JP2010092697A - Terminal connection structure to battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure having a rotation preventing mechanism of a terminal metal fitting. <P>SOLUTION: A terminal fixing part 30 is formed at a terminal body part 21 having a post connection 22 connected to a battery post 12, terminal connections 41, 51 of two first and second terminals 40, 50 having bolt insertion holes 42, 52 are laminated on each other and inserted by a stud bolt 35 erected at the terminal fixing part 30, and the terminal connections 41, 51 are laminated and fixed on the terminal fixing part 30 by fastening a nut 38. At the terminal connection 41 of the first terminal 40 on the lower side, a pair of rotation preventing pieces 44 is provided which can be locked while holding both end edges of the terminal fixing part 30. At the tip edge of the terminal connection 51 of the second terminal 50 on the upper side, an engagement part 55 is formed in a semi-circular shape which can be pinched between the pair of rotation preventing pieces 44 by being bent downward. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure of a portion for connecting a plurality of terminals to a battery.

Conventionally, what was described in patent document 1 is known as an example of the terminal connection structure to a battery. This is provided with a battery terminal in which a stud bolt is erected at a predetermined position of a terminal main part having a post connection part, and the post connection part of the battery terminal is connected to the battery post, while a bolt insertion hole is formed. The terminal fitting is inserted into the stud bolt, and the terminal fitting is fixed by tightening a nut screwed into the stud bolt. A plurality of terminal fittings are laminated and inserted into the stud bolt, and the terminal fittings are fixed in a laminated state by tightening nuts.
Here, means for restricting the rotation of the terminal fitting when the nut is fixed by tightening the nut is taken, for example, the both side edges of the terminal main part of the battery terminal are attached to the both side edges of the terminal fitting. What provided the pair of detent | locking piece which holds and latches is known.
JP 2006-338999 A

However, when using a plurality of terminal fittings stacked and inserted as described above, in the case of terminal fittings placed on top of each other, a detent mechanism using the terminal main part of the battery terminal due to space or other reasons May not be able to form, and the countermeasure was eagerly desired.
The present invention has been completed based on the above circumstances, and an object of the present invention is to be able to form a detent mechanism for terminal fittings.

  In the terminal connection structure to the battery of the present invention, the bolt of the battery terminal in which the bolt is erected at a predetermined position of the terminal main body portion having the post connection portion connected to the battery post has a plurality of bolt insertion holes. The terminal fittings are stacked and inserted, and the nuts screwed into the bolts are tightened to fix the terminal fittings in a laminated state. Is provided with an anti-rotation piece for locking to the side edge of the terminal main portion of the battery terminal, and the upper terminal fitting is bent toward the lower terminal fitting and engages with the anti-rotation piece. It is characterized in that an engaging portion that is prevented from rotating is provided.

  The lower terminal fitting is prevented from rotating by the detent pieces provided therein being locked to the side edges of the terminal main portions of the battery terminals, and the upper terminal fitting is provided to the engaging portion provided therein. However, it is prevented from rotating by engaging with the rotation preventing piece of the lower terminal fitting that has been prevented from rotating as described above. That is, it is possible to secure the anti-rotation function even for terminal fittings that cannot be rotated using the battery terminals, and as a result, it is possible to efficiently perform the work of fixing a plurality of terminal fittings by tightening nuts.

The following configuration may also be used.
(1) A pair of the locking pieces provided on the lower terminal fitting are provided so as to hold and lock both side edges of the terminal main portion of the battery terminal, and to the upper terminal fitting. The provided engaging portion is formed in a substantially semicircular shape so as to be sandwiched between the pair of detent pieces. The both ends of the substantially semicircular engaging portion provided on the upper terminal fitting are respectively brought into contact with the pair of rotation preventing pieces of the lower terminal fitting, thereby preventing the upper terminal fitting from rotating. By making the engaging part substantially semicircular, the strength of the engaging part itself is high, and the anti-rotation function can be fulfilled more firmly.

  (2) The engaging portion provided on the upper terminal metal fitting is connected to the main terminal portion of the battery terminal or the lower terminal metal fitting in a state where the upper terminal metal fitting is overlapped with the lower terminal metal fitting. Furthermore, it is fastened to a hanging length that does not interfere with the terminal fittings arranged on the lower side. The upper and lower terminal fittings can be stacked in close contact with each other.

  According to the present invention, it is possible to secure the anti-rotation function even for terminal fittings that cannot be rotated using battery terminals.

<Embodiment 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. In the present embodiment, when two terminal fittings are connected to the battery 10 mounted on the automobile via the battery terminal 20, and the device mounting bracket 70 can be attached to the battery terminal 20. Is illustrated. The two terminal fittings are, for example, a first terminal 40 connected to a starter and a second terminal 50 connected to a fusible link (hereinafter simply referred to as FL). On the other hand, the bracket 70 functions to mount the current sensor 60.

  As shown in FIGS. 2 and 5, the battery 10 has a structure in which a battery post 12 is erected on the upper surface of a battery body 11 having a substantially box shape. The battery post 12 is formed in a truncated cone shape whose upper surface side is gradually reduced in diameter due to lead or the like, and is placed on the pedestal 13 at a position within a predetermined dimension from one edge of the upper surface of the battery body 11 described above. Is provided. A battery terminal 20 is connected to the battery post 12.

  As shown in FIGS. 1 and 2, the battery terminal 20 includes a terminal main body 21 formed by pressing a thick metal plate having excellent conductivity, and one end of the terminal main body 21. A post connecting portion 22 connected to the battery post 12 is formed on the side, and a terminal fixing portion 30 for fixing the first terminal 40 and the second terminal 50 on the other end side is formed. A bracket 70 provided on the current sensor 60 can be attached to the terminal fixing portion 30 in an overlapping manner.

  The post connecting portion 22 includes a fastening ring 23 having an arc shape of a little over 3/4 circle that is externally fitted to the battery post 12 and a pair of extension members that extend from both ends of the fastening ring 23 so as to face each other. It consists of an exit plate 24. The fastening ring 23 has a diameter dimension that allows loose fitting to the battery post 12 in a natural state. Bolts 25 are fitted through the pair of extension plates 24, and nuts 26 are screwed onto projecting end sides of the bolts 25 from one extension plate 24. Is adjusted to increase or decrease the distance between the two extension plates 24, and consequently the diameter of the fastening ring 23 is increased or decreased (reduced or expanded). By adjusting the tightening amount of the bolt 25, the post connecting portion 22 can be held in a connected state with respect to the battery post 12 with a desired holding force.

  Flange 28 is formed on the left and right lower edge portions of the fastening ring 23, and a positioning recess 29 is notched in each flange 28. On the other hand, the pedestal 13 of the battery post 12 is formed with a protrusion 15 that fits into each positioning recess 29. By fitting both positioning recesses 29 to the corresponding protrusions 13, positioning when the battery terminal 20 is placed on the upper surface of the battery body 11 and rotation prevention are achieved.

As shown in FIG. 3, the terminal fixing portion 30 is formed in a flat box shape in which front and rear surfaces (a surface facing the post connection portion 22 and a surface on the opposite side) are opened. In the terminal fixing portion 30, a head portion 36 of the stud bolt 35 is accommodated, and a shaft portion 37 protrudes upward through an insertion hole 32 formed in the upper plate 31U. The head 36 of the stud bolt 35 is formed in a flat rectangular shape, and is prevented from rotating by a locking plate 33 standing on the rear edge of the lower plate 31D being applied to one side thereof. In other words, the shaft portion 37 of the stud bolt 35 is prevented from rotating on the upper plate 31U of the terminal fixing portion 30 and stands.
Accordingly, the terminal fittings (the first terminal 40 and the second terminal 50) are placed on the upper surface of the terminal fixing portion 30 while inserting the stud bolt 35 (shaft portion 37). A nut 38 is screwed onto the shaft portion 37 of the stud bolt 35.

Next, the terminal fitting will be described. Both terminals 40 and 50 are formed by pressing a metal plate having excellent conductivity.
The first terminal 40 is connected to a terminal of a relative thick wire (not shown) drawn from the starter, and is formed in an L shape as a whole as shown in FIGS. 1 and 2. The horizontal part of the figure is a terminal connection part 41 fixed on the terminal fixing part 30 of the battery terminal 20 described above, and the hanging part is an electric wire connection part 47 connected to the end of a thick wire. It has become.
The terminal connection portion 41 has a short band shape, the tip edge is formed in a semicircular shape, and a bolt insertion hole through which the shaft portion 37 of the stud bolt 35 can be inserted at the center of the semicircle. 42 is formed. The electric wire connecting portion 47 has a length nearly twice that of the terminal connecting portion 41, and a barrel 48 that is crimped to the end of the electric wire is provided at a lower position.

A pair of detent pieces 44 are formed at the left and right side edges of the terminal connection portion 41 of the first terminal 40, specifically, at a position immediately after the semicircular portion 43. The pair of detent pieces 44 are formed by bending a tongue piece protruding in the left-right direction at a right angle downward, and the left and right sides of the terminal fixing portion 30 in the battery terminal 20, more specifically, The upper portions at positions slightly rearward from the central portion in the lengthwise direction of the side surfaces are formed to face each other in a parallel posture so that they can be held with a slight clearance.
Locking pieces 45 functioning to prevent the cover 80 (see FIG. 10) from coming off are formed on the left and right sides in a horizontal posture at a rear position spaced apart from the position where the rotation prevention piece 44 is formed.

  The second terminal 50 is connected to a terminal of a relative thin wire (not shown) drawn from the FL, and is formed in an L shape as a whole as shown in FIG. Similarly, the horizontal portion becomes the terminal connection portion 51 placed on the upper surface of the terminal connection portion 41 of the first terminal 40 described above, and the hanging portion becomes the wire connection portion 57 connected to the end of the thin wire. Yes. However, as compared with the first terminal 40, the terminal connection portion 51 is about twice as long and the wire connection portion 57 is slightly shorter.

Similarly, the terminal connection portion 51 has a semicircular tip edge, and a bolt insertion hole 52 is formed at the center of the semicircle. The diameter of the semicircle of the terminal connection portion 51 of the second terminal 50 is set slightly larger than the diameter of the semicircle of the terminal connection portion 41 of the first terminal 40. At the lower end of the wire connecting portion 57, a barrel 58 that is crimped to the end of the thin wire is provided.
The anti-rotation structure of the second terminal 50 will be described later.

  Next, the current sensor 60 and the bracket 70 will be described. As shown in FIG. 7, in the current sensor 60, a detection unit (not shown) such as a coil for detecting a current flowing through the electric wire toward the FL is embedded in a synthetic resin housing 61 by molding or the like. It is formed in a block shape that is slightly flat in the front-rear direction. The housing 61 is formed with a horizontally long through-hole 62 so as to penetrate the front and rear surfaces, and the terminal connection portion 51 of the second terminal 50 is inserted through the front surface from the rear surface side. It has become.

  A bracket 70 is attached to a position above the projecting position of the second terminal 50 on the front surface of the housing 61. The bracket 70 is made of a metal plate, and has a rising portion at the rear end of the horizontal portion, and is formed in an L shape as a whole. The horizontal portion is a terminal connection portion 71 that is fixed on the terminal fixing portion 30 of the battery terminal 20, and the rising portion is a mounting portion 77 for the housing 61.

  A bolt insertion hole 72 through which the shaft portion 37 of the stud bolt 35 can be inserted is formed at the distal end side of the terminal connection portion 71. In addition, a pair of front detent pieces 74 are formed on the distal ends of the left and right side edges of the terminal connection portion 71. The front-side detent piece 74 is formed by bending a tongue piece wider than the detent piece 44 of the first terminal 40 downward at a right angle. The pair of front detent pieces 74 have a slight clearance in the upper part of the left and right side surfaces of the terminal fixing portion 30 of the battery terminal 20 in the front region of the position where the detent pieces 44 of the first terminal 40 are disposed. So that they can be held by each other in parallel.

Further, a pair of rear detent pieces 75 are formed at a rear position at a predetermined interval from the front detent pieces 74 on the left and right side edges of the terminal connection portion 71. The distance between the front-side detent piece 74 and the rear-side detent piece 75 is an interval at which the above-described detent piece 44 and the locking piece 45 of the first terminal 40 can be fitted and released.
The pair of rear-side detent pieces 75 are formed by bending a tongue piece having a width about half that of the front-side detent pieces 74 at a right angle downward, and are spaced apart from each other by a slightly smaller distance than the front-side detent pieces 74. It is formed in a parallel posture. The pair of rear-side detent pieces 75 can come into contact with the rear side of each locking piece 45 of the first terminal 40.

  A mounting groove 64 in which the mounting portion 77 of the bracket 70 can be press-fitted from above is formed on the front surface of the housing 61 of the current sensor 60. When the mounting portion 77 of the bracket 70 is press-fitted into the mounting groove 64 from above and pushed into the normal position, the terminal connecting portion 71 is mounted in a state of protruding forward in a horizontal posture. Further, when the terminal connection portion 51 of the second terminal 50 protrudes forward from the through hole 62, the second terminal 50 can be disposed so as to overlap the lower surface side of the bracket 70.

Now, a structure for preventing the rotation of the second terminal 50 will be described. The semi-circular tip edge of the terminal connection portion 51 of the second terminal 50 is formed with a flange that is bent at a right angle downward over its entire length (semicircumference), that is, an engagement portion 55 having a semicircular shape is formed. Has been. 4 and 8, when the terminal connection portion 51 of the second terminal 50 is overlapped with the upper surface of the terminal connection portion 41 of the first terminal 40 in a state where the centers of the bolt insertion holes 52 and 42 are aligned. As described above, the semicircular engaging portion 55 of the terminal connection portion 51 of the second terminal 50 covers the outer side of the tip edge forming the semicircular shape of the terminal connection portion 41 of the first terminal 40 and is connected to the terminal connection portion 41. It is arranged so as to be sandwiched between the left and right rotation stoppers 44 provided. In other words, both end surfaces 56 of the engaging portion 55 come into contact with the front surfaces of the left and right rotation stopper pieces 44.
The hanging length h of the engaging portion 55 (the length from the lower surface of the terminal connecting portion 41 to the lower end of the engaging portion 55) is the thickness of the terminal connecting portion 41 of the first terminal 40 as shown in FIG. It is set to the following dimension.

  When the bracket 70 of the current sensor 60 is further overlapped with the upper surface of the upper second terminal 50, both ends of the engaging portion 55 are located inside the front detent piece 74 of the bracket 70 as shown in FIG. 8. The terminal connection portion 71 of the bracket 70 is overlaid on the upper surface of the terminal connection portion 51 of the second terminal 50 in the state of being accommodated in this space.

This embodiment has the structure as described above, and the operation thereof will be described subsequently. First, the case where the 1st terminal 40 and the 2nd terminal 50 are connected with respect to the battery 10 is illustrated.
First, as shown in FIG. 2, the fastening ring 23 that constitutes the post connection portion 22 of the battery terminal 20 is fitted into the battery post 12, and the left and right positioning recesses 29 formed in the flange 28 at the lower edge portion are formed as pedestals. The battery terminal 20 is positioned by being fitted to the left and right protrusions 15 formed on the base plate 13. Subsequently, the bolt 25 and the nut 26 attached to the extension plate 24 of the tightening ring 23 are tightened with an appropriate tool, so that the tightening ring 23 is reduced in diameter to hold the battery post 12, that is, the battery. The post holding portion 22 of the terminal 20 is held in a state of being connected to the battery post 12. In addition, the battery terminal 20 is mounted in a state in which it is prevented from rotating at a predetermined position on the upper surface of the battery body 11.

  From this state, as shown in FIGS. 2 and 3, the first terminal 40 connected to the end of the thick wire drawn from the starter is in a posture in which the terminal connection portion 41 faces the battery post 12. The terminal connection portion 41 is applied to the upper surface of the terminal fixing portion 30 of the battery terminal 20 while passing the bolt insertion hole 42 through the shaft portion 37 of the stud bolt 35. At this time, the pair of left and right rotation-preventing pieces 44 provided on the terminal connection portion 41 hold the upper portion of the left and right side surfaces of the terminal fixing portion 30 at a position slightly behind the central portion in the length direction. Arranged. The wire connecting portion 47 of the first terminal 40 is disposed downward along the one side surface of the battery body 11.

  Next, the second terminal 50 connected to the end of the thin wire drawn out from the FL is in a posture in which the terminal connection portion 51 faces the battery post 12, and the terminal connection portion 51 is connected to the bolt insertion hole 32. Is passed through the stud bolt 35 (shaft portion 37) and overlapped on the upper surface of the terminal connection portion 41 of the first terminal 40 mounted earlier. At this time, as shown in FIGS. 4 and 6, the semicircular engagement portion 55 provided at the distal end edge of the terminal connection portion 51 of the second terminal 50 is the semicircular shape of the terminal connection portion 41 of the first terminal 40. The outer edge of the front end edge forming the above is covered and sandwiched between the left and right rotation-preventing pieces 44 provided in the terminal connection portion 41. The electric wire connecting portion 57 of the second terminal 50 is also arranged downwardly on the outside of the electric wire connecting portion 47 of the first terminal 40 described above.

  Thus, the terminal connection part 41 of the first terminal 40 and the terminal connection part 51 of the second terminal 50 are sequentially passed through the stud bolt 35 with respect to the upper surface of the terminal fixing part 30 of the battery terminal 20. Once stacked, a nut 38 is screwed onto the upper end of the shaft portion 37 of the stud bolt 35 and tightened with a tool such as a torque wrench. When the final stage is reached, the nut 38 is tightened while the terminal connection part 41 of the first terminal 40 and the terminal connection part 51 of the second terminal 50 are pressed against the upper surface of the terminal fixing part 30.

Here, the lower first terminal 40 has a pair of left and right rotation-preventing pieces 44 provided in the terminal connection portion 41 holding the left and right side surfaces of the terminal fixing portion 30 of the battery terminal 20, and in particular, the wire connection portion. The right rotation-preventing piece 44 viewed from the 47 side is prevented from rotating by hitting the right side surface of the terminal fixing portion 30 that faces the right-hand side. In addition, the upper second terminal 50 is sandwiched between the both anti-rotation pieces 44 of the first terminal 40, in which the semicircular engagement portion 55 provided at the distal end edge of the terminal connection portion 51 is prevented. In particular, the right end face of the engagement portion 55 is similarly prevented from coming into contact with the right rotation stop piece 44.
Therefore, the work of fixing both terminals 40 and 50 to the terminal fixing part 30 by tightening the nut 38 can be efficiently performed in a short time while avoiding the first terminal 40 and the second terminal 50 being rotated. it can.

  In addition, since the hanging length h of the engaging portion 55 is limited to a dimension equal to or smaller than the thickness of the terminal connecting portion 41 of the first terminal 40, the hanging lower end of the engaging portion 55 is the terminal fixing portion of the battery terminal 20. The lower surface of the terminal connection portion 51 of the second terminal 50 can be reliably overlapped with the upper surface of the terminal connection portion 41 of the first terminal 40 without hitting the upper surface of the terminal 30.

  Moreover, when removing the 1st terminal 40 and the 2nd terminal 50 from the battery terminal 20, the nut 38 fastened by the stud bolt 35 is loosened and removed, but in that case, the lower first terminal 40 is The left-hand detent piece 44 provided in the terminal connection portion 41 hits the left-hand side surface of the terminal fixing portion 30, and the upper second terminal 50 has the left-side end surface of the engaging portion 55 turned to the left-hand side. By hitting the stop piece 44, the rotation of each is restricted, and the nut 38 is smoothly removed.

On the other hand, in addition to connecting the first terminal 40 and the second terminal 50 to the battery terminal 20, when the current sensor 60 is attached via the bracket 70, it is performed as follows. This will be described with reference to FIGS.
In this case, as shown in FIG. 7, the bracket 70 is mounted on the front surface of the housing 61 of the current sensor 60 in a posture in which the terminal connection portion 71 protrudes forward in the manner described above.

  As for the assembly procedure, first, the battery terminal 20 is positioned and fixed at a predetermined position on the upper surface of the battery body 11, and the post holding portion 22 is fitted to the battery post 12 as described above. Fixed. From this state, the terminal connection portion 41 of the first terminal 40 connected to the end of the thick wire drawn from the starter passes through the shaft portion 37 of the stud bolt 35 through the bolt insertion hole 32 and the terminal fixing portion of the battery terminal 20. 30 is applied to the upper surface. Similarly, the pair of left and right anti-rotation pieces 44 of the terminal connection portion 31 hold the upper portion of the left and right side surfaces of the terminal fixing portion 30 at a position slightly behind the center portion in the length direction.

  Next, the terminal connection portion 51 of the second terminal 50 connected to the end of the thin wire drawn from the FL passes through the through hole 62 of the housing 61 of the current sensor 60 and the lower surface side of the terminal connection portion 71 of the bracket 70. Protruding. Then, as shown in FIG. 7, the terminal connection portion 51 of the second terminal 50 is overlaid on the lower surface of the terminal connection portion 71 of the bracket 70 in a state where the centers of the bolt insertion holes 52 and 72 are aligned with each other. The terminal 70 of the first terminal 40 mounted first while the bracket 70 and the terminal connection portions 71, 51 of the second terminal 50 pass through the stud bolt 35 (shaft portion 37) through the bolt insertion holes 72, 52. It is overlaid on the upper surface of the connection part 41.

At this time, as described above, the semicircular engagement portion 55 at the tip edge of the terminal connection portion 51 of the second terminal 50 covers the outside of the terminal connection portion 41 of the first terminal 40, and the same terminal connection portion. It is sandwiched between left and right rotation stoppers 44 provided on 41.
In addition, a pair of left and right front anti-rotation pieces 74 provided on the terminal connection portion 71 of the bracket 70 are held by the anti-rotation pieces 44 of the first terminal 40 on the left and right side surfaces of the terminal fixing portion 30 of the battery terminal 20. In addition to holding the front region at the position, the pair of left and right rear rotation stoppers 75 are in contact with the rear surfaces of the left and right locking pieces 45 of the first terminal 40.

In fixing the first terminal 40, the second terminal 50, and the bracket 70 of the current sensor 60 to the battery terminal 20, the nut 38 screwed into the shaft portion 37 of the stud bolt 35 is connected to the first terminal 40, the second terminal 40, and the second terminal 50. The terminal connection portions 41, 51, 71 of the terminal 50 and the bracket 70 are tightened while being pressed against the upper surface of the terminal fixing portion 30. On the other hand, when the first terminal 40, the second terminal 50, and the bracket 70 of the current sensor 60 are removed, the nut 38 that has been tightened is loosened.
At this time, the lowermost first terminal 40 is prevented from rotating by a pair of left and right rotation-preventing pieces 44 of the terminal connection portion 41 coming into contact with the left and right side surfaces of the terminal fixing portion 30 of the battery terminal 20. The bracket 70 of the uppermost current sensor 60 has a pair of left and right front detents 74 provided on the terminal connection portion 71 that hit the left and right side surfaces of the terminal fixing portion 30 of the battery terminal 20 and a pair of left and right rear rotations. The stopper piece 75 is prevented from rotating when it hits the rear surface side of the locking piece 45 of the first terminal 40 described above.

  With respect to the second terminal 50 sandwiched between the centers, the left and right side edges of the base end side of the terminal connecting portion 51 hit the pair of left and right rear side detent pieces 75 of the bracket 70 that are detented on the upper side and overlapped. Thus, although it is possible to prevent rotation to a certain extent, both end surfaces 56 of the semicircular engaging portion 55 provided at the front end edge of the terminal connecting portion 51 are also connected to both the first terminals 40. By hitting the anti-rotation piece 44, the anti-rotation is more reliably prevented.

As described above, the operation of tightening the nut 38 to fix the first terminal 40, the second terminal 50, and the bracket 70 of the current sensor 60 on the terminal fixing portion 30 of the battery terminal 20, and the first terminal 40, the second terminal The operation of loosening the nut 38 to remove the bracket 50 and the bracket 70 can be performed smoothly and efficiently.
In addition, since the rotation of the second terminal 50 arranged through the through hole 62 of the housing 61 (made of synthetic resin) of the current sensor 60 is positively performed, that is, the swing angle of the terminal connection portion 51 is suppressed to be small. It is possible to prevent the right and left side edges of the terminal connection portion 51 from being pressed against the side wall of the through hole 62 and causing damage.

According to this embodiment, as a structure for preventing rotation of the second terminal 50, the tip edge of the terminal connecting portion 51 is bent downward to form the semicircular engaging portion 55, and the engaging portion 55 Is sandwiched between a pair of left and right rotation stoppers 44 of the first terminal 40 stacked on the lower surface. In other words, the second terminal 50 that is originally not necessary or has no anti-rotation mechanism using the battery terminal 20 due to space or the like is provided with an anti-rotation mechanism using the first terminal 40. .
Therefore, even when the first terminal 40 and the second terminal 50 are fixed without the bracket 70, the second terminal 50 is prevented from rotating, and the operation of tightening or loosening the nut 38 can be performed smoothly and efficiently. it can.
Further, when the bracket 70 is overlapped and fixed, a more reliable detent of the second terminal 50 is also ensured without hindering the overlap.

As shown in FIGS. 10 and 11, when the first terminal 40 and the second terminal 50 are connected to the battery terminal 20, a cover 80 is attached so as to cover them. Conventionally, the lock protrusions 81 provided on the left and right inner surfaces of the cover 80 are engaged with the engagement pieces 45 provided on the left and right side edges of the terminal connection portion 41 of the first terminal 40. The cover 80 was locked in the attached state, but there was a dislike that the locking force was insufficient.
Therefore, when the lock piece 83 provided with the locking collar portion 84 at the tip is suspended from the ceiling surface of the cover 80 and the cover 80 is properly attached, the front side of the terminal fixing portion 30 of the battery terminal 20 is fixed. The locking collar portion 84 is fitted and locked in the opening 30A (see FIG. 3), and the locking force is increased to make it difficult to remove the cover 80.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, the shape of the engaging portion 55A provided on the second terminal 50 is changed. The engaging portion 55A of the second embodiment has a shape that leaves both ends of the semicircular engaging portion 55 shown in the first embodiment, in other words, the half of the terminal connection portion 51 of the second terminal 50. A pair of left and right small engaging portions 55A are formed at both ends of the circular tip edge by bending a small-width tongue piece at a right angle downward.

Then, when the terminal connection portion 51 of the second terminal 50 is overlapped on the upper surface of the terminal connection portion 41 of the first terminal 40 in a state where the centers of the bolt insertion holes 52 and 42 are aligned, as shown in FIG. In addition, the left and right engaging portions 55 </ b> A of the terminal connection portion 51 of the second terminal 50 are opposed to the front surfaces of the left and right locking pieces 44 provided on the terminal connection portion 41 of the first terminal 40.
About another structure, it is the same as that of the said Embodiment 1, and the overlapping description is abbreviate | omitted by attaching | subjecting the same code | symbol about the site | part which has the same function.

  According to the second terminal 50 of the second embodiment, the left and right engaging portions 55 </ b> A provided in the terminal connection portion 51 are in contact with the corresponding anti-rotation pieces 44 of the first terminals 40 arranged in the anti-rotation state. A detent is made.

<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) In the above embodiment, the case where the bracket is overlapped and fixed on the third sheet is illustrated, but the third sheet may be a terminal fitting connected to the terminal of the electric wire.
(2) The present invention can be similarly applied to a type in which four or more terminal fittings including brackets are attached in a stacked manner.
(3) The terminal fitting is not limited to the L shape exemplified in the above-described embodiment, but may have a shape in which the terminal connection portion extends straight from the wire connection portion.

(4) In the above-described embodiment, the upper terminal fitting and the terminal fitting on the uppermost terminal fitting are used to prevent the upper terminal fitting from being rotated by using the rotation stopper piece of the terminal fitting arranged on the lower side. Although the case is illustrated, when three or more terminal fittings are laminated, it is also possible to apply to any upper and lower two sheets in the middle of the lamination, such as the second and third sheets from the bottom.
(5) The battery terminal anti-rotation structure is not limited to the one exemplified in the above embodiment, and other anti-rotation structures such as attaching a non-rotating member to the battery terminal and locking it to the battery body are adopted. May be.

The disassembled perspective view in the case of fixing two terminal metal fittings with respect to the battery terminal which concerns on Embodiment 1 of this invention. Exploded side view Cross-sectional view during assembly Plan view Perspective view when assembly is complete Same part cutaway side view Perspective view of the state during assembly when the current sensor bracket is added and fixed Same part cutaway plan view Perspective view when assembly is complete Partially cutaway side view showing the cover in the process of being applied Partially cutaway side view with cover attached The disassembled perspective view in the case of stacking and fixing two terminal fittings according to Embodiment 2 Plan view of the state during assembly

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Battery 12 ... Battery post 20 ... Battery terminal 21 ... Terminal main part 22 ... Post connection part 30 ... Terminal fixing part 35 ... Stud bolt (bolt)
37 ... Shaft part 38 ... Nut 40 ... First terminal (lower terminal fitting)
41 ... Terminal connecting portion 42 ... Bolt insertion hole 44 ... Non-rotating piece 50 ... Second terminal (upper terminal fitting)
51 ... Terminal connection part 52 ... Bolt insertion hole 55, 55A ... Engagement part

Claims (3)

A plurality of terminal fittings having bolt insertion holes are stacked and inserted into the bolt of the battery terminal in which a bolt is erected at a predetermined position of a terminal main body portion having a post connection portion connected to the battery post, and the bolt In which the terminal fitting is fixed in a laminated state by tightening a nut screwed into
Of the two terminal metal fittings that overlap vertically, the lower terminal metal fitting is provided with a detent piece that is engaged with the side edge of the terminal main portion of the battery terminal, and the upper terminal metal fitting includes the lower side metal fitting. A terminal connection structure to a battery, characterized in that an engagement portion is provided which is bent toward the terminal fitting and is engaged with the detent piece to be detented. The anti-rotation piece provided on the lower terminal fitting is provided with a pair so as to hold and lock both side edges of the terminal main portion of the battery terminal, and provided on the upper terminal fitting. 2. The battery terminal connection structure according to claim 1, wherein the engaging portion is formed in a substantially semicircular shape so as to be sandwiched between the pair of rotation stopper pieces. The engaging portion provided on the upper terminal fitting is a lower portion of the terminal main portion of the battery terminal or the lower terminal fitting in a state where the upper terminal fitting is overlapped with the lower terminal fitting. The terminal connection structure to the battery according to claim 1, wherein the terminal connection structure is secured to a hanging length that does not interfere with a terminal fitting disposed on the battery.

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