JPS5948207A - Reinforcing body for tire bead - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to surface shape 9,! The present invention relates to a tire bead reinforcing rod extending circumferentially and a method for manufacturing the tire bead reinforcing rod.

The tire bead is reinforced by a hoop made of non-stretchable material, and the hoop made of non-stretchable material must satisfy a number of conditions, including:

First, the hoop must have a high tensile strength to overcome the pressure effects in the elastomer between the bead reinforcement and the bead seat on the rim of the wheel. This action provides the JIA stand 1c sealing 1' of the tubeless tire, and also connects the tire and wheel rim in order to transmit driving force, ili'J power, and steering force in the tire VC. It provides a gripping action during the gap. 1, the hoop can withstand the tensile force exerted on the hoop by the tension body of the tire carcass due to the desired air pressure inside the tire.7.1: If 7.
1 r) No. The sixth tensile strength requirement for the hoop is the tire component parts, especially the trend and breaker body parts.
To withstand centrifugal force generated from jit ti-C,
In the case of high-speed car C#, this centrifugal force is the same as the force due to the pressure inside the tires.

, M42 K, the bead reinforcement has one or more carcass plies A-bead rftl'y! I5J can be wound around a single winder and moored at the bead without the risk of damaging the mooring action of the ply at the bead or fraying the ply. A cross section that makes you feel like you're in trouble.
Must be. In conventional practice, this means that the ply is not even around the bead hoop.
(jj <As shown in the picture, the bead hoop is made of 5 elastomer, its shape is shaped like a bead component, or a triangular "apex, 1-i" shape is used for Au). This was achieved by determining the shape of the bead part. In such an apex body, the 1st part of one long sword is placed adjacent to the bolt body hoop, and both the ultl MB of the long sword are placed radially in the tire side wall circle. Positioned with the rod protruding 1 - 10 degrees (
After the finely granulated plies are loaded around the bead hoop, they are placed parallel to it or themselves on the table 7. C9
The LIi was returned to the poor, and the parallel was 1. 7. So that the c-rested point - C is provided with a terminal thread fastening part. I'm in C. This has been done to avoid stress in one or more carcass plies on the samurai which could cause damage to the carcass.

A further requirement for bead heel bodies is that in many cases the bead reinforcement must withstand the rigors of the tire's steel layer and removal, where the small area of the bead is subjected to high loads. It must not happen. A typical example is the use of a tire lever 7 to remove a tire from a wheel rim.

It should be recognized from the foregoing that the circumferential bundling for the tire bead performs many functions.

Traditionally, tire beads are reinforced with bundles of steel wire. Depending on the design, the steel wire may be shaped into a spiral composite, such as four turns of four juxtaposed steel wires to provide a 4x4 bead structure. It is clear that the number of juxtaposed wires other than 4, or the number of turns other than 4, will make it possible to obtain bead reinforcing groove remains of various types of ponds. It's tight.

The strip of four, five, or any other number of wires arranged next to each other is rubberized so that the assembled bead hoop is confined within the rubber;
Also, during curing, the wire, which may be plated, is attached to the hoop 1/1-e.

In the case of tires with base/11 tires, the required compression force under the bead and the required bead characteristics depend on the shape and angle of the heat/heat on the wheel rim. Accordingly, the wires are arranged with cross-sectional shapes other than rectangular.

In another known bead 111 construction, the steel wire is self-braided into the shape of the cable.

These known structures are limited in the selection of the shape of the bead, and also have the problem that it is difficult to maintain the shape of the bead in the subsequent steps of tire manufacturing. I'm doing 1.

The object of the present invention is to solve the above-mentioned problems.

According to the invention, it has a cylindrical hoop, said one caustic fuso being shaped by a band of violet fittings extending in the circumferential direction of said hoop) J! j, has been, and made by the elephant 7
- The band formed by the cylindrical hoop is formed such that the sheet made of paper cuts the outer periphery of the cylindrical hoop, and one edge of the band rests on the cylindrical hoop. A tire bead reinforcement is obtained which is shaped in a direction perpendicular to the central arm of the tire.

Preferably, the above-mentioned forming is carried out by forming two or more thick parts of the metallurgical notebook by means of a composite shaped sheet of gold, with the claw or resting edge of the band located on the outside. The cylindrical hoop is made like 11To.

The claws or opposing edges of the band may be bound to the cylindrical hoop, for example by welding, but preferably the width of the sash sheet is not so bound.

The preferred surface of the cylindrical hoop is circular, but a rectangular cross section or another vr surface shape with a flattened circular surface within the radius of the hoop may be used.

The cylindrical hoop may have a cross-sectional shape that varies in its longitudinal direction, allowing the characteristics of tire bead bending strength to be varied over a wide range. 9, the elongation properties and/or properties of the cylindrical hoop can be determined, for example, by a group of annular grooves 14 or one annular groove formed along the outer wall of the cylindrical hoop. +f
The limits to which the Jr surface is varied can be varied or widened depending on the area of the IL or the area of growth. The beam may extend around the front surface of the planar hoop, or it may extend only over a portion of the circumference of the cylindrical hoop. 1 nano"The change in the song may consist of one or more spiral grooves. If two or more spiral grooves are used, they (+'/ may be r!A relative to each other or , or may be connected to each other at a given point.

The I (Ir17I) next to each other is the +
The i4J length can be changed according to the tube properties required for the bead sleeve and heel body. Adjacent portions of the tubular tool 70 may be joined together, for example by bath welding, to provide additional strength as required for a particular bead.

The material is made of poor metal and may also be plated for non-ferrous leathers such as brass to promote adhesion to elastomeric materials used in tire construction. However, other materials such as brass may also be used. Plating is 1 [forming a ■-shaped hoop 1]
111 or later.

The band may be formed with an elastomer tire component at the time of forming the band, preferably with a notebook made of AIA, but the wrapped sheet layer made of f-no-man is only as much as the elastomer. separated from each other 1)J
It is also possible to protect the molded parts with an elastomer material so that the elastomer joins them together in the LI 114e tire bead.
This is the i-th one. When applying an elastomer to a planar hoop after it has been formed, instead of using a thin coating, the elastomer can be formed and placed next to the apex band, beat dowel or beat sleeve, or side body as needed. Other elastomeric parts may also be provided. Such an assembly may be partially or optically hardened into the tire, or may be used as a terminal compound.

The good cold phenop of the metallic/-metal metal bead against the Jjυ car tire bead is,
A two-layered notebook is used on the wall of the cylindrical hoop *@
Bands made of t'', i6゜-i members in the range of 0.6 to U, 7, m are cut from an A1 1'' L tube, or are continuous by rolling a tube without a joint Ll. The bread 1ζ or C may also be formed from a band-shaped body made of notebook material by joining and cutting the ends of the band-shaped body.

Alternatively, the metal 7-tooth surface is flat 1. It may also have an annular shape stamped from a sheet of steel. You may also use the junction of the head of the head,
Preferably 7, the joint should be straight. It is also a piece that is abutment and abutment of the cut end and end, or a piece that is a patchwork of the 48 part and the end that are cut at an angle. Good too.

This type of tire bead draw can be applied to all known tires, including car and truck tires that use zero bead turns.

According to the present invention, there is a method for producing a drawn body for a tire bee of the above-mentioned type, in which a circular endless band made of a metal sheet is wound around a cylindrical section ring, and one edge of the band is wound. A manufacturing method is obtained in which the planar cross-section ring is fitted with claws.

Preferably the winding operation is carried out in one or more winding stages 4-0, although each winding stage may be carried out hot or cold.
Q-room is preferred.

In the winding operation 4, the circular band is inserted into the chuck, one line part of the band is tightened into the chuck, and then the other edge is gradually formed into a tube using a continuous spatula drawing operation. It is carried out by cutting out 1”L (:
? Ru. The band is then removed from the chuck, and the band is rotated between a pair of forming enveloping rolls to complete forming 1, placing the outer edge of the band in a snug relationship with the tube, thereby completing the tube. 〇circular k) (the end band is 1
・[It may be done or better/ls I'H's Makime Prefecture (One field of rings consisting of tubes (JJ Rimurat)
L L, that ring must finally be 777. c Width and diameter may be marked by cold rolling 1-2' or 'hl'4'! j: 'It may be made by cutting a piece of wood into a length, rolling it into a ring, and sewing the ends 13 and 81S of the ring together. The joining can be carried out by joining the yifi! part and the end of the obi cover to the protrusion -+!: and then applying a].

According to the present invention, there is further provided a vehicle tire having a bead which is strengthened by the above-mentioned turn.

The following is an abbreviated drawing of the laboratory.
Read about examples.

The tubular tire bead shown in FIG. 7 is curved and still makes two tensioned copper notes, turns 1 and 2-c7. The roll LJI] has an inclusion body. One side of the notebook 3 is located inside the scroll body, and the edge 4 of the notebook rests on the tube formed by the steel roll body. The body extends over the entire circle, forming a hoop (ring-shaped body), and around the hoop the same circular +!fr+drinkage is held, creating a complete bead in the shape of an emperor. The reinforcing hoop is typically O-17 in the case of a t"l vehicle tire.
It is molded from 11n thick brass-plated commercial car JJII sheet and has a diameter of 350 mm.
, giving a finished bead hoop with a diameter of 11 mm.

Preferably, the tubes produced are padded with uncured rubber to provide a bead assembly suitable for use in conventional tire manufacturing processes.

The beads are made of FT4 material that is efficiently formed and has a cross-sectional shape v' that is not disturbed during tire manufacturing or vulcanization.

Another IL; f-shaped bead to f Y
It can also be made, one example of which is shown in FIG. The Bee Pi seat part 5 is being abused. The bead is a pre-formed apetutus made of rubber, and the apetutus is 1♂-shaped. One ff-shaped piece 6 is attached to a beadge tire manufacturing machine.
Attach it to the tube at the correct position 11', 1'' before removing it.

Basic street fighting 11. 14'; I using ftj field
I! It is possible to make many 1-dimensional shapes of J, and by changing the number of turns in the forced body, some bead dimensions and bead lj! Ii I & things Y
It is possible to use steel material of the same thickness for =+J.

Additionally, as shown in FIG. 9, short cross-sections 21 and 22 can be formed into the tube to provide a bead hoop anchoring feature.

The first deformation zone 21 has an annular groove shaped in the outer circumference of the cylindrical bead. This first transformation ward, Makoto 21
provides a short section in the longitudinal direction of the tube that is more stretchable. In addition, the annular groove can be used without reducing the breaking strength or changing the proportional limit.
The hj-shaped bead also makes it more readable when bent. Around the bead hoop, there are several deformed areas that are set within the edges of each other.
Also, the size of the bamboo and the number of grooves can be varied to provide the desired elasticity for the bead hoop.

The second deformation area 22 has another 1jq configuration in which a group of four necks 23 are used. The effect of this second deformation zone is the same as that of the first deformation zone, but h
Jj differs in the degree of nitrification.

You may use as many monuments as you like, and
The number of groove groups per bead hoop has been determined! It can also be changed depending on the character.

Two other single-face variations are marked in Figure 61310. In Fig. 10, the one on the left 11+11 is a Jd
These Jobushii Sae 24 and 25 visit each other once and for all, and offer deformation and purity areas of 26 yen. Figure 1o right +1
1jl has one short longitudinal groove 21
Using 16 and +'+ grooves 27, the longitudinal characteristics can be changed 1. c < Bending strength 1 Length IIJ - Possible change in edge quality 7.

Another pair of newspaper variants, IJ, are 7J" wide in the 11th section. In this FIG.
llJ has a pair of spiral grooves 2 wound in opposite directions.
9 and 30 are used. Kozai t et al groove is bead hoop 0
There may be a series of lengths around the length, or there may be a series of lengths spaced apart from each other.

7. The loose edges 4 are secured with nails as shown in Figure/F. In the case of a C-shaped cup, the edge 4 may be fitted or fitted to the tie.

FIGS. 1-6 illustrate the steps in constructing the bead hoop of FIG. 47.

First ft? 77, flat L steel "tfF, σξ1
The book is wound to form a circular band 1, and the end and 15M section butt +! :l 1+ joined by valley contact part 8
, fi un's continuous ring f'l m will serve you 5
It has become. Assume that the band 7 is iron layered on a chuck 91/i provided in a hollow drawing lathe, and the chuck is shown in FIG. 2.
hold. A pair of cooperating spatula drawing dies 11 and 12 defining a curved channel 13 therebetween are then placed onto the rotating chuck 9 and band 7 in the direction of arrow 14. direction to form the shape shown in FIG. When the spatula drawing stage of Ia 1 is completed, the spatula drawing dies 11 and 12 are made to fall into each other to form one thread with Band I.L-)J
'16 This first band 7 has a curved edge area 15.

A second spatula drawing operation using a second pair of dies 16 and 17 is illustrated in FIG. The circular cut 18 forms the mated shape 19 shown in FIG. 5 as the die 16,17 is moved towards the rotating chatter.

The band 1 is then removed from the chuck 9, and as shown in FIG. The rolls 20 and 21 have the finishing parts shown in Figure 437 and 1. This completes the winding of the 1 m bead lid.

Although different materials and thicknesses may be used for different types of beads, a separate forming process, i.e., Melier, may be used.

The bead is 1 tari other than circular.
May be included in the shape or /J in Figure A48
Iruka Tokuhei! It may be arranged in a nohi-like manner, with the most important areas being the best.

Obviously, the modified cross-sections of FIGS. 9, 10 and 11, for example, may be formed into a 1ilJ z or ridge forming tube, so as to provide 2'L bead tube flexibility when required. It has become.

The rubber breaks against the hoop (due to the stiffness after
This may be done by layering the sheet material, by dumping all of the +i'f material, or by rotating it in a two f'g T-head extrusion mill. In addition, other rubber sheath parts may be added to the heel, such as a special toe for the bead or an apex, especially when using a figure 7 head extrusion mode.

[Brief explanation of drawings]

Figure rA1 shows a sheet made of Al material for use in mounting a bead reinforcement hoop according to an example of uninvented results.
It is a perspective view of the t' iW band. il,
4 and 6 are partial front views of a molding machine used for molding bead hoops, and FIGS. Fig. 7A7 is a diagram showing the front side of the finished bead, and Fig. 8 shows another bead antibacterial method. Fig. 9 is a cross-sectional view showing a part of the tire bead, and Fig. 10 is a deformation diagram different from Fig. 9. FIG. 11 is a diagram showing the surface area, and FIG.
It is a figure which shows the modified 7m shape different from the figure. 1.2... Circumferential part, 3, 4... Edge, 5... Bead layer seat part, 6... A(Tuxus diademoid body, l... Circular band, 8... Welding part, 9...Chuck, 1υ...
・Band edge, 11.12... Spatula drawing die, 1
3... Channel or groove, 14... Arrow, 15...
・T! 16.11...
Evening chair, 18...circular S2e'rs 19...
Drinking force, it shape, 21.22... deformation 1; l + surface area, 23°24.25°
Degree area, 27... Profanity 28.29.30 ・・・ ・
1st layer''; Turn white? Agent Akira Asamura

Claims (1)

[Scope of Claims] (1) The tire bead is made into a reinforced body and controls a cylindrical hoop 0, and the cylindrical hoop is formed by a band made of a metal sheet extending in the circumferential direction of the hoop. The band formed of the thin metal sheet is such that the sheet forms the outer periphery of the front N-shaped cylindrical hoop, and the 11th edge of the band is sub-contact with the cylindrical hoop. 6L5 Tire bead reinforcement body formed in a direction perpendicular to VC. t21 (F!j,,f'l- In the tire bead reinforcing body according to claim 1, the above-mentioned forming is performed so that the 10,000th part of the band that fits into the planar hoop is The metal sheet of the rolled body is placed in the outer position 011 tt' (3) In the tire bead reinforcing body according to claim 2 of the Eleventh Office, one edge of the band stands above the base l of the band, and one edge of the band is covered with a bath. By contact ll1j letter fu 7
One tire bead f-mount is joined to 0. (4J % Scope of Claims 2nd Tumulus Q:, Clause 6, 11,
One side of the hoop is a circular tire bead reinforcement. (5)! A tire bead reinforcing body according to claim 2 or 46, wherein the front, cylindrical hoop has a rectangular cross section. (6) 'Surprised RF Claims Paragraph 2 or Section 6, Paragraph 11! Tire bead reinforcement [where m tjL Sheet θ-shaped hoop r)i + uj is a circle with a flat portion in the inner part of the radius of the hoop. (7) When the tire bee toy 111 according to any one of claims 1 to 6 to -C is 16, one own angle of the reinforcing hoop is the angle of the hoop. Elongation i'J Fit that changes along the stroke of the hand
: Tire bead reinforcement that imparts strength and/or flexibility. (8) In the tire bead tensioner according to claim 1, the change in the cross section of the cylindrical hoop is caused by a series of cylindrical hoops positioned around the cylindrical hoop. A tire bead reinforcement body with annular shapes sewn apart from each other. 1! Jl 71keN"F iH # seeking iiilα 8th
In the Yabido cuff body described in Item 8, each of the grooves is formed around the front hpi segmental hoop for -16 minutes.
Extending tire bead 11n heel'fu0 uol q'r ri+; r+v (7) ml)
Enclosure t, 4TJ7 JJJ = Tire bead reinforcement body vc: id, + t: I description cylindrical reinforcement...■ Change is at least one formed around the planar hoop! After 15', the tire bead f11 was replaced. 1″1tFfF ii+ff water range In the tire bead reinforcing body described in any one term Vc in the 1st term to 1U term box, 1lfJft self-image 7?The ivy net is a tire bead reinforcing rod made of steel. 〇497゛rev. 113 (range from paragraphs 2 to 11
In the tire bead reinforcing rod described in one item, the sheet made of elastomer is pre-laminated on the molding cut. VCd elastomeric material in which the wound layers are separated from each other by the amount of the elastomeric material and are attached to each other by the VCd elastomeric material. Li tllαllα paragraph 1 paragraph 4 of the patent claim! 12 songs 2
-c(・tire bead f+I described in one of the terms)
+ tension body
The mantle is a tire bead reinforcement rod that is an endless mantle. 01 Claim No. I Jukamo No. 12 Song E (
- (1) In the tire bead reinforcing body according to any one of the items, the l mantle formed by the thin metal cap is J-shaped into a lII hoop, and then the -C end and the end 7
Tire bead rlli to which 4B is attached
'j'ft 1 piece. (G) A bead-stretching tire reinforced by a tire bead tension member according to any one of claims 1 to 14.