JPH0553508U - Buckle device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a buckle device capable of reducing the assembly process of the members for illuminating the vicinity of the insertion opening of the buckle body. A light emitting diode 20 that integrally illuminates the conductive portion 26, the conductive portion 28, the insulating portion 30, the harness 34, and the vicinity of the insertion opening of the buckle body is formed.
Is connected between the conductive portion 26 and the conductive portion 28. Therefore, the step of connecting the light emitting diode 20 to the substrate by soldering becomes unnecessary. In addition, the conductive portions 26 and 28 are made of a conductive resin and serve as wiring portions (connection portions of the light emitting diode 20 or the like). Further, the conductive portions 26 and 28 have a desired resistance by changing a cross-sectional area or the like. Can be a value. Therefore, the step of forming the wiring portion and the resistor on the substrate becomes unnecessary.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a buckle device including a light source that illuminates the vicinity of a tongue plate insertion opening of a buckle body.

[0002]

[Prior Art]

 In a buckle device used for a vehicle seat belt device, a printed wiring board 60 is arranged in a buckle body (not shown) as shown in FIG. A plurality of conductive wiring portions 62 are formed on the printed wiring board 60, and the wiring portion 62 illuminates a harness 64 connected to a control device (not shown) and the vicinity of the insertion opening of the buckle body. The light emitting diode 66 and the resistor 68 for setting the current supplied to the light emitting diode 66 to a predetermined value are connected by soldering.

The printed wiring board 60 is arranged such that the light emitting diode 66 is located near the insertion opening of the buckle body. For example, when the occupant is seated on the seat, the light emitting diode 66 emits light under the control of the control means. The vicinity of the insertion hole of the buckle body is illuminated.

[0004]

[Problems to be solved by the device]

 However, in the illumination mechanism of the buckle device, it is necessary to form a plurality of wiring portions 62 on the printed wiring board 60 and solder the light emitting diode 66 and the resistor 68 to these wiring portions 62. Therefore, there is a problem that the number of assembly processes increases.

In consideration of the above facts, the present invention has an object to obtain a buckle device capable of reducing the man-hours for assembling parts for illuminating the vicinity of the insertion opening of the buckle body.

[0006]

A buckle device of the present invention includes a buckle body having an insertion opening into which a tongue plate is inserted, a light-emitting element for illuminating the vicinity of the insertion opening, and a buckle body disposed inside the buckle body. In addition, an insulating member and a first conductive resin member and a second conductive resin member, which are arranged to separate the insulating member, are integrally molded, and the first conductive resin member and the second conductive resin member are integrally molded. And a wiring board to which the light emitting element is connected between the conductive resin member and the conductive resin member.

[0007]

[Action]

 In the buckle device according to the present invention, the wiring board is formed by integrally molding the insulating member, the first conductive resin member, and the second conductive resin member, and the light emitting element has the first conductive resin member. It is connected between the member and the second conductive resin member.

In the wiring board of the present invention, since the first conductive resin member and the second conductive resin member themselves are wiring portions of the light emitting element, it is necessary to form a wiring portion for connecting the light emitting element to the substrate. Therefore, the step of providing the wiring portion is unnecessary.

The resistance values of the first conductive resin member and the second conductive resin member can be set to desired values by changing the amount of conductive material mixed when molding the wiring board. It functions as a resistor. Therefore, it is not necessary to connect a resistor for generating a current necessary for light emission of the light emitting element to the wiring board. Therefore, the number of parts can be reduced, and the work of soldering the resistor to the wiring board becomes unnecessary.

[0010]

【Example】

 A first embodiment of a buckle device according to the present invention will be described below with reference to FIGS. 1 and 3, arrow A indicates the tongue plate insertion direction, and arrow B indicates the tongue plate withdrawal direction.

As shown in FIG. 3, the buckle body 12 of the buckle device 10 is formed with an insertion opening 16 into which the tongue plate 14 is inserted. A buckle body 18 is arranged inside the buckle device 10. When the tongue plate 14 is inserted into the insertion opening 16, the tongue plate 14 engages with a not-shown locking portion of the buckle body 18. It is stopped so that it cannot be pulled out.

A release button (not shown) is provided in the vicinity of the insertion opening 16, and the release button is always urged in the direction in which the tongue plate is pulled out. The locked state of the stopper is released.

In the buckle body 12, the wiring board 24 also shown in FIG. 1 is sandwiched and fixed by the buckle body 12 and the buckle body 18. If necessary, a plastic film may be provided between the wiring board 24 and the buckle body 18 and the buckle body 12 or may be painted to perform an insulation treatment.

The wiring board 24 is formed by integrally molding a pair of elongated conductive portions 26, a square conductive portion 28, and a substantially U-shaped insulating portion 30 formed of an insulating material such as resin. Has been formed. That is, the conductive portion 28 is integrally formed with the insulating portion 30 inside the opening 30A of the insulating portion 30, and the conductive portion 26 is formed in each of the pair of leg portions 30B of the insulating portion 30 in the longitudinal direction in the tongue plate insertion direction. It is integrally formed in the (tongue plate extraction direction). As a result, the conductive portion 26 and the conductive portion 28 are separated from each other by the insulating portion 30 and brought into a non-conductive state. In the present embodiment, the conductive portions 26 and 28 are made of a conductive resin in which carbon particles are mixed in polyethylene.

At the end of the wiring board 24 on the tongue plate extraction direction side, two light emitting diodes 20 are arranged at positions where the insertion opening 16 can be illuminated. As shown in FIG. 1, the tip of the terminal 20A of each light emitting diode 20 is embedded in the conductive portion 26 from the end surface 26A of the conductive portion 26 on the tongue plate extraction direction side, and the tip of the terminal 20B of the light emitting diode 20. The portion is embedded in the conductive portion 28 from the end surface 28A of the conductive portion 28 on the tank plate extraction direction side. In this buried state, the respective light emitting diodes 20 are arranged so as not to project in the thickness direction of the wiring board 24.

It should be noted that the conductive portions 26 and 28 have resistance values for supplying the light emitting diode 20 with a current of an optimum magnitude for operating the light emitting diode 20. This resistance value can be set to a desired size by changing the amount of carbon particles mixed in and the lengths and cross-sectional areas of the conductive portions 26 and 28.

One end of the harness 34 is embedded in each conductive portion 26 from the end surface 26B on the tongue plate insertion direction side. One harness 34 is connected to a power source 40 via a switch 36, and the other harness 34 is grounded. The switch 36 is connected to a control means (not shown), and is turned on when, for example, an occupant is seated on the seat, current is supplied to the light emitting diode 20 and the light emitting diode 20 emits light. It is like this.

The operation of this embodiment will be described below together with the description of the manufacturing process of the wiring board 24. As shown by phantom lines in FIG. 2, cavities 40A and 40B having shapes corresponding to the conductive portions 26 and 28, gates 40C and 40D communicating with these cavities 40A and 40B, respectively, and further cavities 40A and 40B. A mold 40 having a space 40E in which the communicating insulating portion 30 is arranged is prepared.

When the wiring board 24 is molded by the mold 40, the insulating portion 30 is arranged in the space 40 E. In this case, the insulating portion 30 is formed with a through hole 30A that connects the gate 40D and the cavity 40B.

Further, the light emitting diode 20 is mounted on the mold 40 so that the tip of the terminal 20A is located at the end of the cavity 40A on the side of the space 40E and the terminal 20B is located at the end of the cavity 40E on the side of the opening 30A. To place. Further, the end of the harness 34 is arranged at the other end of the cavity 40A.

In this state, the molten conductive resin is injected into the cavities 40A and 40B through the gates 40C and 40D. After the conductive resin is cured, the mold 40 is opened, the molded product is taken out, and the conductive resin solidified in the gates 40C and 40D is removed to obtain the wiring board 24 shown in FIG. In this wiring board 24, the light emitting diode 20 does not project in the thickness direction, and the connection between the harness 34 and the conductive portion 26 is buried in the conductive portion 26 from the end face 26B. 24 can be formed thin. Therefore, the space occupied by the wiring board 24 in the buckle body 12 is small, and the buckle device 10 can be miniaturized. Further, in this embodiment, the resistance value of the conductive portions 26 and 28 is set to a desired value by adjusting the amount of carbon particles mixed in the conductive resin and the length and cross-sectional area of the conductive portions 26 and 28. Therefore, it is not necessary to install a resistor and the number of parts can be reduced.

Further, since the conductive portions 26 and 28 that are a part of the wiring board 24 are used as the connection portions of the light emitting diode 20 and the harness 34, the step of forming the conductive wiring portion on the board becomes unnecessary.

As described above, in the buckle device 10 to which the molded wiring board 24 is attached, when an occupant sits on the seat, the switch 36 is turned on by the control means (not shown), and the light emitting diode 20 emits light. The vicinity of the insertion opening 16 of the buckle body 12 is illuminated so that an occupant can easily visually recognize it.

FIG. 4 shows a wiring board 42 according to a second embodiment of the present invention. The members that are basically the same as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. Further, the method of manufacturing the wiring board 42 of this embodiment is the same as that of the above-mentioned embodiment, and therefore its explanation is omitted.

In this embodiment, the shape of the wiring board 42 is different from that of the above embodiment. That is, the surface of the buckle main body 44 on the mounting portion side of the mounting portion 44A of the wiring board 42 is gradually bent outward from the buckle body from both ends in the tongue plate insertion and extraction directions (direction of arrow C in FIG. 4). The wiring board 42 is formed in a shape corresponding to the shape of the mounting portion 44A. The wiring board 42 of the present embodiment is formed in a curved shape from both ends in the tongue plate insertion / extraction direction to the central portion so as to have a radius of curvature substantially the same as that of the mounting portion 44A.

In this embodiment, unlike the above-described embodiment, the length of the insulating portion 46 in the tongue plate insertion / extraction direction is the same as that of the conductive portion 26. The hole 48 is formed, and the wiring board 42 is attached to the buckle body 44 by screwing the male screw (not shown) inserted in the attaching hole 48 into the female screw (not shown) formed in the attaching portion 44A. ..

In the present embodiment, the wiring board 42 is formed by integrally molding the conductive portions 26 and 28 and the insulating portion 46 with a mold having a cavity having the bending shape. ..

In this embodiment, in addition to the effect of the first embodiment such that the assembly process of the wiring board 42 can be reduced, the wiring board 42 is formed into a shape corresponding to the shape of the attachment portion 44 A of the buckle body 44. Therefore, the mountability to the mount portion 44A is good, and the wiring board 46 can be compactly mounted to the buckle body 44.

In the above-mentioned examples, as the conductive resin, polyethylene mixed with carbon particles is used, but nylon may be mixed with carbon particles, and silver may be used instead of carbon particles. You may use surfactant etc.

In addition, in the above-described embodiment, in a state where the insulating portion 46 (insulating portion 30) is arranged in the mold, the molten resin is injected into the mold so that the conductive portions 26 and 28 and the insulating portion 46 (insulating portion). 30) is integrally molded, the conductive parts 26 and 28 may be arranged in the mold and the molten resin to be the insulating part 46 (insulating part 30) may be injected into the mold 40. Even in this case, since it is not necessary to form a wiring part on the substrate and it is not necessary to provide a resistor, there is an effect that the number of assembling steps and the number of parts can be reduced.

Further, the shape of the wiring board 24 (wiring board 42) is not limited to the above, and a desired shape can be obtained by molding the wiring board 24 (wiring board 42) with a die having a shape corresponding to the shape of the mounting portion 44A. it can.

[0032]

[Effect of the device]

 With the above-mentioned structure, the buckle device according to the present invention has an excellent effect that it is possible to obtain a buckle device that can reduce the number of assembling steps of a member that illuminates the vicinity of the insertion opening of the buckle body.

[Brief description of drawings]

FIG. 1 is a perspective view of an illumination unit of a baggage device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an illumination unit of the buckle device according to the first exemplary embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state in which a lighting unit of a buckle device according to an embodiment of the present invention is mounted in a buckle body.

FIG. 4 is a perspective view showing a state in which a lighting unit of a buckle device according to a second exemplary embodiment of the present invention is attached to a buckle body.

FIG. 5 is a perspective view showing a conventional wiring board, a light emitting diode connected to the wiring board, and the like.

[Explanation of symbols]

 10 Buckle Device 12 Buckle Body 14 Tongue Plate 16 Insertion Port 20 Light Emitting Diode (Light Emitting Element) 24 Wiring Board 26 Conductive Part (First Conductive Resin Member) 28 Conductive Part (Second Conductive Resin Member) 30 Insulating Part ( Insulating member)

Claims (1)

[Scope of utility model registration request] 1. A buckle body having an insertion opening into which a tongue plate is inserted, a light emitting element illuminating the vicinity of the insertion opening, an insulating member disposed in the buckle body, and an insulating member. The first conductive resin member and the second conductive resin member, which are arranged with a member separated from each other, are integrally molded, and the light emission is provided between the first conductive resin member and the second conductive resin member. A buckle device comprising: a wiring board to which elements are connected;