A locking structure of a rear basket of an electric tricycle

Abstract

The utility model discloses a lock catch structure of electric tricycle rear hopper belongs to electric vehicle production technical field. The structure includes the rear hopper and the hopper door of hinge connection with rear hopper, and the hopper door is through fixed pin clamping limit with rear hopper, and the fixed pin is by the first rotation lever of rotation setting on the hopper door and is driven. The fixed part that cooperates with fixed pin is equipped in the inboard of hopper door, and the fixed part is through the rigid connection of limiting link and fixed pin, and forms the linkage mechanism. Compared with traditional technology, the advantage of the utility model lies in: the pin lock structure of fixed pin is replaced traditional buckle structure, utilizes the linear motion cooperation of pin body and pin hole, avoids the rust jam problem that buckle leads to because of long -term exposure, and simultaneously through the lever principle drive fixed pin translation of first rotation lever, and the operating torque can be optimized, and the human power required for opening and closing is reduced significantly. The utility model keeps the original function on the basis, effectively solved the use disadvantage of traditional buckle structure, improved the reliability and operation comfort of equipment.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle manufacturing technology, specifically to a locking structure for the rear bed of an electric tricycle. Background Technology

[0002] Most existing electric tricycles are equipped with a folding cargo door in the rear cargo bed, which is connected to the main body of the cargo bed via a locking mechanism. During cargo transportation, the locking mechanism is in a locked state to ensure cargo safety; however, when loading or unloading cargo, the locking mechanism must be opened so that the cargo door can fold down.

[0003] However, this traditional latch connection structure has obvious drawbacks. Because the latch components are exposed to the complex external environment for extended periods, they are susceptible to corrosion from rainwater, dust, and corrosive substances, leading to rust. Over time, rust can cause the latch mechanism to jam, making opening and closing difficult, severely impacting ease of use and reliability. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide a locking structure for the rear bed of an electric tricycle, so as to solve the problem that the locking structure is difficult to open and close after corrosion in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a locking structure for the rear bed of an electric tricycle, including a rear bed and a door hinged to the rear bed. The door and the rear bed are locked together by a fixing pin, and the fixing pin is actuated by a first rotating rod mounted on the door. The door is also provided with a fixing part that works with the fixing pin, and the fixing part is connected to the fixing pin by a limiting rod.

[0006] Optionally, the rear bucket and the bucket door are respectively provided with overlapping first through holes and second through holes, and the fixing pin is engaged between the first through hole and the second through hole.

[0007] Optionally, the hopper gate has a cavity for accommodating the first rotating rod. The first rotating rod is rotatably mounted in the cavity via a fixed seat. The first rotating rod has a sliding groove, and a rotating shaft is fixed on the fixed pin. The rotating shaft is slidably mounted in the sliding groove.

[0008] Optionally, a handle is fixedly connected to the end of the first rotating rod away from the fixed pin, and a groove for the handle to move is provided on the bucket door, the groove being connected to the cavity.

[0009] Optionally, the fixing part is provided with a third through hole, the fixing pin is provided with a fourth through hole that overlaps with the third through hole, the limiting rod is inserted into the third through hole and the fourth through hole, the limiting rod is fixed on the magnetic suction part, and the magnetic suction part is magnetically attracted to the rear bucket.

[0010] Optionally, the fixing part is further provided with a fifth through hole, and a fixing ball is provided in the fifth through hole. The fixing ball passes through the fixing part and abuts against the fixing pin. A top ball rod is also fixed on the magnetic suction part. The top ball rod extends into the fifth through hole and abuts against the fixing ball.

[0011] Optionally, the fixing pin has a ball groove, and the fixing ball abuts in the ball groove.

[0012] Optionally, the hopper door is provided with a threaded hole that passes through the cavity, and a second rotating rod is rotatably provided on the handle. A threaded pin is threadedly connected to the second rotating rod, and the threaded pin is used in conjunction with the threaded hole.

[0013] Optionally, the cavity may also be provided with a groove for use with the first rotating rod.

[0014] Optionally, the diameter of the opening of the fifth through hole near the fixing pin is smaller than the diameter of the fixing ball.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model features overlapping first and second through holes in the rear bucket and bucket door, respectively, with a fixing pin passing through both holes to achieve locking and limiting. The linear motion locking structure between the fixing pin and the pin hole replaces the traditional snap-fit ​​connection. This design utilizes the rigid linear engagement of the pin body and the pin hole, significantly reducing the accumulation area of ​​rainwater and dust from the external environment compared to the surface contact structure of traditional snap-fits, thus structurally avoiding corrosion and jamming problems caused by long-term exposure. The linear motion engagement also reduces frictional resistance, making the locking process smoother and effectively improving the reliability and service life of the mechanism.

[0017] Meanwhile, the hopper of this invention features a cavity to accommodate a first rotating rod. This rod is rotatably mounted within the cavity via a fixed base. A groove is formed on the rod body, allowing it to slide smoothly into the shaft of a fixed pin. When the operating handle moves the first rotating rod, the rotational kinetic energy is converted into linear translational motion of the fixed pin using the lever principle. This allows the operator to apply only a small force to drive the fixed pin to complete the insertion and removal action, significantly improving operational comfort.

[0018] Furthermore, the hopper of this invention features a threaded hole that penetrates the cavity. The second rotating rod, rotatably connected to the handle, engages with this hole via a threaded pin. When the fixing pin moves to the locked position, rotating the threaded pin into the threaded hole securely locks both the second and first rotating rods within the cavity. This design uses mechanical locking to prevent the handle from loosening due to vibration, ensuring the fixing pin remains engaged throughout transportation, thus enhancing the structural stability and safety.

[0019] Finally, this invention also includes a fixing part that is rigidly connected to a fixing pin via a limiting rod, and a magnetic part that adheres to the rear bucket and fixes the limiting rod, forming a vertical limiting constraint. This effectively prevents the bucket door from opening accidentally during cargo transportation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the locking structure of the rear bed of an electric tricycle according to the present invention.

[0022] Figure 2 This is a partially exploded schematic diagram of the locking structure of the rear bed of an electric tricycle according to the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of the locking structure of the rear bed of an electric tricycle according to this utility model.

[0024] Figure 4 This utility model relates to a locking structure for the rear bed of an electric tricycle. Figure 2 Enlarged view of point A in the middle.

[0025] Figure 5 This utility model relates to a locking structure for the rear bed of an electric tricycle. Figure 3 Enlarged view of point B in the middle.

[0026] Figure 6 This utility model relates to a locking structure for the rear bed of an electric tricycle. Figure 2 A magnified view of point C in the middle.

[0027] Figure 7 This is a simplified schematic diagram of a partial movement of the locking structure of the rear bed of an electric tricycle according to this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Rear bucket; 11. Fixing part; 12. Fixing ball; 2. Bucket door; 21. Slot; 22. Cavity; 221. Protrusion; 3. Magnetic suction part; 31. Top ball rod; 32. Limiting rod; 4. Fixing pin; 41. First rotating rod; 411. Slide groove; 42. Fixing seat; 43. Handle; 44. Second rotating rod; 45. Threaded pin; 46. Rotating shaft; 47. Ball groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] As mentioned earlier, traditional latch connection structures have significant drawbacks. Because the latch components are constantly exposed to the complex external environment, they are susceptible to corrosion from rainwater, dust, and corrosive substances, leading to rust. Over time, rust can cause the latch mechanism to jam, making opening and closing difficult, severely impacting ease of use and reliability.

[0032] Therefore, this utility model provides a locking structure for connecting the rear bed and door of an electric tricycle. It improves upon the traditional locking structure, addressing the difficulty in opening and closing due to corrosion, thus solving the aforementioned problem. This utility model solves the problem in the following way.

[0033] Example 1:

[0034] Please refer to the instruction manual appendix. Figures 1 to 6 As shown in the figure, this embodiment provides a locking structure for the rear cargo bed of an electric tricycle. The locking structure includes a rear cargo bed 1 and a door 2 hinged to the rear cargo bed 1. A first through hole is provided on the side of the rear cargo bed 1 near the door 2. A cavity 22 is formed inside the door 2, and second through holes are formed on both sides of the door 2 at positions corresponding to the first through hole. The second through holes communicate with the cavity 22. When the door 2 is not folded (i.e., in the loaded installation state), the first and second through holes overlap and communicate. A fixing pin 4 is located inside the cavity 22. When locking is required, half of the fixing pin 4 is engaged in the first through hole, and the other half is engaged in the second through hole, thereby restricting the folding movement of the door 2 and achieving the locking purpose.

[0035] like Figures 3 to 5As shown, in this embodiment, a first rotating rod 41 is provided inside the cavity 22. The first rotating rod 41 is rotatably connected to the inside of the cavity 22 via a fixed seat 42. A groove 411 is provided at one end of the first rotating rod 41 near the fixed pin 4. A rotating shaft 46 is fixed at one end of the fixed pin 4 near the first rotating rod 41. The rotating shaft 46 is slidably disposed inside the groove 411 (the groove 411 is a non-circular opening, such as...). Figure 5 As shown, there is space to accommodate the sliding of the rotating shaft 46. At the same time, a handle 43 is fixed on the end of the first rotating rod 41 away from the fixed pin 4, and correspondingly, a groove 21 for the handle 43 to move is provided on the hopper door 2.

[0036] When the operator moves the handle 43 within the groove 21, the first rotating rod 41 rotates around its hinged position with the fixed seat 42. Under the lever principle, the end of the first rotating rod 41 near the fixed pin 4 rotates, thereby causing the fixed pin 4 to move (engage or disengage), thus converting the rotational motion of the first rotating rod 41 into the horizontal translational motion of the fixed pin 4. During this process, the rotating shaft 46 slides within the slide groove 411 to accommodate the translational movement of the fixed pin 4, and the cavity 22 is provided with a protrusion 221, such as... Figure 5 As shown, it is used to accommodate the displacement difference of the rod head in the vertical direction during the rotation of the first rotating rod 41.

[0037] Example 2:

[0038] Based on the above embodiments, in order to further clarify and completely explain the technical solutions therein, this utility model also provides an embodiment two. For example... Figures 3 to 5 As shown, in this second embodiment, a fixing part 11 is fixed in the first through hole of the rear bucket 1. The fixing part 11 has a third through hole that runs vertically through its center, and fifth through holes on both sides of the third through hole. The fifth through holes also run vertically through, but the fifth through holes are closer to the fixing pin 4 (e.g., Figure 5 As shown, the diameter of the hole on the side closest to the fixing pin 4 (i.e., the lower part) is smaller than the overall diameter of the first through hole (i.e., it has a constricted opening). The fixing ball 12 is disposed in the fifth through hole, and the diameter of the hole on this side is smaller than the diameter of the fixing ball 12, thus allowing a portion of the fixing ball 12 to contact the fixing pin 4 through this opening (e.g., ...). Figure 4As shown, two ball grooves 47 are provided on the fixed pin 4 corresponding to the fixed ball 12. These two ball grooves 47 are recessed into a part of the fixed pin 4 body, so that it can accommodate the protruding part of the fixed ball 12. At the same time, the edges of the ball grooves 47 are smoothly transitioned. When the fixed pin 4 moves, it can push the fixed ball 12 to a certain extent. By rolling the fixed ball 12, the friction of the fixed pin 4 during the movement is reduced, so that the fixed pin 4 can move and disengage more easily. However, the fixed ball 12 will not disengage from the fifth through hole.

[0039] like Figure 2 , Figure 4 As shown, in this second embodiment, the locking structure also has a magnetic suction part 3. The magnetic suction part 3 has a body, the shape of which is adapted to the notch shape of the rear bucket 1, so that the magnetic suction part 3 can be magnetically attracted to the rear bucket 1 (the rear bucket 1 has a slot at the notch corresponding to the magnetic suction part 3, and the magnetic suction part 3 slides and magnetically attracts into the slot, so that the magnetic suction part 3 can only move up and down relative to the rear bucket 1 and cannot move horizontally). At the lower part of the magnetic suction part 3, a limiting rod 32 corresponding to the third through hole and a top ball rod 31 corresponding to the fifth through hole are provided. At the same time, the fixing pin 4 also has a fourth through hole that overlaps with the third through hole and is used in conjunction with the limiting rod 32.

[0040] Therefore, when the magnetic suction part 3 is magnetically attracted to the rear bucket 1, the limiting rod 32 passes through the third and fourth through holes in sequence, thereby limiting the fixing part 11 and the fixing pin 4 together in the vertical direction. At this time, the fixing pin 4 cannot move in the horizontal direction. At the same time, the ball-top rod 31 also enters the interior of the fifth through hole and abuts against the fixing ball 12, thereby abutting the fixing ball 12 against the ball groove 47, further limiting the horizontal displacement of the fixing pin 4.

[0041] Example 3:

[0042] Based on the above embodiments, in order to further clarify and completely explain the technical solutions therein, this utility model also provides Embodiment Three. For example... Figures 4 to 7 As shown, in this second embodiment, the hopper 2 has a threaded hole that passes through the cavity 22, and a second rotating rod 44 is rotatably mounted on the handle 43. A threaded pin 45 is threadedly connected to the second rotating rod 44, and the threaded pin 45 is used in conjunction with the threaded hole.

[0043] like Figure 7As shown, the groove 21 is arc-shaped. When the fixing pin 4 is in the locked state (the fixing pin 4 is engaged between the first and second through holes, and the limiting rod 32 is engaged in the third and fourth through holes, and the ball-load rod 31 is engaged in the fifth through hole), the handle 43 is located at the end of the arc-shaped groove 21 away from the fixing pin 4. At this time, the second rotating rod 44 is moved so that the threaded pin 45 corresponds to the threaded hole and is screwed in, thus fixing the position of the handle 43. When it is necessary to release the locking state of the fixing pin 4, the threaded pin 45 is screwed out of the threaded hole, and the handle 43 can be moved to slide in the groove 21, so that the first rotating rod 41 rotates around the groove 21. Figure 7 Rotate point a (the hinge position between the first rotating rod 41 and the fixed seat 42) until the handle 43 moves to the other end of the slot 21 (the magnetic suction part 3 needs to be removed before this). At this time, the fixing pin 4 is completely disengaged from the first through hole of the rear bucket 1, and the rear bucket 1 and the bucket door 2 are released from their limits. At this time, the bucket door 2 can be reversed. Then, loading and unloading of goods can be carried out.

[0044] To secure the position of the retaining pin 4, simply screw the threaded pin 45 back into the threaded hole at the end of the aforementioned slot 21. Figure 7 In the state shown (with the locking pin 4 in the locked state), the angle α formed by the line connecting the shaft 46 and the handle 43 (at one end of the slot 21) and the line connecting the shaft 46 and the threaded hole is equal to the angle β formed by the line connecting the other end of the shaft 46 and the slot 21 and the line connecting the shaft 46 and the threaded hole.

[0045] Therefore, in summary, the technical solution of this utility model and its various embodiments, compared with the prior art, have the following advantages, including but not limited to:

[0046] In this invention, the rear bucket 1 and the bucket door 2 are respectively provided with overlapping first and second through holes, and a fixing pin 4 passes through the two holes to achieve locking and limiting. The linear motion locking structure of the fixing pin 4 and the pin hole replaces the traditional snap-fit ​​connection. This design utilizes the rigid linear engagement between the pin body and the pin hole, which significantly reduces the accumulation area of ​​rainwater and dust in the external environment compared to the surface contact structure of traditional snap-fits, structurally avoiding the problem of rust and jamming caused by long-term exposure. The linear motion engagement method also reduces frictional resistance, making the locking process smoother and effectively improving the reliability and service life of the mechanism.

[0047] Meanwhile, the hopper gate 2 of this utility model has a cavity 22 to accommodate the first rotating rod 41. This rod is rotatably mounted within the cavity 22 via a fixed base 42. The first rotating rod 41 has a sliding groove 411 on its body, which slides in cooperation with the rotating shaft 46 of the fixed pin 4. When the operating handle 43 moves the first rotating rod 41, the rotational kinetic energy is converted into linear translational motion of the fixed pin 4 using the lever principle. This allows the operator to apply only a small force to drive the fixed pin 4 to complete the insertion and removal action, significantly improving operational comfort.

[0048] Furthermore, the hopper 2 of this invention has a threaded hole that penetrates the cavity 22. The second rotating rod 44, which is rotatably connected to the handle 43, engages with this hole via a threaded pin 45. When the fixing pin 4 moves to the locked position, rotating the threaded pin 45 into the threaded hole securely locks the second rotating rod 44 and the first rotating rod 41 within the cavity 22. This design prevents the handle 43 from loosening due to vibration through mechanical locking, ensuring that the fixing pin 4 remains engaged during transportation, thus enhancing the structural stability and safety.

[0049] Finally, this utility model also includes a fixing part 11 rigidly connected to a fixing pin 4 via a limiting rod 32, and a magnetic part 3 adsorbing onto the rear bucket 1 and fixing the limiting rod 32, forming a vertical limiting constraint. This effectively prevents the bucket door 2 from accidentally opening during cargo transportation.

[0050] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A locking structure for the rear cargo bed of an electric tricycle, comprising a rear cargo bed (1) and a cargo door (2) hinged to the rear cargo bed (1), characterized in that: The hopper gate (2) and the rear hopper (1) are locked together by a fixing pin (4), and the fixing pin (4) is moved by rotating the first rotating rod (41) set on the hopper gate (2). The hopper gate (2) is also provided with a fixing part (11) for use with the fixing pin (4). The fixing part (11) is connected to the fixing pin (4) by a limiting rod (32).

2. The locking structure for the rear bed of an electric tricycle as described in claim 1, characterized in that, The rear bucket (1) and the bucket door (2) are respectively provided with overlapping first through holes and second through holes, and the fixing pin (4) is engaged between the first through hole and the second through hole.

3. The locking structure for the rear bed of an electric tricycle as described in claim 1, characterized in that, The hopper gate (2) is provided with a cavity (22) for accommodating the first rotating rod (41). The first rotating rod (41) is rotatably disposed in the cavity (22) via a fixed seat (42). The first rotating rod (41) is provided with a sliding groove (411). A rotating shaft (46) is fixed on the fixed pin (4). The rotating shaft (46) is slidably disposed in the sliding groove (411).

4. The locking structure for the rear bed of an electric tricycle as described in claim 3, characterized in that, The first rotating rod (41) is fixedly connected to a handle (43) at one end away from the fixed pin (4). The hopper door (2) is provided with a groove (21) for the handle (43) to move. The groove (21) is connected to the cavity (22).

5. The locking structure for the rear bed of an electric tricycle as described in claim 1, characterized in that, The fixing part (11) is provided with a third through hole, and the fixing pin (4) is provided with a fourth through hole that overlaps with the third through hole. The limiting rod (32) is inserted into the third through hole and the fourth through hole. The limiting rod (32) is fixed on the magnetic suction part (3). The magnetic suction part (3) is magnetically attracted to the rear bucket (1).

6. The locking structure for the rear bed of an electric tricycle as described in claim 5, characterized in that, The fixing part (11) is also provided with a fifth through hole, and a fixing ball (12) is provided in the fifth through hole. The fixing ball (12) passes through the fixing part (11) and abuts against the fixing pin (4). The magnetic suction part (3) is also fixed with a top ball rod (31), which extends into the fifth through hole and abuts against the fixing ball (12).

7. The locking structure for the rear bed of an electric tricycle as described in claim 6, characterized in that, The fixing pin (4) has a ball groove (47) and the fixing ball (12) abuts against the ball groove (47).

8. The locking structure for the rear bed of an electric tricycle as described in claim 4, characterized in that, The hopper door (2) has a threaded hole that passes through the cavity (22). A second rotating rod (44) is rotatably mounted on the handle (43). A threaded pin (45) is threadedly connected to the second rotating rod (44). The threaded pin (45) is used in conjunction with the threaded hole.

9. The locking structure for the rear bed of an electric tricycle as described in claim 3, characterized in that, The cavity (22) is also provided with a groove (221) for use with the first rotating rod (41).

10. The locking structure for the rear bed of an electric tricycle as described in claim 6, characterized in that, The diameter of the opening of the fifth through hole near the fixing pin (4) is smaller than the diameter of the fixing ball (12).

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