JP6613129B2 - Metal terminal - Google Patents

Description

  The present disclosure relates to a metal terminal.

  Conventionally, a metal terminal made of a conductive metal is used to electrically connect each part of an electric device, an electronic device and the like. And in order to prevent the unnecessary fitting cancellation | release of the metal terminals which mutually fitted, the retaining structure is employ | adopted (for example, refer patent document 1).

  FIG. 10 shows a conventional metal terminal. In the figure, (a) is a plan sectional view of a metal terminal, and (b) is a side sectional view of the metal terminal.

  In the figure, reference numeral 811 denotes a housing made of an insulating material, and is formed with a recess 813 in which the relay terminal 951 is inserted and accommodated. A first terminal 851 is attached in the recess 813. The first terminal 851 is a member made of a metal plate connected to one electric device, electronic device, or the like, and extends from the back wall of the recess 813 toward the opening 812. The first terminal 851 has a retaining recess 852 formed on both sides thereof.

  Reference numeral 861 denotes a second terminal 861 made of a metal plate, which is a member made of a metal plate connected to the other electrical device, electronic device, or the like.

  The relay terminal 951 is a member made of a substantially rectangular cylindrical metal plate having a pair of side walls 952 and a pair of upper and lower walls 953, and has insertion ports 957 at both ends in the longitudinal direction (vertical direction in the drawing). Each of the insertion ports 957 is formed with a pair of elastic contact pieces 955 bent so as to be folded back from the center of each of the upper and lower walls 953 toward the inside of the insertion port 957. Each of the side walls 952 is formed with an elastic retaining piece 956 that is obliquely raised from the vicinity of each insertion port 957 toward the center in the longitudinal direction.

  In order to electrically connect the one electric device or electronic device and the other electric device or electronic device, the relay terminal 951 is first inserted into the recess 813 from the opening 812. Then, the first terminal 851 relatively enters the upper insertion port 957 in the figure of the relay terminal 951 and is sandwiched from both sides by the pair of elastic contact pieces 955. Thereby, the 1st terminal 851 and the relay terminal 951 are electrically connected. Further, the ends of the pair of elastic retaining pieces 956 engage with the retaining recesses 852 of the first terminals 851. This prevents the first terminal 851 from being pulled out from the relay terminal 951.

  Subsequently, the second terminal 861 is inserted into the lower insertion port 957 of the relay terminal 951 in the drawing. Thus, the second terminal 861 is sandwiched from both sides by the pair of elastic contact pieces 955 and is electrically connected to the relay terminal 951. In this way, the first terminal 851 and the second terminal 861 are electrically connected to each other via the relay terminal 951.

JP 2001-110534 A

  However, in the conventional metal terminal, when the first terminal 851 and the second terminal 861 enter the insertion port 957 of the relay terminal 951, the first elastic contact piece 955 is spread simultaneously with the pair of elastic retaining pieces. Since 956 is expanded, a large resistance is received from the relay terminal 951. That is, the resistance when the first terminal 851 and the second terminal 861 are inserted and fitted into the relay terminal 951 is increased. Therefore, when the first terminal 851 and the second terminal 861 are inserted and fitted into the relay terminal 951, a large insertion force or fitting force is required.

  Here, the conventional problem is solved, and when the first terminal and the second terminal are fitted, the timing for deforming the contact spring member and the timing for deforming the lock spring member are shifted. It is possible to perform fitting by applying a small force, to maintain the contact state reliably, to prevent the disconnection reliably, the structure is simple, the cost is low, The object is to provide a metal terminal with a wide range of application.

  Therefore, the metal terminal is a metal terminal having a first terminal made of a conductive metal and a second terminal made of a conductive metal and fitted to the first terminal, the first terminal Includes a first contact portion, the first contact portion including a bottom plate portion, a pair of side plate portions connected to the bottom plate portion, and a lock recess formed in the side plate portion, and the second terminal is A second contact portion into which the first contact portion can be inserted, the second contact portion being in contact with the first contact portion, the second contact portion being pressed by a bottom plate portion of the first contact portion. A contact spring member including a contact end portion and a lock spring member including a lock convex portion engageable with the lock concave portion, and the contact spring member starts contact with the first contact portion. And the position at which the locking spring member starts contact with the first contact portion means how to insert the first contact portion. It is offset with respect.

  In another metal terminal, the position at which the locking spring member starts contact with the first contact portion is more first than the position at which the contact spring member starts contact with the first contact portion. It is the front side in the insertion direction of the contact portion.

  In still another metal terminal, the contact spring member has a base end connected and fixed to the second contact portion, and extends from the base end in the insertion direction of the first contact portion. The locking spring member is a leaf spring-like member whose both ends are connected and fixed to the second contact portion.

  In still another metal terminal, a second contact convex portion having a sharp tip is formed at the contact end portion, and the second contact convex portion is pressed against the bottom plate portion of the first contact portion.

  In still another metal terminal, the second contact portion includes a bottom plate portion, a flat top plate portion facing the bottom plate portion, and a pair of side plate portions connecting the bottom plate portion and the top plate portion. The contact spring member is formed on the bottom plate portion, and the lock spring member is formed on the side plate portion.

  In still another metal terminal, a first contact convex portion having a sharp tip is formed on the side plate portion of the first contact portion, and the first contact convex portion is connected to the top plate portion of the second contact portion. Contact.

  In yet another metal terminal, the second contact portion further includes a back wall portion disposed at a rear end thereof, and when the insertion of the first contact portion into the second contact portion is completed, the first contact portion is completed. The front end edge of the portion abuts against the back wall portion, the lock convex portion enters the lock concave portion, and the first contact portion and the second contact portion are positioned and locked.

  Still another metal terminal is a metal terminal having a first terminal made of a conductive metal and a second terminal made of a conductive metal and fitted to the first terminal, the first terminal Comprises a first fixing part fixed to the connection part of the first conductive component, and a first contact part, and the front part of the first fixing part is connected to the rear end of the first contact part, The second terminal is a second contact part into which the first contact part can be inserted, and includes a second contact part that contacts the first contact part. The second contact part includes a bottom plate part and the bottom plate part. A flat plate-shaped top plate portion that faces the bottom plate portion, and the top plate portion includes a guide convex portion that protrudes toward the bottom plate portion, and when the insertion of the first contact portion into the second contact portion is completed, the guide The convex part is located immediately above the front part of the first fixed part.

  In still another metal terminal, when the insertion of the first contact portion into the second contact portion is completed, the lower end of the guide convex portion comes close to or comes into contact with the upper end of the front portion of the first fixed portion. .

  In still another metal terminal, when the insertion of the first contact portion into the second contact portion is completed, the range from the front end edge of the first contact portion to the rear end of the front portion of the first fixed portion. Is accommodated in the second contact portion.

  According to the present disclosure, when the first terminal and the second terminal are fitted, the timing for deforming the contact spring member and the timing for deforming the lock spring member are shifted. Thus, the fitting can be performed only by applying a small force, the contact state can be reliably maintained, and the disconnection can be reliably prevented. Further, the structure can be simplified, the cost can be reduced, and a metal terminal having a wide application range can be obtained.

It is a perspective view of the 1st terminal in a 1st embodiment, and the 2nd terminal, and (a) is a figure showing the state before fitting, and (b) is a figure showing the fitted state. 5A and 5B are five side views of the first terminal in the first embodiment, where FIG. 5A is a left side view, FIG. 5B is a top view, FIG. 5C is a right side view, and FIG. ) Is a front view. 5A and 5B are five side views of the second terminal in the first embodiment, where FIG. 5A is a left side view, FIG. 5B is a top view, FIG. 5C is a right side view, and FIG. ) Is a bottom view. It is sectional drawing of the 2nd terminal in 1st Embodiment, Comprising: (a) is AA arrow sectional drawing in FIG.3 (b), (b) is BB arrow view in FIG.3 (b). It is sectional drawing. It is a figure which shows the 1st process of fitting the 1st terminal and 2nd terminal in 1st Embodiment, Comprising: (a) is a top view of the state which excised the top plate part of the 2nd terminal, (b) ) Is a cross-sectional view taken along the line CC in (a). It is a figure which shows the 2nd process of fitting the 1st terminal and 2nd terminal in 1st Embodiment, Comprising: (a) is a top view of the state which excised the top plate part of the 2nd terminal, (b) ) Is a cross-sectional view taken along the line CC in (a). It is a figure which shows the 3rd process of fitting the 1st terminal and 2nd terminal in 1st Embodiment, Comprising: (a) is a top view of the state which cut out the top-plate part of a 2nd terminal, (b) ) Is a cross-sectional view taken along the line CC in (a). It is a figure which shows the 4th process of fitting the 1st terminal and 2nd terminal in 1st Embodiment, Comprising: (a) is a top view of the state which excised the top-plate part of the 2nd terminal, (b) ) Is a cross-sectional view taken along the line CC in (a). It is a figure of the 1st terminal in a 2nd embodiment, and the 2nd terminal, (a) is a perspective view of the 1st terminal and the 2nd terminal, and (b) is a top view of the 1st terminal. It is a figure which shows the conventional metal terminal, Comprising: (a) is a plane sectional view of a metal terminal, (b) is a sectional side view of a metal terminal.

  Hereinafter, the present embodiment will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of the first terminal and the second terminal in the first embodiment, and FIG. 2 is a five-face view of the first terminal in the first embodiment. 1A is a diagram showing a state before fitting, FIG. 1B is a diagram showing a fitted state, FIG. 2A is a left side view, and FIG. 1B is a top view. (C) is a right side view, (d) is a rear view, and (e) is a front view.

  In the figure, 51 is a first terminal which is one of a pair of metal terminals in the present embodiment, and 151 is a second terminal which is the other of the pair of metal terminals in the present embodiment. For example, as shown in FIG. 1, the metal terminal in the present embodiment electrically and mechanically connects an electric wire 91 as a first conductive component and a substrate (not shown) as a second conductive component. However, it may be used to electrically and mechanically connect the substrate and another substrate, or the electric wire 91 and the other electric wire may be electrically and It may be used for mechanical connection or may be used for any kind of application.

  The board is, for example, a personal computer, a mobile phone, a smart phone, a digital television, a vehicle navigation device, a game machine or other electrical equipment, a printed circuit board used for an electronic device, a flexible circuit board, etc. It may be a light receiving element used for a solar cell panel, an LCD display device, an LED display device, an LED lighting apparatus, a semiconductor element mounting substrate mounted with a light emitting element, or the like, or may be used for any kind of device. Any type of substrate may be used. The electric wire 91 may be any type of electric wire used in any type of device. That is, the first and second conductive parts may be any kind of conductive parts.

  Furthermore, although the metal terminal in this Embodiment is used for the connection of a power line, for example, it may be used for the connection of a ground line, and is used for the connection of a signal line. It may be.

  In the present embodiment, the expressions indicating directions such as upper, lower, left, right, front, rear, etc. used for explaining the configuration and operation of each part of the first terminal 51 and the second terminal 151 are as follows. It is not absolute but relative, and is appropriate when each part of the first terminal 51 and the second terminal 151 has the posture shown in the figure, but when the posture changes, the posture changes. It should be interpreted according to changes.

  The first terminal 51 is an integral member manufactured by punching or bending a conductive metal plate, and includes a first contact portion 55 as a contact portion and the first contact portion. The first contact portion 55 is formed as a lock portion for holding a first fixed portion 53 as a fixed portion connected to the rear of the first and second terminals 151 and the first terminal 51 and the second terminal 151. And a lock recess 56 which is a first lock portion.

  The first terminal 51 is typically a fine member having a total length of about 6.5 [mm], a total width of about 1.5 [mm], and a total height of about 1.0 [mm]. The dimensions of each part can be changed as needed.

  The second terminal 151 is an integral member manufactured by punching or bending a conductive metal plate, and includes a second contact portion 155 as a contact portion and a first terminal. A locking arm portion 156 that is a second locking portion formed on a side plate portion 155b of the second contact portion 155 as a locking spring member for maintaining a state where the 51 and the second terminal 151 are fitted to each other; A front fixing part 153a and a rear fixing part 153b as fixing parts connected to the front and rear ends of the bottom plate part 155a of the two contact part 155 are provided. In addition, when describing the said front fixing | fixed part 153a and the back fixing | fixed part 153b integrally, it demonstrates as the 2nd fixing | fixed part 153. FIG.

  The second fixing portion 153 is a portion that is electrically and mechanically connected and fixed to a connection pad as a connection portion formed on the surface of the substrate by connection means such as soldering, and is a substantially rectangular flat plate. As shown in the figure, it is desirable that at least the lower surface is a plane. By connecting the lower surface of the second fixing portion 153 to the surface of the connection pad by soldering or the like, the second terminal 151 is directly mounted on the substrate without using a member such as a housing. The connection pads are metal flat members connected to conductive traces such as power lines, ground lines, and signal lines provided in the substrate.

  In the example shown in the drawing, the lower surface of the second fixing portion 153 extends substantially parallel to the lower surface of the bottom plate portion 155a of the second contact portion 155 and is positioned below the lower surface of the bottom plate portion 155a. It is desirable to do. Thereby, in a state where the lower surface of the second fixing portion 153 is connected to the surface of the connection pad, a space is generated between the lower surface of the bottom plate portion 155a and the surface of the substrate. Further, it is desirable that a guide convex portion 155g as a dimple protruding downward is formed in a portion near the front end of the top plate portion 155e.

  The first fixing portion 53 includes a core caulking portion 53a for caulking and fixing a core wire 92 as a connection portion of the electric wire 91, and a covering caulking for caulking and fixing the electric wire 91 from the periphery of an insulating coating covering the periphery of the core wire 92. Part 53b. In the example shown in the figure, the core caulking portion 53a is the front portion of the first fixing portion 53 connected to the rear end of the first contact portion 55, and the covering caulking portion 53b is at the rear end of the core wire caulking portion 53a. It is a rear part of the connected 1st fixing | fixed part 53. FIG. Accordingly, the first fixing portion 53 is electrically and mechanically connected and fixed to the core wire 92 of the electric wire 91, and the first terminal 51 is directly connected to the terminal end of the electric wire 91 without using a member such as a housing. To be implemented. The electric wire 91 may be any of a power line, a ground line, a signal line, and the like.

  The first contact portion 55 is integrally connected to a substantially rectangular plate-like bottom plate portion 55a extending in the front-rear direction (left-right direction in FIG. 2B), and both left and right edges of the bottom plate portion 55a. And left and right side plate portions 55b. And in the state which the 1st terminal 51 fitted with the 2nd terminal 151, the said 1st contact part 55 is inserted in the opening part 157 of the square cylindrical 2nd contact part 155 with which the 2nd terminal 151 is equipped, The first contact 51 and the second terminal 151 are electrically connected to each other by contacting the second contact portion 155. In this case, the bottom plate portion 55a is elastically pressed from below by a cantilever-like plate spring-like contact arm portion 155d as a contact spring member provided in the bottom plate portion 155a of the second contact portion 155, thereby The conduction state between the first terminal 51 and the second terminal 151 is reliably maintained. Further, as shown in FIG. 2E, the side plate portions 55b are orthogonal to the bottom plate portion 55a and are parallel to each other when viewed from the front. Therefore, the first contact portion 55 is a bowl-shaped member having an open top and a rectangular cross section extending in the front-rear direction.

  The lock recess 56 is formed in each side plate portion 55b. As shown in FIGS. 2 (a) and 2 (c), in a side view, the lock recess 56 is formed in the side plate portion 55b so as to have a substantially rectangular shape that is recessed downward from the upper end edge 55e of the side plate portion 55b. This is the part where the part is missing. Note that the lower end of the lock recess 56 is positioned above the lower end of the side plate portion 55b. Further, the presence of the lock recess 56 divides the upper end edge 55e into a front upper end edge 55e1 and a rear upper end edge 55e2. Each of the front upper edge 55e1 and the rear upper edge 55e2 is a straight line parallel to the bottom plate portion 55a in a side view, but in the example shown in the figure, the front upper edge 55e1 is more than the rear upper edge 55e2. Located below.

  Each front upper edge 55e1 is formed with a first contact protrusion 55c as a contact protrusion protruding upward. The first contact protrusion 55c preferably has a pointed tip, so that when the first contact part 55 is inserted into the opening 157 of the second terminal 151, the first contact protrusion 55c is formed. The portion 55c rubs the lower surface of the top plate portion 155e of the second contact portion 155, and exhibits a so-called wiping effect that removes the coating formed on the surface of the lower surface, foreign matter adhering to the surface of the lower surface, and the like. The contact resistance between the first contact convex portion 55c and the top plate portion 155e is reduced. The first contact convex portion 55c can be omitted as appropriate.

  The bottom plate portion 55a is formed with elongated ribs 55d that bulge upward. In the example shown in the figure, the rib 55d is formed so as to extend forward from the rear end of the bottom plate portion 55a, but does not exist in front of the longitudinal center of the bottom plate portion 55a. Is desirable. By forming the rib 55d, the strength of the bottom plate portion 55a is improved. The number and arrangement of the ribs 55d can be changed as appropriate and can be omitted.

  As shown in the drawing, the front end edge of the lock recess 56 is preferably chamfered to form a front end inclined surface 56a, and has a slope that faces inward from the outside of the side plate portion 55b. However, the front end inclined surface 56a is not necessarily essential, and may not be formed if not necessary. The entire front end edge 55f of the first contact portion 55 is preferably chamfered. That is, as shown in the drawing, it is desirable that the bottom plate portion 55a and the side plate portion 55b have an inclined surface that spreads from the inside toward the outside as it goes rearward from the front end edge 55f. The second terminal 151 is inserted into the opening 157 more smoothly.

  Furthermore, the front end edge 55 f of the first contact portion 55 abuts on the back wall portion 154 included in the second terminal 151 when the first terminal 51 is fitted to the second terminal 151, and the first terminal 51 It functions as a stopper part that stops the progress in the fitting direction (forward direction). The front end edge 55f also functions as a positioning portion that defines a relative position in the fitting direction of the first terminal 51 and the second terminal 151.

  Next, the configuration of the second terminal 151 will be described in detail.

  FIG. 3 is a plan view of the second terminal in the first embodiment, and FIG. 4 is a cross-sectional view of the second terminal in the first embodiment. 3, (a) is a left side view, (b) is a top view, (c) is a right side view, (d) is a rear view, (e) is a bottom view, and in FIG. FIG. 3A is a cross-sectional view taken along the line AA in FIG. 3B, and FIG. 3B is a cross-sectional view taken along the line BB in FIG.

  As described above, the second terminal 151 includes the second fixing portion 153, the second contact portion 155, and the lock arm portion 156. The second fixing portion 153 includes a front fixing portion 153a and a rear fixing portion 153b, and is connected and fixed to a connection pad formed on the surface of the substrate by connecting means such as soldering.

  The second contact portion 155 connects the substantially rectangular flat plate-shaped top plate portion 155e, the flat plate-shaped bottom plate portion 155a facing the top plate portion 155e, and the top plate portion 155e and the bottom plate portion 155a. The cross-sectional shape including the pair of left and right side plate portions 155b is a rectangular tube portion having a substantially rectangular shape, and the top plate portion 155e and the bottom plate portion 155a face each other, and the pair of side plate portions 155b face each other. Has been. The opening 157 penetrates the second contact portion 155 in the front-rear direction (left-right direction in FIG. 3B) and is a hollow portion having a substantially rectangular cross section that opens at the front-rear ends of the second contact portion 155. The top plate portion 155e, the bottom plate portion 155a, and the side plate portion 155b define four surrounding surfaces.

  The rear end of the opening 157 is partially closed by a back wall 154 connected to the rear end of the side plate 155b. When the first terminal 51 is fitted to the second terminal 151, the back wall portion 154 contacts the front end edge 55f of the first contact portion 55 and moves in the fitting direction (front direction) of the first terminal 51. It also functions as a stopper that stops the progression of the first terminal 51, and also functions as a positioning part that defines a relative position of the first terminal 51 and the second terminal 151 in the fitting direction.

  In addition, a pair of plate-shaped inlet guide portions 157a extending from the front end of the side plate portion 155b toward the front (left side in FIG. 3B) is disposed at the front end of the opening 157. As shown in FIG. 3B, the inlet guide portion 157a is preferably inclined so that the distance between the entrance guide portion 157a increases toward the front.

  A cantilever-like contact arm portion 155d is formed on the bottom plate portion 155a. The contact arm portion 155d has a base end located near the front end of the second contact portion 155 connected and fixed to the bottom plate portion 155a, extends rearward from the base end, and is close to the rear end of the second contact portion 155. The tip (free end) located at is a leaf spring-like member that can be displaced vertically. Further, as shown in FIGS. 3 (c) and 4 (b), the contact arm portion 155d is connected to a substrate portion 155d1 substantially parallel to the bottom plate portion 155a and the tip of the substrate portion 155d1 in a side view. A tilted plate portion 155d2 that rises toward the front, and a portion connected to the tip of the tilted plate portion 155d2 and a plateau-shaped contact end portion 155d3 that is substantially parallel to the bottom plate portion 155a. Is desirable. As a result, the contact end portion 155d3 located at the free end of the contact arm portion 155d is elastically displaced in the vertical direction and contacts the lower surface of the bottom plate portion 55a of the first contact portion 55.

  In the example shown in the figure, the contact end 155d3 located at the tip of the contact arm 155d is formed with a second contact protrusion 155c as a contact protrusion protruding upward from the upper surface thereof. ing. The second contact convex portion 155c preferably has a pointed tip, so that when the first contact portion 55 is inserted into the opening 157 of the second terminal 151, the second contact convex portion 155c is formed. The portion 155c rubs the lower surface of the bottom plate portion 55a of the first contact portion 55, exhibits a so-called wiping effect that removes the coating formed on the surface of the lower surface, foreign matter adhering to the surface of the lower surface, etc. The contact resistance between the 2-contact convex portion 155c and the bottom plate portion 55a is reduced. The second contact convex portion 155c can be omitted as appropriate.

  Each side plate portion 155b is formed with a lock arm portion 156 extending in the front-rear direction. The lock arm portion 156 is connected and fixed to the side plate portion 155b at both front and rear ends, and a lock convex portion 156a protruding toward the inside of the side plate portion 155b, that is, inward of the opening portion 157 is formed at a part of the intermediate portion. Is formed. As shown in FIGS. 3B and 3E, the front side of the lock projection 156a in the lock arm 156 is gently inclined so as to go inward of the opening 157 as it goes backward. It is desirable that a lock front side inclined portion 156b is formed, and a lock rear side inclined portion 156c which is inclined toward the inside of the opening portion 157 toward the front is formed on the rear side of the lock convex portion 156a. . The lock arm 156 functions as a leaf spring with both ends fixed (both supported). As a result, the lock projection 156a is elastically displaced in the lateral direction (vertical direction in FIG. 3E), and the first terminal 51 is locked when the first terminal 51 is fitted to the second terminal 151. Engages with the recess 56.

  Furthermore, it is desirable that a guide convex portion 155g as a dimple projecting downward is formed at a portion near the front end of the top plate portion 155e. When the first terminal 51 is fitted to the second terminal 151, the guide protrusion 155g enters from the upper side between the left and right side plate portions 55b of the first terminal 51, and the first terminal 51 extends in the left-right direction. Functions as a guide for positioning. In addition, in the state where the fitting between the first terminal 51 and the second terminal 151 is completed, the guide convex portion 155g is a part of the first fixing portion 53 of the first terminal 51, specifically, the core wire caulking portion 53a. And the lower end of the guide convex portion 155g is close to or in contact with the upper end of the core wire caulking portion 53a. As a result, the vertical displacement of the first fixing portion 53 connected to the rear of the first contact portion 55 of the first terminal 51 is limited by the guide convex portion 155g. Even when the first fixing portion 53 receives an external force in the vertical direction as in the case of being beaten, the posture of the first contact portion 55 inserted into the second contact portion 155 is stabilized, and the first The state in which the terminal 51 and the second terminal 151 are fitted is securely held.

  Next, the operation of fitting and connecting the first terminal 51 and the second terminal 151 will be described.

  FIG. 5 is a diagram showing a first step of fitting the first terminal and the second terminal in the first embodiment, and FIG. 6 is a fitting of the first terminal and the second terminal in the first embodiment. The figure which shows a 2nd process, FIG. 7 is a figure which shows the 3rd process of fitting the 1st terminal and 2nd terminal in 1st Embodiment, FIG. 8 is the 1st terminal in 1st Embodiment. It is a figure which shows the 4th process of fitting a 2nd terminal. 5-8, (a) is a top view of a state in which the top plate portion of the second terminal is cut away, and (b) is a cross-sectional view taken along the line CC in (a).

  Here, the first terminal 51 includes the electric wire 91 from the periphery of the insulating coating in which the core caulking portion 53 a of the first fixing portion 53 caulks and fixes the core wire 92 of the electric wire 91 and the covering caulking portion 53 b covers the periphery of the core wire 92. By crimping and fixing, the second terminal 151 is mounted and fixed to the surface of the connection pad of the substrate (not shown) by soldering or the like, and the second terminal 151 is fixed. The description will be made assuming that it is mounted on a substrate.

  As shown in FIG. 1A, the operator sets the tip of the first terminal 51 and the tip of the second terminal 151 to face each other, and places the first terminal 51 and / or the second terminal 151 on the other side. The first contact portion 55 of the first terminal 51 is inserted into the opening portion 157 of the second terminal 151 by moving it so as to approach. At this time, an entrance guide portion 157a extending forward from the front end of the side plate portion 155b is disposed at the front end of the opening portion 157, and the interval between the entrance guide portions 157a increases toward the front. Thus, the first contact portion 55 of the first terminal 51 is smoothly inserted into the opening 157 of the second terminal 151.

  In addition, when the lower surface of the second fixing portion 153 of the second terminal 151 is located below the lower surface of the bottom plate portion 155a, the bottom plate is in a state where the lower surface of the second fixing portion 153 is connected to the surface of the connection pad. Since there is a space between the lower surface of the portion 155a and the surface of the substrate, the first contact portion 55 can be smoothly inserted into the opening 157 even when the second terminal 151 is mounted on the substrate. it can.

  When the first terminal 51 advances in the fitting direction relative to the second terminal 151, first, as shown in FIG. 5, the front edge 55f of the side plate portion 55b of the first contact portion 55 is locked arm. It contacts the inside of the portion 156, specifically, the inside of the lock front side inclined portion 156b. After this timing, as the first terminal 51 advances, the lock front side inclined portion 156b and the lock convex portion 156a of the lock arm portion 156 are displaced outward. Therefore, the first terminal 51 receives resistance as a reaction caused by elastically deforming the lock arm portion 156 as it progresses.

  As shown in FIG. 5, at the timing when the front end edge 55f of the side plate portion 55b of the first contact portion 55 contacts the inside of the lock front side inclined portion 156b, the front end edge 55f of the bottom plate portion 55a is the contact arm portion. It is not yet in contact with the inclined plate portion 155d2 of 155d. Therefore, the first terminal 51 can proceed without receiving resistance as a reaction caused by elastically deforming the contact arm portion 155d from the contact arm portion 155d.

  Subsequently, when the first terminal 51 further advances relative to the second terminal 151 in the fitting direction, as shown in FIG. 6, the front edge 55 f of the bottom plate portion 55 a of the first contact portion 55 is brought into contact with the second terminal 151. It contacts the inclined plate portion 155d2 of the arm portion 155d. After this timing, the tip of the contact arm 155d is displaced downward as the first terminal 51 advances. Therefore, the first terminal 51 receives resistance as a reaction caused by elastically deforming the contact arm portion 155d as it progresses.

  Further, at the timing shown in FIG. 6, the lock front side inclined portion 156 b and the lock convex portion 156 a of the lock arm portion 156 are already displaced outward, and the lock convex portion 156 a is the side plate portion 55 b of the first contact portion 55. (In FIGS. 6 (a) and 7 (a), for convenience of drawing, the lock convex portion 156a and the side plate portion 55b are overlapped with each other. 156 is elastically deformed, and the inner end of the lock convex portion 156a is in contact with the outer surface of the side plate portion 55b. Then, even if the first terminal 51 further advances after this timing, the lock front side inclined portion 156b and the lock convex portion 156a of the lock arm portion 156 cannot be displaced further outward. Resistance as a reaction caused by elastically deforming the lock arm portion 156 is not received.

  Subsequently, when the first terminal 51 further advances in the fitting direction relative to the second terminal 151, as shown in FIG. 7, the tip of the contact arm portion 155d has already been displaced downward, More specifically, the contact end portion 155d3 located at the distal end is in contact with the lower surface of the bottom plate portion 55a of the first contact portion 55, with the second contact convex portion 155c formed on the contact end portion 155d3. Then, even if the first terminal 51 further advances after this timing, the contact end 155d3 is not further displaced downward, and the contact arm 155d is not deformed. The arm portion 155d does not receive resistance as a reaction caused by elastically deforming the contact arm portion 155d.

  Further, at the timing shown in FIG. 7, the lock front side inclined portion 156 b and the lock convex portion 156 a of the lock arm portion 156 are already displaced outward, and the lock convex portion 156 a is the side plate portion 55 b of the first contact portion 55. It is in contact with the outer surface of. Then, as described above, the first terminal 51 does not receive resistance as a reaction by elastically deforming the lock arm portion 156 from the lock arm portion 156 even if the first terminal 51 further proceeds after this timing. .

  Subsequently, when the first terminal 51 further advances in the fitting direction relative to the second terminal 151, the insertion of the first contact portion 55 into the second contact portion 155 is completed as shown in FIG. Then, the fitting of the first terminal 51 and the second terminal 151 is completed, and the front end edge 55f of the first contact portion 55 comes into contact with the back wall portion 154. Accordingly, the first terminal 51 is positioned in the fitting direction with respect to the second terminal 151 and cannot proceed any further.

  Further, the lock concave portion 56 formed in the side plate portion 55 b of the first contact portion 55 reaches the position of the lock convex portion 156 a of the lock arm portion 156. Therefore, the lock arm portion 156 elastically restores its shape, and the lock convex portion 156 a enters the lock concave portion 56. Thereby, the lock convex part 156a and the lock concave part 56 are engaged with each other to be locked, and the state where the first terminal 51 and the second terminal 151 are fitted is maintained. The lock projection 156a, more specifically, the inner surface of the lock rear-side inclined portion 156c abuts the front edge of the lock recess 56, so that the side plate portion 55b is moved to the back by the lock rear-side inclined portion 156c. It will be in the state pressed toward the wall part 154. FIG. Therefore, the side plate portion 55b is sandwiched from the front and rear by the lock rear side inclined portion 156c and the back wall portion 154, and the position of the first terminal 51 relative to the second terminal 151 is stabilized.

  Furthermore, the contact end portion 155d3, more specifically, the second contact convex portion 155c, is pressed against the lower surface of the bottom plate portion 55a of the first contact portion 55 by the spring force exerted by the contact arm portion 155d. It has become. 5 to 8 show a state in which the top plate portion 155e of the second contact portion 155 of the second terminal 151 is cut out for convenience of illustration, but actually the top plate portion 155e exists. Since the first contact protrusion 55c formed on the upper edge 55e of the side plate portion 55b is in contact with the lower surface of the top plate portion 155e, the first contact portion 55 cannot be displaced upward. Accordingly, the second contact convex portion 155c is reliably pressed against the lower surface of the bottom plate portion 55a of the first contact portion 55 and maintains contact with the bottom plate portion 55a.

  Further, the guide convex portion 155g is located immediately above the core wire caulking portion 53a, and the lower end of the guide convex portion 155g is close to or in contact with the upper end of the core wire caulking portion 53a. The vertical displacement of the first fixed portion 53 connected to the rear of the portion 55 is limited by the guide convex portion 155g. Therefore, even when the first fixing portion 53 receives an external force in the vertical direction, the posture of the first contact portion 55 inserted into the second contact portion 155 is stable, and the first terminal 51 and the second terminal The state in which 151 is fitted is reliably maintained.

  Furthermore, the long range from the front end edge 55f of at least the first contact portion 55 of the first terminal 51 to the rear end of the core wire caulking portion 53a of the first fixing portion 53 connected to the rear of the first contact portion 55 is the second range. The terminal 151 is accommodated in the second contact portion 155. Therefore, even when the first terminal 51 or the second terminal 151 receives an external force such as vibration, the posture and positional relationship between the first terminal 51 and the second terminal 151 are not disturbed, and a stable contact state is achieved. Is maintained.

  Thus, in the present embodiment, the metal terminal has the first terminal 51 made of a conductive metal and the second terminal 151 made of a conductive metal and fitted with the first terminal 51. The first terminal 51 includes a first contact portion 55. The first contact portion 55 includes a bottom plate portion 55a, a pair of side plate portions 55b connected to the bottom plate portion 55a, and a lock recess formed in the side plate portion 55b. 56, the second terminal 151 includes a second contact portion 155 that can be inserted into the first contact portion 55 and is in contact with the first contact portion 55. The second contact portion 155 A contact arm portion 155d including a contact end portion 155d3 pressed against the bottom plate portion 55a of the first contact portion 55 and a lock arm portion 156 including a lock convex portion 156a that can be engaged with the lock concave portion 56; The position at which the portion 155d starts to contact the first contact portion 55 and the position at which the lock arm portion 156 starts to contact the first contact portion 55 are shifted with respect to the insertion direction of the first contact portion 55. 1 contact portion 55 is inserted into the second contact portion 155 The time, one of the contact arm portion 155d and the lock arm portion 156 when the are deformed by the first contact portion 55, the other is not deformed.

  Thereby, when inserting the 1st contact part 55 in the 2nd contact part 155, and fitting the 1st terminal 51 and the 2nd terminal 151, the timing which deform | transforms the contact arm part 155d, and the lock arm part 156 are deformed. When the first contact portion 55 is inserted into the second contact portion 155, when any one of the contact arm portion 155d and the lock arm portion 156 is deformed by the first contact portion 55, The other does not deform. Therefore, the first contact portion 55 can be inserted into the second contact portion 155 without receiving a large resistance, and the operator can fit the first terminal 51 and the second terminal 151 only by applying a small force. Can be made. In addition, since the first contact portion 55 and the second contact portion 155 are locked when the lock convex portion 156a engages with the lock concave portion 56, the contact state between the first contact portion 55 and the second contact portion 155. And the fitting state of the 1st terminal 51 and the 2nd terminal 151 is maintained reliably, and the disconnection from the 2nd contact part 155 of the 1st contact part 55 is prevented reliably. Furthermore, the structure of the first terminal 51 and the second terminal 151 can be simplified, the cost can be reduced, and a metal terminal with a wide application range can be obtained.

  More specifically, the position at which the lock arm portion 156 starts to contact the first contact portion 55 is located at the position where the contact arm portion 155d starts to contact the first contact portion 55 than the position at which the contact arm portion 155d starts to contact the first contact portion 55. This is the front side of the insertion direction. Thus, when the first contact portion 55 is inserted into the second contact portion 155 and the first terminal 51 and the second terminal 151 are fitted, first, the lock arm portion 156 contacts the first contact portion 55. By doing so, the contact arm portion 155d is not deformed. Accordingly, the first terminal 51 only receives resistance as a reaction caused by elastically deforming the lock arm portion 156, and receives resistance as a reaction caused by elastically deforming the contact arm portion 155d. There is no. Subsequently, the contact arm portion 155d is elastically deformed by coming into contact with the first contact portion 55. At this time, the lock arm portion 156 has already been deformed and is not deformed any further. Therefore, the first terminal 51 only receives resistance as a reaction caused by elastically deforming the contact arm portion 155d, and receives a resistance as a reaction caused by elastically deforming the lock arm portion 156. There is no.

  Further, the contact arm portion 155d is a cantilever-like leaf spring-like member whose base end is connected and fixed to the second contact portion 155 and extends from the base end in the insertion direction of the first contact portion 55. The part 156 is a leaf spring-like member whose both ends are connected and fixed to the second contact part 155. Accordingly, the distance from the base end of the contact arm portion 155d to the contact end portion 155d3 can be set long, and the spring length of the contact arm portion 155d can be set long, so that the contact end portion 155d3 is elastically moved up and down. The range of displacement in the direction is increased, and the spring force that presses the contact end portion 155d3 against the bottom plate portion 55a is increased. Thereby, even if the first terminal 51 and the second terminal 151 fitted to each other receive an external force such as vibration and the bottom plate portion 55a is displaced, the contact end portion 155d3 reliably maintains the contact state with the bottom plate portion 55a. As a result, the contact state between the first contact portion 55 and the second contact portion 155 is reliably maintained. Moreover, the contact arm portion 155d is a cantilever in which the contact end portion 155d3, which is a free end, faces the downstream side in the insertion direction of the first contact portion 55. Therefore, the contact arm portion 155d is attached to the bottom plate portion 55a of the first contact portion 55 to be inserted. There is no catch.

  Further, a second contact convex portion 155 c having a sharp tip is formed on the contact end portion 155 d 3, and the second contact convex portion 155 c is pressed against the bottom plate portion 55 a of the first contact portion 55. As a result, the pointed tip of the second contact convex portion 155c rubs the bottom plate portion 55a of the first contact portion 55, so that the coating formed on the surface, foreign matter adhering to the surface, etc. are removed. Since the effect is exhibited, the contact resistance between the contact end portion 155d3 and the bottom plate portion 55a is reduced.

  Furthermore, the second contact portion 155 includes a bottom plate portion 155a, a flat top plate portion 155e facing the bottom plate portion 155a, and a pair of side plate portions 155b that connect the bottom plate portion 155a and the top plate portion 155e, The contact arm portion 155d is formed on the bottom plate portion 155a, and the lock arm portion 156 is formed on the side plate portion 155b. As a result, the first contact portion 55 inserted into the second contact portion 155 is sandwiched between the contact end portion 155d3 and the top plate portion 155e of the contact arm portion 155d, so that the contact end portion 155d3 and the first end portion 155d The contact state of the contact portion 55 with the bottom plate portion 55a is reliably maintained. Further, since the left and right side plate portions 55b of the first contact portion 55 inserted into the second contact portion 155 are sandwiched from the outside by the pair of lock arm portions 156, the side plate portion 55b of the first contact portion 55 is placed. The engagement between the lock recess 56 formed on the lock protrusion 56 and the lock protrusion 156a of the lock arm 156 is ensured, the contact state between the first contact portion 55 and the second contact portion 155, and the first terminal 51 and the second terminal. The fitting state with 151 is more reliably maintained.

  Further, a first contact convex portion 55 c having a sharp tip is formed on the side plate portion 55 b of the first contact portion 55, and the first contact convex portion 55 c comes into contact with the top plate portion 155 e of the second contact portion 155. As a result, the sharp tip of the first contact convex portion 55c rubs the top plate portion 155e of the second contact portion 155 to remove the coating formed on the surface, foreign matter adhering to the surface, etc. Since the wiping effect is exhibited, the contact resistance between the first contact portion 55 and the top plate portion 155e is reduced.

  Further, the second contact portion 155 includes a back wall portion 154 disposed at the rear end thereof, and when the insertion of the first contact portion 55 into the second contact portion 155 is completed, the front end edge 55f of the first contact portion 55 is Abutting against the back wall 154, the lock projection 156a enters the lock recess 56, and the first contact portion 55 and the second contact portion 155 are positioned and locked. Therefore, the position of the first terminal 51 with respect to the second terminal 151 is stabilized.

  Thus, in the present embodiment, the first terminal 51 includes the first fixing portion 53 that is fixed to the core wire 92 of the electric wire 91 and the first contact portion 55, and the core wire caulking portion of the first fixing portion 53. 53 a is connected to the rear end of the first contact portion 55, and the second terminal 151 is a second contact portion 155 into which the first contact portion 55 can be inserted and is in contact with the first contact portion 55. The second contact portion 155 includes a bottom plate portion 155a and a flat plate-like top plate portion 155e facing the bottom plate portion 155a, and the top plate portion 155e has a guide convex portion 155g protruding toward the bottom plate portion 155a. When the insertion of the first contact portion 55 into the second contact portion 155 is completed, the guide convex portion 155g is positioned immediately above the core wire crimping portion 53a of the first fixing portion 53.

  As a result, the vertical displacement of the first fixed portion 53 is limited by the guide convex portion 155g, so that the first fixed portion 53 is moved in the vertical direction as in the case where the electric wire 91 is wound in the vertical direction, for example. Even when external force is applied, the posture of the first contact portion 55 inserted into the second contact portion 155 is stable, and the state in which the first terminal 51 and the second terminal 151 are fitted is reliably maintained. Is done.

  When the insertion of the first contact portion 55 into the second contact portion 155 is completed, the lower end of the guide convex portion 155g approaches or comes into contact with the upper end of the core wire caulking portion 53a of the first fixing portion 53. Accordingly, since the vertical displacement of the first fixing portion 53 is more strictly limited by the guide convex portion 155g, the posture of the first contact portion 55 inserted into the second contact portion 155 is more stable.

  Further, when the insertion of the first contact portion 55 into the second contact portion 155 is completed, the range from the front end edge 55f of the first contact portion 55 to the rear end of the core wire caulking portion 53a of the first fixing portion 53 is the second contact. It is accommodated in the part 155. Therefore, since the displacement of the first contact portion 55 in the vertical direction and the left-right direction is limited by the second contact portion 155, the posture of the first contact portion 55 inserted into the second contact portion 155 is further stabilized.

  Next, a second embodiment will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by providing the same code | symbol. The description of the same operation and the same effect as those of the first embodiment is also omitted.

  FIG. 9 is a diagram of a first terminal and a second terminal in the second embodiment. In the figure, (a) is a perspective view of the first terminal and the second terminal, and (b) is a top view of the first terminal.

  As shown in the figure, the lock recess 56 of the first terminal 51 in the present embodiment is formed by bending a part of the side plate portion 55b to form a bent piece 56b. The bent piece 56 b is inclined and tilted so that the front end is connected and fixed to the side plate portion 55 b and the rear end faces the center of the first contact portion 55 in the width direction. The outer surface of the bent piece 56 b is a front end inclined surface 56 a located at the front end edge of the lock recess 56. Therefore, the front end inclined surface 56a in the present embodiment is larger in the front-rear direction of the first contact portion 55 than the front end inclined surface 56a in the first embodiment.

  Accordingly, when the insertion of the first contact portion 55 into the second contact portion 155 is completed, the lock convex portion 156a reliably contacts the front end inclined surface 56a. As a result, the bent piece 56b is pressed in the insertion direction of the first contact portion 55 by the lock convex portion 156a, so that the front end edge 55f of the first contact portion 55 is pressed by the back wall portion 154, and the first terminal 51 Positioning with respect to the second terminal 151 is ensured.

  In addition, since the structure of the other point of the 1st terminal 51 in this Embodiment is the same as that of the said 1st Embodiment, the description is abbreviate | omitted. In addition, the configuration of the second terminal 151 in the present embodiment is the same as that in the first embodiment, and a description thereof will be omitted. Further, since the operation of fitting and connecting the first terminal 51 and the second terminal 151 in the present embodiment is the same as that in the first embodiment, the description thereof is omitted.

  By the way, in the first and second embodiments, only the example in which the first terminal 51 is mounted on the electric wire 91 and the second terminal 151 is mounted on the substrate has been described. Similarly to the second terminal 151, the second terminal 151 may be mounted on a substrate, or the second terminal 151 may be mounted on an electric wire such as the electric wire 91 like the first terminal 51. Therefore, the 1st terminal 51 and the 2nd terminal 151 can be used for the connection between an electric wire and an electric wire, the connection between an electric wire and a substrate, and the connection between a substrate and a substrate.

  In addition, the disclosure of the present specification describes features related to preferred and exemplary embodiments. Various other embodiments, modifications and variations within the scope and spirit of the claims attached hereto can naturally be conceived by those skilled in the art by reviewing the disclosure herein. is there.

  The present disclosure can be applied to metal terminals.

51, 851 First terminal 53 First fixing portion 53a Core caulking portion 53b Covered caulking portion 55 First contact portion 55a, 155a Bottom plate portion 55b, 155b Side plate portion 55c First contact convex portion 55d Rib 55e Upper end edge 55e1 Front upper end edge 55e2 Rear upper edge 55f Front edge 56 Lock recess 56a Front inclined surface 56b Bending piece 91 Electric wire 92 Core wires 151 and 861 Second terminal 153a Front fixing part 153b Rear fixing part 154 Back wall part 155 Second contact part 155c Second contact convex part 155d Contact arm portion 155d1 Substrate portion 155d2 Inclined plate portion 155d3 Contact end portion 155e Top plate portion 155g Guide convex portion 156 Lock arm portion 156a Lock convex portion 156b Lock front side inclined portion 156c Lock rear side inclined portion 157 Opening portion 157a Entrance guide portion 811 Housing 812 Opening 813 Recess 852 Extraction Stop recess 951 Relay terminal 952 Side wall 953 Upper and lower walls 955 Elastic contact piece 956 Elastic retaining piece 957 Insertion slot

Claims (10)

(A) a metal terminal having a first terminal made of a conductive metal and a second terminal made of a conductive metal and fitted to the first terminal;
(B) The first terminal includes a first contact portion, and the first contact portion includes a bottom plate portion, a pair of side plate portions connected to the bottom plate portion, and a lock recess formed in the side plate portion. Including
(C) The second terminal is a second contact portion into which the first contact portion can be inserted, and includes a second contact portion that comes into contact with the first contact portion, and the second contact portion includes the first contact portion. A contact spring member including a contact end pressed against the bottom plate portion of the contact portion, and a lock spring member including a lock convex portion engageable with the lock concave portion,
(D) The position where the contact spring member starts contact with the first contact portion and the position where the lock spring member starts contact with the first contact portion are related to the insertion direction of the first contact portion. A metal terminal characterized by being displaced. The position where the locking spring member starts contact with the first contact portion is closer to the insertion direction of the first contact portion than the position where the contact spring member starts contact with the first contact portion. The metal terminal according to claim 1. The contact spring member is a cantilever-like plate spring-like member whose base end is connected and fixed to the second contact portion and extends from the base end in the insertion direction of the first contact portion, and the locking spring The metal terminal according to claim 1 or 2, wherein the member is a leaf spring-like member whose both ends are connected and fixed to the second contact portion. The contact end portion is formed with a second contact convex portion having a sharp tip, and the second contact convex portion is pressed against a bottom plate portion of the first contact portion. Metal terminal. The second contact portion includes a bottom plate portion, a flat plate-like top plate portion facing the bottom plate portion, and a pair of side plate portions that connect the bottom plate portion and the top plate portion, and the contact spring member includes: The metal terminal according to claim 1, wherein the metal terminal is formed on a bottom plate portion, and the locking spring member is formed on the side plate portion. The metal terminal according to claim 5, wherein a first contact convex portion having a sharp tip is formed on a side plate portion of the first contact portion, and the first contact convex portion is in contact with a top plate portion of the second contact portion. . The second contact portion includes a back wall portion disposed at a rear end thereof, and when the insertion of the first contact portion into the second contact portion is completed, a front end edge of the first contact portion is formed on the back wall portion. The metal terminal according to any one of claims 1 to 6, wherein the first contact portion and the second contact portion are positioned and locked by abutting, the lock convex portion entering the lock concave portion. (A) a metal terminal having a first terminal made of a conductive metal and a second terminal made of a conductive metal and fitted to the first terminal;
(B) The first terminal includes a first fixing portion fixed to a connection portion of the first conductive component, and a first contact portion, and a front portion of the first fixing portion is the first contact portion. Connected to the rear end of
(C) The second terminal is a second contact part into which the first contact part can be inserted, and includes a second contact part that contacts the first contact part, and the second contact part includes a bottom plate part and the second contact part. Including a flat plate-shaped top plate portion facing the bottom plate portion, the top plate portion including a guide convex portion protruding toward the bottom plate portion,
(D) When the insertion of the first contact portion into the second contact portion is completed, the guide convex portion is located immediately above the front portion of the first fixed portion. The metal terminal according to claim 8, wherein when the insertion of the first contact portion into the second contact portion is completed, the lower end of the guide convex portion approaches or abuts the upper end of the front portion of the first fixing portion. When the insertion of the first contact portion into the second contact portion is completed, a range from the front end edge of the first contact portion to the rear end of the front portion of the first fixing portion is accommodated in the second contact portion. Item 10. The metal terminal according to Item 8 or 9.

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