Welding-free motor

Abstract

The utility model discloses a welding-free motor, which comprises a shell assembly (1), a stator assembly (2), a rotor assembly (3), a wiring assembly (4) and a PCB (printed circuit board) (5) are arranged in the shell assembly (1), an impeller assembly (6) is mounted at the lower end of the shell assembly (1), and an end cover (7) is mounted at the upper end of the shell assembly (1); the wiring assembly (4) comprises a wiring terminal (41), and the wiring terminal is connected with the PCB (5) in an inserted mode and used for electrically connecting a coil assembly with the PCB (5). Through the above mode, puncture connection can be satisfied, the reliability of electric connection between the terminal and the conductor can be improved, the wiring terminal is connected with the PCB in a plug-in manner, the connection stability is improved, and the soldering tin process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a motor without soldering. Background Art

[0002] With the rapid development of the times, people's pursuit of the quality of life is getting higher and higher. As the most practical mainstream product in the cleaning market and a good helper in the fields of smart home and automobiles, vacuum cleaners are increasingly recognized and sought after by many people at home and abroad. At present, when producing a blower, the ends of the enameled wires of the stator winding of the motor need to be connected to a PCB circuit board for controlling the rotation of the motor. In order to enable the blower to operate stably, it is necessary to ensure the connection firmness between the ends of the enameled wires of the winding and the PCB circuit board.

[0003] The motor terminal is connected to the wire by welding, riveting or piercing. Especially in the case of piercing connection, after damaging the outer enamel layer of the enameled wire, it directly contacts the metal inside the enameled wire to achieve one-time crimping conduction, which is convenient, fast, time-saving and labor-saving, so it is widely used. The piercing connection realizes the electrical connection between the terminal and the conductor by piercing the enamel layer of the enameled wire. The enameled wire is composed of an outer enamel layer and an inner conductor. However, the existing terminals mainly insert the convex teeth into the enameled wire or cut the enamel layer of the enameled wire in a blade shape and insert it into the enameled wire. Although these methods can pierce the enamel layer of the enameled wire and block the enamel layer outside the terminal, there is often residual enamel layer hindering the terminal from fully entering the inside of the enameled wire, resulting in incomplete contact between the terminal and the conductor, and insufficient contact holding force after piercing. When the terminal is vibrated, it is extremely easy to cause unreliable or ineffective electrical contact between the terminal and the conductor. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a motor without soldering, which can meet the piercing connection, improve the reliability of the electrical connection between the terminal and the conductor, and at the same time, the terminal is connected to the PCB board in a plug-in manner, improving the connection stability and reducing the soldering process.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a motor without soldering, including:

[0006] A housing assembly, in which a stator assembly, a rotor assembly, a wiring assembly and a PCB board are arranged. An impeller assembly is installed at the lower end of the housing assembly, and an end cover is installed at the upper end of the housing assembly;

[0007] A stator assembly, in which a coil assembly is arranged;

[0008] A rotor assembly, which is arranged through the center of the stator assembly, and the output end of the rotating shaft of the rotor assembly extends out of the stator assembly for connecting and driving the impeller assembly;

[0009] The wiring assembly includes a wiring terminal which is plugged into the PCB board and used to electrically connect the coil assembly to the PCB board. The electrical connection between the wiring terminal and the PCB board is achieved by plugging, reducing the soldering process, significantly reducing the stress on the connection holes of the PCB board, maintaining a constant terminal orthogonal force, and improving the connection stability.

[0010] The wiring assembly includes a plurality of uniformly distributed bases. The upper end of the base is open for the insertion of the wiring terminal. A plurality of wire guiding grooves are correspondingly arranged on the front side wall and the rear side wall at the opening of the base, and the ends of the coil assembly are inserted into the wire guiding grooves.

[0011] The wiring terminal includes a body, an insertion part and a plurality of piercing arms arranged on the body. A piercing groove is formed between adjacent piercing arms for squeezing and piercing the enameled wire of the coil to form an electrically conductive connection.

[0012] The wire guiding grooves and the piercing grooves are correspondingly arranged. When the wiring terminal is inserted into the base, the wire guiding grooves and the piercing grooves are communicated.

[0013] At least 3 piercing arms are provided to form 2 piercing grooves, enabling the wiring terminal to simultaneously pierce the ends of 2 coils and electrically connect them to the PCB board, greatly reducing the number of wiring terminals.

[0014] The piercing groove includes a first straight segment, a first arc segment, a second straight segment and a second arc segment that are sequentially penetrated. The width of the first straight segment is greater than the width of the second straight segment, and a piercing part is formed at the connection of the first arc segment and the second straight segment.

[0015] The insertion part is arranged in the middle of one end of the body. The insertion part is in a water droplet shape. A connection hole is provided on the PCB board, and the diameter of the connection hole is not greater than the maximum diameter of the insertion part.

[0016] The insertion part is provided with a through hole.

[0017] A plurality of vertical plates are arranged in the base to respectively communicate the wire guiding grooves on the corresponding front side wall and rear side wall. The ends of the coil pass through the wire guiding grooves and are placed on the vertical plates to ensure the stability when the piercing groove of the wiring terminal pierces the enameled wire of the coil.

[0018] The wiring assembly includes a fixing ring fixedly installed with the stator assembly, and a plurality of the bases are uniformly distributed on the fixing ring.

[0019] The beneficial effects of the present utility model are as follows: A solderless motor of the present utility model can meet the requirements of puncture connection, improve the reliability of the electrical connection between the terminal and the conductor. At the same time, the wiring terminal is connected to the PCB board in a plug-in manner, enhancing the stability of the connection and reducing the soldering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a solderless motor of the present utility model;

[0021] Figure 2 FIG. is a schematic internal structural diagram of a solderless motor of the present utility model;

[0022] Figure 3 FIG. is a schematic diagram of the stator assembly, impeller assembly and wiring assembly of a solderless motor of the present utility model;

[0023] Figure 4 FIG. is a schematic structural diagram of the stator assembly and wiring assembly of the wiring assembly of a solderless motor of the present utility model;

[0024] Figure 5 FIG. is a schematic structural diagram of the PCB board of a solderless motor of the present utility model;

[0025] Figure 6 FIG. is a schematic structural diagram of the wiring assembly of a solderless motor of the present utility model;

[0026] Figure 7 FIG. is a schematic structural diagram of the wiring terminal of a solderless motor of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following describes the preferred embodiments of the present utility model in detail with reference to the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a more clear and definite definition of the protection scope of the present utility model.

[0028] Please refer to Figures 1-7 , the embodiments of the present utility model include:

[0029] A solderless motor of the present utility model includes:

[0030] A housing assembly 1, in which a stator assembly 2, a rotor assembly 3, a wiring assembly 4 and a PCB board 5 are arranged. An impeller assembly 6 is installed at the lower end of the housing assembly 1, and an end cover 7 is installed at the upper end of the housing assembly 1;

[0031] The stator assembly 2, in which a coil assembly is arranged;

[0032] The rotor assembly 3 is disposed through the center of the stator assembly 2, and the output end of the rotating shaft of the rotor assembly 3 extends out of the stator assembly for connecting and driving the impeller assembly 6;

[0033] The wiring assembly 4 includes a wiring terminal 41 which is inserted and connected to the PCB board for electrically connecting the coil assembly to the PCB board 5.

[0034] The wiring assembly 4 includes a plurality of uniformly distributed bases 42. The upper end of the base 42 is open for the insertion of the wiring terminal 41. A plurality of wire-releasing grooves 43 are correspondingly arranged on the front side wall 421 and the rear side wall 422 at the opening of the base 42. The end of the coil assembly is inserted into the wire-releasing groove 43. The wiring terminal 41 includes a body 411, an insertion portion 412 and a plurality of piercing arms 413 arranged on the body 411. A piercing groove 414 is formed between adjacent piercing arms 413 for squeezing and piercing the enameled coating of the coil to form an electrically conductive connection. When this structure is implemented, the body is bent into a mouth shape, and there are 2 upwardly concave grooves at the bottom and both side walls as piercing grooves, and the rest form piercing arms. A plurality of protrusions are arranged on the outer side surface of the piercing arms. When the wiring terminal is inserted into the base, the protrusions can be clamped with the inner side wall of the base to prevent the wiring terminal from retreating or falling off after being inserted into the base, which has the functions of anti-detachment and anti-retreat. In specific implementation, the protrusions can be in the form of barbs, can be convex points, or can be elastic members inclined upward. As long as the structure has the functions of anti-detachment and anti-retreat when the wiring terminal is inserted into the base, it is within the protection scope of this application. This structure increases the thickness of the wiring terminal through an extended multi-layer structure of the wiring end, improves the mechanical structure strength, and the wiring end is not easily deformed. In this way, the assembly stability of the wiring end inserted into the corresponding plastic shell can be improved, and it is also beneficial to crimp the enameled wire.

[0035] The wire-releasing groove 43 and the piercing groove 414 are correspondingly arranged. When the wiring terminal 41 is inserted into the base 42, the wire-releasing groove 43 and the piercing groove 414 are communicated.

[0036] At least 3 piercing arms 413 are provided. Two wire-releasing grooves are formed between the 3 piercing arms, and the enameled coatings of the ends of 2 coils can be simultaneously pierced to achieve one-time crimping and conduction. Without increasing the connection cost, it saves time and effort, reduces the installation process, improves the installation efficiency, and saves the installation space.

[0037] The piercing groove 414 includes a first straight segment, a first arc segment, a second straight segment, and a second arc segment that are sequentially penetrated. The width of the first straight segment is greater than the width of the second straight segment. A piercing portion 4141 is formed at the connection between the first arc segment and the second straight segment. The diameter of the first straight segment is greater than the diameter of the coil end, enabling the insertion terminal to be smoothly inserted into the base, ensuring contact between the piercing portion and the coil end, and avoiding phenomena such as sliding and offset of the coil end.

[0038] The insertion portion 412 is disposed exactly in the middle of one end of the body 411. The insertion portion 412 is in a water droplet shape. A connection hole 51 is provided on the PCB board 5, and the diameter of the connection hole 51 is not greater than the maximum diameter of the insertion portion. In the specific implementation of this application, the insertion portion is in a water droplet shape, and the diameter of the upper part of the insertion portion is smaller than the diameter of the through hole on the PCB board, enabling the insertion portion to accurately enter the through hole. Moreover, since the diameter of the middle part is greater than the diameter of the upper part and greater than the diameter of the through hole on the PCB board, it is ensured that when the insertion portion is inserted into the through hole on the PCB board, their fit can achieve a tight fit, ensuring the stability of the connection between the insertion portion of the wiring terminal and the PCB board, and reducing the soldering process.

[0039] More specifically, the insertion portion is provided with a through hole, endowing the insertion portion with a tension characteristic, enabling the fit between the insertion portion and the PCB board to achieve a better tight fit, ensuring the stability of the connection between the insertion portion of the wiring terminal and the PCB board, and reducing the soldering process.

[0040] A plurality of vertical plates 44 are provided in the base 42, respectively connecting the front side wall 421 and the rear side wall 422 to the wire laying groove 43 correspondingly. The coil end passes through the wire laying groove and is placed on the vertical plate, ensuring the stability when the piercing groove of the wiring terminal pierces the enameled wire of the coil.

[0041] The wiring assembly 4 includes a fixing ring 45 fixedly installed with the stator assembly 2. A plurality of the bases 42 are uniformly distributed on the fixing ring 45.

[0042] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A soldering-free motor, characterized in that, Comprising: A housing assembly (1), within which a stator assembly (2), a rotor assembly (3), a wiring assembly (4), and a PCB board (5) are provided. An impeller assembly (6) is installed at the lower end of the housing assembly (1), and an end cover (7) is installed at the upper end of the housing assembly (1); The stator assembly (2), within which a coil assembly is provided; The rotor assembly (3), passing through the center of the stator assembly (2), and the output end of the rotating shaft of the rotor assembly (3) extends out of the stator assembly (2) for connecting and driving the impeller assembly (6); The wiring assembly (4), including a wiring terminal (41), which is inserted and connected to the PCB board (5) for electrically connecting the coil assembly to the PCB board (5).

2. The brushless motor according to claim 1, wherein, The wiring assembly (4) includes a plurality of uniformly distributed bases (42). The upper end of the base (42) is open for the insertion of the wiring terminal (41). A plurality of wire-releasing grooves (43) are correspondingly provided on the front side wall (421) and the rear side wall (422) at the opening of the base (42). The end of the coil assembly is inserted into the wire-releasing groove (43).

3. The brushless motor according to claim 2, wherein: The wiring terminal (41) includes a body (411), an insertion part (412), and a plurality of piercing arms (413) provided on the body (411). A piercing groove (414) is formed between adjacent piercing arms (413) for squeezing and piercing the paint film of the coil to form an electrically conductive connection.

4. The solderless motor according to claim 3, wherein, The wire-releasing groove (43) and the piercing groove (414) are correspondingly arranged. When the wiring terminal (41) is inserted into the base (42), the wire-releasing groove (43) and the piercing groove (414) are communicated.

5. The brushless motor according to claim 3, characterized in that, At least 3 piercing arms (413) are provided.

6. The brushless motor according to claim 3, wherein: The piercing groove (414) includes a first straight segment, a first arc segment, a second straight segment, and a second arc segment that are sequentially penetrated. The width of the first straight segment is greater than the width of the second straight segment. A piercing part (4141) is formed at the connection of the first arc segment and the second straight segment.

7. A solderless motor according to claim 3, characterized in that: The insertion part (412) is provided in the exact middle of one end of the body (411). The insertion part (412) is in a teardrop shape. A connection hole is provided on the PCB board (5), and the diameter of the connection hole is not greater than the maximum diameter of the insertion part.

8. A solderless motor according to claim 7, characterized in that: The insertion part (412) is provided with a through hole.

9. The brushless motor according to claim 2, wherein: A plurality of vertical plates (44) are provided within the base (42) to respectively communicate the wire-releasing grooves (43) corresponding to the front side wall (421) and the rear side wall (422).

10. A soldering-free motor according to claim 2, wherein: The wiring assembly (4) includes a fixing ring (45) fixedly installed with the stator assembly (2), and a plurality of the bases (42) are uniformly distributed on the fixing ring (45).

Images