JP2003168536A - Terminal crimping mold and terminal crimper having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal crimping mold and a terminal crimper having the same that crimp and connect the terminal fitting and the cable, without incurring jumping up of the core wire terminal part and swelling in the width direction of the cable crimping part. <P>SOLUTION: A pressuring part 36 for pressuring the terminal part of the core wire is provided at the extension part in the thickness direction of the caulking part 28 provided on the depth side of the guide part 27 and the pressuring part 36 and the caulking part 28 are formed continued on the same plane. By providing the pressuring part 36, the core wire terminal part is pressed down. The thickness of the guide part 27 is formed thicker than the thickness of the caulking part 28. By forming the thickness of the guide part 27 thicker, the top end and the side plate adjacent to the top end of the cable crimping member 33a are contained by the inner wall 27a of the guide part 27. It is also effective to provide a chamfering part at the edge of the pressuring part 36. By providing the chamfering part, concentration of shearing stress at the border between the pressuring part 36 and the side plate can be avoided. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal crimping die for crimping and connecting an electric wire crimping piece of a terminal fitting and an electric wire, and a terminal crimping machine having the terminal crimping die.

[0002]

2. Description of the Related Art FIGS. 10 and 11 show an example of a technique related to this type of terminal crimping type, which is disclosed in Japanese Unexamined Patent Publication No. 9-3065.
This is disclosed in Japanese Patent No. 55. 10 is a sectional view showing the terminal crimping die, and FIG. 11 is a perspective view of the terminal crimping die shown in FIG.

A crimper (pressing side terminal crimping type) 50 is
It is supported by the ram of a terminal crimping machine (not shown), and by raising and lowering the ram by the driving force of a servomotor,
It is possible to approach the anvil (pedestal side terminal crimping type) 51. The terminal fitting 60 is sandwiched between the crimper 50 and the anvil 51, and by lowering the crimper 50, the wire crimping piece 63a of the terminal fitting 60 is crimped and crimped to the electric wire 65. .

As shown in FIG. 10, the terminal fitting 60 is a so-called female terminal fitting, in which a box-shaped electric contact portion 61 is formed at one end in the longitudinal direction, and a wire crimping portion 62 is formed at the other end in the longitudinal direction. Are formed. An electric contact portion of a mating terminal fitting (not shown) is inserted into the electric contact portion 61 so that both terminal fittings are electrically connected.

The electric wire crimping portion 62 is composed of a core wire crimping portion 63 and a covered wire crimping portion 64 which are arranged in the longitudinal direction.
The stripped core wire 65b is connected to the core wire crimping portion 63, and the covered wire 65a enclosing the core wire 65b is connected to the covered wire crimping portion 64. The core wire crimping portion 63 is provided with a pair of core wire wire crimping pieces 63a (only one side is shown in the figure) standing up from both sides of the substrate, and the covered wire crimping portion 64 is similarly provided with a pair of covered wire wire crimping pieces. 64a (only one side is shown in the figure).

The crimper 50 and the anvil 51 are formed in two sets in the longitudinal direction so as to correspond respectively to the core wire crimping portion 63 and the covered wire crimping portion 64 (the crimper and the anvil of the covered wire crimping portion 64). Is not shown). As shown in FIG. 11, the crimp portion 53 of each crimper 50 is formed on the inner side of the guide portion 52 and includes a pair of arch portions 53a and a protrusion portion 53b located between the pair of arch portions 53a. The electric wire 65 is crimp-connected to the terminal fitting 60 by a so-called B-type crimping method.

A core wire pressing portion 55 is provided on the crimper 50 corresponding to the core wire crimping portion 63. The core wire pressing portion 55 is formed in an L shape, and the core wire 65 is formed at the lower end portion 56 thereof.
The terminal portion 65c of b is pressed down. A lower end portion 56 of the core wire pressing portion 55 projects vertically downward from the crimp portion 53 of the crimper 50.

With the above structure, the crimper 50 and the anvil 51 are brought close to each other and the wire crimping piece 63a is crimped, and at the same time, the end portion 65c of the core wire 65b is also pressed down, so that the end portion 65c of the core wire 65b jumps up. Is prevented.

[Problems to be Solved by the Invention]

However, the above-mentioned conventional terminal crimping type has the following problems to be solved.

The core wire retainer 55 prevents the core wire 65b from jumping up by pressing the core wire 65b.
The flexible locking piece provided in the connector housing (not shown)
The core wire 65b and the electric wire are provided inside the crimped wire crimping piece 63a after crimping, so that the terminal fitting 60 can be locked without being hindered by the jumped up core wire 65b. There is a problem that a gap (play) is generated between the crimping piece 63a. This gap tends to expand as the core wire 65b is strongly pressed downward in the vertical direction. If there is a gap, the contact resistance between the core wire 65b and the wire crimping piece 63a is poor, and the contact resistance increases.
It may generate heat and cause a connection failure.

As shown in FIG. 12, when crimping a small-diameter electric wire 67 to the terminal fitting 60, the crimp height h1 of the electric wire 67 is lower than the standing height h2 of the side plate 60a standing upright from the board. There is also a problem that the side plate 60a is cracked or cracked by the shearing force of the crimper 50 under pressure. In particular, the side plate 60a is likely to be cracked or cracked in a small terminal fitting having a thin substrate.

In addition, as shown in FIG. 10, since the plate thickness t1 of the crimper 50 is substantially the same as the longitudinal width t2 of the wire crimping piece 63a, the bell mouth (crimping) of the core wire crimping portion 63 is performed. There is a problem that the side plate 60a adjacent to the conical extra-thickness portions 66 formed at both ends in the longitudinal direction and the core wire crimping portion 63 bulges outward in the width direction.

In view of the above points, the present invention provides a terminal crimping type for crimping and connecting a terminal metal fitting and an electric wire without causing the core wire end portion to bounce up, and without bulging in the width direction of the electric wire crimping portion. And a terminal crimping machine having the same.

[0014]

In order to achieve the above object, the invention according to claim 1 is arranged so as to face the terminal crimping die on the pedestal side and allows the terminal crimping die to enter. In the terminal side crimping die on the pressing side for crimping and connecting the terminal metal fitting and the core wire of the electric wire, the terminal of the core wire is provided at the extension portion of the caulking portion provided on the back side of the guide portion in the plate thickness direction. It is characterized in that a pressurizing section for pressurizing the section is provided, and the pressurizing section and the crimp section are continuous on the same plane.

With the above structure, the pressurizing portion is provided in the extension portion of the caulking portion in the plate thickness direction, so that when the electric wire crimping piece is caulked, the pressurizing portion presses the core wire terminal portion, and the core wire terminal portion. Bounce of is prevented. As a result, the terminal fitting housed in the terminal housing chamber is reliably locked by the flexible locking piece. Further, by making the pressurizing portion and the crimping portion continuous on the same surface, play is not generated in the core wire inside the crimped wire crimping piece, and the contact reliability between the electric wire and the terminal fitting is improved.

The invention according to claim 2 is arranged so as to face the terminal crimping die on the pedestal side, and has a guide portion for allowing the terminal crimping die to enter, and at the back side of the guide portion. In the terminal crimping die on the pressing side for crimping and connecting the terminal fitting and the core wire of the electric wire, the crimping portion has a plate thickness of the guide portion
It is characterized in that it is formed thicker than the plate thickness of the caulking portion, and the side plate of the terminal fitting is constrained to the inner side surface of the guide portion.

With the above structure, the thickness of the guide portion is made thicker than the thickness of the caulking portion, so that when the electric wire crimping piece is crimped, the end portion of the electric wire crimping piece is adjacent to the end portion. The side plate is constrained by the inner side surface of the guide portion, and prevents the terminal fitting from bulging outward in the width direction. As a result, the terminal fitting is inserted into the connector housing without being caught.

According to a third aspect of the present invention, in the terminal crimping die according to the second aspect, an end portion of the core wire is provided at an extension portion in the plate thickness direction of a caulking portion provided on the inner side of the guide portion. It is characterized by having a pressurizing unit for pressurizing.

With the above structure, the bulging of the terminal fitting to the outside in the width direction and the jumping up of the end portion of the core wire are prevented, the terminal fitting is inserted into the connector housing without being caught, and the terminal fitting is locked after the insertion. Definitely done.

Further, the invention according to claim 4 is the invention according to claim 1
The terminal crimping die according to any one of 3 above is characterized in that a chamfered portion is provided at an edge of the pressing portion.
With the above configuration, by providing the chamfered portion to the pressurizing portion, it is possible to prevent the shear stress from concentrating on the boundary portion between the pressurizing portion and the side plate, and avoid occurrence of cracks or cracks in the terminal fitting. It

According to a fifth aspect of the present invention, a terminal provided with a pedestal-side terminal crimping die and a pressing-side terminal crimping die for crimping and connecting the core wire of the electric wire by crimping the wire crimping piece of the terminal fitting. In the crimping machine, the terminal crimping die on the pressing side is formed.
It is characterized in that it is the terminal crimping type described in any one of.

With the above structure, the terminal metal fitting and the electric wire are sandwiched between the pressing side terminal crimping die and the pedestal side terminal crimping die which constitute the crimping applicator of the terminal crimping machine, and the upper and lower terminal crimping dies are provided. When they are brought close to each other, the wire crimping pieces of the terminal fitting are crimped, and the core wire of the wire and the terminal fitting are crimped and connected. Providing the pressurizing terminal crimping type with a pressurizing portion for pressurizing the end portion of the core wire prevents the end portion of the core wire from jumping up. If the thickness of the guide portion is made thicker than the thickness of the caulking portion, the end portion of the wire crimping piece and the side plate adjacent to the end portion are restrained by the inner side surface of the guide portion, and Swelling outward in the width direction is prevented. Further, when the chamfered portion is provided in the pressurizing portion, it is possible to prevent the shear stress from being concentrated on the boundary portion between the pressurizing portion and the side plate, and to avoid the occurrence of cracks or cracks.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION A specific example of an embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 5 show a first embodiment of a terminal crimping type according to the present invention.

The crimper (pressing side terminal crimping type) 25 of the present embodiment is an improved version of the crimper 50 shown in FIG. 10 or FIG. The configuration of 36 is the core wire pressing portion 55 of the conventional example.
The configuration is different.

FIG. 1 shows a crimper 25 which is vertically opposed to the anvil (pedestal side terminal crimping type) 18. The crimper 25 is a terminal crimping machine 10.
The ram 20 is supported by the ram support portion 15 a so as to be movable up and down, and can be brought into and out of contact with the anvil 18.

The crimper 25 is formed in a rectangular plate shape, and a lower end portion 25a facing the anvil 18 is provided with a guide portion 27 which allows the anvil 18 to enter and guides the wire crimping piece 33a. . Guide part 27
An inner side surface 27a having a tapered shape and a caulking portion 28 located on the back side of the inner side surface 27a are formed on the inner surface.

In the caulking portion 28, a pair of electric wire crimping pieces 33a of the terminal fitting 31 can be caulked inward,
A pair of arch portions 28a are formed symmetrically with respect to the central axis CL, and a central portion where the pair of arch portions 28a intersects,
The protrusion 28b is formed. That is, the caulking portion 28
Is formed such that the tip end portions of the pair of wire crimping pieces 33a bite into the electric wire 40 (FIG. 3) (by a so-called B-type crimping method) and the wire crimping pieces 33a are crimped.

The B type crimping method uses a pair of electric wire crimping pieces 33a.
Since the tip portions of the wire are contacted with each other in the central portion and are bitten into the electric wire 40, the electric wire crimping piece 33a and the electric wire 40 have strong adhesion and good electrical contact. Also, the electric wire 4
Even if 0 is pulled backward, it does not slip out easily and is a crimp connection method with high contact reliability.

FIG. 3 shows a so-called female terminal fitting 31. The illustrated terminal fitting 31 is formed by punching out and bending a conductive substrate 31a, and is provided with a box-shaped electric contact portion 35 on one side in the longitudinal direction.
An electric wire crimping portion 32 is provided on the other side.

An electrical contact portion (not shown) of a male terminal fitting, which is a counterpart, is inserted into the box-shaped electrical contact portion 35,
It is designed to be electrically connected. Wire crimp part 32
Is a covered wire crimping portion 3 for crimping the covered wire 40a of the electric wire 40.
4 and a core wire crimping portion 33 for crimping the stripped core wire 40b of the electric wire 40. The covered wire crimping portion 34 and the core wire crimping portion 33 include a pair of electric wire crimping pieces 33a and 34a rising from the substrate 31a. The pair of wire crimping pieces 33a and 34a are crimped inward by the lifting and lowering operation of the crimper 25 described later, and are crimped to the wire 40.

As shown in FIG. 2, a pressurizing portion 36 is provided at an extending portion of the caulking portion 28 in the plate thickness direction. The pressurizing portion 36 is for pressing the end portion 40c (FIG. 3) of the core wire 40b exposed from the end of the wire crimping piece 33a. Since the pressurizing portion 36 is formed, the end surface of the crimper 25 is not a flat surface but a step, and the cross-sectional view shows that the lower plate thickness of the crimper 25 is smaller than the upper plate thickness. It is thick (Fig. 2).

The pressurizing portion 36 is continuous with the caulking portion 28 on the same plane, and the pressurizing portion 36 has a pair of arch portions 28a and protrusions 28b extending from the caulking portion 28. The crimper 50 shown in FIGS. 10 and 11 of the prior art is provided with a core wire pressing portion 55. The core wire pressing portion 55 projects downward from the caulking portion 53, and the lower end portion 5 is formed.
6 is a flat surface, which is different from the pressing unit 36 of the present embodiment.

By providing the pressurizing portion 36 on the extension of the caulking portion 28 and by providing the arch portion 28a and the projection portion 28b, play is generated in the core wire 40b inside the crimped wire crimping piece 33a. Is prevented, and the core wire 40b
The contact reliability between the terminal fitting 31 and the terminal fitting 31 is improved.

Further, as shown in FIG. 4, a chamfered portion 36c may be provided on the edge 36b (FIG. 2) of the pressing portion 36. The edge 36b corresponds to the lower edge of the pressurizing portion 36 and the ridge line portion of the end face that continues substantially orthogonal to the lower edge. Such chamfer 3
As shown in FIG. 12, 6c is particularly effective when the crimping height h1 of the wire crimping piece 63a is lower than the standing height h2 of the side plate 60a. At this time, the chamfered height h3 of the chamfered portion 36c is preferably set to be equal to or higher than the standing height h2 (FIG. 5) of the side plate 31b of the terminal fitting 31.

FIG. 5 shows a crimper 2 having a chamfered portion 36c.
5 shows a state in which the electric wire 40 and the terminal fitting 31 are crimped, and burr-shaped bell mouths 38 project above the side plate 31b on both sides of the core wire crimping portion 33. By providing the chamfered portion 36c, the pressing portion 36 and the side plate 31 are provided.
The concentration of shear stress at the boundary with b is avoided,
Generation of cracks and cracks is suppressed.

The opening width of the caulking portion 28 and the depth of the arch portion 28a are determined according to the crimping height of the wire crimping piece 33a (so-called crimp height) and the crimping width of the wire crimping piece (so-called crimp wide). It is a thing. The opening width is such that the wire crimping piece 33a can enter the caulking portion 28 even when the wire crimping piece 33a is not standing upright with respect to the substrate 31a but slightly open outward. The size is set wider than the crimp width. Arch portion 28a
Depth determines the crimp height of the electric wire crimping piece 33a, and is set to a dimension that allows the electric wire 40 and the electric wire crimping piece 33a to be crimped tightly without a gap.

The anvil 18 corresponds to a terminal crimping type on the pedestal side, and a mounting surface 18a on which the terminal fitting 31 is mounted is formed on the upper end 19 of the crimper 25 which faces the lower end 25a. (Figure 1). The mounting surface 18a is provided on the substrate 31 of the terminal fitting 31 so that the terminal fitting 31 does not rattle.
It is formed in a shape substantially the same as the curved shape of a. Anvil 1
Both end portions 18a, 18b of 8 are formed on a flat surface orthogonal to the vertical direction, so that both end portions 18a, 18b of the anvil 18 do not bite into the terminal fitting 31 when the wire crimping piece 33a is caulked. It is like this.

The anvil 18 is capable of advancing and retracting to and from the guide portion 27 of the crimper 25 so that the anvil 18 can enter deep inside the guide portion 27, but the anvil 18 is attached to the inner side surface 27a of the guide portion 27. It does not come into contact.

Now, the process of crimping the terminal fitting 31 and the electric wire 40 will be described. When the terminal fitting 31 and the electric wire 40 are sandwiched between the crimper 25 and the anvil 18 and the crimper 25 and the anvil 18 are brought close to each other, the tip end of the wire crimping piece 33 a of the terminal fitting 31 causes the crimping portion 28 of the crimper 25.
Followed by, it is crimped inward. And crimper 25
And the anvil 18 are brought close to each other, a pair of wire crimping pieces 3
3a abuts each other at the center, turns downward in the vertical direction, and pierces the electric wire 40. Further, when the crimper 25 and the anvil 18 are brought close to each other, the wire crimping piece 33a crimps the wire 40 so as to be held, and at the same time, the pressurizing portion 36 formed in the extension portion of the caulking portion 28 has the core wire 40b. The terminal portion 40c of is pressed.

As a result, the electric wire 40 becomes the electric wire crimping piece 33.
It is tightly connected to a and the end portion 4 of the core wire 40b
0c is prevented from jumping up, the terminal fitting 31 is smoothly inserted into the connector housing (not shown), and the terminal fitting 31 is securely locked by the flexible locking piece 39 (FIG. 3). Be seen.

Next, the overall structure of the terminal crimping machine 10 equipped with the above-described crimper 25 and anvil 18 will be described. As shown in FIG. 6, the terminal crimping machine 10 includes a base 11 installed on a floor or the like, a drive source 13, and a crimping applicator 12 that includes a crimper 25 and an anvil 18 vertically opposed to each other. It is configured.

The base 11 has a flat portion 11a which is substantially flat along the horizontal direction. A crimping applicator 12, which will be described later, is placed on and supported by the base 11.

The drive source 13 comprises a servo motor (not shown), a drive shaft 13b for transmitting a driving force, and a hook 13a hooked on the disc portion 23a of the shank 23. The rotary motion of the servo motor is converted into a linear motion via a piston / crank mechanism, so that the ram 20 can be moved up and down. As the drive source 13, a hydraulic cylinder provided with a piston rod connected to the shank 23 by a direct drive method may be used instead of the servo motor.

The crimping applicator 12 is a crimper 25.
And the anvil 18, and the crimp 25 is moved up and down to crimp the wire crimping piece 33a of the terminal fitting 31 and thereby the electric wire 40.
It has a structure for crimp connection.

As the terminal fitting 31 to be crimped by the crimping applicator 12, various kinds of terminal fittings 31 having at least a pair of wire crimping pieces 33a can be applied. For example, the box-like terminal fitting 31 shown in FIG. A female terminal fitting 31 having the electric contact portion 35, other male terminal fittings (not shown), and a terminal fitting for joints (not shown) for connecting the electric wires 40 on both sides are applicable.

The ascending / descending operation of the crimper 25 converts the rotational movement of the servo motor (not shown) into a linear movement by a piston / crank mechanism (not shown), and raises or lowers the ram 20 holding the crimper 25. It is done by A control unit (not shown) that controls the raising and lowering operation of the ram 20 is configured to control the ram 20 such as acceleration, deceleration, crimping, and retracting.

The structure of the crimping applicator 12 will be described. The crimping applicator 12 includes a holder 17 having an anvil 18 and a base 11 via a frame 15.
The ram 20 is integrally fixed to the ram 20, and the shank 23 is screwed to the ram 20 via the ram bolt 21.
Each component will be described below.

An anvil 18 on which the terminal fitting 31 is placed is embedded in the holder 17. The holder 17 has a flat surface 17a facing both the crimper 25 and the lower end surface 20b of the ram 20. That is, the flat surface 17a
Are formed substantially orthogonal to the ascending / descending direction.

The anvil 18 is mounted on the mounting portion 15b of the frame 15 while being housed in the holder 17. The anvil 18 is held in a state where the bottom wall of the anvil 18 is in close contact with the bottom wall of the holder 17, and the terminal fitting 31 is placed on the anvil 18 in a stable state.

The ram 20 is formed in a rectangular shape. The ram 20 is vertically movable along the ram support 15
supported by a. Moreover, the longitudinal direction of the ram 20 is along the up-down direction, that is, the vertical direction. The lower end surface 20b of the ram 20 is formed flat along a direction orthogonal to the ascending / descending direction.

The shank 23 is formed in a hollow cylindrical shape. The shank 23 is configured such that the disc portion 23a on one side is coupled to the hook 13a of the drive source 13 and the screw portion on the other side is screwed into the screw hole of the ram bolt 21.
That is, the shank 23 transmits the driving force of the driving source 13 to the ram 20 via the ram bolt 21, and the crimper 25
Can be moved up and down.

The shank 23 is provided with a nut 24 that is screwed into the thread groove.
The ram bolt 21 and the shank 23 are fixed to each other by fastening the nut 24 when the ram bolt 21 is screwed into the screw hole.

FIGS. 7 and 8 show a terminal crimping mold according to the second embodiment of the present invention. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 7, the crimper 45 is provided with a guide portion 47 into which an anvil (not shown) enters and a crimp portion 48 formed on the inner side of the guide portion 47. Then, it is common with the crimper 25 of the first embodiment.
The difference from the first embodiment is that the guide portion 47 is thicker than the crimp portion 48.

That is, the caulking portion 48 is formed so as to project downward on the inner side of the guide portion 47 and is recessed inward from the end surface of the guide portion 47. The plate thickness of the crimp portion 48 is the crimper (crimp portion 28) shown in the first embodiment.
Since it is the same as the plate thickness of No. 25, the width of the inner side surface 47a in the plate thickness direction becomes wider as the guide portion 47 becomes thicker, and the side plate 31b of the terminal fitting 31 (FIG. 3) continuing to both ends of the wire crimping piece 33a. Is constrained by the inner side surface 47 a of the guide portion 47.

As shown in FIG. 8, the terminal portion 4 of the core wire 40b is
The pressurizing portion 36 is continuously formed on the caulking portion 48 facing the 0c side, similarly to the configuration of the first embodiment. Therefore, in the crimper 45 of the present embodiment, both end surfaces facing the longitudinal direction are not flat surfaces that are uniform but stepped.

FIG. 9 is a plan view showing a state in which the electric wire 40 and the terminal fitting 31 are crimped by the crimper 45 of this embodiment. The side plates 31b on both sides following the core crimping portion 33 are shown in FIG.
Is formed to have the same width as the crimping width of the core wire crimping portion 33. Therefore, the terminal portion 40c of the core wire 40b is connected to the pressing portion 36
The side plate 31b of the terminal fitting 31 is prevented from bulging outward in the width direction, and the terminal fitting 31 can be inserted into the connector housing (not shown) without rubbing. At the same time, the terminal fitting 31 can be securely locked in the terminal housing chamber.

The overall structure of the terminal crimping machine according to the second embodiment is the same as that of the first embodiment, and the description thereof is omitted.

[0059]

As described above, according to the invention of claim 1, since the pressurizing portion for pressurizing the end portion of the core wire is provided in the extension portion of the caulking portion in the plate thickness direction, the core wire The terminal portion is prevented from jumping up, and since the pressurizing portion and the crimping portion are continuous on the same surface, no play occurs in the core wire inside the crimped wire crimping piece. Therefore, the terminal fitting can be securely locked by the flexible locking piece provided in the connector housing, the terminal fitting incorporated in the connector housing can be prevented from coming off, and the contact reliability between the electric wire and the terminal fitting can be improved. improves.

According to the second aspect of the invention, since the thickness of the guide portion is thicker than the thickness of the caulking portion, the end portion of the wire crimping piece and the side plate adjacent to the end portion are attached. However, it is restrained by the inner side surface of the guide portion, and the terminal metal piece is prevented from bulging outward in the width direction. Therefore, the terminal fitting can be inserted into the connector housing without being caught, and the assembling property of the terminal fitting is improved.

According to the third aspect of the invention, the bulging of the terminal fitting outward in the width direction and the jumping up of the terminal portion of the core wire are prevented. Therefore, the same effects as those of the first and second aspects of the present invention can be obtained, and the terminal fitting can be incorporated in the connector housing without any trouble, and the locking is surely performed.

Further, according to the invention of claim 4, since the chamfered portion is provided at the edge of the pressurizing portion, the shear stress acting on the boundary portion between the pressurizing portion and the side plate is relaxed, and cracking occurs. The occurrence of cracks and cracks is suppressed. Therefore, in addition to the effects according to claim 1 or claim 2, damage to the terminal fitting can be prevented, and the reliability of the electrical connection can be maintained.

According to the fifth aspect of the invention, the terminal fitting and the electric wire are provided between the pressing side terminal crimping die and the pedestal side terminal crimping die which constitute the crimping applicator of the terminal crimping machine. It is sandwiched, and the wire crimping piece of the terminal fitting and the wire are crimped. Therefore, it is possible to provide a terminal crimping machine capable of crimping and connecting the terminal fitting and the electric wire without causing the core wire end portion to bounce and the electric wire crimping portion to bulge in the width direction.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a terminal crimping type according to the present invention.

FIG. 2 is a sectional view taken along line AA of the terminal crimping type shown in FIG.

FIG. 3 is a side view showing a state in which an electric wire and a terminal fitting are also crimped by a terminal crimping type.

FIG. 4 is a cross-sectional view in which the edge of the terminal crimping die shown in FIG. 2 is chamfered.

5 is a side view showing a state in which an electric wire and a terminal fitting are crimped by the terminal crimping type shown in FIG.

FIG. 6 is a front view showing an embodiment of a terminal crimping machine according to the present invention.

FIG. 7 is a perspective view showing a second embodiment of the terminal crimping type according to the present invention.

8 is a sectional view taken along line BB of the terminal crimping type shown in FIG.

FIG. 9 is a plan view showing a state in which an electric wire and a terminal fitting are crimped by a terminal crimping type.

FIG. 10 is a sectional view showing an example of a conventional terminal crimping type.

FIG. 11 is a perspective view of the terminal crimping type shown in FIG.

FIG. 12 is a side view of another example in which an electric wire and a terminal fitting are also crimp-connected by a terminal crimping type.

[Explanation of symbols]

10 terminal crimping machine 12 crimping applicator 18 anvil (pedestal side terminal crimping type) 25,45 crimper (pressing side terminal crimping type) 27,47 guide part 27a inner surface 28,48 crimping part 31 terminal metal fitting 31b side plate 33 core wire crimping portion 36 pressurizing portion 36c chamfering portion 38 bell mouth 40b core wire 40c terminal portion

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hironori Kitagawa             206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Yazaki             Parts Co., Ltd. (72) Inventor Megumi Matsuura             206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Yazaki             Parts Co., Ltd. (72) Nobuhiro Kakuhari, Inventor             206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Yazaki             Parts Co., Ltd. F-term (reference) 5E063 CB02 CC05 CD01 CD26 XA02                 5E085 BB03 BB12 CC03 CC08 DD14                       EE11 FF13 HH07 HH08 HH26                       HH32 JJ06 JJ36

Claims (5)

[Claims] 1. A terminal on the pressing side, which is arranged so as to face the terminal crimping die on the pedestal side and has a guide portion which allows the terminal crimping die to enter, and which crimps and connects the terminal fitting and the core wire of the electric wire. In the crimping type, a pressurizing portion for pressurizing the end portion of the core wire is provided at an extension portion of the caulking portion provided on the back side of the guide portion in the plate thickness direction, and the pressurizing portion and the caulking portion are provided. Terminal crimping type characterized in that and are continuous on the same surface. 2. The terminal, which is arranged so as to face the terminal crimping die on the pedestal side, has a guide portion that allows the terminal crimping die to enter, and has a caulking portion on the inner side of the guide portion. In the terminal crimping type on the pressing side for crimping and connecting the metal fitting and the core wire of the electric wire, the thickness of the guide portion is formed to be thicker than the thickness of the caulking portion, and the terminal metal fitting is formed on the inner surface of the guide portion. Terminal crimping type characterized in that the side plates of the terminal are constrained. 3. A pressurizing portion for pressurizing an end portion of the core wire is provided at an extension portion in the plate thickness direction of a caulking portion provided on the back side of the guide portion. Terminal crimp type. 4. The terminal crimping mold according to claim 1, wherein a chamfered portion is provided on an edge of the pressing portion. 5. A terminal crimping machine comprising a pedestal-side terminal crimping die and a pressing-side terminal crimping die for crimping and connecting a core wire of an electric wire by crimping an electric wire crimping piece of a terminal fitting. The terminal crimping machine is the terminal crimping machine according to any one of claims 1 to 4.