Microminiature coreless motor winding formed by winding multiple strands of wires

Abstract

The invention discloses a microminiature coreless motor winding formed by winding a plurality of strands of wires, and belongs to the technical field of motor windings. A coil winding is pushed into the inner side of a coil connecting plate, a handle is lifted up to drive a sliding seat to move upwards, the sliding seat drives a pressing plate to move upwards through a sliding block, the pressing plate can be tightly attached to the inner wall of the coil winding, and the coil winding is wound into the coil connecting plate. When a clamping block and a clamping groove in the locking assembly are located on the same horizontal plane, a sliding plate is supported through the elastic force of a spring, so that the sliding plate drives the clamping block to be clamped into the clamping groove, and the purpose of locking the positions of the sliding base and a pressing plate is achieved; similarly, the positions of the remaining sliding seats are adjusted to enable the pressing plates to push and press the inner wall of the coil winding, so that the coil winding is firmly locked on the inner side of the coil connecting plate, the situation that the coil winding deviates or deforms due to the fact that the coreless motor is collided or the end of the coil winding is pulled is prevented, and the use stability of the coreless motor is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of motor windings, and in particular relates to a micro hollow cup motor winding wound by multiple strands of conducting wires. Background Art

[0002] Coreless motors are DC permanent magnet servo and control motors, and can also be classified as micro motors. Coreless motors have outstanding energy-saving characteristics, sensitive and convenient control characteristics, and stable operating characteristics, and their technological advancement is very obvious.

[0003] The hollow cup motor has no iron core rotor and the coil looks like a cup, so it is called a hollow cup motor. The hollow cup motor is relatively special among DC motors. It can be a brushed motor or a brushless motor. The brushed DC motor is a coil, commutator and connecting plate that rotate between the casing and the permanent magnet, and they together form the rotor. The coil of the brushless motor is fixed, and the magnet rotates in the middle and is also the rotor.

[0004] At present, the coil windings of existing small hollow cup brushless DC motors are all made of single-strand enameled wire. When the diameter of the enameled wire exceeds a certain value, the required winding force is relatively large, and it is easy to produce inter-turn gaps. The produced windings are relatively loose and it is difficult to meet the relevant parameter requirements of high-performance motors; and after the enameled wire is wound, the lead wire will be directly transferred to the winding when it is pulled. Moreover, the winding is wound with multiple strands of wire. When the motor is hit by external force, it will cause the winding to shift or deform, thereby affecting the stability of the motor. Summary of the invention

[0005] In order to overcome the above-mentioned defects, the present invention provides a micro hollow cup motor winding wound by multiple strands of conductive wire, which solves the problem that the coil windings of existing small hollow cup brushless DC motors are all wound by single strand of enameled wire. When the diameter of the enameled wire exceeds a certain value, the required winding force is relatively large, and it is easy to produce gaps between turns. The manufactured winding is relatively loose, which is difficult to meet the relevant parameter requirements of high-performance motors. Moreover, after the enameled wire is wound, the traction force will be directly transmitted to the winding when the lead wire is pulled. Moreover, the winding is wound by multiple strands of conductive wire, and the problem that the winding will be offset or deformed when the motor is hit by external force.

[0006] The purpose of the present invention is to push the inner wall of the coil winding by multiple pressing plates, so that the coil winding is firmly locked on the inner side of the coil connecting plate, to prevent the hollow cup motor from being hit or the end of the coil winding from being pulled, causing the coil winding to deviate or deform, and to ensure the stability of the hollow cup motor;

[0007] When removing the coil winding, by squeezing the two handles, the two L-shaped blocks respectively drive the two slides closer to each other, and the slides drive the card blocks out of the card slots, the locking state of the slide seat and the pressure plate can be released, and the slide seat is moved by the handle to slide in the limit slot, so that the pressure plate can be away from the coil winding. Similarly, the positions of other slide seats are adjusted, so that the coil winding is conveniently removed from the coil connection plate, which improves the convenience of operation;

[0008] By inserting the conductive wire connected in the coil winding into the conductive sleeve, tightening the locking screw to fix the conductive wire in the conductive sleeve, since the guide block on the conductive sleeve is installed through the coil connection plate, when wiring is performed, it is possible to operate in the perforation at the end of the guide block. When the external power line of the motor is pulled, the traction force generated directly acts on the guide block, and the generated force does not directly act on the coil winding, thereby preventing the coil winding from being deformed or displaced by the pulling, and ensuring the stable operation of the coil winding;

[0009] The coil winding is made of multiple strands of small-diameter enameled wire wound in parallel, which can meet the design requirements of high current and high power density motors within a limited space.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a micro hollow cup motor winding wound by multiple strands of wire, comprising a coil winding, one side of the coil winding is connected to a coil connection plate, the middle part of the coil connection plate is clamped with a bearing seat, a main shaft is sleeved in the bearing seat, the main shaft is arranged through the middle part of the coil connection plate, a commutator is installed between the main shaft and the coil connection plate, the commutator is located in the coil winding, two sides of the inner wall of the coil winding are respectively connected to conductive wires, the ends of the conductive wires are plugged with conductive components, a wiring groove is opened on the outer side of the coil connection plate at a position corresponding to the conductive component, and the end of the conductive component penetrates the coil connection plate and is installed in the wiring groove;

[0011] The outer wall of the coil connecting plate is provided with four grooves at equal intervals, a limiting groove is provided at the bottom of the groove, and a plurality of clamping grooves are provided on both sides of the inner wall of the groove, a limiting component is installed in the groove, the limiting component is slidably connected in the limiting groove, slideways are provided on both sides of the limiting component, a locking component is installed in the slideway, a sliding hole is provided at a position corresponding to the locking component on the coil connecting plate, the locking component slides through the sliding hole, and the end of the locking component is clamped in the clamping groove.

[0012] As a further solution of the present invention: a rubber coating layer is provided on one side of the coil winding, a plurality of branch lines are provided in the rubber coating layer, and ends of the plurality of branch lines are connected to the coil winding.

[0013] As a further solution of the present invention: the coil winding is made by winding a plurality of small-diameter enameled wires in parallel, and the coil winding is of hollow design.

[0014] As a further solution of the present invention: the conductive component includes a conductive sleeve, which is installed on the inner side of the coil connecting plate, and the end of the conductive wire is inserted into the conductive sleeve. A locking screw is threadedly connected to the conductive sleeve, and the end of the locking screw is connected to the conductive wire.

[0015] As a further solution of the present invention: a guide block is fixedly connected to one side of the conductive sleeve, the guide block is installed through the coil connecting plate, and a through hole is opened at the end of the guide block and is located in the wiring groove.

[0016] As a further solution of the present invention: the limiting assembly includes a slide seat, which is slidably connected in the limiting groove, a slider is fixedly connected to one side of the slide seat, a pressure plate is fixedly connected to the slider, the pressure plate is arc-shaped and its outer wall overlaps the inner wall of the coil winding, and a handle is fixedly connected to the slide seat.

[0017] As a further solution of the present invention: the locking assembly includes a slide plate, which is slidably connected in the slideway, a block is fixed on one side of the slide plate, the block is engaged in the slot, and a spring is fixedly connected to the side of the slide plate away from the slider, and the end of the spring is fixed to the inner wall of the slideway.

[0018] As a further solution of the present invention: an L-shaped block is fixedly connected to the skateboard, the L-shaped block passes through the slideway and is arranged on the limit assembly, a handle is fixedly connected to one side of the L-shaped block, and one side of the block is inclined.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the coil winding is pushed into the inner side of the coil connecting plate so that the coil winding is located between the limit assembly and the inner wall of the coil connecting plate, and the slide is driven to move upward by lifting the handle, so that the slide drives the pressure plate to move upward through the slider, so that the pressure plate can fit tightly with the inner wall of the coil winding, and the locking assembly will be driven to move synchronously during the upward movement of the slide. When the card block in the locking assembly is at the same level as the card slot, the slide plate is supported by the elastic force of the spring, so that the slide plate drives the card block to be stuck in the card slot, thereby achieving the purpose of locking the position of the slide seat and the pressure plate. Similarly, the position of the remaining slide seats is adjusted so that multiple pressure plates can press against the inner wall of the coil winding. Push and press to lock the coil winding firmly on the inner side of the coil connecting plate, prevent the hollow cup motor from being hit or the end of the coil winding from being pulled, causing the coil winding to deviate or deform, and ensure the stability of the hollow cup motor. When removing the coil winding, squeeze the two handles to make the two L-shaped blocks drive the two slides closer to each other, so that the slide drives the card block out of the slot, and the locking state of the slide seat and the pressure plate can be released. Move the slide seat through the handle to make it slide in the limit slot so that the pressure plate can be away from the coil winding. Similarly, adjust the position of other slide seats to facilitate the removal of the coil winding from the coil connecting plate and improve the convenience of operation.

[0021] 2. In the present invention, the conductive wire connected in the coil winding is inserted into the conductive sleeve, and the locking screw is tightened to fix the conductive wire in the conductive sleeve. Since the guide block on the conductive sleeve is installed through the coil connecting plate, when wiring is performed, operation can be performed in the perforation at the end of the guide block. When the external power line of the motor is pulled, the traction force generated directly acts on the guide block, and the generated force does not directly act on the coil winding, preventing the coil winding from being deformed or displaced by the pulling, thereby ensuring the stable operation of the coil winding. The coil winding is made of multiple strands of small-diameter enameled wires wound in parallel, which can meet the design requirements of large current and high power density motors within a limited space size. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the side view of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the cross section of the coil winding of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a coil connection plate of the present invention from a side view;

[0026] Figure 5 It is a structural schematic diagram of the conducting component of the present invention;

[0027] Figure 6It is a structural schematic diagram of a partial cross section of a coil connecting plate of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the limit assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the locking assembly of the present invention;

[0030] Fig. 9 It is a schematic diagram of the enlarged structure inside the coil winding of the present invention;

[0031] In the figure: 1. coil winding; 2. coil connecting plate; 3. bearing seat; 4. main shaft; 5. commutator; 6. rubber coating layer; 7. branch line; 8. conduction line; 9. conduction component; 901. conductive sleeve; 902. locking screw; 903. guide block; 904. perforation; 10. wiring slot; 11. groove; 12. sliding hole; 13. limit slot; 14. clamping slot; 15. limit assembly; 151. slide seat; 152. slider; 153. pressure plate; 154. handle; 16. slideway; 17. locking assembly; 171. slide plate; 172. clamping block; 173. L-shaped block; 174. handle; 175. spring. DETAILED DESCRIPTION

[0032] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0033] like Figure 1-9 As shown, the present invention provides a technical solution: a micro hollow cup motor winding wound by multiple strands of wire, comprising a coil winding 1, a rubber coating layer 6 is provided on one side of the coil winding 1, a plurality of branch wires 7 are provided in the rubber coating layer 6, and the ends of the plurality of branch wires 7 are connected to the coil winding 1, the coil winding 1 is made of multiple strands of small-diameter enameled wires wound in parallel, so that the design requirements of a motor with high current and high power density can be met within a limited space size, and the coil winding 1 is a hollow design;

[0034] A coil connection plate 2 is connected to one side of the coil winding 1, a bearing seat 3 is clamped in the middle of the coil connection plate 2, a main shaft 4 is sleeved in the bearing seat 3, the main shaft 4 is supported by the bearing seat 3 to improve the rotation stability of the main shaft 4, the main shaft 4 is arranged through the middle of the coil connection plate 2, a commutator 5 is installed between the main shaft 4 and the coil connection plate 2, and the commutator 5 is located in the coil winding 1;

[0035] The two sides of the inner wall of the coil winding 1 are respectively connected with a conducting wire 8, and the end of the conducting wire 8 is plugged with a conducting component 9. A wiring groove 10 is opened on the outer side of the coil connecting plate 2 at a position corresponding to the conducting component 9. The end of the conducting component 9 penetrates the coil connecting plate 2 and is installed in the wiring groove 10. The conducting component 9 includes a conductive sleeve 901, which is installed on the inner side of the coil connecting plate 2. The end of the conducting wire 8 is plugged into the conductive sleeve 901. A locking screw 902 is threadedly connected on the conductive sleeve 901, and the end of the locking screw 902 is connected to the conducting wire 8. The conducting wire 8 connected in the coil winding 1 is inserted into the conductive sleeve 901, and the locking screw 902 is tightened to fix the conducting wire 8 in the conductive sleeve 901, so as to limit the conducting wire 8 and improve the stability of current transmission.

[0036] A guide block 903 is fixedly connected to one side of the conductive sleeve 901. The guide block 903 is installed through the coil connecting plate 2. A through hole 904 is provided at the end of the guide block 903 and is located in the wiring groove 10. Since the guide block 903 on the conductive sleeve 901 is installed through the coil connecting plate 2, when wiring, operations can be performed in the through hole 904 at the end of the guide block 903. When the external power line of the motor is pulled, the traction force generated directly acts on the guide block 903 to prevent the coil winding 1 from being deformed or displaced due to pulling.

[0037] The outer wall of the coil connection plate 2 is equidistantly provided with four grooves 11, the bottom of the groove 11 is provided with a limit groove 13, and the inner walls of the groove 11 are provided with a plurality of slots 14 on both sides thereof. A limit assembly 15 is installed in the groove 11, and the limit assembly 15 is slidably connected in the limit groove 13. The limit assembly 15 includes a slide seat 151, and the slide seat 151 is slidably connected in the limit groove 13. A slider 152 is fixedly connected to one side of the slide seat 151, and a pressure plate 153 is fixedly connected to the slider 152, and the pressure plate 153 is an arc-shaped device. The outer wall overlaps the inner wall of the coil winding 1, and a handle 154 is fixedly connected to the slide 151. Since a pressing plate 153 is provided, the slide 151 drives the pressing plate 153 to move upward through the slider 152, so that the pressing plate 153 can fit closely with the inner wall of the coil winding 1. The multiple pressing plates 153 push the inner wall of the coil winding 1, so that the coil winding 1 is firmly locked on the inner side of the coil connecting plate 2, so as to prevent the hollow cup motor from being hit or the end of the coil winding 1 from being pulled, causing the coil winding 1 to deviate or deform.

[0038] Slideways 16 are respectively provided on both sides of the limit assembly 15, and a locking assembly 17 is installed in the slideway 16. A sliding hole 12 is provided at a position corresponding to the locking assembly 17 on the coil connecting plate 2. The locking assembly 17 penetrates and slides in the sliding hole 12, and the end of the locking assembly 17 is clamped in the card slot 14. The locking assembly 17 includes a slide plate 171, which is slidably connected in the slideway 16. A clamping block 172 is fixed on one side of the slide plate 171, and the clamping block 172 is clamped in the card slot 14. A spring 175 is fixedly connected to the side of the slide plate 171 away from the slider 152, and the end of the spring 175 is fixed to the inner wall of the slideway 16. Because the spring 175 is provided, the slide plate 171 is supported by the elastic force of the spring 175, so that the slide plate 171 drives the clamping block 172 to be clamped in the card slot 14, so as to facilitate the locking of the position of the slide seat 151 and the pressure plate 153;

[0039] An L-shaped block 173 is fixedly connected to the slide 171, and the L-shaped block 173 passes through the slide 16 and is arranged on the limit assembly 15. A handle 174 is fixedly connected to one side of the L-shaped block 173, and one side of the clamping block 172 is inclined. By squeezing the two handles 174, the two L-shaped blocks 173 respectively drive the two slides 171 to approach each other, so that the slide 171 drives the clamping block 172 to disengage from the clamping slot 14, and the locking state of the slide 151 and the pressure plate 153 can be released, so that the position of the slide 151 can be adjusted conveniently, and the slide 151 can be limited by cooperating with the limit slot 13 to improve the movement stability of the slide 151.

[0040] The working principle of the present invention is:

[0041] When separating the coil winding 1 and the coil connecting plate 2, squeeze the two handles 174 so that the two L-shaped blocks 173 respectively drive the two slide plates 171 to approach each other, so that the slide plate 171 drives the clamping block 172 to disengage from the clamping groove 14, and the locking state of the slide seat 151 and the pressing plate 153 can be released. Move the slide seat 151 through the handle 174 to make it slide in the limiting groove 13, so that the pressing plate 153 can be away from the coil winding 1. Similarly, adjust the position of the other slide seats 151, so as to separate the coil winding 1 and the coil connecting plate 2. The coil winding 1 is removed from the coil connection plate 2. At this time, the two conductive wires 8 on the coil winding 1 are still connected to the conductive sleeve 901. The locking screw 902 is loosened in the hole between the coil winding 1 and the coil connection plate 2 to remove the conductive wire 8 from the conductive sleeve 901. When assembling the coil winding 1 and the coil connection plate 2, the conductive wire 8 connected in the coil winding 1 is inserted into the conductive sleeve 901, and the locking screw 902 is tightened to fix the conductive wire 8 in the conductive sleeve 901. The coil winding 1 is pushed into the inner side of the coil connecting plate 2, so that the coil winding 1 is located between the limiting component 15 and the inner wall of the coil connecting plate 2, and the sliding seat 151 is driven to move upward by lifting the handle 174, so that the sliding seat 151 drives the pressing plate 153 to move upward through the slider 152, so that the pressing plate 153 can fit closely with the inner wall of the coil winding 1, and the locking component 17 is driven to move synchronously during the upward movement of the sliding seat 151, and the card block 172 in the locking component 17 is in contact with the card slot 14. When they are at the same level, the slide plate 171 is supported by the elastic force of the spring 175, so that the slide plate 171 drives the card block 172 to be inserted into the card slot 14, thereby achieving the purpose of locking the position of the slide seat 151 and the pressure plate 153. Similarly, the position of the remaining slide seats 151 is adjusted so that multiple pressure plates 153 push the inner wall of the coil winding 1, so that the coil winding 1 is firmly locked on the inner side of the coil connecting plate 2. When wiring, operation can be performed in the through hole 904 at the end of the guide block 903.

[0042] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

Claims

1. A micro hollow cup motor winding wound by multiple strands of wire, comprising a coil winding (1), characterized in that: A coil connection plate (2) is connected to one side of the coil winding (1), a bearing seat (3) is clamped in the middle of the coil connection plate (2), a main shaft (4) is sleeved in the bearing seat (3), the main shaft (4) is arranged through the middle of the coil connection plate (2), a commutator (5) is installed between the main shaft (4) and the coil connection plate (2), the commutator (5) is located in the coil winding (1), and two sides of the inner wall of the coil winding (1) are respectively connected to conductive wires (8), the ends of the conductive wires (8) are plugged with conductive components (9), and a wiring groove (10) is provided on the outer side of the coil connection plate (2) at a position corresponding to the conductive component (9), and the end of the conductive component (9) passes through the coil connection plate (2) and is installed in the wiring groove (10); The outer wall of the coil connection plate (2) is provided with four grooves (11) at equal intervals, a limiting groove (13) is provided at the bottom of the groove (11), a plurality of clamping grooves (14) are provided on both sides of the inner wall of the groove (11), a limiting component (15) is installed in the groove (11), the limiting component (15) is slidably connected in the limiting groove (13), slideways (16) are provided on both sides of the limiting component (15), a locking component (17) is installed in the slideway (16), a sliding hole (12) is provided on the coil connection plate (2) at a position corresponding to the locking component (17), the locking component (17) penetrates and slides in the sliding hole (12), and an end of the locking component (17) is clamped in the clamping groove (14).

2. The micro hollow cup motor winding made of multiple strands of wire according to claim 1 is characterized in that: A rubber coating layer (6) is provided on one side of the coil winding (1), a plurality of branch lines (7) are provided in the rubber coating layer (6), and the ends of the plurality of branch lines (7) are connected to the coil winding (1).

3. The micro hollow cup motor winding made of multiple strands of wire according to claim 1, characterized in that: The coil winding (1) is made by winding a plurality of small-diameter enameled wires in parallel, and the coil winding (1) is of hollow design.

4. The micro hollow cup motor winding made of multiple strands of wire according to claim 1, characterized in that: The conduction component (9) comprises a conductive sleeve (901), the conductive sleeve (901) is installed on the inner side of the coil connection plate (2), the end of the conductive wire (8) is inserted into the conductive sleeve (901), a locking screw (902) is threadedly connected to the conductive sleeve (901), and the end of the locking screw (902) is connected to the conductive wire (8).

5. The micro hollow cup motor winding wound by multiple strands of wire according to claim 4, characterized in that: A guide block (903) is fixedly connected to one side of the conductive sleeve (901), and the guide block (903) is installed through the coil connection plate (2). A through hole (904) is provided at the end of the guide block (903) and is located in the wiring slot (10).

6. The micro hollow cup motor winding wound by multiple strands of wire according to claim 1, characterized in that: The limiting assembly (15) comprises a slide seat (151), the slide seat (151) is slidably connected in the limiting groove (13), a slider (152) is fixedly connected to one side of the slide seat (151), a pressure plate (153) is fixedly connected to the slider (152), the pressure plate (153) is arc-shaped and its outer wall overlaps the inner wall of the coil winding (1), and a handle (154) is fixedly connected to the slide seat (151).

7. The micro hollow cup motor winding made of multiple strands of wire according to claim 1, characterized in that: The locking assembly (17) comprises a slide plate (171), the slide plate (171) is slidably connected in the slideway (16), a clamping block (172) is fixed on one side of the slide plate (171), the clamping block (172) is clamped in the clamping groove (14), and a spring (175) is fixedly connected on the side of the slide plate (171) away from the slider (152), and the end of the spring (175) is fixed on the inner wall of the slideway (16).

8. The micro hollow cup motor winding made of multiple strands of wire according to claim 7, characterized in that: An L-shaped block (173) is fixedly connected to the slide plate (171); the L-shaped block (173) passes through the slideway (16) and is arranged on the limit assembly (15); a handle (174) is fixedly connected to one side of the L-shaped block (173); and one side of the clamping block (172) is designed to be inclined.

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