JP4867893B2 - Combination terminal bracket - Google Patents

Description

  The present invention relates to a combination terminal fitting.

A combination terminal fitting described in Patent Document 1 is known. This is used, for example, when attaching grounds individually connected to a plurality of devices to the body of an automobile, etc., and a pair of terminal fittings are assembled in the left-right direction and assembled to the body side. It is designed to be tightened and fixed to the mounting bolts. Both terminal fittings are provided with plate-like terminal bodies that are slidable with each other, and both terminal bodies are each provided with a locking hole and a locking projection that hold the assembled state of the terminal fittings. . In the process of assembling both the terminal fittings, the locking projections are in sliding contact with the mating plate surface and both terminal bodies are bent and deformed, while in the state where both the terminal fittings are properly assembled, the locking projections are The terminal body is elastically fitted into the locking hole, the both terminal bodies are elastically restored, and the locking protrusion is locked to the locking edge of the locking hole.
JP 2006-252810 A

  In the above case, since both terminal bodies are bent and deformed in the process of assembling both terminal fittings, there is a problem that the operating force is increased and workability is poor. On the other hand, when the operating force is reduced by reducing the protruding amount of the locking projection, the locking projection is easily removed from the locking hole, and the assembled state of both terminal fittings cannot be maintained. There was a fear.

  This invention is completed based on the above situations, Comprising: While improving workability | operativity, it aims at providing the combination terminal metal fitting which can maintain an assembly | attachment state.

  As means for achieving the above-mentioned object, the invention of claim 1 has a plate-like shape slidable with each other, and a pair of terminal bodies assembled by overlapping the plate surfaces; The locking holes provided in the plate surface and the plate surfaces of the both terminal bodies are relatively displaced along the mating plate surface in the process of assembling the both terminal bodies, and the both terminal bodies are assembled. Sometimes, the terminal body is provided with a locking projection that elastically fits in the locking hole on the other side and is locked to the locking edge of the locking hole, and the terminal body has a displacement direction of the terminal body. One end of which is opened as a receiving port for the locking projection, and the other end is partially cut while leaving the locking margin of the locking projection with the locking edge of the locking hole. The feature is that it has a configuration in which an entrance groove of the locking projection is provided to face the locking hole. To.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the groove width of the entry groove is gradually narrowed from the receiving port toward the locking hole.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the terminal body is provided with a mounting hole through which a mounting bolt passes, and the mounting hole is between the mounting hole and the locking hole. The entry groove communicates with each other, and a pair of extended portions projecting into the mounting hole are provided on both sides of the terminal body with the entry groove interposed therebetween. Have.

<Invention of Claim 1>
In the process of assembling both terminal fittings, the operating force can be reduced by the locking projections entering the entry grooves, so that workability is improved. On the other hand, at the time of assembling both terminal fittings, the locking projections fit into the locking holes and are locked to the locking edges of the locking holes so that the assembled state of both terminal fittings can be maintained.

<Invention of Claim 2>
Since the groove width of the entry groove is gradually narrowed from the receiving port toward the engagement hole, the frictional resistance that the engagement protrusion receives from the engagement hole side at the start of entry of the engagement protrusion into the entry groove is reduced. The operating force can be sufficiently reduced by making it extremely small or eliminated. When the locking projection is fitted in the locking hole, a sufficient locking margin is provided between the locking projection and the locking edge of the locking hole. Can be secured.

<Invention of Claim 3>
The locking edge of the locking hole in the terminal body may be weakened by the opening of the entry groove, but according to the present invention, the bolt penetrates on both sides of the terminal body with the entry groove interposed therebetween. Since the pair of extended portions projecting toward the mounting hole is provided, the locking strength can be prevented from becoming weak, and the locking projection can be reliably prevented from coming off.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The combination terminal fitting of the present embodiment is composed of two terminal fittings 10 and 50 made of a metal plate, and both terminal fittings 10 and 50 are assembled and attached to a grounded panel (not shown). It can be attached via a bolt (not shown).

  The first terminal fitting 10 is positioned above the second terminal fitting 50 in the assembled state. As shown in FIG. 1, the rectangular terminal main body 11 whose corners form an arc shape, It consists of a wire connecting portion 12 extending rearward from the rear right side of the terminal body 11. The electric wire connecting portion 12 has an open barrel shape in which caulking pieces are raised from the left and right side edges of the bottom plate 13, and an electric wire (not shown) crimped to the electric wire connecting portion 12 extends rearward from the terminal body 11. ing. The terminal body 11 is a first engagement that connects a pair of front and rear flat plate portions 14 that are long in the left-right direction and the right end portions (end portions on the same side as the side where the electric wires are located) of both the flat plate portions 14 in a bridging manner. Part 15 and a second engaging part 16 that connects the left end parts of the flat plate part 14 in a bridging manner, and a mounting hole 17 through which a mounting bolt passes is opened in a central part surrounded by these parts. ing. And the electric wire connection part 12 continues to the flat plate part 14 of the back side, and both the flat plate parts 14 are mutually arrange | positioned at the same height.

Each of the first engaging portion 15 and the second engaging portion 16 has a flat plate shape and is arranged with a space in the left-right direction. Moreover, both the engaging parts 15 and 16 are located below the flat plate part 14 by the board thickness.
A locking hole 18 having a vertically long rectangular shape in the front-rear direction is provided at the right end of the first engagement portion 15. The first engagement portion 15 is provided with a pair of front and rear slits 19 that are notched to the right along the boundary with the flat plate portion 14 from the left end edge. A pair of front and rear extension portions 21 projecting from each other is provided. The extended portion 21 can be bent and deformed in the plate thickness direction (vertical direction) by both slits 19.

  The first engagement portion 15 is provided with an entry groove 22 that communicates between the attachment hole 17 and the locking hole 18 across the expansion portion 21 in the left-right direction. The left end edge of the extended portion 21 has an arc shape along the outer peripheral surface of the mounting bolt, and the left end of the entry groove 22 is opened in a notch shape at the center in the front-rear direction. The opening at the left end of the entry groove 22 is the receiving port 24 of the present invention. Further, the right end of the entry groove 22 is opened in a notch shape at the center in the front-rear direction of the left end edge of the locking hole 18. The entrance groove 22 is configured to gradually narrow the groove width from the left end (receiving port 24) to the right end (locking edge of the locking hole 18), and the groove surfaces facing in the front-rear direction are tapered. And more than half of the front-rear length of the entry groove 22 is located on the extended portion 21 side.

  On the upper surface (front surface) of the first engagement portion 15, a tapered concave groove 25 that gradually decreases in depth along the groove edge portion of the entry groove 22 from the attachment hole 17 toward the locking hole 18 is cut. It is lacking. Further, both side portions in the front-rear direction of the left end edge of the locking hole 18 serve as a locking edge portion 26 with respect to a locking protrusion described later, and are arranged in pairs before and after the right end of the entry groove 22.

  At a position on the left end side on the upper surface of the second engagement portion 16, a locking projection 27 is provided that is slashed upward and struck downward and has a downward slope toward the left. The locking projection 27 has a vertically long rectangular shape in the front-rear direction in plan view, enters into the entry groove 22 in the process of assembling both terminal fittings 10, 50, and enters when the both terminal fittings 10, 50 are assembled. The locking hole 18 is fitted from the right end of the groove 22. The front-rear width (locking width) of the locking protrusion 27 is narrower than the groove width at the left end (receiving port 24) of the entry groove 22 and wider than the groove width at the right end of the entry groove 22. Further, the locking protrusion 27 passes through the groove 25 in the process of assembling both the terminal fittings 10 and 50, and the tapered upper surface thereof is aligned with the tapered inner surface of the groove 25 along the assembling direction. It comes in smooth sliding contact.

  The second engaging portion 16 is provided with a pair of front and rear slits 29 that are notched to the right along the boundary with the flat plate portion 14 from the left end edge. The substantially left half on which the locking projection 27 is provided can be bent and deformed in the thickness direction.

Next, the second terminal fitting 50 will be described. Since the basic structure of the second terminal fitting 50 is the same as that of the first terminal fitting 10, parts having the same structure are denoted by the same reference numerals. The overlapping explanation will be omitted as much as possible.
The second terminal fitting 50 is obtained by extending a wire connecting portion (not shown, but having the same shape as the wire connecting portion 12 of the first terminal fitting 50) from the left end portion of the rear end edge of the terminal body 51. As shown in FIG. 2, the terminal body 51 includes a pair of front and rear flat plate portions 54, a first engaging portion 55 that connects the left ends of the flat plate portions 54 (the same side as the side where the electric wires are located), It consists of the 2nd engaging part 56 which connects the right ends of both the flat plate parts 54, The attachment hole 57 which the bolt for attachment penetrates is opened in the center part. A locking hole 58 having locking edges 66 at both front and rear ends of the right end edge is provided at the left end portion of the first engagement portion 55, and a pair of front and rear is provided at the right end portion of the first engagement portion 55. A pair of front and rear extension parts 62 projecting into the mounting hole 57 is provided between the slits 59, and an entry groove 62 having a receiving port 64 at the right end is provided between the extension parts 62. A concave groove 65 is provided along the groove edge of the groove 62. The above is the same configuration as the first terminal fitting 10.

  On the other hand, in the second terminal fitting 50, a protruding portion 53 that protrudes to the right is provided in the second engaging portion 56, and a locking protrusion 67 is provided in the protruding portion 53. Unlike the first terminal fitting 10, the slit 19 is not provided on both sides of the overhang portion 53. In addition, a pair of front and rear attachment portions 52 that project leftward from both front and rear ends of the first engagement portion 55 are provided.

  Here, both the engaging portions 55 and 56 of the second terminal fitting 50 are obtained by rotating the both engaging portions 15 and 16 of the first terminal fitting 10 substantially 180 degrees around the front-rear direction axis. The terminal body 51 is in a substantially point-symmetric relationship with the terminal body 11 of the first terminal fitting 10 with respect to the longitudinal axis. Therefore, contrary to the first terminal fitting 10, the locking projection 67 in the second terminal fitting 50 is provided to protrude from the lower surface (back surface) of the second engagement portion 56 (the overhang portion 53). The concave groove 65 in the second terminal fitting 50 is provided on the lower surface (rear surface) of the first engagement portion 55, and both the engagement portions 55 and 56 in the second terminal fitting 50 have a plate thickness. It will be located above the flat plate part 54 by the amount.

Next, the operation of this embodiment will be described.
When assembling, first, as shown in FIG. 2, the first terminal fitting 10 is positioned to the right and the second terminal fitting 50 is positioned to the left. That is, both the electric wires pulled out from the electric wire connection part 12 are made to be in a positional relationship in which they are parallel to each other and separated most. In this state, as shown in FIG. 3, the second engagement portion 16 of the first terminal fitting 10 is caused to enter the mounting hole 57 of the second terminal fitting 50 from above to enter the second terminal fitting 50. The first engaging portion 15 of the first terminal fitting 10 is positioned to the right of the second engaging portion 56 of the second terminal fitting 50. Let Then, the flat plate portion 14 of the first terminal fitting 10 overlaps the upper surface of the flat plate portion 54 of the second terminal fitting 50, and both the engaging portions 15, 16 of the first terminal fitting 10 are of the second terminal fitting 50. It is located below the both engaging portions 55 and 56 by the thickness.

  In the state where the engaging portions 15, 16, 55, 56 are made to correspond to each other in this way, for example, the first terminal fitting 10 is assembled to the second terminal fitting 50 along the plate surface thereof (FIG. 7). Slide in the direction indicated by the arrow). Then, the first engaging portion 15 in the first terminal fitting 10 is engaged in sliding contact with the lower surface of the second engaging portion 56 in the second terminal fitting 50, and in the first terminal fitting 10. The second engagement portion 16 is engaged with the lower surface of the first engagement portion 55 in the second terminal fitting 50 in sliding contact. During this time, the locking protrusions 27 and 67 of the terminal fittings 10 and 50 enter the mating entry grooves 22 and 62 from the receiving ports 24 and 64, respectively, but immediately enter the entry grooves 22 and 62. It enters into the concave grooves 25 and 65, and is thereby brought into a non-contact state with the groove surfaces of the entrance grooves 22 and 62 at the start of entry. After entering the entrance grooves 22 and 62, the locking protrusions 27 and 67 reach the inner surfaces of the entrance grooves 22 and 62 on the inner surfaces of the recess grooves 25 and 65 (groove edges of the entrance grooves 22 and 62). On the other hand, it slides in a taper shape in the displacement direction, and accordingly, both the extended portions 21 and 61 are bent and deformed in the plate thickness direction.

  Thereafter, when the locking projections 27 and 67 pass through the entrance grooves 22 and 62 and fit into the locking holes 18 and 58, both the extended portions 21 and 61 are elastically restored to the original, and the locking projections 27 and 67 are also restored. The locking edge portions 26 and 66 of the locking holes 18 and 58 are opposed to the locking holes 18 and 58 in the removal direction, and the locking projections 27 and 67 are locked to the locking holes 18 and 58 in a locking state. The metal fittings 10 and 50 are held in the detachment restricted state. At this time, as shown in FIGS. 5 and 8, the locking protrusion 27 of the first terminal fitting 10 is fitted into the locking hole 58 of the second terminal fitting 50 from below, so that the second terminal fitting 50 The locking projection 67 is fitted into the locking hole 18 of the first terminal fitting 10 from above. Further, in this regular assembly position, the mounting holes 17 and 57 of the terminal fittings 10 and 50 are aligned with each other so that the mounting bolts can be received, and the flat plate portions 14 and 54 of the terminal fittings 10 and 50 are received. And the engaging portions 15, 16, 55, 56 are in contact with each other in the vertical direction, and separation in the thickness direction is also restricted. Further, the front and rear ends of each of the mating engagement portions 15, 16, 55, 56 are fitted into the slits 19, 29, 59 of the respective engagement portions 15, 16, 55, 56. A large locking allowance between the joint portions 15, 16, 55, and 56 is ensured. Thus, both terminal fittings 10 and 50 are assembled in a state where they are overlapped in the thickness direction and the mounting holes 17 and 57 are aligned.

  As described above, according to the present embodiment, the engaging protrusions 27 and 67 enter the entrance grooves 22 and 62 from the receiving ports 24 and 64 during the assembly process of the both terminal fittings 10 and 50, Since the frictional resistance received by the stop protrusions 27 and 67 from the terminal main bodies 11 and 51 side can be kept small, the operating force can be reduced and the workability is improved. On the other hand, in a state where both terminal fittings 10 and 50 have reached the proper assembly position, the locking projections 27 and 67 are fitted into the locking holes 18 and 58 and the locking edge portions of the locking holes 18 and 58 are engaged. Since it is locked to 26, 66 in a retaining state, the assembled state of both terminal fittings 10, 50 can be maintained firmly. In particular, since the groove widths of the entry grooves 22 and 62 are gradually narrowed from the receiving ports 24 and 64 toward the locking holes 18 and 58, the locking protrusions 27 and 67 enter the entry grooves 22 and 62. At the start, the frictional resistance received by the locking projections 27 and 67 from the locking holes 18 and 58 side can be reduced or eliminated, and the locking projections 27 and 67 are fitted in the locking holes 18 and 58. Then, it is possible to secure a sufficiently large locking allowance between the locking protrusions 27 and 67 and the locking edges 26 and 66 of the locking holes 18 and 58.

  Further, since the locking edges 26 and 66 of the locking holes 18 and 58 in the terminal bodies 11 and 51 are divided by the openings of the entry grooves 22 and 62, the locking strength may be weak. According to the present invention, the pair of extension portions 21 and 61 projecting into the mounting holes 17 and 57 through which the mounting bolts pass are provided on both sides of the terminal bodies 11 and 51 with the entry grooves 22 and 62 interposed therebetween. Therefore, it is possible to prevent the locking strength of the locking edges 26 and 66 from being weakened by the reinforcement by both the extended portions 21 and 61, and to securely lock the locking protrusions 27 and 67. Can do.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The locking hole and the locking protrusion may be arranged on the corner side of the terminal body.
(2) The entrance hole of the entrance groove may be opened at the outer edge of the terminal body.
(3) The approach groove may extend in the same direction in the length direction.
(4) The recessed groove may be omitted, and the groove edge of the entering groove may be configured to be flat at the same height as the plate surface of the terminal body.
(5) The present invention can also be applied to terminal fittings for purposes other than grounding.

In Embodiment 1 of this invention, the top view of the 1st terminal metal fitting which comprises one of both terminal metal fittings Plan view showing the state before assembling both terminal fittings Plan view showing the state at the start of assembly of both terminal fittings Plan view showing a state in the middle of assembling both terminal fittings Plan view showing a state where both terminal fittings are properly assembled Sectional view showing the state before both terminal fittings are assembled Sectional view showing the state at the start of assembly of both terminal fittings Sectional view showing a state where both terminal fittings are properly assembled

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... 1st terminal metal fitting 11, 51 ... Terminal body 17, 57 ... Mounting hole 18, 38 ... Locking hole 21, 61 ... Expansion part 22, 62 ... Entrance groove 24, 64 ... Receiving port 25, 65 ... Groove 26, 66 ... locking edge portion 27, 67 ... locking protrusion 50 ... second terminal fitting

Claims (3)

A pair of terminal bodies that are formed to be slidable with each other, and are assembled by overlapping the plate surfaces;
A locking hole provided in the plate surface of the both terminal bodies,
It is provided on the plate surface of the both terminal bodies, and is relatively displaced along the mating plate surface in the process of assembling the both terminal bodies, and is elastically inserted into the mating locking hole when the both terminal bodies are assembled. And a locking protrusion that is locked to the locking edge of the locking hole and is locked out.
The terminal main body extends in the displacement direction of the terminal main body, and one end of the terminal main body is opened as a receiving port for the locking protrusion, and the other end is a locking edge of the locking hole. A combination terminal fitting characterized in that an entrance groove of the locking projection is provided, which is partially cut away while leaving a locking allowance with the portion and faces into the locking hole.   2. The combination terminal fitting according to claim 1, wherein a groove width of the entry groove is gradually narrowed from the receiving port toward the locking hole. The terminal body is provided with a mounting hole through which a mounting bolt passes, the entry groove communicates between the mounting hole and the locking hole, and
3. The combination according to claim 1, wherein a pair of extension portions projecting into the mounting hole are provided on both sides of the terminal body with the entry groove interposed therebetween. Terminal fitting.

Images