JP3247042B2 - Terminal crimping method and terminal crimping device for electric wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for crimping an electric wire for crimping an electric wire having a plug such as a rubber plug attached to a connection terminal, and more particularly to a connection terminal, an electric wire and a plug. The present invention relates to a terminal crimping method and a terminal crimping apparatus for an electric wire for crimping a connection terminal to an electric wire by disposing a body at a predetermined position.

[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 connection terminal 42 crimped to a tip end where a core wire is exposed and a covering end, and then the connection terminal 4
2 is inserted into a predetermined mounting hole 44 of the housing 43 from the front end. At this time, the rubber plug 40 is pressed into contact with the inner surface of the mounting hole 44 of the housing 43, so that the sealing properties of the connection terminal 42 and the electric wire 41 are ensured.

As shown in FIGS. 6 and 7, a conventional terminal crimping device 45 for an electric wire connects a leading end of a wire 41 to which a rubber plug 40 is attached and an exposed end of the core to a connecting terminal 4.
2 is pressed. The terminal crimping device 45 includes 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, 46b
Consists of an upper crimping member 46a, which can be moved up and down, called an "applicator", and a lower crimping member 46b, called an anvil, which is fixed below the upper crimping member 46a. The wire 41 is crimped and connected to the connection terminal 42 by applying a pressing force to plastically deform the crimped portion.

At this time, the electric wire / terminal positioning member 47 is
The end of the core wire at the front end 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, so that the electric wire 41 and the connection terminal 42 is positioned at a predetermined position with respect to the pressure bonding members 46a and 46b.

[0005]

In the conventional terminal crimping apparatus 45 described above, the electric wire 41 and the connection terminal 42 are connected to the crimping member 4.
6a and 46b, and the rubber stopper 40 cannot be positioned. For this reason, as shown in FIG. 5, when the connection terminal 42 is inserted into the mounting hole 44 of the housing 43, between the rear end of the rubber plug 40 in the insertion 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, and water accumulates in the housing cavity 50, thereby impairing waterproofness.

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

However, in order for the rear end of the rubber plug 10 to protrude by a predetermined amount from the opening end surface of the mounting hole 31 of the housing 30, the connection terminal 12, the electric wire 11, and the rubber plug 10 have a dimension L 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 face of the mounting hole 31 of the housing 30 is deeply related to the sealing property, the connection terminal 12 and the electric wire 11
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 apparatus for an electric wire capable of establishing a predetermined positional relationship between a connection terminal, an electric wire crimped to the connection terminal, and a plug attached to the electric wire. To provide.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of crimping an electric wire in which an elastic plug is attached to an electric wire and a connecting terminal is crimped to the plug.
The attached wire is positioned in a predetermined position by the terminal positioning means.
Wire is inserted into the connection terminal
It is positioned at a predetermined position by the positioning means, and
The body is positioned from the tip of the connection terminal by the stopper positioning means.
After positioning, the wire with the plug attached
It can be achieved by a terminal crimping method of the electric wire, wherein Rukoto is crimped to the connecting terminal.

An object of the present invention is to provide an electric wire terminal crimping apparatus in which an elastic plug is attached to an electric wire and a connection terminal is crimped to the plug, the electric wire being crimped at a predetermined position of the connection terminal.
A pair of upper and lower crimping members for crimping, and electric wires and connection terminals
Wire / terminal that positions the wire at a predetermined position with respect to the crimping member
Positioning member and stopper body position provided near crimping member
An electric wire having a fixing member and the plug body attached thereto,
.Positioned at a predetermined position by the terminal positioning member
Wire / terminal positioning member that is inserted onto the connection terminal
Is positioned at a predetermined position by contacting the tip with
The plug body is further moved by the plug positioning member.
After being positioned at a predetermined position from the
The electric wire can be achieved by a terminal crimping apparatus of the wire, characterized in Rukoto is crimped to the connecting terminal. Also,
In the terminal crimping apparatus for an electric wire described above, the positioning groove for fitting the electric wire of the plug positioning member is provided at a predetermined position on the base. Furthermore, in the terminal crimping device for an electric wire according to the above, at least a rear portion of the positioning groove,
It has a width corresponding to the wire diameter smaller than the outer diameter of the plug.

In the terminal crimping apparatus according to the present invention, the plug positioning member for determining the predetermined position of the plug from the tip of the connection terminal is located near the pair of upper and lower crimp members for crimping the electric wire to the predetermined position of the connection terminal. Is provided. Therefore, the plug positioning member can accurately position a predetermined position of the plug with respect to the crimping member by abutting the rear end of the plug attached to the electric wire. A positioning groove for fitting the electric wire of the plug positioning member is provided at a predetermined position on the base, 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 is fitted into the positioning groove and 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 at a predetermined position with respect to.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wire terminal crimping apparatus according to the present invention will be described below in detail with reference to FIGS. FIG. 1 is a schematic perspective view showing an embodiment of the wire terminal crimping apparatus of 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 completed crimping state of the connection terminal in FIG. FIG. 4 is a partial cross-sectional view of the connection terminal shown in FIG. 3 in a state where the connection terminal is inserted into the housing.

As shown in FIGS. 1 and 2, the terminal crimping apparatus 20 according to the present embodiment is called an “applicator” that moves an electric wire 11 to which a rubber plug 10 having required elasticity is attached in a vertical direction. The crimping parts 14 and 15 of the connection terminal 12 are plastically deformed by the upper crimping member 21a and the other lower crimping member 21b called "anvil" which is fixed and disposed below the upper crimping member 21a. The exposed core portion 13 and the rubber caulked portion 16 are simultaneously crimped. 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 positioning means. The positioning procedure will be described later in detail.

The crimping members 21a and 21b are
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 so as to be sandwiched by the core wire crimping portion 14 of the connection terminal 12 and the rubber caulking portion 16 by the wire covering caulking portion 15. It is to be crimped.

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

The rubber stopper positioning member 25 is located at a position facing the electric wire / terminal positioning member 22, and
It is arranged at a predetermined position near 1b. The rubber stopper positioning member 25 has a protruding piece 25b having a U-shaped positioning groove 26 formed at a predetermined position on a base 25a. By moving the electric wire 11 backward (in the direction of arrow B) in a state where the electric wire 11 is moved downward (in the direction of arrow A) and fitted into the U-shaped positioning groove 26, 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 contacts the protruding piece 25b. Thereby, the rubber plug 10 is positioned at a predetermined position in the longitudinal direction of the electric wire 11 such that the rubber plug 10 and the electric wire 11 are sandwiched between the electric wire / terminal positioning member 22.

A procedure for positioning the terminal crimping apparatus 20 having the above-described configuration 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 wire / terminal positioning member 22 descends to a predetermined position from above the connection terminal 12, and the contact portion 17 of the connection terminal 12 comes into contact with the side surface 24 of the wire / terminal positioning member 22. Is performed.

Next, the end of the rubber caulking part 16 is peeled to expose the core wire 13, and the rubber stopper 10 is attached to the end of the rubber caulking part 16.
Is attached to the crimping portion 1 of the connection terminal 12.
4 and 15 are arranged. The end of the core wire 13 abuts against the side surface 23 of the electric wire / terminal positioning member 22, and the electric wire 11 behind the rubber plug 10 is connected to the rubber plug positioning member 2.
5 is fitted into the positioning groove 26 of the projection 25b. Thereafter, the electric wire 11 is pulled rearward (in the direction of the arrow B) so that the rear end surface of the rubber plug 10 comes into contact with the protruding piece 25b, thereby positioning the electric wire 11 and the rubber plug 10.

Next, of the pair of crimping members 21a and 21b vertically separated from each other, the upper crimping member 21a descends to apply a pressing force to the crimping portions 14 and 15, so that the crimping portions 14 and 15 are pressed. 15 is plastically deformed. As a result, the core wire 13 of the exposed electric wire 11 is caulked by the core wire caulking portion 14 and the end portion of the rubber caulking portion 16 is caulked by the wire covering caulking portion 15, as shown in FIG. The electric wire 11 with the plug 10 is crimped to the connection terminal 12. Therefore, the wire 11 can be crimp-connected to the connection terminal 12 with a constant length without variation in the dimensional length L from the front end of the connection terminal 12 to the rear end of the rubber plug 10.

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

As described above, according to the wire terminal crimping apparatus of the present embodiment, when the wire 11 is crimped to the connection terminal 12 by the crimping members 21a and 21b, the wire / terminal positioning member 22 separates the wire 11 and the wire 11 from each other. The connection terminal 12 is positioned at a predetermined position with respect to the crimping 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 a predetermined positional relationship between the connection terminal 12, the electric wire 11, and the rubber plug 10 is ensured. Can be. That is, a dimensional 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 dimensional length L, and it is possible to prevent defective products from occurring.

Therefore, it is not necessary to sort out defective products in the inspection after the manufacture, and when the connection terminal 12 is inserted into the predetermined mounting hole 31 of the housing 30, the rear end of the rubber plug 10 is removed. The end may project from the opening end face of the mounting hole 31 by a predetermined amount. Therefore, a housing cavity does not occur between the rear end of the rubber plug 10 and the opening end surface of the mounting hole 31, and problems such as accumulation of water can be reliably prevented, and high sealing performance is secured. can do.

[0023]

As described above, according to the wire crimping method and terminal crimping apparatus of the present invention, when the crimping member crimps the wire to the connection terminal, the wire / terminal positioning member is
Since 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 at a predetermined position with respect to the crimp member, the connection terminal, the electric wire and the plug 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 of the plug can be protruded by a predetermined amount from the opening end surface of the mounting hole. Therefore, a housing cavity does not occur between the rear end portion of the plug and the opening end surface of the mounting hole, and problems such as accumulation of water can be reliably prevented, and high sealing performance can be ensured. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an electric wire terminal crimping apparatus 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 crimped state of the electric wire in FIG. 1;

FIG. 4 is a partial cross-sectional view showing a state where the connection terminal in FIG. 3 is inserted into a housing.

FIG. 5 is a cross-sectional view showing a state where a conventional connection terminal is inserted into 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. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rubber plug (plug) 11 Electric wire 12 Connection terminal 14 Core wire crimping part 15 Wire covering crimping part 17 Contact part 20 Terminal crimping device 21a, 21b Crimp member 22 Wire / terminal positioning member 23, 24 Wire / terminal positioning member Side surface 25 plug positioning member (rubber plug positioning member) 25a base 25 projecting piece 26 positioning groove 30 housing 31 mounting hole 50 housing cavity L predetermined dimension length M positioning groove width N

Claims (4)

(57) [Claims] 1. A method of crimping an electric wire in which an elastic plug is attached to an electric wire and a connection terminal is crimped to the plug, wherein the electric wire with the plug attached is a terminal positioning hand.
On the connection terminal positioned at a predetermined position by the step
Inserted and in place by wire positioning means
Is positioned, and the plug is positioned by plug positioning means.
To a predetermined position from the tip of the connection terminal.
Thereafter, the electric wire having the plug attached thereto is pressed against the connection terminal.
Wearing by a terminal crimping method of the electric wire, wherein Rukoto. 2. An electric wire having an elastic plug attached thereto.
Terminal crimping device for an electric wire in which a connection terminal is crimped to the plug body
The upper and lower ones for crimping the electric wire to a predetermined position of the connection terminal.
Crimping the pair of crimp members, the wire and the connection terminal
Wire / terminal positioning to be positioned at a predetermined position relative to the member
And a stopper body positioning member provided near the crimping member.
And the electric wire having the plug body attached thereto.
Is positioned at a predetermined position by the electric wire / terminal positioning member.
It is inserted into the fixed connection terminal and
By contacting the tip with the wire / terminal positioning member
The plug is positioned at a predetermined position, and the plug is further positioned at the plug position.
Positioned at a predetermined position from the tip of the connection terminal
After being positioned, the electric wire to which the plug is attached is
A terminal of an electric wire characterized by being crimped to the connection terminal
Crimping device. 3. The fitting of the electric wire of the plug positioning member.
Positioning groove is provided at a predetermined position on the base
3. A terminal crimping device for an electric wire according to claim 2, wherein
Place. 4. At least a rear portion of the positioning groove.
However, the side corresponding to the wire diameter smaller than the outer diameter of the plug body
The electric wire according to claim 3, wherein the electric wire has a width.
Terminal crimping equipment.