A drive structure suitable for a mini-climbing toy vehicle

Abstract

The utility model provides a kind of driving structure suitable for mini climbing toy car, cancel the setting traditional climbing transmission component, so that the occupied space of car body shell can be reduced, simultaneously by the cooperation of ball head rod and connecting rod to make mobile drive device and steering drive device can be relatively stably movably connected on car body shell, when toy car encounters obstacle in the process of advancing, since car body shell and mobile drive device and steering drive device are still movably connected, therefore car head and tail can still rotate up and down to cross obstacle, to make toy car can meet the racing demand under different environments, such as flat ground racing, obstacle climbing or cross-country. The driving structure provided by the utility model is simple and compact, high stability, small occupied space, more suitable for use in mini climbing toy car with smaller occupied space.

Description

Technical Field

[0001] This utility model relates to the field of toy vehicle technology, and more particularly to a drive structure suitable for mini climbing toy vehicles. Background Technology

[0002] There are various types of toy cars on the market. Chinese patent CN208511870U discloses a toy climbing and transforming car. By setting a climbing transmission component inside the car body, and utilizing the cooperation of a turntable and a spherical transmission component, the front and rear of the car are movably connected to the car body, allowing the front and rear to move up and down relative to the car body. This enables the toy car to meet the needs of competition in different environments. However, the structure of using a climbing transmission component to drive the turntable to rotate the spherical transmission component is relatively complex and occupies a large space, making it unsuitable for mini climbing toy cars that occupy relatively little space. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a drive structure suitable for mini climbing toy cars.

[0004] To achieve the aforementioned objectives, this utility model provides a drive structure suitable for a mini climbing toy car, including a car body shell and a moving drive device and a steering drive device respectively connected to the front and rear ends of the car body shell. The moving drive device includes a first device shell and a first motor and a first gear set fixed therein. A first ball joint rod protrudes from the outer wall of the first device shell and is movably connected to the car body shell. The first device shell is also rotatably connected to the car body shell via a first connecting rod. The first motor is driven by the first gear set, and the first gear set is fixedly connected to one set of wheels of the toy car via a rotating shaft. The steering drive device includes a second device shell and a second motor and a second gear set fixed therein. A second ball joint rod protrudes from the outer wall of the second device shell and is movably connected to the car body shell. The second device shell is also rotatably connected to the car body shell via a second connecting rod. The second motor is driven by the second gear set, and the second gear set is fixedly connected to another set of wheels of the toy car via a swing block.

[0005] As a preferred embodiment, the first device housing includes a first housing and a second housing and a third housing respectively fixed on opposite sides of the first housing. A first motor cavity for fixing the first motor is provided in the first housing on one side opposite to the second housing. A gear cavity for connecting the first gear set is formed between the first housing and the third housing.

[0006] As a preferred embodiment, the first housing is provided with the first ball joint rod, and the second housing and the third housing are respectively provided with slots that can be movably connected to the first connecting rod at their lower ends on the same side as the first ball joint rod; the first motor cavity is disposed opposite to the first ball joint rod at the top of the first device housing, and the rotating shaft is disposed opposite to the slot at the bottom of the first device housing.

[0007] As a preferred embodiment, the first gear set includes an output gear fixed on the output shaft of the first motor, a variable speed gear set meshing with the output gear, and a drive gear meshing with the variable speed gear set. The number of variable speed gear sets is at least two sets meshing sequentially. Each set of variable speed gear sets includes multiple double gears coaxially connected. The large and small gears of the double gears in each set of variable speed gear sets are alternately distributed, and the large and small gears of any two adjacent sets of variable speed gear sets mesh alternately.

[0008] As a preferred embodiment, the gear set consists of a first gear set and a second gear set. The first gear set consists of two first double gears, and the second gear set consists of the first double gear and the second double gear. The gear ratio of the large gear to the small gear of the first double gear is 18:7, and the gear ratio of the large gear to the small gear of the second double gear is 2:1. In the first gear set, the large gear of the first double gear meshes with the output gear, and their gear ratio is 3:1. In the second gear set, the small gear of the second double gear meshes with the drive gear, and their gear ratio is 3:5.

[0009] As a preferred embodiment, the second device housing includes a detachable and fixed upper housing and a lower housing. The upper housing is provided with a second motor cavity and a connecting window adjacent to each other. The second motor is fixedly connected in the second motor cavity. The lower housing is provided with a sliding groove opposite to the connecting window. The second gear set is installed in the sliding groove and the connecting window.

[0010] As a preferred embodiment, the second gear set includes a steering gear fixed on the output shaft of the second motor and a rack meshing with the steering gear. The steering gear is correspondingly disposed within the connection window, and the rack is movably connected to the slide groove with a swing block movably connected to each of its two ends.

[0011] As a preferred embodiment, two limiting protrusions are provided at intervals in the groove, and a sliding hole is provided on the rack that can be movably fitted into the two limiting protrusions. The inner wall of the sliding hole is in contact with the limiting protrusions.

[0012] As a preferred embodiment, the lower housing is provided with the second ball joint rod, and the lower housing has a locking block that can be movably connected to the second connecting rod protruding from its lower end on the same side as the second ball joint rod.

[0013] As a preferred embodiment, the second motor cavity is a through-hole structure at both ends, and the lower housing is provided with a retaining step at the port position corresponding to the second motor cavity, on which the second motor is retained and fixed.

[0014] Therefore, based on the technical means of this utility model, the effects that this utility model can achieve are briefly described as follows: The drive structure for mini climbing toy cars provided by this utility model eliminates the need for traditional climbing transmission components, thereby reducing the space occupied by the car body shell. Simultaneously, through the cooperation of the ball joint and connecting rod, the moving drive device and the steering drive device can be relatively stably connected to the car body shell. When the toy car encounters obstacles during its movement, because the car body shell remains movably connected to the moving drive device and the steering drive device, the front and rear of the car can still rotate up and down to cross the obstacles. This allows the toy car to meet the competition needs in different environments such as flat-ground racing, obstacle climbing, or off-road driving. The drive structure provided by this utility model is simple and compact, highly stable, and occupies little space, making it more suitable for use in mini climbing toy cars with limited space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0016] Figure 2 for Figure 1 Exploded view of the moving drive unit.

[0017] Figure 3 for Figure 1 A schematic diagram of the internal structure of the moving drive unit.

[0018] Figure 4 for Figure 1 Exploded view of the steering drive unit.

[0019] Figure 5 for Figure 1 A cross-sectional schematic diagram of the steering drive device.

[0020] In the diagram: 1: Vehicle body shell; 2: Motion drive device; 21: First device shell; 211: First shell; 2111: First motor cavity; 2112: First ball joint; 212: Second shell; 213: Third shell; 2131: Gear cavity; 2132: Slot; 22: First motor; 23: First gear set; 231: Output gear; 232: First gear set; 2321: First double gear; 233: Second gear set; 2331: Second double gear; 234: Drive gear; 24: First connecting rod; 25 3: Rotating shaft; 3: Steering drive device; 31: Second device housing; 311: Upper housing; 3111: Second motor cavity; 3112: Connecting window; 312: Lower housing; 3121: Second ball joint rod; 3122: Locking block; 3123: Locking step; 3124: Slide groove; 3125: Limiting protrusion; 32: Second motor; 33: Second gear set; 331: Steering gear; 332: Rack; 3321: Sliding hole; 3322: Connecting hole; 34: Second connecting rod; 35: Swing block; 351: Connecting shaft; 352: Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connections shown in the drawings are only for clear description and do not limit the connection method.

[0022] It should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer" are used to describe the directional or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, not to indicate that the device or element referred to must have a specific directional or positional relationship, and therefore should not be construed as a limitation of the present invention. It should be noted that when one component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present. It should be understood that terms such as "first" and "second" are only for the convenience of describing the technical solution of the present invention, and are not to indicate that the device or element referred to must have a specific order, and therefore should not be construed as a limitation of the present invention. 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 in this specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention.

[0023] Please refer to the following at the same time Figure 1-5 This embodiment provides a drive structure suitable for mini climbing toy cars, including a car body shell 1 and a moving drive device 2 and a steering drive device 3 respectively connected to the front and rear ends of the car body shell 1.

[0024] The mobile drive device 2 includes a first device housing 21, a first motor 22 fixed therein, and a first gear set 23. A first ball joint protrudes from the outer wall of the first device housing 21 and is movably connected to the vehicle body housing 1. The first device housing 21 is also rotatably connected to the vehicle body housing 1 via a first connecting rod 24. It is understood that there are two first connecting rods 24, located on opposite sides of the first ball joint. The cooperation between the first ball joint and the first connecting rod 24 allows the first device housing 21 to rotate relatively stably relative to the vehicle body housing 1. In this embodiment, the first device housing 21 includes a first housing 211 and a second housing 212 and a third housing 213 respectively fixed on opposite sides of the first housing 211. The two fixed housings are detachably fixed using threaded fasteners. A first motor cavity 2111 for fixing the first motor 22 is opened on the side of the first housing 211 opposite to the second housing 212. A gear cavity 2131 for connecting the first gear set 23 is formed between the first housing 211 and the third housing 213. In other embodiments, the first device housing 21 may adopt other housing structures, such as being composed of only two housings joined together, and the two fixed housings may also be fixed in other ways, such as by snap-fit ​​fixing.

[0025] The first housing 211 is provided with a first ball joint rod 2112. The second housing 212 and the third housing 213 each have a slot protruding from their lower ends on the same side as the first ball joint rod 2112, which can movably connect to the first connecting rod 24. It can be understood that the first motor cavity 2111 and the first ball joint rod 2112 are disposed opposite each other at the top of the first device housing 21, and the rotating shaft of the first gear set 23 is disposed opposite to the slot 2132 at the bottom of the first device housing 21. This arrangement can shift the overall center of gravity of the mobile drive device 2 upwards, increasing the torque generated by gravity, thereby making it easier for the mobile drive device 2 to rotate.

[0026] The first motor 22 is driven by the first gear set 23. The first gear set 23 is fixedly connected to one set of wheels of the toy car via a rotating shaft 25. When the first motor 22 is started, the first gear set 23 and the rotating shaft 25 drive the wheels to rotate, thereby achieving a straight-line function. The first gear set 23 includes an output gear 231 fixed to the output shaft of the first motor 22, a speed-changing gear set meshing with the output gear 231, and a drive gear 234 meshing with the speed-changing gear set. The speed-changing gear set consists of at least two sets meshing sequentially. Each set of speed-changing gear sets includes multiple coaxially connected double gears. The large and small gears of the double gears in each set of speed-changing gear sets are alternately distributed, and the large and small gears of any two adjacent sets of speed-changing gear sets mesh alternately. In this embodiment, the speed-changing gear set consists of a first speed-changing gear set 232 and a second speed-changing gear set 233. The first speed-changing gear set 232 consists of two first double gears 2321, and the second speed-changing gear set 233 consists of a first double gear 2321 and a second double gear 2331. The gear ratio of the large and small gears of the first double gear 2321 is 18:7, and the gear ratio of the large and small gears of the second double gear 2331 is 2:1. In the first speed-changing gear set 232, the large gear of the first double gear meshes with the output gear 231, and their gear ratio is 3:1. In the second speed-changing gear set 233, the small gear of the second double gear meshes with the drive gear 234, and their gear ratio is 3:5. The speed-changing gear set can be used to increase torque, improve transmission efficiency, reduce energy loss, make the transmission system more compact, and save installation space. The rotating shaft 25 is coaxially fixed to the drive gear 234 and rotates through the second housing 212 and the third housing 213. In other embodiments, the number of the gear sets can be adjusted as needed, and the number of double gears in each gear set can also be adjusted as needed. The structures of multiple double gears in the same gear set can be the same or different.

[0027] The steering drive device 3 includes a second device housing 31, a second motor 32 fixed therein, and a second gear set 33. A second ball joint protrudes from the outer wall of the second device housing 31 and is movably connected to the vehicle body housing 1. The second device housing 31 is also rotatably connected to the vehicle body housing 1 via a second connecting rod 34. It can be understood that there are two second connecting rods 34, located on either side of the second ball joint. The cooperation between the second ball joint and the second connecting rod 34 allows the second device housing 31 to rotate relatively stably up and down relative to the vehicle body housing 1.

[0028] The second device housing 32 includes a detachably fixed upper housing 311 and a lower housing 312. It is understood that the upper housing 311 and lower housing 312 are fixed using threaded fasteners, snap-fit ​​fasteners, or other methods. The upper housing 311 has a second motor cavity 3111 and a connecting window 3112 adjacent to each other. A second motor 32 is fixedly connected inside the second motor cavity 3111. The lower housing 312 has a sliding groove 3124 opposite to the connecting window 3112, and a second gear set 33 is installed within the sliding groove 3124 and the connecting window 3112. The lower housing 312 has a second ball joint rod 3121, and a locking block 3122 that can movably connect to a second connecting rod 34 protrudes from the lower end of the lower housing 312 on the same side as the second ball joint rod 3121. It is understood that the above arrangement can shift the overall center of gravity of the steering drive device 3 upwards, increasing the torque generated by gravity, thereby making it easier for the steering drive device 3 to rotate.

[0029] In this embodiment, the second motor cavity 3111 is a through-hole structure. The lower housing 312 has a retaining step 3123 at the port corresponding to the second motor cavity 3111. The retaining step 3123 retains and fixes the second motor 32, preventing it from moving out of the second motor cavity 3111 when it is fixedly connected inside the second motor cavity 3111. In other embodiments, the second motor cavity 31111 can be connected to the lower housing 312 to form an end-closed structure, thus eliminating the need for the retaining step 3123.

[0030] The second motor 32 is driven by the second gear set 33, which is fixedly connected to another set of wheels of the toy car via a swing block 35. That is, by starting the second motor 32, the second gear set 33 can be driven to rotate the swing block 35, thereby changing the direction of the wheels. The second gear set 33 includes a steering gear 331 fixed to the output shaft of the second motor 32, and a rack 332 meshing with the steering gear 331. The steering gear 331 is correspondingly disposed within the connecting window 3112, and the rack 332 is movably connected within the slide groove 3124. In this embodiment, two limiting protrusions 3125 are spaced apart within the slide groove 3124. The rack 332 has a sliding hole 3321 that is movably fitted within the two limiting protrusions 3125. The inner wall of the sliding hole 3321 is abutting against the limiting protrusions 3125 to limit the maximum movement distance of the rack 332 in a certain direction. In other embodiments, the mating structure of the sliding hole 3321 and the limiting protrusion 3125 can be replaced with others, such as the protrusion of the rack 332 and the limiting groove structure of the lower housing 311.

[0031] It is understood that a connecting hole 3322 is also provided at each end of the rack 332, so that a connecting shaft 351 of a swing block 35 can be movably connected to each end of the rack 332. The other connecting shaft 351 of the swing block 35 is rotatably connected between the upper housing 311 and the lower housing 312. A through hole 352 for rotatably fixing the wheel is also provided in the middle of the swing block 35. Therefore, when the swing block 35 swings accordingly as the rack 332 moves left and right, it can drive the wheel to achieve steering at the same time.

[0032] For clarity, certain features described in individual embodiments of the present invention may be used in combination in a single embodiment. Furthermore, various features of the present invention described in individual embodiments may also be used individually or in any suitable form in sub-combinations.

Claims

1. A drive structure suitable for a mini climbing toy car, comprising a car body shell and a movement drive device and a steering drive device respectively connected to the front and rear ends of the car body shell, characterized in that, The mobile drive device includes a first device housing and a first motor and a first gear set fixed therein. A first ball joint protrudes from the outer wall of the first device housing and is movably connected to the vehicle body housing. The first device housing is also rotatably connected to the vehicle body housing via a first connecting rod. The first motor is driven by the first gear set. The first gear set is fixedly connected to one set of wheels of the toy car via a rotating shaft. The steering drive device includes a second device housing and a second motor and a second gear set fixed therein. A second ball joint protrudes from the outer wall of the second device housing and is movably connected to the vehicle body housing. The second device housing is also rotatably connected to the vehicle body housing via a second connecting rod. The second motor is driven by the second gear set. The second gear set is fixedly connected to another set of wheels of the toy car via a swing block.

2. The drive structure for a mini climbing toy car as described in claim 1, characterized in that, The first device housing includes a first housing and a second housing and a third housing respectively fixed on opposite sides of the first housing. A first motor cavity for fixing the first motor is provided in the first housing on one side opposite to the second housing. A gear cavity for connecting the first gear set is formed between the first housing and the third housing.

3. The drive structure for a mini climbing toy car as described in claim 2, characterized in that, The first housing is provided with the first ball joint rod, and the second housing and the third housing are respectively provided with slots that can be movably connected to the first connecting rod at their lower ends on the same side as the first ball joint rod; the first motor cavity is disposed at the top of the first device housing opposite to the first ball joint rod, and the rotating shaft is disposed at the bottom of the first device housing opposite to the slot.

4. The drive structure for a mini climbing toy car as described in claim 2, characterized in that, The first gear set includes an output gear fixed on the output shaft of the first motor, a speed-changing gear set meshing with the output gear, and a drive gear meshing with the speed-changing gear set. The number of speed-changing gear sets is at least two sets meshing sequentially. Each set of speed-changing gear sets includes multiple double gears coaxially connected. The large and small gears of the double gears in each set of speed-changing gear sets are alternately distributed, and the large and small gears of any two adjacent sets of speed-changing gear sets mesh alternately.

5. The drive structure for a mini climbing toy car as described in claim 4, characterized in that, The speed-changing gear set consists of a first speed-changing gear set and a second speed-changing gear set. The first speed-changing gear set consists of two first double gears, and the second speed-changing gear set consists of the first double gear and the second double gear. The gear ratio of the large gear and the small gear of the first double gear is 18:7, and the gear ratio of the large gear and the small gear of the second double gear is 2:

1. In the first speed-changing gear set, the large gear of the first double gear meshes with the output gear, and the gear ratio between them is 3:

1. In the second speed-changing gear set, the small gear of the second double gear meshes with the drive gear, and the gear ratio between them is 3:

5.

6. The drive structure for a mini climbing toy car as described in claim 1, characterized in that, The second device housing includes a detachable and fixed upper housing and a lower housing. The upper housing has a second motor cavity and a connecting window adjacent to each other. The second motor is fixedly connected in the second motor cavity. The lower housing has a sliding groove opposite to the connecting window. The second gear set is installed in the sliding groove and the connecting window.

7. The drive structure for a mini climbing toy car as described in claim 6, characterized in that, The second gear set includes a steering gear fixed on the output shaft of the second motor and a rack meshing with the steering gear. The steering gear is correspondingly disposed in the connection window, and the rack is movably connected in the slide groove with a swing block movably connected to each end of the rack.

8. The drive structure for a mini climbing toy car as described in claim 7, characterized in that, Two limiting protrusions are spaced apart in the groove. The rack has a sliding hole that can be movably fitted into the two limiting protrusions. The inner wall of the sliding hole is in contact with the limiting protrusions.

9. The drive structure for a mini climbing toy car as described in claim 6, characterized in that, The lower housing is provided with the second ball joint rod, and the lower housing has a locking block that can be movably connected to the second connecting rod protruding from its lower end on the same side as the second ball joint rod.

10. The drive structure for a mini climbing toy car as described in claim 6, characterized in that, The second motor cavity is a through-hole structure at both ends. The lower housing is provided with a retaining step at the port position corresponding to the second motor cavity, and the second motor is retained and fixed on the retaining step.

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