JPH047593Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a device for connecting an electric wire to a terminal by inserting the core part of the electric wire into a pin-shaped terminal having an axial core insertion hole at the rear end. It is related to.

[Prior Art] Conventionally, for example, in a pin-shaped terminal called a German pin, after inserting the core part of the electric wire into the core wire insertion hole provided at the rear end, it was possible to fix the electric wire by crushing it with a crimper. It is desirable to automate all of these tasks, starting with the wire terminal processing. However, when a pair of pin-shaped terminals are fixed at a considerable distance from each other like a German pin, and the ends of split electric wires are inserted into each core wire insertion hole at the same time, the core wires Since the insertion hole has a small diameter, it is difficult to insert the end portion while holding it at a predetermined interval, and there are technical difficulties in automating the insertion work.

[Purpose of the invention] The purpose of the invention is to insert an electric wire into an automated terminal that can simultaneously insert and crimp the end portion of an electric wire split into two or more into the core wire insertion hole of a pin-shaped terminal. The goal is to provide devices that connect.

[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
It has a core wire guide portion for inserting a plurality of split core wire portions of the electric wire into core wire insertion holes provided at the rear end portions of the plurality of pin-shaped terminals, and the core wire guide portion has two core wire guide portions that are opened and closed mutually. The guide members are divided into guide members, and each of these guide members has a tapered surface that combines a plurality of tapered guide holes that guide the core wire portion in a mutually closed state. a clamper that crushes the core wire insertion hole with the core wire inserted into the core wire insertion hole of the pin-shaped terminal and crimps the electric wire to the pin-shaped terminal; This is a device for connecting an electric wire to a terminal, characterized by comprising a pin holding member that presses the pin holding member, and a driving means that drives the pin holding member.

[Embodiments of the invention] The invention will be described in detail based on illustrated embodiments.

FIG. 1 is a plan view showing essential parts of the device according to the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a plan view seen from the direction of arrow A in FIG. 2.

In the drawing, 1 is a wire chuck part, and the terminal parts Ca and Ca' of the electric wire C held by this chuck part 1 are split into two, and the split terminal parts Ca and Ca' are separated into two parts. The insulating film is removed from the tip of each terminal part Ca, Ca' to expose the respective core wire part Cb, Cb', and the core wire part Cb, Cb consisting of many thin wires is expanded. ' is twisted to prevent it from unraveling.

By the time this electric wire C takes on this form,
As shown in Figure 4a, the tip coating of the terminal parts Ca and Ca'
Step of removing Cc, as shown in b, terminal part Ca,
A step of separating the insulating film Ce, Ce′ of Ca′, and further c
As shown in d, the terminal portions Ca and Ca′ are widened at appropriate intervals while the insulation coatings Ce and Ce′ are attached, and as shown in d, the insulation coatings Ce and Ce′ are completely removed, and at the same time, the core wire portion is expanded. The process of twisting Cb and Cb' is performed in the same device.

In this way, the electric wire C, whose terminal parts Ca and Ca' are split, is held by the electric wire chuck part 1 while being placed on the electric wire receiving plate 2, as shown in FIG.
It is moved forward in the direction of arrow A. In the A direction, there is a terminal part Ca,
Core wire guide part 3 that guides core wire parts Cb and Cb' of Ca′
is located. As shown in FIG. 2, this core wire guide section 3 is divided into a guide member 4 located on the upper side and a guide member 5 located on the lower side. Tapered surfaces 8a and 8b that combine the two tapered guide holes 7 when their upper ends are butted against each other.
are placed side by side at appropriate intervals.
Further, since it is necessary to separate the two guide members 4 and 5 after the terminal is crimped, both or at least one of them can be moved vertically in FIG. 2 so that they can be opened and closed with each other. In the illustrated embodiment, the lower guide member 5 is fixed, and the upper guide member 4, which is fixed to the mounting plate 9, is pulled up to the position of the imaginary line 4'. Figures 5 and 6
The figures are a front view and a cross-sectional view showing a state in which the guide members 4 and 5 are mutually open, and 8c and 8d indicate portions forming the exit of the tapered guide hole 7.

At the narrowed exit side of the tapered guide hole 7, which is formed when the guide members 4 and 5 are mutually closed, two conductive metal pieces are held at an appropriate interval by a synthetic resin bridge part B. The rear end portions Aa and Ab of the pin-shaped terminals Pa and Pb made of aluminum are transported and placed each time the electric wire C is crimped. As described above, core wire insertion holes H shown by dotted lines are provided in the axial direction at the rear end portions Aa and Ab of these pin-shaped terminals Pa and Pb, through which the pin-shaped terminals Pa and Pb are conveyed. Then, the entrance of the core wire insertion hole H and the exit of the tapered guide hole 7 are aligned. A terminal member P consisting of a bridge portion B and pin-shaped terminals Pa and Pb is connected to a pin holding member 1 driven by an air cylinder 11.
2, the rear ends Aa and Ab of the pin-shaped terminals Pa and Pb
are pressed against the core wire guide portion 3, and the rear end portions Aa, Ab of the pin-shaped terminals Pa, Pb are crushed by the crimper 13. Note that 14 is the rear end of pin-shaped terminals Pa and Pb when the crimper 13 is activated.
An anvil for receiving Aa and Ab, 15 is an anvil spacer whose shape is shown in FIG. 7, and holds the terminal member P in a predetermined position, and 16 is a holder for the terminal member P.

8 and 9 show an example of a mechanism for moving the guide member 4 up and down, 21 is a support lever, 22 is a bushing housing mounting plate, 23 is a bushing housing, 24 is a slide shaft, and 25 is an air cylinder. , 26 is a cylinder extension rod, 27 is a one-touch joint for connecting a fluid pipe, 28 is a bush, 29 is a bridge holder for holding down the bridge part B of the terminal member P, 30 is a bridge holder cover,
31 is a spring.

The mounting plate 9 of the guide member 4 is pushed down by an air cylinder 25 to close the guide members 4 and 5, and the upper end of the guide member 5 is placed on the stepped portion 6 of the pushed down guide member 4. When inserted, two tapered guide holes 7 are formed by the tapered surfaces 8a and 8b of the guide members 4 and 5. In this state, as shown in FIG.
If the wires are moved forward and inserted into the large diameter side of the taper guide hole 7, the twisted core wire portions Cb,
Cb' is guided by the taper guide hole 7, and from the small diameter exit, the pin-shaped terminal Pa, the rear end part Aa of Pb,
It is inserted into the core wire insertion hole H of Ab. Then, the rear ends of the pin-shaped terminals Pa and Pb are crimped by the crimper 13.
After crushing Aa and Ab and crimping the core wire parts Cb and Cb', if the guide member 4 is raised, the guide members 4 and 5 will be separated, and the terminal member P to which the electric wire C is connected can be easily obtained. can.

Note that even if the electric wire C is split into two or more branches, this can be easily handled by increasing the number of tapered guide holes 7.

[Effects of the invention] As explained above, the device for connecting electric wires to terminals according to the present invention connects the terminal parts of a plurality of split electric wires to the core wires provided at the rear ends of the plurality of pin-shaped terminals. Since the wires can be inserted into the insertion hole and crimped at the same time, the wire connection work can be automated and mass productivity can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of a device for connecting an electric wire to a terminal according to the present invention, in which FIG. 1 is a plan view of the main part, FIG. 4 is an explanatory diagram of the wire end treatment process, FIG. 5 is a front view with the upper and lower guide members open, and FIG. 6 is a sectional view taken along the - line in FIG. 5. Figure 7 is a front view of the anvil spacer, Figure 8
The figure is a front view of the opening/closing mechanism of the guide member, and FIG. 9 is a right side view thereof. 1 is the electric wire chuck part, 3 is the core wire guide part,
4 and 5 are guide members, 6 is a stepped portion, 7 is a tapered guide hole, 9 is a mounting plate, 12 is a pin holding member, 13 is a crimper, C is an electric wire, Cb and Cb' are core wire portions, B is a bridge portion, Pa and Pb are pin-shaped terminals, Aa and Ab are rear ends, and H is a core wire insertion hole.

Claims (1)

[Scope of utility model registration request] It has a core wire guide portion for inserting a plurality of split core wire portions of the electric wire into core wire insertion holes provided at the rear end portions of the plurality of pin-shaped terminals, and the core wire guide portion has two core wire guide portions that are opened and closed mutually. The guide members are divided into guide members, and each of these guide members has a tapered surface that combines a plurality of tapered guide holes that guide the core wire portion in a mutually closed state. a clamper that crushes the core wire insertion hole with the core wire inserted into the core wire insertion hole of the pin-shaped terminal and crimp the electric wire to the pin-shaped terminal; 1. A device for connecting an electric wire to a terminal, comprising: a pin holding member that presses the pin holding member; and a driving means that drives the pin holding member.