A kart body telescopic adjusting device and a kart

Abstract

The utility model discloses a kind of kart vehicle body telescopic adjusting devices and kart. The device is applied to the kart vehicle body with front vehicle support and rear vehicle support, load bar is equipped on front vehicle support, hollow sleeve rod is equipped on rear vehicle support opposite to load bar, load bar can slide in axial direction to change the distance between front and rear vehicle support. Adjusting component includes shell body fixed on front vehicle support, direction conversion structure arranged in shell body and screw rod cooperated with nut and sleeve, direction conversion structure is made of meshing gear set, for converting hand lever rotation into screw rod autorotation and driving vehicle body telescopic;Between load bar and hollow sleeve rod is sliding fit, end portion is equipped with limit structure, and scale mark is set on load bar and / or hollow sleeve rod. The kart using the device can conveniently adjust wheelbase within a certain range, adapt to drivers of different heights, with simple structure, low cost, safe and reliable adjustment.

Description

Technical Field

[0001] This utility model relates to the field of go-kart technology, specifically to a go-kart body telescopic adjustment device and a go-kart. Background Technology

[0002] As a trackless vehicle widely used in recreational activities, basic competitions, and driver training, go-karts directly affect the driver's operating comfort, driving safety, and driving experience due to the adaptability of their vehicle dimensions. In different usage scenarios (such as parent-child amusement, youth competitions, and adult leisure), the height and body shape of drivers vary significantly, resulting in obvious differences in the wheelbase and passenger space requirements of the go-kart in the front-to-back direction.

[0003] Most go-karts currently on the market use a fixed-size design: the front and rear supports are integrated or rigidly connected by bolts, making it impossible to adjust the overall length to suit the driver's needs. This design has several key drawbacks: First, it limits the range of users. For example, go-karts designed for adults are too long for teenage drivers, making them difficult to operate, while go-karts designed for children cannot meet the needs of adults, necessitating the development of multiple body sizes for different groups, increasing production and operating costs. Second, fixed-size bodies are difficult to adapt to diverse usage scenarios. For instance, driving school training requires frequent changes of go-kart sizes to match student body types, reducing teaching efficiency.

[0004] While some high-end go-karts have attempted to adopt adjustable structures, existing adjustment solutions still have significant shortcomings: one type is bolt-removal adjustment, which requires the use of tools such as wrenches to remove the body connecting bolts, adjust the relative positions of the front and rear supports, and then retighten them. This operation is cumbersome and time-consuming (each adjustment takes 5-10 minutes), and the body structure is prone to loosening due to uneven bolt tightening during the adjustment process, posing a safety hazard. The other type is hydraulic or electric drive adjustment, which uses hydraulic rods or motors to extend and retract the body. Although it is convenient to operate, it requires an additional hydraulic system or power supply module, which not only increases the manufacturing cost of the go-kart (more than 30% higher than that of a conventional go-kart) and the overall weight (affecting driving agility), but also has maintenance problems such as hydraulic leakage and motor failure, making it difficult to promote its application in the recreational go-kart field where low cost and lightweight requirements are needed.

[0005] In summary, existing go-kart bodies generally face technical pain points in terms of size adaptability, such as "poor adaptability to fixed sizes", "cumbersome bolt adjustment operation", and "high cost and difficult maintenance of hydraulic / electric adjustment". The industry urgently needs a go-kart body telescopic adjustment solution that is simple in structure, easy to operate manually, low in cost and stable in adjustment, in order to solve the problem of body adaptation for different people and different scenarios. Utility Model Content

[0006] In view of this, to overcome the shortcomings of the existing technology, this utility model provides a go-kart body telescopic adjustment device and a go-kart. The device utilizes a mechanically driven manual adjustment structure, with meshing gear sets as the direction conversion component, a lead screw and nut as the telescopic actuation component, and a guide component consisting of a support rod and a hollow sleeve rod. This allows for rapid body telescopic operation without the need for additional tools, avoiding the cumbersome and time-consuming bolt adjustments and the high cost and maintenance issues of hydraulic / electric adjustments. Simultaneously, the rigid transmission and guide design ensure the stability of the vehicle structure during adjustment, meeting the needs of drivers of different heights and body types, reducing production and operating costs, and improving the applicability and safety of the device in recreational, competitive, and training scenarios.

[0007] To achieve the above objectives, the first aspect of this utility model provides a go-kart body telescopic adjustment device, applicable to a go-kart body with a front support and a rear support.

[0008] The front support is provided with a support rod extending along the front-rear direction of the vehicle body, and the rear support is provided with a hollow sleeve rod arranged opposite to the support rod. The support rod can enter or exit the hollow sleeve rod in its axial direction to change the distance between the front support and the rear support.

[0009] It also includes an adjustment assembly for driving the front support and the rear support to move relative to each other along the axial direction of the support rod. The adjustment assembly includes a hand crank, a direction conversion structure, a lead screw, a nut, a sleeve, and a housing.

[0010] The outer casing is fixedly mounted on the front vehicle bracket and has an internal mounting cavity for accommodating the direction conversion structure. The hand crank and the lead screw are both rotatably supported on the outer casing.

[0011] The nut has an internal thread and is fixedly disposed at the end of the sleeve. The free end of the lead screw is threadedly engaged with the nut and can rotate relative to the nut.

[0012] The direction conversion structure is disposed inside the outer shell and is used to convert the rotation of the hand crank into the rotation of the lead screw;

[0013] When the hand crank is driven to rotate, the direction conversion structure drives the lead screw to rotate. The free end of the lead screw enters or exits the interior of the sleeve along its own axis under the action of the threaded engagement, thereby driving the front vehicle bracket and the rear vehicle bracket to move relative to each other along the axis of the bearing rod and the hollow sleeve, realizing the extension or retraction of the go-kart body.

[0014] Furthermore, the direction conversion structure includes a first gear and a second gear that mesh with each other.

[0015] The first gear is fixed coaxially with the hand crank.

[0016] The second gear is fixed coaxially with the lead screw.

[0017] Both the first gear and the second gear are disposed inside the outer casing.

[0018] The first gear meshes with the second gear to transmit the rotational power of the hand crank to the lead screw, thereby converting the hand crank's rotation into the lead screw's rotation.

[0019] Furthermore, the rotation axis of the first gear intersects with the rotation axis of the second gear and is arranged in a basically perpendicular spatial configuration to realize the steering transmission between the hand-cranked operating plane and the lead screw axis, adapting to the installation space requirements of the go-kart body.

[0020] Furthermore, the sleeve is fixedly mounted on the rear vehicle bracket, and the axis of the sleeve is coaxial with the axes of the bearing rod and the hollow sleeve rod.

[0021] The lead screw is arranged along the axis of the sleeve, and its free end can pass through the nut and enter the interior of the sleeve to ensure that the axial movement of the lead screw is consistent with the extension and retraction direction of the bearing rod.

[0022] Furthermore, the outer circle of the bearing rod and the inner circle of the hollow sleeve rod are in a sliding fit, so as to reduce the frictional resistance during the adjustment process and improve the smoothness of the vehicle body telescopic adjustment while ensuring the bearing strength.

[0023] Furthermore, scale markings are provided on the support rod and / or the hollow sleeve rod, the scale markings being used to indicate the current distance between the front vehicle support and the rear vehicle support, so as to allow for repeated positioning adjustments based on the driver's height or body type.

[0024] Furthermore, a limiting protrusion is provided at the end of the support rod away from the front vehicle bracket.

[0025] The hollow sleeve rod is provided with a limiting ring at one end near the bearing rod.

[0026] The limiting protrusion can abut against the limiting ring to prevent the bearing rod from completely disengaging from the hollow sleeve rod.

[0027] The second aspect of this utility model provides a go-kart, including a chassis, a front support frame, and a rear support frame.

[0028] The front support and the rear support are connected by the go-kart body telescopic adjustment device. The distance between the front support and the rear support can be adjusted manually by the go-kart body telescopic adjustment device to accommodate drivers of different heights and body types.

[0029] The present invention, by adopting the above technical solution, has at least the following beneficial effects:

[0030] In this invention, a guide assembly is formed by a bearing rod and a hollow sleeve rod, and the lead screw, nut, and sleeve are arranged in a direction coaxial with the axis of the bearing rod, so that the direction of vehicle length adjustment is consistent with the direction of main force on the vehicle body. This ensures smooth movement and clear force during adjustment, while reducing the use of additional guide components. The overall structure is simple and compact, requiring no major modification to the existing go-kart platform, and is easy to process, assemble, and promote.

[0031] In this invention, the first and second gears, which mesh with each other, are encapsulated in a housing fixed to the front vehicle bracket. At the same time, the hand crank and the lead screw form a rotatable support on the housing. Direction conversion and torque transmission are achieved by relying on pure mechanical manual transmission. There is no need to use additional tools to disassemble and assemble bolts, nor is there a need to configure a hydraulic system or a power module such as a motor. This solves the problem of cumbersome operation of existing bolt disassembly adjustment, and avoids the defects of high cost and easy failure of hydraulic / electric adjustment. It significantly shortens the adjustment time per operation and reduces manufacturing and maintenance costs.

[0032] In this invention, a sliding fit is used between the support rod and the hollow sleeve rod. At the same time, the limiting protrusion at the end of the support rod and the limiting ring at the opening of the hollow sleeve rod cooperate with each other to effectively prevent the support rod from being pulled out excessively and completely detached during the adjustment process, thereby improving the safety redundancy of the structure. In addition, scale markings are added to the support rod and / or the hollow sleeve rod to facilitate quick and repeated positioning of different wheelbase positions according to the scale, meeting the adjustment convenience and consistency when multiple drivers take turns using the vehicle, and improving the driving experience.

[0033] In this invention, the vehicle body telescopic adjustment device is integrated between the front and rear vehicle supports, so that the overall wheelbase of the go-kart can be continuously adjusted within a predetermined range. A single vehicle can meet the driving needs of people of different heights and body types, such as children, teenagers and adults. There is no need to develop multiple vehicle body specifications, reducing inventory configuration pressure and significantly reducing the overall vehicle production and manufacturing costs as well as site operation costs.

[0034] In this invention, the precise adjustment and reliable locking of the vehicle body length are achieved through rigid transmission via gears, lead screws, and nuts. Employing a purely mechanical manual structure, it does not rely on hydraulic or electric drive units. Under long-term, frequent adjustments and vibration conditions, the adjustment position is less prone to loosening or drifting, effectively ensuring the stability of the overall vehicle structure and its safety. Simultaneously, operators or training institutions can quickly switch vehicle sizes between different drivers, improving vehicle turnover and teaching organization efficiency. Combined with scale markings to record the driver's suitable position, it also enhances the level of service refinement, thereby improving the market competitiveness of go-karts in various scenarios such as leisure and recreation, competitive racing, and driver training. Attached Figure Description

[0035] 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.

[0036] Figure 1 This is a schematic diagram of the go-kart structure of this utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the vehicle body telescopic adjustment device of this utility model. Figure 1 ;

[0038] Figure 3 This is a schematic diagram of the structure of the vehicle body telescopic adjustment device of this utility model. Figure 2 ;

[0039] Figure 4 This is a schematic diagram of the structure of the vehicle body telescopic adjustment device of this utility model. Figure 3 ;

[0040] Figure 5 This is a schematic diagram of the structure of the vehicle body telescopic adjustment device of this utility model. Figure 4 ;

[0041] Figure 6 yes Figure 5 The part is shown in the diagram.

[0042] In the diagram: 1. Bearing rod; 2. Hollow sleeve rod; 3. Hand crank; 4. Lead screw; 5. Sleeve; 6. Outer shell; 7. First gear; 8. Second gear. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0044] Please see Figures 1 to 6 As shown, this embodiment provides a go-kart body telescopic adjustment device, which is applied to a go-kart body with a front support and a rear support.

[0045] The front support is provided with a support rod 1 extending along the front-rear direction of the vehicle body, and the rear support is provided with a hollow sleeve rod 2 arranged opposite to the support rod 1. The support rod 1 can enter or exit the hollow sleeve rod 2 in its axial direction to change the distance between the front support and the rear support. Through the cooperation of the support rod 1 and the hollow sleeve rod 2, the extension and retraction adjustment of the vehicle body in the front-rear direction is carried out along a fixed guide, which helps to ensure the linearity and stability of the adjustment movement.

[0046] It also includes an adjustment assembly for driving the front support and the rear support to move relative to each other along the axial direction of the support rod 1. The adjustment assembly includes a hand crank 3, a direction conversion structure, a lead screw 4, a nut (not shown in the figure), a sleeve 5, and a housing 6.

[0047] The outer shell 6 is fixedly mounted on the front vehicle bracket and forms an installation cavity inside it to accommodate the direction conversion structure. The hand crank 3 and the lead screw 4 are both rotatably supported on the outer shell 6. By arranging the direction conversion structure, the hand crank 3, and the lead screw 4 together inside the outer shell 6, it is convenient for overall assembly and protection, and the overall form of the adjustment mechanism is compact, making it easy to arrange in the limited space of the go-kart.

[0048] The nut has an internal thread and is fixedly installed at the end of the sleeve 5. The free end of the lead screw 4 is threadedly engaged with the nut and can rotate relative to the nut. By utilizing the threaded engagement between the lead screw 4 and the nut, the rotational motion of the hand crank 3 can be reliably converted into linear extension and retraction motion along the axial direction, and the adjustment process is controllable and repeatable.

[0049] The direction conversion structure is located inside the outer shell 6 and is used to convert the rotation of the hand crank 3 into the rotation of the lead screw 4. Through this direction conversion structure, the operator can make adjustments in a more comfortable hand crank direction, while still being able to drive the lead screw 4 to rotate in the required direction, thus taking into account both ergonomic and mechanical layout requirements.

[0050] When the hand crank 3 is driven to rotate, the direction conversion structure causes the lead screw 4 to rotate. The free end of the lead screw 4, under the action of the threaded engagement, enters or exits the sleeve 5 along its own axial direction. This causes the front and rear vehicle supports to move relative to each other along the axial direction of the support rod 1 and the hollow sleeve 2, thus extending or retracting the go-kart body. With this structure, the user only needs to manually crank the hand crank 3 to quickly adjust the wheelbase of the go-kart, without the need for tools or external power, improving ease of use.

[0051] In one embodiment, the direction conversion structure includes a first gear 7 and a second gear 8 that mesh with each other.

[0052] The first gear 7 is coaxially fixed with the hand crank 3.

[0053] The second gear 8 is fixed coaxially with the lead screw 4.

[0054] Both the first gear 7 and the second gear 8 are disposed inside the outer casing 6.

[0055] The first gear 7 meshes with the second gear 8 to transmit the rotational power of the hand crank 3 to the lead screw 4, thereby converting the hand crank 3 into a self-rotating mechanism and the lead screw 4 into a self-rotating mechanism.

[0056] By using gear meshing for steering and torque transmission, reliable meshing of the structure can be achieved while ensuring transmission efficiency, reducing slippage and making the vehicle body extension and retraction adjustment process smoother and more controllable.

[0057] In one implementation, the rotation axis of the first gear 7 and the rotation axis of the second gear 8 are intersected and arranged in a basically perpendicular spatial configuration to realize the steering transmission between the hand-cranked operating plane and the axis of the lead screw 4, thus adapting to the installation space requirements of the go-kart body.

[0058] By arranging the intersecting and basically perpendicular axes as described above, the orientation of the hand crank 3 relative to the vehicle body can be flexibly adjusted, allowing the operator to complete the cranking action in a natural posture. At the same time, it ensures that the lead screw 4 is arranged along the length of the vehicle body, which is conducive to the compact layout of the overall structure.

[0059] In one embodiment, the sleeve 5 is fixedly mounted on the rear vehicle bracket, and the axis of the sleeve 5 is coaxial with the axes of the bearing rod 1 and the hollow sleeve rod 2.

[0060] The lead screw 4 is arranged along the axis of the sleeve 5, and its free end can pass through the nut and enter the interior of the sleeve 5 to ensure that the axial movement of the lead screw 4 is consistent with the extension and retraction direction of the bearing rod 1.

[0061] By using the coaxial arrangement described above, the direction of extension and retraction of the lead screw 4 can be made to coincide with the direction of extension and retraction of the bearing rod 1, thereby avoiding uneven loading or bending stress and improving the rationality of the force distribution and service life of the mechanism during the adjustment process.

[0062] In one embodiment, the outer circle of the bearing rod 1 and the inner circle of the hollow sleeve rod 2 are in a sliding fit to ensure bearing strength while reducing frictional resistance during adjustment and improving the smoothness of vehicle body telescopic adjustment.

[0063] By properly selecting the sliding fit clearance and surface roughness, smooth sliding can be achieved while ensuring load-bearing capacity, which helps users easily adjust the vehicle body length and reduces the occurrence of jamming.

[0064] In one embodiment, a scale mark is provided on the support rod 1 and / or the hollow sleeve rod 2. The scale mark is used to indicate the current distance between the front vehicle support and the rear vehicle support, so as to make repeated positioning adjustments according to the driver's height or body type.

[0065] By setting scale markings, users can intuitively read the current wheelbase position of the vehicle and pre-record the corresponding scale for different drivers, making it easy to quickly restore to the personalized and adapted position later, improving efficiency and experience when multiple users take turns using the vehicle.

[0066] In one implementation method, in this embodiment, the end of the support rod 1 away from the front vehicle bracket is provided with a limiting protrusion.

[0067] The hollow sleeve rod 2 is provided with a limiting ring at one end near the bearing rod 1.

[0068] The limiting protrusion can abut against the limiting ring to prevent the bearing rod 1 from completely disengaging from the hollow sleeve rod 2.

[0069] By cooperating with the limiting protrusion and the limiting ring, a mechanical limit can be formed at the end of the adjustment stroke to prevent the bearing rod 1 from being excessively pulled out, which could lead to structural separation or the risk of falling, and further improve the safety of the device under extreme operating conditions.

[0070] like Figure 1 As shown, this embodiment also provides a go-kart, including a vehicle body, a front support frame, and a rear support frame.

[0071] The front support and the rear support are connected by the go-kart body telescopic adjustment device described in any of the above embodiments. The distance between the front support and the rear support can be adjusted manually by the go-kart body telescopic adjustment device to accommodate drivers of different heights and body types.

[0072] By integrating the aforementioned vehicle body telescopic adjustment device into the overall vehicle structure, the wheelbase of the same go-kart can be flexibly adjusted within a certain range to suit various user groups, including children, teenagers, and adults. This not only improves the applicability and comfort of the vehicle but also helps reduce the production and operating costs associated with multiple vehicle body configurations.

[0073] This embodiment achieves rapid, stable, and visual adjustment of the go-kart's body length without adding a hydraulic or electric system. Through the guiding fit between the bearing rod 1 and the hollow sleeve rod 2, the arrangement of the gear-screw 4 transmission mechanism inside the outer shell 6, the coaxial guidance of the sleeve 5 and the screw 4, the sliding fit, the limiting position, and the scale markings, the embodiment achieves rapid, stable, and visual adjustment of the go-kart's body length. The overall structure is compact, safe, and reliable, and it is suitable for promotion and application in various usage scenarios such as leisure and amusement, competitive games, and driver training.

[0074] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A go-kart body telescopic adjustment device, characterized in that: Applied to go-kart chassis with front and rear supports. The front support is provided with a support rod extending along the front-rear direction of the vehicle body, and the rear support is provided with a hollow sleeve rod arranged opposite to the support rod. The support rod can enter or exit the hollow sleeve rod in its axial direction to change the distance between the front support and the rear support. It also includes an adjustment assembly for driving the front support and the rear support to move relative to each other along the axial direction of the support rod. The adjustment assembly includes a hand crank, a direction conversion structure, a lead screw, a nut, a sleeve, and a housing. The outer casing is fixedly mounted on the front vehicle bracket and has an internal mounting cavity for accommodating the direction conversion structure. The hand crank and the lead screw are both rotatably supported on the outer casing. The nut has an internal thread and is fixedly disposed at the end of the sleeve. The free end of the lead screw is threadedly engaged with the nut and can rotate relative to the nut. The direction conversion structure is disposed inside the outer shell and is used to convert the rotation of the hand crank into the rotation of the lead screw; When the hand crank is driven to rotate, the direction conversion structure drives the lead screw to rotate. The free end of the lead screw enters or exits the interior of the sleeve along its own axis under the action of the threaded engagement, thereby driving the front vehicle bracket and the rear vehicle bracket to move relative to each other along the axis of the bearing rod and the hollow sleeve, realizing the extension or retraction of the go-kart body.

2. The go-kart body telescopic adjustment device as described in claim 1, characterized in that: The direction conversion structure includes a first gear and a second gear that mesh with each other. The first gear is fixed coaxially with the hand crank. The second gear is fixed coaxially with the lead screw. Both the first gear and the second gear are disposed inside the outer casing. The first gear meshes with the second gear to transmit the rotational power of the hand crank to the lead screw, thereby converting the hand crank's rotation into the lead screw's rotation.

3. The go-kart body telescopic adjustment device as described in claim 2, characterized in that: The rotation axis of the first gear intersects with the rotation axis of the second gear and is arranged in a basically perpendicular spatial configuration to realize the steering transmission between the hand-cranked operating plane and the lead screw axis, adapting to the installation space requirements of the go-kart body.

4. The go-kart body telescopic adjustment device as described in claim 2, characterized in that: The sleeve is fixedly mounted on the rear vehicle bracket, and the axis of the sleeve is coaxial with the axes of the bearing rod and the hollow sleeve rod. The lead screw is arranged along the axis of the sleeve, and its free end can pass through the nut and enter the interior of the sleeve to ensure that the axial movement of the lead screw is consistent with the extension and retraction direction of the bearing rod.

5. The go-kart body telescopic adjustment device as described in claim 4, characterized in that: The outer circle of the bearing rod and the inner circle of the hollow sleeve rod are in a sliding fit to ensure bearing strength while reducing frictional resistance during adjustment and improving the smoothness of vehicle body telescopic adjustment.

6. The go-kart body telescopic adjustment device as described in any one of claims 1 to 5, characterized in that: The support rod and / or the hollow sleeve rod are provided with scale markings, which are used to indicate the current distance between the front vehicle support and the rear vehicle support, so as to allow for repeated positioning adjustments according to the driver's height or body type.

7. The go-kart body telescopic adjustment device as described in any one of claims 1 to 5, characterized in that: The end of the support rod away from the front vehicle bracket is provided with a limiting protrusion. The hollow sleeve rod is provided with a limiting ring at one end near the bearing rod. The limiting protrusion can abut against the limiting ring to prevent the bearing rod from completely disengaging from the hollow sleeve rod.

8. A go-kart, characterized in that: Including the vehicle body, front support frame, and rear support frame. The front support and the rear support are connected by a go-kart body telescopic adjustment device as described in any one of claims 1 to 7. The distance between the front support and the rear support can be adjusted manually by the go-kart body telescopic adjustment device to accommodate drivers of different heights and body types.

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