Hub electric motor wiring structure of electric camping cart

Abstract

A hub electric motor wiring structure of an electric camping cart. The hub electric motor wiring structure comprises a foldable cart body (21), wherein fixed wheel assemblies (22) are provided at one end of the foldable cart body (21), and steering wheel assemblies (23) are rotationally arranged at the other end of the foldable cart body (21); each steering wheel assembly (23) comprises a wheel fork (10), a hub electric motor (12) being rotationally connected inside the bottom end of the wheel fork (10), and a rotating shaft (11) is provided at the middle of the top of the wheel fork (10); the rotating shaft (11) is hollow inside, and a wire passes through the middle of the rotating shaft (11) and is connected to the hub electric motor (12); the rotating shaft (11) is provided with a first bearing (13), the first bearing (13) being configured to be connected to the foldable cart body (21); and the wheel fork (10) can rotate relative to the folding cart body (21) by means of the first bearing (13). By means of configuring the rotating shaft (11) to be hollow, the wire can be routed through the rotating shaft (11), which not only avoids interfering with the rotation of the wheel fork (10), but also enhances the aesthetic appearance of the cart body while preventing wire collisions; in addition, the foldable cart body (21) is supported by means of a third bearing (15), so that the structure is rational, which does not affect the rotation of the fork (10), prolonging the service life of bearing components, and enhancing the stability of the foldable cart body (21).

Description

Wheel hub motor wiring structure of electric camping car TECHNICAL FIELD

[0001] The present application relates to the technical field of camping cars, in particular to a wheel hub motor wiring structure of an electric camping car. BACKGROUND

[0002] A camping car is a foldable and towable carrier, which is widely used in transporting things because of its simple use, carrying, convenient storage, time and labor saving. It is now commonly used in outdoor activities or short-distance transportation.

[0003] The existing camping cars are divided into electric and non-electric according to the driving mode. The electric camping car is more popular in the market because it can provide power assistance during use compared to the non-electric camping car. The structural difference between the electric and non-electric camping cars is that the electric camping car replaces the two wheels at the same end or all four wheels of the whole car with wheel hub motors. During use, the movement of the frame is driven by controlling the operation of the wheel hub motor through the controller, thereby realizing the effect of electric power assistance. However, since the wheel hub motor needs to be driven by electricity, an electric wire is needed to supply power to the wheel hub motor. The electric wire of the fixed wheel can be fixed inside the wheel fork for wiring, which can avoid the exposure of the electric wire. However, the electric wire cannot be fixed inside the wheel fork for wiring because the direction wheel needs to rotate to control the direction. The existing method is to directly expose the electric wire outside and not to fix it with the wheel fork to avoid affecting the rotation of the direction wheel. In this way, the electric wire is prone to scratching and bumping during use, which shortens the service life of the electric wire and affects the aesthetics.

[0004] Therefore, there is an urgent need to design a wheel hub motor wiring structure of an electric camping car to overcome one or more of the above deficiencies of the prior art. SUMMARY

[0005] The technical solution adopted by the present application to solve the above technical problems is to provide a wheel hub motor wiring structure of an electric camping car, characterized in that it comprises a folding car body, the folding car body is a converging car body or a folding car body, one end of the folding car body is provided with a fixed wheel assembly, the other end of the folding car body is rotatably provided with a direction wheel assembly, one end of the folding car body provided with the direction wheel assembly is also provided with a direction rod assembly, the direction rod assembly is connected with the direction wheel assembly, and the direction rod assembly can control the rotation of the direction wheel assembly; the direction wheel assembly comprises a wheel fork, a wheel hub motor is rotatably connected to the bottom end of the wheel fork, a shaft is provided in the middle of the top of the wheel fork, the shaft is hollow inside, an electric wire passes through the middle of the shaft to be connected with the wheel hub motor, the shaft is provided with a first bearing, the first bearing is used to connect with the folding car body, and the wheel fork can rotate relative to the folding car body through the first bearing.

[0006] In a preferred embodiment, the rotating shaft is further provided with a second bearing, which is arranged in a spaced manner with the first bearing.

[0007] In a preferred embodiment, the bottom of the rotating shaft is further provided with a third bearing, which is an axial bearing.

[0008] In a preferred embodiment, the first bearing and the second bearing are radial bearings.

[0009] In a preferred embodiment, the first bearing and the second bearing are in a clearance fit with the rotating shaft, and the first bearing and the second bearing are fixedly connected with the outside.

[0010] In a preferred embodiment, the top of the wheel fork is further provided with a buffer, which is sleeved on the outside of the rotating shaft, and the first bearing and the second bearing are located above the buffer.

[0011] In a preferred embodiment, one side of the wheel fork is further provided with a wire passing port, and the electric wire passing through the rotating shaft is connected with the hub motor through the wire passing port.

[0012] In a preferred embodiment, the end of the rotating shaft away from the wheel fork is provided with a thread, and the rotating shaft is connected with a nut through the thread.

[0013] In a preferred embodiment, one side of the wheel fork is connected with at least one wire clamp for fixing the electric wire.

[0014] In a preferred embodiment, one end of the folding vehicle body provided with the direction wheel assembly is further provided with a mounting seat, the direction wheel assembly is connected with the mounting seat, and the first bearing is in a close fit with the mounting seat.

[0015] In a preferred embodiment, the connection between the mounting seat and the rotating shaft is further provided with a box cover, and the electric wire drawn out from the rotating shaft is located in the box cover.

[0016] In a preferred embodiment, the inside of the wheel fork located above the hub motor is further provided with a wire protection member.

[0017] The beneficial effects of the present application are: by setting the rotating shaft as hollow, the electric wire can be routed from the inside of the rotating shaft, which can improve the appearance of the vehicle body, avoid the collision of the wire, and also avoid the influence of the wire on the rotation of the wheel fork, and by setting the third bearing, the folding vehicle body can be supported to improve the stability, and the rotation of the wheel fork is not affected, the structure is reasonable, the service life of the bearing is improved, and the stability of the folding vehicle body is increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a structural schematic diagram of the present application;

[0019] Fig. 2 is a schematic diagram of the cooperation between the direction wheel assembly and the mounting seat of the present application;

[0020] Fig. 3 is a structural schematic diagram of the direction wheel assembly of the present application;

[0021] Fig. 4 is an exploded view of the direction wheel assembly of the present application.

[0022] In the drawings:

[0023] 10, wheel fork; 11, rotating shaft; 12, wheel hub motor; 13, first bearing; 14, second bearing; 15, third bearing; 16, buffer; 17, threading port; 18, screw thread; 19, nut; 20, wire clamp; 21, folding vehicle body; 22, fixed wheel assembly; 23, direction wheel assembly; 24, direction rod assembly; 25, mounting seat; 26, box cover. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through an intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through an intermediate medium. Among them, "fixing" means connecting with each other and the relative positional relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of reference to the drawings, therefore, the orientation language used is to better and more clearly illustrate and understand the embodiments of the present application, and is not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0026] In the embodiments of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features.

[0027] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0028] In this specification, the reference "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the appearance of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments", and the like in various places in the specification are not necessarily all referring to the same embodiment, but mean that "one or more but not all embodiments" of the application, unless otherwise specifically noted. The terms "including", "containing", "having", and their variants mean "including but not limited to", unless otherwise specifically noted. Therefore, the application is not limited by the specific embodiments disclosed below.

[0029] As shown in FIGS. 1-4, the application provides a wheel hub motor 12 wiring structure of an electric camping car, comprising: a folding car body 21, the folding car body 21 is a converging type car body or a folding type car body, one end of the folding car body 21 is provided with a fixed wheel assembly 22, the other end of the folding car body 21 is rotatably provided with a direction wheel assembly 23, one end of the folding car body 21 provided with the direction wheel assembly 23 is further provided with a direction rod assembly 24, the direction rod assembly 24 is connected with the direction wheel assembly 23, and the direction rod assembly 24 can control the rotation of the direction wheel assembly 23; the direction wheel assembly 23 comprises: a fork 10, a wheel hub motor 12 is rotatably connected at the bottom end of the fork 10, a rotating shaft 11 is arranged at the top middle of the fork 10, the rotating shaft 11 is hollow inside, wires pass through the middle of the rotating shaft 11 and are connected with the wheel hub motor 12, first and second bearings 13 and 14 are arranged at intervals on the rotating shaft 11, the first and second bearings 13 and 14 are used to connect with the folding car body 21, and the fork 10 can rotate relative to the folding car body 21 through the first and second bearings 13 and 14;

[0030] Specifically, the folding vehicle body 21 is a folding type vehicle body or a folding type vehicle body, the difference between the two is that the folding type vehicle body is folded in two directions relative to the middle line, and the folding type vehicle body is folded in four directions relative to the middle of the folding vehicle body 21. The structure of the folding vehicle body 21 is relatively simple, and the folding vehicle body 21 is folded in four directions relative to the middle of the folding vehicle body 21. The volume of the folding vehicle body 21 after folding is smaller; wherein the folding vehicle body 21 can be rectangular or triangular or polygonal, the rectangular and triangular folding vehicle body 21 can be folded or folded, and the triangular and rectangular folding vehicle body 21 is preferably folded. The folding vehicle body 21 can avoid the problem of excessive folding volume. One end of the folding vehicle body 21 is provided with a fixed wheel assembly 22, which is fixedly connected with the folding vehicle body 21 and cannot be changed in direction. The other end of the folding vehicle body 21 is provided with a direction wheel assembly 23, which is rotatably connected with the folding vehicle body 21. The direction of the direction wheel assembly 23 can be changed. The direction of the direction wheel assembly 23 is also provided with a direction lever assembly 24, which is connected with the direction wheel assembly 23 and used to drive the direction wheel assembly 23 to rotate to control the walking direction of the folding vehicle body 21. The direction wheel assembly 23 comprises: a wheel fork 10, a hub motor 12 rotatably connected to the bottom end of the wheel fork 10, a hollow shaft 11 provided at the top end of the wheel fork 10, the shaft 11 being used to connect with the folding vehicle body 21, a first bearing 13 and a second bearing 14 being provided on the shaft 11, the shaft 11 being rotatable relative to the folding vehicle body 21 through the first bearing 13 and the second bearing 14, wherein the first bearing 13 and the second bearing 14 are combined to avoid the shaft 11 from tilting relative to the folding vehicle body 21 when the force is large, and the double bearings can share the force to prolong the service life of the single bearing; in order to facilitate the wiring of the wire, the shaft 11 is hollow, the wire can pass through the inside of the shaft 11 and connect with the external controller, and when the wire is rotated with the wheel fork 10, the rotation point of the wire is located in the same vertical line as the rotation point of the shaft 11, so that the rotation of the wheel fork 10 does not pull the wire, and does not affect the rotation of the hub motor 12. At the same time, since the wire is routed from the inside of the shaft 11, the wire can be hidden, which improves the overall appearance and cleanliness, and also avoids the wire from being bumped.

[0031] Preferably, the first bearing 13 and the second bearing 14 are radial bearings, which allow the shaft 11 to rotate in place relative to the folding vehicle body 21, or bearings that can withstand radial and axial forces, but such bearings are more expensive and can be determined according to the use requirements.

[0032] Further, one end of the folding vehicle body 21 is provided with the mounting seat 25, and the direction wheel assembly 23 is connected with the mounting seat 25, and the first bearing is tightly matched with the mounting seat 25;

[0033] Further, the connecting position between the mounting seat 25 and the rotating shaft 11 is also provided with the box cover 26, and the electric wire is led out from the rotating shaft 11 and located in the box cover 26;

[0034] Specifically, the corner positions of the folding vehicle body 21 are all provided with the mounting seat 25 for connecting the folding vehicle body 21 frame, and the direction wheel assembly 23 is also connected with the mounting seat 25, the direction wheel assembly 23 can rotate relative to the mounting seat 25, and the first bearing and the second bearing of the direction wheel assembly 23 are tightly matched with the mounting seat 25 and fixed in the mounting seat 25, the rotating shaft 11 is inserted into the mounting seat 25, wherein the nut is located above the mounting seat 25, and the rotating shaft 11 is limited to be separated from the first bearing through the mounting seat 25, and the box cover 26 is also provided above the mounting seat 25, which can be used to shield the electric wire led out from the rotating shaft.

[0035] Further, the bottom of the rotating shaft 11 is also provided with the third bearing 15;

[0036] Specifically, in the prior art, since the direction wheel of the folding vehicle body 21 needs to rotate, in order to avoid the contact between the wheel fork 10 and the folding vehicle body 21 and the influence of the friction on the rotation, the top of the wheel fork 10 and the folding vehicle body 21 usually have a spacing, at this time, the folding vehicle body 21 is supported above the direction wheel through the rotating shaft 11, and under the action of gravity, after the folding vehicle body 21 is loaded with goods, the position connected between the folding vehicle body 21 and the rotating shaft 11 will easily sink, in order to avoid this situation, the third bearing 15 is arranged at the bottom of the rotating shaft 11, the third bearing is located below the mounting seat 25, and the third bearing 15 is used to fill the spacing between the wheel fork 10 and the mounting seat 25, and since the bearing itself is used to enable two structural members to rotate relative to each other, even if the third bearing 15 is arranged between the wheel fork 10 and the folding vehicle body 21, it will not excessively affect the rotation of the hub motor 12; preferably, in order to avoid the force being transmitted to the second bearing 14 adjacent to the third bearing 15, the outer diameter of the third bearing 15 is greater than that of the second bearing 14, so that the outer ring of the third bearing 15 is in contact with the folding vehicle body 21, thereby achieving the effect of supporting the folding vehicle body 21 and avoiding sinking.

[0037] Further, the third bearing 15 is an axial bearing;

[0038] Specifically, since the force direction of the third bearing 15 is mainly in the direction of the rotating shaft 11, in order to ensure the bearing force, an axial bearing is preferably adopted, and in order to further reduce the influence on the rotation between the wheel fork 10 and the folding vehicle body 21 caused by the setting of the third bearing 15, the third bearing 15 is also preferably a plane bearing bearing axial force, thereby reducing the influence on the rotation caused by the setting of the third bearing 15.

[0039] Further, the first bearing 13 and the second bearing 14 are in clearance fit with the rotating shaft 11, and the first bearing 13 and the second bearing 14 are fixedly connected with the outside;

[0040] Specifically, in order to avoid that, under the condition of heavy load, the folding vehicle body 21 is under gravity, the force acts on the first bearing 13 and the second bearing 14, causing the first bearing 13 and the second bearing 14 to be easily damaged, affecting the durability, therefore, the first bearing 13 and the second bearing 14 are in clearance fit with the rotating shaft 11, wherein the first bearing 13 and the second bearing 14 are respectively fixed in the mounting seat 25, so that the rotating shaft 11 can move relative to the first bearing 13 and the second bearing 14, and the force acting on the first bearing 13 and the second bearing 14 is avoided through the movable mode, and the rotation of the wheel fork 10 is not affected; preferably, the first bearing 13 and the second bearing 14 are equal in size, so as to avoid that the smaller one shakes in the mounting seat 25, thereby causing abnormal noise during use.

[0041] Further, the top of the wheel fork 10 is also provided with a buffer 16, the buffer 16 is sleeved on the outside of the rotating shaft 11, and the first bearing 13 and the second bearing 14 are located above the buffer 16;

[0042] Specifically, although the movable mode of the rotating shaft 11 can avoid the force acting on the first bearing 13 and the second bearing 14, but due to the movement of the rotating shaft 11, the force will directly act on the connection between the folding vehicle body 21 and the rotating shaft 11, affecting the folding vehicle body 21 or the wheel fork 10, in order to avoid this situation, the top of the wheel fork 10 is also provided with a buffer 16, the buffer 16 is sleeved on the outside of the rotating shaft 11, through the setting of the buffer 16, the force generated after the folding vehicle body 21 and the wheel fork 10 are stressed is buffered, thereby avoiding the force directly acting on the folding vehicle body 21 or the wheel fork 10, so as to ensure the service life and stability of the folding vehicle body 21.

[0043] It should be pointed out that the buffer 16 can be a device with impact absorbing effect such as a spiral spring, a damper or a flexible structure such as rubber and silicone.

[0044] Further, one side of the wheel fork 10 is also provided with a wire passing hole 17, the electric wire passing through the rotating shaft 11 is connected with the hub motor 12 through the wire passing hole 17.

[0045] Specifically, in order to reduce the gap between the two sides of the fork 10 and the hub motor 12, a threading hole 17 is further arranged on the top side of the fork 10, which is used for threading the wire into the fork 10 and leading out from the rotating shaft 11, so that the gap between the fork 10 and the hub motor 12 can be left without reserving the space for the wire.

[0046] Further, the rotating shaft 11 is provided with a thread 18 at the end away from the fork 10, and the rotating shaft 11 is connected with a nut 19 through the thread 18.

[0047] Specifically, in order to avoid the rotating shaft 11 from being separated from the first bearing 13 and the second bearing 14, the rotating shaft 11 is further provided with a thread 18 at the top, and the rotating shaft 11 is further connected with a nut 19 through the thread 18, so as to limit the rotating shaft 11 from being separated from the first bearing 13 and the second bearing 14 through the nut 19.

[0048] Further, at least one wire clamp 20 is connected to one side of the fork 10, which is used for fixing the wire.

[0049] Specifically, in order to prevent the wire from shaking at the side of the fork 10, at least one wire clamp 20 is arranged on the side of the fork 10, which is used for clamping and fixing the wire.

[0050] Further, a wire protection piece (not shown in the figure) is further arranged inside the fork 10 above the hub motor 12.

[0051] Specifically, since the gap between the hub motor 12 and the fork 10 is small, in order to avoid the wire from being scratched by the adhering objects on the tire surface of the hub motor 12, a wire protection piece is arranged inside the top of the fork 10, so as to prevent the adhering objects on the tire surface of the hub motor 12 from contacting the wire, the wire protection piece can be a baffle, which is located on both sides of the wire and is higher than the wire, or it can seal the top of the fork 10, so as to separate the wire from the outside.

[0052] In summary, the rotating shaft is hollow, so that the wire can be threaded from the inside of the rotating shaft, which can improve the appearance of the vehicle body, avoid the wire from being scratched, and also avoid the wire from affecting the rotation of the fork, and the third bearing is arranged to support the folding vehicle body 21, which can improve the stability and also does not affect the rotation of the fork, so that the structure is reasonable, the service life of the bearing is improved, and the stability of the folding vehicle body 21 is increased.

[0053] The present application is not limited to the description and embodiments described in the specification, and therefore other advantages and modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to the specific details, representative devices and examples of the drawings shown and described herein.

Claims

1. A wheel hub motor wiring structure of an electric camping car, characterized by, The utility model relates to a folding vehicle body, which is a converging vehicle body or a folding vehicle body, one end of the folding vehicle body is provided with a fixed wheel assembly, the other end of the folding vehicle body is rotatably provided with a direction wheel assembly, one end of the folding vehicle body provided with the direction wheel assembly is further provided with a direction rod assembly, the direction rod assembly is connected with the direction wheel assembly, and the direction rod assembly can control the rotation of the direction wheel assembly. The wheel fork is further provided with a second bearing on the rotating shaft, and the second bearing is arranged at intervals with the first bearing.

2. The electric camping car hub motor wiring structure according to claim 1, characterized in that, The bottom of the rotating shaft is further provided with a third bearing, and the third bearing is an axial bearing.

3. The electric motor home wheel hub motor cabling structure of claim 1, wherein, The first bearing and the second bearing are radial bearings.

4. The electric motor home wheel hub motor cabling structure of claim 2, wherein, The first bearing and the second bearing are in clearance fit with the rotating shaft, and the first bearing and the second bearing are fixedly connected with the folding vehicle body.

5. The electric motor home wheel hub motor cabling structure of claim 2, wherein, The top of the wheel fork is further provided with a buffer, the buffer is sleeved on the outside of the rotating shaft, and the first bearing and the second bearing are located above the buffer.

6. The electric motor home wheel hub motor cabling structure of claim 5, wherein, One side of the wheel fork is further provided with a wire passing hole, the wire passing out of the rotating shaft is connected with the hub motor from the wire passing hole.

7. The electric motor home wheel hub motor cabling structure of claim 1, wherein, The end of the rotating shaft away from the wheel fork is provided with a thread, and the rotating shaft is connected with a nut through the thread.

8. The electric motorhome wheel hub motor cabling structure of claim 1, wherein, One side of the wheel fork is connected with at least one wire clamp for fixing the wire.

9. The electric motor home wheel hub motor cabling structure of claim 1, wherein, One end of the folding vehicle body provided with the direction wheel assembly is further provided with a mounting seat, the direction wheel assembly is connected with the mounting seat, and the first bearing is tightly matched with the mounting seat.

10. The in-wheel motor cabling structure of an electric camping car according to claim 1, characterized by, The connecting position of the mounting seat and the rotating shaft is further provided with a box cover, and the wire drawn out of the rotating shaft is located in the box cover.

11. The in-wheel motor cabling structure of an electric camping car according to claim 10, wherein The inside of the wheel fork is further provided with a wire protection piece above the hub motor.

12. The electric motorhome wheel hub motor cabling structure of claim 7, wherein, ​

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