A shift fork structure for RC model cars

Abstract

This utility model discloses a shift fork structure for RC model cars, relating to the technical field of RC model cars. It includes a shift fork assembly, a left moving assembly, a right moving assembly, a differential, a drive unit, and a housing. The shift fork assembly, left moving assembly, and right moving assembly are all installed inside the housing. The drive unit is fixed to the outside of the housing, and its output end passes through the housing and connects to the shift fork assembly. One end of the shift fork assembly is connected to the left moving assembly, and the other end is connected to the right moving assembly. The differential is located between the left and right moving assemblies. This shift fork structure for RC model cars, through the coordinated movement of the shift fork assembly, left moving assembly, right moving assembly, differential, and drive unit, can achieve four-wheel, three-wheel, and single-sided (left and right) independent drive functions, ensuring the flexibility and reliability of power output. It is suitable for off-road scenarios with high handling performance requirements, improving the user experience.

Description

Technical Field

[0001] This utility model relates to the technical field of RC model cars, specifically a shift fork structure for RC model cars. Background Technology

[0002] RC model cars, also known as remote-controlled model cars, or simply RC cars (full name: Remote Control Car or Radio Control Car), are a branch of model cars, typically consisting of a car body, a remote control, and a receiver. Unlike toy cars, RC model cars exhibit a unique charm in speed racing. They not only offer the thrill of real racing but also avoid the dangers of actual high-speed driving, making them an excellent recreational activity. With the continuous development of remote-controlled model (RC) technology, four-wheel drive (4WD) RC model cars are gradually becoming the pursuit of high-end enthusiasts. Four-wheel drive refers to the four wheels being driven in groups, thus achieving more flexible handling and stronger off-road capabilities: four-wheel drive RC model cars must have the functions of four-wheel, three-wheel, and independent drive on the left and right sides.

[0003] Traditional RC model cars are driven by a combination of front and rear wheels, meaning all four wheels, the two front wheels, or the two rear wheels can be driven simultaneously. This wheel-grouping drive function can no longer meet user needs, as it cannot flexibly adjust power output under different road conditions, making it unsuitable for racing, off-road, and climbing scenarios that require high handling performance. Therefore, a shift fork structure for RC model cars is needed to improve upon these issues. Utility Model Content

[0004] The purpose of this invention is to provide a shift fork structure for RC model cars, aiming to solve the aforementioned technical problems. This shift fork structure for RC model cars, through the coordinated movement between the shift fork assembly, the left moving assembly, the right moving assembly, the differential, and the drive device, can realize the functions of four-wheel, three-wheel, and single-sided independent drive on the left and right sides, ensuring the flexibility and reliability of power output, improving the stability and durability of the system, and is suitable for off-road scenarios with high requirements for handling performance, bringing enthusiasts a more realistic, challenging, and immersive handling experience.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A shift fork structure for an RC model car includes a shift fork assembly, a left moving assembly, a right moving assembly, a differential, a drive unit, and a housing. The shift fork assembly, the left moving assembly, and the right moving assembly are all installed inside the housing. The drive unit is fixed to the outside of the housing. The output end of the drive unit passes through the housing and is connected to the shift fork assembly. One end of the shift fork assembly is connected to the left moving assembly, and the other end of the shift fork assembly is connected to the right moving assembly. The differential is located between the left moving assembly and the right moving assembly.

[0007] Furthermore, the shift fork assembly includes a left shift fork, a right shift fork, and a shift fork slide rod. The output end of the drive device is connected to the shift fork slide rod. One end of the left shift fork and one end of the right shift fork are both sleeved on the shift fork slide rod. The other end of the left shift fork is connected to the left moving component, and the other end of the right shift fork is connected to the right moving component.

[0008] Furthermore, the shift fork assembly also includes a left return spring and a right return spring, both of which are disposed on the shift fork slide rod, with the left return spring located on one side of the left shift fork and the right return spring located on one side of the right shift fork.

[0009] Furthermore, the shift fork assembly also includes a swing arm, a swing connecting column, and a slide rod connecting seat. The output end of the drive device is connected to the swing arm. The swing arm is provided with a swing connecting hole. One end of the swing connecting column is in the swing connecting hole, and the other end of the swing connecting column is connected to the slide rod connecting seat. The other end of the slide rod connecting seat is connected to the shift fork slide rod.

[0010] Furthermore, the left-moving component includes a left wheel slider, a left wheel output shaft, and a left wheel slider mounting base. The left wheel slider is sleeved on the left wheel output shaft. One end of the left wheel output shaft passes through the left wheel slider mounting base and the left wheel slider and is connected to the differential. The upper and lower ends of the left wheel slider mounting base are connected to the housing. The left wheel slider and the left wheel slider mounting base are movably connected.

[0011] Furthermore, the left wheel slider is provided with a left insertion part, a left shift fork connecting part and a left gear part. The left shift fork connecting part is located between the left insertion part and the left gear part. The left gear part is movably connected to the differential. The left shift fork connecting part is connected to the left shift fork plate. The left insertion part is movably connected to the left wheel slider fixing seat.

[0012] Furthermore, the inner side of the left wheel slider fixing seat is provided with a left wheel slider fixing part, which is adapted to the left insertion part.

[0013] Furthermore, the right-moving component includes a right wheel slider, a right wheel output shaft, and a right wheel slider mounting base. The right wheel slider is sleeved on the right wheel output shaft. One end of the right wheel output shaft passes through the right wheel slider mounting base and the right wheel slider and is connected to the differential. The upper and lower ends of the right wheel slider mounting base are connected to the housing. The right wheel slider and the right wheel slider mounting base are movably connected.

[0014] Furthermore, the right wheel slider is provided with a right insertion part, a right shift fork connection part and a right gear part. The right shift fork connection part is located between the right insertion part and the right gear part. The right gear part is movably connected to the differential. The right shift fork connection part is connected to the right shift fork plate. The right insertion part is movably connected to the right wheel slider fixing seat.

[0015] Furthermore, the differential is provided with a left gear rotating part and a right gear rotating part. The left gear rotating part meshes with the left gear part of the left wheel slider, and the right gear rotating part meshes with the right gear part of the right wheel slider.

[0016] This utility model relates to a shift fork structure for RC model cars, and has the following beneficial effects:

[0017] 1. This utility model is mainly composed of a shift fork assembly, a left moving assembly, a right moving assembly, a differential, and a drive device. It has few components, a compact overall structure, a reasonable space design, and high reliability.

[0018] 2. This utility model can be installed on the four-wheel drive system of a model car to achieve power separation between the front and rear wheels, ensuring that power output can be flexibly adjusted under different road conditions. Specifically, when the shift fork is moved to a certain position, different transmission routes can be switched, thereby realizing power group control. That is, it can realize the functions of four-wheel, three-wheel, and left and right single-side independent drive, ensuring the flexibility and reliability of power output, improving the stability and durability of the system, and is suitable for racing, off-road and climbing scenarios with high requirements for handling performance, bringing enthusiasts a more realistic, more challenging and immersive handling experience;

[0019] 3. In the shift fork assembly, this utility model adopts a spring return design. That is, by adding a left return spring and a right return spring to the shift fork slide, the return capability of the split shift fork structure is improved, avoiding inaccurate return during shift fork operation. Furthermore, by adding the left return spring and the right return spring, the stability and reliability of the shift fork system are improved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the rear-drive assembly of this utility model in a dual-wheel output state;

[0021] Figure 2 For the present utility model Figure 1The diagram shown is a structural schematic without the outer shell.

[0022] Figure 3 For the present utility model Figure 2 The diagram shown is a structural breakdown diagram;

[0023] Figure 4 This is a schematic diagram of the front-drive assembly of this utility model in a dual-wheel output state;

[0024] Figure 5 This is a schematic diagram of the front-wheel drive assembly of this utility model in the output state of the left wheel;

[0025] Figure 6 This is a schematic diagram of the front-drive assembly of this utility model - right wheel output state;

[0026] Figure 7 This is a schematic diagram of the rear-drive assembly of this utility model with the left wheel output state.

[0027] Figure 8 This is a schematic diagram of the right wheel output state of the rear drive assembly of this utility model.

[0028] The following are the labeling elements in the diagram: 1. Shift fork assembly; 2. Left sliding assembly; 3. Right sliding assembly; 4. Differential; 5. Drive unit; 6. Housing; 7. Left shift fork; 8. Right shift fork; 9. Shift fork slide bar; 10. Left return spring; 11. Right return spring; 12. Swing arm; 13. Swing connecting column; 14. Slide bar connecting seat; 15. Left wheel slider; 16. Left wheel output shaft; 17. Left wheel slider fixing seat; 18. Left insertion part; 19. Left shift fork connecting part; 20. Left gear part; 21. Left wheel slider fixing part; 22. Right wheel slider; 23. Right wheel output shaft; 24. Right wheel slider fixing seat; 25. Right insertion part; 26. Right shift fork connecting part; 27. Right gear part; 28. Right wheel slider fixing part; 29. ​​Right gear rotating part. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the product of this utility model will be further described in detail below with reference to the embodiments and accompanying drawings.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figure 1 As shown, a shift fork structure for an RC model car includes a shift fork assembly 1, a left moving assembly 2, a right moving assembly 3, a differential 4, a drive unit 5, and a housing 6. The shift fork assembly 1, left moving assembly 2, and right moving assembly 3 are all mounted inside the housing 6. The drive unit 5 is fixed to the outside of the housing 6, and its output end passes through the housing 6 and connects to the shift fork assembly 1. One end of the shift fork assembly 1 is connected to the left moving assembly 2, and the other end is connected to the right moving assembly 3. The differential 4 is located between the left moving assembly 2 and the right moving assembly 3. In this embodiment, the drive unit 5 is a servo motor.

[0033] It should be noted that this utility model can be installed on the four-wheel drive system of a model car to achieve power separation between the front and rear wheels: the shift fork structure can control the power transmission between the front and rear wheels, ensuring that the power output can be flexibly adjusted under different road conditions. Specifically, when the shift fork is moved to a certain position, different transmission routes can be switched, thereby realizing the group control of power, that is, it can realize the functions of four-wheel, three-wheel, and left and right single-side independent drive, ensuring the flexibility and reliability of power output, and improving the stability and durability of the system.

[0034] It should be further explained that this utility model is mainly composed of a shift fork assembly 1, a left moving assembly 2, a right moving assembly 3, a differential 4, and a drive device 5. It has few components, a compact overall structure, a reasonable space design, and high reliability.

[0035] like Figure 1 and Figure 2 As shown, the shift fork assembly 1 includes a left shift fork 7, a right shift fork 8, and a shift fork slide rod 9. The shift fork slide rod 9 can move within the housing 6. The output end of the drive device 5 is connected to the shift fork slide rod 9. One end of the left shift fork 7 and one end of the right shift fork 8 are both sleeved on the shift fork slide rod 9. The other end of the left shift fork 7 is detachably connected to the left moving assembly 2, and the other end of the right shift fork 8 is detachably connected to the right moving assembly 3.

[0036] like Figure 2 and Figure 3As shown, the other end of the left shift fork 7 is provided with a left clamping edge, which is detachably connected to the left moving component 2. The other end of the right shift fork 8 is provided with a right clamping edge, which is detachably connected to the right moving component 3. The left clamping edge is provided with left buffer parts on both sides, and the right clamping edge is provided with right buffer parts on both sides.

[0037] like Figure 2 and Figure 3 As shown, the shift fork assembly 1 also includes a left return spring 10 and a right return spring 11. The left return spring 10 and the right return spring 11 are both disposed on the shift fork slide rod 9, and the left return spring 10 is located on one side of the left shift fork piece 7, and the right return spring 11 is located on one side of the right shift fork piece 8.

[0038] It should be noted that the present invention adopts a spring return design in the shift fork assembly 1. That is, by adding a left return spring 10 and a right return spring 11 to the shift fork slide rod 9, the return capability of the split shift fork structure is improved, avoiding inaccurate return during shift fork operation. Furthermore, by adding the left return spring 10 and the right return spring 11, the stability and reliability of the shift fork system are improved.

[0039] like Figure 1 and Figure 2 As shown, the shift fork assembly 1 also includes a swing arm 12, a swing connecting post 13, and a slide rod connecting seat 14. The output end of the drive device 5 is connected to the swing arm 12. The swing arm 12 is provided with a swing connecting hole. One end of the swing connecting post 13 can move in the swing connecting hole. The other end of the swing connecting post 13 is connected to the slide rod connecting seat 14. The other end of the slide rod connecting seat 14 is connected to the shift fork slide rod 9.

[0040] It should be noted that the drive device 5 drives the swing arm 12 to swing, and with the cooperation of the swing connecting column 13 and the slide rod connecting seat 14, it drives the shift fork slide rod 9 to move left and right.

[0041] like Figure 2 and Figure 3 As shown, the left moving assembly 2 includes a left wheel slider 15, a left wheel output shaft 16, and a left wheel slider fixing seat 17. The left wheel slider 15 is sleeved on the left wheel output shaft 16. One end of the left wheel output shaft 16 passes through the left wheel slider fixing seat 17 and the left wheel slider 15 and is connected to the differential 4. The upper end and lower end of the left wheel slider fixing seat 17 are connected to the housing 6. The left wheel slider 15 and the left wheel slider fixing seat 17 are movably connected.

[0042] like Figure 2 and Figure 3As shown, the left wheel slider 15 is provided with a left insertion part 18, a left shift fork connecting part 19 and a left gear part 20. The left shift fork connecting part 19 is located between the left insertion part 18 and the left gear part 20. The left gear part 20 is movably connected to the differential 4. The left shift fork connecting part 19 is detachably connected to the left clamping edge of the left shift fork plate 7. The left insertion part 18 is movably connected to the left wheel slider fixing seat 17.

[0043] like Figure 2 and Figure 3 As shown, the left wheel slider fixing part 21 is provided inside the left wheel slider fixing seat 17, and the left wheel slider fixing part 21 is adapted to the left insertion part 18.

[0044] like Figure 2 and Figure 3 As shown, the left insertion part 18 is provided with a plurality of left insertion recesses and a plurality of left insertion protrusions, and the left wheel slider fixing part 21 is provided with a plurality of left fixing recesses and a plurality of left fixing protrusions. The left insertion recesses and the left fixing protrusions are adapted to each other, and the left insertion protrusions and the left fixing recesses are adapted to each other.

[0045] like Figure 2 and Figure 3 As shown, the right-moving component 3 includes a right wheel slider 22, a right wheel output shaft 23, and a right wheel slider fixing seat 24. The right wheel slider 22 is sleeved on the right wheel output shaft 23. One end of the right wheel output shaft 23 passes through the right wheel slider fixing seat 24 and the right wheel slider 22 and is connected to the differential 4. The upper and lower ends of the right wheel slider fixing seat 24 are connected to the housing 6. The right wheel slider 22 and the right wheel slider fixing seat 24 are movably connected.

[0046] like Figure 2 and Figure 3 As shown, the right wheel slider 22 is provided with a right insertion part 25, a right shift fork connecting part 26 and a right gear part 27. The right shift fork connecting part 26 is located between the right insertion part 25 and the right gear part 27. The right gear part 27 is movably connected to the differential 4. The right shift fork connecting part 26 is detachably connected to the right clamping edge of the right shift fork plate 8. The right insertion part 25 is movably connected to the right wheel slider fixing seat 24.

[0047] like Figure 2 and Figure 3 As shown, the inner side of the right wheel slider fixing seat 24 is provided with a right wheel slider fixing part 28, which is adapted to the right insertion part 25.

[0048] like Figure 2 and Figure 3As shown, the right insertion part 25 is provided with a plurality of right insertion recesses and a plurality of right insertion protrusions, and the right wheel slider fixing part 28 is provided with a plurality of right fixing recesses and a plurality of right fixing protrusions. The right insertion recesses and right fixing protrusions are adapted to each other, and the right insertion protrusions and right fixing recesses are adapted to each other.

[0049] like Figure 2 and Figure 3 As shown, the differential 4 has a left gear rotating part and a right gear rotating part 29. The left gear rotating part meshes with the left gear part 20 of the left wheel slider 15, and the right gear rotating part 29 meshes with the right gear part 27 of the right wheel slider 22. The differential 4 in this embodiment is a prior art structure, so it will not be described in detail here.

[0050] like Figures 1 to 8 As shown, the outer casing 6 of this embodiment includes a left fixed casing, a right fixed casing, a front side casing, a rear side casing, a left shaft sleeve, and a right shaft sleeve. The left shaft sleeve is mounted on the left wheel output shaft 16, the left fixed casing is mounted on the left fixed casing, and one end of the left fixed casing is connected to the front side casing.

[0051] The right bushing is mounted on the right wheel output shaft 23, the right fixed shell is mounted on the right fixed shell, and one end of the right fixed shell is connected to the front shell;

[0052] The front and rear shells are connected by fasteners.

[0053] The working principle of this utility model is as follows:

[0054] like Figure 1 and Figure 4 As shown, control mode 1: front conveyor, dual-wheel output; rear conveyor, dual-wheel output.

[0055] When the shift fork slide 9 is in the center position, the left shift fork 7 and the right shift fork 8 are squeezed by the left return spring 10 and the right return spring 11 respectively. The left shift fork 7 and the right shift fork 8 push the left wheel slider 15 and the right wheel slider 22 into the differential 4 and engage with the differential 4. At this time, the left wheel slider 15 drives the left wheel output shaft 16 to rotate and the right wheel slider 22 drives the right wheel output shaft 23 to rotate, so that the left and right wheels output at the same time.

[0056] like Figure 5 and Figure 7 As shown, control mode two: front conveyor, left wheel output; rear conveyor, left wheel output.

[0057] When the shift fork slide bar 9 is pulled to the right, the right shift fork 8 is pushed by the shift fork slide bar 9 and slides to the right into the right wheel slider fixing seat 24 and gets stuck. At the same time, it drives the right wheel slider 22 to separate from the differential 4. At this time, the right wheel does not rotate. Meanwhile, the left shift fork 7 is squeezed by the left return spring 10. The left shift fork 7 pushes the left wheel slider 15 into the differential 4 and engages with the differential 4. At this time, the left wheel slider 15 drives the left wheel output shaft 16 to rotate, achieving left wheel output.

[0058] like Figure 6 and Figure 8 As shown, control mode three: front conveyor, right wheel output; rear conveyor, right wheel output.

[0059] When the shift fork slide bar 9 is pulled to the left, the left shift fork 7 is pushed by the shift fork slide bar 9 and slides to the left into the left wheel slider fixing seat 17 and gets stuck. At the same time, it drives the left wheel slider 15 to separate from the differential 4. At this time, the left wheel does not rotate. Meanwhile, the right shift fork 8 is squeezed by the right return spring 11. The right shift fork 8 pushes the right wheel slider 22 into the differential 4 and engages with the differential 4. At this time, the right wheel slider 22 drives the right wheel output shaft 23 to rotate, achieving right wheel output.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Those skilled in the art can readily implement the present utility model according to the accompanying drawings and the above description. However, any modifications, alterations, or equivalent changes made by those skilled in the art without departing from the scope of the present utility model's technical solution, based on the disclosed technical content, are all equivalent embodiments of the present utility model. Furthermore, any equivalent changes, alterations, or evolutions made to the above embodiments based on the essential technology of the present utility model still fall within the technical solution of the present utility model.

Claims

1. A shift fork structure for an RC model vehicle, characterized by: It includes a shift fork assembly (1), a left moving assembly (2), a right moving assembly (3), a differential (4), a drive unit (5), and a housing (6). The shift fork assembly (1), the left moving assembly (2), and the right moving assembly (3) are all installed inside the housing (6). The drive unit (5) is fixed on the outside of the housing (6). The output end of the drive unit (5) passes through the housing (6) and is connected to the shift fork assembly (1). One end of the shift fork assembly (1) is connected to the left moving assembly (2), and the other end of the shift fork assembly (1) is connected to the right moving assembly (3). The differential (4) is located between the left moving assembly (2) and the right moving assembly (3).

2. The fork structure for an RC model vehicle according to claim 1, characterized by: The shift fork assembly (1) includes a left shift fork (7), a right shift fork (8) and a shift fork slide (9). The output end of the drive device (5) is connected to the shift fork slide (9). One end of the left shift fork (7) and one end of the right shift fork (8) are both sleeved on the shift fork slide (9). The other end of the left shift fork (7) is connected to the left moving assembly (2), and the other end of the right shift fork (8) is connected to the right moving assembly (3).

3. The fork structure for an RC model vehicle according to claim 2, characterized by: The shift fork assembly (1) also includes a left return spring (10) and a right return spring (11). The left return spring (10) and the right return spring (11) are both disposed on the shift fork slide (9), and the left return spring (10) is located on one side of the left shift fork piece (7), and the right return spring (11) is located on one side of the right shift fork piece (8).

4. The fork structure for an RC model vehicle according to claim 3, characterized by: The shift fork assembly (1) also includes a swing arm (12), a swing connecting post (13), and a slide rod connecting seat (14). The output end of the drive device (5) is connected to the swing arm (12). The swing arm (12) is provided with a swing connecting hole. One end of the swing connecting post (13) is in the swing connecting hole. The other end of the swing connecting post (13) is connected to the slide rod connecting seat (14). The other end of the slide rod connecting seat (14) is connected to the shift fork slide rod (9).

5. The fork structure for an RC model vehicle according to claim 4, characterized by: The left moving component (2) includes a left wheel slider (15), a left wheel output shaft (16), and a left wheel slider mounting base (17). The left wheel slider (15) is sleeved on the left wheel output shaft (16). One end of the left wheel output shaft (16) passes through the left wheel slider mounting base (17) and the left wheel slider (15) and is connected to the differential (4). The upper and lower ends of the left wheel slider mounting base (17) are connected to the housing (6). The left wheel slider (15) and the left wheel slider mounting base (17) are movably connected.

6. The fork structure for an RC model vehicle according to claim 5, characterized by: The left wheel slider (15) is provided with a left insertion part (18), a left shift fork connection part (19) and a left gear part (20). The left shift fork connection part (19) is located between the left insertion part (18) and the left gear part (20). The left gear part (20) is movably connected to the differential (4). The left shift fork connection part (19) is connected to the left shift fork plate (7). The left insertion part (18) is movably connected to the left wheel slider fixing seat (17).

7. The fork structure for an RC model vehicle according to claim 6, characterized by: The inner side of the left wheel slider fixing seat (17) is provided with a left wheel slider fixing part (21), which is adapted to the left plug-in part (18).

8. The fork structure for an RC model vehicle according to claim 7, characterized by: The right-moving component (3) includes a right wheel slider (22), a right wheel output shaft (23), and a right wheel slider mounting base (24). The right wheel slider (22) is sleeved on the right wheel output shaft (23). One end of the right wheel output shaft (23) passes through the right wheel slider mounting base (24) and the right wheel slider (22) is connected to the differential (4). The upper and lower ends of the right wheel slider mounting base (24) are connected to the housing (6). The right wheel slider (22) and the right wheel slider mounting base (24) are movably connected.

9. The fork structure for an RC model vehicle according to claim 8, characterized by: The right wheel slider (22) is provided with a right insertion part (25), a right shift fork connection part (26) and a right gear part (27). The right shift fork connection part (26) is located between the right insertion part (25) and the right gear part (27). The right gear part (27) is movably connected to the differential (4). The right shift fork connection part (26) is connected to the right shift fork plate (8). The right insertion part (25) is movably connected to the right wheel slider fixing seat (24).

10. The fork structure for an RC model vehicle according to claim 9, characterized by: The differential (4) is provided with a left gear rotating part and a right gear rotating part (29). The left gear rotating part meshes with the left gear part (20) of the left wheel slider (15), and the right gear rotating part (29) meshes with the right gear part (27) of the right wheel slider (22).

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