JP2017039284A - Manufacturing method of cable with mold resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a cable with mold resin, which is capable of suppressing an insulating wire from being caught between an upper die and a lower die used for molding a mold resin part when sandwiched therebetween, thereby making it possible to improve the yield.SOLUTION: A cable with mold resin is manufactured through: a first disposing step which disposes a part of first and second insulating wires 11 and 12 on a lower die 5; a second disposing step which disposes an upper die 6 to sandwich the part of the first and second insulating wires 11 and 12 between with the lower die 5; and an injection step which injects a molten resin into cavities of the lower die 5 and the upper die 6 while having the part of the first and second insulating wires 11 and 12 housed in first and second lower-side recessed grooves 50a and 50b formed on the lower die 5 and in first and second upper-side recessed grooves 60a and 60b formed on the upper die 6. In the first disposing step, the first and second insulating wires 11 and 12 are guided by first to third protrusions 51 to 53 of the lower die 5 and housed in the first and second lower-side recessed grooves 50a and 50b.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a method for manufacturing a cable with a mold resin, in which a mold resin portion is formed using a mold having an upper mold and a lower mold.

  Conventionally, a plurality of insulated wires formed by coating a linear conductor with an insulator, an electronic component connected to ends of the plurality of insulated wires, and an electronic component that covers at least a part of the electronic component and is an insulated wire There is known a cable with a mold resin provided with a mold resin part for molding a connection part with the cable (for example, see Patent Document 1).

  A cable with a molded resin described in Patent Document 1 includes a cable in which a plurality of insulated wires are collectively covered with a sheath, a sensor unit connected to tips of the plurality of insulated wires exposed from the sheath, a sensor unit, And a molded resin portion formed so as to cover the tips of the plurality of insulated wires. The mold resin portion is formed by injecting molten resin into a cavity from a resin injection hole formed in a mold. The mold has an upper mold and a lower mold, and a plurality of insulated wires are sandwiched between the upper mold and the lower mold in the injection step of injecting molten resin into the cavity.

  According to the cable with the molded resin, since the sheath is not molded, when the cable is routed in a direction perpendicular to the cable extending direction from the molded resin portion, the protruding length of the cable from the molded resin portion Can be shortened.

JP, 2015-109163, A

  In the manufacturing process of the cable with a molded resin described in Patent Document 1, since the insulated wire is thinner and softer than the sheath, the insulated wire is likely to bite when the insulated wire is sandwiched between the upper mold and the lower mold. If the insulated wire is caught between the upper mold and the lower mold in this way, the injected resin leaks out from the gap between the upper mold and the lower mold, and the mold resin portion is molded normally. Cannot be discarded as a defective product.

  Therefore, the present invention can suppress the occurrence of biting when the insulated wire is sandwiched between the upper mold and the lower mold for molding the mold resin portion, and thus can improve the yield. An object of the present invention is to provide a method for manufacturing a cable with a molded resin.

  In order to solve the above-mentioned problems, the present invention provides a plurality of insulated wires obtained by coating a linear conductor with an insulator, an electronic component connected to ends of the plurality of insulated wires, The mold resin portion is formed using a mold that covers at least a part of the electronic component and molds a connection portion of the insulated wire to the electronic component and having an upper die and a lower die. A method of manufacturing a cable with a molded resin, wherein the upper part is configured to sandwich a part of the insulated wire between the first placement step of placing a part of the insulated wire on the lower mold and the lower mold. A second disposing step of disposing a mold; and a portion of the insulated wire being accommodated in a lower concave groove formed in the lower mold and an upper concave groove formed in the upper mold. The molten resin is poured into the cavity formed between the A method of manufacturing a cable with a molded resin, wherein, in the first arrangement step, the insulated wire is guided by a guide portion provided in the lower mold and is accommodated in the lower concave groove. I will provide a.

  According to the method for manufacturing a cable with molded resin according to the present invention, it is possible to suppress the occurrence of biting when the insulated wire is sandwiched between the upper mold and the lower mold for molding the molded resin portion. Thus, the yield can be improved.

It is a perspective view which shows an example of the cable with a mold resin manufactured by the manufacturing method which concerns on embodiment of this invention. It is a perspective view which shows the internal structure of the principal part of a cable with mold resin. It is sectional drawing which shows the state which combined the lower mold | type of the metal mold | die used for manufacture of the cable with mold resin, an upper mold | type, and an auxiliary | assistant type | mold. It is a perspective view which shows a lower mold | type and an auxiliary mold | type. It is a perspective view which shows an upper mold | type. The cross section of the part where a lower mold | type and an upper mold | type are combined is shown, (a) shows the state before a combination, (b) shows the state after a combination, respectively.

[Embodiment]
FIG. 1 is a perspective view showing an example of a cable with a molded resin manufactured by the manufacturing method according to the embodiment of the present invention. FIG. 2 is a perspective view showing an internal structure of a main part of the cable with a molded resin, in which the contour of the molded resin portion to be described later is represented by a virtual line (two-dot chain line). In FIG. 1, the inside of the mold resin portion is illustrated by a broken line.

  The cable 1 with mold resin includes a cable portion 100, a sensor 2 as an electronic component connected to one end portion of the cable portion 100, and a mold resin portion 3 that covers the sensor 2.

  The cable unit 100 includes a first insulated wire 11 and a second insulated wire 12, and a sheath 10 that collectively covers the first insulated wire 11 and the second insulated wire 12. As shown in FIG. 2, the first insulated electric wire 11 includes a core wire 111 made of a linear conductor, and an insulating coating 112 that covers the outer periphery of the core wire 111 except for an end portion. Similarly, the 2nd insulated wire 12 consists of the core wire 121 which consists of a linear conductor, and the insulation coating 122 which covers the outer periphery except the edge part of the core wire 121. As shown in FIG. In the present embodiment, the core wire 111 of the first insulated wire 11 and the core wire 121 of the second insulated wire 12 are stranded wires obtained by twisting together a plurality of strands made of a highly conductive metal conductor such as copper. is there. However, the present invention is not limited to this, and for example, a single copper wire may be used as the core wires 111 and 121. The outer diameter of the first insulated wire 11 and the outer diameter of the second insulated wire 12 are each 1.5 mm, for example. Moreover, in this Embodiment, the 1st insulated wire 11 and the 2nd insulated wire 12 are coat | covered by the sheath 10 in the state twisted together.

  The first insulated wire 11 and the second insulated wire 12 are led out from the end face 10a of the sheath 10, and a part of the lead-out side of the first insulated wire 11 and the second insulated wire 12 is molded resin. Part 3 is covered. The mold resin portion 3 is made of a resin such as PBT (polybutylene terephthalate) or nylon. The material of the sheath 10 is, for example, polyurethane. The material of the insulation coatings 112 and 122 of the first insulated wire 11 and the second insulated wire 12 is, for example, polyethylene. Among the first insulated wire 11 and the second insulated wire 12 led out from the sheath 10, a part on the mold resin portion 3 side in a range not covered with the mold resin portion 3 is a gold in the manufacturing process described later. It becomes a to-be-held part hold | maintained at a type | mold.

  In the present embodiment, the sensor 2 is a magnetic field sensor that detects the strength of the magnetic field, and is entirely covered with the mold resin portion 3. The sensor 2 includes a main body portion 20 in which a detection element such as a Hall element is sealed with a sealing material such as resin or ceramic, and a first lead wire 21 and a second lead wire 22 led out from the main body portion 20. have. In the present embodiment, the first lead wire 21 and the second lead wire are arranged such that the magnetic field detection surface 20a of the main body portion 20 is parallel to the axial end surface 30a of the cylindrical housing portion 30 of the mold resin portion 3. 22 is bent.

  In addition, the sensor 2 may detect various physical quantities (temperature, acceleration, etc.) other than the magnetic field. Further, the sensor 2 does not necessarily have to be entirely covered with the mold resin part 3, and it is sufficient that at least a part is covered with the mold resin part 3. Furthermore, the electronic component that is at least partially covered by the mold resin portion 3 is not limited to a sensor that measures a physical quantity, and may be a conductive connection member such as a terminal fitting.

  The core wire 111 at the end of the first insulated wire 11 is connected to the first lead wire 21 of the sensor 2 by welding or soldering. Similarly, the core wire 121 at the end of the second insulated wire 12 is connected to the second lead wire 22 of the sensor 2 by welding or soldering. An output signal indicating the detection result of the sensor 2 is transmitted to a control device or the like (not shown) by the first insulated wire 11 and the second insulated wire 12.

  The mold resin part 3 integrally includes a housing part 30 for housing the sensor 2 and a flange part 31 for attachment to a device to be measured. The accommodating portion 30 has a cylindrical shape having a central axis parallel to the direction in which the first insulated wire 11 and the second insulated wire 12 are led out from the mold resin portion 3. The flange portion 31 protrudes from the outer peripheral surface of the housing portion 30. In addition, an insertion hole 310 through which a fixing tool such as a bolt is inserted is formed in the flange portion 31 in parallel with the central axis of the housing portion 30.

  The accommodating portion 30 covers the sensor 2 and molds the connecting portions 11 a and 12 a with the sensor 2 in the first insulated wire 11 and the second insulated wire 12. The connection part 11a in the first insulated wire 11 is a tip part of the first insulated wire 11 including a portion where the insulation coating 112 is removed and the core wire 111 is exposed. Similarly, the connection part 12a in the 2nd insulated wire 12 is a front-end | tip part of the 2nd insulated wire 12 containing the part which the insulation coating 122 was removed and the core wire 121 exposed.

(Method for manufacturing cable 1 with molded resin)
Next, the manufacturing method of the cable 1 with mold resin and the metal mold | die used for this manufacturing method are demonstrated with reference to FIG. 3 thru | or FIG.

  FIG. 3 is a cross-sectional view showing a state in which the lower mold 5, the upper mold 6, and the auxiliary mold 7 used in the manufacture of the cable 1 with molded resin are combined. FIG. 4 is a perspective view showing the lower mold 5 and the auxiliary mold 7. FIG. 5 is a perspective view showing the upper mold 6. FIG. 6 shows a cross section of a portion where the lower die 5 and the upper die 6 are combined, where (a) shows the state before the combination and (b) shows the state after the combination.

  In the following description, for convenience, the lower die 5 and the upper die 6 are arranged in the vertical direction so that the lower die 5 is on the lower side, and the first and second insulated wires are placed on the lower die 5. Although the case where the upper mold 6 is moved downward and the lower mold 5 and the upper mold 6 are aligned after the placement of the lower mold 5 and the upper mold 6 will be described. Absent.

  The mold resin portion 3 of the cable 1 with mold resin is formed by molding using a mold 4. The mold 4 includes a lower mold 5, an upper mold 6, and an auxiliary mold 7. The lower mold 5 has a first lower groove 50a in which a part of the first insulated wire 11 is accommodated, and a second lower groove 50b in which a part of the second insulated wire 12 is accommodated. Is formed. The lower mold 5 is provided with first to third protrusions 51 to 53. The first lower concave groove 50a and the second lower concave groove 50b have an arc shape in the cross section perpendicular to the extending direction.

  Of the first to third protrusions 51 to 53, the first protrusion 51 and the second protrusion 52 sandwich the first insulated wire 11 partially accommodated in the first lower groove 50a. Is provided. Moreover, the 2nd protrusion 52 and the 3rd protrusion 53 are provided in the position which pinches | interposes the 2nd insulated wire 12 in which one part was accommodated in the 2nd lower side ditch | groove 50b. In other words, the second protrusion 52 is provided between the first lower groove 50 a and the second lower groove 50 b, and the first lower groove 50 is provided between the second protrusion 52 and the second protrusion 52. A first protrusion 51 is provided at a position sandwiching 50 a, and a third protrusion 53 is provided at a position sandwiching the second lower groove 50 b between the second protrusion 52 and the second protrusion 52.

  The first and second lower grooves 50a and 50b and the first to third protrusions 51 to 53 extend in parallel with each other. In the present embodiment, the first lower groove 50a is sandwiched between the first protrusion 51 and the second protrusion 52 over the entire extending direction, and the second lower groove 50b extends. It is sandwiched between the second protrusion 52 and the third protrusion 53 over the entire existing direction. That is, the lengths of the first to third protrusions 51 to 53 are the same as the lengths of the first and second lower grooves 50a and 50b, and the first to third protrusions 51 to 53 are The first and second insulated wires 11 and 12 of the portion accommodated in the first and second lower concave grooves 50a and 50b extend so as to sandwich the entire portion thereof.

  However, the length is not limited to this, and the lengths of the first to third protrusions 51 to 53 may be shorter than the lengths of the first and second lower grooves 50a and 50b. In this case, the first and second lower grooves 50a and 50b are partially sandwiched between the second protrusion 52 and the first and third protrusions 51 and 53 in the extending direction. . In addition, the first to third protrusions 51 to 53 may be cut out in regions excluding both end portions in the extending direction. In this case, the 1st thru | or 3rd protrusions 51-53 pinch | interpose the 1st insulated wire 11 and the 2nd insulated wire 12 in the part except the notched area | region.

  The lower mold 5 is formed with a first lower cavity 5a for forming the accommodating portion 30 of the mold resin portion 3 and a second lower cavity 5b for forming the flange portion 31 of the mold resin portion 3. Has been. In addition, the lower mold 5 is formed with a housing space 5c for housing the auxiliary mold 7. The first lower cavity 5a, the second lower cavity 5b, and the accommodation space 5c are formed so as to be recessed downward from the mating surface 500 of the lower mold 5 with the upper mold 6 and communicate with each other. The mating surface 500 is a flat surface perpendicular to the relative movement direction of the lower mold 5 and the upper mold 6.

  Further, the lower mold 5 is formed with a concave groove 501 that constitutes a molten resin injection hole together with a concave groove 601 of the upper mold 6 described later. The concave groove 501 is formed so as to be recessed downward in a semicircular cross section from the mating surface 500, and one end in the longitudinal direction thereof is opened to the first lower cavity 5 a and the other end is opened to the outside of the lower mold 5. ing.

  The upper mold 6 includes first and second protrusions 61 and 62 that are fitted between the first to third protrusions 51 to 53 of the lower mold 5. The first protrusion 61 is fitted between the first protrusion 51 and the second protrusion 52, and the second protrusion 62 is interposed between the second protrusion 52 and the third protrusion 53. Mated. The upper mold 6 is formed with a housing groove 63 for housing the first to third protrusions 51 to 53 of the lower mold 5 when combined with the lower mold 5. The housing groove 63 includes a first housing groove 63 a that houses the first protrusion 51, a second housing groove 63 b that houses the second protrusion 52, and a third housing groove 63 c that houses the third protrusion 53. Consists of. The first and second protrusions 61 and 62 and the first to third receiving grooves 63a, 63b, and 63c extend in parallel with each other.

  A first upper concave groove 60a that is opposed to the first lower concave groove 50a with the first insulated wire 11 interposed therebetween is formed on the tip surface (lower end surface) of the first protrusion 61. . In addition, a first upper concave groove 60b that is opposed to the second lower concave groove 50b with the second insulated wire 12 interposed therebetween is formed on the distal end surface (lower end surface) of the second protrusion 62. ing. When the lower mold 5 and the upper mold 6 are combined, as shown in FIG. 6 (b), a part of the first insulated wire 11 in the longitudinal direction has a first lower groove 50a and a first upper groove. While being accommodated in the groove 60a, a part of the second insulated wire 12 in the longitudinal direction is accommodated in the second lower concave groove 50b and the second upper concave groove 60b. As for the 1st upper side ditch 60a and the 2nd upper ditch | groove 60b, the inner surface shape in the cross section perpendicular | vertical to the extension direction is circular arc shape.

  The upper mold 6 is formed with a first upper cavity 6 a for forming the accommodating portion 30 of the mold resin portion 3 and a second upper cavity 6 b for forming the flange portion 31 of the mold resin portion 3. Yes. In addition, the upper mold 6 is formed with a housing space 6 c for housing the auxiliary mold 7. The first upper cavity 6a, the second upper cavity 6b, and the accommodation space 6c are formed so as to be recessed upward from the mating surface 600 of the upper mold 6 with the lower mold 5 and communicate with each other. The mating surface 600 of the upper mold 6 is a flat surface perpendicular to the relative movement direction of the lower mold 5 and the upper mold 6. When the lower mold 5 and the upper mold 6 are combined, the mating surface of the upper mold 6 600 and the mating surface 500 of the lower mold 5 are brought into contact with each other in a planar shape.

  Further, the upper mold 6 is provided with a concave groove 601 that constitutes a molten resin injection hole together with the concave groove 501 of the lower mold 5. The concave groove 601 is formed so as to be recessed upward from the mating surface 600 in a semicircular cross section, and one end in the longitudinal direction thereof is opened to the first upper cavity 6 a and the other end is opened to the outside of the upper mold 6. . When the lower mold 5 and the upper mold 6 are combined, the concave groove 501 of the lower mold 5 and the concave groove 601 of the upper mold 6 form an injection hole having a circular cross section.

  The auxiliary die 7 has a cylindrical shape having an outer diameter corresponding to the inner diameter of the insertion hole 310 of the flange portion 31, and a part of the axial direction is accommodated in the accommodating space 5 c of the lower die 5 and the accommodating space 6 c of the upper die 6. The The distal end of the auxiliary mold 7 in the axial direction is accommodated in the second lower cavity 5b and the second upper cavity 6b.

  Next, a method of manufacturing the cable 1 with a molded resin using the lower mold 5, the upper mold 6, and the auxiliary mold 7 will be described.

  The cable 1 with the molded resin is formed between the lower mold 5 and the first arrangement process of arranging a part of the first insulated wire 11 and the second insulated wire 12 led out from the sheath 10 on the lower mold 5. In a state where the second placement step of placing the upper die 6 so as to sandwich a part of the first insulated wire 11 and the second insulated wire 12 and the lower die 5, the upper die 6, and the auxiliary die 7 are combined. The mold resin part 3 is manufactured by the injection step of injecting molten resin into the first lower cavity 5a, the second lower cavity 5b, the first upper cavity 6a, and the second upper cavity 6b. .

  In the injection step, a part of the first insulated wire 11 in the longitudinal direction is accommodated in the first lower groove 50a and the first upper groove 60a, and the length of the second insulated wire 12 in the longitudinal direction. A part of the molten resin is accommodated in the second lower concave groove 50b and the second upper concave groove 60b, and the sensor 2 is accommodated in the first lower cavity 5a and the first upper cavity 6a. Is injected.

  In the first arrangement step, the first insulated wire 11 and the second insulated wire 12 are guided by the first to third protrusions 51 to 53 of the lower mold 5, and the first lower groove 50 a and the second 2 is accommodated in the lower concave groove 50b. That is, the first to third protrusions 51 to 53 guide the first insulated wire 11 and the second insulated wire 12 to the first lower groove 50a and the second lower groove 50b. Function as.

  As shown in FIG. 6A, the first protrusion 51 has an inclined surface 51 a that faces the second protrusion 52. The third protrusion 53 has an inclined surface 53 a that is opposite to the first protrusion 51 and faces the second protrusion 52. The second protrusion 52 has an inclined surface 52 a that faces the first protrusion 51 and an inclined surface 52 b that faces the third protrusion 53. These inclined surfaces 51 a, 52 a, 52 b and 53 a are inclined with respect to the relative movement direction of the lower mold 5 and the upper mold 6, and the inclined surfaces 51 a of the first protrusions 51 and the inclined surfaces 52 a of the second protrusions 52. And the interval between the inclined surface 53a of the third protrusion 53 and the inclined surface 52b of the second protrusion 52 are the upper side (the first lower groove 50a and the second lower groove 50b). The other side) is wider. Accordingly, the first insulated wire 11 can be easily accommodated in the first lower recessed groove 50a, and the second insulated wire 12 can be easily accommodated in the second lower recessed groove 50b.

Further, as shown in FIG. 6A, the outer diameter of the first insulated wire 11 is D ₁ , and the minimum value of the distance between the inclined surface 51a of the first protrusion 51 and the inclined surface 52a of the second protrusion 52 is shown. the _{w 1,} when the inner diameter of the first lower recessed grooves 50a and _{d 1,} is equivalent to the _{D 1} and _{d 1, w 1} is smaller than _{D 1} and _{d 1.} This dimension setting makes it difficult for the first insulated wire 11 accommodated in the first lower groove 50a to come out of the first lower groove 50a.

Similarly, the outer diameter of the second insulated wire 12 is D ₂ , the minimum distance between the inclined surface 53 a of the third protrusion 53 and the inclined surface 52 b of the second protrusion 52 is w ₂ , and the third lower side When the inner diameter of the recessed groove 50b to _{d 2,} is equivalent to the _{D 2} and _{d 2, w 2} is less than _{D 2} and _{d 2.} This dimension setting makes it difficult for the second insulated wire 12 accommodated in the second lower concave groove 50b to come out of the second lower concave groove 50b.

  The first insulated wire 11 and the second insulated wire 12 are pushed into the first lower groove 50a and the second lower groove 50b, respectively, in the first arrangement step. This operation may be performed manually by an operator or may be performed automatically by a molding machine. In the injection step, the molten resin injected into the first lower cavity 5a, the second lower cavity 5b, the first upper cavity 6a, and the second upper cavity 6b is solidified, so that the mold resin Part 3 is molded.

(Effect of embodiment)
According to the embodiment described above, the first insulated wire 11 and the second insulated wire 12 are formed between the first to third protrusions 51 to 53 in the first arrangement step. By being accommodated in the side ditch 50a and the second lower ditch 50b, the first insulated wire 11 and the second insulated wire 12 are placed between the lower mold 5 and the upper mold 6 in the second arrangement step. Occurrence of biting during pinching can be suppressed. That is, the first insulated wire 11 detached from the first lower groove 50a or the second insulated wire 12 detached from the second lower groove 50b is connected to the mating surface 500 of the lower mold 5 and the upper mold 6. It is restrained that it is pinched | interposed between the mating surfaces 600. As a result, the yield can be improved.

  In the present embodiment, since the first to third protrusions 51 to 53 extend in parallel with the first lower groove 50a and the second lower groove 50b, for example, the upper mold 6 Compared with the case where the boss-like projections projecting toward the first lower concave groove 50a and the second lower concave groove 50b are provided in the vicinity of the first insulated wire over a long range. 11 from the first lower groove 50a and the second insulated wire 12 from the second lower groove 50b can be suppressed. In particular, in the present embodiment, the first to third protrusions 51 to 53 sandwich the first lower concave groove 50a and the second lower concave groove 50b over the entire extending direction. Since it is provided, it is possible to reliably prevent the first insulated wire 11 and the second insulated wire 12 from coming out.

  Moreover, in this Embodiment, the 1st insulated wire 11 and the 2nd insulated wire 12 are the front-end | tips of each of the 1st protrusion 61 and the 2nd protrusion 61 over the predetermined range of the longitudinal direction. Since the first upper concave groove 60a and the second upper concave groove 60b formed in the surface, and the first lower concave groove 50a and the second lower concave groove 50b are accommodated, the first insulating groove The electric wire 11 and the second insulated wire 12 are securely held, and the first insulated wire 11 and the second insulated wire 12 are prevented from moving in the longitudinal direction due to the flow pressure of the molten resin.

(Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, each reference numeral in the following description does not limit the constituent elements in the claims to members or the like specifically shown in the embodiment.

[1] A plurality of insulated wires (first messy wire 11 and second insulated wire 12) formed by covering a linear conductor with an insulator, and ends of the plurality of insulated wires (11, 12) Mold resin that covers at least a part of the electronic component (sensor 2) connected to the part and the electronic component (2) in the insulated wire (11, 12) and covers at least a part of the electronic component (2) Production of a cable (1) with a mold resin, wherein the mold resin part (3) is formed using a mold (4) having a part (3) and having an upper mold (6) and a lower mold (5) It is a method, Comprising: The 1st arrangement | positioning process which arrange | positions a part of said insulated wire (11) to the said lower mold | type (5), and one of the said insulated wires (11, 12) between the said lower mold | type (5). A second arrangement step of arranging the upper mold (6) so as to sandwich the portion, and the insulated wires (11, 12) The lower groove (first lower groove 50a and second lower groove 50b) formed in the lower mold (5) and the upper groove formed in the upper mold (6). Cavities (5a, 5b, 5b) formed between the lower mold (5) and the upper mold (6) in a state of being accommodated in the first upper concave groove 60a and the second upper concave groove 60b). 6a, 6b), and injecting the molten resin into the first arrangement step, the insulated wires (11, 12) are provided with guide portions (first through first) provided in the lower mold (5). The manufacturing method of the cable (1) with a mold resin guided by the third protrusions 51 to 53) and accommodated in the lower concave grooves (50a, 50b).

[2] The lower mold (5) has, as the guide portion, a plurality of protrusions (51) provided at positions sandwiching the insulated wires (11, 12) housed in the lower concave grooves (50a, 50b). To 53), the method for producing a cable (1) with a molded resin according to the above [1].

[3] The method for manufacturing the cable (1) with a molded resin according to [2], wherein the plurality of protrusions (51 to 53) extend in parallel with the lower concave groove (50a, 50b). .

[4] The upper mold (6) has protrusions (first protrusions 61 and second protrusions 62) fitted between the plurality of protrusions (51 to 53), and the protrusions The manufacturing method of the cable (1) with a molded resin according to the above [3], wherein the upper concave groove (60a, 60b) is formed on the tip surface of the strip (61, 62).

[5] The plurality of protrusions (51 to 53) extend so as to sandwich the insulated wires (11, 12) of the portion accommodated in the lower concave grooves (50a, 50b) over the whole. The manufacturing method of the cable (1) with a mold resin as described in said [3] or [4].

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

1 ... Cable with resin 2 ... Sensor (electronic component)
DESCRIPTION OF SYMBOLS 3 ... Mold resin part 4 ... Mold 5 ... Lower mold 6 ... Upper mold 11 ... 1st insulated wire 12 ... 2nd insulated wires 51-53 ... 1st thru | or 3rd protrusion (guide part)
61 ... 1st protrusion 62 ... 2nd protrusion 50a, 50b ... Lower groove 60a, 60b ... Upper groove

Claims (5)

A plurality of insulated wires formed by covering a linear conductor with an insulator, an electronic component connected to an end portion of the plurality of insulated wires, and covering at least a part of the electronic component and the insulated wires in the insulated wire A method for producing a cable with a molded resin, comprising a mold resin portion for molding a connection portion with an electronic component, and wherein the mold resin portion is formed using a mold having an upper mold and a lower mold,
A first arrangement step of arranging a part of the insulated wire in the lower mold;
A second arrangement step of arranging the upper mold so as to sandwich a part of the insulated wire between the lower mold and the lower mold;
A part of the insulated wire is formed between the lower mold and the upper mold in a state where a part of the insulated wire is accommodated in a lower groove formed in the lower mold and an upper groove formed in the upper mold. An injection process for injecting molten resin into the cavity,
In the first arrangement step, the insulated wire is guided by a guide portion provided in the lower mold and is accommodated in the lower concave groove.
Manufacturing method of cable with mold resin. The lower mold has, as the guide portion, a plurality of protrusions provided at positions sandwiching the insulated wire housed in the lower concave groove.
The manufacturing method of the cable with a mold resin of Claim 1. The plurality of protrusions extend in parallel with the lower concave groove,
The manufacturing method of the cable with a mold resin of Claim 2. The upper mold has a ridge fitted between the plurality of protrusions, and the upper concave groove is formed on a tip surface of the ridge.
The manufacturing method of the cable with a mold resin of Claim 3. The plurality of protrusions extend so as to sandwich the insulated electric wire of the portion accommodated in the lower concave groove,
The manufacturing method of the cable with a mold resin of Claim 3 or 4.

Images