JP2003243105A - Capacitor, resistor-combined functional connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact functional connector that has a function of capacitor connector and also a function of resistor connector. <P>SOLUTION: A capacitor chip is fixed extending astride a first terminal 7 and a dummy terminal 4 and a resistor chip 2 is fixed extending astride another terminal (5 or 6) which is different from the above first terminal 7 or the dummy terminal 4 and the above dummy terminal 4. While the capacitor chip 1 and resistor chip 2 are connected in series, as a circuit, and while part of each terminal is protruded outside, respectively, the terminal part which is not protruded outside, the capacitor chip, and the resistor chip are resin- molded in one body. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a functional connector used for, for example, in-vehicle electrical equipment.

[0002]

2. Description of the Related Art As vehicles have become more sophisticated, various electric components have been installed in vehicles. Moreover, there are various types of vehicles. On the other hand, in order to reduce costs, standardization of control units for electrical components is in progress. With a common control unit, a functional connector that complements the function of the control unit is used to control a wide variety of electrical components.

Examples of functional connectors include diode connectors, resistor connectors, filter (capacitor) connectors and the like. The diode connector is used for current wraparound (uniformity of current direction), the resistor connector is used for load resistance adjustment (current value control), and the filter (capacitor) connector is used for noise. These connectors are required not only to exhibit their individual functions sufficiently, but also to be equipped with measures to prevent vibrations when mounted on vehicles and to maintain their characteristics against the environment.

[0004]

As described above, the above-mentioned functional connector can correspond to a single required function, but cannot independently support a plurality of functions when they are required at the same time. For example, when noise handling and current value control are required at the same time, both a filter connector and a resistor connector are required. To connect these, both male and female connectors are required, and a total of four connectors are required, so a considerable mounting space is required. In addition, the number of parts increases, leading to higher costs. This goes against the demand for smaller, lighter, space-saving and cost-reduced parts for automobiles.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a capacitor / register-combined functional connector which solves the above-mentioned problems, in which a capacitor chip is fixed over a first terminal and a dummy terminal, and A register chip is fixed across the dummy terminal and another terminal different from the first terminal and the dummy terminal, and in a circuit state, the capacitor chip and the register chip are connected in series,
It is characterized in that a part of each terminal is protruded to the outside, and a terminal portion which does not protrude to the outside, a capacitor chip, and a resistor chip are integrally resin-molded. Further, it is more preferable to include a cushioning material around the capacitor chip and the resistor chip because a structure that can withstand a sharp temperature difference due to heat generation can be obtained.

In addition, since the resin mold layer that covers the outside has insufficient thermal conductivity when heat is generated inside, it is preferable to provide concave grooves. Since the connector receives stress associated with vehicle vibration and acceleration / deceleration, the adhesion between the mold resin and the terminal is required. Therefore, at the stage of the lead frame forming the terminals, it is preferable to provide the V groove in the resin-molded range. It is more preferable to provide a plurality of V-grooves with a certain distance therebetween, in addition to the stress resistance, preventing the outflow of flux generated from soldering.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIG. 1 shows an example of a functional connector for both capacitors and registers of the present invention. In FIG. 1, reference numeral 1 indicates a capacitor chip. The capacitor chip 1 is fixed over the first terminal 7 and the dummy terminal 4. Reference numeral 2 denotes a register chip, which is fixed across the dummy terminal 4 and another terminal (5 or 6) different from the first terminal 7 and the dummy terminal 4. 3 is a molding resin, which integrally molds the terminal portion, the capacitor chip, and the resistor chip which are not projected to the outside. In terms of circuit, the capacitor chip and the resistor chip are connected in series. As a result, the connector shown in FIG. 1 can be used as a connector having both functions of noise handling and current value control.

FIG. 2 shows a lead frame used to manufacture the connector of FIG. 1, and based on this figure, FIG.
The procedure for manufacturing the connector will be described below. (1) A capacitor chip is fixed across the first terminal 7 and the dummy terminal 4. (2) A register chip is fixed across the dummy terminal 4 and another terminal 5 different from the first terminal 7 and the dummy terminal 4. (3) Another register chip other than the above is fixed across the other terminal 6 and the dummy terminal 4. (4) When the buffer material is included, for example, silicone resin or the like is applied and dried around the capacitor chip and the register chip. A schematic diagram is shown in FIG. The buffer material is applied not only to the chip mounting side but also to the lead frame side. (5) A part of each terminal is projected to the outside, and the terminal part which does not project to the outside, the capacitor chip 1, and the register chip 2 are integrally resin-molded. In the resin mold, as shown in FIG. 1, there is a case where the surface is not provided with unevenness, and a case where unevenness having a function similar to that of the cooling fin is provided. The outline is shown in Fig. 4, except for the terminal side.
All other surfaces are grooved with recesses. Although the groove width depends on the size of the entire connector, a groove width of about 1 mm is suitable. (6) The connecting portion between the terminals is called a tie bar, but the tie bar (10-1, 10-2, 10-3, 10-
4), tie bar (9- for connecting carrier and terminal)
1, 9-2, 9-3) are cut together. Cut the lead frame so that the dummy terminals do not protrude from the mold. Although an example of using two register chips has been described above, there are cases where only one register chip is used and cases where three or more register chips are used.

As a material for the resin mold, resins such as epoxy and unsaturated polyester which are commonly used can be used. By means generally called molding,
A method of fixing the target component to the mold and then pouring the resin into the gap is adopted, but a method by injection molding is also possible.
In this case, use a resin suitable for injection molding. In order to improve the adhesion between the molded resin and the lead frame,
It is preferable to form the V groove in the lead frame in advance. The effect of the V groove is advantageous in that when the terminal receives an external force such as being pulled by vibration, the lead frame has a shape in which the resin bites, so that the force does not directly propagate to the chip. The size of the V-groove depends on the thickness of the lead frame, but about 0.1 mm is sufficient. The V groove means one of the plurality of V grooves that is close to the terminal protruding to the outside.

In order to fix the capacitor chip and the resistor chip to the lead frame, ordinary solder or lead-free solder (high temperature solder) can be used. The flux contained in the solder flows out through the lead frame during mounting. It is advisable to process the V-groove for preventing the flux from flowing in the lead frame in advance. Although the depth of the V groove depends on the thickness of the lead frame, about 0.1 mm is sufficient. This V
The groove means the V groove closer to the chip among the plurality of V grooves.

(Embodiment 2) FIG. 5 shows another example of the function connector which also functions as a capacitor and a register. Example 2 is Example 1
It is created by the same production method as in, but the difference is the shape of the lead frame. FIG. 6 shows the lead frame, in which dummy terminals are arranged in the direction opposite to the terminals. Therefore, in the lead frame, in addition to the tie bar 10 provided on the carrier 8 side, there is a tie bar 18 with a functional portion separated. The terminals 5 and 7 also have ends that can be connected to the outside on the dummy terminal 4 side. Also in the second embodiment, a plurality of V-grooves are prepared in advance on the lead frame in a resin mold portion corresponding to a terminal or a dummy terminal protruding to the outside. The V grooves 15 and 16 and the V grooves 19 and 20. In this case, V groove 1
Reference numerals 5 and 19 are used to reduce external force, and V grooves 16 and 20 are provided to prevent flux from flowing out when the chips are connected.

In the second embodiment, the irregularities on the surface at the time of resin molding are omitted, but it is preferable to prepare the recessed groove for cooling as in the first embodiment shown in FIG.

[0013]

As described above, the capacitor chip is fixed over the first terminal and the dummy terminal, and the register chip is fixed over the dummy terminal and the other terminals. In a state in which the capacitor chip and the register chip are connected in series, a part of each terminal is projected to the outside while the terminal part that does not project to the outside, the capacitor chip and the register chip are integrally resin-molded Due to the structure, one compact connector can exhibit both the function of the capacitor connector and the function of the register connector. Furthermore, if a buffer material is included around the capacitor chip and the resistor chip, it will be thermally superior. In addition, when unevenness is treated on the surface of the mold resin, it is more thermally superior. It is effective to prepare a V groove in advance for the adhesiveness between the mold resin and the lead frame, and it is preferable that a plurality of V grooves be used to deal with the outflow of the flux generated when soldering the chip.

[Brief description of drawings]

FIG. 1 shows a first embodiment of a capacitor / register dual-purpose functional connector of the present invention.

2 shows a lead frame used to manufacture the connector of FIG.

FIG. 3 is a diagram showing a state in which a cushioning material is included.

FIG. 4 is an example in which unevenness is added to the surface of a resin mold.

FIG. 5 shows a second embodiment of a capacitor / register dual-purpose function connector of the present invention.

6 illustrates a lead frame used to manufacture the connector of FIG.

[Explanation of symbols]

1 capacitor chip 2 register chip 3 Mold resin 4 dummy terminals 5, 6, 7 terminals 8 carriers 9-1, 9-2, 9-3 tie bar 10-1, 10-2, 10-3, 10-4 Tie bar 11 cushioning material 12 chips 13 solder 14 terminals 15, 16 V groove 17 recessed groove 18 tie bar 19, 20 V groove

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshifumi Matsumoto             Sumiden Ele, 530-1, Shinyamachi, Hisai City, Mie Prefecture             Inside Kutronics Co., Ltd. (72) Inventor Masashi Sugimoto             Sumiden Ele, 530-1, Shinyamachi, Hisai City, Mie Prefecture             Inside Kutronics Co., Ltd. (72) Inventor Yoshiaki Matsutani             Sumiden Ele, 530-1, Shinyamachi, Hisai City, Mie Prefecture             Inside Kutronics Co., Ltd. (72) Inventor Hiroki Hirai             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. (72) Inventor Tatsuo Tamagawa             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. (72) Inventor Tetsuko Tanaka             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. F-term (reference) 5E021 FA04 FB20 FC33 MA02 MA09                       MA30 MB01 MB08

Claims (5)

[Claims] 1. A capacitor chip is fixed over the first terminal and the dummy terminal, and a register chip is fixed over the dummy terminal and another terminal different from the first terminal and the dummy terminal. In a circuit manner, in a state where the capacitor chip and the resistor chip are connected in series, a part of each terminal is projected to the outside and is not projected to the outside, a capacitor chip,
A functional connector for both capacitors and resistors, in which the resistor chip is integrally molded with resin. 2. A buffer material is included around a capacitor chip and a resistor chip fixed to a terminal.
The function connector that also functions as a capacitor and a resistor. 3. The capacitor / register dual-purpose functional connector according to claim 1, wherein a groove of a recess is provided on the surface of the connector integrally molded with resin. 4. The capacitor / register common function connector according to claim 1, wherein a V groove is provided in a region of the lead frame used for the terminal in the resin mold. 5. The function connector for both capacitors and resistors according to claim 4, wherein a plurality of V-grooves are provided at a fixed distance.