Driving device and electronic product

Abstract

The embodiment of the application discloses a driving device and electronic product, the driving device includes base, driving part and transmission mechanism, the base is provided with positioning hole; the end of the driving part is provided with annular convex edge embedded in the positioning hole; the transmission mechanism includes input gear, output gear and transmission gear assembly, the input gear is connected with the driving shaft of the driving part, the transmission gear assembly is rotationally arranged on the base and is in meshing connection with the input gear and the output gear, and the output gear is used for power output. The base can ensure the center distance between the transmission gear assembly and the input gear, the gears of the input gear and the transmission gear assembly can be accurately in meshing connection, therefore, the input gear can stably drive the transmission gear assembly to rotate when rotating, so that it is ensured that the driving device can stably output power outward.

Description

Technical Field

[0001] This application relates to the technical field of mechanical transmission, and more particularly to a drive device and electronic product. Background Technology

[0002] In existing transmission technologies, the drive unit includes a drive element, an input gear, an output gear, and a transmission gear assembly disposed between the input gear and the output gear. The transmission gear assembly has one gear meshing with the input gear and another gear meshing with the output gear. During power transmission, the drive element drives the input gear to rotate, power is input from the input gear and transmitted to the output gear through the transmission gear assembly, and the output gear outputs the power.

[0003] In some cases, the positions of the driving components and the transmission gear assembly are not properly positioned, which affects the center distance between the transmission gear assembly and the input gear. As a result, the transmission gear assembly has poor stability during transmission, which affects the transmission gear assembly's ability to stably transmit power from the input gear to the output gear, and thus affects the power output of the drive device. Furthermore, the long-term unstable operation of the transmission gear assembly also seriously affects the service life of the drive device. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a driving device and an electronic product, wherein the driving device can stably complete the output of power.

[0005] In a first aspect, the present invention provides a driving device, comprising:

[0006] The base has positioning holes;

[0007] A driving component, wherein the end of the driving component from which the driving shaft extends is provided with an annular protrusion, the annular protrusion being coaxial with the driving shaft of the driving component, and the annular protrusion being fitted into the positioning hole;

[0008] The transmission mechanism includes an input gear, an output gear, and a transmission gear assembly. The input gear is connected to the drive shaft of the drive component. The transmission gear assembly is rotatably mounted on the base and meshes with the input gear and the output gear. The output gear is used for power output.

[0009] According to some embodiments of the present invention, at least two transmission gear assemblies are provided and are independently arranged, and each of the transmission gear assemblies is rotatably connected to the base.

[0010] According to some embodiments of the present invention, each of the transmission gear assemblies includes one or more gear structures, each gear structure including a transmission gear shaft, a first gear, and a second gear, wherein:

[0011] The transmission gear shaft is connected to the base;

[0012] Both the first gear and the second gear are connected to the transmission gear shaft. The second gear of the preceding gear structure meshes with the first gear of the following gear structure, so that multiple gear structures are meshed and connected in sequence. The first gear of the first gear structure meshes with the input gear, and the second gear of the tail gear structure meshes with the output gear. The transmission gear shaft of some of the gear structures can be the same transmission gear shaft.

[0013] Wherein, the transmission gear shaft is fixedly connected to the base, the first gear and the second gear are integrally formed and rotatably connected to the transmission gear shaft; or, the transmission gear shaft is rotatably connected to the base.

[0014] According to some embodiments of the present invention, the transmission gear assembly includes a first gear assembly and a second gear assembly, wherein:

[0015] The first gear assembly includes a first gear shaft, a first drive gear, a second drive gear, a third drive gear, and a fourth drive gear. The first gear shaft is rotatably connected to the base. The first drive gear, the second drive gear, the third drive gear, and the fourth drive gear are all connected to the first gear shaft. The first drive gear meshes with the input gear, and the second drive gear meshes with the output gear.

[0016] The second gear assembly includes a second gear shaft, a first driven gear, and a second driven gear. The second gear shaft is rotatably connected to the base. The first driven gear is connected to the second gear shaft and meshes with the third driving gear. The second driven gear is connected to the second gear shaft and meshes with the fourth driving gear.

[0017] According to some embodiments of the present invention, the transmission mechanism further includes a bracket, the bracket comprising: a connector, one end of which is connected to the base; a top seat, the other end of which is connected to the top seat; at least two support sleeves, each of which is sleeved on the connector, wherein one end of at least one support sleeve abuts against the base, and one end of the other support sleeve abuts against the top seat; and a partition, which is sleeved on the outside of the connector and abuts against adjacent support sleeves, wherein the gear shaft of the transmission mechanism is connected to the partition.

[0018] According to some embodiments of the present invention, the transmission mechanism further includes: a bracket, the bracket including a connector and a top seat, one end of the connector being interference-fitted with the base, and the other end of the connector being connected to the top seat; an output shaft, the output shaft being connected to the top seat, and the output gear being connected to the output shaft.

[0019] According to some embodiments of the present invention, the bracket further includes: a first output bearing, wherein the output shaft is rotatably connected to the top seat via the first output bearing; a fixed sleeve connected to the output shaft; and a first support pad, wherein the first support pad is sleeved on the output shaft and abuts against the inner ring of the fixed sleeve and the first output bearing.

[0020] According to some embodiments of the present invention, the bracket further includes a second output bearing, an inner ring sleeve, an outer ring sleeve, and an elastic pad, wherein the output shaft is rotatably connected to the top seat via the second output bearing, the inner ring sleeve abuts against the inner ring body of the first output bearing and the inner ring body of the second output bearing, the outer ring sleeve abuts against the outer ring body of the first output bearing and the outer ring body of the second output bearing, and the elastic pad is held between the inner ring sleeve and the inner ring body of the first output bearing and / or the second output bearing.

[0021] According to some embodiments of the present invention, the driving device further includes a support and a Hall sensor, the support being interference-fitted with the tail of the driving member, and the Hall sensor being disposed on the support for detecting the operating condition of the driving member.

[0022] Secondly, embodiments of this application provide an electronic product including the aforementioned driving device.

[0023] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: the base has a positioning hole, and the annular protrusion at the end of the driving component is embedded in the positioning hole, thus the base positions the drive shaft of the driving component. Furthermore, since the input gear is connected to the drive shaft of the driving component, the base can position the rotation center axis of the input gear through the driving component. Simultaneously, the transmission gear assembly is rotatably connected to the base, thereby the base can position the rotation center axis of the transmission gear assembly. In summary, by adopting the above-described structure, the base can simultaneously position both the input gear and the transmission gear assembly, ensuring the center distance between the transmission gear assembly and the input gear. This allows the input gear and the transmission gear assembly to mesh precisely, ensuring that the input gear can stably drive the transmission gear assembly to rotate, thus guaranteeing that the driving device can stably output power. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is an exploded structural diagram of the driving device according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the assembly of the transmission mechanism and the base according to an embodiment of the present invention;

[0027] Figure 3 This is an exploded structural diagram of the transmission mechanism and the base according to an embodiment of the present invention;

[0028] Figure 4 This is an exploded structural diagram of the transmission mechanism according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of another structure of the transmission mechanism according to an embodiment of the present invention;

[0030] Figure 6 This is an exploded structural diagram of the top seat and its internal components according to an embodiment of the present invention;

[0031] Figure 7 This is an axial sectional view of the top seat and its internal components according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the overall structure of the driving device according to an embodiment of the present invention.

[0033] Figure label:

[0034] 10. Drive unit; 100. Base; 110. Positioning hole; 200. Drive component; 210. Annular flange; 220. Drive shaft; 300. Transmission mechanism; 310. Transmission gear assembly; 311. First gear assembly; 3111. First driving gear; 3112. Second driving gear; 3113. Third driving gear; 3114. Fourth driving gear; 3115. First gear shaft; 312. Second gear assembly; 3121. First driven gear; 3122. Second driven gear; 3123. Second gear shaft; 313. Gear structure; 3131. First gear; 3132. Second gear; 3133, transmission gear shaft; 320, bracket; 321, connector; 322, partition; 3221, marking notch; 3222, marking hole; 323, support sleeve; 324, top seat; 3241, first output bearing; 3242, second output bearing; 3243, inner ring sleeve; 3244, outer ring sleeve; 325, fixing sleeve; 326, first support pad; 327, second support pad; 328, elastic pad; 330, input gear; 340, output gear; 350, output shaft; 400, housing; 410, tail end cover; 500, Hall sensor; 510, support. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0039] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] This application discloses a driving device 10, with reference to... Figure 1 It includes a base 100, a drive component 200, and a transmission mechanism 300, wherein:

[0041] The base 100 has a positioning hole 110;

[0042] The drive component 200 has an annular flange 210 at the end where the drive shaft 220 extends. The annular flange 210 is coaxial with the drive shaft 220 of the drive component 200 and is embedded in the positioning hole 110.

[0043] The transmission mechanism 300 includes an input gear 330, an output gear 340, and a transmission gear assembly 310. The input gear 330 is connected to the drive shaft 220 of the drive member 200. The transmission gear assembly 310 is rotatably mounted on the base 100 and meshes with the input gear 330 and the output gear 340. The output gear 340 is used for power output.

[0044] Specifically, during the operation phase, the drive unit 10 drives the input gear 330 to rotate in both directions. The input gear 330 drives the transmission gear assembly 310 to rotate synchronously, and the output gear 340 completes the power input. The transmission gear assembly 310 drives the output gear 340 to rotate, transmitting power from the input gear 330 to the output gear 340. During rotation, the output gear 340 outputs power to complete the movement of the external actuator.

[0045] Understandably, the base 100, through the positioning hole 110, allows the annular protrusion 210 at the end of the drive member 200 to be fitted into the positioning hole 110, thus enabling the base 100 to position the drive shaft 220 of the drive member 200. Furthermore, since the input gear 330 is connected to the drive shaft 220 of the drive member 200, the base 100 can position the rotation center axis of the input gear 330 via the drive member 200. Simultaneously, the transmission gear assembly 310 is rotatably connected to the base 100, thereby enabling the base 100 to position the rotation center axis of the transmission gear assembly 310. In summary, the drive device 10 adopts the above-described structure, and the base 100 can simultaneously position the input gear 330 and the transmission gear assembly 310, thereby ensuring the center distance between the transmission gear assembly 310 and the input gear 330. This allows the gears of the input gear 330 and the transmission gear assembly 310 to mesh precisely. Therefore, when the input gear 330 rotates, it can stably drive the transmission gear assembly 310 to rotate, thus ensuring that the drive device 10 can stably output power. Furthermore, compared with the drive device 10 of the prior art, the drive device 10 of this application can work more stably, and the service life of the drive device 10 is improved.

[0046] In some embodiments, refer to Figures 2 to 4At least two transmission gear assemblies 310 are provided, each independently configured and connected to the input gear 330 and the output gear 340. Multiple transmission gear assemblies 310 cooperate to transmit the power input from the input gear 330 to the output gear 340, and the gear shaft of each transmission gear assembly 310 is rotatably connected to the base 100. Each transmission gear assembly 310 may have one gear shaft or multiple gear shafts, depending on the transmission configuration of the transmission gear assembly 310.

[0047] During operation, the drive unit 10 drives the input gear 330 to rotate in both directions. Since both transmission gear assemblies 310 are connected to the input gear 330, the input gear 330 simultaneously drives both independent transmission gear assemblies 310 to rotate. Furthermore, each transmission gear assembly 310 is connected to the output gear 340; therefore, both transmission gear assemblies 310 simultaneously drive the output gear 340 to rotate, and the output gear 340 outputs power during rotation.

[0048] Compared to the prior art which uses a single transmission gear assembly 310 to transmit power, this application uses two or more transmission gear assemblies 310 to transmit power from the input gear 330 to the output gear 340. The starting gears of each transmission gear assembly 310 are in close contact with the input gear 330, and the ending gears of each transmission gear assembly 310 are in close contact with the output gear 340. Thus, the various transmission gear assemblies 310 work together to transmit the power input from the input gear 330 to the output gear 340 step by step. More specifically, when the input gear 330 rotates in a certain direction (positive or negative), each transmission gear assembly 310 meshing with it will rotate in the opposite direction to the rotation of the input gear 330, achieving preload engagement. Therefore, by using a combination of multiple transmission gear assemblies 310, the backlash difference generated by the transmission gear assemblies 310 during transmission can be reduced, thereby reducing the backlash difference generated by the transmission mechanism 300 during transmission.

[0049] Moreover, the transmission mechanism 300 uses a multi-path transmission gear assembly 310 to complete the power transmission from the input gear 330 to the output gear 340. When the transmission mechanism 300 is working, it has advantages such as uniform output torque, low noise, and pure sound. In addition, the overall structure is relatively stable, which can improve operating efficiency.

[0050] In addition, the gear shafts of each transmission gear assembly 310 are rotatably connected to the base 100. Thus, the base 100 can ensure the distance between the gear shafts of each transmission gear assembly 310 and the central axis of the input gear 330, thereby ensuring the precise matching of the multiple transmission gear assemblies 310 and further reducing the tooth backlash difference generated by the transmission gear assemblies 310 during transmission.

[0051] In some embodiments, refer to Figure 5 Each transmission gear assembly 310 includes multiple gear structures 313. Each gear structure 313 includes a transmission gear shaft 3133, a first gear 3131, and a second gear 3132. The transmission gear shaft 3133 is connected to the base 100. Both the first gear 3131 and the second gear 3132 are connected to the transmission gear shaft 3133. The second gear 3132 of the preceding gear structure 313 meshes with the first gear 3131 of the following gear structure 313, so that the multiple gear structures 313 are sequentially meshed and connected. The first gear 3131 of the first gear structure 313 meshes with the input gear 330, and the second gear 3132 of the last gear structure 313 meshes with the output gear 340. At least some of the gear structures 313 may share the same transmission gear shaft 3133; however, the individual gear structures 313 may also share different transmission gear shafts 3133.

[0052] For example, refer to Figure 5 The gear structure 313 comprises three gears: a first gear structure 313a, a second gear structure 313b, and a third gear structure 313c. The first gear structure 313a is the leading gear structure 313, and the third gear structure 313c is the trailing gear structure 313. The second gear structure 313b connects the first gear structure 313a and the second gear structure 313b. Specifically, the first gear 3131 of the first gear structure 313a meshes with the input gear 330, the second gear 3132 of the first gear structure 313a meshes with the first gear 3131 of the second gear structure 313b, the second gear 3132 of the second gear structure 313b meshes with the first gear 3131 of the third gear structure 313c, and the second gear 3132 of the third gear structure 313c meshes with the output gear 340. In this application, the transmission gear shaft 3133 of the first gear structure 313a and the transmission gear shaft 3133 of the second gear structure 313b can be the same gear shaft or different gear shafts. The transmission gear shaft 3133 can be fixedly connected to the base 100 or rotatably connected. If the transmission gear shaft 3133 is fixedly connected to the base 100, the first gear 3131 and the second gear 3132 are integrally formed and rotatably connected to the transmission gear shaft 3133, thus the first gear 3131 can directly drive the second gear 3132 to rotate; or, if the transmission gear shaft 3133 is rotatably connected to the base 100, the first gear 3131 and the second gear 3132 can be respectively fixedly set on the transmission gear shaft 3133, thus the first gear 3131 drives the transmission gear shaft 3133 to rotate, and the transmission gear shaft 3133 drives the second gear 3132 to rotate.

[0053] In specific implementation, the driving component 200 drives the input gear 330 to rotate, which in turn drives the first gear 3131 of the first gear structure 313a to rotate. The first gear 3131 of the first gear structure 313a rotates synchronously with the second gear 3132. The second gear 3132 of the first gear structure 313a drives the first gear 3131 of the second gear structure 313b to rotate, and the first gear 3131 of the second gear structure 313b rotates synchronously with the second gear 3132. The second gear 3132 of the second gear structure 313b drives the first gear 3131 of the third gear structure 313c to rotate, and the first gear 3131 of the third gear structure 313c rotates synchronously with the second gear 3132. The second gear 3132 of the third gear structure 313c then drives the output gear 340 to rotate.

[0054] Of course, each transmission gear assembly 310 may also include a gear structure 313, wherein the first gear 3131 of the gear structure 313 meshes with the input gear 330, and the second gear 3132 of the gear structure 313 meshes with the output gear 340. This application will not provide specific details.

[0055] Furthermore, the tooth diameter of the first gear 3131 in the leading gear structure 313 is larger than that of the input gear 330, and the tooth diameter of the second gear 3132 in the trailing gear structure 313 is smaller than that of the output gear 340. Additionally, the tooth diameter of the first gear 3131 in each gear structure 313 is larger than that of the second gear 3132. It can be understood that, along the direction of force transmission, a pair of meshing gears constitutes a transmission stage, and the force is reduced in speed when transmitted to each transmission stage.

[0056] In some embodiments, refer to Figure 4 Each transmission gear assembly 310 includes a first gear assembly 311, which includes a first gear shaft 3115, a first drive gear 3111, and a second drive gear 3112. The rear end of the first gear shaft 3115 is rotatably connected to the base 100. The first drive gear 3111 is fixedly connected to the first gear shaft 3115 and meshes with the input gear 330. The second drive gear 3112 is fixedly connected to the first gear shaft 3115 and meshes with the output gear 340. Thus, the input gear 330 is connected to the output gear 340 via the first gear shaft 3115, the first drive gear 3111, and the second drive gear 3112. The first drive gear 3111 and the second drive gear 3112 have different tooth diameters, allowing the first gear assembly 311 to increase or decrease the rotational speed of the drive component 200.

[0057] In further detail, when the transmission mechanism 300 is in operation, the input gear 330 simultaneously drives the first drive gear 3111 of each first gear assembly 311 to rotate. The first drive gear 3111, the first gear shaft 3115, and the second drive gear 3112 rotate synchronously. The second drive gear 3112 of each first gear assembly 311 simultaneously drives the output gear 340 to rotate. The first gear assemblies 311 are configured to cooperate to reduce the backlash difference generated during transmission.

[0058] Furthermore, with the first gear assembly 311 adopting the above-described structural form, the first gear assembly 311 generates only two transmission stages during power transmission. Therefore, the tooth backlash difference generated by the first gear assembly 311 is small, thereby further reducing the tooth backlash difference generated during power transmission.

[0059] Furthermore, the base 100 positions the drive component 200 via the positioning hole 110, thereby positioning the input gear 330. Since the first gear shaft 3115 is rotatably connected to the base 100, the base 100 positions the first drive gear 3111 via the first gear shaft 3115. In summary, by simultaneously positioning the central axis of the input gear 330 and the central axis of the first drive gear 3111 via the base 100, the input gear 330 and the first drive gear 3111 can mesh more precisely, ensuring that the input gear 330 can stably drive the first drive gear 3111 to rotate when rotating, thus stably transmitting power from the input gear 330 to the first gear assembly 311.

[0060] Furthermore, the transmission gear assembly 310 also includes a second gear assembly 312, which includes a second gear shaft 3123, a first driven gear 3121, and a second driven gear 3122. The rear end of the second gear shaft 3123 is rotatably connected to the base 100, and both the first driven gear 3121 and the second driven gear 3122 are connected to the second gear shaft 3123. Simultaneously, the first gear assembly 311 also includes a third driving gear 3113 and a fourth driving gear 3114, both of which are connected to the first gear shaft 3115. The first driven gear 3121 meshes with the third driving gear 3113, and the second driven gear 3122 meshes with the fourth driving gear 3114.

[0061] The tooth diameter of the third driving gear 3113 is different from that of the fourth driving gear 3114. Correspondingly, the tooth diameters of the first driven gear 3121 and the second driven gear 3122 are different. With this configuration, the second gear assembly 312 can better position the first gear assembly 311, thereby further reducing the tooth backlash difference generated during power transmission.

[0062] It is understandable that, through the arrangement of the second gear assembly 312, the first driven gear 3121 and the second driven gear 3122 mesh with the third driving gear 3113 and the fourth driving gear 3114 of the first gear assembly 311, respectively. Thus, the second gear assembly 312 has the function of positioning the first gear assembly 311, thereby reducing the tooth backlash difference generated by the first gear assembly 311 during transmission. Furthermore, the first gear assembly 311 and the second gear assembly 312 have a simple and compact structure, and the size of the transmission mechanism 300 is small enough, thus facilitating the application of the transmission mechanism 300.

[0063] Furthermore, the first gear shaft 3115 is rotatably connected to the base 100, and the second gear shaft 3123 is connected to the base 100, so that the base 100 can position the first gear shaft 3115 and the second gear shaft 3123. Thus, the base 100 can ensure the center distance between the first gear assembly 311 and the second gear assembly 312, thereby ensuring precise meshing between the first driven gear 3121 and the third driving gear 3113, and precise meshing between the second driven gear 3122 and the fourth driving gear 3114. This allows the first gear assembly 311 and the second gear assembly 312 to better maintain stability during transmission and to better reduce the tooth backlash difference generated during transmission.

[0064] The second gear shaft 3123 is provided with two driven gears, namely a first driven gear 3121 and a second driven gear 3122, which mesh with the third driving gear 3113 and the fourth driving gear 3114 of the first gear shaft 3115, respectively. Instead of having two driven gears, the second gear shaft 3123 can also be provided with one or more driven gears, and the number of driven gears can be set as needed.

[0065] In some embodiments, refer to Figure 2 and Figure 4The transmission mechanism 300 also includes a bracket 320, which includes a connector 321 and a top seat 324. The connector 321 can be a bolt or other component. The tail end of the connector 321 passes through the base 100, and the nut at the tail end of the connector 321 abuts against the rear side of the base 100. The head end of the connector 321 is connected to the top seat 324, and the base 100 and the top seat 324 are spaced apart. The transmission mechanism 300 also includes an output shaft 350. The top seat 324 has mounting holes extending to both ends. The output shaft 350 passes through the mounting holes of the top seat 324 and is rotatably connected to the top seat 324. The central axis of the output shaft 350 is coaxially arranged with the central axis of the input gear 330. The output gear 340 is located on the rear side of the top seat 324 and is fixedly connected to the output shaft 350. Specifically, when the transmission gear assembly 310 drives the output gear 340 to rotate, the output gear 340 drives the output shaft 350 to rotate, and the output shaft 350 drives the external actuator to move, so as to complete the power output.

[0066] It is understood that the connector 321 is connected to the base 100, and the top seat 324 is connected to the connector 321. Thus, the base 100 positions the top seat 324 via the connector 321. Simultaneously, the base 100 positions the gears of the transmission gear assembly 310, specifically the second driving gear 3112. In summary, the drive device 10, through the placement of the base 100, ensures that the distance between the central axis of the transmission gear assembly 310 and the central axis of the output gear 340 is maintained, the gears of the transmission gear assembly 310 are precisely connected to the output gear 340, and the transmission gear assembly 310 can stably transmit power to the output gear 340 when driving it to rotate.

[0067] In addition, the transmission mechanism 300 adopts the above structure. The transmission mechanism 300 and the base 100 are designed separately, which facilitates the connection between the base 100 and the transmission mechanism 300 and the installation of the components of the transmission mechanism 300.

[0068] In some embodiments, the base 100 is made of a metal material, such as stainless steel. Metal materials have high strength, and when other components are assembled on the base 100, such as the drive component 200, the connector 321 and the transmission gear assembly 310, the base 100 is not easily deformed. This ensures the accuracy of the distance between the rotation center axis of the transmission gear assembly 310, the rotation center axis of the input gear 330 and the rotation center axis of the output gear 340, thereby ensuring that the gears of the transmission mechanism 300 can be precisely meshed and connected, and that the transmission mechanism 300 can stably complete the transmission and output of power.

[0069] In some embodiments, the bracket 320 further includes a support sleeve 323 and a partition 322. At least two support sleeves 323 are sleeved on the outer side of each connector 321. The rear end of one support sleeve 323 abuts against the front side of the base 100, and the front end of the other support sleeve 323 abuts against the rear side of the top seat 324. The partition 322 is sleeved on the outer side of the connector 321 and abuts against the two adjacent support sleeves 323, thereby keeping the partition 322 in a front-rear position. The gear shaft of the transmission gear assembly 310 is connected to the partition 322, and the connector 321 passes through the partition 322. Thus, the partition 322 further ensures the stability of the transmission gear assembly 310 during rotation and further positions the connector 321, thereby ensuring the position of the top seat 324 and the position of the output shaft 350. The gear of the transmission gear assembly 310 meshes precisely with the output gear 340 on the output shaft 350.

[0070] In the specific arrangement of the partition 322, this application provides two partitions 322, but it is not limited to two partitions 322. One partition 322 or more partitions 322 can also be provided. In particular, along the output direction of the power, a transmission stage is formed between two adjacent gears. The more transmission stages the transmission mechanism 300 has, the more partitions 322 are provided accordingly, so as to distribute each transmission stage in different areas in the front and rear directions.

[0071] Understandably, the bracket 320 adopts the aforementioned structure, resulting in a relatively simple overall structure and lower assembly difficulty for the transmission mechanism 300. Furthermore, the bracket 320 enables precise assembly between the input gear 330, the first gear assembly 311, the second gear assembly 312, and the output gear 340, ensuring stable power transmission and output from the transmission mechanism 300. Secondly, during assembly, different lengths of support sleeves 323 can be selected to adjust the height of the partition 322, thereby accommodating the assembly of the first gear assembly 311 and the second gear assembly 312.

[0072] Furthermore, the edge of the partition 322 is provided with a marking notch 3221, and the partition 322 is also provided with a marking hole 3222. The design of the marking notch 3221 and the marking hole 3222 is mainly to facilitate the installation of gears during tooling and to accurately locate the positions of the gears of the first gear assembly 311 and the gears of the second gear assembly 312.

[0073] In some embodiments, refer to Figures 4 to 7The bracket 320 also includes a first output bearing 3241 and a second output bearing 3242, both of which are mounted in the mounting holes of the top seat 324. The second output bearing 3242 is located between the output gear 340 and the first output bearing 3241, with its inner ring abutting against the end of the output gear 340. The output shaft 350 passes through the inner rings of the first output bearing 3241 and the second output bearing 3242, and is interference-fitted. As can be seen from the above, the output shaft 350 of this application is rotatably connected to the bracket 320 through two output shaft bearings 350, thereby ensuring a stable rotatable connection between the output shaft 350 and the bracket 320, and preventing excessive output force of the output shaft 350, which could cause loosening of the inner rings of the output shaft 350 and the output shaft bearings 350.

[0074] To further prevent loosening of the inner ring of the first output bearing 3241 and the inner ring of the second output bearing 3242, in some embodiments, the bracket 320 further includes an inner ring sleeve 3243 and an outer ring sleeve 3244. The inner ring sleeve 3243 is sleeved on the outside of the output shaft 350 and abuts against the inner ring of the first output bearing 3241 and the inner ring of the second output bearing 3242. The outer ring sleeve 3244 is located outside the inner ring sleeve 3243 and abuts against the outer ring of the first output bearing 3241 and the outer ring of the second output bearing 3242. As can be seen from the above, through the arrangement of the inner ring sleeve 3243 and the outer ring sleeve 3244, the inner ring sleeve 3243 abuts against the inner ring body of the first output bearing 3241 and the inner ring body of the second output bearing 3242 to prevent the inner ring body of the first output bearing 3241 and the inner ring body of the second output bearing 3242 from becoming loose. Similarly, the outer ring sleeve 3244 abuts against the outer ring body of the first output bearing 3241 and the outer ring body of the second output bearing 3242 to prevent the outer ring body of the first output bearing 3241 and the outer ring body of the second output bearing 3242 from becoming loose.

[0075] In one possible embodiment, the bracket 320 further includes a fixing sleeve 325 and a first support pad 326. The fixing sleeve 325 is connected to the output shaft 350, for example, by welding or threading the fixing sleeve 325 to the edge of the output shaft 350, and is located on the front side of the first output bearing 3241. The first support pad 326 is sleeved on the outside of the output shaft 350, with its front side abutting against the end of the inner ring of the first output bearing 3241, and its rear side abutting against the front end of the fixing sleeve 325. As can be seen from the above, the fixing sleeve 325 abuts against the inner ring of the first output bearing 3241 through the first support pad 326, thereby preventing the output shaft 350 from becoming loose from the inner ring of the first output bearing 3241, and ensuring that the output shaft 350 can stably output power.

[0076] In one possible embodiment, the bracket 320 further includes an elastic pad 328 and a second support pad 327. The elastic pad 328 and the second support pad 327 are both sleeved on the output shaft 350 and located between the inner ring sleeve 3243 and the first output bearing 3241. One side of the elastic pad 328 abuts against the front end of the inner ring sleeve 3243, and the second support pad 327 abuts against the end of the inner ring of the first output bearing 3241. The second support pad 327 also abuts against the elastic pad 328.

[0077] The elastic pad 328 is a wavy annular spring sheet. Under external force, the elastic sheet deforms axially, thus the elastic pad 328 exerts a large forward reaction force on the second support pad 327, thereby ensuring a stable abutment between the second support pad 327 and the inner ring of the first output bearing 3241, preventing loosening between the output shaft 350 and the inner ring of the first output bearing 3241. Simultaneously, the elastic pad 328 exerts a large backward reaction force on the inner ring sleeve 3243, ensuring a stable abutment between the inner ring sleeve 3243 and the inner ring of the second output bearing 3242, thus preventing loosening between the output shaft 350 and the inner ring of the first output bearing 3241. Alternatively, the elastic pad 328 and the second support pad 327 can be positioned between the inner ring sleeve 3243 and the second output bearing 3242.

[0078] In some embodiments, refer to Figure 1 and Figure 8 The drive unit 10 also includes a support 510 and a Hall sensor 500. The support 510 is interference-fitted with the tail of the drive component 200. The Hall sensor is mounted on the support 510 and is used to detect the operating condition of the drive component 200. The drive unit 10 with the above-described structure makes the assembly of the drive component 200 and other components connected to it more convenient.

[0079] In some embodiments, the drive device 10 further includes a housing 400 and a tail end cover 410. All the aforementioned components are assembled inside the housing 400. Some components are assembled through the front port of the housing 400, such as the transmission mechanism 300, while some components are assembled through the rear port of the housing 400, such as the drive unit 200 and the Hall sensor 500. The tail end cover 410 is sealed to the rear end of the housing 400. The inner side of the housing 400 and its internal components can be fixed with adhesive or by through-laser welding, which will not be described in detail here.

[0080] This application also discloses an electronic product, referring to... Figure 1 and Figure 5The electronic product uses the aforementioned drive device 10, which has the aforementioned structure. The base simultaneously positions the input gear 330 and the transmission gear assembly 310, thereby ensuring the center distance between the transmission gear assembly 310 and the input gear 330. The output gear 340 and the transmission gear assembly 310 can mesh precisely, so the output gear 340 can stably drive the transmission gear assembly 310 to rotate when rotating, thus ensuring that the drive device 10 can stably output power and stably drive the actuator of the electronic product. The electronic product has advantages such as stable operation, low noise, and high efficiency, which will not be elaborated upon here. The electronic product can be an electric toothbrush, shaver, fan, etc.

[0081] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A driving device, characterized in that, include: The base has positioning holes; A driving component, wherein the end of the driving component from which the driving shaft extends is provided with an annular protrusion, the annular protrusion being coaxial with the driving shaft of the driving component, and the annular protrusion being fitted into the positioning hole; The transmission mechanism includes an input gear, an output gear, and a transmission gear assembly. The input gear is connected to the drive shaft of the drive member. The transmission gear assembly is rotatably mounted on the base and meshes with the input gear and the output gear. The output gear is used for power output. At least two transmission gear assemblies are provided and are independently configured, and each transmission gear assembly is rotatably connected to the base; Each of the aforementioned transmission gear assemblies includes one or more gear structures, each gear structure including a transmission gear shaft, a first gear, and a second gear, wherein: The transmission gear shaft is connected to the base; Both the first gear and the second gear are connected to the transmission gear shaft. The second gear of the preceding gear structure meshes with the first gear of the following gear structure, so that multiple gear structures are meshed and connected in sequence. The first gear of the first gear structure meshes with the input gear, and the second gear of the tail gear structure meshes with the output gear. The transmission gear shaft of some of the gear structures can be the same transmission gear shaft. Wherein, the transmission gear shaft is fixedly connected to the base, the first gear and the second gear are integrally formed and rotatably connected to the transmission gear shaft; or, the transmission gear shaft is rotatably connected to the base.

2. The driving device according to claim 1, characterized in that, The transmission mechanism further includes a bracket, the bracket comprising: A connector, one end of which is connected to the base; Top seat, the other end of the connector is connected to the top seat; At least two support sleeves, each of the support sleeves being fitted onto the connector, wherein one end of at least one support sleeve abuts against the base, and one end of the other support sleeve abuts against the top seat; A partition is sleeved on the outside of the connector and abuts against the adjacent support sleeves. The gear shaft of the transmission mechanism is connected to the partition.

3. The driving device according to claim 1, characterized in that, The transmission mechanism also includes: A bracket, comprising a connector and a top seat, wherein one end of the connector is connected to the base and the other end of the connector is connected to the top seat; An output shaft is connected to the top seat, and an output gear is connected to the output shaft.

4. A driving device according to claim 3, characterized in that, The bracket also includes A first output bearing is provided, and the output shaft is rotatably connected to the top seat via the first output bearing. A fixed sleeve is connected to the output shaft; A first support pad is sleeved on the output shaft and abuts against the inner ring of the fixed sleeve and the first output bearing.

5. A driving device according to claim 4, characterized in that, The bracket further includes a second output bearing, an inner ring sleeve, an outer ring sleeve, and an elastic pad. The output shaft is rotatably connected to the top seat via the second output bearing. The inner ring sleeve abuts against the inner ring body of the first output bearing and the inner ring body of the second output bearing. The outer ring sleeve abuts against the outer ring body of the first output bearing and the outer ring body of the second output bearing. The elastic pad is held between the inner ring sleeve and the inner ring body of the first output bearing and / or the second output bearing.

6. A driving device according to claim 5, characterized in that, The drive device also includes a support and a Hall sensor. The support is interference-fitted with the tail of the drive component, and the Hall sensor is disposed on the support for detecting the operating condition of the drive component.

7. An electronic product, characterized in that, Includes the drive device as described in any one of claims 1 to 6.

Images