KR102030752B1 - manufacturing method for armrest with heating function using heating wire arranged in zigzag - Google Patents

Abstract

The present invention relates to a method for manufacturing an armrest having a heat generating function using heat generating yarns arranged in a zigzag. According to the present invention, a heat generating yarn is embedded by arranging the heating yarns in a zigzag in advance in a mold and injecting a resin to inject the substrate. The prepared base material can be manufactured integrally, and the troublesome process of attaching a separate heating pad to the base material can be solved.

Description

Manufacturing method for armrest with heating function using heating yarn arranged in a zigzag {manufacturing method for armrest with heating function using heating wire arranged in zigzag}

The present invention relates to a method for manufacturing an armrest having a heat generating function using heat generating yarns arranged in a zigzag, and more particularly, to a technology for manufacturing a heat generating yarn and a substrate in a single process by an insert injection method.

Most vehicles are equipped with an air conditioning system, which warms the indoor air of the vehicle in winter and can operate in a warm environment. However, since the air conditioning system utilizes the heat of the heated engine, a predetermined time is required until the engine is heated after the vehicle is boarded, and when the engine is operated for a long time, it may cloud the air in the vehicle and cause drowsiness.

For this purpose, auxiliary heating means are used, which generate heat at the part in contact with the occupant's body to conduct heat directly to the body. The most representative is a thermal sheet with a built-in heating wire, and recently, an armrest having a heating function has also been developed.

Republic of Korea Patent Publication No. 10-2015-0075784 (2015.07.06. 'Vehicle armrest') deals with the technology of the vehicle armrest to enable conductive heating by inserting a heating pad having a heating wire between the skin and the core. .

However, the conventional heating armrest has a problem in that the manufacturing process is complicated because the heating pad has to be separately manufactured and then attached to the substrate.

The present invention has been made to solve the problems of the prior art as described above, by providing a technology to simplify the manufacturing process by integrally manufacturing so that the heating element is embedded in the substrate when injection molding the base of the armrest. Its purpose is to.

In order to achieve the above object, a method of manufacturing an armrest having a heating function using a heating yarn arranged in a zigzag according to the present invention includes the steps of (a) disposing a heating yarn in an injection space formed in a lower mold and injection of the lower mold. (B) injecting a resin into the space and cooling the resin injected into the lower mold, and then (c) drawing out the substrate having the heat generating yarn therein, wherein the plurality of catches are formed in the injection space of the lower mold. The jaw is formed, and the step (a), the position is fixed to the hanging jaw formed in the lower mold, and the position is fixed, the injection mold of the lower mold is formed with at least one of the milpin drawing hole, the milfin drawing hole There is provided a mil pin for pushing out the substrate cooled by the resin, the mil pin is formed with an insertion hole in a form penetrating the side, the step (a) And inserting the end of the heat generating yarn into the insertion hole of the mil fin, and further comprising the step (d) after the step (a), lowers the mil fin so that the end of the heat generating yarn leaves the outside of the injection space. By including, the end of the heating yarn is in the state of being pinned around the lower mold and the mil pin in the pin-out hole, the position is fixed, the heating yarn is arranged in a zigzag form, the locking step is zigzag the heating yarn It is characterized in that it is provided at the point to be folded at the time of arrangement.

According to the manufacturing method of the armrest having a heat generating function using a heat generating yarn arranged in a zigzag according to the present invention, since it is possible to integrally produce a heat generating yarn in the process of molding a substrate by injecting a resin into a mold, The process is simple. That is, in the prior art, the number of steps is inevitably increased because the substrate and the heating pad have to be separately manufactured and then bonded or sealed. However, in the present invention, a separate heating yarn bonding process is not required. Will be able to produce.

In addition, since the position of the heat generating yarn can be fixed by using the latching jaw provided in the mold and the insertion hole of the mill pin, the arrangement of the heating yarn is prevented from being disturbed by the injection pressure during resin injection. Even distribution of columns is possible by placing.

In addition, it is not necessary to form a separate connection for supplying power to the heat generating yarn. That is, since the injection process is performed after inserting the end of the heat generating yarn into the insertion hole formed in the mill pin, the end of the heat generating yarn exposed naturally out of the substrate may be used as the power connection portion.

1 is a perspective view illustrating an armrest manufactured according to a method of manufacturing an armrest having a heating function using a heating yarn arranged in zigzag according to an embodiment of the present invention.
FIG. 2 is a plan view of the armrest shown in FIG. 1; FIG.
3 is a perspective view for explaining a mold for manufacturing the armrest shown in FIG.
4 and 5 are views for explaining the manufacturing process of the armrest shown in FIG.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described. However, some components irrelevant to the gist of the present invention will be omitted or compressed, but the omitted elements are not necessarily required in the present invention, and may be combined and used by those skilled in the art. Can be.

1 is a perspective view illustrating an armrest manufactured by a method of manufacturing an armrest having a heating function using a heating yarn arranged in a zigzag according to an embodiment of the present invention, and FIG. 2 is an armrest shown in FIG. Is a plan view conceptually. 1 and 2, the armrest 10 according to the embodiment of the present invention includes a substrate 11 and a heat generating yarn 12.

The base material 11 forms the basic skeleton of the armrest 10, and is produced by injection molding synthetic resin 11a such as polypropylene. In the present embodiment, only the substrate 11 in a simple flat form is shown for convenience of description, and the shape of the substrate 11 may be variously changed according to a vehicle model or an application position.

The heat generating yarn 12 is a structure which generates heat by power supply. Although the material of the heat generating yarn 12 is very diverse, in the present embodiment, a wire-type carbon yarn made of carbon nanotube material is used.

The heat generating yarn 12 is embedded in the substrate 11 and arranged in a zigzag form so as to transfer heat evenly over the entire area of the substrate 11. In addition, both ends of the heat generating yarn 12 should be used as a connecting portion 13 for supplying power. For this purpose, the connecting portion 13 at both ends of the heating yarn 12 is exposed to the outside of the substrate 11. Here, the heat generating yarn 12 is not integrally bonded or sealed to the substrate 11, but is integrally manufactured in the process of injection molding the substrate 11.

Hereinafter, a process of manufacturing an armrest having a heat generating function shown in FIGS. 1 to 2 will be described.

First, Figure 3 is a perspective view for explaining a mold used when manufacturing the armrest having a heat generating function shown in FIGS. As shown in FIG. 3, the mold includes a lower mold 20 and an upper mold 30.

The lower mold 20 is formed with an injection space 21 into which the resin 11a, which is a raw material of the substrate 11, is injected. In addition, a plurality of locking jaws 22 are formed at a predetermined position on the bottom of the injection space 21, and the pins 23 are provided on the outer side thereof.

The locking jaw 22 is provided to fix the position by hanging the heat generating yarn (12). Specifically, the locking jaw 22 is provided to correspond to the bending point when the heat generating yarns 12 are arranged in a zigzag. Referring to FIG. 2 conceptually showing a state in which the heat generating yarns 12 are arranged on the base material 11 in the armrest 10, the hooking points of the heat generating yarns 12 in the zigzag shape are held by H1 to H5 for convenience. Although indicated by the jaw position, the locking jaw 22 is provided at a point corresponding to the locking jaw position of H1 to H5 of FIG. 2 in the lower mold 20, respectively.

On the other hand, in the injection space 21 of the lower mold 20, one or more mil pin outgoing holes 25 are formed, and the mil pins 23 are seated in the mil pin outgoing holes 25 so that the up and down is possible. In this embodiment, an example in which the mil pins 23 are disposed at four corners of the injection space 21 is illustrated. That is, referring to FIG. 2, the positions where the pins 23 are installed in the lower mold 20 in correspondence to the heat generating yarns 12 disposed on the substrate 11 are indicated by P1 to P4.

The mill pin 23 operates in conjunction with the up and down of the upper mold 30, and when the resin 11a injected into the injection space 21 is cooled, the finished substrate 11 of the lower mold 20 It is provided to push upward and withdraw.

Here, the insertion hole 24 is formed in the specific mil pin 23 among the plural mil pins 23. The insertion hole 24 is formed to penetrate the side of the mill pin 23, and both ends of the heat yarn 12 are inserted into the mill pin 23 when the heat yarn 12 is disposed in the injection space 21. The holes 24 are respectively inserted. The mil pin 23 will be described later.

Hereinafter, a process of manufacturing an armrest having a heat generating function shown in FIGS. 1 and 2 by using the mold shown in FIG. 3 will be described with reference to FIGS. 4 and 5.

4 and 5 are views for explaining a process of manufacturing the armrest 10 shown in Figure 1 using the mold shown in Figure 3, specifically, Figure 4 is a locking jaw ( The heat generating yarns 12 are disposed on the basis of the formed portion 22 and the resin 11a is injected. FIG. 5 illustrates heating of the lower mold 20 based on the portion where the mill pin 23 is installed. This is for explaining the process in which the yarns 12 are arranged and the resin 11a is injected.

In order to manufacture the armrest 10, one end of the heating yarn 12 having a predetermined length is inserted into an insertion hole 24 formed in any one of the pins 23. Since the middle portion of the heat yarn 12 is arranged in a zigzag on the bottom surface of the lower mold 20, the bending point is to be caught on the locking jaw (22). Finally, the other end of the heat generating yarn 12 is inserted into the insertion hole 24 formed in the opposite mill pin 23.

2 and 3, one end of the heat generating yarn 12 is inserted into the mil pin 23 at the P1 position, and the middle portion of the heat generating yarn 12 is zigzag to hang on the engaging jaw 22 of the H1 to H5 positions. The other end of the heat generating yarn 12 was inserted into the mil pin 23 at the P4 position. In addition, the side view when the heat generating yarn 12 is caught on the locking jaw 22 can be confirmed through (a) of FIG. 4, and the side view of one end of the heat generating yarn 12 inserted into the mill pin 23. Can be confirmed through (a) of FIG.

When the arrangement of the heat generating yarn 12 is completed, the upper mold 30 descends and is in close contact with the lower mold 20. At this time, when the upper mold 30 is lowered, the mill pin 23 interlocked with the upper mold 30 is also lowered, and the end of the heating yarn 12 is inserted into the insertion hole 24 of the mill pin 23. Because of the state, the ends of the heat generating yarn 12 are pushed together to the outside of the injection space 21 as shown in Fig. 5 (b).

Then, when the resin 11a, which is a raw material of the base material 11, is injected through the resin injection hole 31 formed in the upper mold 30 as shown in FIG. 4 (b), FIGS. As shown in (c), the resin 11a is filled in the injection space 21, and thus the resin 11a is filled in the periphery of the heat generating yarn 12. At this time, the end of the heat generating yarn 12 is pushed down to the outside of the injection space 21 in accordance with the falling down of the mill pin 23, the end of the heat generating yarn 12 is not filled with the resin (11a).

On the other hand, when injecting the resin 11a through the resin injection hole 31 of the upper mold 30, the arrangement of the heat generating yarn 12 may be disturbed by the injection pressure. The arrangement position of the heat generating yarn 12 can be maintained by 22 and the pin 23.

If there is no locking jaw 22 or the mill pin 23 in the lower mold 20, the heat generating yarn 12 should be placed in a zigzag on the bottom of the injection space 21. If the resin 11a is injected in this state, the heat generating yarn 12 is swept away by the pressure into which the resin 11a is injected. In other words, it is impossible to arrange the heat generating yarn 12 for evenly distributing heat over the entire portion of the substrate 11.

However, in the present invention, since the locking jaw 22 is formed in the lower mold 20 so that the heat generating yarn 12 can be caught, the heat generating yarn 12 can be positioned even if a somewhat strong injection pressure is generated. That is, let us look at the H2 to H4 portion of the point where the heat generating yarn 12 is broken in FIG. If the resin 11a is injected at an intermediate point of the injection space 21, the injection pressure is applied in the outward direction of the injection space 21. That is, since the force acts in the H2 direction and the H4 direction from the center point in the substrate 11 of FIG. 2, the H3 portion is swept by the force applied in the H2 and H4 directions, and the H3 point can be shifted to the right in the drawing. However, since the locking jaw 22 is located in the inside of the H3 point, even if a rightward force is applied to the heat generating yarn 12 of the H3 part, the locking jaw 22 is caught, and the position can be fixed without being swept to the right anymore. . Similarly, the other bent points of the heat generating yarn 12 are prevented from being caught by the locking jaw 22 and being swept by the injection pressure.

In addition, since both ends of the heating yarn 12 are inserted into the insertion holes 24 of the mill pins 23 corresponding to the P1 and P4 points, respectively, and the mill pins 23 are lowered during the resin 11a injection process. In addition, both ends of the heat generating yarn 12 may be pinched around the lower mold 20 and the mill pin 23 in the mill pin drawing hole 25 to maintain a fixed position.

As shown in FIGS. 4C and 5C, when the resin 11a is completely injected into the injection space 21 and then the resin 11a solidifies through a predetermined cooling process, FIG. And the upper mold 30 is raised as shown in (d) of FIG. 5, and at the same time the pin (23) can also be raised while raising the solidified substrate 11 to the injection space 21.

At this time, the intermediate point of the heat generating yarn 12 is in a state surrounded by the resin 11a. Accordingly, when the resin 11a solidifies, the heat generating yarn 12 penetrates into the base 11. In other words, the heat generating yarn 12 is formed in the substrate 11. On the other hand, both ends of the heat generating yarn 12 were not affected by the resin 11a because they were inserted into the insertion hole 24 of the mill pin 23. Therefore, when the solidified base material 11 is lifted up as shown in FIG. 5 (d), even if the intermediate point of the heat generating yarn 12 is integrated with the base material 11, both ends of the heat generating yarn 12 are formed of the base material ( 11) When the substrate 11 is pulled out from the mold, both ends of the heat-generating yarn 12 may still be exposed to the outside of the substrate 11 as shown in FIG. 1.

Thus, the heat yarn 12 is built in the base material 11, and the armrest 10, which is integrally manufactured, is mounted at a position where the door armrest or the console armrest is installed, and the connecting portion 13 at both ends of the heat yarn 12 is installed. If the power is connected to, heat is generated in the heat generating yarn 12 according to a user's power supply operation later, the heat is evenly transmitted to the entire base material 11 can see the conductive heating effect.

According to an embodiment of the present invention, a method of manufacturing an armrest having a heating function using heat generating yarns arranged in a zigzag is advantageous when the heating function is applied to the armrest 10 without a wrapping process such as a skin material, but FIG. 1. It may also be sufficiently possible to wrap a separate skin material on the surface of the armrest 10 shown in FIG.

As described in detail above, according to the method of manufacturing an armrest having a heat generating function using heat generating yarns arranged in a zigzag according to the present invention, the resin 11a is injected into a mold to generate heat in the process of forming the substrate 11. Since the yarn 12 can be embedded and manufactured integrally, the manufacturing process is simple. That is, in the past, since the base 11 and the heating pad had to be separately manufactured and then glued or sewn, the number of processes is inevitably increased. However, in the present invention, a separate heating yarn 12 is not required to be bonded and the heating yarn 12 is disposed. It is possible to manufacture the heat generating armrest 10 only by a single process called injection.

In addition, since the position of the heat generating yarn 12 can be fixed by using the locking projection 22 provided in the mold and the insertion hole 24 of the mill pin 23, the heating yarn ( Since the arrangement of 12) is prevented from being disturbed, the heat generating yarns 12 are disposed in the entire region of the armrest 10, so that even distribution of heat is possible.

In addition, it is not necessary to separately form the connecting portion 13 for supplying power to the heat generating yarn 12. That is, since the injection process is performed after inserting the end of the heating yarn 12 into the insertion hole 24 formed in the mill pin 23, the end of the heating yarn 12 exposed to the outside of the substrate 11 is naturally powered. It is good to use it as the connection part 13.

Meanwhile, the method of manufacturing the armrest 10 according to the embodiment of the present invention described above is not necessarily to be utilized only for the manufacture of the armrest 10 having the heat generating yarn 12, but may be of another type having a heating function. It can also be used to make injection moldings. For example, by manufacturing the cup holder in which the heating yarn 12 is embedded by the injection method described above, it can also be used for the thermal insulation of the beverage stored in the cup holder.

In addition, although the hooking jaw 22 for fixing the position to hang the heating yarn 12 is an example that is fixed to the mold, the present invention forms a hole in which the hooking jaw can be protruded in the mold and the hooking jaw through the hole It is also possible to form a form that comes out and enters. In addition, it is also possible to form a groove in the locking jaw so that the locking jaw maintains the locking of the heat generating yarn, and the shape of the groove will be formed in a shape that does not interfere with the release of the injection molding.

Preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the claims of the present invention.

10: armrest
11: description
12: pyrogen
13 connection
H1 ~ H5: Jam Jaw Position
P1 ~ P4: Mil Pin Location
11a: resin
20: lower mold
21: injection space
22: jamming jaw
23: Milpin
24: insertion hole
25: Milpin drawer
30: upper mold
31: resin injection hole

Claims (1)

(A) disposing a heat generating yarn in the injection space formed in the lower mold;
(B) injecting a resin into the injection space of the lower mold; And
After cooling the resin injected into the lower mold, the step (c) for withdrawing the substrate in which the heating element is embedded;
A plurality of locking jaws are formed in the injection space of the lower mold,
In the step (a), the heat generating yarn is fixed to the hanging jaw formed on the lower mold.
One or more milfin drawing holes are formed in the injection mold of the lower mold, and the milfin drawing holes are provided with a milpin for pushing out the substrate cooled by the resin, and the milfin has an insertion hole formed to penetrate a side surface thereof. And
Step (a) includes the step of inserting the end of the heating yarn into the insertion hole of the mill pin,
After the step (a), by lowering the mill pin so that the end of the heating yarn is separated out of the injection space; (d) further comprising,
The end of the heating yarn is in the state of being pinched around the lower mold and the mill pin in the mill pin drawing hole is fixed position,
The heat generating yarn is arranged in a zigzag form, wherein the locking jaw is a manufacturing method of the armrest having a heat generating function using a heat generating yarn arranged in a zigzag characterized in that provided at the point to be folded when the heat generating yarn in a zigzag arrangement.

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