JPH09161938A - Terminal crimp method for wire and terminal crimp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely position a connection terminal, a wire crimped to the connection terminal, and a plug body fitted to the wire at a predetermined position. SOLUTION: In a terminal crimp device 20 the calking portions 14, 15 of a connection terminal 12 into which the core wire 13 of a wire 11 are inserted are plastic-deformed by crimp members 21a, 21b so as to crimp the wire 11 to the connection terminal 12. In this case the tip of the core wire 13 of the wire 11 is brought into contact with one side face 23 of a wire/terminal positioning member 22, and simultaneously the abutting portion 17 of the connection terminal 12 is brought into contact with the other side face 24 thereof so as to position the wire 11 and the connection terminal 12 at a predetermined position against the crimp members 21a, 21b. The rear end face of a rubber plug 10 in a state in which the wire 11 is fitted in the positioning slot 26 of a rubber plug positioning member 25 so as to position the rubber plug 10 at a predetermined position against the crimp member 21a, 21b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire terminal crimping method and a terminal crimping device for crimping an electric wire to which a stopper body such as a rubber stopper is attached to a connecting terminal, and more particularly to a connecting terminal, an electric wire and a stopper. The present invention relates to an electric wire terminal crimping method and a terminal crimping apparatus in which a body is placed at a predetermined position and a connecting terminal is crimped to an electric wire.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, an electric wire 41 having a rubber plug 40 attached thereto has a connecting terminal 42 crimped to a tip end and a covered end portion of which a core wire is exposed.
It is inserted into a predetermined mounting hole 44 of the housing 43 from the tip of 2. At this time, the rubber plug 40 is pressed against the inner surface of the mounting hole 44 of the housing 43, so that the sealability of the connection terminal 42 and the electric wire 41 is ensured.

As shown in FIGS. 6 and 7, in a conventional wire terminal crimping device 45, the tip end of the wire 41 having the rubber plug 40 attached to which the core wire is exposed and the covered end portion are connected to each other.
It is pressure-bonded to 2. In this terminal crimping device 45, the connection terminal 42 is provided with a pair of upper and lower crimping members 46a, 46b.
An electric wire / terminal positioning member 47 for positioning the electric wire / terminal at a predetermined position is provided. These crimping members 46a and 46b
Is composed of an upper crimping member 46a called an “applicator” that can move up and down, and a lower crimping member 46b called an anvil that is fixed below the upper crimping member 46a. The pressing force is applied from the above to plastically deform the crimped portion, so that the electric wire 41 is crimped and connected to the connection terminal 42.

At this time, the electric wire / terminal positioning member 47 is
The end of the core wire at the tip of the electric wire 41 inserted into the connection terminal 42 is brought into contact with one side surface 48, and the rear end of the connection portion of the connection terminal 42 is brought into contact with the other side surface 49. 42 is positioned at a predetermined position with respect to the crimping members 46a and 46b.

[0005]

In the above-described conventional terminal crimping device 45, the electric wire 41 and the connection terminal 42 are connected to each other by the crimping member 4
6a and 46b are positioned, and the rubber plug 40 cannot be positioned. Therefore, as shown in FIG. 5, when the connection terminal 42 is fitted into the mounting hole 44 of the housing 43, it is located between the rear end portion of the rubber plug 40 in the fitting direction and the opening end surface of the mounting hole 44 of the housing 43. There is a problem that the housing cavity 50 is generated, water is accumulated in the housing cavity 50, and the waterproof property is impaired.

Therefore, as shown in FIG. 4, the rear end portion of the rubber plug 10 in the inserting direction is set to be longer than usual so that when the connecting terminal 12 is inserted into the mounting hole 31 of the housing 30, The rear end portion of the rubber plug 10 projects from the open end surface of the housing 30, so that the housing cavity can be prevented from being generated.

However, in order to allow the rear end portion of the rubber plug 10 to protrude from the opening end surface of the mounting hole 31 of the housing 30 by a predetermined amount, the dimension L of the connection terminal 12, the electric wire 11 and the rubber plug 10 having a predetermined positional relationship. (See FIG. 3) must be a predetermined value. That is, since the amount of protrusion of the rubber plug 10 from the opening end surface of the mounting hole 31 of the housing 30 is closely related to the sealing property, the connection terminal 12, the electric wire 11 and
It is necessary to strictly control the positional relationship and the dimension L of the rubber plug 10.

An object of the present invention is to provide a terminal crimping method and a terminal crimping device for an electric wire, which can establish a predetermined positional relationship between a connection terminal, an electric wire crimped to the connection terminal, and a plug body attached to the electric wire. To provide.

[0009]

The above object of the present invention is to provide a terminal crimping method for an electric wire, in which an elastic plug is attached to an electric wire, and a connection terminal is crimped to the plug. This can be achieved by a method for crimping a terminal of an electric wire, characterized in that a positioning means for determining the position of the stopper is provided. Further, in the above-described electric wire terminal crimping method, the positioning is performed by the positioning means when the connection terminal and the plug are set.

The above object of the present invention is to provide a terminal crimping device for an electric wire in which an elastic plug body is attached to an electric wire and a connection terminal is crimped to the plug body, and a predetermined position of the plug body from the tip of the connection terminal is fixed. This can be achieved by an electric wire terminal crimping device characterized in that the stopper positioning member for determining is provided in the vicinity of a pair of upper and lower crimping members for crimping the electric wire at a predetermined position of the connection terminal. Further, in the wire terminal crimping device described above, the tip of the wire inserted into the connection terminal is brought into contact with one side surface, and a predetermined portion of the connection terminal is brought into contact with the other side surface facing the side surface. There is provided an electric wire / terminal positioning member for positioning the electric wire and the connection terminal at a predetermined position with respect to the crimping member. Further, in the above-described electric wire terminal crimping device, a positioning groove into which the electric wire of the plug positioning member is fitted is provided at a predetermined position on the base portion. Further, in the above-described electric wire terminal crimping device, at least a rear portion of the positioning groove has a lateral width corresponding to an electric wire diameter smaller than an outer diameter of the plug body.

In the terminal crimping device according to the present invention, the plug body positioning member for determining the predetermined position of the plug body from the tip of the connection terminal is provided near the pair of upper and lower crimping members for crimping the electric wire to the predetermined position of the connection terminal. It is provided. Therefore, the stopper body positioning member can accurately position the predetermined position of the stopper body with respect to the crimping member by bringing the rear end portion of the stopper body attached to the electric wire into contact. Further, a positioning groove for fitting the electric wire of the plug positioning member is provided at a predetermined position on the base portion, and at least a rear portion of the positioning groove corresponds to an electric wire diameter smaller than the outer diameter of the plug. It has a width. Therefore, when the electric wire with the plug attached is fitted in the positioning groove and then pulled backward, the rear end of the plug comes into contact with the front end of the positioning groove, so that the plug and the connection terminal can be easily crimped. Can be positioned in place with respect to.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an electric wire terminal crimping device of the present invention will be described in detail below with reference to FIGS. 1 is a schematic perspective view showing an embodiment of an electric wire terminal crimping device according to the present invention, FIG. 2 is a schematic perspective view of a main part in FIG. 1, and FIG. 3 is a perspective view showing a crimping completed state of a connection terminal in FIG. FIG. 4 and FIG. 4 are partial cross-sectional views of the connection terminal in a state of being fitted and inserted in the housing in FIG.

As shown in FIGS. 1 and 2, the terminal crimping device 20 of this embodiment is called an "applicator" which vertically moves an electric wire 11 to which a rubber stopper 10 having a required elasticity is attached. The upper crimping member 21a and the other lower crimping member 21b called "anvil" which is fixedly arranged at a lower position of the upper crimping member 21a plastically deform the caulking portions 14 and 15 of the connection terminal 12 to thereby form an electric wire. The exposed core wire portion 13 and the rubber caulking portion 16 of 11 are simultaneously pressed. At this time, the electric wire 11 and the connection terminal 12 are positioned by the electric wire / terminal positioning member 22, and the rubber plug 10 is positioned by the rubber plug positioning member 25 as a positioning means. The positioning procedure will be described in detail later.

The crimping members 21a and 21b are the wires 11
The electric wire 11 is automatically positioned at a predetermined position of the connection terminal 12 by plastically deforming the core wire portion 13 of the connection terminal 12 by the core wire crimping portion 14 and the rubber crimping portion 16 by the wire covering crimping portion 15. It is to be crimped.

The electric wire / terminal positioning member 22 is arranged at a predetermined position with respect to the crimping members 21a and 21b. The electric wire / terminal positioning member 22 has one side surface 23 with which the tip of the core wire portion 13 of the electric wire 11 inserted on the connection terminal 12 is brought into contact with the side surface 23, and has a front-back relationship with the side surface 23.
2 and the other side surface 24 that abuts the abutting portion 17 formed on the upper surface of 2. The electric wire / terminal positioning member 22 can accurately position the electric wire 11 and the connection terminal 12 at predetermined positions with respect to the crimping members 21a and 21b.

The rubber plug positioning member 25 is located at a position facing the electric wire / terminal positioning member 22 and is located at the crimping members 21a, 2a.
It is arranged at a predetermined position near 1b. The rubber plug positioning member 25 has a protruding piece 25b in which a U-shaped positioning groove 26 is formed at a predetermined position on the base portion 25a. When the electric wire 11 is moved downward (in the direction of arrow A) and fitted in the U-shaped positioning groove 26, the electric wire 11 is moved rearward (in the direction of arrow B), so that the diameter of the electric wire 11 is larger than the diameter of the electric wire. The rear end surface of the rubber plug 10 abuts on the protruding piece 25b. As a result, the rubber plug 10 and the electric wire 11 are sandwiched between the electric wire / terminal positioning member 22 and the rubber plug 10 is positioned at a predetermined position in the longitudinal direction of the electric wire 11.

A procedure for positioning the terminal crimping device 20 having the above-described structure will be described. As shown in FIGS. 1 and 2, the connection terminal 12 is arranged on the lower crimping member 21b in a state where the pair of upper and lower crimping members 21a and 21b are separated from each other. Then, the electric wire / terminal positioning member 22 descends from above the connection terminal 12 to a predetermined position, and the contact portion 17 of the connection terminal 12 abuts on the side surface 24 of the electric wire / terminal positioning member 22. Is positioned.

Next, the end portion of the rubber crimping portion 16 is peeled off to expose the core wire 13, and the rubber plug 10 is attached to the end portion of the rubber crimping portion 16.
The electric wire 11 to which is attached is the caulking portion 1 of the connection terminal 12.
It is arranged on 4,15. Then, the end of the core wire 13 is brought into contact with the side surface 23 of the electric wire / terminal positioning member 22, and the electric wire 11 behind the rubber plug 10 is placed in the rubber plug positioning member 2.
5 is fitted in the positioning groove 26 of the protruding piece 25b. Then, the electric wire 11 is pulled backward (in the direction of arrow B), and the rear end surface of the rubber plug 10 abuts on the protruding piece 25b, whereby the electric wire 11 and the rubber plug 10 are positioned.

Next, the upper crimping member 21a of the pair of crimping members 21a, 21b which are separated in the vertical direction descends to apply a pressing force to the crimping portions 14, 15, whereby the crimping portions 14, 15 is plastically deformed. As a result, the exposed core wire 13 of the electric wire 11 is caulked by the core caulking portion 14, and the end of the rubber caulking portion 16 is caulked by the electric wire covering caulking portion 15, so that the rubber as shown in FIG. The electric wire 11 with the stopper 10 is crimped to the connection terminal 12. Therefore, it is possible to crimp-connect the electric wire 11 to the connection terminal 12 with a constant length without any variation in the dimension length L from the tip of the connection terminal 12 to the rear end of the rubber plug 10.

Then, as shown in FIG.
Is inserted from the opening end surface of the predetermined mounting hole 31 of the housing 30, the rear end of the rubber plug 10 is always inserted from the opening end surface of the mounting hole 31 by a predetermined protrusion amount N. . Therefore, a housing cavity is not formed between the rear end portion of the rubber plug 10 and the opening end surface of the mounting hole 31, and problems such as water accumulation can be reliably prevented, and high sealing performance is ensured. can do.

As described above, according to the electric wire terminal crimping device of the present embodiment, when the electric wire 11 is crimped to the connection terminal 12 by the crimping members 21a and 21b, the electric wire / terminal positioning member 22 causes the electric wire 11 and The connection terminal 12 is positioned at a predetermined position with respect to the crimp members 21a and 21b. At the same time, the rubber plug positioning member 25 positions the rubber plug 10 at a predetermined position with respect to the crimping members 21a and 21b, so that the predetermined positional relationship between the connection terminal 12, the electric wire 11 and the rubber plug 10 is kept constant. You can That is, the dimension length L from the front end of the connection terminal 12 to the rear end of the rubber plug 10
However, since it is strictly specified in the manufacturing process, there is no variation in the dimension length L, and the occurrence of defective products can be prevented in advance.

Therefore, when the connection terminal 12 is fitted into the predetermined mounting hole 31 of the housing 30 without the need to sort defective products in the post-manufacturing inspection, after the rubber stopper 10 is inserted. The end portion may be configured to project from the opening end surface of the mounting hole 31 by a predetermined amount. Therefore, a housing cavity is not formed between the rear end portion of the rubber plug 10 and the opening end surface of the mounting hole 31, and troubles such as water accumulation can be reliably prevented, and high sealing performance is ensured. can do.

[0023]

As described above, according to the electric wire terminal crimping method and the terminal crimping apparatus of the present invention, when the crimping member crimps the electric wire to the connection terminal, the electric wire / terminal positioning member is
The electric wire and the connection terminal are positioned at a predetermined position with respect to the crimp member, and the plug positioning member positions the plug body at a predetermined position with respect to the crimp member, so that the connection terminal and the electric wire and the plug body are maintained in a predetermined positional relationship. be able to.
Therefore, when the connection terminal is fitted into the mounting hole of the housing, the rear end portion of the plug can be made to protrude from the opening end surface of the mounting hole by a predetermined amount. Therefore, a housing cavity is not formed between the rear end of the stopper and the opening end surface of the mounting hole, and it is possible to reliably prevent problems such as water retention and ensure high sealing performance. You can

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an electric wire terminal crimping device according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a main part of the terminal crimping device in FIG.

FIG. 3 is a perspective view of a connection terminal showing a state in which the electric wire in FIG. 1 is crimped.

FIG. 4 is a partial cross-sectional view showing a state in which the connection terminal in FIG. 3 is fitted and inserted in a housing.

FIG. 5 is a cross-sectional view showing a state in which the conventional connection terminal is fitted and inserted in a mounting hole of a housing.

FIG. 6 is a schematic perspective view showing a conventional terminal crimping device.

FIG. 7 is a schematic perspective view showing a main part of the terminal crimping device in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 rubber plug (plug body) 11 electric wire 12 connection terminal 14 core wire crimping portion 15 electric wire coating crimping portion 17 abutting portion 20 terminal crimping device 21a, 21b crimping member 22 electric wire / terminal positioning member 23, 24 electric wire / terminal positioning member Side surface 25 Plug stopper positioning member (rubber plug positioning member) 25a Base 25 Projection piece 26 Positioning groove 30 Housing 31 Mounting hole 50 Housing cavity L Specified length L M Width of positioning groove N Rubber stopper projection amount

Claims (6)

[Claims] 1. A terminal crimping method for an electric wire, wherein an elastic plug body is attached to an electric wire, and a connection terminal is crimped to the plug body, wherein a positioning means for determining the position of the plug body from the tip of the connection terminal is provided. A method for crimping a terminal of an electric wire, which is characterized in that 2. The electric wire terminal crimping method according to claim 1, wherein positioning is performed by the positioning means when the connection terminal and the plug are set. 3. A terminal crimping device for an electric wire, wherein an elastic plug is attached to an electric wire, and a connection terminal is crimped to the plug, wherein a plug positioning for determining a predetermined position of the plug from the tip of the connection terminal. An electric wire terminal crimping device, wherein members are provided in the vicinity of a pair of upper and lower crimping members for crimping the electric wire at a predetermined position of the connection terminal. 4. The electric wire and the electric wire inserted into the connection terminal are brought into contact with one side surface of the electric wire, and a predetermined portion of the connection terminal is brought into contact with the other side surface of the electric wire. The electric wire terminal crimping device according to claim 3, further comprising an electric wire / terminal positioning member that positions the connection terminal at a predetermined position with respect to the crimping member. 5. The electric wire terminal crimping device according to claim 3, wherein a positioning groove for fitting the electric wire of the plug positioning member is provided at a predetermined position on the base portion. 6. The terminal crimping of an electric wire according to claim 5, wherein at least a rear portion of the positioning groove has a lateral width corresponding to the electric wire diameter smaller than the outer diameter of the plug body. apparatus.