Power mechanism of cantilever of toy engineering vehicle

Abstract

The utility model provides a power mechanism for a cantilever of a toy engineering vehicle, which comprises a first power mechanism for driving a large arm to rotate, a second power mechanism for driving a small arm to rotate, and a third power mechanism for driving an operation tool to rotate, the first power mechanism, the second power mechanism and the third power mechanism are all provided with power cases of the same structure, each power case comprises a case body, a motor and a tooth system, the motor and the tooth system are fixedly installed in the case body, the tooth system is driven by the motor to rotate, and the tooth system comprises a clutch gear set and a driving gear; the first power mechanism further comprises a first transmission gear meshed with the driving gear of the power case, the second power mechanism further comprises a second transmission gear meshed with the driving gear of the power case, and the third power mechanism further comprises a third transmission gear meshed with the driving gear of the power case.

Description

Technical Field

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

[0002] Commercially available toy construction vehicles typically feature simulated engineering operation functions. Common toy construction vehicles include excavators, blasters, and grabbers, generally achieving these functions through a cantilevered arm equipped with tools such as a bucket, blasting hammer, or grabber. Chinese patent CN220360710U provides a toy digging device that uses a boom drive motor to drive the boom rotation, a forearm drive motor to drive the forearm rotation, and a bucket drive motor to drive the bucket rotation, allowing the digging assembly to rotate in three segments. This greatly enriches the toy's digging actions and enables effective digging. However, the boom drive motor, forearm drive motor, and bucket drive motor of this toy digging device use different power mechanisms for drive control, resulting in a complex power mechanism structure, increased production costs, and an inability to achieve better economic benefits. 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 power mechanism for the cantilever of a toy engineering vehicle.

[0004] To achieve the aforementioned objectives, this utility model provides a power mechanism for a toy engineering vehicle cantilever, including a first power mechanism for driving the upper arm to rotate, a second power mechanism for driving the lower arm to rotate, and a third power mechanism for driving the working tool to rotate. The first, second, and third power mechanisms all have a power housing with the same structure. The power housing includes a housing body and a motor and a gear system fixedly installed inside the housing body. The gear system is driven to rotate by the motor and includes a clutch gear set and a drive gear. The first power mechanism also includes a first transmission gear meshing with the drive gear of its power housing, the second power mechanism also includes a second transmission gear meshing with the drive gear of its power housing, and the third power mechanism also includes a third transmission gear meshing with the drive gear of its power housing.

[0005] As a preferred embodiment, the second transmission gear is an incomplete gear, and the transmission ratio between the first transmission gear and the gear system is greater than the transmission ratio between the third transmission gear and the gear system.

[0006] As a preferred embodiment, the transmission ratio of the gear system ranges from 119 to 120, the transmission ratio between the first transmission gear and the gear system ranges from 405 to 406, the transmission ratio between the second transmission gear and the gear system is equal to or slightly less than the transmission ratio between the first transmission gear and the gear system, and the transmission ratio between the third transmission gear and the gear system ranges from 178 to 179.

[0007] As a preferred embodiment, the power housings of the first power mechanism and the second power mechanism are both installed inside the upper arm of the toy engineering vehicle. The first transmission gear is rotatably connected to the body of the toy engineering vehicle. The second transmission gear and the third power mechanism are both installed inside the lower arm of the toy engineering vehicle. The third transmission gear is movably connected to the working tool of the toy engineering vehicle through a connecting rod.

[0008] As a preferred embodiment, the housing includes a detachable and fixed first housing and a second housing, with an elongated cavity formed between the first housing and the second housing. The motor is fixedly installed at one end of the cavity, and a notch is provided at the other end of the cavity. The drive gear is rotatably installed at the edge of the notch, so that part of the drive gear can be exposed on the housing.

[0009] As a preferred embodiment, the clutch gear set includes a first clutch gear and a second clutch gear connected coaxially. The engagement point of the first clutch gear and the second clutch gear is provided with mutually meshing sawtooth surfaces. The first clutch gear is elastically and movablely connected to its rotating shaft by an elastic element.

[0010] As a preferred embodiment, the gear system further includes a first gear set that is driven between the first clutch gear and the motor, and a second gear set that is driven between the second clutch gear and the drive gear.

[0011] As a preferred embodiment, the first gear set includes a first gear fixed to the output shaft of the motor, and a second gear meshing with the first gear and the first clutch gear respectively.

[0012] As a preferred embodiment, the second gear set includes a third gear meshing with the second clutch gear, and a fourth gear meshing with the third gear and the drive gear respectively.

[0013] Therefore, based on the technical means of this utility model, the effects that this utility model can achieve are briefly described as follows: In the power mechanism of the toy engineering vehicle cantilever provided by this utility model, the power housings of the first power mechanism, the second power mechanism, and the third power mechanism all adopt the same structure, which can effectively reduce the cost of additional mold production required due to the use of different structures, and achieve better economic benefits. Moreover, the first power mechanism, the second power mechanism, and the third power mechanism are respectively meshed with the drive gears of their power housings through the first transmission gear, the second transmission gear, and the third transmission gear, and driven by their respective drive gears, they can correspondingly achieve the purpose of driving the upper arm to rotate, driving the lower arm to rotate, and driving the working tool to rotate. Therefore, the power mechanism of the toy engineering vehicle cantilever provided by this utility model can still achieve the corresponding functional purpose under the premise of using a lower cost power housing, ensuring that the engineering vehicle cantilever can perform effective simulation operations, and has the advantages of reliable function and lower production cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first power mechanism in a preferred embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the second power mechanism in a preferred embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the third power mechanism in a preferred embodiment of the present invention.

[0017] Figure 4 for Figure 1 Exploded view of the power unit chassis.

[0018] Figure 5 for Figure 4 A schematic diagram of the internal structure of the power unit chassis.

[0019] In the diagram: 1: Power unit housing; 11: Housing; 111: First housing; 112: Second housing; 113: Cavity; 114: Notch; 12: Motor; 13: Gear system; 131: Clutch gear set; 1311: First clutch gear; 1312: Second clutch gear; 1313: Serrated surface; 132: Drive gear; 133: First gear set; 1331: First gear; 1332: Second gear; 134: Second gear set; 1341: Third gear; 1342: Fourth gear; 2: First transmission gear; 3: Second transmission gear; 4: Third transmission gear. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] Please refer to the following at the same time Figure 1-5 This embodiment provides a power mechanism for the cantilever of a toy engineering vehicle, including a first power mechanism for driving the upper arm to rotate, a second power mechanism for driving the lower arm to rotate, and a third power mechanism for driving the working tool to rotate. It is understood that the first, second, and third power mechanisms all have the same power housing 1. This configuration effectively reduces the cost of additional mold production required due to different structures, achieving better economic benefits.

[0023] The power housing 1 includes a housing 11 and a motor 12 and a gear train 13 fixedly installed inside the housing 11. The housing 11 includes a detachably fixed first shell 111 and a second shell 112, with an elongated cavity 113 formed between the first shell 111 and the second shell 112. The motor 12 is fixedly installed at one end of the cavity 113, and a notch 114 is provided at the other end of the cavity 113. A drive gear of the gear train 13 is rotatably installed at the edge of the notch 114, so that part of the drive gear can be exposed on the housing 11, thereby allowing the drive gear to directly mesh with other power mechanisms outside the housing 11 to drive the two meshing parts to rotate relative to each other.

[0024] The gear system 13 is driven to rotate by the motor 12. In this embodiment, the gear system 13 includes a clutch gear set 131, a drive gear 132, a first gear set 133 that is connected between the clutch gear set 131 and the motor 12, and a second gear set 134 that is connected between the clutch gear set 131 and the drive gear 132. It can be understood that the clutch gear set 131 includes a first clutch gear 1311 and a second clutch gear 1312 that are coaxially connected. The engagement point of the first clutch gear 1311 and the second clutch gear 1312 is provided with a sawtooth surface 1313 that can mesh with each other. The first clutch gear 1311 is elastically and movablely connected to its rotating shaft by an elastic element. The clutch gear set 13 not only enables power transmission, but also allows the first clutch gear 1311 to continue rotating relative to the second clutch gear 1312 under the drive of the motor 12 when the drive gear 132 stops rotating due to external influences. This prevents the motor 12 from jamming and burning out, thus improving safety.

[0025] In this embodiment, the first gear set 133 includes a first gear 1331 fixed to the output shaft of the motor 12, and a second gear 1332 meshing with the first gear 1331 and the first clutch gear 1311 respectively. The second gear set 134 includes a third gear 1341 meshing with the second clutch gear 1312, and a fourth gear 1342 meshing with the third gear 1341 and the drive gear 132 respectively. It is understood that the clutch gear set 131, drive gear 132, second gear 1332, third gear 1341, and fourth gear 1342 all employ double gears with different numbers of teeth. Specifically, the large gear of the second gear 1332 meshes with the first gear 1331, and the small gear of the second gear 1332 meshes with the first clutch gear 1311 (large gear). The large gear of the third gear 1341 meshes with the second clutch gear 1312 (small gear), the small gear of the third gear 1341 meshes with the large gear of the fourth gear 1342, and the small gear of the fourth gear 1342 meshes with the large gear of the drive gear 132. This configuration makes the gear system 13 a reduction gear system. Specifically, the transmission ratio of the gear system 13 ranges from 119 to 120, allowing the gear system 13 to more easily coordinate with other power structures of the first, second, and third power mechanisms, resulting in a relatively reasonable driving force for speed change output.

[0026] In other embodiments, the gear system 13 may not include a first gear set 133 and / or a second gear set 134. The first gear set 133 may be adjusted to other numbers of gears, such as one or more than three, and similarly, the second gear set 134 may be adjusted to other numbers of gears, such as one or more than three.

[0027] The first power mechanism further includes a first transmission gear 2 meshing with the drive gear 132 of its power housing 1; the second power mechanism further includes a second transmission gear 3 meshing with the drive gear 132 of its power housing 1; and the third power mechanism further includes a third transmission gear 4 meshing with the drive gear 132 of its power housing 1. It can be understood that the second transmission gear 3 is an incomplete gear, the transmission ratio between the first transmission gear 2 and the gear system 12 is greater than the transmission ratio between the third transmission gear 4 and the gear system 13, and the transmission ratio between the second transmission gear 3 and the gear system 12 is equal to or slightly less than the transmission ratio between the first transmission gear 2 and the gear system 13, making the rotation of the toy engineering vehicle's cantilever easier to operate. Specifically, the transmission ratio between the first transmission gear 2 and the gear system 13 ranges from 405 to 406, and the transmission ratio between the third transmission gear 3 and the gear system 13 ranges from 178 to 179.

[0028] It should be noted that when a power mechanism needs to be installed inside the cantilever of the toy engineering vehicle, the power housings 1 of both the first and second power mechanisms are installed inside the upper arm of the toy engineering vehicle. The first transmission gear 2 is rotatably connected to the body of the toy engineering vehicle, and the second transmission gear 3 and the third power mechanism are installed inside the lower arm of the toy engineering vehicle. Finally, the third transmission gear 4 is movably connected to the working tool of the toy engineering vehicle via a connecting rod. It can be understood that since the power housings 1 and transmission gears of the first, second, and third power mechanisms are respectively located between the body and upper arm, upper arm and lower arm, and lower arm and working tool of the toy engineering vehicle cantilever, individually driving the motor 12 inside the corresponding power housing 1 can drive the corresponding transmission gear to rotate, thus achieving the joint rotation function.

[0029] 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 power mechanism of a toy engineering vehicle's boom, comprising a first power mechanism for driving a rotation of a large arm, a second power mechanism for driving a rotation of a small arm, and a third power mechanism for driving a rotation of a work tool, characterized in that, The first power mechanism, the second power mechanism and the third power mechanism all have power mechanism boxes with the same structure, the power mechanism box comprising a box body and a motor and a gear train fixedly installed in the box body, the gear train being driven to rotate by the motor, and the gear train comprising a clutch gear set and a drive gear; the first power mechanism further comprises a first transmission gear meshing with the drive gear of the power mechanism box thereof, the second power mechanism further comprises a second transmission gear meshing with the drive gear of the power mechanism box thereof, and the third power mechanism further comprises a third transmission gear meshing with the drive gear of the power mechanism box thereof.

2. The power mechanism for the jib of a toy construction vehicle of claim 1, wherein, The second transmission gear is an incomplete gear, and the transmission ratio of the first transmission gear to the gear train is greater than the transmission ratio of the third transmission gear to the gear train.

3. The power mechanism of the toy engineering vehicle's jib as claimed in claim 2, wherein, The transmission ratio of the gear train ranges from 119 to 120, the transmission ratio of the first transmission gear to the gear train ranges from 405 to 406, the transmission ratio of the second transmission gear to the gear train is equal to or slightly less than the transmission ratio of the first transmission gear to the gear train, and the transmission ratio of the third transmission gear to the gear train ranges from 178 to 179.

4. The power mechanism for the jib of a toy construction vehicle of claim 3, wherein, The power mechanism boxes of the first power mechanism and the second power mechanism are both installed in a large arm of a toy engineering vehicle, the first transmission gear is rotatably connected to a vehicle body of the toy engineering vehicle, the second transmission gear and the third power mechanism are both installed in a small arm of the toy engineering vehicle, and the third transmission gear is movably connected to a working tool of the toy engineering vehicle through a connecting rod.

5. The power mechanism for the jib of a toy construction vehicle of claim 4, wherein, The box body comprises a first shell and a second shell which are detachably fixed, a long-strip-shaped cavity is formed between the first shell and the second shell, the motor is fixedly installed at one end of the cavity, a notch is formed at the other end of the cavity, and the drive gear is rotatably installed at the edge of the notch, so that part of the drive gear can be exposed on the box body.

6. The power mechanism for the jib of a toy construction vehicle of claim 1, wherein, The clutch gear set comprises coaxially connected first and second clutch gears, the engagement between the first and second clutch gears is provided with sawtooth surfaces which can be meshed with each other, and the first clutch gear is elastically movably connected to its rotating shaft through an elastic member.

7. The power mechanism for the jib of a toy construction vehicle of claim 6, wherein, The gear train further comprises a first gear set drivingly connected between the first clutch gear and the motor, and a second gear set drivingly connected between the second clutch gear and the drive gear.

8. The power mechanism for the jib of a toy construction vehicle of claim 7, wherein, The first gear set comprises a first gear fixed to the output shaft of the motor, and a second gear meshingly connected with the first gear and the first clutch gear respectively.

9. The power mechanism for the jib of a toy construction vehicle of claim 7, wherein, The second gear set comprises a third gear meshingly connected with the second clutch gear, and a fourth gear meshingly connected with the third gear and the drive gear respectively.

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