Camping trailer and wheel structure adopting overrunning clutch

Abstract

The utility model relates to the field of camping car accessories, in particular to a camping trailer and a wheel structure adopting an overrunning clutch. An overrunning clutch wheel structure is adopted, and the overrunning clutch wheel structure comprises wheels and a power input disc connected with a power source. The power input disc is connected with the wheels through a clutch device, and the clutch device comprises a clutch output shell linked with the wheels in the circumferential direction and a roller pin guide support linked with the power input disc or integrally constructed with the power input disc; the roller pin guide support is located in the clutch output shell, and linkage and disengagement between the roller pin guide support and the clutch output shell are controlled through the clutch roller. According to the scheme, linkage and disengagement of the wheels and the power transmission structure can be achieved through the clutch structure, and the technical problem that the wheels of the electric trailer cannot rotate in the non-electric-drive state is solved.

Description

Technical Field

[0001] The utility model relates to the field of camping trailer accessories, in particular to a camping trailer and a wheel structure thereof adopting an overrunning clutch. Background Art

[0002] As more and more people attach importance to outdoor health activities, globally, there has been a blowout demand for outdoor energy storage, outdoor work, camping and wilderness activities. When camping, campers arrive at the camping site on foot or by driving a vehicle. Usually in valleys, lakesides or by the sea, campers can build a bonfire, barbecue, have a picnic or sing, which are the most common camping activities.

[0003] However, during the camping process, the vehicle often cannot enter the camping site. Therefore, many things, such as tents, food, etc., usually need to be carried by a trolley and moved to the camping location. The trolley can save physical strength and reduce the handling difficulty. When a traditional camping trolley is in use, since it does not have an electric assistance function and relies entirely on manual dragging, it will be rather laborious to drag the vehicle when carrying a large weight, especially when climbing slopes and crossing grasslands, which is rather difficult.

[0004] At present, some manufacturers have developed camping trolleys with electric assistance. For example, the electric-assisted camping trolley disclosed in the Chinese utility model patent with the application number 202223386885.2 applies a hub motor to a traditional foldable camping trolley, making it easier for people to push the camping trolley. However, such electric-assisted camping trolleys have a drawback: when the motor is powered off, since the motor and the gear transmission structure are locked, the tires are locked and the camping trolley cannot be pushed manually. Summary of the Invention

[0005] In order to solve the above problems, the first object of the utility model is to provide a wheel structure adopting an overrunning clutch. Through the clutch structure, the linkage and disconnection between the wheel and the power transmission structure can be realized, and the technical problem that the wheels of an electric trailer cannot rotate in the state without electric drive can be solved.

[0006] In order to achieve the above object, the utility model adopts the following technical solutions:

[0007] A wheel structure adopting an overrunning clutch includes a wheel and a power input disk connected to a power source; it is characterized in that: a clutch device is used to connect the power input disk and the wheel. The clutch device includes a clutch output shell circumferentially linked with the wheel, and a needle roller guide bracket linked or integrally constructed with the power input disk; the needle roller guide bracket is inside the clutch output shell, and the linkage and disconnection between the needle roller guide bracket and the clutch output shell are controlled by a clutch roller.

[0008] The utility model adopts the above technical solution, which relates to a wheel structure with an overrunning clutch. The power input disk in the wheel structure is connected to the output end of the power source, and a clutch device is adopted between the power input disk and the wheel; the clutch output housing in the clutch device is circumferentially linked to the wheel directly or indirectly, and the needle roller guide bracket is linked to or integrally constructed with the power input disk.

[0009] Furthermore, the needle roller guide bracket is inside the clutch output housing and realizes clutch control by driving the clutch roller.

[0010] When the needle roller guide bracket is in a linked state with the clutch output housing, the power source, the power input disk, the clutch device, and the wheel achieve complete power transmission, so that the driving motor can drive the wheel to rotate. When the needle roller guide bracket is disengaged from the clutch output housing, the wheel is allowed to disengage from the transmission structure, and the wheel can rotate freely, and the wheel can be pushed or pulled by an external force to rotate.

[0011] This solution can realize the linkage and disengagement between the wheel and the power transmission structure through the clutch structure, and solve the technical problem that the wheels of an electric trailer cannot rotate when there is no electric drive.

[0012] In a further embodiment, a limiting groove is constructed on the inner wall of the clutch output housing. When the needle roller guide bracket pushes the clutch roller into the limiting groove in the forward direction, the needle roller guide bracket is positively linked to the clutch output housing; when the wheel and the clutch output housing rotate relative to the clutch bracket in the reverse direction and push the clutch roller out of the limiting groove, the needle roller guide bracket is not circumferentially linked to the clutch output housing.

[0013] Preferably, a plurality of limiting grooves are circumferentially and regularly arranged on the inner wall of the clutch output housing, and the needle roller guide bracket is constructed as a polygon with an outer diameter adapted to the inner wall of the clutch output housing; the clutch rollers are distributed inside the clutch output housing between the plurality of edges of the needle roller guide bracket.

[0014] The operating principle of the above clutch solution is as follows: when the power input disk drives the needle roller guide bracket to rotate forward, each edge of the needle roller guide bracket pushes the clutch roller in its compliant direction into the limiting groove. During the continuous rotation of the needle roller guide bracket, it cannot cross over the clutch roller, and thus drives the clutch output housing and the wheel to rotate positively in linkage through the clutch roller, so as to realize electric drive. When the wheel and the clutch output housing rotate relative to the needle roller guide bracket in the reverse direction and push the clutch roller out of the limiting groove, the needle roller guide bracket is not circumferentially linked to the clutch output housing, the wheel is disengaged from the power input disk, and the wheel can rotate freely, and the wheel can be pushed or pulled by an external force to rotate.

[0015] With the above - mentioned solution of the cooperation between the limit groove and the clutch roller, on the basis of realizing the clutch, through the cooperation between the clutch roller and the limit groove, the clutch output structure can be made more stable and reliable, and the power output intensity can also be higher.

[0016] In a further solution, a clutch needle retainer is arranged inside the clutch output housing, and the clutch roller is magnetically adsorbed on the surface of the clutch needle retainer. In this solution, the clutch needle retainer adsorbs the clutch roller to prevent the clutch roller from moving randomly. In a specific implementation, the clutch roller is constructed as a magnetic roller, and the clutch needle retainer is constructed as a magnetic component capable of adsorbing the magnetic roller. Here, the magnetic component refers to the component material that can be adsorbed by a magnet, including but not limited to iron (Fe), nickel (Ni), cobalt (Co), etc.

[0017] In a further implementation, a protrusion adapted to the inner contour of the needle guide bracket is constructed at one end of the power input disk, and the needle guide bracket is sleeved on the protrusion and is circumferentially linked with it. In this solution, the needle guide bracket is nested on the protrusion of the power input disk and is linked with it. The needle guide bracket provides sufficient strength to ensure reliable connection and meet the requirement of high - strength power output.

[0018] In a specific solution, the power input disk is rotatably arranged on the fixed shaft through a bearing.

[0019] In a further solution, the clutch output housing is embedded in the center of the wheel and is circumferentially linked with it. In this solution, the clutch output housing is embedded in the center of the wheel. On the one hand, the strength of the circumferential linkage is higher, and on the other hand, the structure is simpler and the volume is smaller. In a specific solution, a groove is arranged at the center of the wheel. The groove includes a central area and a plurality of edge areas radially protruding outward along the edge of the central area; the clutch output housing is installed in the groove and its outer contour is adapted to the groove.

[0020] The second object of the present utility model is to provide a camping trailer, which is characterized in that: the above - mentioned camping trailer is adopted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded view of the wheel structure with an overrunning clutch involved in Embodiment 1.

[0022] Figure 2 It is an installation schematic diagram of the wheel and the clutch device.

[0023] Figure 3 It is a schematic diagram of the power input disk and the clutch device installed on the fixed shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0027] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0029] Embodiment 1:

[0030] As shown Figures 1 to 3 in the figure, the wheel structure of this embodiment adopts an overrunning clutch, including a wheel 1 and a power input disk 2 connected to a power source. The power input disk 2 is rotatably arranged on a fixed shaft 3 through a bearing, and a clutch device 4 is used to connect the power input disk 2 and the wheel 1. The clutch device 4 includes a clutch output housing 41 that is circumferentially linked with the wheel 1, and a needle roller guide bracket 42 that is linked or integrally constructed with the power input disk 2. The needle roller guide bracket 42 is inside the clutch output housing 41, and the linkage and disengagement between the needle roller guide bracket 42 and the clutch output housing 41 are controlled by a clutch roller 43.

[0031] In the wheel 1 structure, the power input disk 2 is connected to the output end of the power source, and a clutch device 4 is used between the power input disk 2 and the wheel 1. The clutch output housing 41 in the clutch device 4 is circumferentially linked with the wheel 1 directly or indirectly, and the needle roller guide bracket 42 is linked or integrally constructed with the power input disk 2. Further, the needle roller guide bracket 42 is inside the clutch output housing 41 and clutch control is achieved by driving the clutch roller 43. When the needle roller guide bracket 42 and the clutch output housing 41 are in a linked state, the power source, the power input disk 2, the clutch device 4 and the wheel 1 achieve complete power transmission, so that the driving motor can drive the wheel 1 to rotate. When the needle roller guide bracket 42 and the clutch output housing 41 are disengaged, the wheel 1 is allowed to disengage from the transmission structure, and the wheel 1 can rotate freely, and the wheel 1 can be pushed or pulled by an external force to rotate.

[0032] Through the clutch structure in this solution, the linkage and disengagement between the wheel 1 and the power transmission structure can be achieved, solving the technical problem that the wheel 1 of an electric trailer cannot rotate in a state without electric drive.

[0033] In a further embodiment, a limiting groove 44 is formed on the inner wall of the clutch output housing 41. When the needle roller guide bracket 42 pushes the clutch roller 43 into the limiting groove 44 in the forward direction, the needle roller guide bracket 42 and the clutch output housing 41 are positively linked. When the wheel 1 and the clutch output housing 41 rotate in the reverse direction relative to the clutch bracket and push the clutch roller 43 out of the limiting groove 44, the needle roller guide bracket 42 and the clutch output housing 41 are not circumferentially linked. Preferably, a plurality of limiting grooves 44 are circumferentially and regularly arranged on the inner wall of the clutch output housing 41, and the needle roller guide bracket 42 is constructed as a polygon with an outer diameter adapted to the inner wall of the clutch output housing 41, which is shown as a triangle in the figure. The clutch roller 43 is distributed inside the clutch output housing 41 between the multiple edges of the needle roller guide bracket 42. The operating principle of the above clutch solution is as follows: When the power input disc 2 drives the needle roller guide bracket 42 to rotate forward, each edge of the needle roller guide bracket 42 pushes the clutch roller 43 in its compliant direction into the limiting groove 44. During the continuous rotation of the needle roller guide bracket 42, it cannot cross over the clutch roller 43. Thus, the clutch output housing 41 and the wheel 1 are driven to rotate positively and linked through the clutch roller 43, thereby achieving electric drive. When the wheel 1 and the clutch output housing 41 rotate in the reverse direction relative to the needle roller guide bracket 42 and push the clutch roller 43 out of the limiting groove 44, the needle roller guide bracket 42 and the clutch output housing 41 are not circumferentially linked, the wheel 1 is disengaged from the power input disc 2, and the wheel 1 can rotate freely, and the wheel 1 can be pushed or pulled by an external force to rotate. In addition, by adopting the above solution of the cooperation between the limiting groove 44 and the clutch roller 43, on the basis of realizing the clutch, the clutch output structure can be made more stable and reliable through the cooperation between the clutch roller 43 and the limiting groove 44, and the power output intensity can also be higher.

[0034] In a further solution, a clutch needle holder 45 is arranged inside the clutch output housing 41, and the clutch roller 43 is magnetically adsorbed on the surface of the clutch needle holder 45. In this solution, the clutch needle holder 45 adsorbs the clutch roller 43 to prevent the scattered movement of the clutch roller 43. In a specific embodiment, the clutch roller 43 is constructed as a magnetic roller, and the clutch needle holder 45 is constructed as a magnetic component capable of adsorbing the magnetic roller. The magnetic component here refers to the component material that can be adsorbed by a magnet, including but not limited to iron (Fe), nickel (Ni), cobalt (Co), etc.

[0035] In a further embodiment, a protrusion 21 adapted to the inner contour of the needle roller guide bracket 42 is formed at one end of the power input disc 2, and the needle roller guide bracket 42 is sleeved on the protrusion 21 and is circumferentially linked with it. In this solution, the needle roller guide bracket 42 is nested on the protrusion 21 of the power input disc 2 and is linked with it. The needle roller guide bracket 42 provides sufficient strength to ensure reliable connection and meet the requirement of high-intensity power output.

[0036] In a further solution, the clutch output housing 41 is embedded in the center of the wheel 1 and is circumferentially linked thereto. In this solution, the clutch output housing 41 is embedded in the center of the wheel 1. In this way, on the one hand, the strength of the circumferential linkage is higher, and on the other hand, the structure is simpler and the volume is smaller. In a specific solution, a groove 11 is provided at the center of the wheel 1. The groove 11 includes a central region 111 and a plurality of edge regions 112 that radially protrude outward along the edge of the central region 111. The clutch output housing 41 is fitted in the groove 11 and its outer contour is adapted to the groove 11.

[0037] Embodiment 2:

[0038] The second object of the present utility model is to provide a camping trailer that adopts the camping trailer described in Embodiment 1.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principles and purposes of the present utility model.

Claims

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

2. The wheel structure with overrunning clutch according to claim 1, characterized in that: A limiting groove (44) is formed on the inner wall of the clutch output housing (41); when the needle roller guide bracket (42) pushes the clutch roller (43) into the limiting groove (44) in the positive direction, the needle roller guide bracket (42) and the clutch output housing (41) are in positive linkage; when the wheel (1) and the clutch output housing (41) rotate in the opposite direction relative to the clutch bracket to push the clutch roller (43) out of the limiting groove (44), the needle roller guide bracket (42) and the clutch output housing (41) are not in circumferential linkage.

3. The wheel structure with overrunning clutch according to claim 2, characterized in that: The inner wall of the clutch output housing (41) is provided with a plurality of limit grooves (44) arranged regularly in a circumferential direction; the needle roller guide bracket (42) is constructed as a polygon whose outer diameter matches the inner wall of the clutch output housing (41); and the clutch rollers (43) are distributed inside the clutch output housing (41) between a plurality of edges and corners of the needle roller guide bracket (42).

4. The wheel structure with overrunning clutch according to claim 2, characterized in that: A clutch needle roller holder (45) is arranged inside the clutch output housing (41), and the clutch roller (43) is magnetically adsorbed on the surface of the clutch needle roller holder (45).

5. The wheel structure with overrunning clutch according to claim 4, characterized in that: The clutch roller (43) is constructed as a magnetic roller, and the clutch needle roller holder (45) is constructed as a magnetic attraction component capable of absorbing the magnetic roller.

6. The wheel structure with overrunning clutch according to claim 1, characterized in that: One end of the power input disc (2) is formed with a protrusion (21) adapted to the inner contour of a needle roller guide bracket (42), and the needle roller guide bracket (42) is sleeved on the protrusion (21) and circumferentially linked thereto.

7. The wheel structure with overrunning clutch according to claim 1, characterized in that: The power input disc (2) is rotatably arranged on the fixed shaft (3) via a bearing.

8. The wheel structure with overrunning clutch according to claim 1, characterized in that: The clutch output housing (41) is embedded in the center of the wheel (1) and moves in circumferential direction thereof.

9. The wheel structure with overrunning clutch according to claim 8, characterized in that: A groove (11) is provided at the center of the wheel (1), the groove (11) comprising a central area (111) and a plurality of edge areas (112) protruding radially outward along the edge of the central area (111); the clutch output housing (41) is embedded in the groove (11) and its outer contour is adapted to the groove (11).

10. A camping trailer, characterized in that: A camping trailer according to any one of claims 1 to 9 is used.

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