CN112373249B - Explosion-proof wheel hub with buffer structure - Google Patents
Explosion-proof wheel hub with buffer structure Download PDFInfo
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- CN112373249B CN112373249B CN202011349173.6A CN202011349173A CN112373249B CN 112373249 B CN112373249 B CN 112373249B CN 202011349173 A CN202011349173 A CN 202011349173A CN 112373249 B CN112373249 B CN 112373249B
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- Prior art keywords
- air bag
- rim
- tire
- hub
- pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/01—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency
- B60C17/02—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency inflated or expanded in emergency only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
- B60C2017/068—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient comprising springs, e.g. helical springs
Abstract
The invention discloses an explosion-proof hub with a buffer structure, which comprises a rim and a spoke connected in the rim, wherein a tire is suitable for being installed on the rim, and the explosion-proof hub also comprises: a resilient device, comprising: a mechanical spring, one end of which is adapted to be coupled to the rim and the other end of which is adapted to extend towards the inner side wall of the tyre, the elastic means being configured such that the mechanical spring, when compressed, has a tendency to move towards the direction of the tyre; an airbag assembly comprising: the tire lifting device comprises an air bag, a gas generating agent filled in the air bag and a trigger which is in contact with the gas generating agent and is used for triggering the gas generating agent, wherein the air bag is suitable for being installed on a wheel rim and is arranged in the air bag, and when the pressure borne by a wheel hub reaches a threshold pressure, the trigger triggers the gas generating agent to expand the air bag so as to lift up a tire; wherein the resilient means is at a higher height in the non-stressed state than in the non-inflated state of the airbag module.
Description
Technical Field
The invention relates to the technical field of hubs, in particular to an anti-explosion hub with a buffer structure and an anti-explosion tire.
Background
The phenomenon that a so-called tire burst of an automobile breaks and loses internal air within a very short time is often caused by a burst of tires in a highway accident. The tire loses the supporting force due to the sudden drop of the air pressure of the wheel at the moment of tire burst, the running stability of the automobile disappears instantly, and when the speed of the automobile reaches 120km/h, the accident death rate caused by the tire burst of the front drive is close to 100 percent. Therefore, some emergency measures are needed to keep a certain stability at the moment when the vehicle runs at a high speed and a tire is burst, so as to give a certain reaction time to a driver to control the vehicle and complete braking. CN211416839U discloses a tire burst emergency hub, which is characterized in that an emergency pile is welded inside a rim, so that a top block is in contact with the ground through a tire after tire burst to play a supporting role; however, in practical situations, the air pressure inside the tire suddenly drops, and the hub is difficult to avoid contacting the ground, so that the stress mode of the hub is changed essentially. Under the original air pressure, the inner ring of the wheel hub, namely the wheel rim, is subjected to uniform surface load, and the position with the maximum stress is positioned at the bolt hole; when the tire loses the internal air pressure, the hub is approximately in rigid contact with the ground, the lowest side of the hub is pressed, the longitudinal compression tendency is generated, and the transverse stretching tendency is generated, so that the hub is easy to deform or crush. Therefore, the deformation of the wheel hub is difficult to avoid only by adopting a mechanical elastic support method, and on the contrary, stress can be concentrated, so that the deformation possibility of the wheel hub is increased, and the vehicle is out of control.
Disclosure of Invention
In view of the above-mentioned problems and needs, the present invention provides an explosion-proof hub with a buffer structure, which can achieve the above technical objectives and bring other technical effects by adopting the following technical features.
The invention provides an explosion-proof hub with a buffer structure, which comprises a rim and a spoke connected inside the rim, wherein a tire is suitable for being installed on the rim,
further comprising:
a resilient device, comprising: a mechanical spring, one end of which is adapted to be coupled to the rim and the other end of which is adapted to extend towards the inner sidewall of the tyre, the elastic means being configured such that the mechanical spring, when compressed, has a tendency to move towards the tyre;
an assembly, comprising: the tire lifting device comprises an air bag, a gas generating agent filled in the air bag and a trigger contacted with the gas generating agent for triggering the gas generating agent, wherein the air bag is suitable for being installed on a wheel rim and is arranged in the air bag, and when the pressure borne by a wheel hub reaches a threshold pressure, the trigger triggers the gas generating agent to expand the air bag so as to lift up a tire; because of the high temperature inside the tire, the gas generant must have a certain high temperature resistance to avoid spontaneous combustion in design.
Wherein the resilient means is at a higher height in the non-stressed state than in the non-inflated state of the air-bag module.
In the technical scheme, after the tire bursts, the elastic device firstly bears the pressure from the tire, and in the process, the mechanical spring is deformed under the compression and gives a supporting force to the inner side wall of the tire; when the pressure born by the hub reaches the threshold pressure, the trigger triggers the gas generating agent to expand the air bag so as to lift up the inner side wall of the tire and form an elastic air film layer between the hub and the ground; through setting up resilient means and gasbag subassembly can be so that flexible contact between wheel hub and the ground, prevent that wheel hub from taking place to warp or conquassation, make the vehicle can maintain the stability of self after taking place to blow out, this wheel hub response is sensitive moreover, and the structure is reliable.
In addition, the hub according to the present invention may further have the following features:
in one example of the present invention, the elastic means further comprises:
a guide rod disposed inside the mechanical spring, and having one end detachably coupled with the rim and the other end extending toward the tire;
the guide rod is of a telescopic structure and can guide the mechanical spring to synchronously extend and retract along the radial direction of the hub.
In the inventionIn one example of (a), the guide bar includes: gas spring, wherein the initial pressure P of the gas inside the gas spring t Standard atmospheric pressure P and initial pressure P of the gas inside the tyre L The three satisfy the following conditions: p < P t ＜P L 。
In one example of the present invention, the elastic means includes a plurality of elastic means, and is provided at intervals along a circumferential direction of the rim.
In one example of the invention, the mounting position of the elastic means at least partially coincides with the projection position of the spoke onto the rim along the radial direction of the hub.
In one example of the present invention, the airbag module further includes:
a flexible housing detachably coupled to the rim and positioned within the flexible housing to define a mounting cavity open at an upper end;
wherein the air bag is mounted within the mounting cavity.
In one example of the present invention, the method further comprises:
a baffle disposed at the open end of the flexible housing;
when the air bag expands, the baffle is jacked to abut against the inner side wall of the tire.
In one example of the present invention,
an installation groove is formed along the circumferential direction of the opened end, and the baffle is suitable for being clamped in the installation groove;
when the air bag assembly is pressed, the air bag expands to deform the flexible shell, so that the baffle is ejected out of the installation cavity by the air bag.
In one example of the present invention, the airbag module further includes:
a pressure sensor coupled to the elastic device and coupled to the trigger;
when the pressure sensor detects that the pressure borne by the elastic device reaches a pressure threshold value, the trigger is triggered by the pressure sensor, so that the air bag is expanded under the action of the gas generating agent.
In one example of the present invention, the air bag module is arranged along a circumferential direction of the rim.
Compared with the prior art, the invention has the following beneficial effects:
1. the emergency air bag and the elastic buffering trigger device are arranged on the side wall of the rim, so that the vehicle can maintain original stability to a certain extent when the tire burst happens until the vehicle finishes deceleration and sudden stop, and the vehicle is given certain self-repairing capability after the tire burst happens in a high-speed driving state.
2. The elastic buffer trigger device consists of an air spring and a mechanical spring and has better bearing capacity. Meanwhile, when the vehicle normally operates, the tire is in a normal pressure state, the tire pressure is higher than the internal pressure of the air spring, and the air spring is compressed and contracted, so that the elastic buffering trigger device can be effectively prevented from contacting the inner wall of the tire when the vehicle normally runs, and the whole self-repairing system is more stable when not in work.
3. The emergency air bag can provide partial support for the vehicle after the inflation is completed, the working pressure of the elastic buffer device is reduced, the stress of a single spoke at the working position is reduced, and the service life of each part and the hub in the limit working state after the tire burst is prolonged.
4. The original stress state of the hub can be partially restored after the emergency air bag works normally, and the hub is prevented from being in rigid contact with the ground or the effective stress surface of the hub is greatly reduced, so that the hub is prevented from deforming or collapsing.
The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.
FIG. 1 is a schematic structural view of a hub according to an embodiment of the present invention;
FIG. 2 is a plan expanded view of a hub according to an embodiment of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic diagram of an embodiment of a resilient device according to the present invention;
FIG. 5 is a schematic illustration of an airbag assembly in a non-inflated state in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of an airbag module in an inflated state according to an embodiment of the present invention.
List of reference numerals:
a hub 100;
a wheel disc 10;
a rim 20;
a clip groove 21;
a resilient means 30;
a mechanical spring 31;
a guide rod 32;
a support plate 33;
a pressure sensor 34;
an airbag module 40;
an air bag 41;
a gas generating agent 42;
a trigger 43;
a flexible housing 44;
a projection 441;
a mounting groove 442;
a mounting cavity 443;
a baffle 45.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
A explosion proof wheel hub 100 with a cushion structure according to the present invention, as shown in fig. 1 and 2, includes a rim 20 and a wheel disc 10 coupled inside the rim 20, wherein a tire is adapted to be mounted on the rim 20,
further comprising:
elastic means 30 comprising: a mechanical spring 31, one end of said mechanical spring 31 being adapted to be coupled to said rim 20 and the other end thereof being adapted to extend towards the inner sidewall of said tyre, said elastic means 30 being configured so that said mechanical spring 31, when compressed, has a tendency to move towards said tyre;
an airbag module 40, comprising: an air bag 41, a gas generating agent 42 filled in the air bag 41 and a trigger 43 which is in contact with the gas generating agent 42 and is used for triggering the gas generating agent 42, wherein the air bag 41 is suitable for being installed on a wheel rim 20 and is arranged in the air bag 41, and when the pressure born by the wheel hub 100 reaches a threshold pressure, the trigger 43 triggers the gas generating agent 42 to expand the air bag 41 so as to lift up the tire;
wherein the height of the elastic means 30 in the non-stressed state is higher than the height of the airbag module 40 in the non-inflated state.
Specifically, when the tire is punctured, the elastic device 30 first receives pressure from the tire, and in the process, the mechanical spring 31 is deformed under pressure and gives a supporting force to the inner side wall of the tire; when the pressure borne by the hub 100 reaches a threshold pressure, the trigger 43 triggers the gas generating agent 42 to expand the air bag 41, so as to lift up the inner side wall of the tire, and an elastic air film layer is formed between the hub 100 and the ground; through the arrangement of the elastic device 30 and the airbag module 40, the wheel hub 100 can be in flexible contact with the ground, the wheel hub 100 is prevented from deforming or collapsing, the vehicle can maintain the stability of the vehicle after the tire burst occurs, and the wheel hub 100 is sensitive in response and reliable in structure.
It should be noted that gas generant 42 may be a combustion agent and trigger 43 may be used to ignite an igniter of the combustion agent, for example, trigger 43 may ignite gas generant 42 to produce N2 or release compressed nitrogen from a gas reservoir to fill bladder 41.
It will be appreciated that the elastic means 30 in a compressed state has a compression limit height lower than the height of the bladder assembly 40 after inflation, so that the bladder assembly 40 can effectively support the tire.
In one example of the present invention, as shown in fig. 1 and 4, the elastic device 30 further includes:
a guide rod 32 disposed inside the mechanical spring 31 and having one end detachably coupled to the rim 20 and the other end extending toward the tire;
wherein, the guiding rod 32 is a telescopic structure capable of guiding the mechanical spring 31 to synchronously extend and retract along the radial direction of the hub 100;
that is, the guide rod 32 can guide the mechanical spring 31 in the elastic device 30, and the mechanical spring 31 is prevented from deflecting when being subjected to non-positive pressure to affect the buffer supporting function of the mechanical spring 31; and the guide rod 32 can also play a role of auxiliary support, under special conditions, after the tire bursts, if the tire collides with a sharp object, the instant impact force is larger, and the instant impact force may be larger than the limit elastic force of the mechanical spring 31, and under the condition that the mechanical spring 31 does not reach the limit elastic force, the guide rod 32 can play a role of hard support for the tire.
In one example of the present invention, the guide bar 32 includes: gas spring, wherein the initial pressure P of the gas inside the gas spring t Standard atmospheric pressure P and initial pressure P of the gas inside the tyre L The three satisfy the following conditions: p < P t ＜P L (ii) a This makes it possible to obtain a tire that is not punctured, due to the internal gas pressure P of the tire L Is greater than the initial pressure P of the gas in the gas spring t So that the air spring is in a compressed state, and once the tire burst occurs, the pressure of the air in the tire is instantaneously reduced to the external standard atmospheric pressure P, so that the air spring extends and lifts up to lift up the inner side wall of the tire; therefore, the occupied space of the elastic device 30 can be reduced, and the tire is prevented from being deformed under the external instant impact force and contacting with the elastic device 30 to cause hard contact; moreover, the gas spring is of the prior art and comprises a pressure cylinder, a piston rod, a piston and an inert gas or oil-gas mixture filled between the pressure cylinder and the piston, which has a minimum working position and a maximum working position, corresponding to the maximum and minimum stress limit positions of the mechanical spring 31, respectively, and which can be contracted along with the compression of the mechanical spring 31.
It should be noted that the initial pressure of the gas inside the gas spring is less than or equal to 2bar and the initial pressure P of the gas inside the tyre L ＞2bar。
When the tire is in a normal pressure state, the tire pressure is higher than the internal pressure of the air spring, and the air spring is compressed and contracted, so that the elastic device 30 can be effectively prevented from contacting the inner wall of the tire when the vehicle normally runs. When the tire burst happens, the pressure in the tire suddenly drops, the air spring rapidly restores to the working position and provides the supporting force together with the mechanical spring 31
It is worth mentioning that the guide bar 32 may also include: the structure of the mechanical spring 31 comprises a first cylinder body, a second cylinder body which can stretch into and retract from the first cylinder body, and elastic pieces which are arranged in the first cylinder body and the second cylinder body, so that synchronous stretching movement with the mechanical spring 31 can be realized.
In one example of the present invention, the upper end of the guide bar 32 is further provided with a support plate 33 so as to increase the contact area of the mechanical spring 31 with the inner sidewall of the tire.
In an example of the present invention, the elastic device 30 includes a plurality of elastic devices, and the elastic devices are arranged at intervals along the circumferential direction of the rim 20, and by arranging the plurality of elastic devices 30, the flexible force bearing area of the tire can be increased, so that the force bearing is more stable, and the safety of the hub 100 is improved.
In one example of the invention, the mounting position of the elastic means 30 at least partially coincides with the projection position of the wheel disc 10 on the rim 20 along the radial direction of the hub 100;
that is, the wheel disc 10 can support the elastic device 30 to a certain extent, so that the elastic device 30 can be supported stably and reliably;
it is further preferred that the mounting position of the elastic means 30 is entirely within the projected position of the wheel disc 10 on the wheel rim 20 in the radial direction of the wheel hub 100, so that the reliability of the support is stronger.
In one example of the present invention, as shown in fig. 5 and 6, the airbag module 40 further includes:
a flexible housing 44 detachably coupled to the rim 20 and defining a mounting cavity 443 with an open upper end within the flexible housing 44;
wherein the air bag 41 is mounted in the mounting cavity 443;
replacement of the air bag module 40 may be facilitated by removably coupling the flexible housing 44 to the rim 20.
In one specific example of the present invention, as shown in FIGS. 1-3,
a snap groove 21 is formed along a circumferential direction of the rim 20;
the flexible shell 44 is clamped in the clamping groove 21 through a protrusion 441;
when the wheel rim is used, the flexible shell 44 is inserted along the starting end of the clamping groove 21, the flexibility of the flexible shell 44 can be well attached to the surface of the wheel rim 20, and the flexible shell 44 can be conveniently connected with the wheel rim 20 through the mode that the protrusion 441 is matched with the clamping groove 21.
Of course, the present invention is not limited thereto, and the flexible housing 44 may be provided with the engaging groove 21 and the rim 20 may be provided with the protrusion 441.
The provision of the flexible housing 44 protects the air-bag module 40 by virtue of the open upper end of the flexible housing 44, so that the air-bag 41 is inflated only at the open end, thereby increasing the area of flexible support of the air-bag module 40. Preferably, the flexible housing 44 comprises a rubber member.
In one example of the present invention, as shown in fig. 5 and 6, the method further includes:
a flap 45, said flap 45 being provided at the open end of said flexible housing 44;
when the air bag 41 is expanded, the baffle 45 is jacked to abut against the inner side wall of the tire;
baffle 45 can increase the area of contact of gasbag subassembly 40 with the tire inside wall, can play the guard action to gasbag 41 through setting up baffle 45 moreover, avoids tire puncture back thorn thing to pierce gasbag 41, improves the stability and the reliability of gasbag subassembly 40.
Preferably, the baffle 45 is a metal piece.
In one example of the present invention,
a mounting groove 442 is formed along the circumferential direction of the open end, and the baffle 45 is suitable for being clamped in the mounting groove 442;
when the airbag module 40 is pressurized, the airbag 41 expands to deform the flexible casing 44, so that the flap 45 is ejected from the installation cavity 443 by the airbag 41;
that is, when the airbag module 40 is in the non-operating state, the airbag module is completely located in the flexible housing 44, and once the airbag module is expanded in operation, the airbag module moves in a predetermined direction (the direction of the open end of the mounting cavity 443), and the flexible housing 44 is a flexible member that is easy to deform, so that the flexible housing 44 is deformed first by the external force of the expansion, and the flap 45 is easily ejected from the mounting groove 442.
In one example of the present invention, as shown in fig. 1 and 4, the airbag module 40 further includes:
a pressure sensor 34 coupled to the elastic device 30 and coupled to the trigger 43;
when the pressure sensor 34 detects that the pressure applied to the elastic device 30 reaches a pressure threshold, the trigger 43 is triggered by the pressure sensor 34 to inflate the airbag 41 by the gas generating agent 42.
When the pressure born by the elastic device 30 reaches a pressure threshold value, the pressure sensor 34 is triggered, and the trigger 43 is triggered by the pressure sensor 34 to enable the air bag 41 to expand under the action of the gas generating agent 42;
that is, the elastic device 30 will press on the pressure sensor 34 after being deformed, and the pressure sensor 34 triggers the trigger 43 to ignite the gas generating agent 42 according to whether the pressure borne by the elastic device 30 reaches the pressure threshold value;
specifically, after the tire bursts, the elastic device 30 first receives pressure from the tire, in the process, the mechanical spring 31 is deformed under pressure and gives a supporting force to the inner side wall of the tire, in the process, the pressure sensor 34 detects the pressure of the elastic device 30, and when the pressure received by the wheel hub 100 reaches a threshold pressure, the control trigger 43 triggers the gas generating agent 42 to expand the air bag 41, so as to lift the inner side wall of the tire, and thus an elastic air film layer is formed between the wheel hub 100 and the ground.
In one example of the present invention, the air bag module 40 is arranged along a circumferential direction of the rim 20; the flexible contact surface of the tire can be increased by arranging the air bag assembly 40 along the circumferential direction of the rim 20, so that the wheel hub 100 is safer and more reliable; it is to be understood that the air bag modules 40 may be arranged continuously in the circumferential direction of the rim 20 here, or may be arranged intermittently in the circumferential direction of the rim 20.
In an example of the present invention, the number of the elastic devices 30 is the same as the number of the spokes 10 or is an integral multiple of the number of the spokes 10, that is, the elastic devices 30 are arranged corresponding to the spokes 10 one by one, or a plurality of elastic devices 30 correspond to one spoke 10, so that the working stability of the elastic devices 30 can be improved, and the flexible contact surface between the rim 20 and the inner side wall of the tire can be increased.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The exemplary embodiment of the hub 100 proposed by the present invention has been described in detail above with reference to a preferred embodiment, however, it will be understood by those skilled in the art that numerous variations and modifications can be made to the specific embodiment described above, and that numerous combinations of the various features, structures and characteristics proposed by the present invention can be made without departing from the inventive concept, the scope of which is defined by the appended claims.
Claims (9)
1. A runflat hub with a cushion structure, comprising a rim (20) and spokes (10) coupled inside the rim (20), wherein the tire is adapted to be mounted on the rim (20), characterized in that,
further comprising:
elastic means (30) comprising: a mechanical spring (31), one end of the mechanical spring (31) is suitable for being coupled with the wheel rim (20), the other end of the mechanical spring is suitable for extending towards the inner side wall of the tire, and the elastic device (30) is configured to enable the mechanical spring (31) to have a tendency of moving towards the direction of the tire after being compressed;
an airbag assembly (40) comprising: the tire is characterized by comprising an air bag (41), gas generating agents (42) filled in the air bag (41) and a trigger (43) which is in contact with the gas generating agents (42) and is used for triggering the gas generating agents (42), wherein the air bag (41) is suitable for being installed on a wheel rim (20) and is arranged in the air bag (41), and when the pressure borne by a wheel hub (100) reaches a threshold pressure, the trigger (43) triggers the gas generating agents (42) to expand the air bag (41) so as to lift the inner side wall of the tire; the airbag module (40) further comprises: a pressure sensor (34) coupled to the elastic means (30) and coupled to the trigger (43); when the pressure sensor (34) detects that the pressure borne by the elastic device (30) reaches a pressure threshold value, the pressure sensor (34) triggers the trigger (43) to enable the air bag (41) to be expanded under the action of the gas generating agent (42);
wherein the resilient means (30) is higher in height in the non-stressed state than in the non-inflated state of the airbag module (40).
2. The explosion proof hub with a cushion structure of claim 1,
the elastic means (30) further comprise:
a guide rod (32) placed inside the mechanical spring (31) and having one end detachably coupled with the rim (20) and the other end extending toward the tire;
the guide rod (32) is of a telescopic structure and can guide the mechanical spring (31) to synchronously extend and contract in the radial direction of the hub (100).
3. The explosion proof hub with a cushion structure of claim 2,
the guide bar (32) includes: a gas spring;
wherein the initial pressure P of the gas inside the gas spring t Standard atmospheric pressure P and initial pressure P of the gas inside the tyre L The three satisfy the following conditions: p < P t ＜P L 。
4. The explosion proof hub with a cushion structure of claim 1,
the elastic device (30) comprises a plurality of elastic devices and is arranged at intervals along the circumferential direction of the wheel rim (20).
5. An explosion proof hub with a cushion structure as recited in claim 1,
the mounting position of the elastic means (30) coincides at least in part with the projection position of the spoke (10) on the rim (20) along the radial direction of the hub (100).
6. An explosion proof hub with a cushion structure as recited in claim 1,
the airbag module (40) further comprises:
a flexible housing (44) detachably coupled to the rim (20) and defining a mounting cavity (443) with an open upper end within the flexible housing (44);
wherein the airbag (41) is mounted within the mounting cavity (443).
7. The explosion proof hub with a cushion structure of claim 6,
further comprising:
a baffle (45), the baffle (45) being provided at the open end of the flexible housing (44);
when the air bag (41) is expanded, the baffle (45) is jacked to abut against the inner side wall of the tire.
8. An explosion proof hub with a cushion structure as recited in claim 7,
an installation groove (442) is formed in the circumferential direction of the open end, and the baffle (45) is suitable for being clamped in the installation groove (442);
when the air bag assembly (40) is pressed, the air bag (41) expands to deform the flexible shell (44), so that the baffle (45) is ejected out of the installation cavity (443) by the air bag (41).
9. The explosion proof hub with a cushion structure of claim 1,
the airbag module (40) is arranged along a circumferential direction of the rim (20).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011349173.6A CN112373249B (en) | 2020-11-26 | 2020-11-26 | Explosion-proof wheel hub with buffer structure |
| PCT/CN2020/132092 WO2022109985A1 (en) | 2020-11-26 | 2020-11-27 | Explosion-proof wheel hub having buffer structure |
| ZA2022/09055A ZA202209055B (en) | 2020-11-26 | 2022-08-12 | Explosion-proof wheel hub with buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011349173.6A CN112373249B (en) | 2020-11-26 | 2020-11-26 | Explosion-proof wheel hub with buffer structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112373249A CN112373249A (en) | 2021-02-19 |
| CN112373249B true CN112373249B (en) | 2022-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202011349173.6A Active CN112373249B (en) | 2020-11-26 | 2020-11-26 | Explosion-proof wheel hub with buffer structure |
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| Country | Link |
|---|---|
| CN (1) | CN112373249B (en) |
| WO (1) | WO2022109985A1 (en) |
| ZA (1) | ZA202209055B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113715560A (en) * | 2021-08-17 | 2021-11-30 | 付海洋 | High-performance tire and preparation process thereof |
| CN117664603A (en) * | 2024-01-31 | 2024-03-08 | 武汉成华汽车饰件有限公司 | Automobile hub cover installation firmness test equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022109985A1 (en) | 2022-06-02 |
| ZA202209055B (en) | 2022-11-30 |
| CN112373249A (en) | 2021-02-19 |
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