bus bar

Abstract

The utility model discloses a busbar, apply to motor, for connecting coil, including annular setting's insulating body and setting on the insulating body a plurality of conductors, the body part of a plurality of conductors is along the circumferential extension setting on the insulating body and the body part of a plurality of conductors is along the radial interval setting, and each conductor has at least two connecting ends, and the insulating body is set up with one jack hole to each connecting end of each conductor, and the tail end of coil passes through the jack hole and is electrically connected with the connecting end of conductor.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a busbar. Background Technology

[0002] In existing servo motor structures, several coils are circumferentially spaced within the casing, and the coils are connected to the power input terminal via a circuit adapter board. Furthermore, during the series and parallel connection of the coils, numerous wire bundles are manually numbered, grouped, twisted together, and then soldered onto the circuit board. This process is not only complex but also prone to errors, ultimately leading to servo motor assembly failure. Moreover, high-power servo motors require large currents for both the coils and the power input terminal, placing extremely high demands on the design and material of the circuit board. This results in expensive circuit boards for servo motors, low efficiency due to manual wire numbering and grouping, and a high risk of incorrect wire sequence. The soldering speed is slow, and there is a high risk of false soldering. For companies currently focused on cost reduction and efficiency improvement, this poses a significant challenge. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a bus that is simple in structure, low in manufacturing cost, fast and accurate in client wiring, fast in welding speed, and strong and reliable in welding.

[0004] This utility model discloses a busbar applied to a motor for connecting coils. It includes an annular insulating body and a plurality of conductors disposed on the insulating body. The body portions of the plurality of conductors extend circumferentially on the insulating body and are radially spaced apart. Each conductor has at least two connection ends. The insulating body has a socket corresponding to each connection end of each conductor. The tail end of the coil passes through the socket and is electrically connected to the connection end of the conductor.

[0005] Furthermore, the connection end of each conductor has a height difference with the connection ends of other conductors or is spaced apart by the insulating body.

[0006] Furthermore, the insulating body is arranged in a stepped manner, and at least a portion of the conductors are distributed on the insulating body with a height difference.

[0007] Furthermore, at least one of the outer circumference, inner circumference, and upper surface of the insulating body is provided with a clearance groove for avoiding the connection end of the conductor.

[0008] Furthermore, the insulating body is recessed with a mounting groove, the main body portion of the conductor is installed in the mounting groove, and the connecting end of the conductor extends out of the mounting groove.

[0009] Furthermore, the connecting end of the conductor is a U-shaped terminal with a U-shaped groove, the U-shaped terminal being used to clamp the tail end of the coil within the U-shaped groove.

[0010] Furthermore, the welding method for the connection end of the coil to the conductor is at least one of laser welding, ultrasonic welding, non-contact induction welding, resistance welding, or tin bath immersion soldering.

[0011] Furthermore, the side of the socket near the coil has an inwardly inclined guide surface.

[0012] Furthermore, the bus also includes a power terminal module, which includes a mounting base and a plurality of power terminals disposed on the mounting base. The mounting base is mounted on the insulating body, and the plurality of power terminals are electrically connected to the conductor.

[0013] Furthermore, the upper surface of the insulating body is recessed with a positioning hole, and the lower surface of the fixing base is protruded with a positioning post. The positioning post is installed in the positioning hole to fix the power terminal module on the insulating body.

[0014] The bus provided by this utility model is not only simple in structure and low in manufacturing cost, but also allows for quick and accurate wiring to the client, fast welding speed, and strong and reliable welding. It not only saves costs but also improves production efficiency, and is highly favored by practitioners in the motor industry. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the busbar according to the first embodiment of the present invention.

[0017] Figure 2 for Figure 1 The diagram shown is a three-dimensional exploded view of the busbar.

[0018] Figure 3 for Figure 1 A magnified view of part A of the manifold shown.

[0019] Figure 4 This is a schematic diagram of the busbar according to the second embodiment of the present invention.

[0020] Figure 5 for Figure 4The diagram shown is a three-dimensional exploded view of the busbar.

[0021] Figure 6 for Figure 4 The diagram shows the assembly of the busbar and the coil tail end.

[0022] Figure 7 for Figure 4 The diagram shown shows a bus without power terminals installed.

[0023] Figure 8 This is a top view of the insulating body according to the second embodiment of the present invention.

[0024] Figure 9 for Figure 8 A schematic diagram of the insulating body from another angle.

[0025] Figure 10 This is a schematic diagram of the conductor of this utility model. Detailed Implementation

[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0027] The terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in when in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0029] Please see Figures 1-10 This utility model discloses a busbar applied to a motor for connecting coils.

[0030] Please see Figures 1-3 The busbar includes an annularly arranged insulating body 10 and a plurality of conductors 20 disposed on the insulating body 10. The body portions 21 of the plurality of conductors 20 extend circumferentially on the insulating body 10 and the body portions 21 of the plurality of conductors 20 are arranged radially spaced.

[0031] Please see Figure 10 Each conductor 20 has at least two connection ends 22, and the insulating body 10 has a socket 12 corresponding to each connection end 22 of each conductor 20. The tail end 100 of the coil passes through the socket 12 and is electrically connected to the connection end 22 of the conductor 20.

[0032] Please see Figure 3 Each of the conductors 20 has a height difference with the connection ends 22 of other conductors 20 or is spaced apart by the insulating body 10.

[0033] Please see Figures 4-5 The insulating body 10 may be arranged in a stepped manner, and at least a portion of the body portions 21 of the conductors 20 are distributed on the insulating body 10 with a height difference. In this embodiment, the insulating body 10 has two stepped layers, and the conductors 20 located in the inner and outer rings of the insulating body 10 are located in the lower stepped layer, while the conductors 20 located in the middle ring are located in the higher stepped layer. In other embodiments, the insulating body 10 may also have three or more stepped layers, depending on the problem to be solved by this technical solution, and no particular limitation is made here.

[0034] Please see Figure 6 In this embodiment, the insertion holes 12 of the insulating body 10 are all located at the lower step of the insulating body 10, and the insertion holes 12 of the insulating body 10 are arranged in a ring on the inner and outer circumferences and are equidistantly spaced along the circumference.

[0035] Please see Figure 5 and Figure 7 At least one of the outer circumference, inner circumference, and upper surface of the insulating body 10 is provided with a clearance groove 131 for avoiding the connection end 22 of the conductor 20. In this embodiment, the outer circumference, inner circumference, and upper surface of the insulating body 10 are all provided with the clearance groove 131 to avoid the connection end 22.

[0036] Please see Figures 1-2 and Figures 4-8 Furthermore, the insulating body 10 is recessed with a mounting groove 11, and the body portion 21 of the conductor 20 is installed in the mounting groove 11, while the connecting end 22 of the conductor 20 extends out of the mounting groove 11. In this embodiment, the body portion 21 of the conductor 20 is recessed into the mounting groove 11. In other embodiments, the body portion 21 of the conductor 20 may also extend out of the mounting groove 11, provided that the body portion 21 is fixed in the mounting groove 11 and that adjacent or spaced conductors 20 do not interfere with each other and do not conduct electricity. No particular limitation is made here.

[0037] Please see Figure 2 , Figure 5 , Figure 6 and Figure 10 The connecting end 22 of the conductor 20 is a U-shaped terminal with a U-shaped groove 221, which is used to clamp the tail end 100 of the coil within the U-shaped groove 221. When the tail end 100 of the coil is clamped within the U-shaped groove 221, the welding method between the tail end 100 of the coil and the connecting end 22 of the conductor 20 is at least one of laser welding, ultrasonic welding, non-contact induction welding, resistance welding, or pot immersion soldering.

[0038] More specifically, the connecting end 22 is a U-shaped terminal formed by extending upward from the body portion 21 and then bending inward or outward along one side of it, and extending in an arc shape at its end.

[0039] In this embodiment, when the connecting end 22 of one conductor 20 is located above the body portion 21 of another conductor 20, the connecting end 22 of the conductor 20 is spaced apart from the body portion 21 of the other conductor 20, and in the subsequent assembly process, insulating glue is poured into the gap to maintain the insulating gap.

[0040] Please see Figure 9 The insertion hole 12 has an inwardly inclined guide surface 121 on the side near the coil. When the busbar is assembled to mate with the tail end 100 of the motor and the coil, the tail end 100 of the coil enters the insertion hole 12 of the insulating body 10 from bottom to top. The guide surface 121 makes it easier for the tail end 100 of the coil to be smoothly inserted into the insertion hole 12, which greatly improves the assembly efficiency.

[0041] Please see Figures 4-7 The bus also includes a power terminal module 30, which is used to provide power to the coil through the bus to power the motor.

[0042] The power terminal module 30 includes a mounting base 31 and a plurality of power terminals 32 disposed on the mounting base 31. The mounting base 31 is mounted on the insulating body 10, and the plurality of power terminals 32 are electrically connected to the conductor 20. The welding method between the power terminals 32 and the conductor 20 is at least one of laser welding, ultrasonic welding, non-contact induction welding, resistance welding, or pot soldering.

[0043] The power terminal 32 includes at least a U-terminal terminal, a V-terminal terminal, and a W-terminal terminal, and the U-terminal terminal, the V-terminal terminal, and the W-terminal terminal are electrically connected to different conductors 20.

[0044] More specifically, in this embodiment, the upper surface of the insulating body 10 is recessed with a positioning hole 14, and the lower surface of the fixing base 31 is protruded with a positioning post 33. The positioning post 33 is installed in the positioning hole 14 to fix the power terminal module 30 on the insulating body.

[0045] In other embodiments, the fixing base 31 can also be integrally formed on the insulating body 10, and the power terminal 32 can be installed on the fixing base 31 by plugging in.

[0046] Please see Figure 5 ,by Figure 5 Taking an example, the assembly process of the busbar and the motor coil is illustrated: First, several coils are arranged at intervals inside the motor housing, with the tail ends 100 of the coils extending upwards. The two tail ends 100 of the several coils are respectively arranged into two circular rings with their centers overlapping, corresponding to the socket 12 of the insulating body 10. Next, the busbar is assembled into the motor housing. At the same time, each tail end 100 of several coils is inserted into a socket 12. When the busbar is installed correctly, the tail ends 100 of several coils extend upwards out of the socket 12 and are ensured to be accommodated in the U-shaped groove 221 of the connection end 22. Then, by operating the equipment, the two arms of the connecting end 22 are brought close to the tail end 100 of the coil and the tail end 100 of the coil is clamped to the connecting end 22. Then, the tail end 100 of the coil is welded to the connecting end 22 to keep the tail end 100 of the coil electrically connected to the connecting end 22. Finally, the connector at the tail end 100 above the connection end 22 is removed, and then a sealing operation is performed to ensure that the different conductors 20 are kept insulated. At this point, the bus assembly work is completed.

[0047] The bus provided by this utility model is not only simple in structure and low in manufacturing cost, but also allows for quick and accurate wiring to the client, fast welding speed, and strong and reliable welding. It not only saves costs but also improves production efficiency, and is highly favored by practitioners in the motor industry.

[0048] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A busbar, applied to a motor for connecting coils, characterized in that, The device includes an annular insulating body and a plurality of conductors disposed on the insulating body. The body portions of the plurality of conductors extend circumferentially on the insulating body and are radially spaced apart. Each conductor has at least two connection ends. The insulating body has a socket corresponding to each connection end of each conductor. The tail end of the coil passes through the socket and is electrically connected to the connection end of the conductor.

2. The busbar as described in claim 1, characterized in that, The connection end of each conductor has a height difference from the connection ends of other conductors or is spaced apart by the insulating body.

3. The busbar as described in claim 2, characterized in that, The insulating body is arranged in a stepped manner, and at least a portion of the conductors are distributed on the insulating body with a height difference.

4. The busbar as described in claim 3, characterized in that, At least one of the outer circumference, inner circumference, and upper surface of the insulating body is provided with a clearance groove for avoiding the connection end of the conductor.

5. The busbar as described in claim 1, characterized in that, The insulating body is recessed with a mounting groove, the main body portion of the conductor is installed in the mounting groove, and the connecting end of the conductor extends out of the mounting groove.

6. The busbar as described in claim 1, characterized in that, The connecting end of the conductor is a U-shaped terminal with a U-shaped groove, which is used to clamp the tail end of the coil in the U-shaped groove.

7. The busbar as described in claim 1, characterized in that, The welding method used to connect the tail end of the coil to the connection end of the conductor is at least one of laser welding, ultrasonic welding, non-contact induction welding, resistance welding, or tin bath immersion soldering.

8. The busbar as described in claim 1, characterized in that, The side of the socket closest to the coil has an inwardly inclined guide surface.

9. The busbar as described in any one of claims 1-8, characterized in that, The bus also includes a power terminal module, which includes a mounting base and a plurality of power terminals disposed on the mounting base. The mounting base is mounted on the insulating body, and the plurality of power terminals are electrically connected to the conductor.

10. The busbar as described in claim 9, characterized in that, The upper surface of the insulating body is recessed with a positioning hole, and the lower surface of the fixing base is protruded with a positioning post. The positioning post is installed in the positioning hole to fix the power terminal module on the insulating body.

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