JP2985016B2 - Method of forming switch in automobile instrument panel and switch structure thereof - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a switch provided in an automobile instrument panel, and a structure of the switch.

[Prior Art] To form a switch on an instrument panel of an automobile, see FIG. 5, after arranging and fixing a wire harness 11 on a dashboard 9 of the instrument panel,
A cluster board 10 of the instrument panel section (a cluster board is a board member provided with a switch as a component of the automobile instrument panel section and attached to the instrument panel section) is attached to the dashboard 9.
After that, after connecting the separate switch unit 25 and the end of the wire harness, the switch unit 25 is mounted on the cluster board 10, and the switch operation end (key) is attached to the front side of the instrument panel. Top)
And a method of forming an array.

[Problem to be Solved by the Invention] According to the above-described conventional means, since the individual connection of the switch unit 25 and the wire harness 11 is performed in a narrow allowable space surrounded by the dashboard 9 and the cluster board 10, the hand-clapping work of the hand-raising is performed. In addition, the workability is poor, and further, there is a quality problem that a connection mistake between the wire harness 11 and the switch unit 25 occurs due to a connection error, and a connection failure occurs due to an insufficient connector fitting.

On the other hand, with the recent advances in computerization and electrical control in automobiles, the quality (function) of switches in the driver's seat has tended to be more sophisticated and increased. There is a need for measures to improve the formation quality and workability of forming the switch group.

The present invention solves the above disadvantages of the conventional means,
An object of the present invention is to provide a method for forming a switch and a structure thereof that meet the technical requirements in the relevant field.

Means for Solving the Problems The present invention for solving the above technical problem is described as follows. In forming a switch on an automobile instrument panel, the switch is divided into an electric part including a switch contact and a mechanical operation part. And mounting the circuit board on which the electrical part is disposed and mounted on the dashboard of the vehicle instrument panel in a temporarily held state, and thereafter, the cluster board of the vehicle instrument panel having the mechanical operation part mounted thereon. And pressing the dashboard together to correct the position of the circuit board in the temporary holding state and to position the relative positions of the paired electrical part and the mechanical operation part to form an array of switches. A first invention of "a method of forming a switch of an automobile instrument panel section," The electrical part of the switch, including the switch, is disposed on the board and is temporarily mounted on the dashboard of the vehicle instrument panel, and the mechanical operation part of the switch provided on the cluster board of the vehicle instrument panel. A switch is formed by combining the electric part and the mechanical operation part by dividing and forming, and furthermore, the relative position of the electric part in the temporary holding state and the mechanical operation part which form a pair at the time of the combination A second invention of "a switch structure of an automobile instrument panel part characterized by a structure provided with a relative position correcting means for positioning and setting a vehicle"; The circuit board to be mounted on the dashboard of the instrument panel and the cluster board of the automotive instrument panel Attaching divided form mechanical operation portion of the switch, the structure to form a switch by coupling coalescence of said electrical part and the mechanical operation portion,
Further, an automobile having a structure in which all or a part of a primary circuit connected to the circuit board is formed by a flexible printed wiring board, and the flexible printed wiring board and the circuit board are integrally formed. Switch Structure of Instrument Panel Section ".

According to the switch forming method and the switch structure of the first and second inventions, the switch group of the automobile instrument panel is divided into a mechanical operation part and an electric part, and the electric part is arranged. Since the switch is formed by combining the circuit board mounted on the dashboard and the operation part on the cluster board side, the connection between the wire harness on the primary side of the switch group and the circuit board on the dashboard becomes possible, The connection work is facilitated, and erroneous connection of the connector can be prevented by improving the workability.

And, since the circuit board with the electrical part of the switch is temporarily held on the dashboard, even if there is unavoidable dimensional variation on the dashboard side, the circuit board can be mounted on the dashboard smoothly. In addition, the circuit board in the temporarily held state is position-corrected by the relative position correction means, and is positioned and set with the mechanical operation portion on the paired cluster board side, so that a precise and good switch structure is formed. it can. Further, the flexible printed wiring board having the switch structure and the circuit board of the third invention are integrally formed, and the flexible printed wiring board is attached to a dashboard or another hard board instead of the conventional wire harness. This simplifies the structure including the primary side wiring of the switch, and promotes space saving.

"Example" Hereinafter, a detailed description will be given based on an example. First, with reference to FIG. 1 showing an embodiment of the first second invention, the first
In the automobile instrument panel unit 1 shown in FIG.
Various functions of the switch, that is, a key top of the switch, an operation spring of the switch, a switch contact, a function of generating a sense of contact of the switch, a self-holding function of the switch, a function of interlocking a plurality of keys (1)
When one key is pressed, the other keys are released, etc.). In forming a switch group 2 having various functions such as a lighting function as needed, the switch group 2 is composed of the switch group 2 shown in FIG.
(B), each of the switches is divided into an electric part 3 including switch contacts and a mechanical operation part 4, and the electric part 3 is disposed and mounted on a surface of a circuit board 6 provided with a switch circuit. At the same time, the circuit board 6 is attached to the dashboard 9 of the instrument panel section 1 so that the switch contacts 14 of the electrical section 3 face the cluster board 10 of the instrument panel section 1.

Then, the cluster board 10 is attached and fixed to the front side of the dashboard 9 to which the circuit board 6 is attached, and the operation part 4 mainly including the key top is inserted and locked at a required position of the cluster board 10, The operation part 4 and the electric part 3 are joined together to form individual switches 2.

In the above-described structure, the circuit board 6 provided with the electrical part 3 is attached to the dashboard 9 in advance, and connected to the connector 12 of the primary-side wire harness 11 and the connector on the circuit board 6 side. After a while, cluster board 10
Is mounted and fixed on the front side of the dashboard 9, and the operation part 4 of the key top previously accommodated in the switch panel 8 or the operation part 4 not using the switch panel 8 is provided in the insertion part 7 of the fixed cluster board 10. Directly mounted,
The operating part 4 and the electrical part 3 of each switch are combined and integrated to form a group of switches 2 of the instrument panel unit 1.

The electric part 3 has a functional part 13 which satisfies the necessary switch functions described above, is incorporated together with a switch contact 14 and is connected to a switch circuit, and the electric part 3 and the operation part 4 are connected. And a circuit board 6 on which the electric part 3 is arranged and mounted. The circuit board 6 on which the electric part 3 is mounted is provided for each of two groups of switches or a single switch. Prepared for two. Also, 5 in the figure
Is a metal plate for optional items.

The embodiment of FIG. 1 further includes a "means for temporarily holding the circuit board 6 on the dashboard 9" and "the circuit board 6 and the cluster board 10 in the temporarily held state are accurately positioned and combined. Relative position correcting means for performing the correction. For details (see FIG. 2), a positioning taper 15 having a guide taper 21 at the tip and the tip facing the dashboard 9 is provided.
Are projected from the cluster board 10 and the circuit board 6
A positioning hole 16 for closely penetrating the positioning pin 15 and a positioning hole 17 for tightly fitting the positioning pin 15 to the dashboard 9 are provided to constitute a relative position correcting mechanism.

Further, the locking pins 18 of the circuit board 6 are attached to the dashboard 9.
And a temporary holding hole having a gap for adjusting the position between the pin diameter of the locking pin 18 and the temporary holding of the circuit board 6 by inserting the locking pin 18 into the circuit board 6. When the circuit board 6 is attached to the dashboard 9 by inserting the locking pin 18 into the temporary holding hole 19 and fitting the stopper 20 to the pin tip, the circuit board 6 overlaps the front side of the dashboard 9. The circuit board 6 is temporarily held and is slidably held in the X-axis and Y-shape biaxial directions drawn on the front side of the dashboard 9 within the range of the gap amount of the position adjustment allowance.
Is provided.

When the cluster board 10 with the operation portion 4 is pressed against the circuit board 6 temporarily held on the dashboard 9 by the temporary holding means, the positioning pins 15 are closely fitted and penetrated into the positioning holes 16 of the circuit board 6. , The relative position between the circuit board 6 and the cluster board 10 is corrected, and
And the switch contacts 14 of the electrical part 3 are accurately positioned and associated with each other. The positioning hole 17 of the dashboard 9 is set to have a larger diameter than the positioning pin 15 so that when the positioning pin 15 is pushed in, the span variation of the positioning hole 17 due to the variation in molding of the dashboard 9 can be absorbed and fitted. It has become.

Next, another embodiment of the temporary holding means will be described with reference to FIG. That is, the positioning pins 15 and the positioning holes 16
In the apparatus having the temporary holding unit 17, a temporary holding unit including a temporary holding frame 22 is provided instead of the temporary holding unit for the circuit board 6 including the temporary holding hole 19 shown in FIG. That is, the temporary holding frame 22 has a structure in which elastic holding pieces 23 are protrudingly provided inside the frame sides to temporarily elastically hold the circuit board 6 so as to be displaceable in the frame side direction as shown in FIG. 3 (B). The amount of elastic displacement by the elastic holding pieces 23 satisfies the amount necessary for correcting the position of the circuit board 6, and the temporarily held circuit board 6 is moved in the X-axis Y-axis biaxial directions drawn on the surface of the dashboard 9. Is held so that the position can be corrected. Note that the temporary holding frame 22 is attached with the locking claws 26 fitted into the locking holes 27 of the dashboard 9.

When the cluster board 10 is pressed against the circuit board 6 in the temporarily held state, the position of the circuit board 6 is corrected by the positioning pins 15 as described above, and
And the relative position of the electrical part 3 is matched.

According to FIGS. 2 and 3, the position between the circuit board 6 and the cluster board 10 based on the dimensional variation of the dashboard 9 formed by resin is shown in FIGS. 2 (B) and 3 (C). Even if there is a shift E, the circuit board 6 can be smoothly temporarily held and attached to the dashboard 9, and the position shift E is canceled and the operation part 4 of the cluster board 10 and the electrical part 3 of the circuit board 6 are removed. If the relative positions match exactly,
The switching action is well stabilized.

On the other hand, FIG. 4 shows an embodiment of the third invention. As shown in FIGS. 1 to 3, the switch 2 is divided into an electric part 3 and a mechanical operation part 4, and The circuit board 6 provided with the target part 3 is attached to the dashboard 9 and joined to the cluster board 10 having the mechanical operation part 4 inserted therein to form the switch 2. Instead of the conventional wire harness 11 for the primary side wiring of the circuit board 6, a flexible printed wiring board 24 on which a key circuit is printed is used, and the flexible printed wiring board 24 and the electrical part 3 are connected. The disposed circuit board 6 is integrally formed.

According to the fourth embodiment, since the flexible printed wiring board 24 may be attached to the dashboard 9, the space required for the primary side circuit is reduced, so that the space is remarkably reduced. The switch structure including the primary side circuit is simplified, and the work of connecting the connector and the connector is omitted, so that the operability of forming the switch is improved.

[Effects of the Invention] As described above, the method for forming a switch of an automobile instrument panel section and the switch structure of the present invention improve the workability of forming the switch and prevent quality defects such as erroneous connection. It has the effect of improving quality and responding to technical requirements in the field.

[Brief description of the drawings]

FIG. 1 shows a method for forming a switch and a switch structure thereof according to an embodiment of the present invention, and FIG.
(B) is a perspective view of a main part thereof, (C) is an external perspective view of an automobile instrument panel after a switch is formed,
FIG. 7A shows a position correction mechanism according to another embodiment of the present invention, and FIG.
Is a perspective view of the component, (B) is a plan view of the operating state, FIG. 3 shows a position correcting mechanism of another embodiment of the present invention, (A) is a perspective view of the component, (B) ) Is a front view of the operation state, (C) is a plan view of the operation state,
Fig. 5 is a perspective view showing a main part of an embodiment of the present invention. Fig. 5 is a perspective view showing a conventional method of forming a switch and its switch structure. , 3: Switch electrical part, 4: Switch operation part, 6: Circuit board, 7: Insertion part, 8: Switch panel, 9: Dashboard, 10: Cluster board, 11: Wire harness,
12: Connector, 13: Functional component, 14: Switch contact, 15: Positioning pin, 16, 17: Positioning hole, 18: Locking pin, 19: Temporary holding hole, 21: Guide taper, 22: Temporary holding frame, 23 : Elastic holding piece, 24: Flexible printed wiring board

Continuation of the front page (56) References JP-A-4-126318 (JP, A) JP-A-2-95949 (JP, A) JP-A-1-269106 (JP, A) JP-A-3-203122 (JP) JP-A-2-299294 (JP, A) JP-A-2-20941 (JP, A) JP-A 62-162134 (JP, U) JP-A 61-44727 (JP, U) (58) Surveyed field (Int.Cl. ⁶ , DB name) H01H 11/00 H01H 9/02 B60R 16/02

Claims (4)

(57) [Claims] In forming a switch on an automobile instrument panel, the switch is divided into an electric part including switch contacts and a mechanical operation part, and a circuit board on which the electric part is disposed is mounted on the automobile. Attach it to the dashboard of the instrument panel in a temporary holding state,
Thereafter, by pressing and combining the cluster board and the dashboard of the automobile instrument panel portion to which the mechanical operation portion is attached, the position of the circuit board in the temporarily held state is corrected and the electric portion to be paired is formed. And forming the switches in the vehicle instrument panel by positioning the switches relative to each other and the mechanical operation portion. 2. A circuit board for arranging an electrical portion of a switch including a switch contact on a board and temporarily holding the electrical portion on a dashboard of an automobile instrument panel, and a cluster board of the automobile instrument panel. The switch is divided into mechanical operation portions, and the switch is formed by combining the electrical portion and the mechanical operation portion. A switch structure of an automobile instrument panel, comprising a relative position correcting means for positioning and setting a relative position of the mechanical operation portion. 3. The circuit board is mounted on an X-axis Y of a surface of a dashboard.
Temporary holding means for temporarily holding the position in the two axial directions so as to be freely corrected, positioning tapered positioning pins protruding from the cluster board, and positioning holes and the positioning pins of the circuit board which closely penetrate the positioning pins. The switch structure of an automobile instrument panel according to claim 2, further comprising a relative position correcting means comprising a positioning hole of said dashboard. 4. A circuit board for arranging electrical parts of a switch including switch contacts on a board to be mounted on a dashboard of a vehicle instrument panel, and a mechanical part of a switch mounted on a cluster board of a vehicle instrument panel. A switch formed by combining and combining the electric part and the mechanical operation part, and furthermore, all or a part of a primary circuit connected to the circuit board is flexible. Formed by printed wiring board,
A switch structure for an automobile instrument panel, wherein the flexible printed wiring board and the circuit board are integrally formed.