Gearbox with clutch function and machine animal toy

Abstract

The utility model relates to a toy technical field discloses a clutch function's wave box, including casing, motor, fixed in casing and have pivot, output shaft, rotatablely located in casing, first clutch gear, rotatablely located in casing, first transmission gear, with first clutch gear coaxial fixed and with output shaft gear drive, and along the first meshing surface of self axial one end, second clutch gear, with first clutch gear coaxial setting, the second meshing surface of second clutch gear towards first meshing surface one end forms, and along the first clutch gear displacement of self axial, to clutch adjustment second meshing surface with first meshing surface, reset spring, the one end of second clutch gear back to first meshing surface is pressed, makes second meshing surface and first meshing surface elastic engagement, second transmission gear, with second clutch gear coaxial fixed and with pivot gear drive. Its second meshing surface and first meshing surface can clutch adjustment, and motor is not easy to hold machine, plays the protection function.

Description

Technical Field

[0001] This utility model relates to the field of toy technology, and in particular to a gearbox with clutch function and a robotic animal toy. Background Technology

[0002] Robotic animal toys mainly refer to animal toys with limbs and trunks. These limbs and trunks are usually driven by a gearbox set in the main body, making them highly playable. The limbs and trunks refer to the legs, arms, etc., connected to the main body and able to swing under the drive of the gearbox.

[0003] For robotic animal toys, the gearbox is the core component driving the limbs' movement. The gearbox's main function is to change the speed and torque from the electric motor, and it can fix or gradually change the transmission ratio between the output and input shafts. Specifically, gearboxes in related technologies typically include an electric motor and a gear set. The motor's shaft is connected to the gear set, which regulates the speed and torque. Power is then output through the final output shaft after the gear set changes speed. The gear set usually consists of multiple sequentially fitted gears, which adjust the transmission ratio to regulate the electric motor's speed and torque.

[0004] However, its gearbox also has many problems. For example, when the gearbox motor drives the output shaft to rotate, if the robotic animal toy falls or its limbs are moved in the opposite direction of the direction the motor drives the limbs to swing, that is, when the output shaft is subjected to a suppressive torque opposite to the direction it is driven to rotate, it is easy to suppress the normal rotation of the motor, which in turn causes the motor to stall and burn out. Utility Model Content

[0005] Therefore, it is necessary to provide a gearbox and robotic animal toy with a clutch function to address the existing problems, so that the motor is less prone to stalling.

[0006] The first aspect of this application provides a gearbox with a clutch function, comprising:

[0007] case;

[0008] An electric motor, fixed to the housing, the electric motor having a rotating shaft;

[0009] The output shaft is rotatably mounted on the housing;

[0010] The first clutch gear is rotatably mounted on the housing;

[0011] The first transmission gear is coaxially and fixedly connected to the first clutch gear. The first transmission gear is configured to drive the output shaft gear. One end of the first clutch gear along its own axial direction has a first meshing surface.

[0012] The second clutch gear is coaxially arranged with the first clutch gear. A second meshing surface is formed at one end of the second clutch gear facing the first meshing surface. The second clutch gear can be displaced relative to the first clutch gear along its own axial direction so that the second meshing surface can mesh with or disengage from the first meshing surface.

[0013] A return spring is disposed in the housing and presses against one end of the second clutch gear opposite to the first meshing surface, so that the second meshing surface elastically engages with the first meshing surface;

[0014] The second transmission gear is coaxially and fixedly connected to the second clutch gear, and the second transmission gear is configured to drive the shaft gear.

[0015] In some embodiments, the first meshing surface and the second meshing surface cooperate to form a crown gear clutch structure.

[0016] In some embodiments, the first meshing surface includes a plurality of first teeth arranged radially around the axis of the first clutch gear.

[0017] In some embodiments, the second meshing surface includes a plurality of second teeth arranged radially around the axis of the second clutch gear.

[0018] In some implementations, the gearbox with clutch function also includes:

[0019] A support shaft is rotatably mounted on the housing, and the first clutch gear and the first transmission gear are coaxially fixed to the support shaft;

[0020] An abutment block is disposed on the support shaft;

[0021] The return spring is sleeved on the support shaft and is clamped between the abutment block and the second clutch gear.

[0022] In some implementations, the gearbox with clutch function also includes:

[0023] The intermediate gear is rotatably mounted on the housing via a transfer shaft and meshes with the second transmission gear;

[0024] The reduction gear set has a power input shaft and a power output shaft. The power input shaft is coaxially and fixedly connected to the rotating shaft, and the power output shaft is coaxially and fixedly connected to the adapter shaft.

[0025] In some embodiments, the diameter of the intermediate gear is smaller than the diameter of the second transmission gear.

[0026] In some embodiments, the reduction gear set includes a first gear, a second gear, a third gear, a fourth gear, a fifth gear, and a sixth gear;

[0027] The first gear is coaxially fixed to the rotating shaft, the second gear is rotatably disposed on the housing and meshes with the first gear, the third gear is coaxially fixedly connected to the second gear, the fourth gear is rotatably disposed on the housing and meshes with the third gear, the fifth gear is coaxially fixedly connected to the fourth gear, and the sixth gear is rotatably disposed on the housing and meshes with the fifth gear. The diameter of the first gear is smaller than the diameter of the second gear, the diameter of the second gear is larger than the diameter of the third gear, the diameter of the third gear is smaller than the diameter of the fourth gear, the diameter of the fourth gear is larger than the diameter of the fifth gear, and the diameter of the fifth gear is smaller than the diameter of the sixth gear.

[0028] In some implementations, the gearbox with clutch function also includes:

[0029] An output gear is coaxially fixed to the output shaft, and the output gear meshes with the first transmission gear;

[0030] The diameter of the first transmission gear is smaller than the diameter of the output gear.

[0031] A second aspect of this application provides a robotic animal toy comprising:

[0032] body;

[0033] The gearbox with clutch function as described in any of the above embodiments is fixed to the body;

[0034] The limb is connected to the output shaft of the gearbox with clutch function.

[0035] The beneficial effects of this utility model are:

[0036] In the gearbox of this invention, a first clutch gear is rotatably mounted on the housing; a first transmission gear is coaxially and fixedly connected to the first clutch gear, the first transmission gear being configured to drive the output shaft gear, and one end of the first clutch gear along its own axial direction having a first meshing surface; a second clutch gear is coaxially mounted to the first clutch gear, and one end of the second clutch gear facing the first meshing surface has a second meshing surface, the second clutch gear being displaceable relative to the first clutch gear along its own axial direction to allow the second meshing surface to mesh with or disengage from the first meshing surface; a return spring is mounted on the housing and presses against one end of the second clutch gear facing away from the first meshing surface, so that the second meshing surface elastically meshes with the first meshing surface; a second transmission gear is coaxially and fixedly connected to the second clutch gear, and the second transmission gear being configured to drive the rotating shaft gear.

[0037] Under normal transmission conditions, the second meshing surface and the first meshing surface are engaged by the counteracting force of the return spring, thereby driving the output shaft to rotate. When the output shaft is subjected to a suppressive torque opposite to its driven rotation, the second meshing surface and the first meshing surface disengage, thus reducing the suppression of the motor shaft's rotation. Therefore, the engagement and disengagement adjustment via the second and first meshing surfaces helps prevent the output shaft from being subjected to a suppressive torque opposite to its driven rotation during motor operation, thus preventing the motor from stalling and providing a protective function. Attached Figure Description

[0038] 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 one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0039] Figure 1 A three-dimensional schematic diagram of a gearbox with clutch function provided for some embodiments of this utility model;

[0040] Figure 2 An exploded view of a gearbox with clutch function provided for some embodiments of this utility model;

[0041] Figure 3 A schematic diagram of a gearbox with clutch function concealed housing provided for some embodiments of this utility model. Figure 1 ;

[0042] Figure 4 A schematic diagram of a gearbox with clutch function concealed housing provided for some embodiments of this utility model. Figure 2 ;

[0043] Figure 5 A schematic diagram of a gearbox with clutch function concealed housing provided for some embodiments of this utility model. Figure 3 ;

[0044] Figure 6 A schematic diagram of a gearbox with clutch function concealed housing provided for some embodiments of this utility model. Figure 4 ;

[0045] Figure 7 One of the perspective views of a robotic animal toy provided for some embodiments of this utility model.

[0046] Figure 8 The second perspective view of a robotic animal toy provided for some embodiments of this utility model.

[0047] Figure label:

[0048] 1. Housing; 2. Motor; 21. Shaft; 3. First clutch gear; 31. First meshing surface; 4. First transmission gear; 5. Second clutch gear; 51. Second meshing surface; 6. Return spring; 7. Second transmission gear; 8. Support shaft; 9. Abutment block; 10. Intermediate gear; 20. Adapter shaft; 30. Output gear; 40. Output shaft;

[0049] 100. Reduction gear set; 110. First gear; 120. Second gear; 130. Third gear; 140. Fourth gear; 150. Fifth gear; 160. Sixth gear;

[0050] 1000, fuselage; 2000, gearbox with clutch function; 3000, limbs. Detailed Implementation

[0051] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In this utility model, unless otherwise explicitly specified and limited, a feature "above" or "below" the second feature may mean that the feature is in direct contact with the second feature or indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature may mean that the feature is directly above or diagonally above the second feature, or simply indicates that the feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "beneath" the second feature may mean that the feature is directly below or diagonally below the second feature, or simply indicates that the feature is at a lower horizontal level than the second feature.

[0056] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0057] refer to Figures 1-6 The first aspect of this application provides a gearbox 2000 with a clutch function, which includes a housing 1, a motor 2, an output shaft 40, a first clutch gear 3, a first transmission gear 4, a second clutch gear 5, a return spring 6, and a second transmission gear 7; the motor 2 is fixed to the housing 1 and has a rotating shaft 21; the output shaft 40 is rotatably disposed on the housing 1; the first clutch gear 3 is rotatably disposed on the housing 1; the first transmission gear 4 is coaxially fixedly connected to the first clutch gear 3, and the first transmission gear 4 is configured to perform gear transmission with the output shaft 40; one end of the first clutch gear 3 along its own axial direction has a first engagement. Surface 31; The second clutch gear 5 is coaxially arranged with the first clutch gear 3. The end of the second clutch gear 5 facing the first meshing surface 31 forms a second meshing surface 51. The second clutch gear 5 can be displaced relative to the first clutch gear 3 along its own axial direction so that the second meshing surface 51 can mesh with or disengage from the first meshing surface 31; The return spring 6 is arranged on the housing 1 and presses against the end of the second clutch gear 5 facing away from the first meshing surface 31 so that the second meshing surface 51 can elastically mesh with the first meshing surface 31; The second transmission gear 7 is coaxially fixedly connected to the second clutch gear 5. The second transmission gear 7 is configured to drive the rotating shaft 21.

[0058] Alternatively, the first transmission gear 4 and the first clutch gear 3 can be designed as a single piece, or the second transmission gear 7 and the second clutch gear 5 can also be designed as a single piece.

[0059] Under normal transmission conditions, the second meshing surface 51 and the first meshing surface 31 are engaged with each other by the counteracting force of the return spring 6, thereby driving the output shaft 40 to rotate. When the output shaft 40 is subjected to a suppressive torque opposite to the direction of its driven rotation, the second meshing surface 51 and the first meshing surface 31 will disengage, thereby reducing the suppression of the rotation of the motor 2's shaft 21. Therefore, the engagement and disengagement adjustment through the second meshing surface 51 and the first meshing surface 31 helps prevent the output shaft 40 from being subjected to a suppressive torque opposite to the direction of its driven rotation during motor 2 operation, thus preventing the motor 2 from stalling and providing a protective function.

[0060] refer to Figures 1-6In some embodiments, the first meshing surface 31 and the second meshing surface 51 cooperate to form a crown gear clutch structure, which is simple in structure and easy to process and manufacture.

[0061] In some implementations, reference Figures 1-6 The first meshing surface 31 includes a plurality of first gear teeth arranged in a radial pattern around the axis of the first clutch gear 3. This facilitates transmission and, when there is excessive torque, makes it easy for the second meshing surface 51 to disengage and slide relative to the first meshing surface 31, thereby providing a protective function.

[0062] refer to Figures 1-6 In some embodiments, the second meshing surface 51 includes a plurality of second gear teeth arranged radially around the axis of the second clutch gear 5. This facilitates transmission and, when there is excessive torque, makes it easy for the second meshing surface 51 to disengage and slide relative to the first meshing surface 31, thereby providing a protective function.

[0063] In some implementations, reference Figures 1-5 The gearbox 2000 with clutch function also includes a support shaft 8 and an abutment block 9. The support shaft 8 is rotatably mounted on the housing 1, and the first clutch gear 3 and the first transmission gear 4 are coaxially fixed to the support shaft 8; the abutment block 9 is disposed on the support shaft 8; wherein, the return spring 6 is sleeved on the support shaft 8, and the return spring 6 is clamped between the abutment block 9 and the second clutch gear 5. The size of the abutment block 9 can be flexibly designed so that the return spring 6 is clamped between the abutment block 9 and the second clutch gear 5 with the expected compression force, so as to provide an elastic return force that allows the second meshing surface 51 to elastically mesh with the first meshing surface 31.

[0064] refer to Figures 1-6 In some embodiments, the gearbox 2000 with clutch function also includes a transfer gear 10 and a reduction gear set 100. The transfer gear 10 is rotatably mounted on the housing 1 via a transition shaft 20 and meshes with the second transmission gear 7; the reduction gear set 100 has a power input shaft and a power output shaft. The power input shaft is coaxially and fixedly connected to the rotating shaft 21, and the power output shaft is coaxially and fixedly connected to the transition shaft 20. Thus, the reduction gear set 100 is used to achieve speed reduction transmission, which helps to reduce the rotational speed of the output shaft 40 and increase the rotational torque of the output shaft 40.

[0065] In some implementations, reference Figures 1-5 The diameter of the intermediate gear 10 is smaller than that of the second transmission gear 7, which also serves to reduce speed. When combined with the reduction gear set 100, it can achieve further speed reduction.

[0066] refer to Figures 1-6In some embodiments, the reduction gear set 100 includes a first gear 110, a second gear 120, a third gear 130, a fourth gear 140, a fifth gear 150, and a sixth gear 160. The first gear 110 is coaxially fixed to the rotating shaft 21. The second gear 120 is rotatably mounted on the housing 1 and meshes with the first gear 110. The third gear 130 is coaxially fixedly connected to the second gear 120. The fourth gear 140 is rotatably mounted on the housing 1 and meshes with the third gear 130. The fifth gear 150 is coaxially fixedly connected to the fourth gear 140. The sixth gear 160 is rotatably mounted on the housing 1 and meshes with the fifth gear 150. The diameter of the first gear 110 is smaller than the diameter of the second gear 120, the diameter of the third gear 130 is smaller than the diameter of the fourth gear 140, and the diameter of the fifth gear 150 is smaller than the diameter of the sixth gear 160. The diameter of the second gear 120 is larger than the diameter of the third gear 130, and the diameter of the fourth gear 140 is larger than the diameter of the fifth gear 150. Its reduction gear set 100 adopts a multi-stage reduction design. Specifically, the first gear 110 and the second gear 120 achieve first-stage reduction, the third gear 130 and the fourth gear 140 achieve second-stage reduction, and the fifth gear 150 and the sixth gear 160 achieve third-stage reduction. In addition, the second gear 120 and the third gear 130 have the same angular velocity, but the diameter of the second gear 120 is larger than the diameter of the third gear 130, thus reducing the linear velocity of the third gear 130 and achieving transmission reduction. Similarly, the fourth gear 140 and the fifth gear 150 have the same angular velocity, but the diameter of the fourth gear 140 is larger than the diameter of the fifth gear 150, thus reducing the linear velocity of the fifth gear 150 and achieving transmission reduction. This can effectively reduce the rotational speed of the output shaft 40 and also help increase the rotational torque of the output shaft 40.

[0067] In some implementations, reference Figures 1-5 The gearbox 2000 with clutch function also includes an output gear 30. The output gear 30 is coaxially fixed to the output shaft 40 and meshes with the first transmission gear 4; wherein, the diameter of the first transmission gear 4 is smaller than the diameter of the output gear 30, thereby further reducing the speed of transmission.

[0068] refer to Figures 7-8 Other embodiments of this application also provide a robotic animal toy, which includes a body 1000, limbs 3000, and a gearbox 2000 with a clutch function as described in any of the above embodiments. The gearbox 2000 with the clutch function is fixed to the body 1000; the limbs 3000 are connected to the output shaft 40 of the gearbox 2000 with the clutch function. Preferably, the robotic animal toy can be a robotic dog, and the four limbs 3000 of the robotic dog constitute its four legs.

[0069] Finally, it should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments illustrate only one implementation of the present utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the appended claims.

Claims

1. A gearbox with a clutch function, characterized in that, include: Shell (1); An electric motor (2) is fixed to the housing (1), and the electric motor (2) has a rotating shaft (21); The output shaft (40) is rotatably mounted on the housing (1); The first clutch gear (3) is rotatably mounted on the housing (1); The first transmission gear (4) is coaxially fixedly connected to the first clutch gear (3). The first transmission gear (4) is configured to drive the output shaft (40) with a gear. The first clutch gear (3) has a first meshing surface (31) at one end along its own axial direction. The second clutch gear (5) is coaxially arranged with the first clutch gear (3). The second clutch gear (5) has a second meshing surface (51) at one end facing the first meshing surface (31). The second clutch gear (5) can be displaced relative to the first clutch gear (3) along its own axial direction so that the second meshing surface (51) meshes with or disengages from the first meshing surface (31). A return spring (6) is disposed on the housing (1) and presses against one end of the second clutch gear (5) facing away from the first meshing surface (31) so that the second meshing surface (51) and the first meshing surface (31) are elastically engaged; The second transmission gear (7) is coaxially and fixedly connected to the second clutch gear (5), and the second transmission gear (7) is configured to drive the rotating shaft (21) gear.

2. The gearbox with clutch function according to claim 1, characterized in that, The first meshing surface (31) and the second meshing surface (51) cooperate to form a crown gear clutch structure.

3. The gearbox with clutch function according to claim 1, characterized in that, The first meshing surface (31) includes a plurality of first gear teeth arranged in a radial pattern around the axis of the first clutch gear (3).

4. The gearbox with clutch function according to claim 2, characterized in that, The second meshing surface (51) includes a plurality of second gear teeth arranged in a radial pattern around the axis of the second clutch gear (5).

5. The gearbox with clutch function according to claim 1, characterized in that, Also includes: A support shaft (8) is rotatably mounted on the housing (1), and the first clutch gear (3) and the first transmission gear (4) are coaxially fixed to the support shaft (8). Abutting block (9) is disposed on the support shaft (8); The reset spring (6) is sleeved on the support shaft (8) and is sandwiched between the abutment block (9) and the second clutch gear (5).

6. The gearbox with clutch function according to claim 1, characterized in that, Also includes: The intermediate gear (10) is rotatably mounted on the housing (1) via the adapter shaft (20) and meshes with the second transmission gear (7); The reduction gear set (100) has a power input shaft and a power output shaft. The power input shaft is coaxially and fixedly connected to the rotating shaft (21), and the power output shaft is coaxially and fixedly connected to the adapter shaft (20).

7. The gearbox with clutch function according to claim 6, characterized in that, The diameter of the intermediate gear (10) is smaller than the diameter of the second transmission gear (7).

8. The gearbox with clutch function according to claim 6, characterized in that, The reduction gear set (100) includes a first gear (110), a second gear (120), a third gear (130), a fourth gear (140), a fifth gear (150), and a sixth gear (160). The first gear (110) is coaxially fixed to the rotating shaft (21), the second gear (120) is rotatably disposed on the housing (1) and meshes with the first gear (110), the third gear (130) is coaxially fixedly connected to the second gear (120), the fourth gear (140) is rotatably disposed on the housing (1) and meshes with the third gear (130), the fifth gear (150) is coaxially fixedly connected to the fourth gear (140), and the sixth gear (160) is rotatable. The first gear (110) is mounted on the housing (1) and meshes with the fifth gear (150). The diameter of the first gear (110) is smaller than the diameter of the second gear (120). The diameter of the second gear (120) is larger than the diameter of the third gear (130). The diameter of the third gear (130) is smaller than the diameter of the fourth gear (140). The diameter of the fourth gear (140) is larger than the diameter of the fifth gear (150). The diameter of the fifth gear (150) is smaller than the diameter of the sixth gear (160).

9. The gearbox with clutch function according to claim 1, characterized in that, Also includes: An output gear (30) is coaxially fixed to the output shaft (40), and the output gear (30) meshes with the first transmission gear (4); The diameter of the first transmission gear (4) is smaller than the diameter of the output gear (30).

10. A robotic animal toy, characterized in that, include: fuselage (1000); The gearbox (2000) with clutch function as described in any one of claims 1-9, wherein the gearbox (2000) with clutch function is fixed to the body (1000); The limb (3000) is connected to the output shaft (40) of the gearbox (2000) with clutch function.

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