Inner support structure of safety tire and safety tire

Abstract

The present invention discloses an inner support body mechanism of a safety tire and a safety tire, belonging to the field of tire technology, the inner support body mechanism comprises a rim, a mounting base, an inner support body body and a locking assembly; the mounting base is mounted on the outer peripheral surface of the rim; a slide groove is provided on the outer peripheral surface of the mounting base; the groove bottom of the slide groove is arc-shaped and the two ends are bent toward its axis; the outer diameters of the two end faces of the inner support body body are different, the large end face of the inner support body body faces the outer side of the vehicle, and the small end face faces the inner side of the vehicle; the inner support body body and the mounting base are distributed inside and outside the outer periphery, and are slidably connected to the slide groove through a slider; the locking assembly is arranged on the slider, and when the vehicle has a tire burst, the locking assembly is passively in an unlocked state, and the inner support body body slides along the groove bottom of the slide groove to cause the inner support body body to tilt, providing a correction force toward the inner side of the vehicle and a support force toward the ground; the present invention can effectively reduce the degree of lateral deviation of the vehicle after a tire burst.

Description

Technical Field

[0001] The present invention belongs to the technical field of tires, and in particular relates to an inner support body mechanism of a safety tire and the safety tire. Background Art

[0002] Traditional tires are prone to blowouts when traveling at high speeds or in adverse road conditions, posing a serious threat to the safety of drivers and passengers. Therefore, there is a need for safer tire technologies. Today, run-flat tires can be categorized into two main types: pneumatic and non-pneumatic. Internally supported run-flat tires, a type of pneumatic run-flat tire, can replace the original tire with a built-in auxiliary support structure after a blowout, allowing the vehicle to continue driving for a certain distance.

[0003] The traditional internal support safety tire will deflate and sink after a tire burst, relying on the traditional inner support body to continue moving, and its rolling radius becomes smaller. When the angular velocity of all tires is the same, the linear velocity of the traditional inner support body is relatively large. The inconsistent rotation speed of the tires on both sides of the vehicle will cause the vehicle to generate a cornering force toward the side of the flat tire. The traditional inner support body cannot provide a correction force toward the inside of the vehicle during rolling to effectively reduce this cornering force.

[0004] Therefore, there is an urgent need for an inner support body mechanism of a safety tire and a safety tire, which can generate a correction force directed to the inside of the vehicle during rolling, so as to effectively alleviate the problem of the existing safety tire generating a cornering force after a tire blowout. Summary of the Invention

[0005] The object of the present invention is to provide an inner support body mechanism of a safety tire and a safety tire, which can effectively reduce the degree of lateral deviation of a vehicle after a tire blowout.

[0006] The present invention provides the following technical solutions:

[0007] In a first aspect, an inner support structure of a safety tire is provided, comprising a rim, a mounting base, an inner support body, and a locking assembly;

[0008] The mounting base is mounted on the outer circumference of the rim; a slide groove is provided on the outer circumference of the mounting base and extends toward the end surface thereof; the bottom of the slide groove is arc-shaped and both ends are bent toward the axis of the mounting base;

[0009] The outer diameters of the two end faces of the inner support body are different. When the rim is installed on the vehicle, the large end face of the inner support body faces the outside of the vehicle, and the small end face faces the inside of the vehicle. The inner support body and the mounting base are arranged inside and outside, and the inner support body is slidably connected to the sliding groove through a slider.

[0010] The locking assembly is arranged on the slider. When the locking assembly is in a locked state, the inner support body and the mounting base remain relatively stationary. When the vehicle has a tire burst, the locking assembly is passively in an unlocked state, and the inner support body slides along the bottom of the slide groove to tilt the inner support body, providing a correction force toward the inside of the vehicle and a support force toward the ground.

[0011] Optionally, in the axial cross-sectional direction of the inner support body, the outer peripheral surface for connecting the small end surface and the large end surface is in a straight line shape or an outwardly bent arc shape;

[0012] In the axial cross-sectional direction of the inner support body, when the outer peripheral surface for connecting the small end face and the large end face is in the shape of an arc bent outward, the magnitude of the correction force provided by the inner support body can be changed by adjusting the curvature of the arc presented by the outer peripheral surface of the inner support body in the axial cross-sectional direction.

[0013] Optionally, the locking assembly is located in the slider, and the locking assembly is a telescopic spring locating pin; one end of the slider is slidably connected to the slide groove, and the other end is connected to the inner surface of the inner support body, the spring locating pin is located in the slider, and in the initial state, the head extends out of the slider; the bottom of the slide groove is provided with a locating hole facing the axis of the mounting base; the head of the spring locating pin is adapted to the locating hole, and when the locking assembly is in the locked state, the head of the spring locating pin is inserted into the locating hole.

[0014] Optionally, a first assembly hole is provided at the end of the slider close to the inner support body; the spring locating pin includes a pin, a telescopic spring and a spring mounting seat, one end of the telescopic spring is connected to the tail of the pin, and the other end is connected to the spring mounting seat; the spring mounting seat is provided with a second assembly hole adapted to the first assembly hole; the inner surface of the inner support body is screwed into the first assembly hole and the second assembly hole through a screw rod.

[0015] Optionally, the slider is a cylinder, and each side wall of the slide groove is provided with at least one row of balls.

[0016] Optionally, there are multiple slide grooves and they are evenly distributed around the rim in a circular form; the slider and the locking assembly correspond to the slide grooves one by one; when the side wall of the slide groove is projected to the bottom of the slide groove, the side wall of the slide groove is an inwardly concave arc.

[0017] Optionally, both ends of the slide groove extend to the end surface of the mounting base, and both end surfaces of the mounting base are provided with limiting devices to prevent the slider from completely sliding out of the slide groove;

[0018] The limiting device includes a limiting baffle; the limiting baffle includes a straight baffle and an inclined baffle; the straight baffle is installed on the mounting base and blocks the end of the slide groove; the head of the inclined baffle is connected to the tail of the straight baffle; the tail of the inclined baffle gradually expands outward.

[0019] Optionally, the limiting device also includes a vibration damping assembly; the vibration damping assembly is installed on the surface of the limiting baffle close to the inner support body; the vibration damping assembly includes a vibration damping spring and a vibration damping pad; the vibration damping spring is installed on the straight baffle, the vibration damping pad is installed on the inclined baffle, and a square blind hole is provided on the vibration damping pad; a third assembly hole is also provided on the vibration damping pad, and the third assembly hole is located in the square blind hole.

[0020] Optionally, the inner support body comprises a plurality of inner support assemblies connected end to end; the plurality of inner support assemblies are combined to form a ring; each inner support assembly is provided with a plurality of sliders; the sliders and locking assemblies are in one-to-one correspondence with the slide grooves;

[0021] The mounting base includes a plurality of base assemblies connected end to end, and the plurality of base assemblies are assembled to form a ring;

[0022] Anti-slip patterns are arranged on the outer peripheral surface of the inner support body.

[0023] In a second aspect, a safety tire is provided, comprising a carcass and the inner support mechanism described in any one of the first aspects; the carcass is mounted on a rim and wraps the inner support mechanism therein.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] After a tire burst, the present invention retains the advantages of the traditional inner support, replacing the original pneumatic tire to provide support for the vehicle. At the same time, after the inner support body contacts the ground, it tilts in a short time. The tilted and rolling inner support body can provide a correction force toward the inside of the vehicle, thereby effectively reducing the lateral force generated by the vehicle after the tire burst, reducing the risk of loss of control after the tire burst, and ensuring driving safety; in addition, if the vehicle has a tire burst while turning, the rapidly tilting inner support body can reduce the impact of insufficient steering or excessive steering caused by the tire burst; if the vehicle has a tire burst under low-speed straight-ahead conditions, the rapidly tilting inner support body can significantly reduce the vehicle's trajectory deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a cross-sectional view of the inner support structure of the present invention installed as a whole inside the tire under standard tire pressure conditions;

[0027] Figure 2 is a side view of the inner support body of the present invention;

[0028] Figure 3 is a schematic diagram of the three-dimensional structure of the mounting base of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the limit baffle of the present invention;

[0030] Figure 5 It is a schematic diagram of the connection between the slider and the locking assembly of the present invention;

[0031] Figure 6 This is a cross-sectional view of the present invention after the inner support body contacts the ground and tilts under zero-pressure working conditions;

[0032] Figure 7 Schematic diagram of force analysis of the inner support body of the second embodiment of the present invention during use;

[0033] Figure 8 3 is a schematic diagram showing a comparison of force analysis of the inner support body of the third embodiment of the present invention during use.

[0034] Markings in the figure are: 100 is the rim, 200 is the carcass, 300 is the ground, 1 is the mounting base, 11 is the slide groove, 12 is the positioning hole, 13 is the ball bearing, 2 is the inner support body, 21 is the small end face, 22 is the large end face, 3 is the slider, 31 is the first assembly hole, 4 is the locking assembly, 41 is the pin, 42 is the telescopic spring, 43 is the spring mounting seat, 44 is the second assembly hole, 5 is the limit baffle, 51 is the straight baffle, 52 is the inclined baffle, 6 is the vibration reduction assembly, 61 is the vibration reduction spring, 62 is the vibration reduction pad, 63 is the square blind hole, and 64 is the third assembly hole. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. cited in the invention are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0037] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0038] Example 1

[0039] like Figure 1-Figure 3 and Figure 6As shown, an inner support body mechanism of a safety tire is provided, comprising a rim 100 , a mounting base 1 , an inner support body 2 and a locking assembly 4 .

[0040] The mounting base 1 is mounted on the outer circumference of the rim 100; a slide groove 11 extending toward the end face of the mounting base 1 is provided on the outer circumference of the mounting base 1; the bottom of the slide groove 11 is arc-shaped and both ends are bent toward the axis of the mounting base 1; the inner support body 2 and the mounting base 1 are arranged inside and outside, and the inner support body 2 is slidably connected to the slide groove 11 through a slider 3; the slider 3 is mounted on the inner support body 2.

[0041] The outer diameters of the two end faces of the inner support body 2 are different. When the rim 100 is installed on a vehicle, the large end face 22 of the inner support body 2 faces the outside of the vehicle, and the small end face 21 faces the inside of the vehicle. The vehicle can be a car or other three-wheeled or multi-wheeled traveling body; the inner surface of the inner support body 2 is sleeved on the outer peripheral surface of the mounting base 1, and the two end faces of the inner support body 2 are both annular structures, and the outer diameters of the two end faces of the inner support body 2 are different.

[0042] The locking assembly 4 is provided on the slider 3. When the locking assembly 4 is in the locked state, the inner support body 2 and the mounting base 1 remain relatively stationary. When the vehicle has a tire burst, the locking assembly 4 is passively in the unlocked state, and the inner support body 2 slides along the bottom of the slide groove 11 to tilt the inner support body 2 and provide a correction force toward the inside of the vehicle. That is, when the locking assembly 4 is in the unlocked state, the inner support body 2 can slide along the slide groove 11 under the action of external force. When the locking assembly 4 is in the locked state, the inner support body 2 is limited to the specified position of the slide groove 11.

[0043] After a tire burst, the air pressure of the safety tire carcass 200 drops instantly, and the bottom of the large end surface 22 of the inner support body 2 first contacts the ground 300. Due to the force of the ground 300, the inner support body 2 tilts toward the inside of the vehicle, causing the locking of the locking assembly 4 to fail. The locking assembly 4 is in an unlocked state, and the inner support body 2 slides along the slide groove 11. The inner support body 2 continues to tilt until it reaches the set maximum tilt angle. When the inner support body 2 tilts, the outer peripheral surface of the inner support body 2 contacts the ground 300 through the carcass 200, thereby providing support force and inward correction force for the vehicle.

[0044] After a tire blowout, the inner support body 2 retains the advantages of traditional inner support and can replace the original pneumatic tire to provide support to the vehicle. At the same time, after the inner support body 2 contacts the ground 300, it tilts in a short time to provide a correction force toward the inside of the vehicle, thereby effectively reducing the risk of loss of control after a tire blowout and ensuring driving safety.

[0045] In addition, if the vehicle has a tire blowout while turning, the rapidly tilting inner support body 2 can reduce the impact of understeering or oversteering caused by the tire blowout; if the vehicle has a tire blowout while driving straight at low speed, the rapidly tilting inner support body 2 can significantly reduce the trajectory of the vehicle deviating from the original driving direction.

[0046] In order to ensure the sliding fit between the inner support body 2 and the mounting base 1 , the facing surfaces of the mounting base 1 and the inner support body 2 are both arc-shaped surfaces, and the curvature of the arc-shaped surfaces is consistent with the curvature of the sliding groove 11 .

[0047] Example 2

[0048] The difference between the second embodiment and the first embodiment is that, on the basis of retaining the first embodiment, Figure 7 As shown, in the axial cross-sectional direction of the inner support body 2 , the outer peripheral surface for connecting the small end surface 21 and the large end surface 22 is in a straight line shape.

[0049] When the inner support body 2 is tilted to the maximum tilt angle, the line between the edge of the large end face 22 and the edge of the small end face 21 of the inner support body 2 of the ground portion is parallel to the ground 300, and the correction force F provided by the inner support body is L The calculation of is as follows:

[0050] like Figure 7 As shown, point O is the center of mass of the inner support body 2, and the edge of the large end surface 22 of the inner support body 2 and the edge of the small end surface 21 of the inner support body 2 intersect at point P1. At this time, the inner support body 2 is equivalent to a Figure 7 In the cone shown, P1 is the top of the cone, and a perpendicular line L1 to the ground 300 is drawn through P1. The distance from the center of mass O to L1 is R1. The inner support body 2 is in contact with the ground 300 and rotates around L1, which can be simplified as the center of mass O of the inner support body 2 rotating around L1, and the angular velocity is recorded as ω1; therefore, the inner support body 2 generates a centripetal force due to the circular motion, that is, a correction force.

[0051] The correction force F provided by the inner support body L for:

[0052]

[0053] Among them, m is the mass of the inner support body 2, and v is the speed of the center of mass of the inner support body 2; when m and v remain unchanged, the magnitude of the correction force is related to the distance R1 from the center of mass O to the axis L1.

[0054] Reference Figure 7 , the distance R1 from the center of mass O to the axis L1 is:

[0055]

[0056] Wherein, h is the height of the center of mass from the ground 300, and θ is the maximum tilt angle set for the inner support body 2.

[0057] Substituting formula (2) into formula (1), we can see that the correction force F provided by the inner support body is L for:

[0058]

[0059] Example 3:

[0060] The difference between the third embodiment and the first embodiment is that, on the basis of retaining the first embodiment, Figure 1 and Figure 8 As shown, in the axial cross-sectional direction of the inner support body 2, the outer peripheral surface for connecting the small end face 21 and the large end face 22 is in the shape of an arc bent outward; by adjusting the arc curvature of the outer peripheral surface of the inner support body 2 in the axial cross-sectional direction, the magnitude of the correction force provided by the inner support body 2 can be changed.

[0061] Specifically, the curvature of the arc presented by the outer peripheral surface of the inner support body 2 in the axial cross-section direction is k. When the inner support body 2 reaches the maximum tilt angle, as shown in FIG. Figure 8 As shown, the edge of the large end face 22 and the edge of the small end face 21 of the inner support body intersect at point P2. At this time, the inner support body 2 is equivalent to a Figure 8 In the large cone shown, P2 is the top of the cone, and a perpendicular line L2 to the ground 300 is drawn through P2. The distance from the center of mass O to L2 is R2, and the horizontal width of the outer peripheral surface of the inner support body 2 is W. The inner support body 2 is in contact with the ground 300 and rotates around the perpendicular line L2. It can be simplified as the center of mass O of the inner support body 2 rotating around L2, and the angular velocity is recorded as ω2.

[0062] The curvature of the arc presented by the outer peripheral surface of the inner support body 2 in the axial cross-section direction is k:

[0063]

[0064] Wherein, r is the radius of curvature of the arc presented by the peripheral surface of the inner support body in the axial cross-section direction;

[0065] The height of the center of mass of the inner support body 2 has changed, and the height of the center of mass O of the inner support body 2 has increased by Δh:

[0066]

[0067] Wherein, Δh is the height increase of the center of mass O of the inner support body 2;

[0068] R2 is a distance longer than R1. In a right triangle with P1P2 as the hypotenuse, the difference ΔR between R2 and R1 can be calculated as:

[0069]

[0070] Then the distance R2 from the center of mass O to the axis L2 is:

[0071]

[0072] The correction force F provided by the inner support body 2 L for:

[0073]

[0074] Among them, m is the mass of the inner support body 2, v is the speed of the center of mass of the inner support body 2, θ is the maximum inclination angle of the inner support body 2, and h is the height of the center of mass of the inner support body 2 from the ground 300.

[0075] By adjusting the arc curvature k of the outer peripheral surface of the inner support body 2 in the axial cross-section direction, the magnitude of the correction force provided by the inner support body 2 is changed.

[0076] Of course, in some other embodiments, the magnitude of the correction force can also be changed by adjusting the mass of the inner support body 2 and the maximum tilt angle of the inner support body 2. However, since the mass and the maximum tilt angle of the inner support body 2 are counterbalanced by components of the safety tire such as the rim 100, the adjustment of the magnitude of the correction force is very limited.

[0077] Example 4:

[0078] like Figure 5 As shown, the difference between Example 4 and Example 1 is that, on the basis of retaining Example 1, the locking assembly 4 is located in the slider 3, and the locking assembly 4 is a telescopic spring locating pin; one end of the slider 3 is slidably connected to the slide groove 11, and the other end is connected to the inner surface of the inner support body 2, and the slider 3 slides synchronously with the inner support body 2; the spring locating pin is located in the slider 3, and the pin 41 extends out of the slider 3 in the initial state; the bottom of the slide groove 11 is provided with a locating hole 12 facing the axis of the mounting base 1; the head of the spring locating pin is adapted to the locating hole 12, and the locating hole 12 is a blind hole. The depth of the locating hole 12 needs to be designed and determined based on expert experience, so that after the inner support body 2 is tilted, the head can be separated from the locating hole 12; when the locking assembly 4 is in the locked state, the head of the spring locating pin is inserted into the locating hole 12.

[0079] Specifically, if Figure 5As shown, the spring locating pin includes a pin 41, a telescopic spring 42 and a spring mounting seat 43. The head of the pin 41 is hemispherical, one end of the telescopic spring 42 is connected to the tail of the pin 41, and the other end is connected to the spring mounting seat 43; the end of the slider 3 close to the inner support body 2 is provided with a first assembly hole 31; the spring mounting seat 43 is provided with a second assembly hole 44 adapted to the first assembly hole 31; the inner surface of the inner support body 2 is screwed into the first assembly hole 31 and the second assembly hole 44 by a screw rod, and the telescopic spring 42 is fixed in the slider 3 through the spring mounting seat 43, and is screwed into the first assembly hole 31 and the second assembly hole 44 by a screw rod, which can not only connect the slider 3 and the inner support body 2, but also cooperate with the spring mounting seat 43 to fix the telescopic spring 42.

[0080] In the initial state, the pin 41 corresponds to the position of the positioning hole 12, and the head of the pin 41 is located in the positioning hole 12 to achieve positioning. At this time, the telescopic spring 42 is in a natural extension state. When the tire bursts, the inner support body 2 is tilted by a strong force, and the head of the pin 41 is separated from the positioning hole 12. Under the action of the bottom of the slide groove 11, the head of the pin 41 is retracted into the inside of the slider 3 and moves synchronously with the sliding of the slider 3. At this time, the telescopic spring 42 is in a compressed state.

[0081] Example 5

[0082] like Figure 1 and 3 As shown, the difference between Example 5 and Example 1 is that, on the basis of retaining Example 1, the slider 3 is a cylinder, and each side wall of the slide 11 is provided with at least one row of balls 13, and the balls 13 in the same row are also distributed in an arc; as an optional option, the two side walls of the slide 11 are each provided with a row of balls 13; specifically, a ball mounting groove is provided on the side wall of the slide 11, and several balls 13 are installed in the ball mounting groove, and each ball 13 can rotate independently, and the installation method of the ball 13 and the ball mounting groove can refer to the existing technology; the size and number of the balls 13 can be adjusted according to actual needs, and the setting of the balls 13 can reduce the friction when the outer peripheral surface of the slider 3 contacts the balls 13, and at the same time can allow the inner support body 2 to be tilted into place at a faster speed, that is, tilted to the maximum tilt angle.

[0083] Example 6

[0084] like Figure 3As shown, the difference between Example 6 and Example 1 is that, on the basis of retaining Example 1, there are multiple slide grooves 11 and they are evenly distributed around the rim 100 in a circular form; the slider 3 and the locking assembly 4 both correspond to the slide grooves 11 one by one; when the side walls of the slide groove 11 are projected to the bottom of the slide groove 11, the side walls of the slide groove 11 are inwardly concave arcs; that is, when facing the bottom of the slide groove 11, the cross-sectional shape of the slide groove 11 is an "I" shape, and both side walls of the slide groove 11 are concave into the slide groove 11, so that there is enough deflection space when the slider 3 is in different positions during the rotation of the tire.

[0085] This embodiment provides an optional option, in which the number of the slide grooves 11 is 12, and the number of the sliders 3 and the locking components 4 is also 12 respectively. The number of the slide grooves 11, the sliders 3 and the locking components 4 can be adjusted according to needs.

[0086] Example 7

[0087] like Figure 1 and 4 As shown, the difference between Example 7 and Example 1 is that, on the basis of retaining Example 1, both ends of the slide groove 11 extend to the end faces of the mounting base 1, and limiting devices are provided on both end faces of the mounting base 1 to prevent the slider 3 from completely sliding out of the slide groove 11.

[0088] Specifically, the limiting device includes a limiting baffle 5, and the limiting baffle 5 includes a straight baffle 51 and an inclined baffle 52; the straight baffle 51 is installed on the mounting base 1 and blocks the end of the slide groove 11; the head of the inclined baffle 52 is connected to the tail of the straight baffle 51; the tail of the inclined baffle 52 gradually expands outward; the straight baffle 51 is installed in contact with the end face of the mounting base 1, and the angle of the inclined baffle 52 can be designed according to actual needs; under the action of the limiting baffle 5, the slider 3 and the inner support body 2 can be prevented from sliding out, thereby limiting the maximum tilt angle of the inner support body 2.

[0089] More specifically, the limiting device also includes a vibration damping component 6; the vibration damping component 6 is installed on the surface of the limiting baffle 5 close to the inner support body 2; the vibration damping component 6 includes a vibration damping spring 61 and a vibration damping pad 62; the vibration damping spring 61 is installed on the straight baffle 51, and the vibration damping pad 62 is installed on the inclined baffle 52, and a square blind hole 63 is provided on the vibration damping pad 62; a third assembly hole 64 is also provided on the vibration damping pad 62, and the third assembly hole 64 is located in the square blind hole 63; the setting of the square blind hole 63 can provide a certain deformation margin space for the vibration damping pad 62, and the third assembly hole 64 is used for the installation of the vibration damping pad 62 and the inclined baffle 52. The installation method of the vibration damping spring 61 and the straight baffle 51 can be the existing technology.

[0090] In the initial state, the vibration damping pad 62 and the vibration damping spring 61 are both in a naturally extended state. After the tire bursts, the slider 3 and the inner support body 2 tilt together. Before contacting the limit baffle 5, the slider 3 contacts the vibration damping spring 61, and the large end surface 22 of the inner support body contacts the vibration damping pad 62, which reduces both the buffering and the noise caused by the collision. At this time, the vibration damping pad 62 and the vibration damping spring 61 are both in a compressed state.

[0091] Example 8

[0092] like Figure 2 and 3 As shown, the difference between Example 8 and Example 1 is that, on the basis of retaining Example 1, the inner support body 2 includes a plurality of inner support assemblies connected end to end; the plurality of inner support assemblies are combined to form a ring; each inner support assembly is provided with a plurality of sliders 3; the sliders 3 and the locking components 4 are in one-to-one correspondence with the slide grooves 11; the mounting base 1 includes a plurality of base assemblies connected end to end, and the plurality of base assemblies are combined to form a ring; the mounting base 1 and the inner support body 2 are both splicing structures, which can reduce the difficulty of installation.

[0093] As an optional option, there are three internal support assemblies, and each of them is an arc-shaped structure with a central angle of 120°. The splicing position of each internal support assembly is provided with a hole, and two adjacent internal support assemblies can be connected by screw assembly. At the same time, four sliders 3 are provided on each internal support assembly, a total of 12 sliders, and the 12 sliders are evenly distributed on the internal support body 2; a locking component 4 is provided in each slider 3.

[0094] The number of the base assemblies may also be three, and each base assembly is an arc-shaped structure with a central angle of 120°, and each base assembly is provided with four slide grooves 11 .

[0095] When the limit baffles 5 are installed at both ends of the slide groove 11, the limit baffles 5 can be an annular whole, or can be set to 12 baffle assemblies, that is, all the baffle assemblies are connected end to end to form an annular whole, and each baffle assembly is an arc structure with a central angle of 30°; each baffle assembly is provided with a vibration damping pad 62 and two vibration damping springs 61.

[0096] In some other embodiments, anti-slip grooves are further provided on the outer peripheral surface of the inner support body; the anti-slip grooves can prevent relative sliding between the inner support body 2 and the inner surface of the tire body 200, or the ground 300, thereby further improving the correction effect of vehicle deviation.

[0097] The working process of the present invention is:

[0098] Under standard tire pressure conditions, the inner support body 2 does not contact the ground 300, and the tire relies on the gas inside the tire to support the vehicle's travel. The performance is no different from that of a traditional radial tire. At this time, the spring locating pin and the locating hole 12 cooperate with each other to fix. During normal driving of the vehicle, the various mechanisms will not move relative to each other, ensuring the stability of the inner support mechanism.

[0099] When a vehicle has a tire blowout, the air pressure inside the tire drops instantly, and the bottom of the large end surface 22 of the inner support body 2 first contacts the ground 300. Under the action of the force, the inner support body 2 tilts, and the spring locating pin disengages from the locating hole 12. The slider 3 moves rapidly along the slide groove 11 under the action of the ball 13. The slider 3 first contacts the shock-absorbing spring 61, buffering part of the energy. Then the large end surface 22 of the inner support body 2 contacts the shock-absorbing pad 62, and the speed drops significantly, and finally hits the limit baffle 5. The outer peripheral surface of the inner support body 2 contacts the ground 300 through the tire carcass 200, providing support force and inward correction force for the vehicle.

[0100] Example 9:

[0101] A safety tire comprises a carcass 200 and an inner support body mechanism described in any one of Examples 1 to 8; the carcass 200 is mounted on the rim 100 and wraps the inner support body mechanism inside; the carcass 200 is inflatable, and when the air pressure of the carcass 200 is normal, the inner support body does not contact the inner surface of the carcass 200 or the ground 300. When the air pressure of the carcass 200 drops to zero, a certain relative sliding will occur between the inner support body main body 2 and the inner surface of the carcass 200, or the ground 300, thereby affecting the stability of the entire vehicle. Certain anti-slip measures can be added to the ground contact surface of the inner support body main body 2. Even when the tire blowout is relatively severe and the surface of the carcass 200 is damaged, the relative friction between the ground contact area of ​​the inner support body main body 2 and the ground 300 can be increased, thereby increasing a certain adhesion and improving driving stability.

[0102] The detailed structure of the inner support mechanism can be found in the above embodiments and will not be described in detail here.

[0103] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An inner support structure of a safety tire, comprising a rim (100), characterized in that: It comprises a mounting base (1), an inner support body (2) and a locking assembly (4); The mounting base (1) is mounted on the outer peripheral surface of the rim (100); a slide groove (11) extending toward the end surface thereof is provided on the outer peripheral surface of the mounting base (1); the bottom of the slide groove (11) is arc-shaped and both ends are bent toward the axis of the mounting base (1); The outer diameters of the two end faces of the inner support body (2) are different. When the rim (100) is mounted on a vehicle, the large end face (22) of the inner support body (2) faces the outside of the vehicle, and the small end face (21) faces the inside of the vehicle. The inner support body (2) and the mounting base (1) are arranged inside and outside, and the inner support body (2) is slidably connected to the slide groove (11) via a slider (3). The locking assembly (4) is arranged on the slider (3). When the locking assembly (4) is in a locked state, the inner support body (2) and the mounting base (1) remain relatively stationary. When the vehicle has a tire burst, the locking assembly (4) is passively in an unlocked state, and the inner support body (2) slides along the bottom of the slide groove (11) to tilt the inner support body (2), thereby providing a correction force toward the inside of the vehicle and a support force toward the ground (300).

2. The inner support structure of the safety tire according to claim 1, characterized in that: In the axial cross-sectional direction of the inner support body (2), the outer peripheral surface for connecting the small end surface (21) and the large end surface (22) is in a straight line shape or an outwardly bent arc shape; In the axial cross-sectional direction of the inner support body (2), when the outer peripheral surface for connecting the small end surface (21) and the large end surface (22) presents an arc shape bent outward, the magnitude of the correction force provided by the inner support body (2) can be changed by adjusting the arc curvature presented by the outer peripheral surface of the inner support body (2) in the axial cross-sectional direction.

3. The inner support structure of the safety tire according to claim 1, characterized in that: The locking assembly (4) is located in the slider (3), and the locking assembly (4) is a telescopic spring locating pin; one end of the slider (3) is slidably connected to the slide groove (11), and the other end is connected to the inner surface of the inner support body (2); the spring locating pin is located in the slider (3), and in the initial state, the head thereof extends out of the slider (3); the bottom of the slide groove (11) is provided with a locating hole (12) facing the axis of the mounting base (1); the head of the spring locating pin is adapted to the locating hole (12), and when the locking assembly (4) is in the locked state, the head of the spring locating pin is inserted into the locating hole (12).

4. The inner support structure of the safety tire according to claim 3, characterized in that: The slider (3) is provided with a first assembly hole (31) at the end close to the inner support body (2); the spring positioning pin comprises a pin (41), a telescopic spring (42) and a spring mounting seat (43), one end of the telescopic spring (42) is connected to the tail of the pin (41), and the other end is connected to the spring mounting seat (43); the spring mounting seat (43) is provided with a second assembly hole (44) adapted to the first assembly hole (31); the inner surface of the inner support body (2) is screwed into the first assembly hole (31) and the second assembly hole (44) by a screw rod.

5. The inner support structure of the safety tire according to claim 1, characterized in that: The slider (3) is a cylinder, and each side wall of the slide groove (11) is provided with at least one row of balls (13).

6. The inner support structure of the safety tire according to claim 1, characterized in that: There are multiple slide grooves (11) and they are evenly distributed around the rim (100) in a circular manner; the sliders (3) and the locking components (4) correspond to the slide grooves (11) one by one; when the side walls of the slide grooves (11) are projected to the bottom of the slide grooves (11), the side walls of the slide grooves (11) are inwardly concave arcs.

7. The inner support structure of the safety tire according to claim 1, characterized in that: Both ends of the slide groove (11) extend to the end surface of the mounting base (1), and limiting devices are provided on both end surfaces of the mounting base (1) to prevent the slider (3) from completely sliding out of the slide groove (11); The limiting device comprises a limiting baffle (5); the limiting baffle (5) comprises a straight baffle (51) and an inclined baffle (52); the straight baffle (51) is mounted on the mounting base (1) and blocks the end of the slide groove (11); the head of the inclined baffle (52) is connected to the tail of the straight baffle (51); the tail of the inclined baffle (52) gradually expands outwards.

8. The inner support structure of the safety tire according to claim 7, characterized in that: The limiting device further comprises a vibration damping assembly (6); the vibration damping assembly (6) is mounted on the surface of the limiting baffle (5) close to the inner support body (2); the vibration damping assembly (6) comprises a vibration damping spring (61) and a vibration damping pad (62); the vibration damping spring (61) is mounted on the straight baffle (51), the vibration damping pad (62) is mounted on the inclined baffle (52), and a square blind hole (63) is provided on the vibration damping pad (62); a third assembly hole (64) is also provided on the vibration damping pad (62), and the third assembly hole (64) is located in the square blind hole (63).

9. The inner support structure of the safety tire according to claim 1, characterized in that: The inner support body (2) comprises a plurality of inner support assemblies connected end to end; the plurality of inner support assemblies are combined to form a ring; each inner support assembly is provided with a plurality of sliders (3); the sliders (3) and the locking components (4) are in one-to-one correspondence with the slide grooves (11); The mounting base (1) comprises a plurality of base assemblies connected end to end, wherein the plurality of base assemblies are assembled to form a ring; Anti-slip patterns are arranged on the outer peripheral surface of the inner support body.

10. A safety tire, characterized by: The invention comprises a carcass (200) and an inner support structure according to any one of claims 1 to 9; the carcass (200) is mounted on a rim (100) and wraps the inner support structure therein.

Images