Gear motor and electric equipment

Abstract

The utility model provides a gear motor and electric equipment, and belongs to the technical field of motors, the gear motor comprises a shell, a motor main body, a transmission mechanism and a rotating speed detection device, the motor main body, the transmission mechanism and the rotating speed detection device are arranged in the shell, and the transmission mechanism comprises a middle transmission structure and an output shaft; the motor body is in transmission connection with the output shaft through the middle transmission structure. The rotating speed detection device is located on one side of the output shaft in the radial direction. The rotating speed detection device is arranged in the shell of the speed reduction motor, so that the rotating speed of the motor can be detected, and the rotating speed detection device can be protected; besides, the rotating speed detection device is arranged on one side of the output shaft in the radial direction, so that the rotating speed detection device is prevented from occupying the space of the speed reduction motor in the height direction, the size of the speed reduction motor is reduced, and the motor with the small size occupies less equipment space during installation; the size of the equipment is reduced; and the layout of other structures on the equipment is facilitated.

Description

Technical Field

[0001] This application belongs to the field of motor technology, and in particular relates to a geared motor and an electric device. Background Technology

[0002] Brushless geared motors have a wide range of applications. When high precision speed control is required, a magnetic plate and a magnetic encoder are usually added to the end of the output shaft to detect the final output speed of the motor. However, placing a magnetic plate and a magnetic encoder at the end of the output shaft of a brushless geared motor results in an overall increase in height and size. Utility Model Content

[0003] The purpose of this application is to provide a geared motor and an electric device to solve the technical problem of the large size of the geared motor in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] The first aspect of this application provides a geared motor, comprising:

[0006] case;

[0007] The motor body is housed within the casing;

[0008] The transmission mechanism is housed within the housing. The transmission mechanism includes an intermediate transmission structure and an output shaft. The motor body is connected to the output shaft via the intermediate transmission structure.

[0009] The speed detection device is located inside the housing and on one side of the output shaft in the radial direction.

[0010] In some implementations, the housing includes a first housing, a second housing, and an intermediate housing. The first housing and the second housing are disposed at both ends of the intermediate housing. The first housing and the intermediate housing form a first cavity, and the second housing and the intermediate housing form a second cavity. The two ends of the output shaft extend into the first cavity and the second cavity, respectively, and the speed detection device is located in the second cavity.

[0011] In some implementations, the intermediate transmission structure is located in the first cavity, and the intermediate housing is provided with a clearance hole. The speed detection device cooperates with the intermediate transmission structure through the clearance hole.

[0012] In some implementations, the transmission mechanism includes at least one drive shaft rotatably connected to the housing, and a speed detection device is located at one end of one of the drive shafts for detecting the speed of the drive shaft.

[0013] In some implementations, the speed detection device is a magnetic encoder, which includes a magnetic element and a magnetic sensor. The magnetic element is directly or indirectly fixed to one end of one of the drive shafts, and the magnetic sensor faces the magnetic element.

[0014] In some implementations, the intermediate transmission structure includes two or more transmission shafts, which are connected sequentially along the transmission direction of the intermediate transmission structure. The transmission shaft closest to the output shaft along the transmission direction of the intermediate transmission structure is the final stage transmission shaft, and a speed detection device is provided at one end of the final stage transmission shaft.

[0015] In some implementations, the intermediate transmission structure includes multiple gears. Gears are provided on the motor shaft, transmission shaft, and output shaft of the motor body. The intermediate transmission structure includes a primary transmission shaft, an intermediate transmission shaft, and a final transmission shaft. The gears on the primary transmission shaft mesh with the gears on the motor shaft, and the gears on the final transmission shaft mesh with the gears on the output shaft.

[0016] In some implementations, there is at least one intermediate drive shaft, and two gears are provided on some or all of the intermediate drive shafts. The two gears are a first gear and a second gear, respectively. The diameter of the first gear is larger than the diameter of the second gear. The first gear is used to mesh with the previous gear in the transmission direction of the transmission mechanism, and the second gear is used to mesh with the next gear in the transmission direction of the transmission mechanism.

[0017] In some implementations, bearings are provided at both ends of the drive shaft, and the drive shaft is supported inside the housing by the bearings; or, an upper convex ring and a lower convex ring are formed on the housing, and the two ends of the drive shaft are respectively inserted into the upper convex ring and the lower convex ring, and wear-resistant rings are provided on the end faces of the upper convex ring and the lower convex ring, and the gear on the drive shaft is located between the two wear-resistant rings.

[0018] In some implementations, the housing has an upper cylindrical portion and a lower cylindrical portion. A first bearing is disposed inside the lower cylindrical portion, and one end of the final stage drive shaft is inserted into the first bearing on the lower cylindrical portion. A second bearing is sleeved on the upper cylindrical portion and disposed between the upper cylindrical portion and the gear on the final stage drive shaft.

[0019] A second aspect of this application provides an electric device, including a geared motor as provided in any of the above technical solutions.

[0020] The beneficial effects of this application are as follows: The geared motor provided in this application embodiment, by setting a speed detection device inside the geared motor housing, can not only detect the speed of the motor, but also protect the speed detection device; in addition, by setting the speed detection device on one side in the radial direction of the output shaft, the speed detection device is avoided from occupying the space in the height direction of the geared motor, which helps to reduce the size of the geared motor. Moreover, the small size of the motor occupies less space in the equipment during installation, which is conducive to reducing the size of the equipment and facilitating the layout of other structures on the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the geared motor provided in an embodiment of this application;

[0023] Figure 2 This is another structural schematic diagram of the geared motor provided in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the internal structure of the geared motor provided in an embodiment of this application;

[0025] Figure 4 This is another internal schematic diagram of the geared motor provided in an embodiment of this application;

[0026] Figure 5 An exploded view of the geared motor provided in an embodiment of this application;

[0027] Figure 6 Another exploded view of the geared motor provided in the embodiments of this application;

[0028] Figure 7 A cross-sectional schematic diagram of the geared motor provided in an embodiment of this application;

[0029] Figure 8 A cross-sectional schematic diagram of the housing provided in an embodiment of this application;

[0030] Figure 9 A top view of the geared motor provided in an embodiment of this application;

[0031] Figure 10 for Figure 9 Schematic diagram of the sectional view along the central AA direction;

[0032] Figure 11This is a schematic diagram of the structure of the motor body and transmission mechanism provided in the embodiments of this application;

[0033] Figure 12 This is another structural schematic diagram of the motor body and transmission mechanism provided in an embodiment of this application;

[0034] Figure 13 A top view of the geared motor provided in an embodiment of this application;

[0035] Figure 14 for Figure 13 Schematic diagram of the BB-direction section;

[0036] Figure 15 A schematic diagram of the structure of the first housing provided in an embodiment of this application;

[0037] Figure 16 A schematic diagram of the structure of the second housing provided in an embodiment of this application;

[0038] Figure 17 This is a schematic diagram of the structure of the geared motor provided in an embodiment of this application;

[0039] Figure 18 This is a cross-sectional schematic diagram of the geared motor provided in an embodiment of this application.

[0040] The following are the labeling elements in the figure:

[0041] 10- Gear motor;

[0042] 100-Housing; 200-Motor body; 300-Intermediate transmission structure; 400-Output shaft; 500-Speed ​​detection device; 600-Wire harness; 700-Oil seal; 800-Magnetic ring holder; 900-Wear ring; 101-First bearing; 102-Second bearing; 103-Third bearing; 104-Fourth bearing;

[0043] 110 - First cavity; 120 - Second cavity; 130 - First housing; 140 - Second housing; 150 - Intermediate housing; 160 - Protective housing; 170 - Seal; 180 - Opening;

[0044] 111 - Motor placement space;

[0045] 131-First cylindrical section; 132-Mounting groove; 133-Lower cylindrical section; 134-Lower convex ring; 135-First baffle;

[0046] 1341 - First lower convex ring; 1342 - Second lower convex ring; 1343 - Third lower convex ring; 1344 - Fourth lower convex ring;

[0047] 141 - Fourth cylinder section; 142 - Wiring hole;

[0048] 151-Second cylindrical section; 152-Third cylindrical section; 153-First sealing groove; 154-Allowing hole; 155-Upper cylindrical section; 156-Upper convex ring; 157-Positioning pin; 158-Second baffle;

[0049] 1561 - First upper convex ring; 1562 - Second upper convex ring; 1563 - Third upper convex ring; 1564 - Fourth upper convex ring;

[0050] 210 - Motor shaft;

[0051] 310 - Drive shaft; 320 - Gear;

[0052] 311 - First-stage drive shaft; 312 - Last-stage drive shaft; 313 - Intermediate drive shaft;

[0053] 3131 - First intermediate drive shaft; 3132 - Second intermediate drive shaft; 3133 - Third intermediate drive shaft;

[0054] 321 - First gear; 322 - Second gear;

[0055] 510 - Magnetic component; 520 - Magnetic sensor; 530 - Hall plate. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0057] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 limitations on this application.

[0058] To facilitate a clear description of the technical solutions of this application, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" do not necessarily imply that they are different.

[0059] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0061] It should be noted that, in this application, the words "in one embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0062] Please see Figures 1-4 , Figure 1 This is a schematic diagram of the structure of the geared motor 10 provided in the embodiments of this application. Figure 2 This is another structural schematic diagram of the geared motor 10 provided in the embodiments of this application. Figure 3 This is a schematic diagram of the internal structure of the geared motor 10 provided in an embodiment of this application. Figure 4 This is another internal schematic diagram of the geared motor 10 provided in an embodiment of this application. For ease of description, please refer to... Figure 1 In this embodiment of the application, the length direction of the geared motor 10 is defined as the X-axis direction, the width direction of the geared motor 10 is defined as the Y-axis direction, and the height direction of the geared motor 10 is defined as the Z-axis direction. The X-axis direction, Y-axis direction and Z-axis direction are perpendicular to each other.

[0063] This application provides a geared motor 10, including a housing 100, a motor body 200, and a transmission mechanism.

[0064] Please see Figure 1 and Figure 2The diagram illustrates the housing 100 of the geared motor 10. The motor body 200 and the transmission mechanism are housed within the housing 100. The housing 100 serves as the mounting base for the motor body 200 and the transmission mechanism, and also provides protection for the motor body 200 and the transmission mechanism.

[0065] Please see Figure 4 The transmission mechanism includes an intermediate transmission structure 300 and an output shaft 400. The motor body 200 is connected to the output shaft 400 via the intermediate transmission structure 300. Please refer to [link / reference]. Figure 3 The diagram illustrates the motor body 200. When the motor body 200 moves, it can drive the output shaft 400 to rotate through the intermediate transmission structure 300.

[0066] In one example, the motor body 200 is a brushless motor. Brushless motors are primarily based on electronic commutation technology, achieving continuous rotor rotation by controlling the direction and magnitude of the current. Please see [link to relevant documentation]. Figures 1-4 The diagram illustrates the wiring harness 600 that connects to the motor body 200.

[0067] In this embodiment of the application, please refer to Figure 3 The geared motor 10 also includes a speed detection device 500, which is disposed inside the housing 100 and is used to detect the speed of the geared motor 10.

[0068] In one example, the speed detection device 500 is a magnetic encoder, a laser speed sensor, or a photoelectric encoder, etc.

[0069] In existing related technologies, a magnetic sheet and a magnetic encoder are usually installed at the tail end of the output shaft of a brushless geared motor to detect the motor's output speed. However, this results in the overall height of the brushless geared motor (with the output shaft axis pointing in the direction of the motor's height) being too high and its size being too large. In the embodiments of this application, please refer to... Figure 3 The speed detection device 500 is located on one side of the output shaft 400 in the radial direction. This avoids the speed detection device 500 occupying space in the height direction of the geared motor 10, which helps to reduce the size of the geared motor 10.

[0070] In one example, the speed detection device 500 directly detects the speed of the output shaft 400. For instance, the speed detection device 500 is a photoelectric sensor, with reflective marks or openings provided on the circumferential side of the output shaft 400. The photoelectric sensor calculates the speed by detecting the on / off frequency of the light signal.

[0071] In one example, the speed detection device 500 detects the speed of a component in the intermediate transmission structure 300. For instance, when the intermediate transmission structure 300 is a gear reduction mechanism, the speed of one of the gears 320 in the intermediate transmission structure 300 or the speed of one of the transmission shafts 310 in the intermediate transmission structure 300 can be detected. The speed of a component in the intermediate transmission structure 300 is then used as the output speed of the geared motor 10.

[0072] In this embodiment, by providing a speed detection device 500 inside the housing 100 of the geared motor 10, not only can the speed of the motor be detected, but the speed detection device 500 can also be protected. In addition, by placing the speed detection device 500 on one side of the output shaft 400 in the radial direction, the speed detection device 500 is avoided from occupying the space in the height direction of the geared motor 10, which helps to reduce the volume of the geared motor 10. Moreover, a smaller motor occupies less space in the equipment during installation, which is beneficial to reducing the size of the equipment and facilitating the layout of other structures on the equipment.

[0073] Please see Figures 5-8 , Figure 5 This is an exploded view of the geared motor 10 provided in the embodiments of this application. Figure 6 This is another exploded view of the geared motor 10 provided in the embodiments of this application. Figure 7 This is a cross-sectional schematic diagram of the geared motor 10 provided in an embodiment of this application. Figure 8 This is a cross-sectional schematic diagram of the housing 100 provided in an embodiment of this application.

[0074] In one embodiment, please refer to Figures 5-6 The housing 100 includes a first housing 130, a second housing 140, and an intermediate housing 150. The first housing 130 and the second housing 140 are disposed at both ends of the intermediate housing 150. Please refer to [link to relevant documentation]. Figure 8 The first shell 130 and the intermediate shell 150 form a first cavity 110, and the second shell 140 and the intermediate shell 150 form a second cavity 120. Please refer to [link / reference]. Figure 7 The two ends of the output shaft 400 extend into the first cavity 110 and the second cavity 120 respectively, and the speed detection device 500 is located in the second cavity 120.

[0075] Please see Figures 5-6The first housing 130, the intermediate housing 150, and the second housing 140 are arranged along the height direction of the geared motor 10. In one example, the first housing 130 and the intermediate housing 150 are detachably connected, for example, by screws or bolts; the intermediate housing 150 and the second housing 140 are detachably connected, for example, by screws or bolts.

[0076] Please see Figure 7 This illustrates that the speed detection device 500 is located on one side of the output shaft 400 in the radial direction, which avoids the speed detection device 500 occupying the space in the height direction of the geared motor 10.

[0077] In one example, see Figure 8 A first cylindrical portion 131 extending toward the intermediate shell 150 is formed on the first shell 130, and a second cylindrical portion 151 extending toward the first shell 130 is formed on the intermediate shell 150. (See also...) Figure 7 Bearings are respectively provided on the first cylindrical part 131 and the second cylindrical part 151. The bearing on the first cylindrical part 131 can be called the third bearing 103, and the bearing on the second cylindrical part 151 can be called the fourth bearing 104. The two ends of the output shaft 400 pass through the third bearing 103 and the fourth bearing 104 respectively to be supported on the housing 100.

[0078] In one example, see Figure 8 A mounting groove 132 is provided on the side of the first housing 130 opposite to the intermediate housing 150. The axis of the mounting groove 132 is collinear with the axis of the first cylindrical part 131 and the two are connected. An oil seal 700 is provided in the mounting groove 132. The oil seal 700 has the functions of preventing lubricating oil leakage and preventing external impurities from entering. Please refer to [link to relevant documentation]. Figure 7 One end of the output shaft 400 passes through the oil seal 700 in the mounting groove 132 and extends out of the first housing 130.

[0079] In one example, see Figure 8 A third cylindrical portion 152 is formed on the side of the intermediate housing 150 opposite to the first housing 130. The third cylindrical portion 152 and the second cylindrical portion 151 are collinear and internally connected. An oil seal 700 is provided inside the third cylindrical portion 152. Please refer to [link to relevant documentation]. Figure 7 The other end of the output shaft 400 is inserted into the oil seal 700 inside the third cylinder 152.

[0080] In one example, see Figure 8 A first sealing groove 153 is provided on the end face of the third cylindrical section 152. Please refer to [link / reference]. Figure 7A sealing element 170 is provided in the first sealing groove 153, and the sealing element 170 is pressed between the third cylindrical part 152 and the second housing 140 to improve the sealing performance of the geared motor 10 housing 100.

[0081] In one example, the output shaft 400 is a solid shaft to improve its strength; in other examples, the output shaft 400 is a hollow shaft to reduce the weight of the geared motor 10 and facilitate wiring through the output shaft 400.

[0082] In one example, see Figure 8 A fourth cylindrical portion 141 extending toward the intermediate shell 150 is formed on the second shell 140, see [link to relevant documentation]. Figure 7 The fourth cylindrical portion 141 is inserted into one end of the output shaft 400. In this example, by providing the fourth cylindrical portion 141, the second housing 140 and the output shaft 400 can be positioned and installed.

[0083] In one example, a positioning post 157 is provided on the housing 100 to facilitate the positioning and installation of the geared motor 10 with other structures. For example, please refer to... Figure 5 This illustrates that a positioning post 157 is provided on the intermediate housing 150. In one example, please refer to... Figures 7-8 Part of the positioning post 157 extends beyond the housing 100 through the second housing 140. Please refer back to [link / reference]. Figure 2 The positions of some positioning posts 157 on the intermediate housing 150 are exposed outside the housing 100.

[0084] In one example, see Figure 7 A sealing element 170 is provided between the first housing 130 and the intermediate housing 150 for sealing cooperation between the two; a sealing element 170 is provided between the second housing 140 and the intermediate housing 150 for sealing cooperation between the two.

[0085] In this embodiment, the housing 100 is provided with a first housing 130, a second housing 140 and an intermediate housing 150 to facilitate the assembly of the geared motor 10; the output shaft 400 is provided with both ends extending into the first cavity 110 and the second cavity 120 respectively, and the speed detection device 500 is located in the second cavity 120, so that the speed detection device 500 can be provided on one side of the output shaft 400 in the radial direction.

[0086] In one embodiment, the intermediate transmission structure 300 is located in the first cavity 110, and the intermediate housing 150 is provided with a clearance hole 154. The speed detection device 500 cooperates with the intermediate transmission structure 300 through the clearance hole 154.

[0087] In this embodiment of the application, the speed detection device 500 cooperates with the intermediate transmission structure 300, which means that the speed detection device 500 detects the speed of a certain component in the intermediate transmission structure 300.

[0088] Please see Figure 6 This illustrates that the intermediate transmission structure 300 is located on the side of the intermediate housing 150 opposite to the second housing 140, that is, the intermediate transmission structure 300 is located within the first cavity 110 formed by the intermediate housing 150 and the second housing 140. Please refer to [link / reference]. Figure 7 Since the speed detection device 500 is located in the second cavity 120, a clearance hole 154 needs to be provided on the intermediate housing 150. Figure 7 The clearance hole 154 is not shown in the figure, so as to facilitate the cooperation between the speed detection device 500 and the intermediate transmission structure 300.

[0089] Please see Figure 8 A motor placement space 111 is formed in the second cavity 120. The motor body 200 is located in the motor placement space 111 and the motor shaft 210 of the motor body 200 passes through the intermediate housing 150 and is connected to the intermediate transmission structure 300.

[0090] In one example, see Figure 7 One end of the motor body 200 is close to the inner side of the second housing 140. For example, the distance between the motor body 200 and the inner side of the second housing 140 is 0 to 50 mm, so as to make the internal structure of the geared motor 10 compact and reduce the volume of the geared motor 10.

[0091] In one example, the distance between the motor body 200 and the inner side of the second housing 140 ranges from 0 to 10 mm, 10 to 20 mm, 20 to 30 mm, 30 to 40 mm, or 40 to 50 mm.

[0092] In one example, the motor body 200 is detachably connected to the intermediate housing 150 by screws or bolts to facilitate the assembly and disassembly of the motor body 200 from the intermediate housing 150.

[0093] In one example, the motor shaft 210 of the motor body 200 is close to the inner side of the first housing 130. For example, the distance between the motor shaft 210 and the inner side of the first housing 130 is 0 to 50 mm, so as to make the internal structure of the geared motor 10 compact and reduce the volume of the geared motor 10.

[0094] In one example, the distance between the motor shaft 210 and the inner side of the first housing 130 ranges from 0 to 10 mm, 10 to 20 mm, 20 to 30 mm, 30 to 40 mm, or 40 to 50 mm.

[0095] In this embodiment, by setting the intermediate transmission structure 300 in the first cavity 110, it is beneficial to make the overall layout of the geared motor 10 compact.

[0096] Please see Figures 9-12 , Figure 9 This is a top view of the geared motor 10 provided in an embodiment of this application. Figure 10 for Figure 9 Schematic diagram of the sectional view along the middle AA direction. Figure 11 This is a schematic diagram of the structure of the motor body 200 and the transmission mechanism provided in an embodiment of this application. Figure 12 This is another structural schematic diagram of the motor body 200 and the transmission mechanism provided in the embodiments of this application.

[0097] In one embodiment, the intermediate transmission structure 300 includes at least one transmission shaft 310 supported within the housing 100. A speed detection device 500 is located at one end of one of the transmission shafts 310 for detecting the speed of that transmission shaft 310. See also... Figure 10 The diagram illustrates that the speed detection device 500 is located at one end of a drive shaft 310, and the speed of the drive shaft 310 is used as the speed of the motor body 200 by detecting the speed of the drive shaft 310.

[0098] In this embodiment, the intermediate transmission structure 300 can be located within the first cavity 110 formed by the first housing 130 and the intermediate housing 150. In this case, please refer to... Figure 10 An clearance hole 154 is provided on the intermediate housing 150, which allows the speed detection device 500 to detect the speed of the corresponding drive shaft 310. In other embodiments, the speed detection device 500 may also be located in the first cavity 110 formed by the first housing 130 and the intermediate housing 150.

[0099] In this embodiment, when there is one drive shaft 310, the drive shaft 310 is connected to the motor shaft 210 and the output shaft 400; when there are two or more drive shafts 310, one drive shaft 310 is connected to the output shaft 400 of the motor body 200, and one drive shaft 310 is connected to the output shaft 400, and adjacent drive shafts 310 are connected to each other.

[0100] In one example, the motor shaft 210, drive shaft 310, and output shaft 400 are connected by a gear 320; in other examples, the motor shaft 210, drive shaft 310, and output shaft 400 are connected by a belt drive or a chain drive.

[0101] In this embodiment, by setting the speed detection device 500 at one end of one of the transmission shafts 310, it is convenient to arrange the position of the speed detection device 500 in the geared motor 10.

[0102] In one embodiment, the intermediate transmission structure 300 includes two or more transmission shafts 310, which are sequentially connected along the transmission direction of the intermediate transmission structure 300. The transmission shaft 310 closest to the output shaft 400 along the transmission direction of the intermediate transmission structure 300 is the final stage transmission shaft 312, and a speed detection device 500 is provided at one end of the final stage transmission shaft 312. Please refer to [link to relevant documentation]. Figure 10 This illustrates that the speed detection device 500 is located at one end of the final stage drive shaft 312.

[0103] In this embodiment, the transmission direction of the intermediate transmission structure 300 refers to the direction in which the rotational speed of the motor body 200 is transmitted to the output shaft 400 through the intermediate transmission structure 300. Each transmission shaft 310 is sequentially connected along the transmission direction of the intermediate transmission structure 300, meaning that the rotational speed of the motor body 200 can be sequentially transmitted to the output shaft 400 through each transmission shaft 310.

[0104] The motor body 200 rotates at a certain speed during operation. When the power from the motor body 200 is reduced and transmitted through the intermediate transmission structure 300, the output speed will differ somewhat from the speed theoretically calculated based on the reduction ratio. Therefore, when the speed of the transmission shaft 310 is detected by the speed detection device 500, it may slightly differ from the speed of the output shaft 400. In this embodiment, the speed detection device 500 is used to detect the speed of the final stage transmission shaft 312 to more accurately approximate the output speed of the output shaft 400.

[0105] It is worth noting that, as described above, the speed detection device 500 is located at one end of the final stage transmission shaft 312. In other alternative embodiments, when the intermediate transmission structure 300 includes two or more transmission shafts 310, the speed detection device 500 may also be located at one end of other transmission shafts 310 besides the final stage transmission shaft 312.

[0106] In one embodiment, please refer to Figure 10 The housing 100 has an upper cylindrical portion 155 and a lower cylindrical portion 133. A first bearing 101 is provided inside the lower cylindrical portion 133. One end of the final stage drive shaft 312 is inserted into the first bearing 101 on the lower cylindrical portion 133. A second bearing 102 is sleeved on the upper cylindrical portion 155 and is disposed between the upper cylindrical portion 155 and the gear 320 on the final stage drive shaft 312.

[0107] In one example, see Figure 10A lower cylindrical portion 133 extending toward the intermediate housing 150 is formed on the inner side of the first housing 130. One end of the final stage drive shaft 312 is inserted into the first bearing 101 on the lower cylindrical portion 133 to realize the rotational connection between the final stage drive shaft 312 and the first housing 130.

[0108] In one example, see Figure 10 The intermediate housing 150 has a lower cylindrical portion 133 extending toward the first housing 130 on the side facing the first housing 130. The interior of the lower cylindrical portion 133 is connected to the clearance hole 154. It is disposed between the upper cylindrical portion 155 and the gear 320 on the final stage drive shaft 312 through the second bearing 102 to realize the rotational connection between the final stage drive shaft 312 and the intermediate housing 150.

[0109] In one example, see Figure 10 The other end of the final drive shaft 312 is inserted into the upward cylindrical part 155 so as to connect to the speed detection device 500.

[0110] In one example, the other end of the final drive shaft 312 is inserted into the upper cylindrical portion 155 and extends through the clearance hole 154 into the second space 120 formed by the second housing 140 and the intermediate housing 150.

[0111] In one example, the gear 320 on the final stage drive shaft 312 is an integral structure with the final stage drive shaft 312.

[0112] In this embodiment, the final stage drive shaft 312 can be stably supported in the housing 100 by the first bearing 101 and the second bearing 102, so as to facilitate the speed detection device 500 to detect the speed of the final stage drive shaft 312; in addition, by setting the second bearing 102 between the upper cylindrical part 155 and the gear 320 on the final stage drive shaft 312, one end of the final stage drive shaft 312 can be connected to the speed detection device 500.

[0113] In one embodiment, the speed detection device 500 is a magnetic encoder; please refer to [link to relevant documentation]. Figure 10 The magnetic encoder includes a magnetic component 510 and a magnetic sensor 520. The magnetic component 510 is directly or indirectly fixed to one end of a drive shaft 310, and the magnetic sensor 520 faces the magnetic component 510.

[0114] The magnetic sensor 520 often uses a Hall element. In some examples, the Hall element is integrated on a Hall plate 530, which also includes other components such as signal processing circuitry to process and convert the signal detected by the Hall element. When the magnetic component 510 rotates with the drive shaft 310, the Hall element on the Hall plate 530 detects the change in the direction of the magnetic field, thereby obtaining information such as the speed of the drive shaft 310.

[0115] In one example, the magnetic component 510 is directly fixed to one end of the drive shaft 310; for example, the magnetic component 510 is embedded in one end of the drive shaft 310. In other examples, the magnetic component 510 may also be indirectly fixed to one end of the drive shaft 310, for example, see [reference needed]. Figure 10 A magnetic ring fixing bracket 800 is provided at one end of the drive shaft 310, and the magnetic component 510 is fixed on the magnetic ring fixing bracket 800.

[0116] In one example, the magnetic ring holder 800 is threaded or interference-fitted to the drive shaft 310.

[0117] In one example, the magnetic component 510 is embedded in the magnetic ring holder 800.

[0118] In one example, the magnetic ring holder 800 has a receiving groove on the side facing the Hall plate 530, and the magnetic element 510 is disposed in the receiving groove and attached to the magnetic ring holder 800.

[0119] In this embodiment of the application, by setting the speed detection device 500 as a magnetic encoder, the speed detection device 500 has the advantages of compact structure, excellent shock and vibration resistance, long service life and low maintenance cost.

[0120] In one embodiment, please refer to Figure 11 The intermediate transmission structure 300 includes multiple gears 320. Gears 320 are provided on the motor shaft 210, transmission shaft 310 and output shaft 400 of the motor body 200. The intermediate transmission structure 300 includes a primary transmission shaft 311, an intermediate transmission shaft 313 and a final transmission shaft 312. The gears 320 on the primary transmission shaft 311 mesh with the gears 320 on the motor shaft 210, and the gears 320 on the final transmission shaft 312 mesh with the gears 320 on the output shaft 400.

[0121] In one example, there is at least one intermediate drive shaft 313, for example, one, two, three or four intermediate drive shafts 313. The more intermediate drive shafts 313 there are, the more beneficial it is to reduce the output speed of the output shaft 400.

[0122] In one example, see Figure 11 There are three intermediate drive shafts 313, which can be referred to as the first intermediate drive shaft 3131, the second intermediate drive shaft 3132, and the third intermediate drive shaft 3133, respectively. Please refer to [link / reference]. Figure 11 The gear 320 on the primary drive shaft 311 meshes with the gear 320 on the motor shaft 210; please refer to Figure 11 The gear 320 on the first intermediate drive shaft 3131 meshes with the gear 320 on the first stage drive shaft 311; please refer to Figure 12The gear 320 on the first intermediate drive shaft 3131 meshes with the gear 320 on the second intermediate drive shaft 3132, the gear 320 on the second intermediate drive shaft 3132 meshes with the gear 320 on the third intermediate drive shaft 3133, the gear 320 on the third intermediate drive shaft 3133 meshes with the gear 320 on the final stage drive shaft 312, and the gear 320 on the final stage drive shaft 312 meshes with the gear 320 on the output shaft 400.

[0123] In this embodiment, the motor shaft 210, transmission shaft 310 and output shaft 400 are connected by gear 320 to facilitate precise transmission; the intermediate transmission structure 300, including a primary transmission shaft 311, an intermediate transmission shaft 313 and a final transmission shaft 312, helps to reduce the output speed of the output shaft 400.

[0124] In one embodiment, two gears 320 are provided on part or all of the intermediate drive shaft 313, and the two gears 320 are a first gear 321 and a second gear 322, respectively. The diameter of the first gear 321 is larger than the diameter of the second gear 322. The first gear 321 is used to mesh with the previous gear 320 in the transmission direction of the transmission mechanism, and the second gear 322 is used to mesh with the next gear 320 in the transmission direction of the transmission mechanism.

[0125] Please see Figure 12 The diagram illustrates that a first gear 321 and a second gear 322 are mounted on the intermediate drive shaft 313. The first gear 321 and the second gear 322 are arranged sequentially along the axial direction of the intermediate drive shaft 313. The first gear 321 and the second gear 322 on the same intermediate drive shaft 313 rotate at the same speed. The diameter of the first gear 321 is larger than the diameter of the second gear 322, so that the diameter of the gear 320 that meshes with the second gear 322 is larger than that of the second gear 322, thereby achieving the purpose of speed reduction.

[0126] In this embodiment of the application, when there is one intermediate transmission shaft 313, a first gear 321 and a second gear 322 are provided on the intermediate transmission shaft 313; when there are two or more intermediate transmission shafts 313, some intermediate transmission shafts 313 may be provided with two gears 320, or all intermediate transmission shafts 313 may be provided with two gears 320.

[0127] In one example, see Figure 11 A gear 320 is installed on the primary drive shaft 311. Please refer to [link / reference]. Figure 12Each of the first intermediate drive shaft 3131, the second intermediate drive shaft 3132, and the third intermediate drive shaft 3133 is equipped with two gears 320. The gear 320 on the first-stage drive shaft 311 meshes with the first gear 321 on the first intermediate drive shaft 3131, the second gear 322 on the first intermediate drive shaft 3131 meshes with the first gear 321 on the second intermediate drive shaft 3132, the second gear 322 on the second intermediate drive shaft 3132 meshes with the first gear 321 on the third intermediate drive shaft 3133, and the second gear 322 on the third intermediate drive shaft 3133 meshes with the gear 320 on the final-stage drive shaft 312.

[0128] Please see Figure 11 The diameter of gear 320 on the first-stage drive shaft 311 is larger than that of gear 320 on the motor shaft 210, and it can be used to achieve first-stage reduction. The diameter of the first gear 321 on the first intermediate drive shaft 3131 is larger than that of gear 320 on the first-stage drive shaft 311, and it can be used to achieve second-stage reduction. The diameter of the first gear 321 on the second intermediate drive shaft 3132 is larger than that of the second gear 322 on the first intermediate drive shaft 3131, and it can be used to achieve third-stage reduction. The diameter of the first gear 321 on the third intermediate drive shaft 3133 is larger than that of the second gear 322 on the second intermediate drive shaft 3132, and it can be used to achieve fourth-stage reduction. The diameter of gear 320 on the final-stage drive shaft 312 is larger than that of the second gear 322 on the third intermediate drive shaft 3133, and it can be used to achieve fifth-stage reduction. The diameter of gear 320 on the output shaft 400 is larger than that of gear 320 on the final-stage drive shaft 312, and it can be used to achieve sixth-stage reduction.

[0129] In one example, see Figure 11 The gears 320 on some intermediate drive shafts 313 are helical gears to facilitate transmission stability.

[0130] In one example, see Figure 11 This illustrates that the first gear 321 on the first intermediate transmission shaft 3131 is a helical gear 320, and the first gear 321 on the second intermediate transmission shaft 3132 is a helical gear 320.

[0131] In one example, the axial direction of each drive shaft 310 of the intermediate transmission structure 300 is along the height direction of the geared motor 10.

[0132] In one example, the first gear 321 and the second gear 322 on the intermediate drive shaft 313 are close to or in contact with each other to reduce the size of the geared motor 10.

[0133] In one example, the intermediate drive shaft 313 and the first gear 321 and the second gear 322 thereon are integrally formed to reduce the number of parts and facilitate the assembly of the geared motor 10.

[0134] In one example, the output shaft 400 and the gear 320 thereon are integrally formed to reduce the number of parts.

[0135] In this embodiment, a first gear 321 and a second gear 322 are provided on some or all of the intermediate transmission shafts 313, and the diameter of the first gear 321 is larger than the diameter of the second gear 322, so as to achieve deceleration while making the transmission mechanism compact.

[0136] Please see Figures 13-16 , Figure 13 This is a top view of the geared motor 10 provided in an embodiment of this application. Figure 14 for Figure 13 Schematic diagram of the BB-direction section. Figure 15 This is a schematic diagram of the structure of the first housing 130 provided in an embodiment of this application. Figure 16 This is a schematic diagram of the structure of the second housing 140 provided in an embodiment of this application.

[0137] In one embodiment, bearings are provided at both ends of the drive shaft 310, and the drive shaft 310 is supported inside the housing 100 by the bearings; or, please refer to Figure 14 The housing 100 has an upper convex ring 156 and a lower convex ring 134. The two ends of the drive shaft 310 are respectively inserted into the upper convex ring 156 and the lower convex ring 134. Wear-resistant rings 900 are respectively provided on the end faces of the upper convex ring 156 and the lower convex ring 134. The gear 320 on the drive shaft 310 is located between the two wear-resistant rings 900 and is limited between the two wear-resistant rings 900.

[0138] When there is only one drive shaft 310, the drive shaft 310 can be supported on the housing 100 by bearings, or... set up The upper convex ring 156 and the lower convex ring 134 are inserted into the two ends of the drive shaft 310 respectively, and the gear 320 on the drive shaft 310 is limited between the two wear-resistant rings 900.

[0139] When there are two or more drive shafts 310, each drive shaft 310 can be supported on the housing 100 by bearings, or each drive shaft 310 can have its two ends inserted with corresponding upper convex rings 156 and lower convex rings 134; or, some drive shafts 310 can be supported on the housing 100 by bearings, and the two ends of some drive shafts 310 can have corresponding upper convex rings 156 and lower convex rings 134 inserted.

[0140] In one example, when a first gear 321 and a second gear 322 are provided on the drive shaft 310, the first gear 321 and the second gear 322 are located between two wear rings 900.

[0141] In one example, please refer back to [link to previous page]. Figure 10 The final stage drive shaft 312 is supported on the housing 100 by bearings. It is worth noting that for the drive shaft 310 that cooperates with the speed detection device, the drive shaft 310 can be rotatably supported in the housing 100 by bearings. Supporting the drive shaft 310 by bearings facilitates the stable rotation of the drive shaft 310, which in turn facilitates the speed detection device to accurately detect the speed of the drive shaft 310.

[0142] In one example, see Figure 14 The diagram shows that the two ends of the intermediate drive shaft 313 are respectively inserted into the upper protruding ring 156 and the lower protruding ring 134. The intermediate drive shaft 313 can be rotatably supported on the housing 100 by inserting the upper protruding ring 156 and the lower protruding ring 134 into both ends.

[0143] In one example, see Figure 15 A first lower convex ring 1341, a second lower convex ring 1342, a third lower convex ring 1343, and a fourth lower convex ring 1344 are provided on the inner side of the first housing 130; please refer to Figure 16 A first upper convex ring 1561, a second upper convex ring 1562, a third upper convex ring 1563, and a fourth upper convex ring 1564 are provided on the side of the intermediate housing 150 facing the first housing 130. The two ends of the first primary drive shaft 311 are respectively inserted into the first lower convex ring 1341 and the first upper convex ring 1561. The two ends of the first intermediate drive shaft 3131 are respectively inserted into the second lower convex ring 1342 and the second upper convex ring 1562. The two ends of the second intermediate drive shaft 3132 are respectively inserted into the third lower convex ring 1343 and the third upper convex ring 1563. The two ends of the third intermediate drive shaft 3133 are respectively inserted into the fourth lower convex ring 1344 and the fourth upper convex ring 1564.

[0144] In one example, see Figure 15 The heights of the first lower convex ring 1341, the second lower convex ring 1342, the third lower convex ring 1343, and the fourth lower convex ring 1344 increase sequentially to match... Figure 12 The height shown is relative to the drive shaft 310 along the Z-axis. Similarly, the heights of the first upper convex ring 1561, the second upper convex ring 1562, the third upper convex ring 1563, and the fourth upper convex ring 1564 can be appropriately set to match the corresponding drive shaft 310.

[0145] In one example, see Figure 15A first baffle 135 is provided on the inner side of the first housing 130. The bending of the first baffle 135 is coordinated with the corresponding gear 320 to play a protective and positioning role.

[0146] In one example, see Figure 16 A second baffle 158 is provided on the side of the intermediate housing 150 facing the first housing 130. The bending of the second baffle 158 is coordinated with the corresponding gear 320 to play a protective and positioning role.

[0147] In this embodiment, when the transmission shaft 310 is supported inside the housing 100 by bearings, it facilitates the stable rotation of the transmission shaft 310 and the gear 320 thereon; when the transmission shaft 310 is provided with a wear-resistant ring 900 and the two ends of the transmission shaft 310 are respectively inserted with an upper convex ring 156 and a lower convex ring 134, it is possible to satisfy the requirement that the transmission shaft 310 is rotated and supported on the housing 100, while also facilitating the compact structure of the transmission mechanism.

[0148] Please see Figures 17-18 , Figure 17 This is a schematic diagram of the structure of the geared motor 10 provided in the embodiments of this application. Figure 18 This is a cross-sectional schematic diagram of the geared motor 10 provided in an embodiment of this application.

[0149] In one embodiment, please refer to Figure 18 The output shaft 400 is a hollow shaft, and its two ends are connected along the axial direction. A wiring hole 142 is provided on the second housing 140, which is connected to one end of the output shaft 400 to facilitate wiring through the output shaft 400.

[0150] In one embodiment, please refer to Figure 17 and Figure 18 A protective housing 160 is provided on the side of the second housing 140 away from the first housing 130. The output shaft 400 is connected to the space enclosed by the protective housing 160 and the second housing 140. One end of the space enclosed by the protective housing 160 and the second housing 140 is open 180. The wiring can be extended into the space enclosed by the protective housing 160 and the second housing 140 through the output shaft 400 and led out through the opening 180.

[0151] In this embodiment of the application, the protective housing 160 can be used to protect the leads passing through the output shaft 400.

[0152] This application also provides an electric device, which includes the geared motor 10 provided in any of the above embodiments. The specific structure of the geared motor 10 has been described above and will not be repeated here. Furthermore, the electric device can be a cleaning device (such as a cleaning robot) or other non-cleaning device (such as a lawnmower robot, pool robot, etc.).

[0153] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A geared motor, characterized in that, include: Casing (100); The motor body (200) is disposed within the housing (100); A transmission mechanism is disposed within the housing (100). The transmission mechanism includes an intermediate transmission structure (300) and an output shaft (400). The motor body (200) is connected to the output shaft (400) via the intermediate transmission structure (300). A speed detection device (500) is disposed inside the housing (100) and located on one side of the output shaft (400) in the radial direction.

2. The geared motor as described in claim 1, characterized in that, The housing (100) includes a first housing (130), a second housing (140), and an intermediate housing (150). The first housing (130) and the second housing (140) are disposed on both sides of the intermediate housing (150). The first housing (130) and the intermediate housing (150) form a first cavity (110), and the second housing (140) and the intermediate housing (150) form a second cavity (120). The two ends of the output shaft (400) extend into the first cavity (110) and the second cavity (120) respectively. The speed detection device (500) is located in the second cavity (120).

3. The geared motor as described in claim 2, characterized in that, The intermediate transmission structure (300) is located in the first cavity (110), and the intermediate housing (150) is provided with a clearance hole (154). The speed detection device (500) cooperates with the intermediate transmission structure (300) through the clearance hole (154).

4. The geared motor as described in any one of claims 1-3, characterized in that, The intermediate transmission structure (300) includes at least one transmission shaft (310) rotatably connected to the housing (100), and the speed detection device (500) is located at one end of one of the transmission shafts (310) for detecting the speed of the transmission shaft (310).

5. The geared motor as described in claim 4, characterized in that, The rotational speed detection device (500) is a magnetic encoder, which includes a magnetic component (510) and a magnetic sensor (520). The magnetic component (510) is directly or indirectly fixed to one end of one of the drive shafts (310), and the magnetic sensor (520) faces the magnetic component (510).

6. The geared motor as described in claim 4, characterized in that, The intermediate transmission structure (300) includes two or more transmission shafts (310), and each transmission shaft (310) is sequentially connected in the transmission direction of the intermediate transmission structure (300). The transmission shaft (310) closest to the output shaft (400) in the transmission direction of the intermediate transmission structure (300) is the final stage transmission shaft (312), and the speed detection device (500) is provided at one end of the final stage transmission shaft (312).

7. The geared motor as described in claim 4, characterized in that, The intermediate transmission structure (300) includes multiple gears (320), and the gears (320) are provided on the motor shaft (210) of the motor body (200), the transmission shaft (310) and the output shaft (400). The intermediate transmission structure (300) includes a primary transmission shaft (311), an intermediate transmission shaft (313) and a final stage transmission shaft (312). The gears (320) on the primary transmission shaft (311) mesh with the gears (320) on the motor shaft (210), and the gears (320) on the final stage transmission shaft (312) mesh with the gears (320) on the output shaft (400).

8. The geared motor as described in claim 7, characterized in that, The intermediate transmission shaft (313) is at least one, and two gears (320) are provided on some or all of the intermediate transmission shafts (313), and the two gears (320) are a first gear (321) and a second gear (322), respectively. The diameter of the first gear (321) is larger than the diameter of the second gear (322). The first gear (321) is used to mesh with the previous gear (320) in the direction of the intermediate transmission structure (300), and the second gear (322) is used to mesh with the next gear (320) in the transmission direction of the intermediate transmission structure (300).

9. The geared motor as described in claim 7, characterized in that, Bearings are provided at both ends of the drive shaft (310), and the drive shaft (310) is supported inside the housing (100) by the bearings; or, An upper convex ring (156) and a lower convex ring (134) are formed on the housing (100). The two ends of the transmission shaft (310) are respectively inserted into the upper convex ring (156) and the lower convex ring (134). Wear-resistant rings (900) are respectively provided on the end faces of the upper convex ring (156) and the lower convex ring (134). The gear (320) on the transmission shaft (310) is located between the two wear-resistant rings (900).

10. The geared motor as described in claim 7, characterized in that, The housing (100) has an upper cylindrical portion (155) and a lower cylindrical portion (133). A first bearing (101) is provided inside the lower cylindrical portion (133). One end of the final stage drive shaft (312) is inserted into the first bearing (101) on the lower cylindrical portion (133). A second bearing (102) is sleeved on the upper cylindrical portion (155) and the second bearing (102) is disposed between the upper cylindrical portion (155) and the gear (320) on the final stage drive shaft (312).

11. An electric device, characterized in that, Includes the geared motor (10) according to any one of claims 1-10.

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