JP4396844B2 - Steering column cover mounting structure - Google Patents

Description

  The present invention relates to a steering column cover mounting structure for mounting a steering column cover having a divided structure on a steering column of an automobile.

In general, a box-like steering column cover that covers a steering switch integrated with a turn signal switch, a light control switch, a wiper switch and the like disposed on the back of a steering wheel is attached to a steering column of an automobile. Conventionally, as shown in Patent Document 1, for example, a steering column cover has an upper and lower divided structure composed of an upper cover and a lower cover, and one of these (for example, the lower cover) is attached to a steering switch fixed to the steering column. It is attached to the steering column by screwing and snap-joining the upper cover and the lower cover to each other.
JP-A-8-332961

  Since the steering column cover needs to be firmly attached to prevent falling off, it is often screwed as described above, but in this case, since the attachment screw is exposed to the outside, it does not look good, Since mounting screws are required, there are problems that the number of parts increases and the mounting process becomes complicated.

  The present invention has been made in view of the above points, and a steering column cover mounting structure capable of easily and firmly mounting a steering column cover to a steering column without the need for fasteners such as mounting screws. The purpose is to provide.

In order to solve the above-mentioned problem, the invention according to claim 1 is a steering cover mounting structure in which the first cover and the second cover having a split structure are integrally coupled to each other by snap engagement to be mounted on the steering column.
Said mounting boss provided on the fixed member fixed to the steering column, the said mounting boss of the first engagement portion provided on the first cover, engages the engagement between the pin and the pin hole, supported by the mounting boss In addition, the first cover and the second cover are integrally coupled by engaging with the first engagement portion so as to overlap the second engagement portion provided on the second cover. .
According to a second aspect of the present invention, there is provided a steering cover mounting structure according to the first aspect, wherein the fixing member is a steering switch.
According to a third aspect of the present invention, there is provided the steering cover mounting structure according to the first or second aspect, wherein the second cover is attached to the first engagement portion of the first cover attached to the fixing member. The second engagement portion is engaged, and the engagement portion between the first engagement portion and the second engagement portion is rotated as a fulcrum to be coupled to the first cover.

  According to the steering column cover mounting structure of the present invention, the second engaging portion is engaged with the first engaging portion of the first cover that is supported by being engaged with the mounting boss of the fixing member fixed to the steering column. By combining, the coupling strength and rigidity of the first cover and the second cover to the fixing member can be increased, so that the steering column cover can be easily and firmly attached to the steering column without using fasteners such as mounting screws. Can be installed.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 4, the steering column cover 1 according to this embodiment is a cover body made of synthetic resin having elasticity such as polypropylene covering a steering switch 3 attached to a steering column 2 of an automobile, An upper and lower divided structure composed of an upper cover 4 (first cover) and a lower cover 5 (second cover) is formed. The steering switch 3 is an integral part of a turn signal switch 6, a light control switch 7, an ignition switch 8, and the like. The steering switch 3 is disposed on the back of a steering wheel attached to the tip of the steering shaft 9, and is steered by known means. It is fixed to the column 2. In FIG. 1, reference numeral 10 denotes a lock and unlock lever for adjusting the fixed position of the steering column 2.

  The upper cover 4 and the lower cover 5 have substantially semicircular cutouts 12, 13, 14 and cutouts for inserting and fitting the steering wheel mounting portion 11, the turn signal switch 6 and the light control switch 7 protruding from the steering switch 3. 15, 16, and 17 are formed, and the lower cover 5 is formed with a substantially circular opening 18 through which the ignition switch 8 is inserted and fitted.

  A pair of pin engaging claws 19 (first engaging portions) project from both sides of the front portion (steering wheel side) cutout 12 at the joint portion between the upper cover 4 and the lower cover 5. An engaging portion 20 (see FIG. 8) is formed adjacent to 14, and an engaging claw 21 protrudes from a central portion inside the upper surface. As shown in FIG. 5, the pin engaging claw 19 is formed with a pin 23 that is inserted and fitted into a cylindrical pin boss 22 (mounting boss) having a pin hole provided in the steering switch 3. An inclined surface 23 </ b> A is formed at the tip of the pin 23. Further, on the back side of the pin 23 of the pin engaging claw 19, an engaging portion 24 in which a locking projection 24 </ b> A protrudes at the tip portion is formed.

  As shown in FIG. 6, the engaging claw 21 protruding to the inner side of the upper surface of the upper cover 4 is inserted into the engaging hole 25 </ b> A of the bracket 25 provided in the steering switch 3, and is expanded. It is supposed to be fixed. Note that the bracket 25 provided on the steering switch 3 may be of a cantilever type as shown by a phantom line in addition to the cantilever type shown by a solid line in FIG. Further, the engaging claw 21 may be fitted to the outside of the bracket 25 as shown in FIG.

The lower cover 5 is joined to the upper cover 4 by engaging portions 26 (first engagement portions) that snap-engage with the engaging portions 24 of the pair of pin engaging claws 19 and the engaging portions 20 on both sides of the upper cover 4. 2 engaging portions) and engaging claws 27 are formed. Here, the engaging portions 24 and the engaging portions 20 of the pin engaging claws 19 of the upper cover 4 and the engaging portions 26 and engaging claws 27 of the lower cover 5 snap-engaged with these are shown in FIG. As shown in FIG. 11, first, after engaging with the engaging portion 24 of the pin engaging claw 19 so as to overlap the engaging portion 26, the lower cover 5 is moved in the direction of the arrow with these engaging portions as fulcrums. The two engaging portions 20 and the engaging claws 27 are snap-engaged with each other by rotating and are coupled to each other. Note that positioning pins and pin holes may be provided on the coupling surface between the upper cover 4 and the lower cover 5 as necessary.

Next, a process for attaching the steering column cover 1 to the steering column 2 according to the present embodiment will be described.
First, as shown in FIGS. 6 and 7, the tip of the engaging claw 21 of the upper cover 4 is applied to the engaging hole 25A of the bracket 25 of the steering switch 3, and the upper center of the upper cover 4 is pressed to engage the engaging cover 25A. The claw 21 is engaged with the bracket 25. Next, as shown in FIG. 9, when the upper portion of the upper cover 4 is pressed in the direction of the arrow (1), the upper cover 4 is bent and the pin 23 of the pin engaging claw 19 moves along the inclined surface 23A at the tip thereof. Then, it is inserted into the pin hole of the pin boss 22. In this state, the pin 23 can be pressed into the pin boss 22 by pressing the pin engaging claw 19 in the direction of the arrow (2) (FIG. 9 shows a state in which the pin 23 is fitted to the pin boss 22. ). In this way, the upper cover 4 can be attached to the steering switch 3 fixed to the steering column 2. At this time, the engagement claw 21 and the bracket 25 are engaged, the pin 23 of the pin engagement claw 19 is fitted to the pin boss 22, and the notches 12, 13, 14 are fitted to the turn signal switch 6 and the light control switch 7. Accordingly, the upper cover 4 can be reliably positioned with respect to the steering switch 3 in the front-rear, left-right, and up-down directions.

  Next, the lower cover 5 is attached to the upper cover 4 from below. As shown in FIGS. 10 and 11, first, the engaging portion 26 of the lower cover 5 is engaged with the engaging portion 24 of the pin engaging claw 19 of the upper cover 4, and then the lower cover 5 with these engaging portions as fulcrums. The lower cover 5 can be easily coupled to the upper cover 4 by snap-engaging the engaging claws 27 and the engaging portions 20 on both side portions by rotating in the direction of the arrow. At this time, the engagement between the engagement portion 26 and the engagement portion 24 of the pin engagement claw 19, the engagement between the engagement claw 27 on both sides and the engagement portion 20, the notches 16, 17 and the turn signal switch 6 and By fitting with the light control switch 7 and the opening 18 and the ignition switch 8, the lower cover 5 can be reliably positioned with respect to the steering switch 3 and the upper cover 4 in the front and rear, right and left, and up and down directions.

  Further, since the pin engaging claw 19 of the upper cover 4 to which the engaging portion 26 of the lower cover 5 is engaged is supported by the pin 23 being fitted to the pin boss 22 of the steering switch 3, the lower cover 5 is engaged. The coupling strength and rigidity between the portion 26 and the engaging portion 24 of the pin engaging claw 19 of the upper cover 4 can be sufficiently increased, and the lower cover 5 can be reliably prevented from falling off.

  In this way, the steering column cover 1 can be easily and firmly attached to the steering column 2 without using fasteners such as attachment screws. Further, since a fastener such as a mounting screw is not necessary, the appearance is good, the number of parts and assembly man-hours can be reduced, and the manufacturing cost is low.

  Removal of the steering column cover 1 from the steering column 2 can be performed as follows. Contrary to the mounting procedure described above, both side portions of the lower cover 5 are pressed to release the engagement between the engaging claws 27 and the engaging portion 20, and then the lower cover 5 is rotated in the direction opposite to that during mounting. Thus, the engagement between the engaging portion 26 and the engaging portion 24 of the pin engaging claw 19 is released, and the lower cover 5 is removed from the upper cover 4. Further, the upper cover 4 is removed from the steering switch 3 in the reverse procedure of the attachment.

In the above embodiment, as shown in FIGS. 12 and 13, the locking protrusion 24 </ b> A at the tip of the pin engaging claw 19 is omitted, and instead, the snap engaging claw that snap-engages with the upper cover 4 and the lower cover 5. 28, 29 is provided, it is also possible to combine the upper cover 4 and lower cover 5, the same action as described above even in this case, effects can be achieved.

It is a disassembled perspective view which shows the steering column cover attachment structure which concerns on one Embodiment of this invention. FIG. 2 is a front view showing a state where the steering column cover shown in FIG. 1 is attached to the steering column. FIG. 2 is a side view showing a state where the steering column cover shown in FIG. 1 is attached to the steering column. FIG. 2 is a plan view showing a state where the steering column cover shown in FIG. 1 is attached to the steering column. It is a longitudinal cross-sectional view by the AA line of the principal part of FIG. It is a longitudinal cross-sectional view by the BB line of the principal part of FIG. It is a longitudinal cross-sectional view by the BB line of the principal part of the modification of FIG. FIG. 2 is a perspective view of an engagement portion between an upper cover and a lower cover on a side surface portion of the steering column cover shown in FIG. 1 as viewed from the inside. FIG. 2 is a longitudinal sectional view showing a state where a pin engaging claw of an upper cover is attached to a pin boss of a steering switch in the steering column cover shown in FIG. 1. FIG. 2 is a longitudinal sectional view showing a process of attaching an engaging portion of a lower cover to a pin engaging claw of an upper cover attached with a pin boss of a steering switch in the steering column cover shown in FIG. 1. FIG. 2 is a longitudinal sectional view showing a process of attaching a lower cover to an upper cover attached to a steering switch in the steering column cover shown in FIG. 1. FIG. 6 is a longitudinal sectional view similar to FIG. 5 according to a modification of the steering column cover shown in FIG. 1. It is the perspective view which looked at the engaging part of the pin engaging claw of the upper cover of the modification shown in FIG. 12, and the engaging part of a lower cover from the inner side.

Explanation of symbols

1 Steering cover, 2 Steering column, 3 Steering switch (fixing member), 4 Upper cover (1st cover), 5 Lower cover (2nd cover), 19 Pin engaging claw (1st engaging part), 22 Pin boss (Mounting) Boss), 26 engaging portion (second engaging portion)

Claims (3)

A steering cover mounting structure in which a first cover and a second cover having a divided structure are integrally coupled by snap engagement to be mounted on a steering column,
Said mounting boss provided on the fixed member fixed to the steering column, the said mounting boss of the first engagement portion provided on the first cover, engages the engagement between the pin and the pin hole, supported by the mounting boss In addition, the first cover and the second cover are integrally coupled by engaging with the first engagement portion so as to overlap the second engagement portion provided on the second cover. Steering cover mounting structure. The steering cover mounting structure according to claim 1, wherein the fixing member is a steering switch. The second cover engages the second engagement portion with the first engagement portion of the first cover attached to the fixing member, and the first engagement portion and the second engagement portion 3. The steering cover mounting structure according to claim 1, wherein the steering cover mounting structure is coupled to the first cover by rotating the engagement portion with the first cover.

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