Rim of non-pneumatic tire

Abstract

The rim comprises a rim body, a plurality of first bolt connecting holes used for being connected with an axle are formed in the middle of the rim body, a plurality of limiting structures are arranged on the outer side face of the rim body so as to be connected with the inner side face of the tire in a clamped mode, and a notch is formed in the end of the rim body; the check ring is detachably mounted in the notch, and the check ring is provided with a flange; wherein the check ring is installed in the notch, the blocking edge on the check ring can limit the axial movement of the tire, and the limiting structure of the rim body limits the circumferential rotation of the tire. According to the rim of the non-pneumatic tire, the axial displacement of the tire is limited through the retaining edges of the retaining rings, meanwhile, the circumferential rotation of the tire is limited through the limiting structures on the outer side face of the rim body, and the effect of stably fixing the tire to the rim is achieved. Moreover, the bolt in the first bolt connecting hole is only used for connecting the axle and is not in contact with the non-pneumatic tire, so that the stress condition of the bolt is simplified, and the service life of the bolt is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile rims, in particular to a rim of a non-pneumatic tire. Background Art

[0002] Traditional pneumatic tires can suffer from issues like blowouts and leaks that can affect driving safety. Therefore, airless tires are now available on the market. These utilize elastic spokes for support, torque transmission, and vibration damping. These tires require no air and are resistant to blowouts, improving driving safety.

[0003] Compared with traditional pneumatic tires, since airless tires cannot change their volume by deflation and inflation, the tire size needs to have a surplus so that the tire can be smoothly installed on the rim, and then the tire and the rim are fixed by adhesive bonding or bolts to prevent the tire and the rim from rotating relative to each other while the car is driving, thereby causing accidents such as brake failure.

[0004] However, the adhesive will have a problem of reduced bonding effect after long-term use; in the existing bolt fixing method, the bolt passes through the retaining ring, tire and rim and is directly connected to the axle, which makes the bolt bear axial force and circumferential torque at the same time, which can easily cause the bolt to break. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a rim for a pneumatic-free tire that maintains a stable connection to the pneumatic-free tire for a long period of time, preventing the pneumatic-free tire from rotating relative to the rim. Furthermore, the rim and axle connection are optimized, extending the service life of the bolts.

[0006] A rim of a pneumatic tire according to an embodiment of the present invention includes:

[0007] A rim body, wherein a plurality of first bolt connection holes for connecting to an axle are formed in a middle portion of the rim body, a plurality of limiting structures are formed on an outer side surface of the rim body for engaging with an inner side surface of a tire, and a notch is formed at an end portion of the rim body;

[0008] A retaining ring, the retaining ring is detachably mounted on the notch, and the retaining ring is provided with a retaining edge;

[0009] The retaining ring is mounted to the notch, the rib on the retaining ring can limit the axial movement of the tire, and the limiting structure of the rim body limits the circumferential rotation of the tire.

[0010] The rim of the airless tire according to the embodiments of the present invention has at least the following beneficial effects: the rim utilizes the retaining edge on the retaining ring to limit the axial displacement of the tire, while the retaining structure on the outer surface of the rim body restricts the circumferential rotation of the tire, thereby stably securing the tire to the rim. Furthermore, the bolts in the first bolt connection holes are only used for connecting to the axle and do not come into contact with the airless tire, thereby simplifying the force applied to the bolts and extending their service life.

[0011] According to some embodiments of the present invention, notches are provided at both ends of the rim body, there are two retaining rings which are installed in a one-to-one correspondence to the notches, and the retaining edges on the two retaining rings jointly limit the axial movement of the tire.

[0012] According to some embodiments of the present invention, a notch is provided at one end of the rim body, a first rib is provided at the other end of the rim body, and a second rib is provided on the retaining ring; the retaining ring is installed to the notch, and the first rib of the rim body and the second rib of the retaining ring jointly limit the axial movement of the tire.

[0013] According to some embodiments of the present invention, both the first rib and the second rib extend along a radial direction of the rim of the pneumatic-free tire.

[0014] According to some embodiments of the present invention, the rim body includes a spoke and a rim tube, the first bolt connection hole is opened in the middle of the spoke, the rim tube transitions from the first end to the second end along its thickness direction, the first end of the rim tube is connected to the spoke, the second end of the rim tube is provided with a second guard, and the limiting structure is provided on the outer side of the rim tube.

[0015] According to some embodiments of the present invention, the spokes and the rim are an integral structure.

[0016] According to some embodiments of the present invention, the notch is provided with a second bolt connection hole, and the retaining ring is provided with a through hole adapted to the second bolt connection hole, so that a bolt can pass through the through hole and be threadedly connected to the second bolt connection hole.

[0017] According to some embodiments of the present invention, the limiting structure is specifically a groove.

[0018] According to some embodiments of the present invention, the limiting structure is specifically a convex strip.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 is a cross-sectional view of the rim of the airless tire of the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0023] Figure 3 A front view of the rim of the airless tire of the present invention;

[0024] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0025] Figure markings: 100-rim body, 110-spoke, 111-first bolt connection hole, 120-rim tube, 121-notch, 1211-positioning groove, 1212-second bolt connection hole, 122-first guard, 123-limiting structure, 1231-groove 200-retaining ring, 210-second guard, 220-through hole. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0031] Traditional pneumatic tires can suffer from issues like blowouts and leaks that can affect driving safety. Therefore, airless tires are now available on the market. These utilize elastic spokes for support, torque transmission, and vibration damping. These tires require no air and are resistant to blowouts, improving driving safety.

[0032] Compared with traditional pneumatic tires, since airless tires cannot change their volume by deflation and inflation, the tire size needs to have a surplus so that the tire can be smoothly installed on the rim, and then the tire and the rim are fixed by adhesive bonding or bolts to prevent the tire and the rim from rotating relative to each other while the car is driving, thereby causing accidents such as brake failure.

[0033] However, the adhesive will have a problem of reduced bonding effect after long-term use; in the existing bolt fixing method, the bolt passes through the retaining ring, tire and rim and is directly connected to the axle, which makes the bolt bear axial force and circumferential torque at the same time, which can easily cause the bolt to break.

[0034] To address this issue, the present application proposes a rim for a pneumatic-free tire. This rim utilizes the retaining edge of a retaining ring 200 to limit the tire's axial displacement, while simultaneously utilizing a retaining structure 123 on the outer side of the rim body 100 to limit the tire's circumferential rotation, thereby stably securing the tire to the rim. Furthermore, the bolts in the first bolt connection holes 111 are only used to connect to the axle and do not come into contact with the pneumatic-free tire, thereby simplifying the bolt's stress profile and extending its service life.

[0035] Reference Figure 1 and Figure 2 The present invention relates to a rim for a pneumatic tire, comprising a rim body 100 and a retaining ring 200. The rim body 100 is the main structure of the rim, connecting the pneumatic tire and the axle. It transmits the axle's torque to the pneumatic tire during axle rotation or vehicle braking. The retaining ring 200 is connected to the rim body 100 and serves to position the pneumatic tire, preventing it from dislodging from the rim body 100.

[0036] The center of the rim body 100 is provided with a plurality of first bolt connection holes 111 for connecting to the axle. The outer side of the rim body 100 is provided with a plurality of retaining structures 123 for engaging with the inner side of the tire, thereby limiting the circumferential rotation of the tire through the retaining structures 123 of the rim body 100. The end of the rim body 100 is provided with a notch 121 for connecting to the retaining ring 200.

[0037] The retaining ring 200 is detachably mounted on the notch 121 and is provided with a rib. After the retaining ring 200 is mounted on the notch 121, the rib of the retaining ring 200 can abut against the end face of the airless tire, thereby completing the position limiting of the airless tire and limiting the axial movement of the airless tire.

[0038] In some embodiments, notches 121 are formed at both ends of the rim body 100, and two retaining rings 200 are provided, one for each notch 121. When installing a tire, the two retaining rings 200 are removed, the tire is inserted from one end of the rim body 100, and then the two retaining rings 200 are fixed to their corresponding notches 121. During installation of the two retaining rings 200, the flanges on the retaining rings 200 can come into contact with the end faces of the tire, thereby clamping the two retaining rings 200 together at both ends of the tire, limiting axial movement of the tire and completing the installation of the airless tire.

[0039] In this embodiment, a notch 121 is defined at one end of the rim body 100, a first rib 122 is provided at the other end of the rim body 100, and a second rib 210 is provided on the retaining ring 200. When installing a tire, the retaining ring 200 is removed, the tire is inserted into the rim body 100 at the end with the notch 121, and the retaining ring 200 is then secured to the notch 121. After the retaining ring 200 is installed in the notch 121, the first rib 122 on the rim body 100 and the second rib 210 on the retaining ring 200 jointly clamp the two end surfaces of the tire, thereby limiting the tire's axial movement.

[0040] Furthermore, the rim body 100 includes spokes 110 and a rim barrel 120. Optionally, spokes 110 may have multiple spokes extending outward in a circular array from its center, and a structure connecting the spokes is provided at the outer edge, thereby ensuring the structural strength of spokes 110 while reducing the weight of spokes 110. A plurality of first bolt connection holes 111 for connecting to an axle are provided in the center of spokes 110, and each first bolt connection hole 111 is distributed in a circular array around the center of spokes 110.

[0041] The rim 120 is cylindrical, transitioning from a first end to a second end along its thickness. The first and second ends refer to the two end surfaces of the rim 120, respectively. The outer surface of the rim 120 is designed to abut against the inner wall of the airless tire, thereby completing the installation of the airless tire. It is worth noting that the first end of the rim 120 is connected to the spokes 110, and the second end of the rim 120 is provided with a first flange 122. The outer surface of the rim 120 is provided with multiple retaining structures 123. These retaining structures 123 are raised or recessed in the radial direction of the rim, thereby engaging with the inner surface of the airless tire.

[0042] Alternatively, the spokes 110 and the rim tube 120 may be separate structures, connected by assembly. Alternatively, as in this embodiment, the spokes 110 and the rim tube 120 are integrally formed, thereby meeting the structural strength requirements of the rim and reducing the risk of fracture at the connection between the spokes 110 and the rim tube 120 when the rim is impacted by external forces.

[0043] Regarding the detachable connection between the retaining ring 200 and the notch 121, in some embodiments, the retaining ring 200 is locked with the notch 121 by a snap connection; in other embodiments, the retaining ring 200 can also be connected with the notch 121 by a pin connection. In this embodiment, the retaining ring 200 and the notch 121 are connected by bolts. Specifically, refer to Figure 2 The notch 121 is provided with a second bolt connection hole 1212, and the retaining ring 200 is provided with a through hole 220 adapted to the second bolt connection hole 1212. The bolt can pass through the through hole 220 and be threadedly connected to the second bolt connection hole 1212. Therefore, after tightening the bolt, the retaining ring 200 can be tightly pressed against the notch 121.

[0044] As will be readily understood, to ensure a more stable connection between the retaining ring 200 and the rim body 100 and to prevent uneven force on the retaining ring 200 during bolt connection, the notch 121 is provided with a plurality of second bolt connection holes 1212, each of which is arranged in a circular array around the central axis of the rim body 100. Accordingly, the retaining ring 200 is also provided with a plurality of through holes 220 arranged in a circular array, the number of which matches the number of the second bolt connection holes 1212, and the arrangement is one-to-one corresponding.

[0045] The assembly process for the rim of this airless tire is as follows: After removing the retaining ring 200 from the rim body 100, the airless tire is inserted from the second end of the rim barrel 120, with the end face of the airless tire abutting against the first flange 122 of the rim barrel 120. It is important to note that during this process, the inner wall of the airless tire is aligned with the retaining structure 123 of the rim barrel 120, completing the engagement of the airless tire with the rim barrel 120. Then, the retaining ring 200 is reinstalled into the notch 121 and bolted to the notch 121, so that the second flange 210 of the retaining ring 200 abuts against the other end face of the airless tire, completing the final locking of the airless tire.

[0046] Furthermore, the second bolt connection hole 1212 on the notch 121 and the through hole 220 on the retaining ring 200 both extend along the axial direction of the rim, so that during the process of tightening the bolts, the distance between the second retaining edge 210 and the first retaining edge 122 gradually decreases, and the clamping force of the first retaining edge 122 and the second retaining edge 210 on the airless tire can be adjusted by adjusting the tightness of the bolts.

[0047] Furthermore, the notch 121 defines an annular positioning groove 1211, and the retaining ring 200 is provided with a protrusion that matches the shape of the positioning groove 1211. Thus, when the retaining ring 200 is installed in the notch 121, the positioning groove 1211 can be used to guide the retaining ring 200 during installation. When the protrusion on the retaining ring 200 successfully engages with the positioning groove 1211, it indicates that the retaining ring 200 is in the correct position and can be secured by tightening the bolts.

[0048] Furthermore, the inner wall surface of the notch 121 is a curved surface, and the surface shape of the retaining ring 200 is adapted to the shape of the notch 121. By designing the inner wall surface of the notch 121 as a curved surface, the influence of the stress concentration effect on the structure of the turning point can be reduced, and the risk of fracture at the turning point when impacted by external force is reduced.

[0049] As for the specific shapes of the first rib 122 and the second rib 210, the first rib 122 and the second rib 210 both extend in the radial direction of the rim of the airless tire, so that when the airless tire is installed on the rim tube 120, the raised first rib 122 and the second rib 210 can be abutted against the end face of the airless tire, preventing the airless tire from falling off the rim tube 120.

[0050] For the limiting structure 123, refer to Figure 3 and Figure 4The limiting structure 123 can be configured as a groove 1231, and the inner wall surface of the airless tire can be provided with a corresponding raised ridge to achieve a snap connection, or a groove can be provided and a key can be provided between the groove 1231 on the rim tube 120 to form a key connection. Alternatively, the limiting structure 123 of the rim tube 120 can be configured as a ridge, and the inner wall surface of the airless tire can be provided with a corresponding groove to achieve a snap connection.

[0051] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A rim of a pneumatic tire, characterized in that: include: A rim body, wherein a plurality of first bolt connection holes for connecting to an axle are formed in a middle portion of the rim body, a plurality of limiting structures are formed on an outer side surface of the rim body for engaging with an inner side surface of a tire, and a notch is formed at an end portion of the rim body; A retaining ring, the retaining ring is detachably mounted on the notch, and the retaining ring is provided with a retaining edge; The retaining ring is mounted to the notch, the rib on the retaining ring can limit the axial movement of the tire, and the limiting structure of the rim body limits the circumferential rotation of the tire.

2. The rim of the airless tire according to claim 1, characterized in that: Both ends of the rim body are provided with notches, and there are two retaining rings which are mounted in a one-to-one correspondence to the notches. The retaining edges on the two retaining rings jointly limit the axial movement of the tire.

3. The rim of the airless tire according to claim 1, characterized in that: A notch is formed at one end of the rim body, a first rib is formed at the other end of the rim body, and a second rib is formed on the retaining ring; the retaining ring is mounted to the notch, and the first rib of the rim body and the second rib of the retaining ring jointly limit the axial movement of the tire.

4. The rim of the airless tire according to claim 3, characterized in that: The first rib and the second rib both extend in a radial direction of the rim of the pneumatic-free tire.

5. The rim of the airless tire according to claim 3, characterized in that: The rim body includes a spoke and a rim tube, the first bolt connection hole is opened in the middle of the spoke, the rim tube transitions from the first end to the second end along its thickness direction, the first end of the rim tube is connected to the spoke, the second end of the rim tube is provided with a second rib, and the limiting structure is provided on the outer side of the rim tube.

6. The rim of the airless tire according to claim 5, characterized in that: The wheel spokes and the wheel rim are an integrated structure.

7. The rim of the airless tire according to claim 1, characterized in that: The notch is provided with a second bolt connection hole, and the retaining ring is provided with a through hole adapted to the second bolt connection hole. A bolt can pass through the through hole and be threadedly connected with the second bolt connection hole.

8. The rim of the airless tire according to claim 1, characterized in that: The limiting structure is specifically a groove.

9. The rim of the airless tire according to claim 1, characterized in that: The limiting structure is specifically a convex strip.

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