therefore, a good contact state between the second contact end 30 and the substrate terminal 10 is obtained.

  Further, the second contact end 30 (the other end 9) comes into contact with the substrate terminal 10 after the contact of the first contact end 27 (the one end 8) with the substrate 7 is delayed. As a result, the substrate terminal 10 is not rubbed, and the surface of the substrate terminal 10 is not damaged by the sliding operation in the direction in which the contact terminal 1 and the substrate terminal 10 are connected. Further, by processing the first contact end 27 (one end 8) or the substrate terminal 10, the first contact piece 24 and the substrate terminal 10 can be prevented from being rubbed by the sliding operation.

  Further, in the contact terminal 1 according to the present embodiment, the continuous spring portion 4 is formed by the spring support portion 12, the swing support portion 13, and the swing contact portion 14 folded on the bottom plate portion 6. The swing support portion 13 and the swing contact portion 14 are formed in a twisted manner. Thereby, the continuous spring part 4 becomes what is called a floating structure. That is, the contact terminal 1 according to the present embodiment does not have a column portion that serves as a swing fulcrum of the swing support portion 13 and the swing contact portion 14. The continuous spring portion 4 has a structure that is swingably supported by a spring support portion 12 folded on the bottom plate portion 6.

  In addition, since the continuous spring portion 4 is formed from the one side portion 11 of the bottom plate portion 6, the width of the material for forming the contact terminal 1 is not increased, and the material removal can be improved. That is, in general, in the case of a so-called horizontal chain terminal, in order to form a terminal, one unfolded terminal is punched in the width direction from the strip-shaped plate material, and this unfolded terminal is continuously formed in the longitudinal direction of the strip-shaped plate material To do. Thereafter, the punched-out terminal is bent and formed step by step.

  At this time, if the continuous spring portion 4 is formed continuously from the bottom plate portion 6 of the terminal, the width of the strip-shaped plate material is increased. However, in the contact terminal 1 of the present embodiment, the continuous spring portion 4 extends from one side portion 11 of the bottom plate portion 6. For this reason, it is not necessary to enlarge the width dimension of a strip | belt-shaped board | plate material, and the material removal of the contact terminal 1 can be improved.

  In addition, the contact terminal 1 according to the present embodiment is in close contact with the first contact piece 24 and the second contact piece 25 of the swing contact portion 14 and overlaps the first support piece 18 and the second support piece 19. For this reason, the contact pressure of the second contact end 30 to the substrate terminal 10 can be set to a predetermined contact pressure. That is, since the thickness of the spring material forming the contact terminal 1 is set to be lighter and thinner from the standpoint of manufacturing, the substrate terminal 10 of the second contact end 30 can be formed only by the first contact piece 24 and the second contact piece 25. A predetermined contact pressure cannot be obtained. However, a predetermined contact pressure can be obtained by closely overlapping the first support piece 18 and the second support piece 19 on the lower surface side of the first contact piece 24 and the second contact piece 25. In this case, by changing the sizes of the first support piece 18 and the second support piece 19, the contact pressure of the first contact piece 24 and the second contact piece 25 to the substrate terminal 10 can be adjusted. Accordingly, the first support piece 18 and the second support piece 19 function as a backup spring.

  Since the contact terminal 1 according to the present embodiment surrounds the continuous spring portion 4 with the peripheral plate portion 5, since no external force is inadvertently applied to the continuous spring portion 4, deformation due to the inadvertent external force is prevented. be able to. For example, when the board 10 inserted into the connector 52 is inserted into the board fitting chamber 55 in a so-called twisted state, an external force is applied to the contact terminal 1 from the board 10. However, since the continuous spring portion 4 is surrounded by the peripheral plate portion 5, no external force is applied to the continuous spring portion 4. Even when a tool or the like is inserted into the board fitting chamber 55, the continuous spring portion 4 is not deformed because the continuous spring portion 4 is surrounded by the peripheral plate portion 5.

  In the contact terminal 1 according to the present embodiment, the oscillating support portion 13 and the oscillating contact portion 14 are continuously folded from the spring support portion 12 to form the continuous spring portion 4, which corresponds to a fulcrum support portion. It has a so-called floating structure with no part. Thereby, the spring force of the continuous spring part 4 can be adjusted by setting the rocking | fluctuation support part 13 to two or more layers. When the swing support portion 13 is set to have two or more layers, the continuous spring portion 4 is not continuously formed in the longitudinal direction L of the bottom plate portion 6, so that a portion continuous from the bottom plate portion 6 becomes long in the unfolded state. There is no. As a result, it is not necessary to increase the width of the long belt-like spring material, and material removal can be improved.

  As described above, in the contact terminal 1 according to the present embodiment, the continuous spring portion 4 is formed continuously from the one side portion 11 and formed by twisting. For this reason, the spring length of the continuous spring part 4 can be shortened. And when bending the continuous spring part 4, a shut height can be made low. Since the shut height can be lowered, the stamping speed of the mold at the time of molding can be increased, the tact time of molding can be shortened, and the productivity can be improved.

  Further, the contact terminal 1 of the present embodiment satisfies the requirements of terminal robustness, waterproof rubber plug passage property, vibration resistance, and high contact pressure, and is therefore suitable for a card edge connector of an automotive ECU. Therefore, it can be mounted on automobiles. That is, the terminal mounted on the automobile is required to satisfy at least the following requirements.

a. The terminal shall be a box-type body and the contacts shall not be exposed.
b. The terminal connected to the terminal of the harness must be robust against the weight of the harness for the automobile, and the plate thickness of the spring material needs to be 0.2 mm or more.
c. In order to obtain waterproofness as a connector for automobiles, the terminal must be easy to pass through a waterproof rubber packing attached to the connector.
d. The projected cross section in the axial direction of the terminal must be approximate to the external dimension of the electric wire to be connected, because the terminal should not be able to pass through the waterproof rubber packing. It is desirable that the outer shape of the terminal is inscribed in the outer diameter of the cross section of the electric wire.
e. In order to obtain the vibration resistance of the automobile, it must not resonate with vibrations at 50 Hz to 200 Hz.
f. The vehicle must be resistant to slight vibrations, that is, vibrations when the vehicle starts and stops, vibrations caused by road surface unevenness, and vibrations generated by the engine.
g. The contact pressure between the terminal and the substrate terminal should be close to 4.9 N when the terminal is a tin-plated contact.

  Furthermore, in addition to the above requirements, the terminal contact point should not touch the board terminal at the initial stage of insertion into the board connector as a card edge connector. As a result, the contact structure of the card edge connector for automobiles is A so-called seesaw structure is desirable. In general terminals, there are many structures in which the contact point hits the end face of the substrate from the initial insertion of the substrate.

  Japanese Patent No. 5922295 proposes a contact structure of a terminal with a seesaw structure. In this prior application patent, a continuous spring portion is formed continuously to a fulcrum support portion extending from one side in the longitudinal direction of the bottom plate portion, and the continuous spring portion swings around the fulcrum support portion by a sliding operation of the substrate. It is a structure to do. In this structure, the pressure applied to the continuous spring by the pressure applied by the sliding movement of the board terminal is received by the fulcrum support column.

  On the other hand, in the contact terminal 1 according to the present embodiment, the continuous spring portion 4 is formed by twisting the swing support portion 13 and the swing contact portion 14 from the spring support portion 12. There is no portion corresponding to the column portion, and the swing support portion 13 and the swing contact portion 14 have a so-called floating structure. Thereby, since the continuous spring part 4 is not continuously formed from the one side of the longitudinal direction of the baseplate part 6, the contact terminal 1 of this Embodiment can improve material taking as mentioned above.

  In the embodiment described above, the overlap support plate portion 16 is extended from the primary folding portion 15 toward the rear end side (conductor connection portion 43 side) of the contact terminal 1. Even if the plate portion 16 extends toward the front end side of the contact terminal 1 (opposite side of the conductor connection portion 43), the swing support portion 13 and the swing contact portion 14 extend from the secondary folding portion 17. good.

  In the above-described embodiment, the swing support portion 13 is formed by the single swing support portion 13 including the first support piece 18 and the second support piece 19 continuous thereto. Two or more 13 may be provided.

  Further, in the above embodiment, the restriction plate 41 of the restriction portion 3 is formed by bending the side plate 40 extending from the one side portion 11 of the bottom plate portion 6, but may be formed by cutting and raising from the bottom plate portion 6. good.

  Although the embodiments of the present invention have been disclosed as described above, it is obvious that those skilled in the art can make changes without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the following claims.

  INDUSTRIAL APPLICABILITY The present invention can be used for household appliances, industrial equipment, robots, computers and peripheral devices, communication base stations, automobiles, and the like that use substrates, and in particular, automobiles that particularly require reliability against “vibration” and “squeeze”. It is suitable for industrial equipment, and can be used for all “card edge connectors” that are in direct contact with a substrate.

DESCRIPTION OF SYMBOLS 1 Contact terminal 2 Board | substrate terminal connection part 3 Control part 4 Continuous spring part 5 Peripheral board part 6 Bottom board part 7 Board | substrate 7a End part 8 One end (1st contact end 27)
9 Other end (second contact end 30)
DESCRIPTION OF SYMBOLS 10 Board terminal 11 One side part 12 Spring support part 13 Swing support part 14 Swing contact part 18 1st support piece 19 2nd support piece 24 1st contact piece 25 2nd contact piece 26 1st arm part 27 1st contact end 29 2nd arm part 30 2nd contact end

Claims (7)

A contact terminal provided with a board terminal connection part for contacting and electrically connecting to a board terminal provided at an end of the board,
The board terminal connection portion is continuously extended from one side of the bottom plate portion of the contact terminal, and one end of the board terminal connection portion is at an initial stage of a relative sliding operation in the connection direction between the board and the contact terminal. A continuous spring portion that comes into contact with the end portion and oscillates so that the other end comes into contact with the substrate terminal after being brought into contact with the end portion;
A contact terminal comprising: a peripheral plate portion extending continuously from the other side portion of the bottom plate portion of the contact terminal and surrounding the continuous spring portion. The continuous spring part extends from one side of the bottom plate part and is folded to the bottom plate part side; and
A swing support part formed continuously from the spring support part and folded to the spring support part side;
A swing contact portion formed continuously from the swing support portion and folded to the swing support portion side;
The swing contact portion is in contact with the end portion at an initial stage of a relative sliding operation in the connecting direction between the substrate and the contact terminal, and the first contact piece is tilted with the sliding operation; The contact piece is bent at a predetermined angle, and swings toward the substrate terminal as the first contact piece tilts, and is delayed from the contact of the first contact piece with the end of the substrate. The contact terminal according to claim 1, further comprising a second contact piece that contacts the substrate terminal, wherein the contact terminal swings by a relative sliding operation in a connection direction between the substrate and the contact terminal.   The swing support part is overlapped with the first contact piece to support the first contact piece, and the second support piece is overlapped with the second contact piece to support the second contact piece. The contact terminal according to claim 2, comprising a piece. The first contact piece is provided at a first arm portion that tilts in contact with the end portion of the substrate by the sliding operation, and a first arm portion that is provided at a tip portion of the first arm portion and contacts the substrate. Formed with one contact end,
The second contact piece is provided on the second arm portion that swings toward the substrate terminal as the first arm portion tilts, and the second arm portion is provided on the second arm portion. 3. A second contact end that comes closer to the substrate terminal side by swinging the first portion and comes into contact with the substrate terminal with a delay from contacting the substrate with the first contact end. Or the contact terminal of Claim 3. The peripheral plate portion is formed of a pair of side plate portions that cover both sides of the continuous spring portion, and a top plate portion that faces the bottom plate portion and connects the pair of side plate portions,
The top plate portion includes a first contact opening at which one end of the continuous spring portion is exposed to the outside of the peripheral plate portion, and a first contact opening at which the other end of the continuous spring portion is exposed to the outside of the peripheral plate portion. The contact terminal according to any one of claims 1 to 4, wherein a two-contact opening is provided.   A board insertion position stopper formed by bending the edge of the first contact opening to the outside of the peripheral plate part and determining the sliding position of the board terminal by contacting the board terminal; and the first contact piece comprises the board terminal The contact terminal according to claim 5, further comprising a restricting portion having a restricting plate for restricting a tilting position that is tilted in contact with the end of the contact. A continuous spring portion provided with a substrate terminal connection portion that is in contact with and electrically connected to a substrate terminal provided at an end portion of the substrate, the substrate terminal connection portion being formed continuously from the bottom plate portion, and the continuous spring portion A manufacturing method of a contact terminal comprising a peripheral plate portion surrounding
From the spring material of the thin plate, in a deployed state, the bottom plate portion of the contact terminal, the continuous spring portion continuous from one side portion of the bottom plate portion, and the other side portion on the opposite side of the continuous spring portion across the bottom plate portion A continuous peripheral plate portion is formed by punching,
In the unfolded state, the continuous spring portion is stamped by a spring support portion that continues from one side of the bottom plate portion, a swing support portion that continues from the spring support portion, and a swing contact portion that continues from this swing support portion. Formed,
After the spring support part is folded to the bottom plate part side, the swing support part is folded to the spring support part side, and the swing contact part is folded to the spring support part side, and the spring support part , The swing support portion, the swing contact portion is folded,
One end of the oscillating contact portion abuts on the end portion and oscillates at the initial stage of the relative sliding operation in the connecting direction between the substrate and the contact terminal, and so on. The swing support portion and the swing contact portion are bent so that the end contacts the substrate terminal,
The contact terminal, wherein the board terminal connecting portion is formed by bending the peripheral plate portion so as to surround the bent spring support portion, the swing support portion, and the swing contact portion. Manufacturing method.