Multi-dimensional limiting oil cooling controller wiring assembly capable of being quickly disassembled and maintained

Abstract

The invention relates to the field of electrical equipment wiring, and particularly discloses a multi-dimensional limiting oil cooling controller wiring assembly capable of being quickly disassembled and maintained, which comprises a controller shell, a terminal and a silver-plated copper busbar, a plurality of detachable modules are arranged in the controller shell; the detachable module comprises a mounting block and a multi-dimensional precision constraint frame; a plurality of modular mounting vacancies matched with the mounting blocks are arranged in the controller shell; a through hole for placing the multi-dimensional precise constraint frame is formed in the mounting block, and a limiting hole which is through in the front-back direction and right faces the through hole is formed in the multi-dimensional precise constraint frame; the silver-plated copper busbar and the terminal are oppositely inserted from the front side and the rear side of the limiting hole respectively to form electrical contact; the terminal comprises a high-strength crimping assembly and a wiring part. The high-strength crimping assembly and one end of the silver-plated copper busbar are stacked and pressed in the limiting hole; and the wiring part passes through the limiting hole and horizontally extends to the outer side of the controller shell. The stability, reliability and maintenance convenience of the device are remarkably improved, and the device is suitable for long-term reliable operation under severe working conditions.

Description

Technical Field

[0001] The invention relates to the field of electrical equipment wiring, and in particular to a multi-dimensional limit oil cooling controller wiring assembly that can be quickly disassembled and maintained. Background Art

[0002] With the continuous advancement of industrial technology, oil cooling technology is increasingly used in high-power electrical equipment (such as inverters, generators, etc.). Oil cooling systems are widely used due to their excellent heat dissipation effect. However, existing wiring devices face many technical challenges in oil cooling environments, mainly in the following aspects: 1) The wiring device of the traditional oil cooling controller requires high-precision assembly. A slight deviation between the terminal and the copper busbar may lead to poor contact and affect the electrical performance.

[0003] The assembly steps of the existing device are complicated, which increases the production cost and the difficulty of workers' operation.

[0004] 2) Oil-cooled controllers are usually used in high-vibration, high-temperature environments (such as motors, inverters, etc.). After long-term operation, the traditional terminals and copper busbar connections are prone to loosening, resulting in unstable contact resistance.

[0005] 3) The oil-cooled controller needs to be highly sealed to prevent oil from seeping in and affecting the conductivity of the terminals and copper bars. The traditional wiring method is prone to accumulating oil and metal dust during long-term operation, resulting in increased contact resistance.

[0006] 4) When maintaining the wiring device of the traditional oil cooling controller, the entire casing needs to be disassembled, which is time-consuming and labor-intensive. When the terminal or copper busbar is damaged, it is difficult to replace it separately and the entire device needs to be disassembled, increasing maintenance costs.

[0007] 5) Traditional copper busbars will generate a lot of heat when running under high load and high current. If the heat dissipation is poor, the terminal contact resistance will increase, affecting the electrical performance and may even cause damage due to local overheating.

[0008] Existing oil-cooled controllers usually rely on external heat dissipation systems, but the heat dissipation performance of the terminal blocks is not specifically optimized, making it difficult to solve the problem of local overheating.

[0009] In summary, it is particularly important to design a wiring device with high mechanical strength and capable of long-term stable operation in an oil-cooled environment. Summary of the invention

[0010] In order to solve the above-mentioned technical problems existing in the prior art, the purpose of the present invention is to provide a multi-dimensional limit oil cooling controller wiring assembly that can be quickly disassembled and maintained, aiming to provide a modular, easy to install and maintain wiring solution with good electrical contact performance, which is particularly suitable for electrical equipment in high voltage, high power and oil cooling environments.

[0011] To achieve the above object, the present invention adopts the following technical solutions: A multi-dimensional limit oil-cooled controller wiring assembly that can be quickly disassembled and maintained, comprising a controller housing, terminals, and silver-plated copper busbars; a plurality of detachable modules are provided inside the controller housing; the detachable module includes a mounting block and a multi-dimensional precision constraint frame; A plurality of modular mounting spaces adapted to the mounting blocks are provided inside the controller housing; A through hole for placing the multi-dimensional precision constraint frame is provided inside the mounting block, and a limiting hole that is vertically through and faces the through hole is provided inside the multi-dimensional precision constraint frame; the silver-plated copper busbar and the terminal are respectively inserted from the front and rear sides of the limiting hole in opposite directions and form electrical contact; The terminal includes a high-strength crimping assembly and a wiring part; the high-strength crimping assembly is stacked with one end of the silver-plated copper busbar and pressed tightly inside the limiting hole; the wiring part passes through the limiting hole and extends horizontally to the outside of the controller housing for connection to an external circuit.

[0012] As a preferred technical solution, horizontal support plate assemblies are provided on the left and right inner walls of the limiting hole, a limiting space is formed between the two support plate assemblies and is matched with the left and right end faces of the terminal and the silver-plated copper busbar; the bottom of the high-strength crimping assembly of the terminal is supported by support columns provided inside the limiting hole; bolt connection holes are provided at the top of the multi-dimensional precision constraint frame, the mounting block, and the controller housing, and anti-loosening bolts are inserted into the bolt connection holes from the top of the controller housing to uniformly press the terminal and the silver-plated copper busbar.

[0013] As a preferred technical solution, plane tooth groove structures that can cooperate with each other are provided on the sides of the high-strength crimping assembly of the terminal connected to the silver-plated copper busbar.

[0014] As a preferred technical solution, the high-strength crimping assembly of the terminal is further provided with positioning posts, and the silver-plated copper busbar is provided with long through holes that cooperate with the positioning posts.

[0015] As a preferred technical solution, a horizontal joint with a hollow structure is provided outside the limiting hole, one end of the horizontal joint is provided with an external thread and is threadedly connected to the outer wall of the multi-dimensional precision constraint frame, the other end of the horizontal joint extends to the outside of the controller housing, and the inner hole of the horizontal joint is communicated with the limiting hole. During assembly, the high-strength crimping assembly of the terminal passes through the inner hole of the horizontal joint from outside the device and is connected to the silver-plated copper busbar; after assembly, the wiring part of the terminal is supported by the horizontal joint.

[0016] As a preferred technical solution, the silver-plated copper busbar is a strip-shaped conductor, one end thereof away from the terminal extends to the outside of the limiting hole, and its top and bottom are respectively supported by support connection structures to the controller housing.

[0017] As a preferred technical solution, the support connection structure respectively includes an upper fixing bolt and a lower fixing bolt located at the top and bottom of the silver-plated copper busbar.

[0018] The advantages and positive effects of the present invention are as follows: (1) Solve the problems of assembly accuracy and process complexity: Modular installation block design: The detachable multi-dimensional precision constraint frame + installation block is adopted, which can be pre-positioned, reduce manual adjustment errors, and improve assembly accuracy.

[0019] Planar tooth groove structure: The contact surfaces of the terminals and the copper busbar adopt a mutually mating tooth groove structure to ensure automatic alignment after insertion and improve electrical conductivity reliability.

[0020] Quick-install horizontal joint design: A horizontal joint is arranged outside the limit hole, and the terminal can be quickly inserted from the outside without disassembling the entire controller, greatly improving the assembly convenience.

[0021] (2) Solve the stability problems of the wiring terminals (seismic resistance and anti-loosening): Three-dimensional limit structure: The terminal fixing method adopts a limit hole + support plate assembly + anti-loosening bolt to provide limits in the three-dimensional directions of transverse, longitudinal, and axial, significantly enhancing stability.

[0022] Double-bolt connection structure: The top and bottom of the copper busbar are clamped by an upper fixing bolt + a lower fixing bolt. Compared with the traditional single-bolt fixing method, the seismic performance is improved, and the loosening problem caused by high-frequency vibration is effectively prevented.

[0023] (3) Solve the problems of sealing and protection: Closed horizontal joint design of the terminal and the copper busbar: The patent adopts a horizontal joint with a hollow structure. The terminal can be inserted from the outside, and at the same time, a physical shielding layer is formed to reduce the intrusion of external oil stains.

[0024] High-precision fitting of the terminal and the copper busbar: The terminal crimping part and the copper busbar adopt a planar tooth groove structure + multi-dimensional precision constraint frame + positioning post fitting to ensure the tight combination of the terminal and the copper busbar, reduce the possibility of oil stain infiltration, and improve long-term reliability.

[0025] (4) Solve the problems of maintenance and reliability: Quick-disassembly limit structure: The multi-dimensional precision constraint frame, the installation block, and the terminal module are all detachable structures. During maintenance, only the anti-loosening bolt needs to be loosened to replace the terminal or the copper busbar without disassembling the entire controller.

[0026] Standardized replaceable terminal design: The terminals and the copper busbars are designed as standardized components, which are convenient for replacement, reduce maintenance costs and time.

[0027] Upper cover type bolt design: The patent adopts externally adjustable anti-loosening bolts, which can be tightened or loosened without disassembling the entire housing, greatly improving the maintenance convenience.

[0028] (5) Further optimize the heat dissipation performance and enhance the high-load operation ability: Adopt silver-plated copper bars to improve conductivity and heat dissipation ability: Silver is plated on the surface of the copper bar. Utilizing the high conductivity and high thermal conductivity of silver (the conductivity of silver is 1.05 times that of copper, and the thermal conductivity is 1.08 times that of copper), the contact resistance is reduced, and heat generation is decreased. The silver-plated layer can also effectively prevent the oxidation of the copper bar surface, avoid the decline of conductivity after long-term use, and improve the long-term stability of the equipment.

[0029] Optimize the heat dissipation path and enhance the overall cooling effect: Combine with a multi-dimensional precision constraint frame to optimize the heat conduction path of the contact surface between the copper bar and the terminal, so that the heat is evenly distributed and local overheating is avoided. Through the modular quick-disassembly structure, the copper bar is easier to replace, facilitating maintenance and improving the flexibility of the heat dissipation components.

[0030] Reduce the resistance fluctuation in high-temperature environments and enhance reliability: The resistance of traditional copper bars may increase in high-temperature environments, resulting in increased power loss. This patent adopts silver-plated copper bars, which still maintain a low contact resistance in high-temperature environments, improving long-term stability.

[0031] In summary, the multi-dimensional limited oil-cooled controller wiring assembly with quick-disassembly maintenance significantly improves the stability, reliability, and maintenance convenience of the equipment through innovative modular design, three-dimensional stereoscopic limiting structure, planar tooth groove structure, horizontal joint design, double-bolt connection structure, standardized replaceable parts, upper cover design, and application of high-strength materials, and is especially suitable for long-term reliable operation under harsh working conditions. Description of the Drawings Figure 1 It is an external schematic diagram of the controller housing in the present invention; Figure 2 It is an internal schematic diagram of the controller housing in the present invention; Figure 3 It is a schematic diagram of the terminal in the present invention; Figure 4 It is a schematic diagram of the silver-plated copper busbar in the present invention; Figure 5 It is an assembly schematic diagram of the silver-plated copper busbar and the terminal in the present invention; Figure 6 It is an assembly schematic diagram of the silver-plated copper busbar and the terminal in the multi-dimensional precision constraint frame in the present invention; Figure 7 It is an exploded view of the silver-plated copper busbar, the terminal, the multi-dimensional precision constraint frame, and the horizontal joint in the present invention; Figure 8It is a schematic structural diagram of the multi-dimensional precision restraint frame and the terminal in the present invention.

[0033] In the figure: 1. Controller housing; 2. Mounting block; 2-1. Through hole; 3. Multi-dimensional precision restraint frame; 3-1. Limiting hole; 3-2. Support plate assembly; 3-3. Support column; 4. Terminal; 4-1. High-strength crimping assembly; 4-2. Wiring part; 4-3. Support column; 4-4. Plane tooth groove structure; 5. Silver-plated copper busbar; 5-1. Long through hole; 6. Locking bolt; 7. Horizontal joint; 8. Upper fixing bolt; 9. Lower fixing bolt. Specific embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1 As Figures 1 to 8 shown, this embodiment discloses a multi-dimensional limit oil-cooled controller wiring assembly that can be quickly disassembled and maintained, including a controller housing 1 and multiple detachable modules inside it; the detachable modules include a mounting block 2, a multi-dimensional precision restraint frame 3, a terminal 4, and a silver-plated copper busbar 5. The controller housing 1 serves as the main structural support of this device and is carefully crafted from a high-strength, high-temperature, and corrosion-resistant alloy material, ensuring its long-term stable operation in the oil-cooled environment. To further improve the heat dissipation performance, the controller housing 1 is specially designed with multiple ventilation holes to promote air circulation and optimize the oil-cooled environment.

[0036] There are multiple mounting vacancies adapted to the mounting block 2 inside the controller housing 1; the layout of the mounting vacancies is based on a modular design to achieve the independent installation and replacement of each module.

[0037] The mounting block 2 is provided with a through hole 2-1 for placing the multi-dimensional precision restraint frame 3, and the multi-dimensional precision restraint frame 3 is provided with a limiting hole 3-1 that is transparent from front to back and is aligned with the through hole 2-1; the silver-plated copper busbar 5 and the terminal 4 are respectively inserted from the front and back sides of the limiting hole 3-1 and form electrical contact. The terminal 4 includes a high-strength crimping assembly 4-1 and a wiring part 4-2; the high-strength crimping assembly 4-1 is stacked with one end of the silver-plated copper busbar 5 and pressed tightly in the limiting hole 3-1; the wiring part 4-2 passes through the limiting hole 3-1 and extends horizontally to the outside of the controller housing 1 for connecting to an external circuit. The left and right inner walls of the limiting hole 3-1 are provided with horizontal support plate assemblies 3-2, and a limiting space is formed between the two support plate assemblies 3-2 to ensure cooperation with the left and right end faces of the terminal 4 and the silver-plated copper busbar 5, effectively suppressing lateral displacement.

[0038] In the vertical direction, the device adopts a distributed support system, that is, the bottom of the high-strength crimping assembly 4-1 of the terminal 4 is supported by the support column 3-3 arranged in the limiting hole 3-1; bolt connection holes are provided at the tops of the three-dimensional precision constraint frame 3, the mounting block 2 and the controller housing 1, and these connection holes are formed in one time by a numerical control machining center to ensure the coaxiality between components. After the terminal 4 and the silver-plated copper busbar 5 are inserted, they are fastened by high-strength anti-loosening bolts 6, which can achieve uniform pressing on the top of the silver-plated copper busbar 5; during installation, the operator puts the anti-loosening bolts 6 into the bolt connection holes and rotates them to press the silver-plated copper busbar 5 downward, so as to achieve close contact with the terminal 4. At the same time, in order to reduce the maintenance time and maintenance cost and significantly improve the operation efficiency and service life of the equipment, when the silver-plated copper busbar 5 or the terminal 4 is worn or deformed, the silver-plated copper busbar 5 can be loosened from the terminal 4 by rotating the anti-loosening bolts 6, and it can be quickly replaced without disassembling the whole device.

[0039] That is, the device realizes the lateral and longitudinal constraints on the terminal 4 and the silver-plated copper busbar 5 through the three-dimensional multi-precision constraint frame 3: in the horizontal direction, the double support plate structure can effectively resist lateral shear force; in the vertical direction, the distributed support system can evenly disperse the pressing force to avoid stress concentration; in the axial direction, the anti-loosening bolts 6 ensure a long-term stable pressing effect. This structure can keep the connection part in stable electrical performance and is especially suitable for long-term reliable operation under harsh working conditions.

[0040] To solve the problem of poor contact of the existing wiring device, plane tooth groove structures 4-4 that can cooperate with each other are provided on one side of the high-strength crimping assembly 4-1 of the terminal 4 connected to the silver-plated copper busbar 5. This structure not only plays a role of plugging and guiding during assembly, but also can prevent the terminal 4 from undergoing lateral displacement in a high-voltage or high-vibration environment, and significantly increases the contact area between the terminal 4 and the silver-plated copper busbar 5, thereby effectively reducing the contact resistance, reducing heat accumulation, and extending the service life of the equipment. Further, the high-strength crimping assembly 4-1 of the terminal 4 is also provided with positioning posts, and the silver-plated copper busbar 5 is provided with long through holes 5-1 that cooperate with the positioning posts. The positioning posts can be adjusted in the front and back positions in the long through holes 5-1 but cannot move laterally, so as to determine the assembly positions of the terminal 4 and the silver-plated copper busbar 5 through the positioning posts and further limit the generation of lateral displacement between the terminal 4 and the silver-plated copper busbar 5.

[0041] Preferably, in order to ensure that the terminal 4 always remains horizontal during installation and use, a horizontal joint 7 with a hollow structure is provided outside the limit hole 3-1. One end of the horizontal joint 7 has an external thread and is threadedly connected to the outer wall of the multi-dimensional precision restraint frame 3. The other end of the horizontal joint 7 extends to the outside of the controller housing. The inner hole of the horizontal joint 7 is communicated with the limit hole 3-1. During assembly, the high-strength crimping component 4-1 of the terminal 4 passes through the horizontal joint 7 from outside the device and is connected to the silver-plated copper busbar 5. At the same time, since the wiring part 4-2 of the terminal 4 is relatively long as a whole, the horizontal joint 7 plays a supporting role for the wiring part 4-2 of the terminal 4, enabling it to always maintain balance.

[0042] Preferably, the terminal 4, as the core component of electrical connection, is made of copper material with high hardness and excellent electrical conductivity, and can provide a stable electrical connection under high-current conditions. The longitudinal cross-sectional shape of the terminal 4 is a trapezoidal structure.

[0043] The silver-plated copper busbar 5 is a strip-shaped conductor. One end thereof far from the terminal 4 extends to the outside of the limit hole 3-1. Its top and bottom are each supported by a support connection structure to the controller housing 1 so that the silver-plated copper busbar 5 is kept horizontal. The connection between the terminal 4 and the wire is likely to become loose due to external force or environmental stress during long-term operation. In terms of material selection, the present invention uses a silver-plated copper busbar to improve electrical conductivity and heat dissipation capacity: silver is plated on the surface of the copper busbar. The electrical conductivity of silver is 1.05 times that of copper, and the thermal conductivity is 1.08 times that of copper. By utilizing the high electrical conductivity and high thermal conductivity of silver, the contact resistance is reduced and heat generation is reduced. The silver-plated layer can also effectively prevent the surface of the copper busbar from oxidation, avoid the decline of electrical conductivity after long-term use, and improve the long-term stability of the equipment.

[0044] Specifically, the support connection structures respectively include an upper fixing bolt 8 and a lower fixing bolt 9 located at the top and bottom of the silver-plated copper busbar 5. The formed double-bolt connection can effectively enhance the stability of the silver-plated copper busbar 5 and prevent displacement or poor contact caused by vibration or temperature fluctuation. After completion of assembly, use a multimeter to check the electrical contact resistance between the silver-plated copper busbar 5 and the terminal 4 to ensure that it is within the allowable range.

[0045] In the present invention, both the silver-plated copper busbar 5 and the copper terminal 4 are designed as standardized replaceable components, which enables the application of standardized components to be easily realized both in the initial assembly stage of the equipment and in the later maintenance and replacement processes, ensuring the long-term use of the equipment. At the same time, it also provides convenience for maintenance, enabling maintenance personnel to quickly replace components, reducing maintenance costs, and improving the overall working efficiency of the equipment.

[0046] To further improve the maintenance efficiency, the bolt structure of the present invention adopts an upper cover design, which enables maintenance personnel to complete the adjustment and tightening of bolts without opening the controller housing 1. The design of the present invention greatly simplifies the maintenance process and improves the operation convenience, and is particularly suitable for electrical equipment that requires frequent maintenance.

[0047] The materials selected for the present invention have all been strictly screened. The silver-plated copper busbar 5 and the copper terminal 4 use high-purity copper materials, and the bolts are made of high-strength alloy steel, which can effectively withstand high loads and maintain stable electrical connections for a long time.

[0048] Embodiment 2 This embodiment discloses an assembly method for the above-mentioned multi-dimensional limit oil-cooled controller wiring assembly that can be quickly disassembled and maintained, including the following steps: S1. Place the multi-dimensional precision constraint frame 3 in the mounting block 2, and place the assembled mounting block 2 in the corresponding mounting vacancy of the controller housing 1; S2. Place one end of the silver-plated copper busbar 5 at an appropriate position in the limit hole 3-1, and fix the other end to the controller housing 1 through the upper fixing bolt 8 and the lower fixing bolt 9 respectively; S3. Insert the high-strength crimping assembly 4-1 of the terminal 4 into the limit hole 3-1 through the horizontal joint 7, align the respective planar tooth groove structures on the terminal 4 and the silver-plated copper busbar 5, and insert the terminal 4 along the direction of the planar tooth groove until the positioning post is embedded in the long through hole 5-1 of the silver-plated copper busbar 5 to achieve the engagement of the terminal 4 and the silver-plated copper busbar 5; S4. Insert the locknut 6 from the top of the controller housing 1 and tighten it with a wrench to press the terminal 4 and the silver-plated copper busbar 5 downward.

[0049] The above-given embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential addition or replacement made by those skilled in the art according to the technical features of the technical solution of the present invention shall fall within the protection scope of the present invention.

Claims

1. A multi-dimensional limit oil cooling controller wiring assembly that can be quickly disassembled and maintained, comprising a controller housing, terminals and a silver-plated copper busbar; characterized in that: A plurality of detachable modules are arranged inside the controller housing; the detachable modules include a mounting block and a multi-dimensional precision constraint frame; The controller housing is provided with a plurality of modular installation spaces adapted to the installation blocks; The mounting block is provided with a through hole for placing the multi-dimensional precision constraint frame, and the multi-dimensional precision constraint frame is provided with a limiting hole which is transparent from front to back and directly faces the through hole; the silver-plated copper busbar and the terminal are respectively inserted from the front and back sides of the limiting hole towards each other to form electrical contact; The terminal includes a high-strength crimping assembly and a wiring part; the high-strength crimping assembly is stacked with one end of the silver-plated copper busbar and pressed tightly in the limiting hole; the wiring part extends horizontally through the limiting hole to the outside of the controller housing for connection to an external circuit.

2. The multi-dimensional limit oil cooling controller wiring assembly capable of quick disassembly and maintenance as claimed in claim 1, characterized in that: Horizontal support plate assemblies are provided on the left and right inner walls of the limiting hole, and a limiting space is formed between the two support plate assemblies and cooperates with the left and right end faces of the terminal and the silver-plated copper busbar; the bottom of the high-strength crimping assembly of the terminal is supported by a support column arranged in the limiting hole; bolt connection holes are provided on the top of the multi-dimensional precision constraint frame, the mounting block and the controller housing, and anti-loosening bolts are inserted into the bolt connection holes from the top of the controller housing to evenly press the terminal and the silver-plated copper busbar.

3. The multi-dimensional limit oil cooling controller wiring assembly capable of quick disassembly and maintenance as claimed in claim 1, characterized in that: The side where the terminal high-strength crimping assembly is connected to the silver-plated copper busbar is provided with a planar tooth-groove structure that can cooperate with each other.

4. The multi-dimensional limit oil cooling controller wiring assembly capable of quick disassembly and maintenance as claimed in claim 1, characterized in that: The terminal high-strength crimping assembly is also provided with a positioning column, and the silver-plated copper busbar is provided with a long through hole that cooperates with the positioning column.

5. The multi-dimensional limit oil cooling controller wiring assembly capable of quick disassembly and maintenance as claimed in claim 1, characterized in that: A horizontal joint with a hollow structure is provided on the outside of the limiting hole, one end of the horizontal joint is connected to the multi-dimensional precision constraint frame, and the other end of the horizontal joint extends to the outside of the controller housing. The inner hole of the horizontal joint is connected to the limiting hole. During assembly, the high-strength crimping component of the terminal passes through the inner hole of the horizontal joint from the outside of the device and is connected to the silver-plated copper busbar; after assembly, the wiring part of the terminal is supported by the horizontal joint.

6. The multi-dimensional limit oil cooling controller wiring assembly capable of quick disassembly and maintenance as claimed in claim 1, characterized in that: The silver-plated copper busbar is a strip-shaped conductor, one end of which is away from the terminal and extends to the outside of the limiting hole, and the top and bottom of the busbar are supported by the controller housing through supporting connection structures.

7. The multi-dimensional limit oil cooling controller wiring assembly capable of quick disassembly and maintenance as claimed in claim 6, characterized in that: The supporting connection structure comprises upper fixing bolts and lower fixing bolts located at the top and bottom of the silver-plated copper busbar, respectively.

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