Gear box

Abstract

The utility model discloses a gearbox. The gearbox comprises a shell, a lifting tooth assembly, a first output gear set, a second output gear set and a lifting driving gear set. The lifting tooth assembly comprises a lifting gear, and the lifting gear is only provided with a first gear part and a second gear part which are sequentially arranged. The lifting driving gear set can drive the lifting gear to move to a first position, a second position and a third position along the shaft. According to the gear box provided by the embodiment of the invention, the lifting driving gear set rotates to drive the lifting tooth assembly to switch three different positions, so that the first gear part and the second gear part in the lifting gear are driven to change the matching relation with the first output gear set and the second output gear set, and different transmission work is driven. Therefore, the action direction of the toy can be changed or different actions can be switched. The lifting gear is only provided with the first gear part and the second gear part which are arranged in sequence, so that the movement of various actions can be realized under the condition that fewer gears are used, the production cost of the machine is lower, and the size can be smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of toy gearboxes, and particularly relates to a gearbox. Background Art

[0002] Toys are mainly divided into static toys and dynamic toys. Static toys attract children with their appearance, color, etc. However, because of their lack of movement, it is difficult to arouse children's interest. Therefore, dynamic toys are becoming more and more popular among children. Most current electric toys use batteries as the energy source, and a small motor and a transmission gearbox are installed inside the toy to make the toy perform some actions.

[0003] However, some of the existing electric toys can only perform a single action. The toys with a single action perform relatively simple actions, lack of interest, and have insufficient attraction to children, and cannot meet the entertainment requirements of many children. If multiple different actions or actions in different directions are to be achieved, multiple sets of motors and multiple sets of transmission devices are required. Usually, multiple sets of gears or multiple motors need to cooperate, which will make the structure of the machine using gear transmission more complex and the volume larger, increasing the manufacturing cost. Or it is necessary to control the motor to rotate forward and backward, and the forward and backward rotation of the motor needs to be controlled by an IC chip, which will inevitably increase the manufacturing cost of the toy.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] The utility model provides a gearbox.

[0006] The present application provides the following technical solutions:

[0007] A gearbox, comprising:

[0008] A housing;

[0009] A lifting gear assembly, the lifting gear assembly includes a lifting gear disposed on a shaft of the housing, and the lifting gear only has a first gear portion and a second gear portion arranged in sequence;

[0010] A first output gear set, the first output gear set is disposed on the housing;

[0011] A second output gear set, the second output gear set is disposed on the housing;

[0012] A lifting drive gear set, the lifting drive gear set is disposed on the housing, and the lifting drive gear set is in transmission cooperation with the lifting gear assembly and can drive the lifting gear to move along the shaft to a first position, a second position and a third position;

[0013] When the lifting gear moves to the first position, the first gear portion of the lifting gear is in transmission cooperation with the first output gear set; when the lifting gear moves to the second position, the lifting gear is in transmission cooperation with the first output gear set through an intermediate gear provided on the housing; when the lifting gear moves to the third position, the second gear portion of the lifting gear is in transmission cooperation with the second output gear set.

[0014] Optionally, the lifting gear assembly includes a first gear and a second gear;

[0015] The first gear, the second gear and the lifting gear are arranged on the same shaft, and one of the first gear and the second gear is provided with multi-step grooves, and the other is provided with protrusions;

[0016] The lifting drive gear set is in transmission cooperation with the first gear and the second gear respectively, driving the first gear and the second gear to move relative to each other, so that the protrusions slide along the step grooves, the first gear pushes against the second gear, and the second gear pushes the lifting gear to move along the shaft, and the second gear and the lifting gear rotate synchronously;

[0017] The first gear portion is located on the side of the second gear portion close to the first gear;

[0018] The outer diameter of the second gear portion is greater than the outer diameter of the first gear portion.

[0019] Optionally, the number of teeth of the first gear and the second gear is different;

[0020] The output gears of the lifting drive gear set are respectively meshed with the first gear and the second gear to drive the first gear and the second gear to move relative to each other.

[0021] Optionally, the intermediate gear and the output gear of the lifting drive gear set are on the same shaft;

[0022] The intermediate gear includes a large gear portion and a small gear portion;

[0023] The small gear portion is meshed with the input gear of the first output gear set;

[0024] When the lifting gear moves to the first position, the first gear portion of the lifting gear is meshed with the input gear of the first output gear set; when the lifting gear moves to the second position, the second gear portion of the lifting gear is meshed with the large gear portion.

[0025] Optionally, the gearbox further includes a spring;

[0026] A groove is provided on the side of the lifting gear facing away from the first gear;

[0027] The spring is sleeved on a shaft passing through the lifting gear, and both ends thereof respectively abut against the housing and the bottom wall of the groove.

[0028] Optionally, the second gear has a gear portion and a convex housing located on the side of the gear portion away from the first gear, and the stepped groove is formed inside the convex housing;

[0029] A convex platform is arranged on one side of the lifting gear, and the convex platform has a flat end face and a circular ring face;

[0030] The flat end face is attached to the convex housing, and an arc surface is used for transition between the flat end face and the circular ring face;

[0031] The convex platform and the second gear are in limit fit.

[0032] Optionally, a polygonal slot is arranged on the side of the second gear where the convex housing is provided;

[0033] A polygonal plug post is arranged on the convex platform of the lifting gear;

[0034] The polygonal plug post is inserted into the polygonal slot.

[0035] Optionally, the second output gear set includes a third gear and a fourth gear;

[0036] Both the third gear and the fourth gear are arranged on the housing, and the third gear and the fourth gear are meshed with each other;

[0037] When the lifting gear moves to the third position, the second gear portion of the lifting gear is meshed with the third gear.

[0038] Optionally, the third gear has a third large gear portion and a third small gear portion;

[0039] The third large gear portion and the third small gear portion are sequentially arranged along the rotation axis of the third gear;

[0040] The third small gear portion is meshed with the fourth gear;

[0041] When the lifting gear moves to the third position, the second gear portion of the lifting gear is meshed with the third large gear portion of the third gear.

[0042] By adopting the above technical solutions, the present application has the following beneficial effects:

[0043] The gearbox provided by the embodiment of the present application includes a lifting gear component and a lifting drive gear set. The lifting gear component is in transmission connection with the lifting drive gear. When the lifting drive gear set rotates, it can drive the lifting gear component to switch to three different positions, thereby driving the first gear part and the second gear part in the lifting gear to change the cooperation relationship with the first output gear set and the second output gear set, and driving different transmission operations. Thus, the change of the movement direction of the toy or the switching of different actions is realized.

[0044] Moreover, the lifting gear of the lifting gear component only has a first gear part and a second gear part arranged in sequence. By respectively cooperating with the first output gear, the intermediate gear and the second output gear, the toy can perform three different actions. Compared with the existing ones with more gear parts, the movement of multiple actions can be realized with fewer gears, making the production cost of the machine lower and the volume can be more miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings, as a part of the present application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0046] Figure 1 It is a schematic diagram of the external structure of the gearbox provided by the embodiment of the present invention;

[0047] Figure 2 It is a schematic diagram of the structure of the gearbox provided by the embodiment of the present invention after removing part of the housing;

[0048] Figure 3 It is a schematic diagram of the structure of the gearbox provided by the embodiment of the present invention after removing part of the housing and the lifting gear;

[0049] Figure 4 It is a schematic diagram of the structure of the gearbox provided by the embodiment of the present invention after removing part of the housing and one gear of the first output gear set;

[0050] Figure 5 It is a schematic diagram of the structure of the lifting gear of the gearbox provided by the embodiment of the present invention;

[0051] Figure 6 It is a schematic diagram of the structure of the second gear of the gearbox provided by the embodiment of the present invention in the first direction;

[0052] Figure 7 It is a schematic diagram of the structure of the second gear of the gearbox provided by the embodiment of the present invention in the second direction;

[0053] Figure 8 Structural schematic diagram of the first gear of the gearbox provided by the embodiment of the present utility model.

[0054] In the figure: housing 1, lifting tooth assembly 2, lifting gear 21, first gear part 211, second gear part 212, groove 213, boss 214, polygonal plug 215, step groove 216, first gear 22, protrusion 221, second gear 23, gear part 231, convex shell 232, polygonal slot 233, first output gear set 3, second output gear set 4, third gear 41, third large gear part 411, third small gear part 412, fourth gear 42, lifting drive gear set 5, intermediate gear 6, large gear part 61, small gear part 62, spring 7. Detailed implementation manners

[0055] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0056] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0057] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0058] See Figures 1 to 8As shown in the figure, an embodiment of the present application provides a gearbox, including: a housing 1, a lifting gear assembly 2, a first output gear set 3, a second output gear set 4, and a lifting drive gear set 5. The lifting gear assembly 2 includes a lifting gear 21 disposed on a shaft of the housing 1, and the lifting gear 21 only has a first gear portion 211 and a second gear portion 212 arranged in sequence. The first output gear set 3 is disposed on the housing 1, and the second output gear set 4 is disposed on the housing 1. The lifting drive gear set 5 is disposed on the housing 1, and the lifting drive gear set 5 is in transmission cooperation with the lifting gear 21 assembly and can drive the lifting gear 21 to move along the shaft to a first position, a second position, and a third position.

[0059] When the lifting gear 21 moves to the first position, the first gear portion 211 of the lifting gear 21 is in transmission cooperation with the first output gear set 3. When the lifting gear 21 moves to the second position, the lifting gear 21 is in transmission cooperation with the first output gear set 3 through an intermediate gear 6 disposed on the housing 1. When the lifting gear 21 moves to the third position, the second gear portion 212 of the lifting gear 21 is in transmission cooperation with the second output gear set 4.

[0060] The gearbox provided by the embodiment of the present application includes a lifting gear assembly 2 and a lifting drive gear set 5. The lifting gear assembly 2 and the lifting drive gear are in transmission connection. The rotation of the lifting drive gear set 5 can drive the lifting gear assembly 2 to switch to three different positions, thereby driving the first gear portion 211 and the second gear portion 212 in the lifting gear 21 to change the cooperation relationship with the first output gear set 3 and the second output gear set 4, and driving different transmission operations. Thus, the change of the toy action direction or the switching of different actions is realized.

[0061] Moreover, the lifting gear 21 of the lifting gear assembly 2 only has a first gear portion 211 and a second gear portion 212 arranged in sequence. The two gear portions can enable the toy to perform three different actions by respectively cooperating with the first output gear, the intermediate gear 6, and the second output gear. Compared with the existing ones with more gear portions, the movement of multiple actions can be realized with fewer gears, making the production cost of the machine lower and the volume can be made smaller.

[0062] In some possible implementation schemes, refer to Figures 3 to 4 and Figures 6 to 8As shown, the lifting gear assembly 2 includes a first gear 22 and a second gear 23. The first gear 22, the second gear 23 and the lifting gear 21 are arranged on the same axis. One of the first gear 22 and the second gear 23 is provided with a multi-step groove 216, and the other is provided with a protrusion 221. The lifting drive gear set 5 is respectively in transmission cooperation with the first gear 22 and the second gear 23 to drive the first gear 22 and the second gear 23 to move relative to each other, so that the protrusion 221 slides along the step groove 216. The first gear 22 pushes against the second gear 23, and the second gear 23 pushes the lifting gear 21 to move along the axis. The second gear 23 and the lifting gear 21 rotate synchronously. The first gear portion 211 is located on the side of the second gear portion 212 close to the first gear 22, and the outer diameter of the second gear portion 212 is greater than the outer diameter of the first gear portion 211.

[0063] The first gear 22 and the second gear 23 sleeved on the same axis; the first gear 22 and the second gear 23 are adjacent to each other and are in a relatively rotatable relationship. The lifting gear 21 is correspondingly lifted and rotated under the drive of the first gear 22 or the second gear 23. A protrusion 221 component is arranged on the surface of the first gear 22 opposite to the second gear 23, and a plurality of slots with various depths for accommodating the protrusion 221 component are arranged on the surface of the second gear 23 opposite to the first gear 22. As the first gear 22 and the second gear 23 move relative to each other, the protrusion 221 component enters or leaves the slots, changing the relative distance between the first gear 22 and the second gear 23, thereby changing the position of the lifting gear 21. Different output gear sets can be driven by the lifting gear 21.

[0064] The number of teeth of the first gear 22 and the second gear 23 is different. The output gears of the lifting drive gear set 5 are respectively meshed with the first gear 22 and the second gear 23 to drive the first gear 22 and the second gear 23 to move relative to each other. Due to the different transmission ratios, the rotation speeds of the first gear 22 and the second gear 23 are different. When the first gear 22 and the second gear 23 rotate relative to each other, the protrusion 221 component on the first gear 22 can smoothly enter and exit the slots on the second gear 23 and rotate in the slots, thereby changing the distance between the first gear 22 and the second gear 23, and further changing the height of the lifting gear 21 to match different output gear sets and perform different actions.

[0065] In some possible implementation schemes, see Figures 1 to 6As shown, the intermediate gear 6 and the output gear of the lifting drive gear set 5 are located on the same axis. The intermediate gear 6 includes a large gear portion 61 and a small gear portion 62, and the small gear portion 62 meshes with the input gear of the first output gear set 3. When the lifting gear 21 moves to the first position, the first gear portion 211 of the lifting gear 21 meshes with the input gear of the first output gear set 3, directly driving the first output gear set 3 to rotate, and the toy can be driven to perform the first action. When the lifting gear 21 moves to the second position, the second gear portion 212 of the lifting gear 21 meshes with the large gear portion 61, and the large gear portion 61 and the small gear rotate synchronously. Then the small gear portion 62 drives the first output gear set 3 to rotate. Thus, when the first output gear set 3 is compared with when performing the first action, the rotation direction is changed, and the rotation speed is also changed. Furthermore, the toy can be driven to perform the second action.

[0066] In some possible implementation schemes, refer to Figures 2 to 4 As shown, the gearbox further includes a spring 7. A groove 213 is provided on the side of the lifting gear 21 facing away from the first gear 22. The spring 7 is sleeved on the shaft passing through the lifting gear 21, and the two ends respectively abut against the housing 1 and the bottom wall of the groove 213.

[0067] The lifting gear 21 is sleeved on the sleeve of the first gear 22 or the second gear 23, and performs lifting movement and rotation under the drive of the first gear 22 or the second gear 23. After the lifting gear 21 is sleeved on the first gear 22 or the second gear 23, an elastic member is provided between the end of the shaft sleeved by the lifting gear 21. When the convex 221 member is located at the deepest groove position of the second gear 23 when the first gear 22 and the second gear 23 rotate relative to each other, the opposite surfaces of the first gear 22 and the second gear 23 are in contact. When the convex 221 member is located at other depth groove positions of the second gear 23 or leaves the groove position when the first gear 22 and the second gear 23 rotate relative to each other, the first gear 22 and the second gear 23 are separated by a corresponding distance. Among them, when the convex 221 member contacts a non-groove position of the second gear 23, the distance between the first gear 22 and the second gear 23 is the largest. Based on the force exerted by the lifting gear 21 on the first gear 22 or the second gear 23, the spring 7 can make the relative position of the first gear 22 and the second gear 23 more stable, preventing the phenomenon of position drift during their relative movement. Based on this, the position of the lifting gear 21 can be controlled more accurately.

[0068] Moreover, a groove 213 is provided on one side of the first gear 22. One side of the spring 7 extends into the groove 213 and abuts against the bottom wall of the groove 213. The groove 213 can limit the spring 7, ensuring the stable position of the spring 7 and providing a more stable elastic force.

[0069] In some possible implementation schemes, refer toFigures 5 to 8 As shown, the second gear 23 has a gear portion 231 and a convex shell 232 located on the side of the gear portion 231 facing away from the first gear 22. The stepped groove 216 is provided inside the convex shell 232. A convex platform 214 is provided on one side of the lifting gear 21. The convex platform 214 has a flat end face and an annular face. The flat end face is attached to the convex shell 232. The flat end face and the annular face are transitioned by an arc face. The convex platform 214 and the second gear 23 are in limit fit. By providing the stepped groove 216 inside the convex shell 232, the protrusion 221 on the first gear 22 can be better wrapped, ensuring accurate alignment between the protrusion 221 and the stepped groove 216. Moreover, the outer surface area can be increased. A convex platform 214 is provided on one side of the lifting gear 21. The flat face of the convex shell 232 cooperates with the flat end face of the convex platform 214, and the cooperation can also be stable in the rotating state, ensuring smooth lifting of the lifting gear 21 and accurate transmission.

[0070] In some possible implementation schemes, refer to Figures 5 to 6 As shown, a polygonal slot 233 is provided on the side of the second gear 23 where the convex shell 232 is provided. A polygonal plug 215 is provided on the convex platform 214 of the lifting gear 21. The polygonal plug 215 is inserted into the polygonal slot 233. The cooperation between the polygonal slot 233 and the polygonal plug 215 can ensure synchronous rotation of the second gear 23 and the lifting gear 21.

[0071] In some possible implementation schemes, refer to Figures 2 to 4 As shown, the second output gear set 4 includes a third gear 41 and a fourth gear 42. Both the third gear 41 and the fourth gear 42 are provided on the housing 1. The third gear 41 and the fourth gear 42 are meshed with each other. When the lifting gear 21 moves to the third position, the second gear portion 212 of the lifting gear 21 and the third gear 41 are meshed. The second output gear set 4 is provided with two gears, and the power is output again through transmission. The transmission ratio between the second output gear set 4 and the lifting gear 21 can be easily set through the cooperation of the two gears in a relatively small space. The volume can be made more miniaturized when the desired transmission ratio is achieved.

[0072] In some possible implementation schemes, refer to Figures 2 to 4As shown, the third gear 41 has a third large gear portion 411 and a third small gear portion 412. The third large gear portion 411 and the third small gear portion 412 are arranged in sequence along the rotation axis of the third gear 41, and the third small gear portion 412 meshes with the fourth gear 42. When the lifting gear 21 moves to the third position, the second gear portion 212 of the lifting gear 21 meshes with the third large gear portion 411 of the third gear 41. The thread can be extended through the third large gear portion 411 and the third small gear portion 412 to adjust the output speed of the second output gear set 4.

[0073] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details in detail, nor do they limit the application to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present application, so that those skilled in the art can understand and utilize the present application well. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A gearbox, characterized in that: include: case; A lifting gear assembly, the lifting gear assembly comprising a lifting gear disposed on a shaft on a housing, the lifting gear having only a first gear portion and a second gear portion disposed in sequence; a first output gear set, wherein the first output gear set is disposed on the housing; a second output gear set, wherein the second output gear set is disposed on the housing; A lifting drive gear set, wherein the lifting drive gear set is arranged on the housing, and the lifting drive gear set and the lifting gear assembly are in transmission cooperation, and can drive the lifting gear to move along the shaft to a first position, a second position and a third position; When the lifting gear moves to the first position, the first gear portion of the lifting gear and the first output gear group are in transmission cooperation. When the lifting gear moves to the second position, the lifting gear and the first output gear group are in transmission cooperation via the intermediate gear provided on the housing. When the lifting gear moves to the third position, the second gear portion of the lifting gear and the second output gear group are in transmission cooperation.

2. The gearbox according to claim 1, characterized in that: The lifting gear assembly includes a first gear and a second gear; The first gear, the second gear and the lifting gear are arranged on the same shaft, one of the first gear and the second gear is provided with a multi-step groove, and the other is provided with a protrusion; The lifting drive gear set is respectively matched with the first gear and the second gear to drive the first gear and the second gear to move relative to each other, so that the protrusion slides along the step groove, the first gear pushes the second gear, and the second gear pushes the lifting gear to move along the shaft, and the second gear and the lifting gear rotate synchronously; The first gear portion is located on a side of the second gear portion close to the first gear; An outer diameter of the second gear portion is greater than an outer diameter of the first gear portion.

3. The gearbox according to claim 2, characterized in that: The first gear and the second gear have different numbers of teeth; The output gear of the lifting drive gear set is respectively meshed with the first gear and the second gear to drive the first gear and the second gear to move relative to each other.

4. The gearbox according to claim 3, characterized in that: The intermediate gear and the output gear of the lifting drive gear set are located on the same shaft; The intermediate gear includes a large gear portion and a small gear portion; The pinion gear portion is meshed with the input gear of the first output gear set; When the lifting gear moves to the first position, the first gear portion of the lifting gear meshes with the input gear of the first output gear set, and when the lifting gear moves to the second position, the second gear portion of the lifting gear meshes with the large gear portion.

5. The gearbox according to claim 4, characterized in that: Including springs; A groove is provided on a side of the lifting gear away from the first gear; The spring is sleeved on a shaft penetrating the lifting gear, and two ends of the spring are respectively pressed against the shell and the bottom wall of the groove.

6. The gearbox according to claim 5, characterized in that: The second gear comprises a gear portion and a convex shell located at the gear portion away from the first gear, and the convex shell has the step groove inside; A boss is arranged on one side of the lifting gear, and the boss has a straight end surface and a circular surface; The straight end surface is fitted to the convex shell, and the straight end surface and the annular surface are transitioned by an arc surface; The boss and the second gear are in limited position cooperation.

7. The gearbox according to claim 6, characterized in that: A polygonal slot is provided on one side of the convex shell of the second gear; A polygonal plug is provided on the boss of the lifting gear; The polygonal plug is inserted into the polygonal slot.

8. The gearbox according to claim 1, characterized in that: The second output gear set includes a third gear and a fourth gear; The third gear and the fourth gear are both arranged on the housing, and the third gear and the fourth gear are meshed with each other; When the lifting gear moves to the third position, the second gear portion of the lifting gear is meshed with the third gear.

9. The gearbox according to claim 8, characterized in that: The third gear has a third large gear portion and a third small gear portion; The third large gear portion and the third small gear portion are sequentially arranged along the rotation axis of the third gear; The third pinion gear is meshed with the fourth gear; When the lifting gear moves to the third position, the second gear portion of the lifting gear and the third large gear portion of the third gear are meshed.

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