JP2013054974A - Terminal crimping machine, crimper type blade for terminal crimping, electric wire with terminal, and device for manufacturing electric wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend a life of a crimper type blade.SOLUTION: In a terminal crimping machine 30 of an electric wire connection terminal 1 crimping and fixing a conductive core material S of an electric wire E between wire standing pieces 4a and 4b, an anvil type blade 31 supporting the electric wire connection terminal 1, and a crimper type blade 32 pressing the electric wire connection terminal 1 to the anvil type blade 31 are arranged. A guide groove 34 for accessing the electric wire connection terminal 1 and the anvil type blade 31 comprises guide inner walls 35a and 35b guiding the electric wire connection terminal 1 and the anvil type blade 31 to a deep part of the groove, arch groove bottoms 36a and 36b caulking the wire standing pieces 4a and 4b, and chamfering parts 38a and 38b along a ridge line of the arch groove bottoms 36a and 36b, the groove inner walls 35a and 35b, and a blade surface 37 of the crimper type blade 32. Lateral width W1 of the chamfering parts 38a and 38b is larger than lateral width W2 of the arch groove bottoms 36a and 36b.

Description

  The present invention mainly includes a terminal crimping machine for connecting a wire to a conductive member such as an electrode plate of a battery or a distribution board, a crimper type blade for terminal crimping, and these terminal crimping machine and crimper type for terminal crimping. The present invention relates to an electric wire with a terminal obtained by crimping and fixing a conductive core material of an electric wire to an electric wire connection terminal by using a blade, and an apparatus for manufacturing the electric wire with terminal.

Conventionally, as a power source for various memory backups such as electronic devices, conductive members composed of extremely thin metal plates such as cylindrical, button-shaped, coin-shaped battery electrode plates and integrated circuit terminal pieces have been widely used. Such a conductive member is connected to a terminal to which an end of the electric wire is attached by a method such as spot welding (resistance welding) or laser welding.
The connection terminal connects a connection portion (welded portion) connected to a portion projecting upward of a sealing plate that is sealed to the opening of the battery case via a gasket, an attachment portion for attaching a lead wire, and these. It is comprised by the connection part (refer patent document 1).

Further, a terminal crimping device that crimps and connects a terminal fitting inserted into a cavity of a connector housing and an electric wire is known (Patent Document 2).
This terminal crimping device includes a pair of wire crimping pieces of a terminal fitting and a crimper on a pressing side and a pedestal side anvil for crimping and connecting the wires, and a guide through which the anvil enters the crimper. A groove is provided, and the guide groove has a tapered inner side surface and a caulking portion on both sides, and the caulking portion is formed at a pair of arch portions and an intersecting ridge line portion of the pair of arch portions. And a protruding portion.

JP 2010-123363 A JP 2003-59612 A

However, in the conventional terminal crimping device, the chamfered portion is provided between the arch portion and the inner side surface without providing the chamfered portion on the pair of arch portions and without providing the chamfered portion on the tapered inner side surface. Lymph is used up to the intersection point, and when crimping the wire crimping piece with such a crimper, the surplus part corresponding to the front and rear ends of the wire crimping piece is connected to the inner surface and chamfered portion of the guide groove of the crimper. It is restrained and loses the escape, and the force and impact applied to the wire crimping piece below from the crimper also loses the escape.
Accordingly, the force applied to the wire crimping piece and the reaction force against the impact all bounce back to the crimper, and a large force is transmitted to the crimper each time the terminal fitting is crimped and connected.

Thus, a crimper having no reaction force escape has a problem that it easily cracks and has a short life.
Furthermore, since the excess portion of the wire crimping piece that has lost the escape space is heated by high pressure, it causes problems such as seizure between the crimper and the terminal fitting that have become hot. The oil for preventing seizure must be applied between the crimper and the terminal fitting, and the cost is increased by the amount of the oil, or the application process is increased and the work efficiency is lowered.

In addition, the following disadvantages also occur in the terminal fitting to be crimped.
The surplus part of the wire crimping piece also has no escape, naturally stressing the wire crimping piece itself, and further stress concentrates on the part of the wire crimping piece that contacts the crimper. Cracks, cracks, and terminal fitting distortion occur in the crimped wire crimping piece.
When the crimping force is reduced in order to prevent the crimper and the wire crimping piece from cracking as described above, the crimping condition of the wire crimping piece is reduced, and the electric wire is easily removed from the terminal fitting.

Therefore, in view of such a point, the terminal crimping machine, the terminal crimping crimper blade and the terminal-attached electric wire manufacturing apparatus according to the present invention are configured such that the chamfered portion includes the groove inner wall of the guide groove and the blade surface of the crimper blade. The width of the chamfered part is wider than the left and right width of the arch groove bottom to disperse the force applied to the crimper blade during crimping and prevent cracking and heat generation of the crimper blade. An object of the present invention is to provide a terminal-attached wire manufacturing apparatus, a terminal crimping machine, and a crimping blade for terminal crimping that realize long life and low cost and suppress cracking and cracking by suppressing stress concentration in the standing piece.
Moreover, the electric wire with a terminal which concerns on this invention makes the right-and-left width | variety of a bell mouth wider than the right-and-left width | variety of the front-and-rear middle part in the crimping-fixed wire standup piece in view of the point mentioned above, at the time of crimping fixation of an electric wire. An object of the present invention is to provide a terminal-attached electric wire in which the tensile strength of the electric wire is improved at the same time as preventing the wire upright piece from being cracked or cracked by dispersing the stress on the wire upright piece.

In order to achieve the above object, the present invention employs the following technical means.
In the terminal crimping machine according to the present invention, first, the terminal crimping of the electric wire connecting terminal 1 is performed such that the conductive core S of the electric wire E is crimped and fixed between the pair of left and right wire upright pieces 4a and 4b and connected to the conductive member B. Machine,
An anvil blade 31 that supports the electric wire connection terminal 1, and a crimper blade 32 that presses the electric wire connection terminal 1 along the vertical direction to the anvil blade 31;
The crimper type blade 32 is formed with a guide groove 34 for allowing the wire connecting terminal 1 and the anvil type blade 31 supporting the wire connecting terminal 1 to enter and exit along the pressing direction.
The guide groove 34 is located at the back of the groove between the pair of left and right groove inner walls 35a and 35b for guiding the wire connection terminal 1 and the anvil blade 31 to the groove depth, and between the groove inner walls 35a and 35b, and the wire connection. A pair of left and right arch groove bottoms 36a and 36b depressed so as to press and crimp a pair of left and right wire upright pieces 4a and 4b of the terminal 1, and a pair of left and right arch groove bottoms 36a and 36b and a crimper type blade A pair of left and right chamfered portions 38a and 38b along a ridge line with the blade surface 37 in the front-rear direction in 32,
These chamfered portions 38a and 38b extend to the ridgeline between the groove inner walls 35a and 35b of the guide groove 34 and the blade surface 37 of the crimper blade 32,
The left-right width W1 of the pair of left and right chamfered portions 38a, 38b is wider than the left-right width W2 of the pair of left and right arch groove bottoms 36a, 36b.

Secondly, the anvil blade 31 is provided with a wire support 39 that supports the pair of left and right wire upright pieces 4a and 4b of the wire connection terminal 1 from below,
The crimper blade 32 is close to the wire connection terminal 1 and the anvil blade 31 from above, and is a crimping position U where the conductive core material S of the wire E is crimped and fixed between the pair of left and right wire upright pieces 4a and 4b. The lower end G1 of the chamfered portions 38a and 38b is located below the upper end G2 of the wire support portion 39 of the anvil blade 31 that has entered the guide groove 34.

Thirdly, the anvil blade 31 is provided with a wire support portion 39 that supports the pair of left and right wire upright pieces 4a and 4b of the wire connection terminal 1 from below.
The crimper type blade 32 approaches the wire connection terminal 1 and the anvil type blade 31 from above and moves the anvil type blade 31 so that the lower end G1 of the chamfered portions 38a and 38b is lower than the upper end G2 of the wire support portion 39. The guide groove 34 is formed with a groove width W3 that enters the groove deeply.

With these features, a pair of left and right chamfered portions 38a and 38b along the ridge line between the arch groove bottoms 36a and 36b and the blade surface 37 of the crimper type blade 32 are extended to the groove inner walls 35a and 35b. The left and right width W1 of the catch portions 38a and 38b (the distance from the left end of the left chamfer portion 38a to the right end of the right chamfer portion 38b) is the left and right width W2 of the pair of left and right arch groove bottoms 36a and 36b (the left end of the left arch groove bottom 36a). The distance between the right arch groove bottom 36b and the right end of the right arch groove bottom 36b is larger than that of the right arch groove bottom 36b. A gap d is formed between the left and right chamfered portions 38a and 38b on the left and right outer sides of the wire upright pieces 4a and 4b.
The gap d is pushed by the crimper type blade 32 and the surplus portion A generated at the ends in the front-rear direction of the wire upright pieces 4a, 4b is directed to the side opposite to the crimper type blade 32 side (anvil type blade 31 side). At the same time, the force and impact applied from the crimper type blade 32 to the wire upright pieces 4a and 4b can be released to the anvil type blade 31 side together with the surplus portion A through the gap d.

Therefore, among the force applied to the wire upright pieces 4a and 4b and the force (reaction force) generated by the impact, the reaction force rebounding to the crimper blade 32 can be reduced, and the reaction force reduction for each press is small. When they are pressed tens of thousands of times and hundreds of thousands of times, they are piled up and make a big difference.
As a result, accumulation of metal fatigue, damage to the internal structure, and the like on the crimper-type blade 32 can be suppressed, and cracking of the crimper-type blade 32 can be prevented and the life can be extended.

If the surplus portion A is allowed to escape from the left and right outer sides of the wire upright pieces 4a and 4b to the anvil blade 31 side, the pressure applied to the surplus portion A is naturally reduced and heat generation can be suppressed, thereby preventing seizure. Since the oil to be applied can be reduced or eliminated, the oil cost can be reduced and the working efficiency can be improved.
Furthermore, stress concentration applied to the wire standing pieces 4a and 4b to be crimped can be prevented, that is, the stress can be distributed to the anvil blade 31 side through the gap d together with the surplus portion A. Cracks, cracks and distortions in the pieces 4a and 4b can be suppressed.

By such stress dispersion, the pressing force that can be endured as a whole of the wire upright pieces 4a and 4b is increased, and the wire upright pieces 4a and 4b can be caulked with a stronger force. Increases tensile strength.
Further, when the crimper type blade 32 approaching the electric wire connecting terminal 1 and the anvil type blade 31 from above is in the caulking position U where the conducting core material S is crimped and fixed between the wire upright pieces 4a and 4b, Since the lower end G1 is positioned below the upper end G2 of the wire support portion 39 of the anvil blade 31, the left and right outer gaps 4a, 4b of the pair of left and right wire upright pieces 4a, 4b are separated from each other by the wire upright piece 4a, The reaction force generated in the surplus portion A can be further reduced by the extent that the gap d extends to a position below 4b.

Furthermore, as shown in FIG. 12A, when there is a space C below the left and right outer sides of the wire upright pieces 4a and 4b, the space C and the gap d communicate with each other.
This is because the surplus portion A and the reaction force generated by the pressing of the crimper blade 32 pass through the gap d between the wire upright pieces 4a and 4b and the chamfered portions 38a and 38b, and the wire upright pieces 4a and 4b. This means that it can go down to the bottom, more reliably reduce the reaction force to the crimper blade 32, disperse the stress of the wire upright pieces 4a and 4b, prevent seizure, and improve the tensile strength of the electric wire E. .

Then, the guide groove 34 is formed with a groove width W3 that allows the anvil blade 31 to enter the groove depth from the lower end G1 of the chamfered portion 38 to a position below the upper end G2 of the wire support portion 39. The gap d on the left and right outside of the wire upright pieces 4a and 4b can be extended to the lower side of the wire upright pieces 4a and 4b even when the wire connection terminal 1 is crimped, and is generated by pressing the crimper blade 32. It is possible to further escape the surplus part A and reaction force (relieved force F ′).
The groove width W3 of the guide groove 34 is a groove width in the pair of left and right chamfered portions 38a and 38b. More specifically, the length from the lower end G1 of the left chamfered portion 38a to the lower end G1 of the right chamfered portion 38b. It becomes. Also, “the guide groove 34 is formed with a groove width W3 that allows the anvil blade 31 to enter the groove deeply so that the lower end G1 of the chamfered portion 38 is below the upper end G2 of the wire support portion 39”. Means that the groove width W3 is larger than the length W6 from the upper left end G2 to the upper right end G2 of the wire support portion 39 of the anvil blade 31.

The crimper blade for terminal crimping according to the present invention firstly includes an electric wire connecting terminal 1 for connecting the conductive core material S of the electric wire E to the conductive member B by crimping and fixing between the pair of left and right wire upright pieces 4a and 4b. A crimper type blade for terminal crimping,
A guide groove that presses the wire connection terminal 1 along the vertical direction with the anvil blade 31 that supports the wire connection terminal 1 and allows the wire connection terminal 1 and the anvil blade 31 to enter and exit along the pressing direction. 34 is formed,
The guide groove 34 is located at the back of the groove between the pair of left and right groove inner walls 35a and 35b for guiding the wire connection terminal 1 and the anvil blade 31 to the groove depth, and between the groove inner walls 35a and 35b, and the wire connection. A pair of left and right arch groove bottoms 36a and 36b which are depressed so as to press and crimp the pair of left and right wire upright pieces 4a and 4b of the terminal 1, and the pair of left and right arch groove bottoms 36a and 36b and the front and rear direction A pair of left and right chamfered portions 38a and 38b along a ridge line with the blade surface 37,
These chamfered portions 38a, 38b extend to the ridgeline between the groove inner walls 35a, 35b of the guide groove 34 and the blade surface 37,
The left-right width W1 of the pair of left and right chamfered portions 38a, 38b is wider than the left-right width W2 of the pair of left and right arch groove bottoms 36a, 36b.

  Second, the wire connection terminal 1 and the anvil blade 31 are approached from above, and the lower ends G1 of the chamfered portions 38a and 38b are located below the lower ends G3 of the arch groove bottoms 36a and 36b. And

  Third, the chamfered surfaces 40 of the chamfered portions 38a and 38b are continuous with the bottom surfaces 41 of the arch groove bottoms 36a and 36b via a curved surface R '.

By these features, the left and right widths W1 of the chamfered portions 38a and 38b formed along the ridge lines between the arch groove bottoms 36a and 36b and the groove inner walls 35a and 35b and the blade surface 37 are set to the left and right of the arch groove bottoms 36a and 36b. By making the width wider than the width W2, the force applied to the crimper blade 32 and the wire upright pieces 4a and 4b through the gap d formed on the left and right outer sides of the wire upright pieces 4a and 4b is released (the released force F '), Prevention of cracking in the crimper-type blade 32, prolongation of life, prevention of seizure, suppression of cracking, cracking and distortion in the wire standing pieces 4a and 4b, and improvement of the tensile strength of the electric wire E can be realized.
In addition, by positioning the lower end G1 of the chamfered portion 38 below the lower end G3 of the arch groove bottom 36, the gap d can be extended further downward, and more force can be released from the gap d. The chamfered surface 40 of the chamfered portion 38 is made continuous with the bottom surface 41 of the arch groove bottom 36 via the curved surface R ′, thereby forming the front and rear ends of the crimped wire upright pieces 4a and 4b. The rise of the bell mouth 11 can be made gentle, and the stress concentration can be further suppressed.

The electric wire with a terminal according to the present invention is, firstly, an electric wire with a terminal having an electric wire E and an electric wire connecting terminal 1 for connecting the conductive core material S of the electric wire E to the conductive member B,
A terminal body 2 formed by processing and molding a metal plate K composed of nickel at least on both front and back surfaces, a welded portion 3 formed at the front end of the terminal body 2 and welded to the conductive member B, and the terminal body 2 A pair of left and right wire upright pieces 4a and 4b formed in the middle part in the front-rear direction are provided,
Between the pair of left and right wire upright pieces 4a and 4b, which are pressed and crimped by the crimper type blade 32 approaching the anvil type blade 31 supporting the pair of left and right wire upright pieces 4a and 4b, the electric wire E The conductive core material S is crimped and fixed,
A bell mouth 11 is formed at the ends in the front-rear direction of the pair of left and right wire upright pieces 4a, 4b that are fixed by crimping.
The left and right width W4 of the bell mouth 11 is characterized by being wider than the left and right width W5 of the middle part in the front-rear direction of the pair of left and right wire upright pieces 4a and 4b fixed by pressure bonding.

  Second, the length L of the pair of left and right wire upright pieces 4a and 4b is equal to the thickness t of the crimper blade 32.

Third, the surface of the terminal body 2 is divided into a pressing part 42 formed by pressing the crimper blade 32 and a non-pressing part 43 having a surface roughness Ra larger than the pressing part 42.
The wire upright pieces 4a and 4b are characterized in that the pressing portion 42 is provided in the middle of the front and rear direction of the wire upright pieces 4a and 4b and on the surface of the bell mouth 11.

  Fourth, the wire upright pieces 4a and 4b crimped in a curved shape are characterized in that an arc portion 10 is formed at an end portion in the front-rear direction at the end in the upright direction.

Due to these characteristics, a welded portion 3 to be welded to the conductive member B is formed at the front end portion of the terminal body 2, and the conductive core material S of the electric wire E is crimped and fixed to the middle portion of the terminal body 2 in the front-rear direction. A pair of wire upright pieces 4a and 4b are formed, and the left and right width W4 of the bell mouth 11 formed at the ends of the wire upright pieces 4a and 4b in the front-rear direction is shown in the middle of the wire upright pieces 4a and 4b in the front-rear direction. Even if the pair of left and right wire upright pieces 4a and 4b are crimped in a curved shape by the pressing of the crimper type blade 32 approaching the anvil type blade 31, it is equivalent to the bell mouth 11 The surplus portion A at the end portions in the front-rear direction of the wire upright pieces 4a and 4b to be released will be released not only in the vertical direction but also in the left and right outer directions, compared with the case where the surplus portion A is not escaped in the left and right outer directions. Wai Standing piece 4a, the stress applied to 4b also curved wire erected pieces 4a, are distributed along the 4b end, the wire standing pieces 4a, 4b of the cracking and cracks, distortion can be prevented.
In addition, this invention is the electric wire E 'with the electric wire connection terminal 1 which has the welding part 3 welded to the electrically-conductive member B to the last, Comprising: It inserts in the cavity of a connector housing which does not have such a welding part 3. Application scenes and technical ideas differ from terminal fittings.

Further, by setting the length L of the wire upright pieces 4a and 4b to the same value as the thickness t of the crimper type blade 32, when the wire upright pieces 4a and 4b are pressed by the crimper type blade 32, An end portion in the front-rear direction (a portion corresponding to the surplus portion A) hits a portion (the chamfered portion 38a, 38b) forming the bell mouth 11 in the crimper-type blade 32 and escapes to the left and right, and the surplus portion A The stress concentration of the wire upright pieces 4a and 4b can be prevented by the amount of escape.
That is, the stress distribution of the wire upright pieces 4a and 4b is performed to suppress cracks, cracks, and distortion, and at the same time, even in the case of an electric wire connection terminal processed and formed from the same metal plate K, it is better to disperse the stress. The pressing force which can be endured as a whole of the pieces 4a and 4b is increased, and the wire upright pieces 4a and 4b can be crimped with a stronger force, so that the tensile strength of the wire E with respect to the wire connection terminal 1 can be improved.

The “same” in the present invention includes “substantially the same” value, length, etc., as well as “substantially the same”, which is substantially the same value, length, etc.
This “substantially the same” means that, in the present invention, for example, if the surplus portion A hits the chamfered portions 38a, 38b of the crimper type blade 32 and can escape to the left and right, even if the values are slightly different, That can be regarded as the same value.

The surface of the terminal body 2 is divided into a pressing portion 42 and a non-pressing portion 43, and the pressing portion 42 is provided not only in the front-rear direction of the wire upright pieces 4a and 4b but also on the surface of the bell mouth 11. Thus, the bell mouth 11 is formed by hitting the portion (the chamfered portions 38a, 38b) forming the bell mouth 11 in the crimper type blade 32, and crimping the wire upright pieces 4a, 4b and bell mouth. The pressing force F applied when forming the wire 11 is received by the wire rising pieces 4a and 4b and the entire pressing portion 42 of the bell mouth 11, and the stress generated in the wire rising pieces 4a and 4b is dispersed.
The stress dispersion as in the present invention has a higher degree of stress dispersion than, for example, the stress dispersion in the case where there is no pressed portion on the surface of the bell mouth.

When there is no pressing portion on the surface of the bell mouth 11, that is, when the surplus portion A corresponding to the bell mouth 11 protrudes from the front and rear direction of the pressing crimper blade 32, the crimper blade 32 is provided. The stress is concentrated at the boundary between the pressed portion and the bell mouth 11 generated without being pressed.
And if the circular arc part 10 is formed in the front-and-rear end part in the standing front-end | tip of the wire standing piece 4a, 4b crimped in curved shape, when the wire standing piece 4a, 4b is crimped and the standing-up front ends match, the arc part 10 and the surplus portion A is released to the left and right outwards by the amount of the arc portion 10, and further stress distribution can be achieved.

Moreover, the manufacturing apparatus of the electric wire with a terminal which concerns on this invention connects the electric wire E and the conduction | electrical_connection core material S of this electric wire E by crimping between the left-right paired wire upright pieces 4a and 4b, and connects with the electrically-conductive member B. An apparatus for manufacturing an electric wire with a terminal having a terminal 1,
An anvil blade 31 that supports the electric wire connection terminal 1, a crimper blade 32 that presses the electric wire connection terminal 1 along the vertical direction against the anvil blade 31, and presses the crimper blade 32 against the electric wire connection terminal 1. Pressing means 33 to be provided,
The crimper type blade 32 is formed with a guide groove 34 for allowing the wire connection terminal 1 and the anvil type blade 31 supporting the wire connection terminal 1 to enter and exit along the pressing direction.
The guide groove 34 is located at the back of the groove between the pair of left and right groove inner walls 35a and 35b for guiding the wire connection terminal 1 and the anvil blade 31 to the groove depth, and between the groove inner walls 35a and 35b, and the wire connection. A pair of left and right arch groove bottoms 36a and 36b depressed so as to press and crimp a pair of left and right wire upright pieces 4a and 4b of the terminal 1, and a pair of left and right arch groove bottoms 36a and 36b and a crimper type blade A pair of left and right chamfered portions 38a and 38b along a ridge line with the blade surface 37 in the front-rear direction in 32,
These chamfered portions 38a and 38b extend to the ridgeline between the groove inner walls 35a and 35b of the guide groove 34 and the blade surface 37 of the crimper blade 32,
The left-right width W1 of the pair of left and right chamfered portions 38a, 38b is wider than the left-right width W2 of the pair of left and right arch groove bottoms 36a, 36b.

According to the terminal crimping machine, the terminal crimping crimper blade and the terminal-attached electric wire manufacturing apparatus according to the present invention, the arch groove bottom and the chamfered portion along the ridge line between the groove inner wall and the crimper blade edge surface, By making the left and right width of the chamfered portion wider than the left and right width of the arch groove bottom, the life of the crimper blade can be extended.
Moreover, according to the electric wire with a terminal according to the present invention, by making the left and right width of the bell mouth wider than the left and right width of the middle part of the front and rear of the wire standing piece fixed by crimping, it is possible to prevent the wire standing piece from being cracked or cracked. I can do it.

It is a top view which shows the electric wire connection terminal and carrier of an electric wire with a terminal concerning the present invention. It is a side view which shows an electric wire connection terminal and a carrier. (A) is an AA arrow directional view of FIG. 1, (b) is a BB arrow directional view of FIG. It is a top view which shows the electric wire connection terminal which crimped and fixed the electric wire. It is a perspective view which shows the electric wire with a terminal which connected the electric wire and the electrically-conductive member (dry battery). BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the manufacturing apparatus of the electric wire with a terminal which concerns on this invention, (a) shows a fully automatic manufacturing apparatus, (b) is a manual manufacturing apparatus. It is a perspective view which shows the terminal crimping machine which concerns on this invention. It is side surface sectional drawing which shows a terminal crimping machine. It is a perspective view which shows the crimping tool (anvil type blade, wire crimper type blade) of a terminal crimping machine. (A) is a perspective view which shows an anvil type blade, (b) is a front view which shows an anvil type blade, (c) is a side view which shows an anvil type blade. (A) is a perspective view which shows the crimper type blade which concerns on this invention, (b) is a front view which shows a crimper type blade, (c) is CC sectional view taken on line CC of (a). . (A) is a front view which shows the anvil type blade in a crimping position, a crimper type blade, and an electric wire connection terminal, (b) is DD sectional view taken on the line of (a). It is side surface sectional drawing which showed the crimping | compression-bonding 1st process. (A) is side surface sectional drawing which showed the crimping | compression-bonding 2nd process, (b) is an enlarged view of the side surface cross section showing the electric wire connection terminal, the anvil type blade, and the slide cutter. It is side surface sectional drawing which showed the crimping | compression-bonding 3rd process. It is side surface sectional drawing which showed the crimping | compression-bonding 4th process. It is side surface sectional drawing which showed the crimping | compression-bonding 5th process.

Hereinafter, a terminal crimping machine 30 for a wire connection terminal 1 according to the present invention, a crimper-type blade 32 for terminal crimping, an electric wire E ′ with a terminal, and a manufacturing apparatus 100 that manufactures the electric wire E ′ with a terminal, based on the drawings. An embodiment will be described.
The terminal-equipped electric wire E ′ manufacturing apparatus 100 is equipped with a terminal crimping machine 30 that crimps and fixes the wire connection terminal 1 to the electric wire E. The terminal crimping machine 30 is also called an applicator, and has a desired length of the electric wire E. The wire connection terminal 1 is fixed by crimping to the conductive core S exposed at the end of the wire, and the wire connection terminal 1 is electrically connected to the end of the wire E.

For the applicator 30, a side feed applicator or the like that supplies a terminal band 21 'in which a large number of wire connection terminals 1 are connected in parallel to the carrier 21 from the side of the manufacturing apparatus 100 for the terminal-attached wire E'. There are types.
The applicator 30 itself has a mechanism for feeding the terminal strip 21 ′, which is a material, and performs caulking processing. Therefore, the applicator 30 is manufactured according to the shape and size of the wire connection terminal 1, the size of the wire E, and the like. The

Accordingly, first, the wire connection terminal 1, the wire E, and the terminal band 21 'in which the wire connection terminal 1 is connected to the carrier 21 in parallel will be described.
As shown in FIGS. 1 to 5, the electric wire connecting terminal 1 connects the electric wire E in which the conductive core material S (conductor portion W) is covered with the covering portion Z to the conductive member B such as a dry cell or a button cell. Terminal.

The conductor part W of the electric wire E connected to the electric wire connection terminal 1 is formed by twisting a plurality of conductive cores S made of conductive metal such as copper wire, tinned annealed copper wire, or the like. The conductive core material S is composed of the conductive core material S.
The covering portion Z of the electric wire E is an insulator whose material is electron beam cross-linked polyolefin, flame retardant cross-linked polyolefin, or the like, and uniformly covers the conductor portion W with a predetermined thickness.

As shown in FIG. 1, each wire connection terminal 1 (terminal body 2) is connected in a chain shape (chain shape) by a long band-shaped carrier 21 made of a metal plate K. 21 will be rolled up and conveyed together with each wire connection terminal 1.
The carrier 21 is connected to the rear end of the terminal main body 2 (the cover crimping portion 7) and the carrier connecting portion 22, and in the vicinity of the base end portion of the carrier connecting portion 22, a pilot hole on the front-rear axis X of the terminal main body 2. (Carrier hole) 23 is formed.

The metal plate K constituting each terminal body 2 and the carrier 21 is a pure nickel metal plate, a nickel-plated iron plate, or a nickel-plated stainless steel plate. The pure nickel metal plate is composed of nickel with high conductivity and corrosion resistance, not only on the front and back sides, but also inside. The nickel-plated stainless steel plate is made of a stainless steel plate such as SUS304, SUS316, etc. Nickel plating is applied to both front and back surfaces to improve corrosion resistance and conductivity.
Note that the above-described nickel, SUS304, and the like are harder than materials such as brass (brass) and phosphor bronze used for conventional connection terminals, and therefore, a crimp fitting (a wire crimper blade 32 described later) for crimping the terminal body 2. Etc.) requires more durability.

Specifically, the nickel used for the wire connection terminal 1 of the present invention has a Vickers hardness (JIS-G-0202, hereinafter referred to as HV) of 638, a diamond cone having a tip radius of 0.2 mm and a tip angle of 120 degrees. Is converted to Rockwell hardness (JIS-G-0202, hereinafter referred to as HRC) to apply a force of 150 kgf.
In addition, SUS304 and SUS316, which are the core materials of nickel-plated stainless steel plates, have an HV of 180 or more and 300 or less, and 6 to 30 when converted to HRC. Then, the HV of the plating is 500 or more and 800 or less, and the HRC is 49 or more and 64 or less. Even when electrolytic nickel plating is performed using a watt bath, a sulfamic acid bath or the like, the HV of the plating is close to 500, and about 49 in HRC.

That is, the material of the electric wire connection terminal 1 has high hardness or ultra high hardness.
On the other hand, the HV of brass used for conventional connection terminals is 85 or more and 145 or less, and is less than 0 when converted to HRC. Moreover, HV of phosphor bronze is 125 or more and 170 or less, and HRC is 0 or more and 4 or less.

Therefore, the conventional connection terminal is made of a low-hardness material. However, as in the present invention, in order to crimp and fix the electric wire E with the metal plate K having high hardness, the crimping tool (wire crimper type blade 32 is used. Etc.) also requires very high hardness of 52 or more in HRC, preferably 60 to 70 in HRC, wear resistance, hardness maintenance at high temperature, softening resistance, and toughness.
In addition, since the metal plate K having high hardness as described above is processed and molded, the battery B has strength as a terminal while ensuring the conductivity between the electric wire E and the conductive member B (battery or the like). Even if the electric wire E is pulled after the welding, a bending stress acts and the terminal body 2 is not easily bent.

As shown in FIG. 2, the terminal main body 2 is formed at the front end of the terminal main body 2 and welded to the conductive member B, and is formed at the intermediate portion in the front-rear direction of the terminal main body 2. A conductor crimping part 5 for crimping and fixing the conductive core S exposed by peeling off the covering part Z at the E end between the pair of left and right wire upright pieces 4a, 4b, and a rear end part of the terminal body 2; A covering crimping portion 7 for crimping and fixing a non-peeling portion of the covering portion Z of the electric wire E between the pair of left and right insulation upright pieces 6a and 6b, and a terminal so as to connect the covering crimping portion 7 and the conductor crimping portion 5 And a connecting portion 8 formed in the main body 2.
The welded portion 3 has a flat plate shape (tab shape), and is a connection between a circular portion formed into a circular shape in plan view and a conductor crimping portion 5 formed into a narrow neck shape narrower than the left and right widths of the circular portion. And have a part.

The diameter of the circular portion of the welded portion 3 may be a size that does not short-circuit when welded to the conductive member B, such as, for example, substantially the same diameter as the positive electrode B1 of the AA dry battery that is the conductive member B. 3 is welded to the electrode of the battery B by spot welding.
Therefore, the electric wire connection terminal 1 according to the present invention is an electric wire E ′ with the electric wire connection terminal 1 having the welded portion 3 welded to the conductive member B such as a dry battery.

As shown in FIGS. 3A and 3B, the pair of left and right wire upright pieces 4a and 4b and the pair of left and right insulation upright pieces 6a and 6b rise from the bottom in an arc shape (substantially U-shaped), Furthermore, the left and right wire upright pieces 4a and 4b have serration convex portions 9 protruding upward in a bowl shape (side where the exposed conductor portion W is crimped) along the left and right direction (left and right axis Y) of the terminal body 2. ing.
When the wire upright pieces 4a and 4b are caulked, pressing stress acting on the electric wire E by the conductor crimping portion 5 is concentrated on the serration convex portion 9, and the unevenness of the shape meshed with the serration convex portion 9 is a conductor. Since it can be formed on the surface of the conductive core material S of the portion W, the electric wire E is firmly crimped to the conductor crimping portion 5 to the extent that it cannot be pulled out.

In addition to contributing to such mechanical connection, even if the serration convex portion 9 has an oxide on the surface of the conductive core material S, it can be crushed and destroyed. Reduction of the contact resistance mentioned above is promoted, and electrical connection can be ensured.
Further, the left and right wire upright pieces 4a and 4b have arc portions 10 formed on both the upper front end portion and the upper rear end portion (end portions in the front-rear direction at the front end of the wire upright pieces 4a and 4b). ing.

The arc portion 10 becomes a part of the surplus portion A that is generated when the conductor portion W of the electric wire E between the wire upright pieces 4a and 4b is crimped by the applicator 30 described above.
Such a surplus portion A occurs because the electric wire E is crushed and deformed to fill and block between the left and right wire upright pieces 4a and 4b, and the wire upright pieces 4a and 4b and the bottom of the conductor crimping portion 5 Between the front and rear end edges of the conductor crimping portion 5 is strongly crushed and recessed, and the front and rear end edges of the wire upright pieces 4a and 4b are crimped to the applicator 30 against the recess. This is because it relatively rises along the tool (specifically, chamfered portions 38a and 38b of the wire crimper type blade 32 described later).

In this way, the raised edge 11 in which the front and rear ends of the wire upright pieces 4a and 4b are raised and warped is widened as the opening in the front and rear direction opens first (bell-shaped), that is, outward in the front and rear direction. Is called bell mouth 11 (see FIGS. 4 and 5).
In addition, this bellmouth 11 forms the suitable bellmouth 11 by the crimping | fixing fixation mentioned later.

Next, the manufacturing apparatus 100 of the electric wire E ′ with terminals will be described.
As shown in FIGS. 6A and 6B, the manufacturing apparatus 100 is a fully automatic system that automatically performs everything from peeling of the covering portion Z at the end of the electric wire E to crimping and fixing of the electric wire connecting terminal 1 and discharging. There is a manual type in which the electric wire E from which the covering portion Z at the end has already been peeled is held by hand and set in the terminal crimping machine 30, and the electric wire connecting terminal 1 is fixed by crimping.
A fully automatic manufacturing apparatus 100 shown in FIG. 6A includes an electric wire feeding means 101, a clamping means 102, an electric wire cutting means 103, a peeling means 104, a terminal supply means 105, a terminal crimping machine 30 (applicator ), Pressing means 33 (press) and discharging means 106, which are arranged on the machine base 107.
The electric wire feeding means 101 sends out the electric wire E by a predetermined length, and the electric wire E is wound in a roll shape. The clamping means 102 grips the electric wire E sent out from the electric wire feeding means 101, and conveys the gripped electric wire E to the electric wire cutting means 103, the peeling means 104, and the applicator 30 (details will be described later).

The electric wire cutting means 103 cuts the electric wire E gripped by the clamp means 102 every predetermined length, and peels off the covering portion Z at the end of the electric wire E cut by the electric wire cutting means 103. It is the peeling means 104 that exposes the conductive core material S.
The wire connection terminal 1 supplied from the side at a predetermined length from the roll in which the terminal strip 21 ′ is wound from the terminal supply means 105 to the electric wire E from which the conductive core material S is exposed by the peeling means 104. It is the applicator 30 that crimps and fixes the press, and the press 33 moves the crimping tool (each crimper blade 32, 53) of the applicator 30 up and down.
The electric wire E ′, to which the electric wire connecting terminal 1 is crimped by the applicator 30, is discharged from the manufacturing apparatus 100 by the discharging means 106.
The fully automatic manufacturing apparatus 100 may be of a type in which the wire connection terminal 1 is not only crimp-fixed to one end of the electric wire E but also crimped to both ends.
On the other hand, FIG. 6 (b) shows the manual manufacturing apparatus 100. In a separate process, the wire E is cut to a predetermined length and the covering portion Z at the end is peeled off. The feeding means 101, the clamping means 102, the wire cutting means 103, the peeling means 104, and the discharging means 106 are not provided.

Then, the applicator which is the terminal crimping machine 30 is demonstrated.
As shown in FIGS. 7 and 8, the applicator 30 includes a base 51 that is a substrate on which each part is mounted, a holder column 52 that is a columnar structure standing on the base 51, and the holder column 52. An anvil blade 31 that is held and supports the electric wire connection terminal 1, a crimper blade 32 (wire crimper blade) that can be moved close to and away from the anvil blade 31 and crimps the wire upright pieces 4a and 4b in a curved shape, An incliner type blade 53 that is arranged adjacent to the wire crimper type blade 32 and caulks the insulation upright pieces 6a and 6b in a curved shape, and an electric wire from the carrier 21 in the terminal band 21 'arranged adjacent to the anvil type blade 31. A slide cutter 54 for cutting the connection terminal 1, a cut-off punch 55 for pushing down the slide cutter 54, the anvil blade 31 and each crimper blade 32, 53, and a terminal feed mechanism 56 that feeds the terminal band 21 'to the crimping position U that is crimped and fixed.
The applicator 30 is used together with the above-described clamping means 102 for supplying and positioning the electric wire E.

In the applicator 30, the direction in which the wire crimper blade 32 approaches and separates from the anvil blade 31 is the vertical direction, the direction in which the terminal feed mechanism 56 sends out the terminal band 21 ′ is the horizontal direction, and the anvil blade 31 The direction in which the slide cutter 54 is adjacent and the direction in which the wire crimper blade 32 and the incrimp blade 53 are adjacent are the front and rear directions (the wire crimper blade 32 is the front side, and the inscrimp blade 53 is the rear side).
The vertical direction of the applicator 30 is substantially the same as the vertical direction of the wire connection terminal 1 at the crimping position U, and the horizontal direction of the applicator 30 is substantially the same as the horizontal direction of the wire connection terminal 1 at the crimping position U. The front-rear direction of the applicator 30 is substantially the same as the front-rear direction of the wire connection terminal 1 at the crimping position U.

As shown in FIGS. 7 and 8, on the base 51, the anvil blade 31 is disposed and fixed at the lower rear of the holder column 52 via the anvil holder 57, and the slide cutter 54 is cut behind the anvil blade 31. It is arranged so as to be movable up and down with respect to the holder 58.
A shank 59 slidable in the vertical direction is attached to the rear surface of the holder column body 52, and the shank 59 is connected to the pressing means 33 (press) via the ram 60, and the shank 59 is moved up and down by the press 33. The

On the rear surface of the shank 59, a reformer 62 for attaching the wire connecting terminal 1 that is swaged up and down through the reformer guide 61 to be separated from the crimper blades 32 and 53 is attached. A spacer 63 having a predetermined thickness is provided behind the reformer 62. A wire crimper blade 32 is attached to the wire crimper blade 32, and an inscrimper blade 53 is attached to the rear surface of the wire crimper blade 32. 64 is attached, and a cut-off punch 55 that can press the slide cutter 54 downward is attached to the rear surface of the wire holding member 64 (see FIGS. 7 to 9).
Therefore, when the shank 59 is lifted and lowered through the ram 60 by the press 33, the reformer 62, the spacer 63, the wire crimper blade 32, the inscribder blade 53, the wire pressing member 64, The cut-off punch 55 is also raised and lowered.

The crimper blades 32 and 53 are attached to the front and rear positions facing the anvil blade 31 and above, and the cut-off punch 55 is attached to the front and rear positions facing the slide cutter 54 and above.
As shown in FIG. 10A, the anvil die blade 31 is a flat plate die made of metal, and has a substantially rectangular anvil base portion 65 in front view, and a center in the left-right direction on the upper surface of the anvil base portion 65. An anvil upper portion 66 that extends linearly upward is formed, and the anvil base portion 65 and the anvil upper portion 66 as a whole are formed in an inverted T shape when viewed from the front.

The anvil base 65 is provided with a screw hole 65a penetrating the center in the front-rear direction, and the anvil blade 31 is attached to the anvil holder 57 by fixing means such as a screw passing through the screw hole 65a.
A wire support portion 39 that supports the wire upright pieces 4a and 4b of the electric wire connection terminal 1 is formed on the upper front portion of the anvil upper portion 66, and a lateral groove 66a extending in the left-right direction is formed behind the wire support portion 39. An ins support portion 67 that supports the insulation upright pieces 6 a and 6 b of the wire connection terminal 1 is formed at the rear of the lateral groove 66 a and at the upper rear portion of the anvil upper portion 66.

On the upper surface of the wire support portion 39, there are formed a wire central groove 39a in which a curved dent extends in the front-rear direction, and wire convex portions 39b raised on both the left and right sides of the wire central groove 39a. The left and right widths of the wire support portion 39 combined with the wire protrusions 39b are substantially the same as the crimp wide W ′ that is the left and right width of the conductor crimping portion 5 in the wire connection terminal 1 after crimping.
In addition, the upper surface of each wire convex part 39b is flat form, Comprising: When the anvil type blade 31 is attached to the applicator 30, it is formed so that it may become substantially horizontal (FIG.10 (b)).

As shown in FIG. 10C, the front upper portion and the rear upper portion of the wire support portion 39 are chamfered (front chamfer 39c, rear chamfer 39d), and the upper end of the front chamfer 39c and the rear end of the rear chamfer 39d. Is approximately the same length as the longitudinal length L of the wire upright pieces 4a and 4b of the wire connection terminal 1.
Also on the upper surface of the inner support portion 67, there are formed an inner center groove 67a in which a curved recess extends in the front-rear direction, and an inner convex portion 67b raised on both left and right sides of the inner center groove 67a. The left and right widths of the inner support portions 67 combined with the inner convex portions 67b are substantially the same as the left and right widths of the cover crimping portions 7 in the wire connection terminals 1 after crimping.

Further, the upper surface of the inner convex portion 67b is also flat and is formed to be substantially horizontal when the anvil blade 31 is attached to the applicator 30.
Such an anvil blade 31 is configured to be able to support the wire connection terminal 1 to be crimped from below.

As shown in FIG. 11 (a), the wire crimper blade 32 is a flat plate blade, and its thickness t is substantially equal to the longitudinal length L of the wire upright pieces 4a, 4b of the wire connection terminal 1. Are the same.
Further, as described above, the wire crimper blade 32 is required to be a material having a very high hardness with a Rockwell hardness HRC of at least 52 or more, preferably 60 or more and 70 or less.

Such extremely hard materials include cemented carbide and high speed steel.
Cemented carbide is an alloy made by sintering a powder of hard metal carbide, and representatively, tungsten carbide (WC, tungsten carbide) and a binder (binder) cobalt (Co WC-Co alloy, WC-TiC-Co alloy, WC-TaC-Co alloy, and the like.
In order to further improve the friction resistance of the cemented carbide, another hard substance is coated on the surface of the wire crimper blade 32 where stress is particularly applied (the lower part of the wire crimper 69 described later and the periphery of the guide groove 34) ( Chemical vapor deposition (CVD) or physical vapor deposition (PVD)) may also be used. Examples of the hard substance include titanium nitride (TiN), titanium carbonitride (TiCN), and titanium aluminum nitride (TiAlN).

As the material of the wire crimper type blade 32, high speed steel is also preferable, which compensates for the low softening resistance at high temperature in the tool material and enables processing of the metal material at a higher speed. High-speed steel is made by adding a large amount of metal components such as chromium, tungsten, molybdenum, and vanadium to steel in order to increase hardness and softening resistance at high temperatures. After heat treatment such as quenching, it is molded by polishing. Used.
The types of high-speed steel include tungsten-based high-speed tool steel (SKH2-4, 10 in JIS-G-4403) and molybdenum-based high-speed tool steel (SKH40, 50-59 in JIS-G-4403). Etc.

Even when high-speed steel is used, high wear resistance such as titanium nitride (TiN) is partially applied to the surface by PVD method, especially in the vicinity of the guide groove 34 where stress is applied, similarly to the cemented carbide. A film may be formed.
The wire crimper type blade 32 has a wire crimper upper portion 68 that is substantially rectangular in a front view, and a wire crimper lower portion 69 that extends downward from the lower end of the wire crimper upper portion 68.
The wire crimper upper portion 68 is provided with a screw hole 68a penetrating the center in the front-rear direction, and a fixing means such as a screw passing through the screw hole 65a also passes through the spacer 63, the reformer 62, and the reformer guide 61 on the front side. The wire crimper type blade 32 is attached to the holder column body 52.

The wire crimper lower portion 69 has a guide groove 34 cut out upward from the lower end, and at least the vicinity of the guide groove 34 is subjected to high-speed carbide processing with a hardness of 60 degrees or more and 70 degrees or less. . The guide groove 34 is formed so that the electric wire connecting terminal 1 and the anvil blade 31 supporting the electric wire connecting terminal 1 can be moved in and out along the pressing direction (vertical direction) by the press 33.
The guide groove 34 includes a pair of left and right groove inner walls 35a and 35b, a pair of left and right arch groove bottoms 36a and 36b positioned in the groove between the groove inner walls 35a and 35b, and a pair of left and right arch groove bottoms 36a and 36b. And a pair of left and right chamfered portions 38a, 38b chamfered at the front and rear corners of the groove inner walls 35a, 35b.

The left and right groove inner walls 35a and 35b are formed in a divergent shape from the top (groove back side) to the bottom (groove opening side), and the groove width W3 of the guide groove 34 is gradually narrowed from the groove opening to the groove back, The wire connection terminal 1 and the anvil blade 31 can be guided to the back of the groove.
Also, the upper ends of the groove inner walls 35a, 35b and the lower ends G3 of the arch groove bottoms 36a, 36b so that the wire upright pieces 4a, 4b of the wire connection terminal 1 guided by the groove inner walls 35a, 35b are smoothly crimped. Is smoothly continuous.

The left and right arch groove bottoms 36a, 36b are continuous from the upper ends of the groove inner walls 35a, 35b, and are formed so that two semicircles having a central angle of about 180 degrees in the front view partially overlap at the center in the left-right direction. Yes.
Further, a central protrusion 36c protruding downward is formed along the ridge line between the left and right arch groove bottoms 36a and 36b. The lower end G4 of the central protrusion 36c is the lower end G3 of the left and right arch groove bottoms 36a and 36b. That is, it is located above the intersection G3 between the arch groove bottoms 36a and 36b and the groove inner walls 35a and 35b.

Each arch groove bottom 36a, 36b is curved upward and depressed so as to press and crimp the pair of left and right wire upright pieces 4a, 4b of the wire connection terminal 1. Depending on the value of the radius of curvature, the wire upright pieces The caulking radius, caulking height (crimp height), and caulking width (crimp wide W ′) of 4a and 4b are determined.
Accordingly, the crimp width W ′ and the left and right widths W2 of the left and right arch groove bottoms 36a and 36b are substantially the same.

The left and right chamfered portions 38a and 38b surround and mold the surplus portion A generated at the ends of the wire upright pieces 4a and 4b when the wire crimper type blade 32 presses the electric wire connecting terminal 1 to form a bell of a predetermined shape. A mouse 11 is formed.
The chamfered portions 38a and 38b are formed in an arc shape by chamfering the corners along the ridge line between the arch groove bottoms 36a and 36b and the groove inner walls 35a and 35b and the blade surface 37 of the wire crimper type blade 32 in the front-rear direction. ing.
That is, the left and right chamfered portions 38a and 38b do not stop at the lower end G3 of the arch groove bottoms 36a and 36b, but extend further below the lower end G3, and the groove inner walls 35a and 35b of the guide groove 34 and the wire crimper. It extends to a ridge line with the blade surface 37 of the mold blade 32.

As shown in FIG. 11B, the chamfered portions 38a and 38b are concentric with the semicircular arch groove bottoms 36a and 36b, that is, the arc centers of the chamfered portions 38a and 38b are arch grooves. It is comprised so that it may become substantially the same position as the circular arc center of the bottoms 36a and 36b.
In front view, the distance (radius difference Δr) between the arc formed by the upper edges of the chamfered portions 38a and 38b (boundary edge with the blade surface 37) and the arc formed by the arch groove bottoms 36a and 36b is as follows. From the vicinity of the central protrusion 36c to the left and right outer positions G5 of the lower ends G3 of the arch groove bottoms 36a and 36b, the predetermined value is substantially constant.

In addition, the chamfered portions 38a and 38b extend further downward from the left and right outer positions G5 to the groove inner walls 35a and 35b, and the boundary edges with the blade surface 37 that continues from the upper edges of the chamfered portions 38a and 38b. Is formed substantially directly below.
That is, the distance from the left outer position G5 of the left chamfered portion 38a to the right outer position G5 of the right chamfered portion 38b is the left and right width W1 of the pair of left and right chamfered portions 38a and 38b. The pair of arch groove bottoms 36a and 36b is wider than the left and right width W2 (the distance from the left lower end G3 of the left arch groove bottom 36a to the right lower end G3 of the right arch groove bottom 36b).

In front view, the distance between the boundary line between the chamfered portions 38a and 38b and the blade surface 37 and the groove inner walls 35a and 35b gradually decreases as going downward.
Further, as will be described in detail in the fourth step of crimping described later, as shown in FIG. 12A, when the wire crimper type blade 32 and the left and right wire standing pieces 4a and 4b of the wire connection terminal 1 are in the crimping position U. The chamfered portions 38a and 38b are formed so that the lower end G1 of the chamfered portion 38 of the wire crimper blade 32 is positioned below the upper end G2 of the wire support portion 39.

This is because the guide groove 34 of the wire crimper type blade 32 has a groove width W3 that allows the anvil type blade 31 to enter the depth of the groove from the lower end G1 of the chamfered portion 38 to a position below the upper end G2 of the wire support portion 39. Means that
Furthermore, this naturally represents that the lower ends G1 of the chamfered portions 38a and 38b of the wire crimper blade 32 are located below the lower ends G3 of the arch groove bottoms 36a and 36b.

Further, as shown in FIG. 11 (c), the chamfered surfaces 40 of the chamfered portions 38a and 38b may be continuous with the bottom surfaces 41 of the arch groove bottoms 36a and 36b via the curved surface R ′. As a result, the bell mouth 11 formed on the front and rear ends of the wire upright pieces 4a and 4b rises smoothly.
In this way, when the chamfered surface 40 of the chamfered portions 38a and 38b and the bottom surface 41 of the arch groove bottoms 36a and 36b are continuously made continuous, the chamfered portions 38a and 38b are cut or polished. After that, cutting and polishing will be performed again.

Like the wire crimper type blade 32, the incrimp type blade 53 is made of metal and is a flat plate type blade having a substantially rectangular shape when viewed from the front, and is provided with a screw hole 53a at the center.
A guide groove 70 through which the wire connection terminal 1 and the anvil blade 31 can enter and exit is also formed at the lower part of the inscrimp type blade 53, and the guide groove 70 also has a pair of left and right arch groove bottoms in the groove. Is provided.

As shown in FIG. 9, the slide cutter 54 is a wide, substantially rectangular parallelepiped member that is urged upward by a spring 54 a and is held by the cut holder 58 so as to be movable in the vertical direction. ing.
On the upper surface of the slide cutter 54, there are formed a groove 54b in which the electric wire E is placed during crimping and an abutment surface 54c against which a protrusion 55a protruding downward from the lower part of the cut-off punch 55 hits.

Further, a feed groove 54 d having a U-shaped cross section is provided on the front side (anvil blade 31 side) side surface of the slide cutter 54, and this feed groove 54 d is a terminal band fed from the terminal feed mechanism 56. Accept body 21 '.
The upper portion of the feed groove 54d is a cutting blade 54e, and the carrier connecting portion 22 in the terminal band 21 'is cut by the lower edge 54f of the cutting blade 54e, so that the wire connection terminal 1 (terminal) Disconnect the body 2).

Next, the clamp means 102 will be described.
As shown in FIG. 13, the clamp means 102 is disposed in front of the applicator 30, and accommodates a clamp 102a for holding the electric wire E, a cam mechanism for opening and closing the clamp, a cylinder for driving the cam mechanism, and the like. A clamp driving mechanism 102b, and a clamp conveyance table 102c for holding the clamp 102a and the clamp driving mechanism 102b.

The clamp 102a grips the electric wire E from which the conductive core material S is exposed by peeling off the end portion in a separate process.
The clamp 102a and the clamp drive mechanism 102b are attached to the transport table 102c so as to be movable up and down, and the electric wire E is transported into the applicator 30 by the clamp 102a for terminal crimping.

The electric wire E transported into the applicator 30 is lowered to the crimping position U before the electric wire connection terminal 1 is crimped. For the lowering of the electric wire E, the electric wire E is transferred to the press 33 that drives the applicator 30. Is provided with a push bar 33a for pushing the clamp 102a downward.
Next, the process of crimping the wire connection terminal 1 using the applicator 30 and the clamping means 102 in the manufacturing apparatus 100 will be described in detail.

The crimping process mainly includes the following five processes.
1st process: Between the anvil type blade 31 and each crimper type blades 32 and 53, the conduction | electrical_connection core material S and the coating | coated part Z which were exposed in the edge part of the electric wire E are sent.
Second step: The wire connection terminal 1 is positioned between the anvil blade 31 and the crimper blades 32 and 53.
Third step: The electric wire E is lowered to the crimping position U.
Fourth step: The crimper blades 32 and 53 and the cut-off punch 55 are lowered to crimp the wire connection terminal 1, and the wire connection terminal 1 is separated from the carrier 21.
5th process: While raising each crimper type | mold blades 32 and 53 and the cut-off punch 55, the electric wire E with the wire connection terminal 1 is sent out between between the anvil type blade 31 and each crimper type | mold blade 32,53.

<First step> (see FIG. 13)
As shown in FIG. 13, the electric wire E is fed into the applicator 30 by the clamp 102a.
At this time, the conductive core material S (conductor portion W) from which the covering portion Z is peeled off in the electric wire E is located between the wire support portion 39 of the anvil type blade 31 and the wire crimper type blade 32, and the end of the electric wire E The non-peeling part of the covering part Z in the part is located between the ins support part 67 of the anvil type blade 31 and the inscrimp type blade 53.

<Second step> (see FIG. 14)
As shown in FIGS. 14A and 14B, after the electric wire E is fed, the press 33 starts to descend and the shank 59 slides downward.
As the shank 59 descends, the terminal feed mechanism 56 (see FIG. 7) is activated to feed the wire connection terminal 1 connected to the terminal band 21 ′ into the applicator 30.

That is, as clearly shown in FIG. 14B, the carrier 21 in the terminal band 21 'is positioned in the feed groove 54d of the slide cutter 54, and the wire upright piece of the wire connection terminal 1 in the terminal band 21'. 4a and 4b are located on the wire support part 39 of the anvil type blade 31, and the insulation upright pieces 6a and 6b are located on the ins support part 67 of the anvil type blade 31.
And the carrier connection part 22 in terminal strip 21 'is located under the lower edge 54f in the cutting blade 54e above the feed groove 54d.

<Third step> (see FIG. 15)
As shown in FIG. 15, when the press 33 is further lowered, the wire crimper type blade 32, the inscrimper type blade 53 and the cut-off punch 55 are also lowered integrally, and the push bar 33a in the clamping means 102 is clamped by the clamp 102a. The electric wire E begins to descend.
The descending electric wire E stops when it descends to the crimping position U by the standing pieces 4a, 4b, 6a, 6b in the electric wire connection terminal 1. At this time, the exposed conductive core S of the electric wire E is located between the left and right wire upright pieces 4a and 4b, and the non-peeled portion of the covering portion Z of the electric wire E is located between the left and right insulation upright pieces 6a and 6b. ing.

<4th process> (refer FIG. 12, 16)
As shown in FIG. 16, even after the electric wire E and the electric wire connecting terminal 1 are stopped at the caulking position U, the press 33 further descends, and the protrusion 55a of the cut-off punch 55 comes into contact with the contact surface 54c. The slide cutter 54 starts to be pushed down.
In parallel with the pressing of the slide cutter 54, the wire connection terminal 1 (particularly, the wire standing pieces 4a and 4b) and the wire support portion 39 of the anvil blade 31 enter the guide groove 34 of the wire crimper blade 32. To do.

As shown in FIG. 12 (a), the wire standing pieces 4a and 4b that have entered the guide groove 34 are connected to the conductive core S along the left and right groove inner walls 35a and 35b in which the groove width W3 narrows toward the back of the groove. It is closed gradually with the in between.
Further, when the wire crimper blade 32 is lowered, the left and right wire upright pieces 4a and 4b come into contact with the left and right arch groove bottoms 36a and 36b whose front ends are in the back of the groove, and the entire left and right wire upright pieces 4a and 4b are It is crimped in a curved shape. At this time, the shape of the cross section orthogonal to the longitudinal axis X in each of the wire standing pieces 4a and 4b is substantially F-shaped (F crimp).

The left and right chamfered portions 38a and 38b of the left and right chamfered blades 32 have left and right widths W1 on the left and right outer sides of the pair of left and right wire upright pieces 4a and 4b that are crimped and fixed in this manner. Therefore, a gap d is formed between the wire connection terminal 1 and the pair of left and right chamfered portions 38a and 38b (FIGS. 12A and 12B). reference).
The gap d is a substantially wedge-shaped gap surrounded by the left and right outer surfaces of the wire upright pieces 4a and 4b and the chamfered surfaces 40 of the chamfered portions 38a and 38b in plan view (FIG. 12B). reference).

Further, as shown in FIG. 12 (a), the lower end G1 of the left and right chamfered portions 38a, 38b is located below the lower end G3 of the left and right arch groove bottoms 36a, 36b. The arch groove bottoms 36a and 36b communicate with each other in the vertical direction at the height position of the lower end G3.
Such a gap d is generated when the wire connecting terminal 1 is pressed by the wire crimper blade 32, so that the surplus portion A generated at the end in the front-rear direction of the wire upright pieces 4a and 4b passes through the gap d. Thus, it becomes possible to move downward from the lower end G3 of the arch groove bottoms 36a, 36b, and the surplus portion A can escape in the direction away from the wire crimper blade 32 (anvil blade 31 side).

Simultaneously with the escape of the surplus part A, the force and impact applied from the wire crimper type blade 32 to the wire upright pieces 4a and 4b can also escape to the anvil type blade 31 side together with the surplus part A through the gap d. .
Therefore, the reaction force rebounding on the wire crimper blade 32 out of the force applied to the wire upright pieces 4a and 4b and the force (reaction force) generated by impact can be reduced, and the reaction force on the wire crimper blade 32 can be reduced. The reduction will be a big difference when they are pressed tens of thousands of times and hundreds of thousands of times.

If there is no gap d as described above, cracks and cracks occurred in the wire crimper type blade after 30,000 times of crimping and fixing. The crimper blade 32 is not cracked or cracked.
Accordingly, the service life of the wire crimper blade 32 can be dramatically increased, and at the same time, the maintenance can be facilitated and the economic efficiency can be improved by reducing the replacement frequency of the wire crimper blade 32.

The force F (pressing force) that the wire crimper type blade 32 generated by the press 33 presses the wire upright pieces 4a and 4b and the conductive core S is 1t (tons) to 2t (tons), for example, 1.5t. Set before and after (tons).
The reaction force to the wire crimper blade 32 is prevented from being accumulated in the wire crimper blade 32 as metal fatigue, damage to the internal structure, etc., and the wire crimper blade 32 is prevented from cracking and has a longer life. It becomes possible.
Furthermore, if the surplus portion A is allowed to escape from the left and right outer sides of the wire upright pieces 4a and 4b to the anvil blade 31 side, naturally, the pressure applied to the surplus portion A is reduced and heat generation is suppressed, so that seizure is prevented. Since it is possible to reduce or eliminate the oil to be applied, the oil cost can be reduced and the working efficiency can be improved.

Further, as shown in FIG. 12A, when the wire crimper type blade 32 is in the crimping position U (the position where the conductive core S is crimped and fixed between the wire upright pieces 4a and 4b), the chamfered portion 38 The lower end G1 is located below the upper end G2 of the wire support portion 39 of the anvil blade 31.
As a result, the gap d described above extends to a position below the wire upright pieces 4a and 4b, and the reaction force generated in the surplus portion A can be further reduced by the extent that the gap d extends.

Further, below the right and left outer sides of the wire standing pieces 4a and 4b (between the wire support portion 39 of the anvil blade 31 and the groove inner walls 35a and 35b of the guide groove 34 of the wire crimper blade 32 at the caulking position U). ) When there is a space C, the space C and the gap d communicate with each other.
This is because the surplus portion A and the reaction force generated by the pressing of the wire crimper blade 32 pass through the gap d between the wire standing pieces 4a and 4b and the chamfered portions 38a and 38b, and the wire standing pieces 4a and 4b. It is possible to reduce the reaction force to the wire crimper type blade 32 more reliably (around force F ″).

Providing such chamfered portions 38a and 38b is not only advantageous for wire crimper blade 32 and terminal crimping, but also suitable for the wire connecting terminal 1 to be crimped.
One is that crimping is performed because it prevents stress concentration in the wire upright pieces 4a and 4b to be crimped, and can disperse the stress to the anvil blade 31 side through the gap d together with the surplus portion A. Cracks, cracks and distortions in the side wire upright pieces 4a and 4b are also suppressed.

Furthermore, such a stress distribution increases the pressing force F that can be withstanding as a whole of the wire upright pieces 4a and 4b, so that the wire upright pieces 4a and 4b can be crimped with a stronger force. The tensile strength of the electric wire E is increased.
In addition to this, the bell mouth 11 formed on the wire upright pieces 4a and 4b of the wire connection terminal 1 by the chamfered portions 38a and 38b of the wire crimper blade 32 also has an advantage.

As described above, the arc portion 10 is provided at the front and rear ends of the standing ends of the wire standing pieces 4 a and 4 b that are crimped in a curved shape to form the bell mouth 11. If R is too small, the bell mouth 11 is not formed, and the radius R becomes a certain value or more.
On the other hand, when the radius R is too large, the arc portion 10 is located at the left and right center near the joint of the left and right wire upright pieces 4a and 4b. Eleven extra parts A will be left over.

However, since there is a gap d between the wire upright pieces 4a and 4b and the pair of left and right chamfers 38a and 38b, the surplus portion A remaining in the vicinity of the left and right center is also pressed outward in the left and right directions. Therefore, the bell mouth 11 formed when the wire upright pieces 4a and 4b are caulked becomes appropriate, and the life of the wire crimper type blade 32 to be described later is increased. 4a and 4b can be prevented from cracking, and the conductor portion W of the electric wire E can be prevented from being scratched and the conductive core material S can be prevented from being broken (that is, the conductor portion W is partially cut), so that the tensile strength of the electric wire can be prevented from being lowered. . Then, by forming the arc portion 10, when the wire standing pieces 4 a and 4 b are crimped and the standing tips are joined together, the arc portion 10 is also joined, and the surplus portion A is left and right by the amount of the arc portion 10. Since it is released to the outside, further stress distribution in the wire upright pieces 4a and 4b can be achieved.
The radius R may be any value as long as the bell mouth 11 is appropriately formed, but the thickness T of the metal plate K forming the terminal body 2 is not less than 0.10 mm and not more than 0.30 mm. In this case, the arc portion 10 formed on the wire upright pieces 4a and 4b may have a radius R set within a range of 0.10 mm to 0.40 mm.

In addition, the bell mouth 11 formed at the end in the front-rear direction of the wire upright pieces 4a, 4b by the wire crimper type blade 32 having the chamfered portions 38a, 38b having the left-right width W1 as described above is Features also occur in W4.
That is, the left and right width W4 of the bell mouth 11 is wider than the left and right width W5 of the middle part of the wire upright pieces 4a and 4b in the front-rear direction. The meat portion A not only escapes above the arch groove bottoms 36a and 36b along the chamfered portions 38a and 38b, but also escapes left and right.

Therefore, as compared with the case where the surplus portion A is not released to the left and right outwards, the stress applied to the wire upright pieces 4a and 4b is also distributed along the ends of the curved wire upright pieces 4a and 4b. 4b cracks, cracks and distortion can be prevented.
In addition, this invention is the electric wire E 'with the electric wire connection terminal 1 which has the welding part 3 welded to the electrically-conductive member B to the last, Comprising: It inserts in the cavity of a connector housing which does not have such a welding part 3. The application scene and technical idea differ from the terminal fitting, and even if the left and right width W4 of the bell mouth 11 is wider than the left and right width W5 of the middle part in the front-rear direction of the wire upright pieces 4a and 4b, it is caught by the cavity inner wall of the connector housing. Such inconveniences do not occur.

In addition, while the length L of the wire upright pieces 4a and 4b is set to the same value as the thickness t of the wire crimper blade 32, the left and right width W4 of the bell mouth 11 is set to the middle of the front and rear of the wire upright pieces 4a and 4b. To make the width wider than the left and right width W5, the wire crimper blade 32 is provided with a pair of left and right arch groove bottoms 36a and 36b and chamfered portions 38a and 38b, and the left and right width W1 of the chamfered portions 38a and 38b is an arch. It is essential that the groove bottoms 36a and 36b are wider than the lateral width W2.
Since the chamfered portions 38a and 38b have the left and right width W1, a gap d is formed between the wire standing pieces 4a and 4b and the pair of left and right chamfered portions 38a and 38b. The surplus portion A of the wire upright pieces 4a and 4b escapes to the left and right while hitting the chamfered portions 38a and 38b, and the stress concentration of the wire upright pieces 4a and 4b is prevented by the amount of escape of the surplus portion A. I can do it.

In this way, the direction in which the surplus portion A is released from the left and right outer clearances d while being applied to the chamfered portions 38a and 38b is pressed by the wire crimper blade 32 that is thinner than the longitudinal length L of the wire upright pieces 4a and 4b. The pressing force that can be withstood by the wire upright pieces 4a and 4b as a whole is higher than the case.
More specifically, if the thickness T of the metal plate K that is the source of the wire connection terminal 1 is the same, the durability against the pressing force is essentially the same, but there is a gap between the left and right outer sides of the wire upright pieces 4a and 4b. When d is present, the surplus portion A can be released downward, so that the stress applied to the wire upright pieces 4a and 4b can be dispersed.

However, when there is no gap d on the left and right outer sides of the wire upright pieces 4a and 4b (for example, when the chamfered portion extends to the intersection of the arch portion and the inner surface as in Patent Document 2, etc.) The part A cannot be escaped, and stress concentrates on the upper part (the part facing the chamfered part) of the wire upright pieces 4a and 4b.
Therefore, if there is no gap d and the same pressing force is applied as in the case where the gap d is present, the wire upright pieces 4a and 4b are cracked or broken by the amount of stress concentration.

That is, if there is a gap d, the pressing force that the wire standing pieces 4a, 4b can withstand is higher than when there is no gap d, and the wire standing pieces 4a, 4b can be crimped with a stronger force. The tensile strength of the electric wire E with respect to the electric wire connection terminal 1 can be improved.
Further, the durability against the tensile strength and the pressing force of the electric wire E can be determined from the range of the pressing portion 42 remaining on the wire upright pieces 4a and 4b.

Moreover, since the unevenness | corrugation in the surface of the terminal main body 2 is leveled by pressing the electric wire connection terminal 1 (terminal main body 2) from upper direction with the wire crimper type blade 32 in this way, the terminal main body 2 (metal plate K) A pressing portion 42 having a smaller surface roughness Ra (JIS-B-0601: 2001) than the original surface is generated.
The surface roughness Ra is the arithmetic average height of the contour curve, and is the average of the absolute values of the height (Z) at the reference length, and more specifically, the contour curve is the center line of the height. The value obtained by folding from the (average height) and dividing the area obtained by the contour curve and the center line by the reference length is expressed in micrometers (μm).
Further, the surface roughness Ra can be said to be the unevenness difference on the surface, and the pressed portion 42 has a smaller unevenness on the surface than the non-pressed portion 43.

The original surface roughness Ra of the terminal body 2 is preferably not less than a predetermined value in order to securely fix the conductive core material S of the electric wire E with the wire upright pieces 4a and 4b. The contact area between the conductive core S and the terminal body 2 is reduced, and the contact resistance is increased.
Therefore, the surface roughness Ra of the terminal body 2 is 0.1 μm or more and 10 μm or less, preferably 0.2 μm or more and 1.0 μm or less, and more preferably 0.3 μm or more and 0.8 μm or less.

Further, the surface roughness Ra of the terminal body 2 falls within the above-mentioned range regardless of the case where the metal plate K is made of nickel, regardless of the case where the material is nickel-plated SUS304 or the like.
Naturally, the surface roughness Ra of the terminal main body 2 in the non-pressing portion 43 not pressed by the wire crimper type blade 32 is also equal to the original surface roughness Ra of the terminal main body 2.
In addition, the actual surface roughness Ra of the terminal body 2 is slightly different for each terminal body 2 even if the value is within the above-described range, but the surface roughness of the pressing portion 42 in one terminal body 2. Ra has a value of the surface roughness Ra smaller than the surface roughness Ra of the non-pressing portion 43 in the same terminal body 2 by the amount pressed by the crimping tool such as the wire crimper type blade 32.

The difference in surface roughness Ra between the pressed portion 42 and the non-pressed portion 43 is 0.01 μm or more and 1 μm or less, preferably 0.05 μm or more and 0.8 μm or less, more preferably 0.1 μm or more and 0.5 μm or less. It becomes.
Accordingly, since the surface of the terminal body 2 also has a portion (non-pressing portion 43) that does not contact the wire crimper blade 32 and is not pressed, the surface of the terminal body 2 is pressed by the wire crimper blade 32. The pressing part 42 and the non-pressing part 43 having a surface roughness Ra larger than that of the pressing part 42 are divided.

Such a pressing portion 42 is not only in the longitudinal direction of the wire upright pieces 4a and 4b where the wire crimper blade 32 hits variously, but the left and right width W4 is the left and right width W5 of the midway in the longitudinal direction of the wire upright pieces 4a and 4b. It also occurs on the surface of the wider bell mouth 11.
The pressing portion 42 generated on the surface of the bell mouth 11 is formed by hitting the chamfered portions 38 a and 38 b of the wire crimper type blade 32, and when the wire upright pieces 4 a and 4 b are crimped and the bell mouth 11 is formed. The applied pressing force F is received by the wire standing pieces 4a and 4b and the entire pressing portion 42 of the bell mouth 11, and the stress generated in the wire standing pieces 4a and 4b is dispersed.

For example, the stress dispersion is higher than the stress dispersion in the case where there is no pressed portion on the surface of the bell mouth 11.
In addition, when a pressing part does not occur on the surface of the bell mouth 11, that is, the thickness t of the wire crimper blade 32 is thinner than the longitudinal length L of the wire upright pieces 4a and 4b, and the remainder corresponding to the bell mouth 11 When the wire Crimper blade 32 protrudes from the front-rear direction and is raised by the meat part A, stress is applied to the boundary between the pressed portion of the wire crimper blade 32 and the bell mouth 11 generated without being pressed. Concentrate.

Further, by forming the bell mouth 11 having the left and right width W4 wider than the left and right width W5 at the front and rear middle portions of the wire upright pieces 4a and 4b, distortion of the wire connecting terminal 1 to be fixed by crimping can be suppressed.
For example, if the front bell mouth 11 on the welding portion 3 side (front side) of the front and rear bell mouths 11 is described in detail, as shown in FIGS. There is a difference in width between the left and right widths of the welded portion 3.

However, since there is a front bell mouth 11 wider than the front and rear halfway portions of the wire standing pieces 4a and 4b between the front and rear halfway portions of the wire standing pieces 4a and 4b, the wire upright pieces 4a and 4b The width does not increase suddenly toward the welded portion 3, but gradually increases.
Since the wire connection terminal 1 has such a widening condition, the front bell mouth 11 absorbs the deformation of the metal plate K due to the crimping even when the wire upright pieces 4a and 4b are crimped. The distortion of the welded portion 3 can be suppressed.
Similarly, since the rear bell mouth 11 is located between the front and rear middle portions of the wire upright pieces 4a and 4b and the insulation upright pieces 6a and 6b, the wire upright pieces 4a and 4b are insulated from the insulation upright pieces 6a and 6b. , The width is gradually widened to prevent the distortion caused by the crimping from being transmitted to the insulation upright pieces 6a and 6b.

So far, the crimping and fixing with the wire crimper type blade 32 has been described. As with the wire crimper type blade 32, the pressing and lowering of the press 33 also performs the crimping and fixing with the incliner type blade 53.
The insulation upright pieces 6 a and 6 b of the electric wire connection terminal 1 and the insulative support portion 67 of the anvil type blade 31 enter the guide groove 70 of the inscrimp type blade 53, and a pair of left and right arch groove bottoms of the inscrimp type blade 53 Can hit the insulation upright pieces 6a and 6b, and the unpeeled portion of the covering portion Z of the electric wire E can be caulked.

Also, as shown in FIG. 16, when the press 33 is lowered to the end, the slide cutter 54 is pushed down by the cut-off punch 55, and the carrier connecting portion 22 of the terminal strip 21 'is connected to the lower edge 54f of the cutting blade 54e and the anvil. It cut | disconnects between the rear upper ends of the inner support part 67 of the type | mold blade 31. FIG.
By cutting the carrier connecting portion 22, the carrier 21 in the feed groove 54d, the wire connection terminal 1 on the anvil blade 31 and the wire E are separated.

At the time of this cutting, a part of the carrier connecting portion 22 (cut-off tab) may remain at the rear end of the wire connection terminal 1, but even if it remains, the length of the cut-off tab (front-rear length) ) Is suppressed to 0.30 mm or less at the longest.
The length of the cut-off tab is suppressed in this way because the positions of the terminal body 2 and the carrier 21 are controlled by the pilot holes 23 formed in the carrier 21, and the position of the terminal body 2 at the time of crimping and cutting This is because there is almost no deviation.

<Fifth step> (see FIG. 17)
After the completion of the crimping, the press 33 raises the shank 59, so that the crimper blades 32 and 53 and the cut-off punch 55 that are integrally attached to the shank 59 are also raised.
In synchronization with the ascent of each of the crimper type blades 32 and 53 and the cut-off punch 55, the clamp 102a that holds the electric wire E is also raised by a predetermined distance, and the electric wire E ′ to which the electric wire connecting terminal 1 is fixed by crimping is changed into an anvil type. It sends out from between the blade 31 and each crimper type | mold blade 32,53.

  The present invention is not limited to the embodiment described above. Each structure of the electric wire connection terminal 1 etc. or the whole structure, shape, dimension, etc. can be suitably changed along the meaning of the present invention.

The terminal crimping machine 30 is configured such that the anvil blade 31 is located below and the crimper blade 32 approaches from above, but the pressing direction of the crimper blade 32 is along the vertical direction (vertical direction). For example, the anvil blade 31 may be positioned above the crimper blade 32 and the crimper blade 32 may approach the anvil blade 31 from below.
At that time, the upper and lower relations of the upper, lower, upper and lower ends of the terminal crimping machine 30, the anvil blade 31 and the crimper blade 32 are upside down.

The welded portion 3 has a circular shape or a shape having a longitudinal direction in plan view. However, if the welded portion 3 can be welded to the electrode of the conductive member B and does not cause a short circuit, any shape such as an ellipse, a spiral shape, or a triangle shape may be used. But it ’s okay.
The number of the serration convex portions 9 may be one, or three or more as long as the serration convex portions 9 can be formed within the length L of the wire upright pieces 4 a and 4 b or the length of the conductor crimping portion 5.

The bell mouth 11 is formed on both the front end and the rear end of the crimped wire upright pieces 4a and 4b, but if the conductive core material S is not partially cut or damaged and the tensile strength of the electric wire E does not decrease, The wire upright pieces 4a and 4b may be provided at either the front end or the rear end.
In addition, when the conductor portion W of the electric wire E is a stranded wire obtained by twisting the conductive core material S, the bell mouth 11 is expanded in diameter so as to be separated from the conductive core material S. Therefore, the conductive core material S can have a natural twist.

The terminal-attached electric wire manufacturing apparatus, terminal crimping machine, and terminal crimping crimper blade according to the present invention mainly crimps a terminal for connecting an electric wire to a dry battery, a button battery, or the like. If it is a terminal comprised by the ultra-thin metal plate which crimps and fixes, it can utilize also for the terminal used for electrically-conductive members other than the battery of a computer and an audio equipment.
Of course, the electric wire with a terminal according to the present invention is not limited to an electric wire with a terminal for connecting the electric wire to a dry battery, a button battery, or the like, and similarly, it is extremely thin for caulking and fixing the electric wire in an electronic device. If it is a terminal comprised with the metal plate, even if it is an electric wire which attached the terminal used for electrically conductive members other than the battery of a computer and an audio equipment, it can utilize.

DESCRIPTION OF SYMBOLS 1 Electric wire connection terminal 2 Terminal main body 3 Welding part 4a, 4b A pair of left and right wire standing piece 10 Arc part of wire standing piece 11 Bell mouth of wire standing piece 30 Terminal crimping machine (applicator)
31 Anvil blade 32 Crimper blade (wire crimper blade)
33 Pressing means (press)
34 Guide groove 35a, 35b Groove inner wall 36a, 36b Arch groove bottom 37 Blade surface of crimper type blade 38a, 38b Chamfered portion 39 Wire support portion 40 Chamfered surface of chamfered portion 41 Bottom surface of arch groove bottom 42 Pressed portion 43 Non-pressing part 100 Manufacturing device of electric wire with terminal E Electric wire E 'Electric wire with terminal W Conductive core material of electric wire B Conductive member K Metal plate W1 Left-right width of a pair of left and right chamfers W2 Left-right width of a pair of left and right arch grooves W3 Guide groove groove width W4 Bellmouth left and right width W5 Left and right width in the longitudinal direction of the pair of left and right wire upright pieces L Length of the wire upright piece front and back t Crimper type blade thickness

Claims (11)

A terminal crimping machine for a wire connecting terminal (1) in which a conductive core (S) of an electric wire (E) is crimped and fixed between a pair of left and right wire upright pieces (4a, 4b) and connected to a conductive member (B). And
An anvil blade (31) that supports the electric wire connection terminal (1), and a crimper blade (32) that presses the electric wire connection terminal (1) along the vertical direction to the anvil blade (31). ,
The crimper blade (32) is formed with a guide groove (34) for allowing the wire connection terminal (1) and the anvil blade (31) supporting the wire connection terminal (1) to enter and exit along the pressing direction. And
The guide groove (34) is formed between a pair of left and right groove inner walls (35a, 35b) for guiding the wire connection terminal (1) and the anvil type blade (31) to the depth of the groove, and the groove inner walls (35a, 35b). A pair of left and right arch groove bottoms (36a, 36b) which are located in the back of the groove and are recessed so as to press and crimp the pair of left and right wire upright pieces (4a, 4b) of the wire connection terminal (1). And a pair of left and right chamfered portions (38a, 38b) along the ridge line between the pair of left and right arch groove bottoms (36a, 36b) and the blade surface (37) in the front-rear direction of the crimper type blade (32). ,
These chamfered portions (38a, 38b) are extended to the ridgeline between the groove inner walls (35a, 35b) of the guide groove (34) and the blade surface (37) of the crimper type blade (32),
A terminal crimping machine characterized in that a left-right width (W1) of the pair of left and right chamfered portions (38a, 38b) is wider than a left-right width (W2) of the pair of left and right arch groove bottoms (36a, 36b). . The anvil blade (31) is provided with a wire support (39) that supports a pair of left and right wire upright pieces (4a, 4b) of the wire connection terminal (1) from below.
The crimper type blade (32) approaches the electric wire connecting terminal (1) and the anvil type blade (31) from above, and a conductive core of the electric wire (E) between the pair of left and right wire upright pieces (4a, 4b). The wire support part (31) of the anvil blade (31) in which the lower end (G1) of the chamfered part (38a, 38b) at the caulking position (U) to which the material (S) is fixed by pressure has entered the guide groove (34) ( The terminal crimping machine according to claim 1, wherein the terminal crimping machine is located below the upper end (G2) of 39). The anvil blade (31) is provided with a wire support portion (39) for supporting a pair of left and right wire upright pieces (4a, 4b) of the wire connection terminal (1) from below.
The crimper blade (32) approaches the wire connection terminal (1) and the anvil blade (31) from above, and the lower end (G1) of the chamfered portion (38a, 38b) is a wire support portion (39). The guide groove (34) is formed by the groove width (W3) which makes an anvil type blade (31) approach into a groove | channel back from the upper end (G2) of this to a lower position of Claim 1 or 2 characterized by the above-mentioned. Terminal crimping machine. A crimping type for terminal crimping of a wire connecting terminal (1) in which a conductive core (S) of an electric wire (E) is crimped and fixed between a pair of left and right wire upright pieces (4a, 4b) and connected to a conductive member (B). A blade,
The wire connection terminal (1) is pressed along the up and down direction between the anvil blade (31) supporting the wire connection terminal (1), and the wire connection terminal (1) and the anvil are pressed along the pressing direction. A guide groove (34) for entering and exiting the mold blade (31) is formed,
The guide groove (34) is formed between a pair of left and right groove inner walls (35a, 35b) for guiding the wire connection terminal (1) and the anvil type blade (31) to the depth of the groove, and the groove inner walls (35a, 35b). A pair of left and right arch groove bottoms (36a, 36b) which are located in the back of the groove and are recessed so as to press and crimp the pair of left and right wire upright pieces (4a, 4b) of the wire connection terminal (1). And a pair of left and right chamfers (38a, 38b) along the ridge line between the pair of left and right arch groove bottoms (36a, 36b) and the blade surface (37) in the front-rear direction,
These chamfered portions (38a, 38b) extend to the ridgeline between the groove inner walls (35a, 35b) of the guide groove (34) and the blade surface (37),
The right and left width (W1) of the pair of left and right chamfered portions (38a and 38b) is wider than the right and left width (W2) of the pair of left and right arch groove bottoms (36a and 36b). Crimper type blade.   The lower end (G1) of the chamfered portion (38a, 38b) is below the lower end (G3) of the arch groove bottom (36a, 36b), approaching the wire connecting terminal (1) and the anvil type blade (31) from above. The crimper type blade for terminal crimping according to claim 4, wherein   The chamfered surface (40) of the chamfered portion (38a, 38b) is continuous with the bottom surface (41) of the arch groove bottom (36a, 36b) via a curved surface (R '). The crimper type blade for terminal crimping according to claim 4 or 5. An electric wire with a terminal having an electric wire (E) and an electric wire connecting terminal (1) for connecting the conductive core (S) of the electric wire (E) to the conductive member (B),
A welded portion formed at the front end of the terminal body (2) and welded to the conductive member (B) on a terminal body (2) formed by processing and molding a metal plate (K) having at least both front and back surfaces made of nickel. (3) and a pair of left and right wire upright pieces (4a, 4b) formed in a midway portion in the front-rear direction of the terminal body (2),
A pair of left and right wire upright pieces (4a, 4a, 4c) pressed by a crimper type blade (32) approaching the anvil type blade (31) supporting the pair of left and right wire upright pieces (4a, 4b) 4b), the conductive core material (S) of the electric wire (E) is fixed by crimping,
A bell mouth (11) is formed at the ends in the front-rear direction of the pair of left and right wire upright pieces (4a, 4b) that are fixed by crimping.
The left and right width (W4) of the bell mouth (11) is wider than the left and right width (W5) of the midway part in the front-rear direction of the pair of left and right wire upright pieces (4a, 4b) fixed by crimping. Electric wire with terminal.   The front-rear length (L) of the pair of left and right wire upright pieces (4a, 4b) is the same value as the thickness (t) of the crimper blade (32). Electric wire with terminal as described in 2. The surface of the terminal body (2) includes a pressing part (42) formed by pressing the crimper blade (32), and a non-pressing part (43) having a surface roughness Ra larger than the pressing part (42). Divided into
The said wire standing piece (4a, 4b) has the said press part (42) in the middle part of the front-back direction in this wire standing piece (4a, 4b) and the surface of a bell mouth (11). The electric wire with a terminal according to claim 7 or 8.   The wire standing piece (4a, 4b) caulked in a curved shape has an arcuate portion (10) formed at an end portion in the front-rear direction at a tip end in the standing direction. The electric wire with a terminal given in any 1 paragraph. Electric wire connection terminal (1) for connecting the electric wire (E) and the conductive core (S) of the electric wire (E) to the conductive member (B) by crimping and fixing between the pair of right and left wire upright pieces (4a, 4b) An apparatus for manufacturing a terminal-attached electric wire having:
An anvil blade (31) that supports the electric wire connection terminal (1), a crimper blade (32) that presses the electric wire connection terminal (1) along the vertical direction against the anvil blade (31), and the crimper. Pressing means (33) for pressing the mold blade (32) against the electric wire connection terminal (1) is provided;
The crimper type blade (32) is formed with a guide groove (34) for allowing the wire connecting terminal (1) and the anvil type blade (31) supporting the wire connecting terminal (1) to enter and exit along the pressing direction. And
The guide groove (34) is formed between a pair of left and right groove inner walls (35a, 35b) for guiding the wire connection terminal (1) and the anvil type blade (31) to the depth of the groove, and the groove inner walls (35a, 35b). A pair of left and right arch groove bottoms (36a, 36b) which are located in the back of the groove and are recessed so as to press and crimp the pair of left and right wire upright pieces (4a, 4b) of the wire connection terminal (1). And a pair of left and right chamfered portions (38a, 38b) along the ridge line between the pair of left and right arch groove bottoms (36a, 36b) and the blade surface (37) in the front-rear direction of the crimper type blade (32). ,
These chamfered portions (38a, 38b) are extended to the ridgeline between the groove inner walls (35a, 35b) of the guide groove (34) and the blade surface (37) of the crimper type blade (32),
The left-right width (W1) of the pair of left and right chamfers (38a, 38b) is wider than the left-right width (W2) of the pair of left and right arch groove bottoms (36a, 36b). Manufacturing equipment.

Images