CN219938094U - Junction box and motor with same - Google Patents

Abstract

The utility model discloses a junction box and a motor with the same. The junction box comprises a main junction box, a junction head and a junction assembly. The main junction box is surrounded to form a cavity; the connector lug is arranged on the side wall of the main junction box; the wiring assembly comprises a wiring row and wiring terminals, the wiring row is arranged on the side wall of the main wiring box, the first end of the wiring row extends into the cavity, the second end of the wiring row opposite to the first end extends out of the main wiring box, and the first end and the second end of the wiring row are both provided with the wiring terminals. The utility model can solve the problems of difficult wiring process, small air circulation space and large size of the junction box of the motor in the prior art.

Description

Junction box and motor with same

Technical Field

The utility model relates to the technical field of wiring devices, in particular to a junction box and a motor with the same.

Background

In the motor structure, the current in the lead wire of the conventional motor is not large, but the current of the low-voltage high-speed high-power density motor is relatively large. In order to meet the limitation of the current-carrying capacity of the lead wires in the low-voltage high-speed high-power density motor, a mode of connecting a plurality of lead wires in parallel is needed.

However, the volume of the low-voltage high-speed high-power density motor is relatively small, more leads occupy more inner space of the shell, and therefore the circulation space of internal cooling air is reduced, and heat dissipation is affected; and too many leads are connected with enameled wires of the stator winding, so that the process is difficult to realize; meanwhile, the number of binding posts in the junction box is also increased, and the junction box is limited by an electric gap and a creepage distance, so that the size of the junction box is very large, and the use requirement of people on miniaturization of the motor is difficult to meet.

Disclosure of Invention

The utility model mainly aims to provide a junction box and a motor with the same, so as to solve the problems of difficult wiring process, small air circulation space and large size of the junction box of the motor in the prior art.

According to one aspect of the present utility model, there is provided a junction box comprising:

the main junction box is surrounded to form a cavity;

the connector lug is arranged on the side wall of the main junction box;

the wiring assembly comprises a wiring row and wiring terminals, the wiring row is arranged on the side wall of the main wiring box, the first end of the wiring row extends into the cavity, the second end of the wiring row opposite to the first end extends out of the main wiring box, and the first end and the second end of the wiring row are both provided with the wiring terminals.

Further, the wiring assembly further comprises a wiring board fixedly connected to the bottom surface of the main wiring box, a plurality of wiring rows are arranged, and the wiring rows are arranged on the wiring board in a penetrating mode at intervals.

Further, the wiring assembly further comprises a bracket fixedly mounted on the wiring board, and the wiring row is mounted on the bracket.

Further, the wiring row is provided with a strip hole, the strip hole extends along the length direction of the wiring row, and the wiring row is fixed on the bracket through a connecting piece penetrating through the strip hole.

Further, the wiring row comprises a copper row, the first end and the second end of the wiring row are both provided with mounting holes, and the wiring terminals are connected to the mounting holes through locking pieces.

Further, the first end and the second end of the terminal block are each provided with a plurality of the terminal blocks.

Further, the main junction box comprises a main body and a cover plate, the main body encloses to form the cavity, and the cover plate is detachably covered on the main body.

Further, a handle is arranged on the cover plate; and/or the number of the groups of groups,

a sealing gasket is arranged between the main body and the cover plate.

Further, a wiring hole communicated with the cavity is formed in the side wall of the main junction box;

the junction box further includes an auxiliary junction box provided outside the main junction box and covering the junction hole.

On the other hand, the utility model also provides a motor, which comprises the junction box.

In the utility model, since the wiring assembly is arranged on the wiring box, the wiring assembly comprises a wiring row and wiring terminals arranged at two ends of the wiring row. The wiring board is arranged, current of the low-voltage high-speed high-power density motor can be borne, the wiring board is connected with other wires, the arrangement of leads can be reduced, the occupied space of the leads is further reduced, the circulation space of internal cooling air of the wiring board is improved, the wiring board can be ensured to stably dissipate heat, the processing technology of the wiring board can be reduced, and the overall size of the wiring board is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural view of a junction box according to an embodiment of the present utility model when the junction box is at a first viewing angle;

FIG. 2 is a schematic view of a junction box according to an embodiment of the present utility model in a second view;

FIG. 3 is a front view of a junction box according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic view of a wiring assembly according to an embodiment of the present utility model in a first view;

FIG. 6 is a schematic view of a wiring assembly according to an embodiment of the present utility model in a second view;

FIG. 7 is a schematic view of a wiring assembly according to an embodiment of the present utility model in a third view;

FIG. 8 is a front view of a wiring assembly according to an embodiment of the present utility model;

fig. 9 is a front view of a wiring harness according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a main junction box; 101. a cavity; 102. a wiring hole; 103. positioning holes; 11. a main body; 12. a cover plate; 121. a handle; 20. a connector lug; 30. a wiring assembly; 31. a wiring row; 311. a slit hole; 312. a mounting hole; 32. a connection terminal; 33. a wiring board; 34. a bracket; 40. a connecting piece; 50. a fastener; 60. an auxiliary junction box; 70. a locking member; 80. a sealing gasket; 90. and (3) a sealing layer.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the authorization specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 to 4, according to an embodiment of the present utility model, a junction box is provided. The terminal block includes a main terminal block 10, a connector lug 20, and a terminal assembly 30.

Wherein the main junction box 10 encloses a cavity 101; the connector lug 20 is provided on a side wall of the main junction box 10; the wiring assembly 30 includes a wiring row 31 and a wiring terminal 32, the wiring row 31 is disposed on a side wall of the main wiring box 10, a first end of the wiring row 31 extends into the cavity 101, a second end of the wiring row 31 opposite to the first end extends out of the main wiring box 10, and the first end and the second end of the wiring row 31 are both provided with the wiring terminal 32.

When the junction box in the embodiment is actually used, the structures such as the cable can be connected with the connector lug 20 on the main junction box 10, the cable can be connected with the connecting terminal 32 at the first end of the wiring row 31 through the action of the connector lug 20, and the electric connection can be realized with the enameled wire of the motor through the action of the connecting terminal 32 at the second end of the wiring row 31.

In the present utility model, since the terminal block is provided with the terminal assembly 30, the terminal assembly 30 includes the terminal bar 31 and the terminal terminals 32 provided at both ends of the terminal bar 31. The arrangement of the wiring row 31 can bear the current of the low-voltage high-speed high-power density motor, and is connected with other wires through the wiring terminal 32, so that the arrangement of the lead wires can be reduced, the occupied space of the lead wires is further reduced, the circulation space of internal cooling air of the wiring box is improved, the wiring box is ensured to be capable of stably radiating, the processing technology of the wiring box can be reduced, and the overall size of the wiring box is reduced.

Specifically, the main junction box 10 in the present embodiment includes a main body 11 and a cover plate 12, the main body 11 encloses a cavity 101, and the cover plate 12 is detachably covered on the main body 11 by a fastener 50. In the present utility model, the fastener 50 may be a bolt, a screw, a pin, or a buckle, and the case of the fastener 50 is shown in fig. 1 of the present utility model. In the actual use process, the fastening members 50 are arranged along the outer periphery of the cover plate 12, and the cover plate 12 can be removed from the main body 11 by removing the fastening members 50, and at this time, the connection and maintenance of the internal circuit of the junction box can be performed. The cover plate 12 is provided with the handle 121, so that the cover plate 12 can be conveniently moved, and the cover plate is simple in structure and convenient to operate. The number of the handles 121 may be one, or may be two or more, and the case where the number of the handles 121 is two is shown in fig. 1 of the present utility model. In actual installation, the handle 121 may be connected to the cover plate 12 through a circular hole reserved on the cover plate 12, or may be fixed to the cover plate 12 by welding, clamping, or other deformation methods under the concept of the present utility model, which are all within the scope of the present utility model.

Further, a gasket 80 is further provided between the main body 11 and the cover plate 12 in the present embodiment, and by the action of the gasket 80, a gap between the main body 11 and the cover plate 12 can be sealed to prevent dust or water from entering the inside of the junction box. Alternatively, the gasket 80 may be a rubber pad or a silicone pad or the like.

In the present utility model, the main body 11 is a rectangular box-shaped structure, and the rectangular box-shaped structure includes 5 side walls, and the 5 side walls can be integrally formed and arranged, or can be fixed by welding, bonding, screwing, etc. after being separately arranged, so long as other deformation modes under the concept of the present utility model are all within the scope of the present utility model.

Of course, in other embodiments of the present utility model, the body 11 may also be provided in the form of a cylinder, an oval body, or other shaped cylinder.

Further, the cover 12 in this embodiment is a plate-shaped structure, and the top surface of the plate-shaped structure is provided with the handle 121 to facilitate the movement of the cover 12.

In this embodiment, a structure such as a grounding copper bar may be further disposed in the cavity 101, and the grounding copper bar may be fixed in the cavity 101 of the main junction box 10 by a structure such as a bolt, a screw, a pin, or a buckle during actual installation.

Further, in the present embodiment, there are a plurality of connectors 20, and a plurality of connectors 20 are disposed on the side wall of the main junction box 10 at intervals, so as to facilitate connection of a plurality of cables. Alternatively, the connector lug 20 in the present embodiment may be provided in two, three or more, and the case where the connector lug 20 is three is shown in fig. 1 to 4 in the present embodiment. Illustratively, the connector lug 20 in this embodiment is a stainless steel gram head, which has high structural strength and facilitates connection of cables. The three terminals 20 may be arranged on the side wall of the main body 11 in a triangle shape, or may be arranged on the side wall of the main body 11 in a straight line shape, and any other modification manner is within the scope of the present utility model.

As shown in fig. 5 to 8, the wiring assembly 30 in this embodiment further includes a wiring board 33, the wiring board 33 is fixedly connected to the bottom surface of the main junction box 10, the number of wiring rows 31 is plural, and the plural wiring rows 31 are penetrated through the wiring board 33 at intervals. By the action of the wiring board 33, the wiring line 31 can be supported and installed, the assembly process of the wiring box can be simplified, and the production cost of the wiring box can be reduced. In the utility model, the plurality of wiring rows 31 can meet the high current requirement of the low-voltage high-speed high-power density motor, further reduce the arrangement of leads in the junction box and increase the air flow space in the junction box.

In order to facilitate the installation of the terminal block 33, the bottom of the terminal block is provided with a positioning hole 103. In actual assembly, the wiring board 33 may be fixed at the positioning hole 103 by a bolt, a screw, or the like. After the wiring board 33 is installed, a sealing layer 90 is adhered to the bottom surface of the wiring board 33, so that a gap between the wiring board 33 and the wiring row 31 can be sealed, the sealing performance of the wiring box is improved, and meanwhile, the damping function can be achieved. Alternatively, the sealing layer 90 may be a rubber layer or a silica gel layer.

Alternatively, the wiring rows 31 in the present embodiment may be provided in two, three, or more, and the case where the wiring rows 31 are three is shown in fig. 5 to 8 in the present embodiment.

Further, the wiring assembly 30 of the present utility model further includes a bracket 34, the bracket 34 is fixedly mounted on the wiring board 33, the wiring board 31 is mounted on the bracket 34, and the wiring board 31 can be supported by the action of the bracket 34, so that the wiring board 31 is supported vertically on the wiring board 33.

Alternatively, the bracket 34 in this embodiment may be a supporting block or a bracket structure formed by a plurality of supporting blocks, so long as it is any other structure capable of vertically supporting the wiring row 31 on the wiring board 33, and the present utility model is not particularly limited.

As shown in fig. 5 to 9, the wiring line 31 in the present embodiment is provided with a long hole 311, the long hole 311 extends along the length direction of the wiring line 31, and the wiring line 31 is fixed on the bracket 34 by a connecting member 40 penetrating the long hole 311. When the wiring row 31 is actually assembled, the wiring row 31 can be locked at different heights by adjusting the position of the connecting piece 40 in the length direction of the strip hole 311, so that the mounting and the use are more convenient.

Illustratively, the connecting member 40 in the present embodiment may be a connecting bolt, a connecting screw, or the like. In order to improve the installation stability of the wiring row 31, the strip holes 311 and the connecting pieces 40 are arranged in a plurality, and the wiring row 31 is installed on the bracket 34 through the connecting pieces 40, so that the structure is firmer. Alternatively, the connecting members 40 may be two, three or more.

Further, the wiring board 31 in this embodiment includes a copper board, and has a simple structure and low cost. The first end and the second end of the wiring row 31 are both provided with mounting holes 312, and when in actual mounting, the wiring terminals 32 are connected to the mounting holes 312 through the locking members 70, and after the mounting is completed, the positions of the wiring terminals 32 are fixed, so that the vertical movement cannot occur. The locking member 70 may be a locking bolt, a locking screw, etc., and the drawings of the present utility model show the case where the locking member 70 is a locking bolt.

Further, the first end and the second end of the wiring block 31 in the present embodiment are each provided with a plurality of wiring terminals 32, so as to facilitate connection of a plurality of wires. Alternatively, the connection terminal 32 is a DT-type connection terminal. In this embodiment, the plurality of mounting holes 312 located at the first end of the wiring row 31 may be provided, and the plurality of mounting holes 312 may be sequentially arranged along the height direction of the wiring row 31, so that the plurality of wiring terminals 32 may be mounted. The plurality of mounting holes 312 at the second end of the wire bar 31 may be provided, and the plurality of mounting holes 312 may be sequentially arranged in the width direction of the wire bar 31, and the plurality of wire terminals 32 may be mounted so as to be connected with the enamel wire.

Further, the side wall of the main junction box 10 in the present embodiment is provided with a junction hole 102 communicating with the cavity 101; the junction box further includes an auxiliary junction box 60, which auxiliary junction box 60 is disposed outside the main junction box 10 and covers the junction hole 102, and when wires need to be connected, the wires can pass through the junction hole 102 into the cavity 101 to be connected with the junction terminals 32 on the junction assembly 30. In actual installation, the auxiliary junction box 60 can be used for connecting with sensors for stator temperature measurement, bearing temperature measurement and the like.

Alternatively, the auxiliary junction box 60 in the present embodiment is a rectangular parallelepiped structure having an overall volume smaller than that of the main junction box 10. In actual processing, the wiring holes 102 are located on the side walls of the main junction box 10, and the auxiliary junction box 60 may be fixed to the side walls of the main junction box 10 by means of bolts, screws, or pins. After the auxiliary junction box 60 is installed, the junction hole 102 can be just covered, so that the appearance integrity and the tightness of the whole junction box can be ensured.

In other embodiments of the present utility model, the auxiliary junction box 60 may be omitted, and the main junction box 10 may be larger, so long as other modifications are within the scope of the present utility model.

The junction box disclosed by the utility model has the advantages that the electric gap and the creepage distance meet the requirements of general safety requirements of small and medium-sized rotating motors in GB 14711-2013, and the sectional area design of the copper bar completely meets the current-carrying capacity requirement of 1500A.

The serial number 30DT type binding post can be directly connected with the enameled wire of motor winding coil, adopts the hot melt welding mode during the actual connection, and is firm reliable, and the contact is good. Meanwhile, the mode omits a lead wire of a conventional product, saves materials, reduces cost, and also saves more space for cooling the air passage, thereby being beneficial to shortening the length of the motor.

On the other hand, the utility model also provides a motor which comprises the junction box in the embodiment, and therefore, the motor comprises all technical effects of the junction box. Due to the arrangement of the wiring row 31 of the junction box, the low-voltage high-speed high-power density motor can bear the current, and the wiring row is connected with other wires through the wiring terminal 32, so that the arrangement of the leads can be reduced, the occupied space of the leads is further reduced, the circulation space of internal cooling air of the junction box is improved, the junction box can be ensured to stably dissipate heat, the processing technology of the junction box can be reduced, and the overall size of the junction box is reduced.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A junction box, comprising:

the main junction box (10), the main junction box (10) encloses and forms a cavity (101);

a terminal (20), the terminal (20) being provided on a side wall of the main junction box (10);

the wiring assembly (30), wiring assembly (30) include wiring row (31) and binding post (32), wiring row (31) set up on the lateral wall of main terminal box (10), just the first end of wiring row (31) stretch into in cavity (101), the second end of wiring row (31) with first end is relative stretch out in main terminal box (10), the first end of wiring row (31) with the second end all is provided with binding post (32).

2. The junction box according to claim 1, wherein the junction assembly (30) further comprises a junction plate (33), the junction plate (33) is fixedly connected to the bottom surface of the main junction box (10), the number of the junction rows (31) is plural, and the plurality of the junction rows (31) are penetrated on the junction plate (33) at intervals.

3. The junction box according to claim 2, wherein the junction assembly (30) further comprises a bracket (34), the bracket (34) being fixedly mounted on the junction plate (33), the wiring row (31) being mounted on the bracket (34).

4. A terminal block according to claim 3, wherein the wiring row (31) is provided with a strip hole (311), the strip hole (311) extends along the length direction of the wiring row (31), and the wiring row (31) is fixed on the bracket (34) through a connecting piece (40) penetrating through the strip hole (311).

5. The junction box according to claim 1, wherein the wiring row (31) comprises a copper row, the first end and the second end of the wiring row (31) are each provided with a mounting hole (312), and the wiring terminal (32) is connected to the mounting holes (312) by a locking member (70).

6. Terminal block according to claim 5, characterized in that the first end and the second end of the terminal block (31) are each provided with a plurality of the terminal blocks (32).

7. Junction box according to claim 1, characterized in that said main junction box (10) comprises a main body (11) and a cover plate (12), said main body (11) enclosing said cavity (101), said cover plate (12) being removably arranged on said main body (11).

8. Junction box according to claim 7, characterized in that the cover plate (12) is provided with a handle (121); and/or the number of the groups of groups,

a sealing gasket (80) is arranged between the main body (11) and the cover plate (12).

9. Junction box according to any one of claims 1 to 8, characterized in that the side wall of the main junction box (10) is provided with a junction hole (102) communicating with the cavity (101);

the junction box further includes an auxiliary junction box (60), the auxiliary junction box (60) being disposed outside the main junction box (10) and covering the junction hole (102).

10. An electric machine, characterized in that it comprises a junction box according to any one of claims 1 to 9.