JP5579344B1 - Crimping method for connection structure, crimping device for connection structure, connection structure, terminal crimping member, connector, and wire harness - Google Patents

Abstract

The present invention relates to a connection structure crimping method, a connection structure crimping apparatus, a connection structure, and a terminal capable of improving the water-stopping property between a crimping portion and an insulating coating and ensuring stable conductivity. An object is to provide a crimping member, a connector, and a wire harness.
When crimping a crimp portion 30 of a female crimp terminal 10 in a crimp connection structure 1 to a wire tip portion 200a of a covered electric wire 200, barrel portions 30b1 and 30b2 of an insulation barrel 30b in the crimp portion 30 are insulated. The anvil portions 61c and 61d of the installation anvil 61b and the crimper portions 62c and 62d of the insulation crimper 62b are crimped by crimping into different crimp shapes. The meat escape portion 30c1 formed in the front barrel portion 30b1 and the meat escape portion 30c2 formed in the rear barrel portion 30b2 are divided in the circumferential direction W, and along the outer circumferential surface of the insulation barrel 30b in the longitudinal direction X. Prevents continuous formation.

Description

  The present invention provides a connection structure crimping method, a connection structure crimping device, a connection structure, a terminal crimping member, a closed barrel crimping terminal and a covered electric wire having a conductor covered with an insulating coating, The present invention relates to a connector and a wire harness.

  In recent years, automobiles are equipped with various electrical devices, and the electric circuit of each device tends to be complicated, so that stable power supply is indispensable. Such electric circuits of various electrical equipment are configured by wiring a wire harness formed by bundling a plurality of covered electric wires to an automobile and connecting the wire harnesses with a connector. A connection structure in which a crimp terminal and a covered electric wire are crimped and connected is mounted inside the connector.

This connection structure connects the crimping terminal and the covered wire so that they can be connected by crimping the crimping part after inserting the coated wire into the crimping terminal that has a crimping part that electrically connects the conductor of the covered wire. Configured.
As a crimping terminal to which such a covered electric wire is crimped, for example, a crimping portion having an annular cross section into which the conductor of the covered electric wire is inserted is deformed in the reduced diameter direction, and crimped to the conductor exposed at the end of the covered electric wire. A closed barrel type crimp terminal that crimps and connects the parts has been proposed (see Patent Document 1).

  However, since the closed barrel type crimped part is easily deformed into an unintended crimped shape when crimping to the crimped part of the above-mentioned crimped terminal to the insulation tip of the insulated wire, the gap between the crimped part and the insulation coating There was a possibility that a gap for moisture to enter was generated and stable water stoppage could not be ensured.

JP-A-9-82449

  The present invention provides a method for crimping a connection structure, a crimping device for a connection structure, a connection structure, a terminal crimping member, which can improve the water-stopping property between the crimping portion and the insulating coating, and ensure stable conductivity. An object is to provide a connector and a wire harness.

  The present invention relates to a covered electric wire having a wire tip portion in which a conductor is covered with an insulating coating, and the insulating coating on the tip side is peeled off to expose the conductor, and a coating for crimping by crimping the vicinity of the tip of the insulating coating. A crimping terminal and a crimping terminal provided integrally with a crimping portion that is crimped by crimping the tip end portion of the electric wire, and a connection structure for connecting the tip end portion of the electric wire by crimping the crimping portion. A crimping method and a crimping device for a connection structure, wherein a crimped shape formed by crimping a predetermined range in the longitudinal direction of the coated crimped portion is a first crimped shape, and a crimped shape formed by crimping the other range Is crimped by crimping the coated crimped portion into which the coated electric wire is inserted along the longitudinal direction of the coated electric wire from the radial direction of the coated electric wire using a pair of crimping means. Corresponding to the first crimping shape The first pressure-bonding shape and the second pressure-bonding portion are formed by a pressing surface that presses the covering pressure-bonding portion in the set of pressure-bonding means configured by the first pressure portion and the second pressure portion corresponding to the second pressure-bonding shape. It is characterized in that the crimping is performed differently from the crimping shape.

  The set of crimping means has an inner surface (pressing surface) shape that can be crimped by crimping the crimping portion, and can be a two-part, three-part or four-part crimping die. For example, a pair of crimping dies having the same inner surface shape, a pair of male and female dies composed of a male die and a female die, or a crimping die for clamping by crimping a crimping portion from three or four directions can do.

According to the present invention, the water stoppage between the crimping portion and the insulating coating can be improved over a long period of time, and stable conductivity can be ensured.
Specifically, when the coated crimping part of the crimped part having an annular cross section is deformed in the diameter reducing direction and the coated tip part of the insulating coating is crimped, the circumference does not change even if the coated crimped part having the annular cross section is reduced in diameter. Therefore, the cover crimping part is unintentionally deformed, for example, is deformed so as to protrude radially outward or radially inward (hereinafter referred to as a flesh escape part), and a gap is generated between the cover crimping part and the insulating coating. There is.
For this reason, moisture may enter through the gap between the coated crimping portion and the insulating coating, and stable conductivity may not be ensured.

  On the other hand, the crimping method of the connection structure and the crimping device of the connection structure form the first crimping shape and the second crimping shape, which are different in the crimping shape depending on the pressing surface of the pair of crimping means, on the coated crimping portion. Therefore, even if a flare occurs in the longitudinal direction, the gap between the coated crimping part and the insulation coating can be made discontinuous, preventing moisture from entering the crimped part from the coated wire it can.

Thereby, the crimping method of the connection structure and the crimping device of the connection structure form the first crimping shape and the second crimping shape having different crimping shapes on the coated crimping portion, so that the tip of the wire crimped by the conductor crimping portion It is possible to prevent moisture from entering the part. For this reason, the stable electroconductivity is securable.
Therefore, the method for crimping the connection structure and the crimping apparatus for the connection structure can improve the water-stopping property between the crimping portion and the insulating coating and ensure stable conductivity.

As an aspect of the present invention, at least one formed along the circumferential direction of the pressing surface while projecting inward in the radial direction between the first pressing portions spaced apart by a predetermined interval along the longitudinal direction. The covered crimping portion can be crimped by the pressing surface on which the second pressing portion having two protrusions is arranged to crimp the covered electric wire.
The protrusion can be, for example, a recess forming part that protrudes radially inward, or a protrusion having a substantially trapezoidal cross section.

According to the present invention, it is possible to make the meat escape portion discontinuous in the longitudinal direction and crimp the insulating coating to the coated crimp portion.
Specifically, since the crimping method for the connection structure and the crimping apparatus for the connection structure are crimped on the cover crimping portion with the pressing surface having the protrusion, the second crimping shape is crimped at a higher compression ratio than the first crimping shape. It can be set as the strong pressure bonding part.

  The compression rate means, for example, the ratio of the amount after compression, which is the difference between the shape after crimping reduced by crimping and the shape before crimping, to the shape before crimping in the cross section. By compressing, it means compressing with a large compression amount with respect to the shape before press bonding.

  For this reason, the crimping method for the connection structure and the crimping device for the connection structure can form the meat relief portion in the first crimping shape and the meat relief portion in the second crimping shape at different positions in the radial direction. . In other words, the meat escape portion of the cover crimping portion is formed in a state of being divided in the radial direction between a predetermined range and another range.

Thereby, the crimping | compression-bonding method of a connection structure, and the crimping | compression-bonding apparatus of a connection structure can prevent that a meat escape part is formed continuously in a longitudinal direction. For this reason, the water | moisture content which penetrate | invades via a meat escape part can prevent reaching an electric wire front-end | tip part.
Therefore, the crimping method of the connection structure and the crimping apparatus of the connection structure can improve the water-stopping property in the coated crimping part by dividing the meat relief part in the radial direction and ensure stable conductivity. it can.

  Further, as an aspect of the present invention, a plurality of the protrusions formed in the longitudinal direction with a predetermined interval are formed in a substantially concave shape between the plurality of protrusions, and the height of the protrusions in the radial direction is determined. The covered electric wire can be crimped by crimping the coated crimping portion with the pressing surface having a groove formed at a lower depth in the radial direction.

According to the present invention, it is possible to more stably crimp the coated electric wire and to prevent the coated crimping portion in the crimped state from being cracked.
Specifically, for example, when crimping an inserted covered electric wire with a pressing surface having one protrusion, the coated crimping part is supported at one point in the longitudinal direction, so that the crimp terminal is crimped while falling in the radial direction. And there is a possibility that the crimped state is not stable.
Furthermore, since the covering crimping portion is locally strongly compressed by one protrusion, there is a possibility that the covering crimping portion in the crimped state is cracked.

  On the other hand, since the connection structure crimping method and the connection structure crimping apparatus have a plurality of protrusions in the longitudinal direction, even if they have protrusions, they are covered and crimped at multiple locations in the longitudinal direction. Can support the part. For this reason, it can be crimped while supporting the coated crimping portion in a stable state.

  Furthermore, since the covering crimping portion can be deformed so as to be fitted into the groove portion with the crimping by the groove portion constituted by the plurality of protrusions, it is possible to prevent the covering crimping portion from being cracked in the crimping state.

  At this time, since the groove is formed with a depth in the radial direction lower than the height in the radial direction of the protrusion, the coated crimped part is excessively fitted into the groove with the crimping, and the thickness of the coated crimped part is partially Can be prevented from becoming thinner.

Furthermore, since the coated crimping portion deformed along with the crimping is pushed into the groove portion, the coated crimped portion can be crimped while being supported in a more stable state.
Therefore, the crimping method of the connection structure and the crimping device of the connection structure can more stably crimp the coated electric wire, and can prevent the coated crimping portion in the crimped state from being cracked.

Further, as an aspect of the present invention, a boundary position in the first pressing portion of the set of crimping means and a boundary position in the second pressing portion of the set of crimping means are in the circumferential direction of the pressing surface. The covered electric wire can be crimped by crimping the coated crimping portion with the different pressing surfaces.
The boundary position can be the position of the mating surface of the crimping mold or the position of the end of the male mold fitted to the female mold in the male and female molds.

The above-described meat escape portion is often generated at a boundary position such as a mating surface of the crimping die. However, according to the present invention, the meat escape portion is made discontinuous in the longitudinal direction, and the insulation coating is crimped to the covering crimp portion. be able to.
Specifically, when the boundary position in the first pressing portion of the set of crimping means and the boundary position in the second pressing portion of the set of crimping means are the same pressing surface in the circumferential direction, the boundary of the pair of crimping means As a result, a continuous relief portion in the longitudinal direction may be formed in the coated crimp portion.
For this reason, there exists a possibility that a water | moisture content penetrate | invades into the electric wire front-end | tip part through a meat escape part, and cannot ensure the stable electroconductivity.

On the other hand, the crimping method of the connection structure and the crimping device of the connection structure include the boundary position in the first pressing portion of the pair of crimping means and the boundary position in the second pressing portion of the pair of crimping means. However, since the covering crimping part is crimped by different pressing surfaces in the circumferential direction, the meat relief part in the first crimping shape and the meat relief part in the second crimping shape can be formed at different positions in the circumferential direction.
That is, the flesh escape portion of the cover crimping portion is formed in a state of being divided in the circumferential direction between a predetermined range and another range.

Thereby, it is possible to prevent the meat escape portion from being continuously formed in the longitudinal direction. For this reason, the water | moisture content which penetrate | invades via a meat escape part can prevent reaching an electric wire front-end | tip part.
Therefore, the crimping method of the connection structure and the crimping device of the connection structure can further improve the water-stopping property in the coated crimping part by securing the more stable conductivity by dividing the meat relief part in the circumferential direction. be able to.

  Further, as an aspect of the present invention, the pressing surface having the inclined portion formed by gradually expanding the inner diameter from the wire tip end side to the insulating coating side in the longitudinal direction, The coated electric wire can be crimped by crimping the coated crimping portion while pressing the vicinity of the distal end on the wire distal end side with the inclined portion.

By this invention, it can prevent that the level difference part which arises in a conductor crimping | compression-bonding part and a covering crimping | compression-bonding part with crimping | bonding produces, and can improve the water stop in a crimping | compression-bonding part.
Specifically, since the outer diameter of the tip portion of the electric wire is different from the outer diameter of the insulating coating, a step is generated at the boundary portion between the conductor crimping portion and the coating crimping portion along with the crimping.
For this reason, for example, when the boundary portion between the conductor crimping portion and the coated crimping portion is deformed toward the center in the radial direction, the stress at the boundary portion increases, and therefore there is a possibility that the boundary portion may be cracked.

On the other hand, the boundary portion between the coated crimping portion and the conductor crimping portion can be deformed into an inclined shape by the pressing surface having the inclined portion.
For this reason, the crimping method of a connection structure and the crimping apparatus of a connection structure can reduce the stress in the boundary part of a conductor crimping part and a coating crimping part, and can prevent that the crack etc. accompanying crimping arise.

Furthermore, since the boundary portion deformed into an inclined shape is in close contact with the tip of the insulation coating, the connection structure crimping method and the connection structure crimping device ensure that moisture enters the wire tip from the tip of the insulation coating. Can be prevented.
Thereby, the crimping method of the connection structure and the crimping device of the connection structure can more reliably prevent moisture from entering the conductor crimping part from the coated crimping part side, and further increase the water-stopping property. And stable conductivity can be ensured.

In addition, friction due to the crimping generated between the boundary part between the conductor crimping part and the coating crimping part and the pressing surface of the crimping means by forming the inclined shape of the crimping part at the boundary part between the coating crimping part and the conductor crimping part. Since resistance can be reduced, it can suppress that the press surface of a crimping | compression-bonding means wears.
Therefore, the crimping method of the connection structure and the crimping device of the connection structure can improve the water-stopping property between the crimping part and the insulating coating by providing the inclined part on the pressing surface, and can secure stable conductivity. .

  Further, according to the present invention, the conductor is covered with an insulating coating, and the insulated coating on the tip side is peeled off to expose the conductor, and then the crimped portion is crimped by crimping the vicinity of the tip of the insulating coating. A connecting structure for connecting a crimping terminal integrally formed with a covering crimping part and a conductor crimping part that crimps and crimps the wire tip part by crimping the wire tip part with the crimping part. The crimping method and the connection structure crimping apparatus according to claim 1, wherein the crimping shape formed by caulking a predetermined range in the longitudinal direction of the covering crimping portion is a first crimping shape and the other range is caulked. The crimping shape different from the first crimping shape is a second crimping shape, and the crimping portion into which the wire tip is inserted along the longitudinal direction of the coated wire is crimped in the radial direction of the coated wire and crimped. A set of crimping means And three or more are arranged at a predetermined interval in the longitudinal direction, and are arranged between the first pressing part corresponding to the first pressing shape and the first pressing parts, and correspond to the second pressing shape. A second pressing portion, and the second pressing portion protrudes inward in the radial direction from the first pressing portion, and includes a protrusion formed along the circumferential direction of the pressing surface; Of the plurality of second pressing portions, the covering pressing portion is formed by a pressing surface in which the protruding height of the second pressing portion on the wire pressing portion side is set higher than the protruding height of the second pressing portion on the opposite side in the longitudinal direction. , And the first pressure-bonding shape and the second pressure-bonding shape are different from each other.

The protrusion height of the above-mentioned second pressing portion means the amount of protrusion that protrudes inward in the radial direction from the first pressing portion.
Among the plurality of second pressing portions described above, the protruding height of the second pressing portion on the wire crimping portion side is set to be higher than the protruding height of the second pressing portion on the opposite side in the longitudinal direction. The protrusion height of the 2nd press part by the side of a crimping | compression-bonding part should just be formed higher than the protrusion height of another 2nd press part.

  For example, when three or more second pressing portions are arranged, only the second pressing portion on the electric wire crimping portion side or the plurality of second pressing portions on the electric wire crimping portion side are protruding heights of other second pressing portions. It is a concept including various forms such as forming higher than the height, or the protrusion height of the second pressing portion on the side of the wire crimping portion being the highest and gradually decreasing toward the opposite side in the longitudinal direction.

According to the present invention, the coated electric wire can be more stably crimped, and the water stoppage between the crimping portion and the insulating coating can be improved over a long period of time, and stable conductivity can be ensured.
Specifically, the connection structure crimping method and the connection structure crimping apparatus can form the first crimping shape and the second crimping shape, which are different in the crimping shape depending on the pressing surface of the pair of crimping means, on the coated crimping portion.
For this reason, even if a meat escape portion occurs in the longitudinal direction, the gap between the coated crimping portion and the insulation coating can be made discontinuous, preventing moisture from entering the crimped portion from the coated wire. it can.

  In addition, a crimping shape formed by caulking a predetermined range in the longitudinal direction of the coated crimping portion is a first crimping shape, and a crimping shape different from the first crimping shape is formed by caulking other ranges. In a set of crimping means for crimping by crimping the crimped portion into which the wire tip is inserted along the longitudinal direction of the covered electric wire in the radial direction of the covered electric wire, Three or more are arranged at an interval, and are configured by a first pressing portion corresponding to the first pressure-bonding shape and a second pressing portion corresponding to the second pressure-bonding shape that is disposed between the first pressing portions. The second pressing portion is configured by a protrusion that protrudes inward in the radial direction from the first pressing portion and is formed along the circumferential direction of the pressing surface.

  Thereby, the flesh escape portion in the first press-fit shape formed by the first press portion and the flesh escape portion in the second press-fit shape portion formed by the second press portion are discontinuous in the longitudinal direction. The insulating coating can be crimped to the coating crimping portion.

  Specifically, since the crimping method for the connection structure and the crimping apparatus for the connection structure are crimped on the cover crimping portion with the pressing surface having the protrusion, the second crimping shape is crimped at a higher compression ratio than the first crimping shape. Thus, the meat escape portion in the first press-fit shape and the meat escape portion in the second press-fit shape can be formed at different positions in the radial direction. In other words, the meat escape portion of the cover crimping portion is formed in a state of being divided in the radial direction between a predetermined range and another range.

  Further, for example, when the inserted covered electric wire is crimped with a pressing surface having one protruding second pressing portion, the covering crimping portion is supported at one point of the protruding second pressing portion in the longitudinal direction. Therefore, the crimp terminal may be crimped while falling in the radial direction, and the crimped state may not be stable.

  Furthermore, since the covering pressure-bonding portion is locally strongly compressed by the one protruding second pressing portion, there is a possibility that the covering pressing portion in the pressure-bonding state may be cracked, but the protruding second pressing portion. By forming a plurality of strips at predetermined intervals in the longitudinal direction, it is possible to support the coated crimping portion at a plurality of locations in the longitudinal direction even when the protruding second pressing portion is provided. Can be crimped while supporting.

  Further, three or more are arranged at predetermined intervals in the longitudinal direction, and are arranged between the first pressing part corresponding to the first pressure-bonding shape and the first pressing parts, and corresponding to the second pressure-bonding shape. A plurality of pressing portions, the second pressing portion protrudes inward in the radial direction from the first pressing portion, and includes a protrusion formed along the circumferential direction of the pressing surface, Of the second pressing part, the covering pressing part is pressed by a pressing surface in which the protruding height of the second pressing part on the wire pressing part side is set higher than the protruding height of the other second pressing part. Crimp the crimping part.

  Thereby, the 2nd crimping | compression-bonding shape by the 2nd press part by the side of the said crimping | compression-bonding part among the 2nd crimping | compression-bonding forms crimped with a higher compression rate than a 1st crimping | compression-bonding shape has a higher compression rate than other 2nd crimping | compression-bonding shapes. However, even if the conductor on the wire crimping portion side in the coated crimping portion is reduced in diameter by the crimping of the wire crimping portion, it forms a crimped state equivalent to or more than the other second crimping shape on the opposite side in the longitudinal direction. be able to.

Moreover, the crimping method of the connection structure and the crimping device of the connection structure can prevent the meat escape portion from being formed continuously in the longitudinal direction, so that the tip of the electric wire that penetrates through the meat escape portion can be prevented. Reaching to can be prevented.
Furthermore, by uniformizing the crimping state in the second crimping shape with a high compressibility formed at a predetermined interval in the longitudinal direction, it is possible to improve the water stoppage in the coated crimping part and ensure stable conductivity. it can.

  Moreover, as an aspect of the present invention, the substantially concave first pressing portion disposed between the projecting second pressing portions formed at a predetermined interval in the longitudinal direction with respect to the second pressing portion. The depth can be formed lower than the protruding height of the second pressing portion.

By this invention, it can prevent that a crack etc. arise in the covering crimping | compression-bonding part in a crimped state.
Specifically, the crimping method of the connection structure and the crimping device of the connection structure are accompanied by the crimping by the substantially concave first pressing part disposed between the plurality of protruding second pressing parts. Since the covering crimping portion is deformed so as to be fitted into the substantially concave first pressing portion, it is possible to prevent the covering crimping portion from being cracked in the crimped state.

  At this time, a depth of the substantially concave first pressing part disposed between the second pressing parts with respect to the second pressing part is formed lower than a protruding height of the second pressing part. Therefore, it is possible to prevent the covering pressure-bonding portion from being excessively fitted into the groove portion with the pressure bonding and partially reducing the thickness of the covering pressure-bonding portion.

Furthermore, since the covering crimping portion deformed along with the crimping is pushed into the substantially concave first pressing portion, the covering crimping portion can be crimped while being supported in a more stable state.
Therefore, the crimping method of the connection structure and the crimping device of the connection structure can more stably crimp the coated electric wire, and can prevent the coated crimping portion in the crimped state from being cracked.

Further, as an aspect of the present invention, the pressing surface having the inclined portion formed by gradually expanding the inner diameter from the wire tip end side to the insulating coating side in the longitudinal direction, The coated electric wire can be crimped by crimping the coated crimping portion while pressing the vicinity of the distal end on the wire distal end side with the inclined portion.
By this invention, it can prevent that the level difference part which arises in a conductor crimping | compression-bonding part and a covering crimping | compression-bonding part with crimping | bonding produces, and can improve the water stop in a crimping | compression-bonding part.

  The present invention also provides a conductor of the crimping portion in a state in which the wire tip portion where the insulation coating on the tip end side of the coated wire is peeled and the conductor is exposed is inserted into a crimping portion allowing insertion of the wire tip portion in the crimping terminal. A pair of terminal crimping members that deform the crimping portion and the covering crimping portion and crimp-connect the wire tip portion and the crimping terminal, and are formed by crimping a predetermined range in the longitudinal direction of the covering crimping portion. The crimping shape is the first crimping shape, and the crimping shape different from the first crimping shape is formed by caulking the other range, and the second crimping shape is the second crimping shape. The pressing surface is composed of a first pressing portion corresponding to the first pressing shape and a second pressing portion corresponding to the second pressing shape, and the first pressing portion and the second pressing portion on the pressing surface. Different parts Characterized by being configured in the shape.

According to the present invention, the crimp terminal and the coated electric wire can be more stably crimped, and the water-stopping property between the crimped portion and the insulating coating can be improved over a long period of time, thereby ensuring stable conductivity.
Specifically, the first pressure-bonding shape and the second pressure-bonding shape having different pressure-bonding shapes can be formed in the coated pressure-bonding portion by the first pressing portion and the second pressing portion in the pair of terminal pressure-bonding members.
For this reason, even if a meat escape portion occurs in the longitudinal direction, the gap between the coated crimping portion and the insulating coating can be made discontinuous, and moisture can penetrate into the crimped portion from the coated wire. Can be prevented, and stable conductivity can be ensured.

  As an aspect of the present invention, the pressing surface of the set of terminal crimping members has a configuration in which the second pressing portion is disposed between the first pressing portions spaced apart from each other along the longitudinal direction, and the pressing The second pressing portion on the surface may be provided with at least one protrusion that protrudes inward in the radial direction and is formed along the circumferential direction of the pressing surface.

According to the present invention, it is possible to make the meat escape portion discontinuous in the longitudinal direction and crimp the insulating coating to the coated crimp portion.
Specifically, since the covering crimping portion is crimped by a pressing surface having a protrusion in a set of terminal crimping members, the second crimping shape can be a strong crimping portion crimped at a higher compression ratio than the first crimping shape. .

For this reason, the meat escape portion in the first press-fit shape and the meat escape portion in the second press-fit shape can be formed at different positions in the radial direction. In other words, the meat escape portion of the cover crimping portion is formed in a state of being divided in the radial direction between a predetermined range and another range.
Accordingly, it is possible to prevent the meat escape portion from being continuously formed in the longitudinal direction, and it is possible to prevent moisture that enters through the meat escape portion from reaching the tip portion of the electric wire.

  Further, as an aspect of the present invention, a plurality of protrusions in the front end pair of terminal crimping members are formed at a predetermined interval in the longitudinal direction, and the groove portion configured in a substantially concave shape between the plurality of protrusions, The protrusion can be formed with a depth in the radial direction lower than the height in the radial direction of the protrusion.

According to the present invention, it is possible to more stably crimp the coated electric wire and to prevent the coated crimping portion in the crimped state from being cracked.
Specifically, since a plurality of protrusions in the pair of terminal crimping members are formed in the longitudinal direction, the coated crimping part can be supported at a plurality of locations in the longitudinal direction even if the protrusions are provided. For this reason, it can be crimped while supporting the coated crimping portion in a stable state.

  In addition, the groove formed by the plurality of protrusions can be deformed so that the coated crimped part fits into the groove with crimping, so that the coated crimped part in the crimped state can be prevented from cracking, and the coated wire is more stable. And can be crimped.

  Further, as an aspect of the present invention, the pressing surface of the set of terminal crimping members includes a boundary position of the first pressing portion and a boundary position of the second pressing portion of the set of terminal crimping members, Different shapes can be formed in the circumferential direction of the pressing surface.

According to the present invention, it is possible to make the meat escape portion discontinuous in the longitudinal direction and crimp the insulating coating to the coated crimp portion.
Specifically, since the covering crimping part is crimped by the pressing surface where the boundary position of the first pressing part and the boundary position of the second pressing part in the set of terminal crimping members are different in the circumferential direction, the meat escape in the first crimping shape The portion and the meat escape portion in the second crimping shape can be formed at different positions in the circumferential direction.

Thereby, since the meat escape part of the covering crimping part is formed in a state of being divided in the circumferential direction by a predetermined range and another range, it is possible to prevent the meat escape part from being continuously formed in the longitudinal direction.
As a result, it is possible to prevent moisture entering through the meat escape portion from reaching the tip portion of the electric wire, further improving the water stoppage at the coated crimping portion, and ensuring more stable conductivity.

Further, as an aspect of the present invention, the pressing surface having the inclined portion formed by gradually expanding the inner diameter from the wire tip end side to the insulating coating side in the longitudinal direction, The coated electric wire can be crimped by crimping the coated crimping portion while pressing the vicinity of the distal end on the wire distal end side with the inclined portion.
According to the present invention, at the time of crimping by a pair of terminal crimping members, it is possible to prevent the step portion generated between the conductor crimping portion and the coating crimping portion from being cracked and to improve the water-stopping property at the crimping portion. Can do.

  Further, as an aspect of the present invention, the terminal crimping member is constituted by a plurality of crimping members divided in the longitudinal direction corresponding to the crimping shape of the crimping part, and among the opposing surfaces facing the longitudinal direction of the crimping member While providing the latching | locking part in any one surface, while providing the to-be-latched part which latches the said latching | locking part in the other surface, among the said crimping | compression-bonding members, the said latching | locking part and the said latched At least one of the shape and the position of the erroneous locking prevention structure including the stopper can be varied.

  According to the present invention, when the plurality of crimping members in the terminal crimping member are arranged in a regular combination, the latching portion provided on the opposing surface of the crimping member and the latched portion are allowed to be latched. Can be placed in a regular combination.

Even if a plurality of crimping members are arranged differently from the regular combination, the locking or locking portion provided on the opposing surface of the crimping member is different in shape or position, so that locking is impossible. .
As a result, it is possible to reliably prevent a plurality of crimping members from being arranged in an incorrect combination, and to reliably combine them only in a fixed arrangement.

Furthermore, the present invention is characterized in that the covered electric wire and the crimp terminal are connected by the above-described crimping device for a connection structure or a set of terminal crimping members.
By this invention, the connection structure which improved the waterproofing property of a crimp terminal and a covered electric wire can be comprised with the crimping | compression-bonding apparatus of a connection structure, or a set of terminal crimping members.
Therefore, the connection structure can improve the water-stopping property between the crimp terminal and the covered electric wire and ensure stable conductivity by using the crimping device of the connection structure or a set of terminal crimping members.

Furthermore, the present invention is a connector in which the crimp terminal in the connection structure described above is disposed in a connector housing.
According to the present invention, it is possible to ensure a connection state having a certain water-stopping property and conductivity.

Furthermore, the present invention is a wire harness in which a plurality of the connection structures described above are bundled and the crimp terminals in the connection structure are mounted in a connector housing.
By this invention, the wire harness which ensured the more favorable water stop and electroconductivity can be comprised with the connection structure which improved the water stop and electroconductivity of a crimp terminal and a covered electric wire.

  According to this invention, the waterproofing method between the crimping part and the insulation coating is improved, and the crimping method of the connection structure, the crimping device of the connection structure, the connection structure, the terminal crimping member, the connector, and the A wire harness can be provided.

Explanatory drawing about the crimping connection structure of Example 1. FIG. The longitudinal side view of the crimping connection structure parted in the center of the width direction. Explanatory drawing about the crimping | compression-bonding part of a crimping connection structure. Explanatory drawing about a crimping | compression-bonding apparatus. Explanatory drawing about the crimping | compression-bonding of the crimping | compression-bonding part by a crimping | compression-bonding apparatus. Explanatory drawing about crimping | bonding of the wire barrel by a crimping | compression-bonding apparatus. Schematic about the wire barrel of a crimping connection structure. The schematic diagram of the insulation barrel which divided the meat escape part in the peripheral direction. Explanatory drawing about the other crimping | compression-bonding part by the crimping | compression-bonding apparatus of Example 2. FIG. The schematic diagram of the insulation barrel which divided | segmented the meat escape part into radial direction. Explanatory drawing about further crimping | compression-bonding of the crimping | compression-bonding part by a crimping | compression-bonding apparatus. Schematic of another insulation barrel which cut | disconnected the meat escape part to radial direction. Explanatory drawing about the other crimping | compression-bonding of the crimping | compression-bonding part by the crimping | compression-bonding apparatus of Example 3. FIG. Explanatory drawing about the other crimping | compression-bonding part shown in FIG. Explanatory drawing about the other crimping | compression-bonding part shown in FIG. The explanation perspective view about a connector. Explanatory drawing about the crimping connection structure of Example 4. FIG. Explanatory drawing about the other crimping | compression-bonding of the crimping | compression-bonding part by the crimping | compression-bonding apparatus of Example 5. FIG. Explanatory drawing about the other crimping | compression-bonding of the crimping | compression-bonding part by the crimping | compression-bonding apparatus of Example 6. FIG. The graph which shows the compression rate measurement result of a wire barrel part. The graph which shows the compression rate measurement result of an insulation barrel part.

An embodiment of the present invention will be described in detail with reference to the drawings.
Example 1
FIG. 1 is an explanatory view of a crimping connection structure 1 according to the first embodiment. Specifically, FIG. 1A is a vertical perspective view of a female crimp terminal 10 divided at the center in the width direction Y before crimping. FIG. 1B is a perspective view showing the female crimp terminal 10 and the covered electric wire 200 before crimping, and FIG. 1C is a perspective view of the female crimp terminal 10 and the covered electric wire 200 after crimping, that is, the crimp connection structure 1. It is.

  FIG. 2 is a longitudinal side view of the crimp connection structure 1 divided at the center in the width direction Y. FIG. FIG. 3 is an explanatory diagram of the crimping part 30 of the crimping connection structure 1. Specifically, FIG. 3A shows the crimping of the crimping connection structure 1 in a state of being transmitted through the box part 20 and the sealing part 34. FIG. 3B is a partial perspective view, and FIG. 3B is a cross-sectional view taken along line AA of the substantially U-shaped crimping portion 44 viewed from the front Xa side in the longitudinal direction X shown in FIG.

  As shown in FIGS. 1 and 2, the crimp connection structure 1 of the present embodiment is configured by connecting a covered electric wire 200 to a female crimp terminal 10. That is, the conductor tip portion 201a in which the insulation coating 202 on the tip end side of the wire tip portion 200a in the covered electric wire 200 is peeled and the aluminum core wire 201 is exposed is crimped and connected to the crimp portion 30 of the female crimp terminal 10. Yes.

  The covered electric wire 200 to be crimped and connected to the female crimp terminal 10 described above is an insulation coating in which the entire outer circumference of an aluminum core wire 201 formed by twisting a plurality of aluminum alloy wires and bundling them together is made of an insulating resin. 202 is covered.

  The wire tip portion 200a is a portion in which the coated tip portion 202a of the insulating coating 202 and the conductor tip portion 201a of the aluminum core wire 201 are arranged in series in this order toward the tip side in the tip portion of the covered electric wire 200.

  As shown in FIG. 1, the female crimp terminal 10 inserts insertion tabs in a male connector (not shown) from the front Xa, which is the distal end side in the longitudinal direction X, to the rear Xb. The allowed box portion 20 and the crimping portion 30 disposed at a rear Xb of the box portion 20 via a transition portion 20a having a predetermined length are integrally configured.

In addition, the above-mentioned longitudinal direction X is a direction that coincides with the longitudinal direction X in the covered electric wire 200 that crimps and connects the crimping portion 30, and the width direction Y intersects the longitudinal direction X in the plane direction. Direction.
Moreover, the side of the box part 20 with respect to the crimping part 30 is defined as the front Xa, and conversely, the side of the crimping part 30 with respect to the box part 20 is defined as the rear Xb (see FIG. 1).

More specifically, the female crimp terminal 10 is composed of a copper alloy strip (not shown) such as brass whose surface is tin-plated (Sn-plated), and is a hollow rectangular column as viewed from the front Xa side in the longitudinal direction X. This is a closed barrel type terminal comprising a box portion 20 and a crimping portion 30 having a hollow cross section when viewed from the rear Xb side.
Moreover, the crimping | compression-bonding part 30 of the male crimp terminal (not shown) provided with the insertion tab inserted in the box part 20 is also comprised by the same structure (refer FIG. 1).

The box portion 20 includes an elastic contact piece 21 that is bent toward the rear Xb in the longitudinal direction X and contacts an insertion tab (not shown) of the male connector to be inserted inside the front side of the hollow rectangular column. Yes.
Further, the box portion 20 is bent so that the side surface portions 23a and 23b continuously provided on both side portions in the width direction Y orthogonal to the longitudinal direction X of the bottom surface portion 22 are overlapped, and viewed from the front Xa side in the longitudinal direction X. It has a substantially rectangular shape.

The crimping part 30 before crimping is connected to both ends in the width direction Y orthogonal to the longitudinal direction X of the crimping bottom face 31, and only the rear Xb side can be inserted with the wire tip 200 a when viewed from the rear Xb side in the longitudinal direction X. Is formed with a substantially hollow (cylindrical) wire crimping portion 32 in which the tip end side and the entire peripheral surface portion are not opened (see FIGS. 1A and 1B).
Moreover, the crimping | compression-bonding part 30 has internal space which accept | permits insertion of the conductor front-end | tip part 201a of the aluminum core wire 201 exposed from the coating | coated front-end | tip part 202a of the insulation coating 202, and the coating | coated front-end | tip part 202a.

  The longitudinal length Xc (see FIG. 1B) of the crimping portion 30 is a conductor exposed at the front Xa in the longitudinal direction X from the front end surface 202aa on the front Xa side in the longitudinal direction X of the insulating coating 202. It is formed longer than the exposed length Xw in the longitudinal direction X at the distal end portion 201a.

  Further, the crimping portion 30 has a wire barrel 30a for crimping the conductor tip 201a of the aluminum core wire 201 and an insulation barrel 30b for crimping the coating tip 202a of the insulating coating 202 from the front Xa side to the rear Xb side. The inner circumference of the crimping portion 30 is formed in a circumferential length and shape corresponding to the outer diameter of the insulating coating 202.

  The wire barrel 30a is a portion corresponding to the conductor tip 201a on the front Xa side in the longitudinal direction X of the aluminum core wire 201 in a state where the wire tip 200a is inserted into the crimping portion 30, and can surround the conductor tip 201a. It is formed in a hollow shape.

The insulation barrel 30b is a portion corresponding to the coating tip portion 202a on the front Xa side in the longitudinal direction X of the insulating coating 202 in a state where the wire tip portion 200a is inserted into the crimping portion 30, and can surround the coating tip portion 202a. It is formed in a hollow shape.
In addition, the wire barrel 30a and the insulation barrel 30b are cylindrical shapes having substantially the same outer diameter in a state before pressure bonding.

Further, on the inner surface of the wire barrel 30a, three serrations 33, which are grooves in the width direction Y into which the aluminum core wire 201 bites in the state where the aluminum core wire 201 is crimped, are formed at a predetermined interval in the longitudinal direction X. Yes.
In addition, the serration 33 is formed in the groove | channel shape which continues in the width direction Y from the crimping | compression-bonding bottom face 31 of the crimping | compression-bonding part 30 to the inner periphery of both sides of the electric wire crimping part 32 (refer Fig.1 (a)).

Further, a sealing portion 34 is formed at the distal end portion of the crimping portion 30 so that the inner surfaces of the crimping portion 30 are brought into close contact with each other to prevent moisture from entering from the front Xa into the internal space of the crimping portion 30.
The sealing portion 34 includes a crimping bottom surface 31 facing the crimping portion 30 so as to crush the tip (front) side of the crimping portion 30 protruding forward Xa from the conductor tip surface 201aa of the conductor tip portion 201a. After deforming into a flat shape in which the inner surfaces of the wire crimping portion 32 are in close contact with each other, laser welding (for example, fiber laser welding) is performed in the width direction.

Further, the sealing portion deformed into a flat shape and laser welded is deformed into a substantially U-shaped cross section using a mold member (not shown) such as a crimper jig, and viewed from the front Xa side in the longitudinal direction X. A concave sealing portion 34a having a substantially U-shaped cross section in the width direction Y is formed (see FIGS. 1B and 2).
The sealing portion 34 may be laser welded after forming the concave sealing portion 34a, or may be laser welded while being deformed into a flat shape without forming the concave sealing portion 34a.

The crimp connection structure 1 configured by crimping and connecting the crimp portion 30 of the female crimp terminal 10 configured as described above to the covered electric wire 200 will be described.
As described above, the crimp connection structure 1 is configured by crimping and connecting the aluminum core wire 201 of the covered electric wire 200 to the crimp portion 30 of the female crimp terminal 10 described above (see FIGS. 1 to 3).

  Specifically, the conductor tip portion 201a of the aluminum core wire 201 exposed to the tip side of the insulating coating 202 of the covered electric wire 200 is positioned at the position in the longitudinal direction X of the conductor tip surface 201aa of the conductor tip portion 201a. The wire tip end portion 200 a of the covered wire 200 is inserted into the crimping portion 30 of the female crimp terminal 10 so that it is behind Xb from 34.

  At this time, the longitudinal length Xc (see FIGS. 1B and 1C) of the crimping portion 30 is changed from the coating front end surface 202aa on the front Xa side in the longitudinal direction X in the insulating coating 202 to the front Xa in the longitudinal direction X. Is formed longer than the exposed length Xw in the longitudinal direction X of the conductor tip 201a (see FIG. 1A), so that the coating tip surface of the insulating coating 202 extends from the conductor tip surface 201aa of the conductor tip 201a. The portion from 202aa to the rear Xb side is inserted into the crimping portion 30.

  After inserting the wire tip portion 200a of the covered wire 200 to a predetermined position in the crimping portion 30 as described above, the entire crimping portion 30 is pressurized and deformed in the reduced diameter direction by the crimping device 60A shown in FIG. The insulation coating 202 of the covered electric wire 200 and the conductor tip 201a of the aluminum core wire 201 are deformed so as to be covered, and the crimp portion 30 and the aluminum core wire 201 are crimped and connected.

At this time, the crimping portion 30 forms a substantially U-shaped crimping portion 44 having a substantially U-shaped cross section when viewed from the front Xa side in the longitudinal direction X on the rear Xb side with respect to the sealing portion 34 described above. (See FIGS. 1C and 2).
As shown in FIGS. 3A and 3B, the substantially U-shaped crimping portion 44 has a convex cross-sectional arc shape on the lower surface side formed by the crimping bottom surface 31 of the crimping portion 30, and the center in the width direction Y on the upper surface side. A concave portion 45 having a concave cross section and projections 46 projecting toward the upper surface side on both sides in the width direction Y of the concave portion 45 are configured.

  The crimping device 60A that crimps the crimping portion 30 so as to form the substantially U-shaped crimping portion 44 as described above receives the lower surface side of the crimping portion 30 in the female crimp terminal 10 as shown in FIGS. The anvil portion 61 and a crimper portion 62 that pressurizes the upper surface side of the crimping portion 30 are configured.

4A and 4B are explanatory views of the crimping device 60A. Specifically, FIG. 4A is a perspective view of the crimping device 60A, and FIG. 4B is a perspective view of the insulation anvil 61b and the insulation crimper 62b. .
FIG. 5 is an explanatory view of the crimping of the crimping portion 30 by the crimping device 60A. FIG. 6 is an explanatory view of a method for crimping the wire barrel 30a by the crimping device 60A. Specifically, FIG. 6A is a schematic diagram at the initial stage of the crimping operation for crimping the wire barrel 30a by the crimping device 60A. 6 (b) is a schematic diagram showing a state where the wire barrel 30a is crimped and connected by the crimping device 60A, and FIG. 7 is a schematic diagram showing the wire barrel 30a of the crimped connection structure 1. FIG.

  The anvil portion 61 includes a substantially U-shaped wire anvil 61a that receives the lower outer periphery of the wire barrel 30a of the crimp portion 30, and an approximately U-shaped insulation anvil 61b that receives the lower outer periphery of the insulation barrel 30b. Are arranged on the front Xa side and the rear Xb side in the longitudinal direction X (see FIGS. 4A and 4B).

  On the wire anvil 61a, a concave pressing surface 611 having a substantially U-shaped cross section for reducing the diameter of the wire barrel 30a of the crimping portion 30 into which the conductor tip portion 201a of the aluminum core wire 201 is inserted is formed facing upward. ing.

  The pressing surface of the insulation anvil 61b is formed on the front anvil portion 61c for crimping the front barrel portion 30b1 corresponding to the front portion in the longitudinal direction X of the insulation barrel 30b into the first crimping shape, and on the rear portion in the longitudinal direction X. A rear anvil part 61d for caulking the corresponding rear barrel part 30b2 in the second crimping shape is arranged in this order from the front Xa side to the rear Xb side in the longitudinal direction X (see FIG. 4 (b), see FIG.

  A concave pressing surface 612 having a substantially U-shaped cross section for receiving the front barrel portion 30b1 from below is formed on the front anvil portion 61c facing upward. Further, a concave pressing surface 613 having a substantially arc-shaped cross section for receiving the rear barrel portion 30b2 from below is formed on the rear anvil portion 61d.

  The crimper portion 62 includes a wire crimper 62a having a substantially convex cross section that deforms the upper outer periphery of the wire barrel 30a, and an insulation crimper 62b having an approximately U-shaped cross section that deforms the upper outer periphery of the insulation barrel 30b in the longitudinal direction. X is arranged on the front Xa side and the rear Xb side.

  In the wire crimper 62a, a projecting portion 621 having a substantially convex section for deforming the upper outer periphery of the wire barrel 30a into a concave section is projected downward. Further, at the lower end portion in the center in the width direction Y of the protruding portion 621, a recess forming portion 622 for forming the above-described recess 45 with respect to the upper outer periphery in the center in the width direction Y of the wire barrel 30a in the orthogonal cross section is provided below. It protrudes in a convex state toward.

  Further, on the pressure surface on the rear side of the protrusion 621 in the wire crimper 62a, the inner diameter is gradually increased from the front Xa side in the longitudinal direction X toward the rear Xb side, and the coating tip 202a of the insulating coating 202 is provided. An inclined portion 63 for pressurizing is formed.

  The pressing surface of the insulation crimper 62b is formed on the front crimper portion 62c for crimping the front barrel portion 30b1 corresponding to the front portion in the longitudinal direction X of the insulation barrel 30b into the first crimping shape, and on the rear portion in the longitudinal direction X. A rear crimper portion 62d for caulking the corresponding rear barrel portion 30b2 in the second crimping shape is arranged in this order from the front Xa side in the longitudinal direction X toward the rear Xb side.

  The front crimper portion 62c is formed with a concave pressing surface 623 having a substantially arc cross section for caulking the front barrel portion 30b1 from above. Further, the rear crimper portion 62d is formed with a concave pressing surface 624 having an upside down U-shaped cross section for caulking the rear barrel portion 30b2 from above.

  Further, the boundary position of the pressing surface of the concave pressing surface 612 and the concave pressing surface 623 is higher than the radial center of the insulation barrel 30b, and the boundary of the pressing surface of the concave pressing surface 613 and the concave pressing surface 624 is the upper side. The position is set to be lower than the radial center of the insulation barrel 30b.

When the crimping device 60A configured as described above is used to crimp-connect the female crimp terminal 10 and the covered electric wire 200 so that energization is possible, the electric wire tip portion 200a of the covered electric wire 200 is connected to the crimp portion of the female crimp terminal 10. 30 and the covering tip portion 202a of the insulating coating 202 in the covered electric wire 200 is inserted into the crimper portion 62 at a position that can be crimped by the inclined portion 63 of the wire crimper 62a.
That is, the covering front end portion 202a (covering front end surface 202aa) is inserted so as to be positioned between the front Xa side end portion in the longitudinal direction X of the inclined portion 63 and the rear end on the rear Xb side in the longitudinal direction X. (See FIG. 5).

After holding the crimping portion 30 in which the wire tip portion 200a of the female crimp terminal 10 is inserted between the anvil portion 61 and the crimper portion 62 (see FIGS. 5 and 6A), the crimper portion 62 is moved in the crimping direction Z. To work.
By the above-described operation, the wire barrel 30a and the insulation barrel 30b of the crimping portion 30 in the female crimp terminal 10 are caulked from above and below to cover the conductor tip 201a of the aluminum core wire 201 and the insulating coating 202 in the covered electric wire 200. It crimps | bonds to the front-end | tip part 202a, respectively.

That is, the wire barrel 30a of the crimping part 30 is crimped from above by the wire crimper 62a of the crimper part 62, and is pressed into the concave pressing surface 611 of the wire anvil 61a to be reduced in diameter in the width direction Y to be deformed into a substantially elliptical shape. (See the two-dot chain line in FIG. 6A).
Further, the wire barrel 30a is deeply pushed to a position reaching the bottom surface of the concave pressing surface 611, and is deformed into a crimping shape so as to become a substantially U-shaped crimping portion 44 (see FIG. 6B).

  In addition, the pressurizing surface of the inclined portion 63 in the wire crimper 62a presses the vicinity of the tip of the covering tip portion 202a of the insulating coating 202 covered with the boundary portion between the wire barrel 30a and the insulation barrel 30b of the crimping portion 30 from above. However, the above-mentioned boundary portion is crimped into an inclined shape corresponding to the inclined portion 63 and is crimped across the conductor tip portion 201a of the aluminum core wire 201 and the covering tip portion 202a of the insulating coating 202.

Further, the wire barrel 30a of the crimping part 30 is deformed into a crimping shape so as to become a substantially U-shaped crimping part 44, and the aluminum core wire 201 exposed from the insulating coating 202 on the tip side of the wire tip part 200a in the covered wire 200 is exposed. Is securely crimped to the conductor tip 201a (see FIG. 7).
Since the compression rate when caulking the wire barrel 30a is compressed to be approximately 60% with reference to the orthogonal cross section orthogonal to the longitudinal direction X before deformation, a predetermined performance can be ensured (FIG. 20). reference).

At the same time that the wire barrel 30a is crimped to the conductor tip portion 201a, the insulation barrel 30b of the crimp portion 30 in the female crimp terminal 10 is viewed from above by the front crimper portion 62c and the rear crimper portion 62d of the insulation crimper 62b. Clamp.
Further, the insulation anvil 61b is deformed into a substantially circular shape by reducing the diameter while being pushed into the concave pressing surface 612 of the front anvil portion 61c and the concave pressing surface 613 of the rear anvil portion 61d, and the insulating coating 202 is coated. It crimps | bonds with respect to the front-end | tip part 202a (refer FIG. 2, FIG. 8).

  The compression rate when caulking the insulation barrel 30b is compressed so as to be approximately 90% with reference to the orthogonal cross section orthogonal to the longitudinal direction X before deformation, so that a predetermined performance can be ensured (see FIG. 21).

  When the insulation barrel 30b is crimped, the front barrel portion 30b1 and the rear barrel portion 30b2 of the insulation barrel 30b are replaced with the front anvil portion 61c and the rear anvil portion 61d of the insulation anvil 61b, and the insulation crimper 62b. The front crimper portion 62c and the rear crimper portion 62d of the front crimper 62 are each radially deformed in the radial direction, and are crimped to different crimping shapes.

That is, the front barrel portion 30b1 of the insulation barrel 30b has a radial direction of the covered electric wire 200 with reference to a reference plane formed by the longitudinal direction X and the crimping direction Z of the female crimp terminal 10 (see FIG. 4A). Meat escape portions 30c1 are formed symmetrically on the upper side of the center.
In addition, on the rear barrel portion 30b2, a meat escape portion 30c2 is formed symmetrically on the lower side of the radial center of the covered electric wire 200 (see FIG. 8).

  Since the meat escape portion 30c1 on the front barrel portion 30b1 side and the meat escape portion 30c2 on the rear barrel portion 30b2 are formed at different positions in the circumferential direction W with respect to the insulation barrel 30b, the meat escape portions 30c1 and 30c2 Is divided in the circumferential direction W.

Thereby, it is possible to prevent the meat escape portions 30c1 and 30c2 from being formed along the longitudinal direction X of the insulation barrel 30b.
For this reason, it can prevent reliably that a water | moisture content penetrate | invades toward the inside of the wire barrel 30a crimped | bonded to the conductor front-end | tip part 201a of the aluminum core wire 201 from the insulation barrel 30b side crimped | bonded to the coating | coated front-end | tip part 202a of the insulation coating 202.

Therefore, by dividing the meat escape portions 30c1 and 30c2 in the circumferential direction W, the water stoppage in the insulation barrel 30b can be improved, and stable conductivity can be ensured.
As a result, the crimp connection structure 1 in which the female crimp terminal 10 and the covered electric wire 200 are crimp-connected, that is, the electric wire with the crimp terminal can be manufactured.

  Furthermore, since the inclined portion 63 of the wire crimper 62a crimps the boundary portion between the wire barrel 30a and the insulation barrel 30b into an inclined shape and does not cause a large step in the boundary portion, the wire barrel 30a, And the frictional resistance accompanying the crimping | compression-bonding produced between the boundary part of the insulation barrel 30b, and the pressurization surface of the wire crimper 62a and the insulation crimper 62b can be reduced.

  For this reason, not only can the pressure surfaces of the wire crimper 62a and the insulation crimper 62b be worn or damaged, but the stress applied to the boundary between the wire barrel 30a and the insulation barrel 30b can be reduced, It is possible to prevent cracks and cracks associated with the crimping.

  Furthermore, since the boundary portion between the wire barrel 30a and the insulation barrel 30b deformed into an inclined shape by the inclined portion 63 of the wire crimper 62a is in close contact with the coating tip portion 202a of the insulating coating 202, the insulation barrel 30b. It is possible to more positively prevent moisture from entering the wire barrel 30a from the side.

  The crimping connection structure 1 configured as described above seals the rear end side of the crimping portion 30 by crimping the insulation barrel 30b, and the tip end side of the crimping portion 30 with the concave sealing portion 34a. Since the aluminum core wire 201 is completely sealed so as not to be exposed to the outside, it is possible to prevent moisture from entering the crimping portion 30 from the front end side and the rear end side after the crimping.

  Therefore, moisture adheres to a contact portion between the copper or copper alloy female crimp terminal 10 which is a noble metal such as copper or copper alloy and the aluminum core wire 201 made of aluminum or aluminum alloy which is a base metal. It is possible to prevent the occurrence of electrolytic corrosion occurring in

(Example 2)
In the first embodiment described above, the crimping device 60A that crimps and crimps the insulation barrel 30b of the crimping portion 30 so that the meat escape portions 30c1 and 30c2 are divided in the circumferential direction W has been described. If crimping is performed by the crimping apparatus 60B of the second embodiment, the insulation barrel 30b can be crimped and crimped so that the meat escape portions 30c1, 30c2, and 30c3 are divided in the radial direction V.

  FIG. 9 is an explanatory view of the crimping of the crimping portion 30 by the crimping device 60B of the second embodiment, and FIG. 10 is a schematic view of the insulation barrel 30b in which the meat escape portions 30c1, 30c2, and 30c3 are divided in the radial direction V.

  Here, the structure of the insulation anvil 61bA and the insulation crimper 62bA excluding the wire anvil 61a and the insulation anvil 61b of the anvil part 61 and the wire crimper 62a of the crimper part 62 will be described.

  The insulation anvil 61bA of the anvil part 61 is formed to be slightly narrower than the interval in the width direction Y of the concave pressing surface 624 in the insulation crimper 62bA, and can be fitted into the concave pressing surface 624. Yes. In the insulation anvil 61bA, a concave pressing surface 614 for reducing the diameter of the insulation barrel 30b is protruded radially inward.

  On the central pressure surface in the longitudinal direction X of the concave pressing surface 614 in the insulation anvil 61bA, a concave portion forming portion 615 for deforming the central portion in the longitudinal direction X of the insulation barrel 30b into a substantially concave shape is directed inward in the radial direction. It protrudes.

  The insulation crimper 62bA of the crimper portion 62 is formed with a concave portion at the center of the concave pressing surface 624 of the insulation crimper 62bA in the longitudinal direction X so as to deform the center of the insulation barrel 30b in the longitudinal direction X into a substantially concave section. The portion 625 protrudes downward.

  In addition, the protrusion heights h1 and h2 in the radial direction of the concave forming portions 615 and 625 are set to be lower than the wall thickness t of the insulating coating 202 in the covered electric wire 200 (see FIG. 10).

  Further, the length of the strong compression portion in the longitudinal direction X in the recess forming portions 615 and 625 is set to a length included in the range of 0.2 mm, 0.6 mm, or 0.2 mm to 0.6 mm. Furthermore, the inner diameter of the pressing surface in the recess forming portions 615 and 625 is set to φ = 2.7 mm or 2.8 mm.

  When the insulation barrel 30b is crimped to the coating tip portion 202a of the insulating coating 202 by the above-described crimping device 60B, the insulation barrel 61bA has a concave pressing surface 614 and an insulation crimper 62bA has a concave pressing surface 624. 30b is reduced in diameter radially inwardly.

At the same time, the center in the longitudinal direction X of the insulation barrel 30b is compressed and deformed to a reduced diameter by the insulation anvil 61bA and the recess forming portions 615 and 625 of the insulation crimper 62bA.
Accordingly, a concave groove 626 having a shape corresponding to the concave forming portions 615 and 625 and having a width in the longitudinal direction X is continuously formed in the circumferential direction W along the insulation barrel 30b.

That is, the central barrel portion 30b3 of the insulation barrel 30b in which the concave groove portion 626 is formed is strongly compressed to a smaller diameter than the front barrel portion 30b1 and the rear barrel portion 30b2, that is, strongly compressed with a high compression ratio.
Thereby, the meat escape portion 30c3 of the central barrel portion 30b3 is formed radially inward from the meat escape portion 30c1 of the front barrel portion 30b1 and the meat escape portion 30c2 of the rear barrel portion 30b2, and the insulation barrel 30b is elongated. In the direction X, it is deformed stepwise.

  In the front barrel portion 30b1, the rear barrel portion 30b2, and the central barrel portion 30b3, the meat escape portions 30c1, 30c2, and 30c3 are formed at different positions in the radial direction V. Therefore, the meat escape portion 30c3 is the meat escape portion. 30c1 and 30c2 are divided in the radial direction V (see FIG. 10).

  As a result, the meat escape portions 30c1, 30c2, and 30c3 can be prevented from being formed along the longitudinal direction X of the insulation barrel 30b, and the adhesion of the insulation barrel 30b to the coated tip portion 202a is further enhanced. It is possible to prevent moisture from entering the inside of the wire barrel 30a from the side of the insulation barrel 30b.

  As described above, by dividing the meat escape portions 30c1, 30c2, and 30c3 in the radial direction V, the water stoppage in the insulation barrel 30b can be further improved, and stable conductivity can be ensured.

In addition, when the crimping is performed, a strong pressure-bonding portion that is crimped to the insulation barrel 30b at a high compression rate is formed. Therefore, even if the conductor tip 201a of the aluminum core wire 201 is extended by the crimping of the wire barrel 30a, the insulating coating 202 It can prevent that the coating | coated front-end | tip part 202a is extruded more than necessary toward the back Xb side from the insulation barrel 30b.
That is, the wire tip portion 200a of the covered wire 200 and the sheath tip portion 202a of the insulating coating 202 can be securely crimped and connected while being inserted into the normal position in the crimp portion 30 of the female crimp terminal 10.

In the above description, the front barrel portion 30b1, the rear barrel portion 30b2, and the central barrel portion 30b3 are crimped by crimping so that the meat escape portions 30c1, 30c2, and 30c3 are divided in the radial direction V.
That is, the meat escape portion 30c1 of the front barrel portion 30b1 and the meat escape portion 30c2 of the rear barrel portion 30b2 are divided in the radial direction V, and the meat escape portion 30c2 of the rear barrel portion 30b2 and the meat escape portion of the central barrel portion 30b3 are separated. Even the portion 30c3 is divided in the radial direction V.

  Although divided | segmented as mentioned above, as shown in FIG. 12, the insulation barrel 30b is comprised by the front side barrel part 30b4 and the rear side barrel part 30b5 crimped | bonded by the compression rate higher than the front side barrel part 30b4, and the front side barrel is comprised. The meat escape portion 30c4 formed in the portion 30b4 and the meat escape portion 30c5 formed in the rear barrel portion 30b5 may be divided in the radial direction V.

  FIG. 11 is an explanatory view of still another crimping of the crimping portion 30 by the crimping device 60B, and FIG. 12 is a schematic view of the insulation barrel 30b in which the meat escape portions 30c4 and 30c5 are divided in the radial direction V.

  As described above, the insulation barrel 30b composed of the front barrel portion 30b4 and the rear barrel portion 30b5 in which the meat escape portions 30c4 and 30c5 are formed includes an insulation anvil 61bA and an insulation crimper as shown in FIG. The insulation barrel 30b is formed by pressure-bonding to the coating tip 202a of the insulating coating 202 by 62bA.

The insulation anvil 61bA has a concave pressing surface 614 in the crimping device 60B arranged at the front Xa in the longitudinal direction X and a concave portion forming portion 615 arranged at the rear Xb in the longitudinal direction X.
The insulation crimper 62bA has a concave pressing surface 624 arranged at the front Xa in the longitudinal direction X, and a concave portion forming part 625 is arranged at the rear Xb in the longitudinal direction X.
The other configuration of the crimping apparatus 60B is the same as that of the crimping apparatus 60B shown in FIG.

  The pressure bonding of the insulation barrel 30b by the pressure bonding device 60B will be described in detail. The front barrel portion 30b4 is formed by reducing the diameter inward in the direction.

  At the same time, the recess forming portions 615 and 625 of the insulation anvil 61bA and the insulation crimper 62bA reduce the diameter by compressing the rear half of the longitudinal direction X in the insulation barrel 30b more strongly than the front side. A rear barrel portion 30b5 having a shape corresponding to the formation portions 615 and 625 is formed.

  That is, compared with the front barrel portion 30b4, the rear barrel portion 30b5 is strongly compressed to a small diameter, that is, strongly compressed at a high compression rate, so that the meat escape portion 30c4 of the front barrel portion 30b4 and the meat escape portion of the rear barrel portion 30b5 Since the portion 30c5 is stepped in the longitudinal direction X and formed at different positions in the radial direction V direction, the flesh escape portion 30c4 and the rear barrel portion 30b5 are divided in the radial direction V (see FIG. 12).

  As a result, the meat escape portions 30c4 and 30c5 can be prevented from being formed along the longitudinal direction X of the insulation barrel 30b, and the adhesion of the insulation barrel 30b to the coated tip portion 202a is further improved. It is possible to prevent moisture from entering the wire barrel 30a from the side of the modulation barrel 30b.

As described above, by dividing the meat escape portions 30c4 and 30c5 in the radial direction V, the water stoppage in the insulation barrel 30b can be further improved, and stable conductivity can be ensured.
The rear barrel portion 30b5 is crimped at a lower compression rate than the front barrel portion 30b4, and has a smaller diameter, but the front barrel portion 30b4 is crimped at a higher compression rate than the rear barrel portion 30b5. The front barrel portion 30b4 may be formed with a smaller diameter than the rear barrel portion 30b5.

  In this case, even if the conductor tip portion 201a on the box portion 20 side in the insulation barrel 30b is reduced in diameter by crimping the wire barrel 30a in the front Xa in the longitudinal direction X from the insulation barrel 30b, the conductor in the rear barrel portion 30b5. Crimping can be performed in a crimped state similar to the crimped state of the distal end portion 201a, and the effects relating to water-stopping can be further improved, and other effects can be similarly achieved.

(Example 3)
Next, another crimping of Example 3 in which the insulation barrel 30b is crimped and crimped so that the meat escape portions 30c1 and 30c2 are divided in the longitudinal direction X using the above-described crimping device 60B will be described.
FIG. 13 is an explanatory view of another crimping of the crimping portion 30 by the crimping apparatus 60B of the third embodiment.

The central pressing surface in the longitudinal direction X of the concave pressing surface 614 in the insulation anvil 61bA and the concave pressing surface 624 in the insulation crimper 62bA has a substantially cross-sectional shape for deforming the insulation barrel 30b into a concave shape radially inward. Trapezoidal protrusions 631 and 632 are formed.
The protrusions 631 and 632 protrude inward in the radial direction with respect to the concave pressing surfaces 614 and 624, respectively, and are formed in the circumferential direction W along the concave pressing surfaces 614 and 624.

  The height h3 of the protrusions 631 and 632 is set to be lower than the thickness t of the insulating coating 202 in the covered electric wire 200.

When the insulation barrel 30b is crimped to the coating tip 202a of the insulation coating 202 by the above-described crimping device 60B, the longitudinal direction of the insulation barrel 30b is caused by the projections 631 and 632 of the insulation anvil 61bA and the insulation crimper 62bA. The center of X is strongly compressed at a high compression rate radially inward than before and after that, that is, it is strongly pressure-bonded at a high compression rate.
Accordingly, one concave groove portion 627 having a shape corresponding to the protrusions 631 and 632 is continuously formed in the circumferential direction W along the insulation barrel 30b.

  That is, by forming a single concave groove portion 627 in the insulation barrel 30b, a meat escape portion 30c1 formed on the front Xa side in the longitudinal direction X of the insulation barrel 30b and a rear Xb side in the longitudinal direction X The formed meat escape portion 30c2 is divided in the longitudinal direction X (see FIG. 13).

Thereby, it is possible to prevent the meat escape portions 30c1 and 30c2 from being formed in the longitudinal direction X along the insulation barrel 30b.
For this reason, while being able to improve the adhesiveness of the insulation barrel 30b with respect to the coating | coated front-end | tip part 202a, it can prevent more reliably that a water | moisture content penetrate | invades with respect to the inside of the wire barrel 30a from the insulation barrel 30b side.

  As described above, by dividing the meat escape portions 30c1 and 30c2 in the longitudinal direction X by the single concave groove portion 627, it is possible to further improve the water stoppage in the insulation barrel 30b and to ensure stable conductivity. it can.

  Further, as shown in FIG. 14, the protrusions 631 and 632 described above are arranged at predetermined intervals in the longitudinal direction X with respect to the pressing surfaces of the concave pressing surface 614 of the insulation anvil 61bA and the concave pressing surface 624 of the insulation crimper 62bA. Two strips may be arranged at a distance. FIG. 14 is an explanatory view of another crimping of the crimping part 30 shown in FIG.

Between the protrusions 631 and 632, a groove 633 having a depth in the radial direction V that is lower than the height h3 of the protrusions 631 and 632 in the radial direction V is formed along the pressing surface of the concave pressing surfaces 614 and 624. Formed.
The heights h3 of the protrusions 631 and 632 are set to be lower than the thickness t of the insulating coating 202 in the covered electric wire 200.

  Further, the depth d of the groove portion 633, that is, the height d from the pressing surface of the concave pressing surfaces 614 and 624 to the groove bottom surface of the groove portion 633 is lower than the height h3 of the protrusions 631 and 632, and the groove of the groove portion 633. The bottom surface is set to be higher than the pressing surface of the concave pressing surfaces 614 and 624 (0 <d <h3).

In addition, the pushing width of the protrusions 631 and 632 can be set in a range of 0.1 mm to 0.9 mm. Moreover, the space | interval of the protrusions 631 and 632 can be set to the range of 0.5 mm-2.0 mm.
As a prescribed example of the pushing width, the pushing width = (length of the insulation barrel 30b ÷ 2 ÷ number of pushing [number of protrusions 631, 632]) or less can be set.
For example, when the length of the insulation barrel 30b is 3 mm and the number of push-in is two, the push-in width can be 0.75 mm or less. Also, the lower limit should be about the plate thickness considering the durability of the blade.

When the insulation barrel 30b is crimped to the coating tip 202a of the insulation coating 202 by the above-described crimping device 60B, the insulation is caused by the two protrusions 631 and 632 formed on the insulation anvil 61bA and the insulation crimper 62bA. The compression barrel 30b is strongly compressed inward in the radial direction, that is, strongly compressed at a high compression rate.
Due to the strong pressure bonding, the concave grooves 627 having shapes corresponding to the protrusions 631 and 632 are continuously formed in the circumferential direction W along the insulation barrel 30b, and two strips are arranged in the longitudinal direction X at predetermined intervals. The

  That is, by forming the two concave groove portions 627 in the insulation barrel 30b, the meat escape portion 30c1 formed on the front Xa side in the longitudinal direction X of the insulation barrel 30b and the rear Xb side in the longitudinal direction X are formed. The formed meat escape portion 30c2 and the meat escape portion 30c3 formed at the center in the longitudinal direction X are divided in the longitudinal direction X (see FIG. 14).

  Thereby, rather than forming a single concave groove portion 627 (see FIG. 13), the adhesion of the insulation barrel 30b to the coating tip portion 202a of the insulating coating 202 can be further improved, and from the side of the insulation barrel 30b. It can prevent more reliably that a water | moisture content penetrate | invades with respect to the inside of the wire barrel 30a, and can further improve a water stop.

Furthermore, the insulation barrel 30b can be stably supported by the two protrusions 631 and 632 formed on the insulation anvil 61bA and the insulation crimper 62bA.
For this reason, the direction, position, height, and the like of the insulation barrel 30b can be prevented from being displaced at the time of crimping, and the insulation barrel 30b can be crimped by crimping more accurately into a desired crimping shape.

  Furthermore, since the groove 633 between the protrusions 631 and 632 is set to be lower than the height h3 of the protrusions 631 and 632, the center of the insulation barrel 30b is the protrusion 631, at the time of crimping. Even if it tries to fit in the groove part 633 between 632, since the groove part 633 is shallow, it can prevent fitting more than the depth of the groove part 633. FIG.

Thereby, it can prevent that the thickness of the part fitted in the groove part 633 of the insulation barrel 30b becomes thin partially, or it deform | transforms into a shape with a small curvature.
As a result, for example, a crack or a crack can be prevented from occurring in the portion fitted in the groove 633 of the insulation barrel 30b, and a water-stopped state can be maintained.

  Further, similarly to the above-described protrusions 631 and 632 shown in FIG. 14, as shown in FIG. 15, the protrusions 631 (631a and 631b) and 632 (632a and 632b) are replaced with the concave pressing surface 614 of the insulation anvil 61bA. And two strips are arranged at a predetermined interval in the longitudinal direction X with respect to the pressing surface of the concave pressing surface 624 of the insulation crimper 62bA.

  Further, the front Xa in the longitudinal direction X, that is, the protrusions 631a and 632a on the box portion 20 side may be formed higher than the rear Xb in the longitudinal direction X, that is, the protrusions 631b and 632b on the electric wire tip end 200a side. Since other configurations are the same as the other configurations shown in FIG. 14, detailed description thereof is omitted.

  The two protrusions 631 and 632 will be described in detail. The heights h3 (h3a and h3b) of the protrusions 631 and 632 are set to be lower than the wall thickness t of the insulating coating 202 in the covered electric wire 200, and The height h3a of the protrusions 631a and 632a is set higher than the height h3b of the protrusions 631b and 632b (t> h3a> h3b).

  When the insulation barrel 30b is crimped to the coating tip 202a of the insulation coating 202 by the crimping device 60B configured as described above, the two protrusions 631 and 632 formed on the insulation anvil 61bA and the insulation crimper 62bA. Thus, the insulation barrel 30b is strongly compressed inward in the radial direction, that is, it is strongly pressed with a high compression rate.

  Due to the strong pressure bonding, concave grooves 627 (627a, 627b) having shapes corresponding to the protrusions 631, 632 are continuously formed in the circumferential direction W along the insulation barrel 30b, and are spaced apart in the longitudinal direction X by a predetermined interval. 2 are arranged.

At this time, the concave groove 627a formed by the protrusions 631a and 632a on the front Xa in the longitudinal direction X is formed deeper than the concave groove 627b formed by the protrusions 631b and 632b on the rear Xb.
That is, the compression rate of the concave groove portion 627a formed by the protrusions 631a and 632a on the front Xa in the longitudinal direction X is higher than the compression rate of the concave groove portion 627b formed by the protrusions 631b and 632b.

Therefore, even if the conductor tip portion 201a on the box portion 20 side in the insulation barrel 30b is reduced in diameter by crimping the wire barrel 30a in the front direction Xa in the longitudinal direction X from the insulation barrel 30b, the conductor tip portion 201a is reduced in diameter. It is possible to crimp the wire end portion 200a that has not been pressed in the same crimping state as the crimping state in the concave groove portion 627b that is strongly compressed at a predetermined compression rate.
Thereby, while further improving the effect regarding the water-stopping property by forming the two concave groove portions 627 as described above, other effects can be similarly achieved.

Next, an example in which the above-described crimp connection structure 1a using the female crimp terminal 10 and the crimp connection structure 1b using the male crimp terminal (not shown) are respectively attached to the pair of connector housings 300. Will be described with reference to the perspective view of the connector shown in FIG.
The crimp connection structure 1a is a connection structure using a female crimp terminal 10, and the crimp connection structure 1b is a connection structure using a male crimp terminal.

  By mounting the above-described crimp connection structure 1 (1a, 1b) on each of the connector housings 300, the female connector 3a and the male connector 3b having reliable conductivity can be configured.

  In the following description, an example is shown in which both the female connector 3a and the male connector 3b are connectors of the wire harness 301 (301a, 301b). It may be a connector of the auxiliary machine.

Specifically, as shown in FIG. 16, a crimp connection structure 1a constituted by a female crimp terminal 10 is attached to a female connector housing 300 to constitute a wire harness 301a including a female connector 3a.
Further, the crimp connection structure 1b configured by the male crimp terminal is mounted on the male connector housing 300 to configure the wire harness 301b including the male connector 3b.

By fitting the female connector 3a and the male connector 3b configured as described above, the wire harness 301a and the wire harness 301b can be connected.
Since the crimp connection structure 1 is attached to the connector housing 300, the connection of the wire harness 301 having reliable conductivity can be realized.

Example 4
In the first to third embodiments described above, an example is described in which the insulation barrel 30b of the crimping portion 30 formed in the size cylinder having the same diameter along the longitudinal direction X is crimped so that the meat escape portions 30c1 and 30c2 are divided. However, as shown in FIG. 17, the insulation barrel 30 b of the crimping part 30 formed in a stepped shape having different diameters in the longitudinal direction X is crimped so that the meat escape parts 30 c 1 and 30 c 2 are divided in the circumferential direction W. May be.

  FIG. 17 is an explanatory view of the crimping connection structure 1 of Example 4. Specifically, FIG. 17A is a perspective view showing the female crimp terminal 10 and the covered electric wire 200 before crimping, and FIG. ) Is a perspective view of the female crimp terminal 10 and the covered electric wire 200 after crimping, that is, the crimp connection structure 1.

  Specifically, the crimping portion 30 of the female crimp terminal 10 has a wire barrel 30a, a stepped portion 30c, and an insulation barrel 30b arranged in this order from the front Xa side in the longitudinal direction X toward the rear Xb side. , It is composed integrally.

  The wire barrel 30a is a portion corresponding to the conductor tip portion 201a of the aluminum core wire 201 in a state where the wire tip portion 200a of the covered electric wire 200 is inserted, and is substantially equal to or slightly equal to the outer diameter of the conductor tip portion 201a. It has a smaller diameter than the insulation barrel 30b having a large inner diameter.

  The insulation barrel 30b is a portion corresponding to the coating tip portion 202a of the insulating coating 202 in a state where the wire tip portion 200a of the coated wire 200 is inserted, and is substantially equal to or slightly equal to the outer diameter of the coating tip portion 202a. It has a large inner diameter.

  The stepped portion 30c is not a stepped shape orthogonal to the longitudinal direction X, but is formed in a stepped shape such that the diameter gradually decreases from the insulation barrel 30b to the wire barrel 30a.

  The insulation barrel 30b of the crimp part 30 having the above-described step shape has the electric wire tip portion 200a inserted into the crimp part 30 as compared with the insulation barrel 30b of the crimp part 30 having no step shape of the first to third embodiments. In the inserted state, the gap between the insulating coating 202 and the coating tip 202a can be further reduced.

That is, when the electric wire tip portion 200a of the covered electric wire 200 is inserted into the crimping portion 30 having a stepped shape, when the crimping device 60A of Example 1 is crimped and crimped, the insulation barrel 30b of the crimping portion 30 is The insulation coating 202 can be more reliably crimped to the coating tip 202a.
In addition, since the amount of compression inward in the radial direction at the time of crimping connection with the coating tip 202a can be suppressed, it is possible to prevent the occurrence of surplus.

Furthermore, since the meat escape portions 30c1 and 30c2 formed in the insulation barrel 30b are divided and crimped in the circumferential direction W, the water stoppage in the insulation barrel 30b can be further improved, and more stable conductivity can be obtained. Can be secured.
As a result, operations and effects substantially equivalent to or better than those of the first to third embodiments can be achieved.

  In the above-described fourth embodiment, the example in which the insulation barrel 30b of the pressure-bonding portion 30 having a step shape is pressure-bonded so that the meat escape portions 30c1 and 30c2 are divided in the circumferential direction W has been described. The escape portions 30c1 to 30c5 are crimped so as to be divided in the radial direction V (see FIGS. 10 and 12), or the meat escape portions 30c1 to 30c3 are divided in the longitudinal direction X at the concave groove portions 627 (627a and 627b). As shown in FIG. 13, FIG. 14, and FIG. 15, the operation and effects substantially the same as those of the first to fourth embodiments can be achieved.

(Example 5)
Next, the other crimping of Example 5 which crimps the insulation barrel 30b by crimping the insulation barrel 30b so that the meat escape portions 30c1 and 30c2 are divided in the longitudinal direction X using the above-described crimping device 60B will be described.
FIG. 18 is an explanatory diagram of other crimping of the crimping portion 30 by the crimping apparatus 60B of the fifth embodiment.

In detail, the insulation anvil 61b in the anvil part 61 is comprised by the some division | segmentation anvil part 61b1, 61b2, 61b3, 61b4, 61b5 divided | segmented into the longitudinal direction X corresponding to the crimping | compression-bonding shape of the insulation barrel 30b.

One of the opposing surfaces facing the longitudinal direction X in the divided anvil portions 61b1 to 61b5 is provided with a convex locking portion 61F1, while the other surface is a concave shape for locking the locking portion 61F1. A locked portion 61F2 is provided.
Between the divided anvil parts 61b1 to 61b5, the erroneous locking preventing structures including the locking part 61F1 and the locked part 61F2 are provided at different positions.

  The insulation crimper 62b in the crimper portion 52 is composed of a plurality of divided crimper portions 62b1, 62b2, 62b3, 62b4, 62b5 divided in the longitudinal direction X corresponding to the crimping shape of the insulation barrel 30b.

Division while the one side one of the facing surface that faces in the longitudinal direction X is provided a convex locking portion 62F1 of the crimper unit 6 2 b2~6 2 b5, the other surface engaging portion 6 2 F1 A recessed locked portion 62F2 is provided to lock the.
Between the divided crimper portions 62b1 to 62b5, the erroneous locking preventing structures including the locking portion 62F1 and the locked portion 62F2 are also provided at different positions.

That is, when the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5 are arranged in a regular combination, the positions of the locking part 61F1 and the locked part 61F2 provided on the opposing surfaces of the divided anvil parts 61b1 to 61b5 Since they coincide with each other, mutual locking is allowed.
Since the positions of the locking portion 62F1 and the locked portion 62F2 provided on the opposing surfaces of the divided crimper portions 62b1 to 62b5 are also coincident with each other, mutual locking is also allowed.

Thereby, division | segmentation anvil part 61b1-61b5 and division | segmentation crimper part 62b1-62b5 can be arrange | positioned by a regular combination (refer FIG. 18).
Even if the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5 are arranged to be different from the regular combination, the locking part 61F1, the locked part 61F2, the locking part 62F1, and the locked part Since the locking position with 62F2 is different, locking is impossible.

As a result, it is possible to reliably prevent the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5 from being arranged in an incorrect combination, and to combine them only in a fixed arrangement.

(Example 6)
Next, the erroneous locking prevention structure including the locking portion 61F1 and the locked portion 61F2 described above and the locking portion 62F1 and the locked portion 62F2 is provided in different shapes, and using the crimping device 60B, Another crimping of Example 6 will be described in which the insulation barrel 30b is crimped and crimped so that the meat escape portions 30c1 and 30c2 are divided in the longitudinal direction X.
FIG. 19 is an explanatory diagram of other crimping of the crimping section 30 by the crimping apparatus 60B of the sixth embodiment.
Here, the groove 633 formed between the protrusions 631 and 632 is formed at the same height as the concave pressing surfaces 614 and 624.

Specifically, the erroneous locking prevention structures including the locking portions 61F1 and the locked portions 61F2 are provided in different shapes between the split anvil portions 61b1 to 61b5 of the insulation anvil 61b described in the fifth embodiment.

  Between the divided crimper portions 62b1 to 62b5 of the insulation crimper 62b, the erroneous locking prevention structures including the locking portion 62F1 and the locked portion 62F2 are provided in different shapes.

That is, when the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5 are arranged in a regular combination, the shapes of the locking part 61F1 and the locked part 61F2 provided on the opposed surfaces of the divided anvil parts 61b1 to 61b5 Since they coincide with each other, mutual locking is allowed.
Since the shapes of the locking portion 62F1 and the locked portion 62F2 provided on the opposing surfaces of the divided crimper portions 62b1 to 62b5 also coincide with each other, mutual locking is also allowed.

Thereby, division | segmentation anvil part 61b1-61b5 and division | segmentation crimper part 62b1-62b5 can be arrange | positioned by a regular combination (refer FIG. 19).
Even if the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5 are arranged to be different from the regular combination, the locking part 61F1, the locked part 61F2, the locking part 62F1, and the locked part Since the shape of 62F2 is different, locking is impossible.

As a result, it is possible to reliably prevent the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5 from being arranged in an incorrect combination, and to combine them only in a fixed arrangement.

In addition, the erroneous locking prevention structure including the locking part 61F1 and the locked part 61F2 and the locking part 62F1 and the locked part 62F2 may be provided at different positions and in different shapes, and higher accuracy. In addition, it is possible to prevent erroneous combinations more reliably.
Further, the shapes of the locking portion 61F1, the locked portion 61F2, the locking portion 62F1, and the locked portion 62F2 are not limited to the shapes shown in FIGS.

In the correspondence between the configuration of the present invention and the embodiment,
The connection structure of the present invention corresponds to the crimp connection structure 1, 1a, 1b of the embodiment,
Similarly,
The crimp terminal corresponds to the female crimp terminal 10,
The conductor crimping part corresponds to the wire barrel 30a,
The coated crimping part corresponds to the insulation barrel 30b,
The conductor corresponds to the aluminum core wire 201,
A set of crimping means and terminal crimping members correspond to the insulation anvils 61b and 61bA and the insulation crimpers 62b and 62bA.
The plurality of crimping members correspond to the divided anvil parts 61b1 to 61b5 and the divided crimper parts 62b1 to 62b5,
The first pressing portion corresponds to the concave pressing surface 612 and the concave pressing surface 623,
The second pressing portion corresponds to the concave pressing surface 613 and the concave pressing surface 624,
The groove portion corresponds to the concave groove portions 626 and 627,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

  In the above-described embodiment, the example in which the inclined portion 63 is formed on the wire crimper 62a of the crimper portion 62 has been described. For example, the inclined portion 63 is formed on the insulation crimper 62b (front crimper portion 62c), or You may form across the boundary part with the insulation crimper 62b.

  When the insulation coating 202 inserted in the crimping portion 30 of the female crimp terminal 10 is crimped by the inclined portion 63 of the wire crimper 62a, for example, the coating tip 202a of the insulating coating 202 is moved in the longitudinal direction X in the inclined portion 63. It may be inserted up to a position that coincides with the front Xa side end portion, or may be inserted and crimped at a position that coincides with the rear end in the longitudinal direction X on the rear Xb side.

  Furthermore, the meat escape portion of the insulation barrel 30b formed at the time of crimping may be divided into a plurality of two or more locations with respect to the longitudinal direction X of the insulation barrel 30b. Further, the number of the concave groove portions 626 and 627 formed on the outer peripheral surface of the insulation barrel 30b may be changed to a plurality of two or more.

  In that case, three or more protrusions 631 and 632 may be arranged in the longitudinal direction X at a predetermined interval. Further, when three or more protrusions 631 and 632 are arranged, at least the protrusions 631 and 632 on the side of the box part 20 may be formed higher than the other protrusions 631 and 632, and a plurality of protrusions on the box part 20 side may be formed. The parts 631 and 632 may be formed higher than the other protrusions 631 and 632, and further, the protrusions 631 and 632 on the box part 20 side are sequentially lowered from the protrusions 631 and 632 toward the rear Xb in the longitudinal direction X. It may be formed.

  Furthermore, the covered electric wire 200 connected to the female crimp terminal 10 is not limited to covering the aluminum-based conductor made of aluminum or aluminum alloy with the insulating coating 202, but for example, copper-based made of copper or copper alloy. The conductor may be coated with an insulating coating 202. The conductor may be a heterogeneous mixed conductor in which aluminum strands are arranged and bundled around a copper-based strand, or conversely, a copper-based strand around an aluminum strand. It may be a heterogeneous mixed conductor in which wires are arranged and bundled.

DESCRIPTION OF SYMBOLS 1, 1a, 1b ... Crimp connection structure 3a ... Female connector 3b ... Male connector 10 ... Female crimp terminal 30 ... Crimp part 30a ... Wire barrel 30b ... Insulation barrel 30c ... Step part 30b1 ... Front side barrel part 30b2 ... Rear barrel portion 30b3 ... Center barrel portion 30c1, 30c2, 30c3 ... Meat escape portion 32 ... Electric wire crimping portion 60A, 60B ... Crimping device 61 ... Anvil portion 61a ... Wire anvil 61b, 61bA ... Insulation anvil 61c ... Front anvil portion 61d ... rear anvil part 61B1～61b5 ... split anvil portion 61F1 ... locking portion 61F2 ... engaging portion 62 ... crimper unit 62a ... wire crimper 62b, 62Ba ... insulation crimper 62c ... front crimper unit 62d ... rear crimper unit 62b ˜62b5: split crimper portion 62F1: locking portion 62F2: locked portion 63 ... inclined portion 611, 612, 613, 614 ... concave pressing surface 615, 622, 625 ... concave portion forming portion 623, 624 ... concave pressing surface 626 627 ... concave groove 631, 632 ... projection 633 ... groove 200 ... covered electric wire 200a ... electric wire tip 201 ... aluminum core wire 201a ... conductor tip 202 ... insulating coating 202a ... covered tip 300 ... connector housing V ... radial direction W ... Circumferential direction X ... longitudinal direction Y ... width direction Z ... crimping direction

Claims (27)

Covering the conductor with an insulation coating, stripping the insulation coating on the tip side and exposing the conductor, a covered electric wire with a wire tip,
A crimping terminal comprising a crimping part integrally constituted by a crimping part for crimping by crimping the vicinity of the tip of the insulation coating and a crimping part for crimping by crimping the tip of the wire. A crimping method of a connection structure for crimping and connecting a wire tip,
A crimping shape formed by caulking a predetermined range in the longitudinal direction in the coated crimping portion is a first crimping shape, and a crimping shape formed by caulking the other range is a second crimping shape,
When crimping by crimping the coated crimped portion into which the coated wire is inserted along the longitudinal direction of the coated wire from the radial direction of the coated wire using a set of crimping means,
The first pressing portion corresponding to the first pressure-bonding shape and the second pressing portion corresponding to the second pressure-bonding shape constitute a first pressing surface that presses the covering pressure-bonding portion in the set of pressure-bonding means. A method for crimping a connection structure, wherein the crimping shape is different from that of the second crimping shape. Between the first pressing parts spaced apart by a predetermined distance along the longitudinal direction, the first pressing parts protrude toward the inner side in the radial direction and have at least one protruding part formed along the circumferential direction of the pressing surface. The crimping method of the connection structure according to claim 1, wherein the coated crimping portion is crimped by the pressing surface on which the second pressing portion is arranged to crimp the coated electric wire. A plurality of the protrusions formed at a predetermined interval in the longitudinal direction and a substantially concave shape between the plurality of protrusions, and the radial depth lower than the radial height of the protrusions. The crimping method of the connection structure according to claim 2, wherein the covered crimping portion is crimped by the pressing surface having the groove portion formed in step 1. The boundary surface in the first pressing part of the set of crimping means and the boundary position in the second pressing part of the pair of crimping means are different from each other in the circumferential direction of the pressing surface by the pressing surface. The crimping method of the connection structure according to any one of claims 1 to 3, wherein the coated electric wire is crimped by crimping a crimping portion. By the pressing surface having the inclined portion formed by gradually expanding the inner diameter from the electric wire front end side to the insulating coating side in the longitudinal direction, the vicinity of the front end on the electric wire front end side in the coated crimping portion is The method for crimping a connection structure according to any one of claims 1 to 4 , wherein the sheathed crimping portion is crimped and the sheathed electric wire is crimped while being pressed by the inclined portion. Covering the conductor with an insulation coating, stripping the insulation coating on the tip side and exposing the conductor, a covered electric wire with a wire tip,
A crimping terminal comprising a crimping part integrally constituted by a crimping part for crimping by crimping the vicinity of the tip of the insulation coating and a crimping part for crimping by crimping the tip of the wire. A crimping method of a connection structure for crimping and connecting a wire tip,
A crimping shape formed by caulking a predetermined range in the longitudinal direction of the covering crimping portion is a first crimping shape, and a crimping shape different from the first crimping shape is formed by caulking the other range. Shape and
In a set of crimping means for crimping by crimping the crimped portion in which the wire tip is inserted along the longitudinal direction of the coated wire in the radial direction of the coated wire,
3 or more arranged at a predetermined interval in the longitudinal direction, and a first pressing portion corresponding to the first pressure-bonding shape,
It is arranged between the first pressing parts, and is configured with a second pressing part corresponding to the second pressure-bonding shape,
The second pressing portion is configured by a protruding portion formed along the circumferential direction of the pressing surface while protruding radially inward from the first pressing portion,
By a pressing surface in which the protruding height of the second pressing portion on the wire tip end side among the plurality of second pressing portions is set higher than the protruding height of the second pressing portion on the opposite side in the longitudinal direction,
A method for crimping a connection structure that presses the cover crimping portion and crimps the first crimping shape and the second crimping shape differently. The depth of the substantially concave first pressing portion disposed between the protruding second pressing portions formed at a predetermined interval in the longitudinal direction with respect to the second pressing portion is set to the second pressing portion. The method for crimping a connection structure according to claim 6, wherein the connection structure is formed lower than a protruding height of the portion. By the pressing surface having the inclined portion formed by gradually expanding the inner diameter from the electric wire front end side to the insulating coating side in the longitudinal direction, the vicinity of the front end on the electric wire front end side in the coated crimping portion is The method for crimping a connection structure according to claim 6 or 7, wherein the sheathed crimping portion is crimped and the sheathed electric wire is crimped while being pressed by the inclined portion. Covering the conductor with an insulation coating, stripping the insulation coating on the tip side and exposing the conductor, a covered electric wire with a wire tip,
A crimping terminal comprising a crimping part integrally constituted by a crimping part for crimping by crimping the vicinity of the tip of the insulation coating and a crimping part for crimping by crimping the tip of the wire. A crimping device for a connection structure that crimps and connects a wire tip,
A set of crimping means for crimping the coated crimped portion into which the coated electrical wire is inserted along the longitudinal direction of the coated electrical wire from the radial direction of the coated electrical wire;
A crimping shape formed by caulking a predetermined range in the longitudinal direction in the coated crimping portion is a first crimping shape, and a crimping shape formed by caulking the other range is a second crimping shape,
A pressing surface that presses the coated crimping portion in the set of crimping means,
A first pressing portion corresponding to the first pressure bonding shape and a second pressing portion corresponding to the second pressure bonding shape,
A crimping device for a connection structure in which the first pressing portion and the second pressing portion on the pressing surface are configured in different shapes. The pressing surface,
A configuration in which the second pressing portion is disposed between the first pressing portions spaced apart by a predetermined distance along the longitudinal direction,
In the second pressing part on the pressing surface,
The crimping device for a connection structure according to claim 9, further comprising at least one protrusion that protrudes inward in the radial direction and is formed along a circumferential direction of the pressing surface. A plurality of the protrusions are formed at predetermined intervals in the longitudinal direction,
A groove portion configured in a substantially concave shape between the plurality of protrusions,
The crimping device for a connection structure according to claim 10, wherein the crimping device is formed with a depth in the radial direction lower than a height in the radial direction of the protrusion. The pressing surface,
The boundary position in the first pressing portion of the set of crimping means and the boundary position in the second pressing portion of the set of crimping means are configured in different shapes in the circumferential direction of the pressing surface. The crimping apparatus for a connection structure according to claim 11. In the pressing surface corresponding to the vicinity of the tip on the wire tip end side in the covering crimp portion,
13. The device according to claim 9, further comprising an inclined portion that gradually expands the inner diameter from the wire distal end side toward the insulating coating side in the longitudinal direction and presses the vicinity of the distal end of the insulating coating. The crimping | compression-bonding apparatus of the connection structure as described in one. The connection structure which connected the said covered electric wire and the said crimp terminal with the crimping | compression-bonding apparatus of any one connection structure of Claim 9-13. Covering the conductor with an insulation coating, stripping the insulation coating on the tip side and exposing the conductor, a covered electric wire with a wire tip,
A crimping terminal comprising a crimping part integrally constituted by a crimping part for crimping by crimping the vicinity of the tip of the insulation coating and a crimping part for crimping by crimping the tip of the wire. A crimping device for a connection structure that crimps and connects a wire tip,
A set of crimping means for crimping by crimping the crimped portion in which the wire tip is inserted along the longitudinal direction of the coated wire in the radial direction of the coated wire;
A crimping shape formed by caulking a predetermined range in the longitudinal direction of the covering crimping portion is a first crimping shape, and a crimping shape different from the first crimping shape is formed by caulking the other range. Shape and
A pressing surface that presses and presses the coated pressure-bonding portion of the set of pressure-bonding means;
3 or more arranged at a predetermined interval in the longitudinal direction, and a first pressing portion corresponding to the first pressure-bonding shape,
It is arranged between the first pressing parts, and is configured with a second pressing part corresponding to the second pressure-bonding shape,
The second pressing portion is
It protrudes toward the radially inner side from the first pressing portion, and is configured by a protrusion formed along the circumferential direction of the pressing surface,
A crimping apparatus for a connection structure, wherein a protruding height of a second pressing portion on the wire tip end side among the plurality of second pressing portions is set higher than the protruding height of a second pressing portion on the opposite side in the longitudinal direction. The depth of the substantially concave first pressing portion disposed between the protruding second pressing portions formed at a predetermined interval in the longitudinal direction with respect to the second pressing portion is set to the second pressing portion. The crimping device for a connection structure according to claim 15, wherein the crimping device is formed lower than the protruding height of the portion. In the pressing surface corresponding to the vicinity of the tip on the wire tip end side in the covering crimp portion,
The inside of the said electric wire front-end | tip part side in the said longitudinal direction is gradually enlarged toward the said insulation coating side, The inclination part which presses the front-end | tip vicinity of the said insulation coating is provided. Crimping device for connection structure. The connection structure which connected the said covered electric wire and the said crimp terminal with the crimping | compression-bonding apparatus of any one connection structure of Claim 15 to 17. The conductor crimping part and the covering crimping of the crimping part are inserted into the crimping part that allows the insertion of the tip of the electric wire in the crimping terminal by stripping the insulation coating on the leading end side of the covered electric wire and exposing the conductor. A set of terminal crimping members for deforming the portion and crimping and connecting the wire tip and the crimp terminal,
A crimping shape formed by caulking a predetermined range in the longitudinal direction of the covering crimping portion is a first crimping shape, and a crimping shape different from the first crimping shape is formed by caulking the other range. Shape and
A pressing surface that presses the coated crimping portion of the set of terminal crimping members,
A first pressing portion corresponding to the first pressure bonding shape and a second pressing portion corresponding to the second pressure bonding shape,
A terminal crimping member in which the first pressing portion and the second pressing portion on the pressing surface are configured in different shapes. The pressing surface in the set of terminal crimping members,
A configuration in which the second pressing portion is disposed between the first pressing portions spaced apart by a predetermined distance along the longitudinal direction,
In the second pressing part on the pressing surface,
The terminal crimping member according to claim 19, further comprising at least one protrusion that protrudes inward in the radial direction and is formed along a circumferential direction of the pressing surface. A plurality of protrusions in the set of terminal crimping members are formed at predetermined intervals in the longitudinal direction,
A groove portion configured in a substantially concave shape between the plurality of protrusions,
The terminal crimping member according to claim 20, wherein the terminal crimping member is formed with a depth in the radial direction lower than a height in the radial direction of the protrusion. The pressing surface in the set of terminal crimping members,
The boundary position of the first pressing portion and the boundary position of the second pressing portion in the set of terminal crimping members are configured in different shapes in the circumferential direction of the pressing surface. The terminal crimping member as described in any one. In the pressing surface corresponding to the vicinity of the tip on the wire tip end side in the covering crimp portion,
23. The method according to claim 19, further comprising an inclined portion that gradually increases the inner diameter from the wire tip end side toward the insulating coating side in the longitudinal direction and presses the vicinity of the tip end of the insulating coating. The terminal crimping member according to one. The terminal crimping member,
Consists of a plurality of crimping members divided in the longitudinal direction corresponding to the crimping shape of the crimping part,
While providing a locking portion on one of the opposing surfaces facing the longitudinal direction of the crimping member, while providing a locked portion to lock the locking portion on the other surface,
24. At least one of the shape and position of the erroneously locking prevention structure including the locking portion and the locked portion is different between the plurality of crimping members. The terminal crimping member described in 1. The connection structure which connected the said covered electric wire and the said crimp terminal by the terminal crimping member as described in any one of Claims 19-24. The connector which has arrange | positioned the said crimp terminal in the connection structure as described in any one of Claim 14, 18 and 25 in the connector housing. A wire harness in which a plurality of connection structures according to any one of claims 14, 18, and 25 are bundled, and crimp terminals in the connection structures are mounted in a connector housing.

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