Three-phase adapter

Abstract

The utility model relates to motor technical field, especially a kind of three-phase adapter, comprising: seat, bolt and terminal retaining wall, the seat is equipped with multiple installation sites, the bolt is used to install the terminal of the three-phase outgoing line on the installation site;The terminal retaining wall is set along the outgoing line direction of the installation site, the connecting place of the terminal retaining wall and the seat is equipped with limiting slot, the limiting slot is suitable for the limiting of the terminal of the terminal.The bolt of the terminal of the terminal for fixing the soft wire connection end on the three-phase adapter in the prior art is loosened, the soft wire will take the terminal and separate from the three-phase adapter due to its elasticity, resulting in the technical problem of increasing installation difficulty and reducing installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a three-phase adapter. Background Technology

[0002] Currently, motor stator assemblies are mainly connected to external power sources in two ways: one is using rigid copper busbars for the three-phase stator outputs, which are locked onto a three-phase adapter. When connecting to an external source, the three-phase cable terminals are bolted to the adapter. This type of rigid copper busbar requires high precision in installation; if the busbar position is not precise, internal stress will exist after installation. The other method uses flexible wires for the three-phase stator outputs. Flexible wires have lower precision requirements, higher degrees of freedom, and no internal stress in the system. When the motor leaves the factory, the terminals of the flexible wire connections are locked onto the three-phase adapter. When connecting to an external source, loosening the bolts causes the flexible wires, due to their elasticity, to pull the terminals off the adapter. The flexible wires must be manually adjusted back to the locked position and then bolted back onto the adapter along with the three-phase cables, increasing installation difficulty and reducing installation efficiency. Utility Model Content

[0003] To address the technical problem in existing three-phase adapters where the bolts securing the terminals of the flexible cords loosen, causing the flexible cords to pull the terminals off the adapters due to their elasticity, thus increasing installation difficulty and reducing installation efficiency, this invention provides a three-phase adapter that solves the aforementioned technical problem.

[0004] To solve the above-mentioned technical problems, this utility model provides a three-phase adapter, including: a base body, bolts and terminal retainers. The base body is provided with multiple mounting positions, and the bolts are used to install the three-phase outgoing terminals on the mounting positions. The terminal retainers are arranged along the outgoing direction of the mounting positions, and a limiting groove is provided at the connection between the terminal retainers and the base body. The limiting groove is suitable for limiting the position of the terminals.

[0005] According to one embodiment of the present invention, the terminal retainers are arranged in groups of two, with the limiting grooves of the two terminal retainers in each group facing each other to limit the two sides of the wiring terminal.

[0006] According to one embodiment of the present invention, an elastic buckle is provided on one side of the terminal block. The elastic buckle deforms during the process of the terminal extending into the limiting groove and recovers its deformation when the terminal reaches a preset position, so as to provide a limit to the terminal in the outgoing direction.

[0007] According to one embodiment of the present invention, the elastic buckle includes a movable end, a fixed end, and a connecting rod. The movable end is connected to the fixed end through the connecting rod, and the fixed end is fixedly disposed on one side of the terminal retaining wall.

[0008] According to one embodiment of the present invention, the movable end is provided with a guide surface on the side away from the terminal block, which is suitable for the front end of the wiring terminal to slide into the mounting position.

[0009] According to one embodiment of the present invention, the movable end is provided with a limiting part adapted to the rear end of the wiring terminal on the side near the terminal block.

[0010] According to one embodiment of the present invention, the base and the terminal retainer are integrally formed.

[0011] According to one embodiment of the present invention, the bolt installs the terminal block into the mounting position through the mounting hole on the mounting position.

[0012] According to one embodiment of the present invention, an insert nut adapted to the bolt is provided on the mounting hole.

[0013] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0014] 1. The three-phase adapter of this utility model has a limiting groove at the connection between the terminal block and the base body. After the terminal is installed in the mounting position by bolts, even if the bolts locking the terminal are loosened, the limiting groove can still limit the terminal. The terminal will not be dislodged from the mounting position due to the elasticity of the connected flexible wire along the bolt installation direction. When installing external three-phase cables, manual wire management is no longer required, which reduces the installation difficulty and improves the installation efficiency.

[0015] 2. The three-phase adapter of this utility model is further provided with terminal blocks arranged in groups of two. The limiting grooves of the two terminal blocks in each group of terminal blocks are opposite each other, which further restricts the movement space of the wiring terminals and prevents the wiring terminals from coming out from the side away from a single terminal block.

[0016] 3. The three-phase adapter of this utility model is further provided with an elastic buckle on one side of the terminal block to limit the outgoing direction of the terminal. By simultaneously providing the elastic buckle and the terminal block, the terminal can be limited in multiple directions to prevent the terminal from shifting in the preset position and affecting the reliability of installing external three-phase cables.

[0017] 4. The three-phase adapter of this utility model further provides an insert nut that matches the bolt on the mounting hole of the mounting position, so as to avoid the motor vibration affecting the stability of the bolt fixing, thereby improving the reliability of the bolt fixing and the durability of the three-phase adapter. Attached Figure Description

[0018] Figure 1This is a schematic diagram showing the matching relationship between the three-phase adapter and the three-phase outgoing lines of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a three-phase adapter according to an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of a mounting position in a three-phase adapter according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram illustrating the cooperation relationship between the elastic buckle and the wiring terminal in a specific embodiment of the present invention;

[0022] Figure 5 for Figure 4 A schematic diagram of the deformation of the elastic latch when the terminal block of the embodiment is inserted into the mounting position.

[0023] In the diagram: 1-base; 11-mounting position; 111-mounting hole; 112-insert nut; 2-bolt; 3-terminal retainer; 31-limiting groove; 4-three-phase output; 41-terminal; 5-elastic buckle; 51-moving end; 511-guide surface; 512-limiting part; 52-fixed end; 53-connecting rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0030] like Figure 1-3 As shown, this embodiment provides a three-phase adapter, including: a base 1, bolts 2 and terminal retainers 3. The base 1 is provided with multiple mounting positions 11. The bolts 2 are used to install the wiring terminals 41 of the three-phase outgoing lines 4 on the mounting positions 11. The terminal retainers 3 are arranged along the outgoing direction of the mounting positions 11. The connection between the terminal retainers 3 and the base 1 is provided with a limiting groove 31, which is suitable for limiting the wiring terminals 41.

[0031] After the terminal block 41 is installed in the mounting position 11 by the bolt 2, even if the bolt 2 locking the terminal block 41 is loosened, the terminal block 41 will not be dislodged from the mounting position 11 due to the elasticity of the connected flexible wire along the installation direction of the bolt 2 because the limiting groove 31 can still limit the terminal block 41. When installing external three-phase cables, manual wire management is no longer required, which reduces the installation difficulty and improves the installation efficiency.

[0032] It should be noted that the three-phase adapter of this utility model is not only applicable to the three-phase terminal conversion of motors with stator three-phase output wire 4 being flexible wire, but also applicable to the three-phase terminal conversion of motors with stator three-phase output wire being hard copper busbar. This embodiment does not limit it in this respect.

[0033] It is understandable that as long as there is a terminal block 3 on the mounting position 11, the wiring terminal 41 can be limited to a certain extent. A vertical terminal partition can be set on the side opposite to the terminal block 3 on the mounting position 11 for isolation or protection. Alternatively, a terminal partition can be omitted according to actual needs. This embodiment does not impose any restrictions.

[0034] As a preferred technical solution in this embodiment, the terminal retainers 3 are arranged in pairs. The limiting grooves 31 of the two terminal retainers 3 in each group are opposite to each other, limiting the two sides of the wiring terminal 41, further restricting the activity space of the wiring terminal 41, and preventing the wiring terminal 41 from coming out from the side away from the single terminal retainer 3.

[0035] like Figure 2 As shown, in this preferred embodiment, a flexible buckle 5 is provided on one side of the terminal block 3. The flexible buckle 5 deforms during the process of the terminal 41 extending into the limiting groove 31 and recovers its deformation when the terminal 41 reaches the preset position, thereby providing a limit on the outgoing direction of the terminal 41. The preset position can be a position suitable for installing external three-phase cables, or a fixed position set according to actual needs; this embodiment does not impose any limitations. By simultaneously providing the flexible buckle 5 and the terminal block 3, the terminal 41 can be limited in multiple directions, preventing the terminal 41 from shifting its position at the preset position and affecting the reliability of installing external three-phase cables.

[0036] Specifically, the elastic buckle 5 may include a movable end 51, a fixed end 52, and a connecting rod 53. The movable end 51 is connected to the fixed end 52 via the connecting rod 53, and the fixed end 52 is fixedly disposed on one side of the terminal retaining wall 3. When the elastic buckle 5 deforms, since the fixed end 52 is fixedly disposed on one side of the terminal retaining wall 3, the connecting rod 53 can drive the movable end 52 to reset under the fixing action of the fixed end 52.

[0037] like Figure 4 As shown, as a preferred technical solution of this embodiment, the movable end 51 is provided with a guide surface 511 on the side away from the terminal block 3, which is suitable for the front end of the terminal 41 to slide into the mounting position 11, so that the terminal 41 can be smoothly pushed into the mounting position 11.

[0038] As a preferred technical solution in this embodiment, the movable end 51 is provided with a limiting part 512 adapted to the rear end of the wiring terminal 41 on the side near the terminal block 3, so that the wiring terminal 41 cannot be withdrawn after reaching the preset position.

[0039] like Figure 4 and Figure 5 As shown, in a specific embodiment of this utility model, the front end of the terminal 41 is a trapezoidal structure that is narrower at the front and wider at the back, and the rear end of the terminal 41 is a rectangular structure. The movable end 51 of the elastic buckle 5 is an inverted trapezoidal structure opposite to the trapezoidal structure. The inverted trapezoidal structure is connected to the terminal retaining wall 3 through the connecting rod 53. When installing the terminal 41, the terminal 41 can be pushed horizontally so that the inclined surface of the front end of the terminal 41 abuts against the inclined surface (i.e., the guide surface 511) of the inverted trapezoidal structure, causing the elastic buckle to deform and allowing the terminal 41 to slide smoothly into the installation position 11. When the terminal 41 reaches the preset position, the elastic buckle returns to its original shape, and the chamfer (i.e., the limiting part 512) in the inverted trapezoidal structure opposite to the rear end of the terminal 41 limits the rectangular structure, preventing the terminal 41 from retracting and limiting it to the preset position. To remove the terminal 41, the elastic buckle 5 can be manually pried open to force it to deform, allowing the terminal 41 to be easily removed. In the figure, the arrow indicates the direction of the horizontal push of the terminal.

[0040] As a preferred technical solution in this embodiment, the base 1 and the terminal retainer 3 are integrally formed to ensure a stable connection between the terminal retainer 3 and the base 1. Specifically, the integral forming of the base 1 and the terminal retainer 3 can be achieved by injection molding or 3D printing; in some other embodiments of this utility model, the terminal retainer 3 can also be fixed to the base 1 by bonding, thermoplasticizing, etc., and this embodiment is not limited to this.

[0041] In one embodiment of the present invention, the bolt 2 installs the terminal 41 on the mounting position 11 through the mounting hole 111 on the mounting position 11.

[0042] like Figure 3 As shown, as a preferred technical solution in this embodiment, in order to avoid the motor vibration affecting the stability of the bolt 2 fixing, an insert nut 112 adapted to the bolt 2 can be provided on the mounting hole 111, which improves the reliability of the bolt 2 fixing and the durability of the three-phase adapter.

[0043] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A three-phase adapter, comprising: The three-phase adapter includes a base (1) and bolts (2), wherein the base (1) has multiple mounting positions (11), and the bolts (2) are used to install the terminals (41) of the three-phase output lines (4) on the mounting positions (11). The three-phase adapter further includes: Terminal baffle (3) is provided along the outgoing direction of the mounting position (11). A limiting groove (31) is provided at the connection between the terminal baffle (3) and the base (1). The limiting groove (31) is suitable for limiting the wiring terminal (41).

2. The three-phase adapter according to claim 1, characterized in that, The terminal retainer (3) is in groups of two. The limiting grooves (31) of the two terminal retainers (3) in each group are opposite each other, limiting the two sides of the wiring terminal (41).

3. The three-phase adapter according to claim 1 or 2, characterized in that, One side of the terminal block (3) is provided with an elastic buckle (5). The elastic buckle (5) deforms during the process of the terminal (41) extending into the limiting groove (31) and recovers its deformation when the terminal (41) reaches the preset position, so as to provide the terminal (41) with the limiting of the outgoing direction.

4. The three-phase adapter according to claim 3, characterized in that, The elastic buckle (5) includes a movable end (51), a fixed end (52) and a connecting rod (53). The movable end (51) is connected to the fixed end (52) through the connecting rod (53). The fixed end (52) is fixedly disposed on one side of the terminal retaining wall (3).

5. The three-phase adapter according to claim 4, characterized in that, The movable end (51) is provided with a guide surface (511) on the side away from the terminal block (3) to facilitate the front end of the wiring terminal (41) to slide into the mounting position (11).

6. The three-phase adapter according to claim 4, characterized in that, The movable end (51) is provided with a limiting part (512) on the side near the terminal block (3) that is adapted to the rear end of the wiring terminal (41).

7. The three-phase adapter according to claim 1, characterized in that, The base (1) and the terminal retainer (3) are integrally formed.

8. The three-phase adapter according to claim 1, characterized in that, The bolt (2) installs the terminal (41) on the mounting position (11) through the mounting hole (111) on the mounting position (11).

9. The three-phase adapter according to claim 8, characterized in that, An insert nut (112) adapted to the bolt (2) is provided on the mounting hole (111).

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