A folding golf trolley

Abstract

The utility model discloses a folding golf handcart, including handle group, upper car frame, front wheel group, lower car frame and two rear wheel groups, be provided with sliding mechanism on lower car frame, and the both sides of sliding mechanism are provided with two multi-connecting rod movement mechanism, and the multi-connecting rod movement mechanism is formed to first connecting rod, second connecting rod, third connecting rod and fourth connecting rod, and the both ends of first connecting rod are connected with sliding mechanism and upper car frame respectively, and the both ends of second connecting rod and third connecting rod are connected with sliding mechanism and one rear wheel group on the same side respectively, and the both ends of fourth connecting rod are connected with second connecting rod and the rear end of lower car frame or are connected with third connecting rod and the rear end of lower car frame respectively, and the advantage is that in the folding upper car frame process, only need to fold two rear wheel groups simultaneously, do not need to reserve the folding space of front wheel group, can make two rear wheel groups as close as possible, reduce the width along two rear wheel groups direction after folding, make the floor space smaller when storage.

Description

Technical Field

[0001] This utility model relates to golf carts, and more particularly to a folding golf cart. Background Technology

[0002] Golf carts are an important piece of equipment in golf. To make them easy to carry and store, golf carts are usually designed to be foldable. They are folded up for storage and unfolded when in use.

[0003] Chinese utility model patent CN202221218099.9 discloses a golf cart, which is also a folding golf cart. A linkage mechanism is provided between its upper frame, lower frame, front wheel assembly, and two rear wheel assemblies. A first linkage is installed between the handlebar assembly and the lower frame. One end of the first linkage is mounted on the handlebar assembly and can rotate relative to it under force; the other end is mounted on the lower frame and can also rotate relative to it under force. When the upper frame folds towards the lower frame, the first linkage drives the handlebar assembly to fold synchronously towards the upper frame. Thus, in... When folding the golf cart, the upper frame folds towards the lower frame. At this time, the first linkage drives the handlebar assembly to fold towards the upper frame. Simultaneously, the linkage mechanism drives the front wheel assembly and the two rear wheel assemblies to fold synchronously, completing the synchronous folding of the handlebar assembly, upper frame, lower frame, front wheel assembly, and two rear wheel assemblies. When unfolding the golf cart, the upper frame moves away from the lower frame. At this time, the first linkage drives the handlebar assembly to unfold away from the upper frame. Simultaneously, the linkage mechanism drives the front wheel assembly and the two rear wheel assemblies to unfold synchronously, completing the synchronous unfolding of the handlebar assembly, upper frame, lower frame, front wheel assembly, and two rear wheel assemblies.

[0004] The aforementioned golf cart has a compact structure when folded. However, because its front wheelset needs to fold between the two rear wheelsets, sufficient space must be left between the two rear wheelsets after folding to accommodate the front wheelset. Therefore, although its length along the front-to-back direction is relatively small, its width along the two rear wheelsets after folding is still quite wide. When storing a golf cart after folding, it is usually placed vertically on the ground, with its length along the vertical direction and its width along the horizontal or front-to-back direction. Due to its width, it still occupies a relatively large area. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a folding golf cart that occupies a small area when stored.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a folding golf cart, including a handlebar assembly, an upper frame, a front wheel assembly, a lower frame, and two rear wheel assemblies. The upper frame is mounted on the lower frame and can rotate relative to the lower frame under force. The front wheel assembly is mounted on the front end of the lower frame, and the two rear wheel assemblies are respectively mounted on the left and right sides of the rear of the lower frame. The handlebar assembly is foldable and mounted on the upper end of the upper frame. The lower frame is provided with a sliding mechanism that can move back and forth under force. Two multi-link motion mechanisms are arranged opposite each other on the left and right sides of the sliding mechanism. Each multi-link motion mechanism includes a first link, a second link, a third link, and a fourth link. The two ends of a first link are respectively connected to the sliding mechanism and the upper frame, and can rotate relative to the sliding mechanism and the upper frame when subjected to force. The second link and the third link are spaced apart front and rear. The two ends of the second link and the third link are respectively connected to the sliding mechanism and a rear wheel assembly located on the same side therewith, and can rotate relative to the sliding mechanism and the rear wheel assembly located on the same side therewith when subjected to force. The two ends of a fourth link are respectively connected to the rear end of the second link and the lower frame, and can rotate relative to the second link and the lower frame when subjected to force, or are respectively connected to the rear end of the third link and the lower frame, and can rotate relative to the third link and the lower frame when subjected to force.

[0007] Compared with the prior art, the advantages of this utility model are that it uses a multi-link motion mechanism consisting of a first link, a second link, a third link, and a fourth link. The two ends of the first link are connected to the sliding mechanism and the upper frame, respectively, and can rotate relative to the sliding mechanism and the upper frame when subjected to force. The second and third links are spaced apart, and their ends are connected to the sliding mechanism and a rear wheel assembly on the same side, respectively, and can rotate relative to the sliding mechanism and the rear wheel assembly on the same side when subjected to force. The two ends of the fourth link are connected to the rear ends of the second link and the lower frame, or to the rear ends of the third link and the lower frame, respectively, and can rotate relative to the second link and the lower frame, or relative to the third link and the lower frame when subjected to force. When the folding golf cart is in the unfolded state, the sliding mechanism is located at the rear. When the upper frame needs to be folded... When the upper frame is pushed forward from the back, it rotates and folds forward relative to the lower frame. During this process, the first link of the two multi-link motion mechanisms rotates forward with the upper frame. The sliding mechanism is subjected to the forward force from the first link of the two multi-link motion mechanisms and begins to slide forward along the lower frame, driving the second, third, and fourth links of the two multi-link motion mechanisms to rotate synchronously. This causes the two rear wheel sets to move parallel to the lower frame and move closer together. When the upper frame is folded into place, the two rear wheel sets are also folded into place. During the folding of the upper frame, only the two rear wheel sets need to be folded synchronously. There is no need to reserve folding space for the front wheel sets. Therefore, the two multi-link motion mechanisms can bring the two rear wheel sets closer together as much as possible, thereby minimizing the width along the direction of the two rear wheel sets after folding and reducing the footprint when stored.

[0008] Furthermore, the upper part of the upper frame is provided with a folding lock, and the front part of the lower frame is provided with a folding hook. The folding hook is used to hook the folding lock when the upper frame and the lower frame are folded, so that the upper frame and the lower frame do not become loose.

[0009] Furthermore, the handlebar assembly is mounted on the upper end of the upper frame via a first locking mechanism. The first locking mechanism is used to lock the handlebar assembly and the upper frame when they are unfolded and to release them when they are folded, so that the handlebar assembly can rotate relative to the upper frame for folding.

[0010] Furthermore, a second locking mechanism is provided between the upper frame and the lower frame for locking both in the unfolded state. An elastic connecting device is provided inside the upper frame, which is connected to the first locking mechanism and the second locking mechanism respectively. The elastic connecting device is used to release the lock of the second locking mechanism when the first locking mechanism is unlocked and the handlebar assembly is folded.

[0011] Furthermore, the first locking mechanism includes a joint assembly, an upper bearing, a first driven shaft connected to the elastic connecting device, and a joint locking member for locking the joint assembly and the upper bearing. The joint assembly is fixedly connected to the handle assembly and is rotatably mounted on the upper bearing. A guide groove is provided on the inner side of the joint assembly, and the surface of the guide groove is uneven. A first guide hole extending vertically is provided on the upper bearing. The first driven shaft is located in the guide groove and the first guide hole. After the joint locking member is unlocked, when the handle assembly drives the joint assembly to rotate, the first driven shaft can move synchronously in the guide groove and the first guide hole.

[0012] Furthermore, the elastic connection device includes an upper slider, a lower slider, a steel wire rope, an elastic element, and a second driven shaft connected to the second locking mechanism. The upper slider is disposed at the upper end of the upper frame, and a cavity is provided in the upper bearing seat. The upper end of the upper frame is located in the cavity. A first through hole is provided on the upper slider, and the first driven shaft is located in the first through hole. When the handlebar assembly is rotated to drive the joint assembly to rotate, the first driven shaft can move synchronously in the guide groove and the first guide hole. The lower slider is disposed at the lower end of the upper frame, and the steel wire rope is located in the upper frame. The upper end of the steel wire rope is fixedly connected to the upper slider, and the lower end of the steel wire rope is fixedly connected to the lower slider. The lower end of the elastic element is connected to the lower slider, and the upper end of the elastic element is connected to the upper frame. A second through hole is provided on the lower slider. Two vertically extending second guide holes are provided on the lower side wall of the upper frame, and the second driven shaft is located in the two second guide holes and the second through hole.

[0013] Furthermore, the second locking mechanism includes a lower fixed seat, a connecting assembly, and a rotating shaft fixed on the lower frame. The connecting assembly is connected to the sliding mechanism and the upper frame respectively. The lower fixed seat is provided with a groove and a slot. The lower end of the upper frame is located in the groove and is mounted on the lower fixed seat through the rotating shaft. When the second locking mechanism is in the locked state, the second driven shaft is located in the slot and is fixed. Attached Figure Description

[0014] Figure 1 The three-dimensional folding golf cart of this utility model Figure 1 ;

[0015] Figure 2 The three-dimensional folding golf cart of this utility model Figure 2 ;

[0016] Figure 3 The three-dimensional folding golf cart of this utility model Figure 3 ;

[0017] Figure 4 The three-dimensional folding golf cart of this utility model Figure 4 ;

[0018] Figure 5 This is a partial cross-sectional view and a partial enlarged view of the folding golf cart of this utility model;

[0019] Figure 6 This diagram illustrates the folding process of the folding golf cart of this invention. Figure 1 ;

[0020] Figure 7 This diagram illustrates the folding process of the folding golf cart of this invention. Figure 2 ;

[0021] Figure 8 This diagram illustrates the folding process of the folding golf cart of this invention. Figure 3 ;

[0022] Figure 9 This diagram illustrates the folding process of the folding golf cart of this invention. Figure 4 . Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Example 1: As Figures 1 to 5As shown, a folding golf cart includes a lower frame 1, an upper frame 2, a handlebar assembly 3, a front wheel assembly 4, and two rear wheel assemblies 9. The upper frame 2 is mounted on the lower frame 1 and can rotate relative to the lower frame 1 under force. The front wheel assembly 4 is mounted on the front end of the lower frame 1. The two rear wheel assemblies 9 are respectively mounted on the left and right sides of the rear of the lower frame 1. The handlebar assembly 3 is foldable and mounted on the upper end of the upper frame 2. The lower frame 1 is provided with a sliding mechanism 14 that can move back and forth under force. Two multi-link motion mechanisms are arranged opposite each other on the left and right sides of the sliding mechanism 14. Each multi-link motion mechanism includes a first link 5, a second link 6, a third link 7, and a fourth link 8. The first link 5... The two ends of the first link are connected to the sliding mechanism 14 and the upper frame 2 respectively, and can rotate relative to the sliding mechanism 14 and the upper frame 2 when subjected to force. The second link 6 and the third link 7 are arranged at intervals. The two ends of the second link 6 and the third link 7 are connected to the sliding mechanism 14 and a rear wheel assembly 9 located on the same side, respectively, and can rotate relative to the sliding mechanism 14 and the rear wheel assembly 9 located on the same side when subjected to force. The two ends of the fourth link 8 are connected to the rear end of the second link 6 and the lower frame 1 respectively, and can rotate relative to the second link 6 and the lower frame 1 when subjected to force, or connected to the rear end of the third link 7 and the lower frame 1 respectively, and can rotate relative to the third link 7 and the lower frame 1 when subjected to force.

[0025] In this embodiment, when the folding golf cart is in the unfolded state, the sliding mechanism 14 is located at its rear. When the upper frame 2 needs to be folded, the upper frame 2 is pushed forward from the rear, causing the upper frame 2 to rotate and fold forward relative to the lower frame 1. During this process, the first link 5 of the two multi-link motion mechanisms rotates forward with the upper frame 2. The sliding mechanism 14 is subjected to a forward force from the first link 5 of the two multi-link motion mechanisms and begins to slide forward along the lower frame 1, causing the second link 6, the third link 7, and the fourth link 8 of the two multi-link motion mechanisms to rotate synchronously, thereby causing the two rear wheel sets 9 to move parallel to the lower part of the lower frame 1 and move closer together. When the upper frame 2 is folded in place, the two rear wheel sets 9 are also folded in place. During the folding of the upper frame 2, only the two rear wheel sets 9 need to be folded synchronously, and there is no need to reserve folding space for the front wheel set 4. Therefore, the two multi-link motion mechanisms can bring the two rear wheel sets 9 closer together as much as possible, thereby minimizing the width along the direction of the two rear wheel sets 9 after folding, so that the footprint is smaller when stored.

[0026] Example 2: This example is basically the same as Example 1, except that: In this example, the upper frame 2 is provided with a folding lock 12, and the lower frame 1 is provided with a folding hook 17 at the front. The folding hook 17 is used to hook the folding lock 12 when the upper frame 2 and the lower frame 1 are folded, so that the upper frame 2 and the lower frame 1 do not come loose.

[0027] In this embodiment, the cooperation between the retraction lock 12 and the folding hook 17 further strengthens the tightness of the upper frame 2 and the lower frame 1 after folding, prevents the upper frame 2 and the lower frame 1 from loosening, and improves the reliability of folding.

[0028] Example 3: This example is basically the same as Example 1, except that: In this example, the handlebar assembly 3 is installed on the upper end of the upper frame 2 through the first locking mechanism 13. The first locking mechanism 13 is used to lock the handlebar assembly 3 and the upper frame 2 when they are unfolded and to release the lock when they are folded, so that the handlebar assembly 3 can rotate relative to the upper frame 2 for folding.

[0029] In this embodiment, a second locking mechanism 16 is provided between the upper frame 2 and the lower frame 1 to lock both in the unfolded state. An elastic connecting device is provided inside the upper frame 2. The elastic connecting device is connected to the first locking mechanism 13 and the second locking mechanism 16 respectively. The elastic connecting device is used to release the lock of the second locking mechanism 16 when the first locking mechanism 13 is released and the handlebar assembly 3 is folded.

[0030] In this embodiment, the first locking mechanism 13 includes a joint assembly 31, an upper support 19, a first driven shaft 21 connected to an elastic connecting device, and a joint locking member 32 for locking the joint assembly 31 and the upper support 19. The joint assembly 31 is fixedly connected to the handle assembly 3 and is rotatably mounted on the upper support 19. A guide groove 33 is provided on the inner side of the joint assembly 31. The surface of the guide groove 33 is uneven. A first guide hole 34 extending vertically is provided on the upper support 19. The first driven shaft 21 is located in the guide groove 33 and the first guide hole 34. After the joint locking member 32 is unlocked, when the handle assembly 3 drives the joint assembly 31 to rotate, the first driven shaft 21 can move synchronously in the guide groove 33 and the first guide hole 34.

[0031] In this embodiment, the elastic connection device includes an upper slider 22, a lower slider 26, a wire rope 24, an elastic element 25, and a second driven shaft 27 connected to the second locking mechanism 16. The upper slider 22 is disposed at the upper end of the upper frame 2, and a cavity is provided in the upper bearing 19. The upper end of the upper frame 2 is located in the cavity. A first through hole 35 is provided on the upper slider 22, and the first driven shaft 21 is located in the first through hole 35. When the handle assembly 3 is rotated to drive the joint assembly 31 to rotate, the first driven shaft 21 can move within the guide groove 33 and the first guide hole 34. Synchronous movement; the lower slider 26 is located at the lower end of the upper frame 2, the wire rope 24 is located inside the upper frame 2, the upper end of the wire rope 24 is fixedly connected to the upper slider 22, the lower end of the wire rope 24 is fixedly connected to the lower slider 26, the lower end of the elastic element 25 is connected to the lower slider 26, the upper end of the elastic element 25 is connected to the upper frame 2, the lower slider 26 is provided with a second through hole 37, the lower end side wall of the upper frame 2 is provided with two vertically extending second guide holes 36, and the second driven shaft 27 is located in the two second guide holes 36 and the second through hole 37.

[0032] In this embodiment, the second locking mechanism 16 includes a lower fixed seat 30, a connecting component 38, and a rotating shaft 39 fixed on the lower frame 1. The connecting component 38 is connected to the sliding mechanism 14 and the upper frame 2 respectively. The lower fixed seat 30 is provided with a groove and a slot 40. The lower end of the upper frame 2 is located in the groove and is mounted on the lower fixed seat 30 through the rotating shaft 39. When the second locking mechanism 16 is in the locked state, the second driven shaft 27 is located in the slot 40 and is fixed.

[0033] In this embodiment, when the joint locking member 32 releases the lock between the joint assembly 31 and the upper bearing seat 19, and the handlebar assembly is pushed and folded towards the upper frame 2, the joint assembly 31 rotates relative to the upper bearing seat 19. The first driven shaft 21 moves synchronously within the guide groove 33 and the first guide hole 34, and drives the upper slider 22 to move through the first through hole 35. The upper slider 22 drives the lower slider 26 to move through the wire rope 24. The lower slider 26 drives the second driven shaft 27 to move along the second guide hole 36 through the second through hole 37. As the upper frame 2 leaves the slot 40, the second locking mechanism 16 releases the lock between the upper frame 2 and the lower frame 1. At this time, the upper frame 2 can rotate relative to the lower fixed seat 30 with the pivot 39 as the axis, realizing the folding with the lower frame 1. At the same time, during the folding process of the upper frame 2, the two rear wheel sets 9 are folded through two multi-link motion mechanisms. Thus, during the folding process of the handlebar set, the upper frame 2 can be pushed synchronously to realize the synchronous folding of the handlebar set with the upper frame 2, the upper frame 2 with the lower frame 1, and the two rear wheel sets 9.

[0034] This invention uses a multi-link motion mechanism consisting of a first link 5, a second link 6, a third link 7, and a fourth link 8. Through specific connections between the multi-link motion mechanism, the upper frame 2, the lower frame 1, the sliding mechanism 14, and the two rear wheel sets 9, the two rear wheel sets 9 can move parallel to each other and move closer to the lower frame 1. When the upper frame 2 is folded into place, the two rear wheel sets 9 are also folded into place. During the folding of the upper frame 2, only the two rear wheel sets 9 need to be folded simultaneously, without reserving folding space for the front wheel set 4. Therefore, the two multi-link motion mechanisms can bring the two rear wheel sets 9 closer together as much as possible, thereby minimizing the width along the direction of the two rear wheel sets 9 after folding, resulting in a smaller footprint when stored.

[0035] like Figures 6 to 9 As shown, although this utility model does not reserve folding space for the front wheel assembly 4 between the two rear wheel assemblies 9, the front wheel assembly 4 can still be partially folded. However, the front-to-rear dimensions after folding will be slightly larger than when fully folded between the two rear wheel assemblies 9. Since the time spent carrying the folding golf cart is far less than the time spent folding and storing it at home, the partial folding or not folding of the front wheel assembly 4 has little impact on carrying it. The reduced footprint during storage provides greater convenience for users and has broad application prospects.

Claims

1. A folding golf cart, comprising a handlebar assembly, an upper frame, a front wheel assembly, a lower frame, and two rear wheel assemblies, wherein the upper frame is mounted on the lower frame and is rotatable relative to the lower frame under force, the front wheel assembly is mounted on the front end of the lower frame, and the two rear wheel assemblies are respectively mounted on the left and right sides of the rear of the lower frame, the handlebar assembly is foldable and mounted on the upper end of the upper frame, and the lower frame is provided with a sliding mechanism that is movable back and forth under force, wherein two multi-link motion mechanisms are arranged opposite each other on the left and right sides of the sliding mechanism, characterized in that... Each multi-link motion mechanism includes a first link, a second link, a third link, and a fourth link. The two ends of the first link are connected to the sliding mechanism and the upper frame, respectively, and can rotate relative to the sliding mechanism and the upper frame when subjected to force. The second link and the third link are spaced apart front to back. The two ends of the second link and the third link are connected to the sliding mechanism and a rear wheel assembly located on the same side, respectively, and can rotate relative to the sliding mechanism and the rear wheel assembly located on the same side when subjected to force. The two ends of the fourth link are connected to the rear ends of the second link and the lower frame, respectively, and can rotate relative to the second link and the lower frame when subjected to force, or connected to the rear ends of the third link and the lower frame, respectively, and can rotate relative to the third link and the lower frame when subjected to force.

2. A folding golf cart according to claim 1, characterized in that... The upper frame is provided with a folding lock, and the lower frame is provided with a folding hook at the front. The folding hook is used to hook the folding lock when the upper frame and the lower frame are folded, so that the upper frame and the lower frame do not come loose.

3. A folding golf cart according to claim 1, characterized in that... The handlebar assembly is mounted on the upper end of the upper frame via a first locking mechanism. The first locking mechanism is used to lock the handlebar assembly and the upper frame when they are unfolded and to release them when they are folded, so that the handlebar assembly can rotate relative to the upper frame for folding.

4. A folding golf cart according to claim 3, characterized in that... A second locking mechanism is provided between the upper frame and the lower frame for locking both in the unfolded state. An elastic connecting device is provided inside the upper frame. The elastic connecting device is connected to the first locking mechanism and the second locking mechanism respectively. The elastic connecting device is used to release the lock of the second locking mechanism when the first locking mechanism is unlocked and the handlebar assembly is folded.

5. A folding golf cart according to claim 4, characterized in that... The first locking mechanism includes a joint assembly, an upper bearing, a first driven shaft connected to the elastic connecting device, and a joint locking member for locking the joint assembly and the upper bearing. The joint assembly is fixedly connected to the handle assembly and is rotatably mounted on the upper bearing. A guide groove is provided on the inner side of the joint assembly, and the surface of the guide groove is uneven. A first guide hole extending vertically is provided on the upper bearing. The first driven shaft is located in the guide groove and the first guide hole. After the joint locking member is unlocked, when the handle assembly drives the joint assembly to rotate, the first driven shaft can move synchronously in the guide groove and the first guide hole.

6. A folding golf cart according to claim 5, characterized in that... The elastic connection device includes an upper slider, a lower slider, a steel wire rope, an elastic element, and a second driven shaft connected to the second locking mechanism. The upper slider is disposed at the upper end of the upper frame, and a cavity is provided in the upper bearing seat. The upper end of the upper frame is located in the cavity. A first through hole is provided on the upper slider, and the first driven shaft is located in the first through hole. When the handlebar assembly is rotated to drive the joint assembly to rotate, the first driven shaft can move synchronously in the guide groove and the first guide hole. The lower slider is disposed at the lower end of the upper frame, and the steel wire rope is located in the upper frame. The upper end of the steel wire rope is fixedly connected to the upper slider, and the lower end of the steel wire rope is fixedly connected to the lower slider. The lower end of the elastic element is connected to the lower slider, and the upper end of the elastic element is connected to the upper frame. A second through hole is provided on the lower slider. Two vertically extending second guide holes are provided on the lower side wall of the upper frame, and the second driven shaft is located in the two second guide holes and the second through hole.

7. A folding golf cart according to claim 6, characterized in that... The second locking mechanism includes a lower fixed seat, a connecting assembly, and a rotating shaft fixed on the lower frame. The connecting assembly is connected to the sliding mechanism and the upper frame respectively. The lower fixed seat is provided with a groove and a slot. The lower end of the upper frame is located in the groove and is mounted on the lower fixed seat through the rotating shaft. When the second locking mechanism is in the locked state, the second driven shaft is located in the slot and is fixed.

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