JP4637567B2 - Pressure contact terminal - Google Patents

Description

  The present invention relates to a press contact terminal, and more specifically, a pair of press contact blades arranged in parallel so as to face each other, and a lead wire formed by the pair of press contact blades and extending from an electronic element. A pressure contact terminal that is electrically connected to the lead wire by press-contacting the lead wire to the slit.

  A high mount stop lamp (lamp) is known as a vehicular lamp using a light emitting diode (LED) as a light source. This lamp is installed in the rear spoiler, on the roof, in the rear compartment, etc., and is turned on together with the brake light during brake operation, thereby alerting the driver of the following vehicle and preventing a rear-end collision or the like.

In this vehicular lamp using a plurality of LEDs, there has been proposed a technical idea that does not require a soldering process and can reduce the number of components, improve reliability, and reduce manufacturing costs. According to the lamp, a plurality of conductive metal pieces having a plurality of press-fit locking portions are provided, and two leads of the plurality of LEDs are press-fitted and locked to press-fit lock portions of different conductive metal pieces. Thus, the LED is electrically connected by the conductive metal piece (see Patent Document 1).
JP-A-10-188614

  FIG. 7 is a diagram showing an example of pressure contact of a lead wire of an electronic element to a conventional pressure contact terminal. In FIG. 7, a pair of lead wires 31 are planted on the bottom surface of the electronic element, and each of the lead wires 31 is formed in a regular quadrangular prism shape with a conductive metal. And the crimp terminal 40 is formed in fixing members, such as a connector and a bus bar, so that it may correspond to the lead wire 31.

  In the crimp terminal 40, two press contact blades 41 are arranged in parallel so that the inclined portions 42 face each other, and the U 31 for introducing the lead wire 31 into the central portion of the press contact terminal 40 by these press contact blades 41. A character-shaped pressure contact slit 43 is formed. The pressure slit 43 is formed to have a width W2 that is narrower than the width W1 of the lead wire 31. When the lead wire 31 is brought into pressure contact with the slit 43, the length of one side of the lead wire 31 becomes the contact length A as shown in FIG.

  If the lead wire 31 is formed in a polygonal shape so that the flat surface of the lead wire 31 becomes the pressure contact surface 3a that is in pressure contact with the pressure contact terminal, the contact length A with the pressure contact terminal 40 is set to be longer than that of the cylindrical lead wire. However, in order to further improve the reliability, it is not sufficient to use only the pressure contact surface 3a. In particular, when mounting an electronic device in which an electronic element and a pressure contact terminal are electrically connected only by pressure welding without soldering in a vehicle or the like, the reliability of the pressure welding due to the influence of vibration transmitted from the vehicle body, etc. There was a fear of lowering the sex.

Therefore, in view of the above-described problems, the present invention provides a press contact terminal that can set the position of the slit regardless of the lead wire interval of the lead wires of the electronic element and can improve the press contact strength. Is an issue.

In order to solve the above-mentioned problems, the press contact terminal according to claim 1 is formed by a pair of press contact blades arranged to face each other and the pair of press contact blades, and extends from the electronic element in the same direction. to a slit to insert lead to each of the plurality of lead wires made of a conductive metal, a has a plurality, in pressed against the lead wire to the slit press contact terminals to be connected the electrically leads, the press-contact blade However, the width of the slit increases as the pair of press contact blades moves from the side where the lead wire is inserted into the slit toward the insertion direction. decreases, and the lead wire inserted in the slit forming the slit to engage a portion of each of the fitting portion, the lead spacing between said plurality of lead wires In order to shorten the slit interval between the slits corresponding to each of the lead wires, a plurality of the pair of press contact blades are formed so that the lengths of the pair of press contact blades adjacent to each other are different, and the openings of the slits are formed. The fitting portion is formed at a predetermined position of the press contact blade having the same insertion distance of the lead wire from the lead wire in a direction in which the width of the slit is reduced in a state where the lead wire is engaged with the fitting portion. The press contact blade is moved so that the lead wire is fitted into the fitting portion and is brought into pressure contact with the slit.

According to the press contact terminal of the present invention described in claim 1, the width of the slit decreases from the side where the lead wire is inserted into the slit toward the insertion direction, and the lead wire inserted into the slit is fitted. A slit is formed by a pair of press contact blades so as to engage a part of each of the parts. When the lead wire is inserted until it engages with the fitting portion, each of the press contact blades is moved in the direction of narrowing the width of the slit and the lead wire is fitted into the fitting portion, and the lead wire is inserted into the slit. Is pressed. Further, each of the plurality of lead wires of the electronic element is pressed against the slit in a state of being fitted to a fitting portion formed at a press contact position of the press contact blade in which the slit interval is shorter than the lead wire interval.

  In order to solve the above-mentioned problem, the invention according to claim 2 is the press-contact terminal according to claim 1, wherein the lead wire is press-contacted to each of the pair of press-contact blades and is parallel to a pair of parallel press-contacts. It is formed in a polygonal column shape so as to have a surface, and the fitting portion is formed so as to be fitted over two surfaces of the lead wire sandwiching the corner from the corner of the lead wire. It is characterized by.

  According to the press contact terminal of the present invention described in claim 2, the lead wire formed in a polygonal shape is fitted to the fitting portion over two surfaces of the lead wire sandwiching the corner from any corner. It is pressed against the slit in the state.

As described above, according to the press contact terminal of the present invention described in claim 1, when the lead wire inserted into the slit is engaged with the fitting portion of the press contact blade, the lead wire is fitted into the fitting portion. Since the pressure contact blade is moved so that the lead wire is pressed into the slit, the contact area between the pressure contact blade and the lead wire is sufficiently secured to improve the adhesive strength (peeling strength). Strength can be improved. Moreover, since the lead wire is fitted by the fitting portion of the press contact blade, even if vibration is transmitted to the press contact blade, stable face material adhesion strength can be maintained without rattling. Furthermore, since the lead wire is fitted to the fitting portion of the press contact blade, the width of the slit formed by the pair of press contact blades can be made narrower than before, so that the size of the press contact terminal can be reduced. . In addition, each of the plurality of lead wires of the electronic element is press-contacted to the slit in a state of being fitted to the fitting portion formed at the press-contact position of the press-contact blade in which the slit interval is shorter than the lead wire interval. Therefore, since the position of the slit can be set regardless of the lead wire interval between the lead wires of the electronic element, the size of the press contact terminal can be reduced.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the lead wire formed in a polygonal shape is applied to two surfaces of the lead wire sandwiching the corner from any corner. Since the contact area between the press contact blade and the lead wire can be further secured because the contact is made with the slit in a state of being fitted to the fitting portion, the adhesive strength of the face material can be further improved. .

  Hereinafter, an embodiment of a lighting unit having a press contact terminal according to the present invention will be described with reference to the drawings of FIGS. In addition, the same code | symbol is attached | subjected to the part which is the same as that of what was demonstrated in the prior art, or the detailed description is abbreviate | omitted.

  1A and 1B show the pressure contact process of the lead wire to the pressure contact terminal of the present invention, where FIG. 1A shows an electronic element set state, FIG. 1B shows a pressure blade moving state, and FIG. 1C shows a pressure contact state. FIG. 3 is an enlarged view of the press-contact portion in FIG. 1, FIG. 3 is a view showing a press-completion state in the press-contact process in FIG. 1, and FIG. 4 is an external view of a lighting unit having a press-contact terminal of the present invention. (A) is a top view, (b) is a perspective view from the bottom surface, FIG. 5 is a caseless container in FIG. 4, (a) is a top view, and (b) is a perspective view from the bottom surface. FIG. 6 is an enlarged view of the LED portion when the case in FIG. 4 is removed.

  As shown in FIG. 1, the press contact terminal 40 according to the present invention includes a pair of press contact blades 41 arranged to face each other, and a conductive material formed by the pair of press contact blades 41 and extending from the LED 3 that is an electronic element. And a slit 43 for introducing a lead wire 31 made of a conductive metal. In the press contact terminal 40 that is press-contacted to the slit 43 and electrically connected to the lead wire 31, the press contact blade 41 is provided. Has a fitting portion 44 that engages with the lead wire 31 that is in pressure contact with the slit 43, and the pair of pressure contact blades 41 in the insertion direction X from the side where the lead wire 31 is inserted into the slit 43. The width of the slit 43 decreases as it goes toward the slit 4, and the lead wire 31 inserted into the slit 43 engages with a part of each of the fitting portions 44. In the state where the lead wire 31 is engaged with the fitting portion 44, the press contact blade 41 is moved in the direction D in which the width of the slit 43 is narrowed, and the lead wire 31 is moved to the fitting portion 44. So that the lead wire 31 is press-contacted to the slit 43.

  Further, when the lead wire 31 is formed in a polygonal column shape so as to have a pair of parallel opposing press contact surfaces 31a pressed against each of the pair of press contact blades 41, the fitting portion 44 is The lead wire is formed so as to be fitted over the two surfaces of the lead wire sandwiching the corner from the corner of the lead wire.

  Here, an example of the fitting portion 44 corresponding to the LED 3 in which the lead wire 31 is formed in a regular quadrangular prism shape as shown in FIG. 2 will be described. First, when one side of the lead wire 31 has a length A, a shape corresponding to the cross-sectional shape of the lead wire 31 from a corner sandwiching an arbitrary corner to a length B (A> B) (a right isosceles triangle). The fitting portion 44 is formed so as to face the pair of press contact blades 41. In the present best mode, since the diagonal line on the bottom surface of the lead wire 31 intersects each of the press contact blades 41 perpendicularly, the width of the slit 43 formed by the press contact blade 41 is the length of the diagonal line. It can be set to less than half.

  Further, the electronic element 3 has a plurality of the lead wires 31, and the fitting portion 44 is a slit between the slits 43 corresponding to each of the lead wires 31 rather than the lead wire interval between the lead wires 31. The press contact blade 41 is formed so that the interval is short.

  In the present best mode, as shown in FIG. 1, in order to make the slit interval between the slits 43 corresponding to each of the lead wires 31 shorter than the interval between the lead wires 31, for each press contact terminal 40, The press contact blades 41 are formed to have different lengths, and the fitting portions 44 are formed at predetermined positions of the press contact blade 41 having the same insertion distance from the opening of the slit 43.

  The present invention is not limited to this, and the length of the press contact blade 41 of all the press contact terminals 40 is the same, and the distance from the side where the lead wire 31 is inserted into the slit 43 or the opposite side is the lead wire. The fitting portion 44 can be formed at a position on the press contact blade 41 so as to correspond to each of the 31 so that the slit interval is shorter than the lead interval.

  Further, as shown in FIG. 3, the press contact terminal 40 prevents the press contact blade 41 from moving in the direction of widening the slit 43 in a state where the lead wire 31 is fitted to the fitting portion 44. A fixing cover (pressure contact blade fixing means) 8 is provided. If it does in this way, if the lead wire 31 is press-contacted to the slit 43 in the state fitted to the fitting part 44, the movement of the press-contacting blade 41 in the direction which expands the width | variety of the slit 43 with the fixing cover 8 will be prevented. be able to.

  As shown in FIGS. 4 to 6, the lighting unit 1 having the above-described press contact terminal 40 accommodates the press contact terminal 40 inside a case 2 formed in a substantially box shape made of a resin member or the like. The case 2 is configured to cover the housing 2a with covers 2b, c, d. And the part which arrange | positions LED3 becomes the protrusion part 2e, and this protrusion part 2e becomes a structure which radiate | emits the light which LED3 emitted to the exterior of case 2. As shown in FIG.

  The cover 2d is configured to be detachable from the housing 2a, and has a part of the protruding portion 2e. As shown in FIG. 6, when the cover 2d is removed, the LED 3 can be crimped or removed. When the LED 3 is pressed against the press contact terminal 40, the cover 3d covers the LED 3. It is stored in the case 2.

  Further, as shown in FIG. 5, two bus bars 4 for grounding and power supply are provided inside the housing 2 a, and two bus bars 4 penetrating the housing 2 a are provided on one end side of the bus bar 4. A terminal 4 a electrically connected to the electric wire 5 is formed. In addition, a resistor 6 and a Zener diode (for protection circuit) 7 are electrically connected to the bus bar 4.

  On the other end side of the bus bar 4, a pair of the above-described press contact terminals 40 to which the LED 3 is pressed and electrically connected can be seen from above or below so that one of them covers or is close to a part of the other. It is formed like a step. And LED3 is press-contacted and electrically connected to the crimp terminal 40, and electric power is supplied to LED3 from the electric wire 5 via the bus bar 4 and the crimp terminal 40 one by one, and LED3 lights.

  As described above, each of the press contact terminals 40 has a pair of press contact blades 41 whose width decreases from the side where the lead wire 31 is inserted into the slit 43 toward the insertion direction X, and is inserted into the slit 43. The lead wire 31 is continuously provided from the bus bar 4 in a state in which a U-shaped slit 43 is formed so that the lead wire 31 is engaged with a part of each of the fitting portions 44.

  Further, each of the press contact blades 41 moves in the direction D (see FIG. 1) in which the width of the slit 43 is narrowed in a state where the lead wire 31 is engaged with the fitting portion 44, and the lead wire 31 is moved to the fitting portion 44. It is provided in the bus bar 4 so that it can be fitted. As described above, in this best mode, the lead wire 31 can be easily inserted into the slit 43 by forming the slit 43 with a large width in advance, but the present invention is not limited to this. The slits 43 can be widened when the wire 31 is inserted into the slits 43, and the slits 43 can be narrowed when they are fitted into the fitting portions 44.

  In this best mode, the case where the LED 3 has a pair of lead wires 31 will be described. However, the present invention is not limited to this, and depending on the electronic element, the configuration of one lead wire, three or more lead wires, etc. It can be made into various forms according to.

  Next, an example of the operation (action) related to the pressure contact between the lead wire 30 and the pressure contact terminal 40 in the illumination unit 1 having the above-described configuration will be described below mainly with reference to the drawing of FIG.

  In a state where the cover 2d is removed from the housing 2a and the press contact terminal 40 is exposed, the lead wire 31 of the LED 3 has a pair of diagonal lines from the opening of the slit 43 of the press contact terminal 40 as shown in FIG. It is inserted until the corner contacts the fitting portion 44 of the press contact blade 41. The pair of press contact blades 41 are moved in the direction D in which the width of the slit 43 is narrowed as shown in FIG. 1B, and the lead wire is fitted into the fitting portion 44 as shown in FIG. By joining the lead wire 31 to the slit 43, the press contact terminal 40 is electrically connected to the lead wire 31 by pressing the lead wire 31 to the slit 43. Then, as shown in FIG. 3, the pair of press contact blades 41 in each press contact terminal 40 is fixed by the fixing cover 8. The fixing cover 8 may be integrally formed inside the cover 2d, or may be formed separately from the cover 2d.

  As described above, according to the press contact terminal 40 of the present invention, when the lead wire 31 inserted into the slit 43 is engaged with the fitting portion 44 of the press contact blade 41, the lead wire 31 is fitted into the fit portion 44. Since the pressure contact blade 41 is moved and the lead wire 31 is pressed into contact with the slit 43, a sufficient contact area between the pressure contact blade 41 and the lead wire 31 is secured, and the adhesive strength (peeling strength) is secured. ) Can be improved. Further, since the lead wire 31 is fitted by the fitting portion 44 of the press contact blade 41, even if vibration is transmitted to the press contact blade 41, stable face material adhesion strength can be maintained without rattling. Furthermore, since the lead wire 31 is fitted into the fitting portion 44 of the press contact blade 41, the width of the slit 43 formed by the pair of press contact blades 41 can be made narrower than before, so the size of the press contact terminal 40 can be reduced. Can be achieved.

  In addition, the lead wire 31 formed in a polygonal shape is pressed against the slit 43 in a state of being fitted to the fitting portion 44 over the two surfaces of the lead wire 31 sandwiching the corner from any corner. As a result, the contact area between the press contact blade 41 and the lead wire 31 can be further secured, so that the face material adhesive strength can be further improved.

  Further, each of the plurality of lead wires 31 included in the LED (electronic element) 3 is fitted in a fitting portion 44 formed at the press contact position of the press contact blade 41 where the slit interval is shorter than the lead wire interval. Since the press contact is made with the slit, the position of the slit 43 can be set regardless of the lead wire interval of the lead wire 31 of the LED 3, so that the press contact terminal 40 can be downsized.

  In addition, although the case where the press contact terminal 40 of this invention is applied to the lighting unit 1 was demonstrated, as long as it is an apparatus of the structure which press-contacts an electronic element to the press contact terminal 40, even if it uses for other apparatuses, it is as above-mentioned. An effect can be obtained.

It is a figure which shows the press-contact process of the lead wire with respect to the press-contact terminal of this invention, (a) is an electronic element set state, (b) is a press-contact blade movement state, (c) is a press-contact state. It is the enlarged view to which the press-contact location in FIG. 1 was expanded. It is a figure which shows the press-contact completion state in the press-contact process in FIG. FIG. 4A is a perspective view from the top surface, and FIG. 4B is a perspective view from the bottom surface, showing the appearance of a lighting unit having a press contact terminal according to the present invention. FIG. 5 is a perspective view from the lower surface of the case-less container in FIG. 4, where (a) is an upper surface and (b) is a lower surface. It is an enlarged view of the LED part when the case in FIG. 4 is removed. It is a figure which shows the example of the press-contact of the lead wire of the electronic element with respect to the conventional press-contact terminal.

Explanation of symbols

1 Lighting unit 3 LED (electronic element)
31 Lead wire 40 Press contact terminal 41 Press contact blade 43 Slit 44 Fitting part

Claims (2)

More a pair of pressure contact blades which are arranged to face each other, a slit put lead to each of the plurality of lead wires made of a conductive metal extending in the same direction from the electronic devices are formed by the pair of press-connecting blades, the In the press contact terminal that is electrically connected to the lead wire by pressing the lead wire to the slit,
The press contact blade has a fitting portion that fits with the lead wire pressed into the slit,
The pair of press contact blades, the width of the slit becomes smaller from the side where the lead wire is inserted into the slit toward the insertion direction, and the lead wire inserted into the slit is connected to each of the fitting portions. Forming the slit to engage a part of
In order to make the slit interval between the slits corresponding to each of the lead wires shorter than the interval between the lead wires between the plurality of lead wires, the plurality of pairs And the fitting portion is formed at a predetermined position of the press contact blade in which the insertion distance of the lead wire from the opening of the slit is equal.
In a state where the lead wire is engaged with the fitting portion, the press contact blade is moved in a direction of narrowing the width of the slit so that the lead wire is fitted into the fitting portion and pressed against the slit. Press contact terminals characterized by the fact that The lead wire is formed in a polygonal column shape so as to have a pair of parallel opposing pressure contact surfaces that are pressed against each of the pair of pressure contact blades,
2. The press contact terminal according to claim 1, wherein the fitting portion is formed to be fitted over two surfaces of the lead wire sandwiching the corner from the corner of the lead wire.

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