Folding and locking mechanism for frame of electric vehicle

Abstract

The utility model relates to the field of electric vehicle frame folding, in particular to an electric vehicle frame folding and locking mechanism which comprises a first folding part, a folding movable groove is formed in the first folding part, one side of the first folding part is rotationally connected with a second folding part, and the left side and the right side of the first folding part are both fixedly connected with self-locking assemblies. Slots are formed in the left side and the right side of the second folding part; a positioning groove is formed in the second folding part, an inserting groove is formed in the lower end face of the positioning groove, a pull rod is connected into the first folding part in a penetrating mode, the lower end face of the pull rod is fixedly connected with an inserting assembly, and the pull rod is sleeved with a first elastic piece; the self-locking assembly comprises an inserting rod, one end of the inserting rod is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a trapezoidal fixed block, and the connecting rod is slidably sleeved with a trapezoidal movable block; according to the foldable self-locking electric vehicle, the portability is improved, and meanwhile the practicability is greatly enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle frame folding, and in particular to an electric vehicle frame folding locking mechanism. Background Technology

[0002] Electric vehicles are becoming increasingly accepted by the public due to their convenience and environmental friendliness. Electric vehicles are modified from existing bicycles, with the addition of batteries, drive systems, and electronic control systems enabling them to operate quickly powered by electricity. An electric vehicle frame is the overall framework used in electric vehicles.

[0003] The prior art patent CN207060274U discloses a lightweight electric vehicle, including an electric vehicle frame body. The electric vehicle frame body is composed of a front end bracket disposed on one side of the electric vehicle frame body and a rear end bracket disposed on the side of the electric vehicle frame body. A seat is installed on the side of the handrail and is embedded in the rear end bracket. A support roller is installed at the bottom of the seat and is tightly welded to the rear end bracket. Multiple evenly distributed rear wheel brackets are installed at the bottom of the rear end bracket. This lightweight electric vehicle frame installs the controller, anti-theft device, lithium battery and converter at the front and rear of the front end bracket and covers them with anti-theft covers, which helps to improve the anti-theft performance of the lightweight electric vehicle frame. The controller is installed at the L-shaped tube, which can provide air cooling for the controller during the electric vehicle's movement and can effectively waterproof it, reducing the failure rate of the controller.

[0004] However, existing electric vehicles are usually only small ones with folding function, and larger electric vehicles have larger frames and take up more space, making them inconvenient to fold. Moreover, folded electric vehicles are prone to unfolding on their own. Without an automatic locking mechanism, they are easy to unfold automatically, resulting in poor portability and practicality. Utility Model Content

[0005] To overcome the problem that existing electric vehicles cannot be self-locked while folding, resulting in them automatically unfolding when stored, thus reducing portability and practicality.

[0006] The technical solution of this utility model is as follows: an electric vehicle frame folding and locking mechanism, including a first folding part, the interior of which is provided with a folding movable groove, a second folding part rotatably connected to one side of the first folding part, self-locking components fixedly connected to both sides of the first folding part, and slots provided on both sides of the second folding part; a positioning groove is provided inside the second folding part, and an insertion groove is provided on the lower end face of the positioning groove; a pull rod is passed through the interior of the first folding part, and an insertion component is fixedly connected to the lower end face of the pull rod; a first elastic element is sleeved on the outside of the pull rod; the self-locking component includes an insertion rod, one end of which is fixedly connected to a connecting rod, one end of which is fixedly connected to a trapezoidal fixing block, and a trapezoidal movable block is slidably sleeved on the outside of the connecting rod; limit grooves are provided on both sides of the slots, and engaging components are provided inside the two limit grooves; the engaging components include engaging blocks, one side of which is fixedly connected to a movable rod, and a second elastic element is sleeved on the outside of the movable rod.

[0007] Preferably, the first folding part and the second folding part are rotatably connected by a pivot located inside the folding movable groove, and the second folding part can rotate left and right through the pivot.

[0008] Preferably, the insert rod, trapezoidal fixing block, connecting rod, and trapezoidal movable block are all inserted into the slot, the trapezoidal movable block is slidably sleeved on the outside of the connecting rod, the trapezoidal movable block is guided to slide by the connecting rod, and there is an engagement gap between the trapezoidal fixing block and the trapezoidal movable block.

[0009] Preferably, both movable rods are located in two limiting grooves, and a limiting block is fixedly connected to one side of each movable rod. The second elastic element includes a first spring sleeved on the outside of the movable rod. When the locking block is squeezed, the movable rod is displaced to one side, and the first spring is compressed.

[0010] Preferably, the locking block is engaged in the locking gap, one side of the locking block is a beveled structure, and the corners of the trapezoidal fixed block and the trapezoidal movable block are arc-shaped, with the beveled side and the arc-shaped side fitting and pressing together.

[0011] Preferably, an auxiliary block is fixedly connected to the upper end face of the pull rod, and the first elastic element includes a second spring sleeved on the outside of the pull rod, which is compressed when the pull rod is pulled.

[0012] Preferably, the connector includes a plug block fixedly connected to the lower end face of the pull rod, the plug block is inserted into the plug slot, the pull rod is fixedly sleeved with the plug block, the plug block is inserted into the positioning slot, and the pull rod and the plug block are connected through each other.

[0013] The beneficial effects of this utility model are:

[0014] 1. The electric vehicle frame folding and locking mechanism, through the cooperation of the trapezoidal fixed block and the trapezoidal movable block, utilizes the squeezing action of the arc-shaped edge structure and the inclined edge structure of the locking block to achieve self-locking of the first folding part and the second folding part, thereby improving the portability of the electric vehicle folding and the practicality of the self-locking structure.

[0015] 2. The electric vehicle frame folding and locking mechanism, through the cooperation of the plug block, the pull rod, and the second spring, achieves the fixation of the second folding part when unfolded and the release when folded, which is convenient to operate and more practical. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the electric vehicle frame folding and locking mechanism of this utility model.

[0017] Figure 2 This utility model is shown. Figure 1 A magnified schematic diagram of the three-dimensional structure at point A;

[0018] Figure 3 The diagram shown is a cross-sectional internal structure diagram of the folding self-locking structure of this utility model;

[0019] Figure 4 This utility model is shown. Figure 3 A magnified schematic diagram of the three-dimensional structure at point B;

[0020] Figure 5 The diagram shown is a partial structural schematic of the unfolding and locking structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. First folding part; 2. Second folding part; 3. Insert rod; 4. Slot; 5. Folding movable slot; 6. Trapezoidal fixing block; 7. Connecting rod; 8. Trapezoidal movable block; 9. Movable rod; 10. Limiting slot; 11. First spring; 12. Engaging block; 13. Pull rod; 14. Inserting block; 15. Insertion block; 16. Second spring; 17. Positioning slot; 18. Insertion slot. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of an electric vehicle frame folding and locking mechanism, including a first folding part 1, the first folding part 1 having a folding movable groove 5 inside, a second folding part 2 rotatably connected to one side of the first folding part 1, a rotating shaft located inside the folding movable groove 5 rotatably connecting the first folding part 1 and the second folding part 2, the second folding part 2 being rotatable left and right via the rotating shaft, self-locking components fixedly connected to both sides of the first folding part 1, slots 4 opening on both sides of the second folding part 2; a positioning groove 17 opening inside the second folding part 2, a insertion groove 18 opening on the lower end face of the positioning groove 17, a pull rod 13 penetratingly connected inside the first folding part 1, a insertion component fixedly connected to the lower end face of the pull rod 13, the pull rod 1... The outer sleeve of 3 is fitted with a first elastic element (to overcome the elastic force of the elastic element; the first elastic element can be the second spring 16 of this utility model, or an elastic rubber element, etc.); the self-locking assembly includes a plug rod 3, one end of the plug rod 3 is fixedly connected to a connecting rod 7, one end of the connecting rod 7 is fixedly connected to a trapezoidal fixing block 6, a trapezoidal movable block 8 is slidably fitted to the outer sleeve of the connecting rod 7, and limit grooves 10 are opened on both the left and right sides of the slot 4. The two limit grooves 10 are both provided with a locking assembly, the locking assembly includes a locking block 12, one side of the locking block 12 is fixedly connected to a movable rod 9, and the outer sleeve of the movable rod 9 is fitted with a second elastic element (to overcome the elastic force of the elastic element; the first elastic element can be the first spring 11 of this utility model, or an elastic rubber element, etc.).

[0024] Please see Figures 3-4 In this embodiment, the insert rod 3, trapezoidal fixing block 6, connecting rod 7, and trapezoidal movable block 8 are all inserted into the slot 4. The trapezoidal movable block 8 is slidably sleeved on the outside of the connecting rod 7. The trapezoidal movable block 8 is guided to slide by the connecting rod 7. There is a locking gap between the trapezoidal fixing block 6 and the trapezoidal movable block 8. Both movable rods 9 are located in the two limiting grooves 10. A limiting block is fixedly connected to one side of each of the two movable rods 9. The second elastic element includes a first spring 11 sleeved on the outside of the movable rod 9. When the locking block 12 is squeezed, the movable rod 9 is displaced to one side, the first spring 11 is compressed, and the locking block 12 is locked in the locking gap. One side of the locking block 12 is a beveled structure. The trapezoidal fixing block 6 and The trapezoidal movable block 8 has rounded corners. By pressing the inclined side against the rounded side, the trapezoidal fixed block 6, connecting rod 7, and trapezoidal movable block 8 are inserted into the slot 4. At the same time, the rounded side of the trapezoidal fixed block 6 contacts the inclined side of one side of the two locking blocks 12 and presses them together, causing the two locking blocks 12 to be pushed to the sides and displaced. At the same time, the first spring 11 sleeved on the outside of the two movable rods 9 is compressed. After the trapezoidal fixed block 6 is inserted, the two first springs 11 release the two locking blocks 12, so that they are locked into the gap between the trapezoidal fixed block 6 and the trapezoidal movable block 8 for fixation, thus completing the self-locking.

[0025] Please see Figure 5 In this embodiment, an auxiliary block is fixedly connected to the upper end face of the pull rod 13. The first elastic element includes a second spring 16 sleeved on the outside of the pull rod 13. When the pull rod 13 is pulled, the second spring 16 is compressed. The plug-in element includes a plug-in block 15 fixedly connected to the lower end face of the pull rod 13. The plug-in block 15 is inserted into the plug-in groove 18. A plug-in block 14 is fixedly sleeved on the outside of the pull rod 13. The plug-in block 14 is inserted into the positioning groove 17. The pull rod 13 and the plug-in block 14 are connected through each other. The second folded part 2 after unfolding is located inside the folding movable groove 5. The pull rod 13 is pressed upward so that the plug-in block 15 on its lower end face is inserted into the plug-in groove 18 for fixation, thus completing its unfolding movement.

[0026] During operation, the first folding part 1 and the second folding part 2 are flipped and folded using the internally rotating through-connected movable shaft. After folding, the insert rod 3 is inserted into the slot 4, and the trapezoidal fixing block 6, connecting rod 7, and trapezoidal movable block 8 are also inserted into the slot 4. At the same time, the arc-shaped edge structure on the outside of the trapezoidal fixing block 6 contacts and presses against the inclined edge structure on one side of the two locking blocks 12, causing the two locking blocks 12 to move within the limiting groove 10 via the movable rod 9. Simultaneously, the first spring 11 sleeved on the outside of the two movable rods 9 is compressed. After the trapezoidal fixing block 6 is engaged, the two first springs 11 prevent the two locking blocks 12 from loosening. If the pull rod 3 is inserted further inward, the arc-shaped edge structure of the trapezoidal movable block 8 will be pressed against the inclined edge structure of the locking block 12. At the same time, the trapezoidal movable block 8 will slide outside the connecting rod 7, so that the trapezoidal movable block 8 and the trapezoidal fixed block 6 are close together. Then it can be disengaged from the slot 4, and the first fold 1 and the second fold 2 can be unfolded. After unfolding, the second fold 2 is located inside the folding movable groove 5. The pull rod 13 is pressed upward, so that the insertion block 15 on its lower end face is inserted into the insertion groove 18 for fixation, thus completing the unfolding movement.

[0027] Through the above steps, by the cooperation of the trapezoidal fixing block 6 and the trapezoidal movable block 8, and by the squeezing action of the arc-shaped edge structure and the inclined edge structure of the locking block 12, the first folding part 1 and the second folding part 2 are self-locked, so as to solve the problem that existing electric vehicles cannot be self-locked while folding, resulting in them automatically unfolding when stored, which leads to poor portability and practicality.

Claims

1. A folding and locking mechanism for an electric vehicle frame, comprising a first folding portion (1), characterized in that: The first folding part (1) has a folding groove (5) inside. The second folding part (2) is rotatably connected to one side of the first folding part (1). Self-locking components are fixedly connected to both the left and right sides of the first folding part (1). Slots (4) are opened on both the left and right sides of the second folding part (2). The second folding part (2) has a positioning groove (17) inside, and a plug-in groove (18) is provided on the lower end face of the positioning groove (17). A pull rod (13) is connected through the first folding part (1). A plug-in component is fixedly connected to the lower end face of the pull rod (13). A first elastic element is sleeved on the outside of the pull rod (13). The self-locking assembly includes a plug rod (3), one end of which is fixedly connected to a connecting rod (7), one end of which is fixedly connected to a trapezoidal fixing block (6), and a trapezoidal movable block (8) is slidably sleeved on the outside of the connecting rod (7). Limiting grooves (10) are opened on both the left and right sides of the slot (4). A locking assembly is provided inside the two limiting grooves (10). The locking assembly includes a locking block (12), one side of which is fixedly connected to a movable rod (9), and a second elastic member is sleeved on the outside of the movable rod (9).

2. The electric vehicle frame folding and locking mechanism according to claim 1, characterized in that: The first folding part (1) and the second folding part (2) are rotatably connected by a pivot located inside the folding movable groove (5), and the second folding part (2) can rotate left and right through the pivot.

3. The electric vehicle frame folding and locking mechanism according to claim 1, characterized in that: The insert rod (3), trapezoidal fixing block (6), connecting rod (7) and trapezoidal movable block (8) are all inserted into the slot (4). The trapezoidal movable block (8) is slidably sleeved on the outside of the connecting rod (7). The trapezoidal movable block (8) is guided to slide by the connecting rod (7). There is a locking gap between the trapezoidal fixing block (6) and the trapezoidal movable block (8).

4. The electric vehicle frame folding and locking mechanism according to claim 1, characterized in that: Both movable rods (9) are located in two limiting grooves (10). One side of each movable rod (9) is fixedly connected to a limiting block. The second elastic element includes a first spring (11) sleeved on the outside of the movable rod (9). When the locking block (12) is squeezed, the movable rod (9) is displaced to one side and the first spring (11) is compressed.

5. The electric vehicle frame folding and locking mechanism according to claim 3, characterized in that: The locking block (12) is engaged in the locking gap. One side of the locking block (12) is a beveled structure. The corners of the trapezoidal fixed block (6) and the trapezoidal movable block (8) are arc-shaped structures. The beveled side and the arc-shaped side are pressed together.

6. The electric vehicle frame folding and locking mechanism according to claim 1, characterized in that: An auxiliary block is fixedly connected to the upper end face of the pull rod (13). The first elastic element includes a second spring (16) sleeved on the outside of the pull rod (13). The second spring (16) is compressed when the pull rod (13) is pulled.

7. The electric vehicle frame folding and locking mechanism according to claim 1, characterized in that: The connector includes a plug block (15) fixedly connected to the lower end face of the pull rod (13), the plug block (15) is inserted into the plug groove (18), the pull rod (13) is fixedly sleeved with a plug block (14), the plug block (14) is inserted into the positioning groove (17), and the pull rod (13) and the plug block (14) are connected through each other.

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