Welding tool for electric control busbar

Abstract

The utility model relates to a welding tool of an electric control busbar, which is used for realizing welding positioning of a wiring terminal on a busbar body, the busbar body is of an L-shaped bending structure and comprises a transverse extension part and a vertical extension part, the wiring terminal is of a planar sheet structure, the welding tool of the electric control busbar comprises a supporting table and a vertical positioning seat, the supporting table is used for supporting the transverse extending part, a bracket is further fixedly arranged on the supporting table, the bracket is correspondingly arranged at the position, extending out of the transverse extending part in a suspended mode, of the wiring terminal, and the elastic pressing buckle comprises a pressing buckle part which can be movably arranged and an elastic piece acting on the pressing buckle part; and the elastic piece is configured to apply elastic force to the pressing and buckling part and enable the pressing and buckling part to press the wiring terminal to the transverse extension part. According to the utility model, the wiring terminal can be stably positioned on the busbar body so as to ensure that the position of the wiring terminal does not deviate during laser welding, and the welding quality and the welding efficiency are improved.

Description

Technical Field

[0001] The utility model relates to a fixing device for clamping and positioning, in particular to a welding tool for an electric control busbar. Background Art

[0002] An existing electric control busbar used on the positive and negative poles of capacitors in new energy vehicles includes a busbar body and wiring terminals welded to the busbar body, wherein the wiring terminals are thin-sheet structures, and the wiring terminals are partially suspended outside the busbar body. During the production of this type of electric control busbar, laser welding is often used to achieve a fixed connection between the busbar body and the wiring terminals. One common method is for workers to place the wiring terminals on the busbar body and then automatically weld them using a welding machine. In order to avoid hindering the movement of the welding gun, a large number of positioning structures are not set around the wiring terminals (for example, the prior art is to only set a positioning platform or positioning groove on one side of the wiring terminal 2), which leads to unstable positioning of the wiring terminals. In particular, since the wiring terminals are small in size and light in weight, and are partially suspended outside the busbar body, under the action of the protective gas blown out during laser welding, the wiring terminals often deviate from the predetermined position or even fall off the busbar body, ultimately leading to the problem of low welding yield. Utility Model Content

[0003] In view of the above problems, the present invention proposes a welding tool for an electric control busbar with an optimized structure.

[0004] The utility model is implemented by the following technical solutions:

[0005] The utility model proposes a welding tool for an electric control busbar, which is used to realize the welding positioning of the terminal on the busbar body, wherein the busbar body is an L-shaped bending structure, including a horizontal extension part and a vertical extension part, the horizontal extension part and the vertical extension part are respectively provided with a connection hole, the terminal is a flat sheet structure, the terminal is arranged at the edge of the horizontal extension part and part of the terminal is suspended and extends out of the horizontal extension part, the welding tool for the electric control busbar includes a support platform and a vertical positioning seat, the support platform is used to support the horizontal extension part, the vertical positioning seat is fixedly connected to the support platform, and the support platform and the vertical positioning seat are respectively provided with a plurality of holes. A first positioning portion and a second positioning portion are provided, and the first positioning portion and the second positioning portion are respectively used to position and cooperate with the connecting hole on the horizontal extension portion and the connecting hole on the vertical extension portion. A bracket is also fixed on the support platform, and the bracket is correspondingly arranged at a position where the terminal is suspended and extends outside the horizontal extension portion, and is used to support the part of the terminal that is suspended and extends outside the horizontal extension portion. It also includes an elastic buckle, and the elastic buckle includes a movably arranged buckle portion and an elastic member acting on the buckle portion. The elastic member is configured to apply an elastic force to the buckle portion and enable the buckle portion to press the terminal toward the horizontal extension portion.

[0006] Among them, preferably, the buckle part is a seesaw structure, one end of the buckle part is used to press against the terminal, and the other end acts on the elastic member, and the elastic member also acts on the support platform.

[0007] Preferably, the elastic member is a compression spring, and a vertically extending spring groove is provided on the support platform, and the elastic member is placed in the spring groove.

[0008] Preferably, the elastic buckle and the bracket are integrally connected and fixedly mounted on the support platform.

[0009] Preferably, the first positioning portion and the second positioning portion are movably pluggable pins.

[0010] Among them, preferably, a guide hole is provided on the vertical positioning seat, and the guide hole corresponds to the position of the connecting hole on the vertical extension part. The second positioning part includes a pin, a rocker arm, a stopper and an elastic reset part. The pin can be slidably connected in the guide hole, and the rocker arm is rotatably set on one side of the pin sliding stroke. One end of the rocker arm abuts against the pin, and the pin is pushed out of the guide hole and plugged into the connecting hole on the vertical extension part by toggling the rocker arm. The stopper is fixedly set on the rotation path of the rocker arm, and the elastic reset part acts on the pin to make the pin have a tendency to retract into the guide hole. The pin, rocker arm and stopper are arranged: when the stopper blocks the rocker arm, the force of the elastic reset part acting on the rocker arm through the pin passes through the rotation center of the rocker arm.

[0011] The utility model has the following beneficial effects: by providing a bracket and an elastic buckle, the utility model can stably position the terminal on the busbar body to ensure that the position of the terminal will not shift during laser welding, thereby improving welding quality and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the electric control busbar in the embodiment;

[0013] Figure 2 Schematic diagram of welding fixture for electric control busbar in the embodiment;

[0014] Figure 3 1 is a cross-sectional view of the welding fixture of the electric control busbar in the embodiment (one, the pin is in the retracted state);

[0015] Figure 4 2 is a cross-sectional view of the welding fixture of the electric control busbar in the embodiment (second, the pin is in the extended state). DETAILED DESCRIPTION

[0016] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0017] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0018] As a preferred embodiment of the present invention, a welding tool for an electric control busbar is provided. The structure of the electric control busbar is as follows: Figure 1 As shown, this is an existing electronic control busbar used on the positive and negative poles of capacitors in new energy vehicles. It includes a busbar body 1 and terminal blocks 2. The busbar body 1 is an L-shaped bent structure, including a transverse extension 12 and a vertical extension 11. The transverse extension 12 and the vertical extension 11 are respectively provided with a first connection hole 120 and a second connection hole 110. The first connection hole 120 and the second connection hole 110 are used for connecting and fixing the busbar body 1, for example, when the busbar body 1 is installed on a capacitor. The terminal blocks 2 are flat sheet structures, arranged at the edge of the transverse extension 12 and partially extending outside the transverse extension 12.

[0019] For the electric control busbar, the welding tool provided in this embodiment is used to realize the welding positioning of the terminal block 2 on the busbar body 1, see Figure 2 As shown, the welding fixture for the electric control busbar includes a support platform 3 and a vertical positioning seat 4. The support platform 3 is used to support the transverse extension 12. The vertical positioning seat 4 is fixedly connected to the support platform 3. The support platform 3 and the vertical positioning seat 4 are respectively provided with a first positioning portion 5 and a second positioning portion 6. The first positioning portion 5 and the second positioning portion 6 are respectively used to position and cooperate with the first connection hole 120 and the second connection hole 110, so that the busbar body 1 can be stably positioned. A bracket 7 is also fixed to the support platform 3. The bracket 7 is arranged at the position where the terminal block 2 protrudes from the transverse extension 12 in the air, and is used to support the portion of the terminal block 2 that protrudes from the transverse extension 12 in the air. An elastic buckle is also provided on the support platform 3, and the elastic buckle includes a movably arranged buckle portion 8 and an elastic member 9 acting on the buckle portion 8. In this embodiment, the buckle portion 8 is a seesaw structure, one end of the buckle portion 8 is used to press against the terminal 2, and the other end acts on the elastic member 9. The elastic member 9 is a compression spring in this embodiment, and the two ends of the elastic member 9 act on the support platform 3 and the buckle portion 8 respectively, so that the elastic member 9 applies elastic force to the buckle portion 8 and enables the buckle portion 8 to press the terminal 2 toward the lateral extension portion 12.

[0020] The welding fixture of the electric control busbar of this embodiment can stably position the terminal 2 on the busbar body 1 by providing a bracket 7 and an elastic buckle, so as to ensure that the position of the terminal 2 will not shift during laser welding, thereby improving the welding quality and welding efficiency. It is worth mentioning that due to the provision of the bracket 7, the elastic buckle can act on the portion of the terminal 2 that extends out of the transverse extension portion 12 in the air, that is, the elastic buckle does not need to extend to the position of the busbar body 1, which reduces the length of the buckle end of the elastic buckle. The entire elastic buckle is located outside the busbar body 1. The elastic buckle will not block the movement of the welding gun, and it is less likely to be obstructed by the elastic buckle when placing the terminal 2.

[0021] This embodiment utilizes a swinging seesaw-like snap-on portion 8, but in other embodiments, a sliding snap-on portion can be substituted. The elastic member 9 utilizes a compression spring in this embodiment, but in other embodiments, other spring types, such as tension springs, can also be employed, requiring only modifications to the mounting location. In this embodiment, a vertically extending spring slot 31 is provided on the support platform 3, into which the elastic member 9 is positioned for easy installation.

[0022] In this embodiment, the elastic buckle and the bracket 7 are integrally connected and fixedly mounted on the support platform 3. This arrangement can simplify the production and installation process of the welding tooling for the electric control busbar.

[0023] The first positioning portion 5 and the second positioning portion 6 can adopt any positioning structure that can cooperate with the connection hole, such as the first positioning portion 5 and the second positioning portion 6 can both be pluggable pins. However, the solution using the pins has many steps in actual operation and is relatively cumbersome. This embodiment adopts another better solution to achieve this. Figure 3 、 4The vertical positioning seat 4 is provided with a guide hole 41, which corresponds to the position of the second connecting hole 110 on the vertical extension portion 11. The second positioning portion 6 includes a pin 61, a rocker 62, a stopper 63 and an elastic reset member 64. The pin 61 is slidably connected to the guide hole 41. The rocker 62 is rotatably arranged on one side of the sliding stroke of the pin 61. One end of the rocker 62 abuts against the pin 61. By toggling the rocker 62, the pin 61 is pushed out of the guide hole 41 and the vertical extension The second connecting hole 110 on the extension part 11 is plug-fitted, the blocking member 63 is fixedly arranged on the rotation path of the rocker arm 62, and the elastic reset member 64 acts on the pin 61 so that the pin 61 has a tendency to retract into the guide hole 41. The pin 61, the rocker arm 62 and the blocking member 63 are arranged as follows: when the blocking member 63 blocks the rocker arm 62, the force of the elastic reset member 64 acting on the rocker arm 62 through the pin 61 passes through the rotation center of the rocker arm 62, that is, at this time the rocker arm 62 is in the dead point position. When the second positioning portion 6 needs to be engaged with the second connecting hole 110, the pin 61 can be extended by manually pulling the rocker arm 62 in the forward direction. When the second positioning portion 6 needs to be released from the engagement with the second connecting hole 110, the rocker arm 62 can be manually pulled in the reverse direction, and the pin 61 can be retracted under the action of the elastic reset member 64. Moreover, when the pin 61 is extended, the rocker arm 62 is at the dead point position. Even if no manual force is applied to the rocker arm 62, the rocker arm 62 will not move, so that the pin 61 can remain in the extended state. For the first positioning portion 5, this embodiment adopts a convex column structure to implement it. In other embodiments, the first positioning portion 5 and the second positioning portion 6 can also be replaced with each other. With the structure of this embodiment, the operations required for the first positioning portion 5 and the second positioning portion 6 to position the busbar body 1 are simpler.

[0024] The welding tool of this embodiment is a four-station tool, which can simultaneously realize the welding positioning of the connection terminals on four electric control busbars to improve production efficiency. In other embodiments, it can also be set as a tool with two stations, three stations, five stations or other numbers of stations.

[0025] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. A welding fixture for an electric control busbar, used to achieve welding and positioning of terminal blocks on a busbar body, wherein the busbar body is an L-shaped bent structure, including a transverse extension portion and a vertical extension portion, each of which is provided with a connection hole, and the terminal blocks are planar sheet-like structures, disposed at the edge of the transverse extension portion and partially extending out of the transverse extension portion in a suspended manner. The device is characterized by: The welding tooling of the electric control busbar includes a support platform and a vertical positioning seat. The support platform is used to support the horizontal extension part. The vertical positioning seat is fixedly connected to the support platform. The support platform and the vertical positioning seat are respectively provided with a first positioning part and a second positioning part. The first positioning part and the second positioning part are respectively used to position and cooperate with the connection hole on the horizontal extension part and the connection hole on the vertical extension part. A bracket is also fixed on the support platform. The bracket is correspondingly arranged at a position where the terminal is suspended and extends beyond the horizontal extension part. The bracket is used to support the part of the terminal that is suspended and extends beyond the horizontal extension part. It also includes an elastic buckle. The elastic buckle includes a movably arranged buckle part and an elastic member acting on the buckle part. The elastic member is configured to apply an elastic force to the buckle part and enable the buckle part to press the terminal toward the horizontal extension part.

2. The welding tool for the electric control busbar according to claim 1, characterized in that: The buckle portion is a seesaw structure, one end of the buckle portion is used to press against the wiring terminal, and the other end acts on the elastic member, and the elastic member also acts on the support platform.

3. The welding tool for the electric control busbar according to claim 2, characterized in that: The elastic member is a compression spring. A vertically extending spring groove is provided on the support platform, and the elastic member is placed in the spring groove.

4. The welding tool for the electric control busbar according to claim 1, characterized in that: The elastic buckle and the bracket are integrally connected and fixedly mounted on the support platform.

5. The welding tool for the electric control busbar according to claim 1, characterized in that: The first positioning portion and the second positioning portion are movably pluggable pins.

6. The welding tool for the electric control busbar according to claim 1, characterized in that: A guide hole is provided on the vertical positioning seat, and the guide hole corresponds to the position of the connecting hole on the vertical extension part. The second positioning part includes a pin, a rocker arm, a stopper and an elastic reset part. The pin can be slidably connected in the guide hole, and the rocker arm can be rotatably set on one side of the sliding stroke of the pin. One end of the rocker arm abuts against the pin, and the pin is pushed out of the guide hole and plugged into the connecting hole on the vertical extension part by toggling the rocker arm. The stopper is fixedly set on the rotation path of the rocker arm, and the elastic reset part acts on the pin to make the pin have a tendency to retract into the guide hole. The pin, rocker arm and stopper are arranged: when the stopper blocks the rocker arm, the force exerted by the elastic reset part on the rocker arm through the pin passes through the rotation center of the rocker arm.

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