Brushless motor wiring terminal fixing structure

Abstract

The utility model relates to the technical field of brushless motor stator wiring terminal forms, in particular to a brushless motor wiring terminal fixing structure which comprises a fixing base, a first wiring terminal is movably connected to the surface of the fixing base, a connecting groove is formed in the top of the first wiring terminal, and fixing holes are formed in the two sides of the connecting groove. Fixing bolts are movably connected to the interiors of the fixing holes, pressing plates are movably connected to the ends, away from the first wiring terminals, of the fixing bolts, annular grooves are formed in the surface of the fixing base, and buckles are arranged on the inner walls of the annular grooves. According to the utility model, the three uniformly distributed buckles with the barbs are additionally arranged in the circumferential direction, a convex interference structure in a groove in the prior art is replaced, the assembly is more convenient, the anti-falling effect is achieved after the assembly, the universality is high, the wiring harness connector can be used according to different sizes of wiring terminals, and the pressing plate is arranged, so that the wiring harness is prevented from loosening.

Description

Technical Field

[0001] The utility model belongs to the technical field of stator terminal forms of brushless motors, and in particular relates to a fixing structure of the stator terminal of a brushless motor. Background Art

[0002] Brushless motors often use plastic insulation as a support base. The terminal blocks are first assembled in the grooves of the base, and then the pins are welded to the stator windings.

[0003] In the existing brushless motor stator busbar assembly, a raised portion is added to the groove of the plastic base to clamp the terminal by interference fit. Due to the uneven thickness of the plastic wall, this structure makes it difficult to manually install the terminal and difficult to remove it after installation. At the same time, when the terminal pins are welded to the winding, the terminal is prone to warping or swinging, resulting in poor welding. Moreover, the winding is not fixed after welding and is prone to loosening. Therefore, a fixing structure for the brushless motor terminal is urgently needed to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a fixing structure for the terminal of a brushless motor, so as to solve the problem that in the existing brushless motor stator busbar assembly proposed in the above-mentioned background technology, a raised portion is added to the groove of the plastic base to clamp the terminal by interference fit. Due to the uneven thickness of the plastic wall, this structure makes it more laborious to manually install the terminal, and it is difficult to remove it after installation. At the same time, when the terminal pins are welded to the winding, the terminal is prone to warping or swinging, resulting in poor welding, and the winding is not fixed after welding, which is prone to loosening.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fixing structure for a brushless motor terminal, comprising a fixed base, a surface of the fixed base movably connected to terminal one, a surface of the fixed base movably connected to terminal two, a surface of the fixed base movably connected to terminal three, a connecting groove being provided on the top of terminal one, fixing holes being provided on both sides of the connecting groove, a fixing bolt being movably connected inside the fixing hole, a pressure plate being movably connected to the end of the fixing bolt away from terminal one, a card slot being provided on the surface of terminal one, an annular groove being provided on the surface of the fixed base, a buckle being provided on the inner wall of the annular groove, and a fastening groove being provided on the upper surface of the fixed base.

[0006] Preferably, a hole groove one is opened on the surface of the pressure plate, and the fixing bolt passes through the hole groove one and is movably connected to the fixing hole.

[0007] Preferably, three groups of the fixing bolts and the pressing plates are provided, and the three groups of the fixing bolts and the three groups of the pressing plates are respectively provided on the upper parts of the first connecting terminal, the second connecting terminal and the third connecting terminal.

[0008] Preferably, the radii of the first, second and third wiring terminals decrease in sequence, and three groups of the annular grooves are provided, and the sizes of the three groups of the annular grooves correspond to the radii of the first, second and fourth wiring terminals.

[0009] Preferably, a certain gap is left between the clamping slot and the fastening slot.

[0010] Preferably, a circular chamfer is provided at the bottom of the fastening groove.

[0011] Preferably, nine groups of the buckles are provided in the annular groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The fixing structure of the brushless motor terminal adds three evenly distributed clips with barbs in the circumferential direction, eliminating the protruding interference structure in the groove in the prior art. When manually installed, the terminal can be pressed downward into the annular groove along the chamfer with a certain slope on the clip. At this time, the clip will produce a certain elastic deformation. After the terminal is pressed in, the clip automatically returns to its position and firmly clamps the terminal, ensuring the consistency of subsequent welding. It has good interchangeability. The terminal can be easily removed by gently pushing the clip, which makes assembly more convenient and has an anti-falling effect after assembly. It is also highly versatile and can be used for different terminal sizes.

[0014] 2. The fixing structure of the brushless motor terminal is provided with a pressure plate. After welding is completed, the pressure plate is tightened by fixing bolts to prevent the wiring harness from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a frontal perspective schematic diagram of the structure of the present utility model;

[0016] Figure 2 This is an exploded schematic diagram of the structure of the wiring terminal 1 and the pressure plate of the utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the first, second and third wiring terminals of the present invention;

[0018] Figure 4 This is a schematic structural perspective diagram of the fixed base of the utility model;

[0019] Figure 5 It is a bottom perspective schematic diagram of the structure of the present invention.

[0020] In the figure: 1. Fixed base; 2. Terminal 1; 3. Terminal 2; 4. Terminal 3; 5. Connection slot; 6. Fixing hole; 7. Fixing bolt; 8. Pressing plate; 9. Slot; 10. Annular groove; 11. Buckle; 12. Fastening slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , an embodiment provided by the utility model:

[0023] A fixing structure for a brushless motor terminal comprises a fixing base 1, a fixing base 1 having a movably connected surface with a terminal 1 2, a fixing base 1 having a movably connected surface with a terminal 2 3, a fixing base 1 having a movably connected surface with a terminal 3 4, a connecting groove 5 being provided on the top of the terminal 1 2, fixing holes 6 being provided on both sides of the connecting groove 5, a fixing bolt 7 being movably connected inside the fixing hole 6, a pressing plate 8 being movably connected to the end of the fixing bolt 7 away from the terminal 1 2, a card slot 9 being provided on the surface of the terminal 1 2, an annular groove 10 being provided on the surface of the fixing base 1, a buckle 11 being provided on the inner wall of the annular groove 10, and a fixing screw 11 being fixed. The upper surface of the fixed base 1 is provided with a fastening groove 12, and three evenly distributed clips 11 with barbs are added in the circumferential direction to eliminate the protruding interference structure in the groove in the prior art. When manually installed, the terminal can be pressed downward into the annular groove 10 along the chamfer with a certain slope on the clip 11. At this time, the clip 11 will produce a certain elastic deformation. After the terminal is pressed in, the clip 11 automatically returns to its position and firmly clamps the terminal, ensuring the consistency of subsequent welding and having good interchangeability. The terminal can be easily removed by lightly pushing the clip 11. A pressure plate 8 is provided. After welding is completed, the pressure plate 8 is tightened by the fixing bolt 7 to prevent the wiring harness from loosening.

[0024] Furthermore, a hole groove 1 is opened on the surface of the pressure plate 8, and the fixing bolt 7 passes through the hole groove 1 and is movably connected with the fixing hole 6. The fixing bolt 7 presses the pressure plate 8 to prevent the wiring harness from loosening.

[0025] Furthermore, three groups of fixing bolts 7 and pressing plates 8 are provided, and the three groups of fixing bolts 7 and the three groups of pressing plates 8 are respectively provided on the upper parts of the connecting terminal 1 2 , the connecting terminal 2 3 and the connecting terminal 3 4 .

[0026] Furthermore, the radii of terminal 1 2, terminal 2 3 and terminal 3 4 decrease successively, and three groups of annular grooves 10 are provided. The sizes of the three groups of annular grooves 10 correspond to the radii of terminal 1 2, terminal 2 3 and terminal 4. The terminal can be pressed downward into the annular groove 10 along the chamfer with a certain slope on the buckle 11 to ensure the consistency of subsequent welding and have good interchangeability. The terminal can be easily removed by lightly pushing the buckle 11.

[0027] Furthermore, a certain gap is left between the card slot 9 and the fastening slot 12, the gap is connected to the wire, and the wire is fixed by a fastener passing through the card slot 9 and the fastening slot 12.

[0028] Furthermore, a rounded chamfer is provided at the bottom of the fastening groove 12 to facilitate the installation of the fastener.

[0029] Furthermore, nine groups of clips 11 are provided in the annular groove 10, and every three groups of clips 11 fix one terminal. The terminal can be pressed downward into the annular groove 10 along the chamfer with a certain slope on the clip 11. At this time, the clip 11 will produce a certain elastic deformation. After the terminal is pressed in, the clip 11 automatically returns to its position and firmly clamps the terminal, ensuring the consistency of subsequent welding and having good interchangeability. The terminal can be easily removed by lightly pushing the clip 11.

[0030] Working principle: When fixing the brushless motor terminal, the terminal 1 2, terminal 2 3 and terminal 3 4 are installed in sequence according to the corresponding relationship between the radius of the three groups of terminal and the three groups of annular groove 10. In the circumferential direction, each terminal uses three evenly distributed buckles 11 with barbs, and the convex interference structure in the groove in the prior art is abolished. When manually installed, the terminal can be pressed down into the annular groove 10 along the chamfer with a certain slope on the buckle 11. At this time, the buckle 11 will produce a certain elastic deformation. After the terminal is pressed in, the buckle 11 The automatic return firmly clamps the terminal block to ensure the consistency of subsequent welding and has good interchangeability. The terminal block can be easily removed by gently pushing the buckle 11. A pressure plate 8 is designed on the top of each terminal block. After the connection slot 5 and the winding are welded, the pressure plate 8 is driven by the fixing bolt 7 to tighten the welding point to prevent the wiring harness from loosening. A certain gap is left between the slot 9 and the fastening slot 12. The wire is connected to the gap and fixed by fasteners passing through the slot 9 and the fastening slot 12. The bottom of the fastening slot 12 is provided with a circular chamfer to facilitate the installation of the fastener.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fixing structure for a brushless motor terminal, comprising a fixing base (1), characterized in that: The surface of the fixed base (1) is movably connected to a wiring terminal 1 (2), the surface of the fixed base (1) is movably connected to a wiring terminal 2 (3), the surface of the fixed base (1) is movably connected to a wiring terminal 3 (4), a connection groove (5) is provided on the top of the wiring terminal 1 (2), fixing holes (6) are provided on both sides of the connection groove (5), a fixing bolt (7) is movably connected inside the fixing hole (6), and the end of the fixing bolt (7) away from the wiring terminal 1 (2) is movably connected to a pressure plate (8), a clamping groove (9) is provided on the surface of the wiring terminal 1 (2), an annular groove (10) is provided on the surface of the fixed base (1), a buckle (11) is provided on the inner wall of the annular groove (10), and a fastening groove (12) is provided on the upper surface of the fixed base (1).

2. The fixing structure of the brushless motor terminal according to claim 1, characterized in that: A hole groove one is provided on the surface of the pressure plate (8), and the fixing bolt (7) passes through the hole groove one and is movably connected to the fixing hole (6).

3. The fixing structure of the brushless motor terminal according to claim 1, characterized in that: The fixing bolts (7) and the pressing plates (8) are provided in three groups, and the three groups of fixing bolts (7) and the three groups of pressing plates (8) are respectively provided on the upper parts of the first connecting terminal (2), the second connecting terminal (3) and the third connecting terminal (4).

4. The fixing structure of the brushless motor terminal according to claim 1, characterized in that: The radii of the first connecting terminal (2), the second connecting terminal (3) and the third connecting terminal (4) decrease in sequence, and three groups of the annular grooves (10) are provided. The sizes of the three groups of the annular grooves (10) correspond to the radii of the first connecting terminal (2), the second connecting terminal (3) and the fourth connecting terminal.

5. The fixing structure of the brushless motor terminal according to claim 1, characterized in that: A certain gap is left between the clamping slot (9) and the fastening slot (12).

6. The fixing structure of the brushless motor terminal according to claim 1, characterized in that: The bottom of the fastening groove (12) is provided with a circular chamfer.

7. The fixing structure of the brushless motor terminal according to claim 1, characterized in that: Nine groups of the buckles (11) are arranged in the annular groove (10).

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