Three-phase asynchronous motor easy to wire

Abstract

The utility model discloses an easy-wiring three-phase asynchronous motor, which relates to the technical field of three-phase asynchronous motors, and comprises a motor main body consisting of a shell main body, a junction box, a box cover and a terminal stud, and a semicircular wire duct, and the semicircular wire duct with an open top does not interfere with the movement of a wire. The position of the wire on the inner side of the junction box is adjusted; clamping assemblies are distributed on one side of the outer wall of the junction box and one side of the outer wall of the box cover. According to the utility model, through the arrangement of the semicircular wire duct and the semicircular bottom block, when a wire is connected with the terminal stud, compared with a traditional structure in which the wire needs to pass through a circular threading hole, the wire does not need to be butted with the semicircular wire duct and the semicircular bottom block in a penetrating manner, and the whole wire is not limited, so that the position of the wire can be conveniently adjusted; therefore, the connection convenience and efficiency of the wire and the terminal stud are improved, meanwhile, the stable clamping and sealing of the wire can be realized through the cooperation of other parts of the clamping assembly, and the overall operation is simple, convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase asynchronous motors, in particular to a three-phase asynchronous motor that is easy to wire. Background Technique

[0002] A three-phase asynchronous motor is a type of induction motor and is a class of motors powered by simultaneously connecting to a 380V three-phase alternating current (with a 120-degree phase difference). Since the rotor of the three-phase asynchronous motor rotates in the same direction as the stator rotating magnetic field but at a different speed, there is a slip rate, so it is called a three-phase asynchronous motor.

[0003] A wiring box is provided on the outer side of the motor body of the three-phase asynchronous motor. The wiring box is provided with wiring terminals that are energized with the internal coils of the motor body. When connecting external wires to the wiring terminals, they need to first pass through the wire holes on the wiring box and then be connected to the corresponding wiring terminals respectively. However, since the wiring box usually has a small volume and due to the limitation of the wire holes, it is not easy to adjust the position of the wires inside the wiring box, thus affecting the convenience of wiring. Based on this, a three-phase asynchronous motor that is easy to wire is provided. Content of the Utility Model

[0004] The purpose of the utility model is to provide a three-phase asynchronous motor that is easy to wire in order to solve the problems in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A three-phase asynchronous motor that is easy to wire, including a motor main body composed of a housing main body, a wiring box, a box cover, and wiring terminals. The wiring box is fixed on the outer side of the housing main body. The box cover is fixed on the upper surface of the wiring box by bolts. The wiring terminals are installed inside the wiring box and are connected to the internal coils of the housing main body. A semi-circular wire groove is opened on one side of the wiring box. The semi-circular wire groove is used for external wires to penetrate to the outside of the wiring box. By making the top of the semi-circular wire groove open, it does not interfere with the movement of the wires, and is used to realize the position adjustment of the wires inside the wiring box;

[0006] Clamping components are distributed on one side of the outer walls of the wiring box and the box cover. The clamping components are used to clamp and fix three wires;

[0007] The clamping components include a limiting unit and a sealing unit;

[0008] The limiting unit is used to realize the limiting and fixing of the wires;

[0009] The sealing unit is used to perform a sealing operation between the limiting unit and the wires.

[0010] As a further scheme of the utility model: The limiting unit includes a semi-circular bottom block, a positioning arc groove, a top block, a semi-circular plugging block, and a clamping arc groove;

[0011] The semi-circular bottom block is fixed to one side of the outer wall of the junction box, and the inner side of the semi-circular bottom block is aligned with the semi-circular wire groove. Three positioning arc grooves are provided and are annularly distributed on the inner side of the semi-circular bottom block. The three positioning arc grooves are used to provide space for the positioning and placement of three wires;

[0012] The top block is fixed to one side of the outer wall of the box cover and is located at the top of the semi-circular bottom block, and is used to block the wiring end and the upper port of the semi-circular bottom block;

[0013] The semi-circular blocking block is integrally formed at the bottom of the top block. Three clamping arc grooves are provided and are annularly distributed on the outer side of the semi-circular blocking block. The semi-circular blocking block is used to block the inner cavity area of the semi-circular bottom block, and the three clamping arc grooves are respectively used to clamp and limit the outer sides of the three wires.

[0014] As a further solution of the present utility model: The sealing unit includes an arc-shaped sealing rubber pad and a shrinkage groove;

[0015] The arc-shaped sealing rubber pads are respectively adhesively fixed to the inner sides of the positioning arc grooves and the clamping arc grooves. The shrinkage groove is integrally formed on the inner side of the arc-shaped sealing rubber pad and penetrates through the outer side of the arc-shaped sealing rubber pad;

[0016] The inner diameter of the arc-shaped sealing rubber pad is smaller than the outer diameter of the wire. When the wire is clamped and fixed, the wire squeezes the arc-shaped sealing rubber pad to deform, and the arc-shaped sealing rubber pad closely fits on the outer side of the wire, realizing the clamping of the wire and the sealing of the outer side of the wire at the same time.

[0017] As a further solution of the present utility model: The open end of the shrinkage groove faces away from the side of the junction box of the semi-circular bottom block and the semi-circular blocking block, and a plurality of evenly distributed arc-shaped sealing rubber pads are arranged along the horizontal direction on the inner sides of the positioning arc grooves and the clamping arc grooves.

[0018] As a further solution of the present utility model: The junction box, the semi-circular wire groove, the semi-circular bottom block, and the positioning arc groove are integrally formed by a casting process.

[0019] As a further solution of the present utility model: The box cover, the top block, the semi-circular blocking block, and the clamping arc groove are integrally formed by a casting process.

[0020] As a further solution of the present utility model: The arc-shaped sealing rubber pad and the shrinkage groove are integrally formed by a rubber injection molding process.

[0021] Compared with the prior art, the beneficial effects of the present utility model are:

[0022] By setting a semi-circular wire groove and a semi-circular bottom block, when connecting the wire to the wiring terminal, compared with the traditional structure where the wire needs to pass through a circular wire passing hole, the wire at this time does not need to consider the penetration and docking with the semi-circular wire groove and the semi-circular bottom block, and the whole wire has no restrictions. In this way, the position of the wire can be adjusted conveniently, thereby improving the connection convenience and efficiency between the wire and the wiring terminal. At the same time, through the cooperation of other parts of the clamping assembly, the wire can be firmly clamped and sealed, and the overall operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of the present utility model;

[0024] Figure 2 is a schematic view of the split state of the lid and the junction box of the present utility model;

[0025] Figure 3 is a schematic view of the internal structure of the junction box of the present utility model;

[0026] Figure 4 is a schematic view of the structure of the top block and the semi-circular plugging block of the present utility model.

[0027] In the figure: 1. Motor main body; 101. Outer shell main body; 102. Junction box; 103. Lid; 104. Wiring terminal; 105; Semi-circular wire groove; 2. Clamping assembly; 201. Semi-circular bottom block; 202. Positioning arc groove; 203. Top block; 204. Semi-circular plugging block; 205. Clamping arc groove; 206. Arc-shaped sealing gasket; 207. Shrinkage groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 to 4, in the embodiment of the present utility model, a three-phase asynchronous motor that is easy to wire includes a motor main body 1 composed of a housing main body 101, a junction box 102, a box cover 103, and a wiring terminal 104. The junction box 102 is fixed to the outside of the housing main body 101. The box cover 103 is fixed to the upper surface of the junction box 102 by bolts. The wiring terminal 104 is installed inside the junction box 102 and is connected to the internal coil of the housing main body 101. A semi-circular wire groove 105 is provided on one side of the junction box 102. The semi-circular wire groove 105 is used for an external wire to penetrate to the outside of the junction box 102. The semi-circular wire groove 105 with an open top does not interfere with the movement of the wire, and is used to realize the position adjustment of the wire inside the junction box 102;

[0030] Clamping components 2 are distributed on one side of the outer walls of the junction box 102 and the box cover 103. The clamping components 2 are used to clamp and fix three wires. The clamping components 2 include a limiting unit and a sealing unit. The limiting unit is used to realize the limiting and fixing of the wires, and the sealing unit is used to perform a sealing operation between the limiting unit and the wires;

[0031] The limiting unit includes a semi-circular bottom block 201, a positioning arc groove 202, a top block 203, a semi-circular plugging block 204, and a clamping arc groove 205;

[0032] The semi-circular bottom block 201 is fixed to one side of the outer wall of the junction box 102, and the inner side of the semi-circular bottom block 201 is aligned with the semi-circular wire groove 105. Three positioning arc grooves 202 are provided and are annularly distributed on the inner side of the semi-circular bottom block 201. The three positioning arc grooves 202 are used to provide space for the positioning and placement of the three wires; The top block 203 is fixed to one side of the outer wall of the box cover 103 and is located at the top of the semi-circular bottom block 201, and is used to block the wiring terminal 104 and the upper port of the semi-circular bottom block 201; The semi-circular plugging block 204 is integrally formed at the bottom of the top block 203. Three clamping arc grooves 205 are provided and are annularly distributed on the outer side of the semi-circular plugging block 204. The semi-circular plugging block 204 is used to fill the inner cavity area of the semi-circular bottom block 201, and the three clamping arc grooves 205 are respectively used to clamp and limit the outer sides of the three wires;

[0033] The sealing unit includes an arc-shaped sealing gasket 206 and a shrinkage groove 207;

[0034] The arc-shaped sealing gasket 206 is respectively adhesively fixed to the inner sides of the positioning arc groove 202 and the clamping arc groove 205. The shrinkage groove 207 is integrally formed on the inner side of the arc-shaped sealing gasket 206 and penetrates through the outer side of the arc-shaped sealing gasket 206; The inner diameter of the arc-shaped sealing gasket 206 is smaller than the outer diameter of the wire. When clamping and fixing the wire, the wire squeezes the arc-shaped sealing gasket 206 to deform, and the arc-shaped sealing gasket 206 closely fits on the outer side of the wire, realizing the clamping of the wire and the sealing of the outer side of the wire at the same time.

[0035] In this embodiment: When performing wiring operations, the connecting screws between the box cover 103 and the junction box 102 can be removed first, and then the box cover 103, the top block 203, and the semi-circular sealing block 204 are removed as a whole. At this time, the upper ports of the semi-circular wire groove 105 and the semi-circular bottom block 201 are in an open state;

[0036] After that, the wires can be connected to their respective corresponding wiring terminals 104 (it should be noted that: on the outside of the traditional wiring terminal 104, a threaded groove is formed, and an annular metal sheet is crimped on the wire end. By sleeving the annular metal sheet on the wiring terminal 104 and then tightening it with a nut to tightly press on the annular metal sheet, the connection between the wire and the wiring terminal 104 is completed). During this process, compared with the structure where the traditional wire needs to pass through a circular wire passing hole, at this time, the wire does not need to consider the through connection with the semi-circular wire groove 105, and the whole wire has no restrictions. In this way, the position of the wire can be adjusted conveniently, thereby improving the connection convenience and efficiency between the wire and the wiring terminal 104;

[0037] After the wires are connected to the wiring terminals 104, the three wires are passed through the inside of the semi-circular wire groove 105 and the semi-circular bottom block 201 to the outside of the semi-circular bottom block 201, and at the same time, they can be clamped into the positioning arc grooves 202 at the corresponding positions according to the positions of the three wires;

[0038] After that, the box cover 103 is covered on the top of the junction box 102. At this time, the top block 203 is covered on the top of the semi-circular bottom block 201, and the semi-circular sealing block 204 is clamped into the inside of the semi-circular bottom block 201. Its clamping arc groove 205 is pressed on the outside of the wire. The arc-shaped sealing gaskets 206 inside the positioning arc groove 202 and the clamping arc groove 205 are closely attached to the outer surface of the wire. The arc-shaped sealing gasket 206 deforms under force, so that it is closely attached to the wire and has a large frictional force at the same time. In this way, the clamping and fixing of the wire are realized, and at the same time, a good sealing performance is achieved between the clamping component 2 and the wire, thus ensuring the good sealing of the internal space of the junction box 102.

[0039] Please refer specifically to Figures 1 to 4 , the opening end of the shrinkage groove 207 faces away from the side of the semi-circular bottom block 201 and the semi-circular sealing block 204 away from the junction box 102, and a plurality of evenly distributed arc-shaped sealing gaskets 206 are arranged along the horizontal direction on the inner sides of the positioning arc groove 202 and the clamping arc groove 205.

[0040] In this embodiment: Through the deformation of the plurality of arc-shaped sealing gaskets 206 to be closely attached to the wire, the clamping force and frictional resistance on the wire are further improved.

[0041] Please refer specifically to Figures 1 to 4 , the junction box 102, the semi-circular wire groove 105, the semi-circular bottom block 201, and the positioning arc groove 202 are integrally formed by a casting process;

[0042] The lid 103, the top block 203, the semi-circular plugging block 204, and the clamping arc groove 205 are integrally formed by a casting process;

[0043] The arc-shaped sealing gasket 206 and the shrinkage groove 207 are integrally formed by a rubber injection molding process.

[0044] In this embodiment: Through the above structure, the production and processing technology of the clamping assembly 2 is simple, which is convenient for popularization and production.

[0045] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A three-phase asynchronous motor that is easy to connect, comprising a motor body (1) consisting of a housing body (101), a junction box (102), a box cover (103), and a wiring terminal (104), wherein the junction box (102) is fixed to the outside of the housing body (101), the box cover (103) is fixed to the upper surface of the junction box (102) by bolts, and the wiring terminal (104) is installed on the inside of the junction box (102) and is connected to the internal coil of the housing body (101), characterized in that: A semicircular wire groove (105) is provided on one side of the junction box (102), and the semicircular wire groove (105) is used for allowing external wires to pass through to the outside of the junction box (102). The semicircular wire groove (105) has an open top so that it does not interfere with the movement of the wires, and is used to adjust the position of the wires inside the junction box (102); A clamping assembly (2) is distributed on one side of the outer wall of the junction box (102) and the box cover (103), and the clamping assembly (2) is used to clamp and fix three electric wires; The clamping assembly (2) comprises a limiting unit and a sealing unit; The limiting unit is used to achieve limiting fixation of the electric wire; The sealing unit is used to perform a sealing operation between the limiting unit and the electric wire.

2. A three-phase asynchronous motor that is easy to connect according to claim 1, characterized in that: The limiting unit comprises a semicircular bottom block (201), a positioning arc groove (202), a top block (203), a semicircular blocking block (204), and a clamping arc groove (205); The semicircular bottom block (201) is fixed to one side of the outer wall of the junction box (102), and the inner side of the semicircular bottom block (201) is aligned with the semicircular wire trough (105). Three positioning arc grooves (202) are provided and are arranged in a circular shape on the inner side of the semicircular bottom block (201). The three positioning arc grooves (202) are used to provide space for positioning and placing three wires. The top block (203) is fixed to one side of the outer wall of the box cover (103) and is located on the top of the semicircular bottom block (201), and is used to block the connection terminal (104) and the upper port of the semicircular bottom block (201); The semicircular blocking block (204) is integrally formed at the bottom of the top block (203); three clamping arc grooves (205) are provided and are annularly distributed and opened on the outside of the semicircular blocking block (204); the semicircular blocking block (204) is used to fill the inner cavity area of ​​the semicircular bottom block (201); and the three clamping arc grooves (205) are respectively used to clamp and limit the outer sides of three electric wires.

3. The three-phase asynchronous motor that is easy to connect according to claim 2, characterized in that: The sealing unit comprises an arc-shaped sealing rubber pad (206) and a shrinkage groove (207); The arc-shaped sealing rubber pad (206) is respectively bonded and fixed to the inner sides of the positioning arc-shaped groove (202) and the clamping arc-shaped groove (205), and the shrinkage groove (207) is integrally formed on the inner side of the arc-shaped sealing rubber pad (206) and penetrates the outer side of the arc-shaped sealing rubber pad (206); The inner diameter of the arc-shaped sealing rubber pad (206) is smaller than the outer diameter of the electric wire. When the electric wire is clamped and fixed, the electric wire squeezes the arc-shaped sealing rubber pad (206) to deform, and the arc-shaped sealing rubber pad (206) fits tightly to the outer side of the electric wire, thereby clamping the electric wire and sealing the outer side of the electric wire at the same time.

4. The three-phase asynchronous motor that is easy to connect according to claim 3 is characterized in that: The opening end of the shrinkage groove (207) faces the side of the semicircular bottom block (201) and the semicircular blocking block (204) away from the junction box (102), and a plurality of evenly distributed arc-shaped sealing rubber pads (206) are arranged in the horizontal direction on the inner sides of the positioning arc groove (202) and the clamping arc groove (205).

5. The three-phase asynchronous motor that is easy to connect according to claim 2, characterized in that: The junction box (102), the semicircular wire duct (105), the semicircular bottom block (201), and the positioning arc groove (202) are integrally formed by a casting process.

6. The three-phase asynchronous motor that is easy to connect according to claim 2, characterized in that: The box cover (103), the top block (203), the semicircular blocking block (204), and the clamping arc groove (205) are integrally formed through a casting process.

7. The three-phase asynchronous motor that is easy to connect according to claim 3, characterized in that: The arc-shaped sealing rubber pad (206) and the shrinkage groove (207) are integrally formed by a rubber injection molding process.

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