A folding golf cart

Abstract

The present application provides a foldable golf trolley, which relates to the technical field of golf equipment. The foldable golf trolley includes: a base; a rotating shaft, which is rotatably connected to the base; a push rod, which is transmission-connected to the rotating shaft and drives the rotating shaft to rotate; a rear wheel assembly, which is movably connected to both ends of the rotating shaft; the rear wheel assembly includes a rear wheel shaft and a rear wheel, one end of the rear wheel shaft is mutually sleeved with the rotating shaft, the rear wheel is connected to the other end of the rear wheel shaft, and the rear wheel shaft is extended and retracted along the axial direction of the rotating shaft as the rotating shaft rotates. The foldable golf trolley provided by the present application can solve the problems of complex folding and large folding volume of the golf trolley, and avoid interference when the golf trolley is folded.

Description

Technical Field

[0001] The present application relates to the technical field of golf equipment, and in particular to a foldable golf trolley. Background Art

[0002] A golf trolley, also known as a golf bag cart, is mainly used to place and carry golf bags to reduce the pressure on golf participants to carry the golf bags when playing golf and going to the next hole.

[0003] At present, foldable golf carts are widely used because they have a folding function and can reduce the storage volume. However, the existing foldable golf carts have a complicated folding method, a large folding volume, and components are prone to mutual interference when folding. Summary of the invention

[0004] The present application provides a foldable golf trolley to solve the problems of complicated folding and large folding volume of the golf trolley and avoid interference when the golf trolley is folded.

[0005] The present application provides a foldable golf cart, comprising: a base; a rotating shaft, rotatably connected to the base; a push rod, which is transmission-connected to the rotating shaft and drives the rotating shaft to rotate; a rear wheel assembly, which is movably connected to both ends of the rotating shaft; the rear wheel assembly comprises a rear wheel shaft and a rear wheel, one end of the rear wheel shaft is mutually sleeved with the rotating shaft, the rear wheel is connected to the other end of the rear wheel shaft, and the rear wheel shaft is extended and retracted along the axial direction of the rotating shaft as the rotating shaft rotates.

[0006] The foldable golf trolley provided by the present application includes a base, a rotating shaft, a push rod and a rear wheel assembly. The rotating shaft is rotatably connected to the base, the push rod is transmission-connected to the rotating shaft, and the rear wheel assembly is movably connected to both ends of the rotating shaft. In the rear wheel assembly, one end of the rear wheel shaft is mutually sleeved with the rotating shaft, and the rear wheel is connected to the other end of the rear wheel shaft. With such an arrangement, the push rod can rotate relative to the base to achieve the folding of the push rod. At the same time, the push rod can drive the rotating shaft to rotate. As the rotating shaft rotates, the rear wheel shaft expands and contracts along the axial direction of the rotating shaft, driving the rear wheel to move toward or away from the rotating shaft, thereby storing the rear wheel.

[0007] The push rod rotates, driving the rotating shaft to rotate, and then driving the rear wheel assembly to move along the axial direction of the rotating shaft, so that the rear wheel assembly can be stored and extended. In this way, the foldable golf trolley has a simple transmission method and is easy to fold. In addition, the movement track of the rear wheel assembly covers a small area, and the folding and extension are flexible, and there will be no interference with other components. It can ensure that the foldable golf trolley can be folded smoothly without affecting the layout of other components of the whole vehicle.

[0008] In a possible embodiment, one of the rotating shaft and the rear wheel shaft is provided with a sliding member, and the other is provided with a spiral groove, which extends spirally along the rear wheel shaft or the rotating shaft; when the rotating shaft rotates, the sliding member slides along the spiral groove, causing the rear wheel shaft to move axially along the rotating shaft.

[0009] In this way, the sliding member extends into the spiral groove, and the sliding member slides along the spiral groove during the rotation of the rotating shaft. The position of the sliding member on the rotating shaft is fixed, and the spiral sliding of the sliding member along the spiral groove can be converted into the axial movement of the rear wheel shaft along the rotating shaft to realize the storage and extension of the rear wheel assembly.

[0010] In a possible implementation manner, a plurality of spiral grooves are arranged at intervals along the circumference of the rear wheel shaft or the rotating shaft.

[0011] In this way, when the rotating shaft drives the rear wheel shaft to move, each sliding member slides along each spiral groove, and the rotating shaft and the rear wheel shaft generate forces at different positions in the circumferential direction, so that the forces between the two are more uniform, and the relative movement of the two can be more stable and reliable. In addition, the movement trajectory of the rear wheel shaft is more accurate, and the golf cart has higher reliability and longer service life.

[0012] In a possible implementation manner, the rear wheel axle is inserted into the rotating shaft, the sliding member is arranged on the rotating shaft, and the spiral groove is arranged on the outer wall of the rear wheel axle.

[0013] In this way, the sliding member can be connected to the rotating shaft in a detachable manner, and the sliding member can be connected to the rotating shaft from the outer wall of the rotating shaft. After the rear wheel shaft is inserted into the rotating shaft, the position of the spiral groove can be adjusted by rotating the rear wheel shaft so that the sliding member can be inserted into the spiral groove accordingly. In this way, the assembly of the rear wheel shaft and the rotating shaft is more convenient, the assembly difficulty of the two can be reduced, and the assembly efficiency of the two can be improved.

[0014] In a possible embodiment, the rear wheel axle is provided with a first stopper, the base is provided with a limiting hole, and the limiting hole is provided with a second stopper; the second stopper is provided corresponding to the first stopper and matches with each other to hinder the rotational movement of the rear wheel axle.

[0015] In this way, during the movement of the rear wheel axle relative to the base, the first anti-rotation portion on the rear wheel axle and the second anti-rotation portion on the base cooperate with each other to hinder the rotational movement of the rear wheel axle in the circumferential direction, and force the rear wheel axle to axially extend and retract relative to the base to achieve the unfolding and folding of the rear wheel assembly.

[0016] In one possible embodiment, the first cross-section within at least part of the axial length of the rear wheel axle is non-circular to form a first stopper; the second cross-section within at least part of the axial length of the limiting hole is non-circular to form a second stopper; the first cross-section and the second cross-section match each other.

[0017] In a possible implementation manner, the limiting hole is formed by the base itself, or the base is connected to a limiting member, and the limiting member is provided with the limiting hole.

[0018] In this way, the limiting hole can be formed by directly drilling a hole on the side wall of the base. Alternatively, a limiting member can be detachably connected to the base, and a hole can be drilled on the limiting member to form the limiting hole.

[0019] In a possible embodiment, the first anti-rotation portion is a limiting strip protruding from the outer wall of the rear wheel axle, and the second anti-rotation portion is a limiting groove provided on the wall of the limiting hole; wherein, the limiting strip extends into the limiting groove, and the limiting strip extends along the axial direction of the rear wheel axle.

[0020] In this way, the limiting strip on the rear wheel axle moves along the limiting groove of the limiting member, limiting the rear wheel axle to move along its own axial direction, thereby ensuring the accuracy of the movement trajectory of the rear wheel axle. In addition, through the cooperation between the limiting strip and the limiting groove, the rear wheel axle can be positioned when it is installed, thereby ensuring the position accuracy of the rear wheel axle.

[0021] In a possible embodiment, the rear wheel axle includes a main shaft and a movable sleeve, the rear wheel is connected to the main shaft, and the movable sleeve is sleeved outside the main shaft; wherein the movable sleeve moves along the inner wall of the rotating shaft, and the movable sleeve drives the main shaft to move axially along the rotating shaft.

[0022] In this way, the movable sleeve and the main shaft can be processed separately, so that the spiral groove can be formed on the outer wall of the movable sleeve, simplifying the processing technology of the rear wheel shaft. In addition, the movable sleeve can be used to limit the moving range of the rear wheel shaft to prevent the rear wheel shaft from escaping from the rotating shaft.

[0023] In a possible implementation, one end of the movable sleeve facing the rear wheel is stopped at the outer periphery of the limiting hole, the main shaft passes through the limiting hole and extends out of the base, and the first anti-rotation part is a limiting strip protruding from the outer wall of the main shaft.

[0024] In this way, the main shaft can move through the limiting hole, and the protruding limiting strip is formed on the outer wall of the main shaft as the first anti-rotation part, so that the rear wheel shaft can be guided to move through the cooperation between the main shaft and the limiting hole. The movable sleeve can be limited in displacement by the limiting hole, and when the movable sleeve moves to the point where its end facing the rear wheel stops at the outer periphery of the limiting hole, the rear wheel assembly is in the deployed position.

[0025] In a possible implementation, a positioning groove is formed on the inner wall of the movable sleeve, and the positioning groove extends from one end of the movable sleeve facing the rear wheel to the other end of the movable sleeve, and the limiting strip on the outer wall of the main shaft extends into the positioning groove.

[0026] In this way, when the movable sleeve is sleeved on the outer wall of the main shaft, the movable sleeve and the main shaft can be positioned, so that the rear wheel shaft can be accurately positioned in the rotating shaft, ensuring that the sliding member on the rotating shaft can extend into the spiral groove on the rear wheel shaft.

[0027] In a possible implementation manner, the positioning groove does not pass through both axial ends of the movable sleeve.

[0028] In this way, the groove area on the inner wall of the movable sleeve is smaller, and the positioning groove has less influence on the structural strength of the movable sleeve, thereby ensuring the structural strength and reliability of the movable sleeve.

[0029] In a possible implementation manner, a fastener is inserted into the positioning groove, and the fastener fixes the movable sleeve to the main shaft.

[0030] In this way, the moving sleeve can be locked on the main shaft by the fastener. In addition, the part of the fastener on the outer wall of the moving sleeve can be completely accommodated in the positioning groove to prevent the fastener from affecting the movement of the moving sleeve in the rotating shaft.

[0031] In a possible implementation, the main shaft includes a core shaft and a guide sleeve, the rear wheel is connected to the core shaft, and the guide sleeve is sleeved on the core shaft.

[0032] In this way, the processing technology of the main shaft is simpler, and the mandrel and the guide sleeve can be processed separately, and then the guide sleeve is fixedly connected to the outside of the mandrel. In addition, by separately arranging the mandrel and the guide sleeve, the assembly method of the rear wheel assembly is also more flexible.

[0033] In a possible implementation manner, when the spiral groove is provided on the movable sleeve, the spiral groove extends to both axial ends of the movable sleeve.

[0034] In this way, the spiral groove has a sufficient extension length, and the sliding member on the rotating shaft slides between the two ends of the spiral groove, so that the rear wheel shaft has a sufficiently long moving distance. Therefore, when the push rod is in the folded state, the rear wheel shaft can be retracted into the rotating shaft as much as possible, thereby minimizing the storage volume of the golf cart.

[0035] In a possible implementation, the foldable golf trolley further includes: a front wheel assembly, including a connecting rod and a front wheel, wherein one end of the connecting rod is connected to the rotating shaft, and the front wheel is connected to the other end of the connecting rod; wherein the connecting rod moves as the rotating shaft rotates to drive the front wheel to move toward or away from the rotating shaft.

[0036] In this way, the push rod rotates to drive the rotating shaft to rotate, and then the rotating shaft rotates the connecting rod to make a rotary motion, and the connecting rod drives the front wheel to move along the front and rear direction of the base, so as to realize the storage and extension of the front wheel assembly. When the golf trolley is in a folded state, not only the push rod is folded on the base, but also the front wheel assembly is retracted inward. The front and rear dimensions of the golf trolley are reduced, and the folded volume of the whole vehicle is reduced, which makes it easier to store and carry the golf trolley.

[0037] In a possible embodiment, the connecting rod includes a first rod and a second rod, one end of the first rod is rotatably connected to the rotating shaft, the other end of the first rod is rotatably connected to one end of the second rod, and the other end of the second rod is connected to the front wheel; the base is provided with a guide seat, and the second rod passes through the guide seat so that the second rod moves in a straight line along the axial direction of the second rod.

[0038] In this way, when the rotating shaft drives the first rod to rotate, the first rod can also rotate relative to the rotating shaft, and the second rod and the first rod can also rotate relatively, so that the rotating shaft drives the connecting rod to extend and retract. Furthermore, the connecting rod drives the front wheel to move forward and backward, so that the front wheel assembly can be stored and extended.

[0039] Furthermore, the second rod is limited to extend in the horizontal direction by the guide seat, so that the second rod moves in a straight line along its own axis, and the traction force of the second rod on the front wheel is kept in the horizontal direction, ensuring that the front wheel assembly can be smoothly extended and retracted, and avoiding interference between the front wheel assembly and the ground or the base.

[0040] In a possible implementation manner, the foldable golf trolley further includes: a gear set, which is transmission-connected between the bottom end of the push rod and the rotating shaft.

[0041] In this way, the rotational energy is transmitted through the meshing gears in the gear set. The push rod transmits its rotational energy to the gear set, and the gear set then transmits the rotational energy to the rotating shaft to drive the rotating shaft to rotate.

[0042] In one possible embodiment, the gear set includes at least one pair of gear pairs, and the gear pairs include: a driving wheel connected to the bottom end of the push rod; a driven wheel sleeved on the outer wall of the rotating shaft and meshing with the driving wheel; wherein, when the push rod swings toward a direction close to the base, the driven wheel drives the rotating shaft to rotate in a first direction.

[0043] In this way, when the push rod rotates relative to the base, the push rod drives the driving wheel to rotate synchronously, the driving wheel drives the driven wheel meshing with it to rotate relatively, and the driven wheel then drives the rotating shaft to rotate synchronously. Among them, the rotation direction of the driven wheel is opposite to the rotation direction of the driving wheel, and the rotation direction of the rotating shaft is opposite to the rotation direction of the push rod.

[0044] In a possible implementation, the gear set includes two pairs of gear pairs, and the two driving wheels of the two pairs of gear pairs are respectively located on both sides of the push rod; a connecting shaft is connected between the two driving wheels, and the connecting shaft is connected to the push rod.

[0045] In this way, there are two transmission connection parts spaced apart between the push rod and the rotating shaft, the force transmission between the push rod and the rotating shaft is more balanced, and the movement coordination between the push rod and the rotating shaft is more stable and reliable. At the same time, the two pairs of gear pairs avoid the plane space occupied by the push rod itself, the driving wheel does not occupy the thickness space alone, and the thickness space occupied by the push rod and the driving wheel as a whole is smaller, which can reduce the volume of the whole vehicle after folding, making it easier to store the golf cart.

[0046] Furthermore, the two driving wheels are connected by a connecting shaft connected to the push rod, and the connecting shaft limits the two driving wheels to rotate synchronously, so that the transmission between the push rod and the rotating shaft is more accurate. Furthermore, the connecting shaft serves as the rotating shaft of the push rod, and the push rod rotates around the connecting shaft to realize the unfolding and folding of the push rod relative to the base.

[0047] In a possible implementation manner, the base is provided with a support member, and the rotating shaft and the connecting shaft are both passed through the support member.

[0048] In this way, the connecting shaft is passed through the support member, and the support member positions the rotation point of the push rod on the base. At the same time, the support member also supports the rotating shaft, making the installation of the rotating shaft on the base more stable and reliable. At this time, the center distance between the connecting hole and the mounting hole on the support member can be designed according to the center distance between the driving wheel and the driven wheel.

[0049] In a possible implementation, the driven wheel is connected to the rotating shaft via a fastener; when the sliding member is disposed on the rotating shaft, the fastener is a sliding member, and the fastener passes through the rotating shaft and extends into the spiral groove of the rear wheel shaft.

[0050] In this way, there is no need to set up additional sliding parts, which simplifies the connection structure between the rotating shaft and the rear wheel shaft, improves the assembly efficiency of the golf cart, and reduces the cost of the whole vehicle. In addition, the fastener itself has good rigidity and is firmly connected to the rotating shaft, which can improve the transmission reliability between the rotating shaft and the rear wheel shaft.

[0051] In a possible implementation, the bottom end of the push rod is connected to the rotating shaft; when the push rod swings toward the base, the push rod drives the rotating shaft to rotate in a second direction, which is opposite to the first direction.

[0052] In this way, the push rod can directly drive the rotating shaft to rotate. At this time, the rotation direction of the rotating shaft is the same as the rotation direction of the push rod. When the push rod and the rotating shaft are driven by a gear pair, when the push rod swings toward the base to the folded state, the rotation direction of the rotating shaft is the first direction. On the contrary, when the push rod is directly connected to the rotating shaft, when the push rod swings toward the base to the folded state, the rotation direction of the rotating shaft is the second direction opposite to the first direction.

[0053] In a possible implementation manner, the push rod can be extended and retracted along the length direction of the push rod, and has an extended state and a shortened state.

[0054] Thus, when the push rod is in the unfolded state farthest from the base, the push rod is in an extended state, the length of the push rod reaches the maximum, and the height of the push rod is suitable for the user to hold and push the golf trolley. When the push rod is in the folded state closest to the base, the push rod is in a shortened state, the length of the push rod reaches the minimum, and the plane space occupied by the push rod itself is the minimum, so that the folded volume of the golf trolley can be minimized.

[0055] In a possible implementation, the push rod includes: a lower rod, the bottom end of which is movably connected to the base; and an upper rod, the bottom end of which penetrates into the lower rod from the top end of the lower rod, and the upper rod can be telescopic in the lower rod.

[0056] In this way, the upper rod moves along the lower rod to achieve the extension and retraction of the push rod, and the push rod can be switched between an extended state and a shortened state.

[0057] In a possible implementation, the lower rod is provided with a telescopic switch, which can lock the upper rod to put the push rod in an extended state, and the telescopic switch can release the upper rod to allow the upper rod to move along the lower rod.

[0058] Thus, when the push rod is in an unfolded state away from the base, the push rod can be locked in an extended state by placing the telescopic switch in a locked state. At this time, the push rod is maintained at a maximum length, which is convenient for the user to hold. When the push rod is in a folded state close to the base, the push rod can be switched to a shortened state by placing the telescopic switch in an open state. At this time, the length of the push rod is minimized, so as to minimize the folded volume of the golf trolley.

[0059] In a possible implementation, the base is provided with a rotary switch, which is cooperatively connected with the push rod; the rotary switch has a locked state and a triggered state; when the rotary switch is in the locked state, the push rod is locked to the base; when the push rod is in a shortened state and the rotary switch is in a triggered state, the push rod is released and can rotate relative to the base.

[0060] Thus, when the rotary switch is in the locked state, the push rod can be locked in the posture when in the unfolded state. At this time, the push rod can be kept in the unfolded posture, so that the user can hold the push rod to push the golf trolley. When the rotary switch is in the triggered state, the rotary switch can release the push rod. At this time, the push rod can be rotated from the unfolded state to the folded state to realize the storage of the golf trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0062] Figure 1 A schematic diagram of the structure of the foldable golf trolley provided in an embodiment of the present application when in an unfolded state;

[0063] Figure 2 for Figure 1 A schematic diagram of the structure of the foldable golf cart in a folded state;

[0064] Figure 3 for Figure 1 A partial exploded structural diagram of a foldable golf cart;

[0065] Figure 4 for Figure 1 A partial structural diagram of a foldable golf cart;

[0066] Figure 5 for Figure 1 Another partial exploded structural diagram of the foldable golf cart;

[0067] Figure 6 for Figure 1 A partial cross-sectional view of a foldable golf cart;

[0068] Figure 7 for Figure 6 A partial enlarged view of the middle A;

[0069] Figure 8 for Figure 2 A partial cross-sectional view of a foldable golf cart;

[0070] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle;

[0071] Fig.10 for Figure 1A schematic diagram of the structure of a putter of a foldable golf trolley;

[0072] Fig.11 for Fig.10 Exploded view of the actuator shown in .

[0073] Description of reference numerals:

[0074] 10-Golf trolley;

[0075] 100-base; 200-push rod; 300-rear wheel assembly; 400-front wheel assembly; 500-rotating shaft; 600-gear set;

[0076] 110-limiting member; 120-supporting member; 130-guide seat; 140-rotating switch; 201-connecting beam; 210-lower rod; 220-upper rod; 310-rear wheel shaft; 320-rear wheel; 410-connecting rod; 420-front wheel; 510-sliding member; 520-second slot; 610-gear pair; 620-connecting shaft;

[0077] 111-limiting hole; 121-first slot; 211-telescopic switch; 212-rotation locking hole; 221-grip portion; 222-telescopic locking hole; 311-spindle; 312-moving sleeve; 411-first rod; 412-second rod; 611-driving wheel; 612-driven wheel;

[0078] 1111-limiting groove; 3101-spiral groove; 3102-limiting strip; 3111-core shaft; 3112-guide sleeve; 3121-positioning groove. DETAILED DESCRIPTION

[0079] As described in the background technology, the transmission structure used to achieve folding of the existing foldable golf trolley is generally complicated, resulting in a complicated folding method of the golf trolley and a large volume after folding, which is inconvenient to carry. In addition, the movement track of the transmission structure used to achieve folding covers a large area, which is easy to interfere with other parts of the vehicle, affecting the smooth folding of the golf trolley and the layout of other parts of the vehicle.

[0080] In view of this, an embodiment of the present application provides a foldable golf trolley, which includes a base, a rotating shaft, a push rod and a rear wheel assembly. The rotating shaft is rotatably connected to the base, the push rod is transmission-connected to the rotating shaft, and the rear wheel assembly is movably connected to both ends of the rotating shaft. In the rear wheel assembly, one end of the rear wheel shaft is mutually sleeved with the rotating shaft, and the rear wheel is connected to the other end of the rear wheel shaft. With such an arrangement, the push rod can rotate relative to the base to achieve the folding of the push rod. At the same time, the push rod can drive the rotating shaft to rotate. As the rotating shaft rotates, the rear wheel shaft expands and contracts along the axial direction of the rotating shaft, driving the rear wheel to move toward or away from the rotating shaft, thereby storing the rear wheel.

[0081] The push rod rotates, driving the rotating shaft to rotate, and then driving the rear wheel assembly to move along the axial direction of the rotating shaft, so that the rear wheel assembly can be stored and extended. In this way, the foldable golf trolley has a simple transmission method and is easy to fold. In addition, the movement track of the rear wheel assembly covers a small area, and the folding and extension are flexible, and there will be no interference with other components. It can ensure that the foldable golf trolley can be folded smoothly without affecting the layout of other components of the whole vehicle.

[0082] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0083] Figure 1 This is a schematic structural diagram of a foldable golf trolley provided in an embodiment of the present application when in an unfolded state. Figure 2 for Figure 1 A schematic diagram of the structure of the foldable golf cart in the folded state.

[0084] Reference Figure 1 and Figure 2 As shown, the embodiment of the present application provides a foldable golf trolley (hereinafter referred to as a golf trolley), and the golf trolley 10 includes a base 100, a push rod 200, and a wheel mechanism. The base 100 is located at the bottom of the whole vehicle and is the main frame of the golf trolley 10. The push rod 200 is movably connected to the base 100, and the bottom end of the push rod 200 can rotate relative to the base 100 so that the push rod 200 rotates toward or away from the base 100. The wheel mechanism is connected to the base 100, and the wheel mechanism can roll along the ground to realize the walking of the golf trolley 10.

[0085] Reference Figure 1As shown, when the golf trolley 10 is in the unfolded state, the push rod 200 can be relatively disposed on the base 100. At this time, on the basis of the base 100 playing the main supporting role, the push rod 200 also serves as the stand of the golf trolley 10, and golf tools such as golf bags can be supported on the base 100 and lean on the push rod 200. Thus, the function of the golf trolley 10 to carry golf tools is realized.

[0086] Reference Figure 2 As shown, when the golf trolley 10 is in a folded state, the push rod 200 can be rotated to be folded on the base 100, for example, the push rod 200 is relatively parallel to the base 100 and supported on the top of the base 100. At this time, the space occupied by the push rod 200 alone is significantly reduced, and the push rod 200 does not even occupy the height space of the golf trolley 10 alone. For example, as shown in the figure, the push rod 200 is located in the height space of the wheel mechanism. Therefore, the volume of the golf trolley 10 is significantly reduced, which is convenient for storing and carrying the golf trolley 10.

[0087] Continue to refer to Figure 1 and Figure 2 The wheel mechanism may include a rear wheel assembly 300, which may be connected to the rear end of the base 100 along the travel direction of the golf trolley 10. The wheel mechanism may also include a front wheel assembly 400, which may be connected to the front end of the base 100 along the travel direction of the golf trolley 10.

[0088] For example, the wheel mechanism may include two rear wheel assemblies 300, which may be located at the left and right sides of the base 100, respectively, and the two rear wheel assemblies 300 may be symmetrically arranged along the center line of the base 100. The wheel mechanism may include a front wheel assembly 400, which may be located at the front end of the base 100, and the front wheel assembly 400 may be located on the center line of the base 100. In this way, the two rear wheel assemblies 300 and the one front wheel assembly 400 form a triangular structure, which can ensure that the base 100 is stably supported, so that the golf trolley 10 can move stably.

[0089] In addition, the rear wheel assembly 300 can be connected to the base 100 in a manner of rotating around its own central axis, and the rear wheel assembly 300 is only used to realize the forward and backward movement of the golf trolley 10. In addition to rotating around its own central axis, the front wheel assembly 400 can also be connected to the base 100 in a manner of rotating 360°, and the front wheel assembly 400 can be used to change the walking direction of the golf trolley 10. Of course, in other examples, the rear wheel assembly 300 can also rotate 360°, while the front wheel assembly 400 only rotates around its own central axis, or both the front wheel assembly 400 and the rear wheel assembly 300 can realize 360° rotation, and this embodiment does not make specific restrictions on this.

[0090] Figure 3 for Figure 1 A partial exploded view of the foldable golf cart in . Figure 3 As shown, the golf trolley 10 further includes a rotating shaft 500, which is rotatably connected to the base 100 and can rotate around its own axis. The extending direction of the rotating shaft 500 can be perpendicular to the running direction of the golf trolley 10. For example, taking the running direction of the golf trolley 10 as the length direction of the base 100, the rotating shaft 500 can extend along the width direction of the base 100.

[0091] Exemplarily, the side walls on the left and right sides of the base 100 may be provided with mounting holes (not shown in the figure), the mounting holes on both sides may be arranged oppositely, and the two ends of the rotating shaft 500 may be inserted through the mounting holes on both sides of the base 100. Alternatively, a support structure may be provided in the base 100, and the support structure may be provided, for example, near the side walls on the left and right sides of the base 100, and the two ends of the rotating shaft 500 may be inserted through the support structure. Alternatively, while the side walls on the left and right sides of the base 100 are provided with mounting holes, a support structure (such as the support member 120 mentioned later) is also provided in the base 100, the middle part of the rotating shaft 500 is supported on (for example, passes through) the support structure, and the two ends of the rotating shaft 500 are inserted through the mounting holes. In this way, the rotating shaft 500 can be supported on the base 100, and the rotating shaft 500 can rotate along the hole wall of the mounting hole to realize the rotation of the rotating shaft 500.

[0092] The side walls of the base 100 may also be connected to limit members 110, and the limit members 110 may be installed on the outer side walls of the base 100. The limit members 110 may be disposed at both ends of the rotating shaft 500, and the end faces of the rotating shaft 500 abut against the end faces of the limit members 110 to limit the axial position of the rotating shaft 500 without restricting the rotation of the rotating shaft 500.

[0093] Alternatively, the base 100 itself may be used to form a limiting structure, for example, the side walls on the left and right sides of the base 100 itself may be used as limiting walls. The side walls on the left and right sides of the base 100 itself are disposed at both ends of the rotating shaft 500, and the end surface of the rotating shaft 500 abuts against the inner side wall of the base 100, so as to axially limit the rotating shaft 500 without restricting the rotation of the rotating shaft 500.

[0094] The push rod 200 is transmission-connected with the rotating shaft 500. When the push rod 200 rotates relative to the base 100, the push rod 200 can drive the rotating shaft 500 to rotate.

[0095] In some embodiments, the push rod 200 can be directly connected to the rotating shaft 500, for example, the bottom end of the push rod 200 is fixedly connected to the outer wall of the rotating shaft 500. The push rod 200 can be pushed to swing on the base 100, so that the push rod 200 directly drives the rotating shaft 500 to rotate. In this case, the rotating shaft 500 also serves as the installation base of the push rod 200, and the push rod 200 is rotatably connected to the base 100 through the rotating shaft 500.

[0096] In other embodiments, the push rod 200 may be connected to the rotating shaft 500 through a transmission structure, and the push rod 200 does not directly drive the rotating shaft 500 to rotate, but drives the rotating shaft 500 to rotate through the transmission structure. In this case, the push rod 200 (for example, the bottom end of the push rod 200) and the base 100 may be connected through another rotating shaft (for example, the connecting shaft 620 mentioned later), and the rotating shaft is relatively fixed at a certain position of the base 100, and the push rod 200 can swing relative to the base 100 around the rotating shaft.

[0097] It should be noted that when the push rod 200 is directly connected to the rotating shaft 500, while the push rod 200 drives the rotating shaft 500 to move, the part of the push rod 200 connected to the rotating shaft 500 will move in the circumferential direction of the rotating shaft 500. In this way, the position of the push rod 200 (for example, the bottom end of the push rod 200) on the base 100 is not fixed, and the movement trajectory of the push rod 200 covers a large range, which may interfere with other parts of the vehicle. In addition, it is necessary to design the movement trajectory of the push rod 200 according to the posture of the push rod 200 when the golf trolley 10 is in the unfolded state, and then design the connection position of the push rod 200 and the rotating shaft 500 accordingly, which will increase the design difficulty of the golf trolley 10.

[0098] Therefore, the following description will be made by taking the example that the push rod 200 is transmission-connected to the rotating shaft 500 via the transmission structure.

[0099] Continue to refer to Figure 3 The transmission structure connected between the push rod 200 and the rotating shaft 500 may include a gear set 600, and the gear set 600 may be connected between the bottom end of the push rod 200 and the rotating shaft 500. The gear set 600 includes gears that mesh with each other, and the rotational energy is transmitted through these gears. Therefore, the push rod 200 transmits its rotational energy to the gear set 600, and the gear set 600 then transmits the rotational energy to the rotating shaft 500, so as to drive the rotating shaft 500 to rotate.

[0100] Specifically, the gear set 600 may include a gear pair 610, and the gear pair 610 includes a driving wheel 611 and a driven wheel 612 that mesh with each other. The driving wheel 611 is connected to the bottom end of the push rod 200, and the driven wheel 612 is sleeved on the outer wall of the rotating shaft 500, and the driven wheel 612 meshes with the driving wheel 611. In this way, when the push rod 200 rotates relative to the base 100, the push rod 200 drives the driving wheel 611 to rotate synchronously, and the driving wheel 611 drives the driven wheel 612 meshed with it to rotate relatively, and the driven wheel 612 then drives the rotating shaft 500 to rotate synchronously. In this way, the rotation energy of the push rod 200 is transmitted to the rotating shaft 500, and during the rotation of the push rod 200, the rotating shaft 500 also rotates accordingly.

[0101] As for the number design of the gear pairs 610, as an implementation method, the gear set 600 may include two pairs of gear pairs 610. The two driving wheels 611 in the two pairs of gear pairs 610 may be located on the left and right sides of the push rod 200, respectively, and the positions of the two driven wheels 612 in the two pairs of gear pairs 610 on the outer wall of the rotating shaft 500 may correspond to the two driving wheels 611, respectively, so as to reliably achieve the meshing of the driven wheels 612 and the driving wheels 611. In this way, there are two transmission connection parts spaced apart between the push rod 200 and the rotating shaft 500, the force transmission effect between the push rod 200 and the rotating shaft 500 is more balanced, the transmission connection between the push rod 200 and the rotating shaft 500 is more reliable, and the movement coordination between the two is more stable.

[0102] In addition, the push rod 200 in this embodiment may be flat, and the flat push rod 200 may extend in a direction perpendicular to the travel direction of the golf trolley 10 (e.g., the width direction of the base 100). On one hand, the surface area of ​​the push rod 200 is larger, which can enhance the structural strength and reliability of the push rod 200. On the other hand, the thickness of the push rod 200 in the travel direction of the golf trolley 10 (e.g., the length direction of the base 100) is smaller, which is conducive to reducing the overall volume of the golf trolley 10 and improving the lightness of the golf trolley 10.

[0103] For the flat push rod 200, by arranging two pairs of gear pairs 610 on the left and right sides of the push rod 200, respectively, with a sufficient spacing between the two pairs of gear pairs 610, sufficient transmission force can be generated on both sides of the push rod 200, so that the push rod 200 can drive the rotating shaft 500 to rotate more stably and reliably. At the same time, the two pairs of gear pairs 610 avoid the plane space occupied by the push rod 200 itself, and the driving wheel 611 will not occupy the thickness space alone, and the thickness space of the driving wheel 611 and the thickness space of the push rod 200 can overlap. In this way, the thickness space occupied by the push rod 200 and the driving wheel 611 as a whole is smaller, and after the golf trolley 10 is folded, the push rod 200 can be closer to the rotating shaft 500, which can reduce the volume of the entire vehicle after folding, making it easier to store the golf trolley 10.

[0104] On this basis, the two driving wheels 611 of the two pairs of gear pairs 610 can be connected by a connecting shaft 620, and the connecting shaft 620 is connected to the push rod 200, so that the two driving wheels 611 rotate with the push rod 200. The connecting shaft 620 limits the synchronous rotation of the two driving wheels 611, ensures the smooth rotation of the push rod 200, and the transmission between the push rod 200 and the rotating shaft 500 is more accurate. In addition, the connecting shaft 620 can be used as the rotating shaft of the push rod 200, and the push rod 200 rotates around the connecting shaft 620 to realize the expansion and folding of the push rod 200 relative to the base 100.

[0105] Continue to refer to Figure 3 , the connecting shaft 620 can be located outside the thickness space of the push rod 200. Taking the golf trolley 10 in the unfolded state as a reference, the connecting shaft 620 can be specifically located on the side of the push rod 200 facing the front end of the base 100. In this way, the connecting shaft 620 serves as the rotation center of the driving wheel 611, which can make the driving wheel 611 closer to the rotating shaft 500 relative to the push rod 200, so as to facilitate the engagement of the driving wheel 611 with the driven wheel 612 on the rotating shaft 500. In addition, when the golf trolley 10 is in the unfolded state, the push rod 200 can occupy the space between the connecting shaft 620 and the rear end of the base 100, which can make full use of the layout space of the base 100 and reduce the volume of the whole vehicle. In addition, a certain distance can be reserved between the connecting shaft 620 and the bottom end surface of the push rod 200, so as to make full use of the radial space of the driving wheel 611, and reduce the gap between the push rod 200 and the rotating shaft 500 while the push rod 200 avoids the rotating shaft 500. A certain force arm is formed between the connecting shaft 620 and the end of the push rod 200 (close to the rotating shaft 500 ), thereby improving the stability and reliability of the push rod 200 during the rotation process.

[0106] When the connecting shaft 620 is located on the side of the push rod 200 facing the front end of the base 100, a connecting beam 201 can be provided on the side plate surface of the push rod 200 facing the front end of the base 100, and the connecting beam 201 can be located at the bottom end of the push rod 200. Connecting plates can be extended from both ends of the connecting beam 201, and the rotating shaft 500 can be passed through the connecting plates at both ends of the connecting beam 201 to fix the connecting shaft 620 on the push rod 200, so as to realize that the two driving wheels 611 of the two pairs of gear pairs 610 are arranged on the left and right sides of the push rod 200. Exemplarily, the connecting beam 201 can be connected to the push rod 200 by fasteners such as bolts and screws, or the connecting beam 201 can be welded, bonded or even integrally formed on the push rod 200.

[0107] In this regard, in order to locate the rotation point of the push rod 200 on the base 100, a support member 120 may be further provided on the base 100. The support member 120 may be fixedly connected to the inner bottom wall of the base 100, for example, the support member 120 is connected to the inner bottom wall of the base 100 by fasteners such as bolts and screws, or the support member 120 is welded, bonded or even integrally formed on the inner bottom wall of the push base 100. The support member 120 extends to the bottom end of the push rod 200, and the connecting shaft 620 may be penetrated on the support member 120. For example, a connecting hole is provided at the top of the support member 120, and the connecting hole passes through the left and right ends of the support member 120, and the connecting shaft 620 is penetrated in the connecting hole of the support member 120.

[0108] On this basis, the support member 120 can also support the rotating shaft 500 rotatably connected to the base 100. For example, the support member 120 can also be provided with a mounting hole, which also runs through the left and right ends of the support member 120, and the rotating shaft 500 passes through the mounting hole of the support member 120.

[0109] In this way, the support member 120 is used for the connecting shaft 620 between the two driving wheels 611 to pass through, and the support member 120 is also used for the rotating shaft 500 to pass through. In this way, there are more contact points between the rotating shaft 500 and the base 100, and the rotating shaft 500 is installed on the base 100 more stably and reliably. At this time, the center distance between the connecting hole and the mounting hole on the support member 120 can be designed according to the center distance between the driving wheel 611 and the driven wheel 612 in the gear pair 610. The structural design of the support member 120 is matched with that of the gear pair 610 to realize the power transmission between the push rod 200 and the rotating shaft 500.

[0110] In addition, as mentioned above, the driving wheels 611 in the two gear pairs 610 are respectively arranged on the left and right sides of the push rod 200, so that the support member 120 located between the two driving wheels 611 can be arranged corresponding to the push rod 200. Therefore, the center lines of the push rod 200 and the support member 120 can be located on the center line of the base 100, and the golf trolley 10 can be designed as an axisymmetric structure. The golf trolley 10 is subjected to balanced force, the force transmission path is more accurate, the golf trolley 10 has good stability, high reliability, and a longer service life.

[0111] It should be noted that when the push rod 200 and the rotating shaft 500 are driven by the gear pair 610, the rotation direction of the driving wheel 611 in the gear pair 610 is consistent with the rotation direction of the push rod 200, and the rotation direction of the driven wheel 612 meshing with the driving wheel 611 is opposite to the rotation direction of the driving wheel 611. Therefore, the rotation direction of the rotating shaft 500 is opposite to the rotation direction of the push rod 200. For example, when the push rod 200 swings toward the direction close to the base 100 to the folded state, the rotation direction of the push rod 200 is clockwise. During this process, the rotating shaft 500 rotates in the counterclockwise direction. On the contrary, when the push rod 200 swings toward the direction away from the base 100 to the unfolded state, the rotation direction of the push rod 200 is counterclockwise. During this process, the rotating shaft 500 rotates in the clockwise direction.

[0112] Different from this, when the bottom end of the push rod 200 is directly fixedly connected to the rotating shaft 500, the push rod 200 directly transmits the rotation energy to the rotating shaft 500, and the rotation direction of the rotating shaft 500 is the same as the rotation direction of the push rod 200. Continuing to take the example that when the push rod 200 swings toward the direction close to the base 100 to the folded state, the rotation direction of the push rod 200 is the clockwise direction. During this process, the rotating shaft 500 rotates in the clockwise direction. On the contrary, when the push rod 200 swings away from the base 100 to the unfolded state, the rotation direction of the push rod 200 is the counterclockwise direction. During this process, the rotating shaft 500 rotates in the counterclockwise direction.

[0113] To facilitate the description of the movement of the rear wheel assembly 300 driven by the rotating shaft 500, in this embodiment, when the push rod 200 and the rotating shaft 500 are driven by the gear pair 610, when the push rod 200 swings toward the direction close to the base 100 to the folded state, the rotation direction of the rotating shaft 500 driven by the driven wheel 612 is defined as the first direction. When the push rod 200 is directly connected to the rotating shaft 500, when the push rod 200 swings toward the direction close to the base 100 to the folded state, the rotation direction of the rotating shaft 500 driven by the push rod 200 is defined as the second direction. Then, the second direction is opposite to the first direction.

[0114] Figure 4 for Figure 1 Partial structural diagram of the foldable golf cart in. Figure 4 As shown in the figure, the structure of the golf trolley 10 is shown after the putter 200 and the base 100 are removed. As shown in the figure, the rear wheel assembly 300 is movably connected to both ends of the rotating shaft 500. During the rotation process of the rotating shaft 500, the rear wheel assembly 300 can be driven to move, so as to realize the storage and extension of the rear wheel assembly 300.

[0115] Specifically, the rear wheel assembly 300 may include a rear wheel shaft 310 and a rear wheel 320, one end of the rear wheel shaft 310 is mutually sleeved with the rotating shaft 500, and the rear wheel 320 is connected to the other end of the rear wheel shaft 310. With the rotation of the rotating shaft 500, the rear wheel shaft 310 can move along the axial direction of the rotating shaft 500, so as to realize the axial extension and contraction of the rear wheel assembly 300.

[0116] As an embodiment, the rear wheel axle 310 can be inserted into the rotating shaft 500, and the outer wall of the rear wheel axle 310 slides along the inner wall of the rotating shaft 500. As another embodiment, the rear wheel axle 310 can also be sleeved outside the rotating shaft 500, and the inner wall of the rear wheel axle 310 slides along the outer wall of the rotating shaft. The following description is based on the example that the rear wheel axle 310 is inserted into the rotating shaft 500.

[0117] The base 100 is provided with a limiting hole 111, and the limiting hole 111 is, for example, located on the left and right sides of the base 100. One end of the rear wheel shaft 310 extends into the base through the limiting hole 111 to achieve mutual connection between the rear wheel shaft 310 and the rotating shaft 500. When the two side outer walls of the base 100 can be connected to the limiting member 110, the limiting hole 111 can be provided on the limiting member 110. When the base 100 is not additionally provided with the limiting member 110, the limiting hole 111 can be directly provided on the base 100 itself, for example, the limiting hole 111 is provided on the side walls on the left and right sides of the base 100.

[0118] When the push rod 200 swings in a direction away from the base 100 to the unfolded state, the push rod 200 drives the rotating shaft 500 to rotate, and the rear wheel shaft 310 moves toward the outside of the rotating shaft 500 and gradually extends out of the rotating shaft 500 until the rear wheel 320 moves to the position farthest from the outer wall of the base 100, and the rear wheel assembly 300 moves to the unfolded position. On the contrary, when the push rod 200 swings in a direction close to the base 100 to the folded state, the push rod 200 drives the rotating shaft 500 to rotate, and the rear wheel shaft 310 moves toward the inside of the rotating shaft 500 and gradually retracts into the rotating shaft 500 until the rear wheel 320 moves to the position closest to the outer wall of the base 100 (for example, the rear wheel 320 abuts against the outer wall of the base 100), and the rear wheel assembly 300 moves to the stored position.

[0119] In this configuration, the push rod 200 rotates to drive the rotating shaft 500 to rotate, and further, the rotating shaft 500 rotates to drive the rear wheel assembly 300 to move along the axial direction of the rotating shaft 500, thereby realizing the storage and extension of the rear wheel assembly 300. When the golf trolley 10 is in the folded state, not only the push rod 200 is folded on the base 100, but the rear wheel assembly 300 also retracts inwardly. The left and right dimensions of the golf trolley 10 are reduced, and the folded volume of the entire vehicle is reduced, making it easier to store and carry the golf trolley 10.

[0120] Furthermore, the rear wheel assembly 300 moves along the axial direction of the rotating shaft 500, and the movement mode is simple, which is convenient for the movement structure design of the golf trolley 10 and reduces the design and development cost of the golf trolley 10. At the same time, the movement track of the rear wheel assembly 300 covers a small area, and the rear wheel assembly 300 is flexible to fold and unfold without interfering with other parts of the vehicle. It can ensure that the golf trolley 10 can be folded and unfolded smoothly without affecting the layout design of other parts of the vehicle.

[0121] Figure 5 for Figure 1 Another partial exploded structural diagram of the foldable golf cart in FIG. Figure 6 for Figure 1 A partial cross-sectional view of a foldable golf cart. Figure 7 for Figure 6 A partial enlarged view of point A in the middle. Figure 8 for Figure 2 A partial cross-sectional view of a foldable golf cart. Fig. 9 for Figure 8 A partial enlarged view of point B in the middle.

[0122] Reference Figure 5 As shown in the figure, Figure 4 The partial structure of the golf trolley 10 is further decomposed. As shown in the figure, in order to realize the axial extension and contraction of the rear wheel assembly 300 driven by the rotating shaft 500, one of the rotating shaft 500 and the rear wheel shaft 310 can be provided with a sliding member 510, and the other can be provided with a spiral groove 3101. When the rear wheel shaft 310 is inserted into the rotating shaft 500, the spiral groove 3101 spirally extends along the inner wall of the rotating shaft 500 or the outer wall of the rear wheel shaft 310, and the sliding member 510 extends into the spiral groove 3101, and the sliding member 510 can slide along the spiral groove 3101.

[0123] During the rotation of the rotating shaft 500, the position of the sliding member 510 on the rotating shaft 500 is fixed. The sliding member 510 slides along the spiral groove 3101, which can be converted into the axial movement of the rear wheel shaft 310 along the rotating shaft 500. Therefore, the rear wheel shaft 310 is extended and retracted along the axial direction of the rotating shaft 500, so that the rear wheel assembly 300 can be stored and extended.

[0124] In some embodiments, one of the rotating shaft 500 and the rear wheel shaft 310 may be provided with a plurality of spiral grooves 3101, and each spiral groove 3101 may be arranged at intervals along the circumference of the rotating shaft 500 or the rear wheel shaft 310. Correspondingly, the other of the rotating shaft 500 and the rear wheel shaft 310 may also be connected with a plurality of sliding members 510, and the sliding members 510 may also be arranged at intervals along the circumference of the rotating shaft 500 or the rear wheel shaft 310. Each sliding member 510 corresponds to each spiral groove 3101 one by one, and each sliding member 510 extends into each spiral groove 3101. In this way, when the rotating shaft 500 drives the rear wheel shaft 310 to move, each sliding member 510 slides along each spiral groove 3101, and the rotating shaft 500 and the rear wheel shaft 310 generate forces at different positions in the circumferential direction, so that the forces between the two are more uniform, and the relative movement between the two can be made more stable and reliable. In addition, the movement trajectory of the rear wheel axle 310 is more precise, and the golf trolley 10 has higher reliability and longer service life.

[0125] For example, the spiral grooves 3101 may be evenly spaced along the circumference of one of the rotating shaft 500 and the rear wheel shaft 310, and correspondingly, the sliding members 510 may also be evenly spaced along the circumference of the other of the rotating shaft 500 and the rear wheel shaft 310. In this way, the force uniformity between the rear wheel shaft 310 and the rotating shaft 500 is good, and the movement accuracy of the golf cart 10 is high. For example, three, four or more spiral grooves 3101 are evenly spaced along the circumference of one of the inner wall of the rotating shaft 500 and the outer wall of the rear wheel shaft 310, and three, four or more sliding members 510 are evenly spaced along the circumference of the other of the rotating shaft 500 and the rear wheel shaft 310.

[0126] When the rear wheel shaft 310 is inserted into the rotating shaft 500, the spiral groove 3101 can be set on the outer wall of the rear wheel shaft 310, and the sliding member 510 can be set on the rotating shaft 500. The sliding member 510 can be connected to the rotating shaft 500 in a detachable manner, and the sliding member 510 can be connected to the rotating shaft 500 from the outer wall of the rotating shaft 500. After the rear wheel shaft 310 is inserted into the rotating shaft 500, the position of the spiral groove 3101 can be adjusted by rotating the rear wheel shaft 310, so that the sliding member 510 can be inserted into the spiral groove 3101 accordingly. When the sliding member 510 is set on the rear wheel shaft 310 and the spiral groove 3101 is set on the inner wall of the rotating shaft 500, it is avoided that the spiral groove 3101 cannot be observed from the outside of the rotating shaft 500, and the sliding member 510 cannot be positioned, and the inconvenience caused by the need to constantly grope to adjust the relative position of the rear wheel shaft 310 and the rotating shaft 500 is avoided. In this way, the rear wheel shaft 310 and the rotating shaft 500 can be more easily assembled, the assembly difficulty of the two can be reduced, and the assembly efficiency of the two can be improved.

[0127] Of course, if it is easy to assemble the rear wheel shaft 310 and the rotating shaft 500, the spiral groove 3101 can also be set on the inner wall of the rotating shaft 500, and the sliding member 510 can be set on the rear wheel shaft 310. This embodiment does not limit this. The following description is based on the example that the sliding member 510 is set on the rotating shaft 500 and the spiral groove 3101 is set on the outer wall of the rear wheel shaft 310.

[0128] In addition, when the push rod 200 and the rotating shaft 500 are connected by the aforementioned gear pair 610, the driven wheel 612 sleeved outside the rotating shaft 500 can be fixedly connected to the rotating shaft 500 by fasteners such as bolts, screws or rivets. At this time, the fastener connected to the driven wheel 612 can be used as a sliding member 510 connected to the rotating shaft 500, and the fastener passes through the rotating shaft 500 and extends into the spiral groove 3101 on the outer wall of the rear wheel shaft 310, so that the rotating shaft 500 drives the rear wheel shaft 310 to move. In this way, there is no need to specially set up an additional sliding member 510, which simplifies the connection structure of the rotating shaft 500 and the rear wheel shaft 310, can improve the whole vehicle assembly efficiency of the golf trolley 10, and reduce the whole vehicle cost. In addition, the fastener itself has good rigidity, and the fastener is firmly connected to the rotating shaft 500, which can improve the transmission reliability between the rotating shaft 500 and the rear wheel shaft 310.

[0129] For ease of description, in this embodiment, the end of the rear wheel shaft 310 facing the rear wheel 320 is defined as the first end of the rear wheel 320, and the end of the rear wheel shaft 310 facing away from the rear wheel 320 is defined as the second end of the rear wheel 320. In addition, the spiral direction of the rear wheel shaft 310 is defined by the extension direction of the spiral groove 3101 from the first end of the rear wheel shaft 310 to the second end of the rear wheel shaft 310. In order to match the motion state of the rear wheel assembly 300 with the motion state of the entire machine, the spiral direction of the spiral groove 3101 should be designed.

[0130] Specifically, the spiral direction of the spiral groove 3101 should be opposite to the rotation direction of the rotating shaft 500 when the push rod 200 is folded toward the base 100. Therefore, when the push rod 200 swings away from the base 100 to the unfolded state, the sliding member 510 on the rotating shaft 500 slides along the spiral groove 3101 from the first end of the rear wheel shaft 310 to the second end of the rear wheel shaft 310, so that the rear wheel shaft 310 moves toward the outside of the rotating shaft 500 and reaches the unfolded position (see Figure 6 and Figure 7 When the push rod 200 swings toward the base 100 to the folded state, the sliding member 510 on the rotating shaft 500 slides along the spiral groove 3101 from the second end of the rear wheel shaft 310 to the first end of the rear wheel shaft 310, so that the rear wheel shaft 310 moves toward the inside of the rotating shaft 500 to reach the storage position (see Figure 8 and Fig. 9 as shown).

[0131] Taking the example of transmission between the push rod 200 and the rotating shaft 500 through the gear pair 610, when the push rod 200 swings to the folded state, the rotation direction of the rotating shaft 500 is the first direction, and the spiral direction of the spiral groove 3101 on the outer wall of the rear wheel shaft 310 is the second direction. Taking the example of direct connection between the push rod 200 and the rotating shaft 500, when the push rod 200 swings to the folded state, the rotation direction of the rotating shaft 500 is the second direction, and the spiral direction of the spiral groove 3101 on the outer wall of the rear wheel shaft 310 is the first direction.

[0132] It should be noted that in order to achieve axial movement of the rear wheel shaft 310 along the rotating shaft 500, it is necessary to overcome a large friction force. In particular, when the rear wheel 320 contacts the ground, since the rolling friction is much smaller than the sliding friction, the rear wheel 320 is more likely to roll around its own axis, and is not easy to slide axially along its axis. If the sliding member 510 on the rotating shaft 500 and the spiral groove 3101 on the rear wheel shaft 310 are simply matched, it is possible that the sliding member 510 is only used to move the rear wheel shaft 310, and the sliding member 510 is in a stationary state in the spiral groove 3101. At this time, the rear wheel shaft 310 will rotate synchronously with the rotating shaft 500, and the rear wheel shaft 310 will not move axially along the rotating shaft 500.

[0133] Therefore, in this embodiment, the rear wheel shaft 310 may also be provided with a first anti-rotation portion, and the first anti-rotation portion covers at least part of the axial length of the rear wheel shaft 310. Correspondingly, the limiting hole 111 on the base 100 through which the rear wheel shaft 310 passes may also be provided with a second anti-rotation portion. The positions of the first anti-rotation portion and the second anti-rotation portion correspond to each other, and the first anti-rotation portion and the second anti-rotation portion match and cooperate with each other, so as to hinder the rotational movement of the rear wheel shaft 310.

[0134] The first cross section of the rear wheel axle 310 within at least part of the axial length is non-circular to form a first anti-rotation portion, and the second cross section of the limiting hole 111 within at least part of the axial length is also non-circular to form a second anti-rotation portion. In this way, through the cooperation of the first anti-rotation portion and the second anti-rotation portion, the rear wheel axle 310 can be hindered from rotating relative to the base 100, and the rear wheel axle 310 can be prevented from rotating synchronously with the rotating shaft 500. In addition, the movement of the rear wheel axle 310 relative to the rotating shaft 500 can also be guided.

[0135] The first anti-rotation portion may extend along the axial direction of the rear wheel axle 310. In this way, the first anti-rotation portion may enable the rear wheel axle 310 to move along its own axial direction, and realize the expansion and contraction of the rear wheel assembly with the shortest movement path.

[0136] In some embodiments, the first stop portion is a protruding structure protruding from the outer wall of the rear wheel axle 310, and the second stop portion is a sliding groove structure opened on the hole wall of the limiting hole 111, or the first stop portion is a sliding groove structure opened on the outer wall of the rear wheel axle 310, and the second stop portion is a protruding structure protruding from the hole wall of the limiting hole 111.

[0137] The protruding structure and the slide groove structure make the first cross section and the second cross section non-circular. The non-circular cross section in the above embodiment cooperates to achieve non-rotational movement between the rear wheel shaft and the limiting hole, and only axial movement. The protruding structure slides along the slide groove structure to achieve movement of the rear wheel shaft 310 relative to the base 100. The protruding structure can be integrally formed with the rear wheel shaft, or separately formed with the rear wheel shaft and then fixedly connected.

[0138] In some embodiments, the first cross-section within at least part of the axial range of the rear wheel axle 310 can be triangular, rectangular, elliptical or irregular, and the shape of the second cross-section within at least part of the axial range of the limiting hole 11 is adapted to the first cross-section. The non-circular cross-section in the above embodiment is matched to achieve non-rotational movement between the rear wheel axle and the limiting hole, only axial movement, which will not be repeated here.

[0139] Continue to refer to Figure 5 In this embodiment, the rear wheel shaft 310 may include a main shaft 311 and a movable sleeve 312. The main shaft 311 is the main structure of the rear wheel shaft 310, and the rear wheel 320 may be connected to the main shaft 311. The movable sleeve 312 is sleeved outside the main shaft 311, and the movable sleeve 312 may be fixedly connected to the main shaft 311. The movable sleeve 312 cooperates with the rotating shaft 500, and the rotating shaft 500 drives the movable sleeve 312 to move, thereby realizing the axial movement of the entire rear wheel shaft 310 along the rotating shaft 500.

[0140] The end of the main shaft 311 facing the rear wheel 320 can be considered as the first end of the rear wheel shaft 310, and the end of the movable sleeve 312 facing the rear wheel 320 is at a certain distance from the first end of the rear wheel shaft 310, and the end of the movable sleeve 312 facing the rear wheel 320 can be located in the axial middle area of ​​the main shaft 311. For example, the axial length of the movable sleeve 312 is less than the axial length of the main shaft 311 (for example, the axial length of the movable sleeve 312 is half of the axial length of the main shaft 311), the end of the movable sleeve 312 facing away from the rear wheel 320 is substantially flush with the corresponding end of the main shaft 311, and the end of the movable sleeve 312 facing the rear wheel 320 is located in the middle of the main shaft 311.

[0141] With such a configuration, the movable sleeve 312 and the main shaft 311 can be processed separately, which facilitates the processing of the spiral groove 3101 on the outer wall of the movable sleeve 312, simplifies the processing technology of the rear wheel shaft 310, and is conducive to reducing the processing cost of the rear wheel shaft 310. In addition, the main shaft 311 can be a solid structure as a whole, and the structural strength of the main shaft 311 is high, which can ensure the reliability of the entire rear wheel shaft 310. In addition, the movable sleeve 312 can be used to limit the movement range of the rear wheel shaft 310 to prevent the rear wheel shaft 310 from escaping from the rotating shaft 500.

[0142] The diameter of the upper limit hole 111 of the base 100 (for example, the limit hole 111 formed on the limit member 110) can match the outer diameter of the main shaft 311, and the outer diameter of the movable sleeve 312 can be larger than the diameter of the limit hole 111. Thus, the main shaft 311 can move through the limit hole 111, and the movable sleeve 312 can be limited in displacement by the limit hole 111. Figure 6 and Figure 7 As shown in FIG. 1 , when the movable sleeve 312 moves to the point where one end thereof facing the rear wheel 320 stops at the outer periphery of the limiting hole 111 , the rear wheel assembly 300 is in the deployed position. Figure 8 and Fig. 9 As shown, when one end of the movable sleeve 312 facing the rear wheel 320 is away from the limiting hole 111, the wheel abuts against the outer wall of the base 100 or the end of the movable sleeve 312 facing away from the wheel abuts against the limiting portion inside the rotating shaft 500, the rear wheel assembly 300 is in the storage position.

[0143] Since the axial length of the moving sleeve 312 is relatively short, when the spiral groove 3101 is provided on the outer wall of the moving sleeve 312, the spiral groove 3101 can extend to both axial ends of the moving sleeve 312. In this way, the spiral groove 3101 has a sufficient extension length, and the sliding member 510 connected to the rotating shaft 500 slides between both ends of the spiral groove 3101, so that the rear wheel shaft 310 has a sufficiently long moving distance, and the axial moving distance of the rear wheel shaft 310 can reach the axial length of the moving sleeve 312. Therefore, when the push rod 200 is in the folded state, the rear wheel shaft 310 can be retracted into the rotating shaft 500 as much as possible, thereby reducing the storage volume of the golf trolley 10 to the greatest extent.

[0144] Continue to refer to Figure 5The outer wall of the main shaft 311 may be provided with a raised limit strip 3102, and the limit strip 3102 is provided on the part of the main shaft 311 outside the movable sleeve 312. The hole wall of the limit hole 111 may be provided with a limit groove 1111. The limit groove 1111 and the limit strip 3102 both extend along the axial direction of the main shaft 311, and the limit strip 3102 extends into the limit groove 1111. The limit strip 3102 serves as the first anti-rotation portion formed on the outer wall of the rear wheel shaft 310, and the limit groove 1111 serves as the second anti-rotation portion formed on the limit hole 111.

[0145] When the main shaft 311 moves relative to the limiting member 110, the limiting strip 3102 on the main shaft 311 moves along the limiting groove 1111 of the limiting member 110, limiting the main shaft 311 to move along its own axial direction, thereby ensuring the accuracy of the movement trajectory of the main shaft 311. In addition, through the mutual cooperation of the limiting grooves 1111 and the limiting grooves 1111, the main shaft 311 can be positioned when it is installed, thereby ensuring the position accuracy of the rear wheel shaft 310.

[0146] Of course, the limiting groove 1111 can also be set on the outer wall of the main shaft 311, and the raised limiting strip 3102 can be set on the hole wall of the limiting hole 111. This embodiment does not limit this. The following is an example of the limiting groove 1111 being set on the hole wall of the limiting hole 111 and the raised limiting strip 3102 being set on the outer wall of the main shaft 311.

[0147] On this basis, the extension length of the stop bar 3102 protruding from the outer wall of the main shaft 311 can be increased so that the stop bar 3102 extends into the movable sleeve 312. Correspondingly, a positioning groove 3121 can be provided on the inner wall of the movable sleeve 312, the positioning groove 3121 extending from one end of the movable sleeve 312 facing the rear wheel 320 to the other end of the movable sleeve 312, and the stop bar 3102 extends into the positioning groove 3121. When the movable sleeve 312 is sleeved on the outer wall of the main shaft 311, the movable sleeve 312 and the main shaft 311 can be positioned. In this way, the main shaft 311 is positioned by the limiting groove 1111 on the limiting member 110, and the movable sleeve 312 is positioned by the limiting strip 3102 on the main shaft 311, so that the rear wheel axle 310 can be accurately positioned in the rotating shaft 500, ensuring that the sliding member 510 on the rotating shaft 500 can extend into the spiral groove 3101 on the rear wheel axle 310.

[0148] The extension length of the positioning groove 3121 formed on the inner wall of the movable sleeve 312 can be relatively short, and there is a distance between the positioning groove 3121 and the end of the movable sleeve 312 facing away from the rear wheel 320. In this way, the groove area on the inner wall of the movable sleeve 312 is relatively small, and the positioning groove 3121 has relatively little effect on the structural strength of the movable sleeve 312, thereby ensuring the structural strength and reliability of the movable sleeve 312.

[0149] Exemplarily, the positioning groove 3121 on the inner wall of the movable sleeve 312 can be staggered with the spiral groove 3101 on the outer wall of the movable sleeve 312, and the positioning groove 3121 can be located, for example, in the middle of two spiral grooves 3101 arranged adjacent to each other in the circumferential direction. In addition, the positioning groove 3121 extending along the axial direction of the movable sleeve 312 only occupies a small area at the end of the movable sleeve 312, and in the thickness direction of the movable sleeve 312, the positioning groove 3121 and the spiral groove 3101 do not overlap, and the movable sleeve 312 does not have a weak area, thereby ensuring the reliability of the movable sleeve 312.

[0150] In addition, fasteners such as screws, bolts, and rivets may be inserted into the positioning groove 3121 of the movable sleeve 312, and the movable sleeve 312 may be locked to the main shaft 311 through the fasteners. In this way, the portion of the fastener on the outer wall of the movable sleeve 312 may be completely accommodated in the positioning groove 3121. It is prevented that the fastener protrudes from the outer wall of the movable sleeve 312, so as to prevent the fastener from affecting the movement of the movable sleeve 312 in the rotating shaft 500.

[0151] Continue to refer to Figure 5 In some embodiments, the main shaft 311 can also be designed in a split manner, and the main shaft 311 can include a mandrel 3111 and a guide sleeve 3112. The mandrel 3111 is the central support shaft of the rear wheel shaft 310, and the rear wheel 320 can be connected to the mandrel 3111. The guide sleeve 3112 is sleeved outside the mandrel 3111, and the limit strip 3102 protrudes on the outer wall of the guide sleeve 3112. In this way, the processing technology of the main shaft 311 is simpler, and the mandrel 3111 and the guide sleeve 3112 can be processed separately, and then the guide sleeve 3112 is fixedly connected to the outside of the mandrel 3111. For example, the mandrel 3111 can be a solid cylinder, and the structure of the mandrel 3111 is simple and the structural strength is guaranteed. It is also easier to process the limit strip 3102 on the outer wall of the guide sleeve 3112.

[0152] In addition, refer to Figure 7 or Fig. 9 As shown, by separately setting the mandrel 3111 and the guide sleeve 3112, the assembly method of the rear wheel assembly 300 is also more flexible. The guide sleeve 3112 can be firstly set on the mandrel 3111 to form the main shaft 311, and then the main shaft 311 is completely passed through the stopper 110 and assembled into the steering shaft. Alternatively, the guide sleeve 3112 can be firstly passed through the stopper 110 and assembled into the steering shaft, and then the mandrel 3111 is assembled into the guide sleeve 3112 to form the main shaft 311.

[0153] Reference Figure 4 or Figure 5As shown, in this embodiment, the front wheel assembly 400 can also be connected to the rotating shaft 500. During the rotation process, the rotating shaft 500 can drive the front wheel assembly 400 to move, so as to realize the storage and extension of the front wheel assembly 400.

[0154] Specifically, the front wheel assembly 400 may include a connecting rod 410 and a front wheel 420, one end of the connecting rod 410 is connected to the rotating shaft 500, and the front wheel 420 is connected to the other end of the connecting rod 410. With the rotation of the rotating shaft 500, the connecting rod 410 may perform a rotational motion to drive the front wheel 420 to move toward or away from the rotating shaft 500, thereby realizing the extension and retraction of the front wheel assembly 400. For example, the connecting rod 410 may extend along the walking direction of the golf trolley 10 (e.g., the length direction of the base 100), the rotating shaft 500 may drive the connecting rod 410 to extend and retract along its extension direction, and the connecting rod 410 drives the front wheel 420 to move forward and backward, thereby realizing the storage and extension of the front wheel assembly 400.

[0155] When the push rod 200 swings away from the base 100 to the unfolded state, the push rod 200 drives the rotating shaft 500 to rotate, and the connecting rod 410 extends in the direction away from the rotating shaft 500 until the connecting rod 410 is fully unfolded into a straight line and drives the front wheel 420 to move to the position farthest from the front end of the base 100, and the front wheel assembly 400 moves to the unfolded position (see Figure 1 On the contrary, when the push rod 200 swings toward the direction close to the base 100 to the folded state, the push rod 200 drives the rotating shaft 500 to rotate, and the connecting rod 410 contracts toward the direction close to the rotating shaft 500 until the connecting rod 410 contracts to the maximum extent and drives the front wheel 420 to move to the position closest to the front end of the base 100, and the front wheel assembly 400 moves to the storage position (see Figure 2 as shown).

[0156] In this configuration, the push rod 200 rotates to drive the rotating shaft 500 to rotate, and further, the rotating shaft 500 rotates to drive the front wheel assembly 400 to move along the front-back direction of the base 100, thereby realizing the storage and extension of the front wheel assembly 400. When the golf trolley 10 is in the folded state, not only the push rod 200 is folded on the base 100, but the front wheel assembly 400 is also retracted inward. The front-to-back dimensions of the golf trolley 10 are reduced, and the folded volume of the entire vehicle is reduced, making it easier to store and carry the golf trolley 10.

[0157] In addition, as mentioned above, when the rotating shaft 500 drives the rear wheel assembly 300 and the front wheel assembly 400 to move at the same time, when the golf trolley 10 is in the folded state, the rear wheel assembly 300 and the front wheel assembly 400 are both retracted inward to the storage state. Therefore, the left-right size and the front-back size of the golf trolley 10 are reduced, the size of the golf trolley 10 in the plane direction is greatly reduced, the folded volume of the whole vehicle is greatly reduced, and the portability of the golf trolley 10 is improved.

[0158] Continue to refer to Figure 4 or Figure 5 The connecting rod 410 connected between the rotating shaft 500 and the front wheel 420 may include a first rod 411 and a second rod 412, one end of the first rod 411 is rotatably connected to the rotating shaft 500, the other end of the first rod 411 is rotatably connected to one end of the second rod 412, and the other end of the second rod 412 is connected to the front wheel 420. In this way, when the rotating shaft 500 drives the first rod 411 to rotate, the first rod 411 can also rotate relative to the rotating shaft 500, and the second rod 412 and the first rod 411 can also rotate relatively, so that the rotating shaft 500 drives the connecting rod 410 to extend and retract.

[0159] When the push rod 200 is in the unfolded state farthest from the base 100, the rotation shaft 500 drives the connecting rod 410 to rotate until the first rod 411 and the second rod 412 are located in a straight line (see Figure 1 At this time, the connecting rod 410 drives the front wheel 420 to move to the position farthest from the front end of the base 100, and the front wheel assembly 400 is in the unfolded state. When the push rod 200 is in the folded state closest to the base 100, the rotating shaft 500 drives the connecting rod 410 to rotate until the angle between the first rod 411 and the second rod 412 reaches the minimum (see Figure 2 At this time, the connecting rod 410 drives the front wheel 420 to move to the position closest to the front end of the base 100, and the front wheel assembly 400 is in the storage state.

[0160] On this basis, the base 100 may also be provided with a guide seat 130, which is, for example, fixed on the inner wall of the base 100. The second rod 412 in the connecting rod 410 may pass through the guide seat 130, so that the second rod 412 is limited to extend in the horizontal direction through the guide seat 130, and the second rod 412 is, for example, parallel to the inner bottom wall of the base 100. In addition, the guide seat 130 also defines the moving direction of the second rod 412, so that the second rod 412 moves along its own axial straight line, so that the second rod 412 moves in the horizontal direction. In this way, the second rod 412 can drive the front wheel 420 to move in the horizontal direction, so that the traction force of the connecting rod 410 on the front wheel 420 remains in the horizontal direction. It is ensured that the front wheel assembly 400 can be smoothly extended and contracted, and the front wheel assembly 400 is prevented from interfering with the ground or the base 100.

[0161] For example, the connecting rod 410 can be connected to the central position of the rotating shaft 500 in the axial direction. In this way, the forces between the front wheel assembly 400 and the rotating shaft 500 are balanced, and the rotating shaft 500 drives the front wheel assembly 400 to extend and retract stably and reliably. In addition, the golf trolley 10 has good structural symmetry and can travel stably.

[0162] When the support member 120 is located at the center area of ​​the rotating shaft 500, the support member 120 may be provided with a first groove 121 (see Figure 4 As shown in FIG. 1 , the first slot 121 extends, for example, along the circumferential direction of the rotating shaft 500 . The first slot 121 corresponds to the connecting rod 410 , and the first rod 411 in the connecting rod 410 passes through the first slot 121 and extends toward the front end of the base 100 .

[0163] In addition, the rotating shaft 500 may be provided with a second groove 520 (see Figure 5 As shown in FIG. 5 ), the second groove 520 extends, for example, along the circumference of the rotating shaft 500. The second groove 520 also corresponds to the connecting rod 410, so as to reserve sufficient swing space for the first rod 411 in the connecting rod 410 to avoid interference between the rotating shaft 500 and the first rod 411. When the first rod 411 has a large swing amplitude, the first rod 411 can partially pass through the second groove 520 and extend into the rotating shaft 500, so as to achieve the avoidance of the rotating shaft 500 to the first rod 411.

[0164] In this embodiment, in addition to being able to rotate relative to the base 100, the push rod 200 can also be extended and retracted along its own length direction, thereby having an extended state and a shortened state. When the push rod 200 is in the extended state farthest from the base 100, the push rod 200 can be in the extended state (see Figure 1 At this time, the length of the push rod 200 reaches the maximum, and the height of the push rod 200 is suitable for the user to hold and push the golf trolley 10. When the push rod 200 is in the folded state closest to the base 100, the push rod 200 can be in a shortened state (see Figure 2 At this time, the length of the push rod 200 is minimized, and the plane space occupied by the push rod 200 itself is minimized. For example, the push rod 200 can be completely located in the plane space of the base 100. In this way, the folded volume of the golf trolley 10 can be minimized, and the portability of the golf trolley 10 is improved.

[0165] Fig.10 for Figure 1 A schematic diagram of the structure of a putter of a foldable golf trolley. Fig.11 for Fig.10 Exploded view of the actuator shown in .

[0166] Reference Fig.10 and Fig.11As shown, as an embodiment, the push rod 200 may include a lower rod 210 and an upper rod 220. The bottom end of the lower rod 210 may be movably connected to the base 100, the bottom end of the upper rod 220 penetrates into the lower rod 210 from the top end of the lower rod 210, and the upper rod 220 may move along the lower rod 210. By moving the upper rod 220 along the lower rod 210, the push rod 200 is extended and retracted, and the push rod 200 can be switched between an extended state and a shortened state.

[0167] When the upper rod 220 moves to the extreme position in the direction away from the lower rod 210, the portion of the upper rod 220 extending above the lower rod 210 reaches the maximum, and the portion of the upper rod 220 located inside the lower rod 210 reaches the minimum. At this time, the push rod 200 is in an extended state. When the upper rod 220 moves to the extreme position in the direction close to the lower rod 210, the portion of the upper rod 220 located inside the lower rod 210 reaches the maximum, and the portion of the upper rod 220 exposed above the lower rod 210 reaches the minimum. At this time, the push rod 200 is in a shortened state.

[0168] The push rod 200 may also be provided with a gripping portion 221, which is, for example, located at the top of the upper rod 220 and extends to the left and right sides of the upper rod 220. The gripping portion 221 is used for the user to hold, so that the user can apply force to the push rod 200, thereby pushing the golf trolley 10 to move.

[0169] Continue to refer to Fig.10 and Fig.11 The lower rod 210 may be provided with a telescopic switch 211, which is used to control the telescopic state of the push rod 200. When the telescopic switch 211 is in a locked state, the telescopic switch 211 may lock the upper rod 220 to lock the push rod 200 in an extended state. When the telescopic switch 211 is in an open state, the telescopic switch 211 may release the upper rod 220, so that the upper rod 220 can move along the lower rod 210, and the push rod 200 can be switched to a shortened state.

[0170] With such a configuration, when the push rod 200 is in an unfolded state away from the base 100, the push rod 200 can be locked in an extended state by placing the telescopic switch 211 in a locked state. At this time, the push rod 200 is maintained at a maximum length, which is convenient for the user to hold. When the push rod 200 is in a folded state close to the base 100, the push rod 200 can be switched to a shortened state by placing the telescopic switch 211 in an open state. At this time, the length of the push rod 200 is minimized, so as to minimize the folded volume of the golf trolley 10.

[0171] Exemplarily, the telescopic switch 211 is, for example, a push switch disposed on the outer wall of the lower rod 210. When the push switch is not subjected to force, the push switch is pressed against the lower rod 210, and the locking protrusion of the push switch extends into the lower rod 210. At this time, the locking protrusion of the push switch is locked in the telescopic locking hole 222 (such as the locking hole 222) opened near the bottom end of the upper rod 220. Fig.11 220), or when the upper rod 220 is not provided with the telescopic locking hole 222, the locking protrusion of the push switch can also be locked at the bottom end of the upper rod 220 to lock the push rod 200 in the extended state. When the user presses the push switch, the locking protrusion of the push switch is released from the upper rod 220, and the upper rod 220 is released and can move along the lower rod 210, so that the push rod 200 switches to the shortened state. When the upper rod 220 is pulled upward, the push switch can restore the state of locking the upper rod 220 under the action of its own elastic force.

[0172] In addition, a rotary switch 140 (see Figure 3 ), the rotation switch 140 is used to control the rotation state of the push rod 200. The position of the rotation switch 140 can be set according to the position of the push rod 200 when it is in the unfolded state away from the base 100. When the push rod 200 is in the unfolded state, it can cooperate with the rotation switch 140 to lock or release the push rod 200 through the rotation switch 140.

[0173] When the rotary switch 140 is in a locked state, the push rod 200 can be locked in the posture when it is in the unfolded state. At this time, the push rod 200 can be kept in the unfolded posture, so that the user can hold the push rod 200 to push the golf trolley 10. When the rotary switch 140 is in a triggered state, the rotary switch 140 can release the push rod 200. At this time, the push rod 200 can be rotated from the unfolded state to the folded state to achieve storage of the golf trolley 10.

[0174] The rotary switch 140 can be triggered by the push rod 200. In other words, the rotary switch 140 is switched to the triggered state by the push rod 200. When the push rod 200 switches from the extended state to the shortened state, the upper rod 220 moves to the limit position inside the lower rod 210, and the bottom end of the upper rod 220 is close to the bottom end of the lower rod 210. At this time, the bottom end of the upper rod 220 triggers the rotary switch 140, so that the rotary switch 140 switches from the locked state to the triggered state, and then the push rod 200 can be folded onto the base 100 in the shortened state.

[0175] Exemplarily, the rotation switch 140 is, for example, an elastic locking rod disposed on the left and right sides of the push rod 200. When the push rod 200 is in the extended state, the elastic locking rod extends into the lower rod 210 under the action of its own elastic force. For example, the elastic locking rod penetrates the rotation locking hole 212 (see FIG. 2 ) provided on the side wall of the lower rod 210. Fig.10 or Fig.11 200 is locked in the unfolded state. When the push rod 200 switches from the extended state to the shortened state, the upper rod 220 pushes the elastic locking rod to move away from the push rod 200, and the elastic locking rod escapes from the lower rod 210, for example, the elastic locking rod exits the rotation locking hole 212 opened on the side wall of the lower rod 210, and the push rod 200 is released and can be rotated to the folded state. When the push rod 200 is rotated to the unfolded state again and the push rod 200 switches from the shortened state to the extended state, the upper rod 220 releases the elastic locking rod, and the elastic locking rod can restore the state of locking the lower rod 210 under the action of its own elastic force.

[0176] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0177] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0178] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable golf trolley, characterized in that: include: Pedestal; A rotating shaft, rotatably connected to the base; A push rod, the push rod is transmission-connected to the rotating shaft, and the push rod drives the rotating shaft to rotate; A rear wheel assembly is movably connected to both ends of the rotating shaft; the rear wheel assembly comprises a rear wheel shaft and a rear wheel, one end of the rear wheel shaft is sleeved with the rotating shaft, the rear wheel is connected to the other end of the rear wheel shaft, and the rear wheel shaft is extended and retracted along the axial direction of the rotating shaft as the rotating shaft rotates; Among them, one of the rotating shaft and the rear wheel shaft is provided with a sliding member, and the other is provided with a spiral groove, and the spiral groove extends spirally along the rear wheel shaft or the rotating shaft; when the rotating shaft rotates, the sliding member slides along the spiral groove, causing the rear wheel shaft to move axially along the rotating shaft.

2. The foldable golf trolley according to claim 1, characterized in that: A plurality of the spiral grooves are arranged at intervals along the circumferential direction of the rear wheel shaft or the rotating shaft.

3. The foldable golf trolley according to claim 2, characterized in that: The rear wheel shaft is inserted into the rotating shaft, the sliding member is arranged on the rotating shaft, and the spiral groove is arranged on the outer wall of the rear wheel shaft.

4. The foldable golf trolley according to any one of claims 1 to 3, characterized in that The rear wheel axle is provided with a first anti-rotation portion, the base is provided with a limiting hole, and the limiting hole is provided with a second anti-rotation portion; the second anti-rotation portion is provided corresponding to the first anti-rotation portion and matches with each other to hinder the rotational movement of the rear wheel axle.

5. The foldable golf trolley according to claim 4, characterized in that: The first cross-section of the rear wheel axle within at least part of its axial length is non-circular to form the first anti-rotation portion; the second cross-section of the limiting hole within at least part of its axial length is non-circular to form the second anti-rotation portion; the first cross-section matches the second cross-section.

6. The foldable golf trolley according to claim 5, characterized in that: The limiting hole is formed by the base itself, or the base is connected to a limiting member, and the limiting member is provided with the limiting hole.

7. The foldable golf trolley according to claim 5, characterized in that: The first anti-rotation part is a stopper strip protruding from the outer wall of the rear wheel shaft, and the second anti-rotation part is a stopper groove provided on the hole wall of the stopper hole; Wherein, the limiting strip extends into the limiting groove, and the limiting strip extends along the axial direction of the rear wheel axle.

8. The foldable golf trolley according to claim 4, characterized in that: The rear wheel shaft comprises a main shaft and a movable sleeve, the rear wheel is connected to the main shaft, and the movable sleeve is sleeved outside the main shaft; Wherein, the movable sleeve moves along the inner wall of the rotating shaft, and the movable sleeve drives the main shaft to move along the axial direction of the rotating shaft.

9. The foldable golf trolley according to claim 8, characterized in that: One end of the movable sleeve facing the rear wheel is stopped at the outer periphery of the limiting hole, the main shaft passes through the limiting hole and extends out of the base, and the first anti-rotation part is a limiting strip protruding from the outer wall of the main shaft.

10. The foldable golf trolley according to claim 9, characterized in that: The inner wall of the movable sleeve is provided with a positioning groove, and the positioning groove extends from one end of the movable sleeve toward the rear wheel to the other end of the movable sleeve, and the limiting strip on the outer wall of the main shaft extends into the positioning groove.

11. The foldable golf trolley according to claim 10, characterized in that: The positioning groove does not pass through both axial ends of the movable sleeve, and / or a fastener is inserted into the positioning groove, and the fastener fixes the movable sleeve to the main shaft.

12. The foldable golf trolley according to claim 8, characterized in that: The main shaft comprises a core shaft and a guide sleeve, the rear wheel is connected to the core shaft, and the guide sleeve is sleeved on the core shaft.

13. The foldable golf trolley according to any one of claims 1 to 3, characterized in that: Also includes: A front wheel assembly, comprising a connecting rod and a front wheel, wherein one end of the connecting rod is connected to the rotating shaft, and the front wheel is connected to the other end of the connecting rod; The connecting rod moves with the rotation of the rotating shaft to drive the front wheel to move toward or away from the rotating shaft; Wherein, the connecting rod includes a first rod and a second rod, one end of the first rod is rotatably connected to the rotating shaft, the other end of the first rod is rotatably connected to one end of the second rod, and the other end of the second rod is connected to the front wheel; the base is provided with a guide seat, and the second rod passes through the guide seat so that the second rod moves in a straight line along the axial direction of the second rod.

14. The foldable golf trolley according to any one of claims 1 to 3, characterized in that: Also includes: A gear set, transmission-connected between the bottom end of the push rod and the rotating shaft; Wherein, the gear set includes two pairs of gear pairs, each pair of the gear pairs includes a driving wheel and a driven wheel meshing with each other, the driving wheel is connected to the bottom end of the push rod, the driven wheel is sleeved on the outer wall of the rotating shaft, and a connecting shaft is connected between the two driving wheels of the two pairs of the gear pairs; When the push rod swings toward the direction approaching the base, the driven wheel drives the rotating shaft to rotate along the first direction.

15. The foldable golf trolley according to claim 14, characterized in that: The base is provided with a support member, and the rotating shaft and the connecting shaft are both penetrated by the support member.

16. The foldable golf trolley according to claim 14, characterized in that: The driven wheel is connected to the rotating shaft via a fastener; When the sliding member is arranged on the rotating shaft, the fastening member is the sliding member, and the fastening member passes through the rotating shaft and extends into the spiral groove of the rear wheel shaft.

17. The foldable golf trolley according to any one of claims 1 to 3, characterized in that: The bottom end of the push rod is connected to the rotating shaft; When the push rod swings toward the direction approaching the base, the push rod drives the rotating shaft to rotate along a second direction, and the second direction is opposite to the first direction.

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