Motor stator outgoing line fixing structure

Abstract

The invention discloses a motor stator leading-out wire fixing structure, and belongs to the technical field of motors, the motor stator leading-out wire fixing structure comprises a three-phase leading-out wire bound with a stator winding, the stator winding is installed on a stator core, the stator core and the stator winding are located in a protective cover, the three-phase leading-out wire extends out of the protective cover, and the three-phase leading-out wire is fixed on the protective cover. The three-phase outgoing line and the stator winding are mutually fixed through a plurality of binding and limiting parts, each binding and limiting part comprises a first clamping ring and a second clamping ring, and the end parts of the first clamping rings and the second clamping rings extend outwards to form guide side lugs. According to the motor stator outgoing line fixing structure, the firmness of connection between the winding and the outgoing line can be improved by arranging the binding structure, normal ventilation of a bound and shielded area can be facilitated by arranging the ventilation component, and the air flow rate of the shielded area can be accelerated by utilizing the power component through vibration of motor work, so that the motor stator outgoing line fixing structure is more stable. And the local overheating phenomenon is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of electric motors, and in particular to a motor stator lead wire fixing structure. Background Art

[0002] The production of motor stators basically uses automatic winding machines. Automatic winding is to wrap an enameled wire around the stator teeth by machine, and then insulate the stator core with insulating paper and end plates or an integrated stator bobbin. Finally, the three-phase lead wires are led out. In order to ensure a stable connection between the three-phase lead wires and the stator, a fixing structure is usually used to fix the lead wires.

[0003] For example, the Chinese patent with the announcement number: CN213521448U, the patent name: A structure for fixing the stator lead wire of a machine-wound motor, and the announcement date: 2021-06-22, includes a winding bracket, a stator lead wire and a nylon tie. The stator lead wire is fastened to the wire-blocking side wall of the winding bracket through the nylon tie. The winding bracket is provided with an annular wire-blocking side wall. The wire-blocking side wall is provided with a plurality of inlet and outlet notches of different heights for the stator lead wire to enter and exit. The two adjacent inlet and outlet notches form a plurality of protrusions on the wire-blocking side wall. The protrusion is provided with a side wall groove for limiting and fastening the nylon tie, and the bottom of the winding bracket is provided with a bracket bottom surface groove.

[0004] Among them, the above-mentioned prior art has the following technical problems: the existing fixing structure limits the lead wire by setting a nylon strap when fixing it. Although the nylon strap can play a limiting role, after the nylon strap is used to bind the lead wire and the stator winding, the bound area is always in a blocked state, resulting in the bound area being unable to obtain good ventilation and heat dissipation, which in turn causes the stator winding and the lead wire in the bound area to locally overheat when the motor works for a long time.

[0005] Therefore, we propose a motor stator lead wire fixing structure to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a motor stator lead wire fixing structure to solve the problem proposed in the above background technology that the existing fixing structure on the market currently uses nylon straps to limit the lead wires when fixing them. Although the nylon straps can play a limiting role, after the nylon straps are used to bind the lead wires and the stator windings, the bound areas are always in a blocked state, which results in the inability to obtain good ventilation and heat dissipation in the bound areas, and further causes the stator windings and lead wires in the bound areas to be locally overheated when the motor works for a long time.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a motor stator lead wire fixing structure, comprising a three-phase lead wire bound to a stator winding, the stator winding being mounted on a stator core, and the stator core and the stator winding being located inside a protective cover, the three-phase lead wire extending to the outside of the protective cover, the three-phase lead wire and the stator winding being fixed to each other by a plurality of binding and limiting components, and the binding and limiting components comprising a first clamping ring and a second clamping ring, the ends of the first clamping ring and the second clamping ring extending outward to form guide side ears, and the guide side ears being provided with holes for fasteners to pass through, positioning blocks being fixed on the first clamping ring and the second clamping ring, and a guide notch being provided on the edge of the positioning block, the guide notch being used to connect the interior of the positioning block with the external space, so that the airflow can circulate normally, and prevent the fixed area from being blocked and causing local overheating.

[0008] Preferably, a pin is installed between the ends of the first clamping ring and the second clamping ring, and the first clamping ring and the second clamping ring form a hinged connection structure through the pin at the ends.

[0009] By adopting the above technical solution, the first clamping ring and the second clamping ring are hingedly connected, thereby facilitating wrapping the first clamping ring and the second clamping ring around the outside of the stator core and the lead wire.

[0010] Preferably, the positioning block is configured as an arc-shaped structure, and the curvature of the positioning block is the same as the curvature of the first clamping ring or the second clamping ring, and a plurality of guide notches are evenly distributed on the side of the positioning block.

[0011] By adopting the above technical solution, when the first clamping ring and the second clamping ring are rotated and closed, the positioning block can be used to fix and limit the stator winding and the three-phase lead-out wires. The flow guide notches evenly distributed on the side of the positioning block can improve the flow effect between the positioning block and the external air.

[0012] Preferably, a power component is installed in the middle of the first clamping ring and the second clamping ring, and the power component is driven by the high-frequency vibration generated when the motor is working. The power component is used to accelerate the flow rate of the air inside the positioning block.

[0013] By adopting the above technical solution, when the motor is working, its internal components vibrate, and the vibration enables the power components to continue working without the need for additional power supply or mechanical components for control, which is more energy-saving and environmentally friendly.

[0014] Preferably, the power component includes a clamping column installed on the first clamping ring or the second clamping ring, and the surface of the clamping column is recessed inward to form an inner recess, the clamping column is connected to the accommodating groove opened inside the clamping ring, and the first clamping ring, the second clamping ring and the positioning block are all provided with air outlet holes, a piston block is provided inside the clamping column, and a blocking block fixed to the inside of the clamping column is provided at the upper end of the piston block, a baffle plate is provided below the piston block, and the baffle plate is connected to the clamping column through a memory metal wire, the piston block is connected to the clamping column through an auxiliary spring, and an extrusion frame is fixed to the middle part of the lower end of the piston block, and an elastic block is provided on the side of one end of the extrusion frame extending out of the piston block, the elastic block is fixed to the side of the clamping ring, and a blowing side hole is provided on the elastic block.

[0015] By adopting the above technical solution, the auxiliary spring can be provided to enable the piston block to return to its original position and rebound after moving inside the clamping column.

[0016] Preferably, a plurality of inner recesses are evenly distributed on the surface of the clamping column, and the blocking block inside the clamping column fits with the piston block in the initial state, and the clamping column is made of heat-absorbing material.

[0017] By adopting the above technical solution, the heat absorption effect of the clamping column can be improved by evenly distributing the inner recesses on the surface of the clamping column.

[0018] Preferably, the piston block can slide inside the clamping column, and the lower end of the piston block is in contact with the baffle plate, and the baffle plate can also move inside the clamping column under the deformation and stretching of the memory wire.

[0019] By adopting the above technical solution, in the initial state, the piston block can be blocked by the setting of the baffle plate to limit the movement of the piston block. When the heat is too high, the memory metal wire contracts due to the heat and pulls the baffle plate to move, thereby releasing the restriction on the piston block. In the initial state, the blocking block and the baffle plate block the piston block. When heat dissipation is not required, the vibration during the operation of the motor cannot cause the piston plate to move, so that when heat dissipation is not required, the auxiliary spring will not undergo invalid deformation.

[0020] Preferably, one end of the extrusion frame extending out of the clamping column is in contact with the elastic block, and the elastic block is configured as an elastic rubber block with a hollow structure in the middle.

[0021] By adopting the above technical solution, when the extrusion frame moves, it can squeeze and push the elastic block that is arranged in a close relationship.

[0022] Preferably, a plurality of holes are evenly distributed on a side of the elastic block away from the clamping ring, and the internal cavity of the elastic block is connected to the outside through the holes.

[0023] By adopting the above technical solution, when the elastic block is compressed, the internal air flow can be squeezed out through the holes, and at the same time, the elastic block can automatically reset itself when not under pressure by utilizing its own elasticity.

[0024] Compared with the prior art, the present invention has the following advantages: the motor stator lead wire fixing structure can improve the firmness of the connection between the winding and the lead wire by providing a binding structure, and at the same time, by providing a ventilation component, it can facilitate normal ventilation of the bound and blocked area. The vibration of the motor operation can also be used to accelerate the air flow rate in the blocked area by using the power component to prevent local overheating. 1. A first clamp ring and a second clamp ring are provided. The first clamp ring and the second clamp ring are wrapped around the outside of the stator core and the three-phase lead wires, so that the three-phase lead wires are fixed by the positioning blocks inside the first clamp ring and the second clamp ring. At the same time, a guide notch is opened on the side of the positioning block. The setting of the guide notch can facilitate air circulation and prevent local overheating caused by the blocked area being unable to ventilate normally; 2. A clamping column is provided. In the initial state, the blocking block and the baffle plate block the piston block. When heat dissipation is not required, the vibration during the operation of the motor cannot cause the piston plate to move, thereby preventing the auxiliary spring from being deformed ineffectively when heat dissipation is not required. 3. An air outlet is provided. When the temperature of the stator winding and the three-phase lead-out wire area is too high, the clamping column absorbs heat and transfers it to the memory metal wire. The memory metal wire shrinks after absorbing heat and pulls the baffle plate to move. When the baffle plate moves, the obstruction of the piston block is released. At this time, the vibration of the motor can make the piston block move back and forth. The movement of the piston block can frequently squeeze the air flow inside the accommodating groove. At this time, the air flow can be discharged outward through the air outlet, thereby further accelerating the air flow rate inside the positioning block. At the same time, after the piston block moves, the extrusion frame can squeeze the elastic block. After the elastic block is compressed, the internal air flow can be squeezed outward through the side blowing side holes, thereby also increasing the air flow rate in the positioning winding and the unfixed area of ​​the three-phase lead-out wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-phase lead wire and protective shell structure of the present invention; Figure 2 This is a schematic diagram of the three-phase lead wire and stator winding structure of the present invention; Figure 3 This is a schematic structural diagram of the first and second clasping rings of the present invention; Figure 4 This is a schematic diagram of the structure of the clamping column and the inner recess of the present invention; Figure 5 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 6 This is a schematic diagram of the exploded structure of the second clamping ring and positioning block of the present invention; Figure 7 This is a schematic diagram of the second clamping ring and the air outlet structure of the present invention; Figure 8 This is a schematic structural diagram of the piston block and the blocking block of the present invention; Figure 9 This is a schematic diagram of the structure of the baffle plate and memory wire of the present invention.

[0026] In the figure: 1. three-phase lead-out wire; 2. stator winding; 3. stator core; 4. protective cover; 5. binding limit component; 501. first clamping ring; 502. second clamping ring; 503. guide side ear; 504. positioning block; 505. guide gap; 6. power component; 601. clamping column; 602. inner recess; 603. accommodating groove; 604. air outlet; 605. piston block; 606. blocking block; 607. baffle plate; 608. memory wire; 609. auxiliary spring; 610. extrusion frame; 611. elastic block; 612. blowing side hole. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0028] Example 1: Please refer to Figures 1-9The existing fixing structure limits the lead wire by setting a nylon strap when fixing the lead wire. Although the nylon strap can play a limiting role, after the nylon strap is used to bind the lead wire and the stator winding 2, the bound area is always in a blocked state, which makes it impossible for the bound area to be well ventilated and heat-dissipated, and then causes the stator winding 2 and the lead wire in the bound area to be locally overheated when the motor works for a long time. In order to solve the technical problem, the following technical content is disclosed in this embodiment: a motor stator lead wire fixing structure, including a three-phase lead wire 1 bound to the stator winding 2, the stator winding 2 is installed on the stator core 3, and the stator core 3 and the stator winding 2 are located inside the protective cover 4, the three-phase lead wire 1 extends to the outside of the protective cover 4, the three-phase lead wire 1 and the stator winding 2 are fixed to each other by multiple binding limiting components 5, and the binding limiting component 5 includes a first clamp Ring 501 and the second snap ring 502, the ends of the first snap ring 501 and the second snap ring 502 extend outward to form a guide side ear 503, and the guide side ear 503 is provided with a hole for the fastener to pass through. The first snap ring 501 and the second snap ring 502 are both fixed with a positioning block 504, and the edge of the positioning block 504 is provided with a guide notch 505. The guide notch 505 is used to connect the interior of the positioning block 504 with the external space so that the airflow can circulate normally and prevent the fixed area from being blocked and causing local overheating. A pin is installed between the ends of the first snap ring 501 and the second snap ring 502, and the first snap ring 501 and the second snap ring 502 form a hinged connection structure through the pin at the end. The positioning block 504 is set to an arc structure, and the curvature of the positioning block 504 is the same as the curvature of the first snap ring 501 or the second snap ring 502, and a plurality of guide notches 505 are evenly distributed on the side of the positioning block 504.

[0029] When fixing the three-phase lead-out wire 1, the first clamping ring 501 and the second clamping ring 502 are clamped on the outside of the stator winding 2 and the three-phase lead-out wire 1, and then the bolts are passed through the screw holes on the guide side ears 503, and the three-phase lead-out wire 1 and the stator winding 2 are fixed by the positioning blocks 504 on the first clamping ring 501 and the second clamping ring 502. At the same time, a guide gap 505 is provided on the side of the positioning block 504. Through the setting of the guide gap 505, the air inside the positioning block 504 can circulate through the guide gap 505, thereby avoiding the blocking area from being unable to be ventilated and dissipated in time after the positioning block 504 blocks the stator winding 2 and the three-phase lead-out wire 1, resulting in local overheating.

[0030] Example 2: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned Example 1. The following technical content is disclosed in this embodiment, such as Figure 6-Figure 9As shown, the middle of the first clamping ring 501 and the second clamping ring 502 are both equipped with a power component 6, and the power component 6 is driven by the high-frequency vibration generated when the motor is working. The power component 6 is used to accelerate the flow rate of the air inside the positioning block 504. The power component 6 includes a clamping column 601 installed on the first clamping ring 501 or the second clamping ring 502, and the surface of the clamping column 601 is concave inward to form an inner concave portion 602. The clamping column 601 is connected to the accommodating groove 603 opened inside the clamping ring. The first clamping ring 501, the second clamping ring 502 and the positioning block 504 are all provided with an air outlet 604, a piston block 605 is provided inside the clamping column 601, and the upper end of the piston block 605 is provided with a blocking block 606 fixed inside the clamping column 601, a baffle plate 607 is provided below the piston block 605, and the baffle plate 607 is connected to the clamping column 601 through a memory wire 608, the piston block 605 is connected to the clamping column 601 through an auxiliary spring 609, and the lower end of the piston block 605 is provided with a baffle plate 607. An extrusion frame 610 is fixed in the middle of the end, and an elastic block 611 is provided on the side of one end of the extrusion frame 610 extending out of the piston block 605. The elastic block 611 is fixed to the side of the clamping ring, and a blowing side hole 612 is provided on the elastic block 611. A plurality of inner concave portions 602 are evenly distributed on the surface of the clamping column 601, and the blocking block 606 inside the clamping column 601 fits with the piston block 605 in the initial state. The clamping column 601 is made of heat-absorbing material, and the piston block 605 can be The parts slide, and the lower end of the piston block 605 fits with the baffle plate 607, and the baffle plate 607 can also move inside the clamping column 601 under the deformation and stretching of the memory wire 608. The end of the extrusion frame 610 extending out of the clamping column 601 fits with the elastic block 611, and the elastic block 611 is set as an elastic rubber block with a hollow structure in the middle. A plurality of holes are evenly distributed on the side of the elastic block 611 away from the clamping ring, and the internal cavity of the elastic block 611 is connected to the outside through the holes.

[0031] In the initial state, the piston block 605 is blocked by the blocking block 606 and the baffle plate 607. When the temperature of the stator winding 2 and the three-phase lead wire 1 area is normal, the vibration generated by the motor operation will not cause the piston block 605 to move. When the temperature is appropriate, the auxiliary spring 609 will not be elastically deformed, preventing the auxiliary spring 609 from frequent and meaningless deformation, which may lead to fatigue failure. When the temperature is abnormal, the clamping column 601 can transfer the heat to the memory metal wire 608 after absorbing heat, and improve the heat absorption efficiency of the clamping column 601 through the inner recess 602 on the surface of the clamping column 601. The memory metal wire 608 shrinks after absorbing heat, thereby pulling the baffle plate 607 to move away from the piston block 605. The vibration of the motor operation can then make the active The piston block 605 performs high-frequency reciprocating movement inside the clamping column 601. Since the clamping column 601 and the accommodating groove 603 inside the clamping ring are connected to each other, when the piston block 605 performs reciprocating movement, the air flow inside the accommodating groove 603 can be squeezed outward through the air outlet 604. The air intake and suction through the air outlet 604 can increase the air flow rate inside the positioning block 504. At the same time, after the piston block 605 moves, the extrusion frame 610 can move synchronously. After the extrusion frame 610 moves, it can also frequently squeeze the elastic block 611. When the elastic block 611 is pressurized, the internal air flow can also be ejected outward through the side blowing side holes 612. It can also accelerate the air flow rate in the area where the stator winding 2 and the three-phase lead wire 1 are not fixed and blocked, which facilitates faster heat dissipation and cooling.

[0032] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor stator lead wire fixing structure, comprising a three-phase lead wire (1) bound to a stator winding (2), wherein the stator winding (2) is mounted on a stator core (3), and the stator core (3) and the stator winding (2) are located inside a protective cover (4), and the three-phase lead wire (1) extends outside the protective cover (4), characterized in that: The three-phase lead wire (1) and the stator winding (2) are fixed to each other via a plurality of binding and limiting components (5), and the binding and limiting components (5) include a first clamping ring (501) and a second clamping ring (502), the ends of the first clamping ring (501) and the second clamping ring (502) extend outward to form guide side ears (503), and the guide side ears (503) are provided with holes for fasteners to pass through, and the first clamping ring (501) and the second clamping ring (502) are both fixed with positioning blocks (504), and the edges of the positioning blocks (504) are provided with guide notches (505), and the guide notches (505) are used to connect the interior of the positioning block (504) with the exterior space, so that airflow can circulate normally, thereby preventing the fixed area from being blocked and causing local overheating.

2. The motor stator lead wire fixing structure according to claim 1, characterized in that: A pin is installed between the ends of the first clamping ring (501) and the second clamping ring (502), and the first clamping ring (501) and the second clamping ring (502) form a hinged connection structure through the pin at the ends.

3. The motor stator lead wire fixing structure according to claim 1, characterized in that: The positioning block (504) is configured as an arc-shaped structure, and the arc of the positioning block (504) is the same as the arc of the first clamping ring (501) or the second clamping ring (502), and a plurality of guide notches (505) are evenly distributed on the side of the positioning block (504).

4. The motor stator lead wire fixing structure according to claim 1, characterized in that: A power component (6) is installed in the middle of each of the first clamping ring (501) and the second clamping ring (502), and the power component (6) is driven by high-frequency vibration generated when the motor is working. The power component (6) is used to accelerate the flow rate of air inside the positioning block (504).

5. The motor stator lead wire fixing structure according to claim 4, characterized in that: The power component (6) includes a clamping column (601) mounted on a first clamping ring (501) or a second clamping ring (502), and the surface of the clamping column (601) is recessed inward to form an inner concave portion (602), the clamping column (601) is in communication with a receiving groove (603) provided inside the clamping ring, the first clamping ring (501), the second clamping ring (502) and the positioning block (504) are all provided with an air outlet (604), a piston block (605) is provided inside the clamping column (601), and a blocking block (605) is provided at the upper end of the piston block (605) fixed inside the clamping column (601). 06), a baffle plate (607) is provided below the piston block (605), and the baffle plate (607) is connected to each other through a memory wire (608) and a clamping column (601), the piston block (605) is connected to each other through an auxiliary spring (609) and a clamping column (601), and an extrusion frame (610) is fixed to the middle of the lower end of the piston block (605), and an elastic block (611) is provided on the side of one end of the extrusion frame (610) extending out of the piston block (605), the elastic block (611) is fixed to the side of the clamping ring, and a blowing side hole (612) is opened on the elastic block (611).

6. The motor stator lead wire fixing structure according to claim 5, characterized in that: A plurality of inner recesses (602) are evenly distributed on the surface of the clamping column (601), and the blocking block (606) inside the clamping column (601) fits with the piston block (605) in the initial state, and the clamping column (601) is made of a heat-absorbing material.

7. The motor stator lead wire fixing structure according to claim 5, characterized in that: The piston block (605) can slide inside the clamping column (601), and the lower end of the piston block (605) is in contact with the baffle plate (607), and the baffle plate (607) can also move inside the clamping column (601) under the deformation and stretching of the memory metal wire (608).

8. The motor stator lead wire fixing structure according to claim 5, characterized in that: One end of the extrusion frame (610) extending outside the clamping column (601) is fitted with the elastic block (611), and the elastic block (611) is configured as an elastic rubber block with a hollow structure in the middle.

9. The motor stator lead wire fixing structure according to claim 5, characterized in that: A plurality of holes are evenly distributed on a side of the elastic block (611) away from the clamping ring, and the internal cavity of the elastic block (611) is in communication with the outside world through the holes.

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