Improved busbar structure

Abstract

The utility model provides an improved busbar structure, which comprises a shell, at least one wiring chamber is arranged in the shell along the length direction of the shell, any wiring chamber comprises a partition plate, and the partition plate comprises at least one n-shaped bending part. The partition plates sequentially divide the wiring chamber into at least two confluence channels and at least one gap, a conductor is arranged in any confluence channel, and at least two confluence holes are formed in the outer side wall of the shell. The other ends of the conductors in the confluence channels at the same height in all the wiring chambers penetrate out of the confluence holes respectively and are connected to the wiring terminals, and any wiring chamber further comprises two parallel clamping planes. The busbar clamping and assembling device has the advantages that the positioning accuracy of a busbar in the clamping and assembling process is improved, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to an electrical connector for motor windings, in particular to an improved busbar structure. Background Art

[0002] Motors are widely used in all walks of life, and the bus is an important electrical component in the motor that connects the stator winding and the motor terminal. The conductor lead wires of the bus are connected to the stator winding lead wires by welding, so there are high requirements on the position accuracy and positioning structure of the three-phase terminals of the bus in terms of technology. In the prior art, the conductor sheet or strip is first stamped and bent through a mold, and then the formed conductor is used as an insert for integral injection molding. When the conductors are arranged in multiple layers and the arc span is large, the bus is difficult to form and subsequently assemble and position. Specifically, the above-mentioned bus is prone to positional displacement during clamping or assembly due to the arc-shaped edges, which leads to misalignment during assembly and affects installation efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an improved busbar structure, which is to solve the technical problem of displacement and misalignment in the busbar assembly process in the prior art. In order to achieve the above purpose, the utility model provides the following technical solutions:

[0004] An improved busbar structure comprises a shell, wherein the length direction of the shell is arc-shaped or annular, and at least one wiring chamber is arranged in the shell along its length direction, and any of the wiring chambers each comprises a partition, wherein the partition comprises at least one "X"-shaped curved portion, and when the number of the "X"-shaped curved portions is more than two, the "X"-shaped curved portions are continuously connected, and the partition divides the wiring chamber into at least two busbar channels and at least one gap in sequence, wherein the busbar channels and the gaps are arranged at intervals, and the arrangement direction of the busbar channels and the gaps is perpendicular to the length direction of the shell, and one end of each of the gaps is open to the In the outer side surface of the shell, a conductor is arranged in any of the bus channels, one end of the conductor is bent and extends along the axial direction of the shell to the upper side of the upper end surface of the shell, at least two bus holes are arranged in the outer side wall of the shell, and the other ends of the conductors in the bus channels at the same height in all the wiring chambers pass through one of the bus holes and are connected to a wiring terminal, and any of the wiring chambers also includes two clamping planes parallel to each other, the two clamping planes are respectively arranged on the outer side surface and the inner side surface of the shell, and one of the clamping planes is located at the position where the opening of the gap is located.

[0005] Furthermore, the number of the "X"-shaped bends is two, and the two "X"-shaped bends are continuously connected. The number of the bus channels is three, and the bus channels include the first bus channel, the second bus channel, and the third bus channel. The number of the gaps is two, and the gaps include the first gap and the second gap. The arrangement direction of the first bus channel, the first gap, the second bus channel, the second gap, and the third bus channel is perpendicular to the length direction of the shell. One end of the first gap and the second gap are both open in the outer side surface of the shell. The first bus channel is provided with an A-phase conductor. The second bus channel is provided with a B-phase conductor, and the third bus channel is provided with a C-phase conductor. One ends of the A-phase conductor, the B-phase conductor and the C-phase conductor are each bent and extended along the axial direction of the shell to the upper side of the upper end surface of the shell. An A-phase bus hole, a B-phase bus hole and a C-phase bus hole are provided in the outer wall of the shell. The other ends of the A-phase conductors pass through the A-phase bus hole and are connected to the same A-phase terminal, the other ends of the B-phase conductors pass through the B-phase bus hole and are connected to the same B-phase terminal, and the other ends of the C-phase conductors pass through the C-phase bus hole and are connected to the same C-phase terminal.

[0006] Furthermore, any one of the conductors is integrally formed with the housing through an injection molding process.

[0007] Furthermore, the cross section of the shell perpendicular to the length direction is rectangular.

[0008] Furthermore, the conductor is a round copper wire or a flat copper wire.

[0009] Furthermore, the partition and the shell are integrally formed through an injection molding process.

[0010] Furthermore, the height of the bus channel and the height of the corresponding conductor satisfy the formula: D+1≤h3≤h1≤D+3, D<h2≤D+1; wherein D is the thickness or diameter of the conductor, h1 is the height of the first bus channel, h2 is the height of the second bus channel, and h3 is the height of the third bus channel.

[0011] Working principle:

[0012] In the production process of the busbar, the conductor is generally bent into the required shape first, and then one end of the conductor is connected to the three-phase terminal by riveting or welding according to the design plan, and finally the conductor is used as an embedded part and a shell is injection molded around the conductor. The inventive point of the utility model is that during the injection molding process, the multi-layer conductor is layered through the workpiece, and the busbar channel is formed by auxiliary injection molding. At the same time, two flat clamping planes are formed on the left and right sides of the shell. The clamping planes are convenient for the clamping claws to clamp the busbar during assembly, and the busbar has a positioning surface during assembly, which can be installed and positioned with other components.

[0013] Compared with the prior art, the utility model has the beneficial effects of improving the positioning accuracy of the busbar during the clamping and assembly process, and improving the production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the improved busbar structure of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the improved busbar structure of the utility model.

[0016] Figure 3 It is a schematic diagram of the conductor arrangement of the improved busbar structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the height of the bus channel of the improved bus structure of the utility model.

[0018] Figure 5 The diagram is a schematic diagram of the three-phase terminal structure of the improved busbar structure of the utility model.

[0019] Figure 6 It is a schematic diagram of the gap structure of the improved busbar structure of the utility model.

[0020] Figure 7 for Figure 2 Schematic diagram of the radial cross-section of the shell at point A. DETAILED DESCRIPTION

[0021] Example 1

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , the utility model provides a technical solution:

[0023] An improved busbar structure includes a shell 1, the length direction of the shell 1 is arc-shaped or annular, at least one wiring chamber is arranged in the shell 1 along its length direction, any wiring chamber each includes a partition, the partition includes at least one "X"-shaped curved portion, when the number of "X"-shaped curved portions is more than two, the "X"-shaped curved portions are continuously connected, the partition divides the wiring chamber into at least two busbar channels and at least one gap 2 in sequence, the busbar channels and the gap 2 are arranged at intervals, the arrangement direction of the busbar channels and the gap 2 is perpendicular to the length direction of the shell 1, and one end of the gap 2 is open to the shell 1, any one of the bus channels is provided with a conductor 3, one end of the conductor 3 is respectively bent and extended to the upper side of the upper end surface of the shell 1 along the axial direction of the shell 1, at least two bus holes are provided in the outer wall of the shell 1, the other ends of the conductors 3 in the bus channels at the same height in all the wiring chambers respectively pass through a bus hole and are connected to a wiring terminal 5, any one of the wiring chambers further includes two mutually parallel clamping planes 4, the two clamping planes 4 are respectively provided on the outer side and the inner side of the shell 1, and one of the clamping planes 4 is located at the position where the opening of the gap 2 is located.

[0024] Example 2

[0025] This embodiment divides the wiring chamber into three converging channels, which is more suitable for three-phase circuits.

[0026] The present embodiment is different from the embodiment 1 in that the number of the "X"-shaped bends is two, the two "X"-shaped bends are continuously connected, the number of the bus channels is three, the bus channels include a first bus channel, a second bus channel, and a third bus channel, the number of the gaps 2 is two, the gaps 2 include a first gap and a second gap, the arrangement direction of the first bus channel, the first gap, the second bus channel, the second gap and the third bus channel is perpendicular to the length direction of the shell 1, one end of the first gap and the second gap are both opened in the outer side surface of the shell 1, the first bus channel is provided with an A-phase conductor, and the second bus channel is provided with an A-phase conductor. A B-phase conductor is arranged in the first bus channel, a C-phase conductor is arranged in the third bus channel, one end of the A-phase conductor, the B-phase conductor and the C-phase conductor are respectively bent and extended to the upper side of the upper end surface of the shell 1 along the axial direction of the shell 1, an A-phase bus hole, a B-phase bus hole and a C-phase bus hole are arranged in the outer side wall of the shell 1, the other end of the A-phase conductor passes through the A-phase bus hole and is connected to the same A-phase terminal, the other end of the B-phase conductor passes through the B-phase bus hole and is connected to the same B-phase terminal, and the other end of the C-phase conductor passes through the C-phase bus hole and is connected to the same C-phase terminal.

[0027] Furthermore, any one of the conductors 3 and the housing 1 is integrally formed through an injection molding process.

[0028] Furthermore, the cross section of the housing 1 perpendicular to the length direction is rectangular.

[0029] Furthermore, the conductor 3 is a round copper wire or a flat copper wire.

[0030] Furthermore, the partition plate and the shell 1 are integrally formed by an injection molding process.

[0031] Furthermore, the height of the bus channel and the height of the corresponding conductor 3 satisfy the formula: D+1≤h3≤h1≤D+3, D<h2≤D+1; where D is the thickness or diameter of the conductor 3, h1 is the height of the first bus channel, h2 is the height of the second bus channel, and h3 is the height of the third bus channel.

[0032] Specifically, the spacing in the above formula satisfies the electrical requirements between the conductors of the multiple layers.

[0033] The working process of this embodiment:

[0034] The arrangement of the conductors in the busbar is conventional and will not be described in detail here.

[0035] A general motor busbar has three bus holes for forming three wire bundles. The three wire bundles are connected to the three-phase terminals 5 and then to the corresponding terminals respectively.

[0036] The conductor 3 can be a flat copper wire or a round copper wire. When a flat copper wire is used, D is the thickness, and when a round copper wire is used, D is the diameter. After the conductor 3 extends out of the wire hole and is bent upward, the distance between the end of the conductor 3 and the upper surface of the shell 1 is at least H, and H is the height of the welding joint, which provides sufficient clamping space for the welding chuck during processing and welding.

[0037] The inner and outer sides of the shell 1 are provided with mutually parallel clamping planes 4, which provide a stable support surface for the clamping claws to clamp the shell 1, thereby improving the stability of the clamping process and preventing the shell 1 from being displaced during clamping, thereby affecting the subsequent installation and positioning; for the installation between multiple components, the clamping plane 4 can be used as an assembly positioning surface, which has higher dimensional positioning accuracy than the arc-shaped bus surface.

[0038] The structure is simple to form. In the injection molding step, a thin sheet workpiece is inserted between the conductors of adjacent layers. After the injection molding is completed, the thin sheet workpiece is taken out to form a gap for separating the bus channel and a clamping plane on one side. During the injection molding process, the thin sheet workpiece can also support the conductors located on the upper layer to prevent the upper conductors from falling and mixing with the lower conductors during the injection molding process. The clamping plane can be formed by a planar workpiece during the injection molding.

[0039] In the injection-molded housing, the injection-molded material in any one of the converging channels supports the conductor.

Claims

1. An improved busbar structure, comprising a housing (1), wherein the housing (1) is arc-shaped or ring-shaped in the length direction, and characterized in that: At least one wiring chamber is arranged in the shell (1) along its length direction, and any one of the wiring chambers includes a partition, and the partition includes at least one "X"-shaped bend. When the number of the "X"-shaped bends is two or more, the "X"-shaped bends are continuously connected. The partition divides the wiring chamber into at least two confluence channels and at least one gap (2) in sequence, and the confluence channels and the gaps (2) are arranged at intervals, and the arrangement direction of the confluence channels and the gaps (2) is perpendicular to the length direction of the shell (1), and one end of the gaps (2) is opened in the outer side surface of the shell (1), and any one of the confluence channels is arranged There is a conductor (3), one end of the conductor (3) is bent and extends along the axial direction of the shell (1) to the upper side of the upper end surface of the shell (1), at least two collector holes are arranged in the outer wall of the shell (1), and the other end of the conductor (3) in the collector channels at the same height in all the wiring chambers passes through one of the collector holes and is connected to a wiring terminal (5), and any one of the wiring chambers further includes two mutually parallel clamping planes (4), the two clamping planes (4) are respectively arranged on the outer side and the inner side of the shell (1), and one of the clamping planes (4) is located at the position where the opening of the gap (2) is located.

2. An improved busbar structure according to claim 1, characterized in that: The number of the "X"-shaped curved portions is two, and the two "X"-shaped curved portions are continuously connected. The number of the confluence channels is three, and the confluence channels include the first confluence channel, the second confluence channel, and the third confluence channel. The number of the gaps (2) is two, and the gaps (2) include the first gap and the second gap. The arrangement direction of the first confluence channel, the first gap, the second confluence channel, the second gap, and the third confluence channel is perpendicular to the length direction of the shell (1). One end of the first gap and the second gap are both opened in the outer side surface of the shell (1); an A-phase conductor is arranged in the first bus channel, a B-phase conductor is arranged in the second bus channel, and a C-phase conductor is arranged in the third bus channel; one end of each of the A-phase conductor, the B-phase conductor, and the C-phase conductor is bent and extends along the axial direction of the shell (1) to the upper side of the upper end surface of the shell (1); an A-phase bus hole, a B-phase bus hole, and a C-phase bus hole are arranged in the outer side wall of the shell (1); the other end of each of the A-phase conductors passes through the A-phase bus hole and is connected to the same A-phase terminal; the other end of each of the B-phase conductors passes through the B-phase bus hole and is connected to the same B-phase terminal; the other end of each of the C-phase conductors passes through the C-phase bus hole and is connected to the same C-phase terminal.

3. An improved busbar structure according to claim 1, characterized in that: Any one of the conductors (3) is integrally formed with the housing (1) through an injection molding process.

4. The improved busbar structure according to claim 1, characterized in that: The cross section of the shell (1) perpendicular to the length direction is rectangular.

5. The improved busbar structure according to claim 1, characterized in that: The conductor (3) is a round copper wire or a flat copper wire.

6. An improved busbar structure according to claim 1, characterized in that: The partition plate and the shell (1) are integrally formed by an injection molding process.

7. An improved busbar structure according to claim 2, characterized in that: The height of the bus channel and the height of the corresponding conductor (3) satisfy the formula: D+1≤h3≤h1≤D+3, D<h2≤D+1; wherein D is the thickness or diameter of the conductor (3), h1 is the height of the first bus channel, h2 is the height of the second bus channel, and h3 is the height of the third bus channel.

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