JP2007189816A - Electrical connection box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical connection box that can reduce cost by improving the workability at electrical connecting with a wiring harness. <P>SOLUTION: The electrical connection box 10A electrically, connected to an electrical component via the wiring harness W, is arranged at a center cluster 31 located at the center of an automobile instrument panel 30. A plurality of pressure-contacting terminals 19 are arranged protrusively on the lower surface of an electrical circuit board 17 in an electrical connection box body 11A and is electrically connected to the electric circuit of the electrical circuit board 17. In the wiring harness W, its wire conductors are made to pressure-contact with pressure-contacting blades of the pressure-contacting terminals 19 in a lump, and are thus electrically connected to the blades. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric junction box (ie, electric junction) having a central connection function of electric circuits in a box, such as a relay box, a fuse box, an ECU (ie, electronic control unit) box, etc. -Block).

  In general, an electrical junction box is disposed on an instrument panel in a vehicle interior. However, the location of the electrical junction box on the instrument panel is usually considerably limited due to vehicle design.

  More specifically, the electrical junction box does not belong to, for example, a design part that forms at least a part of the interior decoration of a vehicle or an electrical part for operation such as a switch for controlling an electrical component of an automobile. There is fundamentally no vehicle design philosophy that allows the electrical junction box to be placed at the front, top, etc. of the instrument panel, which is important for the aesthetic appearance of the instrument and the operation of the electrical components.

  Therefore, the actual situation is that the electrical junction box must be arranged toward the end (haul) such as the lower end of the instrument panel. On the other hand, in-vehicle components are always required to be small so that the vehicle interior space can be expanded in order to provide a comfortable vehicle interior space.

  Therefore, an electrical connection box incorporating a branch / connection circuit or a functional circuit for a wire harness that is electrically connected to an electrical component (electrical component) provided on the instrument panel is connected to the electrical connection box described above. The wire harness can be routed as short as possible because it is in a position where the wire harness must be routed for a long time (specifically, the end of the instrument panel, as described above). It is necessary to improve to arrange the electrical junction box at such a position. If the wire harness can be routed shorter, it can greatly contribute to miniaturization, cost reduction, and reduction of the DC resistance of the conductor of the wire harness.

  In addition, since the electrical connection between the wire harness and the electrical junction box is made by fitting a plurality of connectors provided in the wire harness and a plurality of connector portions provided in the electrical junction box, the number of connector fitting operations is reduced. In many cases, it is also necessary to improve workability to reduce costs (ie, reduce labor costs).

  By the way, an arrangement structure of an electric connection box in which an electric connection box is provided on the back of a meter mounted on a steering column is known (see Patent Document 1). In this arrangement structure, the electric connection box is positively arranged on the back of the meter, which is the main electric part of the automobile, and the electric connection between the electric connection box and the meter is a connector connection that does not use a wire harness. Excellent in terms.

  However, in view of the above circumstances, it is needless to say that it is more preferable not only the meter but also more electrical components and electrical connection boxes can be electrically connected.

JP 2005-184913 A

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an electrical connection box that can improve the workability in electrical connection with a wire harness and reduce costs. There is.

In order to achieve the above-described object, an electrical junction box according to the present invention is characterized by the following (1) and (2).
(1) An electrical connection box that is electrically connected to an automobile electrical component via a wire harness,
The junction box body,
An electric circuit board disposed in the junction box body;
A plurality of connecting portions erected on the electric circuit board so as to be electrically connected to the electric circuit of the electric circuit board;
With
Each of the plurality of connecting portions is directly connected to the wire harness in a lump.
(2) In the electrical junction box configured as described in (1) above,
The plurality of connecting portions are a plurality of press contact terminals, and the plurality of press contact terminals are collectively pressed into the wire harness.

According to the electrical connection box of the above (1), unlike general connector connection, since it is electrically connected to the wire harness directly by collective connection, the number of connectors with built-in terminals can be reduced and work can be performed. Therefore, the cost can be reduced in terms of material cost and labor cost.
In addition, the electrical connection box of (2) is more preferable because it can be easily connected directly to the wire harness by collective pressure welding.

  ADVANTAGE OF THE INVENTION According to this invention, the electrical connection box which can improve workability | operativity at the time of the electrical connection with a wire harness and can aim at cost reduction can be provided.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to the invention will be described in detail with reference to FIGS.

  1 is a perspective view mainly showing a front surface, one side surface, and a top surface of an embodiment of an electrical junction box according to the present invention. FIG. 2 is a perspective view mainly showing a back surface, another side surface, and a top surface of the electrical junction box of FIG. 3 is a perspective view showing an arrangement structure in which the electrical junction box shown in FIGS. 1 and 2 is appropriately modified and arranged on an instrument panel in a vehicle interior of the automobile, and FIG. 4 is a main part of the arrangement structure of FIG. FIG. 5 is a perspective view showing a further modification of the electric junction box arranged on the instrument panel shown in FIGS. 3 and 4. FIG.

  As shown in FIG. 1 and FIG. 2, the electrical junction box 10 is connected to the junction box body 11 and an upper part on the back side of the junction box body 11 so as to be electrically connected to the electrical circuit in the junction box body 11. And an attached meter 12. The junction box body 11 has electrical components such as a relay array 14 formed by integrating a plurality of blade-type fuses 13 and a plurality of relays, and these electrical components are included in the junction box body 11. It is electrically connected to the electric circuit. The electric components such as the blade-type fuse 13 and the relay array 14 are arranged so as to protrude from the upper surface of the junction box body 11. The electrical circuit in the junction box body 11 is electrically connected to the conductor of the wire of the wire harness W.

  The junction box main body 11 includes four switches 15 for controlling electrical components of the automobile at the front thereof. These switches 15 have portions that partially protrude from the front surface of the junction box body 11. More specifically, a push button switch operation unit 15a for ON / OFF control of the defogger (defroster), a push button switch operation unit 15b for flashing / extinguishing the hazard lamp, ON / OFF control of the wiper, and The operation unit 15c of the twist rotation switch for adjusting the operation speed of the wiper, and the operation unit 15d of the twist rotation switch for adjusting the headlamp ON / OFF control and the brightness of the headlamp are provided on the connection box body 11. It is exposed from the front. Note that a plurality of connector portions 16 are formed on the back surface of the junction box body 11 for electrical connection with other electrical components by connector connection.

  Such an electrical connection box 10 is appropriately modified (for example, the external dimensions of the electrical connection box 10 and the arrangement of various components in the electrical connection box 10 are changed as appropriate) and arranged on an instrument panel in a vehicle cabin. Is shown in FIGS. In addition, in the modified example of the arrangement structure of the electrical junction box shown in FIG. 3 and FIG. 4, those having the same configuration and action as those already described with reference to FIG. 1 and FIG. And their explanation is omitted or simplified.

  As shown in FIGS. 3 and 4, an electrical connection box 10 </ b> A that is electrically connected to an electrical component of the automobile via a wire harness W in a center cluster 31 in the center of the instrument panel 30 of the automobile. Is arranged. In such an arrangement structure of the electrical junction box 10A, the wire harness W (see FIG. 4) for electrically connecting the electrical components in the instrument panel 30 and the electrical junction box 10A is particularly short. It is an effective arrangement. In addition, by arranging the electrical junction box 10A in the center of the instrument panel 30 in this way, the electrical junction box 10A can be changed to the same type of electrical components arranged in, for example, left and right positions in the automobile. Thus, each of the wire harnesses W can be routed with the shortest uniform length for electrical connection. This is because the DC resistances of the respective conductors of the wire harness W can be made equal, which is also very suitable for electrical components that do not like the potential difference caused by a slight difference in the DC resistance of the conductors. Moreover, being able to make each wire harness W into the shortest uniform length can contribute not only to the reduction of the material cost of the wire harness W but also to the reduction of types, which is preferable in terms of cost reduction.

  Further, the operation portions 15 a, 15 b, 15 c and 15 d of the four switches 15 are exposed so as to form a part of the design surface (front surface) 32 of the center cluster 31. According to such an arrangement structure of the electrical junction box 10A, the electrical junction box 10A can be successfully integrated with the center cluster 31 that is important for the aesthetic appearance of the instrument panel 30 and for operating the electrical components. When the instrument panel 30 is viewed as a whole, miniaturization can be achieved.

  In FIG. 3, reference numeral 33 denotes a slide switch for controlling the air conditioner. The slide switch 33 is located below the operation portions 15a, 15b, 15c, and 15d of the four switches 15 of the electrical junction box 10A in the center cluster 31. Reference numeral 25 is a glove box on the left side of the center cluster 31, and reference numeral 27 is a steering wheel on the right side of the center cluster 31.

  In the junction box body 11A of the electrical junction box 10A, a blade-type fuse array 13A, a relay array 14A, and the like formed by integrating a plurality of blade-type fuses 13 are electrically connected to the junction box body 11A. Are arranged so as to be electrically connected to each other. As shown in FIG. 4, the blade-type fuse array 13A, the relay array 14A, and the like are respectively sandwiched by a plurality of tuning fork terminals 18 that are erected on the upper surface of the electric circuit board 17 in the junction box body 11A. So that they are connected. These tuning fork terminals 18 are electrically connected to the electric circuit of the electric circuit board 17.

  As shown in FIG. 4, a plurality of press contact terminals 19 are erected on the lower surface of the electric circuit board 17 in the connection box body 11 </ b> A and are electrically connected to the electric circuit of the electric circuit board 17. Yes. In the wire harness W, the conductors of these electric wires are collectively brought into pressure contact with the pressure contact blades of the pressure contact terminals 19, and are thereby electrically connected. According to such an electrical connection box 10A, unlike general connector connection, since it is electrically connected to the wire harness W directly by collective pressure welding, the number of connectors with built-in terminals can be reduced and work can be performed. Therefore, the cost can be reduced in terms of material cost and labor cost.

  Note that the present invention is not limited to the above-described embodiments and modifications, and modifications, improvements, and the like can be made as appropriate. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiments and modifications are arbitrary and not limited as long as the present invention can be achieved.

  The above-mentioned electrical junction box is connected to a plurality of wire harnesses at the same time with the plurality of press contact terminals. For example, instead of the press contact terminals, welding terminals are used, and the wire harnesses are connected to the terminals. The conductors may be welded together and electrically connected.

  Further, for example, the electrical junction box of the present invention may take a form in which the junction box body has a surface that forms a part of the design surface of the center cluster. A further variation of such an electrical junction box is shown in FIG. In addition, in the modified example of the electrical junction box shown in FIG. 5, those having the same configuration and action as those already described with reference to FIG. 3 and FIG. Description is omitted or simplified.

  As shown in FIG. 5, the electrical junction box 10 </ b> B is arranged in a center cluster 31 </ b> B at the center of the vehicle instrument panel 30 </ b> B, and the vehicle electrical components and the wire harness W (see FIG. 4). Electrical connection through As described above, the electrical connection box 10B has a front surface 11Ba that forms a part of the design surface (front surface) 32B of the center cluster 31B. In other words, the design surface 32B of the center cluster 31B includes the front surface 11Ba of the junction box body 11B.

  As described above, the electrical connection box 10B is particularly effective for short-circuiting the wire harness W (see FIG. 4) for electrically connecting the electrical components in the instrument panel 30B and the electrical connection box 10B. It is arrange | positioned in the site | part of a typical instrument panel 30B. Further, by arranging the electrical connection box 10B in the center portion of the instrument panel 30B in this way, the electrical connection box 10B can be changed to the same type of electrical components that are arranged in, for example, left and right positions in the automobile. Thus, each of the wire harnesses W can be routed with the shortest uniform length for electrical connection. This is because the DC resistances of the respective conductors of the wire harness W can be made equal, which is also very suitable for electrical components that do not like the potential difference caused by a slight difference in the DC resistance of the conductors. Moreover, being able to make each wire harness W into the shortest uniform length can contribute not only to the reduction of the material cost of the wire harness W but also to the reduction of types, which is preferable in terms of cost reduction. Furthermore, since the electrical junction box 10B has a front surface 11Ba that forms a part of the design surface 32B of the center cluster 31B, the electrical junction box 10B can be used for the aesthetic appearance of the instrument panel 30B and the operation of electrical components. It can be integrated with the important center cluster 31B, so that miniaturization can be achieved when viewed as the entire instrument panel 30B.

  Further, the electrical junction box 10B has a plurality of switches 15 for controlling electrical components, and the operation portions 15a, 15b, 15c, 15d of the switches 15 are exposed from the front surface 11Ba of the junction box body 11B. Therefore, the electrical junction box 10B can be integrated with the center cluster 31B, which is important in terms of the aesthetics of the instrument panel 30B and the operation of the electrical components, so that the instrument panel 30B can be viewed as a whole. Further miniaturization can be achieved.

  In the above-described embodiments and modifications, as the plurality of switches 15, a push button switch for controlling ON / OFF of the defogger (defroster), a push button switch for controlling blinking / extinguishing of the hazard lamp, ON of the wiper A torsional rotation switch for adjusting the speed of the ON / OFF control and the wiper, and a torsional rotation switch for adjusting the ON / OFF control of the headlamp and the brightness of the headlamp were used. Switches other than these types of switches can also be employed. For example, instead of the two types of twist rotation switches described above, a twist rotation switch for ON / OFF control of the immobilizer, and a twist rotation switch such as an ignition switch may be employed.

It is a perspective view which mainly shows the front surface, one side surface, and upper surface of embodiment of the electrical-connection box which concerns on this invention. It is a perspective view which mainly shows a back surface, another side surface, and an upper surface of the electrical junction box of FIG. FIG. 3 is a perspective view showing an arrangement structure in which the electrical junction box shown in FIGS. 1 and 2 is appropriately modified and arranged on an instrument panel in a vehicle cabin. It is a longitudinal cross-sectional view of the principal part of the arrangement structure of FIG. It is a perspective view which shows the further modification of the electrical-connection box arrange | positioned at the instrument panel shown by FIG. 3 and FIG.

Explanation of symbols

10, 10A, 10B: Electrical junction box 11, 11A, 11B: Junction box body 11Ba: Surface of junction box body 12: Meter 13: Blade type fuse 13A: Blade type fuse array 14, 14A: Relay array 15: Switch 15a, 15b, 15c, 15d: operation unit 16: connector unit 17: electric circuit board 18: tuning fork terminal 19: pressure contact terminal 30, 30B: instrument panel 31, 31B: center cluster 32, 32B: design surface W : Wire harness

Claims (2)

An electrical connection box that is electrically connected to an automobile electrical component via a wire harness,
The junction box body,
An electric circuit board disposed in the junction box body;
A plurality of connecting portions erected on the electric circuit board so as to be electrically connected to the electric circuit of the electric circuit board;
With
The electrical connection box, wherein the plurality of connection portions are directly connected to the wire harness in a lump.   The electrical connection box according to claim 1, wherein the plurality of connection portions are a plurality of press contact terminals, and the plurality of press contact terminals are collectively pressed into the wire harness.

Images