A jig for assisting assembly of an inverter

Abstract

This utility model discloses a fixture for assisting inverter assembly. The fixture includes a base plate with several mounting posts on its top for fixing the base, several clamps on the top of the base plate and distributed around the base, a first positioning block detachably mounted on the top of the base plate and located on one side of the base for positioning 060 copper busbars, a second positioning block mounted on the top of the base plate and located on the other side of the base, opposite to the first positioning block, a third positioning block mounted on the top of the base plate and located between the base and the second positioning block, and a positioning element mounted on the top of the base plate and located adjacent to the first positioning block for fixing 040 and 050 copper busbars. The fixture achieves spatial pose coordination control of multiple components with a purely mechanical structure, ensuring assembly accuracy while significantly reducing reliance on high-energy-consuming drive units and imported precision guide rails, providing reliable assurance for efficient and safe inverter assembly, and also greatly saving costs.

Description

Technical Field

[0001] This utility model relates to the field of inverter assembly technology, and in particular to a fixture for assisting inverter assembly. Background Technology

[0002] With the diversification of electric vehicle platforms, inverter assembly faces the dual dilemma of high cost and low precision. The model-bound nature of dedicated fixtures leads to repeated equipment investment during production line switching, while manual positioning errors force rework, significantly increasing overall costs. Although traditional solutions introduce pneumatic systems and imported guide rails to try to improve precision, the high procurement costs and energy consumption further exacerbate cost pressures. At the same time, the bulky structure makes it difficult to guarantee the safety gap precision between the 060 copper busbar and the PCBA board, the consistency of terminal alignment for multiple specifications of copper busbars, and the stable fixation of the choke.

[0003] Therefore, in order to address the above pain points, there is an urgent need for a fixture to assist in the assembly of inverters. Utility Model Content

[0004] The main purpose of this utility model is to provide a fixture for assisting inverter assembly, which aims to solve the problems of high inverter assembly cost and low assembly accuracy.

[0005] To achieve the above objectives, this utility model proposes a fixture for assisting in inverter assembly. The inverter includes a base, a dual contactor, 060 copper busbars, 040 copper busbars, 050 copper busbars, 070 copper busbars, 080 copper busbars, a choke, a PCBA board, a single contactor, and a relay. The fixture includes:

[0006] The base plate has several mounting posts on its top for fixing the base.

[0007] Several clamps are disposed on the top of the base plate and distributed around the base, for fixing some components in the inverter;

[0008] The first positioning block is detachably mounted on the top of the base plate and located on one side of the base, for positioning the 060 copper busbar;

[0009] The second positioning block is disposed on the top of the base plate and on the other side of the base, and is disposed opposite to the first positioning block, for fixing the PCBA board;

[0010] The third positioning block is disposed on the top of the base plate and located between the base and the second positioning block, and is used to fix the choke ring;

[0011] A positioning element is disposed on the top of the base plate and located adjacent to the first positioning block, for fixing the 040 copper busbar and the 050 copper busbar.

[0012] The beneficial effects of this utility model are as follows: Firstly, the positioning reference constructed by the mounting columns on the base plate, combined with the circumferentially distributed clamps to synchronously constrain discrete components, significantly improves assembly coordination. Secondly, the first positioning block provides precise positioning guidance for the 060 copper busbar, preventing the 060 copper busbar from affecting assembly accuracy due to its flexibility. Simultaneously, the detachability of the first positioning block does not affect the space required for subsequent component assembly. Furthermore, the third positioning block located between the base and the PCBA board provides customized support for the choke coil, suppressing vibration displacement. The adjacent positioning components innovatively integrate the space management functions of the 040 and 050 copper busbars, achieving coordinated fixation of irregularly shaped conductive components. The aforementioned fixture uses a purely mechanical architecture to complete the coordinated spatial orientation control of multiple components, ensuring assembly accuracy while significantly reducing reliance on high-energy-consuming drive units and imported precision guide rails, providing reliable assurance for the efficient and safe assembly of the inverter, and also greatly saving costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the fixture in this utility model (including the base in the inverter);

[0015] Figure 2 This is a three-dimensional structural diagram of the fixture in this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the fixture in this utility model from another angle;

[0017] Figure 4 This is a structural schematic diagram of the positioning component (including the base plate) in this utility model;

[0018] Figure 5 This is a schematic diagram of the clamping component in this utility model.

[0019] Label Explanation:

[0020] 100. Base;

[0021] 1. Base plate; 11. Mounting columns;

[0022] 2. Clamping component; 21. First clamping component; 211. Clamping platform; 212. Clamping rod element; 2121. Positioning pin; 213. Linkage element; 214. Handheld element; 22. Second clamping component; 23. Third clamping component; 24. Fourth clamping component; 25. Fifth clamping component; 26. Sixth clamping component;

[0023] 3. First positioning block; 31. First copper busbar positioning pin;

[0024] 4. Second positioning block; 41. Locking position; 42. Locking platform;

[0025] 5. Third positioning block; 51. First positioning hole; 52. Second positioning hole;

[0026] 6. Positioning component; 61. Sliding element; 611. Slide rail; 62. Abutting element; 621. First abutting block; 622. Second abutting block; 6221. Limiting plate; 623. Third abutting block; 63. Push plate; 631. Second copper busbar positioning pin; 64. Rotary telescopic component.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This utility model provides a fixture for assisting in inverter assembly. Please refer to [reference needed]. Figures 1-5 The inverter includes a base 100, dual contactors, 060 copper busbars, 040 copper busbars, 050 copper busbars, 070 copper busbars, 080 copper busbars, chokes, PCBA boards, single contactors, and other structural components such as relays and capacitors. The fixture includes a base plate 1 with several mounting posts 11 on its top for fixing the base 100, several clamps 2 disposed on the top of the base plate 1 and distributed around the base 100 for fixing some components in the inverter, a first positioning block 3 detachably disposed on the top of the base plate 1 and located on one side of the base 100 for positioning the 060 copper busbars, and a second positioning block 4 disposed on the top of the base plate 1. The first positioning block 3 is located on the other side of the base plate 100 and is positioned opposite to the first positioning block 3. It is used to fix the PCBA board. The third positioning block 5 is located on the top of the base plate 1 and between the base plate 100 and the second positioning block 4. It is used to fix the choke. The positioning component 6 is located on the top of the base plate 1 and adjacent to the first positioning block 3. It is used to fix the 040 copper busbar and the 050 copper busbar. The above fixture completes the spatial posture coordination control of multiple components with a purely mechanical structure. While ensuring assembly accuracy, it greatly reduces the dependence on high-energy-consuming drive units and imported precision guide rails, providing a reliable guarantee for the efficient and safe assembly of the inverter, and also greatly saving costs.

[0032] The above structures will be described in detail below.

[0033] In this embodiment, please refer to Figure 1 and Figure 5The clamp 2 includes a clamping platform 211, a clamping rod element 212, a linkage element 213, and a handheld element 214. One end of the clamping rod element 212 is rotatably connected to the clamping platform 211, and the other end is provided with a positioning pin 2121. The end of the handheld element 214 is rotatably connected to the clamping platform 211, and both ends of the linkage element 213 are rotatably connected to the clamping rod element 212 and the handheld element 214, respectively. The above arrangement cleverly utilizes the linkage transmission principle. When the operator rotates the handheld element 214 towards the base 100, the smooth push and pull of the intermediate linkage element 213 will cause the clamping rod element 212 to rotate along the base 100, so that the positioning pin 2121 on the clamping rod element 212 presses down on the component in the inverter placed on the base 100, thereby fixing its position and preventing it from shifting, so as to avoid affecting the subsequent assembly of components in other inverters.

[0034] Following the above, the aforementioned mechanical linkage design precisely translates the operator's hand movements into the arc trajectory of the positioning pin 2121. When the positioning pin 2121 contacts the corresponding component in the inverter, the positioning pin 2121 will be subjected to force due to the rotation of the clamping component, thereby pressing down on the contact surface that contacts the component in the inverter, thus stabilizing the position of the component in the inverter on the base 100.

[0035] In this embodiment, there are six clamps 2, which are named first clamp 21, second clamp 22, third clamp 23, fourth clamp 24, fifth clamp 25 and sixth clamp 26 for ease of description. The first clamp 21 is used to clamp the dual contactor and is located on the side of the corner of the base 100. The second clamp 22 and the third clamp 23 are located on both sides of the third positioning block 5 and are used to fix the choke. The fourth clamp 24 is located on the side of the first positioning block 3 and is used to fix the relay. The fifth clamp 25 is located on the side of the positioning block 6 and is used to fix the capacitor. As for the sixth clamp 26, it is used to fix other components in the inverter. The clamps 2 are fixed in position and are used to fix different components. The clamps 2 cooperate with each other to complete the assembly of the complete inverter.

[0036] In this embodiment, the base plate 1 is provided with a support platform, and the bottom of the first positioning block 3 is provided with a bolt. The first positioning block 3 is threadedly connected to the support platform through the bolt to achieve a detachable connection with the support platform. The side of the first positioning block 3 facing the base 100 is provided with a first copper busbar positioning pin 31 in the vertical direction. The first copper busbar positioning pin 31 is used to insert and fix the 060 copper busbar. This design is mainly to fix one end of the 060 copper busbar, thereby maintaining the state of the 060 copper busbar and ensuring that the other end of the 060 copper busbar can be quickly connected to other components. The above design prevents the operator from repeatedly bending or folding the other end of the 060 copper busbar in order to ensure that the 060 copper busbar is stably connected to other components. In this embodiment, the other components are double contactors.

[0037] In this embodiment, please refer to Figures 1-3 The second positioning block 4 has a symmetrical locking position 41 on the top of the side facing the base 100, and a locking platform 42 at its bottom that cooperates with the locking position 41 to limit the PCBA board. Specifically, after the PCBA board is positioned correctly, the top two ends of the PCBA board are engaged with the corresponding locking position 41, and the bottom abuts against the top surface of the locking platform 42, thereby making the PCBA board stable in the predetermined position.

[0038] Following the above description of the third positioning block 5, the third positioning block 5 is mainly used to position the choke ring. Specifically, the choke ring is sleeved on the outside of the third positioning block 5. At this time, the choke ring is limited to this position and will not wobble. The operator can fix the choke ring on the base 100 through the second clamp 22 and the third clamp 23.

[0039] Obviously, the orientation of the second positioning block 4 and the third positioning block 5 on the base plate 1 ensures that the assembled PCBA board and the choke are in a stable relative state, making it easy for operators to further assemble and connect the PCBA board and the choke without worrying about any of the structures shaking and thus affecting the assembly accuracy.

[0040] In this embodiment, the third positioning block 5 is provided with a first positioning hole 51 and a second positioning hole 52. The first positioning hole 51 and the second positioning hole 52 are respectively adapted to the insertion and fixing of the 070 copper busbar and the 080 copper busbar. Specifically, this design is to ensure that the ends of the 070 copper busbar and the 080 copper busbar are inserted into the choke coil side by side to avoid shaking. That is, the positioning hole design further stabilizes the ends of the 070 copper busbar and the 080 copper busbar in a predetermined position, thereby ensuring that the other end of the 070 copper busbar and the 080 copper busbar can be stably assembled with other components. The other end of the 070 copper busbar is connected to a double contactor, and the other end of the 080 copper busbar is connected to a single contactor.

[0041] Regarding positioning component 6, please refer to... Figure 3 and Figure 4In this embodiment, the positioning component 6 includes a sliding element 61, an abutting element 62, a push plate 63, and a rotating telescopic component 64. The sliding element 61 is slidably mounted on the top of the base plate 1 via a slide rail 611. The abutting element 62 is fixed to the top of the base plate 1 and adjacent to the sliding element 61. The push plate 63 is located on the side of the sliding element 61, and its side facing the abutting element 62 has at least one second copper busbar positioning pin 631. Correspondingly, the side of the abutting element 62 facing the push plate 63 has an insertion hole that mates with the second copper busbar positioning pin 631. The rotating telescopic component 64 is located on the abutting element 62, wherein one end of the 040 copper busbar is inserted into the second copper busbar positioning pin. The pin 631 is also fixed by a rotating telescopic component 64. This arrangement uses a sliding element 61 to slide on a slide rail 611, thereby adjusting the distance between the push plate 63 and the abutment element 62, so that the second copper busbar positioning pin 631 passes through the corresponding insertion hole and is inserted into one end of the 040 copper busbar. When the end of the 040 copper busbar is inserted into the second copper busbar positioning pin 631, the rotating telescopic component 64 applies pressure to the end of the 040 copper busbar, pressing the 040 copper busbar tightly against the inner wall of the abutment element 62, thereby fixing the end of the 040 copper busbar. This design also makes it easy for operators to quickly and accurately assemble the other end of the 040 copper busbar with other components, which are single contactors.

[0042] It should be noted that in this embodiment, there are two second copper busbar positioning pins 631. In reality, the number of second copper busbar positioning pins 631 can also be three, four, etc., depending on the structural dimensions of the positioning.

[0043] As for the specific structure of the abutting element 62, in this embodiment, the abutting element 62 includes a first abutting block 621, a second abutting block 622 and a third abutting block 623. The first abutting block 621 is disposed facing the push plate 63, and the third abutting block 623 is disposed opposite to the first abutting block 621. The second abutting block 622 connects the first and third abutting blocks 623. It should be noted that the first abutting block is the side of the abutting element 62 facing the push plate 63.

[0044] The distance between the second abutting block 622 and the base plate 1 is smaller than the distance between the first abutting block 621 and the base plate 1. The inner side of the second abutting block 622 is provided with a vertical limiting plate 6221 for limiting the 050 copper busbar. This setting is also to facilitate fixing one end of the 050 copper busbar, thereby ensuring that the operator can stably and accurately assemble the other end of the 050 copper busbar with other components.

[0045] Specifically, the rotary telescopic component 64 is installed on the third abutment block 623. The rotary telescopic component 64 extends and retracts towards the first abutment block 621 to press the 040 copper busbar against the inner side of the first abutment block 621. In fact, the rotary telescopic component 64 belongs to the prior art. The structure mainly consists of a rotary handle, a transmission component, a telescopic rod, and a guide component. Its working principle is as follows: the rotation of the rotary handle is converted into linear thrust through an internal transmission mechanism (such as a threaded pair or a cam mechanism), which drives the telescopic rod to move axially along the guide component. The end of the telescopic stroke is fixed in position by a self-locking device, realizing reliable conversion and positioning of rotary input and linear output. Specifically, the operator uses the rotary telescopic component 64 to press the structure that is attached to the inner side of the first abutment block 621, thereby fixing its position.

[0046] To ensure uniform force distribution at the ends of the 040 copper busbar, the telescopic end of the rotating telescopic component 64 is equipped with a pressure block, which is used to press the ends of the 040 copper busbar.

[0047] This application simplifies inverter assembly and makes it more reliable. It cleverly solves the problem of coordinating the positioning of multi-specification copper busbars and large-volume components through a fully mechanical structure. Operators only need to place the 040 copper busbar on the sliding positioning pin and rotate the tightening mechanism with pressure block to apply force evenly to fix the end and prevent deformation. The 060 copper busbar is naturally guided into place by the detachable pin, the 050 copper busbar is inserted into the stepped limit block in one step, and the 070 / 080 copper busbars are precisely inserted into the dedicated anti-misalignment hole. The choke ring is firmly fitted into the positioning seat, and the ring clamp 2 locks the relay and other components. This user-friendly design not only saves the expensive pneumatic system and imported guide rails, but also allows all components to be precisely positioned at the millimeter level in one clamping. It saves costs and completely eliminates the trouble of terminal misalignment and rework caused by manual adjustment.

[0048] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. All equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A fixture for assisting in the assembly of an inverter, the inverter comprising a base, a dual contactor, 060 copper busbars, 040 copper busbars, 050 copper busbars, 070 copper busbars, 080 copper busbars, a choke, a PCBA board, a single contactor, and a relay, characterized in that, The fixtures include: The base plate has several mounting posts on its top for fixing the base. Several clamps are disposed on the top of the base plate and distributed around the base, for fixing some components in the inverter; The first positioning block is detachably mounted on the top of the base plate and located on one side of the base, for positioning the 060 copper busbar; The second positioning block is disposed on the top of the base plate and on the other side of the base, and is disposed opposite to the first positioning block, for fixing the PCBA board; The third positioning block is disposed on the top of the base plate and located between the base and the second positioning block, and is used to fix the choke ring; A positioning element is disposed on the top of the base plate and located adjacent to the first positioning block, for fixing the 040 copper busbar and the 050 copper busbar.

2. The jig of claim 1, wherein The clamping component includes a clamping platform, clamping rod elements, linkage elements, and hand-held elements; One end of the clamping rod element is rotatably connected to the clamping platform, and the other end is provided with a positioning pin; The end of the handheld element is rotatably connected to the clamping platform, and both ends of the linkage element are rotatably connected to the clamping rod element and the handheld element, respectively.

3. The jig of claim 1, wherein The first positioning block has a first copper busbar positioning pin in the vertical direction on the side facing the base. The first copper busbar positioning pin is used to insert and fix the 060 copper busbar.

4. The fixture according to claim 1, characterized in that, The positioning block has symmetrical locking positions on the top of the side facing the base, and a locking platform at its bottom that cooperates with the locking positions to limit the PCBA board.

5. The fixture according to claim 1, characterized in that, The third positioning block is provided with a first positioning hole and a second positioning hole, which are respectively adapted to the insertion and fixing of the 070 copper busbar and the 080 copper busbar.

6. The fixture according to claim 1, characterized in that, The positioning element includes: A sliding element is slidably mounted on the top of the base plate via a slide rail; An abutting element is fixed to the top of the base plate and adjacent to the sliding element; A push plate is provided on the side of the sliding element, facing the abutting element and having at least one second copper busbar positioning pin. A rotating telescopic component is provided on the abutting element; One end of the 040 copper busbar is inserted into the positioning pin of the second copper busbar, and this end is also pressed and fixed by the rotating telescopic component.

7. The fixture according to claim 6, characterized in that, The abutment element includes: The first abutment block is positioned facing the push plate; The third abutment block is disposed opposite to the first abutment block; The second abutment block connects the first and third abutment blocks; The distance between the second abutting block and the base plate is less than the distance between the first abutting block and the base plate, and a vertical limiting plate is provided on the inner side of the second abutting block to limit the 050 copper busbar.

8. The tool of claim 7, wherein, The rotating telescopic component is installed on the third abutment block; The rotating telescopic component extends and retracts towards the first abutting block to press the 040 copper busbar against the inside of the first abutting block.

9. The fixture according to claim 8, characterized in that, The telescopic end of the rotating telescopic component is provided with a pressure block, which is used to press the end of the 040 copper busbar.

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