CN111572290A

CN111572290A - Inner support type W-shaped safety inner support device of tire

Info

Publication number: CN111572290A
Application number: CN202010362047.8A
Authority: CN
Inventors: 姜献峰; 董星涛
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-08-25

Abstract

An inner support type W-shaped safe inner support device of a tire comprises a sliding plate, inner support petals, support blocks and a locking device, wherein the sliding plate is arranged outside the inner support petals, the support blocks are arranged in the inner support petals, the inner support petals and the support blocks can be connected end to jointly form a complete W-shaped inner support structure, and the sliding plate is used for maintaining that the shape or position of each inner support petal can be changed in a certain range as a whole; the supporting blocks are used for connecting the inner supporting petals and bearing pressure, and form a W-shaped inner supporting structure together with the inner supporting petals. The invention forms a stable multi-zone supporting form, and the locking force between the tire and the rim can be adaptively adjusted according to different working conditions.

Description

Inner support type W-shaped safety inner support device of tire

Technical Field

The invention relates to an automobile safety device, in particular to a safe inner supporting device of a tire.

Background

With the great abundance of people's material life, automobiles have become the most common transportation tool in daily life. With the increase of the consumption level of people, in addition to the requirements of energy conservation, comfort, beauty and the like for vehicles, the safety also becomes an important index for people to consider the vehicles. For special vehicles such as large trucks, armored vehicles or vehicles with bulletproof requirements, safety is the primary consideration. Traffic accidents caused by tire hazards account for a large proportion of highway accidents. In addition to the reason that the automobile tire itself is one of the most severely worn parts on the automobile, along with the rapid popularization of the automobile, many drivers do not pay attention to the using state of the automobile, and neglecting the daily maintenance of the automobile is also a great reason that the tire becomes a traffic safety hazard. For the application of special vehicles or vehicle tires with bulletproof requirements, the tires are required to be capable of driving for a certain distance at a certain speed after losing pressure during driving so as to reach a maintenance place or a safe place. In response to these problems, the concept of a safety tire has been proposed as early as the last century, and a great deal of work has been done by a number of well-known tire manufacturers to develop safety tires.

Many kinds of safety tires have been developed under many years of efforts of many scholars and engineers, wherein the inner support type tire is one of superior functions and wide application prospects. The inner support type safety tire, as the name implies, is a form of adding a support between the tire and a rim so that the tire has the capability of continuously running for a certain distance at a certain speed after losing pressure. Although there are many forms of inner support type run-flat tires available today, they are not popular in the market due to various drawbacks and deficiencies.

1) The force distribution is not reasonable. At present, the inner support type safety tire is mostly an I-shaped structure, for example, a safety tire inner support device disclosed in Chinese patent with the application number of CN 201910102468.4. The structure causes that main stress points of the wheel are concentrated in the middle of the rim in a small range after the tire is decompressed, and the middle of the rim is a weak part on the rim, and two sides of the rim are strong parts, so that the rim is easy to damage.

2) Special rims are required. Taking the most typical michelin PAX run-flat tire as an example, one of the great disadvantages is the need for a specially made rim, greatly reducing the application range and increasing the cost.

3) The tire and rim cannot be locked. In a flat tire accident, the most harmful is the separation of the tire from the rim after the flat tire is broken, which directly results in the rim being damaged and the vehicle being out of control. The normal process of assembling the tire is to put the tire on the rim outer sleeve, so the tire and rim are closed, and how to make the inner support lock the tire and rim inside is a contradiction. The inner supports of most inner support type tires play a supporting role only after the tire is decompressed.

4) And (4) assembling, disassembling and locking the inner support. For the convenience of loading and unloading, the inner supports are mostly in a multi-petal type. The connection between the inner support flaps is too hard, which causes inconvenience in assembly and disassembly; the connection between the inner support flaps is too soft, so that the assembling and disassembling process is unstable, the situations of blocking, dislocation and the like are easy to occur, and the assembling and disassembling are also inconvenient.

5) Adjustable tire rim locking force. The tighter the tire is not locked to the rim, the better. When the automobile normally runs and the tire is not punctured, the driving experience of the automobile in normal driving can be influenced if the lock between the tire and the rim is too tight. Ideally, the inner support provides a proper pre-tightening force which does not affect the running of the vehicle when the vehicle runs normally, and the locking force can be adjusted to adapt to different working conditions after the tire is burst and loses pressure.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the internal support type W-shaped safe internal support device suitable for various rims, which can transmit force to the central area of the rim through the support block and simultaneously disperse the force to two sides of the strong rim to bear the force when the force is applied, thereby forming a stable multi-area support form; meanwhile, the inner support flaps of the device are connected in a moderate strength mode, and the locking force between the tire and the rim can be adjusted in a self-adaptive mode according to different working conditions.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an inner support type W-shaped safe inner support device of a tire comprises a sliding plate, inner support petals, support blocks and a locking device, wherein the sliding plate is arranged outside the inner support petals, the support blocks are arranged in the inner support petals, the inner support petals and the support blocks can be connected end to jointly form a complete W-shaped inner support structure, and the sliding plate is used for maintaining that the shape or position of each inner support petal can be changed in a certain range as a whole; the supporting blocks are used for connecting the inner supporting petals and bearing pressure, and form a W-shaped inner supporting structure together with the inner supporting petals.

Further, the sliding plates are of a segmented type, and the sliding plates are connected end to end.

Still further, a guide structure is designed on the inner support petals so as to facilitate and reinforce the connection between the inner support petals.

Preferably, the front end and the rear end of the inner supporting flap are both provided with a guide structure.

Furthermore, the left end and the right end of the inner supporting valve are pressed on the inner edge of the automobile tire and then pressed on a rim together with the tire.

The support block within the inner support flap is divided into A, B portions.

A supporting block A is connected to the supporting flap in each block, four connecting pieces are arranged at corresponding positions of the inner side surfaces of the corresponding inner supporting flaps through four bayonets distributed in the middle of the top of the block A and the inner supporting flaps, the connecting pieces can be quick-connection structures such as reeds, buckles and floating connections, and the supporting flaps in each block and the supporting block A connected with the supporting flaps form a W-shaped inner supporting structure together.

Further, the connection between the supporting blocks A is realized through shaft pin structures on two sides of the top of the A.

Furthermore, an internal connection installation locking device is arranged in the supporting block A, and the internal connection installation locking device is connected with the two adjacent A blocks by adopting a screw rod and a connecting piece on the connection locking device instead of being connected with the two adjacent A blocks through shaft pin structures on two sides of the top. Referred to herein as a special support block a.

Preferably, the front end, the rear end, the left end and the right end of the block A are provided with connecting object guide holes for threading flexible connecting objects such as steel wires, nylon ropes and the like, and the functions of preventing dislocation, assisting positioning and the like can be achieved.

The block B is buckled on the rim in a segmented end-to-end way, and the contact surface of the block B and the rim is further reinforced by adopting the forms of glue joint and the like.

Furthermore, the surface of the block B is provided with a tooth-shaped sliding buckle structure corresponding to a tooth-shaped sliding opening at the bottom of the block A so as to ensure that the inner support petal moves along the track of the block B during assembly, and simultaneously, the locking effect of the block A and the block B can be ensured during the operation of the W-shaped inner support.

The technical conception of the invention is as follows: in automobiles, weight determines energy consumption, and therefore, minimizing the weight of the internal support lobes and support blocks is also a critical factor in all internal support designs. In the invention, preferably, the internal support valve and the support block are reasonably optimized by methods such as finite element analysis, topological optimization and the like, and the structure is optimized by reducing the weight of the part with small stress.

The assembly process is that the supporting block B is sleeved on the rim. And connecting the tops of the supporting blocks A by using shaft pins in pairs. And the locking device is arranged in the special supporting block A, and the adjacent supporting block A is connected through a screw and a connecting piece to form a closed-loop connecting structure. The inner support flap is mounted over support block a. An inner support valve with a support block A is arranged on the periphery of the rim sleeved with the support block B. The special supporting block A is connected with the common supporting block A through a screw rod of the locking device and a connecting piece. The common supporting blocks A are connected through shaft pins. The inner support valve and the periphery of the A block are sleeved with a sliding plate to ensure that the inner support valve and the A block are integrated. At the moment, the sliding blocks, the inner support flaps and the inner support and the rim are in a relaxed state and are not locked. Then the tire is sleeved on the periphery of the sliding plate, and the tire side is pressed between the hooves on two sides of the inner support and two sides of the rim. It should be particularly noted that the location of the recesses of the locking means on the support blocks B, the valve core holes on the wheel rim and the particular inner support flaps with locking means should be aligned. After all the parts are placed according to the positions, the locking device is rotated through the valve core hole, the locking device drives the supporting block A to be tightened to the rim side, the supporting block A drives each inner supporting flap to be tightened to the rim side at the same time, and after appropriate pretightening force is applied, the inner support can lock the tire on the rim.

Furthermore, flexible connectors such as steel wires and nylon ropes can be penetrated through two sides of the supporting block A to achieve an auxiliary effect.

Furthermore, the inner support valve, the support block A and the slide plate can be made of various high-strength materials such as nylon; the connecting piece between the inner support valve and the supporting block A can be made of various high-strength materials such as metal plates, nylon and the like.

The invention has the following beneficial effects:

1) the distribution of the force is more reasonable. The strong wheel rim two sides mainly bear force, the W-shaped inner support structure enables force distribution to be more reasonable, and the bearing force can also strengthen the locking effect of the inner support on the wheel rim for locking the tire.

2) The automobile tire rim has wide application range, does not need a special rim, and can be suitable for most automobile tires only by changing the structure and the size of parts of different tires.

3) Can effectively prevent the tire from being peeled off from the rim. The contradiction of how to lock the inner support object on the inner side of the tire and the rim in the closed space of the tire and the rim is solved by the mode of locking the valve core hole. The W-shaped inner support provided by the invention can press the tire on the rim. When the automobile runs normally, normal running cannot be affected by proper pretightening force; after the tire is decompressed, the stress applied to the tire is transmitted to the two sides of the rim through the inner support flaps, so that the effect of locking the tire on the rim is enhanced.

4) The inner support is convenient to assemble and disassemble, stable and firm to lock. The locking mode with moderate flexibility is adopted to be assisted by the sliding buckle structure, so that the connection rigidity is ensured, the loading and unloading process is very smooth, and the situations of blockage, dislocation and the like can be avoided.

5) The locking force between the rims of the tires is adjustable. Because the supporting block A is connected through the shaft pin structure, after the tire is blown out and loses pressure, the effect of flexibly adjusting the locking force can be achieved by rotating the inner supporting flap and the supporting block A by a small angle under different working conditions.

6) The device has simple structure, easy assembly and disassembly, convenient maintenance and repeated use. Because of the multi-petal structure, the inner supporting petal and the supporting block A are only needed to be arranged on the periphery of the tire and then pre-tightening force is applied during assembly. During maintenance, the inner support valve and the support block A are replaced according to the working conditions of the inner support valve and the support block A.

7) The weight is light. The weight of the internal support supporting flap and the supporting block A is reasonably reduced by methods such as finite element analysis topological optimization and the like.

Drawings

Fig. 1 is a schematic view of an inner support flap.

Fig. 2 is a schematic view of a sliding plate.

Figure 3 is a schematic view of support block a.

Fig. 4 is a schematic view of support block B.

Figure 5 is a schematic view of the connection of the inner support flap to support block a.

Fig. 6 is a schematic view of the assembly between support blocks a (locking) and support blocks a and B.

Fig. 7 is a schematic view of the connection of support blocks a and B when unlocked.

Fig. 8 is a schematic view of the support block B assembled with the rim.

Fig. 9 is a schematic view of the connection of the support blocks a and B when locked.

Fig. 10 is a schematic view of the overall assembly when unlocked (without a tire).

Figure 11 is a schematic view of the overall assembly when locked (without a tire).

FIG. 12 is a sectional view of the whole (including tire) whole assembly

In the figure, 1-inner support flap two-end guide structure, 2-connector guide hole, 3-connecting structure, 4-sliding plate, 5-support block A, 6-connecting structure, 7-shaft pin structure, 8-sliding opening, 9-support block B, 10-sliding buckle, 11-inner support flap, 12-special support block B, 13-locking device, 14-wheel rim, 15-valve core hole, 16-special support block A, 17-tire, 18-tire inner edge.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1 to 12, the inner support type W-shaped safe inner support device for tires comprises a sliding plate, 11-inner support flaps, 5-support blocks a, 9-support blocks B and 13-locking devices, and the W-shaped inner support device provided by the invention can be applied to different automobile tires by only adjusting part of the size structure.

The inner supporting device is of a multi-petal type and comprises 11-inner supporting petals with similar structures and a single special connection 13-16-special inner supporting petals of a locking device, and all the 11-inner supporting petals are connected end to form a complete inner supporting structure. As shown in figure 1.

Outside the 11-inner support petals there should be a sliding plate which serves to maintain the ability of the inner support petals as a whole to change shape or position within a certain range. The sliding plates may also be segmented for ease of assembly and manufacture, with the specific number of 4-sliding plates being determined by the assembly, manufacture and practice of the different tires. As shown in figure 2

The connection between the 11-inner support flaps needs to be made in a certain way. 11-the connection between the inner support flaps is made by 7-pin structure. The shaft pin structure ensures certain connection rigidity, and simultaneously enables the connection to have certain flexibility due to the rotation so as to be very suitable for safely supporting and dealing with different working conditions. As shown in fig. 6.

In order to ensure the reliable locking between the inner support flaps, a 1-guide structure can be designed on the inner support flaps to facilitate and reinforce the connection between the inner support flaps. The specific shape and position of the 1-guide structure is determined according to different tires and inner support valve structures. Preferably, the front end and the rear end of the inner support are provided with guide structures, namely 1-two-end guide structures.

The inner support and the 14-automobile wheel rim are required to be locked, and the technical requirement is met through the 13-locking device, the 5-supporting block A and the 9-supporting block B. 5-the support blocks A are connected by a 6-connection structure in the 11-inner support flap. The 6-connecting structure can be a reed, a buckle and other quick-connecting and quick-connecting structures. 5-the bottom of the supporting block A is provided with an 8-sliding opening structure. The 9-supporting block B is sleeved on the 14-automobile rim, and the surface of the 9-supporting block B is provided with a 10-sliding buckle structure which is matched with the 8-sliding opening structure at the bottom of the 5-supporting block A. The 5-support block A is driven to tighten towards the 14-automobile rim along the 10-slide fastener on the 9-support block B by applying force through the 13-locking device. Therefore, the inner support flaps are connected and locked into a whole, and the inner support is locked on the rim, so that the whole set of support device can be firmly held on the rim. Because the inner support flap is of a U-shaped structure, sufficient space is reserved between the inner support flap and the rim for placing the 5-support block A and the 9-support block B. Fig. 7 shows the unlocked connection state, and fig. 9 shows the locked connection state.

Preferably, 2-connector pilot holes are provided on both the 11-inner support flap and the 5-support block A. The flexible connecting objects such as steel wires, nylon ropes and the like can be added into the connecting object guide holes, and the functions of dislocation prevention, auxiliary positioning and the like can be achieved.

The left end and the right end of the inner support flap are pressed on the inner edge of an 18-automobile tire and then pressed on a 14-automobile rim together with a 17-tire.

In this embodiment, the 9-supporting block B is first sleeved on the rim. And connecting the tops of the 5-supporting blocks A in pairs by using a 7-shaft pin structure. And (3) arranging the 13-locking device in the 16-special supporting block A, and connecting the adjacent supporting block A through a screw and a connecting piece to form a closed-loop connecting structure. The 11-inner support flap is mounted on a 5-support block a. An 11-inner support flap with a 5-support block A is arranged on the periphery of a 14-rim sleeved with a 9-support block B. The 16-special supporting block A is connected with the 5-common supporting block A through a screw rod of a 13-locking device and a connecting piece. 5-the common supporting blocks A are connected through a 7-shaft pin structure. 11-the periphery of the inner support flap is sleeved with a 4-sliding plate to ensure that the inner support flap is integrated. The 4-slide plates, 11-inner support flaps, and 14-rim are now relaxed and not locked. As shown in fig. 10. Then 18-the tire is sleeved on the periphery of the 4-sliding plate, and the tire side is pressed between the hooves on the two sides of the inner support and the two sides of the rim.

It should be particularly noted that the location of the 12-special support block B block locking device recess, 14-wheel rim 15-valve core hole and 16-special inner support flap with 13-locking device should be aligned.

After all the parts are placed according to the required positions, the locking device is rotated through the valve core hole 13 15, the locking device 13 drives the support block A5 to be tightened to the rim side, the support block A5 drives the inner support flaps 11 to be tightened to the rim 14 simultaneously, and after appropriate pretightening force is applied, the inner support can lock the tire 17 to the rim 14.

When the automobile normally runs and the working condition of the tire is normal, the load is mainly borne by the air pressure of the tire, the inner supporting device is pressed on the inner side of the automobile tire to be firmly held on the 14-wheel rim under the action of proper pretightening force, and the influence on the normal driving of the automobile can not be caused. When the 17-automobile tire is decompressed, the 17-tire is mainly loaded by the inner supporting device, and the inner supporting device presses the tire on two sides of the rim, so that the tire can be effectively prevented from being peeled. The 4-sliding plates better ensure that each 11-inner support flap works as a whole.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. An inner support type W-shaped safe inner support device of a tire is characterized by comprising a sliding plate, inner support flaps, support blocks and a locking device, wherein the sliding plate is arranged outside the inner support flaps, the support blocks are arranged in the inner support flaps, the inner support flaps and the support blocks can be connected end to form a complete W-shaped inner support structure, and the sliding plate is used for maintaining the shape or position of each inner support flap as a whole to be changed within a certain range; the supporting blocks are used for connecting the inner supporting petals and bearing pressure, and form a W-shaped inner supporting structure together with the inner supporting petals.

2. The internally supporting W-shaped safety internal support device for a tire as in claim 1, wherein said slide plates are segmented, each slide plate being joined end to end.

3. An inner supporting type W-shaped safety inner supporting device for a tire as claimed in claim 1 or 2, wherein a guide structure is designed on the inner supporting flaps for reinforcing the connection between the inner supporting flaps.

4. An inner support type W-shaped safety inner support device for a tire as claimed in claim 1 or 2, wherein a guide structure is provided at both front and rear ends of the inner support flap.

5. An inner support type W-shaped safety inner support device for tires as claimed in claim 1 or 2, wherein the left and right ends of the inner support flap are pressed on the inner edge of the automobile tire and then pressed on the rim together with the tire.

6. An internal support type W-shaped safety internal support device for a tire as claimed in claim 1 or 2, wherein the support block in the internal support petal is divided into A, B parts, a support block A is connected to each internal support petal, the connection between the internal support petal and the A is that four bayonets distributed in the middle of the top of the A are provided with four connecting pieces at corresponding positions on the inner side surface of the corresponding internal support petal, and each internal support petal and the A connected support block form a W-shaped internal support structure; the block B is a block type head and tail connected ring buckled on a rim.

7. The internally supporting W-shaped safety internal support device for a tire as claimed in claim 6, wherein the connection between the supporting blocks a is made by a pin structure on both sides of the top of a.

8. The internal support type W-shaped safety internal support device for a tire as claimed in claim 6, wherein one of the support blocks a is internally connected with a locking device, and the locking device is connected with two adjacent blocks a by using a screw and a connecting piece on the locking device instead of being connected with a pin structure on two sides of the top.

9. The internal support type W-shaped safety internal support device for tires as claimed in claim 6, wherein, connecting object guide holes are arranged at the front, the rear, the left and the right ends of the A block for passing flexible connecting objects.

10. The internal support type W-shaped safety internal support device for a tire as claimed in claim 6, wherein the contact surface of the B block and the rim is reinforced by gluing, and the surface of the B block is provided with a toothed sliding buckle structure corresponding to a toothed sliding port at the bottom of the A block so as to ensure that the internal support flap moves along the track of the B block during assembly and ensure the locking effect of the A block and the B block during the operation of the W-shaped internal support.