A deceleration motor and a processing device thereof

Abstract

A kind of reduction motor, it is characterized in that: the lower end of reduction gearbox shell is formed with connecting part, and the outer circle of connecting part is formed with annular groove;The shell cover is arranged outside the motor shell, and the shell is fixed and sealed with the connecting part by forming annular boss in the opening end and recessing in the annular groove.The advantages are that a layer of shell is added to cover the motor shell, and the shell and the reduction gearbox shell are fixed and sealed by annular riveting, reliable waterproof sealing effect can be achieved without setting support lug through the shell, the required installation space is reduced, and the additional shell can reduce magnetic leakage, thereby further increasing the working torque, and the shell also has the effect of beauty and protection.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to a geared motor and its processing equipment. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It utilizes a rotating magnetic field generated by energized coils (stator windings) to act on the rotor, creating magnetoelectric torque. An electric motor mainly consists of a stator and a rotor. The direction of motion of a current-carrying conductor in a magnetic field depends on the direction of the current and the direction of the magnetic field lines. A geared motor, on the other hand, is a motor containing a reduction gear mechanism. It increases the output torque by increasing the transmission ratio to reduce the speed. A windshield wiper motor is a type of geared motor, consisting of a motor section and a reduction gearbox.

[0003] In the mainstream structure of automotive wiper motors, based on the assembly structure between the motor and the gearbox, they can be roughly divided into three types: 1. Flange-type structure: This structure features at least two flanged lugs punched into the motor housing, with holes punched at the lugs. Corresponding holes are drilled and tapped in the gearbox, and the components are connected using screws. This structure achieves sealing and rapid assembly by adding other accessories, but it also increases the required space due to the extended lugs, thus increasing the manufacturing process and cost of the housing.

[0004] II. Radial punched structure: This structure features radially punched holes (usually two holes) on the motor housing. A baffle plate is then added as needed. The holes in the baffle plate are tapped, and the three components are secured together with bolts. This structure eliminates the need for external mounting lugs, but requires additional baffle plates and cannot achieve a waterproof seal.

[0005] 3. Axial punched structure: This structure features at least two holes punched at the bottom of the motor housing, with corresponding holes drilled and tapped in the gearbox. Long bolts are then used to directly secure the two components. This structure eliminates the need for external mounting lugs, but it is difficult to achieve a waterproof seal. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention provides a geared motor and its processing equipment.

[0007] The technical solution adopted in this invention is as follows: A geared motor includes a motor part, a gearbox part, and a housing; the motor part includes a motor housing and a stator assembly and a rotor assembly installed inside the motor housing; the gearbox part includes a gearbox housing and a speed reduction transmission assembly installed inside the gearbox housing, and the rotor assembly and the speed reduction transmission assembly are connected in a driving manner; a connecting part is formed at the lower end of the gearbox housing, and an annular groove is formed on the outer ring of the connecting part; the housing covers the motor housing, and the housing forms a fixed and sealed connection with the connecting part by forming an annular boss that is recessed inward in the annular groove at its open end.

[0008] A sealing ring is formed inside the annular groove.

[0009] The inner ring of the connecting part has at least two circumferentially distributed connecting bosses, and screw holes are formed on the connecting bosses; the bottom of the motor housing has connecting holes corresponding to the screw holes, and the motor housing and the gearbox housing are fixedly connected by long bolts.

[0010] The motor housing has a positioning notch at the open end, and a positioning step is formed at the lower end of the connecting part. A positioning boss that matches the positioning notch is formed on the outer ring of the positioning step. The positioning step is inserted into the motor housing and is positioned and engaged with the positioning notch of the motor housing through the positioning boss.

[0011] The outer casing and the motor housing can also be a transition fit.

[0012] The motor housing has an opening at the bottom, and a first bearing is fixedly installed at the bottom of the housing. The rotor assembly is connected to a rotating shaft, one end of which passes downward through the motor housing and connects to the first bearing, while the other end is engaged with the speed reduction transmission assembly.

[0013] A processing device for rolling and finishing the aforementioned geared motor includes a base, a rotary clamping device, and a rolling device. The rotary clamping device includes a first clamping mechanism and a second clamping mechanism correspondingly arranged along the X-axis. The first clamping mechanism includes a first support mounted on a base, on which a rotary chuck is rotatably mounted. The rotary chuck is connected to a rotary drive assembly, which can drive the rotary chuck to rotate along the X-axis. The second clamping mechanism includes a second support mounted on a base, on which a push rod is provided. The push rod can rotate and slide along the X-axis on the second support. The second support is also provided with a power source that can push the push rod to slide along the X-direction. The rolling device includes a third support mounted on a machine base, a tool holder slidably mounted on the third support, the tool holder being connected to a linear drive assembly, the linear drive assembly being able to drive the tool holder to slide linearly along the Y-axis, and a rolling cutter being rotatably mounted at the end of the tool holder.

[0014] The operating steps are as follows: 1) After the outer casing is placed over the motor housing, the outer casing is placed into the rotating clamp and the control switch is turned on to fix it in place. Then the push rod pushes against the end of the gearbox housing. 2) Start the rotary drive assembly, which drives the rotary chuck to rotate, and the rotary chuck drives the geared motor to rotate; 3) Subsequently, the linear drive assembly operates, pushing the tool holder to slide and advance the tool. The rolling tool presses against the outer ring of the housing and rolls at least one revolution. The housing is deformed by force, forming an annular boss that is embedded in the annular groove of the gearbox housing. 4) The linear drive component pushes the tool holder to reset and retract the tool, then the rotary drive component motor is turned off to stop rotation, and then the rotary chuck controller is turned off to remove the geared motor.

[0015] The top rod is provided with a second bearing between it and the second support, the rolling cutter has connecting shafts protruding from both ends, and a third bearing is provided between the connecting shafts and the cutter holder.

[0016] A cylindrical boss is formed at the center of the upper end of the gearbox housing of the geared motor, and a circular groove is formed at the end of the push rod. When the rotating clamping device clamps the geared motor, the circular groove of the push rod is positioned and engaged with the cylindrical boss of the gearbox housing.

[0017] The beneficial effects of the present invention are as follows: by adopting the above solution, an outer shell covering the motor housing is added, and the outer shell and the gearbox housing are fixed and sealed by annular riveting. The outer shell can achieve a reliable waterproof sealing effect without the need for lugs, reducing the required installation space. At the same time, adding an outer shell can reduce magnetic leakage, thereby further increasing the working torque. Moreover, the outer shell also has the functions of aesthetics and protection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the wiper motor in Embodiment 1 of the present invention.

[0019] Figure 2 This is a cross-sectional structural diagram of the wiper motor according to Embodiment 1 of the present invention.

[0020] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0021] Figure 4 This is a schematic diagram of the structure of the gearbox housing according to Embodiment 1 of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the motor housing and stator assembly according to an embodiment of the present invention.

[0023] Figure 6 This is a cross-sectional structural diagram of the wiper motor in Embodiment 2 of the present invention.

[0024] Figure 7 for Figure 6 Enlarged diagram of point B in the middle.

[0025] Figure 8 This is a schematic diagram of the processing equipment in Embodiment 3 of the present invention.

[0026] Figure 9 This is a top view of the processing equipment in Embodiment 3 of the present invention.

[0027] Figure 10 This is a schematic diagram of the structure of the second clamping mechanism in Embodiment 3 of the present invention.

[0028] Figure 11 This is a schematic diagram of the rolling device in Embodiment 3 of the present invention. Detailed Implementation

[0029] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] Example 1 like Figure 1-5 As shown, a wiper motor includes a motor part, a gearbox part, and a housing 5.

[0031] The motor part includes a motor housing 1 and a stator assembly 2 and a rotor assembly 3 installed inside the motor housing 1. The gearbox part includes a gearbox housing 4 and a speed reduction transmission assembly installed inside the gearbox housing 4. The motor part is correspondingly located below the gearbox part, and the rotor assembly 3 is connected to the speed reduction transmission assembly in a transmission connection.

[0032] The stator assembly 2 includes two magnetic tiles 21 and two magnetic tile clamps 22. The magnetic tile clamps 22 are fixedly installed on the inner wall of the motor housing 1. The magnetic tiles 21 are clamped and fixed by the magnetic tile clamps 22 and are set close to the inner wall of the motor housing 1. The rotor assembly 3 is set at the center of the stator assembly 2. Under electromagnetic action, the rotor assembly 3 can rotate relative to the stator assembly 2.

[0033] The rotor assembly 3 is fixedly connected to a rotating shaft 9 at its center. The lower end of the rotating shaft 9 is connected to a first bearing 8 installed at the bottom of the motor housing 1, and the upper end extends into the gearbox housing 4 and forms threaded teeth that can cooperate with the speed reduction transmission assembly. The rotor assembly 3 and the speed reduction transmission assembly achieve transmission cooperation through the rotating shaft 9.

[0034] The lower end of the gearbox housing 4 has a connecting part 41, and an annular groove 42 is formed on the outer ring of the connecting part 41. A sealing ring 6 is formed in the annular groove 42. The outer shell 5 covers the motor housing 1, and the outer shell 5 can be formed with an inwardly recessed annular boss 51 at its opening end by rolling using a special processing equipment. The annular boss 51 is embedded in the annular groove 42 and squeezes the sealing ring 6, causing it to be plastically deformed and tightly attached between the outer shell and the gearbox housing. This not only realizes the connection between the outer shell and the gearbox housing, but also achieves a reliable waterproof sealing effect.

[0035] Of course, the number of annular grooves is not limited to one; two or even more can be set. Combined with multiple sealing rings, this not only makes the connection between the outer shell and the gearbox housing more reliable, but also further ensures the waterproof sealing effect.

[0036] In addition, the inner ring of the connecting part 41 has a plurality of circumferentially distributed connecting bosses 43. The number of connecting bosses 43 is usually two. Screw holes 44 are formed on the connecting bosses 43. The bottom of the motor housing 1 has a connecting hole 11 corresponding to the screw hole 44. When connecting the motor housing 1 and the gearbox housing 4, it is only necessary to pass the long bolt 7 from bottom to top through the connecting hole 11 and tighten it with the screw hole 44.

[0037] Furthermore, the motor housing 1 has a positioning notch 12 at its open end, and a positioning step 45 is formed at the lower end of the connecting part 41. A positioning boss 46 that matches the positioning notch 12 is formed on the outer ring of the positioning step 45. When connecting the motor housing 1 and the gearbox housing 4, the positioning step 45 is inserted into the motor housing 1, and the positioning boss 46 is positioned and engaged with the positioning notch 12 of the motor housing 1, so that the motor housing 1 and the gearbox housing 4 can be accurately positioned, which greatly facilitates the assembly and positioning operation.

[0038] When assembling the wiper motor, first put on the sealing ring, then assemble the motor part and the gearbox part into one piece, and finally put on the outer shell and put it into a special processing equipment. The outer shell is riveted to the gearbox housing by rolling riveting. The outer shell and the gearbox housing form a soft plastic metal fit through the sealing ring, which has an excellent sealing effect. Moreover, the material requirements and processing precision requirements of the outer shell and the gearbox housing are not high, which makes it more convenient for production and processing.

[0039] By adopting the above solution, an outer shell is added to cover the motor housing, and the outer shell is fixed and sealed to the gearbox housing by annular riveting. The outer shell can achieve a reliable waterproof sealing effect without the need for lugs, reducing the required installation space. At the same time, adding an outer shell can reduce magnetic leakage, thereby further increasing the working torque. Moreover, the outer shell also has the functions of aesthetics and protection.

[0040] Example 2 like Figure 6-7 As shown, a wiper motor includes a motor part, a gearbox part, and a housing 5.

[0041] The motor part includes a motor housing 1 and a stator assembly and a rotor assembly 3 installed inside the motor housing 1. The gearbox part includes a gearbox housing 4 and a speed reduction transmission assembly installed inside the gearbox housing 4. The motor part is correspondingly located below the gearbox part, and the rotor assembly 3 is connected to the speed reduction transmission assembly in a transmission connection.

[0042] The lower end of the gearbox housing 4 has a connecting part 41, and the outer ring of the connecting part 41 also has an annular groove 42. The outer shell 5 covers the motor housing 1, and the outer shell 5 can be formed with an inwardly recessed annular boss 51 at its opening end by rolling through a special processing equipment. The annular boss 51 is embedded in the annular groove 42, and the annular boss 51 can fit tightly with the annular groove 42, thereby achieving a reliable fixing and sealing effect.

[0043] Of course, the number of annular grooves is not limited to one; two or even more can be set, which not only makes the connection between the outer shell and the gearbox housing more reliable, but also further ensures the waterproof sealing effect.

[0044] The outer shell 5 and the motor housing 1 are fitted together to form an integral structure with the motor part and the outer shell 5, which facilitates assembly.

[0045] Furthermore, the motor housing 1 has an opening at the lower end, the outer shell 5 has a first bearing 8 fixedly installed at the bottom, the rotor assembly is connected to the rotating shaft 9, one end of the rotating shaft 9 passes downward through the motor housing 1 and is connected to the first bearing 8, and the upper end extends into the gearbox housing 4 and forms threaded teeth that can cooperate with the speed reduction transmission assembly. The rotor assembly and the speed reduction transmission assembly achieve transmission cooperation through the rotating shaft 9.

[0046] Furthermore, the motor housing has a positioning notch at the open end, and a positioning step is formed at the lower end of the connecting part. A positioning boss 46 that matches the positioning notch is formed on the outer ring of the positioning step. When connecting the motor housing 1 and the gearbox housing 4, the positioning step is inserted into the motor housing and is positioned and engaged with the positioning notch of the motor housing through the positioning boss, so that the motor housing and the gearbox housing can be accurately positioned, which greatly facilitates the assembly and positioning operation.

[0047] When assembling the aforementioned wiper motor, the first bearing is first embedded into the bottom of the housing, and then the motor part is embedded into the housing, so that the motor part and the housing form an integral structure. Finally, the housing is connected to the gearbox part and placed in a special processing equipment. The housing is riveted to the gearbox housing by rolling riveting. The housing and the gearbox housing do not form a hard metal fit through a sealing ring. Compared with the soft plastic metal fit in Embodiment 1, the structure is more stable and reliable. However, it has higher requirements for the materials and processing precision of the housing and the gearbox housing. Only by ensuring a tight fit between the two can a reliable sealing effect be achieved.

[0048] By adopting the above solution, an outer shell is added to cover the motor housing, and the outer shell is fixed and sealed to the gearbox housing by annular riveting. The outer shell can achieve a reliable waterproof sealing effect without the need for lugs, reducing the required installation space. At the same time, adding an outer shell can reduce magnetic leakage, thereby further increasing the working torque. Moreover, the outer shell also has the functions of aesthetics and protection.

[0049] Example 3 like Figure 8-11 As shown, a processing device can be used for the roll forming of the wiper motor described in Embodiment 1 or Embodiment 2, which includes a base, a rotating clamping device, and a roll forming device.

[0050] The rotary clamping device includes a first clamping mechanism and a second clamping mechanism correspondingly arranged along the X-axis. The first clamping mechanism includes a first support 101 mounted on a base, on which a rotary chuck 102 is rotatably mounted. The rotary chuck 102 is a pneumatic three-jaw chuck, and is connected to a rotary drive assembly 103. The rotary drive assembly 103 uses a motor and a conveyor belt to drive the rotary chuck 102 to rotate along the X-axis. The second clamping mechanism includes a second support 104 mounted on a base, on which a push rod 105 is provided. The push rod 105 can rotate and slide along the X-axis on the second support 104. The second support 104 is also provided with a power source 106 that can push the push rod 105 to slide along the X-direction. This power source 106 is typically a cylinder. A second bearing 111 is provided between the push rod 105 and the second support 104.

[0051] In addition, a cylindrical boss 47 is formed at the center of the upper end of the gearbox housing 4 of the geared motor, and a circular groove 1051 is formed at the end of the push rod 105. When the rotating clamping device clamps the geared motor, the circular groove 1051 of the push rod 105 is positioned and engaged with the cylindrical boss 47 of the gearbox housing 4.

[0052] The rolling device includes a third support 107 mounted on a machine base. A cutter holder 108 is slidably mounted on the third support 107. The cutter holder 108 is connected to a linear drive assembly 109, which is typically also cylinder-driven, and can drive the cutter holder 108 to slide linearly along the Y-axis. A rolling cutter 110 is rotatably mounted at the end of the cutter holder 108. Connecting shafts protrude from both ends of the rolling cutter 110, and a third bearing 112 is provided between the connecting shafts and the cutter holder 108.

[0053] When using the above-mentioned processing equipment for annular rolling riveting, the operating steps are as follows: 1) After the outer casing is placed over the motor housing, the outer casing is placed into the rotating clamp and the control switch is turned on to fix it in place. Then the push rod pushes against the end of the gearbox housing. 2) Start the rotary drive assembly, which drives the rotary chuck to rotate, and the rotary chuck drives the geared motor to rotate; 3) Subsequently, the linear drive assembly operates, pushing the tool holder to slide and advance the tool. The rolling tool presses against the outer ring of the housing and rolls at least one revolution. The housing is deformed by force, forming an annular boss that is embedded in the annular groove of the gearbox housing. 4) The linear drive component pushes the tool holder to reset and retract the tool, then the rotary drive component motor is turned off to stop rotation, and then the rotary chuck controller is turned off to remove the geared motor.

[0054] In the description of this invention, it should be noted that the above embodiments are all illustrated using a wiper motor as an example, but in reality, they are not limited to wiper motors and can also be applied to other types of geared motors.

[0055] Please note to all technical personnel: Although the present invention has been described according to the specific embodiments above, the inventive concept of the present invention is not limited to this invention. Any modifications that utilize the inventive concept will be included within the scope of protection of this patent.

Claims

1. A geared motor, comprising a motor portion and a gearbox portion; the motor portion comprising a motor housing (1) and a stator assembly (2) and a rotor assembly (3) installed within the motor housing (1); the gearbox portion comprising a gearbox housing (4) and a speed reduction transmission assembly installed within the gearbox housing (4), wherein the rotor assembly (3) is drive-connected to the speed reduction transmission assembly; Its features are: It also includes a housing (5), and a connecting part (41) is formed at the lower end of the gearbox housing (4). An annular groove (42) is formed on the outer ring of the connecting part (41). The housing (5) covers the motor housing (1), and the housing (5) forms a fixed and sealed connection with the connecting part (41) by forming an annular boss (51) that is recessed inward in the annular groove (42) at its open end. A sealing ring (6) is formed inside the annular groove (42); The inner ring of the connecting part (41) has at least two circumferentially distributed connecting bosses (43), and screw holes (44) are formed on the connecting bosses (43); the bottom of the motor housing (1) has a connecting hole (11) corresponding to the screw hole (44), and the motor housing (1) and the gearbox housing (4) are fixedly connected by long bolts (7). The motor housing (1) has a positioning notch (12) at its open end, and a positioning step (45) is formed at the lower end of the connecting part (41). A positioning boss (46) that matches the positioning notch (12) is formed on the outer ring of the positioning step (45). The positioning step (45) is inserted into the motor housing (1) and is positioned and engaged with the positioning notch (12) of the motor housing (1) by the positioning boss (46). The outer shell (5) and the motor housing (1) are transitionally fitted. An inwardly recessed annular boss (51) is formed at the opening end of the outer shell (5) by rolling. The annular boss (51) is embedded in the annular groove (42) and the sealing ring (6) is squeezed to make it plastically deformed and tightly attached between the outer shell (5) and the gearbox housing (4). The outer shell (5) and the gearbox housing (4) are connected by the sealing ring (6) to form a soft plastic metal fit.

2. The geared motor according to claim 1, characterized in that: The motor housing (1) has an opening at the lower end, and the first bearing (8) is fixedly installed at the bottom of the outer shell (5). The rotor assembly (3) is connected to the rotating shaft (9). One end of the rotating shaft (9) passes downward through the motor housing (1) and is connected to the first bearing (8), while the other end is connected to the speed reduction transmission assembly.

3. A processing device for rolling and finishing the geared motor as described in claim 1, characterized in that, Includes a base, a rotary clamping device, and a rolling device; The rotary clamping device includes a first clamping mechanism and a second clamping mechanism correspondingly arranged along the X-axis. The first clamping mechanism includes a first support (101) mounted on the base. A rotary chuck (102) is rotatably mounted on the first support (101). The rotary chuck (102) is connected to a rotary drive assembly (103). The rotary drive assembly (103) can drive the rotary chuck (102) to rotate along the X-axis. The second clamping mechanism includes a second support (104) mounted on the base. A push rod (105) is provided on the second support (104). The push rod (105) can rotate and slide along the X-axis on the second support (104). The second support (104) is also provided with a power source (106) that can push the push rod (105) to slide along the X-direction. The rolling device includes a third support (107) mounted on a machine base. A cutter holder (108) is slidably mounted on the third support (107). The cutter holder (108) is connected to a linear drive assembly (109). The linear drive assembly (109) can drive the cutter holder (108) to slide linearly along the Y-axis. A rolling cutter (110) is rotatably mounted at the end of the cutter holder (108).

4. The processing equipment according to claim 3, characterized in that: A second bearing (111) is provided between the top rod (105) and the second support (104), and a connecting shaft protrudes from both ends of the rolling cutter (110). A third bearing (112) is provided between the connecting shaft and the cutter holder (108).

5. The processing equipment according to claim 3, characterized in that: A cylindrical boss (47) is formed at the center of the upper end of the gearbox housing (4) of the geared motor, and a circular groove (1051) is formed at the end of the push rod (105). When the rotating clamping device clamps the geared motor, the circular groove (1051) of the push rod (105) and the cylindrical boss (47) of the gearbox housing (4) are positioned and engaged.

6. An operation method based on the processing equipment according to claim 3, characterized in that: The operating steps are as follows: 1) After the outer casing is placed over the motor housing, the outer casing is placed into the rotating clamp and fixed in place. Then the push rod pushes against the end of the gearbox housing. 2) Start the rotary drive assembly, which drives the rotary chuck to rotate, and the rotary chuck drives the geared motor to rotate; 3) Start the linear drive assembly. The linear drive assembly pushes the tool holder to slide and feed the tool. The rolling tool presses against the outer ring of the housing and rolls at least one revolution. The housing is deformed by force, forming an annular boss that is embedded in the annular groove of the gearbox housing. 4) The linear drive assembly pushes the tool holder to reset and retract the tool, then the rotary drive assembly stops, and the rotary chuck is opened to remove the geared motor.

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