Three-phase asynchronous motor

Abstract

The utility model provides a three-phase asynchronous motor, which comprises a shell, a rotor and a stator, the stator is fixed on the inner wall of the shell and is wound with a copper wire, the rotor is rotatably connected on the shell and is positioned in the rotor, a junction box is fixedly connected on the outer wall of the shell, a binding post is arranged in the junction box, and the binding post is connected with the shell. The wiring terminal is sleeved with a wiring ring, the wiring ring is connected with a copper wire, the wiring terminal is sleeved with a contact ring abutting against the wiring ring, the contact ring is connected with an electric wire, the bottom wall of the wiring box is fixedly connected with an insulating base, the wiring terminal is sleeved with an insulating sleeve, and the insulating sleeve is fixedly connected with the insulating base. One end, far away from the contact ring, of the insulation sleeve is connected with an elastic buffer ring, the cross section of the elastic buffer ring is S-shaped, one end, far away from the insulation sleeve, of the buffer ring is connected with a connecting seat, the junction box is connected with a cover plate, and the connecting seat abuts against the surface of the cover plate, so that the effect of improving high efficiency and energy conservation is achieved.

Description

Technical Field

[0001] The utility model relates to a motor, in particular to a three-phase asynchronous motor. Background Art

[0002] Motors are widely used tools in production. Among them, three-phase AC asynchronous motors are electric drive devices that convert electrical energy into mechanical energy.

[0003] At present, a Chinese patent with authorization announcement number CN214707366U discloses a three-phase asynchronous motor, which includes a casing, a stator arranged in the casing and a rotor arranged in the casing, the casing is provided with a support seat, the casing includes a shell, an end cover arranged in the shell and a cover shell arranged in the shell, and the end cover is integrally arranged with the shell.

[0004] A junction box is fixed to the housing, and a terminal is fixed to the junction box. When setting the stator, the wound stator winding is first inserted into the corresponding winding groove, and then the various stator windings are connected by copper wires, and then connected to the terminal of the junction box. When in use, the wires are usually connected to the terminal with screws. When the motor is working, the rotor rotates and generates vibrations. The vibrations are transmitted to the screws, which can easily loosen the screws and cause poor contact with the terminal, resulting in heat generation and increased energy consumption. Utility Model Content

[0005] In view of this, the utility model aims to provide a three-phase asynchronous motor, which makes the connection ring and the contact ring difficult to separate, so as to avoid the problems of heating and increased energy consumption.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a three-phase asynchronous motor, including a shell, a rotor, and a stator. The stator is fixed on the inner wall of the shell and is wound with copper wire. The rotor is rotatably connected to the shell and is located inside the rotor. A terminal box is fixedly connected to the outer wall of the shell. A terminal post is arranged in the terminal box. A terminal ring is sleeved on the terminal post. The terminal ring is connected to the copper wire. A contact ring that conflicts with the terminal ring is sleeved on the terminal post. The contact ring is connected to an electric wire. An insulating seat is fixedly connected to the bottom wall of the terminal box. The terminal post is fixed on the insulating seat. An insulating sleeve is sleeved on the terminal post. An elastic buffer ring is connected to one end of the insulating sleeve away from the contact ring. The cross-section of the elastic buffer ring is S-shaped. An end of the buffer ring away from the insulating sleeve is connected to a connecting seat. A cover plate is connected to the terminal box, and the connecting seat conflicts with the surface of the cover plate.

[0007] To implement the above technical solution, the copper wire is connected to the terminal ring and then sleeved on the terminal post; the electric wire is connected to the contact ring and then sleeved on the terminal post so that the terminal ring and the contact ring are in contact with each other; then the insulating sleeve is sleeved on the terminal post so that the insulating sleeve is pressed against the contact ring so that the terminal ring and the contact ring are pressed against each other; the cover plate is covered and fixed on the terminal box so that the cover plate is pressed against the connection seat; the elastic buffer ring is deformed and generates elastic force and generates extrusion force between the terminal ring and the contact ring; during the rotation of the rotor, the vibration generated is alleviated by the elastic buffer ring so that the terminal ring and the contact ring are kept in contact, so that the terminal ring and the contact ring have good conductivity and low resistance, so as to achieve a stable, efficient and energy-saving effect.

[0008] As a preferred solution of the utility model, a limiting column is fixedly connected to the surface of the cover plate, a limiting hole is provided on the inner wall of the connecting seat, and the limiting column penetrates into the limiting hole and contacts the inner wall of the limiting hole.

[0009] To implement the above technical solution, the cover plate is fixed to the junction box, and the limiting column is embedded in the limiting hole, so that the connecting seat is not easily offset.

[0010] As a preferred solution of the utility model, the insulating seat is connected with a horizontal plate and a vertical plate, the horizontal plate is arranged along the width direction of the insulating seat, and the vertical plate is arranged along the length direction of the insulating seat, and a compartment for placing the terminal is formed between the horizontal plate and the vertical plate.

[0011] To implement the above technical solution, the terminal is placed in the compartment to improve safety and prevent short circuit problems from occurring.

[0012] As a preferred solution of the utility model, the insulating seat is connected to the terminal post via a step, the step is fixed on the insulating seat, the height of the step is greater than 1 cm, and the terminal ring and the contact ring are both located on the step.

[0013] To implement the above technical solution, the step is set so that there is a distance between the wiring ring and the contact ring and the bottom wall of the insulating seat, so that the connection between the electric wire and the contact ring is not easy to bend. At the same time, the connection between the copper wire and the wiring ring is also not easy to bend, and the wiring ring and the terminal are not easy to tilt due to the support of the copper wire, so that the connection between the contact ring and the wiring ring is more fitting and stable.

[0014] As a preferred solution of the utility model, a positioning component for limiting the position of the electric wire and the copper wire is arranged on the insulating seat.

[0015] By implementing the above technical solution, the electric wire and the copper wire are not likely to collide with each other, so that a large area of ​​separation occurs between the contact ring and the wiring ring.

[0016] As a preferred solution of the utility model, the positioning assembly includes a positioning plate and an auxiliary plate. The positioning plate is fixed on an insulating seat. The two ends of the positioning plate are respectively used to contact the electric wires and copper wires. The auxiliary plate is fixed to one end of the positioning plate away from the insulating seat and extends in a direction away from the positioning plate.

[0017] To implement the above technical solution, the positioning plate is fixed on the insulating seat so that the electric wire and the copper wire are respectively located at both ends of the positioning plate to prevent the electric wire and the copper wire from being easily touched. The auxiliary plate is set to play a limiting role to prevent the electric wire and the copper wire from being easily broken.

[0018] As a preferred solution of the utility model, a placement hole is provided on the side wall of the junction box, a shock-absorbing sleeve is embedded in the placement hole, a clamping groove is provided on the shock-absorbing sleeve, and the wire passes through the clamping groove.

[0019] By implementing the above technical solution, the wires can be stably placed in the clamping groove, making it difficult for the wires to move, thereby improving stability.

[0020] As a preferred solution of the utility model, a plurality of heat sinks are fixedly connected to the outer wall of the shell.

[0021] Implementing the above technical solution can improve heat dissipation effect and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the external structure of the embodiment;

[0023] Figure 2 To show the structural diagram of the junction box;

[0024] Figure 3 A schematic diagram showing the location of the placement holes;

[0025] Figure 4 A cross-sectional schematic diagram showing a cover plate;

[0026] Figure 5 To reflect the structural diagram of the insulating sleeve;

[0027] Figure 6 A cross-sectional schematic diagram showing a shock-absorbing sleeve.

[0028] Figure numerals: 1. shell; 11. rotor; 12. heat sink; 2. junction box; 3. insulating seat; 31. terminal; 32. terminal ring; 33. contact ring; 41. insulating sleeve; 42. elastic buffer ring; 43. connecting seat; 44. limiting hole; 5. cover plate; 51. limiting column; 61. horizontal plate; 62. vertical plate; 63. step; 7. positioning assembly; 71. positioning plate; 72. auxiliary plate; 73. groove; 8. placement hole; 81. shock-absorbing sleeve; 82. clamping groove. DETAILED DESCRIPTION

[0029] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0030] A three-phase asynchronous motor includes a housing 1, a rotor 11, and a stator (not shown in the figure). The stator is fixed to the inner wall of the housing 1 and is wound with copper wire, and the rotor 11 is rotatably connected to the housing 1 through a bearing and is located inside the rotor 11. The stator, the rotor 11, and the copper wire are prior art and are not described in detail in this embodiment. A plurality of heat sinks 12 are fixedly connected to the outer wall of the housing 1, and the heat sinks 12 are made of aluminum.

[0031] A junction box 2 is fixedly connected to the outer wall of the housing 1, a junction post 31 is arranged in the junction box 2, a junction ring 32 is sleeved on the junction post 31, the junction ring 32 is connected to the copper wire, a contact ring 33 is sleeved on the junction post 31 to contact the junction ring 32, and the contact ring 33 is connected to the wire. The junction ring 32 is located below the contact ring 33 and is in a sheet shape.

[0032] An insulating seat 3 is fixedly connected to the bottom wall of the junction box 2, and the terminal 31 is fixed to the insulating seat 3. An insulating sleeve 41 is sleeved on the terminal 31, and the end of the insulating sleeve 41 is in contact with the upper surface of the contact ring 33. An elastic buffer ring 42 is connected to the end of the insulating sleeve 41 away from the contact ring 33, and the cross section of the elastic buffer ring 42 is S-shaped. A connecting seat 43 is connected to the end of the buffer ring away from the insulating sleeve 41. A cover plate 5 is connected to the junction box 2, and the connecting seat 43 is in contact with the surface of the cover plate 5.

[0033] The insulating sleeve 41 , the elastic buffer ring 42 , and the connecting seat 43 are integrated and made of rubber.

[0034] A limiting post 51 is fixedly connected to the lower surface of the cover plate 5, and the limiting post 51 is in a truncated cone shape. A limiting hole 44 is provided on the inner wall of the connection seat 43, and the limiting post 51 penetrates into the limiting hole 44 and contacts the inner wall of the limiting hole 44, so that the connection seat 43 is not easy to move. The cover plate 5 applies downward pressure to the connection seat 43, so that the elastic buffer ring 42 applies downward pressure to the insulating sleeve 41, so that the insulating sleeve 41 and the contact ring 33 are pressed tightly.

[0035] The insulating seat 3 is integrally connected with a horizontal plate 61 and a vertical plate 62. The horizontal plates 61 have two and are arranged in parallel. The vertical plate 62 has one. The horizontal plate 61 is arranged along the width direction of the insulating seat 3, and the vertical plate 62 is arranged along the length direction of the insulating seat 3. A compartment for placing the terminal 31 is formed between the horizontal plate 61 and the vertical plate 62. The vertical plate 62 and the horizontal plate 61 are arranged vertically. A total of six compartments are formed, and each compartment has a terminal 31.

[0036] The insulating seat 3 is connected to the terminal 31 through a step 63. The step 63 is cylindrical and fixed on the insulating seat 3. Each compartment has a step 63. The height of the step 63 is greater than 1 cm, and the outer diameter of the copper wire and the outer diameter of the electric wire are both less than 1 cm. The terminal ring 32 and the contact ring 33 are both located on the step 63, so that the terminal ring 32 and the contact ring 33 can fit better, with lower resistance, less heat, and more efficient energy saving.

[0037] The insulating seat 3 is provided with a positioning assembly 7 for limiting the position of the electric wire and the copper wire. The positioning assembly 7 includes a positioning plate 71 and an auxiliary plate 72. The cross section of the positioning plate 71 is strip-shaped and fixed to the insulating seat 3. The two ends of the positioning plate 71 are used to contact the electric wire and the copper wire respectively, and there are grooves 73 on both sides of the positioning plate 71, so that the electric wire and the copper wire are respectively embedded in the two grooves 73. The auxiliary plate 72 is fixed to one end of the positioning plate 71 away from the insulating seat 3 and extends in a direction away from the positioning plate 71. The positioning plate 71 is made of rubber.

[0038] A circular placement hole 8 is provided on the side wall of the junction box 2, a shock-absorbing sleeve 81 made of rubber is embedded in the placement hole 8, a strip-shaped clamping groove 82 is provided on the shock-absorbing sleeve 81, and the wire passes through the clamping groove 82. The outer diameter of the wire is slightly larger than the width of the clamping groove 82, so that the inner wall of the clamping groove 82 can clamp the wire to achieve wire positioning.

[0039] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A three-phase asynchronous motor, comprising a housing (1), a rotor (11), and a stator, wherein the stator is fixed to the inner wall of the housing (1) and is wound with a copper wire, the rotor (11) is rotatably connected to the housing (1) and is located inside the rotor (11), a terminal box (2) is fixedly connected to the outer wall of the housing (1), a terminal post (31) is arranged in the terminal box (2), a terminal ring (32) is sleeved on the terminal post (31), the terminal ring (32) is connected to the copper wire, a contact ring (33) is sleeved on the terminal post (31) and contacts the terminal ring (32), the contact ring (33) is connected to an electric wire, and the characteristic is that: An insulating seat (3) is fixedly connected to the bottom wall of the junction box (2), a terminal (31) is fixed on the insulating seat (3), an insulating sleeve (41) is sleeved on the terminal (31), an end of the insulating sleeve (41) away from the contact ring (33) is connected to an elastic buffer ring (42), the cross section of the elastic buffer ring (42) is S-shaped, and an end of the buffer ring away from the insulating sleeve (41) is connected to a connecting seat (43), a cover plate (5) is connected to the junction box (2), and the connecting seat (43) is in contact with the surface of the cover plate (5).

2. A three-phase asynchronous motor according to claim 1, characterized in that: A limiting column (51) is fixedly connected to the surface of the cover plate (5), a limiting hole (44) is provided on the inner wall of the connecting seat (43), and the limiting column (51) penetrates into the limiting hole (44) and contacts the inner wall of the limiting hole (44).

3. A three-phase asynchronous motor according to claim 1, characterized in that: The insulating seat (3) is connected to a horizontal plate (61) and a vertical plate (62). The horizontal plate (61) is arranged along the width direction of the insulating seat (3), and the vertical plate (62) is arranged along the length direction of the insulating seat (3). A compartment for placing the terminal (31) is formed between the horizontal plate (61) and the vertical plate (62).

4. A three-phase asynchronous motor according to claim 1, characterized in that: The insulating seat (3) is connected to the terminal (31) via a step (63), the step (63) is fixed on the insulating seat (3), the height of the step (63) is greater than 1 cm, and the terminal ring (32) and the contact ring (33) are both located on the step (63).

5. A three-phase asynchronous motor according to claim 4, characterized in that: The insulating seat (3) is provided with a positioning component (7) for limiting the position of the electric wire and the copper wire.

6. A three-phase asynchronous motor according to claim 5, characterized in that: The positioning assembly (7) comprises a positioning plate (71) and an auxiliary plate (72); the positioning plate (71) is fixed on the insulating seat (3); the two ends of the positioning plate (71) are respectively used to contact the electric wire and the copper wire; the auxiliary plate (72) is fixed to one end of the positioning plate (71) away from the insulating seat (3) and extends in a direction away from the positioning plate (71).

7. A three-phase asynchronous motor according to claim 6, characterized in that: A placement hole (8) is provided on the side wall of the junction box (2), a shock-absorbing sleeve (81) is embedded in the placement hole (8), a clamping groove (82) is provided on the shock-absorbing sleeve (81), and the electric wire passes through the clamping groove (82).

8. A three-phase asynchronous motor according to any one of claims 1 to 7, characterized in that: A plurality of heat sinks (12) are fixedly connected to the outer wall of the housing (1).

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