Large-current low-voltage small motor

Abstract

The utility model relates to the technical field of motor equipment, and discloses a large-current low-voltage small motor, which comprises a machine body, a rotating shaft arranged in the machine body, a heat dissipation assembly fixedly sleeved on the outer wall of the rotating shaft, a heat dissipation cover arranged on the right side of the machine body, insertion rods uniformly distributed on the outer wall of the heat dissipation cover, a connecting seat arranged on the outer wall of the machine body, and a positioning hole arranged on the connecting seat. Each connecting seat is provided with a lock catch assembly, the inner wall of each positioning hole is provided with a mounting groove, each lock catch assembly is located in the corresponding mounting groove and comprises a lock rod and a spring, one end of each spring is fixedly connected with the inner wall of the corresponding mounting groove, and the other end of each spring is fixedly connected with one end of the corresponding lock rod which is in sliding fit with the corresponding mounting groove. The other end of the locking rod extends out of the mounting groove and is in sliding friction contact with the outer wall of the inserting rod, and a clamping groove matched with the locking rod is formed in the surface of the inserting rod. The problem that the cooling effect of a fan on the motor is affected due to the fact that dust adheres to the surface of an existing low-voltage small motor after the existing low-voltage small motor is used for a long time and dust in the air also adheres to a fan cover is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a low-voltage small motor with large current. Background Art

[0002] Low-voltage small motors with large current are usually applied to equipment that requires large starting torque or continuous stable operation, such as new energy vehicles, robots or high-precision CNC machine tools, etc. They have high power density and fast response speed, but at the same time face heat dissipation challenges. High temperature may reduce the service life of the insulating materials inside the motor, affecting the motor efficiency and operation safety.

[0003] The existing Chinese utility model patent with the application number CN201921579749.0 discloses a low-voltage motor for AGV vehicles. Its solution is roughly as follows: a wind blade is provided on the rotor, which can stir the air flow inside the motor, so that the air flow accelerates through the ventilation holes on the front end cover and the rear end cover, further improving the heat dissipation effect of the motor.

[0004] The existing technology has the following technical defects: Although the above-mentioned low-voltage motor can dissipate heat from the motor by the rotation of the fan, dust will adhere to the surface of the fan after long-term use, and dust in the air will also adhere to the wind cover, and even cause the heat dissipation holes on the wind cover to be blocked by dust. The wind cover blocked by dust will affect the air flow when the fan is in use, thereby affecting the cooling effect of the fan on the motor. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a low-voltage small motor with large current, which is used to solve the problem that dust will adhere to the surface of the existing low-voltage small motor after long-term use, and dust in the air will also adhere to the wind cover, affecting the cooling effect of the fan on the motor.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] A small low-voltage motor with high current comprises a body with a rotating shaft installed inside, a heat dissipation component is fixedly sleeved on the outer wall of the right end of the rotating shaft, a heat dissipation cover is movably installed on the right side of the body, and plug rods are evenly distributed on the outer wall of the heat dissipation cover, a connecting seat is arranged on the outer wall of the body corresponding to the position of each plug rod, a positioning hole for inserting the plug rod is opened on the connecting seat, and a locking assembly is arranged at the position of the positioning hole on each connecting seat, and an inner wall of the positioning hole is provided with an inwardly recessed installation groove along the length direction of the connecting seat, the locking assembly is located in the installation groove, and the locking assembly comprises a locking rod and a spring, one end of the spring is fixedly connected to the inner wall of the installation groove, and the other end is fixedly connected to one end of the locking rod, the locking rod is slidably matched with the installation groove, the other end of the locking rod extends out of the installation groove and is in sliding friction contact with the outer wall of the plug rod, and the surface of the plug rod is provided with a card groove matching the locking rod.

[0008] Furthermore, an end of the locking rod close to the positioning hole is provided with an extrusion inclined surface for extruding with the insertion rod, and a free end of the insertion rod is provided with an arc chamfer.

[0009] Furthermore, an adjustment groove is provided on one side of the mounting groove inside the connecting seat, the locking rod is T-shaped, the horizontal section of the locking rod is located in the mounting groove, and the vertical section extends into the adjusting groove, and an inwardly recessed threaded hole is provided on the surface of the connecting seat, an adjusting member is threadedly connected to the threaded hole, the threaded hole is connected to the connecting groove, the aperture of the threaded hole is smaller than the diameter of the connecting groove, the inner end of the adjusting member is located in the adjusting groove, and the outer end extends out of the connecting seat to form an operating end, and a shift block for shifting the vertical section of the locking rod is fixedly provided on the inner end surface of the adjusting member.

[0010] Furthermore, a limit block is arranged on the surface of the connection seat in the circumferential direction of the adjusting member, and a stop block abutting against the limit frame is arranged on the operating end of the adjusting member.

[0011] Furthermore, the heat dissipation assembly includes a first annular block, which is fixedly sleeved on the surface of the rotating shaft, and a plurality of first fan blades located inside the heat dissipation cover are evenly mounted on the surface of the first annular block.

[0012] Furthermore, the side wall of the heat dissipation cover is configured as a louver structure.

[0013] Furthermore, a rotating rod is rotatably installed between the side walls of the heat dissipation cover, the axis of the rotating rod is parallel to the radial direction of the body, the right end surface of the rotating shaft is fixedly sleeved with a first bevel gear, the surface of the rotating rod is fixedly sleeved with a second bevel gear meshing with the first bevel gear, the surface of the rotating rod is fixedly sleeved with a second annular block, and the surface of the second annular block is evenly installed with a plurality of second fan blades located inside the heat dissipation cover.

[0014] Furthermore, the outer wall of the heat dissipation cover is evenly provided with heat dissipation holes, and the inner side of the outer wall of the heat dissipation cover is provided with filter cotton.

[0015] Advantages of the present utility model: By inserting the insertion rod into the positioning block of the connecting seat and then using the locking component, the quick disassembly and assembly effect of the heat dissipation cover is achieved, effectively solving the problem of cleaning the dust on the surface of the heat dissipation component. At the same time, the disassembly and assembly steps of the heat dissipation cover are simplified, facilitating the cleaning of the dust on the surfaces of the heat dissipation cover and the heat dissipation component, and avoiding the decline of the cooling effect of the heat dissipation component caused by dust blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a low-voltage small motor with a large current of the present utility model.

[0017] Figure 2 is a schematic structural diagram of the disassembled low-voltage small motor with a large current of the present utility model.

[0018] Figure 3 is a schematic structural diagram of the heat dissipation component in the present utility model.

[0019] Figure 4 is Figure 3 an enlarged structural diagram of part A in

[0020] Figure 5 is a side view of the heat dissipation component in the present utility model.

[0021] Figure 6 is a transverse sectional view of the connecting seat in the present utility model.

[0022] Figure 7 is a longitudinal sectional view of the connecting seat in the present utility model.

[0023] Among them,

[0024] 1. Body; 2. Rotating shaft; 3. Junction box; 4. Heat dissipation cover; 5. Insertion rod; 6. Connecting seat; 7. Positioning hole; 8. Installation groove; 9. Locking rod; 10. Spring; 11. Adjusting groove; 12. Threaded hole; 13. Adjusting part; 14. Dial block; 15. Limiting block; 16. Stopper; 17. Card slot; 18. Mounting plate; 19. Rotating rod; 20. First annular block; 21. First fan blade; 22. First bevel gear; 23. Second bevel gear; 24. Second annular block; 25. Second fan blade; 26. Heat dissipation hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following describes the implementation manners of the present utility model through specific embodiments. Those skilled in the art can understand the advantages and effects of the present utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for illustrative purposes, showing only schematic diagrams rather than physical diagrams, and should not be construed as limitations on the present utility model. To better illustrate the embodiments of the present utility model, some components in the figures will be omitted, enlarged, or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0026] In the figures of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the figures. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the figures are only for illustrative purposes and should not be construed as limitations on the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] As Figure 1-7 shown, a low-voltage small motor with a large current of the present utility model includes a body 1. A rotating shaft 2 is installed through the interior of the body 1. A left-side housing is fixedly sleeved on the outer wall at the left end of the body 1, and a right-side housing is fixedly sleeved on the outer wall at the right end of the body 1. A junction box 3 is fixedly connected to the upper end surface of the body 1. A heat dissipation component is fixedly sleeved on the outer wall at the right end of the rotating shaft 2. This is a common structure of a low-voltage motor in the prior art and will not be elaborated here.

[0028] A heat dissipation cover 4 is movably installed on the right side of the body 1. Specifically, the left outer wall of the heat dissipation cover 4 is clamped with the right-side housing of the body 1. Four insertion rods 5 are evenly distributed along the circumferential direction of the body 1 on the left outer wall of the heat dissipation cover 4. Connection seats 6 are fixedly arranged at positions corresponding to each insertion rod 5 on the surface of the right-side housing of the body 1. A positioning hole 7 for the insertion rod 5 to insert is formed in the connection seat 6. A locking component is arranged at the position of the positioning hole 7 on each connection seat 6. An inwardly recessed installation groove 8 is arranged along the length direction of the connection seat 6 on the inner wall of the positioning hole 7. The locking component is located in the installation groove 8. The locking component includes a locking rod 9 and a spring 10. One end of the spring 10 is fixedly connected to the inner wall of the installation groove 8, and the other end is fixedly connected to one end of the locking rod 9. The locking rod 9 is slidably matched with the installation groove 8. The other end of the locking rod 9 extends out of the installation groove 8 and is in sliding friction contact with the outer wall of the insertion rod 5. A card slot 17 matched with the locking rod 9 is arranged on the surface of the insertion rod 5.

[0029] In this embodiment, the locking rod 9 is T-shaped, the horizontal section of the locking rod 9 is parallel to the length direction of the connecting seat 6, and the vertical section is parallel to the width direction of the connecting seat 6. One end of the spring 10 is fixedly connected to the inner wall of the mounting groove 8, and the other end is fixedly connected to the vertical section of the locking rod 9. By moving the vertical section of the locking rod 9, the locking rod 9 can be driven to slide in the mounting groove 8, thereby releasing the locking effect of the insertion rod 5 and the locking rod 9.

[0030] An end of the locking rod 9 close to the positioning hole 7 is provided with an extrusion slope for extruding the insertion rod 5 , and a free end of the insertion rod 5 is provided with an arc chamfer to facilitate the extrusion and locking of the insertion rod 5 and the locking rod 9 .

[0031] A circular adjusting groove 11 is provided inside the connecting seat 6 on one side of the mounting groove 8, and the adjusting groove 11 is connected with the mounting groove 8. The horizontal section of the locking rod 9 is located in the mounting groove 8, and the vertical section extends into the adjusting groove 11. A threaded hole 12 recessed inwardly is provided on the surface of the connecting seat 6, and an adjusting member 13 is threadedly connected to the threaded hole 12. The threaded hole 12 is connected with the connecting groove, and the aperture of the threaded hole 12 is smaller than the aperture of the connecting groove. The center of the threaded hole 12 overlaps with the center of the adjusting groove 11. The inner end of the adjusting member 13 is located in the adjusting groove 11, and the outer end extends out of the connecting seat 6 to form an operating end. A shift block 14 for shifting the vertical section of the locking rod 9 is fixedly provided on the inner end surface of the adjusting member 13.

[0032] In this embodiment, the adjusting member 13 is a bolt. By rotating the adjusting member 13 , the shifting block 14 can be driven to push the vertical section of the locking rod 9 , so that the locking rod 9 slides in the installation groove 8 .

[0033] The surface of the connection seat 6 is fixedly provided with a limit block 15 in the circumferential direction of the adjusting member 13, and the operating end of the adjusting member 13 is fixedly provided with a stopper 16 that abuts against the limit block 15. Specifically, two stoppers 16 are provided outside the operating end of the adjusting member 13, so that the rotation range of the adjusting member 13 is within 90°. At the same time, when the stopper 16 abuts against one of the limit blocks 15, the shifting block 14 just shifts the vertical section of the locking rod 9 until the locking rod 9 is separated from the slot 17 of the plug rod 5. Such a structural design is simple in structure and easy to operate. Only by gently rotating the adjusting member 13, the locking effect of the heat dissipation cover 4 and the machine body 1 can be released. At the same time, the stopper 16 can enable the staff to intuitively observe the locking condition of the heat dissipation cover 4.

[0034] The heat dissipation assembly includes a first annular block 20, which is fixedly sleeved on the surface of the rotating shaft 2. A plurality of first fan blades 21 located inside the heat dissipation cover 4 are evenly installed on the surface of the first annular block 20. The rotation of the first fan blades 21 serves to dissipate axial heat inside the body 1.

[0035] The side wall of the heat dissipation hood 4 is configured as a louver structure. The advantage of such a design is that it can reduce dust accumulation inside the heat dissipation hood 4, especially when used in areas with high dust content, to prevent dust from accumulating on components such as heat dissipation components and affecting the use effect. At the same time, the gaps in the louver structure can be used as heat dissipation channels without affecting the heat dissipation effect.

[0036] A rotating rod 19 is rotatably installed between the side walls of the heat dissipation cover 4. Specifically, two mounting blocks are vertically fixed between the louver structures of the heat dissipation cover 4. Both ends of the rotating rod 19 are rotatably installed on the mounting blocks respectively. The axis of the rotating rod 19 is parallel to the radial direction of the body 1. A first bevel gear 22 is fixedly sleeved on the surface of the right end of the rotating shaft 2. A second bevel gear 23 meshing with the first bevel gear 22 is fixedly sleeved on the surface of the rotating rod 19. A second annular block 24 is fixedly sleeved on the surface of the rotating rod 19. A plurality of second fan blades 25 located inside the heat dissipation cover 4 are evenly installed on the surface of the second annular block 24. The rotation of the second fan blades 25 serves to dissipate radial heat inside the body 1.

[0037] The outer wall of the heat dissipation cover 4 is evenly provided with heat dissipation holes 26, and the inner side of the outer wall of the heat dissipation cover 4 is provided with filter cotton (not shown in the figure) to reduce the entry of dust.

[0038] Working principle:

[0039] When in use, first, the rotation of the rotating shaft 2 drives the first fan blade 21 and the first bevel gear 22 to rotate, and the first bevel gear 22 drives the second bevel gear 23, the rotating rod 19, and the second fan blade 25 to rotate, so as to dissipate axial and radial heat inside the body 1, and prevent damage caused by excessive temperature inside the body 1. Then, when it is necessary to clean the heat dissipation assembly and the heat dissipation cover 4, the adjusting member 13 is screwed so that the shifting block 14 shifts the vertical section of the locking rod 9, and the locking rod 9 slides in the installation groove 8, and the locking rod 9 is disengaged from the card slot 17 of the insertion rod 5, and the locking rod 9 and the insertion rod 5 are engaged. The locking effect disappears, so the four adjusting pieces 13 are turned in sequence, and the heat sink 4 can be directly removed from the body 1. After the heat sink components are cleaned, all the adjusting pieces 13 are turned back to their original positions, and the lever and the locking rod 9 are not in contact. Under the action of the spring 10, the locking rod 9 is reset, and the four insertion rods 5 are aligned with the four quasi-positioning holes 7 and inserted. The insertion rod 5 squeezes the extrusion slope of the locking rod 9, and finally the locking rod 9 is snapped into the card slot 17 of the insertion rod 5. The two are locked, and the installation of the heat sink 4 is completed. The heat sink 4 is easy and convenient to install and disassemble, and the heat sink 4 is firmly connected.

[0040] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A small low-voltage motor with high current, comprising a body (1), a rotating shaft (2) penetrating the interior of the body (1), a heat dissipation component fixedly sleeved on the outer wall of the right end of the rotating shaft (2), characterized in that: A heat dissipation cover (4) is movably mounted on the right side of the machine body (1), and insertion rods (5) are evenly distributed on the outer wall of the heat dissipation cover (4). A connecting seat (6) is arranged on the outer wall of the machine body (1) at the position corresponding to each insertion rod (5), and a positioning hole (7) for inserting the insertion rod (5) is provided on the connecting seat (6). A locking component is arranged at the position of the positioning hole (7) on each connecting seat (6), and an inwardly recessed mounting groove is arranged on the inner wall of the positioning hole (7) along the length direction of the connecting seat (6). (8), the locking assembly is located in the installation groove (8), and the locking assembly includes a locking rod (9) and a spring (10), one end of the spring (10) is fixedly connected to the inner wall of the installation groove (8), and the other end is fixedly connected to one end of the locking rod (9), the locking rod (9) is slidably matched with the installation groove (8), the other end of the locking rod (9) extends out of the installation groove (8) and is in sliding friction contact with the outer wall of the insertion rod (5), and the surface of the insertion rod (5) is provided with a card groove (17) that matches the locking rod (9).

2. A small low-voltage motor with high current according to claim 1, characterized in that: An end of the locking rod (9) close to the positioning hole (7) is provided with an extrusion slope for extruding the insertion rod (5), and the free end of the insertion rod (5) is provided with an arc chamfer.

3. A small low-voltage motor with high current according to claim 1, characterized in that: An adjusting groove (11) is arranged inside the connecting seat (6) on one side of the mounting groove (8); the locking rod (9) is T-shaped; the horizontal section of the locking rod (9) is located in the mounting groove (8) and the vertical section extends into the adjusting groove (11); a threaded hole (12) recessed inwardly is arranged on the surface of the connecting seat (6); an adjusting member (13) is connected to the threaded inner hole (12); the threaded hole (12) is connected to the connecting groove; the diameter of the threaded hole (12) is smaller than the diameter of the connecting groove; the inner end of the adjusting member (13) is located in the adjusting groove (11) and the outer end extends out of the connecting seat (6) to form an operating end; a shifting block (14) for shifting the vertical section of the locking rod (9) is fixedly arranged on the inner end surface of the adjusting member (13).

4. A small low-voltage motor with high current according to claim 3, characterized in that: A limit block (15) is arranged on the surface of the connection seat (6) in the circumferential direction of the adjusting member (13), and a stop block (16) is arranged at the operating end of the adjusting member (13) to abut against the limit frame.

5. A small low-voltage motor with high current according to claim 1, characterized in that: The heat dissipation assembly comprises a first annular block (20), the first annular block (20) being fixedly sleeved on the surface of the rotating shaft (2), and a plurality of first fan blades (21) located inside the heat dissipation cover (4) being evenly mounted on the surface of the first annular block (20).

6. A small low-voltage motor with high current according to claim 1, characterized in that: The side wall of the heat dissipation cover (4) is arranged in a louver structure.

7. A small low-voltage motor with high current according to claim 6, characterized in that: A rotating rod (19) is rotatably mounted between the side walls of the heat dissipation cover (4), the axis of the rotating rod (19) being parallel to the radial direction of the machine body (1), a first bevel gear (22) being fixedly sleeved on the surface of the right end of the rotating shaft (2), a second bevel gear (23) meshing with the first bevel gear (22) being fixedly sleeved on the surface of the rotating rod (19), a second annular block (24) being fixedly sleeved on the surface of the rotating rod (19), a plurality of second fan blades (25) located inside the heat dissipation cover (4) being evenly mounted on the surface of the second annular block (24).

8. A small low-voltage motor with high current according to claim 1, characterized in that: The outer wall of the heat dissipation cover (4) is evenly provided with heat dissipation holes (26), and the inner side of the outer wall of the heat dissipation cover (4) is provided with filter cotton.

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