Pull traction device of electric tricycle
By designing a buffer and limiting structure for the towing device of an electric tricycle trailer, the problems of easy pin detachment and start-stop impact were solved, thus achieving effective protection for the towed object.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-07
AI Technical Summary
Existing electric tricycle towing devices cannot effectively buffer and protect the towed object during start-up and stop, and the pin connection is prone to falling off, resulting in impact damage.
An electric tricycle towing device was designed, comprising a fixed base, a buffer mechanism, a pin limiting sleeve, and an elastic locking mechanism. The buffer structure and the elastic locking mechanism protect the pin and prevent it from falling off, thus achieving buffer protection.
It effectively prevents the pin from falling off during the start-stop process of the tricycle, provides buffer protection for the towed object, and reduces impact damage.
Smart Images
Figure CN224089975U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tricycle trailer technology, specifically to an electric tricycle trailer traction device. Background Technology
[0002] Electric tricycles are categorized into three types based on their intended use: household, freight, and factory. With their versatility, maneuverability, and low price, they are widely used in short-distance transportation in households, urban and rural areas, individual rentals, factories, mines, sanitation, and community cleaning. Currently, the towing end for towing cargo on electric tricycles is typically welded directly to the rear beam of the tricycle's cargo box. When towing an object, the towing end of the object is directly fixed to the towing end at the rear of the tricycle using a pin. This method results in frequent starts and stops of the tricycle during actual use, failing to provide cushioning protection for the towing object and causing impact to the towing end. Furthermore, the traditional pin connection method is problematic. Therefore, this paper proposes an electric tricycle towing device to solve these problems. Utility Model Content
[0003] To solve the problems mentioned above, the technical solution adopted by this utility model is: an electric tricycle towing device, comprising: a fixed seat, a buffer mechanism connected to the middle of one end of the fixed seat, a first traction seat connected to the fixed seat through the buffer mechanism, a shaft provided at one end of the first traction seat, a second traction seat movably connected to the first traction seat through the shaft, a pin passing through one end of the second traction seat, a limit sleeve provided on the bottom side of the second traction seat at one end of the pin, and an elastic locking mechanism inside the limit sleeve facing the pin.
[0004] As a preferred embodiment of the present invention, the buffer mechanism includes a sheath, a connecting rod, and a slider. The connecting rod is slidably connected to one end of the sheath located inside the first traction seat, and the slider is connected to one end of the connecting rod located inside the sheath.
[0005] As a preferred embodiment of this utility model, a first spring is sleeved at one end of the connecting rod inside the sheath, and a second spring is provided at one end of the slider inside the sheath, with the slider slidably connected to the inner wall of the sheath.
[0006] As a preferred technical solution of this utility model, the elastic locking mechanism includes a sliding groove, a third spring, and a locking ball. The sliding groove is opened inside one side of the limiting sleeve, the third spring is disposed inside the sliding groove, and the locking ball is disposed inside one end of the sliding groove.
[0007] As a preferred technical solution of this utility model, the pin has an annular notch on the outer circumference of one end of the ball, the ball is engaged inside the annular notch, and the pin passes through the limiting sleeve.
[0008] As a preferred embodiment of this utility model, the fixing seat is provided with a fixing hole at the corner, a U-shaped rod passes through the fixing hole, and a nut is threadedly connected to the end of the U-shaped rod through the fixing hole.
[0009] As a preferred technical solution of this utility model, the fixed seat is connected to the tricycle binding frame by a U-shaped rod, and both the first traction seat and the second traction seat are U-shaped structures.
[0010] This utility model has the following advantages: After the end to be towed is connected to the second traction seat by a pin, the pin can be limited by the elastic locking mechanism, thereby effectively avoiding the situation where the pin falls off due to the bumps during the tricycle's movement.
[0011] When the tricycle is towed or braked, the slider in the buffer structure compresses the first or second spring, which can effectively buffer and protect the towed object and the towing device. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the connection structure between the towing device and the tricycle tie-down frame in a preferred embodiment of this utility model;
[0013] Figure 2 This is a schematic diagram of the disassembled structure of the trailer traction device according to a preferred embodiment of the present invention;
[0014] Figure 3 This is a schematic cross-sectional view of the sheath structure according to a preferred embodiment of the present invention;
[0015] Figure 4 This is a schematic cross-sectional view of the limiting sleeve according to a preferred embodiment of the present invention.
[0016] Explanation of reference numerals in the attached drawings: 1. Fixing seat; 2. Fixing hole; 3. U-shaped rod; 4. Protective sleeve; 5. Connecting rod; 6. Slider; 7. First spring; 8. Second spring; 9. First traction seat; 10. Shaft; 11. Second traction seat; 12. Pin; 13. Limiting sleeve; 14. Slide groove; 15. Third spring; 16. Clamping ball; 17. Annular bayonet; 18. Tricycle binding frame. Detailed Implementation
[0017] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] The present invention will be further described below with reference to the accompanying drawings.
[0020] Please refer to the following: Figures 1-4 This utility model discloses an electric tricycle towing device, comprising: a fixed seat 1, a buffer mechanism connected to the middle of one end of the fixed seat 1, a first traction seat 9 connected to the fixed seat 1 through the buffer mechanism, a shaft 10 provided at one end of the first traction seat 9, a second traction seat 11 movably connected to the first traction seat 9 through the shaft 10, a pin 12 passing through one end of the second traction seat 11, a limit sleeve 13 provided on the bottom side of one end of the second traction seat 11 at the pin 12, and an elastic locking mechanism inside the limit sleeve 13 facing the pin 12.
[0021] Combination Figure 2 and Figure 3 As shown, the buffer mechanism includes a sleeve 4, a connecting rod 5, and a slider 6. The sleeve 4 is slidably connected to the connecting rod 5 inside one end of the first traction seat 9. The connecting rod 5 is connected to the slider 6 inside the sleeve 4. The slider 6 not only facilitates the compression of the first spring 7 and the second spring 8, but also prevents the connecting rod 5 from coming out of the sleeve 4. The first spring 7 is sleeved on the connecting rod 5 inside the sleeve 4. The second spring 8 is provided inside the sleeve 4 at the end that fits against the slider 6. The slider 6 is slidably connected to the inner wall of the sleeve 4, combined with... Figure 4As shown, the elastic locking mechanism includes a slide groove 14, a third spring 15, and a locking ball 16. The slide groove 14 is opened inside one side of the limiting sleeve 13, the third spring 15 is disposed inside the slide groove 14, and the locking ball 16 is disposed inside one end of the slide groove 14.
[0022] Among them, the pin 12 is provided with an annular slot 17 on the outer circumference of one end of the ball 16, and the ball 16 is engaged inside the annular slot 17. The pin 12 passes through the limiting sleeve 13. The fixing seat 1 is provided with a fixing hole 2 at the corner. A U-shaped rod 3 passes through the fixing hole 2. A nut is threaded through the end of the U-shaped rod 3 through the fixing hole 2. The fixing seat 1 is engaged with the tricycle binding frame 18 through the U-shaped rod 3. Both the first traction seat 9 and the second traction seat 11 are U-shaped structures.
[0023] Specifically, when using this utility model, firstly, the U-shaped rod 3 on the towing device is clipped onto the tricycle binding frame 18. Then, the fixing hole 2 on the fixing seat 1 is inserted through the end of the U-shaped rod 3 and the end is tightened with a nut. Subsequently, the towing end of the object to be towed is placed on the second towing seat 11, and the pin 12 is inserted through the second towing seat 11 and the towing end, so that the annular retaining hole 17 on the pin 12 is clipped onto the retaining ball 16. After the connection is completed, when the tricycle is towing or braking, the slider 6 in the buffer structure squeezes the first spring 7 or the second spring 8 accordingly, thereby starting and stopping the tricycle during the towing process, which can effectively buffer and protect the towed object and the towing device.
[0024] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
[0025] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An electric tricycle trailer traction device, characterized in that, include: A fixed seat (1) is provided with a buffer mechanism at one end of the fixed seat (1). The fixed seat (1) is connected to a first traction seat (9) through the buffer mechanism. A shaft (10) is provided at one end of the first traction seat (9). A second traction seat (11) is movably connected to the first traction seat (9) through the shaft (10). A pin (12) passes through one end of the second traction seat (11). A limit sleeve (13) is provided on the bottom side of one end of the second traction seat (11) at the pin (12). An elastic locking mechanism is provided inside the limit sleeve (13) facing the pin (12).
2. The electric tricycle trailer traction device as described in claim 1, characterized in that, The buffer mechanism includes a sheath (4), a connecting rod (5), and a slider (6). The sheath (4) is slidably connected to the connecting rod (5) at one end of the first traction seat (9), and the connecting rod (5) is connected to the slider (6) at one end inside the sheath (4).
3. The electric tricycle trailer traction device as described in claim 2, characterized in that, The connecting rod (5) is fitted with a first spring (7) at one end inside the sheath (4), and a second spring (8) is provided at one end of the slider (6) inside the sheath (4). The slider (6) is slidably connected to the inner wall of the sheath (4).
4. The electric tricycle trailer traction device as described in claim 1, characterized in that, The elastic locking mechanism includes a slide groove (14), a third spring (15), and a locking ball (16). The slide groove (14) is opened inside one side of the limiting sleeve (13), the third spring (15) is disposed inside the slide groove (14), and the locking ball (16) is disposed inside one end of the slide groove (14).
5. The electric tricycle trailer traction device as described in claim 1, characterized in that, The pin (12) has an annular notch (17) on the outer circumference of one end of the ball (16), the ball (16) is engaged inside the annular notch (17), and the pin (12) passes through the limiting sleeve (13).
6. The electric tricycle trailer traction device as described in claim 1, characterized in that, The fixing seat (1) has a fixing hole (2) at the corner, through which a U-shaped rod (3) passes, and the end of the U-shaped rod (3) is threaded through the fixing hole (2) and connected to a nut.
7. The electric tricycle trailer traction device as described in claim 1, characterized in that, The fixed seat (1) is connected to the tricycle tie-down frame (18) by a U-shaped rod (3), and both the first traction seat (9) and the second traction seat (11) are U-shaped structures.