JPH0528708Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a device for connecting a bare end of a covered electric wire with the sheath removed by crimping a cylindrical portion of a terminal for electrical connection. .

<Prior art> Conventionally, this type of terminal connecting device has a terminal in a position where it is fitted onto the bare end of an electric wire, and the electric wire is placed between terminal crimping jigs as a holder for the terminal, and is then placed between terminal crimping jigs. Therefore, the cylindrical portions of the terminals were crimped and connected.

At present, the fitting of the terminal to the end of the electric wire and the supply of the terminal between the terminal crimping jigs are performed manually.

<Problem to be solved by the invention> Therefore, since the conventional terminal connection means of this type relied on human labor, the problem was that it was not relatively efficient and had to be expensive. It was hot. However, in addition to this, as with most terminals of this type, it is important to uniformly crimp the seam (joint using silver solder) of the cylindrical part of the terminal where the wire is connected as the center of pressure. was difficult.

If the pressure is not applied uniformly around the seam, that is, if the direction and position of the pressure is not correct around the seam, the clamping force on the wire will decrease. In some cases, the seam part was destroyed, causing abnormal heat generation when energized, or the wires came off, making it impossible to energize.

Therefore, in order to solve such conventional problems, the present invention automatically and mechanically clamps the head of the terminal, and furthermore, changes this mechanical clamping position to the completion of the pressurized deformation of the terminal by the crimping jig. By holding the terminal all the way down, you can always crimp the terminal in a uniform position and posture and connect it to the wire. By providing a press die, it is possible to select the appropriate press die according to the dimensions of the terminal with a simple operation, thereby simplifying the preparation and management of a wide variety of terminal crimping jigs, and making mechanical operations easier. This is the main purpose.

<Means for Solving the Problems> The configuration of the present invention for achieving the object will be explained using drawings corresponding to embodiments. , a terminal holding body 2 consisting of two plates 2a and 2b that rotate reciprocatingly around the central rotation axis 1 and whose tips open and close.
, a terminal supply device C disposed on one side of the base 11, and a retractor located outside the terminal supply device C to press the cylindrical portion s of the terminal T toward the terminal holding body 2 side. The flexible terminal pressing body 3 and the arrangement position of the terminal pressing body 3 are at positions that are phased by about 90° angle or about 180° angle in plan view with respect to the central axis 1,
In addition, it is constituted by terminal crimping jigs 4 and 5 consisting of a fixed jig 4 having a pressurizing part formed at the same height position as the terminal pressing body 3 and a movable jig 5, and the movable jig 4 , 5 A cam roller 5c attached to a connecting portion of two sets of upper and lower levers 5d and 5e connected in a dogleg shape is moved up and down by slidingly contacting a cam 5b attached to a rotating shaft 5a. Furthermore, each of the terminal crimping jigs 4 and 5 has a disk shape and has a plurality of press dies 4a..., 5a... of different sizes on the circumferential surface, and these press dies can be selectively operated. Terminal crimping jigs 4 and 5 are rotatably attached to the respective holders 12 and 13 so that the terminal crimping jigs 4 and 5 can be used for the terminal crimping, and a stopper mechanism 15 that elastically fixes the terminal crimping jigs at the terminal crimping position. This is a configuration in which the following is provided.

<Function> Since the present invention is constructed as described above, the terminal pressing body 3 disposed on the outside of the terminal supplying device C is operated to protrude, and the terminal holding body 2 is made rotatable about the rotation center axis 1. The terminal T of the terminal supplying device C is moved and supplied to the terminal, the head t of the terminal is clamped, and the clamped terminal T is moved between the terminal crimping jigs 4 and 5 by the rotation of the clamping body 2. After the electric wire end k is inserted into the terminal cylindrical part s by the automatic insertion device, the cylindrical part s is crimped and deformed while the terminal T is held by the clamping body 2.

<Examples> Examples of the present invention will be described below based on the drawings.

The terminal connected to the end of the electric wire according to the present invention includes:
There are two types: one in which an insulating sleeve is fitted to the outer periphery of the crimp cylinder, and the other in which the insulating sleeve is not fitted. The embodiment of the present invention deals with the latter type of bare terminal.

FIG. 1 to FIG. 4 are diagrams showing an embodiment of the present invention, and are diagrams each explaining each step over time.

For convenience of explanation, the main devices will be explained first.

As shown in FIG. 1, a rotation center shaft 1 is provided on a base 11, and two plates 2 are mounted on the top of the rotation center shaft 1.
A terminal holding body 2 consisting of a and 2b is rotatably mounted, and on one side of the base 11 and outside the holding body 2, a large number of through holes c are formed in a continuous chain shape at predetermined intervals. are formed, and each through hole c
. . . Terminal feeding device C using a terminal feeding band C ₃ into which the cylindrical portion s of a bare terminal T is inserted and transferred by a terminal feeding mechanism C ₁ and a guide groove body C ₂ shown in FIG. 5, which will be described later. Further, on the outside of the terminal supply device C, there is disposed a terminal pressing body 3 which is supported by a support base 3a and is movable in and out for pressing the cylindrical portion s of the terminal T toward the terminal holding body 2 side. , the arrangement position of the terminal pressing body 3 is approximately approximately 100 mm with respect to the rotation center axis 1 in a plan view position.
Terminal crimping jigs 4 and 5, each consisting of a fixed jig 4 and a movable jig 5, each having a pressurizing part formed at a position 90° angularly phased and at the same height as the terminal pressing body 3, are arranged;
It is constructed by arranging a wire holder 6 outside of the terminal and inserting the wires K into the cylindrical portion s of the terminal T one after another.

The terminal crimping jigs 4 and 5 have a disk shape, and two press molds 4a, 4a, 5a, 5a having different sizes are provided on the circumferential surface of the jigs 4a, 5a, 5a and 5a, respectively, at an appropriate interval. Then, in order to be able to selectively use these press dies, the rotating shaft 14,
It is attached so that it can rotate around 16. Further, a stopper mechanism 15 is provided which elastically fixes the terminal crimping shafts 4 and 5 at the terminal crimping position. This stopper mechanism 15 has a ball 15 that is constantly pressed outward by a spring 15a.
b is a recess 4 formed on the peripheral surface of the terminal crimping jigs 4 and 5;
b, 5b by elastically fitting. Therefore, when it is desired to rotate the terminal crimping jigs 4 and 5 according to the dimensions of the terminal T, the balls 15b
It is only necessary to rotate the disc-shaped terminal crimping jig with a torque exceeding the fitting force of , and by doing so, a mold of a desired size can be easily set without using any tools.

The stopper mechanism 15 may be fitted into recesses 4b and 5b formed on the back surfaces of the disc-shaped terminal crimping jigs 4 and 5 as shown in FIG. Terminal crimping jig 4
Recesses 4 formed in rotating shafts 14 and 16 of b and 5b
b, 5b may be fitted.

Further, the embodiment shown in FIGS. 5 to 9 shows the apparatus of the embodiment together with a specific movement mechanism. As shown in FIGS. 5 and 6, the entire apparatus is compact enough to be carried by one operator. A cam cylinder shaft 7 is provided upright on the side of the central shaft 1, and three cams 7a, 7b, 7c, ie, first, second, and third cams, are formed protruding from the outer periphery of the shaft. (See Figures 7 to 9).

The first cam 7a in the upper stage contacts the cam roller 9a of the fan-shaped lever 8a, and moves the terminal transfer mechanism C1 through the lever 8d, the feed pawl 8e, and the ratchet gear _C4 (indicated by chain lines in FIG. ₅ ). Rotate by the tooth. The second cam 7b in the middle comes into contact with a cam roller 9b attached to the rear end of the upper plate 2a of the terminal holding body 2, and moves the terminal holding body 2 by 90 degrees.
Cam 7c Cam roller 9 of dogleg lever 8c
c, and the terminal pressing body 3 is moved to protrude via the moving rod 3c.

On the other hand, the rotational force of the motor M is transmitted through the passive theory 7A,
A rotary cam 1c mounted on the upper surface of the gear 1b is rotated through a passive shaft 7B passing through the center of the cam cylinder shaft 7, a gear 1a mounted below the passive shaft 7B, and a gear 1b mounted on the central shaft 1. A cam roller 2c (see FIG. 8) attached to the rear of the lower plate 2b of the terminal holding body 2 is brought into contact with the cam surface, and the tip of the lower plate 2b is moved in the opening direction with respect to the upper plate 2a. to open the terminal holding body 2 (see Fig. 1).

The movable jig 5 in the terminal crimping jig is driven by connecting the rotational force of the motor M in a dogleg shape via a cam 5b attached to a rotating shaft 5a, as shown in FIGS. 5 and 6. Two upper and lower levers 5d, 5
The signal is transmitted to the cam roller 5c attached to the connecting part of e, and the vertically movable table 5f is moved downward against the force of the spring 5g. The terminal supply band
A reel wound with C ₃ is shown.

To explain how to attach a terminal to the end of a wire using the terminal attaching device formed as described above, turn on the power switch to rotate the motor M, and as shown in FIG. With its tip end open, the head t of the terminal T inserted into the terminal supply band C ₃ is held in a standby position, and then the cylindrical portion s of the terminal T to be held is placed in the above position as shown in FIG. By the protruding movement of the terminal pressing body 3, the terminal T is pressed and moved toward the terminal clamping body 2 side, and the head t of the terminal T is clamped with the tip of the terminal clamping body 2 in a closed position, Next, the terminal clamping body 2 is rotated by 90° to the position shown in FIG. 3 about the central axis of rotation 1, thereby transferring the cylindrical portion s of the clamped terminal T between the terminal crimping jigs 4 and 5. Next, the wire receiver 6 is moved forward in the direction of the arrow to insert the bare end k of the wire K into the cylindrical portion s of the terminal T, and then the terminal crimping jigs 4 and 5 are inserted as shown in FIG.
The movable jig 5 is moved downward to deform the cylindrical portion s of the terminal T under pressure by the upper and lower crimping jigs 4 and 5. Although not shown in the drawings, the tip of the terminal holding body 2 is subsequently opened. After releasing the terminal T that was held as a posture,
The holding body 2 is rotated about the rotation center axis 1 to restore the terminal holding position shown in FIG.

This process is repeated in sequence to attach the terminal T to the end of the electric wire K.

In the above embodiments, the terminal T is shown in which the cylindrical portion s is not coated, but as is generally known, a terminal in which an insulating coating tube is fitted onto the cylindrical portion s is used. It will be readily understood that the same apparatus and method can be used in both cases. Furthermore, the terminals T do not necessarily have to be temporarily held by the terminal supply band _C3 mentioned in the above embodiment, and may be directly supplied to the standby position of the terminal holding body 2 by the terminal supply device C. good. Further, the operation of inserting the electric wire K into the cylindrical portion s of the terminal T held by the terminal holding body 2 may be performed manually. In addition, the types of terminals T are not limited to the round terminals shown in the embodiments, that is, those in which the head t of the terminal T is round, and include, for example, U-shaped terminals, U-shaped terminals, and rod-shaped terminals. The terminal may be of any other shape, such as a faston type terminal or the like.In short, any terminal having a shape having a cylindrical portion s into which the end portion of the electric wire is inserted may be used.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure of these embodiments, and the present invention is not necessarily limited to the structure of these embodiments. It can be implemented with appropriate modification within the scope of achieving the following effects.

<Effects of the invention> As is already clear from the above explanation, the invention has the following effects:
Since the terminal clamping body is opened and closed, and the cylindrical part of the terminal is held by the terminal pressing body to supply the terminal to the terminal clamping body, the attitude of the terminal in the cylindrical axis direction with respect to the terminal clamping body is can be kept in a constant posture by the terminal pressing body, and when the head of the terminal is held by the terminal clamping body, the circumferential posture of the terminal can always be maintained in a constant posture by the closing action of the terminal clamping body. Therefore, the holding position of the terminal by the terminal holding body is always kept constant in the circumferential direction, axial direction, and front and back directions of the terminal, and the terminal is transferred to the pressurizing part of the terminal and applied with the pressurizing jig. Since it is possible to apply pressure, uniform wire connections can be made at all times.

In addition, in the present invention, a plurality of press dies of different sizes are provided on the circumference of each disc-shaped terminal crimping jig, and the terminal crimping jig is attached to each holder so that these press dies can be selectively used. Since the terminal crimping jig is rotatably attached at the terminal crimping position and is provided with a stopper mechanism that elastically fixes the terminal crimping jig at the terminal crimping position, there is no need to go to the trouble of changing the terminal crimping jig for terminals of different sizes.
By simply rotating this, you can select the press die that corresponds to the terminal to be crimped. This eliminates the need to prepare and manage a wide variety of terminal crimping jigs, making mechanical operations easier and reducing costs. It has remarkable effects such as being able to reduce the amount of

Furthermore, in the present invention, the movable jigs 4 and 5 are formed by two sets of upper and lower levers 5d and 5e connected and formed in a dogleg shape.
Since the cam roller 5c attached to the connecting portion of the terminal is configured to move up and down by sliding it in contact with the cam 5b attached to the rotating shaft 5a, it is possible to effectively achieve delicate crimping adjustment over time during terminal crimping. In addition, it is possible to simplify the structure and reduce costs.

[Brief explanation of drawings]

In the figure, Figs. 1 to 4 are perspective views of the main parts of the device for attaching a terminal to the end of an electric wire according to the present invention over time, and Figs. 5 and 6 show the entire device of the present invention. A partially cutaway front view and a side view, Figs. 7 to 9 are a plan view, a front view and a side view showing the main parts of the device, Fig. 10 is an enlarged front view of the terminal crimping jig, and Fig. 11 12 and 13 are sectional views similar to FIG. 11 showing other embodiments of the stopper mechanism in the terminal crimping jig, respectively. In the figure, 1 is a rotation center axis, 2 is a terminal holding body, 3 is a terminal pressing body, 4 is a fixed jig, 5 is a movable jig, 4a,
5a is a press mold, 11 is a base, 12 and 13 are holders, 15 is a stopper mechanism, C is a terminal supply device,
K is a covered electric wire, k is a bare electric wire part, T is a terminal, t is a head part, and s is a cylindrical part.

Claims (1)

[Scope of utility model registration request] A terminal holding body 2 consisting of a rotation center shaft 1 projected above a base 11 and two plates 2a and 2b that rotate reciprocatingly around the rotation center shaft 1 and whose tips open and close.
, a terminal supply device C disposed on one side of the base 11, and a retractor located outside the terminal supply device C to press the cylindrical portion s of the terminal T toward the terminal holding body 2 side. The flexible terminal pressing body 3 and the arrangement position of the terminal pressing body 3 are at positions that are phased by about 90° angle or about 180° angle in plan view with respect to the central axis 1,
The terminal crimping jigs 4 and 5 are constituted by a fixed jig 4 and a movable jig 5. The movable jig 5 Two upper and lower levers 5 connected in a dogleg shape
Cam roller 5c attached to the connecting part of d and 5e
is configured to move up and down by slidingly contacting a cam 5b mounted on a rotating shaft 5a, and furthermore, each of the terminal crimping jigs 4 and 5 has a disk shape, and has a size mark on its circumferential surface. Multiple different molds 4
a..., 5a..., terminal crimping jigs 4, 5 are rotatably attached to the respective holders 12, 13 so that these press dies can be used selectively, and A device for attaching a terminal to an end of an electric wire, which is provided with a stopper mechanism 15 for elastically fixing the terminal crimping jig at a certain position.