A linkage folding structure of a trolley frame

Abstract

The utility model discloses a kind of handcart frame linkage folding structure, including joint, joint is fixed in the upper frame lower part of handcart, and with the lower frame shaft of handcart, handcart frame linkage folding structure further include snap buckle type transmission mechanism, connecting rope and locking mechanism;Snap buckle type transmission mechanism is installed in upper frame upper part;Locking mechanism is installed on joint, and when it is locked, joint and lower frame are relatively fixed, when it is unlocked, lower frame can rotate relative to joint;Snap buckle type transmission mechanism and locking mechanism are connected by connecting rope;Snap buckle type transmission mechanism is used to adopt the mode of pulling to drive connecting rope to move upwards, realize the unlocking of locking mechanism;Advantages are not needed user to squat or bend, can realize upper frame and lower frame folding, with stronger operation convenience.

Description

Technical Field

[0001] This utility model relates to a folding structure for a vehicle frame, and more particularly to a folding structure for a handcart frame. Background Technology

[0002] Existing trolleys, such as golf bag carts, typically include an upper frame, a lower frame, a handlebar assembly, a front wheel assembly, and two rear wheel assemblies. The upper frame is mounted on the lower frame, the handlebar assembly is mounted on the upper part of the upper frame, 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 end of the lower frame.

[0003] To facilitate storage, transportation, and portability, current handcarts are generally designed to be foldable. The upper frame is mounted to the lower frame via a joint, with a locking mechanism at the joint. When locked, the upper and lower frames are fixed; when unlocked, the upper frame rotates around the joint and folds onto the lower frame. However, existing locking mechanisms are typically located near the connection between the upper and lower frames, requiring multiple operations to unlock. Furthermore, unlocking necessitates the user crouching or bending significantly, thus compromising the convenience of folding the upper and lower frames. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a trolley frame linkage folding structure that can realize the folding of the upper and lower frames without the user having to squat or bend over, and has strong operational convenience.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a trolley frame linkage folding structure, including a joint component, the joint component being fixed to the lower part of the upper frame of the trolley and axially connected to the lower frame of the trolley; the trolley frame linkage folding structure further includes a lever-type transmission mechanism, a connecting rope, and a locking mechanism; the lever-type transmission mechanism is installed on the upper part of the upper frame; the locking mechanism is installed on the joint component, and when locked, the joint component and the lower frame are relatively fixed; when unlocked, the lower frame can rotate relative to the joint component; the lever-type transmission mechanism and the locking mechanism are connected by the connecting rope; the lever-type transmission mechanism is used to drive the connecting rope upward by levering, thereby unlocking the locking mechanism.

[0006] Compared with the prior art, the advantages of this utility model are that by setting a lever-type transmission mechanism, a connecting rope, and a locking mechanism in the linkage folding structure of the handcart frame, the lever-type transmission mechanism is installed on the upper part of the upper frame, and the locking mechanism is installed on the joint. The lever-type transmission mechanism and the locking mechanism are connected by the connecting rope. When the lever-type transmission mechanism is turned, it will drive the connecting rope to move upward, thereby unlocking the locking mechanism. This allows the joint to rotate relative to the lower frame, realizing the folding of the upper and lower frames. Therefore, this utility model can fold the upper and lower frames without the user having to squat or bend over, making it highly convenient to operate.

[0007] Furthermore, the lever-type transmission mechanism includes a closing lever, a mounting base, an upper slider, a left pull lever, and a right pull lever; the mounting base is sleeved and fixed on the outer side of the top of the upper frame; the middle part of the closing lever is axially connected to the top of the mounting base; the left pull lever and the right pull lever are respectively located on the left and right sides of the top of the upper frame; the upper parts of the left pull lever and the right pull lever are both axially connected to the lower part of the closing lever; the middle part of the left pull lever is provided with a left sliding groove, and the middle part of the right pull lever is provided with a right sliding groove; the middle parts of the left pull lever, the middle parts of the right pull lever, and the mounting base are connected by a first connection. The components are connected as follows: the first connecting component is located within the left and right sliding grooves and can move up and down along the left and right sliding grooves under force; the mounting base is provided with a first sliding groove, and the upper slider is located within the upper part of the upper frame and can move up and down along the upper frame under force; the upper part of the upper frame is provided with a second sliding groove; the lower part of the left pull buckle, the lower part of the right pull buckle, the mounting base, the upper part of the upper frame, and the upper slider are connected by a second connecting component, which is located within the first and second sliding grooves; the upper slider is connected to the connecting rope.

[0008] Furthermore, the first connector includes a first bolt and a first nut; the first bolt passes through the left slide groove, the mounting base, and the right slide groove; the first nut is mounted on the first bolt; the second connector includes a second bolt and a second nut, the second bolt passes through the left pull buckle, the first slide groove, the second slide groove, the upper slider, and the right pull buckle, and the second nut is mounted on the second bolt.

[0009] Furthermore, the upper parts of the left pull buckle and the right pull buckle are pivotally connected to the lower part of the closing lever buckle via a third connector. The third connector includes a third bolt and a third nut, with the third bolt passing through the left pull buckle, the right pull buckle, and the closing lever buckle. The middle part of the closing lever buckle is pivotally connected to the top of the mounting base via a fourth connector. The fourth connector includes a fourth bolt and a fourth nut, with the fourth bolt passing through the closing lever buckle and the mounting base, and the fourth nut mounted on the fourth bolt.

[0010] Furthermore, an upper tube sleeve is provided on the outer side of the upper slider, the upper tube sleeve is fixed on the upper frame, and a third slide groove is provided on it at the position opposite to the second slide groove; the second connecting member is also located in the third slide groove.

[0011] Furthermore, the locking mechanism includes a fixing pin, a lower slider, a lower sleeve, and an elastic element; the lower sleeve is disposed inside the joint component, and the lower slider is disposed inside the lower sleeve; the lower slider is connected to the connecting rope; the elastic element is located above the lower slider, with its lower end connected to the lower slider and its upper end connected to the lower sleeve; the lower sleeve is provided with a fourth sliding groove, the lower part of the upper frame is provided with a fifth sliding groove, and the joint component is provided with a sixth sliding groove; the fixing pin passes through the lower slider, the fourth sliding groove, the fifth sliding groove, and the sixth sliding groove respectively, and its left and right ends are used to cooperate with the preset slots on the left and right sides of the lower frame; when the fixing pin moves upward, it can disengage from the preset slots on the left and right sides of the lower frame, thereby unlocking the locking mechanism.

[0012] Furthermore, the elastic element is a spring.

[0013] Furthermore, the connecting rope is a steel rope. Attached Figure Description

[0014] Figure 1 This is an exploded view of the linked folding structure of the handcart frame of this utility model; Figure 2 This is a cross-sectional view of the handcart frame linkage folding structure of this utility model installed on the upper frame; Figure 3 This is a schematic diagram of the linkage and folding structure of the handcart frame of this utility model installed on the upper frame; Figure 4 A diagram showing the unfolded state of a golf bag cart using the linked folding structure of the cart frame of this utility model; Figure 5 This diagram shows the folded state of a golf bag cart using the linked folding structure of this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] Example 1: As Figures 1 to 3As shown, a trolley frame linkage folding structure includes a joint 1, which is fixed to the lower part of the upper frame 2 of the trolley and axially connected to the lower frame 3 of the trolley. The trolley frame linkage folding structure also includes a lever-type transmission mechanism, a connecting rope 4, and a locking mechanism. The lever-type transmission mechanism is installed on the upper part of the upper frame 2. The locking mechanism is installed on the joint 1, and when it is locked, the joint 1 and the lower frame 3 are relatively fixed. When it is unlocked, the lower frame 3 can rotate relative to the joint 1. The lever-type transmission mechanism and the locking mechanism are connected by the connecting rope 4. The lever-type transmission mechanism is used to drive the connecting rope 4 upward by levering, thereby unlocking the locking mechanism.

[0017] In this embodiment, when the lever-type transmission mechanism is activated, the lever-type transmission mechanism will drive the connecting rope 4 to move upward, thereby unlocking the locking mechanism. This allows the joint 1 to rotate relative to the lower frame 3, enabling the upper frame 2 and the lower frame 3 to be folded. Thus, the upper frame 2 and the lower frame 3 can be folded without the user squatting or bending over, making the operation highly convenient.

[0018] Example 2: This example is basically the same as Example 1, except that: In this example, the lever-type transmission mechanism includes a closing lever 5, a mounting base 6, an upper slider 7, a left pull lever 8, and a right pull lever 9; the mounting base 6 is sleeved and fixed on the outer side of the top of the upper frame 2; the middle part of the closing lever 5 is pivotally connected to the top of the mounting base 6; the left pull lever 8 and the right pull lever 9 are respectively located on the left and right sides of the top of the upper frame 2; the upper parts of the left pull lever 8 and the right pull lever 9 are pivotally connected to the lower part of the closing lever 5; the middle part of the left pull lever 8 is provided with a left sliding groove 81, and the middle part of the right pull lever 9 is provided with a right sliding groove 91; the middle parts of the left pull lever 8 and the middle parts of ... upper frame 2; the middle parts of the left pull lever 8 and the middle parts of the right pull lever 9 are pivotally connected with the lower part of the upper frame 2; the middle parts of the left pull lever 8 and the middle parts of the right pull lever 9 are pivotally connected with the lower part of the upper frame 2; the middle parts of the left pull lever 8 and the middle parts of the right pull lever 9 are pivotally connected with the lower part The upper part and the mounting base 6 are connected by a first connector; the first connector is located in the left slide groove 81 and the right slide groove 91, and can move up and down along the left slide groove 81 and the right slide groove 91 under force; the mounting base 6 is provided with a first slide groove 61, and the upper slider 7 is located in the upper part of the upper frame 2, and can move up and down along the upper frame 2 under force; the upper part of the upper frame 2 is provided with a second slide groove 21; the lower part of the left pull buckle 8, the lower part of the right pull buckle 9, the mounting base 6, the upper part of the upper frame 2 and the upper slider 7 are connected by a second connector, and the second connector is located in the first slide groove 61 and the second slide groove 21; the upper slider 7 is connected to the connecting rope 4.

[0019] In this embodiment, the first connector includes a first bolt 10 and a first nut 11; the first bolt 10 passes through the left slide groove 81, the mounting base 6 and the right slide groove 91; the first nut 11 is installed on the first bolt 10; the second connector includes a second bolt 12 and a second nut 13; the second bolt 12 passes through the left pull buckle 8, the first slide groove 61, the second slide groove 21, the upper slider 7 and the right pull buckle 9; the second nut 13 is installed on the second bolt 12.

[0020] In this embodiment, the upper parts of the left pull buckle 8 and the right pull buckle 9 are pivotally connected to the lower part of the retractable buckle 5 via a third connector. The third connector includes a third bolt 14 and a third nut 15. The third bolt 14 passes through the left pull buckle 8, the right pull buckle 9, and the retractable buckle 5. The middle part of the retractable buckle 5 is pivotally connected to the top of the mounting base 6 via a fourth connector. The fourth connector includes a fourth bolt 16 and a fourth nut 17. The fourth bolt 16 passes through the retractable buckle 5 and the mounting base 6, and the fourth nut 17 is installed on the fourth bolt 16.

[0021] In this embodiment, an upper tube sleeve 18 is provided on the outer side of the upper slider 7. The upper tube sleeve 18 is fixed on the upper frame 2, and a third slide groove 181 is provided on it opposite to the second slide groove 21. The second connector is also located in the third slide groove 181.

[0022] In this embodiment, the locking mechanism includes a fixing pin 19, a lower slider 20, a lower sleeve 22, and an elastic element 23. The lower sleeve 22 is disposed inside the joint 1, and the lower slider 20 is disposed inside the lower sleeve 22. The lower slider 20 is connected to the connecting rope 4. The elastic element 23 is located above the lower slider 20, and its lower end is connected to the lower slider 20, and its upper end is connected to the lower sleeve 22. The lower sleeve 22 is provided with a fourth sliding groove 26, the lower part of the upper frame 2 is provided with a fifth sliding groove 24, and the joint 1 is provided with a sixth sliding groove 25. The fixing pin 19 passes through the lower slider 20, the fourth sliding groove 201, the fifth sliding groove 24, and the sixth sliding groove 25 respectively, and its left and right ends are used to cooperate with the preset slots on the left and right sides of the lower frame 3. When the fixing pin 19 moves upward, it can leave the preset slots on the left and right sides of the lower frame 3, thereby unlocking the locking mechanism.

[0023] In this embodiment, the elastic element 23 is a spring, and the connecting rope 4 is a steel rope.

[0024] In this embodiment, as Figure 4 and Figure 5As shown, when the trolley is in the unfolded state, the spring is in a natural extension and contraction state, and the two ends of the fixing pin 19 are inserted into the preset slots on the left and right sides of the lower frame 3, preventing the lower frame 3 and the joint 1 from rotating relative to each other. When it is necessary to fold the upper frame 2 and the lower frame 3 of the trolley, the folding lever 5 is pulled back. At this time, the folding lever 5 rotates counterclockwise around the fourth bolt 16, and at the same time, the left pull lever 8 and the right pull lever 9 on the left and right sides of the mounting base 6 are pulled upward. The left pull lever 8 and the right pull lever 9 are pulled upward along the first bolt 10. When the left pull lever 8 and the right pull lever 9 are pulled upward, the second bolt 12 simultaneously drives the upper slider 7 to slide upward along the second slide groove 21 and the third slide groove 181. Because the upper slider 7 pulls the connecting rope 4 upward when it slides upward, the connecting rope 4 pulls the lower slider 20 upward when it is pulled upward. When the lower slider 20 slides upward, it compresses the spring and causes the fixing pin 19 to slide upward in the fourth slide groove 201, the fifth slide groove 24, and the sixth slide groove 25, causing the fixing pin 19 to disengage from the slot on the lower frame 3. At this time, the lower frame 3 and the joint 1 can rotate relative to each other. Pushing the upper frame 2 downward will allow the upper frame 2 and the lower frame 3 to fold. When the folding lever 5 is released, the lower slider 20 slides downward under the action of the spring force, pulling the connecting rope 4 downward. The connecting rope 4 pulls the upper slider 7 downward to reset, and the left and right ends of the fixing pin 19 are inserted back into the preset slots on the left and right sides of the lower frame 3. The lower frame 3 and the joint 1 can no longer rotate relative to each other.

[0025] In summary, this utility model constitutes a trolley frame linkage folding structure through joint component 1, lever-type transmission mechanism, connecting rope 4, and locking mechanism. The lever-type transmission mechanism is installed on the upper part of the upper frame, and the locking mechanism is unlocked through the lever-type transmission mechanism. Thus, the upper and lower frames can be folded without the user squatting or bending over. It is highly convenient to operate, provides a better user experience, and has broad application prospects.

Claims

1. A trolley frame linkage folding structure, comprising a joint member, said joint member being fixed to the lower part of the upper frame of the trolley and pivotally connected to the lower frame of the trolley, characterized in that, The trolley frame linkage folding structure also includes a lever-type transmission mechanism, a connecting rope, and a locking mechanism; the lever-type transmission mechanism is installed on the upper part of the upper frame; the locking mechanism is installed on the joint member, and when it is locked, the joint member and the lower frame are relatively fixed; when it is unlocked, the lower frame can rotate relative to the joint member; the lever-type transmission mechanism and the locking mechanism are connected by the connecting rope; the lever-type transmission mechanism is used to drive the connecting rope upward by levering, thereby unlocking the locking mechanism.

2. The handcart frame linkage folding structure according to claim 1, characterized in that, The lever-type transmission mechanism includes a closing lever, a mounting base, an upper slider, a left pull lever, and a right pull lever. The mounting base is sleeved and fixed on the outer side of the top of the upper frame. The middle part of the closing lever is axially connected to the top of the mounting base. The left pull lever and the right pull lever are respectively located on the left and right sides of the top of the upper frame. The upper parts of the left pull lever and the right pull lever are axially connected to the lower part of the closing lever. The middle part of the left pull lever is provided with a left sliding groove, and the middle part of the right pull lever is provided with a right sliding groove. The middle parts of the left pull lever, the middle parts of the right pull lever, and the mounting base are connected by a first connecting member. The first connecting member is located within the left and right sliding grooves and can move up and down along the left and right sliding grooves under force; the mounting base is provided with a first sliding groove, and the upper slider is located within the upper part of the upper frame and can move up and down along the upper frame under force; the upper part of the upper frame is provided with a second sliding groove; the lower part of the left pull buckle, the lower part of the right pull buckle, the mounting base, the upper part of the upper frame, and the upper slider are connected by a second connecting member, which is located within the first and second sliding grooves; the upper slider is connected to the connecting rope.

3. The trolley frame linkage folding structure according to claim 2, characterized in that, The first connector includes a first bolt and a first nut; the first bolt passes through the left slide groove, the mounting base, and the right slide groove; the first nut is mounted on the first bolt; the second connector includes a second bolt and a second nut, the second bolt passes through the left pull buckle, the first slide groove, the second slide groove, the upper slider, and the right pull buckle, and the second nut is mounted on the second bolt.

4. The trolley frame linkage folding structure according to claim 2, characterized in that, The upper parts of the left and right pull buckles are pivotally connected to the lower part of the closing lever buckle via a third connector. The third connector includes a third bolt and a third nut. The third bolt passes through the left pull buckle, the right pull buckle, and the closing lever buckle. The middle part of the closing lever buckle is pivotally connected to the top of the mounting base via a fourth connector. The fourth connector includes a fourth bolt and a fourth nut. The fourth bolt passes through the closing lever buckle and the mounting base, and the fourth nut is installed on the fourth bolt.

5. The handcart frame linkage folding structure according to claim 2, characterized in that, An upper tube sleeve is provided on the outer side of the upper slider, the upper tube sleeve is fixed on the upper frame, and a third slide groove is provided on it at the position opposite to the second slide groove; the second connecting member is also located in the third slide groove.

6. The trolley frame linkage folding structure according to claim 3, characterized in that, The locking mechanism includes a fixing pin, a lower slider, a lower sleeve, and an elastic element; the lower sleeve is disposed inside the joint component, and the lower slider is disposed inside the lower sleeve; the lower slider is connected to the connecting rope; the elastic element is located above the lower slider, with its lower end connected to the lower slider and its upper end connected to the lower sleeve; the lower sleeve is provided with a fourth sliding groove, the lower part of the upper frame is provided with a fifth sliding groove, and the joint component is provided with a sixth sliding groove; the fixing pin passes through the lower slider, the fourth sliding groove, the fifth sliding groove, and the sixth sliding groove respectively, and its left and right ends are used to cooperate with the preset slots on the left and right sides of the lower frame; when the fixing pin moves upward, it can disengage from the preset slots on the left and right sides of the lower frame, thereby unlocking the locking mechanism.

7. The handcart frame linkage folding structure according to claim 6, characterized in that, The elastic element is a spring.

8. The trolley frame linkage folding structure according to claim 1, characterized in that, The connecting rope is a steel rope.

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