JP5065129B2 - Crimp terminal and electric wire with crimp terminal - Google Patents

Description

  The present invention relates to a crimp terminal attached to a terminal portion of an insulation-coated electric wire and an electric wire in which the crimp terminal is attached to the terminal portion.

  As a crimp terminal connected to the terminal part of the electric wire from which the end part of the core wire is led out from the end part of the covering part, the terminal plate part arranged along the terminal part of the electric wire, and the length direction of the terminal plate part A wire barrel and an insulation barrel that are integrally provided on the terminal plate portion with a space therebetween, and the wire barrel and the insulation barrel are respectively crimped to the core wire and the covering portion of the wire at the end portion of the wire. Is used.

  In an electric wire used at a place where water can easily enter inside the covering portion, such as an electric wire for grounding used in an automobile, for example, as shown in Patent Document 1, the terminal portion of the electric wire to which a crimp terminal is attached A water stop treatment is applied to the wire to prevent water from entering the inside of the wire covering. In this type of water stop treatment method, the terminal plate of the crimp terminal attached to the terminal portion that performs water stop treatment while evacuating the inside of the sheath portion of the wire from the other end portion of the wire that is not subjected to water stop treatment A liquid resin having a water-stopping property such as a silicone resin is dropped on the portion so that the resin penetrates into the inside from the end of the covering portion of the electric wire.

  In order to form a water stop with few defects (bubbles or voids formed between resin and resin) at the end of the wire by the above method, the insulation barrel is crimped when evacuating the wire. It is necessary to maintain the state in which the resin is present at the end portion (resin penetration port of the resin) of the covered wire. When the resin does not exist at the end of the covering portion of the electric wire when the resin is infiltrated into the electric wire, air is drawn into the covering portion, so that the resin cannot be uniformly infiltrated into the electric wire, Water stoppage will be impaired.

  As a method of maintaining the state where the resin is present at the end of the covering portion of the electric wire, there is a method of holding the resin supplied on the terminal plate portion of the crimp terminal in a state of being raised on the terminal plate portion by its surface tension. is there. However, in the conventional method, since the resin liquid is dripped directly onto the terminal plate portion of the crimp terminal, it is difficult to hold an appropriate amount of resin on the terminal plate portion with its surface tension. The pile of resin on the terminal board part collapsed, and the resin sometimes flowed down from the both ends in the width direction of the terminal board part onto the work table. If the resin on the terminal plate part flows down on the workbench, the amount of resin existing near the end of the wire covering part may be insufficient, so that air can be prevented from being drawn into the wire covering part. Can not. Also, if the resin flows down from the terminal plate onto the workbench, when the water stop treatment is performed on the next wire, the core wire or terminal on the terminal portion side where the water stop treatment of the wire is not performed, or the stop Poor conduction due to resin adhering to non-insulating parts (for example, tabs or tongue pieces of male terminals or female terminals) that are terminals on the terminal side that performs water treatment and are used to connect to other conductors. It is necessary to wipe off the resin on the workbench every time the water stop treatment is performed, but a large amount of resin leaks on the workbench. This wiping operation was very troublesome.

Therefore, in the method disclosed in Patent Document 1, in order to prevent the resin dropped on the terminal plate portion of the crimp terminal from flowing down to the side of the terminal plate portion, both ends in the width direction of the terminal plate portion of the crimp terminal. Prepare a jig to form a barrier for preventing resin liquid leakage in close contact with the resin, and with this jig, the resin dripped onto the terminal board part of the crimp terminal will be The inside of the electric wire is evacuated while preventing it from flowing out.
JP 2007-134054 A

  In the case of the method disclosed in Patent Document 1, in order to prevent the resin from leaking from the terminal plate portion of the crimp terminal when performing the water stop treatment, the resin liquid is adhered to both ends in the width direction of the terminal plate portion. This is troublesome because it is necessary to prepare a special jig for forming a barrier portion for preventing leakage. Further, in the case of the method shown in Patent Document 1, the jig is soiled with resin every time the electric wire is water-stopped, and therefore the step of wiping the resin from the jig every time one electric wire is water-stopped is completed. There is a problem that the cost required to perform the water stop treatment increases.

  Further, in the case of the method disclosed in Patent Document 1, since the resin supply direction in the longitudinal direction of the crimp terminal (or the longitudinal direction of the electric wire) cannot be controlled, the resin should be supplied toward the insulation barrel side. There was a problem that the resin spilled on the barrel side and easily leaked.

  The object of the present invention is to prevent resin leakage without using a special jig and to prevent resin leakage to the wire barrel side when performing a water stop treatment on the end portion of the electric wire. An object of the present invention is to provide a crimp terminal and a wire with a crimp terminal in which the crimp terminal is attached to a terminal portion.

  The present invention relates to a terminal plate portion arranged along the terminal portion of the electric wire from which the end portion of the core wire is led out from the end portion of the covering portion, and the terminals spaced apart in the length direction of the terminal plate portion. A wire barrel and an insulation barrel provided integrally with the plate portion, and the wire barrel and the insulation barrel relate to a crimp terminal that is crimped to the core wire and the covering portion of the wire at the end portion of the wire, respectively. .

  In the present invention, the resin that receives the resin supplied from above when the liquid resin is infiltrated into the inside of the covering portion from the end portion of the covering portion of the electric wire to which the insulation barrel is crimped to form the water stopping portion. A resin receiving portion having a receiving recess is formed between the wire barrel and the insulation barrel and is formed integrally with the terminal plate portion.

  Further, the resin receiving recess has a guide surface for guiding the received resin to flow down toward the insulation barrel side, that is, the side where the end of the covering portion of the electric wire is fixed in the crimp terminal longitudinal direction. ing. That is, the guide surface can control the resin supply direction in the longitudinal direction of the crimp terminal (or the longitudinal direction of the electric wire) to the direction toward the insulation barrel.

  As described above, a resin having a guide surface that receives the resin supplied from above when performing the water stop treatment on the terminal portion of the electric wire and guides the received resin to flow down toward the insulation barrel side. If the resin receiving portion provided with the receiving recess is positioned between the wire barrel and the insulation barrel and formed integrally with the terminal plate portion, the supplied resin is once received by the resin receiving recess, It can be held there to some extent, and the resin can flow down toward the insulation barrel by the guide surface. Therefore, the resin can be supplied into the electric wire without causing the resin to leak from the terminal plate portion without using a special jig. Moreover, since the resin flows down toward the insulation barrel side by the guide surface, the resin is preferentially supplied to the insulation barrel side, so that leakage of the resin to the wire barrel side can be suppressed.

In the present invention, the resin receiving recess also receives the received resin in the center in the width direction of the terminal plate portion in a region adjacent to the position where the end portion of the covering portion of the electric wire to which the insulation barrel is crimped is disposed. It is provided so that it may guide toward the part .

  If comprised as mentioned above, resin can flow down on the core wire of an electric wire more reliably, and can be penetrate | infiltrated in a core wire.

In the present invention, the resin receiving portion is a pair of upstanding wall portions that are erected on the same side as the side on which the wire barrel and the insulation barrel are provided from both ends in the width direction of the terminal plate portion, and the terminal plate portion. And an end wall integrally provided at the tip of at least one of the pair of standing wall portions so as to form a gap for allowing the core wire led out from the coating portion of the electric wire to pass therethrough. A recess for receiving a resin is provided on the surface of the part wall opposite to the terminal plate part, and the resin that has flowed down to the terminal board part side by a pair of upright walls is external to both ends of the terminal board part in the width direction. A weir is configured to prevent the water from flowing into the water.

In a preferred aspect of the present invention, the resin receiving portion includes a pair of upstanding wall portions that are erected from both ends in the width direction of the terminal plate portion on the same side as the side on which the wire barrel and the insulation barrel are provided, and the pair of erected walls. A gap for allowing the core wire led out from the covering portion of the electric wire to pass between the terminal plate portion and the end portion of the wall portion is bent at a right angle in a direction approaching each other from the respective tip portions of the wall portion. A pair of end walls, and a resin receiving recess is formed across the surface opposite to the surface facing the terminal plate portion of the pair of end walls. The portion constitutes a weir that prevents the resin supplied from the resin receiving recess to the terminal plate portion side from flowing out from both ends in the width direction of the terminal plate portion.

  As described above, the pair of standing wall portions are provided on the resin receiving portion with the pair of standing wall portions standing on the same side as the side where the wire barrel and the insulation barrel are provided from both ends in the width direction of the terminal plate portion. By forming a weir that prevents the resin supplied to the terminal plate portion side from flowing out from both ends in the width direction of the terminal plate portion to the outside, the resin receiving recesses are placed on the terminal plate portion. When the flow rate of the supplied resin is too high and the resin cannot be held on the terminal plate part due to surface tension, the resin is fed in the width direction of the terminal plate part by the pair of standing walls of the resin receiving part. It is possible to prevent leakage from both ends of the outside. In the present invention, since the standing wall portion that prevents the resin from leaking from above the terminal plate portion is provided integrally with the terminal plate portion, the resin leaks from the terminal plate portion without preparing a special jig. It is possible to reliably prevent and obtain a water quality stop of uniform quality.

  In a preferred aspect of the present invention, when the resin receiving recess is disposed in a state of facing upward when receiving the resin, and the insulation barrel is crimped to the covering portion of the electric wire, And a second opening that is opened to the insulation barrel in a region adjacent to the position where the end of the covering portion is disposed, and the received resin liquid is received from the second opening to the terminal plate portion. It is formed to flow down toward the center in the width direction.

  In another preferable aspect of the crimp terminal according to the present invention, the wire barrel and the insulation barrel are provided on the core wire and the covering portion of the electric wire from the both ends in the width direction of the terminal plate portion on the side where the wire barrel and the insulator barrel are provided. A pair of upright pieces for forming the resin receiving portion, which are bent at right angles to the side close to each other when crimping, are provided between the wire barrel and the insulation barrel so as to be integrated with the terminal plate portion. .

  In this case, the distal ends of the pair of resin receiving portion forming standing pieces are open to the outer surface and the distal end surface of the pair of resin receiving portion forming standing pieces, and also open to the insulation barrel side. A depression is formed and formed at the tip of the pair of resin receiving portion forming standing pieces when the portion near the tip of the pair of standing portions for forming the resin receiving portion is bent at a right angle in a direction approaching each other. Resin receiver for receiving liquid resin supplied from above when forming a water stop portion by infiltrating the resin from the end of the covering portion of the wire with the insulation barrel crimped to the inside of the covering portion by the recess portion The shape of the inner surface of each recess is set so that the recess for use is formed. The resin receiving recess is a central portion in the width direction of the terminal plate portion in a region adjacent to the position where the end portion of the covering portion of the wire to which the insulation barrel is crimped by flowing the received resin toward the insulation barrel side. It is formed in a shape that has a guide surface that guides it to flow down toward the inside, and is supplied from the resin receiving recess to the terminal plate portion by the portion near the terminal plate portion of the pair of upright pieces for forming the resin receiving portion A weir is configured to prevent the resin from flowing out from both ends of the terminal plate portion in the width direction.

  If comprised as mentioned above, in the process of crimping the wire barrel and the insulation barrel to attach the crimp terminal to the electric wire, the resin receiving part can be formed by bending the upright piece for forming the resin receiving part. The resin receiving portion can be easily formed. Also, when attaching the crimp terminal to the electric wire, first the standing piece for forming the resin receiving portion is raised, and after inserting the core wire and the covering portion of the electric wire between the wire barrel and the insulation barrel, the wire barrel In addition, the resin receiving portion forming standing piece can be bent at the same time in the process of crimping the insulation barrel to form the resin receiving portion, so that the resin is applied to the crimp terminal without any loss of ease of mounting the crimp terminal to the end portion of the electric wire. A receiving part can be provided.

  According to the present invention, the terminal end of the wire from which the end of the core wire is led out from the end of the covering portion is spaced from the terminal plate and the length of the terminal plate by the terminal plate. In a state where the crimp terminal provided with the wire barrel and the insulation barrel provided integrally, the terminal plate part is attached to the terminal part of the electric wire, and the wire barrel and the insulation barrel are respectively crimped to the core wire and the covering part of the electric wire. An attached wire with crimp terminals is provided.

  In the electric wire with a crimp terminal according to the present invention, the liquid resin supplied from above is received, and the received resin is directed to the central portion in the width direction of the terminal plate portion in the region adjacent to the end portion of the covering portion of the electric wire. A resin receiving portion having a recess formed in a shape having a guide surface for guiding inside is positioned between the wire barrel and the insulation barrel and is integrally provided on the terminal plate portion of the crimp terminal, and the resin receiving portion The resin supplied to the terminal plate portion side from the resin receiving recess is infiltrated into the inside of the covering portion from the end portion of the covering portion, and a water stop portion is formed at the end portion of the electric wire.

According to the invention described in any one of claims 1 to 4, the resin supplied from above is received when water-stopping treatment is performed on the terminal portion of the electric wire, and the received resin is directed toward the insulation barrel. Since the resin receiving portion having a resin receiving concave portion having a guide surface for guiding it to flow down is formed between the wire barrel and the insulation barrel and integrally formed with the terminal plate portion, A crimp terminal that can prevent resin leakage without using a special jig and suppress leakage of the resin to the wire barrel side when performing a water stop treatment on the terminal portion, and the crimp terminal Can provide an electric wire with a crimp terminal attached to the terminal portion.

Further , according to the present invention , the resin that is erected at both ends in the width direction of the terminal plate portion and flows down from the resin receiving recesses to the terminal plate portion side flows out from both ends in the width direction of the terminal plate portion. Since the standing wall portion constituting the blocking weir is provided integrally with the resin receiving portion, the flow rate of the resin supplied from the resin receiving recess to the terminal plate portion is too high, and the resin is supplied on the terminal plate portion. When a state that cannot be held due to surface tension occurs, the standing wall of the resin receiving part prevents the resin from leaking sideways from the terminal board part, and the terminal board can be prepared without preparing a special jig. It is possible to reliably prevent the resin from leaking from the portion.

According to the invention described in claim 4 , each of the tip portions of the pair of upright pieces for forming the resin receiving portion raised from both ends in the width direction of the terminal plate portion between the wire barrel and the insulation barrel. Since a recess is provided and a recess for receiving a resin is formed by the recess when the pair of upright pieces for forming a resin receiving portion are bent, the wire barrel is attached in order to attach a crimp terminal to the electric wire. It is possible to prevent the resin receiving portion from interfering when inserting the core wire and the covering portion of the electric wire between the insulation barrels. Therefore, according to the present invention, the resin receiving portion can be provided on the crimp terminal without impairing the ease of attaching the crimp terminal to the electric wire.

According to the invention described in claim 5 , when the water stop treatment is performed on the terminal portion of the electric wire, the resin supplied from above is received, and the received resin is positioned at the end of the covering portion of the electric wire. Since the crimp terminal provided with the resin receiving part having the resin receiving concave part formed so as to be guided toward the center part in the width direction of the terminal plate part in the region adjacent to the terminal plate part, The water stop process of the terminal part of an electric wire can be performed easily.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
1 to 8 show an embodiment of a crimp terminal according to this embodiment. FIG. 1 is a front view showing a state before the crimp terminal according to this embodiment is attached to an electric wire, and FIG. FIG. 3 is a perspective view of the crimp terminal shown in FIG. 1, and FIG. 3 is a perspective view showing a state in which a resin receiving portion is formed in the crimp terminal. 4 is a front view showing a state in which the crimp terminal of the present embodiment is attached to an electric wire, FIG. 5 is a front view showing a part of the state in which the crimp terminal of the present embodiment is attached to an electric wire, and FIG. 4 is a plan view of FIG. 4, FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 5, and FIG. 8 is a partial view of a state where a water stop treatment is applied to the end portion of the electric wire to which the crimp terminal according to this embodiment is attached. It is the front view shown in section.

  As shown in FIGS. 1 and 2, the crimp terminal 1 of the present embodiment includes a terminal plate portion 2, a female terminal 3 integrally formed at one end of the terminal plate portion 2, and a terminal plate portion 2. The wire barrel 4 and the insulation barrel 5 integrally formed on the terminal plate portion with a space in the longitudinal direction, and the wire barrel 4 and the insulation barrel 5 are positioned between the wire barrel 4 and the insulation barrel 5 in the width direction. Are provided with a pair of upright pieces 601 and 601 for forming a resin receiving portion that are erected on the same side as the wire barrel 4 and the insulation barrel 5.

  The female terminal 3 shown in the figure has a pair of side wall portions 301, 301 erected at right angles from both ends in the width direction of a portion near one end in the longitudinal direction of the terminal plate portion 2, and in a direction approaching each other from the tips of these side wall portions. It is formed in a substantially rectangular tube shape by bent portions 302 and 302 that are bent at a right angle and the leading ends are abutted.

  The wire barrel 4 is used for forming a pair of wire barrels that are erected on the same side as the side where the female terminal portion 3 is provided from both ends in the width direction of the terminal plate portion at a position near the female terminal 3 of the terminal plate portion 2. It consists of standing pieces 401 and 401. The insulation barrel 5 is connected to the wire barrel 4 from both ends in the width direction of the terminal plate 2 on the other end in the longitudinal direction of the terminal plate 2 (the end opposite to the end on which the female terminal 3 is provided). It consists of a pair of upright pieces 501 and 501 for forming an insulation barrel.

  As shown in FIGS. 1 and 2, the distal end portions of the pair of resin receiving portion forming upright pieces 601 and 601 are provided on the outer surface and the front end surface of the pair of resin receiving portion forming upstanding pieces, respectively. Indented portions 602 and 602 that are open and also open on the insulation barrel 5 side are formed. In the present embodiment, extension portions 601a and 601a extending to positions close to the insulation barrel forming standing pieces 501 and 501 are formed at the bases of the resin receiving portion forming standing pieces 601 and 601.

  As shown in FIGS. 4 to 8, the crimp terminal 1 is attached to the terminal portion of the electric wire 7 from which the core wire 702 having a certain length is led out from the end portion 701 a of the covering portion 701. The crimp terminal 1 has the terminal plate portion 2 attached to the terminal portion of the electric wire 7, and the core wire of the electric wire 7 between the wire barrel forming upright pieces 401 and 401 and between the resin receiving portion forming upright pieces 601 and 602. 702 is received, and it is arranged in a state where the portion covered with the covering portion 701 of the electric wire 7 is received between the upright pieces 501 and 501 for forming the insulation barrel. Then, the upright pieces 401 and 401 are crimped so as to hold the core wire 702, the wire barrel 4 is crimped to the core wire 702, and the upright pieces 501 and 501 hold the portion where the covering portion 701 of the terminal portion of the electric wire is provided. The insulation barrel 5 is crimped to the covering portion 702. In this manner, in a state where the crimp terminal 1 is correctly attached to the terminal portion of the electric wire, the electric wire covering portion 701 and the core wire 702 are placed in a substantially central portion in the width direction of the terminal plate portion 2.

  In the present embodiment, in the state where the crimp terminal 1 is attached to the terminal portion of the electric wire as described above, the core wire 702 of the electric wire is not bent and is arranged linearly on the terminal plate portion 2. A step 2 a corresponding to the thickness of the covering portion 701 is formed between the portion of the terminal plate portion 2 that follows the core wire 702 and the portion that follows the covering portion 701.

  In the crimp terminal 1 according to the present embodiment, when the wire barrel 4 and the insulation barrel 5 are crimped to the core wire 702 and the covering portion 701 of the electric wire, the tips of the standing pieces 601 and 601 for forming a pair of resin receiving portions are simultaneously formed. The resin receiving portion 6 is formed by bending the portions closer to each other at a right angle in the direction in which they approach each other. In order to show the structure of the resin receiving portion 6 in an easy-to-understand manner, the electric wires are omitted and the wire barrel 4 and the insulation barrel 5 are left as they are before crimping, and only the resin receiving portion forming standing pieces 601 and 601 are bent. The state in which the resin receiving portion 6 is formed is schematically shown in FIG.

  As apparent from FIG. 3, in the resin receiving portion 6, the ends of the pair of standing portions 601 and 601 for forming the resin receiving portion are opposed to each other through the narrow gap g1, and the terminal plate portion A pair of end walls 6b and 6b that form a gap g2 for allowing the core wire 702 led out from the covering portion 701 of the electric wire 7 to pass therethrough are formed.

  Further, when the end wall portions 6b and 6b are formed by bending the portions near the tip portions of the resin receiving portion forming standing pieces 601 and 601, the terminal plate portions of the end walls 6b and 6b are formed by the recesses 602 and 602. A recess 6c for receiving a resin is formed across the surface opposite to 2.

  In the resin receiving portion 6, the portion near the base end including the extended portions 601 a and 601 a of the pair of upright pieces 601 and 601 for forming the resin receiving portion (the portion standing from both ends in the width direction of the terminal plate portion). Thus, a pair of upright wall portions 6a and 6a are formed standing from both ends in the width direction of the terminal plate portion 2 on the same side as the side on which the wire barrel 4 and the insulation barrel 5 are provided. When the water blocking portion is formed at the end portion of the electric wire 7 by the standing wall portions 6a and 6a, the region is adjacent to the position where the end portion 701a of the covering portion of the electric wire is disposed on the terminal plate portion 2. A weir is configured to prevent the supplied resin from flowing out from both ends of the terminal plate portion 2 in the width direction. In order to prevent the resin supplied on the terminal plate portion 2 from flowing out from both ends in the width direction of the terminal plate portion 2 when the water stop treatment is applied to the terminal portion of the electric wire, the standing wall The lengths (dimensions measured in the longitudinal direction of the terminal plate portion) and height dimensions of the portions 6a, 6a are set in advance.

  The resin receiving recess 6c is a resin supplied from above as shown in FIG. 8 when a liquid resin is infiltrated from the end 701a of the covering portion of the electric wire into the inside of the covering portion to form a water stop portion. 9 is formed so as to have a guide surface on the inside for guiding the received resin toward the center portion in the width direction of the terminal plate portion 2 so as to flow toward the insulation barrel 5 side.

  As shown in FIG. 5 and FIG. 8, the resin receiving recess 6 c of the present embodiment is a first opening 6 c 1 that is disposed in an upward direction when the water stop portion forming resin 9 is supplied. And when the insulation barrel 5 is pressure-bonded to the covering portion 701 of the electric wire, the second opening is opened to the insulation barrel side in a region adjacent to the position where the end portion 701a of the covering portion is disposed. And an inclined guide surface 6c3 that guides the received resin liquid so as to flow down from the second opening 6c2 toward the center in the width direction of the terminal plate portion 2. ing.

  That is, in this embodiment, when the resin receiving portion 6 is formed by bending the portions near the tip of the resin receiving portion forming upright pieces 601 and 601 at right angles to the directions approaching each other, the resin receiving portion 6 straddles the end walls 6b and 6b. The inner surface shape of each recess 602 is set so that the resin receiving recess 6c having the above-described shape is formed.

  When forming a water stop part in the terminal part of the electric wire 7 to which the crimp terminal 1 of this embodiment is attached, as shown in FIG. 8, the terminal part of the electric wire with the resin receiving recess 6c facing upward. Is placed on a work table (not shown), and the other end portion of the wire 7 opposite to the end portion to which the crimp terminal 1 is attached is connected to the suction port 10 sucked by the vacuum pump, and the inside of the wire 7 is A vacuum is drawn, and a liquid sealing resin (eg, silicone resin) is dropped onto the resin receiving recess 6c.

  The dropped resin 9 is received by the resin receiving recess 6c. The resin 9 received by the resin receiving recess 6c is relatively slowly moved toward the insulation barrel side toward the center in the width direction of the terminal plate portion 2 along the inner surface (guide surface) of the resin receiving recess 6c. In the region adjacent to the position where the end portion 701a of the covering portion 701 of the electric wire is disposed, it flows down toward the center portion in the width direction of the terminal plate portion 2 (resin flow rate adjustment is performed by setting the inclination of the guide surface, etc. Optionally possible). Since the core wire 702 led out from the end of the covering portion 701 is disposed at the center in the width direction of the terminal plate portion 2, the resin guided by the resin receiving recess 6 c is actually above the core wire 702. And flows into the core wire 702. Further, the resin that has not directly penetrated into the core wire is held in a raised state on the terminal board portion 2 due to surface tension. At this time, the position of the second opening 6c2 of the resin receiving recess 6c is set so that the resin on the terminal plate portion reaches a position where the resin contacts the end 701a of the covering portion 701 of the electric wire 7. The resin supplied on the terminal plate portion is sucked into the covering portion 701 from the end portion of the covering portion 701 of the electric wire and penetrates into the core wire in the covering portion 701. Therefore, the resin is stopped inside the covering portion of the terminal portion of the electric wire. A water part is formed.

  When the resin is supplied onto the terminal plate portion, the resin supply speed is adjusted so that the state where the resin is held on the terminal plate portion 2 by the surface tension is maintained. In the present embodiment, the resin is not directly dropped onto the terminal plate portion, but is once received by the resin receiving recess 6c, and the received resin is allowed to flow slowly along the inner surface of the recess to make the width of the terminal plate portion. Since the resin flows down toward the center in the direction, the supply rate of the resin onto the terminal plate can be easily adjusted.

  In order to maintain the state where the sealing resin covers the core wire 702 due to surface tension, it is preferable to smoothly transfer the resin from the resin receiving recess 6c onto the core wire 702 of the electric wire. As shown in FIG. 8, it is preferable that the second opening 6 c 2 of the resin receiving recess is in contact with the core wire 702.

  In the present embodiment, the gap g1 is formed at the center of the resin receiving recess 6c. However, if the gap g1 is sufficiently narrow and the resin dropped into the recess 6c has a certain degree of viscosity, the resin This surface tension can prevent the resin from leaking downward from the gap g1.

  The evacuation of the electric wire may be started after the liquid sealing resin dripped onto the resin receiving recess 6c sufficiently penetrates into the core wire of the electric wire 7. When vacuuming in the electric wire is started after the sealing resin has sufficiently penetrated into the core wire of the electric wire 7, the possibility of air being sucked into the electric wire can be eliminated, so that a water stop portion with few defects can be obtained. .

  As described above, in the present embodiment, the resin 9 supplied from above is received when performing the water stop treatment on the terminal portion of the electric wire, and the received resin is placed at a position where the end portion of the covering portion of the electric wire is arranged. A resin receiving portion 6 having a resin receiving concave portion 6c having a guide surface for guiding the terminal plate portion 2 to flow down toward the central portion in the width direction of the terminal plate portion 2 is connected to the wire barrel 4 and the insulation barrel 5. Since the resin is supplied to the resin receiving recess 6c and slowly flows down on the terminal plate 2 while controlling the flow rate of the resin. Thus, it is possible to maintain a state where an appropriate amount of resin is held on the terminal plate portion by surface tension. Therefore, even if a special jig is not used, the resin penetrates into the electric wire while maintaining an appropriate amount of resin in the vicinity of the end of the electric wire without leaking the resin from the terminal plate. Accordingly, a water stop portion having a uniform quality can be obtained. In addition, the crimp terminal 1 of the present embodiment can be manufactured with the same number of steps as that of existing crimp terminals, and it is not necessary to use a special jig to prevent resin leakage. Can also be cheaper. Furthermore, since the resin flows down toward the insulation barrel 5 side by the guide surface, it is preferentially supplied to the insulation barrel 5 side, and is sucked into the covering portion 701 as it is by evacuation in the electric wire. The resin leakage to the wire barrel 4 side can be suppressed. Thereby, the supply efficiency of the resin into the electric wire is increased, and the problem that the resin functions as a terminal such as poor conduction due to the resin adhering to the female terminal 3 on the wire barrel 4 side is prevented.

  Also, the resin receiving recess 6c allows the received resin to be placed in the center in the width direction of the terminal plate portion 2 in a region adjacent to the position where the end of the covering portion of the electric wire to which the insulation barrel 5 is crimped is disposed. Since it is provided so that it may guide toward, resin can flow down on the core wire of an electric wire reliably, and can be penetrate | infiltrated in a core wire.

  Further, in this embodiment, the resin that is erected at both ends in the width direction of the terminal plate portion 2 and flows down from the resin receiving recesses to the terminal plate portion side flows out from both ends in the width direction of the terminal plate portion to the outside. Since the standing wall portion 6a constituting the blocking weir is provided integrally with the resin receiving portion 6, the flow rate of the resin supplied from the resin receiving recessed portion 6c onto the terminal plate portion 2 is too fast, Even if the resin cannot be held on the terminal plate due to surface tension, the resin can be prevented from leaking sideways from the terminal plate, and the terminal plate can be prepared without preparing a special jig. It is possible to prevent the resin from leaking from the part and obtain a water stop part of uniform quality.

  Further, according to the present embodiment, the resin can be prevented from leaking from the terminal plate portion, and even if it leaks, the amount of the leaking resin can be extremely small, so that the water stop treatment of the electric wire It is possible to omit cleaning of the work table when performing the cleaning, or at least reduce the cleaning work.

  When the crimp terminal according to the present embodiment is attached to the electric wire, as shown in FIGS. 1 and 2, the pair of upright pieces 601 and 601 for forming the resin receiving portion erected on the terminal plate portion are kept upright. In the process of crimping the wire barrel 4 and the insulation barrel 5 to attach the crimp terminal to the terminal portion of the electric wire, the resin receiving portion forming standing pieces 601 and 601 are simultaneously bent and the resin receiving portion 6 is provided. However, as shown in FIG. 3, the resin receiving portion forming standing pieces 601 and 601 are bent in advance to form the resin receiving portion 6, and the core wire 702 of the terminal portion of the electric wire 7 is formed. It may be inserted between the wire barrels 4 through the inside of the resin receiving portion 6 and attached with crimp terminals.

  In this embodiment, the terminal plate part is formed in a flat plate shape, and the cross-sectional contour shape of the portion provided with the wire barrel and the insulation barrel is substantially square or square with each barrel being crimped. However, the crimp terminal to which the present invention is applied is not limited to such a shape, for example, the cross section of the terminal plate portion The crimp terminal is also configured so that the shape of the cross section of the cross section of the part provided with both barrels is almost circular or elliptical when the shape is an arc and the wire barrel and the insulation barrel are crimped. Of course, the present invention can be applied.

  In the above-described embodiment, the end walls 6b and 6b are integrally formed with the pair of standing wall portions 6a and 6a that are erected from both ends in the width direction of the terminal plate portion 2 between the wire barrel 4 and the insulation barrel 5, respectively. However, the end wall 6b only needs to be integrated with at least one of the upright walls 6a and 6a, and the end wall 6a of the pair of upright walls 6a and 6a It is also possible to form an end wall 6b having a length over substantially the entire width of the terminal plate portion 2 and to form a resin receiving recess 6c on this end wall.

  In the present embodiment, the sealing resin supplied from above is received, and flows down toward the center in the width direction of the terminal plate portion 2 in a region adjacent to the position where the end of the covering portion of the electric wire is disposed. The resin receiving recess 6c having a guide surface that guides it is basically provided between the wire barrel 4 and the insulation barrel 5, and by providing such a resin receiving recess, the terminal plate 2 The resin supplied to the terminal plate is prevented from leaking outside from both ends in the width direction of the terminal plate portion. In order to enhance the effect of preventing the resin from leaking from the terminal plate portion, as shown in the above embodiment, the resin plate is prevented from leaking from the terminal plate portion by standing from both ends of the terminal plate portion 2 in the width direction. Although it is preferable to provide a pair of upright wall portions 6a and 6a that constitute the weir, it is not essential to provide these upright wall portions in the present embodiment.

  For example, the upright wall portion 6a may be provided only on one side in the width direction of the terminal plate portion 2, and the end wall 6b in which the resin receiving recess 6c is formed at the tip of the upright wall portion may be integrally provided. .

  In the above embodiment, the female terminal 3 is provided at the distal end of the terminal plate portion 2, but the terminal portion provided on the distal end side of the terminal plate portion 2 is not limited to the female terminal, and may be a male terminal, a lug terminal, or the like. .

It is the front view which showed the state before attaching to the electric wire of the crimp terminal concerning this embodiment. It is a perspective view of the crimp terminal shown in FIG. It is the perspective view which showed typically the state which formed the resin receiving part in the crimp terminal. It is the front view which showed the state which attached the crimp terminal of this embodiment to the electric wire. It is the front view which showed the state where the crimp terminal of this embodiment was attached to the electric wire, and was shown in a section. FIG. 5 is a plan view of FIG. 4. It is the VII-VII sectional view taken on the line of FIG. It is the front view which showed the state where the water stop process was given to the terminal part of the electric wire to which the crimp terminal concerning this embodiment was attached, and was shown partially.

DESCRIPTION OF SYMBOLS 1 Crimp terminal 2 Terminal board part 3 Female terminal 4 Wire barrel 5 Insulation barrel 6 Resin receiving part 601 Resin receiving part formation standing piece 602 Indented part 6a Standing wall part 6b End wall 6c Resin receiving recessed part 7 Electric wire 701 Covering part 702 Core wire 9 Resin

Claims (5)

A terminal plate portion disposed along the end portion of the electric wire from which the end portion of the core wire is led out from the end portion of the covering portion, and the terminal plate portion integrated with the terminal plate portion with an interval in the length direction thereof A wire barrel and an insulation barrel provided on the wire barrel, wherein the wire barrel and the insulation barrel are crimp terminals that are crimped to the core wire and the covering portion of the wire at the end portion of the wire, respectively.
A resin receiving recess for receiving the resin supplied from above when forming a water stopping portion by infiltrating a liquid resin from the end of the covering portion of the wire to which the insulation barrel is crimped into the inside of the covering portion. The resin receiving portion provided is formed between the wire barrel and the insulation barrel and is integrally formed with the terminal plate portion,
The concave portion for receiving the resin directs the received resin toward a central portion in the width direction of the terminal plate portion in a region adjacent to a position where an end portion of the covering portion of the electric wire to which the insulation barrel is crimped is disposed. , Having a guide surface for guiding to flow down toward the insulation barrel side,
The resin receiving portion is between the terminal plate portion and a pair of upstanding wall portions that are erected on the same side as the side on which the wire barrel and the insulation barrel are provided from both ends in the width direction of the terminal plate portion. An end wall integrally provided at the tip of at least one of the pair of standing wall portions so as to form a gap for allowing the core wire led out from the coating portion of the electric wire to pass therethrough, and the end portion The resin receiving recess is provided on a surface of the wall opposite to the surface facing the terminal plate portion, and the resin that has flowed down to the terminal plate portion side by the pair of standing walls extends in the width direction of the terminal plate portion. Crimp terminal with a weir that prevents it from flowing out from both ends . The resin receiving portion includes a pair of standing wall portions that are erected from both ends in the width direction of the terminal plate portion on the same side as the side on which the wire barrel and the insulation barrel are provided, and each of the pair of standing wall portions. Bending at right angles to the directions approaching each other from the tips, the tips are opposed to each other through a narrow gap, and a gap is formed between the terminal plate portion and the core wire led out from the coating portion of the wire. The resin receiving recess is formed across a surface opposite to the surface facing the terminal plate portion of the pair of end walls, integrally including a pair of end walls.
The pair of upright walls constitute a weir that prevents the resin supplied from the resin receiving recess to the terminal plate portion side from flowing out from both ends in the width direction of the terminal plate portion. ,
The crimp terminal according to claim 1. The resin receiving recess includes a first opening disposed in an upward direction when receiving the resin, and an end of the covering portion when the insulation barrel is pressure-bonded to the covering portion of the electric wire. And a second opening that is open to the insulation barrel in a region adjacent to the position where the resin plate is disposed, and the received resin liquid from the second opening to the width of the terminal plate portion Being formed to flow down toward the center of the direction,
The crimp terminal according to claim 1 or 2. A terminal plate portion arranged along the end portion of the electric wire from which the end portion of the core wire is led out from the end portion of the covering portion, and the terminal plate portion spaced apart in the length direction of the terminal plate portion A wire barrel and an insulation barrel provided integrally, wherein the wire barrel and the insulation barrel are crimp terminals that are crimped to the core wire and the covering portion of the wire at the end portion of the wire, respectively.
A portion closer to the tip when the wire barrel and the insulation barrel are pressure-bonded to the core wire and the covering portion of the electric wire standing from the both ends in the width direction of the terminal plate portion on the side where the wire barrel and the insulator barrel are provided A pair of upright pieces for forming the resin receiving portion that are bent at right angles to the sides approaching each other, are provided between the wire barrel and the insulation barrel and are provided integrally with the terminal plate portion,
Recessed portions that open to the outer surface and the distal end surface of the pair of resin receiving portion forming standing pieces and that also open to the insulation barrel side are provided at the respective leading end portions of the pair of resin receiving portion forming standing pieces. Formed,
When the portions near the tips of the pair of uprights for forming the resin receiving portion are bent at right angles in the direction approaching each other, the recesses formed at the tip portions of the upright pieces for forming the pair of resin receiving portions respectively. The resin receiving recess for receiving the liquid resin supplied from above when the resin is infiltrated from the end of the covering portion of the electric wire to which the insulation barrel is crimped into the inside of the covering portion to form the water stopping portion. The inner surface shape of each recess is set so that
The resin receiving recess is a width of the terminal plate portion in a region adjacent to a position where an end portion of the covering portion of the electric wire to which the received resin is flowed to the insulation barrel side and the insulation barrel is crimped is disposed. It is formed in a shape having a guide surface on the inside for guiding it to flow down toward the center of the direction,
Due to the portions of the pair of upright pieces for forming the resin receiving portion that are close to the terminal plate portion, the resin supplied from the concave portion for receiving the resin onto the terminal plate portion flows out from both ends in the width direction of the terminal plate portion to the outside. That weirs are constructed to prevent
  Crimp terminal characterized by. The crimp terminal according to any one of claims 1 to 4 is attached to a terminal portion of an electric wire from which an end portion of a core wire is led out from an end portion of a covering portion,
The resin supplied from the resin receiving recess of the resin receiving portion of the crimp terminal to the terminal plate portion side is permeated into the inside of the covering portion from the end portion of the covering portion, so that the water stopping portion is provided at the terminal portion of the electric wire. That is formed,
An electric wire with a crimping terminal.

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