JPH0441010Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Field of the Invention>> This invention relates to an improvement of a jacket tube that surrounds the base of a steering shaft projecting from above the floor surface.

<Prior art and its problems> This type of jacket tube surrounds the protruding end base of the steering shaft that penetrates the dash panel and protrudes above the floor surface of the vehicle interior, and blocks noise in the engine room. Used to seal around the base of the steering shaft.

The structure of this type of jacket tube will be explained based on FIGS. 3 to 5. The jacket tube 1 is a flange that covers the surface of a cover hole 2 (a member that closes a steering shaft through hole opened in a vehicle body panel). 3 and a hollow rising portion 4 that stands upright at the center of the flange portion 3 and surrounds the outer periphery of the steering shaft, and is usually made of an injection molded resin.

When installing this jacket tube 1, as shown in FIGS. 4 and 5, a locking claw 3a bent at a predetermined location on the outer periphery of the flange portion 3 of the jacket tube 1 is inserted into the cover hole. After inserting the bolt 5, which is engaged and fixed to the outer circumferential edge 2a of the cover hole 2 and protruded toward the indoor side from the vehicle body panel, into the mounting holes 6 and 7 provided in the cover hole 2 and the jacket tube 1, respectively, and then tighten the nut 8. The assembly is completed by tightening from the surface side of the jacket tube 1.

However, the jacket tube 1 mentioned above
In this case, it has been pointed out that since the bolts 5 and nuts 8 are exposed from the surface of the jacket tube 1, the sound insulation properties of these parts are extremely poor, making it impossible to maintain sufficient quietness in the vehicle interior.

[Purpose of the invention] This invention was made in view of the above-mentioned circumstances, and the purpose of this invention is to improve the sound insulation properties of the jacket tube, thereby greatly contributing to the quietness of the vehicle interior. Our goal is to provide a jacket tube that can be used for various purposes.

<Configuration and Effects of the Invention> In order to achieve the above object, the present invention includes a flange portion that covers the surface of a cover hole that closes a steering shaft through hole opened in a vehicle body panel, and a flange portion that is erected in the center of this flange portion. and a rising portion surrounding the steering shaft, the jacket tube having a bent piece formed by bending a part of the outer periphery of the flange portion to engage with the outer periphery of the cover hole. is fixed by
A feature is that a hole that can be opened and closed is formed in the flange portion of the cover hole at a location corresponding to the bolt attachment portion.

That is, in the case of the jacket tube according to the present invention, there is a flange portion that covers the surface of the cover hole (a member that closes the steering shaft through hole opened in the vehicle body panel), and a rising portion that surrounds the outer periphery of the steering shaft. In particular, a hole that can be opened and closed is formed in the flange part of the cover hole corresponding to the bolt attachment part, and when the cover hole is attached to the vehicle body panel, this hole is opened and Since the above-mentioned hole is closed, a hole is formed in the jacket tube at the location where the cover hole is attached, as in the conventional case, and noise from the engine compartment side is transmitted through this hole. This has the effect of reliably preventing the noise from being transmitted to the interior of the vehicle, significantly increasing the quietness within the vehicle interior.

<<Description of Embodiments>> Hereinafter, one embodiment of the jacket tube according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an overall perspective view illustrating the mounting state of the jacket tube showing the first embodiment of the present invention;
The figure is a perspective view of a jacket tube showing a second embodiment of the present invention.

In FIG. 1, the jacket tube 10 is
It is made of a synthetic resin injection molded body, and has a flange portion 11 that is slightly larger than the outer diameter of the cover hole (a member that closes the steering shaft through hole opened in the vehicle body panel) 2, and a flange portion 11 that is erected in the center of the flange portion 11, as shown in the figure. A hollow rising portion 12 surrounds the outer periphery of the steering shaft, and a bent piece 13 bent inwardly on the lower side is formed at a predetermined location on the outer periphery of the flange portion 11. The jacket tube 10 is attached to the cover hole 2 by engaging the bent piece 13 with the outer peripheral edge.

Multi-slits 14 are formed at predetermined locations (three locations in the case shown in FIG. 1) of the flange portion 11 so as to intersect with each other at the center.

Then, the bolt 5 protruding from the vehicle body panel (not shown) toward the interior of the vehicle is inserted into the mounting hole 6 of the cover hole 2.
After inserting the nut 8 through the slit 14, it is sufficient to tighten it from the tip of the bolt 5. Therefore, after the nut 8 is screwed onto the bolt 5, no hole is formed in the flange portion 11 of the jacket tube due to the restoring action of the resin, which prevents noise from being propagated from the engine room side. be able to.

In order to effectively utilize the restoring effect of the resin, the portion where the slits 14 are formed is preferably formed in a so-called tapered shape, in which the plate thickness gradually decreases toward the intersection 14a of the slits 14.

Next, a second embodiment shown in FIG. 2 will be described. In this embodiment, an open/close cover body 15 is provided at a predetermined location of the flange portion 11 in place of the slit 14 of the previous embodiment. When tightening the bolts in the cover hole 2, rotate the opening/closing cover body 15 outward around the hinge part 16 at one end, and
The nut 8 is screwed onto the bolt 5 through the hole 17, and after the installation is completed, the opening/closing cover body 15 is fitted into the hole 17 to close this part.

Note that both sides of the opening/closing cover body 15 are formed in a tapered shape to prevent the cover body 15 from fitting into the hole 17 more than necessary.
An engaging piece 18 is integrally provided at the tip of the opening/closing cover body 15 in the hole 17 .
In this second embodiment, similarly to the first embodiment, the hole 17 is opened, the cover hole 2 is tightened with bolts, and then the opening/closing cover body 15 is engaged in the hole 17, whereby the conventional hole is formed. By creating a closed structure, noise from the engine room side is prevented from propagating into the passenger compartment, resulting in an effect that improves the quietness of the passenger compartment.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view illustrating the mounting state of the jacket tube showing the first embodiment of the present invention;
The figure is a perspective view of a jacket tube showing a second embodiment of the present invention, FIG. 3 is an overall perspective view illustrating the mounting state of a conventional jacket tube, and FIG.
FIG. 5 is a cross-sectional view taken along the line - in FIG. 3, and FIG. 2... Cover hole, 5... Bolt, 8... Nut, 10... Jacket tube, 11... Flange portion, 12... Rising portion, 13... Bent piece, 14... Slit, 15... opening/closing cover body,
17... Hole.

Claims (1)

[Claim for Utility Model Registration] Consists of a flange portion that covers the surface of a cover hole that closes a steering shaft through hole opened in a vehicle body panel, and a rising portion that stands in the center of this flange portion and surrounds the steering shaft. The jacket tube is fixed by engaging a bent piece formed on a part of the outer periphery of the flange portion with the outer periphery of the cover hole, and
A jacket tube characterized in that a hole that can be opened and closed is formed in a flange portion of a cover hole corresponding to a bolt attachment portion.