High-voltage busbar connecting and fixing device

Abstract

The invention discloses a high-voltage busbar connecting and fixing device, relates to the technical field of connecting devices, and solves the problem of how to effectively fix a busbar and avoid safety accidents. Comprising a sleeve frame and a seat body, the sleeve frame and the seat body enclose to form a mounting cavity for penetration of a power bar, and the mounting cavity fits the shape of the power bar in the length direction; the seat body is supported between the bottom of the electric bar and the installation position of the electric bar, the sleeve frame outer sleeve surrounds the side direction and the top of the electric bar and is detachably connected with the seat body, and the sleeve frame is further fixed to the installation position of the electric bar through a fastener. The support of the seat body to the electric bar ensures that no direct contact exists between the high-voltage electric bar and a fixed position, and the contact area with the high-voltage electric bar is increased through the surrounding protection of the sleeve frame and the fitting arrangement of the mounting cavity, so that the friction between the electric bar and a fixed part caused by vibration and impact is avoided, and the risk of abrasion of an insulating layer is reduced; the detachable connection design of the sleeve frame and the seat body enables the installation and disassembly processes of the electric bar to be more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of connection devices, in particular to a high-voltage power busbar connection and fixing device. Background Art

[0002] In the conductive connection system, the high-voltage busbar plays a vital role, which is responsible for the efficient transmission of current between the target locations. Given the extremely compact internal space of the system, the reasonable planning of the high-voltage busbar layout is related to the safety, stability and overall performance of the system. However, there are considerable risks in the fixing method related to the layout. The traditional fixing method is to simply bundle the busbar with a cable tie, or bind it to a fixed position. The cable tie is in direct contact with the insulating surface of the busbar, and the local area is therefore subjected to the continuous restraining force exerted by the cable tie. During the operation of the vehicle, the inevitable vibration and impact will cause subtle but frequent friction between the busbar and the cable tie on the contact surface. Over time, this repeated friction will gradually weaken the insulating protective layer on the surface of the busbar, causing wear and even damage to the insulating material. Once the insulating layer is damaged, the exposed busbar may accidentally contact the structural parts in the fixed position, causing serious electrical accidents such as short circuits and arc discharges.

[0003] In addition, in the electrical layout, the high-voltage busbar serves as a current transmission bridge connecting key target locations. When the target locations are far apart and need to span a large spatial distance, a single long busbar is traditionally used for connection. However, the manufacturing cost of the long busbar is significantly increased, which is not only reflected in the cost of the material itself, but also covers the additional costs of processing, transportation and storage. The space occupied by the long busbar in the inventory is much larger than that of the short busbar. In addition, the flexibility of the long busbar when bending or turning is greatly reduced, which increases the difficulty of installation and layout. If two short high-voltage busbars are connected, the connection between the two high-voltage busbars depends on a dedicated connector. Existing connectors are often expensive, which increases the cost of the overall line system. In addition, the installation and maintenance process of dedicated connectors is relatively complicated and may require professional tools and skills, which not only prolongs the assembly time, but also may increase potential failure points. Summary of the invention

[0004] Purpose of the invention: In order to overcome the defects of the prior art, the present invention provides a high-voltage busbar connection and fixing device to solve the problem of how to effectively fix the busbar and avoid safety accidents, and to achieve efficient connection between long-distance busbars while reducing costs and operational complexity.

[0005] The technical solution of the present invention includes a sleeve, a seat body and a power bar, the sleeve and the seat body together form an installation cavity for the power bar to penetrate, and the installation cavity fits the shape of the power bar in the length direction; the seat body is supported between the bottom of the power bar and the installation position of the power bar, the sleeve outer sleeve surrounds the two sides of the power bar in the width direction and the top in the thickness direction, and is detachably connected to the seat body, and the sleeve is also fixed to the installation position of the power bar by fasteners.

[0006] By adopting the above technical solution, the support of the busbar by the base ensures that there is no direct contact between the high-voltage busbar and the fixed position. The contact area with the high-voltage busbar is increased through the surrounding protection of the sleeve and the fitting setting of the installation cavity, avoiding friction between the busbar and the fixing part caused by vibration and impact, thereby reducing the risk of wear of the insulation layer. The detachable connection design of the sleeve and the base makes the installation and disassembly process of the busbar more convenient.

[0007] In a possible design, the seat body has support parts at both ends in the axial direction, and the sleeve frame has surrounding parts at both ends in the axial direction. The surrounding parts have fastening parts extending laterally, and the surrounding parts surround the periphery of the support parts. The fasteners are fixed on the fastening parts.

[0008] With the above design, the supporting part and the surrounding part are arranged at the two axial ends, which means that the high-voltage busbar is firmly supported and protected at both ends in its length direction. Moreover, the surrounding part cooperates with the supporting part, not only covering the side and top of the busbar, but also further fixing it through the fastening part, forming a closed protection frame, thereby enhancing the structural rigidity of both ends of the busbar.

[0009] In a possible design, a plurality of cross-shaped reinforcing ribs are integrally provided on the outer surface of the sleeve, and the reinforcing ribs are arranged along the axial direction of the sleeve.

[0010] With the above design, the cross-shaped reinforcement ribs can significantly improve the bending and torsional resistance of the sleeve and enhance its overall structural strength.

[0011] In a possible design, the sleeve frame and the seat body are detachably connected via a snap-fit ​​structure.

[0012] With the above design, when the high-voltage busbar needs to be inspected or replaced, the snap-on structure enables the operator to easily separate the sleeve frame and the seat body, thereby simplifying the installation and maintenance process and saving time and labor costs.

[0013] In a possible design, the buckle structure includes an oblique protrusion and a locking hole, and the oblique protrusion and the locking hole form a locking connection.

[0014] With the above design, the oblique protrusion and the card hole have an automatic positioning effect, which can guide the sleeve and the seat body to be correctly aligned, reduce errors in the assembly process, and ensure that each installation is accurate and in place.

[0015] In a possible design, the mounting cavity has a height equal to the thickness of two electrode bus bars so as to allow two stacked electrode bus bars to pass through.

[0016] With the above design, by stacking the power bars, space can be saved in the vertical direction, thereby providing more installation locations for other components and making the overall design more compact.

[0017] In a possible design, the two electric bars are in contact with each other and connected to form a connection position between the two, and the connection position is located in the installation cavity.

[0018] By adopting the above design, the two busbars are contacted and connected with each other in the installation cavity, so that current transmission of the two busbars is realized. It is suitable as a transit connection point for long-distance line transmission. Compared with using a single long busbar, the processing and manufacturing process of the two short busbars is relatively simple, which reduces the processing difficulty and time, and reduces the manufacturing cost. The storage space occupied by the short busbar is much smaller than that of the long busbar, which helps to optimize inventory management and reduce warehousing costs. Moreover, the short busbar is easier to layout and install in a small space, especially in situations where turning or adapting to complex structures is required, and the installation is more flexible. In addition, in terms of structural complexity, the two busbars are contacted and connected and are fixed by a sleeve and a seat body. The structure is simple, which ensures good electrical contact. No special and complex connectors are required, and the operation is convenient and efficient.

[0019] In a possible design, the connection points of the two busbars are fastened to each other by a screw member.

[0020] With the above design, the bolts ensure close contact between the two busbars, reduce contact resistance, improve current transmission efficiency, and reduce the risk of electrical failure due to poor contact. The fixing method of the bolts is simple and convenient, which enables quick connection of the busbars and simplifies the installation process. No special tools are required for operation, which reduces the difficulty of disassembly and maintenance.

[0021] In a possible design, the sleeve frame and the seat body are respectively integrally provided with an upper blocking portion and a lower blocking portion, and the upper blocking portion and the lower blocking portion are respectively located in the installation cavity, the upper blocking portion protrudes from the sleeve frame toward the direction close to the lower layer of the electric bus and is limited by the end of the upper layer of the electric bus, and the lower blocking portion protrudes from the seat body toward the direction close to the upper layer of the electric bus and is limited by the end of the lower layer of the electric bus.

[0022] With the above design, the upper blocking portion and the lower blocking portion can respectively abut against the ends of the upper and lower electric buses, ensuring the accurate position of the electric bus in the installation cavity and preventing the electric bus from being displaced under vibration or external force, thereby providing a precise limiting effect. In addition, the ends of the upper and lower electric buses can be contacted and connected in the installation cavity, so that the sleeve and the seat body can serve as a structure for protecting the connection position of the two, with a wider range of uses.

[0023] In a possible design, an operating hole is opened on the sleeve frame, a top cover is detachably mounted on the operating hole, and the operating hole is aligned with the top of the arrangement bolt member.

[0024] The above design allows necessary installation and maintenance to be carried out through the operation hole with only the top cover removed, thereby reducing the tedious work of overall large-scale disassembly and improving the efficiency of on-site operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention; Figure 2 It is a structural schematic diagram of a second specific embodiment of the present invention; Figure 3 It is a cross-sectional view of a second specific embodiment of the present invention; Figure 4 It is an exploded view of the second specific embodiment of the present invention; Figure 5 It is a structural schematic diagram of a specific embodiment 3 of the present invention; Figure 6 It is an exploded view of the third specific embodiment of the present invention.

[0026] Among them, 1, sleeve frame; 11, surrounding part; 12, fastening part; 13, reinforcing rib; 14, upper blocking part; 15, operation hole; 16, top cover; 2. seat body; 21. support portion; 22. lower blocking portion; 3. Installation cavity; 4. Electric busbar; 41. Bolts; 5. Fasteners; 6. snap-fit ​​structure; 61. oblique protrusion; 62. snap-fit ​​hole. DETAILED DESCRIPTION Embodiment 1

[0027] like Figure 1 The high-voltage electric busbar connection and fixing device shown includes a sleeve 1 and a seat body 2. The inner sides of the sleeve 1 and the seat body 2 are enclosed to form an installation cavity 3 for an electric busbar 4 to pass through. The installation cavity 3 fits the outer shape of the electric busbar 4 in the axial length direction. The seat body 2 is supported between the bottom of the electric busbar 4 in the thickness direction and the installation position of the electric busbar 4. The sleeve 1 outer cover surrounds the side of the electric busbar 4 in the width direction and the top of the thickness direction. The sleeve 1 and the seat body 2 are detachably connected. The sleeve 1 is also fixed to the installation position of the electric busbar 4 by fasteners 5. When installing the electric busbar 4, first place the seat body 2 at the target installation position, then place the electric busbar 4 above the seat body 2, then cover the sleeve 1 on the electric busbar 4, and fix the sleeve 1 and the seat body 2, and finally tighten the fasteners 5 to fix the sleeve 1 at the installation position. Of course, the electric busbar 4 can also be directly passed through the installation cavity 3 of the assembled sleeve 1 and seat body 2.

[0028] The two ends of the seat body 2 in the axial direction have support portions 21, and the support portions 21 are thicker than the middle position of the seat body 2; the two ends of the sleeve frame 1 in the axial direction have surrounding portions 11, and the surrounding portions 11 have fastening portions 12 extending laterally, and the surrounding portions 11 surround the two sides of the periphery of the support portion 21, and the fasteners 5 are fixed on the fastening portions 12. The fastening portion 12 is located on the sleeve frame 1 instead of the seat body 2, which helps to effectively fix the electric bus 4. If the installation position is located on the seat body 2 through the fastening portion 12, the vibration is transmitted to the seat body 2, and the sleeve frame 1 is abnormally detached due to the vibration, causing the electric bus 4 to be disengaged and fail to be fixed. Therefore, the fastening portion 12 is set on the sleeve frame 1. Even if the seat body 2 is detached due to vibration, the sleeve frame 1 can still limit the electric bus 4, ensuring that the electric bus 4 will not completely disengage due to the instability of the seat body 2, and the limit of the electric bus 4 is maintained.

[0029] The outer surface of the sleeve 1 is integrally provided with a plurality of cross-shaped reinforcing ribs 13, which are arranged along the axial direction of the sleeve 1. The cross-shaped reinforcing ribs 13 help to enhance the structural strength of the sleeve 1 in the length direction and the width direction of the sleeve 1, and improve the fixing effect of the sleeve 1.

[0030] The sleeve frame 1 and the base body 2 are detachably connected by a plurality of snap structures 6. Specifically, the snap structure 6 includes an oblique protrusion 61 and a snap hole 62, and the oblique protrusion 61 and the snap hole 62 are snapped. The oblique protrusion 61 is located on the sleeve frame 1, and the snap hole 62 is located on the base body 2. In order to ensure the fixing effect, the oblique protrusion 61 is also provided on the base body 2, and the snap hole 62 is also provided on the sleeve frame 1. The snap structure 6 is mainly used to prevent the base body 2 from being separated along the length direction and guide the sleeve frame 1 and the base body 2 to be correctly aligned.

[0031] The fastener 5 can be a threaded member such as a screw, a stud, etc. Embodiment 2

[0032] like Figure 2-Figure 4 As shown, different from the first embodiment, the mounting cavity 3 has a height of two or more than two electric bars 4 thicknesses, so that two or more stacked electric bars 4 can completely penetrate. Taking two electric bars 4 as an example, the two electric bars 4 are stacked along the thickness direction, the upper electric bar 4 contacts the sleeve frame 1, and the lower electric bar 4 contacts the seat body 2, so that multiple electric bars 4 only need one sleeve frame 1 and seat body 2 to play a role of fixing and protecting, requiring less space and saving costs. Embodiment 3

[0033] like Figure 5 , Figure 6As shown, unlike the second embodiment, the electric bus 4 only penetrates the installation cavity 3, and does not completely penetrate the installation cavity 3. Instead, the ends of the two electric bus 4 penetrate into the installation cavity 3, and the two electric bus 4 are in contact and connected with each other in the installation cavity 3, so that the two electric bus 4 can transmit current, which is very suitable as a transit connection point for long-distance line transmission. In this way, this embodiment can not only fix the electric bus 4 at a preset position, but also transmit the current connecting the two electric bus 4, which significantly expands the scope of use. When it is necessary to cross a long distance, multiple short electric bus 4 can be flexibly connected in series to achieve the best layout and space utilization.

[0034] In order to ensure close contact between the two electric bars 4, a bolt member 41 is provided at the connection position of the two electric bars 4. The two electric bars 4 are fastened to each other by the bolt member 41 so that the two electric bars 4 are in close contact, thereby improving the current transmission efficiency and reducing the contact resistance. Moreover, the installation, adjustment and removal of the bolt member 41 do not require special tools, which not only simplifies the installation process, but also facilitates the subsequent maintenance and repair.

[0035] The housing 1 and the seat 2 are respectively provided with an upper blocking portion 14 and a lower blocking portion 22, which are respectively located in the installation cavity 3. The upper blocking portion 14 protrudes from the housing 1 toward the direction close to the lower electric bus 4 and is limited by the end of the upper electric bus 4, and the lower blocking portion 22 protrudes from the seat 2 toward the direction close to the upper electric bus 4 and is limited by the end of the lower electric bus 4. The upper electric bus 4 is inserted until the upper blocking portion 14 is inserted, and the lower electric bus 4 is inserted until the lower blocking portion 22 is inserted. The ends of the upper electric bus 4 and the lower electric bus 4 can be contacted and connected in the installation cavity 3 to realize electrical transmission between the upper electric bus 4 and the lower electric bus 4. Therefore, this embodiment can also be used as a fixed protective device for the connection position of the electric bus 4. In addition, the bottom surface of the upper blocking portion 14 contacts the outer surface of the lower layer electric bus 4 , thereby limiting the position of the lower layer electric bus 4 and guiding the lower layer electric bus 4 into the installation cavity 3 ; similarly, the lower blocking portion 22 corresponds to limiting and guiding the upper layer electric bus 4 .

[0036] In order to facilitate the connection and tightening operation of the contact connection position, an operation hole 15 is opened on the sleeve frame 1, and a top cover 16 is detachably installed on the operation hole 15, and the bolt member 41 is directly opposite to the operation hole 15 or placed in the operation hole 15. After removing the top cover 16, a tool is inserted into the operation hole 15 to tighten or maintain the connection position, thereby ensuring that the two electric bars 4 are firmly connected.

Claims

1. A high voltage busbar connection fixture, characterized in that: The invention comprises a sleeve frame (1), a seat body (2) and an electric bus (4); the sleeve frame (1) and the seat body (2) together form an installation cavity (3) into which the electric bus (4) is inserted, and the installation cavity (3) fits the outer shape of the electric bus (4) in the length direction; the seat body (2) is supported between the bottom of the electric bus (4) and the installation position of the electric bus (4); the sleeve frame (1) surrounds the two sides of the electric bus (4) in the width direction and the top in the thickness direction, and is detachably connected to the seat body (2); the sleeve frame (1) is also fixed to the installation position of the electric bus (4) by a fastener (5).

2. The high-voltage busbar connection and fixing device according to claim 1, characterized in that: The seat body (2) has support portions (21) at both ends in the axial direction, and the sleeve frame (1) has surrounding portions (11) at both ends in the axial direction. The surrounding portions (11) have fastening portions (12) extending laterally. The surrounding portions (11) surround the periphery of the support portion (21), and the fastener (5) is fixed on the fastening portion (12).

3. The high-voltage busbar connection and fixing device according to claim 1 or 2, characterized in that: The outer surface of the sleeve (1) is integrally provided with a plurality of cross-shaped reinforcing ribs (13), and the reinforcing ribs (13) are arranged along the axial direction of the sleeve (1).

4. The high-voltage busbar connection and fixing device according to claim 1 or 2, characterized in that: The sleeve frame (1) and the seat body (2) are detachably connected via a snap-fit ​​structure (6).

5. The high-voltage busbar connection and fixing device according to claim 4 is characterized in that: The buckle structure (6) comprises an oblique protrusion (61) and a locking hole (62), and the oblique protrusion (61) and the locking hole (62) form a locking connection.

6. The high-voltage busbar connection and fixing device according to claim 1 or 2, characterized in that: The mounting cavity (3) has a height equal to the thickness of two electric bars (4) so ​​as to allow two stacked electric bars (4) to penetrate therein.

7. The high-voltage busbar connection and fixing device according to claim 6, characterized in that: The two electric bars (4) are in contact with each other and connected to form a connection position between the two, and the connection position is located in the installation cavity (3).

8. The high-voltage busbar connection and fixing device according to claim 7, characterized in that: The connection points of the two electric bars (4) are fastened to each other and in contact with each other via a bolt member (41).

9. The high-voltage busbar connection and fixing device according to claim 7, characterized in that: The sleeve frame (1) and the seat body (2) are respectively integrally provided with an upper blocking portion (14) and a lower blocking portion (22); the upper blocking portion (14) and the lower blocking portion (22) are respectively located in the mounting cavity (3); the upper blocking portion (14) protrudes from the sleeve frame (1) towards the direction close to the lower layer electric bus (4) and abuts against the end of the upper layer electric bus (4) for limiting position; the lower blocking portion (22) protrudes from the seat body (2) towards the direction close to the upper layer electric bus (4) and abuts against the end of the lower layer electric bus (4) for limiting position.

10. The high-voltage busbar connection and fixing device according to claim 8, characterized in that: An operating hole (15) is provided on the sleeve frame (1), a top cover (16) is detachably mounted on the operating hole (15), and the operating hole (15) is aligned with the top of the arrangement bolt member (41).

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