Motor having lug-free structure

Abstract

A motor having a lug-free structure, comprising a stator assembly (100) and a rotor assembly. The stator assembly (100) comprises a stator core (1), end insulators (2), coil windings (3), and power leads (4); after the end insulators (2) are mounted on the stator core (1), the power leads (4) are mounted on one end insulator (2), and then the coil windings (3) are wound; each power lead (4) uses a single-strand wire core structure, a single-strand wire core (40) is exposed at an end of each power lead (4), the single-strand wire core (40) is bent to form a winding portion (41) protruding upward, and an inserting portion (42) protrudes below the winding portion (41); the end insulator (2) are provided with insertion seats (21), mounting holes (22) are formed in the top end surfaces of the insertion seats (21), and the inserting portions (42) of the single-strand wire cores (40) are inserted into the mounting holes (22) of the insertion seats (21) for fixation; and wire ends (31) of the coil windings (3) are wound on the winding portions (41) of the single-strand wire cores (40) to form electrical connection. Thus, the power leads (4) can be well fixed, preventing the power leads (4) from moving and affecting subsequent production.

Description

Motor without terminal TECHNICAL FIELD

[0001] The utility model relates to a motor without terminal. BACKGROUND

[0002] The existing internal rotor motor includes a stator assembly and a rotor assembly, wherein the stator assembly includes a stator core, an end insulation, a coil winding and a power supply lead, wherein the stator core is installed with the end insulation, and then the coil winding is wound, an terminal is inserted into the end insulation, the wire end of the coil winding is wound on the terminal after winding, and the end of the power supply lead is welded on the terminal to form an electrical connection. See patent No. 201820375055.4, and the name is: a stator assembly of an external rotor motor and an external rotor motor applied thereto. This structure is complex, has an additional terminal, has high cost, needs soldering, has a complex process, and affects production efficiency.

[0003] If the terminal is cancelled, the power supply lead needs to be directly connected with the wire end of the coil winding (i.e. a motor without terminal), see patent No. 201220076118.9, and the utility model patent name is: a structure for connecting a motor power supply lead and a winding. The motor without terminal has the following disadvantages: 1) the power supply lead has no fixing structure and is easy to move; 2) after the power supply lead is welded with the wire end of the coil winding, it needs to be sealed by glue or a heat shrink tube, so that the process is complex and the production efficiency is affected; and 3) the traditional power supply lead adopts a multi-strand thin diameter wire core structure, the wire core is relatively soft and cannot play a terminal supporting and fixing role.

[0004] SUMMARY

[0005] The utility model aims at providing a motor without terminal, and solves the technical problem that the power supply lead of the motor without terminal in the prior art has no fixing structure and is easy to move.

[0006] The utility model further aims at providing a motor without terminal, and solves the technical problem that the power supply lead of the motor without terminal in the prior art needs to be sealed by glue or a heat shrink tube after being welded with the wire end of the coil winding, so that the process is complex and the production efficiency is affected.

[0007] The technical scheme of the utility model is as follows:

[0008] The utility model discloses a kind of motor of free terminal structure, including stator assembly and rotor assembly, wherein stator assembly includes stator core, end insulation, coil winding and power supply lead wire, wherein stator core installs end insulation, then power supply lead wire is installed on end insulation, and coil winding is wound again, it is characterized in that: power supply lead wire uses single-strand core structure, single-strand core is exposed at the end of power supply lead wire, single-strand core is bent to form the winding portion that protrudes upwards, and the insertion portion protrudes below winding portion, insertion seat is provided on end insulation, mounting hole is excavated in the top end surface of insertion seat, and single-strand core is inserted into the mounting hole of insertion seat for fixing, and the wire head of coil winding is wound on the winding portion of single-strand core to form electrical connection.

[0009] The wire head of the above-mentioned coil winding is wound on the winding portion of the single-strand core and is wrapped by the plastic sealing body.

[0010] The above-mentioned plastic sealing body is formed by a dipping process.

[0011] The above-mentioned 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.

[0012] The above-mentioned insertion portion extends downward from the bottom of the second bending section.

[0013] The above-mentioned power supply lead wire and the exposed single-strand core form a T-shaped structure.

[0014] The above-mentioned insertion seat is provided with a lead wire passage on the periphery of the insertion seat and the end insulation to accommodate the power supply lead wire.

[0015] The above-mentioned lead wire passage is provided with a gap on the baffle outside the lead wire passage to lead out the power supply lead wire from the gap.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. By using a single-strand core structure for the power supply lead wire, the diameter of the single-strand core is relatively large, which can be bent to support and fix the power supply lead wire, thereby replacing the terminal.

[0018] 2. The single-strand core is exposed at the end of the power supply lead wire, and the single-strand core is bent to form a winding portion that protrudes upwards, and the insertion portion protrudes below the winding portion. The insertion seat is provided on the end insulation, and a mounting hole is excavated in the top end surface of the insertion seat. The insertion portion of the single-strand core is inserted into the mounting hole of the insertion seat for fixing, and the wire head of the coil winding is wound on the winding portion of the single-strand core to form electrical connection, which can fix the power supply lead wire well and prevent the power supply lead wire from moving and affecting subsequent production.

[0019] 3. Other advantages of the utility model are described in detail in the specification. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a perspective view provided by the present application;

[0021] Fig. 2 is an exploded view provided by the present application;

[0022] Fig. 3 is an assembly diagram of the stator core and the end insulation provided by the present application;

[0023] Fig. 4 is a perspective view of the power supply lead provided by the present application;

[0024] Fig. 5 is a partial enlarged view of part B of Fig. 1. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiment one:

[0027] As shown in Figs. 1 to 5, the present embodiment provides a motor with a wiring-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 supply lead 4, wherein the stator core 1 is installed on the end insulation 2, the power supply lead 4 is installed on the end insulation 2, and the coil winding 3 is wound, characterized in that: the power supply lead 4 adopts a single-strand core structure, the single-strand core 40 is exposed at the end of the power supply lead 4, the single-strand core 40 is bent to form a winding portion 41 protruding upward, the insertion portion 42 protrudes below the winding portion 41, the insertion seat 21 is arranged on the end insulation 2, the mounting hole 22 is excavated on the top end surface of the insertion seat 21, the insertion portion 42 of the single-strand core 40 is inserted into the mounting hole 22 of the insertion seat 21 for fixation, and the wire head 31 of the coil winding 3 is wound on the winding portion 41 of the single-strand core 40 to form an electrical connection. By adopting the single-strand core structure of the power supply lead 4, the wire diameter of the single-strand core 40 is large, which can be bent to play a supporting and fixing role, thereby replacing the wiring sheet; the single-strand core 40 is exposed at the end of the power supply lead 4, the single-strand core 40 is bent to form a winding portion 41 protruding upward, the insertion portion 42 protrudes below the winding portion 41, the insertion seat 21 is arranged on the end insulation 2, the mounting hole 22 is excavated on the top end surface of the insertion seat 21, the insertion portion 42 of the single-strand core 40 is inserted into the mounting hole 22 of the insertion seat 21 for fixation, and the wire head 31 of the coil winding 3 is wound on the winding portion 41 of the single-strand core 40 to form an electrical connection, which can fix the power supply lead 4 well, so as to prevent the power supply lead 4 from moving and affecting subsequent production.

[0028] The coil winding 3 is wound on the winding part 41 of the single-core 40 and is wrapped by the plastic sealing body 5. The plastic sealing body 5 is formed by the dipping plastic process. The process is simple, and the processes such as coating, sleeving heat-shrinkable tube, and sleeving glass fiber tube can be omitted, the production efficiency can be improved, and the plastic sealing body 5 has better sealing performance.

[0029] The winding part 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, the single-core 40 has sufficient hardness to support and fix the coil winding 3, and the single-core 40 can replace the terminal sheet to reduce the manufacturing cost.

[0030] The insertion part 42 extends downward from the bottom of the second bending section 41b, and the structure is simple.

[0031] The power lead 4 and the single-core 40 exposed at the end form a T-shaped structure, and the structure is firm and has sufficient structural strength.

[0032] The lead passage 23 capable of accommodating the power lead 4 is arranged on the outer periphery of the insertion seat 21 and the end insulation 2, the power lead 4 is fixed, and the whole has high integrity.

[0033] The gap 25 is arranged on the baffle 24 outside the lead passage 23, the power lead 4 is led out from the gap 25, the structure is simple, and the power lead 4 is conveniently led out.

[0034] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited to this, any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the utility model, equivalent replacement, and all are included in the protection scope of the utility model.

Claims

1. A motor with a non-connecting lug structure, comprising a stator assembly (100) and a rotor assembly, wherein the stator assembly (100) comprises a stator core (1), end insulation (2), coil windings (3), and power leads (4), wherein after the end insulation (2) is installed on the stator core (1), the power leads (4) are installed on the end insulation (2), and then the coil windings (3) are wound around it, 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 an upwardly protruding winding part (41). An insertion part (42) protrudes below the winding part (41). A plug-in seat (21) is provided on the end insulation (2). A mounting hole (22) is carved out on the top surface of the plug-in seat (21). The insertion part (42) of the single-strand core (40) is inserted into the mounting hole (22) of the plug-in seat (21) for fixation. The wire end (31) of the coil winding (3) is wound on the winding part (41) of the single-strand core (40) to form an electrical connection.

2. The motor with a connector-free structure according to claim 1, characterized in that: The end (31) of the coil winding (3) is wound on the winding part (41) of the single strand core (40) and wrapped by the encapsulation (5).

3. The motor with a connector-free structure according to claim 2, characterized in that: The encapsulated body (5) is formed by dip molding process.

4. A motor with a connector-free structure according to claim 1, 2, or 3, characterized in that: The winding section (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).

5. A motor with a connector-free structure according to claim 4, characterized in that: The insertion part (42) extends downward from the bottom of the second bend (41b).

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

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

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

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