Mechanical wheel with self-locking articulation

Abstract

This invention discloses a mechanical wheel with a self-locking hinge structure, comprising: an inner rim and an outer rim, and a hinge member hinged between the inner and outer rims. A hinge locking structure is provided between the hinge member and the inner and / or outer rims. The hinge locking structure includes: a double-partition structure and a single-layer plate structure, with the single-layer plate structure embedded within the double-partition structure and hinged together by a fastening bolt; a ratchet, integrally formed with the locking nut on the fastening bolt, and abutting against the outer side of the double-partition structure; a pawl, located on one side of the ratchet, with its pawl end extending into the ratchet; and an elastic pressure plate, located on one side of the pawl and elastically abutting against the pawl, causing the pawl's pawl end to engage with the ratchet. Compared with the prior art, the beneficial effect of this invention is that by adding a corresponding ratchet and pawl to the locking end of the fastening bolt at the hinge, and utilizing the lateral impact force of the vehicle during turning to drive the ratchet to rotate, a self-locking function is achieved.

Description

Technical Field

[0001] This invention belongs to the field of tire technology, and specifically relates to a mechanical wheel with a self-locking hinge structure. Background Technology

[0002] Airless tires are a new concept tire proposed in recent years. They replace the shock absorption function of current vehicle suspension and the gas shock absorption function of traditional pneumatic tires by subverting the structure of traditional tires. The main transmission and damping structures include shock absorbers and hinges. However, when either the shock absorber or the hinge forms a connection between the inner and outer wheel rims, a hinged structure is inevitably used. This hinged structure differs fundamentally from the traditional hinge in terms of functional requirements. The traditional hinge is designed to achieve the hinged state, primarily focusing on ensuring smoothness and stability during the hinge process. In contrast, the hinge structure used between the inner and outer wheel rims needs to consider the unique requirements of its application scenario. During vehicle operation, various turning maneuvers occur. Due to the split structure design between the inner and outer wheel rims, a large deflection torque is constantly and frequently generated, resulting in lateral friction and impact at the hinge. This friction and impact inevitably leads to wear and loosening at the hinge. Once wear and loosening occur, it will affect the lateral restraint between the inner and outer wheel rims and may directly lead to the risk of hinge separation. Both of these factors increase the safety risks during vehicle operation. Summary of the Invention

[0003] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.

[0004] This invention provides a mechanical wheel and tire with a self-locking hinge structure. By adding a corresponding ratchet and pawl to the locking end of the fastening bolt at the hinge, and using the lateral impact force of the vehicle during turning to drive the ratchet to rotate, the self-locking function is achieved.

[0005] The present invention discloses a mechanical wheel with a self-locking hinge structure, comprising: an inner rim and an outer rim, and a hinge member hinged between the inner rim and the outer rim, wherein the hinge member is provided with a hinge locking structure between the inner rim and / or the outer rim;

[0006] The hinged locking structure includes:

[0007] The structure comprises a double-partition structure and a single-layer plate structure, wherein the single-layer plate structure is embedded within the double-partition structure and hinged together by fastening bolts.

[0008] The ratchet and the locking nut, which are threadedly connected to the threaded portion at the locking end of the fastening bolt, are an integral structure and abut against the outer side of the double partition structure;

[0009] A pawl is hinged to one side of the ratchet, with its pawl end extending into the ratchet groove of the ratchet to limit the rotation direction of the ratchet.

[0010] An elastic pressure plate is disposed on one side of the pawl and elastically abuts against the pawl, so that the pawl end of the pawl engages with the ratchet groove of the ratchet.

[0011] In some embodiments, the hinge includes a hinge;

[0012] The hinge includes:

[0013] A first hinge and a second hinge, wherein the outer end of the first hinge is hinged to the outer rim; a hinge locking structure is provided between the inner ends of the first hinge and the inner ends of the second hinge; and the outer end of the second hinge is hinged to the inner rim.

[0014] In some embodiments, the hinge further includes a shock absorber; the hinge point of the shock absorber with the inner rim and the hinge point of the second hinge with the inner rim coincide.

[0015] In some implementations, it also includes:

[0016] Multiple protrusions are evenly spaced on the outer periphery of the inner rim and extend toward the outer rim, with a gap between them.

[0017] A hinge is hinged between the outer end of each of the protrusions and the outer rim;

[0018] The shock absorber has its inner and outer ends respectively hinged between the outer end of each of the external protrusions and the outer rim, and is located at the interval between adjacent external protrusions; the shock absorbers are arranged in the same direction and at the same angle of inclination.

[0019] The cross-sectional center axes of the inner rim, the outer rim, the hinge, and the shock absorber are located on the same reference plane.

[0020] In some embodiments, the hinge joint of the outer end of the protrusion, the inner end of the shock absorber, and the outer end of the second hinge body is formed and fitted together from the inside out by a single-layer plate structure, a double-clamp plate structure, and a double-partition plate structure.

[0021] In some implementations, it also includes:

[0022] A lubricating pad is located between the double-partition structure and the single-layer plate structure and is sleeved on the fastening bolt, and the double-partition structure, the single-layer plate structure and the lubricating pad are fitted together.

[0023] A lubrication sleeve is located between the double partition structures and fitted onto the optical axis portion of the fastening bolt.

[0024] In some embodiments, the number of the protrusions is odd, and the opening directions of the hinges are consistent.

[0025] In some embodiments, the number of the protrusions is even, the opening directions between two adjacent hinges are opposite, and the included angle of one hinge is acute and the included angle of the other hinge is obtuse.

[0026] In some embodiments, the elastic pressure plate is composed of two arc segments with opposite opening directions connected together; the elastic contact point between the elastic pressure plate and the pawl is located at the apex of the outer arc segment of the elastic pressure plate.

[0027] The present invention also discloses a wheel, comprising: a mechanical wheel having a self-locking hinge structure as described in any of the above embodiments.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. The hinge (shock absorber and hinge) between the inner and outer wheel rims will receive a strong lateral deflection torque during vehicle turning, which will impact the fastening bolt at the hinge. Therefore, by setting a corresponding ratchet at the hinge to limit the rotation direction of the fastening bolt, and at the same time coordinating with the hinge action, the self-locking function is completed.

[0030] 2. The layout and hinge method of each structural component have been highly integrated to reduce the number of hinge points. By setting the cross-sectional center axis of the inner rim, outer rim, shock absorber and hinge on the same reference plane, the stress points are all on the same reference plane, the stress is more uniform, the structure at the hinge is more stable, and with the clamping and centering effect of the self-locking structure, the stability and reliability of the tire during the running process are guaranteed. Attached Figure Description

[0031] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0033] Figure 2 This is a three-dimensional structural diagram of the hinge of the present invention.

[0034] Figure 3 This is a three-dimensional structural diagram of the second hinge body of the present invention.

[0035] Figure 4 This is a three-dimensional structural diagram of the first hinge body of the present invention.

[0036] Figure 5 This is a schematic diagram of the hinge opening direction of the present invention.

[0037] Figure description: Inner rim 1, Outer protrusion 2, Outer rim 3, Hinge 4, Shock absorber 5, First hinge body 6, Second hinge body 7, First sleeve 8, Second sleeve 9, First clamping plate 10, Second clamping plate 11, Third clamping plate 12, Fourth clamping plate 13, Fastening bolt 14, Optical shaft part 15, Threaded part 16, Locking nut 17, Ratchet 18, Lubricating pad 19, Lubricating sleeve 20, Hinge pin 21, Pawl 22, Elastic pressure plate 23. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments provided by this invention without inventive effort are within the scope of protection of this invention.

[0039] Obviously, the accompanying drawings described below are merely some examples or embodiments of the present invention. Those skilled in the art can apply the present invention to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this invention, modifications to design, manufacturing, or production based on the technical content disclosed in this invention are merely conventional technical means and should not be construed as insufficient disclosure of the present invention.

[0040] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention may be combined with other embodiments without conflict.

[0041] A mechanical wheel with a self-locking hinge structure includes: an inner rim 1 and an outer rim 3, and a hinge member hinged between the inner rim 1 and the outer rim 3, wherein the hinge member is provided with a hinge locking structure between the inner rim 1 and / or the outer rim 3.

[0042] The hinged locking structure includes:

[0043] The structure consists of a double-partition structure and a single-layer plate structure, with the single-layer plate structure embedded within the double-partition structure and hinged together by fastening bolts 14.

[0044] The ratchet 18 and the locking nut 17, which are threadedly connected to the threaded portion 16 at the locking end of the fastening bolt 14, are an integral structure and abut against the outer side of the double partition structure.

[0045] Pawl 22 is hinged to one side of ratchet 18 by hinge pin 21, and its pawl end extends into the ratchet groove of ratchet 18 to limit the rotation direction of ratchet 18.

[0046] The elastic pressure plate 23 is located on one side of the pawl 22 and elastically abuts against the pawl 22, so that the pawl end of the pawl 22 engages with the ratchet groove of the ratchet 18.

[0047] The hinge components include: hinge 4 and shock absorber;

[0048] The hinge 4 includes: a first hinge body 6 and a second hinge body 7. The outer end of the first hinge body 6 is hinged to the outer rim 3. A hinge locking structure is provided between the inner end of the first hinge body 6 and the inner end of the second hinge body 7. The outer end of the second hinge body 7 is hinged to the inner rim 1.

[0049] The hinge point of the shock absorber 5 and the inner rim 1 and the hinge point of the second hinge 7 and the inner rim 1 coincide.

[0050] Reference Figure 1 As shown, specifically, the hinge locking structure is set at the hinge between the first hinge body 6 and the second hinge body 7, and at the hinge between the shock absorber 5, the inner wheel rim 1, and the second hinge body 7. During prototype testing, it was found that in steering simulation experiments and tire movement experiments, the aforementioned hinge points experienced greater deflection torque and larger changes in the angle opening during the hinge process. In contrast, the hinge points between the shock absorber 5 and the outer wheel rim 3, and between the first hinge body 6 and the outer wheel rim 3, were less affected by these factors. Therefore, placing the hinge locking structure at these structural positions satisfies conventional requirements. Of course, corresponding hinge locking structures can also be provided at all hinge points; those skilled in the art can make adaptive adjustments and settings based on the above circumstances.

[0051] Meanwhile, the reason why the hinge locking structure adopts the embedded hinge method of double partition structure and single layer plate structure is to ensure that the rigidity of the hinge structure at the hinge point is more reliable. At the same time, it utilizes the locking process of fastening bolt 14 and locking nut 17 through the cooperation of ratchet 18 and pawl 22, and the screw presses the double partition structure to ensure that it is in close contact with the single layer plate structure, so as to avoid the problem of shaking at the hinge point.

[0052] In some embodiments, it also includes:

[0053] Multiple protrusions 2 are evenly spaced on the outer periphery of the inner rim 1 and extend towards the outer rim 3, with gaps between them. The length of the support arm formed by the protrusions 2 and the inner rim 1 (from the center of the inner rim 1 to the outermost end of the protrusion 2) needs to be less than half the inner diameter of the outer rim 3, minus a downward adjustment of the inner rim 1. Simultaneously, the gap between the outer end of the protrusion 2 and the inner diameter of the outer rim 3 should be controlled within the range of 20-100mm. The main purpose of the protrusions 2 is to reduce the size of the inner rim 1, thereby achieving further weight reduction in the equipment structure. Furthermore, the middle section of the protrusions 2 can adopt a structure similar to an inclined impeller to create effective airflow and, in conjunction with the placement of the shock absorber 5, achieve heat dissipation.

[0054] Hinges 4 are hinged between the outer end of each protrusion 2 and the outer rim 3.

[0055] The shock absorber 5 is hinged at its inner and outer ends and is located between the outer end of each outer protrusion 2 and the outer rim 3 and at the interval between adjacent outer protrusions 2; the shock absorbers 5 are arranged in the same direction and at the same angle.

[0056] The central axes of the cross sections of the inner rim 1, outer rim 3, hinge 4, and shock absorber 5 are located on the same reference plane.

[0057] When setting the structural layout of the shock absorber, the shock absorber is set along the tangent direction of the circle formed by the rotation of the outer convex part 2, so that the shock absorber is subjected to force more smoothly, reducing the impact force on the hinge. Combined with the force relationship, position relationship and quantity relationship between the shock absorber and the inner rim 1, outer rim 3 and hinge 4, the stability and reliability of the hinge is guaranteed.

[0058] At the same time, the above structure is also highly related to the double partition structure and single-layer plate structure in the hinge locking structure. Specifically, during the hinge friction process, the hinge will inevitably be subject to frictional wear. When frictional wear occurs, the resulting gap will cause the hinge to shake. The double partition structure, in conjunction with the locking nut 17, clamps inward in both directions to ensure that the cross-sectional center axis of the inner rim 1, outer rim 3, hinge 4 and shock absorber 5 are always located on the same reference plane.

[0059] Specifically, the structural relationship of its hinge is that the hinge of the outer end of the protruding part 2, the inner end of the shock absorber 5, and the outer end of the second hinge body 7 is composed of and fitted together from the inside out through a single-layer plate structure, a double-clamp plate structure and a double-partition plate structure.

[0060] In this embodiment, the protruding part 2 is a single-layer plate structure, the inner end of the shock absorber 5 is a double-clamp structure and is clamped on both sides of the protruding part 2, and the outer end of the second hinge 7 is a double-clamp structure and is clamped on both sides of the shock absorber 5. Of course, the single-layer plate structure, the double-clamp structure, and the double-partition structure can also be interchanged accordingly. For example, the protruding part 2 can be a double-partition structure, the second hinge 7 can be a double-clamp structure, and the shock absorber 5 can be a single-layer plate structure to achieve the corresponding structural fit.

[0061] In some embodiments, the system further includes: a lubricating pad 19 and a lubricating sleeve 20; the lubricating pad 19 is located between the double partition structure and the single-layer plate structure and is sleeved on the fastening bolt 14, and the double partition structure, the single-layer plate structure and the lubricating pad 19 are fitted together; the lubricating sleeve 20 is located between the double partition structures and is sleeved on the optical axis portion 15 on the fastening bolt 14.

[0062] The purpose of setting up the lubrication pad 19 and the lubrication sleeve 20 is to ensure the lubrication level at their connection to ensure the hinge effect. At the same time, the lubrication pad 19 and the lubrication sleeve 20 are also conventional friction wear parts.

[0063] In some embodiments, the number of protrusions 2 is odd, and the opening directions of the hinges 4 are consistent.

[0064] In some embodiments, the number of protrusions 2 is even, the opening directions between two adjacent hinges 4 are opposite, and the included angle of one hinge 4 is acute and the included angle of the other hinge 4 is obtuse.

[0065] In actual prototype testing, when the number of protruding parts 2 is odd, the opening direction of hinges 4 must remain consistent to ensure the stability and balance of force. However, during vehicle start-up, stopping, and reversing, the wheels rotate in two directions relative to each other. Therefore, a unidirectional design would significantly affect the force transmission during reverse rotation. After extensive prototype testing, the final number of protruding parts 2 was set to six, with bidirectional opening directions ensuring stability during force transmission. Specifically, one hinge has an acute angle, and the other has an obtuse angle. The acute and obtuse angles are formed primarily based on the tilt direction of the shock absorber 5.

[0066] In some embodiments, the elastic pressure plate 23 is composed of two arc segments with opposite opening directions connected together; the elastic contact point between the elastic pressure plate 23 and the pawl 22 is located at the apex of the outer arc segment of the elastic pressure plate 23.

[0067] In this embodiment, specifically, refer to... Figure 3As shown, the first hinge body 6 adopts a double-sleeve design, with a first sleeve 8 and a second sleeve 9 at each end. The second hinge body 7 adopts an I-shaped structure, with a first clamping plate 10, a second clamping plate 11, a third clamping plate 12, and a fourth clamping plate 13 at each end. The second sleeve 9 is embedded in the third clamping plate 12 and the fourth clamping plate 13 and has a fastening bolt 14. Another fastening bolt 14 is located between the first clamping plate 10 and the second clamping plate 11. The locking nuts 17 of the two fastening bolts 14 are located on the same side. At the same time, the corresponding two pawls 22 and the elastic pressure plate 23 are arranged in a centrally symmetrical structure to make full use of the structural space and ensure the compactness of the equipment. The function of the elastic pressure plate 23 is to provide relative movement space for the pawls 22 when the ratchet 18 rotates and to mechanically and elastically limit the pawls 22 so that they can always be pressed into the ratchet 18. The double arc structure ensures that it has sufficient elastic deformation capacity.

[0068] A wheel comprising: a mechanical wheel having a self-locking hinge structure as described in any of the above embodiments.

[0069] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanical wheel with a self-locking hinge structure, comprising: An inner rim and an outer rim, and a hinge hinged between the inner rim and the outer rim, characterized in that the hinge is provided with a hinge locking structure between the hinge and the inner rim and / or the outer rim; The hinged locking structure includes: The structure comprises a double-partition structure and a single-layer plate structure, wherein the single-layer plate structure is embedded within the double-partition structure and hinged together by fastening bolts. The ratchet and the locking nut, which are threadedly connected to the threaded portion at the locking end of the fastening bolt, are an integral structure and abut against the outer side of the double partition structure; A pawl is hinged to one side of the ratchet, with its pawl end extending into the ratchet groove of the ratchet to limit the rotation direction of the ratchet. An elastic pressure plate is disposed on one side of the pawl and elastically abuts against the pawl, so that the pawl end of the pawl engages with the ratchet groove of the ratchet. Multiple protrusions are evenly spaced on the outer periphery of the inner rim and extend toward the outer rim, with a gap between them. A hinge is hinged between the outer end of each of the protrusions and the outer rim; The shock absorber has its inner and outer ends respectively hinged between the outer end of each of the external protrusions and the outer rim, and is located at the interval between adjacent external protrusions; the shock absorbers are arranged in the same direction and at the same angle of inclination. The cross-sectional center axes of the inner rim, the outer rim, the hinge, and the shock absorber are located on the same reference plane.

2. The mechanical wheel with a self-locking hinge structure according to claim 1, characterized in that, The hinge includes: A first hinge and a second hinge, wherein the outer end of the first hinge is hinged to the outer rim; a hinge locking structure is provided between the inner ends of the first hinge and the inner ends of the second hinge; and the outer end of the second hinge is hinged to the inner rim.

3. The mechanical wheel with a self-locking hinge structure according to claim 2, characterized in that, The hinge point between the shock absorber and the inner rim and the hinge point between the second hinge body and the inner rim coincide.

4. The mechanical wheel with a self-locking hinge structure according to claim 2, characterized in that, The hinge joint of the outer end of the protruding part, the inner end of the shock absorber, and the outer end of the second hinge body is composed of and fitted together by a single-layer plate structure, a double-clamp plate structure, and a double-partition plate structure from the inside out.

5. The mechanical wheel with a self-locking hinge structure according to claim 1, characterized in that, Also includes: A lubricating pad is located between the double-partition structure and the single-layer plate structure and is sleeved on the fastening bolt, and the double-partition structure, the single-layer plate structure and the lubricating pad are fitted together. A lubrication sleeve is located between the double partition structures and fitted onto the optical axis portion of the fastening bolt.

6. The mechanical wheel with a self-locking hinge structure according to claim 1, characterized in that, The number of the protruding parts is odd, and the opening directions of the hinges are consistent.

7. The mechanical wheel with a self-locking hinge structure according to claim 1, characterized in that, The number of the protrusions is even, the opening directions between two adjacent hinges are opposite, and the included angle of one hinge is acute and the included angle of the other hinge is obtuse.

8. The mechanical wheel with a self-locking hinge structure according to claim 1, characterized in that, The elastic pressure plate is composed of two arc segments with opposite opening directions connected together; the elastic contact point between the elastic pressure plate and the pawl is located at the apex of the outer arc segment of the elastic pressure plate.

9. A wheel, characterized in that, include: The mechanical wheel with a self-locking hinge structure as described in any one of claims 1-8.

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