Foldable electric golf bag vehicle

Abstract

This invention relates to a foldable electric golf bag cart. When folded, the connecting rods on both sides of the cart frame and the wheels connected to these connecting rods are folded to the sides of the frame. This invention allows the two rear wheels and the connecting rods linking the frame and the rear wheels to be folded to the sides of the frame, effectively reducing the overall size of the folded electric golf bag cart, minimizing its space requirements, and making it more convenient to move and store.

Description

Technical Field

[0001] This invention belongs to the technical field of electric golf bag carts, specifically relating to a foldable electric golf bag cart. Background Technology

[0002] Golf is a globally popular sport. The essence of golf is that it is not limited by age, allowing people to fully connect with nature, immerse themselves in it, and enjoy the endless fun that the sport brings.

[0003] Golf bag carts are used to carry golf bags containing items such as golf clubs. Electric golf bag carts powered by lithium batteries can use electric drive to replace manual labor, making them more convenient and labor-saving to use.

[0004] In existing electric golf carts, the power system for driving movement is installed inside the frame, and the driveshaft is connected to the rear wheels on both sides of the frame. Since the driveshaft is used to transmit torque, neither the driveshaft nor the rear wheels connected to it can be folded when the electric golf cart is folded, directly increasing the size of the folded electric golf cart and taking up a significant amount of space. Summary of the Invention

[0005] The purpose of this invention is to provide a foldable electric golf bag cart to solve the problem of the large space occupied by electric golf bag carts after folding.

[0006] The foldable electric golf bag cart of the present invention is implemented as follows:

[0007] A foldable electric golf bag cart, wherein when the electric golf bag cart is folded, the connecting rods on both sides of the cart frame and the wheels connected to the connecting rods are folded to the sides of the cart frame.

[0008] Furthermore, when the main component of the electric golf bag cart is folded, it can simultaneously drive the connecting rods on both sides of the frame and the wheels connected to the connecting rods to fold to both sides of the frame.

[0009] Furthermore, the lower main tube of the main tube assembly rotates forward and folds above the frame, simultaneously driving the connecting rod to rotate forward and fold to both sides of the frame, and the wheel connected to the connecting rod folds to the outside of the corresponding connecting rod.

[0010] Furthermore, the lower main pipe is linked to the connecting rod via gears.

[0011] Furthermore, bevel gear I is provided on both sides of the lower end of the lower main tube, and bevel gear II, which meshes with bevel gear I, is provided on one end of the connecting rod facing the frame. The other end of the connecting rod is hinged to the wheel assembly connected thereto.

[0012] Furthermore, at least one wheel of the electric golf bag cart is equipped with a wheel-mounted power system for driving the electric golf bag cart.

[0013] Furthermore, the electric golf bag cart is either a four-wheeled or a three-wheeled golf bag cart.

[0014] Furthermore, the electric golf bag cart is a two-wheeled golf bag cart.

[0015] Furthermore, the wheel-in-the-wheel power system is installed in at least one wheel on each of the rear ends of the frame;

[0016] The wheel-mounted power unit is hinged to the corresponding connecting rod.

[0017] Furthermore, the wheel-in-the-wheel power system is installed in at least one wheel located at the front end of the frame;

[0018] The housing of the wheel-integrated power system is connected to the corresponding front wheel frame.

[0019] Furthermore, the wheel-in-the-wheel power system includes a motor and a worm gear that meshes with the output worm of the motor, wherein the spindle of the worm gear is connected to the wheel hub corresponding to the wheel-in-the-wheel power system.

[0020] The motor is a brushless motor.

[0021] Furthermore, the wheel-in-the-wheel power system includes a motor and a reduction gear assembly connected to the motor drive, the reduction gear assembly being connected to the wheel axle of the wheel corresponding to the wheel-in-the-wheel power system;

[0022] The reduction assembly includes a worm gear that meshes with the output worm of the motor, and a gear set that transmits the torque of the worm gear to the corresponding wheel axle.

[0023] Furthermore, the wheel-integrated power system also includes a parking assembly connected to the end of the output worm gear.

[0024] Furthermore, the parking assembly includes a friction plate connected to the output worm gear, and a brake pad capable of locking the friction plate.

[0025] Furthermore, the parking assembly also includes a brake stator, the brake pads are located inside the brake stator, the friction pads are mounted on the side of the brake stator facing the brake pads, and a coil is wound inside the brake stator;

[0026] A return spring is installed on the side of the brake stator facing the brake pad;

[0027] The brake stator is equipped with a guide pin parallel to the output worm gear, and the outer ring surface of the brake pad is provided with a guide notch that cooperates with the guide pin.

[0028] Furthermore, the electric golf bag cart has a battery mounting port at the rear of its frame, through which the battery is inserted into the battery compartment inside the frame.

[0029] The electric golf bag cart has support wheels on the rear side of its frame that can retract horizontally into the bottom of the frame.

[0030] After adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0031] The electric golf bag cart of the present invention can fold the two rear wheels and the connecting rods used to connect the frame and the rear wheels to the two sides of the frame when folded, thereby effectively reducing the overall size of the electric golf bag cart after folding, reducing the space it occupies, and making it more convenient to move and store. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is an unfolded view of the foldable electric golf bag cart according to Embodiment 1 of the present invention;

[0034] Figure 2 This is a structural diagram of the lower main tube and connecting rod mating point of the foldable electric golf bag cart according to Embodiment 1 of the present invention;

[0035] Figure 3 This is a structural diagram of the lower main tube and connecting rod mating point of the foldable electric golf bag cart according to Embodiment 1 of the present invention;

[0036] Figure 4 This is an exploded view of the connection between the upper and lower main pipes of the foldable electric golf bag cart according to Embodiment 1 of the present invention;

[0037] Figure 5 This is a structural diagram of the wheel-embedded power system of the foldable electric golf bag cart according to Embodiment 1 of the present invention;

[0038] Figure 6 This is an exploded view of the wheel-embedded power system of the foldable electric golf bag cart according to Embodiment 1 of the present invention.

[0039] Figure 7 This is a diagram showing the folded state of the foldable electric golf bag cart according to Embodiment 1 of the present invention;

[0040] Figure 8This is a cross-sectional view of the wheel-embedded power system of the foldable electric golf bag cart according to Embodiment 2 of the present invention in the axial direction of the output worm gear.

[0041] Figure 9 This is an exploded view of the wheel-embedded power system of the foldable electric golf bag cart according to Embodiment 2 of the present invention;

[0042] Figure 10 This is an unfolded view of the foldable electric golf bag cart according to Embodiment 3 of the present invention;

[0043] Figure 11 This is a folded state diagram of the foldable electric golf bag cart according to Embodiment 3 of the present invention;

[0044] Figure 12 This is an unfolded view of the foldable electric golf bag cart according to Embodiment 4 of the present invention;

[0045] Figure 13 This is a structural diagram of the internal structure of the wheel-embedded power system of the foldable electric golf bag cart according to Embodiment 4 of the present invention;

[0046] Figure 14 This is a structural diagram of the internal structure of the wheel-embedded power system of the foldable electric golf bag cart according to Embodiment 5 of the present invention;

[0047] Figure 15 This is a cross-sectional view of the motor of the foldable electric golf bag cart according to Embodiment 5 of the present invention in the axial direction of the output worm gear;

[0048] Figure 16 This is a structural diagram of the foldable electric golf bag cart according to Embodiment 6 of the present invention;

[0049] Figure 17 This is a structural diagram of the foldable electric golf bag cart according to Embodiment 7 of the present invention;

[0050] In the diagram: Rear wheel 1, Frame 2, Front wheel 3, Front wheel bracket 4, Connecting rod 5, Lower main tube 6, Upper main tube 7, Handle 8, Bevel gear I 9, Bevel gear II 10, Wheel-integrated power system 11, Housing 11-1, Connecting slot 11-2, Hinge rod 11-3, Motor 11-4, Worm gear 11-5, Output worm 11-6, Spindle 11-7, Bearing I 11-8, Side sealing plate 11-9, Bearing II 11-

[0051] 10, Cover 11-11, Heat dissipation cavity 11-12, Heat dissipation window 11-13, Friction plate 11-14, Brake plate 11-15, Pin hole 11-16, Accommodation notch 11-17, Brake stator 11-18, Coil 11-19, Annular groove bracket 11-20, Return spring 11-

[0052] 21, Guide pins 11-22, Guide notch 11-23, Main gear 11-24, Secondary gear 11-25, Auxiliary connecting rod 12, Independent hinge seat 13, Hinge plate I 14, Hinge plate II 15, Connecting shaft 16, Locking block 17, Lower locking wrench 18, Cover plate 19, Wrench limiting groove 20, Wheel axle 21, Support leg 22, Lower locking wrench 23, Locking plate 24, Locking notch 25, Support wheel 26, Triangular bracket 27, Insert hole 28, Support wheel seat 29, Support wheel frame 30, Switch port 31, Battery switch 32, Pad 33, Arc-shaped through hole 34, Locking pin 35, Locking bayonet 36, Space D. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0055] In this application, the rear wheel 1 refers to the wheels located on both sides of the rear end of the frame 2, while the wheels located at the front end of the frame 2 are the front wheels 3. That is, a four-wheeled ball bag vehicle has two front wheels 3 and two rear wheels 1, a three-wheeled ball bag vehicle has one front wheel 3 and two rear wheels 1, and a two-wheeled ball bag vehicle has two rear wheels 1.

[0056] The rear wheel 1 is connected to the frame 2 via a connecting rod 5, and the front wheel 3 is connected to the frame 2 via a front wheel frame 4.

[0057] Example 1

[0058] like Figure 1-7 As shown, a foldable electric golf bag cart is provided. When the electric golf bag cart is folded, the connecting rods 5 on both sides of the electric golf bag cart frame 2 and the wheels connected to the connecting rods 5 can be folded to the sides of the frame 2.

[0059] In this embodiment, the electric golf bag cart is a four-wheeled golf bag cart.

[0060] Specifically, the four-wheeled ball bag includes a frame 2, two front wheels 3 mounted on the front end of the frame 2 via a front wheel frame 4, connecting rods 5 located on both sides of the rear end of the frame 2, a rear wheel 1 located at the outer end of the connecting rods 5, a support wheel 26 located on the rear side of the frame 2, and a main tube assembly located on the frame 2. The main tube assembly includes a lower main tube 6 and an upper main tube 7, and a handle 8 located on top of the upper main tube 7.

[0061] In order to achieve the folding of the electric high-profile main unit, the connecting rods 5 on both sides of the frame 2 and the wheels connected to the connecting rods 5 are folded to both sides of the frame 2 simultaneously.

[0062] Specifically, the lower main tube 6 of the main tube assembly rotates forward and folds above the frame 2, simultaneously driving the connecting rod 5 to rotate forward and fold to both sides of the frame 2, and the wheel connected to the connecting rod 5 folds to the outside of the corresponding connecting rod 5.

[0063] In this embodiment, when the lower main tube 6 is folded, the connecting rod 5 connected to the rear wheel 1 rotates forward and folds to both sides of the frame 2, while the two rear wheels 1 are folded to the outside of the connecting rod 5 connected to them.

[0064] like Figure 2-3 As shown, in order to drive the folding of the connecting rod 5 by folding the lower main pipe 6, the lower main pipe 6 is linked to the connecting rod 5 through a gear.

[0065] Specifically, bevel gears I9 are respectively provided on both sides of the lower end of the lower main tube 6, and bevel gear II10 that meshes with bevel gears I9 is ​​provided on one end of the connecting rod 5 facing the frame 2. The other end of the connecting rod 5 is hinged to the wheel assembly connected thereto.

[0066] like Figure 3 As shown, a lower locking wrench 23 is provided on the rear side of the frame 2, and a locking plate 24 rotatably mounted in the frame is provided on the inner side of the lower locking wrench 23. Two locking notches 25 are provided on the outer ring surface of the bevel gear I9, which can cooperate with the locking plate 24 and correspond to the unfolded and folded states of the electric golf bag cart, respectively.

[0067] Two locking plates 24 are provided with corresponding arc-shaped through holes 34, and transverse locking pins 35 are provided in the two arc-shaped through holes 34. The lower end of the lower main pipe 6 is provided with a locking slot 36 that cooperates with the locking pins 35. When the electric golf bag cart is in the folded or unfolded state, the locking pins 35 are located in the locking slots 36 to limit the lower main pipe 6 and ensure the stability of the electric golf bag cart in the folded or unfolded state.

[0068] When unfolding or folding the electric golf bag cart, the user operates the lower locking lever 23 to rotate upwards, causing the locking plate 24 to separate from the bevel gear I9. Simultaneously, the locking plate 24 moves the locking pin 35 backwards, disengaging it from the locking slot 36. At this point, the lower main tube 6 can be rotated upwards to unfold the electric golf bag cart, or downwards to fold it. After rotation to the correct position, the lower locking lever 23 is rotated downwards. The locking plate 24 then engages in the corresponding locking notch 25, and the locking pin 35 engages in the locking slot 36, thus locking the lower main tube 6 and ensuring the stability of the electric golf bag cart in its unfolded or folded state.

[0069] When the locking plate 24 is rotated, the arc-shaped through hole 34 can push the locking pin 35 to move. The frame 2 on the outside of the locking plate 24 is provided with a waist-shaped hole, and the two ends of the locking pin 35 are fitted into the waist-shaped hole, which guides its movement.

[0070] When the electric golf bag needs to be folded or unfolded, the user operates the lower locking wrench 23 to turn it upward, thereby causing the locking plate 24 to separate from the bevel gear I9. At this time, the bevel gear I9 can be rotated through the lower main tube 6 to achieve the synchronous folding or unfolding of the lower main tube 6, connecting rod 5 and rear wheel 1. After unfolding or folding in place, the user turns the lower locking wrench 23 downward. At this time, the locking plate 24 can be locked in the corresponding locking notch 25 to lock the bevel gear I9, thereby preventing the lower main tube 6 from being rotated and ensuring the stability of the electric golf bag in the unfolded or folded state.

[0071] The linkage structure between the lower main tube 6 and the connecting rod 5 is not limited to the bevel gear engagement method mentioned above.

[0072] In this embodiment, the wheel assembly is the rear wheel assembly.

[0073] In order to drive the movement of the electric golf bag cart, i.e., the four-wheeled golf bag cart, at least one wheel of the electric golf bag cart is equipped with a wheel-in-wheel power system 11 for driving the electric golf bag cart.

[0074] The wheel-integrated power system 11 is installed in at least one wheel on either side of the rear end of the frame 2, i.e., in at least one rear wheel 1.

[0075] The wheel-integrated power system 11 is that the power system is installed in the space D formed inside the corresponding wheel, but it is not limited to the method of completely setting the power system in the space D. A small part of the power system may extend beyond the space D formed by the wheel.

[0076] In this embodiment, the wheel-in-the-wheel power system 11 is installed in the two rear wheels 1 of the four-wheeled ball bag vehicle. The rear wheel assembly includes the rear wheel 1 and the wheel-in-the-wheel power system 11 located in the rear wheel 1. The wheel-in-the-wheel power system 11 is located on the inner side of the corresponding rear wheel 1, that is, on the side of the rear wheel 1 facing the frame 2.

[0077] Specifically, the wheel-integrated power system 11 includes a housing 11-1, with a connecting groove 11-2 on the inner side of the housing 11-1. The outer end of the connecting rod 5 is hinged in the connecting groove 11-2, which allows the connecting rod 5 to drive the two rear wheels 1 to fold when the four-wheeled ball bag is folded.

[0078] Preferably, in order to ensure the stability of the connection between the rear wheel assembly and the frame 2, two hinge rods 11-3 are provided in the connecting groove 11-2, and an auxiliary connecting rod 12 parallel to it is provided on the rear side of the connecting rod 5. The outer ends of the two are respectively hinged to the two hinge rods 11-3 in the connecting groove 11-2.

[0079] The bevel gear II10 at the inner end of the connecting rod 5 engages with the bevel gear I9 at the bottom of the lower main tube 6, while the inner end of the auxiliary connecting rod 12 is directly hinged to the frame 2.

[0080] The wheel-in-the-wheel power system 11 can also be installed on the outer side of the corresponding rear wheel 1, that is, on the side of the rear wheel 1 away from the frame. In this case, the connecting rod 5 cannot be connected to the housing 11-1. In this case, the rear wheel assembly also includes an independent hinge seat 13 located on the inner side of the rear wheel 1, so as to facilitate hinge engagement with the connecting rod 5 and the auxiliary connecting rod 12.

[0081] In this embodiment, the upper main pipe 7 and the lower main pipe 6 are connected by a hinge to facilitate folding and unfolding of both.

[0082] like Figure 4 As shown, specifically, the connector I at the lower end of the upper main pipe 7 is provided with three parallel hinge plates I14, and the connector II at the upper end of the lower main pipe 6 is provided with two parallel hinge plates II15. The two hinge plates II15 are respectively fitted in the gap between the two adjacent hinge plates I14, and a connecting shaft 16 passes through the center, so that the hinge plates I14 and II15 can be rotated and fitted on the connecting shaft 16.

[0083] The outer surfaces of the two outer hinge plates I 14 are provided with annular segmented slots. Locking blocks 17 with locking teeth on their inner surfaces are fitted within these slots. Due to the slot design, the locking blocks 17 cannot rotate relative to the hinge plates I 14. The outer surface of the hinge plate II 15 is provided with a secondary toothed surface that mates with the locking teeth. One end of the connecting shaft 16 is provided with a rotatable lower locking wrench 18, and the other end is threadedly connected to the locking block 17 on that side.

[0084] The outer side of the locking block 17 is provided with a cover plate 19 fixedly connected to it, and the cover plate 19 on the side where the lower locking wrench 18 is located is provided with a wrench limiting groove 20.

[0085] When folding the upper main tube 7 and lower main tube 6, pull the lower locking lever 18 to position it in the axial direction of the connecting shaft 16. Rotate the connecting shaft 16 through the lower locking lever 18, moving it toward the side where the lower locking lever 18 is located. This causes the locking teeth on the locking block 17 to separate from the corresponding secondary teeth, allowing the hinge plate I 14 to rotate relative to the hinge plate II 15. At this point, the upper main tube 7 can be rotated downwards around the top of the lower main tube 6, folding it behind the lower main tube 6. When the lower main tube 6 is folded forward above the frame 2, the upper main tube 7 is positioned above the lower main tube 6. During the folding process of the lower main tube 6, the connecting rod 5 and the rear wheel 1 can be folded to the sides of the frame 2, thus completing the folding of the entire electric golf bag cart.

[0086] When unfolding the golf bag cart, move the connecting shaft 16 away from the end of the lower locking wrench 18. After the locking tooth surface engages with the corresponding secondary tooth surface, turn the lower locking wrench 18 to rotate it to a direction perpendicular to the axial direction of the connecting shaft 16 and engage it in the wrench limiting groove 20. At this time, the connection between the upper main tube 7 and the lower main tube 6 can be locked.

[0087] The folding method of the upper tube 7 and the lower tube 6 is not limited to the one mentioned above. Other folding methods are also applicable, such as retracting the upper tube 7 into the lower tube 6 in a telescopic manner.

[0088] like Figure 5-6 As shown, in order to drive the rear wheel 1 to rotate through the wheel-in-the-wheel power system 11, the wheel-in-the-wheel power system 11 includes a motor 11-4 and a worm wheel 11-5 that meshes with the output worm 11-6 of the motor 11-4. The spindle 11-7 of the worm wheel 11-5 is connected to the wheel hub corresponding to the wheel-in-the-wheel power system 11.

[0089] The motor 11-4 is a brushless motor.

[0090] Compared to brushed motors of the same power, the brushless motor used in this patent is smaller in size, making the structure of the entire wheel-integrated power system 11 more compact and easier to integrate into the wheel.

[0091] In this embodiment, to protect the mating parts of the worm gear 11-5 and the output worm 11-6, the worm gear 11-5 is installed inside the housing 11-1. The spindle 11-7 of the worm gear 11-5 extends from one side of the housing 11-1 and is directly connected to the corresponding rear wheel 1 hub. The spindle 11-7 mates with the housing 11-1 via bearing I 11-8. A side sealing plate 11-9 is provided on the side of the housing 11-1 where bearing I 11-8 is located, which is connected to the housing 11-1 by bolts. Removing the side sealing plate 11-9 allows for easy installation of the worm gear 11-5 and bearing I 11-8.

[0092] In this embodiment, the motor 11-4 is bolted to the upper rear side of the housing 11-1, while the front end of the output worm gear 11-6 is connected to the housing 11-1 via bearing II 11-10.

[0093] The front side of the housing 11-1 is provided with a cover 11-11 that is bolted to it. Removing the cover 11-11 makes it easy to install the bearing II 11-10.

[0094] Preferably, in order to achieve good heat dissipation for the motor 11-4, a heat dissipation cavity 11-12 is provided on the outside of the motor 11-4, and multiple heat dissipation fins are provided inside the heat dissipation cavity 11-12. A heat dissipation window 11-13 is provided on the housing 11-1 to cooperate with the heat dissipation cavity 11-12.

[0095] Specifically, the housing 11-1 includes a cavity for accommodating the worm gear 11-5, and a support seat located at the rear of the cavity for supporting the motor 11-4. The motor 11-4 is mounted on the support seat, and the heat dissipation window 11-13 is located on the rear wall of the support seat.

[0096] The wheel-embedded power system 11 disclosed in this embodiment can be in the form without heat dissipation chambers 11-12 or in the form with heat dissipation chambers 11-12.

[0097] In this embodiment, the wheel-embedded power system 11 adopts a transmission method of output worm gear 11-6 and worm wheel 11-5. This not only facilitates the connection of the entire wheel-embedded power system 11 to the electric control system of the electric golf bag cart, thereby realizing automatic speed control of the electric golf bag cart, but also enables the wheel-embedded power system 11 to have a certain self-locking function, thereby avoiding reverse reversal, ensuring the reliability of the transmission process, and improving the safety of the electric golf bag cart during operation.

[0098] When the electric golf bag cart is going downhill, the speed can be limited by setting a downhill speed. This way, no matter how steep the slope is, the speed will not exceed the set speed, thus effectively ensuring the safety of using the electric golf bag cart.

[0099] Furthermore, compared to ordinary gear transmission reduction components, worm gear transmission reduction has superior self-locking performance, thus giving the reduction component of this embodiment the following advantages:

[0100] Firstly, if the transmission interface experiences a power outage or mechanical failure, the reduction gear will self-lock, effectively preventing reverse rotation due to unexpected external interference.

[0101] Secondly, it can ensure the safety and reliability of mechanical transmission. Once a fault occurs, the transmission will stop immediately, effectively avoiding damage to components such as motor 11-4 caused by mechanical failure.

[0102] Thirdly, it also has good adjustment performance. The output torque can be adjusted by changing the angle between the worm gear 11-5 and the output worm 11-6.

[0103] In addition, compared with hub motors, the wheel-embedded power system 11 of the present invention is small in size and light in weight. It uses an output worm gear 11-6 and a worm wheel 11-5 to cooperate, which not only has low operating noise, but also has a large reduction ratio, that is, it has good deceleration function. It can increase the driving torque by deceleration, so that the electric golf bag can easily cope with road conditions such as uphill.

[0104] The wheel-embedded power system 11 used in this embodiment is small in size and light in weight. It can transmit torque to the corresponding wheel through only one-stage transmission, namely the cooperation between the output worm 11-6 and the worm wheel 11-5. It has a simple and compact structure and good transmission effect.

[0105] Because the golf course is uneven, when going uphill, if the electric golf bag cart tilts backward and the front wheel 3 is suspended in the air, the support wheel 26 can support the electric golf bag cart to ensure its stability.

[0106] In this embodiment, the support wheel 26 is mounted on the rear side of the frame 2 via a triangular bracket 27. The two ends of the triangular bracket 27 are hinged to the rear sides of the frame 2, and the support wheel 26 is mounted on the rear end of the triangular bracket 27.

[0107] In this embodiment, the battery compartment of the electric golf bag cart is located inside its frame 2, and the battery is an explosion-proof battery. The battery is installed and removed from the top of the frame 2.

[0108] like Figure 7As shown, in this embodiment, when the four-wheeled ball bag vehicle is folded, its upper main tube 7 rotates backward and downward, thus folding with the lower main tube 6, while the lower main tube 6 rotates forward and downward, thus folding above the frame 2. Simultaneously with the folding of the lower main tube 6, the connecting rod 5 rotates forward under the drive of the lower main tube 6, thereby driving the rear wheel 1 connected to it to fold on both sides of the frame 2; that is, the connecting rod 5 and the corresponding rear wheel 1 are both close to the sides of the frame 2. The triangular bracket 27 is rotated downward and forward to drive the support wheel 26 to fold below the frame 2. This folding method effectively reduces the size of the folded four-wheeled ball bag vehicle, making it easier to move and store.

[0109] In this embodiment, a pad 33 is provided on the rear side of the frame 2, which can cooperate with the two rear wheels 1. After the electric golf bag is folded, it is placed in an upright manner, that is, the pad 33 and the two rear wheels 1 form a triangular support to ensure the stability of the electric golf bag.

[0110] In this embodiment, the two rear wheels 1 of the four-wheeled ball bag vehicle are equipped with a wheel-integrated power system 11. In addition, the wheel-integrated power system 11 also has the following configuration:

[0111] (1) A wheel-in-the-wheel power system 11 is installed inside the rear wheel 1 on one side;

[0112] (2) A wheel-in-the-wheel power system 11 is installed inside one or both front wheels 3;

[0113] (3) A wheel-in-the-wheel power system 11 is installed in the front wheel 3 and the rear wheel 1 on one side (front and rear wheels 1 on the same side or front and rear wheels 1 on different sides);

[0114] (4) A wheel-embedded power system 11 is installed in a single front wheel 3 and two rear wheels 1, or in a single rear wheel 1 and two front wheels 3;

[0115] (5) Both front wheels 3 and both rear wheels 1 are equipped with wheel-embedded power systems 11.

[0116] Example 2

[0117] like Figure 8-9 As shown, based on Embodiment 1, this embodiment also provides a foldable electric golf bag cart, whose general structure is the same as that of Embodiment 1, except that:

[0118] To improve the parking function of the wheel-in-wheel power system 11 and ensure the safety of the electric golf bag cart when parked, the wheel-in-wheel power system 11 also includes a parking assembly connected to the end of the output worm gear 11-6.

[0119] In order to achieve the parking effect, the parking assembly includes a friction plate 11-14 connected to the output worm gear 11-6, and a brake plate 11-15 that can lock the friction plate 11-14.

[0120] When the electric golf cart is in motion, the output worm gear 11-6 can drive the friction plate 11-14 to rotate synchronously. When parking, the brake pad 11-15 moves toward the friction plate 11-14 and can lock the friction plate 11-14 to prevent it from rotating, thereby preventing the output worm gear 11-6 from rotating and achieving the purpose of parking.

[0121] Specifically, in order to connect the output worm gear 11-6 with the friction plate 11-14, the output worm gear 11-6 is provided with a pin hole 11-16, and the friction plate 11-14 is connected to the output worm gear 11-6 through a pin (not shown in the figure) installed in the pin hole 11-16.

[0122] The friction plate 11-14 has two symmetrically arranged receiving notches 11-17 on the outer periphery of its inner hole. When the output worm gear 11-6 equipped with a pin is fitted into the inner hole of the friction plate 11-14, the two ends of the pin are located in the two receiving notches 11-17. When the output worm gear 11-6 rotates, the pin can drive the friction plate 11-14 to rotate synchronously.

[0123] In order to drive the brake pads 11-15 to lock the friction pads 11-14, the parking assembly also includes a brake stator 11-18, with the brake pads 11-15 located inside the brake stator 11-18, the friction pads 11-14 mounted on the side of the brake stator 11-18 facing the brake pads 11-15, and a coil 11-19 wound inside the brake stator 11-18.

[0124] Specifically, the brake stator 11-18 has an annular cavity, and an annular groove-shaped support 11-20 with its opening facing outward is provided inside the annular cavity. The coil 11-19 is wound inside the annular groove-shaped support 11-20.

[0125] The end of the inner hole of the brake stator 11-18 facing the brake pad 11-15 is a mounting cavity with an inner diameter larger than the inner hole, and the friction pad 11-14 is placed in the mounting cavity.

[0126] When coil 11-19 is energized, brake stator 11-18 becomes a magnet with magnetic force, which attracts brake pad 11-15, thereby clamping friction pad 11-14 between brake pad 11-15 and brake stator 11-18, preventing friction pad 11-14 from rotating with output worm gear 11-6.

[0127] Preferably, the outer ring surface of the brake stator 11-18 is provided with a wire-passing notch to facilitate the end of the coil 11-19 to be led out and connected to the power supply.

[0128] In order to achieve the inward repositioning of the brake pads 11-15 when the parking brake is released, a return spring 11-21 is installed on the side of the brake stator 11-18 facing the brake pads 11-15.

[0129] Specifically, the brake stator 11-18 has a mounting hole I on the side facing the brake pad 11-15, and the return spring 11-21 is placed in the mounting hole I.

[0130] When coil 11-19 is energized, brake pad 11-15 moves toward brake stator 11-18 and clamps friction pad 11-14, compressing return spring 11-21. After coil 11-19 is de-energized, brake stator 11-18 loses its magnetism, and brake pad 11-15 moves inward under the elastic force of return spring 11-21, i.e., moves away from brake stator 11-18 to reset, thus releasing the parking state.

[0131] In order to guide the movement of the brake pads 11-15, a guide pin 11-22 parallel to the output worm gear 11-6 is installed on the brake stator 11-18, and a guide notch 11-23 that cooperates with the guide pin 11-22 is provided on the outer ring surface of the brake pads 11-15.

[0132] Specifically, the brake stator 11-18 has a mounting hole II on the side facing the brake pad 11-15, and the guide pin 11-22 is installed in the mounting hole II. When the vehicle is parked or released from parking, i.e. when the brake pad 11-15 moves, the guide pin 11-22 can guide it.

[0133] Meanwhile, the guide pin 11-22 can also limit the brake pad 11-15 in the circumferential direction, preventing it from rotating freely along with the friction pad 11-14, etc.

[0134] In this embodiment, the parking assembly is located at the end of the housing 11-1 away from the motor 11-4, that is, at the front end of the cavity of the housing 11-1. The output worm 11-6 cooperates with the worm wheel 11-5, and its end away from the motor 11-4, that is, its front end, is connected to the parking assembly, that is, it passes through the brake pad 11-15 and is connected to the friction pad 11-14.

[0135] When assembling the parking assembly with the motor 11-4, the parking assembly can be installed by removing the cover 11-11, which provides good protection for the parking assembly.

[0136] The parking assembly is not limited to being installed at the front end of the output worm gear 11-6; it can also be installed at the rear end of the motor 11-4 (similar to the method in embodiment 4), thereby cooperating with the rear end of the output worm gear 11-6 to achieve the same parking effect.

[0137] The four-wheeled ball bag vehicle disclosed in this embodiment has the same folding method and folding process as the four-wheeled ball bag vehicle in Embodiment 1.

[0138] Example 3

[0139] like Figure 10-11 As shown, based on Embodiment 1, this embodiment also provides a foldable electric golf bag cart, whose general structure is the same as that of Embodiment 1, except that:

[0140] The electric golf bag cart has a battery mounting port at the rear of its frame 2, through which the battery is inserted into the battery compartment inside the frame 2.

[0141] In Embodiment 1, the battery is installed into the battery compartment from the top of the frame 2. However, when the electric golf bag is folded, the battery cannot be installed or removed, making it very inconvenient to use. To solve this problem, this embodiment provides an electric golf bag with the battery installed from the rear of the frame 2.

[0142] Specifically, the lower locking lever 23 is located at the battery assembly port. After turning the lower locking lever 23 upwards to open it, the battery can be taken out of the battery compartment or installed in the battery compartment. Even when the electric golf bag is in a folded state, the battery can still be removed and installed, making it more convenient and simple to use.

[0143] In order to further reduce the size of the electric golf bag cart when folded, the electric golf bag cart in this embodiment is provided with a support wheel 26 on the rear side of the frame 2 that can be horizontally retracted into the bottom of the frame 2.

[0144] Specifically, the bottom of the frame 2 is provided with two insertion holes 28, the support wheel 26 is mounted on the support wheel seat 29, the support wheel seat 29 is rotatably mounted on two parallel support wheel frames 30, and the support wheel frames 30 are correspondingly mounted in the two insertion holes 28.

[0145] The four-wheeled golf bag cart disclosed in this embodiment has a folding method and folding process that are largely the same as those in Embodiment 1. The only difference is the folding process at the support wheel 26. That is, when folding the electric golf bag cart, the support wheel seat 29 is rotated downwards and the support wheel frame 30 is pushed forward so that the support wheel 26, the support wheel seat 29, and the support wheel frame 30 are all located at the bottom of the frame 2.

[0146] When the electric golf bag cart is in use, the support wheel seat 29 rotates to a position at the same height as the support wheel frame 30 so as to cooperate with the rear wheel 1 and the front wheel 3 to support the electric golf bag cart.

[0147] When installing or removing the battery in the unfolded state, first rotate the support wheel 29 downwards, then rotate the lower locking lever 23 upwards to open the battery mounting port, allowing the battery to be inserted or removed. During this process, the support wheel frame 30 also provides guidance and support for the battery insertion or removal.

[0148] When installing or removing the battery in the folded state, since the support wheel 26 is already at the bottom of the frame 2, the lower locking wrench 23 can be turned upwards to open the battery assembly port, allowing for battery installation or removal.

[0149] Preferably, in order to facilitate the switching of the battery, in this embodiment, the lower locking wrench 23 is provided with a switch opening 31 to accommodate the battery switch 32 passing through.

[0150] Example 4

[0151] like Figure 12-13 As shown, based on Embodiment 2, this embodiment also provides a foldable electric golf bag cart, which is also a four-wheeled golf bag cart, and both rear wheels 1 of the four-wheeled golf bag cart are equipped with wheel-embedded power systems 11.

[0152] The difference lies in the fact that the wheel-embedded power system 11 in this embodiment adopts a different structure.

[0153] Specifically, the wheel-in-the-wheel power system 11 includes a motor 11-4 and a reduction gear assembly that is connected to the motor 11-4. The reduction gear assembly is connected to the axle 21 of the wheel corresponding to the wheel of the wheel-in-the-wheel power system 11 (i.e., the axle 21 of the rear wheel 1 in this embodiment).

[0154] In this embodiment, both the motor 11-4 and the reduction gear assembly are housed inside the housing 11-1, and the motor 11-4 is fixedly connected to the housing 11-1.

[0155] In this embodiment, the hinged connection between the connecting rod 5 and the wheel-in-built power system 11 is not limited to hinged connection between the connecting rod 5 and the housing 11-1. In the absence of housing 11-1, a corresponding hinged structure can be used to directly connect the connecting rod 5 to the motor 11-4, which can also achieve the effect that the connecting rod 5 and the rear wheel 1 can fold together during the folding process of the golf bag.

[0156] Specifically, the reduction assembly includes a worm gear 11-5 that meshes with the output worm 11-6 of the motor 11-4, and a gear set that transmits the torque of the worm gear 11-5 to the corresponding wheel axle 21.

[0157] Based on Embodiment 1, this embodiment adds a set of gear transmissions to the wheel-embedded power system 11, meaning that the torque of the worm gear 11-5 must pass through the gear set to be transmitted to the corresponding wheel axle 21.

[0158] By setting up the gear set, the motor 11-4 can be installed at an offset position, thereby making the structure of the entire wheel-integrated power system 11 more compact.

[0159] In this embodiment, the gear set includes a meshing main gear 11-24 and a secondary gear 11-25, wherein the main gear 11-24 and the worm gear 11-5 are coaxially arranged, and the secondary gear 11-25 is mounted on the axle 21 of the corresponding rear wheel 1.

[0160] During transmission, the output worm 11-6 of motor 11-4 drives the worm wheel 11-5 to rotate, the main gear 11-24 and the worm wheel 11-5 rotate synchronously, and the auxiliary gear 11-25 rotates under the drive of the main gear 11-24, which in turn drives the axle 21 and the corresponding rear wheel 1 to rotate.

[0161] The four-wheeled ball bag vehicle disclosed in this embodiment has the same folding method and folding process as the four-wheeled ball bag vehicle in Embodiment 1.

[0162] Example 5

[0163] like Figure 14-15 As shown, based on Embodiment 3, this embodiment also provides a foldable electric golf bag cart, whose structure is roughly the same as that of Embodiment 3, except that:

[0164] The wheel-in-the-wheel power system 11 also includes a parking assembly, which is an addition to the wheel-in-the-wheel power system 11 in embodiment 3.

[0165] In this embodiment, the parking assembly is located at the tail of the motor 11-4. The structure of this parking assembly, its connection method with the output worm gear 11-6, and its working principle are all the same as those of the parking assembly in Embodiment 2.

[0166] The four-wheeled ball bag vehicle disclosed in this embodiment has the same folding method and folding process as the four-wheeled ball bag vehicle in Embodiment 1.

[0167] Example 6

[0168] like Figure 16 As shown, based on Embodiment 4, this embodiment also provides a foldable electric golf bag cart, which is a three-wheeled golf bag cart, and the wheel-integrated power system 11 is installed in its front wheel 3.

[0169] The wheel-embedded power system 11 in this embodiment adopts the structure in embodiment 4.

[0170] The wheel-in-the-wheel power system 11 can be installed on either side of the front wheel 3, and its housing 11-1 is connected to the front wheel frame 4 of the front wheel 3.

[0171] In this embodiment, the front wheel frame 4 is a U-shaped structure with the opening facing downwards. On the side where the wheel-embedded power system 11 is located, the lower end of the front wheel frame 4 is fixedly connected to the housing 11-1.

[0172] The structure of the three-wheeled golf cart is similar to that of the four-wheeled golf cart, except that the three-wheeled golf cart has only one front wheel 3 on the front side of the frame 2.

[0173] In this embodiment, the inner side of the rear wheel 1 of the three-wheeled ball bag vehicle is provided with an independent hinge seat 13 that rotates with the rear wheel 1, and the outer ends of the connecting rod 5 and the auxiliary connecting rod 12 are hinged to the independent hinge seat 13. In this way, the connecting rod 5 and the rear wheel 1 can be folded in the same way as the four-wheeled ball bag vehicle in Embodiment 1.

[0174] The wheel-embedded power system 11 disclosed in Example 4 is used in this embodiment.

[0175] For a three-wheeled ball bag, the wheel-in-wheel power system 11 can be installed in its front wheel 3. In addition, the wheel-in-wheel power system 11 also has the following configuration:

[0176] (1) Installed only in the rear wheel 1, i.e., installed on one side of the rear wheel 1 or on both sides of the rear wheel 1;

[0177] (2) The front wheel 3 and the rear wheel 1 are installed simultaneously, that is, the front wheel 3 and the single-sided rear wheel 1 are installed, or the front wheel 3 and the double-sided rear wheel 1 are installed.

[0178] Example 7

[0179] like Figure 17 As shown, based on Embodiment 4, this embodiment also provides a foldable electric golf bag cart, which is a two-wheeled golf bag cart.

[0180] The structure of the two-wheeled golf bag is similar to that of the three-wheeled golf bag. The difference is that the two-wheeled golf bag has a support leg 22 at the front end of the frame 2, so as to form a triangular support with the two rear wheels 1 and ensure the stability of the two-wheeled golf bag when it is placed.

[0181] In this embodiment, the wheel-integrated power system 11 is installed in the two rear wheels 1.

[0182] The wheel-embedded power system 11 disclosed in Example 4 is used in this embodiment.

[0183] The two-wheeled ball bag vehicle disclosed in this embodiment can be folded in the same way and in the same way as the four-wheeled ball bag vehicle in Embodiment 1.

[0184] For two-wheeled ball-shaped vehicles, a wheel-mounted power system 11 can also be installed in a single wheel.

[0185] In the four-wheeled ball bag vehicle, the connection method between the rear wheel 1 and the connecting rod 5, which does not have an internal power system 11, can be referred to the structure of the three-wheeled ball bag vehicle in Embodiment 5.

[0186] In the three-wheeled ball bag vehicle, the method of installing the wheel-in-wheel power system 11 in the rear wheel 1 can refer to the structure of the four-wheeled ball bag vehicle in Embodiment 1.

[0187] In the two-wheeled golf bag vehicle, the connection method between the rear wheel 1 and the connecting rod 5, which does not have an internal power system 11, can be referred to the structure of the three-wheeled golf bag vehicle in Embodiment 5.

[0188] The two-wheeled golf bag cart in the electric golf bag cart can be manually balanced during use and is driven by the built-in power system 11 in the wheels.

[0189] For both three-wheeled and two-wheeled golf carts, the wheel-in-the-wheel power system 1 and support wheel 26 structure disclosed in Embodiment 1 are applicable, as are the wheel-in-the-wheel power system 11 disclosed in Embodiment 2, the support wheel 26 structure and battery installation method disclosed in Embodiment 3, and the wheel-in-the-wheel power system 11 disclosed in Embodiment 5.

[0190] In this invention, for four-wheeled, three-wheeled, and two-wheeled golf bag vehicles, compared to the existing structures that place the power system inside the frame 2, the present invention provides a structure where the power system is installed inside the wheels. This not only simplifies the frame 2 structure of the electric golf bag vehicle and reduces the size of the frame 2, but also eliminates the need for a non-folding drive shaft between the frame 2 and the wheels, thereby achieving complete folding of the electric golf bag vehicle. This further reduces the space occupied by the folded electric golf bag vehicle, making its folding structure more compact and easier to use.

[0191] The above description is only a preferred embodiment of the present invention. Any method in which the wheels can be folded to both sides of the electric golf bag cart frame should fall within the scope of protection of the present invention.

[0192] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A foldable electric golf bag cart, characterized in that, When the electric golf bag vehicle is folded, the connecting rods (5) on both sides of the electric golf bag vehicle frame (2) and the wheels connected with the connecting rods (5) are folded on both sides of the frame (2); At least one wheel of the electric golf bag vehicle is internally provided with a wheel built-in power system (11) for driving the electric golf bag vehicle; The wheel built-in power system (11) comprises a motor (11-4) and a worm wheel (11-5) engaged with the output worm (11-6) of the motor (11-4), and the core shaft (11-7) of the worm wheel (11-5) is connected with the wheel hub corresponding to the wheel built-in power system (11); The wheel built-in power system (11) is installed in the space D formed inside the corresponding wheel; The wheel built-in power system (11) is installed in at least one wheel on both sides of the rear end of the frame (2), and the box (11-1) of the wheel built-in power system (11) is hinged with the corresponding connecting rod (5); The wheel built-in power system (11) comprises a box (11-1), which comprises a cavity for accommodating the worm wheel (11-5) and a support seat located at the rear side of the cavity for supporting the motor (11-4), and the axial direction of the output worm (11-6) is perpendicular to the axial direction of the wheel; The wheel built-in power system (11) further comprises a parking assembly, which comprises a friction plate (11-14) connected with the output worm (11-6) and a brake pad (11-15) capable of locking the friction plate (11-14); The parking assembly further comprises a brake stator (11-18), the brake pad (11-15) is located on the inner side of the brake stator (11-18), the friction plate (11-14) is installed on the side of the brake stator (11-18) facing the brake pad (11-15), and the brake stator (11-18) is wound with a coil (11-19) inside; The side of the brake stator (11-18) facing the brake pad (11-15) is provided with a return spring (11-21).

2. The electric golf bag cart according to claim 1, wherein, When the main tube assembly of the electric golf bag vehicle is folded, the connecting rods (5) on both sides of the frame (2) and the wheels connected with the connecting rods (5) are folded on both sides of the frame (2).

3. The electric golf bag cart according to claim 2, wherein, The lower main tube (6) of the main tube assembly is folded above the frame (2) by rotating forward, which synchronously drives the connecting rods (5) to rotate forward and fold on both sides of the frame (2) and the wheels connected with the connecting rods (5) to fold on the outer side of the corresponding connecting rod (5).

4. The electric golf bag cart according to claim 3, wherein, The lower main tube (6) is connected with the connecting rod (5) through a gear.

5. The electric golf bag cart according to claim 4, wherein, The lower end of the lower main tube (6) is provided with a bevel gear I (9) on both sides, and the end of the connecting rod (5) facing the frame (2) is provided with a bevel gear II (10) engaged with the bevel gear I (9), and the other end of the connecting rod (5) and the wheel assembly connected therewith are hinged.

6. The electric golf bag cart according to claim 1, wherein, The electric golf bag vehicle is a four-wheel golf bag vehicle or a three-wheel golf bag vehicle.

7. The electric golf bag cart according to claim 1, wherein, The electric golf bag vehicle is a two-wheel golf bag vehicle.

8. The electric golf bag cart according to claim 1, wherein, The motor (11-4) is a brushless motor.

9. The electric golf bag cart according to claim 1, wherein, The wheel built-in power system (11) comprises a motor (11-4) and a speed reduction assembly connected with the motor (11-4), and the speed reduction assembly is connected with an axle (21) of a corresponding wheel of the wheel built-in power system (11). The speed reduction assembly comprises a worm wheel (11-5) engaged with an output worm (11-6) of the motor (11-4) and a gear set for transmitting the torque of the worm wheel (11-5) to the axle (21) of the corresponding wheel.

10. The electric golf bag cart according to claim 8 or 9, wherein, The wheel built-in power system (11) further comprises a parking assembly connected with an end of the output worm (11-6).

11. The electric golf bag cart according to claim 1, wherein, A guide pin (11-22) parallel to the output worm (11-6) is arranged on the brake stator (11-18), and a guide notch (11-23) matched with the guide pin (11-22) is arranged on the outer ring surface of the brake disc (11-15).

12. The electric golf cart with foldable body according to claim 1, wherein, The rear end of the frame (2) of the electric golf bag vehicle is provided with a battery assembly opening, and the battery of the electric golf bag vehicle is loaded into a battery compartment in the frame (2) from the battery assembly opening. The rear side of the frame (2) of the electric golf bag vehicle is provided with a support wheel (26) capable of being horizontally retracted into the bottom of the frame (2).

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