JP2004114717A - Rustproofing cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rustproofing cap whose securing operation and removing operation can be easily carried out and which can be reused. <P>SOLUTION: The rustproofing cap 30 has a cap body portion 31 covering the disk portion 21a of a disk wheel 21, an engaging portion 31 engaging with the groove portion 21e of a rim portion 21b, and a grab 32. The rustproofing cap 30 constructed in this way is fitted from the outer side of a car, and prevent drops of water passing through a through hole 21c provided in a disk portion 21a from contacting the disk rotor 11 of a disk brake unit 10. Accordingly, the surface of the disk rotor 11 facing outside of the car is prevented from rusting without needing assembling process. Further, the rustproofing cap 30 can be very easily removed by operator pulling the grab 32 in an outer direction of the car. Furthermore, because the rustproofing cap 30 is not broken, the rustproofing cap 30 can be used again. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rust prevention cap for preventing rust of a disc rotor of a disc brake device generated during storage and transportation of an assembled vehicle, for example.
[0002]
[Prior art]
The vehicle may be exposed to the open air for storage or the like from completion of assembly to delivery. Moreover, in order to transport the assembled vehicle, it may be transported by sea. In these cases, water droplets, moist air, or salty air may come into contact with the disc rotor of the disc brake device of the vehicle to generate rust. The rust of the disc rotor is generated when water droplets, moist air or air containing salt passes through a through hole for cooling a disc brake device provided in the disc wheel and touches the disc rotor.
[0003]
For this reason, conventionally, for example, a rust prevention cap as shown in Patent Document 1 is known. The rust prevention cap is formed in a substantially annular shape using paper fiber, and is interposed between the disc rotor and the disc wheel of the disc brake device when the vehicle is assembled. Thus, the antirust cap covers the surface of the disk rotor facing the outside of the disk from the disk wheel side, and prevents the surface from coming into contact with water droplets, damp air, or salty air. In addition, the disk which protects a disk rotor from the mud and water droplet which jump up by driving | running | working of a vehicle is previously provided in the surface facing the vehicle inner side of the disk rotor. When the vehicle is stored or transported, this disk protects the disk rotor from water droplets.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-203423
[Problems to be solved by the invention]
However, in the conventional rust prevention cap, it is necessary to assemble the rust prevention cap between the disc brake device and the disc wheel when the vehicle is assembled. For this reason, vehicle assembly work becomes complicated. The rust prevention cap is removed from the vehicle when the vehicle is sold or when it is transported by sea and landed. However, since the conventional rust prevention cap is interposed between the disc brake device and the wheel, when removing the rust prevention cap, the vehicle wheel is once largely turned left or right or the vehicle is jacked. It must be removed after the rust prevention cap is visible from the outside of the vehicle. For this reason, the removal work of a rust prevention cap is complicated. Moreover, since the rust prevention cap is substantially annular, when removing it, it is necessary to break a part and remove it. For this reason, the force for breaking a rust prevention cap is required, and a physical burden is imposed on an operator. Moreover, since a part of the rust prevention cap is broken and removed, the rust prevention cap once used cannot be reused.
[0006]
SUMMARY OF THE INVENTION
The present invention has been made to cope with the above-described problems, and an object of the present invention is to provide a reusable anti-rust cap that can be easily assembled and removed.
[0007]
A feature of the present invention is that the rust preventive cap is detachably attached to the outside of the disc wheel constituting the wheel, and includes a cap body portion that closes a through hole provided in the disc portion of the disc wheel when the disc wheel is installed. This is to prevent rust generated in the disc rotor of the disc brake device disposed in the rim portion.
[0008]
In this case, the cap main body portion may cover the entire disc portion of the disc wheel at the time of mounting. Also, it is preferable that a plurality of small protrusions are provided on the outer peripheral portion of the cap main body portion so that each small protrusion can be engaged with and disengaged from the rim portion. Moreover, it is good for the said cap main-body part to provide the handle extended outside a vehicle in the state with which the said cap main-body part was mounted | worn with the said disc wheel. Moreover, it is good to form the elongate hole which can insert the air injection valve arrange | positioned at the said rim | limb part in the said handle. Moreover, it is good to provide a slit in the said cap main-body part, and to form the division | segmentation piece which can deform | transform. Furthermore, it is preferable that the cap main body is detachably mounted in an annular groove formed on the inner peripheral surface of the rim portion of the disc wheel.
[0009]
According to these features, the rust prevention cap is detachably mounted from the outside of the vehicle and can block the through hole of the disc wheel. Thereby, it is not necessary to provide a process for attaching a rust prevention cap, and it is possible to block water droplets, damp air, or salt-containing air entering from a through hole provided in the disc wheel. For this reason, the rust which generate | occur | produces in a disk rotor can be prevented. Moreover, in order to remove the rust preventive cap, it is not necessary to cut the wheel to the left or right or to jack up the vehicle. Therefore, the work of removing the rust prevention cap can be performed very easily.
[0010]
The rust prevention cap can also cover the entire disc portion of the disc wheel. Thus, the rust prevention cap can prevent rust generated on the disk rotor of the disk brake device, and also prevent rust generated particularly on the surface of the steel disk wheel.
[0011]
In addition, a plurality of small protrusions can be provided on the outer peripheral portion of the cap main body portion so as to be engaged with and disengaged from the rim portion. As described above, by providing a plurality of small protrusions on the outer peripheral portion, the contact between the outer peripheral portion of the cap main body portion and the rim portion becomes discontinuous contact (point contact). Thereby, the contact area of the outer peripheral part of a cap main-body part and a rim | limb part becomes small, and the frictional force resulting from a contact can be made small. Therefore, the worker can attach and detach the rust prevention cap with an extremely small force.
[0012]
Moreover, a handle can be provided in a cap main-body part, and a handle can be extended outside a vehicle in the state which mounted | wore the antirust cap with the disc wheel. For this reason, the operator can remove the rust prevention cap very easily by pulling the extended handle. In addition, by forming a slit in the cap main body, the operator can, for example, insert a finger to tilt the split piece in the vehicle interior direction, pull the anticorrosion cap with the finger, and remove it very easily. . Further, by forming the slit in the cap main body portion, it is possible to eliminate the portion protruding outward from the vehicle, and thus the rust prevention cap can be made more compact. Furthermore, since the rust prevention cap is not destroyed when the rust prevention cap is removed, the removed rust prevention cap can be used again.
[0013]
Further, by providing a long hole for inserting the air injection valve in the handle, the rust prevention cap can be attached to the disc wheel without any gap. In addition, the rust prevention cap can be attached to the disc wheel with the divided pieces closed. For this reason, it is possible to more reliably block water droplets, damp air, or air containing salt that enter from the through hole of the disk wheel.
[0014]
Further, the cap body can be mounted in a groove (for example, a wheel cap mounting groove) formed on the inner peripheral surface of the rim portion of the disc wheel. For this reason, while being able to attach a rust prevention cap to a disc wheel easily, it can install reliably so that a rust prevention cap may not fall off easily.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a disc brake device 10 and a wheel 20 assembled to an axle hub B fixed to an axle A of a vehicle, and a rust prevention cap 30 mounted on the vehicle outer side of the wheel 20. .
[0016]
The disc brake device 10 includes a disc rotor 11 disposed outside the axle hub B, and a dust cover 12 that covers the inner surface of the disc rotor 11. The disk rotor 11 includes a bottomed cylindrical mounting portion 11a disposed in contact with the axle hub B, and a flange portion 11b extending radially outward from the outer peripheral portion of the mounting portion 11a. The dust cover 12 is formed in a substantially disk shape, and is disposed on the inner side of the vehicle with respect to the disk rotor 11. And it prevents that the water, mud, etc. which jumped up when the vehicle drive | worked adhere to the vehicle inner surface of the flange part 11b.
[0017]
The wheel 20 includes a steel disc wheel 21 disposed on the vehicle outer side of the disc rotor 11 of the disc brake device 10 and a tire 22 attached thereto. The disc wheel 21 has a disc portion 21a and a rim portion 21b. The disk portion 21a is disposed in contact with the mounting portion 11a of the disk rotor 11, and is fastened together with the hub bolt B1 and the hub nut B2 together with the mounting portion 11a of the disk rotor 11 to be fixed to the axle hub B. The rim portion 21 b is cylindrical and is integrally fixed to the disc portion 21 a to support the tire 22.
[0018]
As shown in FIG. 2, the disc wheel 21 has a through hole 21c, an air injection valve 21d, and a groove 21e. A plurality of through holes 21c are formed in the disk portion 21a to conduct the outside air and cool the disk brake device 10. The air injection valve 21 d is assembled at a predetermined position of the rim portion 21 b and injects air into the tire 22. The groove portion 21e is a groove for assembling a wheel cap (not shown), and is formed on the inner peripheral surface of the rim portion 21b.
[0019]
The rust prevention cap 30 includes a cap main body 31 that covers the entire disk portion 21 a of the disc wheel 21, and a handle 32 that is a detachment portion for removing the attached rust prevention cap 30.
[0020]
As shown in FIGS. 1 and 3, the cap main body 31 is formed in a bottomed conical shape and opens in the in-vehicle direction. In addition, a plurality of engaging portions 31a as small protrusions are provided on the outer periphery of the cap main body portion 31 on the opening end portion side, and the outer peripheral portion of the cap main body portion 31 has a polygonal shape (regular 24 square). The engaging portion 31a is formed so as to be inscribed in a circle that is slightly smaller than the outer diameter of the groove portion 21e formed in the rim portion 21b and slightly larger than the inner diameter of the groove portion 21e. Has been. And the engaging part 31a formed in the cap main-body part 31 and the groove part 21e formed in the rim | limb part 21b fit each other so that engagement / disengagement is possible, and the cap main-body part 31 is mounted | worn so that attachment or detachment is possible. .
[0021]
The handle 32 is integrally formed with the cap main body 31 in a rectangular shape, and extends outward from the outer peripheral surface of the cap main body 31 by a predetermined amount in the radial direction. A long hole 32 a is formed in the substantially central portion of the handle 32 to allow the air injection valve 21 d assembled to the rim portion 21 b of the disc wheel 21 to pass therethrough. In addition, the whole rust prevention cap 30 is shape | molded from paper materials (for example, an old newspaper, corrugated paper) using the well-known WFM (wet fiber mold) manufacturing method.
[0022]
The rust prevention cap 30 configured as described above is attached to each wheel 20 after the vehicle is assembled. That is, as shown in FIG. 4, the rust prevention cap 30 is fitted to the rim portion 21b from the outside of the vehicle with the engaging portion 31a and the groove portion 21e fitted. At this time, since the engaging portion 31a is a regular 24-vertex vertex, discontinuous contact (point contact) is made in which the rim portion 21b of the disc wheel 21 and the regular 24-vertex vertex contact each other. Thereby, the frictional force due to the contact between the engaging portion 31a and the rim portion 21b is reduced, and the rust prevention cap 30 can be attached with an extremely small force. Further, the rust prevention cap 30 is mounted so that the air injection valve 21 d is inserted into the elongated hole 32 a of the handle 32. Thereby, since the air injection valve 21d protrudes through the long hole 32a, the engaging portion 31a engages with the groove portion 21e over the entire circumference. The vehicle is stored or transported with the rust prevention cap 30 attached to each wheel 20.
[0023]
Thus, in the state where the antirust cap 30 is attached to the disc wheel 21 of the wheel 20, the cap main body portion 31 can cover the entire surface of the disc portion 21a. This prevents water droplets, moist air, or air containing salt from passing through the through hole 21c. Accordingly, water droplets, moist air, or air containing salt is not brought into contact with the surface of the disk rotor 11 outside the vehicle, so that the surface is prevented from being rusted. Further, since the cap main body 31 covers the entire surface of the disk portion 21a, the occurrence of rust on the disk portion 21a can be prevented by water droplets, moist air, or air containing salt. Furthermore, by engaging the engaging portion 31a with the groove portion 21e, the antirust cap can be prevented from falling off due to, for example, movement of the vehicle, and can be securely attached.
[0024]
Moreover, when the vehicle equipped with the rust prevention cap 30 is sold, the rust prevention cap 30 is removed. Here, when the rust prevention cap 30 is attached to the disc wheel 21, the handle 32 and the rim portion 21b come into contact with each other, and the handle 32 extends outward from the vehicle. For this reason, for example, the operator of the store can remove the rust prevention cap 30 by pulling the handle 32 extending in the vehicle outer direction in the vehicle outer direction. At this time, since the engaging portion 31a is a regular 24-vertex vertex, discontinuous contact (point contact) is made in which the rim portion 21b of the disc wheel 21 and the regular 24-vertex vertex contact each other. Thereby, the frictional force due to the contact between the engaging portion 31a and the rim portion 21b is reduced, and the rust prevention cap 30 can be removed with an extremely small force. Therefore, in order to remove the rust prevention cap 30, the rust prevention cap 30 can be removed very easily without largely cutting the wheel 20 left and right or jacking up the vehicle. Moreover, since the rust prevention cap 30 is not destroyed when the rust prevention cap 30 is removed, the rust prevention cap 30 can be used again.
[0025]
In the above embodiment, the rust prevention cap 30 is provided with the handle 32, and the operator pulls the handle 32 outward from the vehicle, so that the rust prevention cap 30 is removed from the disc wheel 21. Instead, as shown in FIG. 5, the slit 33 is formed in the cap main body 31 to form four divided pieces 33 a, and the operator uses the slit 33 to prevent the rust prevention cap 30. You may carry out so that may be removed. Hereinafter, this modification will be described.
[0026]
The slit 33 is formed in a cross shape at a substantially central portion of the cap body 31. When the rust prevention cap 30 is attached to the wheel 20, the divided piece 33a is in a closed state. This prevents water droplets, moist air, or air containing salt from passing through the through hole 21c. Accordingly, water droplets, moist air, or air containing salt is not brought into contact with the surface of the disk rotor 11 outside the vehicle, so that the surface is prevented from being rusted.
[0027]
Further, when the rust prevention cap 30 is removed from the wheel 20, the operator uses the slit 33 to remove the rust prevention cap 30. That is, the worker inserts a finger from the outside of the vehicle by tilting the divided piece 33a in the vehicle interior direction. The operator inserts a finger, puts the finger on the rust prevention cap 30 and pulls it in the vehicle outward direction. Thereby, the antirust cap 30 is easily removed from the wheel 20. And when using again the rust prevention cap 30 removed in this way, the division | segmentation piece 33a is used so that opening may be closed.
[0028]
Thus, in this modified example, in addition to the effect of the effect similar to the said embodiment, the antirust cap 30 can be formed compactly.
[0029]
Moreover, in the said embodiment and modification, although the antirust cap 30 was shape | molded and implemented from the paper fiber using the WFM manufacturing method, it replaced with this and has resin (for example, polypropylene, polyamide) which has flexibility. , Polystyrene, PET, etc.). That is, the rust prevention cap 30 is formed by injection molding a flexible resin into a mold. Since the rust prevention cap 30 molded in this way has flexibility, the engaging portion 31a and the rim portion 21b can be fitted very easily. Thereby, the operator can attach and detach the rust prevention cap 30 to and from the disc wheel 21 with an extremely small force. Thus, also in this modification, the same effect as the above-described embodiment can be obtained.
[0030]
Furthermore, in the said embodiment and modification, although the antirust cap 30 was mounted | worn with the steel disc wheel 21, you may implement with the antirust cap 30 mounted on the aluminum disc wheel. In this case, the engagement portion 31a of the rust prevention cap 30 is formed so as to be engageable with, for example, a mounting groove portion of an ornament (decoration) attached to a substantially central portion of the disc wheel or a cooling through hole of the disc brake device. . Even in this case, the same effect as the above embodiment can be obtained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a vicinity of a wheel showing a mounting state of a rust prevention cap according to the present embodiment.
FIG. 2 is a front view for explaining a disc wheel constituting a wheel.
FIG. 3 is a front view showing in detail the structure of the rust prevention cap shown in FIG. 1;
FIG. 4 is a diagram for explaining an engagement state between a rim portion of a disc wheel and a rust prevention cap.
FIG. 5 is a front view showing in detail the structure of a rust prevention cap according to a modification of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Disc brake apparatus, 11 ... Disc rotor, 12 ... Dust cover, 20 ... Wheel, 21 ... Disc wheel, 21a ... Disc part, 21b ... Rim part, 22 ... Tire, 30 ... Rust prevention cap, 31 ... Cap main-body part , 31a ... engaging portion, 32 ... handle, 32a ... long hole, 33 ... slit, 33a ... divided piece.

Claims (7)

It is detachable from the outside of the disc wheel constituting the wheel, and has a cap body portion that closes a through hole provided in the disc portion of the disc wheel when mounted,
A rust preventive cap for preventing rust generated in a disc rotor of a disc brake device disposed in a rim portion of the disc wheel. The cap body portion is
The rust-proof cap according to claim 1, wherein the rust-proof cap covers the entire disk portion of the disk wheel when mounted. The rust prevention cap according to claim 1 or 2, wherein a plurality of small protrusions are provided on an outer peripheral portion of the cap main body, and each small protrusion can be engaged with and disengaged from the rim. In the cap body,
The handle according to any one of claims 1 to 3, further comprising a handle that extends outward from the vehicle when the cap body is mounted on the disc wheel. Anti-rust cap. To the handle,
5. The rust prevention cap according to claim 4, wherein a long hole through which an air injection valve disposed in the rim portion can be inserted is formed. In the cap body,
The rust prevention cap according to any one of claims 1 to 3, wherein a slit is provided to form a deformable divided piece. 7. The cap body according to claim 1, wherein the cap main body is detachably mounted in an annular groove formed on the inner peripheral surface of the rim portion of the disc wheel. 8. Anti-rust cap.

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