Clutch mechanism, planetary reducer and driving device

Abstract

The utility model relates to clutch technical field especially relates to a kind of clutch mechanism, planetary reducer and driving equipment.In clutch mechanism, accommodating recess is equipped on clutch seat, the inside wall of accommodating recess is equipped with the multiple side recesses of circumferential interval distribution, the side of clutch seat away from accommodating recess is equipped with the multiple first planetary column of circumferential interval distribution;Clutch disc includes clutch disc body and second sun gear, and clutch disc body is equipped with the multiple side convex parts of circumferential interval distribution;Clutch disc body is installed in accommodating recess, and side convex part is inserted into side recess;When the torque that clutch disc is received is less than or equal to preset torque, clutch disc body is fixed in accommodating recess;When the torque that clutch disc is received is greater than preset torque, clutch disc body rotates in accommodating recess.In the utility model, the clutch mechanism can realize the function of clutch by pure mechanical mechanism, has good waterproof effect, simple structure, low manufacturing cost, long service life.

Description

Technical Field

[0001] This utility model relates to the field of clutch technology, and in particular to a clutch mechanism, a planetary reducer and a drive device. Background Technology

[0002] As living standards improve, people have increasingly higher demands for the intelligence of products used in daily life. For example, smart toilets, smart dishwashers, sinks, washing machines, and home treadmills are becoming increasingly intelligent and automated. The automatic lid-opening function is a specific feature of these intelligent products. The automatic lid-opening function typically consists of a motor, a reducer, and a lid. The motor is connected to the lid through the reducer. Under the motor's power, the torque is increased by reducing speed to achieve the opening and closing action of the lid. In actual use, if the device is overloaded (i.e., the rotational force of the driven part is too large, or a large external force is applied in the opposite direction), the DC motor may stall, increasing the internal torque of the device and causing the drive to malfunction, rendering it unusable.

[0003] To prevent motor damage due to excessive load, an overload protection mechanism needs to be installed in the reducer. In existing technologies, overload protection mechanisms are typically implemented using electronic components, such as thermal relays. However, electronic components are prone to short circuits when water enters them, and their lifespan is relatively short. Summary of the Invention

[0004] This utility model provides a clutch mechanism, a planetary reducer, and a drive device to solve the technical problems of low waterproof rating and short service life of electronic components as overload protection mechanisms in the prior art.

[0005] An embodiment of this utility model provides a clutch mechanism, including a clutch seat and a clutch disc; The clutch seat is provided with a receiving groove, and the inner side wall of the receiving groove is provided with a plurality of side grooves distributed circumferentially. The side of the clutch seat opposite to the receiving groove is provided with a plurality of first planetary pillars distributed circumferentially. The clutch disc includes a clutch disc body and a second sun gear connected to the clutch disc body. The clutch disc body is provided with a plurality of side protrusions distributed circumferentially. The clutch disc is installed in the receiving groove, and the side protrusion is inserted into the side groove; When the torque applied to the clutch disc is less than or equal to the preset torque, the clutch disc body is fixed in the receiving groove; When the torque applied to the clutch disc is greater than the preset torque, the clutch disc body rotates in the receiving groove.

[0006] Optionally, the clutch disc body is further provided with a plurality of first through holes spaced apart, and each of the first through holes has a side protrusion on its outer wall, with the first through holes and the side protrusions being provided in a one-to-one correspondence.

[0007] Optionally, the second sun gear is a helical gear.

[0008] Optionally, each of the first planetary pillars is provided with a weight reduction hole.

[0009] An embodiment of this utility model also provides a planetary reducer, including a first planetary assembly, a second planetary assembly, an outer cylinder, and the aforementioned clutch mechanism; The outer cylinder is provided with a receiving hole, and the inner wall of the receiving hole is provided with a first internal gear ring; the first planetary assembly, the second planetary assembly, and the clutch mechanism are all installed in the receiving hole; The first planetary assembly includes a first sun gear and a plurality of first planet gears. The first planet gears are rotatably fitted onto the first planetary column in a corresponding manner. The first sun gear meshes with all the first planet gears, and all the first planet gears mesh with the first internal gear ring. The second planetary assembly includes a second planetary disk and a plurality of second planetary gears. The second planetary disk includes a second disk body and a plurality of second planetary posts arranged circumferentially on the second disk body. The second planetary gears are rotatably fitted onto the second planetary posts in a corresponding manner. The second sun gear meshes with all the second planetary gears, and all the second planetary gears mesh with the first internal gear ring.

[0010] Optionally, the clutch seat is further provided with a positioning protrusion on the side opposite to the receiving groove, and all the first planetary columns are circumferentially spaced around the positioning protrusion; The first sun gear is provided with a positioning through hole, and the positioning protrusion is inserted into the positioning through hole.

[0011] Optionally, a second internal gear ring is further provided on the inner wall of the receiving hole, and the first internal gear ring and the second internal gear ring are arranged sequentially at intervals along the axial direction of the receiving hole; The second planetary disk also includes a third sun wheel, which is disposed on the side of the second disk away from the second planetary column; The planetary reducer also includes a third planetary assembly installed in the receiving hole. The third planetary assembly includes a third planetary disk and a plurality of third planetary gears. All the third planetary gears are rotatably mounted on the third planetary disk. The third sun gear meshes with all the third planetary gears, and all the third planetary gears mesh with the second internal gear ring.

[0012] Optionally, the third planetary disk is further provided with a plurality of circumferentially spaced insertion holes, and the third planetary assembly further includes a plurality of third planetary pillars, each of which is inserted into the insertion hole in a corresponding manner, and each of the third planetary gears is rotatably sleeved on the third planetary pillar in a corresponding manner. The third planetary disk has an output shaft on the side opposite to the socket.

[0013] Optionally, the clutch disc and the second sun gear are integrally formed; the second disc, the second planetary column, and the third sun gear are integrally formed.

[0014] An embodiment of this utility model also provides a driving device, including a motor and the aforementioned planetary reducer, wherein the motor is mounted on the outer cylinder and the output end of the motor is connected to the first sun gear.

[0015] In this invention, the clutch seat is provided with a receiving groove, and the inner wall of the receiving groove is provided with a plurality of circumferentially spaced side grooves. On the side of the clutch seat opposite to the receiving groove, a plurality of circumferentially spaced first planetary posts are provided. The first planetary posts can be used to engage the first planetary gears of the first planetary assembly. The clutch disc includes a clutch disc body and a second sun gear connected to the clutch disc body. The clutch disc body is provided with a plurality of circumferentially spaced side protrusions, and the second sun gear can serve as the sun gear of the second planetary assembly. The clutch disc body is installed in the receiving groove, and the side protrusion is inserted into the side groove. When the torque between the clutch discs is less than or equal to a preset torque (i.e., the torque between the clutch seat and the clutch disc is small), the clutch disc body is fixed in the receiving groove, and the clutch seat and the clutch disc rotate synchronously. When the torque between the clutch discs is greater than the preset torque (i.e., the torque between the clutch seat and the clutch disc is large), the clutch disc body rotates in the receiving groove, the side protrusion slides between multiple side grooves, and the clutch disc and the clutch seat will rotate relative to each other. The side protrusion can pass over different side grooves, so that the large torque will not be transmitted to the clutch seat and the motor, thus protecting the clutch mechanism and the clutch disc. In this utility model, the clutch mechanism can realize the clutch function through a purely mechanical mechanism. The clutch mechanism has a good waterproof effect, and the clutch mechanism has a simple structure, low manufacturing cost, and long service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the clutch mechanism provided in one embodiment of the present invention; Figure 2 This is an exploded structural diagram of a clutch mechanism provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the clutch seat provided in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a drive device provided in an embodiment of the present invention; Figure 5 This is a partial structural schematic diagram of a planetary reducer provided in one embodiment of the present invention; Figure 6 This is a partial exploded structural diagram of a planetary deceleration device provided in one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the outer cylinder provided in one embodiment of the present invention.

[0018] The reference numerals in the accompanying drawings are as follows: 1. Clutch mechanism; 11. Clutch seat; 111. Receiving groove; 112. Side groove; 113. First planetary column; 114. Weight reduction hole; 115. Positioning protrusion; 12. Clutch disc; 121. Clutch disc body; 122. Second sun gear; 123. Side protrusion; 124. First through hole; 2. First planetary assembly; 21. First sun gear; 22. First planetary gear; 3. Second planetary assembly; 31. Second planetary disk; 311. Second disk body; 312. Second planetary column; 313. Third sun gear; 32. Second planetary gear; 4. Outer cylinder; 41. Receiving hole; 42. First internal gear ring; 43. Second internal gear ring; 5. Third planetary assembly; 51. Third planetary disk; 511. Output shaft body; 52. Third planetary gear; 53. Third planetary column; 6. Motor. Detailed Implementation

[0019] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a clutch mechanism 1, which includes a clutch seat 11 and a clutch disc 12; The clutch seat 11 is provided with a receiving groove 111, and the inner side wall of the receiving groove 111 is provided with a plurality of side grooves 112 distributed circumferentially, and the clutch seat 11 is provided with a plurality of first planetary pillars 113 distributed circumferentially on the side opposite to the receiving groove 111. The clutch disc 12 includes a clutch disc body 121 and a second sun gear 122 connected to the clutch disc body 121. The clutch disc body 121 is provided with a plurality of circumferentially spaced side protrusions 123. The clutch disc 121 is installed in the receiving groove 111, and the side protrusion 123 is inserted into the side groove 112; When the torque on the clutch disc 12 is less than or equal to the preset torque, the clutch disc body 121 is fixed in the receiving groove 111; When the torque on the clutch disc 12 is greater than the preset torque, the clutch disc body 121 rotates in the receiving groove 111.

[0021] The number of the first planetary pillars 113 can be set according to actual needs, for example, there can be 3 or 4 first planetary pillars 113; a ring of side grooves 112 is provided on the inner side wall of the receiving groove 111; multiple first planetary pillars 113 are circumferentially spaced around the axis of the receiving groove 111. The second sun gear 122 and the clutch disc 121 are a single molded part, and the number of side protrusions 123 can be set according to actual needs, for example, there can be 3 or 4 side protrusions 123; the preset torque can be set according to actual needs.

[0022] In this invention, the clutch seat 11 is provided with a receiving groove 111, and the inner sidewall of the receiving groove 111 is provided with a plurality of circumferentially spaced side grooves 112. The clutch seat 11, on the side opposite to the receiving groove 111, is provided with a plurality of circumferentially spaced first planetary posts 113, which can be used to engage the first planetary gears 22 of the first planetary assembly 2. The clutch disc 12 includes a clutch disc body 121 and a second sun gear 122 connected to the clutch disc body 121. The clutch disc body 121 is provided with a plurality of circumferentially spaced side protrusions 123, and the second sun gear 122 can serve as the sun gear of the second planetary assembly 3. The clutch disc body 121 is installed in the receiving groove 111, and the side protrusion 123 is inserted into the side groove 112. When the torque on the clutch disc 12 is less than or equal to a preset torque (that is, the torque between the clutch seat 11 and the clutch disc 12 is small), the clutch disc body 121 is fixed in the receiving groove 111, and the clutch seat 11 and the clutch disc 12 rotate synchronously. When the torque on the clutch disc 12 is greater than the preset torque (that is, the torque between the clutch seat 11 and the clutch disc 12 is large), the clutch disc body 121 rotates in the receiving groove 111, and the side protrusion 123 slides between multiple side grooves 112. The clutch disc 12 and the clutch seat 11 will rotate relative to each other. The side protrusion 123 can pass over different side grooves 112, so that the large torque will not be transmitted to the clutch seat 11 and the motor 6, thus protecting the clutch mechanism 1 and the clutch disc 12. In this utility model, the clutch mechanism 1 can realize the clutch function through a purely mechanical mechanism. The clutch mechanism 1 has a good waterproof effect, and the clutch mechanism 1 has a simple structure, low manufacturing cost, and long service life.

[0023] In one embodiment, such as Figure 2 As shown, the clutch disc body 121 is also provided with a plurality of first through holes 124 spaced apart, and each of the first through holes 124 has a side protrusion 123 on its outer wall, and the first through holes 124 and the side protrusions 123 are provided in a one-to-one correspondence.

[0024] The first through holes 124 are arranged circumferentially around the second sun gear 122, and the side protrusions 123 are located outside the first through holes 124.

[0025] In this embodiment, the design of the first through hole 124 allows the clutch disc body 121 to easily undergo elastic deformation. When the torque between the clutch seat 11 and the clutch disc 12 is large, the elastic deformation of the clutch disc body 121 allows the side protrusion 123 to slide between different side grooves 112, and the clutch disc body 121 to rotate in the receiving groove 111, resulting in relative rotation between the clutch disc 12 and the clutch seat 11. Furthermore, the design of the first through hole 124 also helps to reduce weight, lowering the weight of the clutch disc 12.

[0026] In one embodiment, such as Figure 1 As shown, the second sun gear 122 is a helical gear.

[0027] In one embodiment, such as Figure 3 As shown, each of the first planetary pillars 113 is provided with a weight reduction hole 114.

[0028] In this embodiment, the first planetary column 113 is a hollow structural component, and the design of the weight-reducing hole 114 reduces the weight of the clutch seat 11.

[0029] like Figures 4 to 7 As shown, another embodiment of the present invention also provides a planetary reducer, including a first planetary assembly 2, a second planetary assembly 3, an outer cylinder 4, and the aforementioned clutch mechanism 1; The outer cylinder 4 is provided with a receiving hole 41, and the inner wall of the receiving hole 41 is provided with a first internal gear ring 42; the first planetary assembly 2, the second planetary assembly 3 and the clutch mechanism 1 are all installed in the receiving hole 41; The first planetary assembly 2 includes a first sun gear 21 and a plurality of first planet gears 22. The first planet gears 22 are rotatably sleeved on the first planetary column 113 in a one-to-one correspondence. The first sun gear 21 meshes with all the first planet gears 22, and all the first planet gears 22 mesh with the first internal gear ring 42. The second planetary assembly 3 includes a second planetary disk 31 and a plurality of second planetary gears 32. The second planetary disk 31 includes a second disk body 311 and a plurality of second planetary posts 312 circumferentially spaced on the second disk body 311. The second planetary gears 32 are rotatably sleeved on the second planetary posts 312 in a one-to-one correspondence. The second sun gear 122 meshes with all the second planetary gears 32. All the second planetary gears 32 mesh with the first internal gear ring 42.

[0030] The number of the first planetary gear 22 and the second planetary gear 32 can be set according to actual needs; the second planetary assembly 3 is located above the first planetary assembly 2, and the first sun gear 21 and the second sun gear 122 are coaxially arranged.

[0031] In this invention, the first planetary assembly 2 can serve as a primary reduction mechanism, and the second planetary assembly 3 can serve as a secondary reduction mechanism. The clutch mechanism 1 can act as a clutch between the first planetary assembly 2 and the second planetary assembly 3. The planetary reducer has a compact structure, occupies little space, and has a large reduction ratio. In addition, all the first planetary gears 22 and all the second planetary gears 32 are connected to the core of the first internal gear ring 42, so that the first planetary assembly 2 and the second planetary assembly 3 are used for one first internal gear ring 42, which reduces the manufacturing difficulty of the outer cylinder 4 and lowers the manufacturing cost of the outer cylinder 4.

[0032] In one embodiment, such as Figure 3 As shown, the clutch seat 11 is also provided with a positioning protrusion 115 on the side opposite to the receiving groove 111, and all the first planetary pillars 113 are circumferentially spaced around the positioning protrusion 115. The first sun gear 21 is provided with a positioning through hole (not shown in the figure), and the positioning protrusion 115 is inserted into the positioning through hole.

[0033] The positioning protrusion 115 is disposed at the bottom of the clutch seat 11, the first sun gear 21 is inserted between multiple first sun gears 21, and the positioning protrusion 115 is inserted into the positioning hole of the first sun gear 21 from above, thereby ensuring the stability of the first sun gear 21.

[0034] In one embodiment, such as Figures 5 to 7 As shown, a second internal gear ring 43 is also provided on the inner wall of the receiving hole 41, and the first internal gear ring 42 and the second internal gear ring 43 are arranged sequentially at intervals along the axial direction of the receiving hole 41. The second planetary disk 31 also includes a third sun wheel 313, which is disposed on the side of the second disk body 311 away from the second planetary column 312; The planetary reducer also includes a third planetary assembly 5 installed in the receiving hole 41. The third planetary assembly 5 includes a third planetary disk 51 and a plurality of third planetary gears 52. All the third planetary gears 52 are rotatably mounted on the third planetary disk 51. The third sun gear 313 meshes with all the third planetary gears 52. All the third planetary gears 52 mesh with the second internal gear ring 43.

[0035] The second internal gear ring 43 is located above the first internal gear ring 42; the number of the third planetary gears 52 can be set according to actual needs, for example, the third planetary gears 52 can be 3 or 4, etc.

[0036] In this embodiment, the third planetary assembly 5 can serve as a three-stage reduction mechanism, thereby giving the planetary reducer a three-stage reduction function and further increasing the reduction ratio of the planetary reducer.

[0037] In one embodiment, such as Figure 6 As shown, the third planetary disk 51 is also provided with a plurality of circumferentially spaced insertion holes (not shown in the figure), and the third planetary assembly 5 also includes a plurality of third planetary pillars 53, which are inserted into the insertion holes one by one, and the third planetary gears 52 are rotatably sleeved on the third planetary pillars 53 one by one. The third planetary disk 51 has an output shaft 511 on the side opposite to the socket.

[0038] The output shaft 511 is the output end of the planetary reducer, and the first sun gear 21 is the input end of the planetary reducer; the end of the output shaft 511 away from the third planetary disk 51 extends out of the receiving hole 41.

[0039] In this embodiment, the third planetary pillar 53 and the third planetary disk 51 are separate structural components, which facilitates the assembly and disassembly of the third planetary assembly 5.

[0040] In one embodiment, such as Figure 6 As shown, the clutch disc 121 and the second sun gear 122 are integrally formed parts; the second disc 311, the second planetary column 312 and the third sun gear 313 are integrally formed parts; the planetary reducer has a simple structure and low manufacturing cost.

[0041] like Figure 4 As shown, one embodiment of the present invention also provides a driving device, including a motor 6 and the aforementioned planetary reducer. The motor 6 is mounted on the outer cylinder 4, and the output end of the motor 6 is connected to the first sun gear 21.

[0042] Specifically, the motor 6 drives the first sun gear 21 to rotate, the first sun gear 21 drives the clutch seat 11 and the clutch disc 12 to rotate via the first planetary gear 22, the clutch disc 12 drives the second sun gear 122 and the second planetary disk 31 to rotate via the second sun gear 122, and the second planetary disk 31 drives the third planetary gear 52 and the third planetary disk 51 to rotate via the third sun gear 313.

[0043] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A clutch mechanism, characterized in that, Includes clutch seat and clutch disc; The clutch seat is provided with a receiving groove, and the inner side wall of the receiving groove is provided with a plurality of side grooves distributed circumferentially. The side of the clutch seat opposite to the receiving groove is provided with a plurality of first planetary pillars distributed circumferentially. The clutch disc includes a clutch disc body and a second sun gear connected to the clutch disc body. The clutch disc body is provided with a plurality of side protrusions distributed circumferentially. The clutch disc is installed in the receiving groove, and the side protrusion is inserted into the side groove; When the torque applied to the clutch disc is less than or equal to the preset torque, the clutch disc body is fixed in the receiving groove; When the torque applied to the clutch disc is greater than the preset torque, the clutch disc body rotates in the receiving groove.

2. The clutch mechanism according to claim 1, characterized in that, The clutch disc body is also provided with a plurality of first through holes spaced apart, and each of the first through holes has a side protrusion on its outer wall, with the first through holes and the side protrusions being provided in a one-to-one correspondence.

3. The clutch mechanism according to claim 1, characterized in that, The second sun gear is a helical gear.

4. The clutch mechanism according to claim 1, characterized in that, Each of the first planetary pillars has a weight reduction hole.

5. A planetary reducer, characterized in that, It includes a first planetary assembly, a second planetary assembly, an outer cylinder, and a clutch mechanism as described in any one of claims 1 to 4; The outer cylinder is provided with a receiving hole, and the inner wall of the receiving hole is provided with a first internal gear ring; the first planetary assembly, the second planetary assembly, and the clutch mechanism are all installed in the receiving hole; The first planetary assembly includes a first sun gear and a plurality of first planet gears. The first planet gears are rotatably fitted onto the first planetary column in a corresponding manner. The first sun gear meshes with all the first planet gears, and all the first planet gears mesh with the first internal gear ring. The second planetary assembly includes a second planetary disk and a plurality of second planetary gears. The second planetary disk includes a second disk body and a plurality of second planetary posts arranged circumferentially on the second disk body. The second planetary gears are rotatably fitted onto the second planetary posts in a corresponding manner. The second sun gear meshes with all the second planetary gears, and all the second planetary gears mesh with the first internal gear ring.

6. The planetary reducer according to claim 5, characterized in that, The clutch seat is also provided with a positioning protrusion on the side opposite to the receiving groove, and all the first planetary columns are circumferentially spaced around the positioning protrusion. The first sun gear is provided with a positioning through hole, and the positioning protrusion is inserted into the positioning through hole.

7. The planetary reducer according to claim 5, characterized in that, The inner wall of the receiving hole is also provided with a second internal gear ring, and the first internal gear ring and the second internal gear ring are arranged sequentially at intervals along the axial direction of the receiving hole; The second planetary disk also includes a third sun wheel, which is disposed on the side of the second disk away from the second planetary column; The planetary reducer also includes a third planetary assembly installed in the receiving hole. The third planetary assembly includes a third planetary disk and a plurality of third planetary gears. All the third planetary gears are rotatably mounted on the third planetary disk. The third sun gear meshes with all the third planetary gears, and all the third planetary gears mesh with the second internal gear ring.

8. The planetary reducer according to claim 7, characterized in that, The third planetary disk is also provided with a plurality of circumferentially spaced insertion holes. The third planetary assembly also includes a plurality of third planetary pillars, each of which is inserted into the insertion hole in a corresponding manner. The third planetary gears are rotatably sleeved on the third planetary pillars in a corresponding manner. The third planetary disk has an output shaft on the side opposite to the socket.

9. The planetary reducer according to claim 7, characterized in that, The clutch disc and the second sun gear are integrally formed; the second disc, the second planetary column, and the third sun gear are integrally formed.

10. A driving device, characterized in that, It includes a motor and a planetary reducer as described in any one of claims 5 to 9, wherein the motor is mounted on the outer cylinder and the output end of the motor is connected to the first sun gear.

Images