Transmission structure for turning around center of remote control car model and remote control car model

Abstract

The utility model discloses a transmission structure for remote control car model circle center turning and a remote control car model, the transmission structure comprises a first half axle gear, a second half axle gear and a clutch assembly, the first half axle gear is connected with a first wheel to realize homodromous rotation, and the first half axle gear and the second half axle gear are arranged to rotate in opposite directions; the clutch assembly comprises a conversion clutch and a clutch shaft, the conversion clutch is movably arranged on the clutch shaft in a sleeving mode, and the conversion clutch and the clutch shaft rotate synchronously; the clutch shaft and the second wheel are connected to realize homodromous rotation; the conversion clutch comprises a first position and a second position, and at the first position, the conversion clutch is fixedly connected with the first half axle gear, so that the first half axle gear drives the first wheel and the second wheel to rotate in the same direction; and at the second position, the conversion clutch is connected with the second half axle gear, so that the second half axle gear drives the second wheel to rotate, and the second wheel and the first wheel rotate reversely. The remote control car model is simple in structure, novel in turning-around mode and convenient to operate, and the sense of science and technology and the interestingness of playing are improved.

Description

Technical Field

[0001] This utility model belongs to the field of remote control car model technology, and in particular relates to a transmission structure for turning the center of a remote control car model and the remote control car model. Background Technology

[0002] Conventional remote-controlled model cars are categorized into racing, drifting, climbing, and off-roading types. Turning is typically achieved by deflecting the front wheels at a certain angle. Due to the limitation of the front wheel deflection angle, the turning radius is usually relatively large. Especially without a differential, the mismatch in speed between the inner and outer wheels can prevent the model car from achieving the ideal turning radius, such as the inability to turn around on the spot, thus affecting agility and handling. With poor transmission performance, this mismatch in speed between the inner and outer wheels can also lead to fishtailing or understeer. Utility Model Content

[0003] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a transmission structure for turning the center of a remote-controlled car model and a remote-controlled car model, which are inadequate for existing technologies.

[0004] To address the aforementioned technical problems, in a first aspect, a transmission structure for turning a remote-controlled car model around its center is disclosed, comprising a first half-shaft gear, a second half-shaft gear, and a clutch assembly. The remote-controlled car model includes a first wheel and a second wheel.

[0005] The first half-shaft gear is connected to the first wheel to achieve rotation in the same direction, and the first half-shaft gear and the second half-shaft gear are set to rotate in opposite directions;

[0006] The clutch assembly includes a shift clutch and a clutch shaft. The shift clutch is movably sleeved on the clutch shaft, and the two can rotate synchronously. The clutch shaft is connected to the second wheel to achieve rotation in the same direction.

[0007] The shift clutch includes a first position and a second position. In the first position, the shift clutch is fixedly connected to the first half-shaft gear, so that the first half-shaft gear drives the first wheel and the second wheel to rotate in the same direction. In the second position, the shift clutch is connected to the second half-shaft gear, so that the second half-shaft gear drives the second wheel to rotate, and the second wheel rotates in the opposite direction to the first wheel.

[0008] Furthermore, the shift clutch is movably sleeved on the clutch shaft, and the two can rotate synchronously, including: the outer surface of the clutch shaft that contacts the shift clutch is non-circular, and the inner surface of the shift clutch matches the outer surface of the clutch shaft.

[0009] Furthermore, the connection between the shift clutch and the first or second half-shaft gear is non-circular, and the first and second half-shaft gears are provided with grooves that cooperate with the shift clutch.

[0010] Furthermore, the outer surface of the switching clutch is provided with protrusions and / or grooves, and the first half-shaft gear and the second half-shaft gear are provided with matching grooves and / or protrusions.

[0011] Furthermore, the transmission structure also includes a power gear, which meshes with the first half-shaft gear and the second half-shaft gear respectively, so as to realize that the two half-shaft gears rotate in opposite directions.

[0012] Furthermore, the clutch assembly also includes a shift clutch drive mechanism, and the shift clutch also includes an intermediate position, which is located between a first position and a second position; the shift clutch drive mechanism is used to drive the shift clutch to switch between the first position, the intermediate position, and the second position.

[0013] Furthermore, the transmission structure also includes a first rotating shaft, one end of which is fixedly connected to a first half-shaft gear, and the other end of which is connected to a first wheel.

[0014] Furthermore, the transmission structure also includes a second rotating shaft, which is fixedly connected to the second half-shaft gear.

[0015] Furthermore, the transmission structure also includes a third rotating shaft, one end of which is fixedly connected to the clutch shaft, and the other end is connected to the second wheel. The second rotating shaft is rotatably sleeved on the third rotating shaft.

[0016] Secondly, a remote-controlled car model is disclosed, including a front axle and a rear axle, both of which include the aforementioned transmission structure for turning the remote-controlled car model around.

[0017] Thirdly, a method for controlling the center-turning of a remote-controlled car model is disclosed, which is applied to the aforementioned remote-controlled car model. The method includes: synchronously controlling the front axle and rear axle to move to the second position in the same manner, so that the switching clutch is connected to the second half-shaft gear, the second half-shaft gear drives the second wheel to rotate, and at this time the first half-shaft gear drives the first wheel to rotate in the opposite direction, thereby realizing the center-turning of the remote-controlled car model.

[0018] Fourthly, an auxiliary steering control method for a remote-controlled car model is disclosed, which is applied to the aforementioned remote-controlled car model, including: controlling the switching clutch of the front axle and the rear axle to move to a first position, so that the first wheel and the second wheel rotate in the same direction; controlling the switching clutch of the rear axle to periodically move to a second position, so that the first wheel and the second wheel of the rear axle rotate in opposite directions, thereby realizing the auxiliary steering control of the remote-controlled car model.

[0019] Beneficial effects: The transmission structure proposed in this utility model for turning the remote-controlled car model around the center can drive the left and right wheels to rotate in opposite directions, thereby realizing the turning of the remote-controlled car model around the center. This structure is simple, reduces costs, and has a novel turning method. At the same time, it maintains the driving stability and handling flexibility of the remote-controlled car model, is easy to operate, and also enhances the sense of technology and fun.

[0020] The center-turn mechanism allows remote-controlled car models to perform U-turns in a smaller space. This is particularly useful in racing and drift modes, where remote-controlled car models often need to make U-turns on narrow tracks. It also reduces the risk of fishtailing or losing control, which is especially important in climbing and off-road modes, where the vehicle needs to remain stable on uneven terrain. Attached Figure Description

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0022] Figure 1 This is a perspective view of a transmission structure for turning a remote-controlled car model around its center, provided as an embodiment of this application.

[0023] Figure 2 This is another perspective view of a transmission structure for turning a remote-controlled car model around its center, provided in an embodiment of this application.

[0024] Figure 3 The cross-section of the clutch and clutch shaft in a transmission structure for turning a remote-controlled car model around, as provided in this application embodiment. Figure 1 .

[0025] Figure 4 The cross-section of the clutch and clutch shaft in a transmission structure for turning a remote-controlled car model around, as provided in this application embodiment. Figure 2 .

[0026] Figure 5 The cross-section of the clutch and clutch shaft in a transmission structure for turning a remote-controlled car model around, as provided in this application embodiment. Figure 3 .

[0027] Figure 6 The cross-section of the clutch and clutch shaft in a transmission structure for turning a remote-controlled car model around, as provided in this application embodiment. Figure 4 .

[0028] Figure 7 This is a cross-sectional view of the clutch shifting from the second wheel to the first wheel in a transmission structure for turning a remote-controlled car model around the center, as provided in an embodiment of this application.

[0029] Figure 8 This is another cross-sectional view of the transmission structure for turning a remote-controlled car model around the center, provided in an embodiment of this application, showing the clutch shifting from the second wheel to the first wheel in the first position.

[0030] Figure 9 This is a perspective view of the clutch switching mechanism in a transmission structure for turning a remote-controlled car model around the center, provided in an embodiment of this application.

[0031] Figure 10 The transmission structure for turning a remote-controlled car model around, as provided in this application embodiment, neutralizes... Figure 9 Cross-sectional view of the half-shaft gear adapted to the clutch phase conversion.

[0032] Figure 11 This is a schematic diagram showing the connection between the third rotating shaft and the clutch shaft in a transmission structure for turning a remote-controlled car model around, as provided in an embodiment of this application.

[0033] Figure 12 This is a schematic diagram of a clutch assembly in a transmission structure for turning a remote-controlled car model around the center, provided in an embodiment of this application. Detailed Implementation

[0034] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0035] The first embodiment of this application discloses a transmission structure for turning a remote-controlled car model around its center, such as... Figure 1 and Figure 2 As shown, the remote-controlled car model includes a first half-shaft gear 3, a second half-shaft gear 4, and a clutch assembly. The remote-controlled car model also includes a first wheel 6 and a second wheel 7.

[0036] The first half-shaft gear 3 is connected to the first wheel 6 to achieve rotation in the same direction. For example, a first rotating shaft 31 is provided between the first half-shaft gear 3 and the first wheel 6. One end of the first rotating shaft 31 is fixedly connected to the first half-shaft gear 3, and the other end is connected to the first wheel 6. In order to achieve left and right deflection of the first wheel 6, a receiving cup can be provided between the other end of the first rotating shaft 31 and the first wheel 6.

[0037] The first half-shaft gear 3 and the second half-shaft gear 4 are configured to rotate in opposite directions; for example, the power gear 5 is meshed with the first half-shaft gear 3 and the second half-shaft gear 4 respectively, and the two half-shaft gears rotate in opposite directions through the power mechanism. The connection method between the power mechanism and the power gear 5 is existing technology, and this embodiment of the present invention is not limited thereto. There are other ways to implement the first half-shaft gear 3 and the second half-shaft gear 4 to rotate in opposite directions, and this embodiment of the present invention is not limited thereto.

[0038] The clutch assembly includes a shift clutch 1 and a clutch shaft 11. The shift clutch 1 is movably sleeved on the clutch shaft 11, and the two can rotate synchronously. Specifically, the outer surface of the clutch shaft 11 that contacts the shift clutch 1 can be non-circular, and the inner surface of the shift clutch 1 mates with the outer surface of the clutch shaft 11. In specific implementation, the outer surface of the clutch shaft 11 that contacts the shift clutch 1 can be polygonal, concave-convex, or other non-circular, for example... Figure 3 and Figure 5 The hexagon shown Figure 4 and Figure 6 The gear-shaped inner surface of the shift clutch 1 is designed to fit the cross-section of the clutch shaft 11, ensuring that the shift clutch 1 and the clutch shaft 11 can rotate synchronously.

[0039] The clutch shaft 11 is rotatably connected to the first half-shaft gear 3 and the second half-shaft gear 4, respectively. The clutch shaft 11 is connected to the second wheel 7 to achieve rotation in the same direction. For example, the transmission structure also includes a third rotating shaft 2, one end of which is fixedly connected to the clutch shaft 11, and the other end is connected to the second wheel 7. To achieve left and right deflection of the second wheel 7, a receiving cup can be provided between the other end of the third rotating shaft 2 and the second wheel 7. There are other ways to connect the clutch shaft 11 and the second wheel 7, which are not limited to this embodiment.

[0040] The transmission structure further includes a second rotating shaft 41, which is fixedly connected to the second half-shaft gear 4. The second rotating shaft 41 is rotatably mounted on the third rotating shaft 2.

[0041] The shift clutch 1 includes a first position and a second position. In the first position, the shift clutch 1 is fixedly connected to the first half-shaft gear 3, so that the first half-shaft gear 3 drives the first wheel 6 and the second wheel 7 to rotate in the same direction. In the second position, the shift clutch 1 is connected to the second half-shaft gear 4, so that the second half-shaft gear 4 drives the second wheel 7 to rotate, and the second wheel 7 rotates in the opposite direction to the first wheel 6.

[0042] In one optional implementation, the connection point between the shift clutch 1 and the first half-shaft gear 3 or the second half-shaft gear 4 is non-circular. The first half-shaft gear 3 and the second half-shaft gear 4 are provided with grooves 32 and 42, which engage with the shift clutch 1. Specifically, the connection point between the shift clutch 1 and the first half-shaft gear 3 or the second half-shaft gear 4 can be polygonal or have a concave-convex shape, with the grooves 32 and 42 engaging as shown below. Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown. Figure 7 and Figure 8A cross-sectional view of the clutch 1 shifting from the second wheel to the first wheel in the first position is shown, and a similar cross-sectional view of the clutch 1 shifting from the first wheel to the second wheel in the second position is shown. The shape of the connection between the clutch 1 and the first half-shaft gear 3 or the second half-shaft gear 4 is not limited to the hexagonal or gear shape shown in the figure. The clutch 1 can be wholly or partially disposed in the grooves 32 and 42, such that in the first position, the clutch 1 and the groove 32 engage, the first half-shaft gear 3 drives the clutch 1 to rotate, thereby driving the clutch shaft 11 to rotate, and the rotation of the clutch shaft 11 drives the second wheel 7 to rotate. The first wheel 6 and the second wheel 7 rotate in the same direction, while the second half-shaft gear 4 idles, and the model car is actually remotely controlled to move forward or backward. In the second position, the clutch 1 and the groove 42 engage, the second half-shaft gear 4 drives the clutch 1 to rotate, thereby driving the clutch shaft 11 to rotate, and the rotation of the clutch shaft 11 drives the second wheel 7 to rotate, while the first wheel 6 and the second wheel 7 rotate in opposite directions, achieving a reversal of the center.

[0043] In another alternative implementation, the outer surface of the switching clutch 1 is provided with protrusions and / or grooves, and the first half-shaft gear 3 and the second half-shaft gear 4 are provided with matching grooves and / or protrusions.

[0044] Optionally, protrusions can be provided on both outer surfaces of the shift clutch 1 along its axis, and matching grooves can be provided on the first half-shaft gear 3 and the second half-shaft gear 4. In the first position, the protrusions on the shift clutch 1 and the grooves 32 on the first half-shaft gear 3 engage, causing the first half-shaft gear 3 to drive the shift clutch 1 to rotate, thereby driving the clutch shaft 11 to rotate. The rotation of the clutch shaft 11 then drives the second wheel 7 to rotate. The first wheel 6 and the second wheel 7 rotate in the same direction, while the second half-shaft gear 4 idles, allowing the actual RC car model to move forward or backward. In the second position, the protrusions on the shift clutch 1 and the grooves 42 on the second half-shaft gear 4 engage, causing the second half-shaft gear 4 to drive the shift clutch 1 to rotate, thereby driving the clutch shaft 11 to rotate. The rotation of the clutch shaft 11 then drives the second wheel 7 to rotate, while the first wheel 6 and the second wheel 7 rotate in opposite directions, achieving a reversal of the center. For example, Figure 9 A type of changeover clutch 1 has multiple protrusions 12 on its two outer surfaces. Figure 10 The first half-shaft gear 3 is shown in a cross-sectional view, on which a matching first groove 33 is provided, and the second half-shaft gear 4 is similarly provided.

[0045] Optionally, grooves can be provided on both outer surfaces of the shift clutch 1 in the axial direction, and matching protrusions can be provided on the first half-shaft gear 3 and the second half-shaft gear 4.

[0046] Optionally, a protrusion can be provided on one of the two outer surfaces of the axial direction of the clutch 1, and a matching groove can be provided on the adjacent half-shaft gear; a groove can be provided on the other outer surface, and a matching protrusion can be provided on the adjacent half-shaft gear.

[0047] In the actual implementation process, the settings can be flexibly configured according to actual needs.

[0048] The clutch assembly further includes a shift clutch drive mechanism, and the shift clutch 1 also includes an intermediate position, which is located between the first position and the second position. In the intermediate position, the shift clutch 1 is not connected to the first half-shaft gear 3 and the second half-shaft gear 4. The shift clutch drive mechanism is used to drive the shift clutch 1 to switch between the first position, the intermediate position and the second position.

[0049] In some embodiments, such as Figure 12 As shown, to enable the shift clutch 1 to move to the first or second position, the shift clutch drive mechanism may include a shift fork gear 13, a shift fork 14, and a servo. The shift fork gear 13 and the shift fork 14 are connected, the servo (not shown in the figure) is connected to the shift fork gear 13, and the shift fork 14 engages with the shift clutch 1. The servo rotates the shift fork 14 via the shift fork gear 13, causing the shift fork 14 to rotate and push the shift clutch 1 to move left or right. When the shift clutch 1 is in the first or second position, the shift fork 14 is stationary. To achieve the engagement between the shift fork 14 and the shift clutch 1, a slot can be formed on the surface of the shift clutch 1, or a connecting part can be provided between the connection point of the shift clutch 1 and the first half-shaft gear 3 and the connection point of the shift clutch 1 and the second half-shaft gear 4 to form a slot. A portion of the shift fork 14 is placed in the slot, ensuring that the shift fork 14 can push the shift clutch 1 to move left or right when rotating, and that the shift fork 14 is stationary when the shift clutch is in the first or second position. Of course, there are many ways to coordinate the shift fork 14 and the change clutch 1, which are existing technologies, and this utility model embodiment does not limit them here.

[0050] In other embodiments, the clutch drive mechanism may include a brake cable and a servo. The brake cable is used to control the left and right displacement of the clutch 1. The servo pulls the brake cable to control the shift fork to move left and right, thereby driving the clutch 1 to switch between a first position and a second position.

[0051] Besides the above-mentioned method of switching the clutch 1 to the first or second position, there are many other ways to achieve this, which are not limited here by this utility model embodiment.

[0052] The second embodiment of this application discloses a remote-controlled car model, including a front axle and a rear axle, both of which include the aforementioned transmission structure for turning the remote-controlled car model around.

[0053] The third embodiment of this application discloses a method for controlling the center-turning of a remote-controlled car model, which is applied to the aforementioned remote-controlled car model. The method includes: synchronously controlling the front axle and rear axle to move the switching clutch 1 to the second position in the same manner, so that the switching clutch 1 is connected to the second half-shaft gear 4, the second half-shaft gear 4 drives the second wheel 7 to rotate, at which time the first half-shaft gear 3 drives the first wheel 6 to rotate in the opposite direction, thereby realizing the center-turning of the remote-controlled car model.

[0054] In the specific implementation process, the control module of the remote control car model can send the same signal to the servo of the front axle and the rear axle at the same time, so that the servo of the front axle and the rear axle simultaneously control the corresponding shift fork gear 13 to rotate the shift fork 14. The rotation of the shift fork 14 pushes the corresponding conversion clutch 1 to move to the second position.

[0055] Example:

[0056] A remote-controlled car model includes a front axle and a rear axle, both of which include a transmission structure for turning the remote-controlled car model around its center.

[0057] The transmission structure for turning the remote-controlled car model around includes a first half-shaft gear 3, a second half-shaft gear 4, and a clutch assembly. The remote-controlled car model includes a first wheel 6 and a second wheel 7. In this embodiment, the first half-shaft gear 3 and the first wheel 6 are located on the left side of the remote-controlled car model, and the second half-shaft gear 4 and the second wheel 7 are located on the right side of the remote-controlled car model.

[0058] The first half-shaft gear 3 is connected to the first wheel 6 to achieve rotation in the same direction, such as... Figure 1 As shown, a first rotating shaft 31 is provided between the first half-shaft gear 3 and the first wheel 6. One end of the first rotating shaft 31 is fixedly connected to the first half-shaft gear 3, and the other end is connected to the first wheel 6.

[0059] The first half-shaft gear 3 and the second half-shaft gear 4 are configured to rotate in opposite directions; for example... Figure 1 As shown, the transmission structure is equipped with a power gear 5, which meshes with the first half-shaft gear 3 and the second half-shaft gear 4 respectively, and the two half-shaft gears rotate in opposite directions through the power mechanism. The connection method between the power mechanism and the power gear 5 is existing technology and is not limited in this embodiment.

[0060] The clutch assembly includes a shift clutch 1 and a clutch shaft 11, wherein the shift clutch 1 is movably sleeved on the clutch shaft 11, and the two can rotate synchronously; as Figure 1 and Figure 4 As shown, the cross-section of the clutch shaft 11 is gear-shaped, and the inner surface of the shift clutch 1 is fitted according to the cross-section of the clutch shaft 11 to ensure that the shift clutch 1 and the clutch shaft 11 can rotate synchronously.

[0061] The clutch shaft 11 is rotatably connected to the first half-shaft gear 3 and the second half-shaft gear 4, respectively, and the clutch shaft 11 is connected to the second wheel 7 to achieve rotation in the same direction; for example, the transmission structure also includes a third rotating shaft 2, one end of which is fixedly connected to the clutch shaft 11, and the other end is connected to the second wheel 7, such as... Figure 11 As shown.

[0062] The transmission structure further includes a second rotating shaft 41, which is fixedly connected to the second half-shaft gear 4. The second rotating shaft 41 is rotatably mounted on the third rotating shaft 2.

[0063] A bearing can be installed at one end of the first rotating shaft 31 near the first half-shaft gear 3, and a bearing can be installed at one end of the second rotating shaft 41 near the second half-shaft gear 4. The clutch shaft 11 is installed in the bearing to achieve a rotatable connection.

[0064] The shift clutch 1 includes a first position and a second position. In the first position, the shift clutch 1 is fixedly connected to the first half-shaft gear 3, so that the first half-shaft gear 3 drives the first wheel 6 and the second wheel 7 to rotate in the same direction. In the second position, the shift clutch 1 is connected to the second half-shaft gear 4, so that the second half-shaft gear 4 drives the second wheel 7 to rotate, and the second wheel 7 rotates in the opposite direction to the first wheel 6.

[0065] like Figure 1 , Figure 2 and Figure 7 As shown, the cross-section of the conversion clutch 1 is gear-shaped. Gear-shaped grooves 32 and 42 are provided on the first half-shaft gear 3 and the second half-shaft gear 4, respectively, and these grooves 32 and 42 engage with the conversion clutch 1. The conversion clutch 1 can be fully or partially disposed in the grooves 32 and 42, such that in the first position, the conversion clutch 1 engages with the groove 32, the first half-shaft gear 3 drives the conversion clutch 1 to rotate, thereby driving the clutch shaft 11 to rotate. The rotation of the clutch shaft 11 then drives the second wheel 7 to rotate. The first wheel 6 and the second wheel 7 rotate in the same direction, while the second half-shaft gear 4 idles, allowing the remote-controlled car model to move forward or backward. In the second position, the conversion clutch 1 engages with the groove 42, the second half-shaft gear 4 drives the conversion clutch 1 to rotate, thereby driving the clutch shaft 11 to rotate. The rotation of the clutch shaft 11 then drives the second wheel 7 to rotate, while the first wheel 6 and the second wheel 7 rotate in opposite directions, achieving a reversal of the remote-controlled car model's center.

[0066] When the remote-controlled car model needs to turn around, the front and rear axle switching clutch 1 is moved to the second position in the same way, so that the switching clutch 1 is connected to the second half-shaft gear 4. The second half-shaft gear 4 drives the second wheel 7 to rotate. At this time, the first half-shaft gear 3 drives the first wheel 6 to rotate in the opposite direction. That is, the right front and rear wheels of the car rotate forward, and the left front and rear wheels rotate in the opposite direction. The remote-controlled car model turns around with the center of the four wheels as the center.

[0067] The fourth embodiment of this application discloses an auxiliary steering control method for a remote-controlled car model, applied to the aforementioned remote-controlled car model. The method includes: controlling the front and rear axle switching clutch 1 to move to a first position, causing the first and second wheels to rotate in the same direction; and controlling the rear axle switching clutch 1 to periodically move to a second position, causing the first and second wheels of the rear axle to rotate in opposite directions, thereby achieving auxiliary steering control for the remote-controlled car model. In the specific implementation, steering is achieved by a dedicated steering servo. The periodic reversal of the rear axle is to reduce the turning radius of steering actions without a differential, or to prevent the vehicle from overturning during high-speed steering.

[0068] In the specific implementation process, the control module of the remote-controlled car model sends a first signal to the servos of the front and rear axles, causing the servos of the front and rear axles to control the corresponding shift fork gear 13 to rotate the shift fork 14. The rotation of the shift fork 14 pushes the corresponding shift clutch 1 to move to the first position. When steering is required, the control module periodically sends a second signal to the servo of the rear axle, causing the servo of the rear axle to control the corresponding shift fork gear 13 to rotate the shift fork 14. The rotation of the shift fork 14 pushes the corresponding shift clutch 1 to move to the second position, causing the first and second wheels of the rear axle to rotate in opposite directions, thereby realizing the steering of the remote-controlled car model.

[0069] This utility model provides a transmission structure for turning a remote-controlled car model around its center, and a remote-controlled car model itself. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment 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. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A transmission structure for turning a remote-controlled car model around its center, characterized in that, The remote-controlled car model includes a first half-shaft gear (3), a second half-shaft gear (4), and a clutch assembly. It also includes a first wheel (6) and a second wheel (7). The first half-shaft gear (3) is connected to the first wheel (6) to achieve rotation in the same direction, and the first half-shaft gear (3) and the second half-shaft gear (4) are set to rotate in opposite directions; The clutch assembly includes a changeover clutch (1) and a clutch shaft (11). The changeover clutch (1) is movably sleeved on the clutch shaft (11), and the two can rotate synchronously. The clutch shaft (11) is connected to the second wheel (7) to achieve rotation in the same direction. The shift clutch (1) includes a first position and a second position. In the first position, the shift clutch (1) is fixedly connected to the first half-shaft gear (3), so that the first half-shaft gear (3) drives the first wheel (6) and the second wheel (7) to rotate in the same direction. In the second position, the shift clutch (1) is connected to the second half-shaft gear (4), so that the second half-shaft gear (4) drives the second wheel (7) to rotate, and the second wheel (7) rotates in the opposite direction to the first wheel (6).

2. The transmission structure for turning a remote-controlled car model around its center, as described in claim 1, is characterized in that... The shift clutch (1) is movably sleeved on the clutch shaft (11), and the two can rotate synchronously, including: the outer surface of the clutch shaft (11) in contact with the shift clutch (1) is non-circular, and the inner surface of the shift clutch (1) cooperates with the outer surface of the clutch shaft (11).

3. The transmission structure for turning a remote-controlled car model around its center, as described in claim 2, is characterized in that... The connection between the shift clutch (1) and the first half-shaft gear (3) or the second half-shaft gear (4) is non-circular. The first half-shaft gear (3) and the second half-shaft gear (4) are provided with grooves (32, 42), and the grooves (32, 42) cooperate with the shift clutch (1).

4. The transmission structure for turning a remote-controlled car model around its center, as described in claim 2, is characterized in that... The outer surface of the switching clutch (1) is provided with protrusions and / or grooves, and the first half-shaft gear (3) and the second half-shaft gear (4) are provided with matching grooves and / or protrusions.

5. A transmission structure for turning a remote-controlled car model around its center, as described in claim 3 or 4, characterized in that, It also includes a power gear (5), which meshes with the first half-shaft gear (3) and the second half-shaft gear (4) respectively, so as to realize the two half-shaft gears rotating in opposite directions.

6. A transmission structure for remote-controlled car model center turning as described in claim 3 or 4, characterized in that, The clutch assembly further includes a switching clutch drive mechanism, and the switching clutch (1) further includes an intermediate position, which is located between a first position and a second position; the switching clutch drive mechanism is used to drive the switching clutch (1) to switch between the first position, the intermediate position and the second position.

7. A transmission structure for turning a remote-controlled car model around its center, as described in claim 6, is characterized in that, It also includes a first rotating shaft (31), one end of which is fixedly connected to the first half-shaft gear (3), and the other end is connected to the first wheel (6).

8. A transmission structure for turning a remote-controlled car model around its center, as described in claim 7, is characterized in that, It also includes a second rotating shaft (41), which is fixedly connected to the second half-shaft gear (4).

9. A transmission structure for turning a remote-controlled car model around its center, as described in claim 8, is characterized in that, It also includes a third rotating shaft (2), one end of which is fixedly connected to the clutch shaft (11), and the other end is connected to the second wheel (7). The second rotating shaft (41) is rotatably sleeved on the third rotating shaft (2).

10. A remote-controlled car model, characterized in that, It includes a front axle and a rear axle, both of which include a transmission structure for turning the center of a remote-controlled car model as described in any one of claims 1-9.

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