A busbar frame

Abstract

This application relates to the technical field of electrical components and discloses a busbar frame comprising two opposing positioning frames and at least one set of connecting components for connecting the two positioning frames. The two positioning frames are each detachably provided with a plurality of opposing sheaths on their facing sides. A positioning space for locating a wire busbar is formed between any two opposing sheaths. The sides of the sheaths facing the positioning space are provided with a plurality of clamping plate slots for the ends of the wire busbar to extend into. This application has strong modularity and is suitable for clamping wire busbars of various sizes.

Description

Technical Field

[0001] The present application relates to the technical field of electrical components, and in particular to a busbar frame. Background Art

[0002] Busbar frames are electrical components used to fix and support current-carrying wires and are widely used in power distribution equipment.

[0003] In the related art, a Chinese patent with publication number CN204167690U discloses a busbar frame, which includes a left frame and a right frame made of unsaturated polyester bulk molding compound (DMC). The inward-facing sides of the left frame and the right frame are each provided with a number of splint grooves at intervals. When in use, the busbar is clamped and positioned between the splint grooves of the left frame and the right frame.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the following defects exist: the clamping slots in the above-mentioned busbar frame are directly opened on the left frame and the right frame, the busbar frame has poor combination properties, and it can only be used to clamp wire rows of constant size, which needs to be improved. Summary of the Invention

[0005] In order to enhance the combinability of the busbar frame so as to adapt to clamping wire bars of various sizes, the present application provides a busbar frame.

[0006] The busbar frame provided in this application adopts the following technical solution:

[0007] A busbar frame comprises two oppositely arranged positioning frames and at least one set of connecting components for connecting the two positioning frames. The two positioning frames are respectively provided with a plurality of oppositely arranged sheaths on their facing sides, and a positioning space for positioning a wire row is formed between any two oppositely arranged sheaths. The side of the sheath facing the positioning space is provided with a plurality of splint grooves for the ends of the wire row to extend into.

[0008] By adopting this technical solution, the clamping plate slots are provided on the sheath rather than the positioning frame, and the sheath is removably mounted on the positioning frame. Before positioning the busbar, the operator can assemble sheaths of different sizes onto the positioning frame, thereby varying the spacing between the two opposing sheaths to accommodate busbars of varying lengths. Alternatively, the operator can assemble sheaths with varying numbers of clamping plate slots onto the positioning frame to accommodate the positioning of busbars of varying numbers. This structure allows for a variety of busbar frame combinations, enhancing the busbar frame's modularity and practicality, allowing it to accommodate the clamping and positioning of busbars of varying sizes.

[0009] Optionally, the positioning frame is a metal frame, the protective sleeve is a plastic sleeve capable of generating elastic deformation, and the protective sleeve and the positioning frame are connected in an interference fit manner.

[0010] By adopting this technical solution, the positioning frame is made of metal and the sheath is made of plastic. This not only enhances the structural strength of the busbar frame, but also helps to dissipate the heat generated by the busbar during operation, providing a certain degree of eddy current prevention. The sheath and positioning frame have an interference fit, resulting in a simple structure and easy assembly and disassembly.

[0011] Optionally, a side surface of the sheath close to the adjacent positioning frame is provided with a clearance groove, a mounting block is integrally formed on the groove wall of the clearance groove, and a mounting groove for the mounting block to be inserted into is provided on the positioning frame.

[0012] By adopting the above technical solution, when the sleeve is assembled on the positioning frame, the mounting block is clamped in the mounting groove. At this time, the opposite side groove walls of the positioning groove are arranged on both sides of the positioning frame, which plays a role in preventing the sleeve from moving along the width direction of the positioning frame.

[0013] Optionally, several groups of limiting members are provided in the installation groove for preventing the sleeve from sliding along the length direction of the positioning frame. Each group of limiting members includes two limiting plates distributed along the length direction of the positioning frame. A limiting groove is formed between the two limiting plates in the same group of limiting members and the positioning frame, and the installation block is embedded in the limiting groove.

[0014] By adopting the above technical solution, when the mounting block is embedded in the limiting groove, the two limiting plates in the same group of limiting parts respectively abut against the two sides of the mounting block, thereby hindering the movement of the sleeve along the length direction of the positioning frame, and helping to improve the connection strength between the sleeve and the positioning frame.

[0015] Optionally, a pad made of plastic material is detachably provided on one side of the sheath facing the positioning space, and a fixing groove for the end of the wire row to extend into is provided on the end face of the pad away from the sheath.

[0016] By adopting this technical solution, when a busbar frame is required to hold wires of varying lengths, spacers of varying thicknesses can be assembled on the corresponding sheaths, reducing the spacing in the space actually used to position the wires. This allows the wires to be positioned between two opposing spacers, further enhancing the busbar frame's modularity and practicality. Furthermore, the spacers are made of plastic, offering advantages such as reduced weight and lower cost compared to the traditional method of adding copper spacers.

[0017] Optionally, a fixing block that is interference-fitted with the splint groove is integrally formed on a side of the cushion block facing the adjacent sheath.

[0018] By adopting the above technical solution, the pad and the sheath are connected by the interference fit between the clamping block and the splint groove, which has a simple structure and is easy to assemble and disassemble. In addition, the above connection method does not require additional structures on the sheath, which helps to simplify the production process of the sheath.

[0019] Optionally, a guide block is integrally formed on the side wall of the fixing block, and a guide groove that slidably cooperates with the guide block is formed on the groove wall of the splint groove.

[0020] By adopting the above technical solution, when the fixing block is embedded in the splint groove, the guide block will slide along the guide groove. On the one hand, it plays a guiding role when the fixing block moves. On the other hand, it can also hinder the horizontal movement of the inserted fixing block relative to the sleeve, which helps to improve the connection strength between the pad and the sleeve.

[0021] Optionally, the connecting assembly includes a connecting rod synchronously inserted into the two positioning frames and fastening studs respectively fixed to both ends of the connecting rod, and a fastening nut is threadedly connected to the fastening stud.

[0022] By adopting this technical solution, when connecting two positioning frames, the fastening studs at each end of the connecting rod can be first passed through different positioning frames, and then the fastening nuts are threaded onto the fastening studs to prevent the fastening studs from being dislodged from the positioning frames. In addition to being easy to operate and providing high connection stability, this structure also allows the spacing between the two positioning frames to be fine-tuned by changing the threaded position of the fastening nuts, thereby expanding the range of busbar lengths that can be positioned by the busbar frame, providing great flexibility.

[0023] Optionally, several groups of stoppers are arranged on the groove wall of the installation groove at intervals along the length direction of the positioning frame, each group of the stoppers includes a plurality of stop blocks distributed along the length direction of the positioning frame, and the limit plate is provided with a stop groove that is interference fit with one of the stop blocks.

[0024] By adopting the above technical solution, the limiting plate and the positioning frame are detachable, so that the distance between the two limiting plates in the same group of limiting parts can be adjusted, so that the limiting parts can adapt to positioning installation blocks of different widths, further improving the flexible adaptability of the busbar frame.

[0025] Optionally, a guide slope is provided at one end of the limit plate away from the stop block, a pressing plate is integrally formed on the sleeve, and a pressing slope is provided at one end of the pressure plate close to the limit plate and parallel to the guide slope; when the mounting block is embedded in the limit groove, the pressing slope abuts against the guide slope.

[0026] By adopting the above technical solution, when the limit plate is interference fit with one of the stop blocks, after the mounting block is inserted into the limit groove, the pressing inclined surface on the pressing plate will abut against the guide inclined surface on the limit plate, so that the pressing plate presses against the limit plate, thereby preventing the limit plate from detaching from the stop block, which helps to improve the stability of the limit plate.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The splint slot is provided on the sheath that is detachably connected to the positioning frame. When in use, sheaths of different sizes or shapes can be assembled to adapt to the positioning of wire bars of different sizes. The busbar frame has strong modularity and practicality.

[0029] 2. When positioning shorter cable bars, plastic spacers can be installed on the sheath to reduce the spacing between cable bars in the positioning space. Compared with the traditional method of adding copper sheets, it has the advantages of light weight, low cost, and strong combination.

[0030] 3. The limit plate can be detachably mounted on the positioning frame, so that the distance between the two limit plates in the same group can be adjusted to accommodate the positioning of sheaths of different widths; and when the mounting block is embedded in the limit groove, the pressing piece will press against the limit plate to prevent the limit plate from separating from the stop block. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of Example 1 when the pad is not assembled.

[0032] Figure 2 It is a partial cross-sectional schematic diagram of Example 1, mainly showing the connection structure between the sheath and the positioning frame.

[0033] Figure 3 It is a schematic structural diagram of a group of relative sheaths in Example 1 when a spacer is assembled on them.

[0034] Figure 4 It is a partial explosion diagram of Example 1 when it is equipped with a pad.

[0035] Figure 5 It is a partial cross-sectional schematic diagram of Example 2.

[0036] Description of reference numerals:

[0037] 1. Positioning frame; 11. Mounting slot; 2. Connecting assembly; 21. Connecting rod; 22. Fastening stud; 23. Fastening nut; 24. Spring washer; 3. Sheath; 31. Clamping plate slot; 311. Guide slot; 32. Giving way slot; 33. Mounting block; 34. Positioning slot; 35. Pressing piece; 351. Pressing inclined surface; 4. Positioning space; 5. Limiting plate; 51. Limiting slot; 52. Stopping slot; 53. Guide inclined surface; 6. Pad; 61. Fixing block; 62. Fixing slot; 63. Guide block; 64. Positioning column; 7. Reinforcement rib; 8. Stopper; 81. Stop block. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] An embodiment of the present application discloses a busbar frame.

[0040] Example 1

[0041] Reference Figure 1 The busbar frame includes two relatively arranged positioning frames 1 and at least one group of connecting components 2 for connecting the two positioning frames 1. In this embodiment, four groups of connecting components 2 are provided to illustrate its structure, and the four groups of connecting components 2 are equidistantly distributed along the length direction of the positioning frame 1.

[0042] Reference Figure 1 Each set of connecting components 2 includes a connecting rod 21 that is synchronously inserted into the two positioning frames 1 and fastening studs 22 that are fixed at both ends of the connecting rod 21. The positioning frame 1 is provided with a through hole for the fastening studs 22 to pass through, and each fastening stud 22 is threadedly connected to a fastening nut 23. In order to control the length of the fastening studs 22 passing through the positioning frame 1, in this embodiment, the diameter of the fastening studs 22 is set to be smaller than the diameter of the connecting rod 21, so that a transition step is formed between the connecting rod 21 and the fastening studs 22. The transition step can prevent the connecting rod 21 from passing through the positioning frame 1 along the insertion direction of the fastening studs 22. When connecting the two positioning frames 1, the connecting rod 21 can be placed between the two positioning frames 1 first, and then the fastening studs 22 can be passed through the positioning frame 1 from the inside to the outside until the above-mentioned transition step abuts the positioning frame 1. Finally, the fastening nuts 23 are screwed onto the fastening studs 22 to prevent the fastening studs 22 from separating from the positioning frame 1.

[0043] Reference Figure 1 In order to disperse the pressure on the positioning frame 1 when the fastening nut 23 is tightened, a spring washer 24 is provided between the fastening nut 23 and the positioning frame 1 and is sleeved outside the fastening stud 22. In other embodiments, the above-mentioned spring washer 24 can also be set as a flat washer.

[0044] Reference Figure 1 , a plurality of sheaths 3 are detachably provided on the opposite sides of the two positioning frames 1, and the sheaths 3 provided on different positioning frames 1 are arranged opposite to each other in pairs, and a positioning space 4 for positioning the wire row is formed between any two oppositely arranged sheaths 3. Each sheath 3 is provided with a plurality of splint grooves 31 on the side facing the positioning space 4 for the end of the wire row to extend into. The number of splint grooves 31 on the same sheath 3 can be 1-4, corresponding to single-row, double-row, triple-row or quad-row wire rows respectively. In this embodiment, two splint grooves 31 are used to illustrate its structure. The distance between two adjacent sheaths 3 connected on the same positioning frame 1 is 80-180mm. When the wire row is positioned on the busbar frame, one end of the wire row is located in the splint groove 31 of the sheath 3 on one of the positioning frames 1, and the other end is located in the splint groove 31 of the sheath 3 on the other positioning frame 1.

[0045] Reference Figure 1To improve the structural strength and heat dissipation of the busbar frame, the positioning frame 1 in this embodiment is made of metal, preferably 304 stainless steel. The sheath 3 is integrally injection-molded from plastic, which can be any material capable of slight elastic deformation, such as PE.

[0046] Reference Figure 1 、 Figure 2 The sleeve 3 and the positioning frame 1 are detachably connected by an interference fit. The specific structure of the interference fit is as follows: a clearance groove 32 is provided on the side of the sleeve 3 close to the adjacent positioning frame 1. The clearance groove 32 is located in the middle of the sleeve 3, and a mounting block 33 with the same width as the sleeve 3 is integrally formed on the groove wall of the clearance groove 32. A mounting gap is formed between the mounting block 33 and the groove walls on both sides of the clearance groove 32. The two positioning frames 1 are provided with mounting grooves 11 on the sides close to each other for the adjacent mounting blocks 33 to be inserted into. The mounting grooves 11 extend along the length direction of the positioning frame 1, and the mounting grooves 11 are provided with openings on both sides along the length direction of the positioning frame 1. The groove wall thickness of the mounting groove 11 is less than the width of the installation gap, so that when the mounting block 33 is inserted into the mounting groove 11, the groove wall of the mounting groove 11 can be just inserted into the installation gap to prevent the sleeve 3 from moving along the width direction of the positioning frame 1.

[0047] Reference Figure 1 、 Figure 2 To enhance the stability of the connection between the sheath 3 and the positioning frame 1, a number of limiting members equal to the number of sheaths 3 are provided in the mounting groove 11 to prevent the sheath 3 from sliding along the length of the positioning frame 1. Each set of limiting members includes two limiting plates 5 distributed along the length of the positioning frame 1. The limiting plates 5 are integrally formed on the bottom wall of the mounting groove 11. The two limiting plates 5 in the same set of limiting members form a limiting groove 51 between them and the positioning frame 1. The mounting block 33 is embedded in the limiting groove 51 and is restrained by the limiting plates 5, ensuring high stability when the sheath 3 is assembled to the positioning frame 1.

[0048] Reference Figure 3 、 Figure 4 A removable spacer 6 is installed on the side of the sheath 3 facing the positioning space 4. The spacer 6 is made of the same material as the sheath 3 and is injection molded. The side of the spacer 6 facing the adjacent sheath 3 is integrally molded with a number of retaining blocks 61, equal to the number of clamping plate slots 31. These retaining blocks 61 are hollow, saving material and facilitating deformation. When assembling the spacer 6, simply insert the retaining blocks 61 into the corresponding clamping plate slots 31, thus connecting the spacer 6 to the sheath 3. This results in a simple structure and easy operation.

[0049] Reference Figure 3 、 Figure 4The end surface of the spacer 6, away from the fixing block 61, is provided with a plurality of fixing grooves 62, into which the ends of the cable busbars can be inserted. When a shorter cable busbar needs to be positioned, the spacer 6 can be assembled on the sheath 3 to reduce the spacing in the positioning space 4 for positioning the cable busbars, allowing the ends of the cable busbars to be snapped into the fixing grooves 62, thereby improving the adaptability of the busbar frame assembly.

[0050] Reference Figure 3 、 Figure 4 In order to enhance the stability of the pad 6 when it is connected to the sheath 3, guide blocks 63 are integrally formed on the two opposite side walls of each fixing block 61, and guide grooves 311 that slide with the guide blocks 63 are opened on the two opposite side groove walls of each splint groove 31 to prevent the fixing block 61 from moving horizontally relative to the sheath 3 when it is embedded in the splint groove 31.

[0051] Reference Figure 3 、 Figure 4 To increase the connection area between the pad 6 and the sheath 3, positioning posts 64 are integrally formed at the four corners of the end face of the pad 6 near the adjacent sheath 3. The end face of the sheath 3 near the pad 6 is provided with a positioning groove 34 that plugs into the positioning posts 64. To enhance the structural strength of the pad 6 and the sheath 3, reinforcing ribs 7 are integrally formed on the side edges of the pad 6 and the sheath 3.

[0052] The implementation principle of a busbar frame in an embodiment of the present application is as follows: when assembling the busbar frame, the mounting block 33 can be first inserted into the limiting groove 51 to assemble the sheath 3 on the positioning frame 1; then the connecting rod 21 is extended between the two positioning frames 1, and the fastening studs 22 are respectively passed through the two positioning frames 1; then the wire row is clamped between the two oppositely arranged clamping plate grooves 31, and finally the fastening nut 23 is rotated to clamp the wire row in the positioning space 4. The operator can adjust the spacing of the positioning space 4 by assembling sheaths 3 of different thicknesses or with different numbers of clamping plate grooves 31, or by adding spacers 6 of different thicknesses to the sheath 3 to adapt to the positioning of wire rows of different sizes. The busbar frame has strong modularity and practicality.

[0053] Example 2

[0054] Reference Figure 5 This embodiment differs from Embodiment 1 in that several groups of stoppers 8 are spaced apart along the length of the positioning frame 1 within the mounting groove 11. In this embodiment, the number of stoppers 8 provided on a given positioning frame 1 is the same as the number of limiting plates 5. Each group of stoppers 8 includes a plurality of stop blocks 81 equidistantly spaced along the length of the positioning frame 1. The stop blocks 81 are integrally formed on the bottom wall of the mounting groove 11. The limiting plates 5 are provided with stop grooves 52 on the side of the bottom wall of the mounting groove 11 that provide an interference fit with the stop blocks 81. During use, the operator can connect the limiting plates 5 to different stop blocks 81 within the same group of stoppers 8 to change the spacing between the two limiting plates 5 within the same group, thereby accommodating the positioning of sheaths 3 of varying widths.

[0055] Reference Figure 5 The end of the limiting plate 5 away from the stop block 81 is provided with a guide slope 53, which is located at the end of the limiting plate 5 near the limiting groove 51. A pressing piece 35 is integrally formed on the two opposing side walls of the sheath 3. The end of the pressing piece 35 near the limiting plate 5 is provided with a pressing slope 351 parallel to the guide slope 53. When the mounting block 33 is inserted into the limiting groove 51, the pressing slope 351 abuts against the guide slope 53, preventing the limiting plate 5 from separating from the stop block 81.

[0056] The busbar frame of this embodiment utilizes the following principles: The limiting plates 5 are detachably mounted on the positioning frame 1, allowing for adjustable spacing between two limiting plates 5 in the same limiting assembly to accommodate various sheath widths. This provides for enhanced modularity. Furthermore, when the mounting block 33 engages the limiting groove 51, the pressing piece 35 abuts against the limiting plates 5, enhancing the stability of the limiting plates 5 and the integrity of the busbar frame.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A busbar frame comprising two positioning frames (1) arranged opposite to each other and at least one set of connecting components (2) for connecting the two positioning frames (1), characterized in that: The two positioning frames (1) are provided with a plurality of relatively arranged sheaths (3) on the opposite sides thereof, and a positioning space (4) for positioning the wire row is formed between any two relatively arranged sheaths (3). The sheaths (3) are provided with a plurality of splint grooves (31) on the side facing the positioning space (4) for the ends of the wire row to extend into; the sheaths (3) are provided with a clearance groove (32) on the side close to the adjacent positioning frame (1), and a mounting block (33) is integrally formed on the groove wall of the clearance groove (32); the positioning frame (1) is provided with a mounting groove (11) for the mounting block (33) to be snapped into; the mounting groove (11) is provided with a plurality of groups of limiting members for preventing the sheaths (3) from sliding along the length direction of the positioning frame (1), and each group of the limiting members includes two limiting plates (5) distributed along the length direction of the positioning frame (1), and the two limiting plates (5) in the same group of limiting members are aligned with the positioning frame (1). A limiting groove (51) is formed between the positioning frame (1), and the mounting block (33) is embedded in the limiting groove (51); a plurality of groups of stoppers (8) are arranged at intervals on the groove wall of the mounting groove (11) along the length direction of the positioning frame (1), and each group of the stoppers (8) includes a plurality of stoppers (81) distributed along the length direction of the positioning frame (1), and the limiting plate (5) is provided with an interference fit with one of the stoppers (81). A stop groove (52); a guide slope (53) is provided at one end of the limit plate (5) away from the stop block (81); a pressing piece (35) is integrally formed on the sheath (3); and a pressing slope (351) is provided at one end of the pressing piece (35) close to the limit plate (5) and parallel to the guide slope (53); when the mounting block (33) is embedded in the limit groove (51), the pressing slope (351) contacts the guide slope (53).

2. A busbar frame according to claim 1, characterized in that: The positioning frame (1) is a metal frame, the protective sleeve (3) is a plastic sleeve capable of generating elastic deformation, and the protective sleeve (3) and the positioning frame (1) are connected in an interference fit manner.

3. The busbar frame according to claim 1, characterized in that: A plastic pad (6) is detachably provided on one side of the sheath (3) facing the positioning space (4), and a fixing groove (62) for the end of the wire row to extend into is provided on the end face of the pad (6) away from the sheath (3).

4. A busbar frame according to claim 3, characterized in that: A clamping block (61) that is interference-fitted with the splint groove (31) is integrally formed on the side of the cushion block (6) facing the adjacent sheath (3).

5. A busbar frame according to claim 4, characterized in that: A guide block (63) is integrally formed on the side wall of the clamping block (61), and a guide groove (311) is provided on the groove wall of the clamping plate groove (31) for slidingly matching with the guide block (63).

6. The busbar frame according to claim 1, characterized in that: The connecting assembly (2) comprises a connecting rod (21) synchronously inserted into two positioning frames (1) and fastening studs (22) respectively fixed at both ends of the connecting rod (21), wherein a fastening nut (23) is threadedly connected to the fastening studs (22).

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