JP2000260290A - Continuous body of pressure contacting fuses and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure contacting fuse to allow pressure contacting operation by automating the operation. SOLUTION: A pressure contacting fuse 1 is manufactured by introducing such an arrangement that a plurality of fuses are installed in ladder form on a pair of carriers 8 in parallel arrangement. The pressure contacting fuses 1 are coupled with the carriers 8 at a constant pitch, and the carriers 8 are formed undulate by a bending part 19 folded and bent in accordance with the pitch. A head 15 to perform separation and pressure contact of the fuse 1 is installed in the direction perpendicularly intersecting the carrier feeding direction. The head 15 sinks to perform grasp of the fuse 1, severance from the carriers 8, and pressure contacting to a terminal member 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuum of a pressure welding fuse and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, attempts have been made to mount a fuse on a press-contact portion by a press-contact operation (for example, FIG. 9 shows a press-contact fuse 100 disclosed in Japanese Patent Application Laid-Open No. Hei 9-115417). . This pressure welding fuse 100
Has a fuse pattern 102 formed on a surface of a substrate 101 formed of a synthetic resin by an etching process. Both ends of the fuse pattern 102 are
As tin 3, tin plating having a predetermined thickness (for example, 5 μm) is applied.

[0003] This pressure welding fuse 100 is
After being pressed by the pressing blade 105
It is pressed against a mounting place provided with. At this time, the pressing blade 10
5 is slightly infiltrated into the tin plating of the press-contacted portion 103, so that the press-contact fuse 100 and the press-contact blade 105 are connected.

[0004]

Since the above-mentioned pressure welding fuse 100 is manufactured and pressure-welded one by one, it is difficult to automate the process from manufacturing to pressure welding.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a continuum of pressure welding fuses that can be pressure-welded by automation and to provide a method of manufacturing the continuity. It is in.

[0006]

According to a first aspect of the present invention, there is provided a continuous body of a pressure welding fuse according to the first aspect of the present invention, which is formed of a conductive plate and is blown by an overcurrent. A pressure-fusing fuse provided with a pair of pressure-contacting portions provided at both ends of the pressure-fusing fuse, which is provided at a fixed pitch in such a manner that the pressure-fusing fuse is separably erected between a pair of parallel carriers. Is characterized in that the pressed portion is attached to the carrier in a posture oriented in a direction substantially orthogonal to the feed direction of the carrier, and the mounting direction of the pressed portion is the same as the working direction at the time of pressing. And

According to a second aspect of the present invention, in the first aspect, the both carriers are formed with a wave-shaped bent portion which is repeated at a pitch equal to the pitch at which the pressure welding fuses are attached. The press-contact fuse is attached to each of the bent portions in a posture facing the same direction as the direction in which the press-contacted portion is pressed.

According to a third aspect of the present invention, there is provided a method for manufacturing a continuous body of a pressure welding fuse, wherein a fuse material is provided between a pair of carriers so as to be separable at a constant pitch, and is punched out.
After forming a press-contact fuse at both ends of the fusing portion which is blown by the overcurrent, and forming a press-contact fuse oriented in a direction orthogonal to the direction in which the press-contact portion is pressed, the carrier is removed. The pressure-welded fuse is turned into an equi-pitch corrugated shape for each of the pressure-welding fuses, thereby changing the position of the pressure-welded portion to the same direction as the pressure-welding direction.

[0009]

According to the first aspect of the present invention, while the carrier is being fed, the pressure welding operation of the pressure welding fuse can be performed in a direction substantially orthogonal to the feeding direction. Therefore, it is possible to automate the pressing operation.

According to the second aspect of the present invention, in a case where a pressure welding fuse is punched out of a fuse material in a state where the carrier has a straight shape, the pressure contacting direction is maintained while the mounting direction of the pressure contact portion remains in the carrier feeding direction. Does not match.
However, in the case where the bent portion is formed in the carrier, since the mounting posture of the press-contact fuse is changed, the mounting direction of the pressed portion can be aligned with the press-contact direction, which further facilitates automation.

According to the third aspect of the present invention, a continuous body of the pressure welding fuse is manufactured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to FIGS.
An embodiment of the present invention will be described in detail.

<Structure of Pressure Welding Fuse> First, the structure of the pressure welding fuse 1 will be described. The pressure welding fuse 1 includes a fuse body 6 formed of a single conductive member, and a protection wall 7 made of a resin material integrated with the fuse body 6. At the center of the fuse body 6, a fusing portion 2 that blows due to an overcurrent is provided. At both ends of the fusing portion 2, a pair of pressure-contacted portions 3 are provided. Both press-contact portions 3 can be pushed into a press-contact portion 5 of a terminal member 4 described later (see FIG. 3 and the like).

<Method of Manufacturing Continuum of Pressure Welding Fuse> Next, a continuum 10 of the pressure welding fuse (hereinafter, referred to as “continuous body 10”) will be described with reference to FIG. The continuum 10 includes a pair of carriers 8 provided in parallel,
And a pressure welding fuse 1 provided so as to extend between the two carriers 8. The press-contact fuse 1 is connected to the carrier 8 via a connection portion 9 at the tip of both press-contact portions 3. The connecting portion 9 is thinner and thinner than the pressed portion 3 and is mechanically separable. Each pressure welding fuse 1 is arranged so as to be orthogonal to the direction in which the carrier 8 extends.
Are arranged in parallel at regular intervals. The thickness direction of the pressure welding fuse 1 and the thickness direction of the carrier 8 coincide with each other.

In FIG. 1, both carriers 8 are sent at predetermined time intervals from the lower left direction to the upper right direction. In FIG. 1, a central portion of a fuse material H1 (a conductive plate material serving as a fuse body 6 of the pressure welding fuse 1) is punched out by a press to form a fusing portion 2 (fuse material H2). Then, when the carrier 8 is sent to a predetermined position, the pair of molds 11 move from above and below the fuse material H2 so as to pinch them, and molten resin is poured into a space formed inside the mold 11, The protective wall 7 is formed by the molten resin. In this way, the pressure welding fuses 1 are connected between the carriers 8 at regular intervals.

Next, the pair of holding pieces 12A, 12B, 13A and 13B are driven from above and below the carrier 8 so as to be sandwiched. Sandwiching pieces 12A, 12B, 1
Two sets of front and rear 3a and 13B are provided along the traveling direction of the carrier 8. A pair of upper and lower sandwiching pieces 12A and 12B on the front side (the side closer to the mold 11 in FIG. 1) are arranged along the extending direction of the carrier 8 in accordance with the pitch at which the pressure welding fuse 1 is separated. The positions are shifted by an interval. Each of the sandwiching pieces 12A, 12B is formed in a C-shaped cross section, and when the carrier 8 is sandwiched, a pair of abutting portions 21 that abut on the carrier 8 to perform a bending operation, A contact avoiding recess 22 is provided at the center of the portion 21 to avoid contact with the pressure welding fuse 1. The tip of each contact portion 21 has a tapered side cross section, so that the carrier 8 can be easily bent.

When the carrier 8 is sent from the mold 11 to the front sandwiching pieces 12A, 12B, the two sandwiching pieces 12A, 12B are moved.
12B sandwiches both carriers 8 from above and below. At this time, the two holding pieces 12A and 12B are set so as to hold the carrier 8 with the connecting portion 9 of the pressure welding fuse 1 therebetween. By this first clamping operation, the carrier 8 is bent into a substantially L-shape, and a bent portion 19 bent at the lower end or the upper end and a linear portion 20 formed linearly between the bent portions 19 are formed. You. The pressure welding fuse 1
Is bent so as to be located on the straight line portion 20 that moves upward from below.

Next, a pair of sandwiching pieces 13A, 1
3B will be described.
Is thinner than the front sandwiching pieces 12A, 12B, and its front-rear interval (the interval between 13A and 13B) is shorter than the interval between the front sandwiching pieces 12A, 12B. The cross-sectional shape of the sandwiching pieces 13A and 13B is C-shaped similarly to the cross-sectional shape of the sandwiching pieces 12A and 12B, and the contact portion 23 that contacts and bends with the carrier 8 and the pressure welding fuse 1 And a contact avoiding concave portion 24 for avoiding the contact.

The carrier 8 is provided with a rear sandwiching piece 13A,
When the carrier 8 is sent to 13B, the carrier 8 is further sandwiched and bent so that the angle of the bent portion 19 is further increased. By this second pinching operation, the carrier 8 is folded back into a U-shaped side cross section. That is, the carrier 8 is provided with the straight portion 20 that travels linearly in the up-down direction and the turn portion 19 that is turned so as to change the up-and-down traveling direction, and is turned into a wave shape as a whole. At this time, the press-contact fuse 1 is located in the straight portion 20 in which the carrier 8 goes from the lower end to the upper end, of the two straight portions 20 that rise or fall. The cycle of the bent portion 19 is the same as that of the pressure welding fuse 1.
Are formed at the same pitch as the mounting pitch.

When the entire carrier 8 is bent in a wave shape in this manner, the continuous body 10 is wound in a spiral shape by a carrier winder (not shown).

<Method of pressing a pressure welding fuse from a continuum>
Next, with reference to FIGS. 2 to 8, an operation procedure for cutting out and isolating the pressure welding fuse 1 connected to the carrier 8 as the continuum 10 and pressing the pressure welding fuse 1 to the pressure contact portion 5 will be described.

The continuous body 10 wound as described above
Is transported to a place where the pressing operation is performed, and is sent in a direction in which the waveform of the carrier 8 advances (from left to right in FIG. 2). Above the carrier 8, there is provided a press-contact device 14 that can move in the vertical direction. The pressure welding device 14 is movable in a direction substantially orthogonal to the direction of the carrier 8, and is arranged in accordance with the thickness direction of the pressure welding fuse 1. The pressure welding device 14 includes a head 15 that can hold or open the pressure welding fuse 1, and a pair of cutting blades 16 disposed at both ends of the head 15. At the tip of the head 15, there is provided a concave portion 17 which is equal to or slightly larger than the outer diameter of the upper half of the pressure welding fuse 1.
The pair of wall portions 18 forming the concave portion 17 are
Is slightly movable in the thickness direction. The two cutting blades 16 are movable in the vertical direction, and can cut the connecting portion 9 between the pressure welding fuse 1 and the carrier 8. Further, below the carrier 8, a pressure welding fuse 1 is provided.
Are provided with a pair of terminal members 4 each having a press-contact portion 5 capable of pushing the press-contact portion 3. Each of the two terminal members 4 is provided with a press-contact portion 5, and an interval between the press-contact portions 5 is arranged in accordance with an interval between the press-contact portions 3 of the press-contact fuse 1.

The continuum 10 is fed at a pitch equal to the pitch of the pressure welding fuse 1 into the pressure welding device 14 configured as described above. At the time of this feeding operation, the press-contacted portions 3 of the press-contact fuse 1 are in the same direction in the press-contact direction (vertical direction), and as shown in FIG. The two terminal members 4 are located below and separated by a predetermined distance.

When the pressure welding fuse 1 is sent directly below the head 15, the head 15 is lowered toward the pressure welding fuse 1, and the protection wall 7 of the pressure welding fuse 1 is inserted inside the recess 17. Then, the pressure welding fuse 1 is gripped in the head 15 by moving the two wall portions 18 in directions approaching each other (see FIG. 4).

Next, both cutting blades 16 are lowered to cut the connecting portion 9 (see FIG. 5), and only the isolated pressure welding fuse 1 is further lowered toward the terminal member 4 (FIG. 6).
See).

When the pressed portions 3 are pushed into the respective pressed portions 5 of the terminal members 4, the head 1 is pressed.
5 is completed (see FIG. 7), and the pressure welding fuse 1 is opened from the head 15 by moving the two wall portions 18 in a direction away from each other. Thus, the pressure welding fuse 1 is
It is pressed against both terminal members 4 (see FIG. 8).

Next, after the head 15 is raised again to the original position, the continuous body 10 is fed at a predetermined pitch, and the operation of isolating and pressing the next pressure welding fuse 1 is performed.

As described above, according to the present embodiment, while the carrier 8 is being fed, the pressure welding operation of the pressure welding fuse 1 can be performed in a direction substantially orthogonal to the feeding direction. For this reason, automation can be performed.

When the pressure welding fuse 1 is punched out of the fuse material H1 in a state where the carrier 8 has a straight shape, the mounting direction of the pressure-contacted portion 3 matches the pressure-contacting direction with the carrier 8 feeding direction. do not do. However, in the case where the bent portion 19 is formed in the carrier 8, since the mounting posture of the pressure welding fuse 1 is changed, the mounting direction of the pressed portion 3 can be aligned with the pressing direction. For this reason, automation is further facilitated.

Further, the press-contact fuse 1 is connected to the carrier 8 to all the straight portions 20 in the ascending direction.
Therefore, waste of the carrier 8 can be reduced.

When the carrier 8 is bent into a wave shape, the holding pieces 12A, 12B, 13
A and 13B make the music bend in two stages. For this reason, it is possible to avoid applying excessive stress to the carrier 8,
A smooth turning operation can be performed.

The present invention is not limited to the above-described embodiment. For example, the following ones are also included in the technical scope of the present invention. (1) In the present embodiment, the press-contact fuse 1 is connected to all of the rising linear portions 20 of the carrier 8.
According to the present invention, it is sufficient that the press-contact fuses are connected to the carrier at a constant pitch. For example, the press-contact fuses may be connected to every two or three turns of the bent portion. (2) In the present embodiment, when the carrier 8 is turned, the pinching operation in two steps before and after is performed, but according to the present invention, the turning operation in one step or three or more steps may be performed. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a manufacturing process of a continuous body of a pressure welding fuse according to an embodiment.

FIG. 2 is a perspective view when a press-contact fuse is pressed against a terminal fitting member using a continuous body of press-contact fuses.

FIG. 3 is a side view showing a state before pressing operation of the pressure welding fuse to the terminal fitting member.

FIG. 4 is a side view when the pressure welding fuse is held by the head of the pressure welding device.

FIG. 5 is a side view when the connecting portion between the press-contact fuse and the carrier is cut by a cutting blade from the state shown in FIG. 4;

FIG. 6 is a side view when the head of the pressure welding device is lowered toward the terminal fitting member.

FIG. 7 is a side view (partial cross-section) of the press-contact fuse when the press-contact portion is pushed into the terminal fitting member.

FIG. 8 is a perspective view of a terminal fitting member connected by a pressure welding fuse.

FIG. 9 is a perspective view of a conventional pressure welding fuse.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pressure welding fuse 2 ... Fusing part 3 ... Pressure contacted part 8 ... Carrier 10 ... Continuous body of pressure welding fuse 19 ... Turning part H1-H2 ... Fuse material

Claims (3)

[Claims] A press-contact fuse formed of a conductive plate and provided with a fusing portion that is blown by an overcurrent and a pair of press-contacted portions provided at both ends of the fusing portion is separated between a pair of parallel carriers. What is possible is a continuum of pressure welding fuses that are installed in parallel at predetermined pitches, wherein each of the pressure welding fuses is directed to the carrier in a direction in which the pressure-contacted portion is substantially orthogonal to a feed direction of the carrier. A continuum of a press-contact fuse, wherein the continuity of the press-contact fuse is set in a facing position, and a mounting direction of the pressed portion is the same as a working direction at the time of press-contact. 2. The both carriers are formed with a wave-shaped bent portion that repeats at a pitch equal to the pitch at which the pressure-welding fuses are mounted, and the pressure-welding fuse has a pressure-welded portion for each bent portion. 2. The camera according to claim 1, wherein the camera is mounted in a posture facing the same direction as the direction in which it is performed.
A continuum of the pressure welding fuse according to 1. 3. A press-bonded portion is formed at both ends of a fusing portion which is blown by an overcurrent by punching out a fuse material provided between a pair of carriers so as to be separable at a constant pitch. After forming the pressure-welding fuse in a posture oriented in a direction perpendicular to the direction in which the part is pressed, the pressed part is bent by turning the carrier into a wave shape of equal pitch for each of the pressure-welding fuses. A method for manufacturing a continuum of a pressure welding fuse, wherein the posture is changed to the same direction as the pressure contact direction.