JPH068837U - Anti-vibration structure for anti-vibration rubber for railway vehicles - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A rubber coating part is provided for the anti-vibration rubber composed of rubber and metal fittings, and the bottom edge of each rubber layer separated by metal is Continuous integration with the rubber coating prevents the rubber from peeling. [Structure] A plurality of dot-shaped stands 12 on the lower end surface of the intermediate wheel
A rubber coating portion extending from the lower end of each rubber layer between the tip of the stand and the lower end surface of the intermediate wheel to cover the lower end surface of the intermediate wheel, and a notch on the inner and outer surfaces of the lower end of the intermediate wheel. The peripheral edge portions 9 and 10 are provided to secure the rubber wall thickness at which the adhesive strength of the rubber at the lower end edge of the rubber layer is sufficiently obtained, and the lower end edges of the rubber layers adjacent to each other separated by the intermediate ring are provided at the rubber coating portion. Continuously integrate on both sides of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vibration-proof rubber used as a shaft spring of a railroad vehicle, particularly a vibration-proof rubber composed of rubber and metal fittings, in which the lower end of each rubber layer separated by the metal fittings is extended to cover the lower end surface of the metal fitting. The present invention relates to a rubber separation preventing structure for a vibration isolating rubber for railway vehicles, in which the covering part is formed continuously and integrally so as to prevent the rubber from separating.

[0002]

[Prior art]

 In a railroad vehicle, as shown in FIG. 5, a plurality of intermediate wheels (c) made of metal are provided between the shaft (a) and the outer ring (b) as a shaft spring for supporting the axle box in a vibration-proof manner. (D) and a plurality of annular rubber layers (e), (f), and (g) that are rubber elastic bodies are alternately installed, and these rubber layers (e), (f), and (g) are An anti-vibration rubber (h) is provided which is vulcanized and adhered to a), an intermediate wheel (c), (d) and an outer wheel (b).

[0003]

[Problems to be solved by the device]

 However, in this type of conventional anti-vibration rubber, the rubber layers are individually provided in the respective layers separated by the intermediate ring, and the lower end surface of the intermediate ring is partially exposed. Water may invade from this exposed area and cause rust, which may seriously affect the adhesive strength between rubber and metal. In particular, the lower end of the intermediate wheel is the place where the stress that receives the most vibration in the front, rear, left, and right horizontal directions is concentrated, and is also the place where the rubber peels easily.Therefore, when rust occurs, the peeling becomes even easier. There were drawbacks such as.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to cover the lower end surface of the intermediate wheel with a rubber coating portion and the lower end of the rubber layer. The rubber wall is thick enough to obtain a strong bond and is continuously integrated with the rubber coating to prevent rusting due to metal exposure and to prevent the rubber at the point where stress is concentrated. The purpose is to provide a vibration-proof rubber that strongly protects against peeling.

[0005]

[Means for solving the problem]

 In order to achieve the above-mentioned object, the rubber peel-off prevention structure of the anti-vibration rubber for railway vehicles according to the present invention comprises a plurality of intermediate wheels and rubber layers alternately provided between the shaft and the outer wheel for vulcanization adhesion. In the anti-vibration rubber, a plurality of dot-shaped stands are projected on the lower end surface of the intermediate wheel at predetermined intervals, and cutout peripheral portions are provided on the inner and outer surfaces of the lower end of the intermediate wheel, and the lower end edge of the rubber layer is formed. Is provided with a rubber wall thickness capable of obtaining a predetermined adhesive strength at the cutout peripheral portion, and a rubber coating portion for covering the lower end surface of the intermediate wheel is continuously formed and integrally formed.

[0006]

[Action]

 When the intermediate wheel is set in the vibration-proof rubber molding die, a rubber stand is formed between the lower end surface of the intermediate wheel and the mold by the dotted stand protruding from the lower end surface of the intermediate wheel. A rubber coating portion extending from the lower end of the rubber layer is formed in the passage, and the lower end surface of the intermediate wheel covered by the rubber coating portion eliminates the occurrence of rust due to the exposed metal.

The rubber coating portion is formed by continuously integrating the lower end edges of the rubber layers adjacent to each other separated by the intermediate wheel from both sides, and is provided on the inner and outer surfaces of the lower end of the intermediate wheel. The notched peripheral portion secures a rubber wall thickness at which the adhesive strength at the lower edge of the rubber layer is sufficiently obtained to strengthen continuous integration with the rubber covered portion, and Eliminate peeling.

Further, the notched peripheral edge portion is adhered in a state of being sandwiched by the lower end edges on both sides of the rubber layers on both sides which are continuously integrated with the rubber coating portion, and the stress of the vibration isolating rubber is most concentrated. It is possible to secure the adhesive strength of the rubber layer at the location.

[0009]

【Example】

 An embodiment will be described with reference to the drawings. FIG. 1 is a front view showing a half of a vibration isolating rubber 1 of the present invention in cross section, and a plurality of intermediate wheels 4, 5 between a shaft 2 and an outer ring 3. And rubber layers 6, 7 and 8 are alternately provided, and notch peripheral portions 9 and 10 are formed on the inner and outer surfaces of the lower ends of the intermediate wheels 4 and 5 as shown in an enlarged view in FIGS. As shown in FIGS. 2 and 4, a plurality of dot-shaped stands 12 are provided on the lower end surface 11 of each of the intermediate wheels 4 and 5 at predetermined intervals so as to project from the intermediate wheels 4 and 5. , 5 are covered with a rubber coating 13 having a rubber wall thickness from the tip of the stand 12 to the lower end surface 11, and the inner and outer surfaces of the lower ends of the intermediate wheels 4 and 5 are As shown in FIG. 3 and FIG. 4, the rubber meat in which the lower end edges of the rubber layers 6 to 8 have a predetermined adhesive strength by the cutout peripheral portions 9 and 10. Is continuously integrated with the rubber covering part 1 3 is allowed with a covering lower end surfaces of the intermediate ring 4 and 5 are formed installed.

The dot-shaped stand 12 provided on the lower end faces 11 of the intermediate wheels 4 and 5 is set by the stand 12 when set in a mold (not shown) for molding the rubber layers 6 to 8. , 5 are provided to form a rubber passage between the lower end surface 11 and the molding die. The rubber passage extends to the intermediate wheels 4 and 5 from the lower ends of the rubber layers 6 to 8. The rubber coating 13 is formed. Therefore, as shown in FIG. 2, it is most preferable that the number of the stands 12 is provided at four positions which are the cross positions of the lower end surfaces 11 of the intermediate wheels 4 and 5.

The rubber coating portion 13 bridges the cutout peripheral portions 9 and 10 at the lower end edges of the rubber layers 6 and 7 or 7 and 8 on both sides which are continuously integrated on both sides of the rubber coating portion 13. It is vulcanized and bonded in a state of being sandwiched in a fixed shape, and it is possible to secure the adhesive strength of the rubber layer at the location where the stress of the vibration isolating rubber is most concentrated.

[0012]

[Effect of device]

 Since the present invention is configured as described above, the lower end surface of the intermediate wheel is covered with the rubber coating, and this rubber coating is continuously integrated with the lower ends of the rubber layers separated by the intermediate wheel. Since it completely covers the lower end surface of the intermediate wheel, it completely blocks the intrusion of water due to the exposed metal and eliminates the formation of rust. Further, the lower end portion of each rubber layer is formed to have a rubber wall thickness sufficient to obtain the adhesive strength of rubber, and it can be continuously formed on both sides of the rubber covered portion to obtain a strong integration. It is possible to secure a strong adhesive strength to the rubber layer at the location where the most vibrating rubber vibrating stress is concentrated, and to completely eliminate the peeling of the rubber layer at the lower end of the intermediate ring. There are advantages such as improving the quality as a shaft spring.

[Brief description of drawings]

FIG. 1 is a front view showing a cross section of a half body of an anti-vibration rubber according to the present invention.

FIG. 2 is a bottom view of the anti-vibration rubber according to the present invention.

FIG. 3 is an enlarged cross-sectional view of an essential part showing a state where a rubber coating is provided on the lower end of the intermediate wheel according to the present invention.

FIG. 4 is an enlarged sectional view of an essential part showing a state in which a dot stand is provided on a lower end surface of an intermediate wheel according to the present invention.

FIG. 5 is a front view showing a cross section of a conventional half body of a rubber cushion.

[Explanation of symbols]

 1 Anti-vibration rubber 2 Shaft 3 Outer ring 4,5 Intermediate ring 6,7,8 Rubber layer 9,10 Notch peripheral edge 11 Lower end surface 12 Stand 13 Rubber coating

Claims (1)

[Scope of utility model registration request] 1. An anti-vibration rubber comprising a plurality of intermediate wheels and a rubber layer alternately provided between a shaft and an outer wheel and vulcanized and bonded,
A plurality of dot-shaped stands are projected on the lower end surface of the intermediate wheel at predetermined intervals, a notched peripheral edge portion is provided on the inner and outer surfaces of the lower end of the intermediate wheel, and a lower end edge of the rubber layer is formed at the notched peripheral edge portion. A rubber peeling prevention structure for anti-vibration rubber for railway vehicles, characterized in that a rubber wall thickness capable of obtaining a predetermined adhesive strength is provided, and a rubber coating portion covering the lower end surface of the intermediate wheel is continuously formed integrally. .