KR102215877B1 - Method of terminal insert injection molding for indoor lighting lamp of vehicle - Google Patents

Abstract

The present invention relates to a vehicle interior lighting insert injection molding method, and in particular, to a vehicle interior lighting insert injection molding method for manufacturing an integrated terminal that supplies power when an LED lamp for interior lighting of a vehicle is lit by an insert injection molding method.

Description

Insert injection molding method for vehicle interior lighting {METHOD OF TERMINAL INSERT INJECTION MOLDING FOR INDOOR LIGHTING LAMP OF VEHICLE}

The present invention relates to a vehicle interior lighting insert injection molding method for manufacturing an integrated terminal for supplying power when an LED lamp for interior lighting of a vehicle is turned on by an insert injection molding method.

In general, various vehicles, including passenger cars, vans, and heavy-duty vehicles, are equipped with an indoor lighting device, and in particular, an indoor lighting lamp for a vehicle for the purpose of reading, etc. is provided on an indoor ceiling of a vehicle such as a passenger car or a van.

As disclosed in Korean Patent Registration No. 10-1509373, such an interior lighting lamp for a vehicle includes a housing embedded in a vehicle body ceiling, an upper cover covering the housing and exposed to the interior, and a light emitting module installed on the upper cover.

In addition, it includes a push button provided on one side of the upper cover and a terminal provided in the housing to provide power supplied from the vehicle itself to the light emitting module when the push button is pressed by a user.

On the other hand, as shown in FIG. 1, the terminal 10 is an integrated terminal 10 composed of several to form a circuit pattern, and the integrated terminal 10 is inserted in a plastic housing during injection molding, and insert injection molding together with the housing. do.

Therefore, when inserting a plurality of terminals 11 to 15 separated from each other into an injection molding mold, if each terminal is sequentially transferred, the molding time increases. Otherwise, if several terminals are inserted at the same time, several input devices are required, which is expensive and large. There is a problem that requires equipment.

In addition, when inserting and setting a plurality of terminals (11 to 15) into the injection molding mold, it is difficult to set each terminal to the correct position, and the posture is changed even after the presetting is completed. There is a problem with this occurring.

Korean Patent Registration No. 10-1509373

The present invention is to solve the above-described problem, when transferring an integrated terminal composed of a plurality of terminals to an injection molding mold, the interior light insert for a vehicle in which the terminals maintain a static posture when transferred to an injection molding mold. It is intended to provide an injection molding method and interior lighting for vehicles molded by the injection molding method.

To this end, the present invention provides an insert injection molding method for a vehicle interior lighting including an integrated terminal, a housing in which the integrated terminal is insert injection-molded as an insert, a cover covering the housing, and a light emitting module installed on the cover, A terminal preparation step of preparing an integrated terminal including a plurality of terminals separated from each other and a bridge connecting the plurality of terminals to each other; An inserting step of inserting an integrated terminal including the terminal and a bridge into a mold having a molding pattern corresponding to the shape of the housing; An injection molding step of injection molding by injecting a molten material used as a material of the housing into the mold; And a bridge removal step of cutting and removing a bridge among the integrated terminals after pulling out the housing from which the integrated terminal is inserted and ejected from the mold.

In this case, the terminal preparation step is preferably a step of integrally forming the integrated terminal including the plurality of terminals and bridges by cutting one metal plate.

In addition, the bridge forming in the terminal preparation step may include at least one interconnecting bridge connecting the plurality of terminals adjacent to each other; And an outer bridge formed along an outer periphery of the plurality of terminals and connected to the terminal from the outside. It is preferable that it is a molding step comprising any one or more of.

In addition, the injection molding step includes forming a bridge exposed hole through which the bridge is exposed to the outside after the insert injection as the melt is injected into a portion of the housing other than the portion with the inserted bridge, and the bridge It is preferable that the removing step includes cutting the bridge exposed to the outside through the bridge exposure hole while the cutting device passes through the bridge exposure hole.

Meanwhile, the interior lighting lamp for a vehicle according to the present invention is characterized by assembling the cover and the light emitting module to an integrated terminal and a housing integrally molded through the insert injection molding method as described above.

In the present invention as described above, a plurality of terminals separated from each other are connected by a bridge so that each terminal is transferred and set integrally with the molding frame in a state that maintains a static posture, and after insert injection, only the bridge is removed to provide the unique function of the terminal. to provide.

Therefore, when an integrated terminal composed of a plurality of terminals is transferred to an injection molding mold, it is transferred all at once, and when the terminals are set in the injection molding mold, the terminals maintain a static posture, thereby reducing manufacturing time and providing high-quality and high-precision injection molded products.

1 is a view showing a terminal for a vehicle interior lighting lamp according to the prior art.
2 is a view showing an indoor lighting lamp for a vehicle according to the present invention.
3 is a diagram illustrating a mounting state of electrical components installed in the terminal of FIG. 2.
4 is a flow chart showing a method for injection molding an interior lighting lamp for a vehicle according to the present invention.
5 is a diagram showing an integrated terminal according to an embodiment of the present invention.
6 is a diagram showing an integrated terminal according to another embodiment of the present invention.
7 is a view showing an integrated terminal and a housing insert injection-molded according to FIG. 4.
8 is a view showing a state in which the bridge is cut and removed among the integrated terminals of FIG. 7.

Hereinafter, with reference to the accompanying drawings, a vehicle interior lighting insert injection molding method according to a preferred embodiment of the present invention and an interior lighting lamp for a vehicle molded thereby will be described in detail.

First, before describing the method for injection molding an interior lighting lamp for a vehicle according to the present invention, a structure of the interior lighting lamp 100 for a vehicle to which the present invention is applicable as an example will be described.

Figure 2 (a) is a perspective view of one side of the interior lighting lamp for a vehicle to which the present invention is applied, Figure 2 (b) is a bottom perspective view showing the housing, and Figure 2 (c) is a perspective view as viewed from the cable connector side of the housing .

As shown, the vehicle interior lighting 100 includes an integrated terminal 110, a housing 120 in which the integrated terminal 110 is insert injection-molded as an insert, a cover 130 covering the housing 120, and the It includes a light emitting module 140 installed on the cover 130.

In this case, the integrated terminal 110 is made of an electrically conductive material such as metal, as described again below. In particular, a plurality of individual terminals 111 separated from each other are insert injection molded together with the housing 120 in a state connected to each other by a bridge 112.

A cable connector 121 is provided at one end of the housing 120. The cable connector 121 is composed of, for example, a female connector, and the end lead of the integrated terminal 110 protrudes to the outside. Accordingly, the male connector provided in the vehicle is connected to receive power.

The housing 120 is embedded in the ceiling inside the vehicle, while a push button PB is provided on the cover 130 exposed to the interior during installation. The frame FR between the cover 130 and the housing 120 constitutes the ceiling plate of the vehicle upon assembly.

The light emitting module 140 is a light source that emits light toward the interior of the vehicle and illuminates the interior. For example, the lens cover 141 provided in the center of the cover 130, the PCB 142 and the PCB 142 described later. ) And the LED 143 mounted on it.

Therefore, when the user reaches out to the ceiling in the vehicle interior and presses the push button PB, power supplied through the male connector embedded in the vehicle and the female connector provided in the housing 120 is supplied to the light emitting module 140. , Indoor lighting is provided.

A plurality of bridge exposed holes 122 are formed on the bottom of the housing 120. The bridge exposed holes 122 correspond to the positions of the bridge 112 among the integrated terminals 110, respectively. Therefore, since the bridge 112 is exposed to the outside through the bridge exposure hole 122, it is possible to cut and remove the bridge 112 after injection molding.

The bridge 112 connecting the separated individual terminals 111 does not serve as a terminal, and if left as it is, the terminals 111 are short-circuited and cannot serve as a circuit pattern, so after insert injection molding The bridge 112 is removed.

As shown in FIG. 2, as the bridge 112 is removed, a plurality of terminals 111 separated from each other for circuit design purposes form a circuit pattern, so that the PCB 142 is connected to the terminal 111 and installed, the PCB ( LED 143 is mounted on 142. In addition, the switch module SW is also connected to the terminal 111.

Accordingly, when the push button PB provided on the cover 130 is pressed, the switch module SW operates to start supplying power, and the LED 143 mounted on the PCB 142 is emitted. The emitted light is irradiated into the vehicle interior through the lens cover 141 described above.

Hereinafter, an injection molding method for an interior lighting lamp for a vehicle according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figure 4, the vehicle interior lighting insert injection molding method according to the present invention is a terminal preparation step (S110), insert step (S120), injection molding step (S130), bridge removal step (S140) and parts assembly step (S150) Includes.

At this time, in the terminal preparation step (S110), the integrated terminal 110 inserted into the housing 120 is manufactured and prepared. The integrated terminal 110 is made of an electrically conductive metal material and includes a plurality of terminals (ie, single terminals) 111 separated from each other and a bridge 112 connecting the terminals 111 to each other.

As shown in (a) and (b) of Figure 5, for example, the integrated terminal 110 includes five separate single terminal 111 from each other, and the five terminals 111 separated from each other in this way They are connected to each other through eight bridges 112.

The bridge 112 connected in the inner space between the adjacent terminals 111 as described above is hereinafter referred to as an interconnecting bridge 112-I. At least one interconnecting bridge 112-I is provided according to the number of single terminal 111 determined according to a circuit pattern.

That is, the interconnecting bridge 112-I according to the number of individual terminals 111 according to the circuit pattern, the number of basic connections, and the number of parts that require additional connection due to the long length of the single terminal 111 formed of a thin plate. The number of is also adjusted.

However, as shown in FIG. 6, the bridge 112 is formed along the outer circumference of the plurality of terminals 111 in addition to the interconnecting bridge 112-I type, and is connected to the terminal 111 from the outer bridge 112- O) may apply.

The outer bridge 112-O, for example, is continuously provided in a quadrangular shape along the outer circumference of the terminal 111 and is connected to the terminal 111 through a connecting lead 112-O' extending toward the inner side. .

Further, when all the terminals 111 cannot be connected with only the connection leads 112-O' according to the number and arrangement of the single terminal 111, the above-described interconnecting bridge 112-I is applied together.

As a preferred embodiment, the integrated terminal 110 includes a plurality of terminals 111 and bridges 112: 112-I, 112-O by cutting a thin metal plate with a punching machine or a cutter. It saves manufacturing time and cost by molding it.

Next, in the inserting step (S120), the integrated terminal 110 prepared as described above is put into the injection molding mold and set. The terminal 111 and the terminal 111 in the mold having a molding pattern corresponding to the shape of the housing 120 are formed. The integrated terminal 110 including the bridge 112 is inserted.

At this time, a plurality of terminals 111 are connected by an interconnecting bridge 112-I and/or an outer bridge 112-O, so that they can be transferred with one supply device at a time during transfer, and are set on the mold Poor posture of the terminals 111 or poor contact between the terminals 111 are prevented.

As is well known, the injection mold is usually composed of a lower mold and an upper mold, and the lower and upper molds have an intaglio pattern corresponding to the housing 120 (some parts may be embossed). .

Therefore, when the integrated terminal 110 is placed on the intaglio pattern of the lower mold and the upper mold is lowered, a cavity corresponding to the shape of the housing 120 in the interior between the sealed lower mold and the upper mold , A mold space is formed.

Next, the injection molding step (S130) is a step of injection-molding the housing 120 into which the integrated terminal 110 is inserted, and injecting a melt, which is the material of the housing 120, into the assembled mold (S130a) (S130b). ), cool and cure for a certain period of time to perform injection molding.

For example, by lowering the upper molding frame onto the lower molding frame on which the integrated terminal 110 is seated, a cavity is formed therein (S130a), and a synthetic resin such as plastic is injected into the cavity through an injection device (S130b) to be injection molded. do.

7 shows an insert injection molding in which the integrated terminal 110 of the present invention is inserted into the housing 120. As an example, the integrated terminal 110 is injection-molded integrally on the bottom surface of the housing 120.

Accordingly, as described with reference to FIG. 3, a power line and a terminal lead are provided to the integrated terminal 110, and the PCB 142 having a resistor (divider) and an LED 143 mounted thereon is connected. In addition, the switch module SW is also connected to the outer portion of the terminal 111.

Next, in step S140 of removing the bridge, the bridge 112 that does not serve as the terminal 111 is removed. Since the bridge 112 is to assist insert injection molding, the bridge 112 is removed to supply the finished product.

To this end, in the bridge removal step (S140), the integrated terminal 110 is inserted-injected from the injection molding mold and the housing 120 is pulled out (S140a), and then the bridge 112 of the integrated terminal 110 is cut and removed (S140b). )do. The bridge 112 is removed with a punching machine or cutting machine.

At this time, when the interconnecting bridge 112-I is applied, all the interconnecting bridges 112-I are cut and removed, and in the case of the outer bridge 112-O, a connection lead directly connected to the terminal 111 ( 112-O') only needs to be removed.

Of course, the outer bridge 112-O disposed around the outer circumference of the terminal 111 can also be removed, but the outer bridge 112-O excluding the connection lead 112-O' is integrated into the housing 120 body. Is ejected. Therefore, since the inherent function of the terminal 111 is not affected, it is removed only when necessary such as exposure to the outside of the housing 120.

However, in the injection molding step (S130) as described above, the melt is injected into only the portion of the housing 120 except for the portion with the inserted bridge 112 due to the shape of the mold. Through this, a bridge exposure hole 122 through which the bridge 112 is exposed to the outside after insert injection is formed.

Therefore, in the bridge removal step (S140), as the cutting blade of a cutting device such as a punching machine or a cutter passes through the bridge exposure hole 122, the bridge 112 exposed to the outside through the bridge exposure hole 122 is cut. Enables cutting at once.

Next, in the component assembly step (S150), the frame (FR) constituting a part of the vehicle interior ceiling plate in the housing 120 in which the integrated terminal 110 from which the bridge 112 is removed is insert injection-molded and the cover exposed to the vehicle interior Cover 130 and assemble.

At this time, the light emitting module 140, etc. are assembled inside the cover 130, and the lens cover 141 and the push button (PB), etc. are pre-assembled on the outside of the cover 130, so when the cover 130 is assembled These parts are also assembled together.

Accordingly, the interior lighting lamp for a vehicle according to the present invention comprises the cover 130 and the light emitting module 140 in addition to the integrated terminal 110 and housing 120 integrally molded through the insert injection molding method as described above. do.

In the above, specific embodiments of the present invention have been described above. However, the spirit and scope of the present invention is not limited to these specific embodiments, and various modifications and variations are possible within the scope of not changing the subject matter of the present invention. Anyone who has it will understand.

Therefore, the embodiments described above are provided to completely inform the scope of the invention to those of ordinary skill in the technical field to which the present invention belongs, and should be understood as illustrative and non-limiting in all respects, The invention is only defined by the scope of the claims.

110: integrated terminal
111: (single product) terminal
112 (112-I, 112-O): Bridge
120: housing
121: cable connector
122: bridge exposed hole
130: cover
140: light-emitting module
141: lens cover
142: PCB
143: LED
PB: push button
FR: Frame (ceiling plate)

Claims (5)

An integrated terminal 110, a housing 120 in which the integrated terminal 110 is insert injection-molded as an insert, a cover 130 covering the housing 120, and a light emitting module 140 installed on the cover 130 In the vehicle interior lighting insert injection molding method comprising,
A terminal preparation step (S110) of preparing an integrated terminal 110 made of a metal material and including a plurality of terminals 111 separated from each other and a bridge 112 connecting the plurality of terminals 111 to each other;
An insert step (S120) of inserting the integrated terminal 110 including the terminal 111 and the bridge 112 into a mold having a forming pattern corresponding to the shape of the housing 120;
An injection molding step (S130) of injection molding by injecting a melt, which is a material of the housing 120, into the mold; And
A bridge removal step (S140) of cutting and removing the bridge 112 among the integrated terminals 110 after drawing out the housing 120 in which the integrated terminal 110 is inserted-injected from the mold;
The terminal preparation step (S110) is a step of integrally forming the integrated terminal 110 including the plurality of terminals 111 and the bridge 112 by cutting one metal plate, wherein the forming of the bridge 112 At least one interconnecting bridge 112-I connecting between the plurality of adjacent terminals 111 and a connection lead 112- formed along the outer circumference of the plurality of terminals 111 and extending toward the inner side It includes forming an outer bridge 112-O connected to the terminal 111 by O');
The injection molding step (S130) is a bridge exposed hole through which the bridge 112 is exposed to the outside after the insert injection as a melt is injected into a portion of the housing 120 except for a portion with the inserted bridge 112 Including the step of forming (122), the bridge removing step (S140) is the bridge 112 exposed to the outside through the bridge exposure hole 122 while the cutting device passes through the bridge exposure hole 122 And cutting the;
In the bridge removal step (S140), all the interconnecting bridges 112-I are cut, and the outer bridge 112-O is not cut, but only the connection lead 112-O' is cut, and the connection lead The outer bridge (112-O) excluding (112-O') is integrally injected into the housing (120) and remains integrally with the insert injection molding method for a vehicle interior lighting lamp. delete delete delete delete

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