Lead structure of alternating current motor

Abstract

The utility model discloses a lead structure of an alternating current motor, which relates to the technical field of motors and comprises a lead box. A plurality of connector lugs are arranged on one side of the lead box, a plurality of wiring pipes are arranged on the other side of the lead box, a motor wiring shell is arranged on the outer sides of the connector lugs, sliding plates connected with the sliding plates in a sliding mode are arranged on the two sides of the motor wiring shell, the sliding plates are welded to the lead box, and then the sliding plates and the motor wiring shell are locked through bolts. According to the utility model, the two sides are connected through different connection modes, for the motor and one side of the lead box which are not normally opened, the connector lug is connected with the motor, a circuit is connected with a circuit in the lead box after penetrating through the protection wire pipe, and the circuit is in sliding connection with the sliding plate through the motor wiring shell and is locked, so that the circuit is completely protected on the inner side; the other side is fixed in the wiring tube through the line of the lead box, and the cable on the outer side is inserted into the wiring tube, so that the connection part can be protected at the inner side of the external wiring shell, and the sealing performance and the insulating performance are improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of motors, and particularly relates to a lead structure of an AC motor. Background Technique

[0002] In an AC motor, the insulation sealing performance, insulation integrity, heat dissipation and flame retardancy at the connection between the cable and the lead are very important. If the insulation sealing is poor, the insulation is easily affected by moisture, which will cause the insulation resistance to decrease, especially for motors with moisture-proof requirements; poor insulation integrity will have a certain impact on the dielectric loss, partial discharge and polarization index of the motor, resulting in a decline in the overall insulation performance of the motor and reducing the service life of the motor. When the inner side has a high temperature, the load of the lead and the cable will increase, creating potential safety hazards.

[0003] Chinese Utility Model Publication No. CN 205039639 U discloses a connection structure between a cable and a lead of an AC motor. One end of the lead is inserted into the core wire of the cable, and the connection between the cable and the lead is welded together by soldering; an insulation sealing structure is arranged at the soldering joint of the cable and the lead. The insulation sealing structure sequentially includes an inner insulation layer and an outer insulation layer from inside to outside. The inner insulation layer sequentially includes a self-adhesive silicone rubber tape layer and a first mica tape layer from inside to outside. The outer insulation layer sequentially includes a second mica tape layer and a heat-shrinkable polyester film layer from inside to outside; a protective cap is sleeved at the end of the cable, the protective cap is tied tightly at the end of the cable through a nylon buckle belt, and the connection between the protective cap and the cable is sealed by winding with a self-adhesive silicone rubber tape;

[0004] For the above connection structure between the cable and the lead of an AC motor, soldering is used for the welding of the cable and the lead, and the connection is sealed by manually wrapping insulating materials. The cable and the stator are immersed in paint as a whole to improve the sealing and insulation performance. However, if the motor is used outdoors for a long time, the probability of paint explosion and oxidation will increase, and the service life cannot be improved. Secondly, the heat dissipation performance will be greatly reduced, resulting in an excessive load and potential safety hazards. Therefore, we provide a lead structure of an AC motor. Through different protection methods on both sides, after the connection between the motor and the lead box, it is almost no longer opened. The connection between the motor and the lead box is protected by buckling the protection pipe, and the other side is connected to the cable. The cable is fixed by the cooperation of the wire pipe and the pressing bolt, and is protected by the outer wiring shell on the outside to improve its protection effect. The heat dissipation effect of the lead box is better, so that the temperature of the inner side circuit can be reduced, effectively making up for the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a lead structure of an AC motor to solve the problems raised in the background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] A lead structure for an AC motor, comprising a lead box; a plurality of terminal heads are arranged on one side of the lead box, and a plurality of terminal tubes are arranged on the other side. Among them, a motor terminal shell is arranged outside the terminal head. Slide plates slidably connected to the slide plates are arranged on both sides of the motor terminal shell, and the slide plates are welded to the lead box. Secondly, the slide plates and the motor terminal shell are locked by bolts; an external terminal shell is arranged outside the terminal tube, and a circular through hole for leading the terminal tube is provided in the external terminal shell.

[0008] As a further technical solution of the present utility model, a plurality of circular holes are provided in the motor terminal shell, and a protective wire tube is welded to each circular hole.

[0009] As a further technical solution of the present utility model, the external terminal shell is welded to the lead box, and a cover plate is movably connected to the external terminal shell through a rotating shaft. A plurality of pressing bolts are arranged below the cover plate, and the pressing bolts are threadedly connected to the terminal tube.

[0010] As a further technical solution of the present utility model, a plurality of cooling fans are cooperatively connected to the top of the lead box.

[0011] As a further technical solution of the present utility model, the inner side of the lead box is hollow, and a plurality of heat dissipation holes are provided on both sides.

[0012] As a further technical solution of the present utility model, the lead box is fixed to the bottom plate by bolts, and the bottom plate is fixed to the motor housing by bolts.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] In the present utility model, the two sides are connected by different connection methods. For the side of the motor and the lead box that are not often opened, they are connected to the motor through the terminal head, the line passes through the protective wire tube and is then connected to the line inside the lead box, and then the motor terminal shell is slidably connected to the slide plate and locked, so that it is completely protected inside. On the other side, the line of the lead box is fixed in the terminal tube, and the external cable is inserted into the terminal tube, so that the connection part can be protected inside the external terminal shell, thereby improving the sealing performance and insulation performance;

[0015] In the present utility model, the protective wire tube facilitates the penetration and protection of the line. After the cover plate is opened, it is convenient to screw the pressing bolt to press and connect the external line and the cable inside the lead box. After closing the cover plate, a better protection effect is achieved;

[0016] In the present utility model, the cooling fan can extract the temperature on the outside and send it into the inside of the lead box. The hot air inside will be discharged through the cooling holes on both sides, reducing the temperature inside. The bottom plate is convenient for carrying and fixing. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0018] Figure 2 In the present utility model Figure 1 is a schematic diagram of another perspective.

[0019] Figure 3 In the present utility model Figure 1 is a partial enlarged view of part A.

[0020] Figure 4 In the present utility model Figure 2 is a partial enlarged view of part B.

[0021] Figure 5 In the present utility model Figure 2 is the front view.

[0022] Figure 6 In the present utility model Figure 5 is a cross-sectional view taken along line C-C.

[0023] In the figures: 1 - lead box, 2 - cooling hole, 3 - cooling fan, 4 - sliding plate, 5 - motor terminal housing, 6 - protective wire tube, 7 - terminal, 8 - bottom plate, 9 - external terminal housing, 10 - wiring tube. Specific Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-6 , in the embodiment of the present utility model, a lead structure of an AC motor includes a lead box 1; a plurality of terminals 7 are provided on one side of the lead box 1, and a plurality of wiring tubes 10 are provided on the other side. Among them, a motor terminal housing 5 is provided outside the terminal 7, and sliding plates connected to the sliding plate 4 are provided on both sides of the motor terminal housing 5, and the sliding plate 4 is welded to the lead box 1. Secondly, the sliding plate 4 and the motor terminal housing 5 are locked by bolts; an external terminal housing 9 is provided outside the wiring tube 10, and the external terminal housing 9 is provided with a circular through hole convenient for leading the wiring tube 10.

[0026] By adopting the above technical solution, the two sides are connected by different connection methods. For the side of the motor and the lead box 1 that is not often opened, it is connected to the motor through the terminal 7, and the line passes through the protective conduit 6 and then is connected to the line inside the lead box 1. Then, it is slidably connected to the slide plate 4 and locked through the motor terminal housing 5, so that it is completely protected inside. On the other side, the line of the lead box 1 is fixed in the connection pipe 10, and the outer cable is inserted into the connection pipe 10, so that the connection part can be protected inside the outer connection housing 9, thereby improving the sealing performance and insulation performance.

[0027] In this embodiment, a plurality of circular holes are formed in the motor terminal housing 5, and a protective conduit 6 is welded to each circular hole.

[0028] Furthermore, the outer connection housing 9 is welded to the lead box 1, and a cover plate 13 is movably connected to the outer connection housing 9 through a rotating shaft. A plurality of pressing bolts 11 are arranged below the cover plate 13, and the pressing bolts 11 are threadedly connected to the connection pipe 10.

[0029] By adopting the above technical solution, the protective conduit 6 facilitates the penetration and protection of the line. After the cover plate 13 is opened, it is convenient to screw the pressing bolt 11 to press-connect the outer line and the cable inside the lead box 1. After the cover plate 13 is closed, a better protection effect is achieved.

[0030] In this embodiment, a plurality of cooling fans 3 are connected in a matching manner to the top of the lead box 1.

[0031] Furthermore, the inner side of the lead box 1 is hollow, and a plurality of heat dissipation holes 2 are formed on both sides.

[0032] Furthermore, the lead box 1 is fixed to the bottom plate 8 through bolts, and the bottom plate 8 is fixed to the motor housing through bolts.

[0033] By adopting the above technical solution, the cooling fans 3 can extract the temperature outside and send it into the inner side of the lead box 1. The hot air inside will be discharged through the heat dissipation holes 2 on both sides, reducing the temperature inside, and the bottom plate 8 facilitates the bearing and fixing.

[0034] The working principle of the present utility model is as follows: When in use, it is connected on both sides through different connection methods. For the side of the motor and the lead box 1 that is not often opened, it is connected to the motor through the terminal 7, and the line passes through the protective conduit 6 and then is connected to the line inside the lead box 1. Then, it is slidably connected to the slide plate 4 through the motor terminal housing 5 and locked, so that it is completely protected inside. On the other side, the line of the lead box 1 is fixed in the wiring pipe 10, and the outer cable is inserted into the wiring pipe 10, so that the connection part can be protected inside the outer wiring housing 9, thereby improving the sealing performance and insulation performance; the protective conduit 6 facilitates the penetration and protection of the line. After the cover plate 13 is opened, it is convenient to screw the pressure bolt 11 to press-connect the outer line and the cable inside the lead box 1. After the cover plate 13 is closed, a better protection effect is achieved; the cooling fan 3 can extract the temperature outside and send it into the inside of the lead box 1, and the hot air inside will be discharged through the cooling holes 2 on both sides, reducing the temperature inside. The bottom plate 8 facilitates the bearing and fixing.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0036] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lead wire structure of an AC motor, characterized in that: It includes a lead box (1); a plurality of terminal heads (7) are arranged on one side of the lead box (1), and a plurality of terminal tubes (10) are arranged on the other side. Among them, a motor terminal housing (5) is arranged outside the terminal head (7). Slide plates that are slidably connected to the slide plate (4) are arranged on both sides of the motor terminal housing (5), and the slide plate (4) is welded to the lead box (1). Secondly, the slide plate (4) and the motor terminal housing (5) are locked by bolts; an external terminal housing (9) is arranged outside the terminal tube (10), and a circular through hole facilitating the lead-out of the terminal tube (10) is provided in the external terminal housing (9).

2. The lead structure of an AC motor according to claim 1, characterized in that: A plurality of circular holes are provided in the motor terminal housing (5), and a protective wire tube (6) is welded to each circular hole.

3. The lead structure of an AC motor according to claim 1, characterized in that: The external terminal housing (9) is welded to the lead box (1), and a cover plate (13) is movably connected to the external terminal housing (9) through a rotating shaft. A plurality of pressing bolts (11) are arranged below the cover plate (13), and the pressing bolts (11) are threadedly connected to the terminal tube (10).

4. The lead wire structure of an AC motor according to claim 1, characterized in that: A plurality of cooling fans (3) are connected in a matching manner to the top of the lead box (1).

5. The lead wire structure of an AC motor according to claim 1, characterized in that: The inner side of the lead box (1) is hollow, and a number of cooling holes (2) are provided on both sides.

6. The lead wire structure of an AC motor according to claim 1, characterized in that: The lead box (1) is fixed to the bottom plate (8) by bolts, and the bottom plate (8) is fixed to the motor housing by bolts.

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