JP3656520B2 - Press contact terminal and joint connector having the press contact terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pressure contact terminal and a joint connector using the pressure contact terminal, and is particularly suitable for a joint connector that needs to form various branch connection circuits, and securely holds a wire to be pressure contacted in a pressure contact position. It is something that can be done.
[0002]
[Prior art]
As shown in FIG. 8, the assembly of the automobile wire harness is divided into a plurality of sub-harnesses (temporary binding harnesses) 1, 2, 3,... 3... Are held by a wiring jig on the wire harness assembly drawing board, and then wound by tape or the like, and then bundled to assemble the wire harness.
[0003]
In the temporary bundling process for forming the sub-harness, the terminal of the electric wire w to be configured is inserted into the connector 4, but the electric wire connected to the connector of the other sub-harness, the electric wire connected to the joint connector, and the device are connected. In the state of the sub-harnesses 1, 2, and 3 in which the terminals 5 connected to the terminals of the electric wires and the like are temporarily bound, they are exposed when they are not inserted into the connector, and are so-called bra terminals.
[0004]
Moreover, as shown in FIG. 9, the joint connector 6 normally used accommodates the joint bus bar 8 in the case 7, and in a state where the sub-harnesses are bundled together, the wires w that need to be joined are connected to the mating connector. 9, the connector 9 is fitted to the joint connector 6, and the circuit is connected via the joint bus bar 8.
[0005]
In contrast to the joint connector, the present applicant has provided a press-fit joint connector shown in FIG. In the pressure welding joint connector 6 ′, a pressure welding joint bus bar 8 ′ having a pressure welding slot 8a ′ arranged in parallel in the case 7 ′ is attached, and the electric wire w is pressure-welded to the pressure welding slot 8a ′ in the temporary binding step. A branch connection is formed by the above, and the joint connector 6 ′ is laminated and integrated in the binding step.
[0006]
[Problems to be solved by the invention]
When inserting a post-insertion terminal into the connector 9 in the main binding process shown in FIG. 9, the post-insertion terminal is likely to be deformed or damaged from the temporary binding process to the main binding process. There is a problem that it is necessary to carry out the post-installation work to the connector of the harness or the joint connector, which requires a lot of work. Further, when connecting the wires of the sub-harness, it is necessary to connect them by splicing, and in this case as well, there is a problem that it takes a lot of work. Furthermore, there is a problem that even if there is a circuit change due to a difference in vehicle type, grade, etc., it cannot be easily handled.
[0007]
When using the pressure welding joint connector 6 ′ shown in FIG. 10, it is possible to eliminate post-insertion terminals in this bundling process and to automate the pressure welding connection of the wires to the pressure welding joint bus bar. Is connected only to the pressure contact location, so the position of the pressure contact may shift due to external force during the movement from the temporary binding process to the final binding process, so the wires may come off from the terminal, and contact failure will occur even if it does not come off. There is a problem in connection reliability.
[0008]
This invention is made | formed in view of the said problem, and when using the said press-contact joint connector, it makes it the subject to be able to fix reliably, without the press-contact position of an electric wire and a press-contact terminal shifting.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention first provides a press contact terminal in which the press contact position does not shift.
That is, firstly , a conductive metal material is formed by bending, via a wire pressure contact portion in which a pressure contact slot is notched from the upper end, and a recess notched from the upper end in one side end of the wire pressure contact portion. There is provided a press contact terminal comprising a wire holding portion refracted at right angles and configured to hold the wire through the recessed portion by folding back the wire press-connected by the wire press contact portion.
Secondly, the conductive metal material is formed by bending, via a wire pressure contact portion in which the pressure contact slot is cut out from the upper end, and a recess notched from the upper end on one end side of the wire pressure contact portion. An electric wire holding portion refracted at a right angle; and an electric wire press-connected by the electric wire pressure contact portion to bend the electric wire holding portion to hold the electric wire; and
A female terminal portion is provided on the other end side of the electric wire pressure contact portion, and a tab-shaped male terminal portion is provided at the same vertical position as the female terminal portion by bending below the electric wire pressure contact portion. We provide pressure contact terminals.
[0010]
As described above, when the electric wire pressure-welded at the wire pressure-welding portion is bent and passed through the recess, it is possible to prevent the displacement of the pressure-welding position. Moreover, it can prevent that an electric wire remove | deviates from an electric wire press-contact part by making it bend so that an electric wire holding part may be wound with respect to the electric wire press-contacted by the electric wire press-contact part. In addition, when winding an electric wire holding | maintenance part by a half circumference, it is made to wind around the upper half circumference of an electric wire, and when winding all around, it is preferable to bend | curve so that an electric wire may be wound from an upper side to a lower side.
[0011]
When the pressure contact terminal is used for a joint connector, the pressure contact terminal of the first invention is also provided with a female terminal portion on the other end side of the wire pressure contact portion and is bent below the wire pressure contact portion to A tab-shaped male terminal portion is provided at the same vertical position as the terminal portion.
Furthermore, it is preferable to form a chained terminal by chaining the press contact terminals in a parallel state via the connecting plate portion.
[0012]
That is, when the above-mentioned pressure contact terminals are connected in parallel through the connecting plate portion to form a pressure contact terminal for a joint, the pressure contact terminals connected by the connecting plate portion are accommodated in a terminal accommodating chamber provided in parallel in the case. ,
The electric wire wired to the case is pressed and connected at the electric wire pressure contact portion and the electric wire is held at the electric wire holding portion, and
The case is arranged in a stacked manner, and holes are provided on the upper and lower surfaces of the case, and the upper and lower female terminal portions and the male terminal portion are fitted and connected through the upper and lower holes, and the wires wired for each case are connected to each other. .
[0013]
It is preferable that the terminal accommodating chamber of the case is provided with a groove portion for press-fitting the tip of the electric wire holding portion in a state where the electric wire holding portion is wound and bent.
[0014]
As described above, when the press contact terminals are arranged in each case and these cases are stacked vertically, and the upper and lower terminals are connected by fitting the male terminal portion and the female terminal portion, the press contact terminals to be connected When the circuit is different due to the difference in the vehicle type or grade, it is possible to easily cope with this circuit change.
[0015]
In particular, one case of the joint connector is connected to each sub-harness, and the electric wire group that is press-connected to the terminals in the case is an electric wire group of one sub-harness, and the required electric wires in the sub-harness are connected to the terminals. Connected by chaining, and when the sub-harness is finally bundled, the above cases are stacked one above the other, and the wires of different sub-harnesses are connected by fitting the male terminal part and female terminal part of the terminal Is preferred. In this way, if the wires connected to the different sub-harnesses are connected to the terminals in the case, the cases are stacked vertically and integrated so that the male terminal portion and the female terminal portion of the terminal By fitting, the wires of the sub-harness can be connected to each other, and the last insertion terminal and the splicing process can be eliminated. Therefore, the sub-harness can be made to be a complete type by eliminating the bra terminal, and the number of work steps in the binding process can be reduced.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1A and 1B show a pressure contact terminal 20 according to the present invention, in which a conductive metal material is punched into a shape shown in FIG. 1B, which is bent, and FIG. ).
[0017]
The pressure contact terminal 20 includes a wire pressure contact portion 21 composed of three vertical plate portions refracted at right angles, a wire holding portion 22, and a female terminal portion 23. The central wire pressure contact portion 21 has a pressure contact slot 21a cut out from the upper end. . The electric wire holding portion 22 that is refracted 90 degrees forward from one side end of the electric wire pressure contact portion 21 is provided with a recess 22 a from the upper end between the electric wire pressure contact portion 21. Further, the female terminal portion 23 that is bent 90 degrees rearward from the other end side to the wire pressure contact portion 21 has a tab fitting groove 23a cut out from the upper end.
[0018]
Further, the tab-shaped male terminal portion 24 is provided by refracting the lower end of the wire pressure contact portion 21 in the horizontal direction and projecting the tip of the refracting portion 25 downward. The male terminal portion 24 is positioned on the same vertical line as the female terminal portion 23, and the male terminal portion 24 is fitted to the female terminal 23 between the press contact terminals 20 and 20 arranged vertically in the orthogonal direction. Can be connected.
[0019]
As shown in FIG. 2, the press contact terminal 20 is connected to the press contact slot 21a of the wire press contact portion 21 through the wire w, and then the wire w is folded and passed through the concave portion 22a. Is prevented.
[0020]
Alternatively, as shown in FIG. 3A, after the pressure contact slot 21a of the wire pressure contact portion 21 is press-connected through the wire, the wire holding portion 22 is bent so as to fall forward of the wire pressure contact portion 21, and the wire w The upper half is held down. In addition, as shown to FIG. 3 (B), you may bend the electric wire holding | maintenance part 22 so that the perimeter of the electric wire w may be wound from the upper side of the electric wire w to the lower side.
[0021]
As shown in FIGS. 4A and 4B, the terminal accommodating chamber 27 of the connector 26 is provided with a groove 28 for press-fitting the distal end portion 22a in a state where the wire holding portion 22 is bent, and is bent. The state is maintained.
[0022]
The pressure contact terminals 20 are preferably provided as chained terminals 40 as shown in FIG. 5, and the pressure contact terminals 20 are chained in a parallel state via the connecting plate portions 30, and the connecting plate portions 30 are adjacent to each other. It is formed between the side surfaces of the male terminal portion 24 of the terminal 20.
The connecting plate portion 30 is folded back when connecting the adjacent press contact terminals 20 so that the pitch P1 is a small pitch between the press contact terminals 20, while the connecting plate is connected when the adjacent press contact terminals 20 are not connected. The part 30 is excised.
[0023]
When the press contact terminal 20 is used for a joint connector, the chain terminal 40 shown in FIG. 5 is used, and the terminal is accommodated in the case 32 as shown in FIG. 6A, and each case 32 (32A, 32B). 6B is connected to the temporarily bundled sub-harnesses A and B, respectively, and the cases 32A and 32B are stacked vertically and integrated during the binding process. For simplification of description, two cases connected to the two sub-harnesses A and B are stacked in two upper and lower stages, but the number of sub-harnesses is increased as necessary to increase the number of cases to 3 Needless to say, the layers may be stacked in layers.
[0024]
The electric wires of the sub-harnesses A and B are respectively connected to the press contact terminals 20 of the chain connection terminals 40 accommodated in the case 32 by wiring the wires that need to be connected to each other in the case 32. ing.
[0025]
The chain connection terminal 40 inserts and locks the terminal 20 in advance in a terminal accommodating chamber 33 provided in parallel with the case 32 attached to each of the sub-harnesses A and B. At that time, as described above, when it is necessary to connect the electric wires to be press-connected to the terminals 20, the connecting plate portion 30 is folded back to be kept in a connected state, such as a double chain or a triple chain. In the terminal accommodating chamber 33, a groove for fitting the connecting plate portion 30 is provided in the partition wall of the terminal accommodating chamber 33. In this way, by connecting the press contact terminals 20 with the connecting plate portion 30 to form a chain, any number of wires in one sub-harness can be connected. In addition, among the electric wires in the sub-harness, the press-contact terminal 20 that is press-connected to the electric wire that is connected only to the electric wires of the other sub-harness cuts the connecting plate portion 30 between the adjacent terminals to release the connection. .
[0026]
As shown schematically in FIG. 7, the case 32 (32A, 32B) has an elongated box shape, and is provided with two terminal housing chambers 33 arranged in parallel in the left-right direction for housing the chain connection terminals 40. . The upper surface of the case 32 is an opening, and the terminal holes 35 for projecting tabs are provided on the bottom surface at positions corresponding to the bottom surfaces of the terminal housing chambers 33. Further, a groove 36 a for fitting the connecting plate portion 30 is provided in the partition wall 36 that partitions the terminal accommodating chamber 33. Furthermore, electric wire insertion grooves 37a, 38a are provided in the partition wall 38 that partitions the front wall 37 of the case 32 and the front and rear terminal accommodating chambers.
Furthermore, the case 32 has a shape in which the peripheral walls can be fitted to each other so that the cases 32A and 32B connected to the sub-harnesses A and B, respectively, are stacked vertically and integrated at the time of this binding, A lock portion (not shown) for fixing is provided.
[0027]
Next, the assembly method will be described. After the wires w of the sub-harnesses A and B are wired to the cases 32A and 32B, the wires w are passed through the terminal accommodating chambers 33 in each row, and then the wires w are pressed to the press contact terminals 20. The electric wire w is press-connected to the press contact terminal 20 by being pushed into the slot 21a. Thereafter, the electric wire w is held by the electric wire holding part 22 as described above.
[0028]
At that time, the terminals 20 are accommodated in all of the terminal accommodating chambers 32, and the electric wires w can be press-connected to all the contact terminals 20, and the electric wires w are only press-connected to the necessary press contact terminals 20. In addition, only the press contact terminal 20 to be press-connected to the electric wire w may be accommodated in the terminal accommodating chamber 33. Note that if the press contact terminals 20 are accommodated in all the terminal accommodating chambers 33 of the case 32, it is only necessary to change the press contact terminals 20 that are in press contact with the electric wires w according to the circuit change. .
[0029]
The electric wire of the sub harness A is connected to the case 32A, while the electric wire of the sub harness B is connected to the case 32B. These sub-harnesses A and B are manufactured separately. In this binding step, the cases 32A and 32B are stacked one above the other and integrated. When moving from the temporary binding step to the main binding step, the electric wire w press-connected to the press contact terminal 20 can be prevented from being positioned and retained from the press contact slot by the wire holding portion 22, thereby improving electrical connection reliability. it can.
[0030]
When the upper and lower cases 32A and 32B are combined as described above, the male terminal portion 24 of the press contact terminal 20 in the upper case 32A is inserted into the female terminal portion 23 of the press contact terminal 20 of the lower case 32B that overlaps downward through the terminal hole, The press contact terminals 20 accommodated on the same straight line of the upper and lower cases 32A and 32B are connected.
[0031]
As a result, the electric wires to be connected to the sub-harnesses A and B can be electrically connected to the press contact terminals 20 of the upper and lower cases. In this way, the electric wires to be connected to each other in the sub-harnesses A and B can be connected to the press contact terminals 20 in the cases 32A and 32B in the temporary binding process of the sub-harness, and are exposed to the main binding process. The sub-harness can be made a complete type.
[0032]
【The invention's effect】
As apparent from the above description, according to the present invention, first, the wire holding portion is provided in the press contact terminal, so that the press contact state of the wire can be maintained, and the displacement and the disconnection of the wire from the press contact slot are prevented. be able to. As a result, electrical connection reliability can be improved. Moreover, when using it by inserting in the case of a joint connector, a press-contact state can be hold | maintained also at the time of the movement from a temporary binding process to this binding process.
[0033]
In addition to the wire pressure contact part and the wire holding part, if it has a male terminal part and a female terminal part on the top and bottom, and is connected to the connecting plate part, it can be suitably used as a terminal for a joint connector. In particular, if a press contact terminal is inserted into the case for each sub-harness and connected to the electric wire, the cases can be connected to the electric wires of other sub-harnesses by stacking and integrating the cases together. . Therefore, the post-insertion terminal of the sub-harness can be eliminated, the splice connection between the electric wires can be eliminated, and the assembly workability of the wire harness can be improved.
[0034]
Further, if a case containing a pressure contact terminal is provided in the case, the circuit can be easily changed by simply changing the pressure contact position with the electric wire. Therefore, it is possible to easily cope with the case where the circuit configuration changes due to the different vehicle type or grade of the automobile, and it is possible to share the case containing the connection terminal.
[Brief description of the drawings]
FIG. 1 shows a press contact terminal according to an embodiment of the present invention, in which (A) is a perspective view and (B) is a developed view.
FIG. 2 is a view showing a state in which an electric wire press-contacted to a terminal is held by an electric wire holding portion.
FIGS. 3A and 3B are views showing a state in which an electric wire press-contacted to a terminal is held by an electric wire holding portion by another method.
FIGS. 4A and 4B are cross-sectional views showing a state in which the press contact terminal is inserted into a connector.
FIG. 5 is a perspective view when the pressure contact terminals are formed in a chain shape.
6A is an exploded perspective view of a joint box, and FIG. 6B is a schematic perspective view of an assembled state.
7A is a schematic plan view of a case of the joint box, and FIG. 7B is a schematic bottom view.
FIG. 8 is a drawing showing a conventional method for forming a wire harness.
FIG. 9 is a schematic view showing a conventional joint connector.
FIG. 10 is a schematic view of another conventional joint box.
[Explanation of symbols]
A, B Sub-harness w Electric wire 20 Pressure contact terminal 21 Wire pressure contact portion 22 Electric wire holding portion 23 Female terminal portion 24 Male terminal portion 30 Connecting plate portion 40 Chain terminal 32 (32A, 32B) Case

Claims (5)

It is formed by bending a conductive metal material, and it is refracted at right angles through a wire pressure contact portion where a pressure contact slot is cut out from the upper end and a recess cut out from the upper end at one side end of the wire pressure contact portion. A press-contact terminal comprising a wire holding portion, configured to fold back the wire press-connected at the wire press- contact portion and pass the wire through the recess to hold the wire. Provided with a female terminal portion to the other end of the electric wire pressure contact portion, characterized in that by bending downward of the electric wire crimping section and a male terminal portion of the tab-shaped vertically same position as the female terminal portions The press contact terminal according to claim 1. An electric wire formed by bending a conductive metal material and refracted at a right angle through a wire pressure contact portion in which a pressure contact slot is notched from the upper end and a recess notched from the upper end on one end side of the wire pressure contact portion. A holding part, configured to hold the electric wire by bending the electric wire holding part to the electric wire press-connected by the electric wire pressure-welding part; and
A female terminal portion is provided on the other end side of the electric wire pressure contact portion, and a tab-shaped male terminal portion is provided at the same vertical position as the female terminal portion by bending below the electric wire pressure contact portion. Pressure contact terminal. The press contact terminal according to claim 2 or 3 is used as a press contact terminal for a joint by chaining in a parallel state via a connecting plate portion.
The press contact terminals chained by the connecting plate part are accommodated in a terminal accommodating chamber provided in parallel in the case,
The electric wire wired to the case is pressed and connected at the electric wire pressure contact portion and the electric wire is held at the electric wire holding portion, and
The above case is arranged in a stacked manner, and holes are provided on the upper and lower surfaces of the case, and the upper and lower female terminal portions and the male terminal portion are fitted and connected through these upper and lower holes to connect the wires wired for each case. Joint connector.   The joint connector according to claim 4, wherein the terminal housing chamber of the case is provided with a groove portion for press-fitting the tip of the electric wire holding portion in a state where the electric wire holding portion is wound and bent.

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