JP2571318Y2 - Terminal crimping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal crimping apparatus for crimping an open barrel type crimp terminal to an end of an electric wire.

[0002]

2. Description of the Related Art Conventionally, an open barrel type crimp terminal has been known as one of crimp terminals crimped to an end of an electric wire. As shown in FIG. 4, the open barrel type crimp terminal has a wire barrel 11 crimped to a core wire W1 at an end of an electric wire W and an insulation barrel 12 crimped to a coated end W2. Is what it is. Each of these barrels 11 and 12 is formed in a line-symmetrical shape with a substantially U-shaped cross section, and the core W1 of the electric wire W is introduced into the wire barrel 11 and the covering end W2 is introduced into the insulation barrel 12, respectively. , Of terminal crimping equipment,
By crimping each of the barrels 11 and 12 with two pairs of crimpers 13 and anvils 14 arranged vertically opposite each other with the barrels 11 and 12 interposed therebetween (see FIG. 5), the crimp terminal 1 is connected to the electric wire W. It can be crimped to the end. As a crimping method of the crimp terminal 1, as shown in FIG.
A so-called overlap crimping method in which 11 is overlapped with the other end portion 121 is known.

[0005] As shown in FIG. 5, a crimper 13 for performing the above-mentioned overlap crimping is a first crimper 13 having a step 13c formed continuously at an edge portion for pressing the barrels 11 and 12.
And a second curved surface 13b are formed. The anvil 14 has a curved surface 14a formed at an edge portion for receiving the barrels 11, 12. According to the crimper 13 and the anvil 14, when the barrels 11 and 12 are sandwiched and pressurized between the two, first, one end portions 111 and 121 of the barrels 11 and 12 are firstly brought into contact with the corresponding first curved surface. 13a, the other end portions 112, 122
Are respectively set along the corresponding second curved surface 13b,
Utilizing the step 13c at the boundary between the curved surfaces 13a, 13b, one of the distal ends 111, 121 of the barrels 11, 12 is used.
Can be overlapped on the outer peripheral side of the other end portions 112 and 122 and caulked. Here, as shown in FIG.
Conventional crimper to achieve overlap crimping
Deepest portion of the curved surfaces 13a and 13b formed on the surface 13
P is the center of barrels 11 and 12 (the width of crimper 13)
To the line symmetric axis L2 passing through the
It is out of alignment. In contrast, the conventional anvil A2
The deepest portion Q of the curved surface 14a is on the line symmetry axis L2.
Was set to

In the crimping of the crimp terminal 1, it is necessary that the electrical connection of the electric wire W to the core wire W1 is completely ensured, and that the same strength as the tensile strength of the electric wire W is ensured. . Therefore, conventionally, the crimp terminal 1
The quality of the pressure bonding is determined by measuring the pressure bonding height H. FIG. 7 shows a measuring device 2 for measuring the crimping height H.
FIG. In the measuring device 2, a block-shaped movable contact 22 is attached to the tip of a probe of a dial gauge 21 supported on a base 20, and a block-shaped fixed contact 23 is attached below the movable contact 22. The measurement surface 22a of the movable contact 22 and the measurement surface 23a of the fixed contact 23 are horizontal parallel planes.

In the measurement of the crimping height H, the crimping portion X of the crimping terminal 1 is sandwiched between the movable contact 22 and the fixed contact 23 while maintaining the posture in the crimping step. The reading is performed by reading the scale of the dial gauge 20 in the state.

[0006]

However, in the conventional overlap crimping, as shown in FIG. 8, the contact S1 between the measuring surface 22a of the movable contact 22 and the crimping portion X and the measurement of the fixed contact 23 are measured. Since the line segment L connecting the surface 23a and the contact point S2 of the crimping portion X is inclined at a predetermined angle θ with respect to the direction in which the crimping terminal 1 is sandwiched by the contacts 22, 23, that is, the vertical direction, When the crimping portion X is sandwiched between the terminals 22 and 23, a rotational moment acts on the crimping terminal 1 and the crimping terminal 1 is rotated around the axis of the electric wire W, causing a measurement error and causing crimping. There was a problem that accurate judgment of quality was sometimes impossible.

[0007] As described above, this is applied to the crimper 13.
The formed deepest portion P is not located in the width direction from the line symmetry axis L2.
In contrast, the deepest part Q of the anvil A2 is
This was caused by being set on L2. The present invention has been made in view of the above problems, and has as its object to provide a terminal crimping apparatus that can accurately measure the crimping height H of the crimping terminal 1.

[0008]

In order to achieve the above-mentioned object, a terminal crimping apparatus according to the present invention has a center around a line symmetry axis.
Caulking the barrel formed symmetrically in
Crimp terminal with overlap crimp to the end of the wire
Having a crimper and an anvil, wherein the crimper comprises:
Deviates from the axis of symmetry in the width direction orthogonal to the axis of symmetry.
The pressurized curved surface that defines the deepest part at the
The anvil is formed with
Curved surface for barrel pressure that curves in opposition to the curved surface of par
In the terminal crimping device that has been
The deepest part of the curved surface of the above anvil is a line with the deepest part of the curved surface.
Unpair the anvil so that they face each other on a line parallel to the axis of symmetry.
It is characterized by being formed in a nominal shape .

[0009]

According to the terminal crimping apparatus having the above structure, the line connecting the deepest portions of the curved surfaces of the crimper and the anvil is set so as to be parallel to the axis of symmetry of the barrel. If the pinching direction of the terminal crimping section between the pair of contacts of the measuring instrument is matched with the direction of the line connecting the deepest portions of the respective curved surfaces of the crimper and the anvil, the crimped terminal that has completed crimping is left as it is. When the terminal is supplied to the crimping height measuring device in the posture described above, the portion corresponding to the deepest portion of the terminal crimping portion can be sandwiched by the pair of contacts of the measuring device. That is, the direction of the line connecting the contacts between the terminal crimping portion and the pair of contacts can be matched with the direction in which the terminal crimping portion is sandwiched by the contacts. For this reason, when the terminal crimping portion is sandwiched by the contacts, it is possible to prevent a rotational moment from acting on the terminal crimping portion, and thus prevent the crimping terminal from rotating.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 2 is a perspective view showing a main part of the terminal crimping device of the present invention. In this terminal crimping apparatus, the crimper C1 and the anvil A1 for caulking the wire barrel 11 of the open barrel type crimp terminal 1 and the crimper C2 and anvil A2 for caulking the insulation barrel 12 sandwich the crimp terminal 1 therebetween. In a state where the wire barrel 11 and the insulation barrel 12 of the crimp terminal 1 are respectively placed on the anvils A1 and A2, the crimpers C1 and C2 are respectively lifted and lowered by a not-shown means. To lower each barrel 1
By crimping 1 and 12, the crimp terminal 1 is crimped to the core wire W1 and the coated end W2 of the electric wire W, respectively.

The barrels 11 and 12 of the crimp terminal 1 are
It has a substantially U-shaped cross section composed of a pair of barrel claws 11a, 12a, 11b, 12b.
a, 12a and the other barrel claws 11b, 12b are formed substantially symmetrically about a line symmetric axis L2 extending in the vertical direction, respectively (see FIG. 1). As shown in detail in FIG. 1, the crimper C2 has at least two curved surfaces R1 and R2 whose end portions pressing the insulation barrel 12 are continuous with a step D. The edge of the anvil A2 facing the curved surfaces R1 and R2 is:
It is formed on a curved surface R3. And the above crimper C
2 so that a line segment L1 connecting the deepest portion (top portion) P of the edge portion of the second portion and the deepest portion (bottom portion) Q of the anvil A2 is parallel to the axis of symmetry L2 of the installation barrel 12. That is, it is set so as to face the vertical direction.

The crimper C1 and the anvil A1 for caulking the wire barrel 11 have the same configuration as the crimper C2 and the anvil A2 for caulking the insulation barrel 12 in accordance with the size of the core wire W1 of the electric wire W. It has become. With the above configuration,
The barrels 11 and 12 of the crimp terminal 1 are connected to the crimpers C1 and C1.
When the crimp terminal 1 is crimped to the electric wire W by being sandwiched between C2 and the anvils A1 and A2, the upper end portion X1 of the crimp portion X
A line segment L3 connecting the lower end portion X2 and the lower end portion X2 faces in the vertical direction (see FIG. 3). Therefore, the movable contact 2 of the measuring instrument 2
2 is set to the same vertical direction as the line segment L3, when the crimped terminal 1 that has been crimped is supplied to the measuring device 2 in the same posture, a pair of the measuring device 2 The crimping portion X can be sandwiched by the contacts 22 and 23 with the upper end portion X1 and the lower end portion X2 thereof in contact with the respective measurement surfaces 22a and 23a of the contacts 22 and 23. That is, the direction of the line segment L3 connecting the upper end portion X1 and the lower end portion X2 of the crimping portion X is determined by the contact 2
2 and 23 can be made to correspond to the clamping direction of the crimping portion X. For this reason, when the crimping portion X is sandwiched between the contacts 22 and 23, it is possible to prevent a rotational moment from acting on the crimping portion X. Therefore, there is no possibility that the crimp terminal 1 rotates, and the accurate crimp height H can be measured.

In the above embodiment, the crimper C1 and the anvil A1 and the crimper C2 and the anvil A
2, a line segment L1 connecting the deepest portions P and Q
Has been set to be parallel to the axis of symmetry L2 of the barrel of the corresponding crimp terminal 1, respectively.
However, the present invention is not limited to this. For at least one of the crimper C1 and the anvil A1, and the crimper C2 and the anvil A2, the line segment L1 may correspond to the corresponding crimp terminal 1.
May be set so as to be parallel to the axis of symmetry L2 of the barrel.

[0014]

As described above, according to the terminal crimping apparatus of the present invention, the direction of the line connecting the contacts between the terminal crimping portion and the pair of contacts of the crimp height measuring device, and the contact When the terminal crimping portion is sandwiched by the above-mentioned contacts, a rotation moment acts on the terminal crimping portion to prevent the crimping terminal from rotating. Therefore, it is possible to accurately measure the crimping height and thus to determine the quality of the crimping accurately.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a terminal crimping device of the present invention.

FIG. 2 is also an exploded perspective view of a main part.

FIG. 3 is a cross-sectional view showing a state in which the height of a crimp portion of a crimp terminal is measured.

FIG. 4 is a perspective view of a crimp terminal and an electric wire.

FIG. 5 is a cross-sectional view of a main part showing a conventional terminal crimping device.

FIG. 6 is a perspective view showing a state in which a crimp terminal is crimped on an electric wire.

FIG. 7 is a perspective view showing a crimp height measuring device of a terminal crimp portion.

FIG. 8 is an enlarged sectional view of a main part, similarly.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal 11 Wire barrel 12 Insulation barrel D Step R1 Curved surface R2 Curved surface A1 Anvil A2 Anvil C1 Crimper C2 Crimper L1 Line segment L2 Line symmetry axis

Claims (1)

(57) [Scope of request for utility model registration] A valley formed symmetrically about a line symmetry axis.
And crimp the crimp terminal with the barrel to the end of the wire.
Crimper and anvil to overlap and crimp
The crimper has a width perpendicular to the axis of symmetry
The deepest part at a position shifted from the axis of symmetry in the direction
The pressurized curved surface is formed via a step
The anvil above the bay faces the crimper
Terminal crimping device with curved barrel pressure receiving curved surface
Position of the anvil with respect to the deepest part of the crimper's curved surface.
The deepest part of the curved surface should face on a line segment parallel to the axis of symmetry
Terminal crimping device characterized in that the anvil is formed in an asymmetric shape .