A planetary gear type brush dc motor

Abstract

This utility model discloses a planetary gear type brushed DC motor, which aims to solve the technical problem of low ease of disassembly, assembly, and maintenance of existing planetary gear reducers. The motor includes a brushed DC motor body, a housing movably mounted on the front of the brushed DC motor body, a rotating shaft fixedly connected to the drive end of the brushed DC motor body inside the housing, a planetary gear set mounted on the outside of the rotating shaft inside the housing, mounting brackets fixedly connected to the upper and lower sides of the brushed DC motor body, a locking mechanism mounted at the front end of one set of mounting brackets, a cover fixedly mounted on the front of the housing, and the left and right ends of the cover fixedly connected to the housing by fixing pins; the locking mechanism includes two sets of locking pins symmetrically slidably connected inside the mounting brackets. This utility model greatly improves the ease of disassembly, assembly, and maintenance through its design.

Description

Technical Field

[0001] This utility model belongs to the field of DC motor technology, specifically relating to a planetary gear brushed DC motor. Background Technology

[0002] A brushed DC motor is a type of DC motor. The stator of a brushed DC motor has fixed main magnetic poles and brushes, while the rotor has armature windings and a commutator. Electrical energy from a DC power supply enters the armature windings through the brushes and commutator, generating armature current. The magnetic field generated by the armature current interacts with the main magnetic field to produce electromagnetic torque, causing the motor to rotate and drive the load. Brushed DC motors have advantages such as simple structure, smooth operation, good starting and braking effects, and high control precision, and are widely used in various fields. In traditional brushed DC motors, the motor and reducer are manufactured separately and then assembled as needed. In contrast, a planetary gear brushed DC motor integrates the DC motor and planetary gear reducer into a single unit.

[0003] A search revealed that CN209119976U discloses a planetary gear reducer motor, comprising a housing, a cover, bolts, a brake, a rotating shaft, a fixed angle iron, a groove, a bearing, a large gear, gear A, gear B, rotating shaft A, and rotating shaft B. The cover is fixed to the left side of the housing by bolts. A groove is provided on the inner side of the cover and the right end of the housing cavity, and the bearing is embedded in the groove. A large gear is provided on the rotating shaft, with the right end of the rotating shaft passing through the housing cavity and the left end passing through the cover and passing through the brake located at the center of the left side of the cover. Gear A is provided on rotating shaft A, and gear B is provided on rotating shaft B. The two ends of rotating shaft A and rotating shaft B are respectively embedded in the bearings on the inner side of the cover and the right end of the housing cavity, thereby achieving fixation and rotation. The fixed angle iron is provided on both sides of the housing. The design is reasonable, safe, and reliable, and is suitable for widespread use.

[0004] The cover of the aforementioned planetary gear reducer motor is disassembled and inspected using bolts. However, both installation and disassembly require additional tools. Tools are needed to install or remove the bolts one by one, which involves many steps and results in low convenience for disassembly and maintenance. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a planetary gear type brushed DC motor, which aims to solve the technical problem of low convenience of disassembly, assembly and maintenance of planetary gear reducers under the existing technology.

[0007] (2) Technical solution

[0008] To solve the above-mentioned technical problems, this utility model provides a planetary gear type brushed DC motor. The motor has a brushed DC motor body, a housing is movably mounted on the front of the brushed DC motor body, a rotating shaft is fixedly connected to the drive end of the brushed DC motor body and located inside the housing, a planetary gear set is installed on the outside of the rotating shaft and located inside the housing, mounting brackets are fixedly connected to the upper and lower sides of the brushed DC motor body, a locking mechanism is installed at the front end of one set of mounting brackets, and a cover is fixedly mounted on the front of the housing. The left and right ends of the cover are fixedly connected to the housing through fixing pins.

[0009] The locking mechanism includes two sets of locking pins symmetrically slidably connected inside the mounting frame. Locking holes are provided inside the housing at positions corresponding to the locking pins. An operating handle is fixedly connected to one end of each set of locking pins. A return spring is movably installed inside the mounting frame between the two sets of operating handles.

[0010] Both ends of the cover are fixedly connected to connectors. The outer side of the casing and the upper and lower ends of the connectors are fixedly connected to mating heads. The fixing pin passes through the inside of the connector and the mating head, and the top of the fixing pin is threaded with a fixing sleeve.

[0011] When using the motor with this technical solution, during the assembly process between the housing and the brushed DC motor body, simply insert the mounting bracket into the housing. The rear end of the housing has an insertion opening. When the locking pin contacts the insertion slot, it is squeezed into the housing until both sets of mounting brackets are inserted into the housing. Under the return of the return spring, the locking pin is pushed into the locking hole inside the housing, thus enabling quick assembly between the housing and the brushed DC motor body. When disassembling and repairing the housing, simply pinch the two sets of operating handles to retract the locking pin into the mounting bracket, thereby releasing the fixation between the housing and the mounting bracket. Then, pull out the housing to complete the disassembly. When assembling the cover and the housing, simply align the connectors on both ends of the cover with the inside of the connector and insert them. Then, insert the fixing pin into the connector and connector, and finally screw on the fixing sleeve to complete the assembly.

[0012] Preferably, a baffle is fixedly connected to the outside of the mounting bracket and between the two sets of operating handles, and the interior of both sets of operating handles is slidably connected to the baffle through a through groove.

[0013] Furthermore, the interior of the casing is connected to the mounting bracket via a mounting slot, and rubber sealing gaskets are embedded between the left and right sides of the mounting bracket and the mounting slot.

[0014] Furthermore, a rubber sealing ring is embedded on the front of the housing, and an embedded groove is provided on the front of both the housing and the mounting bracket at the position corresponding to the rubber sealing ring.

[0015] Furthermore, a mounting sleeve is fixedly connected to the front of the housing, and the front end of the rotating shaft is rotatably connected to the mounting sleeve via a bearing.

[0016] Furthermore, an elastic retaining ring is snapped onto the outer side of the shaft and the outer side of the bearing, and a groove is provided on the outer side of the shaft at the position corresponding to the elastic retaining ring.

[0017] Furthermore, the planetary gear set includes a gear sleeve fixedly installed inside the housing, a planet carrier rotatably connected to the outer side of the rotating shaft, multiple sets of planetary gears rotatably connected to the inner side of the planet carrier, and all sets of planetary gears meshing with the gear sleeve. The outer side of the rotating shaft meshes with multiple sets of planetary gears through a sun gear.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This utility model's motor, through the cooperative design of the housing, mounting bracket, locking mechanism, cover, and fixing pin, allows for quick assembly of the housing and brushed DC motor body. The mounting bracket is inserted into the housing, with an insertion opening at the rear. When the locking pin contacts the insertion slot, it is compressed into the mounting bracket until both sets of mounting brackets are inserted into the housing. The return spring then pushes the locking pin into the locking hole inside the housing, enabling rapid assembly. For subsequent disassembly and maintenance, simply pinch the two operating handles to retract the locking pin into the mounting bracket, releasing the housing from its fixation. The housing can then be removed. When assembling the cover and housing, simply align the connectors on both ends of the cover with the inner sides of the connectors and insert them. Then, insert the fixing pin into the connectors and connectors, and finally screw on the fixing sleeve to complete the assembly. This significantly improves the convenience of disassembly and maintenance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the casing of this utility model;

[0023] Figure 3 This is a schematic diagram of the planetary gear set and mounting frame structure of this utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0025] The markings in the attached diagram are as follows: 1. Brushed DC motor body; 2. Housing; 201. Mounting slot; 202. Rubber sealing gasket; 203. Rubber sealing ring; 204. Embedded groove; 3. Shaft; 301. Mounting sleeve; 302. Bearing; 303. Elastic retaining ring; 304. Slot; 4. Planetary gear set; 401. Gear sleeve; 402. Planetary carrier; 403. Planetary gear; 404. Sun gear; 5. Mounting bracket; 6. Locking mechanism; 601. Locking pin; 602. Operating handle; 603. Return spring; 604. Baffle; 605. Through groove; 7. Cover; 8. Fixed pin; 801. Connector; 802. Butt joint; 803. Fixed sleeve. Detailed Implementation

[0026] This specific embodiment is a planetary gear type brushed DC motor, and its structural schematic diagram is shown below. Figure 1-4 As shown, the motor includes a brushed DC motor body 1, a housing 2 is movably mounted on the front of the brushed DC motor body 1, a rotating shaft 3 is fixedly connected to the drive end of the brushed DC motor body 1 and located inside the housing 2, a planetary gear set 4 is installed on the outside of the rotating shaft 3 and located inside the housing 2, mounting brackets 5 are fixedly connected to the upper and lower sides of the brushed DC motor body 1, a locking mechanism 6 is installed at the front end of one set of mounting brackets 5, and a cover 7 is fixedly mounted on the front of the housing 2, with the left and right ends of the cover 7 being fixedly connected to the housing 2 by fixing pins 8.

[0027] First, in this embodiment, the specific structure of the locking mechanism 6 is as follows:

[0028] The locking mechanism 6 includes two sets of locking pins 601 symmetrically slidably connected inside the mounting bracket 5. Locking insertion holes are provided inside the housing 2 at positions corresponding to the locking pins 601. Operating handles 602 are fixedly connected to opposite ends of both sets of locking pins 601. A return spring 603 is movably installed inside the mounting bracket 5 between the two sets of operating handles 602. A baffle 604 is fixedly connected to the outside of the mounting bracket 5 between the two sets of operating handles 602. The interiors of both sets of operating handles 602 are slidably connected to the baffle 604 via through slots 605. When assembling the housing 2 and the brushed DC motor body 1, simply insert the mounting bracket 5 into the housing 2. An insertion opening is provided at the rear end of the housing 2. When the locking pins 601 contact the insertion opening... After entering the bayonet, it is squeezed and compressed into the interior of the mounting bracket 5 until both sets of mounting brackets 5 are inserted into the interior of the housing 2. Under the rebound of the return spring 603, the locking pin 601 is pushed into the locking hole inside the housing 2, thereby enabling quick assembly between the housing 2 and the brushed DC motor body 1. When disassembling and repairing the housing 2 later, it is only necessary to pinch the two sets of operating handles 602 to retract the locking pin 601 into the interior of the mounting bracket 5, thereby releasing the fixation between the housing 2 and the mounting bracket 5. Then, the housing 2 can be pulled out to complete the disassembly, which greatly improves the convenience of disassembly and repair. At the same time, the baffle 604 protects the return spring 603, and the operating handle 602 can slide normally inside the through groove 605.

[0029] Furthermore, connectors 801 are fixedly connected to both the left and right ends of the cover 7, and connectors 802 are fixedly connected to both the upper and lower ends of the connectors 801 on the outer side of the housing 2. A fixing pin 8 passes through the inside of the connectors 801 and the connectors 802, and a fixing sleeve 803 is threaded to the top of the fixing pin 8. When assembling the cover 7 and the housing 2, simply align the connectors 801 at the left and right ends of the cover 7 with the inside of the connectors 802 and snap them in. Then insert the fixing pin 8 into the inside of the connectors 801 and the connectors 802, and finally screw on the fixing sleeve 803 to complete the assembly and fixation, which further improves the convenience of disassembly, assembly and maintenance.

[0030] Furthermore, the interior of the housing 2 is connected to the mounting bracket 5 via the mounting slot 201. Rubber sealing gaskets 202 are embedded between the left and right sides of the mounting bracket 5 and the mounting slot 201. When the mounting bracket 5 is inserted into the interior of the housing 2, it can be quickly assembled by aligning it with the mounting slot 201. At the same time, the embedded rubber sealing gaskets 202 can also ensure the sealing after assembly.

[0031] Then, a rubber sealing ring 203 is embedded on the front of the housing 2. An inner groove 204 is opened on the front of the housing 2 and the mounting bracket 5 at the position corresponding to the rubber sealing ring 203. After assembling the housing 2 with the brushed DC motor body 1, the rubber sealing ring 203 is installed into the inner groove 204. Then, the cover 7 and the housing 2 are assembled. The rubber sealing ring 203 is used to ensure the sealing after assembly.

[0032] Furthermore, a mounting sleeve 301 is fixedly connected to the front of the housing 2, and the front end of the rotating shaft 3 is rotatably connected to the mounting sleeve 301 through a bearing 302. After the housing 7 and the housing 2 are assembled, the bearing 302 is installed inside the mounting sleeve 301, making the rotation of the rotating shaft 3 smoother and more stable.

[0033] Secondly, an elastic retaining ring 303 is snapped onto the outer side of the rotating shaft 3 and the outer side of the bearing 302. A slot 304 is provided on the outer side of the rotating shaft 3 at the position corresponding to the elastic retaining ring 303. After the bearing 302 is installed, the elastic retaining ring 303 is snapped into the inner side of the slot 304, and the elastic retaining ring 303 is used to limit the bearing 302.

[0034] Finally, the planetary gear set 4 includes a gear sleeve 401 fixedly installed inside the housing 2, a planet carrier 402 rotatably connected to the outer side of the rotating shaft 3, and multiple sets of planetary gears 403 rotatably connected to the inner side of the planet carrier 402. All sets of planetary gears 403 mesh with the gear sleeve 401. The outer side of the rotating shaft 3 meshes with the multiple sets of planetary gears 403 through a sun gear 404. When the brushed DC motor body 1 drives the rotating shaft 3 to rotate, the sun gear 404 rotates, causing the multiple sets of planetary gears 403 to rotate. The multiple sets of planetary gears 403 rotate inside the gear sleeve 401 and drive the planet carrier 402 to rotate accordingly, thereby realizing the deceleration function.

[0035] When using the device of this technical solution, during the assembly of the housing 2 and the brushed DC motor body 1, it is only necessary to insert the mounting bracket 5 into the interior of the housing 2. The rear end of the housing 2 has an insertion opening. When the locking pin 601 contacts the insertion slot, it is squeezed and compressed into the interior of the mounting bracket 5 until both sets of mounting brackets 5 are inserted into the interior of the housing 2. Under the return of the return spring 603, the locking pin 601 is pushed into the locking hole inside the housing 2, thereby enabling quick assembly of the housing 2 and the brushed DC motor body 1. Subsequently, when disassembling and repairing the housing 2, only... By pinching the two sets of operating handles 602 to retract the locking pin 601 into the mounting bracket 5, the fixation between the housing 2 and the mounting bracket 5 can be released. Then, the housing 2 can be pulled out to complete the disassembly. When assembling the cover 7 and the housing 2, simply align the connectors 801 at the left and right ends of the cover 7 with the inside of the connectors 802 and insert them. Then, insert the fixing pin 8 into the inside of the connectors 801 and the connectors 802. Finally, screw on the fixing sleeve 803 to complete the assembly and fixation. The whole operation process is simple and convenient. This utility model greatly improves the convenience of disassembly, assembly and maintenance through its design.

[0036] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A planetary gear type brushed DC motor, the motor comprising a brushed DC motor body (1); characterized in that, A housing (2) is movably mounted on the front of the brushed DC motor body (1). A rotating shaft (3) is fixedly connected to the drive end of the brushed DC motor body (1) and inside the housing (2). A planetary gear set (4) is installed on the outside of the rotating shaft (3) and inside the housing (2). Mounting brackets (5) are fixedly connected to both the upper and lower sides of the brushed DC motor body (1). A locking mechanism (6) is installed at the front end of one set of mounting brackets (5). A cover (7) is fixedly mounted on the front of the housing (2). The left and right ends of the cover (7) are fixedly connected to the housing (2) by fixing pins (8). The locking mechanism (6) includes two sets of locking pins (601) symmetrically slidably connected inside the mounting bracket (5). The housing (2) has a locking hole at the position corresponding to the locking pin (601). An operating handle (602) is fixedly connected to one end of each set of locking pins (601). A return spring (603) is movably installed inside the mounting bracket (5) between the two sets of operating handles (602). The left and right ends of the cover (7) are fixedly connected to connectors (801), and the outer side of the housing (2) and the upper and lower ends of the connectors (801) are fixedly connected to joints (802). The fixing pin (8) passes through the inside of the connectors (801) and the joints (802), and the top end of the fixing pin (8) is threaded with a fixing sleeve (803).

2. The planetary gear type brushed DC motor according to claim 1, characterized in that, A baffle (604) is fixedly connected to the outside of the mounting bracket (5) and between the two sets of operating handles (602), and the interior of the two sets of operating handles (602) is slidably connected to the baffle (604) through a through groove (605).

3. A planetary gear type brushed DC motor according to claim 1, characterized in that, The interior of the housing (2) is connected to the mounting bracket (5) through the mounting slot (201), and rubber sealing gaskets (202) are embedded between the left and right sides of the mounting bracket (5) and the mounting slot (201).

4. A planetary gear type brushed DC motor according to claim 1, characterized in that, The front of the housing (2) is fitted with a rubber sealing ring (203), and the front of the housing (2) and the mounting bracket (5) are provided with an inner groove (204) at the position corresponding to the rubber sealing ring (203).

5. A planetary gear type brushed DC motor according to claim 1, characterized in that, The front of the housing (2) is fixedly connected to the mounting sleeve (301), and the front end of the rotating shaft (3) is rotatably connected to the mounting sleeve (301) through the bearing (302).

6. A planetary gear type brushed DC motor according to claim 5, characterized in that, An elastic retaining ring (303) is snapped onto the outside of the rotating shaft (3) and the outside of the bearing (302), and a slot (304) is provided on the outside of the rotating shaft (3) at the position corresponding to the elastic retaining ring (303).

7. A planetary gear type brushed DC motor according to claim 1, characterized in that, The planetary gear set (4) includes a gear sleeve (401) fixedly installed inside the housing (2). The outer side of the rotating shaft (3) is rotatably connected to a planet carrier (402). The inner side of the planet carrier (402) is rotatably connected to multiple sets of planetary gears (403), and all sets of planetary gears (403) mesh with the gear sleeve (401). The outer side of the rotating shaft (3) meshes with multiple sets of planetary gears (403) through a sun gear (404).

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