Dual-function gear set

Abstract

The utility model discloses a dual-function gear set which comprises a power piece, a first output assembly connected with the output end of the power piece and a second output assembly connected with the first output assembly. The first output assembly comprises a first transmission wheel connected with the power piece and a first output piece connected with the first transmission wheel through a first bearing. The first transmission wheel comprises a main body part connected with the output end of the power piece and a primary bevel gear connected with the main body part; the second output assembly comprises a second-stage bevel gear meshed with the first-stage bevel gear and a second output piece meshed with the second-stage bevel gear in the first state and separated from the second-stage bevel gear in the second state. According to the transmission module, the first output piece or the second output piece is controlled to rotate by driving the rotating direction of the first transmission wheel, so that the two output pieces can be controlled through one power piece, the size of the transmission module is reduced, and the production cost of a user is saved.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to the technical field of transmission assembly, especially relates to a dual function gear set. BACKGROUND

[0002] With the development of society, people's living standards are improving, intelligent household appliances are also developing, such as floor sweeping machines, washing machines and the like, which bring great convenience to people's life, and each drive module in the current intelligent household appliance industry needs a motor to control operation, so that the transmission module is large in size and high in overall power consumption, and multiple motors also increase the manufacturing cost of intelligent household appliances. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a dual function gear set to solve the technical problem in the background art.

[0004] The utility model provides a dual function gear set, the dual function gear set includes power part, first output assembly with the output end connection of power part and second output assembly with first output assembly connection, first transmission wheel with power part connection is included in first output assembly, first output piece is connected with first transmission wheel through first bearing, first transmission wheel includes the main part with the output end connection of power part and the first bevel gear connected with main part, second output assembly includes the second bevel gear with the meshing of first bevel gear and the second output piece with the meshing when first state and separation when second state of second bevel gear.

[0005] Further, the inner ring of the second bevel gear is provided with a first ratchet wheel, and the second output piece includes a second rotating shaft and a second ratchet wheel provided on the outer arm of the second rotating shaft and meshing with the first ratchet wheel in the first state.

[0006] Further, the main part is a connecting bevel gear fixedly connected with the first bevel gear.

[0007] Further, the power part includes a rotary motor and a worm connected with the rotary motor, and the worm is meshed with the connecting bevel gear.

[0008] Further, the first bearing is a one-way needle bearing, and the one-way needle bearing is connected with the connecting bevel gear in interference fit.

[0009] Further, the first output piece includes a first rotating shaft connected with the one-way needle bearing and provided with a first gear, and a butt joint piece meshed with the first gear of the first rotating shaft.

[0010] Furthermore, the second rotating shaft includes a second ratchet engaging portion and an output portion connected to the engaging portion; the output portion is used to connect to an external working piece; and the rotational resistance between the external working piece and the output portion is greater than the friction force of the secondary bevel gear.

[0011] Furthermore, the second rotating shaft also includes bearing mounting parts provided at both ends of the meshing part; the output part is connected to one of the bearing mounting parts, and the bearing mounting part is installed with a bearing.

[0012] Furthermore, the rotating motor is a micro motor.

[0013] Furthermore, the output end of the rotating motor is threadedly connected to the worm, or the output end of the rotating motor and the worm are integrally formed.

[0014] By adopting the above technical solution, the present invention has at least the following beneficial effects: when the present invention is in a first state, the power member drives the first transmission wheel to rotate in a first direction. At this time, the first output member connected to the first transmission wheel through the first bearing is stationary, while the secondary helical gear meshed with the primary helical gear of the transmission wheel rotates accordingly. At this time, the secondary helical gear meshes with the second output member, so that the second output member rotates with the rotation of the secondary helical gear, so that in the first state, the second output member is driven while the first output member remains stationary. When in the second state, the power member drives the second transmission wheel to rotate in a second direction. At this time, the first output member connected to the first transmission wheel through the first bearing rotates accordingly. At this time, since the secondary helical gear is separated from the second output member, although the secondary helical gear rotates with the primary helical gear, it is because the two are separated that the second output member remains stationary. The present invention controls the rotation of the first output member or the second output member by driving the rotation direction of the first transmission wheel, so that the two output members can be controlled by one power member, thereby reducing the volume of the transmission module and saving users' production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the dual-function gear set of the utility model.

[0016] Figure 2 This is a front view of the dual-function gear set of the utility model.

[0017] Figure 3 This is an exploded view of the dual-function gear set of the present invention.

[0018] Figure 4 This is a motion diagram of the worm of the dual-function gear set of the utility model rotating counterclockwise.

[0019] Figure 5This is a motion diagram of the worm of the dual-function gear set of the utility model rotating clockwise. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, and should not be understood as limiting the present invention. Moreover, the features of the embodiments of the present invention may be combined with each other unless there is a conflict.

[0021] like Figures 1-5 As shown, the utility model provides a dual-function gear set, which includes a power member 1, a first output assembly connected to the output end of the power member 1, and a second output assembly connected to the first output assembly; the first output assembly includes a first transmission wheel connected to the power member 1, and a first output member connected to the first transmission wheel through a first bearing 23; the first transmission wheel includes a main body connected to the output end of the power member 1 and a primary helical gear 22 connected to the main body; the second output assembly includes a secondary helical gear 31 meshed with the primary helical gear 22 and a second output member meshed with the secondary helical gear 31 in a first state and separated from the secondary helical gear 31 in a second state.

[0022] In this embodiment, in the first state, the power member 1 drives the first transmission wheel to rotate in the first direction. At this time, the first output member connected to the first transmission wheel through the first bearing 23 is stationary, and the secondary bevel gear 31 meshing with the primary bevel gear 22 of the transmission wheel rotates accordingly. At this time, the secondary bevel gear 31 is meshed with the second output member, so that the second output member rotates with the rotation of the secondary bevel gear 31, so that the second output member is driven while the first output member remains stationary in the first state. When in the second state, the power member 1 drives the second transmission wheel to rotate in the second direction. At this time, the first output member connected to the first transmission wheel through the first bearing 23 rotates accordingly. At this time, since the secondary bevel gear 31 is separated from the second output member, although the secondary bevel gear 31 rotates with the primary bevel gear 22, it is because the two are separated that the second output member remains stationary. The new type drives the rotation direction of the first transmission wheel to control the rotation of the first output member or the second output member, so that the two output members can be controlled by one power member 1, thereby reducing the volume of the transmission module and saving users' production costs; in this embodiment, the first output member can be used to connect the first connecting member, and the second output member can be used to connect the second output member. During specific operation, the first output member remains stationary in the first state, while the first output member rotates with the first transmission wheel in the second state, which is determined by the properties of the first bearing 23. In the first state, the second output member is engaged with the secondary bevel gear 31, and in the second state, the second output member is separated from the secondary bevel gear 31 because the different directions of rotation of the helical angle of the bevel gear generate axial forces in different directions, thereby causing the secondary bevel gear 31 to move toward or away from the second output member, thereby achieving engagement and separation with the second output member.

[0023] In a specific embodiment, the inner ring of the secondary bevel gear 31 is provided with a first ratchet 311; the second output member includes a second rotating shaft 321 and a second ratchet 322 arranged on the outer arm of the second rotating shaft 321 and meshing with the first ratchet 311 when in the first state. In this embodiment, when in the first state, the first ratchet 311 of the secondary bevel gear 31 is meshed with the second ratchet 322 of the second output member, so that when the secondary bevel gear 31 rotates, it can drive the second rotating shaft 321 to rotate, so that the second output member is driven, and when in the first state, the first ratchet 311 of the secondary bevel gear 31 is separated from the second ratchet 322 of the second output member, so that when the secondary bevel gear 31 rotates, the second rotating shaft 321 is relatively stationary, so that the second output member is not driven.

[0024] In one specific embodiment, the main body is a connecting bevel gear 21 fixedly connected with the primary bevel gear 22; the power element 1 comprises a rotary motor and a worm 11 connected with the rotary motor; the worm 11 meshes with the connecting bevel gear 21, and the clockwise or counterclockwise movement of the worm 11 driven by the rotary motor drives the connecting bevel gear 21 to drive the primary bevel gear 22 to rotate in the corresponding direction, thereby driving the secondary bevel gear 31 to rotate and realizing the meshing or separation of the primary ratchet and the secondary ratchet, and finally achieving the driving of one of the first output element and the second output element.

[0025] Specifically, based on the right-handed helix of the worm 11, and taking the installation mode in the drawings of the present application as an example, when the worm 11 rotates counterclockwise (see Figure 4 ), the connecting gear, the primary bevel gear 22 and the first bearing 23 rotate clockwise at this time, and in this case, the first bearing 23 is in a slipping state with the first output element, and at this time, the first output element does not rotate, and because the secondary bevel gear 31 meshes with the primary bevel gear 22, the secondary bevel gear 31 rotates counterclockwise, and at this time, due to the right-handed helix angle of the secondary bevel gear 31, the secondary bevel gear 31 generates an axial force to the left while rotating, thereby making the secondary bevel gear 31 move to the left and making the primary ratchet thereof mesh with the secondary ratchet of the second output element, thereby realizing the rotation of the second output element. Figure 5 ), the connecting gear, the primary bevel gear 22 and the first bearing 23 rotate counterclockwise at this time, and in this case, the first bearing 23 is in a fastening state with the first output element, and at this time, the first output element rotates, and because the secondary bevel gear 31 meshes with the primary bevel gear 22, the secondary bevel gear 31 rotates clockwise, and at this time, due to the right-handed helix angle of the secondary bevel gear 31, the secondary bevel gear 31 generates an axial force to the right while rotating, thereby making the secondary bevel gear 31 move to the right and making the primary ratchet thereof separate from the secondary ratchet of the second output element, thereby realizing the inaction of the second output element.

[0026] When the helix direction of the worm 11 is left-handed, the rotation directions of the primary bevel gear 22 and the secondary bevel gear 31 will be opposite to those described in the foregoing paragraph, and at this time, the installation direction of the one-way needle bearing 23 and the orientation of the first ratchet 311 of the secondary bevel gear 31 and the second ratchet 322 on the second output element can be changed as needed to realize the functional design of the product.

[0027] In one specific embodiment, the first bearing 23 is a one-way needle bearing 33; the one-way needle bearing 33 is connected with the connecting bevel gear 21 in an interference fit.

[0028] In one specific embodiment, the first output member comprises a first rotating shaft 241 connected with the one-way needle bearing 33 and provided with a first gear 242, and a counter member 243 engaged with the first gear 242 of the first rotating shaft 241. In this embodiment, the first gear 242 is arranged on the first rotating shaft 241, so that the counter member 243 can be engaged with the first gear 242, thereby enabling the first rotating shaft 241 to drive the counter member 243 to rotate. The first counter member 243 is used to mount components driven by the first rotating shaft 241.

[0029] In one specific embodiment, the second rotating shaft 321 comprises a second ratchet 322 engagement portion 3211 and an output portion 3212 connected with the engagement portion 3211. The output portion 3212 is used to connect external working members. The rotating resistance of the external working members and the output portion 3212 is greater than the friction of the second bevel gear 31.

[0030] In one specific embodiment, the second rotating shaft 321 further comprises bearing 33 mounting portions arranged at both ends of the engagement portion 3211. The output portion 3212 is connected with one of the bearing 33 mounting portions. The bearing 33 is mounted on the bearing 33 mounting portion, so that working members can be mounted on both ends of the second rotating shaft 321.

[0031] In one specific embodiment, the rotating motor is a micro motor, which can be applied to small electrical appliances.

[0032] In one specific embodiment, the output end of the rotating motor is threadedly connected with the worm 11, or the output end of the rotating motor is integrally formed with the worm 11.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and transformations can be made to these examples without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalent ranges.

Claims

1. A dual-function gear set, characterized in that: The dual-function gear set includes a power member, a first output assembly connected to the output end of the power member, and a second output assembly connected to the first output assembly; the first output assembly includes a first transmission wheel connected to the power member, and a first output member connected to the first transmission wheel through a first bearing; the first transmission wheel includes a main body connected to the output end of the power member and a primary helical gear connected to the main body; the second output assembly includes a secondary helical gear meshed with the primary helical gear and a second output member meshed with the secondary helical gear in a first state and separated from the secondary helical gear in a second state.

2. The dual-function gear set according to claim 1, wherein: The inner ring of the secondary helical gear is provided with a first ratchet; the second output member includes a second rotating shaft and a second ratchet provided on an outer arm of the second rotating shaft and meshing with the first ratchet in the first state.

3. The dual-function gear set according to claim 1, wherein: The main body is a connecting helical gear fixedly connected to the first-stage helical gear.

4. The dual-function gear set according to claim 3, characterized in that: The power component includes a rotating motor and a worm connected to the rotating motor; the worm is meshed with the connecting helical gear.

5. The dual-function gear set according to claim 4, characterized in that: The first bearing is a one-way needle roller bearing; the one-way needle roller bearing is connected to the connecting helical gear through interference fit.

6. The dual-function gear set according to claim 5, characterized in that: The first output member includes a first rotating shaft connected to the one-way needle bearing and provided with a first gear, and a docking member meshed with the first gear of the first rotating shaft.

7. The dual-function gear set according to claim 2, characterized in that: The second rotating shaft includes a second ratchet engaging portion and an output portion connected to the engaging portion; the output portion is used to connect to an external working piece; and the rotational resistance between the external working piece and the output portion is greater than the friction force of the secondary helical gear.

8. The dual-function gear set according to claim 7, characterized in that: The second rotating shaft further includes bearing mounting portions provided at both ends of the meshing portion; the output portion is connected to one of the bearing mounting portions, and the bearing mounting portion is equipped with a bearing.

9. The dual-function gear set according to claim 4, characterized in that: The rotating motor is a micro motor.

10. The dual-function gear set according to claim 4, wherein: The output end of the rotating motor is threadedly connected to the worm, or the output end of the rotating motor and the worm are integrally formed.

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