A toy engineering vehicle rotating drive mechanism

Abstract

This utility model provides a rotating drive mechanism for a toy engineering vehicle, including a housing, a motor, and a drive gear set. The housing has a shaft hole at its end, and an installation groove is provided inside the housing corresponding to the shaft hole. The motor is fixed inside the housing. The drive gear set includes a first gear that is tightly fitted and fixed to the output shaft of the motor, a second gear that is rotatably installed in the installation groove and whose shaft can rotatably pass through the shaft hole, and a transmission gear set that is transmissionally connected between the first gear and the second gear. The second gear has a sector tooth integrally formed on its shaft, and the sector tooth can abut against the inner wall of the housing during rotation. The transmission gear set includes a first clutch tooth that is transmissionally connected to the first gear and a second clutch tooth that is transmissionally connected to the sector tooth. The first clutch tooth and the second clutch tooth are coaxially rotatably connected, and the first clutch tooth can engage with the second clutch tooth under the push of an elastic element.

Description

Technical Field

[0001] This utility model relates to the field of toy vehicle technology, and more particularly to a rotating drive mechanism for a toy engineering vehicle. Background Technology

[0002] Many children's engineering vehicle toys on the market have operating carriages that can be driven to rotate, but their driving method is generally achieved by the combination of limit switches and gear structures, which has the disadvantages of complex structure, easy reliance on switches, and easy damage. 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 rotating drive mechanism for a toy engineering vehicle.

[0004] To achieve the aforementioned objective, this utility model provides a toy engineering vehicle rotation drive mechanism, including a housing, a motor, and a drive gear set. The housing has a shaft hole at its end, and an mounting groove corresponding to the shaft hole is provided inside the housing. The motor is fixed inside the housing. The drive gear set includes a first gear tightly fitted and fixed to the output shaft of the motor, a second gear rotatably mounted in the mounting groove with its shaft rotatably passing through the shaft hole, and a transmission gear set connecting the first gear and the second gear. The second gear has a fan-shaped tooth integrally formed on its shaft, which can abut against the inner wall of the housing during rotation. The transmission gear set includes a first clutch tooth connected to the first gear and a second clutch tooth connected to the fan-shaped tooth. The first clutch tooth and the second clutch tooth are coaxially rotatably connected, and the first clutch tooth can engage with the second clutch tooth under the push of an elastic element.

[0005] As a preferred embodiment, the outer wall of the mounting groove extends outward and is provided with two limiting walls, each of which is in contact with the sector tooth, and a portion of the outer wall of the mounting groove and the two limiting walls constitute one end wall of the housing.

[0006] As a preferred embodiment, the housing has a clearance opening at the edge adjacent to one of the limiting walls.

[0007] As a preferred embodiment, a motor compartment is provided at the other end of the housing, and at least one heat dissipation hole is provided on the wall of the motor compartment, which is used to fix the motor.

[0008] As a preferred embodiment, the housing includes a detachable and fixed first housing and a second housing, wherein the first housing and the second housing are fixedly connected by at least one of a snap-fit ​​structure, a threaded fastening structure, and an insertion structure.

[0009] As a preferred embodiment, the transmission gear set further includes a first transmission group that is transmissionally connected between the first gear and the first clutch tooth, and a second transmission group that is transmissionally connected between the sector tooth and the second clutch tooth, wherein both the first transmission group and the second transmission group include at least one gear that is sequentially meshed.

[0010] As a preferred embodiment, the first transmission group includes three first double gears with identical structures, wherein the large gear of any first double gear meshes with the small gear of the adjacent first double gear, and the transmission ratio of the first gear, the first transmission group, and the first clutch gear is greater than one.

[0011] As a preferred embodiment, the second transmission group includes two second double gears with the same structure, the large gear and small gear of two adjacent second double gears meshing, and the transmission ratio of the second clutch tooth, the second transmission group and the sector tooth is greater than one.

[0012] Therefore, based on the technical means of this utility model, the effects that this utility model can achieve are briefly described as follows: The toy engineering vehicle rotation drive mechanism provided by this utility model allows the shaft of the second gear to rotate through the shaft hole for easy connection to the toy engineering vehicle. Simultaneously, a sector tooth is integrally formed on the shaft of the second gear, allowing the sector tooth to contact and connect with the inner wall of the housing during rotation, achieving a limiting purpose. Furthermore, to ensure the safety of the motor and drive gear set, a first clutch tooth and a second clutch tooth engagement structure are provided in the transmission gear set, allowing the motor to continue rotating even when the sector tooth rotates to any limiting position. At this time, the first and second clutch teeth continuously collide and produce sound to serve as a warning. Thus, the drive mechanism provided by this utility model has the advantages of simple and compact structure, and it does not rely on a switch structure for rotation limiting, making it reliable, stable, and less prone to damage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0014] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the drive mechanism.

[0015] Figure 3 for Figure 1 A schematic diagram of the internal structure of the drive mechanism.

[0016] In the diagram: 1: Housing; 11: First housing; 111: Shaft hole; 12: Second housing; 121: Mounting groove; 122: Restriction wall; 101: Motor compartment; 102: Heat dissipation hole; 103: Clearance opening; 131: Snap-in hole; 132: Snap-in block; 141: Countersunk hole; 142: Connecting hole; 151: Insertion hole; 152: Insertion post; 2: Motor; 3: Drive gear set; 31: First gear; 32: Second gear; 321: Rotating shaft; 322: Sector tooth; 33: Transmission gear set; 331: First clutch tooth; 332: Second clutch tooth; 333: First transmission group; 3331: First double gear; 334: Second transmission group; 3341: Second double gear. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] Please refer to the following at the same time Figure 1-3This embodiment provides a toy engineering vehicle carriage rotation drive mechanism, including a housing 1, a motor 2 and a drive gear set 3, wherein the motor 2 and the drive gear set 3 are both installed inside the housing 1, and the drive gear set 3 is driven by the motor 2 to drive the external engineering vehicle carriage to perform a limited rotation.

[0020] The housing 1 includes a detachable and fixed first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fixedly connected by at least one of a snap-fit ​​structure, a threaded fixing structure, and a mating structure. In this embodiment, the first housing 11 and the second housing 12 are fixed using the above three structures. Specifically, the outer periphery of the first housing 11 is provided with a plurality of snap-fit ​​holes 131, at least one countersunk hole 141, and at least one mating hole 151 at intervals. The outer periphery of the second housing 12 is provided with a corresponding number of snap-fit ​​blocks 132, connecting holes 142, and mating posts 152 at corresponding positions. The snap-fit ​​holes 131 can be snapped onto the snap-fit ​​blocks 132, the countersunk holes 141 and the connecting holes 142 can be tightly fixed by screws or other threaded components, and the mating posts 152 can be inserted into the mating holes 151. Of course, in other embodiments, the first housing 11 and the second housing 12 can be fixed using any one or any two of the above three structures.

[0021] It is understood that the first housing 11 has a shaft hole 111 at its end, and the second housing 12 has a mounting groove 121 corresponding to the shaft hole 111 inside. Two limiting walls 122 extend outward from the outer wall of the mounting groove 121. Each limiting wall 122 can abut against the sector teeth of the drive gear set 3, thereby limiting the rotation angle of the sector teeth. Furthermore, a portion of the outer wall of the mounting groove 121 and the two limiting walls 122 constitute one end wall of the housing 1, meaning the sector teeth are located at the end of the housing 1. A motor compartment 101 is provided at the other end of the housing 1. At least one heat dissipation hole 102 is provided on the wall of the motor compartment 101, which is used to fix the motor 2. When the motor 2 is fixedly installed in the motor compartment 101, the heat dissipation hole 12 helps with heat dissipation. In this embodiment, a clearance opening 103 is provided at the edge adjacent to one of the limiting walls 122 of the housing 1. The clearance opening 103 allows the sector teeth to rotate and protrude outside the housing 1, helping to reduce the housing space required for housing 1. Obviously, in other embodiments, the edge of the housing 1 may not have a clearance opening 103, and the space inside the housing 1 will meet the rotation range requirements of the sector teeth.

[0022] The drive gear set 3 includes a first gear 31 that is tightly fitted and fixed to the output shaft of the motor 2, a second gear 32 that is rotatably mounted in the mounting groove 121 and whose rotating shaft 321 can rotatably pass through the shaft hole 111, and a transmission gear set 33 that is transmissionally connected between the first gear 31 and the second gear 32. The rotating shaft 321 of the second gear 32 is integrally formed with sector teeth 322, which can abut against any of the limiting walls 122 during rotation, thereby limiting the rotation angle. The transmission gear set 33 includes a first clutch tooth 331 that is transmissionally connected to the first gear 31 and a second clutch tooth 332 that is transmissionally connected to the sector teeth 322. The first clutch tooth 331 and the second clutch tooth 332 are coaxially rotatably connected, and the first clutch tooth 331 can engage with the second clutch tooth 332 under the push of an elastic element (such as a spring, not shown in the figure). It is understood that the first clutch tooth 331 and the second clutch tooth 332 are engaged when the sector tooth 322 has not reached the limit position. At this time, the second clutch tooth 332 can rotate with the first clutch tooth 331. However, when the sector tooth 322 reaches the limit position, the second clutch tooth 332 is restricted and cannot rotate. In this case, the first clutch tooth 331 can still rotate relative to the second clutch tooth 332 under the action of the elastic element, making the rotation of the motor 2 and the drive gear set 3 safer and more reliable. Moreover, the first clutch tooth 331 will continuously collide and make a sound during the rotation of the first clutch tooth 331 relative to the second clutch tooth 332, which can serve as an indication that the limit position has been reached, improving ease of use.

[0023] It is understood that the transmission gear set 33 also includes a first transmission group 333 connected between the first gear 31 and the first clutch tooth 331, and a second transmission group 334 connected between the sector tooth 322 and the second clutch tooth 332. Both the first transmission group 333 and the second transmission group 334 include at least one gear that meshes sequentially. In this embodiment, the first transmission group 333 includes three first double gears 3331 with identical structures. The large gear of any first double gear 3331 meshes with the small gear of an adjacent first double gear 3331, and the transmission ratio of the first gear 31, the first transmission group 333, and the first clutch tooth 331 is greater than one, forming a reduction gear structure. The second transmission group 34 includes two second double gears 3341 with identical structures. The large gears and small gears of two adjacent second double gears 3341 mesh, and the transmission ratio of the second clutch tooth 332, the second transmission group 334, and the sector tooth 322 is also greater than one, still forming a reduction gear structure. Obviously, in other embodiments, the first transmission group 333 and the second transmission group 334 may be composed of other numbers of double gears.

[0024] 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 toy construction vehicle bed rotation drive mechanism comprising a housing, a motor and a drive gear set, characterized in that, The housing has a shaft hole at one end, and a mounting groove is provided inside the housing corresponding to the shaft hole. The motor is fixed inside the housing. The drive gear set includes a first gear that is tightly fitted and fixed to the output shaft of the motor, a second gear that is rotatably installed in the mounting groove and whose shaft can rotatably pass through the shaft hole, and a transmission gear set that is transmissionally connected between the first gear and the second gear. The second gear has a sector tooth integrally formed on its shaft. The sector tooth can abut against the inner wall of the housing during rotation. The transmission gear set includes a first clutch tooth that is transmissionally connected to the first gear and a second clutch tooth that is transmissionally connected to the sector tooth. The first clutch tooth and the second clutch tooth are coaxially rotatably connected, and the first clutch tooth can engage with the second clutch tooth under the push of an elastic element.

2. The toy construction vehicle bed rotation drive mechanism of claim 1, wherein, The outer wall of the mounting groove extends outward and is provided with two limiting walls. Each limiting wall can abut against the fan-shaped tooth. A portion of the outer wall of the mounting groove and the two limiting walls constitute one end wall of the housing.

3. The toy construction vehicle bed rotation drive mechanism of claim 2, wherein, The housing has a clearance opening at the edge adjacent to one of the limiting walls.

4. The toy construction vehicle bed rotation drive mechanism of claim 1, wherein, The other end of the housing is provided with a motor compartment, and the wall of the motor compartment is provided with at least one heat dissipation hole. The motor compartment is used to fix and install the motor.

5. The toy construction vehicle bed rotation drive mechanism of claim 1, wherein, The housing includes a detachable and fixed first housing and a second housing, which are fixedly connected by at least one of a snap-fit ​​structure, a threaded fastening structure, and an insertion structure.

6. The toy construction vehicle bed rotation drive mechanism of claim 1, wherein, The transmission gear set further includes a first transmission group that is connected between the first gear and the first clutch tooth, and a second transmission group that is connected between the sector tooth and the second clutch tooth. Both the first transmission group and the second transmission group include at least one gear that is meshed with each other in sequence.

7. The toy construction vehicle bed rotation drive mechanism of claim 6, wherein, The first transmission group includes three first double gears with the same structure. The large gear of any first double gear meshes with the small gear of the adjacent first double gear. The transmission ratio of the first gear, the first transmission group and the first clutch gear is greater than one.

8. The toy construction vehicle bed rotation drive mechanism of claim 6, wherein, The second transmission group includes two second double gears with the same structure. The large gear and small gear of the two adjacent second double gears mesh with each other. The transmission ratio of the second clutch tooth, the second transmission group and the sector tooth is greater than one.

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