Direct-current gear motor

Abstract

The invention discloses a direct-current speed reduction motor which comprises a motor body, a speed reduction assembly and a maintaining assembly, and the maintaining assembly comprises a maintaining frame, a deformation part and a maintaining part. During installation, pressure is applied to the two retaining pieces in the opposite directions, so that the deformation pieces are stressed to deform, the area of the compression area is reduced, the retaining pieces enter the sliding grooves, the positioning blocks on the speed reduction assembly are inserted into the compression area, and the fixing holes and the retaining pieces are kept to be matched for limiting. The direct-current gear motor is compact in structure, connection of the motor body and the speed reduction assembly is achieved through the maintaining assembly, and the speed reduction assembly can be assembled for use in use modes of different scenes, or the motor body can be independently used for use. Meanwhile, the speed reduction assembly can be installed or assembled without the cooperation of other special tools through the maintaining assembly, so that workers can conveniently, timely and rapidly disassemble and assemble the speed reduction assembly, and in addition, the trouble of carrying special disassembling and assembling tools is saved.

Description

A DC geared motor Technical Field

[0001] This invention relates to motor technology, and more particularly to a DC geared motor. Background Technology

[0002] A geared motor is an integrated unit of a speed reducer and a motor. This type of integrated unit is also commonly referred to as a geared motor or geared motor. It is usually assembled by a professional speed reducer manufacturer and supplied as a complete set with the motor. However, the lifespan of current geared motors is generally short, mainly due to motor damage. Since the geared motor is an integrated unit of a speed reducer and a motor, it cannot be replaced or repaired after the motor is damaged, resulting in high costs.

[0003] CN211405752U discloses a DC geared motor with a replaceable gearbox, in which the gearbox is mounted on the motor using screws, thus enabling the gearbox to be disassembled. However, special tools are required to install and remove the gearbox, which affects the operational efficiency between the motor and the gearbox. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes a DC geared motor.

[0005] A DC geared motor includes: a motor body, a first rotating shaft on the motor body, a fixing plate on the motor body, and retaining assemblies on both sides of the fixing plate; a reduction assembly mounted on the motor body via the retaining assemblies, the reduction assembly having a mounting plate that cooperates with the fixing plate, the mounting plate being connected to the motor body via the retaining assemblies; a second rotating shaft extending from the outside of the reduction assembly; and a reduction mechanism inside the reduction assembly, the reduction mechanism being connected to both the first and second rotating shafts; wherein the retaining assembly includes a retainer, the retainer being bolted to the fixing plate. On both sides of the fixed plate, a sliding groove is formed in the middle of the retainer; a deformable member is disposed in the sliding groove, and a compression area is formed in the middle of the deformable member; a positioning block is disposed in the compression area at the bottom of the mounting plate; and retainers are symmetrically disposed on both sides of the deformable member. The retainers are pushed close to the inner wall of the sliding groove by the elastic force of the deformable member. The mounting plate is provided with fixing holes that cooperate with the retainers. During installation, pressure is applied to the two retainers in opposite directions, causing the deformable member to deform under force, the area of ​​the compression area to shrink, and the retainers to enter the sliding groove. The positioning block on the deceleration assembly is inserted into the compression area, and the fixing hole is engaged with the retainer for limiting position.

[0006] In this invention, the length of the sliding groove is three times the length of the deformable part and the retaining part.

[0007] In this invention, the retainer consists of a limiting block and symmetrically arranged fixing blocks, the sliding groove is located in the middle of the limiting block, and the sliding groove opens towards the side of the fixing plate.

[0008] In this invention, the deformable member is composed of a deformable segment and symmetrically arranged connecting segments and arc segments. An extension segment is provided on the arc segment, and a sliding segment is provided on the extension segment. The sliding segment is mounted on the retaining member.

[0009] In this invention, when the deformable component is not installed, the distance between the connecting segments is greater than the distance between the connecting segments after the deformable component is installed.

[0010] In this invention, a notch is formed on the connecting section and the deformation section, and a pressure-applying member is provided in the notch. The pressure-applying member consists of a hinge plate and a pressure-applying block. One end of the hinge plate is hinged to the connecting section by a hinge rod.

[0011] In this invention, the hinge rod is disposed on the connecting section and near one end of the arc-shaped section.

[0012] In this invention, the retaining member is composed of an elastic arm and a retaining block. The elastic arm is installed in conjunction with a fixing hole. One side of the retaining block is provided with a T-shaped groove. Both ends of the deformable member are disposed in the T-shaped groove. The other side of the retaining block is provided with a sliding opening. The sliding opening is slidably engaged with the retainer. A limiting protrusion is provided at the lower end of the sliding opening.

[0013] In this invention, the elastic arm is provided with a guide slope and a blocking surface, and the blocking surface is located at the lower end of the guide slope.

[0014] In this invention, the width of the fixing hole is greater than the width of the elastic arm, and one side of the elastic arm is kept in contact with one inner wall of the fixing hole.

[0015] The DC geared motor of this invention has the following advantages: The DC geared motor has a compact structure, and the connection between the motor body and the gear reduction assembly is achieved through a retaining component. This allows for the assembly and use of the gear reduction assembly in different scenarios, or for the motor body to be used alone. Furthermore, the retaining component eliminates the need for special tools during installation or assembly of the gear reduction assembly, facilitating quick and easy disassembly and assembly by workers, and saving the inconvenience of carrying special tools. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the DC geared motor structure of the present invention; Figure 2 is a schematic diagram of the mounting plate and retaining assembly structure in Figure 1; Figure 3 is a schematic diagram of the structure in Figure 2 from another direction; Figure 4 is a partial enlarged view of point A in Figure 3; Figure 5 is an exploded view of Figure 2; Figure 6 is a schematic diagram of the mounting plate structure in Figure 5; Figure 7 is a schematic diagram of the retainer structure in Figure 5; Figure 8 is a schematic diagram of the retaining member structure in Figure 5; Figure 9 is a schematic diagram of the deformation member and pressure member structure in Figure 5; Figure 10 is a schematic diagram of the positioning block and retaining assembly structure in the installation state of the present invention.

[0017] In the diagram: 1. Motor body; 2. Reduction assembly; 3. Holding assembly; 4. Fixing plate; 5. Circular hole; 6. Mounting plate; 7. Fixing hole; 8. Holding component; 9. Second rotating shaft; 10. Cage; 11. Deformation component; 12. Sliding groove; 13. Limiting block; 14. Fixing block; 15. Sliding opening; 16. Limiting protrusion; 17. Compression area; 18. Positioning block; 19. Deformation section; 20. Connecting section; 21. Arc-shaped section; 22. Extension section; 23. Sliding section; 24. Notch; 25. Pressure application component; 26. Hinge plate; 27. Pressure application block; 28. Hinge rod; 29. ​​Elastic arm; 30. Holding block; 31. T-slot; 32. Guide slope; 33. Blocking surface. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] As shown in Figures 1 to 10, the DC geared motor of the present invention includes a motor body 1, a reduction assembly 2, and a retaining assembly 3. The retaining assembly 3 is used to mount the reduction assembly 2 on the motor body 1, so that the reduction assembly 2 can be used separately or in combination according to different usage scenarios, thereby expanding the application range of the motor body 1.

[0020] A first rotating shaft (not shown in the figure) is provided on the motor body 1. A fixing plate 4 is also provided on the motor body 1. Holding components 3 are provided on both sides of the fixing plate 4. The holding components 3 can be freely disassembled and assembled, making it convenient to assemble and use the holding components 3 according to the usage scenario.

[0021] The fixing plate 4 on the motor body 1 has a circular protrusion in the middle, which cooperates with the circular hole 5 in the middle of the mounting plate 6 to position the mounting plate 6, so as to facilitate the fixing hole 7 on the mounting plate 6 to cooperate with the retaining member 8 for installation.

[0022] The reduction gear assembly 2 is mounted on the motor body 1 via a retaining assembly 3. The reduction gear assembly 2 has a mounting plate 6, which cooperates with the fixing plate 4. The mounting plate 6 is connected to the motor body 1 via the retaining assembly 3, allowing for assembly and use of the reduction gear assembly 2 in different scenarios, or for use with the motor body 1 alone. Furthermore, the retaining assembly 3 allows the reduction gear assembly 2 to be installed or assembled without the need for other special tools, facilitating quick and easy disassembly and assembly by personnel, and eliminating the hassle of carrying special disassembly and assembly tools.

[0023] A second rotating shaft 9 extends outward from the deceleration assembly 2. A deceleration mechanism (not shown in the figure) is provided inside the deceleration assembly 2. The deceleration mechanism is connected to the first rotating shaft and the second rotating shaft 9 respectively.

[0024] The retaining assembly 3 includes a retainer 10, a deformable element 11, and symmetrically arranged retaining elements 8. The retaining elements 8 are installed on both sides of the fixed plate 4, while the deformable element 11 is installed in the middle of the retainer 10 through the retaining elements 8. By applying pressure to the retaining elements 8, the deformable element 11 can be deformed under force, thereby facilitating the sliding of the retaining elements 8 in the sliding groove 12 in the middle of the retainer 10 and changing its position.

[0025] Since the length of the sliding groove 12 is three times the length of the deformable part 11 and the retaining part 8, when the sliding groove 12 of the deformable part 11 and the retaining part 8 is far away from the fixed plate 4, the retaining part 8 will not restrict the position of the mounting plate 6. The motor body 1 can be installed on the equipment without removing the retaining component 3. The retaining component 3 can be moved to achieve avoidance installation of the motor body 1.

[0026] The retainer 10 is bolted to both sides of the fixed plate 4, and a sliding groove 12 is formed in the middle of the retainer 10. The retainer 10 consists of a limiting block 13 and symmetrically arranged fixing blocks 14. The sliding groove 12 is located in the middle of the limiting block 13 and opens to the side facing the fixed plate 4.

[0027] The elastic force generated by the deformable element 11 can push the retainer 8 into contact with the inner wall of the sliding groove 12, increasing the friction and preventing the retainer 8 from easily detaching from the sliding groove 12. Furthermore, a limiting protrusion 16 is provided at the lower end of the sliding opening 15 on the retainer 8, which can prevent the retainer 8 and the deformable element 11 from detaching from the sliding groove 12.

[0028] The deformable part 11 is disposed in the sliding groove 12, and a compression area 17 is formed in the middle of the deformable part 11. The bottom of the mounting plate 6 is provided with a positioning block 18 disposed in the compression area 17.

[0029] The deformable component 11 consists of a deformable segment 19 and symmetrically arranged connecting segments 20 and arc-shaped segments 21. An extension segment 22 is provided on the arc-shaped segment 21, and a sliding segment 23 is provided on the extension segment 22. The sliding segment 23 is mounted on the retaining component 8. When the deformable component 11 is not installed, the distance between the connecting segments 20 is greater than the distance between the connecting segments 20 after the deformable component 11 is installed. When the deformable component 11 is not installed, the connecting segments 20 on both sides of the retaining component 11 are in an inclined state; after installation, the connecting segments 20 are in a parallel state.

[0030] A notch 24 is formed on the connecting section 20 and the deformable section 19. A pressure-applying member 25 is provided in the notch 24. The pressure-applying member 25 consists of a hinge plate 26 and a pressure block 27. One end of the hinge plate 26 is hinged to the connecting section 20 via a hinge rod 28. The hinge rod 28 is provided on the connecting section 20 and is located near one end of the arc-shaped section 21.

[0031] The placement of the pressure-applying component 25 in the middle of the deformable component 11 prevents it from being subjected to excessive pressure, thus protecting it and allowing for repeated use. Furthermore, the pressure-applying component 25 can be pushed by the positioning block 18, ensuring it pushes the retaining component 8 instead of the deformable component 11 pushing the retaining component 8 towards the inner wall of the sliding groove 12. This provides better protection for the deformable component 11 and extends its service life. The positioning component can also apply pressure to the pressure-applying component 25, creating a relatively stable rigid connection between the positioning component, the pressure-applying component 25, and the retaining component 8.

[0032] Retaining members 8 are symmetrically arranged on both sides of the deformable member 11. The retaining members 8 are used to apply pressure to the deformable member 11 and also to install it. Pressing the retaining members 8 applies pressure to the deformable member 11. The retaining members 8 are pushed closer to the inner wall of the sliding groove 12 by the elastic force of the deformable member 11. The mounting plate 6 has fixing holes 7 that mate with the retaining members 8. When the elastic force generated by the compression of the deformable member 11 returns to its original position, this return force is transmitted to the retaining members 8, and then to the retainer 10. This results in greater pressure between the retaining members 8 and the retainer 10, increasing the friction between them and preventing the retaining members 8 from easily sliding within the sliding groove 12.

[0033] The retainer 8 consists of an elastic arm 29 and a retaining block 30. The elastic arm 29 is installed in conjunction with the fixing hole 7. A T-groove 31 is provided on one side of the retaining block 30. Both ends of the deformable part 11 are set in the T-groove 31, that is, the extension section 22 and the sliding section 23 are set in the T-groove 31, which can realize the installation of the retainer 8 and the deformable part 11.

[0034] On the other side of the retaining block 30, there is a sliding opening 15. The sliding opening 15 slides in conjunction with the retainer 10. A limiting protrusion 16 is provided at the lower end of the sliding opening 15. The sliding opening 15 cooperates with the limiting block 13, and the height of the sliding opening 15 matches the thickness of the limiting block 13. The limiting protrusion 16 is located at the lower end of the limiting block 13, which can ensure that both the upper and lower ends of the retaining member 8 are restricted, so that the retaining member 8 can slide within the sliding groove 12 without causing the retaining member 8 to move out of the limitation of the limiting block 13.

[0035] The elastic arm 29 is provided with a guide slope 32 and a blocking surface 33, with the blocking surface 33 located at the lower end of the guide slope 32. The width of the fixing hole 7 is greater than the width of the elastic arm 29, and one side of the elastic arm 29 is kept in contact with one inner wall of the fixing hole 7.

[0036] The guide ramp 32 can cooperate with the fixing hole 7 to allow the elastic arm 29 to enter the fixing hole 7 and then keep the elastic arm 29 bent under force. Since one inner wall of the fixing hole 7 is in contact with one side of the elastic arm 29, the other inner wall of the fixing hole 7 is not in contact with the other side of the elastic arm 29. Therefore, after the elastic arm 29 is deformed under force, it can deform towards the hollow area, so that the guide ramp 32 can smoothly reach the upper end of the fixing hole 7, and then contact the upper surface of the mounting plate 6 through the blocking surface 33, thus restricting the position of the mounting plate 6 on the fixing plate 4.

[0037] During installation, pressure is applied to the two retaining members 8 in opposite directions, causing the deformable member 11 to deform under force, reducing the area of ​​the compression region 17, and allowing the retaining member 8 to enter the sliding groove 12. At this point, the deformable member 11 and the retaining member 8 are installed into the sliding groove 12. Meanwhile, the positioning block 18 on the deceleration assembly 2 is inserted into the compression region 17, and the fixing hole 7 is engaged with the retaining member 8 for limiting the position. The fixing hole 7 will push the elastic arm 29 to deform under force, thereby passing over the fixing hole 7. The elastic arm 29 limits the position of the fixing hole 7, thereby achieving the installation limitation between the mounting plate 6 and the fixing plate 4.

[0038] When disassembling the deceleration assembly 2, multiple elastic arms 29 can be pushed to push the guide ramp 32, thereby causing the blocking surface 33 to disengage from the surface of the mounting plate 6. This allows the blocking surface 33 to reach the upper end of the fixing hole 7, meaning the elastic arms 29 are no longer in contact with the mounting plate 6, thus removing the restriction on the mounting plate 6. The deceleration assembly 2 is then removed, and the mounting plate 6 is moved out via the deceleration assembly 2. The positioning block 18 at the lower end of the mounting plate 6 is then removed from the compression area 17.

[0039] During the installation and removal of the reduction assembly 2, no special external tools are required. It can be installed and removed manually by the staff, which simplifies the operation process and improves the installation efficiency between the reduction assembly 2 and the motor body 1.

[0040] In addition, the rigid contact between the positioning block 18, the pressure member 25 and the retaining member 8 can ensure the stability between the reduction assembly 2 and the motor body 1, and avoid the risk of the reduction assembly 2 rotating with the first rotating shaft.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A DC geared motor, characterized in that, include: The motor body includes a first rotating shaft and a fixed plate. Retaining assemblies are located on both sides of the fixed plate. A reduction gear assembly is mounted on the motor body via the retaining assemblies. The reduction gear assembly has a mounting plate that mates with the fixed plate. The mounting plate is connected to the motor body via the retaining assemblies. A second rotating shaft extends from the outside of the reduction gear assembly. A reduction mechanism is located inside the reduction gear assembly and is connected to both the first and second rotating shafts. The retaining assembly includes a retainer, which is bolted to both sides of the fixed plate. The retainer has a sliding groove in the middle; a deformable member is disposed in the sliding groove, and a compression area is formed in the middle of the deformable member; a positioning block is disposed in the compression area at the bottom of the mounting plate; and retainers are symmetrically disposed on both sides of the deformable member. The retainers are pushed close to the inner wall of the sliding groove by the elastic force of the deformable member. The mounting plate is provided with fixing holes that cooperate with the retainers. During installation, pressure is applied to the two retainers in opposite directions, causing the deformable member to deform under force, the area of ​​the compression area to shrink, and the retainers to enter the sliding groove. The positioning block on the deceleration assembly is inserted into the compression area, and the fixing hole is engaged with the retainer for limiting the position.

2. The DC geared motor according to claim 1, characterized in that, The length of the sliding groove is three times the length of the deformable part and the retaining part.

3. The DC geared motor according to claim 1, characterized in that, The retainer consists of a limiting block and symmetrically arranged fixing blocks. The sliding groove is located in the middle of the limiting block and opens on the side facing the fixing plate.

4. The DC geared motor according to claim 1, characterized in that, The deformable component consists of a deformable segment and symmetrically arranged connecting segments and arc segments. An extension segment is provided on the arc segment, and a sliding segment is provided on the extension segment. The sliding segment is mounted on the retaining component.

5. The DC geared motor according to claim 4, characterized in that, When the deformable component is not installed, the distance between the connecting segments is greater than the distance between the connecting segments after the deformable component is installed.

6. The DC geared motor according to claim 5, characterized in that, A notch is formed on the connecting section and the deformation section, and a pressure-applying component is provided in the notch. The pressure-applying component consists of a hinge plate and a pressure block. One end of the hinge plate is hinged to the connecting section by a hinge rod.

7. The DC geared motor according to claim 6, characterized in that, The hinge rod is located on the connecting section and near one end of the arc-shaped section.

8. The DC geared motor according to claim 1, characterized in that, The retainer consists of an elastic arm and a retaining block. The elastic arm is installed in conjunction with a fixing hole. One side of the retaining block is provided with a T-shaped groove. Both ends of the deformable part are set in the T-shaped groove. The other side of the retaining block is provided with a sliding opening. The sliding opening is slidably connected to the retainer. A limiting protrusion is provided at the lower end of the sliding opening.

9. The DC geared motor according to claim 8, characterized in that, The elastic arm is provided with a guide ramp and a blocking surface, with the blocking surface located at the lower end of the guide ramp.

10. The DC geared motor according to claim 9, characterized in that, The width of the fixing hole is greater than the width of the elastic arm, and one side of the elastic arm is kept in contact with one inner wall of the fixing hole.

Images