Transmission device of remote control car

Abstract

The transmission device of the remote control car comprises a box body, a transmission shaft, a gear, a pull-down rebounding mechanism, a supporting rod and a swing rod, the two ends of the transmission shaft are rotatably connected in the box body, the gear is fixedly connected in the transmission shaft, a sleeve is arranged in the box body, and the lower end of the pull-down rebounding mechanism is connected in the sleeve in a sliding mode. A shifting rod is arranged on the side face of the pull-down rebounding mechanism, an eccentric structure is arranged on the side face of the gear, the eccentric structure can eccentrically rotate and downwards abut against the shifting rod, a cover plate is arranged at the upper end of the box body, a through hole corresponding to the sleeve in position is formed in the cover plate, the middle of the pull-down rebounding mechanism is slidably connected into the through hole, and the supporting rod is installed on the cover plate. The middle of the swing rod is hinged to the top end of the supporting rod, a hollow concentric-square-shaped structure is arranged at one end of the swing rod, and the side face of the upper end of the pull-down rebounding mechanism is embedded and slidably connected into the concentric-square-shaped structure. The device can utilize the power of the motor of the remote control car to realize the beating action, so that the cost that the beating action needs to be controlled by an independent reciprocating mechanism is saved.

Description

Technical Field

[0001] This utility model relates to the field of remote control car technology, specifically to a transmission device for a remote control car. Background Technology

[0002] Remote control cars, as a type of toy that is highly operable and fun, possess unparalleled charm. Their development and iteration speed is rapid, with continuous product innovation. Remote control cars come in various shapes and sizes, and their functions also differ. Multifunctionality often requires multiple motion mechanisms. For example, a remote control car with a drumming function needs a separate reciprocating motion mechanism to achieve the drumming action, which occupies a significant amount of space and increases manufacturing costs. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a transmission device for a remote control car, which can use the power of the remote control car motor to realize the knocking action, saving the cost of the drumming action which requires a separate reciprocating motion mechanism for control.

[0004] The technical solution of this utility model is as follows: a transmission device for a remote control car, including a housing, a transmission shaft, a gear, a pull-back mechanism, a support rod, and a swing rod. The two ends of the transmission shaft are rotatably connected to the housing, the gear is fixedly connected to the transmission shaft, a sleeve is provided inside the housing, the lower end of the pull-back mechanism is slidably connected to the sleeve, a lever is provided on the side of the pull-back mechanism, an eccentric structure is provided on the side of the gear, the eccentric structure can rotate eccentrically and abut against the lever downward, a cover plate is provided at the upper end of the housing, a through hole corresponding to the position of the sleeve is provided on the cover plate, the middle part of the pull-back mechanism is slidably connected to the through hole, the support rod is installed on the cover plate, the middle part of the swing rod is hinged to the top of the support rod, one end of the swing rod is provided with a hollow U-shaped structure, the side of the upper end of the pull-back mechanism is embedded in and slidably connected to the U-shaped structure.

[0005] Furthermore, the eccentric structure is a guide wheel that is eccentrically positioned on the side of the gear.

[0006] Furthermore, the pull-down rebound mechanism includes a pull rod and a spring. The pull rod has a limiting platform in the middle, and the spring is sleeved on the pull rod. The spring is located between the limiting platform and the sleeve. The limiting platform can abut against the cover plate upwards. The sleeve has a side-opening sliding groove. The lever is located on the side of the lower end of the pull rod and is slidably connected in the sliding groove. The upper end of the pull rod passes through the through hole, and the side of the upper end of the pull rod is embedded and slidably connected in the U-shaped structure.

[0007] Furthermore, the upper end of the pull rod is provided with a movable head on its side, which is embedded and slidably connected in the loop structure.

[0008] Furthermore, there are two of each of the gears, pull-down spring mechanism, support rod, and swing rod, and they are arranged symmetrically.

[0009] Furthermore, the gear includes a first gear and a second gear, and the guide wheel includes a first guide wheel and a second guide wheel. The first guide wheel and the second guide wheel are respectively located on the sides of the first gear and the second gear. The first guide wheel and the second guide wheel are arranged opposite to each other or back to back, and the first guide wheel and the second guide wheel are 180° apart.

[0010] Furthermore, the cover plate is provided with a frustum, and one end of the swing rod can abut against the frustum.

[0011] Furthermore, it also includes a transmission assembly, which is installed in the housing and whose output end is connected to a gear transmission.

[0012] Compared with the prior art, the advantages of this utility model are: following the change of the motor speed of the remote control car, the swing arm reciprocates to strike the drum, forming a drumming action; this device not only saves the cost of the drumming action which requires an independent reciprocating motion mechanism for control, but also achieves the effect of synchronizing the drumming frequency with the motor speed, that is, the faster the remote control car is, the more frequently the drumming occurs, providing new fun for remote control cars. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the structural principle of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the pull rod of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the transmission component of this utility model;

[0019] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0020] The components include: 1. Housing; 2. Cover plate; 201. Through hole; 3. Sleeve; 301. Sliding groove; 4. Pull rod; 401. Toggle rod; 402. Limiting platform; 403. Moving head; 5. Spring; 6. Support rod; 7. Swing rod; 701. U-shaped structure; 8. Frustum; 9. Gear; 901. First gear; 902. Second gear; 10. Guide wheel; 1001. First guide wheel; 1002. Second guide wheel; 11. Transmission assembly. Detailed Implementation

[0021] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] like Figure 1-6 As shown, a transmission device for a remote-controlled car includes a housing 1, a drive shaft, a gear 9, a pull-back mechanism, a support rod 6, and a swing rod 7. The two ends of the drive shaft are rotatably connected to the housing 1, and the gear 9 is fixedly connected to the drive shaft. A sleeve 3 is provided inside the housing 1. The lower end of the pull-back mechanism is slidably connected to the sleeve 3. A lever 401 is provided on the side of the pull-back mechanism, and an eccentric structure is provided on the side of the gear 9. The eccentric structure can rotate eccentrically and abut against the lever 401 downwards. A cover plate 2 is provided at the upper end of the housing 1, and a through hole 201 corresponding to the position of the sleeve 3 is provided on the cover plate 2. The middle part of the pull-back mechanism is slidably connected to the through hole 201. The support rod 6 is installed on the cover plate 2. The middle part of the swing rod 7 is hinged to the top of the support rod 6. One end of the swing rod 7 has a hollow U-shaped structure 701, and the side of the upper end of the pull-back mechanism is embedded in and slidably connected to the U-shaped structure 701. Under the output of an external motor power source, the gear 9... As the drive shaft rotates, the eccentric structure on the side of gear 9 rotates around the drive shaft and abuts against lever 401 from top to bottom. After lever 401 is pulled downward by the eccentric structure, it drives the pull-back mechanism to slide downward, thereby pulling down one end of the swing rod 7, which is hinged to the support rod 6 in the middle, while lifting the other end. As the eccentric structure rotates, it will disengage from the upper surface of lever 401. At this time, the pull-back mechanism will quickly rebound upward, and the lifted end of swing rod 7 will quickly fall down, forming a reciprocating striking action. When this device is applied to a remote control car with a large drum, the swing rod 7 reciprocates and strikes the drum according to the change of the remote control car's motor speed, forming a drumming action. With this device, not only is the cost of controlling the drumming action with a separate reciprocating motion mechanism saved, but the effect of synchronizing the drumming frequency with the motor speed can also be achieved. That is, the faster the remote control car is, the more frequently the drumming occurs, providing a new kind of fun for remote control cars.

[0023] In the above embodiment, the eccentric structure is a guide wheel 10 eccentrically disposed on the side of the gear 9, which transforms the sliding connection relationship between the eccentric structure and the lever 401 into a rolling connection relationship. That is, the guide wheel 10 can roll left and right on the upper surface of the lever 401, avoiding repeated wear of the eccentric structure on the lever 401, and making it smoother when the eccentric structure pulls the lever 401 downward. The pull-down rebound mechanism includes a pull rod 4 and a spring 5. A limiting platform 402 is provided in the middle of the pull rod 4. The spring 5 is sleeved on the pull rod 4 and is located between the limiting platform 402 and the sleeve 3. The limiting platform 402 can abut against the cover plate 2 upwards. The sleeve 3 is provided with a side-opening sliding groove 301. The lever 401 is located on the side of the lower end of the pull rod 4 and is slidably connected in the sliding groove 301. The upper end of the pull rod 4 passes through the through hole 201, and the side of the upper end of the pull rod 4 is embedded and slidably connected in the U-shaped structure 701. Under the elastic support force of the spring 5, the limiting platform 402 abuts against the lower end face of the cover plate 2 where the through hole 201 is located. After the pull rod 4 is pulled down, the limiting platform 402 compresses the spring 5 downwards. After the guide wheel 10 disengages from the pull rod 4, the spring 5 is released and the limiting platform 402 pops out, so that the swing rod 7 makes a rapid downward striking action. The upper end of the pull rod 4 is provided with a movable head 403 on its side. The movable head 403 is embedded and slidably connected in the loop structure 701. The movable head 403 can also be rotatably connected to the pull rod 4, so that the sliding connection between the movable head 403 and the loop structure 701 is increased to a rotatable connection, making the movable head 403 move more smoothly.

[0024] In the above embodiment, there are two of each of the gear 9, pull-down rebound mechanism, support rod 6, and swing rod 7, which are symmetrically arranged. A human or animal model can be placed on the cover plate 2. The swing rod 7 is equivalent to the hands of the model. As the device performs the action of playing drums with both hands, it is vivid and interesting. The gear 9 includes a first gear 901 and a second gear 902. The guide wheel 10 includes a first guide wheel 1001 and a second guide wheel 1002. The first guide wheel 1001 and the second guide wheel 1002 are located on the sides of the first gear 901 and the second gear 902, respectively. The first guide wheel 1001 and the second guide wheel 1002 are arranged opposite each other or back to back. The first guide wheel 1001 and the second guide wheel 1002 are 180° apart. The first guide wheel 1001 and the second guide wheel 1002 alternately pull down the two symmetrically arranged pull-down rebound mechanisms, so that the action of the device evolves into the action of playing drums with both hands alternately. When the motor rotates rapidly, the drum sound is continuous. The cover plate 2 is provided with a frustum 8, and one end of the swing rod 7 can abut against the frustum 8. The frustum 8 is equivalent to a solid drum. A hollow simulated drum can also be installed on the frustum 8 by means of threaded connection to restore a realistic scene.

[0025] The device also includes a speed change component 11, which is installed in the housing 1. The output end of the speed change component 11 is connected to the gear 9 for transmission, so as to appropriately reduce the speed of the external motor and prevent the pull-down rebound mechanism from entering the next round of pull-down action before it is fully reset when the motor is rotating at high speed, thus avoiding the failure of the drumming action.

[0026] Description of the working principle of this utility model:

[0027] This device is used in a bear-shaped drumming remote control car. The housing 1 is a recessed area inside the car's body, and the cover 2 is a partition or shell. The hollow bear shape is mounted on the cover 2, covering the support rod 6 and the swing rod 7 of the section containing the loop structure 701. The front end of the swing rod 7 is shaped like a drumstick, and a mini drum is mounted on the top of the truncated cone 8. When the remote control car moves forward, the first guide wheel 1001 and the second guide wheel 1002, located on the sides of the first gear 901 and the second gear 902, alternately pull down the levers 401 of the two symmetrically arranged pull-back mechanisms. This causes the two swing rods 7, which are slidably connected to the movable head 403, to alternately lift and lower, striking the mini drum. As the speed of the remote control car's motor increases, the drumming frequency increases, creating a tense and exciting feeling similar to the drumming action in dragon boat racing, making it vivid and interesting.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transmission device for a remote-controlled car, comprising a housing, a drive shaft, gears, a pull-back mechanism, a support rod, and a swing rod, characterized in that: The two ends of the drive shaft are rotatably connected to the housing, and the gear is fixedly connected to the drive shaft. A sleeve is provided inside the housing, and the lower end of the pull-down rebound mechanism is slidably connected to the sleeve. A lever is provided on the side of the pull-down rebound mechanism, and an eccentric structure is provided on the side of the gear. The eccentric structure can rotate eccentrically and abut against the lever downward. A cover plate is provided at the upper end of the housing, and a through hole corresponding to the position of the sleeve is provided on the cover plate. The middle part of the pull-down rebound mechanism is slidably connected to the through hole. The support rod is installed on the cover plate, and the middle part of the swing rod is hinged to the top of the support rod. One end of the swing rod is provided with a hollow U-shaped structure, and the side of the upper end of the pull-down rebound mechanism is embedded in and slidably connected to the U-shaped structure.

2. The transmission device for the remote-controlled car according to claim 1, characterized in that: The eccentric structure is a guide wheel that is eccentrically positioned on the side of the gear.

3. The transmission device for the remote-controlled car according to claim 2, characterized in that: The pull-down rebound mechanism includes a pull rod and a spring. The pull rod has a limiting platform in the middle, and the spring is sleeved on the pull rod. The spring is located between the limiting platform and the sleeve. The limiting platform can abut against the cover plate upward. The sleeve has a side-opening sliding groove. The lever is located on the side of the lower end of the pull rod and is slidably connected in the sliding groove. The upper end of the pull rod passes through the through hole, and the side of the upper end of the pull rod is embedded and slidably connected in the U-shaped structure.

4. The transmission device for the remote-controlled car according to claim 3, characterized in that: The upper end of the pull rod is provided with a movable head on its side, which is embedded and slidably connected in the loop structure.

5. The transmission device for the remote-controlled car according to claim 3, characterized in that: The gear, pull-down spring mechanism, support rod, and swing rod are all in pairs and are arranged symmetrically.

6. The transmission device for the remote-controlled car according to claim 5, characterized in that: The gear includes a first gear and a second gear, and the guide wheel includes a first guide wheel and a second guide wheel. The first guide wheel and the second guide wheel are located on the sides of the first gear and the second gear, respectively. The first guide wheel and the second guide wheel are arranged opposite to each other or back to back, and the first guide wheel and the second guide wheel are 180° apart.

7. The transmission device for the remote-controlled car according to claim 1, characterized in that: The cover plate is provided with a frustum, and one end of the swing rod can abut against the frustum.

8. The transmission device for the remote-controlled car according to claim 1, characterized in that: It also includes a transmission assembly, which is installed in the housing and whose output end is connected to a gear drive.

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