JP4093508B2 - Assembly structure of combination switch structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides, for example, a combination switch configured by combining a switch for operating an electrical component disposed in various places of a vehicle while penetrating a shaft of a steering wheel, and an airbag system that has recently been required to be mounted. The present invention relates to an assembly structure of a combination switch structure, in which an airbag coil to be configured has a simpler structure and an assembly structure that allows easy replacement of parts.
[0002]
[Prior art]
The steering shaft that holds the steering wheel in recent vehicles is required to be equipped with a combination switch that is configured so that the electrical components incorporated in various parts of the vehicle can be operated centrally and at hand. The air bag coil which comprises the reached air bag system is penetrated, and it is hold | maintained together.
For example, as shown in FIG. 3, the combination switch structure 2 is mounted on the steering lock mechanism unit 1 and fixed with screws, and an airbag coil case in which an airbag connection cable is accommodated on the combination switch structure 2. The steering shaft 4 is inserted from the steering lock mechanism unit 1 through the airbag coil case 3 and assembled.
[0003]
[Problems to be solved by the invention]
By the way, the mechanically movable parts and contacts in the combination switch structure 2 are inevitably worn out or cause poor contact due to long-term use. Some need to be replaced.
Therefore, in order to take out the combination switch structure 2, first, the airbag coil case 3 must be removed.
On the other hand, these structures are incorporated into the case independently of each other, such as the steering lock mechanism unit 1, the combination switch structure 2, and the airbag coil case 3, and the cases are connected by screwing. It is the composition.
For this reason, a large installation space is required, the number of parts is large, design restrictions are imposed, and the assembly process is complicated. On the other hand, it is difficult to reduce the maintenance cost and the manufacturing cost. .
The present invention has been proposed from such a background, for example, a combination switch configured by combining a switch for penetrating a shaft of a steering wheel and operating electrical components disposed in various parts of the vehicle. And an assembly structure of a combination switch structure in which an airbag coil that constitutes an airbag system that is required to be installed in recent years has a simpler structure and an assembly structure that facilitates component replacement. With the goal.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides an airbag system for assembling a combination switch structure incorporating switches for operating electrical components provided in a vehicle near the steering shaft near the steering wheel. The air bag coil case that accommodates the connecting cable that electrically connects with the fluid generating means for the air bag built in the steering wheel is spirally housed and fixed to the protrusion provided on the steering lock mechanism unit. this to overlap from above the airbag coil case, screwing and fixing said by arranging the combination switch structure compared to the projections provided in the steering lock mechanism unit to elongated columnar members, the steering Lock mechanism uni DOO, the airbag coil case, and the combination switch structure, by inserting the steering shaft and to hold the steering shaft around the vicinity of the steering wheel near.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, one embodiment of the assembly structure of the combination switch structure according to the present invention is shown, and will be described below with reference to the accompanying drawings.
FIG. 1 shows a combination switch structure 10 incorporating switches for operating electrical components installed in a vehicle, and a fluid generating means for an airbag incorporated in a steering wheel, which constitutes an airbag system. The airbag coil case 11 which accommodated the connecting cable to connect in spiral shape is shown.
The combination switch structure 10 and the airbag coil case 11 are fixed to the projection 13 for fixing the airbag coil case 11 provided in the steering lock mechanism unit 12 by screwing, and The combination switch structure 10 is disposed so as to overlap the airbag coil case 11 and is fixed to the columnar member 14 which is longer than the protrusion 13 by screwing.
A steering shaft 15 is inserted through the combination switch structure 10 and is held at the upper end of the steering shaft 15 near the steering wheel.
[0006]
The steering lock mechanism unit 12 is integrally formed with an insertion pipe 16 that passes through the steering shaft 15 and a lock mechanism case 17 that incorporates a lock mechanism (not shown) for restraining the steering shaft 15 inserted through the insertion pipe 16. The projecting portion 13 for fixing the airbag coil case 11 to the insertion pipe 16 and the lock mechanism case 17, and the columnar member 14 for attaching and holding the combination switch structure 10, Is protruding.
[0007]
Next, the airbag coil case 11 will be described.
That is, as shown in FIG. 2, the air bag coil case 11 is concentrically rotatable with the stator at the center of the stator, the lid member 18 mounted so as to cover the stator (not shown) fixed to the columnar member 14. And a rotor 19 attached to the.
Further, the rotor 19 of the airbag coil case 11 has a space S through which the steering shaft 15 is to be inserted, and a cage-type driven member 20 that rotates following the inserted steering shaft 15 is fitted therein. The cage driven member 20 protrudes from the upper surface of the rotor 19 by a predetermined dimension. The protruding portion is inserted into an insertion hole (described later) in the combination switch structure 10 described later so as to overlap the alignment state. I have to.
In the airbag coil case 11, the top of the protrusion 13 is abutted on the lower side of the outer peripheral side surface of the lid member 18 mounted on the stator and the stator, and is fixed to the protrusion 13 with screws (not shown). For this purpose, a projecting piece 21 is provided.
Further, the cage driven member 20 automatically rotates together with the steering shaft 15 and the rotor 19 to engage with a return lever (described later) formed in the insertion hole 15 in the combination switch structure 10 to automatically Further, a cancel rib 22 for returning an operation lever (described later) in the combination switch structure 10 is formed.
Further, from the upper edge 20a of the cage-type driven member 20, a belt-shaped cable housed in the airbag coil case 11, and gas generating means for an airbag (not shown) constituting an airbag system provided on the steering wheel, A connector portion 23 for connecting a connection cable (not shown) to be electrically connected is projected.
[0008]
And the combination switch structure 10 arrange | positioned on the airbag coil case 11 has assembled | attached the casings 26 and 27 which incorporate many contact points on the one housing | casing 24 on both sides of the insertion hole 25 formed in the center. Thus, operation levers 28 and 29 for operating the contacts in the casings 26 and 27 are projected.
One operation lever 28 is for operating mechanisms such as EXH & retarder, wiper, washer, hazard, into time, etc., and is provided so that it can be operated in a specific direction and stroke, respectively.
The other operation lever 29 has a function for operating mechanisms and functions such as turn, lane change, cornering, dimmer & passing, lighting, auto cruise, fog and the like.
[0009]
According to the assembly structure of the combination switch structure 10 as described above, the combination switch structure 10 is not directly connected to the airbag coil case 11, and is a combination switch having many mechanically movable elements. Since the structure 10 is attached so as to overlap the upper part of the air bag coil case 11, the combination switch structure 10 is fixed to the columnar member 14 when the combination switch structure 10 needs to be replaced after a long period of use. The screw (not shown) to be loosened by a driver or the like can be removed from the steering lock mechanism unit 12 without affecting the airbag coil case 11.
Therefore, it is not necessary to remove the airbag coil case 11 as in the prior art, and the labor of the replacement work can be shortened and facilitated.
In addition, since the combination switch structure 10 and the airbag coil case 11 are separately attached to the steering lock mechanism unit 12, the mounting space can be reduced and the number of parts can be reduced. The assembly and mounting process can be simplified.
Since the combination switch structure 10 is brought to the top, the operation levers 28 and 29 have a special shape (e.g., from the casings 26 and 27 to the extreme end side of the operation levers 28 and 29 as before). The operation levers 28 and 29 are inevitably close to the steering wheel, so that the operability is good.
[0010]
【The invention's effect】
As described above, according to the present invention, compared to the conventional structure, the combination switch and the airbag coil that constitutes the airbag system that has recently been required to be installed can be replaced more simply and with parts replacement in the combination switch. Assembling can be performed without any trouble, space for mounting around the steering shaft can be reduced, and the number of parts can be reduced, so that the assembly process and cost can be sufficiently suppressed. .
[0011]
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an external perspective view showing one embodiment of an assembly structure of a combination switch structure according to the present invention.
2 is an exploded perspective view of the assembly structure of the combination switch structure shown in FIG. 1. FIG.
FIG. 3 is an exploded perspective view showing an example of a conventional assembly structure of a combination switch structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Combination switch structure 11 Airbag coil case 12 Steering lock mechanism unit 13 Protrusion part 14 Columnar member 15 Steering shaft 16 Insertion pipe 17 Locking mechanism case 18 Cover member 19 Rotor 20 Cage type driven member 20a Upper edge 21 Projection piece 22 Cancel rib 23 Connector part 24 Case 25 Insertion hole 26, 27 Casing 28, 29 Operation lever

Claims (1)

The fluid for the airbag built in the steering wheel that constitutes the airbag system when the combination switch structure incorporating the switches for operating the electrical components installed in the vehicle is assembled near the steering shaft near the steering wheel. The airbag coil case that accommodates the connection cable that is electrically connected to the generating means is spirally accommodated and fixed to the protrusion provided on the steering lock mechanism unit by screwing , and is superimposed on the airbag coil case from above. the combination switch structure arranged to be compared with the projections provided in the steering lock mechanism unit screwed to secure the long columnar member, the steering lock mechanism unit, the airbag coil case and, A serial combination switch structure, wherein by inserting the steering shaft, the assembly of the combination switch structure being characterized in that so as to hold the steering shaft around the vicinity of the steering wheel near the structure.

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