JPH08270835A - Vehicular type valve cover - Google Patents

Abstract

PURPOSE: To provide a vehicular tyre valve cover with easy machining for preventing the damage and fall off of a valve cap and raising a wheel design property. CONSTITUTION: In a tyre valve cover mounted to a tyre valve consisting of the valve stem and valve cap of a wheel for automobile, plural engaging project parts 2 engaging with the opening end part of the valve cap are provided on the lower part of the upper half inner periphery surface of the type valve cover 1 formed in a cylindrical shape with a bottom so as to cover one part of the valve stem and the valve cap and plural turning stops 4 for fitting the groove on the roulette surface of the valve cap are provided on the upper part of the upper half inner periphery surface of the tyre valve cover.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle tire valve cover to be mounted on a tire valve comprising a vehicle wheel valve stem and a valve cap.

[0002]

2. Description of the Related Art Generally, in a tire valve for an automobile wheel, a valve cap is screwed to a threaded end portion of the valve stem in order to prevent air leakage from the valve stem. As shown in FIG. 4, this tire valve has a thread formed on the inner peripheral surface of the valve cap that covers the threaded portion of the valve stem so as to match the thread of the valve stem. , Rubber packing is provided. The outer peripheral surface of the valve cap is knurled or grooved.

Since the valve caps of the above-mentioned tire valves are mainly made of black synthetic resin and are poor in design, various decorative valve caps have been provided. This type of valve cap uses brass or the like as its material, is formed in the same internal structure as the above valve cap, and is coated with various bright colors or plated on the surface. Further, the top of the bulb cap is filled with crystal glass or the like as needed.

[0004]

The above-mentioned synthetic resin valve cap is sometimes broken and is poor in design. Further, although the decorative valve cap itself has a high design property, when the appearance of the entire wheel is taken into consideration, the rubber portion of the valve stem is exposed, which gives a feeling of strangeness in appearance. Further, since the valve cap is required to have an effect of preventing air leakage, it is necessary to process threads and packing inside the valve cap, which requires complicated processing and high quality.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a tire valve cover for a vehicle, which prevents damage and dropout of the valve cap, is easy to process, and enhances the design of the wheel. .

[0006]

In order to achieve the above object, a vehicle tire valve cover of the present invention is a valve cover mounted on a tire valve comprising a valve stem and a valve cap of an automobile wheel. A plurality of engaging protrusions that engage with the open end of the valve cap are provided at the lower part of the upper half inner peripheral surface of the valve cover formed in a bottomed cylindrical shape so as to cover a part of the stem and the valve cap, and A plurality of anti-rotation portions that fit into the groove portions of the knurled surface of the valve cap are provided on the upper inner peripheral surface of the valve cover. When the inner peripheral surface of the upper half of the tire valve cover is a press-fitting surface that is in pressure contact with the outer peripheral surface of the valve cap, it can be firmly fixed. Further, the lower end surface of the engaging convex portion is a tapered or spherical guide surface, so that it can be smoothly mounted.

[0007]

When the vehicle tire valve cover having the above structure is used, when it is pushed in from above the valve cap, the groove portion of the knurled surface formed on the outer peripheral surface of the valve cap is
The anti-rotation part is fitted, and the engaging convex part smoothly crosses over the side surface of the valve cap by the guide surface on the opening side,
Engages with the open end of the valve cap. After mounting, the locking surface of the engaging protrusion engages with the opening end of the valve cap, and the stop surface provided at the top of the inner surface of the valve cover closing part collides with the closing end of the valve cap. , The valve cover is integrated with the valve cap,
By rotating the valve cover, the internal valve cap also rotates, so that it can be attached to and detached from the valve stem.

[0008]

Embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the accompanying drawings. 1 is a partially cutaway front view of a tire valve cover according to an embodiment of the present invention, FIG. 2A is a sectional view taken along line XX of FIG.
(B) is a sectional view taken along the line YY of FIG. 1, and FIG. 3 shows a usage state of the vehicle tire valve cover of the present invention.

In the figure, 1 is a tire valve cover,
It is a bottomed tubular shape made of synthetic resin, metal or the like so as to cover a part of the valve stem B and the valve cap C. A plurality of engaging protrusions 2 that engage with the open ends of the valve cap C are provided on the lower portion of the inner peripheral surface of the upper half of the tire valve cover 1. In addition, between the top of the inner surface of the closed portion of the tire valve cover 1 and the engaging convex portion 2, a press fit surface 3 with a certain tightening margin is formed with the valve cap C, and in the upper half of the tire valve cover. A plurality of anti-rotation parts 4 that fit into the groove parts 11 of the knurled surface of the valve cap C are formed on the upper part of the peripheral surface. In the tire valve cover 1 configured as described above, the top of the inner surface of the closed portion is a stop surface in contact with the top of the valve cap C, and the upper surface of the engaging protrusion 2 engages with the opening end 10 of the valve cap C. The side surfaces and the lower surface of the engaging convex portion 2 are guide surfaces formed by a tapered surface or a spherical surface so as to get over the valve cap.

Next, the mounting of the tire valve cover having the above structure on the tire valve will be described. When the tire valve cap 1 is pushed in from above the valve cap C, the groove portion 1 on the knurled surface formed on the side surface of the valve cap C.
The rotation stopping portion 4 is fitted to 1, and the engagement convex portion 2 rides over the side surface of the valve cap C by the guide surface of the engagement convex portion 2 and is engaged with the open end portion of the valve cap to ensure the engagement. Installing. After the mounting, the engaging surface formed on the closed side of the engaging projection 2 engages with the open end of the valve cap, and at this time, the stop surface provided on the top of the inner surface of the closed portion of the valve cover is the valve. While colliding with the cap, between the top of the inner surface of the valve cover body and the mounting piece, the valve cap and the press-fitting surface with a certain tightening margin hold the valve cap.

[0011]

According to the present invention, the valve cap and the press-fitting surface having a certain tightening margin, the stop surface provided on the top of the inner surface of the closing portion of the valve cover, and the engaging member formed on the closing portion side of the mounting piece. Since the valve cap is gripped by the effect of the anti-rotation piece having the fitting surface that fits in the groove portion of the knurled surface of the valve cap, the valve cap can be securely attached to the valve cap and integrated handling is possible. Also, it can be used as it is for valve caps of conventional tire valves, and it does not require a structure for preventing air leakage unlike conventional decoration valve caps, so it is not only easy to process, but also for automobiles. Since the decorativeness of the wheel can be enhanced and the valve cap can be protected, it is possible to prevent the valve cap from being damaged or falling off.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a tire valve cover according to an embodiment of the present invention.

2A is a sectional view taken along line XX of FIG. 1, and FIG. 2B is FIG.
3 is a sectional view taken along line YY of FIG.

FIG. 3 shows a use state of the vehicle tire valve cover of the present invention.

FIG. 4 is a front view of a conventional tire valve.

[Explanation of symbols]

 1: Tire valve cover 2: Engagement convex portion 3: Press-fitting surface 4: Non-rotating portion 10: Open end portion 11: Groove portion B: Valve stem C: Valve cap

Claims (3)

[Claims] 1. A tire valve cover to be mounted on a tire valve comprising a valve stem of an automobile wheel and a valve cap, the tire valve having a bottomed tubular shape so as to cover a part of the valve stem and the valve cap. A plurality of engaging protrusions that engage with the opening end of the valve cap are provided on the lower part of the inner surface of the upper half of the cover, and a knurled surface of the valve cap is provided on the upper part of the inner surface of the upper half of the tire valve cover. A vehicle tire valve cover, characterized in that a plurality of anti-rotation portions that fit into the grooves are provided. 2. The tire valve cover for a vehicle according to claim 1, wherein the inner peripheral surface of the upper half of the valve cover is a press-fitting surface that is in pressure contact with the outer peripheral surface of the valve cap. 3. The vehicle tire valve cover according to claim 1, wherein a guide surface is formed on a lower end surface of the engaging convex portion.