JP4143696B2 - Core structure of run flat wheel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a core structure of a run flat wheel.
[0002]
[Prior art]
〔background〕
  In recent years, run-flat tires have been actively developed from the following two viewpoints.
(1) Omission of spare tire
★ Energy saving: Vehicle mass is reduced and fuel efficiency is improved. Manufacturing energy can be omitted.
★ Space saving: Spare tire mounting space can be used effectively.
★ Lower cost: spare tires, wheels, tools, jacks, etc. can be omitted.
(2) Ensuring passenger security
★ Do not get involved in crimes and accidents caused by road breakdowns and stops.
★ Necessary for VIP cars, emergency cars (patrol cars, ambulances), vehicles for the disabled.
★ Corresponding to an increase in drivers who cannot change tires.
[0003]
  Currently, there are two types of run-flat tires: A (core type, FIGS. 37 and 38) and B (sidewall reinforcing type, FIG. 39).
A. Core expression
In the core type, it is necessary to devise a method of loading the core 100, and there are various types such as a split type rim, a rim 101 with a pedestal (FIG. 37), an assembled type core, an atypical tire 102 and a rim 103 (FIG. 38). Although the type has been devised and tried,
★ Not compatible with conventional tires and rims.
★ There are many parts and the cost is high.
★ Because of the flat structure, the tire and rim mass is large.
★ It is difficult to attach or remove the tire or core from the wheel.
For the reasons mentioned above, it has not been popularized.
[0004]
B. Side wall reinforcement type
The side wall reinforced type is compatible with conventional tires and rims. More acceptable. There is know-how on how to reinforce the side wall 104, and various types have been devised. (Fig. 39) However,
★ If the tire flatness is high, run-flatness will not be established. (Tire flatness 45% or less)
★ Reinforced side walls make the vehicle's upper and lower springs harder, making it less comfortable to ride and noise.
★ By side wall reinforcement, front and rear shock absorption is poor and affects the strength of the car body.
★ The tire + wheel mass is large. (The increase by flat tires is large)
★ Side wall is not flexible, so it is difficult to attach to and remove from the wheel.
However, it has not yet spread.
[0005]
C. Horizontal loading wheel + core type
Therefore, the present applicant has devised and proposed a third method of loading a “slicing core” on a “side-loading wheel”. (Japanese Patent Application No. 2001-352191 --- refer to FIGS. 40 and 41)
The structure is a structure in which the core 105 is attached to the rim from the side while the cut 105 is made in the core 105 and the rim 107 is divided (the flange on one side is detachable from the rim body).
This way
☆ Fully compatible with conventional tires and wheels.
☆ The effect of the cut creates flexibility in the core and facilitates insertion into the tire, so high-flat tires (flat rate of 50% or more) can be used.
☆ The mass of tires and rims is almost the same as before.
And the problem of both A and B systems can be wiped out.
[0006]
[Problems to be solved by the invention]
  However, the structure proposed by C still has the following problems.
★ In the proposed structure, the core mass is heavy.
★ The core is bulky, and manufacturing and logistics costs are high. Also, it is difficult to insert into the tire.
★ It is difficult to secure the core. (Floating due to centrifugal force)
Etc. remained. (Details will be described later)
[0007]
  The above problem will be described in more detail.
(1) About the "mass of the core is heavy"
The mass of the run-flat system is the spare tire (tire + wheel))It is demanded to keep the mass below. (To reduce the overall mass of the vehicle)
In the above, run flat (run flat) has been devised by a tire manufacturer and involves a change in the tire structure, and thus has been called a “run flat tire”. However, since the content of the present invention does not involve any change in the tire structure, it will be called a “run flat system” or “run flat wheel”. Hereinafter, the description will be made with this name.
The core 105 (Fig. 42) of the proposed system for the C structure is made of elastic rubber, and there are over 13kg for 17-inch wheels (see Reference 1 below). The total was 52kg, significantly exceeding the target of spare tire mass (see Reference 2 below).
Reference 1: The core size is 136 × 90 × 66 = 807840. Since 12 of these are used, the volume is about 10L. If the volume of the link part etc. is added to this, it is about 13L. Since the density of the rubber is approximately 1 kg / L, the core mass is approximately 13 kg, which is consistent with the above measured value.
Reference 2: For 17-inch tires, tire = 10 kg, wheel = 11 kg, so the spare tire mass is 21 kg. The mass target is to keep it below this with four cores.
[0008]
(2) About “the bulk of the core is large”
The core is very bulky because it requires an outer diameter that can support the car when punctured.
ShiTheTherefore, if it tries to make by integral molding, a die and a molding machine will become large and production cost will be high.
In addition, it is difficult to efficiently load the cargo space, and the logistics cost is high.
The run-flat tire core 105 needs to be housed in the tire 108 (see FIG. 42). However, since the outer diameter of the core is larger than the inner diameter of the tire, some contrivance is required for insertion into the tire.
[0009]
(3) About “core binding is difficult”
C structureAlthough the core 105 can be housed in the tire 108 by making, if the inner diameter of the core is small when inserted into the rim 107, the push-in resistance increases, and it is difficult to remove. (Fig. 43)
If the inner diameter of the core is made large so that it can be pushed in easily, the contact pressure between the rim and the core decreases, and the core floats away from the rim bottom due to the centrifugal force applied to the core during running. As a result, the restraining force on the rim of the core is lost, and it moves around in the tire when the vehicle turns or brakes, causing a hitting sound.
In order to prevent the core from floating, it is necessary to make a large inner diameter of the core at the time of insertion, and to fix the core to the rim after the insertion. However, after inserting the core into the tire, the distance between the tire and the rim is narrow, and the gap is only on the outer side 109 in the axial direction of the wheel. (Fig. 44)
The present invention relates to the response to the above-described problems of the C structure.
[0010]
[Means for Solving the Problems]
(1) Weight reduction of the core (claims)1, 2, 6, 12Configuration corresponding to
In order to reduce the weight of the core, it is necessary to scrape unnecessary portions using a material having a low density. The above-described core has a volume of about 0.8 L (L: liter) per protrusion. If it is made of a material having a density of 1 as it is, it will be about 0.8 kg, and the whole projection will be 10 kg, which is too heavy. Therefore, the material is reinforced resin (for example, glass fiber mixed resin; density is 1.5 to 1.7), the projecting portion is hollow, and the volume is reduced to reduce the weight.
The run-flat system is targeted to withstand a distance of 200 km in a punctured state. When punctured, the core must fully support the vehicle mass. Since the tire runs about 2 m per rotation, if it runs 200 km, the weight (W) of the vehicle mass is repeatedly received 1 million times. Further, it was assumed that a load on the front and rear, left and right due to turning and braking (70% of the vertical load = 0.7 W was expected) was received 1% (10,000 times) of the vertical load, and a shape satisfying the strength was considered by FEM analysis. (Fig. 5)
As a result, a core shape as shown in FIGS. 1 to 4 was obtained as a shape that can withstand loads of up and down, front and rear, and left and right and can be easily manufactured by injection molding. The core 10 has a box shape in which the upper surface 13 is closed and the lower surface 14 is opened, and a lattice-shaped reinforcing plate 12 is placed inside the box 11. The vertical direction of the core corresponds to the radial direction of the wheel when the core is mounted on the wheel, the upper surface of the core corresponds to the outer side in the radial direction of the wheel, and the lower surface of the core corresponds to the inner side in the radial direction of the wheel.
The reason for closing the upper surface is mainly to withstand longitudinal force and lateral force. The grid is provided for overall reinforcement. The shape of the lattice is not limited to a cross shape, and various shapes as shown in FIG. 4 can be considered according to the necessity of strength.
With this structure, when the core body (box 11 portion) and the plate constituting the lattice 12 are made with a thickness of 2 to 4 mm, a material with a density of 1.6 g / cc is used, and 1 projection (1 block) The mass of this is about 0.3 kg (in the case of a 17-inch wheel), and the target overall mass can be achieved.
[0011]
(2) Reduction of core volume and bonding method (claims)1, 2, 6, 12Configuration corresponding to
If all the cores are made in one piece, it will be used for 17 cm tires and will be a large structure with a diameter of 560 mm, a width of 130 mm, and a thickness of 66 mm. If this is the case, the mold for molding becomes large, the molding machine becomes large, and the structural cost increases. In addition, it is bulky and inefficient during transportation.
The core proposed by the present applicant with the above-mentioned C structure is not a flat shape but a shape provided with 6 to 15 protrusions for "insertability", "air column resonance prevention" and "puncture alarm sound generation". It has become. Therefore, in order to solve the above problems, each protrusion is formed as one block 15 and connected to each other in a chain shape to constitute the core 10 (FIGS. 6 to 8). By adopting the block connection structure, each molded product is reduced, and the manufacturing cost and the distribution cost can be reduced.
When the core is made into a block shape, the joining work is difficult because of the work space unless it is done before fitting the tire into the rim. Therefore, the procedure is as follows.
(I)A required number of cores (12 in the examples of FIGS. 6 and 7) are connected. Open both ends without connecting. (Claims1Configuration corresponding to
( ii )Insert the core into the tire, and then join the open ends.
( iii)Install the lashing device.
( iv)Insert the core 10 together with the tire into the rim.
(V)Secure the rim with the lashing device. (Claims2Configuration corresponding to
Since the connected cores are not joined at both ends, even if the core outer diameter is larger than the tire inner diameter, it can be easily inserted into the tire.
In order to facilitate the coupling of the cores, the cores are coupled by the split pin method as shown in FIGS. Since a force is not applied to the connecting portion after the core is secured to the rim, the split pin 16 is sufficient for the connection strength. The diameter of the split pin is made sufficiently smaller than the hole diameter of the coupling bracket to enable flexible movement of the coupling portion 17 and facilitate insertion of the core into the tire. (Claims1Configuration corresponding to
In addition, the core coupling portion 17 is provided at a substantially central height of the core to improve the flexibility of the core after connection. (Claims1Configuration corresponding to
[0012]
  By adopting the core coupling and insertion method as described above, it is possible to set and load the core to a tire (50% to 80%) having a higher flatness than that of the conventional core type. . As a result, it is possible to reduce the weight of the run-flat system, and to improve riding comfort and noise problems.
The core is removed in the reverse order of the above when changing the tire. That is,
(I)Loosen the bondage.
( ii )Remove the tires from the rim.
( iii)Remove one core connection.
( iv)Pull the core out of the tire.
[0013]
(3) Core securing method (claims)2, Claims6Configuration corresponding to
As described in the problem (3), the inner diameter of the core is increased in order to facilitate mounting on the rim, and it is not in close contact with the rim just by being inserted. Therefore, there is a concern that if the vehicle is run as it is, it will move around and be damaged or generate abnormal noise.
Centrifugal force from running is applied to the core. For example, if a 0.3 kg core block is mounted at a position where the height of the center of gravity (distance from the center of rotation) is 248 mm, the centrifugal force when traveling at 180 kg / h = 50 m / s is one rotation of the tire. Considering the mileage of 2m,
F = mrω²= 0.3 x 0.248 x (50/2 x 2π)²= 1834N (183kg weight: 610 times its own weight)
And it is quite a big force.
The core must be secured to the rim with a strength that does not rise even when centrifugal force is applied.
If the core is tied up at a high position, the core itself is subjected to a large binding force load to counter the centrifugal force, which makes it difficult to strength. As a result, the mass is increased by reinforcement for improving the strength. Therefore, it is desirable to fix the core in the lowest possible position (position close to the rim).
[0014]
[Lashing method]
(I)Press with belt or wire tension. (Claims2Configuration corresponding to
A core pressing shelf 18 is provided at a position in contact with the core rim, and the top of the shelf 18 is wrapped with an annular belt 19 (FIGS. 10 and 11) or a wire 20 (FIG. 12) and secured. Then, adjust the belt tension and hold it down with the necessary securing force. The belt 19 and the wire 20 may be made of any material as long as it can withstand a necessary tension.
( ii )Press with the spring force of the hinge core. (Claims6Configuration corresponding to
As shown in FIG. 13 and FIG. 14, the core is coupled with the hinge structure 21 at a low position, and a tension is generated by the bending reaction force of the hinge core bar 22 to obtain a securing force.
After the end of the connected core is opened, it is put in the tire and assembled into the rim, and then the open ends are pulled together to join. As a result, a bending force is applied to all hinges, and the reaction force of the elastic deformation of bending becomes tension.
[0015]
[Adjustment method of lashing tension]
(I)For wires and belts (claims)3, 4, 5Configuration corresponding to
A. Knot method (claim)3Configuration corresponding to
A knot mechanism (ring) 23 shown in FIG. 15 is formed in the coupling portion of the belt, a rod 24 having a rectangular cross section is inserted into the ring 23, and the rod 24 is rotated (from the state of FIG. The belt tension is adjusted by changing the knot length by rotating the rod 24 by 90 ° in the state of (b). (Claims3Configuration corresponding to
As shown in FIG. 16, the rectangular cross-section rod 24 straddles the belt on the left and right sides of the core (the rod 24 extends in the wheel axis direction), so that tension adjustment can be performed from the gap outside the wheel. (Claims9, Claims10Configuration corresponding to
At the time of tightening, a detent force of the adjusting rod is generated by the belt tension itself. However, if a detent mechanism 25 as shown in FIG.
One end of the rod has a bolt head structure 26 and can be tightened with a T wrench or the like. A protrusion 27 as shown in FIGS. 16 and 15 (b) is attached to the opposite end of the rod to prevent the rod from coming off during tightening.
The knot method appears in Example 1 described later.
[0016]
B. Inversion prevention link system (claim)4Configuration corresponding to
A link mechanism 28 as shown in FIG. 18 is inserted into the belt joint, and the intermediate link 29 is rotated and tightened. The link mechanism 28 connects the left and right links 30 and 31 with an intermediate link 29, and rotates the intermediate link 29 by approximately 180 °, thereby reducing the length of the link mechanism 28 to (B) and (D) in FIG. It consists of a mechanism that changes between. This link mechanism 28 appears in Example 2 described later.
As in the case of the knot method, the intermediate link 29 may be connected to the left and right with a rod (rod 24 in FIG. 16) so that it can be tightened from the outside of the wheel. (Claims9, Claims10Further, the outer side and the inner side may be tightened separately.
As shown in FIG. 18C, when the mechanism 28 is tightened to a position exceeding the neutral position, a moment in a direction in which the tightening is not loosened by the belt tension acts and does not loosen. (Anti-inversion mechanism)
What is necessary is just to reversely rotate an intermediate link when removing.
[0017]
C. Turnbuckle method (claim)5Configuration corresponding to
As shown in FIG. 19, the belt joint portion is coupled with one tumble buckle 32 having a left screw and a right thread cut, and the worm gear mechanism 33 is engaged with the outer peripheral screw of the tumble buckle 32 to rotate the tumble buckle 32. And tighten.
The worm gear rod 34 (rod 24 in FIG. 16) connects the worm gear mechanisms on the left and right sides of the core, and the necessary tension is obtained by tightening from the outer side in the wheel axis direction. (Claims9, Claims10Configuration corresponding to
Since it is the worm gear 33, there is little concern about loosening, but it is possible to prevent loosening by using a double nut just in case.
[0018]
( ii )Hinge core bar spring type (Claims)7,8Configuration corresponding to
A. U-shaped hinge system (claim)7Configuration corresponding to
As shown in FIG. 20, the hinge core rod 22 of the final fastening portion is U-shaped, and after connection, as shown in FIG.
The height of the hinge point is devised so that a loosening prevention moment can be obtained by a pulling force as shown in FIG.
[0019]
B. Hook method (claim)8Configuration corresponding to
As shown in FIG. 22, the final fastening portion is a hook 35. The counterpart core is pulled to obtain tension, and in this state, the hook 35 is hooked on the hinge rod 22 and fixed. This structure appears in Example 3 to be described later.
When removing the hook 35, the tension is once applied to allow the hook portion to be removed and then removed.
[0020]
  above(I),( ii )In any of these methods, a balance weight is attached to the opposite side of the tension adjusting mechanism 180 degrees. This is to compensate the imbalance caused by the provision of the tension adjusting mechanism to balance the rotation of the run-flat core mounting wheel. (Claims11Configuration corresponding to
[0021]
[Other core requirements]
◇ Fin (claim)12Configuration corresponding to
In the previously proposed lateral loading wheel and core structure of the C structure, the core functions to prevent air column resonance noise by partitioning the air column of the tire and changing the air column resonance frequency. (Fig. 23)
In FIG. 23 (a), the air column resonance at 1389 Hz was effectively reduced, and in FIG. 23 (b), the air column resonance at 690 Hz was effectively reduced.
In order to effectively perform the role of partitioning the air column, it is necessary to block 70% or more of the air passage (tire air chamber cross-sectional area) according to experiments.
On the other hand, it is difficult to make the cross-sectional area of the core 70% or more of the cross-sectional area of the tire air chamber due to the need for weight reduction and necessary strength of the core, loadability to the tire, establishment of a securing mechanism, and the like. .
Therefore, fins 36 as shown in FIG. 24 and FIG. 25 are attached to the core to play the role of blocking the air passage 37, but the mass is not increased, so that it does not interfere with loading and securing. Moreover, since the shape of the core is made compact by this method, it is easily established in terms of strength.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Example 1: Belt type tying method (tension adjustment by knot)
As shown in FIGS. 26 to 29, a plurality of blocks 15 of the core 10 (each block has a configuration in which a lattice-shaped reinforcing plate is provided inside a box shape with the upper surface closed) can be bent by the split pins 16. Connect and configure. The left and right shelves 18 formed on the core 10 are pressed from the outside by a belt 19 so that the core 10 is brought into close contact with the rim 38 so as not to lift. A ring 23 is provided at the knot of the belt 19, and a rod 24 having a rectangular cross section is inserted therein. The rod 24 is rotated 90 ° to apply tension to the belt 19. The rod 24 is extended to the left and right of the core, and the left and right belts 19 are tightened simultaneously from the outside of the wheel. Fins 36 are formed on the left and right side surfaces of the core 10, and the tire air passage 37 is divided into a plurality of sections in the wheel circumferential direction so as to prevent air column resonance.
[0023]
Example 2: Belt-type tying method (tension adjustment by a reverse prevention link)
As shown in FIGS. 30 to 32, a plurality of blocks 15 of the core 10 (each block has a configuration in which a lattice-shaped reinforcing plate is provided inside a box shape whose upper surface is closed) can be bent with a split pin 16. Connect and configure. The left and right shelves 18 formed on the core 10 are pressed from the outside by a belt 19 so that the core 10 is brought into close contact with the rim 38 so as not to lift. A link mechanism 28 is provided at the connecting portion of the belt 19, and the intermediate link 29 is rotated 180 ° to change from the state of FIG. 31 to the state of FIG. 30 to apply tension to the belt 19. Rotational tightening may be performed first on the rear link, and then the front link may be tightened. The rod 24 may be extended to the left and right of the core, and the left and right belts 19 may be tightened simultaneously from the outside of the wheel. Fin 36 (not shown) may be provided to prevent air column resonance in the tire air passage 37.
[0024]
Example 3: Hinge type securing method (tension adjustment by hook)
As shown in FIGS. 33 to 36, a plurality of blocks 15 of the core 10 (each block has a configuration in which a lattice-shaped reinforcing plate is provided inside a box shape whose upper surface is closed) can be bent by a hinge structure 21. Connected to and configured. The belt 39 is wound and pulled to bring the adjacent blocks 15 close to each other, the hook 35 is hooked on the hinge core rod 22, and tension is generated in the core connecting structure by the elastic bending reaction force of the hinge core rod 22. The core coupling structure is secured, and the core 10 is brought into close contact with the rim 38 so as not to float. In this case, the hinge core rod 22 is supported by one core block 15 at both ends, and the hook 35 of the adjacent core block 15 is applied to the center portion, so that the load from the hook 35 is applied to the center portion of both end support rods. As a result, it bends elastically, and the reaction force generates tension in the core coupling body. Further, fins 36 are formed on the left and right side surfaces of the core 10, and the tire air passage 37 is partitioned into a plurality of sections in the wheel circumferential direction so as to prevent air column resonance.
[0025]
【The invention's effect】
  Claim3, 4, 8, 14According to the core structure of the run-flat wheel, the core shape is a thin-walled box shape with the top closed, and a lattice plate for reinforcement is put in the box, so that weight reduction is achieved while satisfying the load requirements. be able to.
Claim3, 4, 8, 14According to the core structure of the run flat wheel, since the core is composed of a plurality of (6 to 15) blocks in the same shape and connected in a chain, the core can be reduced in volume. Manufacturing and logistics costs can be reduced.
Claim1According to the core structure of the run-flat wheel, the core coupling is made flexible and the structure is such that at least one core connection is opened in the circumferential direction until the core is loaded into the tire. Can be easily loaded.
Claim2With the run-flat wheel core structure, the belt or wire is wound at a low position of the core, and the core is pressed against the rim with its tension, so the core does not move away from the rim. You can
Claim3According to the core structure of the run flat wheel, a belt (knot) is formed at the final seam of the belt and wire, and a belt with a rectangular cross section is sandwiched between them and rotated to change the belt length and adjust the tension. Since the structure is adopted, a predetermined tension can be applied to the belt and the wire by a simple operation of rotating the rod 90 °.
Claim4According to the core structure of the run-flat wheel, the final seam is connected by a link mechanism that prevents the reversal of tension, and the intermediate link is rotated to adjust the tension. Therefore, the intermediate link is rotated 180 °. A predetermined tension can be applied to the belt and the wire with a simple operation.
Claim5According to the core structure of the run-flat wheel, the final seam is connected by a tan buckle mechanism and the tension is adjusted with a tightening bolt converted by 90 degrees with a worm gear. A predetermined tension can be applied to the belt and the wire.
Claim6With the run-flat wheel core structure, the cores are hinged at low positions so that the cores do not move away from the rim, and the cores are Since it has a structure in which it is pressed against and adhered to the hinge, tension generation and block connection can be achieved simultaneously by the hinge core rod.
  Claim7According to the core structure of the run-flat wheel, the core rod of the final seam hinge is U-shaped, and the necessary tension is obtained by its rotation. Therefore, the U-shaped hinge core rod is simply rotated 180 °. With a simple operation, a predetermined tension can be applied to the core assembly.
Claim8According to the run-flat wheel core structure, the hinge core rod of the last seam is hooked and fixed with a hook to obtain the required tension, so the core core can be simply operated by hooking the hinge core rod with the hook. A predetermined tension can be applied to the connector.
Claim9With the run-flat wheel core structure, the right and left side tensions are adjusted at the same time by connecting the left and right tightening parts with a rod and rotating the bolt head outside the rod. Can be adjusted simultaneously.
Claim10According to the core structure of the run flat wheel, the coupling tension of the core can be adjusted from the outside of the wheel.
Claim11According to the run-flat wheel core structure, it is 180 degrees oppositeOn the sideSince the balance weight is provided, the rotation balance as the wheel can be achieved regardless of the tension adjusting mechanism.
Claim12According to the core structure of the run flat wheel, since the fin having the air wall function is attached to the core, the core can be made compact while reducing the air column resonance sound.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a core structure of a run flat wheel of the present invention.
FIG. 2 is a bottom view of the core structure of the run flat wheel of the present invention.
FIG. 3 is a side view of the core structure of the run flat wheel of the present invention.
FIG. 4 is a bottom view showing various examples of the arrangement of lattice reinforcing plates in the core structure of the run flat wheel of the present invention.
FIG. 5 is a perspective view showing the number of loads applied to the block-shaped core of the run flat wheel of the present invention.
FIG. 6 is a side view in which a core connecting a plurality of blocks of the run flat wheel of the present invention is developed linearly.
7 is a side view of the core in a state in which the core in which a plurality of blocks in FIG. 6 are connected is put in a tire and both ends are connected.
FIG. 8 is a side view of a part of the core in which the cores are connected so as to be bendable in the intermediate portion in the height direction.
FIG. 9 is a cross-sectional view of a joint portion when core blocks are connected with a split pin.
FIG. 10 is a cross-sectional view of a core securing structure using a belt.
11 is a side view of the structure of FIG.
FIG. 12 is a cross-sectional view of a core securing structure using wires.
FIG. 13 is a side view of a core securing structure using a hinge core rod.
14 is a plan view of the core securing structure shown in FIG.
FIGS. 15A and 15B are side views of a knot-type securing tension adjusting structure, where FIG. 15A shows a loosening state and FIG.
FIG. 16 is a cross-sectional view of a structure for simultaneously operating the left and right core securing tension adjusting structures.
FIGS. 17A and 17B are anti-rotation mechanisms for a knot-type securing tension adjusting structure, where FIG. 17A is a side view and FIG.
FIG. 18 shows an anti-reverse link type securing tension adjusting structure, in which (A) is a neutral plan view, (B) is a neutral side view, (C) is a tightened side view, ) Shows side views when loosened.
FIG. 19 shows a tuck buckle type securing tension adjusting structure, in which (a) shows a side view and (b) shows a front view perpendicular to (a).
FIGS. 20A and 20B are plan views of a hinged core spring-type securing tension adjusting structure, where FIG. 20A shows a loosened state and FIG. 20B shows a tightened tension adjusting structure.
FIG. 21 is a side view of a hinged core spring-type securing tension adjusting structure in which a loosening prevention moment is applied.
22A and 22B show a hook-type securing tension adjusting structure, where FIG. 22A is a side view and FIG. 22B is a plan view.
FIG. 23 is a side view of an air column in a tire when a partition is placed in the air column, where (A) shows the case where the air column resonance frequency is 1380 Hz, and (B) shows the case where the air column resonance frequency is 690 Hz. , Respectively.
FIG. 24 is a cross-sectional view of a run-flat wheel core structure when fins are provided in the core.
FIG. 25 is a side view of a part of the core structure of a run flat wheel when fins are provided in the core.
FIG. 26 is a side view of a part of the core structure of the run flat wheel according to the first embodiment of the present invention.
FIG. 27 is a side view of the block connecting portion of the core structure of the run flat wheel according to the first embodiment of the present invention.
FIG. 28 is a cross-sectional view of the block connecting portion of the core structure of the run flat wheel according to the first embodiment of the present invention.
FIG. 29 is a cross-sectional view of a block central portion of the core structure of the run flat wheel according to the first embodiment of the present invention.
FIG. 30 is a side view of a part of the core structure of the run flat wheel according to the second embodiment of the present invention when tightened.
FIG. 31 is a side view of the run-flat wheel core structure according to the second embodiment of the present invention when part of the core structure is loosened.
FIG. 32 is a cross-sectional view of a block connecting portion of the core structure of the run flat wheel according to the second embodiment of the present invention.
FIG. 33 is a side view of a hook fixing portion of the core structure of the run flat wheel according to the third embodiment of the present invention.
FIG. 34 is a plan view of a hook fixing portion of the core structure of the run flat wheel according to the third embodiment of the present invention.
FIG. 35 is a side view of the block connecting portion and the vicinity thereof in the core structure of the run flat wheel according to the third embodiment of the present invention.
FIG. 36 is a plan view of the block connecting portion and the vicinity thereof in the core structure of the run flat wheel according to the third embodiment of the present invention.
FIG. 37 is a half sectional view of a core structure of a conventional core type (pedestal rim type) run flat wheel.
FIG. 38 is a half sectional view of a core structure of a conventional core type (deformed tire and rim type) run flat wheel.
FIG. 39 is a half sectional view of a core structure of a conventional sidewall-reinforced run-flat wheel.
FIG. 40 is a half sectional view of the core structure of the lateral loading wheel + core type run-flat wheel previously proposed by the present applicant.
41 is a front view of a quarter portion of the structure of FIG. 40. FIG.
FIG. 42 is a cross-sectional view of a tire, (B) is a cross-sectional view of the core, and (C) is a front view of the core, of the core structure of the integral core type run-flat wheel. .
FIG. 43 is a cross-sectional view of a core type run-flat wheel core structure when a tire containing the core is laterally loaded.
FIG. 44 is a half cross-sectional view of a core-type run-flat wheel core structure when a tire containing the core is laterally loaded and then the tire is lifted to secure the core.
[Explanation of symbols]
10 core
11 boxes
12 Reinforcement plate (lattice)
13 Top surface
14 Bottom
15 blocks
16 split pins
17 Bonding part
18 shelves
19 belt
20 wires
21 Hinge structure
22 Hinge core
23 rings (knots)
24 Rod (Rod with a rectangular cross section)
25 Detent
26 bolt head
27 Protrusions
28 Link mechanism
29 Intermediate links
30, 31 left and right links
32 buckles
33 Worm gear
34 Rod
35 hook
36 fins
37 Air passage
38 rims
39 belt

Claims (12)

The vertical direction of the core corresponds to the wheel radial direction when the core is mounted on the wheel, the upper surface of the core corresponds to the outer side in the wheel radial direction, each core is closed and the lower surface is released. It has a shape with a thin-walled box and a lattice plate provided for reinforcement in the box,
The core is composed of a plurality of blocks having the same shape, and the plurality of blocks are connected in the wheel circumferential direction.
By connecting the core block using a split pin having a length smaller than the core block width and a diameter smaller than the hole diameter formed in the core block coupling bracket, the core coupling is bent to a flexible structure, until loaded into the core of the tire remain open at least one location core coupled to the wheel circumferential direction, the core structure of the run-flat wheels. The vertical direction of the core corresponds to the wheel radial direction when the core is mounted on the wheel, the upper surface of the core corresponds to the outer side in the wheel radial direction, each core is closed and the lower surface is released. It has a shape with a thin-walled box and a lattice plate provided for reinforcement in the box,
The core is composed of a plurality of blocks having the same shape, and the plurality of blocks are connected in the wheel circumferential direction.
Core has a ledge projecting to the left and right lower position in the height direction, wound belt or wire from the outside to the shelves of a plurality of cores, run-flat which core a is adhered against the rim in its tension The core structure of the wheel. The core structure of the run flat wheel according to claim 2 , wherein a ring is formed at the last joint of the belt and the wire, a rod having a rectangular cross section is sandwiched in the ring, and the belt length is changed by rotating to adjust the tension. The core structure of the run flat wheel according to claim 2 , wherein the final seam of the belt and the wire is connected by a link mechanism having an effect of preventing the reversal of tension, and the tension is adjusted by rotating the intermediate link. The core structure of the run flat wheel according to claim 2 , wherein the final seam of the belt and wire is connected by a tan buckle mechanism, and the tension is adjusted by a fastening bolt converted by 90 degrees with a worm gear. The vertical direction of the core corresponds to the wheel radial direction when the core is mounted on the wheel, the upper surface of the core corresponds to the outer side in the wheel radial direction, each core is closed and the lower surface is released. It has a shape with a thin-walled box and a lattice plate provided for reinforcement in the box,
The core is composed of a plurality of blocks having the same shape, and the plurality of blocks are connected in the wheel circumferential direction.
The core together hinged in the core height direction lower position, in the tension due to bending reaction force of the hinge mandrel, the core structure of the run-flat wheel is brought into close contact against the core to the rim. The core structure of a run flat wheel according to claim 6 , wherein the core rod of the final seam hinge is U-shaped, and the necessary tension is obtained by the rotation thereof. The core structure of a run flat wheel according to claim 6 , wherein the hinge core rod of the final seam is hooked and fixed to obtain a necessary tension. Connecting the fastening portion of the left and right of the core with a stick, by rotating the bolt head of the wheel outside of the rod, according to claim 3 or claim 4 or claim 5 or claim for adjusting the tension of the left and right sides of the core at the same time The core structure of the run flat wheel according to 7 . The core structure of the run flat wheel according to claim 9 , wherein the coupling tension of the core can be adjusted from the outside of the wheel. Core structure according to claim 3 or claim 4 or claim 5 or claim 7 or run-flat wheel of claim 8, wherein a balance of the 180-degree opposite side as the wheel provided with a balance weight of tension adjusting mechanism. The vertical direction of the core corresponds to the wheel radial direction when the core is mounted on the wheel, the upper surface of the core corresponds to the outer side in the wheel radial direction, each core is closed and the lower surface is released. It has a shape with a thin-walled box and a lattice plate provided for reinforcement in the box,
The core is composed of a plurality of blocks having the same shape, and the plurality of blocks are connected in the wheel circumferential direction.
Run-core structure of a flat wheel which is provided with fins on the left and right sides of the core.

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