JPH11341640A - Cord treatment device and cord treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cord treatment device and a cord treatment method by which a cord can be attached easily to an intermediate switch even if the cord has an outer braid. SOLUTION: A cord treatment device 20 is composed of a device main part (lower part) 21 which has a lower groove 24, and a cover part (upper part) 22 which can be detachably attached to the device main part 21. An upper groove 25 is provided in the cover part 22 at a position corresponding to the position of the lower groove 24. A wire 23 with an outer braid is housed between the lower groove 24 and the upper groove 25. If the cover part 22 is closed, a T-shape blade attached to the cover part 22 cut the wire 23 into respective cords separated from each other and cut one of the cords into two at its center part. While the cover part 22 is closed, resin is cast by a pressure into spaces between lower grooves 28 and 29 and upper grooves 31 and 32 through a resin casting pipe 34 and cured. Thus, treatment of the cord for an intermediate switch and the prevention of the frays of the outer braid can be practiced simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for processing a cord such as a parallel cord used for an intermediate switch of an electric product such as a lantern.

[0002]

2. Description of the Related Art In some electric appliances such as lanterns and desk lamps, an intermediate switch is mounted in the middle of a power cord. By operating this intermediate switch, the user can turn on / off the power supply of the electric product.

FIG. 10 shows a typical example of such an intermediate switch. The intermediate switch main body 12 disposed at an intermediate position of the power cord 11 has a structure that can be separated into two parts, a switch main body and a cover. A rotatable rotary plate 13 is attached to the switch main body, and the switch main body and the cover are aligned with the power cord 11 inserted into the cover, and both are fixed with screws 14. I have. A conductor (not shown) is attached to the rotating plate 13, and a pair of springs (not shown) come into contact or non-contact with the conductor at the same time by being rotated by a predetermined angle in a certain direction. I have.

FIG. 11 shows a state in which electric wires are accommodated in the cover of the intermediate switch body shown in FIG. One of the power cords 11A is arranged along the groove of the cover part 12A without being cut, and the other one 11B is cut at the center part, and the tip part thereof is provided at the center of the cover part 12A. It is arranged so as to be electrically separated from each other in space portions existing on both sides of the separated isolation wall 15.

FIG. 12 shows a processing state of a power cord housed in a cover of the intermediate switch body.
The parallel power cord 11 is separated into respective cord portions over a predetermined length, and one of the separated portions is cut at a central portion thereof and deformed in advance in a direction away from the other cord portion. If such a power cord 11 is prepared, the operator can attach it to the cover 12.
A, and screwing may be performed with the switch main body portion adjusted to this. A needle is formed on each of the pair of springs (not shown) for performing on / off control of the contacts in the switch body (not shown), and a needle is formed in the state where the switch body and the cover 12A are closed. One of these needles is inserted into the vicinity of each cut end of the power cord 11A. As a result, the disconnected power cords 11B come into electrical contact or non-contact with each other, and power is turned on and off. As described above, the intermediate switch shown in FIG. 10 has an advantage that the attachment of the power cord is extremely simplified, and is widely used.

[0006]

A power cord used for such an intermediate switch includes a vinyl cord body covered with an external braid such as cloth. Such an external braid portion has the advantage that, for example, in the case of a high-grade lantern itself, the quality of the lantern itself is improved, and in the case of electric products such as kotatsu, it is difficult to feel the temperature difference when the cord is touched. However, when attaching the power cord to the intermediate switch, it is necessary to cut the outer braided portion at the cut point of the cord body. Therefore, the intermediate switch 12
When the outer braid is frayed in the vicinity of, or when the outer braid near the cut point shrinks, the vinyl cord is exposed, which degrades the aesthetics of the electric product itself.

Therefore, conventionally, in order to prevent the cut portion of the outer braid from fraying, the portion is wound with a thread,
Alternatively, coating with a resin has been performed.
For this reason, conventionally, when a power cord having an external braid is used for the intermediate switch, a new process of stripping the external braid is required, and two cords constituting the cord main body that appear by this are required. It is necessary to add two steps such as separating the electric wire into a predetermined length one by one, cutting one of them, and then processing the end so that the vicinity of each cut portion of the outer braid does not deviate from the cord body. there were. Due to such an increase in the number of processing steps, there has been a problem that the assembly is complicated and the cost required for the assembly is increased.

In the above description, the problem with the intermediate switch having the disk-shaped rotary plate 13 shown in FIG. 10 has been pointed out, but any type of intermediate switch having a sliding or seesaw type movable piece has been pointed out. A similar problem occurs in the intermediate switch.

It is an object of the present invention to provide a cord processing apparatus and a cord processing method capable of easily attaching a cord having an external braid to an intermediate switch.

[0010]

According to the first aspect of the present invention, there is provided a cord in which a plurality of electric wires are buried in parallel in a belt-shaped insulating material at intervals and the periphery of the insulating material is covered with an outer braid. An elongated linear groove for accommodating the
A lower mold portion in which a resin injection port for injecting resin from the outside is disposed at two places at predetermined intervals of the groove; and (b) an external device is provided at a position which can freely contact and separate from the lower mold portion and faces the groove. The insulating material at a portion corresponding to a portion sandwiched between two portions of the cord covered by the braid at a predetermined interval is cut in a length direction of the groove to be separated into a plurality of wires, and at least one of the wires is separated. And an upper mold portion having protruding blades for cutting the two at required positions.

That is, according to the first aspect of the present invention, the cord processing device is composed of a lower mold portion and an upper mold portion which can be freely moved toward and away from the lower mold portion. Then, a long linear groove is provided on the lower mold part side, a plurality of electric wires are buried in parallel in the belt-shaped insulating material at intervals, and a cord covered with an outer braid around the insulating material is accommodated. It can be so. In addition, a resin injection port for injecting a resin from the outside is arranged at two places at predetermined intervals in the groove. In the upper mold portion, only a portion accommodated in the groove of the cord is separated into respective electric wires over a predetermined length, and a blade for cutting at least a central portion of at least one of the wires is projected. Thus, when the cord is accommodated in the lower mold part side and the upper mold part is closed, the intermediate position of the cord is separated into the respective electric wires over a predetermined length in the closing process, and at least one of them is cut. In addition, by injecting the resin from the resin injection port with the upper mold part closed, the outer braid is fixed to the lower insulating material outside the cut portion, so that the outer braid is frayed or cut off. The disadvantage that the vicinity moves with respect to the insulating material such as vinyl (the portion of the insulating material is exposed) does not occur.

According to the second aspect of the present invention, (a) a plurality of wires are buried in parallel in a belt-shaped insulating material at intervals and accommodate a cord in which the periphery of the insulating material is covered by an external braid. A lower mold part with a straight groove,
(B) The insulating material at a position corresponding to a portion sandwiched between two portions of the cord covered by the outer braid, which is interposed between the two portions at a predetermined distance, is provided at the position facing the groove so as to be able to freely contact and separate from the lower mold portion. The blade is cut in the length direction to separate it into a plurality of electric wires, and a blade for cutting at least one of the electric wires at two required positions is protruded, and a predetermined interval of grooves is provided.
The code processing device is provided with an upper mold portion having a resin injection port for injecting resin into two locations.

In other words, according to the second aspect of the present invention, the cord processing device is composed of a lower mold portion and an upper mold portion which can freely contact and separate from the lower mold portion. Then, a long linear groove is provided on the lower mold part side, a plurality of electric wires are buried in parallel in the belt-shaped insulating material at intervals, and a cord covered with an outer braid around the insulating material is accommodated. It can be so. In the upper mold portion, only a portion accommodated in the groove of the cord is separated into respective electric wires over a predetermined length, and a blade for cutting at least a central portion of at least one of the wires is projected. In addition, a resin injection port for injecting resin from the upper mold portion side is also arranged at two places at predetermined intervals in the groove of the lower mold portion. Thus, when the cord is accommodated in the lower mold part side and the upper mold part is closed, the intermediate position of the cord is separated into the respective electric wires over a predetermined length in the closing process, and at least one of them is cut. In addition, by injecting the resin from the resin injection port with the upper mold part closed, the outer braid is fixed to the lower insulating material outside the cut portion, so that the outer braid is frayed or cut off. The disadvantage that the vicinity moves with respect to the insulating material such as vinyl (the portion of the insulating material is exposed) does not occur.

According to the third aspect of the present invention, (a) a cord in which a plurality of electric wires are buried in parallel in a belt-shaped insulating material at intervals and the periphery of the insulating material is covered by an outer braid, is formed into an outer shape of the cord. (B) a first blade protruding from a lid disposed so as to be able to freely contact and separate from a surface on which the linear groove is formed. Then, the intermediate position of the cord housed in the groove is cut over a predetermined length along the length direction of the groove so as to separate the intermediate position of the cord housed in the groove into a plurality of electric wires covered with the insulating material in conjunction with the closing movement of the lid At the same time, at least one of the wires separated at the middle position of the cord by the first blade is separated by a second blade protruding from the lid in conjunction with the closing movement of the lid. Cut into two at almost the center of the second And (c) in a state where the lid completely covers the surface on which the groove is formed, apply resin from the outer braid side to a portion cut by the first blade in the groove or a predetermined position located outside the portion. A third step of injecting and solidifying and fixing the outer braid to the insulating material immediately below at the injection point.

That is, according to the third aspect of the present invention, the cord to which the intermediate switch is to be mounted is accommodated in the elongated linear groove without removing the outer braid, and is freely movable toward and away from the surface provided with the groove. In the process of closing the lid,
This cord is cut with a blade provided on the lid side. The blade is provided with a first blade and a second blade, and the first blade extends in the length direction of the groove so as to separate an intermediate position of the cord into a plurality of electric wires covered with an insulating material. Along the predetermined length along the length, the second blade cuts at least one electric wire into two at substantially the center of the cut position in the length direction of the groove. With the lid closed, a resin is injected from the external braid side into a location cut by the first blade or a predetermined location located outside of the first braid to solidify the resin so that the outer braid is insulated from the insulating material immediately below. And fix it. As described above, according to the third aspect of the present invention, the cord used for the intermediate switch can be easily processed simply by housing the cord in the groove, closing the lid and injecting the resin.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments.

FIG. 1 shows the principle configuration of a cord processing apparatus according to one embodiment of the present invention. The cord processing apparatus 20 of the present embodiment includes an apparatus main body (lower mold section) 21 and a lid section (upper mold section) 22 which is disposed so as to be able to freely contact and separate via a hinge mechanism (not shown). Device body 2
1 is provided with a lower groove 24 for accommodating a lower half portion of an electric wire 23 coated with an outer braid of cotton and gold thread on a parallel vinyl cord horizontally. An upper groove 25 for accommodating the upper half of the flat power cord 23 as a remaining portion is also formed in the cover 22 at a position exactly facing the lower groove 24. At the center of the upper groove 23, a T-shaped blade 26
Has been planted. The blade 26 includes a horizontal blade portion 26A arranged in the longitudinal direction of the upper groove 25, and a vertical blade portion 2 extending a predetermined length in the 90-degree direction from the center of the horizontal blade portion 26A to the back side.
6B. The lower groove 24 has the T-shaped blade 2
6, a T-shaped groove 27 is carved.

On both sides of the T-shaped groove 27 in the lower groove 24, a pair of outer braided lower grooves 28, 29 are cut at predetermined intervals so as to cross the groove. The depth of the outer braid retaining lower grooves 28 and 29 is two times the length L of the outer braid retaining lower grooves 28 and 29 on the surface of the apparatus main body 21.
It is one in one. The outer braid retaining upper grooves 31 and 32 are also formed on the lid portion 22 at positions exactly facing these outer braid retaining lower grooves 28 and 29. These also cover 22
Are both L on the surface and the depth is one half of that. A pair of external braided lower grooves 28 and 29 on the device body 21 side are connected to an elongated tube 33 shown in a simplified form in the figure, which is connected to a resin injection tube 34 for injecting resin from outside at high pressure. Have been.

In order to process a flat power cord for an intermediate switch using such a cord processing apparatus 20, first, as shown in FIG. 1, the lower half of the flat power cord 23 is kept covered with the outer braid. In this state, it is press-fitted into the lower groove 24. At this time, the flat power supply cord 23 is configured such that the plane formed by the two electric wires therein is parallel to the upper surface of the apparatus main body 21. Since such a flat power supply cord usually has a flat elliptical cross section, the major axis of the ellipse may be parallel to the upper surface of the apparatus main body 21.

When the setting of the flat power cord 23 is completed in this way, the lid 22 is completely closed. Then, in this process, a T-shaped blade 26 arranged on the lid 22 side cuts the flat power cord 23 into a T-shape, and a T-shaped groove 27.
Will fit in.

FIG. 2 shows a cut portion of a flat power cord cut by a T-shaped blade. As described above, the flat power supply cord 23 has one of the two conductor cables 41 and 42 contained therein cut by the vertical blade portion 26B, and the cross section covering the two conductor cables 41 and 42 has a figure-eight shape. The connecting portion of vinyl is cut by the horizontal blade portion 26A over a predetermined length.

The flat power cord 23 is cut in a state where the lid 22 is completely closed on the apparatus main body 21 as described above. In this closed state, a sensor (not shown) detects this, and the resin is injected. A predetermined amount of resin is injected from the pipe 34 at high pressure.

FIG. 3 shows a flat power cord taken out of the cord processing apparatus after the resin is injected into the upper groove and the lower groove in this way. Flat power cord 23
Are formed with plate-shaped stoppers 52, 53 each having a square shape with a length of L on both sides of the cut portion 51.
Since these stoppers 52 and 53 are made of resin which is injection molded at high pressure, they are solidified in a state where the outer braid is pressed against the outer braid, and the outer braid does not move from the inner vinyl cord.

At the cutting portion 51, the outer braid is naturally cut together with the vinyl cord. Therefore, if necessary, it can be easily peeled off and removed. In this embodiment, needle-shaped conductors are brought into contact with the conductor cables on the cut side, respectively, so that these conductors are electrically turned on and off. Therefore,
If the intermediate switch is capable of accommodating the flat power cord with the outer braid left, it is not necessary to particularly remove the outer braid.

FIG. 4 shows the appearance of an intermediate switch incorporating a flat power supply cord processed as shown in FIG. The intermediate switch 61 has the same appearance as that shown in FIG. 10, and the rotary plate 62 is incorporated in the switch body in a rotatable state. The stoppers 52 and 53 shown in FIG. 3 are housed inside the switch body.
Therefore, the flat power cord 23 covered with the outer braid is pulled out to the outside.

FIG. 5 shows a state in which a flat power cord is incorporated into the cover of the intermediate switch. The cover portion 61A is provided with a vertically elongated groove at each of positions corresponding to the two stopping portions 52 and 53 for fitting them. In the center, a beaker-shaped separation wall 61 is arranged, and a screw hole 62 is formed in the center thereof. The operator removes the uncut cord portion 63 of the flat power supply cord 23 shown in FIG. It is fixed by passing between two protruding pieces 64 and 65 protruding on both sides of a position corresponding to the bottom of the shape and a position facing the same. Flat power cord 23
Of the two cord sections 66, 67 cut at the center
Are accommodated in a state where they are curved upward in this figure so as to abut on the “beaker” -shaped “neck” portion 61B of the isolation wall 61 from opposite directions.

Similarly to the conventional intermediate switch described with reference to FIG. 10, this intermediate switch 61 also includes a cover 61A and a switch body (not shown). In the switch body, the rotating plate 62 shown in FIG. 4 is rotatably arranged, and also comes into contact with and separates from a metal plate (not shown) attached to the rotating plate 62 in accordance with the rotating position of the rotating plate 62. A pair of springs are attached. Further, needles are formed on the pair of springs similarly to the conventional intermediate switch 12 described with reference to FIG. Therefore, when the switch body is closed with the cover 61A shown in FIG. 5, the two cord portions 6 whose needles are cut at the center at this time are shown.
6, 67 are pierced and electrically connected to them.
As a result, every time the rotating plate 62 rotates by a predetermined angle, the on / off control of the flat power cord 23 is performed.

First Modified Example

In the embodiment described above, the stopper 5 for stopping the outer braid from moving relative to the vinyl cord.
The width of 2, 53 is made relatively short, and these are housed in grooves provided inside the main body of the intermediate switch. Stop 5
The configurations 2 and 53 are not limited to such. For example, by increasing the length and providing elasticity and extending the lengthened portion from both ends of the intermediate switch over a predetermined length, deterioration of the disconnection due to bending of the cord at both ends of the intermediate switch can be prevented. Can be prevented.

FIG. 6 shows an intermediate switch mainly used for kotatsu as a first modification of the present invention. The intermediate switch 71 has a sliding operation piece 7.
The power supply can be turned on and off by moving it left and right in the figure. From both ends of the intermediate switch 71, cord protection members 73 and 74 made of relatively soft resin extend over a predetermined length,
The power cord 75 covered with an external braid such as cloth is protected against bending.

FIG. 7 is a view for explaining a method of processing a code used for the intermediate switch shown in FIG. This figure corresponds to FIG. 3 of the previous embodiment. In this modification, the power cord 75 is set in a cord processing device (not shown) as shown in FIG. Then, the set central portion is cut into a T-shape from above the outer braid as in the previous embodiment, and a pair of cord protection members 73 and 74 are placed on the power cord 75 by injecting resin at high pressure. Formed. These cord protection members 73 and 74
At the same time, the outer braid is prevented from shifting, and at the same time, serves to protect the power cord 75 from bending.

The outer braid between the cord protection members 73 and 74 shown in FIG. 7 has been removed and the cord portion 8 on the cut side has been removed.
The ends of the wires 1A and 81B expose the wires 82A and 82B by a predetermined length using, for example, a stripper. The cord portion 83 on the uncut side has the outer braid removed. It should be noted that the cut cord portions 81A and 81B are not cut and the cord portions 83 are not cut.
If it is too long, the code parts 81A, 81B
Is cut by two blades arranged at a predetermined interval without cutting by one blade, these cord portions 81
The length of A, 81B can be adjusted at the time of cutting.

FIG. 8 shows a state in which the power cord thus processed is incorporated in an intermediate switch. The cord portion 83 on the uncut side is the movable portion 9
It is housed along the movable part support member 92 so as not to hinder the reciprocation of the first member. Wires 82A, 82B stripped from cord portions 81A, 81B on the cut side
Are screwed to corresponding terminals 94A and 94B.
A, fixed at 95B. These terminals 94A, 94B
Are provided with contact pieces 96A and 96B, respectively.

The operation piece 72 shown in FIG.
Is reciprocated in the length direction (horizontal direction in the figure), a contact piece 96B having one end connected to the movable portion 91 via a spring receives a force in the moving direction of the movable portion 91 and the terminal 9
It swings around the mounting point on the 4B side as a fulcrum. As a result, as shown in FIG. 6, with the operation piece 72 moved to the left in the figure as far as possible, the contact between the two contact pieces 96A and 96B is cut off, and the switch is turned off. On the contrary, in a state where the operation piece 72 has moved to the right in the figure as far as possible, the movable portion 91 moves the contact piece 96B to the other contact piece 96B.
As a result, the switch is turned on.

As described above, in the assembly of the intermediate switch shown in FIG. 8, one cord portion 83 is not cut, thereby simplifying the process of assembling the intermediate switch. However, the present invention is not limited to this. For example, instead of cutting the power cord 75 in a T-shape as shown in FIG. 7, the power cord 75 is cut in a cross shape, and a pair of cord protection members 73 and 74 are resin-molded so as to sandwich the cut portion. You may make it strip | peel an electric wire part in each cutting | disconnection location (4 places). In this case, unlike the intermediate switch shown in FIG. 8, the ends of each cord are screwed to one of four terminals.

The latter type of intermediate switch has the same configuration as a conventionally used switch.
That is, two of the four terminals are electrically connected at all times by forming a member shown as, for example, the movable portion support member 92 in FIG. 8 with a conductive member. In this case, the remaining two terminals are, for example, the two connecting pieces 9 similarly to the two terminals 94A and 94B shown in FIG.
The electrical connection is controlled on / off by the contact and separation of 6A and 96B.

Second Modified Example

FIG. 9 shows a state in which a processed power cord is connected to an intermediate switch incorporating a slide switch as a second modification of the present invention. The same parts as those in the first modification are denoted by the same reference numerals, and description thereof will be omitted as appropriate. In the second modification, the slide piece 10
Slide both terminals 102, 1
The slide switch 104 that can control the on / off of the interval 03 is accommodated in an intermediate switch body (not shown).

Then, the cord portions 81A and 81B on the cut side of the processed power cord shown in FIG.
02 and 103, or screwed. These terminals 102 and 103 may be swaged.
If the cut cord portions 81A and 81B are too long with respect to the uncut cord portion 83, the length of the cord portions 81A and 81B is adjusted at the time of cutting or assembling as described above. You may make it. FIG. 9 shows the slide switch 104 viewed from the side in addition to the one viewed from above.

Although various types of intermediate switches have been described above, the code processing method of the present invention can be applied to other intermediate switches. The power cord as the object of the cutting process performed in parallel with the molding of the resin does not need to be a parallel cord or a parallel cable in which two wires are arranged in parallel. There may be.

In the embodiment, as shown in principle in FIG. 1, the resin is injected from the apparatus main body 21 through the resin injection pipe 34. However, such injection may be performed from the lid 22 side. Is natural. Further, the cord processing apparatus of the present invention which simultaneously performs resin injection and cord cutting does not need to have a structure having an apparatus main body 21 and a lid portion 22 which can be freely opened and closed as shown in FIG. The lower mold and the upper mold which are usually used at the time of resin molding may be constituted. In this structure, the lower die corresponds to the apparatus main body 21 of the embodiment, and the upper die corresponds to the lid 22 of the embodiment, but the upper die is arranged to be vertically movable. Then, the cord cutting process is performed when the lower surface of the upper mold comes into close contact with the upper surface of the lower mold. There are many holes in the upper part of the upper mold for injecting the resin, and when the lower mold and the upper mold are in close contact, the nozzle for injecting the resin descends from above, When the resin is inserted into the hole, the resin is injected into a predetermined position of the cord. As described above, the lower mold portion and the upper mold portion do not necessarily have to have a structure that can be freely opened and closed by a hinge mechanism, and it is only necessary that both have a structure that can freely contact and separate.

Further, in the embodiment, the grooves 24 and 25 for the electric wires 23 are arranged on both sides of the apparatus main body 21 and the lid portion 22.
Depending on the shape of 3, it may be arranged on only one side. Further, in the embodiment, one of the power cords is cut at substantially the center at one place. However, the cut position may be a position deviated to any side from the center, or 2.
It goes without saying that cutting may be performed with a book blade to remove the electric wire portion between these blades.

In the embodiment, the plate-shaped stoppers 52, 53 formed by injecting the resin into the pair of outer braid stopper lower grooves 28, 29 are square with one side length L. Of course, the protection members 73 and 74 may have a shape like that, and the cross-sectional shape perpendicular to the length direction of the cord may be any shape such as a flat and angled shape like an ellipse. Of course, it is good.

[0045]

As described above, according to the first aspect of the present invention, the cord processing device for processing the cord for the intermediate switch is provided with the lower mold part and the cord processing device arranged so as to be able to freely contact and separate from the lower mold part. It is composed of a mold part, and a long and narrow linear groove is provided on the lower mold part side, multiple wires are buried in parallel in the strip-shaped insulating material at intervals, and the periphery of the insulating material is covered with an external braid A resin injection port for injecting resin into this groove while accommodating the cord was placed, and a blade for cutting the cord was placed on the upper mold part side, so the cord was placed on the lower mold part, the lid was closed, and the resin was closed. All the processing of the code can be done just by injecting. Therefore, it is not necessary to perform a process of manually processing the vicinity of the end of the cut cord so as not to be frayed, and it is possible to realize both a quick processing of the code and a cost reduction. In addition, if the large-diameter portion formed by injecting the resin is incorporated into the intermediate switch, it is possible to easily prevent the cord from coming out of the switch and applying an external force to the contact portion of the switch.
Furthermore, if the resin is made of a material that maintains a soft state like rubber even after solidification, the bending of the cord at the end of the intermediate switch can be eased, and disconnection due to fatigue of the electric wire in this portion can be effectively prevented.

According to the second aspect of the present invention, a cord processing device for processing a cord for an intermediate switch is constituted by a lower mold portion and an upper mold portion which is disposed so as to be able to freely move toward and away from the lower mold portion. An elongated linear groove is provided on the lower mold part side, a plurality of electric wires are buried in parallel in a belt-shaped insulating material at intervals, and a cord covered with an outer braid around the insulating material is accommodated therein, On the upper mold part side, a blade for cutting the cord and a resin injection port for injecting resin into the groove on the lower mold part side are arranged, so just place the cord on the lower mold part, close the lid, and inject the resin All processing of the code can be performed. Therefore, it is not necessary to perform a process of manually processing the vicinity of the end of the cut cord so as not to be frayed, and it is possible to realize both a quick processing of the code and a cost reduction. In addition, if the large-diameter portion formed by injecting the resin is incorporated into the intermediate switch, it is possible to easily prevent the cord from coming out of the switch and applying an external force to the contact portion of the switch. Furthermore, if the resin is made of a material that maintains a soft state like rubber even after solidification, the bending of the cord at the end of the intermediate switch can be eased, and disconnection due to fatigue of the electric wire in this portion can be effectively prevented.

According to the third aspect of the present invention, the cord to which the intermediate switch is to be mounted is accommodated in the elongated linear groove without removing the outer braid, and the cord is in contact with the surface provided with the groove. In the process of closing the detachable lid,
Since the cutting process of the cord is performed by the blade provided on the lid side, a troublesome operation of removing only the outer braid in advance is not required. Further, since the cord is cut in two directions by the first blade and the second blade, the operation of separating the cord and cutting at least one of the separated cords is performed simultaneously by one action of closing the lid. be able to. Therefore, the mutual cutting positions can be set without error, and the cord can be easily and efficiently attached to the intermediate switch. Further, since the cord can be cut and the resin can be injected with the lid closed, there is no need to position the injection position of the resin, and similarly, there is an effect that the accuracy of processing can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a basic configuration of a cord processing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing a cut portion of a flat power supply cord cut by a T-shaped blade in the embodiment.

FIG. 3 is a plan view showing a flat power supply cord taken out of a cord processing device after resin is injected into an upper groove and a lower groove in an embodiment.

FIG. 4 is a plan view showing the appearance of an intermediate switch incorporating the flat power cord processed as shown in FIG. 3;

FIG. 5 is a plan view of the cover showing a state in which the flat power cord is incorporated in the cover of the intermediate switch in the embodiment.

FIG. 6 is a plan view showing the appearance of an intermediate switch mainly used for kotatsu in a first modification of the present invention.

FIG. 7 is a plan view of a main part of a cord for explaining a method of processing a cord used in the intermediate switch shown in FIG. 6 in a first modification of the present invention.

FIG. 8 is a plan view showing a state where the power cord processed in the first modification of the present invention is incorporated in an intermediate switch.

FIG. 9 is a plan view showing a state in which a power cord processed in a second modification of the present invention is connected to a slide switch of an intermediate switch.

FIG. 10 is a plan view showing the appearance of a typical conventional intermediate switch.

FIG. 11 is a plan view showing a state in which electric wires are accommodated in a cover portion of the intermediate switch main body shown in FIG.

FIG. 12 is a plan view showing a processing state of a power cord housed in a cover of a conventional intermediate switch body.

[Explanation of symbols]

 Reference Signs List 20 cord processing apparatus 21 apparatus main body (lower mold part) 22 lid (upper mold part) 23 electric wire 24, 28, 29 lower groove 25, 31, 32 upper groove 26 T-shaped blade 26A horizontal blade part 26B vertical blade part 34 resin Injection tube

Claims (3)

[Claims] 1. An elongated linear groove for accommodating a cord in which a plurality of electric wires are buried in parallel and spaced apart from each other in a strip-shaped insulating material, and the periphery of the insulating material is covered by an outer braid, and A lower mold portion in which a resin injection port for injecting resin from the outside is disposed at two locations spaced apart from each other by a predetermined distance; and
The insulating material of a portion corresponding to a portion sandwiched between the two predetermined intervals of the cord covered by the outer braid is cut in a length direction of the groove to be separated into a plurality of electric wires, and at least one of them is separated. A cord cutting device comprising: an upper mold portion having a protruding blade for cutting one electric wire at predetermined positions of the two places. 2. A lower mold in which a plurality of electric wires are buried in parallel in a belt-shaped insulating material at intervals and an elongated linear groove is provided for accommodating a cord covered with an outer braid around the insulating material. Part, at a position that can be opened and closed with the lower mold part and faces the groove,
The insulating material of a portion corresponding to a portion sandwiched between the two predetermined intervals of the cord covered by the outer braid is cut in a length direction of the groove to be separated into a plurality of electric wires, and at least one of them is separated. An upper mold part having a resin injection port for projecting a blade for cutting one electric wire at required positions of the two places, and having a resin injection port for injecting a resin into two places at predetermined intervals in the groove; A code processing device characterized by the above-mentioned. 3. A cord in which a plurality of electric wires are buried in parallel in a strip-shaped insulating material at intervals and covered with an outer braid around the insulating material is accommodated in an elongated linear groove along the outer shape of the cord. And a first blade protruding from a lid disposed so as to be able to freely contact and separate from the surface on which the linear groove is formed, in conjunction with the movement of closing the lid. The intermediate position of the cord housed in the groove is cut along a predetermined length along the length of the groove so as to be separated into a plurality of electric wires covered with an insulating material, and the intermediate position of the cord is cut by the first blade. At least one of the electric wires to be cut and separated is cut into two substantially at the center of the lengthwise cut portion of the groove in conjunction with the movement of the lid being closed by the second blade protruding from the lid. A second step, wherein the lid has the shape of the groove; In a state that completely covers and the by surface,
A resin is injected from the external braid side to a portion cut by the first blade in the groove or a predetermined position located outside the same, and solidified, and the external braid is injected at the injection point with respect to the insulating material immediately below. And a third step of fixing.