Shockproof structure and power conversion device

Abstract

The application discloses an anti-vibration structure and a power conversion device, and belongs to the technical field of vehicle-mounted chargers. The anti-vibration structure comprises a clamping part and a fixing part, wherein at least one clamping groove is arranged on the clamping part and used for clamping a device in a target device; the fixing part is arranged on one side of the clamping part and is used for fixing the clamping part on a shell of the target device. The anti-vibration structure is arranged on the inside of a terminal mounting area of the target device, and the device is clamped in the clamping groove, so that the anti-vibration performance of the device can be effectively improved, and the risk of the device falling off in a vibration environment can be obviously reduced. In this way, the reliability of the device can be greatly improved, the service life of the device can be prolonged, and the device can stably operate in various complex environments, so that a user can have a safer and more reliable use experience.

Description

Technical Field

[0001] This application relates to the field of on-board charger technology, and in particular to a shockproof structure and power conversion device. Background Technology

[0002] An on-board charger (OBC) is a vehicle-side charging device that also functions as a power conversion device, and is typically fixedly installed inside the vehicle. Because construction machinery vehicles operate in harsh environments for extended periods, facing not only rugged and bumpy road conditions but also frequent and severe vibrations, the OBC needs to have high shock resistance.

[0003] However, OBCs currently perform poorly in handling vibration environments, and in harsh environments, they are prone to detachment, causing performance failures. Utility Model Content

[0004] The main purpose of this application is to provide a shockproof structure and power conversion device, which aims to solve the problem that OBCs perform poorly in vibration environments and are prone to falling off in harsh environments.

[0005] To achieve the above objectives, this application provides a shockproof structure, comprising: a snap-fit ​​portion and a fixing portion, wherein the snap-fit ​​portion is provided with at least one snap-fit ​​groove for snapping onto a component inside a target device; the fixing portion is disposed on one side of the snap-fit ​​portion and is used to fix the snap-fit ​​portion to the housing of the target device.

[0006] Optionally, the fixing part is a plate-shaped structure, and the side of the fixing part opposite to the snap-fit ​​part is attached to and connected to the housing of the target device.

[0007] Optionally, the fixing part has an adhesive area on the side opposite to the snap-fit ​​part, and the adhesive area is bonded to the housing of the target device.

[0008] Optionally, the end of the fixing part is provided with a buckle, which engages with the housing of the target device.

[0009] Optionally, the buckle includes a stepped area facing the housing of the target device, and the housing of the target device has a snap-fit ​​hole at a position opposite to the stepped area, the stepped area being adapted to fit into the snap-fit ​​hole.

[0010] Optionally, the snap-fit ​​portion is provided with at least two snap-fit ​​grooves, and the at least two snap-fit ​​grooves are arranged sequentially in the thickness direction of the snap-fit ​​portion.

[0011] Optionally, the length of the fixing part is less than the length of the snap-fit ​​part.

[0012] Optionally, at least one reinforcing rib is provided on both the side of the snap-fit ​​portion facing the fixing portion and the side of the snap-fit ​​portion away from the fixing portion.

[0013] In addition, to achieve the above objectives, this application also provides a power conversion device, comprising: a housing, a PCB board, at least two conductive bars, and at least one shock-absorbing structure as described in any of the above claims. A terminal mounting area is provided on one side of the housing, and at least one mounting hole is provided in the terminal mounting area for placing wiring terminals. The PCB board is disposed inside the housing. One end of each of the at least two conductive bars is connected to the PCB board, and the other end is connected to a wiring terminal. At least one shock-absorbing structure as described in any of the above claims is disposed inside the terminal mounting area. The at least two conductive bars are snapped into the snap-fit ​​groove.

[0014] Optionally, the shock-absorbing structure has two parallel snap-fit ​​slots with a gap between them, and each of the conductive bars is arranged parallel to each other.

[0015] The shockproof structure provided in this application includes a snap-fit ​​part and a fixing part. The snap-fit ​​part has a snap-fit ​​groove for snapping onto components within the target device. The fixing part is located on one side of the snap-fit ​​part and is used to fix the snap-fit ​​part to the housing of the target device. Based on this shockproof structure, in practical applications, the shockproof structure can be placed inside the terminal mounting area of ​​the target device. Specifically, components in the target device are snapped into the snap-fit ​​groove of the shockproof structure, and the snap-fit ​​part of the shockproof structure is fixed to the housing of the target device. This ensures that the components are securely and reliably fixed inside the target device, avoiding the risk of them falling off under vibration. This not only significantly improves the reliability of the device but also extends its service life, ensuring stable operation in various complex environments, thus providing users with a safer and more reliable user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a shock-resistant structure provided in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the internal structure of a power conversion device provided in an embodiment of this application;

[0018] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0019] Figure 4 for Figure 3 Another perspective structural diagram.

[0020] In the diagram, 1 is the snap-fit ​​part; 101 is the snap-fit ​​groove; 102 is the reinforcing rib; 2 is the fixing part; 201 is the adhesive area; 202 is the buckle; 3 is the housing; 4 is the PCB board; and 5 is the conductive busbar.

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] 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.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] 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, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. 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.

[0026] Please see Figure 1 The first embodiment of this application provides a shockproof structure, which may include a snap-fit ​​part 1 and a fixing part 2. The snap-fit ​​part 1 is provided with at least one snap-fit ​​groove 101 for snapping a device inside the target device. The fixing part 2 is provided on one side of the snap-fit ​​part 1 and is used to fix the snap-fit ​​part 1 to the housing of the target device.

[0027] Specifically, the anti-vibration structure provided in this application includes a snap-fit ​​part 1 and a fixing part 2. The snap-fit ​​part 1 is provided with a snap-fit ​​groove 101 for snapping onto components inside the target device. The fixing part 2 is disposed on one side of the snap-fit ​​part 1 and is used to fix the snap-fit ​​part 1 to the housing of the target device. Based on this anti-vibration structure, in practical applications, the anti-vibration structure can be installed inside the terminal mounting area of ​​the target device. Specifically, components in the target device are snapped into the snap-fit ​​groove 101 of the anti-vibration structure, and the snap-fit ​​part 1 of the anti-vibration structure is fixed to the housing of the target device. This ensures that the components are securely and reliably fixed inside the target device, avoiding the risk of them falling off under vibration. In this way, not only can the reliability of the device be greatly improved, but the service life of the device can also be extended, ensuring stable operation in various complex environments, thereby providing users with a safer and more reliable user experience.

[0028] It should be noted that the fixing part 2 can be designed as a plate-like structure with a certain thickness. This design can not only significantly increase its overall strength, but also effectively improve its structural stability.

[0029] In practical applications, the snap-fit ​​slot 101 can be opened at an appropriate position on the snap-fit ​​part 1 according to actual needs. Generally speaking, with Figure 1 Taking the direction shown as a reference, the snap-fit ​​grooves 101 are formed on the snap-fit ​​portion 1 from bottom to top. At the same time, if there are two or more snap-fit ​​grooves 101, the spacing between adjacent snap-fit ​​grooves 101 is the same. The depth of all snap-fit ​​grooves 101 is also the same.

[0030] Please see Figure 1 In one possible implementation, the fixing part 2 is a plate-shaped structure, and the side of the fixing part 2 opposite to the snap-fit ​​part 1 is attached to and connected to the housing of the target device.

[0031] The way the fixing part 2 fits against the target equipment's housing ensures that the shock-absorbing structure is securely installed on the target equipment and is not easily loosened. To achieve a better fit, the fixing part 2 can be made of a material with a certain degree of elasticity and wear resistance, such as rubber or silicone. These materials not only provide good fit and sealing but also absorb vibrations to a certain extent, further improving shock resistance. Furthermore, various connection methods can be used between the fixing part 2 and the target equipment's housing, such as bolt connection, magnetic attraction, snap-fit ​​fixing, or adhesive bonding. The choice of these connection methods should be determined based on the actual application scenario and equipment requirements to ensure the reliability and stability of the shock-absorbing structure. In specific implementation, the appropriate connection method and the material of the fixing part 2 can be selected according to the material and structural characteristics of the target equipment's housing to achieve the best shock-absorbing effect. For example, when the target equipment's housing is made of plastic, adhesive bonding can be used to fix the shock-absorbing structure to the housing, ensuring a secure connection.

[0032] Please see Figure 1 In one possible implementation, the fixing part 2 is provided with an adhesive area 201 on the side opposite to the snap-fit ​​part 1, and the adhesive area 201 is bonded to the housing of the target device.

[0033] Specifically, the adhesive area 201 can be pre-coated with double-sided tape or other high-adhesion adhesive before installation. This is to ensure a strong and tight bond between the shock-absorbing structure and the target equipment housing during installation. The specific shape and size of the adhesive area 201 need to be planned and adjusted according to the contact surface of the target equipment housing to ensure optimal adhesion. This pre-coating method not only simplifies the entire installation process, reduces operation steps and time, but also significantly improves the stability and vibration resistance of the shock-absorbing structure after installation, thereby better protecting internal components and extending the equipment's lifespan.

[0034] In general, the adhesive area 201 is rectangular. By setting the adhesive area 201 to a rectangular shape, a sufficiently large contact area between the adhesive area 201 and the target equipment housing can be ensured, thereby improving the strength and stability of the bond. The adhesive area 201 can be made of an adhesive with high adhesion and weather resistance to ensure good bonding performance in various environments. During installation, simply attach the adhesive area 201 of the shock-absorbing structure to the corresponding position on the target equipment housing and apply appropriate pressure to achieve a firm bond. This bonding method is not only simple to operate but also effectively improves the shock resistance performance of the shock-absorbing structure, ensuring the stable operation of the target equipment in harsh environments.

[0035] Please see Figure 1In one possible implementation, the end of the fixing part 2 is provided with a buckle 202, which engages with the housing of the target device.

[0036] In this embodiment, the design of the snap-fit ​​202 enhances the connection strength between the shock-absorbing structure and the target equipment housing, effectively preventing loosening or detachment of the shock-absorbing structure due to vibration or other external forces during use. The shape and size of the snap-fit ​​202 perfectly match the snap-fit ​​holes or slots on the target equipment housing, thus achieving a stable and reliable snap-fit ​​effect. During installation, the operator only needs to accurately align the snap-fit ​​202 with the corresponding snap-fit ​​holes or slots on the target equipment housing and then apply appropriate pressure to press it in place, allowing the snap-fit ​​202 to be tightly snapped into place with the target equipment housing. This snap-fit ​​method is not only simple to operate and easy to implement, but also ensures a tight and secure connection between the shock-absorbing structure and the target equipment housing, thereby significantly improving the overall shock resistance performance.

[0037] The shock-resistant structure provided in this application, through its rational structural design and carefully selected high-performance materials, significantly enhances shock resistance and effectively reduces the risk of device detachment under vibration. This shock-resistant structure is suitable not only for various target devices requiring high shock resistance, but also plays a crucial role in devices with extremely high safety requirements, such as vehicle-mounted OBCs. Its application provides a robust guarantee for the safe operation of vehicles under complex road conditions, ensuring the stability and reliability of vehicle electronic equipment in vibration environments.

[0038] Furthermore, the buckle 202 includes a stepped area facing the housing of the target device, and a snap-fit ​​hole is provided on the housing of the target device at a position opposite to the stepped area, wherein the stepped area is adapted to fit into the snap-fit ​​hole.

[0039] In this embodiment, the stepped area further enhances the stability and reliability of the connection between the latch 202 and the target equipment housing. The stepped area not only improves the seismic resistance of the shock-absorbing structure but also ensures the stable operation of the target equipment in harsh environments.

[0040] In other embodiments, the stepped area may extend into the terminal opening area of ​​the OBC, reusing the terminal opening and eliminating the need for additional snap-fit ​​holes.

[0041] Please see Figure 1 In one possible implementation, the snap-fit ​​portion 1 is provided with at least two snap-fit ​​slots 101, and the at least two snap-fit ​​slots 101 are arranged sequentially in the thickness direction of the snap-fit ​​portion 1.

[0042] Specifically, the two snap-fit ​​slots 101 can be respectively set at different positions of the snap-fit ​​part 1 to simultaneously snap onto both positive and negative devices. This method not only improves the utilization rate of the shock-absorbing structure but also makes the device layout more compact and reasonable, further saving space and reducing the volume of the shock-absorbing structure. The shape and size of the two snap-fit ​​slots 101 can be designed according to actual needs to ensure the best snap-fit ​​effect. In practical applications, an appropriate shock-absorbing structure can be selected according to the specific requirements of the target equipment and factors such as the number and size of the devices, and the devices can be snapped into the corresponding snap-fit ​​slots 101 to achieve the best shock resistance effect.

[0043] Furthermore, in one possible implementation, the length of the fixing part 2 is less than the length of the snap-fit ​​part 1.

[0044] The length of the fixing part 2 is shorter than the length of the snap-fit ​​part 1. This design allows the shockproof structure to maintain sufficient strength while being more compact, facilitating flexible arrangement within limited installation space. The fixing part 2 is mainly responsible for connecting to the target device housing; its moderate length is sufficient to meet the fixing requirements, and it does not need to be excessively long. The snap-fit ​​part 1, however, needs to be long enough to accommodate the snap-fit ​​slot 101 and ensure that the device can be securely snapped into it. Therefore, designing the length of the fixing part 2 to be shorter than the length of the snap-fit ​​part 1 satisfies functional requirements while optimizing the structural layout.

[0045] Specifically, the length of the fixing part 2 can be set to half the length of the snap-fit ​​part 1. This setting can maximize material cost savings and improve production efficiency while ensuring the stability of the shock-absorbing structure. Of course, the specific length of the fixing part 2 should be determined according to the actual application scenario and equipment requirements to achieve the best shock-absorbing effect and economic benefits. For example, if the length of the fixing part 2 is too long, it will not only waste materials, but also make it inconvenient to fix it to the housing of the target equipment.

[0046] Furthermore, in one possible implementation, the snap-fit ​​part 1 and the fixing part 2 are integrally formed.

[0047] In this embodiment, the snap-fit ​​part 1 and the fixing part 2 adopt an integral molding structure, which can greatly improve the overall strength and stability of the shockproof structure. This integral molding design reduces the connection gaps between components, thereby reducing the risk of loosening or falling off due to vibration. At the same time, the integral molding structure is also simpler to manufacture and process, which helps to reduce production costs and improve production efficiency.

[0048] In target equipment, the installation of anti-vibration structures is crucial for improving the equipment's seismic performance and stability. The anti-vibration structure provided in this application, through reasonable structural design and material selection, effectively improves seismic performance and reduces the risk of component detachment. Furthermore, its compact structural layout and simple manufacturing process make this anti-vibration structure widely applicable in practical applications.

[0049] Please see Figure 1 In one possible implementation, at least one reinforcing rib 102 is provided on both the side of the snap-fit ​​portion 1 facing the fixing portion 2 and the side of the snap-fit ​​portion 1 away from the fixing portion 2.

[0050] The design of the reinforcing ribs 102 has been optimized based on the original design. Its core purpose is to significantly enhance the overall structural strength of the snap-fit ​​part 1, thereby effectively improving its resistance to deformation and ensuring excellent performance under various operating environments. These reinforcing ribs 102 can flexibly extend along the length or width of the snap-fit ​​part 1 to form a rib-like structural layout. This structure can efficiently disperse and resist various external vibration forces, ensuring the stability and reliability of the snap-fit ​​part 1 under complex working conditions.

[0051] In this embodiment, by incorporating reinforcing ribs 102, the snap-fit ​​part 1 exhibits superior stability and durability when bearing the weight of heavy components such as devices and the impact forces experienced in high-vibration environments, significantly extending the service life of the equipment. Furthermore, the specific layout and quantity of the reinforcing ribs 102 are not fixed but can be flexibly adjusted according to actual application scenarios and specific needs to ensure optimal reinforcement in every situation, thereby maximizing the overall performance of the snap-fit ​​part 1.

[0052] Furthermore, in one possible implementation, the contact portion 1 and the fixing portion 2 are connected by an arc segment at their junction.

[0053] Specifically, the junction between the snap-fit ​​part 1 and the fixing part 2 employs a rounded arc connection design. This design not only significantly optimizes the appearance of the seismic-resistant structure, making it look smoother and more aesthetically pleasing, but more importantly, it fundamentally enhances the structure's strength and seismic performance. The introduction of the rounded arc makes the transition area at the connection smoother and more natural, effectively reducing stress concentration and thus largely preventing structural cracking or damage caused by external vibrations. This design not only significantly enhances the overall stability and reliability of the seismic-resistant structure but also significantly extends its service life, enabling the seismic-resistant structure to maintain good working condition for a longer period.

[0054] In target equipment, the stability and durability of the seismic-resistant structure are key factors ensuring its continuous and safe operation. Even minor structural defects or performance deficiencies can lead to equipment malfunctions or even safety accidents during operation. The seismic-resistant structure provided in this application, through the use of arc-segment connections and other design techniques, not only effectively improves the structure's seismic performance but also significantly enhances its ability to withstand external vibrations. This series of optimization measures provides a solid guarantee for the safe and stable operation of the target equipment, ensuring that it maintains efficient and reliable operation in various complex environments.

[0055] Furthermore, the target equipment includes power conversion devices, and the devices are busbars, including copper busbars or aluminum busbars.

[0056] In this embodiment, the target device is specifically a power conversion device, and the component is specifically a copper busbar or aluminum busbar. This design makes the vibration-damping structure more targeted and applicable in practical applications. Under normal circumstances, power conversion devices often generate significant vibrations during operation, and the stability and reliability of the copper or aluminum busbar, as a crucial conductive component, have a vital impact on the overall performance of the device. If other materials are chosen for conductivity, both conductivity and cost-effectiveness cannot be achieved simultaneously.

[0057] As an optional implementation, please refer to Figures 2 to 4 The second embodiment of this application provides a power conversion device, which may include: a housing 3, a PCB board 4, at least two conductive bars 5, and at least one shockproof structure as described in any of the above claims. A terminal mounting area is provided on one side of the housing 3, and at least one mounting hole is provided on the terminal mounting area for placing a wiring terminal. The PCB board 4 is disposed inside the housing 3. One end of the at least two conductive bars 5 is connected to the PCB board 4, and the other end is connected to the wiring terminal. At least one shockproof structure as described in any of the above claims is disposed inside the terminal mounting area. The at least two conductive bars 5 are snapped into the snap-fit ​​groove 101.

[0058] In this embodiment, the housing 3 of the power conversion device is made of a high-strength material, a choice intended to ensure excellent structural strength and long-term durability. The specific shape and size of the housing 3 are not fixed but can be flexibly designed and adjusted according to the specific needs of the actual application scenario to adapt to the usage requirements of different power conversion devices in different environments. A terminal mounting area is specifically provided on one side of the housing 3, with at least one mounting hole. The main function of these mounting holes is for installing and fixing wiring terminals, and the end of the conductive bus 5 is connected to the wiring terminal.

[0059] As a core component of the power conversion device, the PCB board 4 plays a crucial role in connecting and controlling various circuit elements. In this embodiment, the PCB board 4 is housed inside the housing 3 and electrically connected to at least two conductive busbars 5. Through the rational layout and meticulous circuit design of the PCB board 4, the high-efficiency operation and stable performance of the power conversion device can be effectively achieved. The optimized design of the PCB board 4 not only improves the overall performance of the device but also ensures the coordinated operation between various circuit elements.

[0060] The busbars 5 act as conductive elements in the power conversion equipment, and their main function is to efficiently transmit electrical energy to various load terminals. In this embodiment, at least two busbars 5 are connected at one end to the PCB board 4 and at the other end to the terminal block, thereby ensuring the normal flow of current. In addition, by snapping the busbars 5 into the snap-fit ​​slots 101 of the shock-resistant structure, the shock resistance of the busbars 5 can be significantly improved, effectively reducing the risk of poor contact or damage caused by vibration.

[0061] As a key component in this embodiment, the number and specific location of the anti-vibration structure can be flexibly adjusted according to actual application requirements. In this embodiment, multiple anti-vibration structures are arranged inside the terminal mounting area and closely fitted with the conductive busbar 5. By reasonably setting and using the anti-vibration structure, the vibration resistance of the power conversion equipment can be significantly improved, ensuring stable operation of the equipment in various harsh environments. At the same time, the compact design and simple installation method of the anti-vibration structure also provide broad application prospects for this power conversion equipment in practical applications, enabling it to perform excellently in various complex environments.

[0062] Furthermore, the shock-resistant structure has two parallel snap-fit ​​slots 101 with a gap between them, and each conductive bar 5 is arranged in parallel to each other.

[0063] Specifically, a single shock-absorbing structure can simultaneously secure two conductive bars 5, and through isolation and fixation, electrical safety is ensured. The conductive bars 5 are arranged in parallel to each other. This layout not only maximizes the space utilization of the conductive bars 5 but also effectively prevents them from contacting each other after being subjected to vibration, eliminating potential safety hazards.

[0064] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A shock-resistant structure, characterized in that, include: The snap-fit ​​part (1) is provided with at least one snap-fit ​​groove (101) for snapping into a device inside the target device; A fixing part (2) is provided on one side of the snap-fit ​​part (1), and the fixing part (2) is used to fix the snap-fit ​​part (1) to the housing of the target device.

2. The earthquake-resistant structure according to claim 1, characterized in that, The fixing part (2) is a plate-shaped structure. The side of the fixing part (2) opposite to the snap-fit ​​part (1) is attached to and connected to the housing of the target device.

3. The shock-resistant structure according to claim 2, characterized in that, The fixing part (2) has an adhesive area (201) on the side opposite to the snap-fit ​​part (1), and the adhesive area (201) is bonded to the housing of the target device.

4. The shock-resistant structure according to claim 2, characterized in that, The end of the fixing part (2) is provided with a buckle (202), which engages with the housing of the target device.

5. The shock-resistant structure according to claim 4, characterized in that, The buckle (202) includes a stepped area facing the housing of the target device. The housing of the target device has a snap-fit ​​hole at a position opposite to the stepped area, and the stepped area is adapted to fit into the snap-fit ​​hole.

6. The earthquake-resistant structure according to claim 1, characterized in that, The snap-fit ​​portion (1) is provided with at least two snap-fit ​​grooves (101), and the at least two snap-fit ​​grooves (101) are arranged sequentially in the thickness direction of the snap-fit ​​portion (1).

7. The earthquake-resistant structure according to claim 1, characterized in that, The length of the fixing part (2) is less than the length of the snap-fit ​​part (1).

8. The earthquake-resistant structure according to claim 1, characterized in that, At least one reinforcing rib (102) is provided on both the side of the snap-fit ​​part (1) facing the fixing part (2) and the side of the snap-fit ​​part (1) away from the fixing part (2).

9. A power conversion device, characterized in that, include: The housing (3) has a terminal mounting area on one side, and at least one mounting hole is provided on the terminal mounting area for placing wiring terminals; PCB board (4) is disposed inside the housing (3); At least two conductive bars (5) are connected at one end to the PCB board (4) and at the other end to the terminal block; At least one anti-vibration structure as described in any one of claims 1 to 8 is disposed on the inner side of the terminal mounting area; At least two of the conductive bars (5) are snapped into the snap-in groove (101).

10. The power conversion device according to claim 9, characterized in that, The shockproof structure has two parallel snap-fit ​​slots (101) with a gap between them, and each of the conductive bars (5) is arranged in parallel to each other.

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