Speed-adjustable trolley convenient to operate

Abstract

The utility model belongs to the technical field of trolleys, and particularly relates to a speed-adjustable trolley convenient to operate, which comprises a cargo carrying panel, a movable chassis and a driving mechanism are mounted at the bottom of the cargo carrying panel, and a motor for driving a device to move is further arranged in the driving mechanism. A handle used for achieving grabbing is arranged above the cargo carrying panel, a speed adjusting module used for controlling the rotating speed of a motor in the driving mechanism is installed on the handle and comprises a limiting inner shaft fixedly installed on the handle, a threading hole is formed in the limiting inner shaft, and a wire connected with an electric signal in the driving mechanism is arranged in the threading hole. According to the speed-adjustable trolley convenient to operate, the speed adjusting module is integrated on the handle and used for controlling the motor in the driving mechanism, and compared with a traditional speed adjuster, the speed adjusting module is integrated into the handle of the trolley, so that the design is simple and attractive, and the operation convenience and the equipment practicability are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of handcart technology, and in particular to an easy-to-operate adjustable speed handcart. Background Technology

[0002] Many modern trolleys are designed to be foldable for easy storage and transport, making them especially suitable for small spaces or mobile use. Some trolleys also integrate multiple functions, such as tool storage and insulation, making them suitable for various scenarios, including gardening, shopping, and industrial transport. To facilitate effortless movement and increase load capacity, motor-driven casters are usually installed at the bottom of the trolley's platform.

[0003] However, in order to control the speed of the handcart, a speed controller to control the motor speed is usually installed on the handcart. But existing speed controllers are usually mounted on the handle of the handcart with a bracket, which is bulky and exposed. This not only affects the overall aesthetics of the device, but also makes it inconvenient to use. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide an easy-to-operate adjustable speed handcart, so as to solve the technical problem that the existing speed controller is usually mounted on the handle of the handcart by a bracket, which is large in size and exposed, which not only affects the overall aesthetics of the device, but also makes the use process inconvenient.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An easy-to-operate adjustable speed handcart includes a cargo panel, a movable chassis and a drive mechanism mounted on the bottom of the cargo panel, and an electric motor for moving the drive mechanism. A handle for gripping is provided above the cargo panel, and a speed control module for controlling the speed of the electric motor in the drive mechanism is mounted on the handle. The speed control module includes a limiting inner shaft fixedly mounted on the handle, a wire hole in the limiting inner shaft, and a wire connected to an electrical signal in the drive mechanism.

[0008] As an improved technical solution, one end of the inner limiting shaft is movably connected to the outer limiting shaft, and a torsion spring is provided between the threading hole and the outer limiting shaft, with the two ends of the torsion spring connected to the inner limiting shaft and the outer limiting shaft respectively.

[0009] As an improved technical solution, the end of the limiting inner shaft away from the limiting outer shaft is provided with an adjusting shaft, the end of the limiting inner shaft extending into the adjusting shaft is provided with a limiting ring groove for realizing the limiting rotation of the adjusting shaft, and the end of the limiting inner shaft extending into the adjusting shaft is provided with a limiting protrusion that matches the limiting ring groove.

[0010] As an improved technical solution, the inner limiting shaft is provided with anti-slip sleeves along the axial direction of the handle, and the outer limiting shaft is connected to the adjusting shaft through the anti-slip sleeves. The outer side of the anti-slip sleeves is provided with anti-slip textures along the axial direction.

[0011] As an improved technical solution, a direction control module is installed on the outside of the speed control module and along the axial direction of the handle. A support is fixedly installed at the bottom of the direction control module, and a buckle connected to the handle by screws is provided below the support.

[0012] As an improved technical solution, an electric wheel seat is fixedly installed at the bottom of the cargo panel. The electric wheel seats are symmetrically distributed on both sides of the cargo panel. Each electric wheel seat has an electric wheel body that is connected to the drive mechanism. The end of the mobile chassis away from the electric wheel seat is provided with symmetrically distributed rotating wheel seats. Each rotating wheel seat is provided with a steering wheel body for controlling the direction. The rotating wheel seat is also provided with a locking pedal for limiting the rotation of the steering wheel body.

[0013] As an improved technical solution, the mobile chassis has symmetrically distributed positioning seats fixedly installed at one end near the wheel seat and at the top of the cargo panel. A connecting rod corresponding to the positioning seat is also provided above the cargo panel. The inner side of the positioning seat is also provided with a positioning hoop that matches the connecting rod. One end of the connecting rod extending outside the positioning hoop is connected to both ends of the handle. The connecting rod is also provided with a baffle for restricting the cargo.

[0014] As an improved technical solution, the inner side of the positioning seat is also provided with an arc-shaped adjustment groove, and the adjustment groove is provided with a stop bar that is adapted to restrict the movement of the connecting rod.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model integrates a speed control module on the handle to control the motor in the drive mechanism. Compared with traditional speed controllers, integrating the speed control module into the handle of the handcart not only achieves a simple and beautiful design, but also significantly improves the convenience of operation and the practicality of the equipment.

[0017] 2. In this utility model, the steering wheel body is controlled by the steering module. The steering wheel body is installed on the wheel seat. The direction can be fixed by locking the pedal to prevent the handcart from turning on its own on a flat road. The steering module is fixed to the handle by the support and buckle to ensure the stability of the direction control.

[0018] 3. This utility model, through the combined action of the positioning seat, connecting rod, positioning clamp and baffle, makes the handcart more stable when carrying heavy objects, preventing the goods from sliding or tipping over. The adjustment groove and baffle on the positioning seat allow for fine adjustment of the position of the connecting rod to accommodate goods of different sizes, ensuring flexibility and adaptability during transportation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them:

[0020] Figure 1 This is a three-dimensional structural diagram of the adjustable speed handcart of this utility model, which is easy to operate.

[0021] Figure 2 This is a schematic diagram of the assembled mobile chassis and drive mechanism of the adjustable speed handcart of this utility model, which is easy to operate.

[0022] Figure 3 This is a schematic diagram of the assembled speed control module and direction control module of the adjustable speed handcart of this utility model, which is easy to operate.

[0023] Figure 4 This utility model Figure 1 A magnified structural diagram of part A.

[0024] Figure 5 This utility model Figure 3 A magnified structural diagram of part B.

[0025] Figure 6 This is a schematic diagram of the speed control module structure of the easy-to-operate adjustable speed handcart of this utility model.

[0026] Figure 7 This is a cross-sectional view of the speed adjustment mechanism of the adjustable speed handcart of this utility model, which is easy to operate.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Cargo panel; 2. Mobile chassis; 3. Drive mechanism; 4. Handle; 5. Inner limiting shaft; 6. Cable hole; 7. Outer limiting shaft; 8. Torsion spring; 9. Adjusting shaft; 10. Limiting ring groove; 11. Limiting protrusion; 12. Anti-slip sleeve; 13. Direction control module; 14. Support; 15. Buckle; 16. Electric wheel seat; 17. Electric wheel body; 18. Rotary wheel seat; 19. Steering wheel body; 20. Locking pedal; 21. Positioning seat; 22. Connecting rod; 23. Positioning clamp; 24. Baffle; 25. Adjustment groove; 26. Stop bar. Detailed Implementation

[0029] 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.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0032] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] like Figures 1 to 5As shown in the figure, this embodiment provides an easy-to-operate adjustable speed handcart. This easy-to-operate adjustable speed handcart includes a cargo panel 1, a movable chassis 2 and a drive mechanism 3 mounted on the bottom of the cargo panel 1, and a motor for driving the movement of the drive mechanism 3. A handle 4 for gripping is provided on the top of the cargo panel 1, and a speed control module for controlling the speed of the motor in the drive mechanism 3 is mounted on the handle 4. The speed control module includes a limiting inner shaft 5 fixedly mounted on the handle 4, and a wire hole 6 is provided in the limiting inner shaft 5. A wire connected to the electrical signal in the drive mechanism 3 is provided in the wire hole 6. The cargo panel 1, as the main load-bearing part, is equipped with a bottom... The mobile chassis 2 and drive mechanism 3 ensure the stability and power performance of the handcart. The drive mechanism 3 has a built-in electric motor that provides power for the handcart to move forward and backward. The handle 4 is not only easy for the operator to grip, but also integrates a speed control module, allowing the operator to flexibly control the speed of the electric motor, thereby adjusting the speed of the handcart. The speed of the output shaft of the motor 3 is controlled by changing the current after passing through the resistance of the potentiometer in the limit inner shaft 5 through the wire connected to the motor 3 in the limit inner shaft 5. By integrating the speed control module into the handle 4 of the handcart, the appearance is more streamlined and protruding parts are reduced. For the specific speed control principle, refer to the speed control grip of the electric vehicle in the prior art, which will not be elaborated in detail.

[0034] One end of the inner limiting shaft 5 is movably connected to the outer limiting shaft 7. A torsion spring 8 is provided between the wire hole 6 and the outer limiting shaft 7. The two ends of the torsion spring 8 are connected to the inner limiting shaft 5 and the outer limiting shaft 7. The outer limiting shaft 7 can rotate outside the handle 4 under the restriction of the inner limiting shaft 5. The torsion spring 8 can provide a restoring torque related to the speed change through its mechanical characteristics, thereby helping the outer limiting shaft 7 to reset.

[0035] An adjusting shaft 9 is provided at one end of the inner limiting shaft 5 away from the outer limiting shaft 7. A limiting ring groove 10 is provided at one end of the inner limiting shaft 5 extending into the adjusting shaft 9 to achieve the limiting rotation of the adjusting shaft 9. The cooperation between the limiting ring groove 10 and the limiting protrusion 11 ensures the limiting effect of the adjusting shaft 9 during rotation, avoiding damage to the internal structure caused by excessive rotation. This ingenious design not only improves the adjustment accuracy of the speed control module, but also enhances its reliability in complex environments, ensuring that the handcart can operate stably under various working conditions.

[0036] The inner limiting shaft 5 is provided with anti-slip sleeves 12 along the axial direction of the handle 4, and the outer limiting shaft 7 is connected to the adjusting shaft 9 through the anti-slip sleeves 12. The outer side of the anti-slip sleeves 12 is provided with anti-slip textures along the axial direction. The anti-slip sleeves 12 not only enhance the grip stability of the speed control module, but also effectively prevent slippage caused by hand sweat or moisture during operation through the anti-slip texture design on its outer side. This design improves the safety of operation while also taking into account the user experience, so that the speed control module can maintain good operating performance under various environmental conditions.

[0037] A directional control module 13 is installed on the outside of the speed control module and along the axial direction of the handle 4. A support 14 is fixedly installed at the bottom of the directional control module 13, and a buckle 15 connected to the handle 4 by screws is provided below the support 14. The introduction of the directional control module 13 provides a strong guarantee for the directional control of the handcart. The design of the support 14 and buckle 15 at the bottom ensures a stable connection between the directional control module 13 and the handle 4. The buckle 15 fixed by screws not only facilitates installation and disassembly, but also ensures reliability during use and avoids displacement of the directional control module 13 due to vibration or impact, thereby ensuring the directional stability and operational accuracy of the handcart during travel.

[0038] An electric wheel seat 16 is fixedly installed at the bottom of the cargo panel 1. The electric wheel seats 16 are symmetrically distributed on both sides of the cargo panel 1. Each electric wheel seat 16 has an electric wheel body 17 that is connected to the drive mechanism 3. The end of the mobile chassis 2 away from the electric wheel seats 16 has symmetrically distributed rotating wheel seats 18, and each rotating wheel seat 18 has a steering wheel body 19 for controlling direction. The rotating wheel seat 18 also has a locking pedal 20 for limiting the rotation of the steering wheel body 19. The symmetrical distribution of the electric wheel seats 16 and the electric wheel bodies 17 ensures the balance of the handcart during travel. The transmission connection between the electric wheel body 17 and the drive mechanism 3 makes power transmission more efficient and improves the driving performance of the handcart. The setting of the steering wheel body 19 and the locking pedal 20 on the rotating wheel seat 18 not only allows the handcart to turn flexibly when needed, but also can fix the direction when stationary by locking the pedal 20 to prevent accidental slippage, ensuring safety and convenience of use.

[0039] A symmetrically distributed positioning seat 21 is fixedly installed on the top of the cargo panel 1 near the end of the mobile chassis 2 close to the wheel seat 18. A connecting rod 22 corresponding to the positioning seat 21 is also provided above the cargo panel 1. A positioning clamp 23 adapted to the connecting rod 22 is provided on the inner side of the positioning seat 21. The end of the connecting rod 22 extending outside the positioning clamp 23 is connected to both ends of the handle 4. The connecting rod 22 also has a baffle 24 for restricting cargo. The symmetrical distribution of the positioning seat 21 and the connecting rod 22 not only enhances the connection stability between the cargo panel 1 and the mobile chassis 2, but also ensures the precise positioning of the connecting rod 22 through the positioning clamp 23. The connection between the connecting rod 22 and the handle 4 makes it easier for the operator to control the trolley during use. The baffle 24 effectively prevents the cargo from sliding or tipping over during transportation, improving the safety and reliability of cargo transportation.

[0040] The inner side of the positioning seat 21 is also provided with an arc-shaped adjustment groove 25, and the adjustment groove 25 is provided with a stop bar 26 that is adapted to limit the movement of the connecting rod 22. The ingenious design of the adjustment groove 25 and the stop bar 26 effectively controls the range of motion of the connecting rod 22. The arc-shaped adjustment groove 25 not only provides sufficient adjustment space, but also limits the excessive movement of the connecting rod 22 through the stop bar 26, ensuring the stability of the handcart during use.

[0041] First, the operator grips handle 4 and controls the motor in drive mechanism 3 via a speed control module integrated on handle 4. Compared to traditional speed controllers, integrating the speed control module into the handle 4 of the handcart not only achieves a simple and aesthetically pleasing design but also significantly improves operational convenience and equipment practicality. After the motor starts, it drives the handcart forward through the electric wheel seat 16 and the electric wheel body 17. The inner limit shaft 5 and the outer limit shaft 7 in the speed control module are connected by a torsion spring 8 to ensure smooth speed adjustment and prevent sudden speed changes. When a change of direction is required, the operator controls the steering wheel body 19 through the direction control module 13. The steering wheel body 19 is mounted on the wheel seat. On 18, the direction can be fixed by locking the pedal 20 to prevent the handcart from turning on its own on a flat road. The steering module 13 is fixed to the handle 4 by the support 14 and the buckle 15 to ensure the stability of the direction control. The cargo panel 1 is connected to the drive mechanism 3 through the movable chassis 2 to ensure the stability of the goods during transportation. The positioning seat 21, the connecting rod 22, the positioning hoop 23 and the baffle 24 work together to make the handcart more stable when carrying heavy objects and prevent the goods from sliding or tipping. In addition, the adjustment groove 25 and the baffle 26 on the positioning seat 21 allow the position of the connecting rod 22 to be finely adjusted to accommodate goods of different sizes, ensuring flexibility and adaptability during transportation.

[0042] The specific principle of the speed control module is based on the existing technology of controlling the speed of electric bicycle handlebars, and can be summarized as follows:

[0043] 1. User operation: The user rotates the handle to change the rotation angle of the potentiometer.

[0044] 2. Signal conversion: The rotation angle of the potentiometer is converted into a corresponding change in resistance value.

[0045] 3. Signal transmission: The change in resistance value is detected by the controller and converted into a control signal.

[0046] 4. Motor control: The controller adjusts the power supply voltage or current of the motor according to the received signal, thereby changing the motor speed.

[0047] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An easy-to-operate adjustable speed handcart, comprising a cargo panel (1), characterized in that: The bottom of the cargo panel (1) is equipped with a mobile chassis (2) and a drive mechanism (3). The drive mechanism (3) is also equipped with a motor for driving the device to move. The top of the cargo panel (1) is equipped with a handle (4) for gripping. The handle (4) is equipped with a speed control module for controlling the speed of the motor in the drive mechanism (3). The speed control module includes a limiting inner shaft (5) fixedly installed on the handle (4). The limiting inner shaft (5) is provided with a wire hole (6). The wire hole (6) is provided with a wire connected to the electrical signal in the drive mechanism (3).

2. The easy-to-operate adjustable speed handcart according to claim 1, characterized in that: One end of the inner limiting shaft (5) is movably connected to the outer limiting shaft (7), and a torsion spring (8) is provided between the thread hole (6) and the outer limiting shaft (7). The two ends of the torsion spring (8) are respectively connected to the inner limiting shaft (5) and the outer limiting shaft (7).

3. The easy-to-operate adjustable speed handcart according to claim 2, characterized in that: The inner shaft (5) of the limiting shaft (5) is provided with an adjusting shaft (9) at one end away from the outer shaft (7). The inner shaft (5) of the limiting shaft (5) extends into the adjusting shaft (9) and is provided with a limiting ring groove (10) for limiting the rotation of the adjusting shaft (9). The inner shaft (5) of the limiting shaft (5) extends into the adjusting shaft (9) and is provided with a limiting protrusion (11) that is adapted to the limiting ring groove (10).

4. The easy-to-operate adjustable speed handcart according to claim 3, characterized in that: The inner limiting shaft (5) is provided with anti-slip sleeves (12) along the axial direction of the handle (4), and the outer limiting shaft (7) is connected to the adjusting shaft (9) through the anti-slip sleeves (12). The outer side of the anti-slip sleeves (12) is provided with anti-slip textures along the axial direction.

5. The easy-to-operate adjustable speed handcart according to claim 1, characterized in that: A direction control module (13) is installed on the outside of the speed control module and along the axial direction of the handle (4). A support (14) is fixedly installed at the bottom of the direction control module (13), and a buckle (15) connected to the handle (4) by screws is provided below the support (14).

6. The easy-to-operate adjustable speed handcart according to claim 1, characterized in that: The bottom of the cargo panel (1) is fixedly installed with an electric wheel seat (16). The electric wheel seats (16) are symmetrically distributed on both sides of the cargo panel (1). Each electric wheel seat (16) has an electric wheel body (17) that is connected to the drive mechanism (3) for transmission. The end of the mobile chassis (2) away from the electric wheel seat (16) is provided with a symmetrically distributed wheel seat (18). Each wheel seat (18) is provided with a steering wheel body (19) for controlling the direction. The wheel seat (18) is also provided with a locking pedal (20) for limiting the rotation of the steering wheel body (19).

7. The easy-to-operate adjustable speed handcart according to claim 6, characterized in that: The mobile chassis (2) is fixedly installed with symmetrically distributed positioning seats (21) at one end near the wheel seat (18) and at the top of the cargo panel (1). The cargo panel (1) is also provided with a connecting rod (22) corresponding to the positioning seat (21). The inner side of the positioning seat (21) is also provided with a positioning hoop (23) adapted to the connecting rod (22). The end of the connecting rod (22) extending to the outside of the positioning hoop (23) is connected to both ends of the handle (4). The connecting rod (22) is also provided with a baffle (24) for restricting the cargo.

8. The easy-to-operate adjustable speed handcart according to claim 7, characterized in that: The inner side of the positioning seat (21) is also provided with an arc-shaped adjustment groove (25), and the adjustment groove (25) is provided with a stop bar (26) for limiting the movement of the connecting rod (22) and adapted to the adjustment groove (25).

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