JP4869571B2 - Connection terminal structure - Google Patents

Description

  The present invention relates to a structure of a connection terminal that is connected in a state of being inserted into a terminal fixing bolt that is two or more stacked and erected on a wire connection portion, that is, a connection terminal structure.

  The terminal block and the battery terminal are provided with an electric wire connecting portion provided with terminal fixing bolts. The connection terminal connected to the electric wire connection portion is attached to the end of the electric wire, and a bolt insertion hole for insertion into the terminal fixing bolt is formed therethrough. The connection of the connection terminal to the electric wire connection portion is completed by inserting the connection terminal into the terminal fixing bolt and then screwing and tightening the nut to the terminal fixing bolt. By the way, when there are a plurality of connection terminals connected to the electric wire connection part, it is usually difficult to insert the connection terminals one by one into the terminal fixing bolt, so that the work efficiency is deteriorated. It is designed to finish the work with a single insertion. Hereinafter, a battery terminal will be described as an example.

The battery terminal 1 shown in FIG. 9 is disclosed in the following Patent Document 1, and has an annular portion 4 wound around the battery post 3 of the battery 2 and an electric wire connecting portion 5 continuous to the annular portion 4. The battery terminal body 6 is provided. In the annular portion 4, the battery post insertion hole 9 is reduced in diameter by a bolt 7 and a nut 8 as fastening means constituting the battery terminal 1. A terminal fixing bolt 10 is erected in the electric wire connection portion 5, and a connection terminal 12 provided at the end of the electric wire 11 and a connection terminal 14 provided at the end of the electric wire 13 are vertically stacked. Connected with. The connection terminals 12 and 14 are tightened by a nut 15 that is screwed onto the terminal fixing bolt 10 to stabilize the connection. Reference numeral 16 denotes an insulating cover (battery terminal cover) that covers the battery terminal 1.
JP 2002-203535 A (Page 3, FIG. 1)

  In the operation of connecting the connection terminals 12 and 14 to the electric wire connection portion 5, if the connection terminals 12 and 14 are stacked on top and bottom to finish the operation with a single insertion, the following problems occur. End up. That is, when the connecting terminals 12 and 14 stacked vertically are displaced in the longitudinal direction of the terminals, for example, and the bolt insertion holes (not shown) do not match, the connecting terminals 12 and 14 can be inserted into the terminal fixing bolt 10. However, there is a problem that work efficiency deteriorates.

  Each of the connection terminals 12 and 14 is formed with a detent piece 17 on each side thereof. The anti-rotation piece 17 is a protruding piece for restricting the connection terminals 12 and 14 from turning around the terminal fixing bolt 10 in the electric wire connection portion 5. Such a rotation-preventing piece 17 basically does not have a function of regulating the positional displacement in the longitudinal direction of the terminal before the connection terminals 12 and 14 are inserted into the terminal fixing bolt 10. It is.

  With respect to the rotation stopper piece 17, if the rotation prevention piece 17 opens to the outside, the connection terminals 12 and 14 rotate or rattle before the nut 15 is tightened, which is a problem. It has become. In other words, if the rotation stopper piece 17 opens to the outside, the effect of restricting the displacement in the rotational direction of the connection terminals 12 and 14 will be diminished. As a result, there is a problem that work efficiency is deteriorated.

  This invention is made | formed in view of the situation mentioned above, and makes it a subject to provide the connection terminal structure which can improve work efficiency.

The connection terminal structure of the present invention according to claim 1, which has been made to solve the above-described problem, has two or more layers stacked in a state of being inserted into the terminal fixing bolt with respect to the electric wire connecting portion in which the terminal fixing bolt is erected. A connection terminal structure to be connected,
Of the overlapping upper and lower connection terminals, projecting pieces that extend downward are formed on both sides of the upper connection terminal, and an elastic locking part that is bent inward is formed on the projecting piece, and the lower connection terminal On both sides of the terminal, the protruding piece is inserted to form a plugged convex portion on which the side portion of the protruding piece can come into contact, and the plugged convex portion is connected to the lower side. Forming front and rear projections projecting in the left-right direction from both ends of the terminal, and when the number of overlapping connection terminals is three or more, the inserted projection of at least one connection terminal A projecting piece facing portion that allows the outer surface of the projecting piece to come into contact, and when the number of the connecting terminals is two, the projecting piece on the insertion convex portion of the lower connecting terminal It is characterized by forming a facing portion.

According to the present invention having such a feature, when the connection terminals are stacked one on top of the other in order to perform the insertion operation to the terminal fixing bolt of the electric wire connection portion at one time, the protruding piece of the upper connection terminal is located on the lower side. It is inserted into the insertion convex part of the connection terminal. As a result, even if a force that causes a displacement in the longitudinal direction of the terminal is applied to the upper and lower connection terminals, for example, the side of the protruding piece abuts on the insertion protrusion. The positional deviation between the connection terminals is regulated. In addition, even if a force is generated that causes the projecting piece inserted into the inserted convex portion to open, the outer surface of the projecting piece comes into contact with the projecting piece facing portion of the inserted convex portion and the projecting piece itself Opening is regulated.
Further, according to the present invention having such characteristics, when the connection terminals are stacked one above the other, the protruding piece of the upper connecting terminal is inserted into the inserted protrusion of the lower connecting terminal, and the protruding piece The elastic locking part is caught on the lower connection terminal. Thereby, even if a force in the separation direction is applied to the connection terminals stacked vertically, it is difficult to separate them .

A connection terminal structure according to a second aspect of the present invention is the connection terminal structure according to the first aspect, wherein a pair of detent pieces extending downward are formed on both side portions of the lower connection terminal. It is a feature.

According to the present invention having such a feature, when the connection terminals are stacked one above the other, the protruding piece of the upper connecting terminal is inserted into the inserted protrusion of the lower connecting terminal, and the elasticity of the protruding piece The locking part is caught by the lower connection terminal. Further, a pair of detent pieces extending downwardly formed on both sides of the lower connection terminal regulates the displacement of the connection terminals superposed on each other in the left-right direction (arrow R direction). Has an effect.

  The connection terminal structure of the present invention according to claim 3 is the connection terminal structure according to claim 1 or 2, wherein the wire connection part is provided in a battery terminal having an annular part wound around a battery post, The connection terminal having the protruding piece, the inserted protrusion, and the protruding piece facing portion is a terminal connected to the battery post via the battery terminal.

  According to the present invention having such characteristics, a connection terminal structure suitable as a connection terminal connected to the battery terminal is obtained.

  The connection terminal structure according to a fourth aspect of the present invention is the connection terminal structure according to the third aspect, wherein the protruding piece facing portion functions as a locking portion for an insulating cover that covers the battery terminal. It is said.

  According to the present invention having such a feature, when a plurality of connection terminals are connected to the wire connection portion of the battery terminal, and then the insulation cover is attached to the battery terminal, the latching portion of the insulation cover becomes covered with the connection terminal. It is latched by the protrusion piece opposing part of an insertion convex part.

According to this invention described in Claim 1, there exists an effect that the insertion operation | work with respect to the terminal fixing bolt of an electric wire connection part can be reliably performed at once. Therefore, there is an effect that the working efficiency can be improved as compared with the conventional case.
Moreover, according to this invention, there exists an effect that it is difficult to isolate | separate the connecting terminals piled up and down. Therefore, there is an effect that the working efficiency can be further improved.

According to the second aspect of the present invention, when the upper connection terminal and the lower connection terminal are superposed one above the other, the front-rear direction of the connection terminals (
Middle arrow Q direction) and the positional deviation in the direction in which the protruding piece opens can be regulated, and the left and right direction of the connection terminals ( There is an effect that the middle arrow R direction) can you to regulate positional shift also.

  According to the third aspect of the present invention, it is possible to provide a connection terminal structure for a battery terminal.

  According to the present invention described in claim 4, there is an effect that a locking portion for an insulating cover covering the battery terminal can be secured in the connection terminal.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of the connection terminal structure of the present invention (inside the circle is an enlarged view of the main part).

  In FIG. 1, reference numerals 21 and 22 indicate connection terminals provided at each end of the electric wire 23. The connection terminals 21 and 22 are overlapped in the vertical direction, and are inserted into the terminal fixing bolts 25 of the electric wire connection portion 24 in the overlapped state, and are tightened with nuts 26 so that the electric wires are electrically connected to the electric wire connection portion 24. Connected.

  In FIG. 1, the arrow P indicates the vertical direction, the arrow Q indicates the front-rear direction, and the arrow R indicates the left-right direction. Hereinafter, each component will be described.

  The connection terminals 21 and 22 are formed into, for example, a substantially disc shape and a substantially L-shaped strip shape as shown in the figure by punching a metal plate having conductivity and bending it (the terminal shape is an example). ). The connection terminals 21 and 22 have an electrical contact portion 27 that contacts the wire connection portion 24 and a wire crimping portion 28 that crimps the conductor of the wire 23. The electrical contact portions 27 come into contact with each other when the connection terminals 21 and 22 are stacked one above the other. A bolt insertion hole 29 having a diameter slightly larger than the diameter of the terminal fixing bolt 25 is formed through the electrical contact portion 27. The wire crimping portion 28 is formed with a pair of crimping pieces 30.

  A pair of protruding pieces 31 are formed on the electrical contact portion 27 of the connection terminal 21 on the upper side. The protruding pieces 31 are formed on both sides of the connection terminal 21. More specifically, the protruding piece 31 is formed by bending downward a square piece continuous on both sides of the connection terminal 21. Such a protruding piece 31 is formed with an elastic locking portion 32 that is bent inward. The elastic locking portion 32 is a cantilever piece having elasticity, and its tip is formed so as to be hooked on the connection terminal 22 on the lower side. The formation of the elastic locking portion 32 is arbitrary.

  A pair of inserted protrusions 33 and a pair of rotation stoppers 34 are formed on the electrical contact portion 27 of the connection terminal 22 on the lower side. The inserted protrusions 33 and the rotation stoppers 34 are formed on both sides of the connection terminal 22. More specifically, the insertion convex portion 33 is arranged and formed in accordance with the position of the protruding piece 31 of the connection terminal 21 on the upper side. Further, the rotation prevention piece 34 is arranged and formed so as to be arranged next to the insertion protrusion 33.

  The insertion protrusion 33 is formed in a shape that allows the protruding piece 31 of the connection terminal 21 to be inserted. Moreover, the insertion convex part 33 is formed in the shape where the side part 35 of the inserted protrusion 31 can contact | abut. The insertion convex part 33 has the front convex part 36, the rear convex part 37, and the insertion space 38 between these in this form. The front convex part 36 and the rear convex part 37 are formed so as to protrude in the left-right direction (arrow R direction) from both side parts of the connection terminal 22. At the tip of the rear convex portion 37, a protruding piece facing portion 40 that allows the outer surface 39 of the protruding piece 31 to contact is coupled. The protruding piece facing portion 40 may be coupled to the tip of the front convex portion 36 or may be coupled so as to connect the front convex portion 36 and the rear convex portion 37.

  The anti-rotation piece 34 is formed by bending downward a continuous strip on both sides of the connection terminal 22. The anti-rotation piece 34 is formed so as to oppose a side portion 43 (to be described later) of the electric wire connection portion 24 with a close contact or a slight gap.

  As a characteristic of each part of the connection terminals 21 and 22, the protruding piece 31 and the insertion convex portion 33 regulate the positional deviation in the front-rear direction (arrow Q direction) between the connection terminals 21 and 22 that are vertically stacked. Is formed for. Further, the projecting piece 31 is formed in order to restrict the positional deviation in the left-right direction (arrow R direction) between the connection terminals 21 and 22 that are vertically stacked. Moreover, the elastic locking part 32 is formed in order to make it difficult to separate the connection terminals 21 and 22 that are superposed one above the other. Further, the protruding piece facing portion 40 is formed to restrict the opening of the protruding piece 31. Further, the rotation stop piece 34 is formed so as to prevent the connection terminals 21 and 22 superposed on each other from rotating around the terminal fixing bolt 25. Further, in the present invention, the anti-rotation piece 34 is formed to cause the same action as that of the protruding piece 31 when there is another connection terminal below the connection terminal 22.

  The electric wire connection portion 24 includes a terminal fixing bolt 25, a connection terminal contact portion 41 on which the terminal fixing bolt 25 is erected, and a nut 26 that is screwed to the terminal fixing bolt 25. The terminal fixing bolt 25 and the nut 26 are known and will not be described. The connection terminal contact part 41 has an upper part 42 having a contact surface and a side part 43 continuous with the upper part 42. The side portion 43 is bent downward so as to be orthogonal to the contact surface of the upper portion 42.

  In the above configuration, first, when the connection terminals 21 and 22 are overlapped with each other, the protruding piece 31 of the upper connection terminal 21 is inserted into the insertion convex portion 33 of the lower connection terminal 22. Further, the elastic locking portion 32 of the protruding piece 31 of the upper connection terminal 21 is hooked on the lower connection terminal 22.

  At this time, even if an external force in the front-rear direction (arrow Q direction) is applied between the connection terminals 21 and 22, the side portion 35 of the protruding piece 31 comes into contact with the insertion convex portion 33 and the connection terminals 21 and 22 are connected to each other. Is displaced. Further, even if an external force is applied that causes the projecting piece 31 inserted into the inserted convex portion 33 to open, the outer surface 39 of the projecting piece 31 abuts against the projecting piece facing portion 40 of the inserted convex portion 33. Thus, the opening of the protruding piece 31 itself is restricted. Furthermore, even if an external force in the separation direction is applied to the connection terminals 21 and 22, it becomes difficult to separate them.

  Next, when the connection terminals 21 and 22 are inserted into the terminal fixing bolts 25 and tightened with the nuts 26, the electrical connection of the connection terminals 21 and 22 to the wire connection portion 24 is completed.

  According to the present invention, although there are two connection terminals 21, 22, the insertion work of the wire connection portion 24 with respect to the terminal fixing bolt 25 can be reliably performed at one time. Therefore, the connection terminal structure of the present invention can improve the working efficiency compared to the conventional case.

  FIG. 2 is an exploded perspective view of a battery terminal showing another embodiment of the connection terminal structure of the present invention. 3 and 4 are perspective views of the battery terminal, FIGS. 5 and 6 are perspective views of an insulating cover covering the battery terminal, and FIGS. 7 and 8 are perspective views of the battery terminal covered with the insulating cover. . Note that members that are basically the same as those in FIG. 1 are given the same reference numerals, and descriptions thereof are omitted.

  2 to 4, the battery terminal denoted by reference numeral 51 includes a battery terminal main body 52, and bolts 53 and nuts 54 as fastening means. The battery terminal main body 52 has an annular portion 55 wound around a battery post (not shown) of the battery, and an electric wire connecting portion 24 continuous with the annular portion 55. A battery post insertion hole 56 is formed in the annular portion 55. The diameter of the battery post insertion hole 56 is reduced as the bolt 53 and the nut 54 are screwed together.

  Connection terminals 21, 22, and 57 that are stacked one above the other are connected to the wire connection portion 24 of the battery terminal 51. The connection terminals 21, 22, and 57 that are stacked one above the other are connected to the electric wire connection portion 24 while being inserted into the current sensor 58. The current sensor 58 is known and will not be described.

  The connection terminal 57 is formed into, for example, a substantially L-shaped strip shape as shown in the figure by punching a metal plate having conductivity and performing a bending process (the terminal shape is an example). The connection terminal 57 includes an electrical contact portion 27 that contacts the wire connection portion 24 and a wire crimping portion 28 that crimps the conductor of the wire 23. A bolt insertion hole 29 having a diameter slightly larger than the diameter of the terminal fixing bolt 25 is formed through the electrical contact portion 27. The wire crimping portion 28 is formed with a pair of crimping pieces 30.

  A pair of inserted protrusions 59 are formed on the electrical contact portion 27 of the connection terminal 57. The inserted protrusions 59 are formed on both sides of the connection terminal 57. More specifically, the insertion convex portion 59 is arranged and formed in accordance with the position of the protruding piece 31 of the connection terminal 21 on the upper side and the position of the detent piece 34 of the connection terminal 22 on the upper side.

  The insertion convex portion 59 is formed in a shape that allows insertion of the protruding piece 31 of the connection terminal 21 and the detent piece 34 of the connection terminal 22. Moreover, the insertion convex part 59 is formed in the shape where the side part 35 of the protrusion piece 31 inserted and the side part (code | symbol abbreviation | omission) of the rotation prevention piece 34 can contact | abut. The insertion convex part 59 has the front convex part 60, the rear convex part 61, and the insertion space 62 between these in this form. In addition, although it does not specifically limit, the opposing part (what has the function of the protrusion piece opposing part 40) which controls the opening of the rotation prevention piece 34 to the back convex part 61 shall be formed.

  In the above configuration, first, when the connection terminals 21, 22, and 57 are overlapped with each other, the protruding piece 31 of the connection terminal 21 is inserted into the insertion protrusion 33 of the connection terminal 22. Further, the elastic locking portion 32 of the protruding piece 31 of the connection terminal 21 is hooked on the connection terminal 22. Furthermore, the protruding piece 31 of the connection terminal 21 and the rotation-preventing piece 34 of the connection terminal 22 are inserted into the insertion protrusion 59 of the connection terminal 57.

  Next, when the connection terminals 21, 22, and 57 are inserted into the current sensor 58 and inserted into the terminal fixing bolt 25 and tightened with the nut 26, the connection terminals 21, 22, and 57 are connected to the wire connection portion 24. Electrical connection is complete. The connection terminals 21, 22 and 57 are electrically connected to a battery post (not shown) via the battery terminal 51.

  2 to 8, an insulating cover (battery terminal cover) 63 that covers the battery terminal 51 is attached to the battery terminal 51. The insulating cover 63 is formed using an insulating synthetic resin material. In this embodiment, the insulating cover 63 covers the battery terminal 51, the connection terminals 21, 22, and 57, and the current sensor 58 as shown in the figure. It is formed into a shape. Inside the insulating cover 63, a locking projection 64 is formed that is hooked and locked to the protruding piece facing portion 40 of the connection terminal 22 connected to the wire connection portion 24 of the battery terminal 51. When the battery terminal 51 is covered with the insulating cover 63, the locking projection 64 is locked to the protruding piece facing portion 40 of the connection terminal 22, thereby completing the mounting.

  As described above with reference to FIGS. 2 to 8, the connection terminal structure according to the present invention can reliably insert the wire connection portion 24 of the battery terminal 51 into the terminal fixing bolt 25 in one time. It has become. Further, the connection terminal structure of the present invention can secure a locking portion (projecting piece facing portion 40) on which the locking projection 64 of the insulating cover 63 covering the battery terminal 51 is hooked (the locking piece facing portion 40). The portion has the effect of not affecting the displacement of the overlapping connection terminals).

  In addition, it goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

It is a disassembled perspective view which shows one Embodiment of the connecting terminal structure of this invention (the inside is a principal part enlarged view). It is a disassembled perspective view of the battery terminal which shows other embodiment of the connection terminal structure of this invention. It is a perspective view of a battery terminal. It is a perspective view of a battery terminal. It is a perspective view of the insulating cover which covers a battery terminal. It is a perspective view of the insulating cover which covers a battery terminal. It is a perspective view of the state which covered the battery terminal with the insulating cover. It is a perspective view of the state which covered the battery terminal with the insulating cover. It is explanatory drawing which concerns on the connection of the conventional connection terminal.

Explanation of symbols

21 and 22 connection terminals 23 electric wires 24 electric wire connection portions 25 terminal fixing bolts 26 nuts 27 electrical contact portions 28 electric wire crimping portions 29 bolt insertion holes 30 crimping pieces 31 projecting pieces 32 elastic locking portions 33 inserted convex portions 34 detents Piece 35 Side part 36 Front convex part 37 Rear convex part 38 Insertion space 39 Outer surface 40 Projection piece opposing part 41 Connection terminal contact part 42 Upper part 43 Side part 51 Battery terminal 52 Battery terminal main body 53 Bolt 54 Nut 55 Ring part 56 Battery post Insertion hole 57 Connection terminal 58 Current sensor 59 Inserted convex part 60 Front convex part 61 Rear convex part 62 Insertion space 63 Insulating cover 64 Locking protrusion

Claims (4)

A structure of a connection terminal that is connected in an overlapping manner in such a state that it is inserted into the terminal fixing bolt, with respect to the electric wire connecting portion in which the terminal fixing bolt is erected,
Of the overlapping upper and lower connection terminals, projecting pieces that extend downward are formed on both sides of the upper connection terminal, and an elastic locking part that is bent inward is formed on the projecting piece, and the lower connection terminal On both sides of the terminal, the protruding piece is inserted to form a plugged convex portion on which the side portion of the protruding piece can come into contact, and the plugged convex portion is connected to the lower side. Forming front and rear projections projecting in the left-right direction from both ends of the terminal, and when the number of overlapping connection terminals is three or more, the inserted projection of at least one connection terminal A projecting piece facing portion that allows the outer surface of the projecting piece to come into contact, and when the number of the connecting terminals is two, the projecting piece on the insertion convex portion of the lower connecting terminal A connection terminal structure characterized by forming a facing portion. In the connection terminal structure according to claim 1,
A connection terminal structure characterized in that a pair of detent pieces extending downward are formed on both side portions of the lower connection terminal. In the connection terminal structure according to claim 1 or claim 2,
The electric wire connecting portion is provided in a battery terminal having an annular portion wound around a battery post, and the connecting terminal having the protruding piece, the inserted convex portion, or the protruding piece facing portion is provided via the battery terminal. A connection terminal structure characterized by being a terminal connected to the battery post. In the connection terminal structure according to claim 3,
The protruding piece facing portion functions as a locking portion for an insulating cover that covers the battery terminal.

Images