JPH0636278U - Terminal crimping device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a terminal crimping device that prevents the crimping terminal 1 from rotating when measuring the crimping height of the crimping terminal 1 and enables accurate measurement. [Structure] Curved surface R1 of crimper C2 and R of anvil A1
Line segment L1 that connects the deepest portions P and Q of 3
Was set to be parallel to the line symmetry axis L2 of the barrel 12 of the crimp terminal 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a terminal crimping device for crimping an open barrel type crimp terminal to an end of an electric wire.

[0002]

[Prior art]

 BACKGROUND 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, this open barrel type crimp terminal has a wire barrel 11 crimped to the core wire W1 at the end of the electric wire W and an insulation barrel 12 crimped to the covered end W2. It has been done. Each of the barrels 11 and 12 is formed in a line-symmetrical shape with a substantially U-shaped cross section, and the core wire W1 of the electric wire W is introduced into the wire barrel 11 and the coated end portion W2 is introduced into the insulation barrel 12, respectively. By crimping the barrels 11 and 12 by crimping the barrels 11 and 12 of the terminal crimping device with two pairs of crimpers 13 and anvils 14 which are vertically opposed to each other with the barrels 11 and 12 interposed therebetween (see FIG. 5). The terminal 1 can be crimped to the end of the electric wire W. As a crimping method of the crimp terminal 1, there is known a so-called overlap crimping method in which one tip end portion 111 of each barrel 11, 12 is overlapped with the other tip end portion 121 as shown in FIG. ing.

As shown in FIG. 6, the crimper 13 for performing the above-described overlap crimping has a first curved surface 13 a, which is continuous by providing a step 13 c at the end edge portion that presses the barrels 11 and 12, and The second curved surface 13b is formed, and the anvil 14 is formed with a curved surface 14a at an edge portion for receiving the barrels 11 and 12. According to the crimper 13 and the anvil 14, when the barrels 11 and 12 are sandwiched between the crimpers 13 and the anvil 14 and pressure is applied, first, one of the tip portions 111 and 121 of the barrels 11 and 12 corresponds to the corresponding first portion. After the other tip portions 112 and 122 are aligned with the corresponding second curved surface 13b on the curved surface 13a, the step difference 13c at the boundary between the curved surfaces 13a and 13b is used to One tip portion 111, 121 can be superposed on the outer peripheral side of the other tip portion 112, 122 and caulked.

By the way, in crimping the crimp terminal 1, it is necessary to completely secure electrical connection with the core wire W1 of the electric wire W and to secure strength as high as tensile strength of the electric wire W. is there. Therefore, conventionally, the quality of crimping is determined by measuring the crimping height H of the crimping terminal 1. FIG. 7 is a perspective view showing a measuring device 2 for measuring the pressure-bonding height H. In this measuring device 2, a block-shaped movable contact 22 is attached to the tip of the contact of a dial gauge 21 supported by a base 20, and a block-shaped fixed contact 23 is provided below the movable contact 22. Are arranged opposite to each other, and the measurement surface 22a of the movable contact 22 and the measurement surface 23a of the fixed contact 23 are horizontal parallel planes.

Then, the crimp height H is measured by sandwiching the crimp portion X of the crimp terminal 1 between the movable contact 22 and the fixed contact 23 while maintaining the posture in the crimping process. This is done by reading the scale of the dial gauge 20 in this state.

[0006]

[Problems to be solved by the device]

 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, the measuring surface 23a of the fixed contactor 23, and the crimping portion X are connected. Since the line segment L connecting the contact S2 of the contactor 22 and 23 is inclined by a predetermined angle θ with respect to the sandwiching direction of the crimp terminal 1 by each of the contactors 22 and 23, that is, the vertical direction, the crimping portion is contacted by the contactor 22 and 23. When X is sandwiched, a rotational moment acts on the crimp terminal 1 and the crimp terminal 1 is rotated around the axis of the electric wire W, which causes a measurement error and cannot accurately judge whether the crimp is good or bad. There was a problem that cases occurred.

The present invention has been made in view of the above problems, and an object thereof is to provide a terminal crimping device capable of accurately measuring the crimping height H of the crimping terminal 1.

[0008]

[Means for Solving the Problems]

 The terminal crimping device of the present invention for achieving the above object comprises a crimper having two curved surfaces that are continuous with a step, and an anvil having a curved surface facing the two curved surfaces, and the crimper is provided. In the terminal crimping device for crimping the crimping terminal to the end of the electric wire by sandwiching and crimping the barrel portion of the crimping terminal having a barrel of substantially axisymmetrical shape between the curved surfaces of the anvil, the crimper and anvil are used. The line segment connecting the deepest portions of the respective curved surfaces is set to be parallel to the line symmetry axis of the barrel.

[0009]

[Action]

 According to the terminal crimping device configured as described above, the line segment connecting the deepest parts of the respective curved surfaces of the crimper and the anvil is set to be parallel to the line symmetry axis of the barrel, so the crimp height measuring instrument If the direction in which the terminal crimping part is sandwiched by the pair of contacts is aligned with the direction of the line segment that connects the deepest parts of the curved surfaces of the crimper and anvil, the crimped terminal in the crimped state When supplied to the crimp height measuring instrument, the pair of contacts of the measuring instrument can sandwich the portion of the terminal crimping portion corresponding to the deepest portion. That is, the direction of the line segment connecting the respective contacts of the terminal crimping portion and the pair of contacts can be made coincident with the pinching direction of the terminal crimping portion by the contactor. 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 to prevent the crimping terminal from rotating.

[0010]

【Example】

 Embodiments will be described below in detail with reference to the accompanying drawings. FIG. 2 is a perspective view showing a main part of the terminal crimping device of the present invention. In this terminal crimping device, the crimper C1 and anvil A1 for crimping the wire barrel 11 of the open barrel type crimping terminal 1 and the crimper C2 and anvil A2 for crimping the insulation barrel 12 are used. The crimpers C1 and C2 are placed vertically opposite each other with the wire barrel 11 of the crimp terminal 1 and the insulation barrel 12 placed on the anvils A1 and A2, respectively. The crimping terminal 1 is crimped to the core wire W1 of the electric wire W and the coated end portion W2, respectively, by lowering the barrels 11 and 12 by elevating means (not shown).

Each of the barrels 11 and 12 of the crimp terminal 1 has a substantially U-shaped cross section including a pair of barrel claws 11a, 12a, 11b and 12b, and one barrel claw 11a and 12a and the other barrel claw 11a. The barrel claws 11b and 12b are formed substantially symmetrically with respect to a line symmetry axis L2 extending in the vertical direction (see FIG. 1). As shown in detail in FIG. 1, the crimper C2 has an end edge portion that presses the insulation barrel 12 has at least two curved surfaces R1 and R2 that are continuously provided with a step D. The edge portion of the anvil A2 facing the two curved surfaces R1 and R2 is formed into a curved surface R3. A line segment L1 connecting the deepest portion (top portion) P of the edge portion of the crimper C2 and the deepest portion (bottom portion) Q of the anvil A2 is parallel to the line symmetry axis L2 of the insulation barrel 12. , That is, it is set to face the vertical direction.

The crimper C1 and the anvil A1 for crimping the wire barrel 11 are the same as the crimper C2 and the anvil A2 for crimping the insulation barrel 12 according to the size of the core wire W1 of the electric wire W, respectively. It has a simple structure. With the above configuration, when the barrels 11 and 12 of the crimp terminal 1 are sandwiched between the crimpers C1 and C2 and the anvils A1 and A2 and the crimp terminal 1 is crimped to the electric wire W, A line segment L3 connecting the upper end portion X1 and the lower end portion X2 faces the vertical direction (see FIG. 3). Therefore, if the sliding direction of the movable contact 22 of the measuring device 2 is set to the same vertical direction as the line segment L3, when the crimp terminal 1 that has been crimped is supplied to the measuring device 2 in the same posture. In the state where the crimping portion X, the upper end portion X1 and the lower end portion X2 thereof are brought into contact with the respective measurement surfaces 22a and 23a of the contactors 22 and 23 by the pair of contactors 22 and 23 of the measuring instrument 2. It can be sandwiched. That is, the direction of the line segment L3 connecting the upper end portion X1 and the lower end portion X2 of the crimp portion X can be made to coincide with the sandwiching direction of the crimp portion X by the contacts 22 and 23. Therefore, when the crimp portion X is sandwiched by the contacts 22 and 23, it is possible to prevent a rotational moment from acting on the crimp portion X. Therefore, the crimping terminal 1 is not likely to rotate, and the crimping height H can be accurately measured.

In the above embodiment, the line segment L1 connecting the deepest portions P and Q of the crimper C1 and the anvil A1 and the crimper C2 and the anvil A2 is the barrel of the corresponding crimp terminal 1. Although the case is shown in which they are set to be parallel to the line symmetry axis L2, the present invention is not limited to this, and at least one of the crimper C1 and the ambile A1 and the crimper C2 and the anvil A2 is described above. It suffices that the line segment L1 is set to be parallel to the line symmetry axis L2 of the barrel of the corresponding crimp terminal 1.

[0014]

[Effect of device]

 As described above, according to the terminal crimping device of the present invention, the direction of the line segment connecting the respective contacts of the terminal crimping portion and the pair of contactors of the crimp height measuring instrument, and the terminal crimping portion of the contactor When the terminal crimping part is pinched by the contact in the same direction as the pinching direction, it is possible to prevent the crimping terminal from rotating due to the rotation moment acting on the terminal crimping part. There is a unique effect that the height can be accurately measured and, in turn, the quality of the compression can be accurately determined.

[Brief description of drawings]

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

FIG. 2 is likewise 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 sectional view of an essential part showing a conventional terminal crimping device.

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

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

FIG. 8 is likewise an enlarged cross-sectional view of a main part.

[Explanation 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)

[Scope of utility model registration request] 1. A crimper having two curved surfaces continuous with a step, and an anvil having a curved surface facing the two curved surfaces, wherein the crimper and the anvil have a substantially line-symmetrical shape. In the terminal crimping device for crimping the crimping terminal to the end of the electric wire by sandwiching and crimping the barrel portion of the crimping terminal having the barrel of, the line segment connecting the deepest parts of the respective curved surfaces of the crimper and the anvil is The terminal crimping device is set to be parallel to the line symmetry axis of the barrel.