Roller structure
By combining a multi-stage gear transmission system and an anti-braking mechanism, the problem of insufficient inertia in traditional wheels is solved, achieving inertial continuity of motion and a protection mechanism, thereby improving the wheel's performance and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAXING CHUANGJI TRADING CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional wheels lack the ability to continue motion due to inertia after being pushed to a stop, making it impossible to achieve smooth deceleration or energy reuse. Furthermore, they have a complex structure, slow response, and lack effective protection mechanisms.
A multi-stage gear transmission system is used to amplify the spindle speed and transmit it to the turntable. Combined with an anti-braking mechanism, the turntable and gear system are automatically separated during emergency stops to release inertial forces and avoid gear impact and damage.
It achieves inertial continuity of motion capability, smooth transition and energy-saving operation, improves system reliability and service life, and reduces noise and maintenance costs.
Smart Images
Figure CN224408811U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheel device technology, and more specifically to a roller structure. Background Technology
[0002] Wheels, as a common mobile support component, are widely used in furniture, medical devices, logistics equipment, industrial machinery, and daily necessities to enable flexible movement and positioning of equipment or products. Traditional wheels typically consist of a wheel base, a fork, and a wheel, relying on the user's pushing or pulling force to move; their structure is simple and their function is singular.
[0003] In existing technologies, wheels have some common problems during use: First, traditional wheels stop immediately after being pushed, lacking the ability to continue motion due to inertia, and cannot achieve smooth deceleration or energy reuse, resulting in a poor user experience.
[0004] Although some improved wheels have attempted to improve motion continuity by adding reduction mechanisms or flywheel structures, they still generally suffer from problems such as complex structure, slow response, and lack of effective protection mechanisms. Therefore, there is an urgent need in this field for a roller structure with a reasonable structure, efficient transmission, and inertia continuity and emergency stop protection functions to improve overall performance and applicability. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a roller structure that amplifies and transmits the spindle speed to the turntable through a multi-stage gear transmission system. Utilizing the inertia of the turntable, the roller continues to move even after the drive stops, achieving smooth transition and energy-saving operation. Simultaneously, the anti-braking mechanism automatically separates the turntable from the gear system during emergency stops, releasing inertial forces and preventing gear impact and damage, significantly improving the system's reliability and service life.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A roller structure includes a wheel seat, a wheel fork, a wheel, a gear transmission system, and a turntable. The wheel seat is rotatably connected to the wheel fork. A main shaft is mounted on the wheel fork. The wheel is mounted on both sides of the main shaft. The gear transmission system and the turntable are both installed inside the wheel fork, and the turntable is rotatably connected to the wheel fork. The gear transmission system includes at least two sets of gear pairs, and the gear transmission system is connected to the main shaft and the turntable for transmission, respectively.
[0008] Furthermore, the gear transmission system includes a main shaft gear, a first double gear, a second double gear, and a turntable gear. The main shaft gear is mounted on a main shaft, and the turntable gear is connected to a turntable for transmission. The main shaft gear, the first double gear, the second double gear, and the turntable gear mesh and transmit power in sequence.
[0009] Furthermore, a driven shaft is provided inside the wheel fork, and the turntable gear and the turntable are both mounted on the driven shaft. An anti-braking mechanism is provided between the turntable gear and the turntable. The anti-braking mechanism is used to allow the turntable to disengage from the turntable gear and rotate freely after the wheel stops rotating.
[0010] Furthermore, the turntable gear is mounted on the driven shaft and can slide axially and rotate circumferentially. The turntable is rotatably mounted on the driven shaft and located on one side of the turntable gear. A spring is provided on the side of the turntable gear away from the turntable. The spring is mounted on the driven shaft and abuts against the turntable gear. The anti-braking mechanism includes a first retaining ring and a second retaining ring. The first retaining ring is fixedly connected to the turntable gear, and the second retaining ring is fixedly connected to the turntable. Both the first retaining ring and the second retaining ring are provided with a retaining inclined surface. The retaining inclined surfaces of the first retaining ring and the second retaining ring contact and mesh with each other.
[0011] Furthermore, the wheel seat is provided with a first rotating hole, the wheel fork is provided with a second rotating hole, and the wheel seat is provided with a rotating shaft between the wheel fork, with the two ends of the rotating shaft respectively installed in the first rotating hole and the second rotating hole.
[0012] Furthermore, the wheel includes a hub, a rubber-coated wheel skin, and a wheel cover. The hub is mounted on the spindle, the rubber-coated wheel skin is mounted on the hub, and the wheel cover is mounted on the outer end face of the hub.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. Strong inertial continuity of motion: The spindle speed is amplified and transmitted to the turntable through a multi-stage gear transmission system. The inertia of the turntable is used to continue driving the wheel after the push stops, achieving smooth transition and energy-saving operation.
[0015] 2. Effective anti-braking protection mechanism: The anti-braking mechanism can automatically separate the turntable from the gear system during emergency stops, releasing inertial forces, avoiding gear impact and damage, and significantly improving the reliability and service life of the system.
[0016] 3. Compact structure and high transmission efficiency: It adopts a multi-stage gear pair layout, which has high space utilization, large transmission ratio, smooth motion transmission and low noise.
[0017] 4. Wear-resistant, quiet, and long service life: The wheels are made of rubber-coated wheel skin and wheel cover structure, which has good wear resistance, anti-slip and quiet performance, and is suitable for a variety of ground environments.
[0018] 5. Easy maintenance and low cost: Key components such as gears, retaining rings, and springs are all standard or easy-to-machine parts, which are easy to replace and repair, reducing the cost of use.
[0019] This invention not only has a reasonable structure and efficient transmission, but also has good protective performance and adaptability, and can be widely used in wheel devices in furniture, medical devices, logistics equipment and other fields. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in 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, wherein:
[0021] Figure 1 A schematic diagram of a roller structure Figure 1 ;
[0022] Figure 2 A schematic diagram of a roller structure Figure 2 ;
[0023] Figure 3 This is a schematic diagram of the gear transmission system.
[0024] Figure 4 This is a schematic diagram of the wheel's structure;
[0025] Figure 5 for Figure 3 Enlarged view of point A in the middle.
[0026] The markings in the diagram are as follows: 1. Wheel seat; 2. Wheel fork; 3. Wheel; 301. Wheel hub; 302. Rubber-coated wheel skin; 303. Wheel cover; 4. Rotating shaft; 5. Main shaft; 6. Gear transmission system; 601. Main shaft gear; 602. First double gear; 603. Second double gear; 604. Turntable gear; 605. Turntable; 7. Driven shaft; 8. Spring; 9. First retaining ring; 10. Second retaining ring. Detailed Implementation
[0027] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. They should not be construed as limiting the specific protection scope of this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.
[0029] A roller structure, such as Figure 1-5 As shown, the device includes a wheel seat 1, a wheel fork 2, a wheel 3, a gear transmission system 6, and a turntable 605. The wheel seat 1 is rotatably connected to the wheel fork 2. A main shaft 5 is mounted on the wheel fork 2. The wheel 3 is mounted on both sides of the main shaft 5. The gear transmission system 6 and the turntable 605 are both installed inside the wheel fork 2, and the turntable 605 is rotatably connected to the wheel fork 2. The gear transmission system 6 includes at least two sets of gear pairs, and the gear transmission system 6 is connected to the main shaft 5 and the turntable 605 for transmission.
[0030] Preferably, the gear transmission system 6 includes a main shaft gear 601, a first double gear 602, a second double gear 603, and a turntable gear 604. The main shaft gear 601 is mounted on the main shaft 5, and the turntable gear 604 is connected to the turntable 605 for transmission. The main shaft gear 601, the first double gear 602, the second double gear 603, and the turntable gear 604 mesh and transmit power in sequence.
[0031] Specifically, the main shaft gear 601, the first double gear 602, the second double gear 603 and the turntable gear 604 mesh in sequence to form a multi-stage gear transmission system, thereby achieving a step-by-step amplification of the rotational speed and effectively driving the turntable 605 to rotate and store energy; and the overall structure is compact, the transmission ratio is large, and the torque transmission is smooth, which improves the transmission efficiency and motion stability.
[0032] Preferably, the wheel fork 2 is provided with a driven shaft 7, the turntable gear 604 and the turntable 605 are both mounted on the driven shaft 7, and an anti-braking mechanism is provided between the turntable gear 604 and the turntable 605. The anti-braking mechanism is used to allow the turntable 605 to disengage from the turntable gear 604 and rotate freely after the wheel 3 stops rotating.
[0033] Preferably, the turntable gear 604 is mounted on the driven shaft 7 and can slide axially and rotate circumferentially. The turntable 605 is rotatably mounted on the driven shaft 7 and located on one side of the turntable gear 604. A spring 8 is provided on the side of the turntable gear 604 away from the turntable 605. The spring 8 is mounted on the driven shaft 7 and abuts against the turntable gear 604. The anti-braking mechanism includes a first retaining ring 9 and a second retaining ring 10. The first retaining ring 9 is fixedly connected to the turntable gear 604, and the second retaining ring 10 is fixedly connected to the turntable 605. Both the first retaining ring 9 and the second retaining ring 10 are provided with a retaining inclined surface, and the retaining inclined surfaces of the first retaining ring 9 and the second retaining ring 10 contact and mesh with each other.
[0034] Specifically, a spring 8 and a retaining ring with an inclined surface are installed between the turntable gear 604 and the turntable 605. During normal transmission, the retaining ring engages to transmit torque; when the wheel 3 suddenly stops, the resistance on the turntable gear 604 increases, the spring 8 is compressed, the retaining ring separates, and the turntable 605 can rotate freely to release inertial force, effectively avoiding impact and damage to the gear system caused by sudden stops, extending service life, and improving safety. If the main shaft 5 (wheel 3) is stuck, causing the centrifugal force of the turntable 605 to be unable to be released, this mechanism can disengage the turntable 605 from the turntable gear 604 and continue to rotate for a few more revolutions to release centrifugal force, effectively protecting the entire gear mechanism.
[0035] The turntable gear 604 can slide axially and rotate circumferentially. It is kept in normal engagement with the turntable 605 by the preload of the spring 8. It can be separated in case of abnormality. The structure is simple and reliable, the response is sensitive, and it is easy to maintain and replace.
[0036] Preferably, the wheel seat 1 is provided with a first rotating hole, the wheel fork 2 is provided with a second rotating hole, and a rotating shaft 4 is provided between the wheel seat 1 and the wheel fork 2, with the two ends of the rotating shaft 4 respectively installed in the first rotating hole and the second rotating hole.
[0037] Preferably, the wheel 3 includes a hub 301, a rubber-coated wheel skin 302, and a wheel cover 303. The hub 301 is mounted on the main shaft 5, the rubber-coated wheel skin 302 is mounted on the hub 301, and the wheel cover 303 is mounted on the outward end face of the hub 301.
[0038] Specifically, the wheel hub 301 is covered with a TPE rubber-coated wheel skin 302, and an external wheel cover 303 is added to form a wear-resistant, non-slip, and quiet roller structure, which improves service life, running stability and environmental adaptability, and is suitable for various ground conditions.
[0039] advantage:
[0040] 1. Strong inertial continuity motion capability: The multi-stage gear transmission system 6 amplifies the rotational speed of the main shaft 5 and transmits it to the turntable 605. The inertia of the turntable 605 is used to continue driving the wheel 3 after the push stops, achieving smooth transition and energy-saving operation.
[0041] 2. Effective anti-braking protection mechanism: The anti-braking mechanism can automatically separate the turntable 605 from the gear system during emergency stops, releasing inertial forces, avoiding gear impact and damage, and significantly improving the reliability and service life of the system.
[0042] 3. Compact structure and high transmission efficiency: It adopts a multi-stage gear pair layout, which has high space utilization, large transmission ratio, smooth motion transmission and low noise.
[0043] 4. Wear-resistant, quiet, and long service life: Wheel 3 adopts a rubber-coated wheel skin 302 and wheel cover 303 structure, which has good wear resistance, anti-slip and quiet performance, and is suitable for various ground environments.
[0044] 5. Easy maintenance and low cost: Key components such as gears, retaining rings, and springs are all standard or easy-to-machine parts, which are easy to replace and repair, reducing the cost of use.
[0045] This invention not only has a reasonable structure and efficient transmission, but also has good protective performance and adaptability, and can be widely used in wheel devices in furniture, medical devices, logistics equipment and other fields.
[0046] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A roller structure, characterized by: The device includes a wheel seat, a wheel fork, a wheel, a gear transmission system, and a turntable. The wheel seat is rotatably connected to the wheel fork. A main shaft is mounted on the wheel fork. The wheel is mounted on both sides of the main shaft. The gear transmission system and the turntable are both installed inside the wheel fork, and the turntable is rotatably connected to the wheel fork. The gear transmission system includes at least two sets of gear pairs, and the gear transmission system is connected to the main shaft and the turntable for transmission.
2. A roller structure according to claim 1, wherein: The gear transmission system includes a main shaft gear, a first double gear, a second double gear, and a turntable gear. The main shaft gear is mounted on a main shaft, and the turntable gear is connected to a turntable for transmission. The main shaft gear, the first double gear, the second double gear, and the turntable gear mesh and transmit power in sequence.
3. The roller structure according to claim 2, characterized in that: The wheel fork is provided with a driven shaft, and the turntable gear and the turntable are both mounted on the driven shaft. An anti-braking mechanism is provided between the turntable gear and the turntable. The anti-braking mechanism is used to allow the turntable to disengage from the turntable gear and rotate freely after the wheel stops rotating.
4. The roller structure according to claim 3, characterized in that: The turntable gear is mounted on the driven shaft and can slide axially and rotate circumferentially. The turntable is rotatably mounted on the driven shaft and located on one side of the turntable gear. A spring is provided on the side of the turntable gear away from the turntable. The spring is mounted on the driven shaft and abuts against the turntable gear. The anti-braking mechanism includes a first retaining ring and a second retaining ring. The first retaining ring is fixedly connected to the turntable gear, and the second retaining ring is fixedly connected to the turntable. Both the first retaining ring and the second retaining ring are provided with a retaining inclined surface. The retaining inclined surfaces of the first retaining ring and the second retaining ring contact and mesh with each other.
5. A roller structure according to claim 1, characterized in that: The wheel seat is provided with a first rotating hole, the wheel fork is provided with a second rotating hole, and a rotating shaft is provided between the wheel seat and the wheel fork. The two ends of the rotating shaft are respectively installed in the first rotating hole and the second rotating hole.
6. The roller structure according to claim 1, characterized in that: The wheel includes a hub, a rubber-coated wheel skin, and a wheel cover. The hub is mounted on the spindle, the rubber-coated wheel skin is mounted on the hub, and the wheel cover is mounted on the outer end face of the hub.