Non-inflatable electric tire

Abstract

The utility model discloses a non-inflatable electric tire which comprises a tire crown, and a plurality of external connecting sinking grooves are formed in the inner side of the tire crown; the supporting body comprises a fixed inner ring, a first supporting unit is fixed to the periphery of the fixed inner ring, a plurality of layers of second supporting units are sequentially arranged on the periphery of the first supporting unit from inside to outside in the radial direction, and the outer ring of the second supporting unit on the outermost layer is connected to the inner edge of the tire crown; a plurality of outer connecting protrusions in one-to-one correspondence with the outer connecting sinking grooves are arranged on the outer side of the second supporting unit on the outermost side, the outer connecting protrusions can be exactly inserted into the outer connecting sinking grooves, and a plurality of inner connecting sinking grooves in a circumferential array are formed in the inner circle of the fixing inner ring. The hub comprises a hub body, a plurality of inner connecting protrusions which are arranged in a circumferential array and correspond to the inner connecting sinking grooves one to one are arranged on the outer circle of the hub body, and the inner fixing ring is just connected to the inner connecting protrusions in a sleeving mode through the inner connecting sinking grooves; according to the utility model, the crown and the support body as well as the support body and the hub are respectively and detachably connected together, so that the disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a non-pneumatic electric tire. Background Art

[0002] As a load support, tires have a direct impact on the safety of automobile driving. At present, tires are roughly divided into two categories. One category is pneumatic tires, which are widely used in the vehicle industry due to their simple structure, long service life, good vibration reduction performance and good heat dissipation. However, pneumatic tires have their inherent defects. Pneumatic tires need to check the air pressure regularly to maintain optimal performance and safety. Too high or too low air pressure will affect the tire's grip and durability and increase wear. Tires are easily punctured, resulting in inner tube leakage or even blowout, and are easily affected by the environment.

[0003] The other type is non-pneumatic tires, which are used in military, aerospace, transportation and other industries for their wear resistance, no fear of punctures, and no air leakage or blowout. In the prior art non-pneumatic tires, the crown and the support body are integrated. No matter whether the crown or the support body is damaged, the tire cannot be disassembled and needs to be replaced as a whole, which has a high maintenance cost. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing non-pneumatic tires, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a non-pneumatic electric tire, in which the crown and the support body, and the support body and the wheel hub are detachably connected together, which is convenient for disassembly and assembly and saves maintenance costs.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a non-pneumatic electric tire, comprising:

[0008] A tread crown, the inner side of which is provided with a plurality of circumferential arrays of externally connected sink grooves;

[0009] The support body comprises a fixed inner ring, a first support unit is fixed on the outer circumference of the fixed inner ring, a plurality of layers of second support units are arranged in sequence from the inside to the outside in the radial direction on the outer circumference of the first support unit, the outer ring of the outermost layer of the second support unit is connected to the inner edge of the crown, a plurality of external connection protrusions corresponding to the external connection grooves are arranged on the outer side of the outermost second support unit, the external connection protrusions can be just inserted into the external connection grooves, and the two ends of the external connection protrusions in the axial direction are respectively against the crown, and the inner ring of the fixed inner ring is provided with a plurality of circumferential arrays of internal connection grooves;

[0010] The wheel hub comprises a wheel hub body, wherein the outer ring of the wheel hub body is provided with a plurality of inner connection protrusions in a circumferential array and corresponding to the inner connection grooves one by one, the fixed inner ring is just sleeved on the inner connection protrusions through the inner connection grooves, and both ends of the inner connection protrusions in the axial direction are in contact with the fixed inner ring.

[0011] As a preferred solution of the non-pneumatic electric tire of the utility model, the first support unit includes a first support portion arranged in a circumferential array on the outer ring of a fixed inner ring, and a through hole penetrating the first support portion in the axial direction is opened on the first support portion.

[0012] As a preferred solution of the non-pneumatic electric tire described in the utility model, the second support unit includes a plurality of second support portions in a circumferential array and corresponding one-to-one with the first support portions, the second support portions and the first support portions have the same structure, the plurality of second support portions in the innermost layer are fixed to the outer peripheries of the corresponding two adjacent first support portions, and the plurality of second support portions in other layers are respectively fixed to the outer peripheries of the corresponding two adjacent second support portions in the inner layer.

[0013] As a preferred solution of the non-pneumatic electric tire of the utility model, the wheel hub further comprises a connecting plate, a plurality of supporting plates are arranged on the outer periphery of the connecting plate, and the plurality of supporting plates are fixed to the inner ring of the wheel hub body. .

[0014] As a preferred solution of the non-pneumatic electric tire of the utility model, it also includes a permanent magnet motor, and the rotor of the permanent magnet motor is fixedly connected to the connecting plate.

[0015] As a preferred solution of the non-pneumatic electric tire described in the utility model, one side of the support plate in the axial direction is arranged close to one side of the fixed inner ring in the axial direction and one side of the support plate in the axial direction does not exceed one side of the fixed inner ring in the axial direction, and an installation opening for accommodating a permanent magnet motor is formed between the other side of the support plate in the axial direction, the other side of the fixed inner ring in the axial direction, and the inner wall of the fixed inner ring.

[0016] As a preferred solution of the non-pneumatic electric tire of the utility model, wherein: a plurality of connection holes are opened on the connection plate.

[0017] As a preferred solution of the non-pneumatic electric tire described in the utility model, the rotor of the permanent magnet motor is fixedly connected to an end cover on one side in the axial direction, and a plurality of studs corresponding to the connecting holes are arranged on the end cover, and when the end cover is tightly attached to the connecting plate, one end of the stud away from the end cover extends out of the connecting plate.

[0018] The beneficial effects of the utility model include: the tread crown and the support body, and the support body and the wheel hub are detachably connected together, which makes disassembly more convenient and facilitates later maintenance; the support body adopts a design of a first support unit and several layers of second support units, and each support part is a symmetrical structure, each first support part is fixed to the outside of the fixed inner ring, and the second support part is closely connected to the two adjacent second support parts of the corresponding adjacent inner layer to form a continuous bendable structure, and a reliable support layer is formed by stacking, which provides uniform support force, evenly disperses pressure, and improves the bearing capacity of the support body. The support part has good bending resistance under bending stress, which helps to resist complete deformation caused by external loads, thereby improving the stability and durability of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0021] Figure 2 It is a three-dimensional structural diagram of the support body in the utility model.

[0022] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0023] Figure 4 It is a three-dimensional structural diagram of the tire crown in the utility model.

[0024] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0025] Figure 6 It is a three-dimensional structural diagram of the wheel hub in the utility model.

[0026] In the figure, 100 is a wheel hub, 101 is a wheel hub body, 101a is an inner connecting protrusion, 102 is a connecting disk, 102a is a supporting plate, 102b is a connecting hole, 200 is a supporting body, 201 is a first supporting unit, 201a is a first supporting part, 202 is a second supporting unit, 202a is a second supporting part, 202b is an outer connecting protrusion, 203 is a fixed inner ring, 203a is an inner connecting groove, 203b is an inner flange gap, 300 is a tire crown, 301 is a tire strip, 302 is a tire outer, 302a is an outer connecting groove, 302b is an outer flange gap, 400 is a permanent magnet motor, 401 is a rotor, 402 is an end cover, 403 is a stud, an X through hole, and an S mounting port. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figure 1 to Figure 5 , which is the first embodiment of the utility model, provides a non-pneumatic tire, which is easy to disassemble and assemble, saving subsequent maintenance costs.

[0032] A non-pneumatic tire includes a crown 300, the inner side of which is provided with a plurality of circumferential array of external connection grooves 302a; the inner side of the crown 300 is connected to a support body 200, the inner side of the support body 200 is connected to a wheel hub 100, the wheel hub 100 is connected to a permanent magnet motor 400, and the crown 300 and the support body 200 are both made of polyurethane material.

[0033] Specifically, the support body 200 includes a fixed inner ring 203, a first support unit 201 is fixed on the outer periphery of the fixed inner ring 203, a plurality of second support units 202 are arranged in sequence from the inside to the outside along the radial direction on the outer periphery of the first support unit 201, the outer ring of the outermost second support unit 202 is connected to the inner edge of the crown 300, and a plurality of external connection protrusions 202b corresponding to the external connection grooves 302a are arranged on the outer side of the outermost second support unit 202, and the external connection protrusions 202b can be just inserted into the external connection grooves 302a, and the external connection The two ends of the protrusion 202b in the axial direction respectively abut against the crown 300, and the inner ring of the fixed inner ring 203 is provided with a plurality of inner connecting grooves 203a in a circumferential array; the hub 100 includes a hub body 101, and the outer ring of the hub body 101 is provided with a plurality of inner connecting protrusions 101a in a circumferential array and corresponding to the inner connecting grooves 203a one by one, and the fixed inner ring 203 is just sleeved on the inner connecting protrusions 101a through the inner connecting grooves 203a, and the two ends of the inner connecting protrusions 101a in the axial direction both abut against the fixed inner ring 203.

[0034] The outer connecting protrusion 202b and the inner connecting protrusion 101a are both T-shaped, and the crown 300 includes an outer tire 302, and the outer tire 302 should also have a friction pattern to increase friction (this is a prior art, not shown in the drawings, but does not affect the understanding of those skilled in the art), and tire strips 301 are fixed on the left and right sides of the outer tire 302, and a plurality of outer connecting grooves 302a are arranged on the inner side of the outer tire 302. The outer tire 302 on both sides of the outer connecting groove 302a has an annular outer flange gap 302b between the two tire strips 301, and the outer edge of the outer flange gap 302b exceeds the outer edge of the outer connecting groove 302a, and the inner diameter of the tire strip 301 is not greater than the inner diameter of the outer tire 302; an annular inner flange gap 203b is respectively provided on the fixed inner ring 203 on both sides of the inner connecting groove 203a in the axial direction, and the outer edge of the inner flange gap 203b exceeds the outer edge of the inner connecting groove 203a ; When installing this embodiment, use a tool to pry open the fixed inner ring 203 along the inner flange gap 203b, align the inner connecting groove 203a with the inner connecting protrusion 101a, and insert the inner connecting protrusion 101a into the inner connecting groove 203a until the two sides of the inner connecting protrusion 101a respectively abut against the fixed inner ring 203 on the side away from each other in the inner flange gap 203b, thereby realizing the connection between the support body 200 and the hub body 101, and use a tool to pry open the tire strip 301 along the outer flange gap 302b, align the outer connecting groove 302a with the outer connecting protrusion 202b, and insert the outer connecting protrusion 202b into the outer connecting groove 302a until the outer connecting protrusion 202b abuts against the two tire strips 301; the tire crown 300 and the support body 200, and the support body 200 and the wheel hub 100 are respectively detachably connected together, which is more convenient to disassemble and convenient for later maintenance.

[0035] like Figure 2As shown, the first support unit 201 includes a plurality of first support portions 201a in a circumferential array arranged on the outer ring of the fixed inner ring 203, a through hole X penetrating the first support portion 201a in the axial direction is opened on the first support portion 201a, and the outer edges of the first support portion 201a and the through hole X are both arc-shaped, and the second support unit 202 includes a plurality of second support portions 202a in a circumferential array and corresponding to the first support portions 201a one by one, and the second support portions 202a have the same structure as the first support portions 201a, the plurality of second support portions 202a in the innermost layer are fixed to the outer peripheries of the corresponding two adjacent first support portions 201a, and the plurality of second support portions 202a in other layers are respectively fixed to the outer peripheries of the corresponding two adjacent second support portions 202a in the inner layer.

[0036] The support body 200 adopts the design of a first support unit 201 and several layers of second support units 202. Each support part is a symmetrical structure. Each first support part 201a is fixed to the outside of the fixed inner ring 203, and the second support part 202a is connected to the two adjacent second support parts 202a of the corresponding adjacent inner layer to form a continuous bendable structure. A reliable support layer is formed by stacking, providing uniform support force, uniformly dispersing pressure, and improving the bearing capacity of the support body 200. The support part has good bending resistance under bending stress, which helps to resist complete deformation caused by external loads, thereby improving the stability and durability of the tire; in addition, the support body 200 contains a large number of through holes X, which is beneficial to reducing the overall weight of the tire, which is very beneficial for application scenarios that need to reduce weight (such as aerospace, automobiles, etc.).

[0037] Example 2

[0038] Reference Figure 1 and Figure 6 , which is the second embodiment of the utility model. This embodiment is different from the previous embodiment in that it is a non-pneumatic electric tire, which can further facilitate the connection between the wheel hub 100 and the motor.

[0039] Specifically, the wheel hub 100 further includes a connecting disk 102 , and a plurality of supporting plates 102 a are arranged on the outer periphery of the connecting disk 102 . The plurality of supporting plates 102 a are fixed to the inner ring of the wheel hub body 101 .

[0040] Specifically, the rotor 401 of the permanent magnet motor 400 is fixedly connected to the connecting disk 102, one side of the support plate 102a in the axial direction is arranged close to one side of the fixed inner ring 203 in the axial direction and one side of the support plate 102a in the axial direction does not exceed one side of the fixed inner ring 203 in the axial direction, and an installation port S for accommodating the permanent magnet motor 400 is formed between the other side of the support plate 102a in the axial direction, the other side of the fixed inner ring 203 in the axial direction, and the inner wall of the fixed inner ring 203, and a plurality of connecting holes 102b are opened on the connecting disk 102, and an end cover 402 is fixedly connected to one side of the rotor 401 of the permanent magnet motor 400 in the axial direction, and a plurality of studs 403 corresponding to the connecting holes 102b are arranged on the end cover 402, and when the end cover 402 is tightly attached to the connecting disk 102, one end of the stud 403 away from the end cover 402 extends out of the connecting disk 102.

[0041] The stator of the permanent magnet motor 400 is fixedly connected to the frame. The permanent magnet motor 400 and the connection method between the permanent magnet motor 400 and the frame are both existing technologies and are not improvements of the present application, so they will not be described in detail here. The permanent magnet motor 400 is small in size and can provide installation space for it in the wheel hub body 101. When the permanent magnet motor 400 is installed on the wheel hub 100, the stud 403 is aligned with the corresponding connecting hole 102b. Several studs 403 are plugged into the connecting disk 102 one by one through the corresponding connecting holes 102b. The end cover 402 fits tightly on the connecting disk 102. Several reinforcing nuts are screwed onto the studs 403 one by one until the reinforcing nuts are pressed against the connecting disk 102, thereby realizing the connection between the permanent magnet motor 400 and the wheel hub 100. The installation is convenient. In the present application, the permanent magnet motor 400 is preferably used to provide the tire with forward power.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. The front-to-back direction described in this application refers to the direction perpendicular to the paper plane and parallel to the front-to-back direction with reference to the main view. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the technical solution of the utility model.

Claims

1. A non-pneumatic electric tire, characterized in that: These include, A tread crown (300), wherein the inner side of the tread crown (300) is provided with a plurality of external connection sink grooves (302a) in a circumferential array; The support body (200) comprises a fixed inner ring (203), a first support unit (201) is fixed on the outer periphery of the fixed inner ring (203), a plurality of layers of second support units (202) are arranged in sequence from the inside to the outside in the radial direction on the outer periphery of the first support unit (201), the outer ring of the outermost layer of the second support unit (202) is connected to the inner edge of the tread crown (300), a plurality of external connection protrusions (202b) corresponding to the external connection grooves (302a) are arranged on the outer side of the outermost second support unit (202), the external connection protrusions (202b) can be just inserted into the external connection grooves (302a), and the two ends of the external connection protrusions (202b) in the axial direction respectively contact the tread crown (300), and the inner ring of the fixed inner ring (203) is provided with a plurality of internal connection grooves (203a) in a circumferential array; The wheel hub (100) comprises a wheel hub body (101), wherein the outer ring of the wheel hub body (101) is provided with a plurality of inner connection protrusions (101a) in a circumferential array and corresponding one-to-one with the inner connection recessed grooves (203a), and the fixed inner ring (203) is just sleeved on the inner connection protrusions (101a) through the inner connection recessed grooves (203a), and both ends of the inner connection protrusions (101a) in the axial direction are in contact with the fixed inner ring (203).

2. The non-pneumatic electric tire according to claim 1, characterized in that: The first support unit (201) comprises a plurality of first support portions (201a) arranged in a circumferential array on the outer ring of the fixed inner ring (203), and the first support portion (201a) is provided with a through hole (X) penetrating the first support portion (201a) in an axial direction.

3. The non-pneumatic electric tire according to claim 2, characterized in that: The second support unit (202) comprises a plurality of second support portions (202a) in a circular array and corresponding one to one with the first support portions (201a); the second support portions (202a) and the first support portions (201a) have the same structure; the plurality of second support portions (202a) in the innermost layer are fixed to the outer peripheries of two corresponding adjacent first support portions (201a); and the plurality of second support portions (202a) in other layers are respectively fixed to the outer peripheries of two corresponding adjacent second support portions (202a) in the inner layer.

4. The non-pneumatic electric tire according to any one of claims 1 to 3, characterized in that: The wheel hub (100) further comprises a connecting disk (102), a plurality of supporting plates (102a) are arranged on the outer periphery of the connecting disk (102), and the plurality of supporting plates (102a) are fixed to the inner ring of the wheel hub body (101).

5. The non-pneumatic electric tire according to claim 4, characterized in that: It also includes a permanent magnet motor (400), wherein a rotor (401) of the permanent magnet motor (400) is fixedly connected to a connection disk (102).

6. The non-pneumatic electric tire according to claim 5, characterized in that: One side of the support plate (102a) in the axial direction is arranged close to one side of the fixed inner ring (203) in the axial direction and one side of the support plate (102a) in the axial direction does not exceed one side of the fixed inner ring (203) in the axial direction; and an installation opening (S) for accommodating the permanent magnet motor (400) is formed between the other side of the support plate (102a) in the axial direction, the other side of the fixed inner ring (203) in the axial direction, and the inner wall of the fixed inner ring (203).

7. The non-pneumatic electric tire according to claim 6, characterized in that: The connection plate (102) is provided with a plurality of connection holes (102b).

8. The non-pneumatic electric tire according to claim 6, characterized in that: An end cover (402) is fixedly connected to one side of the rotor (401) of the permanent magnet motor (400) in the axial direction. A plurality of studs (403) corresponding to the connection holes (102b) are arranged on the end cover (402). When the end cover (402) is tightly attached to the connection disk (102), one end of the stud (403) away from the end cover (402) extends out of the connection disk (102).

Images