Camping trailer and wheel structure thereof using overrunning clutch

Abstract

The present disclosure relates to the field of camping vehicle accessories, and in particular, relates to a camping trailer and a wheel structure thereof using an overrunning clutch. The wheel structure using an overrunning clutch comprises a wheel and a power input disc connected to a power source, wherein the power input disc is connected to the wheel by means of a clutch device. The clutch device comprises a clutch output housing circumferentially linked to the wheel, and a needle roller guide support linked to or integrally constructed with the power input disc, wherein the needle roller guide support is located inside the clutch output housing; and the linkage and disengagement between the needle roller guide support and the clutch output housing are controlled by means of clutch rollers. The solution can realize the linkage and disengagement between a wheel and a power transmission structure by means of a clutch structure, thereby solving the technical problem of wheels of electric trailers being unable to rotate or having great rotational resistance in the absence of electric drive.

Description

A camping trailer and its wheel structure using overrunning clutch

[0001] Cross-reference to Related Applications

[0002] The present disclosure claims priority to the Chinese patent application No. 2024219680970, filed on August 13, 2024, and entitled "A camping trailer and its wheel structure using overrunning clutch", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of camping car accessories, and in particular to a camping trailer and its wheel structure using overrunning clutch. BACKGROUND

[0004] With more and more people paying attention to outdoor health activities, in the global range, whether outdoor energy storage, outdoor work, camping and field activities have ushered in a boom in demand. When camping, campers walk or drive vehicles to the camping site, usually in valleys, lakesides, seashores, where campers can have bonfires, barbecues, picnics or sing songs, which is also the most common camping activity.

[0005] However, during the camping process, the car often cannot enter the camping site, so many things, such as tents, food, etc., usually need to be carried by a trolley to the place where camping is needed. The trolley can save physical effort and reduce the difficulty of carrying. The traditional camping trolley, when in use, does not have the function of electric power assistance and relies entirely on human power to pull, which will cause the vehicle to be more laborious to pull when carrying a larger weight, especially when climbing and passing through grasslands, which is more difficult.

[0006] Currently, some manufacturers have developed camping cars with electric power assistance, which is to apply a hub motor to the traditional foldable camping car, so that people can save effort when pushing the camping car. However, this type of electric power assistance camping car has a disadvantage: when the motor is powered off, the tire is locked due to the locking of the motor and gear transmission structure or the large self-rotation resistance, which cannot be pushed by hand. In addition, without the clutch, the wheels may reverse to drive the motor to rotate, which is not conducive to the service life of the motor and rotating parts.

[0007] DISCLOSURE

[0008] In order to solve the above problems, the first purpose of the present disclosure is to provide a wheel structure using overrunning clutch, which can realize the linkage and disengagement of the wheel and the power transmission structure through the clutch structure, solving the technical problem that the electric trailer wheel cannot rotate or has large rotation resistance in the state of no electric drive.

[0009] To achieve the above-mentioned purposes, the present disclosure adopts the following technical solutions:

[0010] The wheel structure with overrunning clutch comprises a wheel and a power input disc connected with a power source, characterized in that: a clutch device is arranged between the power input disc and the wheel, the clutch device comprises a clutch output shell linked with the wheel in the circumferential direction and a needle guide bracket linked with the power input disc or integrally constructed; the needle guide bracket is arranged inside the clutch output shell and controls the linkage and disconnection between the needle guide bracket and the clutch output shell through a clutch roller.

[0011] The present disclosure adopts the above technical solution, which relates to a wheel structure with overrunning clutch. In the wheel structure, the power input disc is connected to the output end of the power source, and a clutch device is arranged between the power input disc and the wheel. The clutch output shell in the clutch device is directly or indirectly linked with the wheel in the circumferential direction, and the needle guide bracket is linked with the power input disc or integrally constructed.

[0012] Optionally, the needle guide bracket is arranged inside the clutch output shell and the clutch control is realized through the driving clutch roller.

[0013] In the linkage state of the needle guide bracket and the clutch output shell, the power source, the power input disc, the clutch device and the wheel realize complete power transmission, so that the driving motor can drive the wheel to rotate. When the needle guide bracket and the clutch output shell are disconnected, the wheel and the transmission structure are disconnected, and the wheel can rotate freely and can be pushed or pulled by external force.

[0014] The present scheme can realize the linkage and disconnection of the wheel and the power transmission structure through the clutch structure, solving the technical problem that the wheel of the electric trailer cannot rotate or has large rotation resistance in the state of no electric drive.

[0015] Optionally, a limiting groove is formed on the inner wall of the clutch output shell. When the needle guide bracket pushes the clutch roller into the limiting groove in the forward direction, the needle guide bracket and the clutch output shell are forwardly linked. When the wheel and the clutch output shell rotate in the reverse direction relative to the clutch bracket to push the clutch roller out of the limiting groove, the needle guide bracket and the clutch output shell are not circumferentially linked.

[0016] Optionally, a plurality of limiting grooves are regularly arranged on the inner wall of the clutch output shell, and the needle guide bracket is constructed as a polygon with an outer diameter matching the inner wall of the clutch output shell. The clutch roller is distributed inside the clutch output shell between the plurality of edges of the needle guide bracket.

[0017] The operation principle of the above clutching scheme is: when the power input disc drives the needle guide support to rotate forward, each corner of the needle guide support pushes the clutching roller in its compliance direction into the limiting groove, and the needle guide support cannot pass the clutching roller during the continuous rotation process, thereby driving the clutching output shell and the wheel to rotate forward in linkage, so as to realize electric driving. When the wheel and the clutching output shell rotate reversely relative to the needle guide support, the clutching roller is pushed out of the limiting groove, and the needle guide support is not linked with the clutching output shell in the circumferential direction, so that the wheel is disconnected with the power input disc and can rotate freely and can be driven or pulled by external force. That is, the linkage and disconnection state of the clutching device is determined by the relative motion state of the clutching output shell and the needle guide support. The clutching output shell is directly connected with the shell of the wheel, and the needle guide support is directly connected with the reduction motor. The rotation direction of the needle guide support (i.e. the output rotation direction of the motor) is defined as the positive direction. In the case that the relative rotation speed of the needle guide support is greater than that of the clutching output shell, the clutching roller is pushed into the limiting groove to drive the wheel to rotate counterclockwise or clockwise. In the case that the relative rotation speed of the clutching output shell is greater than that of the needle guide support (i.e. the rotation speed of the shell of the wheel is in the same direction and the relative rotation speed is greater than the output rotation speed of the reduction motor), the clutching roller is out of the limiting groove and is in the disconnection state.

[0018] The above scheme of the limiting groove cooperating with the clutching roller can realize clutching, and can make the clutching output structure more stable and reliable and the power output more powerful through the cooperation of the clutching roller and the limiting groove.

[0019] Optionally, the clutching output shell is internally provided with a clutching needle holder, and the clutching roller is magnetically adsorbed on the surface of the clutching needle holder. In this scheme, the clutching needle holder adsorbs the clutching roller to avoid the motion disorder of the clutching roller. In a specific embodiment, the clutching roller is constructed as a magnetic roller, and the clutching needle holder is constructed as a magnetic adsorption component capable of adsorbing the magnetic roller. The magnetic adsorption component refers to a component material that can be adsorbed by a magnet, including but not limited to iron (Fe), nickel (Ni), cobalt (Co), etc.

[0020] Optionally, one end of the power input disc is constructed with a protrusion matched with the inner contour of the needle guide support, and the needle guide support is sleeved on the protrusion and linked with it in the circumferential direction. In this scheme, the needle guide support is nested on the protrusion of the power input disc and linked with it. The needle guide support provides sufficient strength to ensure reliable connection and meet the demand of high-power output.

[0021] Optionally, the power input disc is rotatably arranged on the fixed shaft through a bearing.

[0022] Optionally, the clutch output shell is embedded at the wheel center and linked with the wheel periphery. In this case, the clutch output shell is embedded at the wheel center, so that the strength of the periphery linkage is higher, and the structure is simpler and smaller. In a specific case, the wheel center is provided with a groove, the groove including a central area and a plurality of edge areas radially outwardly protruding along the edge of the central area; the clutch output shell is embedded in the groove and its outer contour is matched with the groove.

[0023] Optionally, the wheel and the clutch output shell are detachably connected.

[0024] Optionally, the wheel and the clutch output shell are detachably connected.

[0025] The second object of the present disclosure is to provide a camping trailer comprising the wheel structure with overrunning clutch as described in any of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be considered as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Fig. 1 is an exploded view of the wheel structure with overrunning clutch provided by the embodiments of the present disclosure;

[0028] Fig. 2 is an exploded view of the wheel structure with overrunning clutch provided by the embodiments of the present disclosure and with a motor;

[0029] Fig. 3 is a schematic view of the installation of the wheel and the clutch device;

[0030] Fig. 4 is a schematic view of the installation of the wheel and the clutch output shell;

[0031] Fig. 5 is a schematic view of the installation of the power input disc and the clutch device on the fixed shaft.

[0032] Fig. 1 is an exploded view of the wheel structure with overrunning clutch provided by the embodiments of the present disclosure; DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure are described below in detail with reference to examples shown in the drawings, wherein the same or similar numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as limiting the present disclosure.

[0034] In the description of the present disclosure, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0036] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0037] In the present disclosure, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] As shown in FIG. 1-5, the present embodiment adopts a wheel structure with overrunning clutch, comprising a wheel 1, and a power input disc 2 connected with a power source. The power input disc 2 is configured to be connected with a power source, such as a transmission shaft or a motor output shaft of a camping trailer, to receive rotating power, and is rotatably arranged on a fixed shaft 3 through a bearing. The power input disc 2 is connected with the wheel 1 through a clutch device 4, and can transmit the rotating input of the power source to the clutch device 4. The wheel 1 is rotatably connected with the body structure of the camping trailer through the fixed shaft 3, i.e. the wheel 1 can freely rotate around the fixed shaft 3. The clutch device 4 comprises a clutch output shell 41 linked with the wheel 1 in the circumferential direction, and a needle roller guide bracket 42 linked with the power input disc 2 or integrally constructed. The needle roller guide bracket 42 is inside the clutch output shell 41, and the linkage and disconnection between the needle roller guide bracket 42 and the clutch output shell 41 are controlled through a clutch roller 43.

[0039] The power input disc 2 in the wheel 1 structure is connected to the output end of the power source, and the clutch device 4 is adopted between the power input disc 2 and the wheel 1. The clutch output shell 41 in the clutch device 4 is directly or indirectly linked with the wheel 1 in the circumferential direction, and the needle roller guide bracket 42 is linked with the power input disc 2 or integrally constructed. Alternatively, the needle roller guide bracket 42 is inside the clutch output shell 41 and the clutch control is realized through the driving clutch roller 43. In the linkage state of the needle roller guide bracket 42 and the clutch output shell 41, the power source, the power input disc 2, the clutch device 4 and the wheel 1 realize complete power transmission, so that the driving motor 5 can drive the wheel 1 to rotate. In the disconnection state of the needle roller guide bracket 42 and the clutch output shell 41, the wheel 1 is allowed to be disconnected with the transmission structure, and the wheel 1 can freely rotate, which can be driven or pulled to rotate by external force.

[0040] The present scheme can realize the linkage and disconnection of the wheel 1 and the power transmission structure through the clutch structure, and solve the technical problem that the wheel 1 of the electric trailer cannot rotate or has large rotating resistance in the state without electric driving.

[0041] The clutch output shell 41 in the present embodiment is fixedly connected with the wheel 1 or connected through spline or key groove. The connection mode of the clutch output shell 41 and the wheel 1 is not limited here.

[0042] Optionally, a limiting groove 44 is formed on the inner wall of the clutch output shell 41. When the needle guide bracket 42 pushes the clutch roller 43 into the limiting groove 44 in the positive direction, the needle guide bracket 42 and the clutch output shell 41 are positively linked, that is, the wheel 1 and the transmission structure are matched, and the power source, the power input disc 2, the clutch device 4 and the wheel 1 realize complete power transmission, and the driving motor 5 can drive the wheel 1 to rotate. When the wheel 1 and the clutch output shell 41 rotate in the opposite direction to push the clutch roller 43 out of the limiting groove 44, the needle guide bracket 42 and the clutch output shell 41 are not linked in the circumferential direction, that is, the wheel 1 and the transmission structure are in a disengaged state, and the wheel 1 can rotate freely and can be pushed or pulled by external force. That is, the linkage and disengagement state of the clutch device 4 is determined by the relative motion state of the clutch output shell 41 and the needle guide bracket 42. The clutch output shell 41 is directly connected to the shell of the wheel 1, and the needle guide bracket 42 is directly connected to the speed reduction motor 5. The rotation direction of the needle guide bracket 42 (i.e. the output speed direction of the motor 5) is defined as the positive direction. When the relative rotation speed of the needle guide bracket 42 is greater than that of the clutch output shell 41, the clutch roller 43 is pushed into the limiting groove 44 to drive the wheel 1 to rotate counterclockwise or clockwise. When the relative rotation speed of the clutch output shell 41 is greater than that of the needle guide bracket 42 (i.e. the shell speed of the wheel 1 is in the same direction and the relative speed is greater than the output speed of the speed reduction motor 5), the clutch roller 43 exits the limiting groove and is in a disengaged state. Here, the positive direction refers to the direction of rotation of the needle guide bracket 42, that is, the direction of rotation when the relative rotation speed of the needle guide bracket 42 is greater than that of the clutch output shell 41 is the positive direction; the reverse direction refers to the direction of rotation when the relative rotation speed of the clutch output shell 41 is greater than that of the needle guide bracket 42.

[0043] Optionally, a plurality of limiting grooves 44 are regularly arranged on the inner wall of the clutch output shell 41 in the circumferential direction, and the needle guide bracket 42 is designed as a polygon with an outer diameter matching the inner wall of the clutch output shell 41, and the triangular shape is shown in the figure. Correspondingly, the number of clutch rollers 43 in this embodiment is also multiple, and the plurality of clutch rollers 43 and the plurality of limiting grooves 44 are arranged one by one. The clutch roller 43 is distributed inside the clutch output shell 41 between the plurality of edges of the needle guide bracket 42. Of course, the needle guide bracket 42 can also be designed as a quadrilateral, a pentagon or other polygonal shape, and the needle guide bracket 42 can also be designed as a circular shape or other shape, which is not limited here.

[0044] The shape of the limiting groove 44 in this embodiment is semicircular, and the shape of the clutch roller 43 is cylindrical. Of course, the shape of the limiting groove 44 can also be rectangular, wedge-shaped or other shapes, which are not limited here. The clutch roller 43 is designed to match the shape of the limiting groove 44.

[0045] The operation principle of the above clutching scheme is: in the case that the power input disc 2 drives the needle guide bracket 42 to rotate forward, each corner of the needle guide bracket 42 pushes the clutch roller 43 in its conforming direction into the limiting groove 44, and the needle guide bracket 42 cannot rotate beyond the clutch roller 43 in the process of continuous rotation, thereby driving the clutch output shell 41 and the wheel 1 to rotate forward in linkage, so as to realize electric driving. When the wheel 1 and the clutch output shell 41 rotate reversely relative to the needle guide bracket 42, the clutch roller 43 is pushed out of the limiting groove 44, then the needle guide bracket 42 is not in linkage with the clutch output shell 41 in the circumferential direction, and the wheel 1 is disconnected from the power input disc 2, so that the wheel 1 can rotate freely and can be driven or pulled to rotate by external force. That is, the linkage and disconnection state of the clutch device 4 is determined by the relative motion state of the clutch output shell 41 and the needle guide bracket 42. The clutch output shell 41 is directly connected with the shell of the wheel 1, and the needle guide bracket 42 is directly connected with the reduction motor 5. The rotation direction of the needle guide bracket 42 (i.e. the output rotation direction of the motor 5) is defined as the positive direction. In the case that the relative rotation speed of the needle guide bracket 42 is greater than that of the clutch output shell 41, the clutch roller 43 is pushed into the limiting groove 44 to drive the wheel 1 to rotate counterclockwise or clockwise; in the case that the relative rotation speed of the clutch output shell 41 is greater than that of the needle guide bracket 42 (i.e. the shell rotation speed of the wheel 1 is in the same direction as the output rotation speed of the reduction motor 5, and the relative rotation speed is greater than the output rotation speed of the reduction motor 5), the clutch roller 43 exits the limiting groove and is in a disconnected state. In addition, the above scheme of cooperation between the limiting groove 44 and the clutch roller 43 can realize clutching, and can also make the clutch output structure more stable and reliable, and the power output strength can be higher.

[0046] Optionally, the clutch output shell 41 is internally provided with a clutch needle fixing device 45, and the clutch roller 43 is magnetically adsorbed on the surface of the clutch needle fixing device 45. In this scheme, the clutch needle fixing device 45 adsorbs the clutch roller 43 to avoid the movement of the clutch roller 43. The clutch needle fixing device 45 can also act together with the needle guide bracket 42 to limit the movement of the clutch roller 43 on the guide surface of the power input disc 2. Optionally, the clutch roller 43 is constructed as a magnetic roller, and the clutch needle fixing device 45 is constructed as a magnetic attraction component capable of adsorbing the magnetic roller. The magnetic attraction component refers to a component material that can be adsorbed by a magnet, including but not limited to iron (Fe), nickel (Ni), cobalt (Co), etc.

[0047] Optionally, one end of the power input disc 2 is provided with a protrusion 21 which is adapted to the inner contour of the needle guide bracket 42, the needle guide bracket 42 is sleeved on the protrusion 21 and connected with it in the circumferential direction. In this scheme, the needle guide bracket 42 is nested on the protrusion 21 of the power input disc 2 and connected with it. The needle guide bracket 42 provides sufficient strength to ensure reliable connection and meet the high strength requirement of power output. The shape of the needle guide bracket 42 in this embodiment is triangular, and correspondingly, the shape of the protrusion 21 is also triangular. Of course, the needle guide bracket 42 can also be designed as a quadrilateral, a pentagon or other polygonal shape, and the needle guide bracket 42 can also be designed as a circle or other shape, which is not limited here. Correspondingly, the protrusion 21 can also be designed as a quadrilateral, a pentagon or other polygonal shape, or a circle or other shape, as long as the protrusion 21 can be adapted to the inner contour of the needle guide bracket 42.

[0048] Of course, the needle guide bracket 43 can also be connected with the power input disc 2 in rotation through a rotating shaft or other structure, which is not limited here.

[0049] Optionally, the clutch output shell 41 is embedded in the center of the wheel 1 and connected with it in the circumferential direction. In this scheme, the clutch output shell 41 is embedded in the center of the wheel 1, which on the one hand has higher strength in circumferential connection, and on the other hand has simpler structure and smaller size. Of course, the clutch output shell 41 can also be embedded in other positions of the wheel 1, which is determined according to specific use requirements, which is not limited here. In this embodiment, the clutch output shell 41 is inserted into the wheel 1. Optionally, the center of the wheel 1 is provided with a groove 11, which includes a central area 111 and a plurality of edge areas 112 which protrude radially outward along the edge of the central area 111. The clutch output shell 41 is embedded in the groove 11 and its outer contour is adapted to the groove 11. Of course, a groove can also be formed on the clutch output shell 41, and a protrusion structure matched with the groove is provided on the wheel 1 to realize the insertion of the wheel 1 and the clutch output shell 41.

[0050] In addition, the clutch output shell 41 and the wheel 1 can be detachably connected. The clutch output shell 41 can also be connected with the wheel 1 by using threaded fasteners, insertion, clamping, welding or other ways, which is not limited here.

[0051] The second object of the present disclosure is to provide a camping trailer, which comprises a vehicle body and the above-mentioned wheel structure using overrunning clutch, and the wheel structure is connected with the vehicle body in rotation.

[0052] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present disclosure, and those of ordinary skill in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present disclosure without departing from the principles and spirits of the present disclosure. Industrial applicability

[0054] In summary, the embodiments of the present disclosure provide a wheel structure adopting overrunning clutch and a camping trailer, and the wheel and the power transmission structure can be linked and disconnected through the clutch structure, thereby solving the technical problem that the wheel of the electric trailer cannot rotate or has large rotation resistance in the state without electric drive.

Claims

1. A wheel structure using overrunning clutch, comprising a wheel (1) and a power input disc (2) connected to a power source; characterized in that: The power input disc (2) is connected with the wheel (1) by a clutch device (4), the clutch device (4) comprises a clutch output shell (41) linked with the wheel (1) circumferentially, and a needle guide bracket (42) linked with the power input disc (2) or integrally constructed; the needle guide bracket (42) is inside the clutch output shell (41), and linkage and disconnection between the needle guide bracket (42) and the clutch output shell (41) are controlled by a clutch roller (43).

2. The wheel structure employing overrunning clutches according to claim 1, characterized by: A limiting groove (44) is constructed on the inner wall of the clutch output shell (41), in the case that the needle guide bracket (42) pushes the clutch roller (43) into the limiting groove (44) in a positive direction, the needle guide bracket (42) is positively linked with the clutch output shell (41); in the case that the wheel (1) and the clutch output shell (41) are reversely rotated relative to the clutch support to push the clutch roller (43) out of the limiting groove (44), the needle guide bracket (42) is not circumferentially linked with the clutch output shell (41).

3. The wheel structure employing overrunning clutches according to claim 2, characterized by: A plurality of limiting grooves (44) are regularly arranged circumferentially on the inner wall of the clutch output shell (41), and the needle guide bracket (42) is constructed as a polygon with an outer diameter matched with the inner wall of the clutch output shell (41); the clutch roller (43) is distributed inside the clutch output shell (41) between a plurality of edges of the needle guide bracket (42).

4. A vehicle wheel structure employing overrunning clutches according to claim 2 or 3, characterized in that: A clutch needle fixing device (45) is arranged inside the clutch output shell (41), and the clutch roller (43) is magnetically adsorbed on the surface of the clutch needle fixing device (45).

5. The wheel structure employing overrunning clutches according to claim 4, characterized by: The clutch roller (43) is constructed as a magnetic roller, and the clutch needle fixing device (45) is constructed as a magnetic adsorption component capable of adsorbing the magnetic roller.

6. A vehicle wheel structure employing overrunning clutches according to any one of claims 1 to 5, characterized in that: One end of the power input disc (2) is constructed with a protrusion (21) matched with the inner contour of the needle guide bracket (42), and the needle guide bracket (42) is sleeved on the protrusion (21) and circumferentially linked therewith.

7. A wheel structure employing overrunning clutches according to any one of claims 1 to 6, characterized in that: The power input disc (2) is rotatably arranged on the fixed shaft (3) by a bearing.

8. A vehicle wheel structure employing overrunning clutches according to any one of claims 1 to 7, characterized in that: The clutch output shell (41) is embedded at the center of the wheel (1) and circumferentially linked therewith.

9. The wheel structure employing overrunning clutches according to claim 8, characterized by: A recess (11) is arranged at the center of the wheel (1), and the recess (11) comprises a central area (111) and a plurality of edge areas (112) radially outwardly protruding along the edge of the central area (111); the clutch output shell (41) is embedded in the recess (11) and its outer contour is matched with the recess (11).

10. A vehicle wheel structure employing overrunning clutches as set forth in any one of claims 1 to 9, characterized in that: The wheel (1) and the clutch output shell (41) are detachably connected.

11. A wheel structure employing overrunning clutches as set forth in claim 10, characterized in that: The wheel (1) and the clutch output shell (41) are inserted or clamped.

12. A camping trailer characterized by: A wheel structure employing overrunning clutch is provided.

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