Motor without lug plate structure

Abstract

The utility model discloses a motor free of a lug plate structure, which comprises a stator assembly and a rotor assembly, the stator assembly comprises a stator core, an end insulator, a coil winding and a power lead, after the stator core is provided with the end insulator, the power lead is arranged on the end insulator, and then the coil winding is wound to form the stator assembly. The power lead adopts a single-strand wire core structure, a single-strand wire core is exposed at the end part of the power lead, the single-strand wire core is bent to form a winding part which protrudes upwards, an insertion part protrudes below the winding part, a bayonet socket is arranged on an end part insulator, and a mounting hole is dug in the top end surface of the bayonet socket. The insertion part of the single-strand wire core is inserted into the mounting hole of the bayonet socket for fixation; and the wire end of the coil winding is wound on the winding part of the single-strand wire core to form electric connection. A power lead is well fixed and prevented from moving, and follow-up production is not affected.

Description

Technical Field

[0001] The utility model relates to a motor with a wiring piece-free structure. Background Art

[0002] The existing inner rotor motor includes a stator assembly and a rotor assembly, wherein the stator assembly includes a stator core, end insulation, coil winding and power lead, wherein the stator core is installed with end insulation and then the coil winding is wound, a terminal is plugged into the end insulation, the end of the coil winding is wound on the terminal, and the end of the power lead is welded on the terminal to form an electrical connection. See patent number 201820375055.4, titled: A stator assembly of an outer rotor motor and an outer rotor motor used therein, which has a complex structure, has multiple terminals, is costly, requires soldering, and has a complex process, which affects production efficiency.

[0003] If the wiring lug is eliminated, it is necessary to directly connect the power lead to the end of the coil winding (i.e., a structure without wiring lugs), see patent number: 201220076118.9, patent name: A utility model for connecting the power lead of a motor to the winding. The motor with the wiring lug-free structure has the following disadvantages: 1) The power lead has no fixed structure and is easy to move; 2) After welding the end of the power lead to the coil winding, it needs to be sealed with glue or heat shrink tube, which makes the process complicated and affects production efficiency. 3) The traditional power lead adopts a multi-strand thin-diameter wire core structure, and the wire core is relatively soft and cannot play the role of supporting and fixing the terminal. Summary of the invention

[0004] The utility model aims to provide a motor with a free-connection sheet structure, so as to solve the technical problem that the power lead wire of the motor with a free-connection sheet structure in the prior art has no fixed structure and is easy to move.

[0005] A further object of the utility model is to provide a motor with a lug-free structure, so as to solve the technical problem in the prior art that after welding the power leads of the motor with a lug-free structure to the wire ends of the coil winding, they need to be wrapped with glue or sealed with a heat shrink tube, which makes the process complicated and affects the production efficiency.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A motor with a lug-free structure comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a stator core, end insulation, a coil winding and a power lead, wherein after the end insulation of the stator core is installed, the power lead is installed on the end insulation, and then the coil winding is wound, characterized in that: the power lead adopts a single-strand wire core structure, the single-strand wire core is exposed at the end of the power lead, the single-strand wire core is bent to form a winding portion protruding upward, an insertion portion protrudes below the winding portion, a socket is provided on the end insulation, a mounting hole is dug out on the top surface of the socket, the insertion portion of the single-strand wire core is plugged into the mounting hole of the socket for fixation, and the wire end of the coil winding is wound on the winding portion of the single-strand wire core to form an electrical connection.

[0008] The wire ends of the coil winding are wound on the winding part of the single-strand wire core and are wrapped by the plastic packaging body.

[0009] The above-mentioned plastic package body is formed by a dipping process.

[0010] The winding portion includes a first bending section, a second bending section and a transition section connecting the first bending section and the second bending section.

[0011] The above-mentioned insertion portion extends downward from the bottom of the second bending section.

[0012] The power lead and the single-strand wire core with the exposed end form a T-shaped structure.

[0013] The lead wire passage which can accommodate the power lead wire is arranged on the outer periphery and the end insulation of the socket.

[0014] A notch is provided on the baffle plate outside the lead passage so that the power lead can be led out from the notch.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The power lead adopts a single-strand wire core structure. The single-strand wire core has a larger diameter and can be bent to play a supporting and fixing role, thereby replacing the wiring piece;

[0017] 2. A single-strand core is exposed at the end of the power lead, and the single-strand core is bent to form a winding portion protruding upward, an insertion portion protrudes below the winding portion, a socket is provided on the end insulation, a mounting hole is dug out on the top surface of the socket, the insertion portion of the single-strand core is plugged into the mounting hole of the socket for fixation, and the wire end of the coil winding is wound on the winding portion of the single-strand core to form an electrical connection, which can well fix the power lead to prevent the power lead from moving and affecting subsequent production.

[0018] 3. Other advantages of the utility model are described in detail in the embodiment section of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A stereogram provided for the utility model;

[0020] Figure 2 An exploded view provided for the utility model;

[0021] Figure 3 It is a schematic diagram of the assembly of the stator core and the end insulation provided by the utility model;

[0022] Figure 4 A three-dimensional diagram of the power lead provided by the utility model;

[0023] Figure 5 yes Figure 1 A partial enlarged view of part B. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] like Figures 1 to 5As shown, this embodiment provides a motor with a wiring sheet-free structure, including a stator assembly 100 and a rotor assembly, wherein the stator assembly 100 includes a stator core 1, an end insulation 2, a coil winding 3 and a power lead 4, wherein after the stator core 1 is installed with the end insulation 2, the power lead 4 is installed on the end insulation 2, and then the coil winding 3 is wound, characterized in that: the power lead 4 adopts a single-strand core structure, the single-strand core 40 is exposed at the end of the power lead 4, the single-strand core 40 is bent to form a winding portion 41 protruding upward, an insertion portion 42 protrudes below the winding portion 41, a socket 21 is provided on the end insulation 2, a mounting hole 22 is dug out on the top surface of the socket 21, the insertion portion 42 of the single-strand core 40 is plugged into the mounting hole 22 of the socket 21 for fixation, and the wire end 31 of the coil winding 3 is wound on the winding portion 41 of the single-strand core 40 to form an electrical connection. The power lead 4 adopts a single-strand wire core structure. The single-strand wire core 40 has a larger wire diameter and can be bent to play a supporting and fixing role, thereby being able to replace the wiring piece; the single-strand wire core 40 is exposed at the end of the power lead 4, and the single-strand wire core 40 is bent to form a winding portion 41 protruding upward, and an insertion portion 42 protrudes below the winding portion 41. A plug socket 21 is provided on the end insulation 2, and a mounting hole 22 is dug out on the top surface of the plug socket 21. The insertion portion 42 of the single-strand wire core 40 is plugged into the mounting hole 22 of the plug socket 21 for fixation, and the wire end 31 of the coil winding 3 is wound on the winding portion 41 of the single-strand wire core 40 to form an electrical connection, which can well fix the power lead 4 to prevent the power lead 4 from moving and affecting subsequent production.

[0027] The wire ends 31 of the coil winding 3 are wound on the winding portion 41 of the single-strand wire core 40 and are wrapped by the plastic package 5. The plastic package 5 is formed by a plastic dipping process. The process is simple, and the steps of rubber coating, heat shrink tube sheathing, glass fiber tube sheathing, etc. can be omitted, which can improve production efficiency, and the plastic package 5 has better sealing performance.

[0028] The winding portion 41 includes a first bending section 41a, a second bending section 41b and a transition section 41c connecting the first bending section 41a and the second bending section 41b. The structure is simple and easy to manufacture. Since the single-strand wire core 40 has a relatively thick wire diameter and has sufficient hardness to play a supporting and fixing role, it can replace the terminal block, reducing the manufacturing cost.

[0029] The above-mentioned insertion portion 42 extends downward from the bottom of the second bending section 41b and has a simple structure.

[0030] The power lead wire 4 and the single-strand wire core 40 with the exposed end portion form a T-shaped structure, which is firm and has sufficient structural strength.

[0031] The lead passage 23 capable of accommodating the power lead 4 is arranged on the outer periphery of the socket 21 and the end insulation 2, so as to facilitate fixing the power lead 4 and enhance the integrity.

[0032] A notch 25 is formed on the baffle plate 24 outside the lead passage 23 so that the power lead 4 can be led out from the notch 25 . The structure is simple and the power lead 4 can be easily led out.

[0033] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A motor with a lug-free structure, comprising a stator assembly (100) and a rotor assembly, wherein the stator assembly (100) comprises a stator core (1), an end insulation (2), a coil winding (3) and a power lead (4), wherein after the stator core (1) is installed with the end insulation (2), the power lead (4) is installed on the end insulation (2), and then the coil winding (3) is wound, characterized in that: The power lead (4) adopts a single-strand wire core structure. The single-strand wire core (40) is exposed at the end of the power lead (4). The single-strand wire core (40) is bent to form a winding portion (41) protruding upward. An insertion portion (42) protrudes below the winding portion (41). A plug socket (21) is provided on the end insulation (2). A mounting hole (22) is dug out on the top surface of the plug socket (21). The insertion portion (42) of the single-strand wire core (40) is plugged into the mounting hole (22) of the plug socket (21) for fixing. The wire end (31) of the coil winding (3) is wound on the winding portion (41) of the single-strand wire core (40) to form an electrical connection.

2. The motor with a lug-free structure according to claim 1, characterized in that: The wire ends (31) of the coil winding (3) are wound on the winding portion (41) of the single-strand wire core (40) and are wrapped by the plastic packaging body (5).

3. The motor with a lug-free structure according to claim 2, characterized in that: The plastic package body (5) is formed by a dipping process.

4. A motor with a lug-free structure according to claim 1, 2 or 3, characterized in that: The winding portion (41) comprises a first bending section (41a), a second bending section (41b) and a transition section (41c) connecting the first bending section (41a) and the second bending section (41b).

5. The motor with a lug-free structure according to claim 4, characterized in that: The insertion portion (42) extends downward from the bottom of the second bending section (41b).

6. The motor with a lug-free structure according to claim 5, characterized in that: The power lead (4) and the single-strand wire core (40) with the exposed end portion form a T-shaped structure.

7. The motor with a lug-free structure according to claim 6, characterized in that: A lead passage (23) capable of accommodating a power lead (4) is arranged on the periphery of the socket (21) and on the end insulation (2).

8. The motor with a lug-free structure according to claim 7, characterized in that: A notch (25) is formed on the baffle plate (24) outside the lead passage (23) so that the power lead (4) can be led out from the notch (25).

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