Novel lug terminal and three-phase motor using same

Abstract

The utility model discloses a novel lug terminal and a three-phase motor applying the same, which comprise a welding platform (50) and a mounting part (51) which is positioned at the middle position of the rear side of the welding platform (50) and protrudes downwards, and are characterized in that two opposite convex blocks (52) protrude on the top surface of the welding platform (50) and are close to the mounting part (51), and a branching groove (53) is formed between the two convex blocks (52); a first welding fluid containing groove (54) and a second welding fluid containing groove (55) are formed in the positions, on the outer sides of the two protruding blocks (52), of the welding platform (50) respectively, and a winding part (56) extends out of the right side of the welding platform (50). A branching and welding mode is adopted, the process consistency of products is guaranteed, the welding stability is improved, a baffle structure is additionally arranged on the outer side of the bonding pad, the tin ball range is limited, and the welding effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor field, concretely is a novel terminal of wiring piece and three -phase motor of application thereof. BACKGROUND

[0002] With the digitalization and automation requirement of production, it is a trend of motor industry that the aluminum wire motor adopts laser welding process to replace the old process of manual welding / peak welding, and the laser welding process has the advantages of high production effect and improved automation degree.

[0003] The old terminal scheme is seen in the utility model patent with the patent number CN202321089815 and the name of a terminal and the stator assembly and motor of application thereof, in the patent, the single-phase terminal (connected with a wire) and the common terminal (connected with two wires) adopt the same structure of the terminal, the terminal scheme can achieve a more satisfactory welding effect when welding a single wire, but when welding double wires, the area of the welding pad is not enough when the wire diameter is thick, and the two enameled wires have overlapping and winding interference phenomenon, which leads to the problem of insufficient welding pad position width and unstable welding. SUMMARY

[0004] The utility model discloses a novel terminal of wiring piece and three -phase motor of application thereof, solve the single-phase terminal of motor in the prior art and the common terminal all adopt the same structure of the terminal, when welding double wires, the area of the welding pad is not enough when the wire diameter is thick, and the two enameled wires have overlapping and winding interference phenomenon, which leads to the problem of unstable welding effect.

[0005] The technical scheme of the utility model is realized as follows:

[0006] A novel terminal of wiring piece, including welding platform and the installation of the protruding department in the middle position of welding platform rear side, its characterized in that: the two opposite protruding blocks are protruded on the top surface of welding platform and close to the installation department position, the split wire groove is formed between the two protruding blocks, the first solder liquid storage recess and the second solder liquid storage recess are arranged on the outer side of the two protruding blocks and the welding platform respectively, and the winding part extends out on the right side of the welding platform.

[0007] Preferably, the welding platform front side edge protrudes a baffle upwards.

[0008] A three-phase motor, comprising a stator core, an end insulation and a coil winding, the end insulation is installed on the stator core and wraps the coil winding, a terminal block is provided on the end insulation, a terminal is installed on the terminal block, and a slot is formed on the terminal block for inserting an installation part, characterized in that: the terminal is a new type terminal as described above, the coil winding comprises an A-phase coil winding, a B-phase coil winding and a C-phase coil winding, the wire tail of the A-phase coil winding is wound to one side of the winding part after passing through the branch slot, a second solder receiving groove is formed on the second solder pad, and the second solder pad is electrically connected with the wire tail of the A-phase coil winding; the wire tail of the B-phase coil winding extends to the other side direction after passing through the branch slot and is electrically connected with the wire head of the C-phase coil winding through the first solder receiving groove; the first solder receiving groove is formed on the first solder pad, and the first solder pad is electrically connected with the wire tail of the B-phase coil winding and the wire head of the C-phase coil winding.

[0009] Preferably, the first solder pad and the second solder pad are blocked by the baffle.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The technical scheme of the utility model is changed to a branch soldering mode, which ensures the consistency of the process of the product and improves the welding stability.

[0012] 2. In view of the problem that the soldering tin height is large and the tin bead radius is large for the thick wire diameter, a baffle structure is added outside the solder pad to limit the tin bead range and ensure the welding effect.

[0013] 3. Other advantages of the utility model are described in detail in the specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of one angle of the utility model embodiment one;

[0015] Figure 2 is a perspective view of another angle of the utility model embodiment one;

[0016] Figure 3 is a perspective view of one angle of the utility model embodiment two;

[0017] Figure 4 is Figure 3 the A part in the utility model is a partial enlarged view. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] As Figures 1 to 2 The embodiment provides a novel lug terminal, which comprises a welding platform 50 and an installation part 51 protruding downwards at the middle position of the rear side of the welding platform 50, characterized in that two opposite protrusions 52 are protruded on the top surface of the welding platform 50 and close to the installation part 51, a wire distribution groove 53 is formed between the two protrusions 52, a first solder liquid receiving groove 54 and a second solder liquid receiving groove 55 are arranged on the outer side of the two protrusions 52 and on the welding platform 50 respectively, and a winding part 56 extends out of the right side of the welding platform 50.

[0020] The welding platform 50 is provided with a baffle 57 protruding upwards on the front side edge.

[0021] The utility model utilizes the two opposite protrusions 52, the wire distribution groove 53, the first solder liquid receiving groove 54 and the second solder liquid receiving groove 55 on the outer side of the two protrusions 52, which can change the wire distribution and soldering mode, ensure the consistency of the product process and improve the welding stability. The baffle 57 structure is added on the outer side of the welding pad to limit the range of tin beads (i.e. unsolidified solder liquid), so as to ensure the welding effect.

[0022] Embodiment two:

[0023] As Figures 1 to 4The embodiment shown provides a three-phase motor, which comprises a stator core 1, an end insulation 2 and a coil winding 3, the end insulation 2 is installed on the stator core 1 and winds the coil winding 3, a terminal seat 21 is arranged on the end insulation 2 in a protruding mode, a terminal 5 is installed on the terminal seat 21, and a slot 211 is formed on the terminal seat 21 and used for inserting an installation part 51, characterized in that: the terminal 5 is a new type terminal as described in the first embodiment, the coil winding 3 comprises an A-phase coil winding, a B-phase coil winding and a C-phase coil winding, a wire tail 31 of the A-phase coil winding is wound to a winding part 56 on one side after passing through a branch slot 53, a second solder receiving groove 55 is arranged above a second solder pad 62 formed by welding, and the second solder pad 62 electrically connects the wire tail 31 of the A-phase coil winding and the terminal 5; a wire tail 32 of the B-phase coil winding is extended to the other side direction after passing through the branch slot 53 and is electrically connected with a wire head 33 of the C-phase coil winding through a first solder receiving groove 54, and a first solder pad 61 is formed above the first solder receiving groove 54 by welding, and the first solder pad 61 electrically connects the wire tail 32 of the B-phase coil winding, the wire head 33 of the C-phase coil winding and the terminal 5.

[0024] The first solder pad 61 and the second solder pad 62 are blocked by the baffle 57.

[0025] The two opposite protrusions 52, the branch slot 53, the first solder receiving groove 54 and the second solder receiving groove 55 outside the two protrusions 52 can be changed into a branch soldering mode, the process consistency of the product is ensured, and the welding stability is improved. The baffle 57 structure is added outside the solder pad to limit the range of tin beads (i.e. solder) and ensure the welding effect.

[0026] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited to this, and any change, modification, replacement, combination and simplification made without departing from the spirit and principle of the utility model are equivalent replacement modes and are included in the protection scope of the utility model.

Claims

1. A new type of lug terminal comprising a welding platform (50) and a mounting portion (51) protruding downwardly at a middle position of the rear side of the welding platform (50), characterized in that: Two opposite protrusions (52) are protruded on the top surface of the welding platform (50) and close to the installation part (51), a branch slot (53) is formed between the two protrusions (52), a first welding liquid receiving groove (54) and a second welding liquid receiving groove (55) are respectively arranged on the welding platform (50) outside the two protrusions (52), and a winding part (56) extends on the right side of the welding platform (50).

2. A novel tab terminal according to claim 1, characterized in that: The front side edge of the welding platform (50) is upwardly protruded with a baffle (57).

3. A three-phase motor comprising a stator core (1), an end insulation (2) and a coil winding (3), the end insulation (2) being mounted on the stator core (1) and winding the coil winding (3), a terminal seat (21) being provided protruding on the end insulation (2), a terminal (5) being mounted on the terminal seat (21), a slot (211) being provided on the terminal seat (21) for inserting a mounting portion (51), characterized in that The wiring terminal (5) is a new type of terminal as claimed in claim 1 or 2, the coil winding (3) comprises an A-phase coil winding, a B-phase coil winding and a C-phase coil winding, the wire tail (31) of the A-phase coil winding is wound to the winding part (56) on one side after passing through the branch slot (53), a second solder pad (62) is formed above the second welding liquid receiving groove (55) by welding, the second solder pad (62) electrically connects the wire tail (31) of the A-phase coil winding and the wiring terminal (5); the wire tail (32) of the B-phase coil winding is extended to the other side direction after passing through the branch slot (53) and is electrically connected with the wire head (33) of the C-phase coil winding through the first welding liquid receiving groove (54); a first solder pad (61) is formed above the first welding liquid receiving groove (54) by welding, the first solder pad (61) electrically connects the wire tail (32) of the B-phase coil winding, the wire head (33) of the C-phase coil winding and the wiring terminal (5).

4. A three-phase electric machine according to claim 3, characterized in that: The first solder pad (61) and the second solder pad (62) are blocked by the baffle (57).

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