A special wrench for dismounting bus plug-in box in narrow space

Abstract

The utility model discloses the bus slot technical field is related to, discloses a special wrench of bus plug -in box narrow space inside dismantling, the special wrench sets up in the flat state, and the special wrench includes handle and with the fixed connection of handle first clamping portion, second clamping portion, is equipped with first clamping groove in first clamping portion, and is equipped with second clamping groove in second clamping portion, and the opening of first clamping groove, second clamping groove all with the length direction of handle is preset angle, and the clamping size of first clamping groove is equal to the length of the longest diagonal edge of circumferential section, and the clamping size of second clamping groove is less than the length of the longest diagonal edge of circumferential section, and greater than the shortest perpendicular distance in two parallel edges of circumferential section. The utility model sets up first clamping groove, second clamping groove on the wrench in the flat state, makes the wrench can be inserted between bus slot and plug -in box and matches the different clamping surface of rotating shaft, and can complete multi -angle dismantling operation without replacing the tool.

Description

Technical Field

[0001] This utility model relates to the field of busbar trunking technology, specifically to a special wrench for disassembling busbar plug-in boxes in confined spaces. Background Technology

[0002] In the field of busbar trunking technology, plug-in boxes are connected to the busbar trunking via a rotating shaft (or "rotation joint"). The connection between the plug-in box and the rotating shaft is achieved through the box's snap-fit ​​mechanism and the rotating shaft. When the plug-in box needs to be removed from the busbar trunking, rotating the box drives the rotating shaft to detach from the trunking. However, in reality, the snap-fit ​​mechanism often comes loose or is damaged, causing the rotating shaft to stop rotating when the plug-in box is rotated, making it impossible to disassemble the plug-in box from the busbar trunking. Furthermore, because the outer wall of the rotating shaft is irregularly shaped circumferentially, existing wrenches cannot effectively engage with the outer wall for disassembly; the space between the plug-in box and the busbar trunking is extremely narrow, further increasing the difficulty of disassembling them. Utility Model Content

[0003] In view of the above problems, this utility model provides a special wrench for disassembling busbar plug-in boxes in confined spaces, which solves the problem that the existing technology cannot effectively disassemble busbar plug-in boxes.

[0004] According to one aspect of the present invention, a special wrench is provided for disassembling a busbar connector box in a confined space. The special wrench is used to disassemble the connector box connected to a rotating shaft, the rotating shaft being positioned between the connector box and the busbar trough, with both ends connected to the connector box and the busbar trough respectively. The circumferential cross-section of the outer side wall of the rotating shaft is an irregular pentagonal profile, the pentagonal profile forming at least two different engagement surfaces: a first engagement surface and a second engagement surface. The special wrench is flat and includes a handle, and a first engagement portion and a second engagement portion fixedly connected to the handle.

[0005] A first latching groove is provided in the first latching part, and a second latching groove is provided in the second latching part. The first latching groove is adapted to the first latching surface, and the second latching groove is adapted to the second latching surface. The opening orientations of the first latching groove and the second latching groove are both at a preset angle to the length direction of the handle.

[0006] Wherein, the snap-fit ​​dimension of the first snap-fit ​​groove is equal to the length of the longest diagonal side of the circumferential cross section, and the snap-fit ​​dimension of the second snap-fit ​​groove is less than the length of the longest diagonal side of the circumferential cross section, but greater than the shortest vertical distance between the two sets of parallel sides in the circumferential cross section.

[0007] In one alternative embodiment, the second latching slot includes a first latching segment and a second latching segment, wherein the latching size of the first latching segment is smaller than the latching size of the second latching segment, and the first latching segment is disposed near the opening of the second latching slot and near the bottom of the second latching slot.

[0008] The two side walls of the first snap-fit ​​segment are adapted to the two parallel sides with the longest vertical distance in the circumferential cross section, and the second snap-fit ​​segment is used to adapt to the two parallel sides with the shortest vertical distance in the circumferential cross section.

[0009] In one alternative embodiment, the snap-fit ​​dimension of the first snap-fit ​​segment is 41mm, the snap-fit ​​dimension of the second snap-fit ​​segment is 35mm, and the thickness of the special wrench is 2mm.

[0010] In one alternative embodiment, the handle includes a straight section and two transition sections, the two transition sections being connected to both ends of the straight section respectively, and the end of each transition section away from the straight section being connected to the first latching part / the second latching part, and the width of the transition section gradually increases from the end connected to the straight section to the end connected to the latching part.

[0011] In one alternative approach, the preset included angle is characterized by being in the range of 30° to 60°.

[0012] In one alternative, the special wrench is made of high-strength insulating plastic.

[0013] In one alternative embodiment, the outer layer of the special wrench is a high-strength insulating plastic layer, and a metal layer is embedded within the high-strength insulating plastic layer.

[0014] In one alternative embodiment, the sidewalls of the first and second snap-fit ​​slots are provided with multiple anti-slip protrusions.

[0015] This invention solves the problem of traditional disassembly tools being unable to operate in confined spaces due to their large size or complex structure by extending a flat wrench into the narrow gap between the busbar trunking and the junction box. Furthermore, by incorporating a first and second locking groove on the wrench, it can match different engagement surfaces of the rotating shaft, enabling multi-angle disassembly operations without tool changes, significantly improving disassembly efficiency. The handle features a straight section followed by a gradually widening transition section, ensuring both operational flexibility and enhanced torque transmission strength. This invention, through an integrated wrench with fixed multi-sized locking grooves, completely solves the technical challenge of junction boxes being unable to be disassembled due to damaged or missing box clips, and the inability of existing disassembly tools to be used in this application scenario. It provides an efficient and reliable specialized tool for power equipment maintenance.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 A perspective view of the special panel for disassembly within the confined space of the busbar plug-in box provided in this embodiment of the present invention is shown.

[0019] Figure 2 This invention provides a schematic diagram of the structure of a special wrench for disassembling a busbar connector box in a confined space, as shown in an embodiment of the present invention.

[0020] Figure 3 The installation diagram of the busbar trunking, plug-in box, and rotating shaft is shown.

[0021] Figure 4 The circumferential section of the rotating shaft is shown;

[0022] Figure 5 This diagram shows the first state of engagement between the first locking section of the special wrench and the second locking surface of the rotating shaft in an embodiment of the present invention.

[0023] Figure 6 This diagram shows a second state of engagement between the first locking section of the special wrench and the second locking surface of the rotating shaft in an embodiment of the present invention.

[0024] Figure 7 This diagram shows the engagement connection between the second locking section of the special wrench and the second locking surface of the rotating shaft in an embodiment of the present invention.

[0025] Figure 8 The diagram shows the engagement connection between the first locking groove of the special wrench and the first engaging surface of the rotating shaft in an embodiment of this utility model.

[0026] The reference numerals in the detailed embodiments are as follows:

[0027] 1. Handle; 11. Straight section; 12. Transition section;

[0028] 2. First card receiving part; 21. First card receiving slot;

[0029] 3. Second card connector; 31. Second card connector slot; 32. First card connector section; 33. Second card connector section.

[0030] 4. Busbar trunking; 6. Rotating shaft; 7. Plug-in box; 8. Adjacent connection space. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0032] Please see Figure 1 and Figure 2 , Figure 1 This illustration shows a perspective view of a special wrench embodiment for disassembling a busbar connector box 7 within a confined space. The special wrench is used to disassemble the connector box 7 connected to a rotating shaft 6. The rotating shaft 6 is positioned between the connector box 7 and the busbar groove 4, with both ends connected to the connector box 7 and the busbar groove 4, respectively. The circumferential cross-section of the outer wall of the rotating shaft 6 is an irregular pentagonal profile, forming at least two different engagement surfaces: a first engagement surface and a second engagement surface. The special wrench is flat and includes a handle 1 and a first engagement portion 2 fixedly connected to the handle 1. The second latching part 3; the first latching part 2 is provided with a first latching groove 21, and the second latching part 3 is provided with a second latching groove 31. The first latching groove 21 is adapted to the first latching surface, and the second latching groove 31 is adapted to the second latching surface; and the opening orientation of the first latching groove 21 and the second latching groove 31 is at a preset angle to the length direction of the handle 1; wherein, the latching dimension of the first latching groove 21 is equal to the length of the longest diagonal side of the circumferential section, and the latching dimension of the second latching groove 31 is less than the length of the longest diagonal side of the circumferential section, and greater than the shortest vertical distance between the two sets of parallel sides in the circumferential section.

[0033] Specifically, when the busbar trough 4 and the plug-in box 7 are relatively small, the rotating shaft 6 is close to the edge of the busbar trough 4 and the plug-in box 7. In this case, the wrench does not need to penetrate deep into the adjacent connecting space 8 of the busbar trough 4 and the plug-in box 7 to engage with the rotating shaft 6. When disassembling the rotating shaft 6, the wrench can rotate a large range of angles in a single turn. Figure 3 As shown, when the busbar 4 and the plug box 7 are large, the rotating shaft 6 is far from the edge of the busbar 4 and the plug box 7. At this time, the wrench needs to be inserted into the adjacent connection space 8 of the busbar 4 and the plug box 7. Due to the length limitation of the wrench and the fact that the busbar 4 and the plug box 7 hinder the rotation of the wrench to a certain extent, the range of the single rotation angle of the wrench will be small.

[0034] like Figure 4As shown, the circumferential section of the outer wall of the rotating shaft 6 has two sets of parallel sides. The longest diagonal L is the maximum length of the line connecting any two non-adjacent vertices in the pentagonal circumferential section. When the rotating shaft 6 is in a state where the second locking groove 31 cannot lock and fix the rotating shaft 6, the rotating shaft 6 is in a state where the first engaging surface faces the edge of the adjacent connecting space 8, as shown. Figure 8 As shown, the first locking part 2 of the wrench extends into the adjacent connecting space 8 of the busbar groove 4 and the plug box 7, so that the first locking groove 21 and the first engagement surface of the rotating shaft 6 are engaged. The two endpoints of the longest diagonal line abut against the two parallel side walls of the first locking groove 21 to fix the connection between the wrench and the rotating shaft 6. Rotating the special wrench causes the rotating shaft 6 to rotate. After rotating to a preset angle, the connection between the wrench and the first engagement surface of the rotating shaft 6 is released, and the second engagement surface of the rotating shaft 6 faces the edge. At this time, the second locking part 3 of the conversion wrench extends into the gap, so that the second locking groove 31 and the second engagement surface are engaged. The rotation of the wrench drives the rotating shaft 6 to rotate, and this process is repeated until the disassembly of the plug box 7 is completed.

[0035] like Figure 5 , Figure 6 and Figure 7 As shown, when the second engagement surface of the rotating shaft 6 faces the edge of the adjacent connecting space 8, the second engagement part 3 of the special wrench extends into the adjacent connecting space 8. The second engagement groove 31 and the second engagement surface of the rotating shaft 6 cooperate to fix the connection between the wrench and the rotating shaft 6. The rotating wrench drives the rotating shaft 6 to rotate. After the wrench rotates to a certain angle, the engagement end of the wrench is selected according to the engagement surface of the rotating shaft 6 facing the edge of the adjacent connecting space 8.

[0036] Furthermore, such as Figure 2 As shown, the second snap-fit ​​groove 31 includes a first snap-fit ​​section 32 and a second snap-fit ​​section 33. The snap-fit ​​size of the first snap-fit ​​section 32 is smaller than that of the second snap-fit ​​section 33. The first snap-fit ​​section 32 is located near the opening of the second snap-fit ​​groove 31 and near the bottom of the groove. The two side walls of the first snap-fit ​​section 32 are adapted to the two parallel sides with the longest vertical distance in the circumferential cross-section. The second snap-fit ​​section 33 is used to adapt to the two parallel sides with the shortest vertical distance in the circumferential cross-section.

[0037] Specifically, because there is a certain distance between the rotating shaft 6 and the edge of the adjacent connecting space 8, the wrench needs to go deep into the adjacent connecting space 8. At this time, the plug box 7 and the busbar trough 4 will hinder the single rotation angle of the wrench, making the single rotation range of the wrench smaller. The rotation range of the rotating shaft 6 each time is smaller, and the number of rotations required to disassemble the rotating shaft 6 is more.

[0038] The second locking groove 31 of the wrench includes a first locking section 32 and a second locking section 33. The distance between the two parallel sidewalls of the first locking section 32 is equal to the longest vertical distance between the two sets of parallel sides in the circumferential section. The distance between the two parallel sidewalls of the second locking section 33 is equal to the shortest vertical distance between the two sets of parallel sides in the circumferential section.

[0039] like Figure 4 As shown, the sides of the rotation axis 6 are: a1 and a2 are parallel, b1 and b2 are parallel, the length of a1 is greater than the length of b1, the longest diagonal side is L, the longest perpendicular distance between the two sets of parallel sides in the circumferential section is a1, and the shortest perpendicular distance is b1, as shown in 5 and Figure 6 As shown, the first engaging segment 32 is used to engage the engaging surface formed by the sequential connection of b2, a1, and b1 of the rotating shaft 6, as well as the engaging surface formed by the sequential connection of b2, c, a2, and b1, as shown. Figure 7 As shown, the second snap-fit ​​section 33 is used to snap the engagement surface formed by the sequential connection of a1, b2, c, and a2 of the rotating shaft 6, as well as the engagement surface formed by the sequential connection of a1, b1, and a2.

[0040] Existing wrenches connect to different sized engagement mechanisms via an adjustable mechanism, but this approach is unsuitable for this application. By incorporating two connecting slots of varying widths in the second engagement portion 3, and by engaging and fixing one end of the wrench with engagement surfaces of different sized rotating shafts 6, the wrench can be used to engage and disassemble irregularly sized rotating shafts 6 within confined spaces. This solves the problem of existing disassembly tools being unable to access the confined space, simplifies the disassembly process in such spaces, and eliminates the need for different sized tools when disassembling irregularly sized rotating shafts 6 in confined areas. Furthermore, due to the limited disassembly space, existing wrenches are unsuitable for this specific application scenario.

[0041] Preferably, the snap-fit ​​size of the first snap-fit ​​section 32 is 41mm, the snap-fit ​​size of the second snap-fit ​​section 33 is 35mm, the distance between the two parallel sidewalls of the first snap-fit ​​groove 21 is 54mm, and the thickness of the special wrench is 2mm, ensuring that the wrench can be inserted into the adjacent connection space 8 of the busbar trough 4 and the plug-in box 7.

[0042] Furthermore, such as Figure 2As shown, the handle 1 includes a straight section 11 and two transition sections 12. The two transition sections 12 are connected to both ends of the straight section 11, and the end of each transition section 12 away from the straight section 11 is connected to the first locking part 2 / second locking part 3. The width of the transition section 12 gradually increases from the end connected to the straight section 11 to the end connected to the locking part. In this embodiment, the handle 1 ensures the length of the special wrench through the straight section 11, while keeping the straight section 11 slim to facilitate lateral movement in the narrow space inside the housing. The transition section 12 widens the connection position between the handle 1 and the first locking part 2 and the second locking part 3, ensuring that the first locking part 2 and the second locking part 3 have sufficient strength when engaged and rotating with the rotating shaft 6, without occupying extra space.

[0043] The openings of the first locking groove 21 and the second locking groove 31 are both at a preset angle to the length direction of the handle 1. Furthermore, the preset angle ranges from 30° to 60°. This preset angle between the openings of the locking grooves and the length direction of the handle 1 allows the rotating shaft 6 to easily engage with the locking groove when the locking grooves and the engaging surfaces of the rotating shaft 6 are in contact. Simultaneously, the preset angle between the openings of the first locking groove 21 and the second locking groove 31 and the length direction of the handle 1 saves time and effort for the operator when turning the wrench.

[0044] In one implementation, the special wrench is made of high-strength insulating plastic. In environments with electricity or high electromagnetic interference, such as data centers and power distribution cabinets, the use of a special wrench made of high-strength insulating plastic for disassembly avoids the risk of short circuits or electric arcs that traditional metal wrenches pose in the maintenance of power equipment.

[0045] In another implementation, the special wrench includes an outer layer and an inner layer. The outer layer is a high-strength insulating plastic layer, and a metal layer is embedded in the high-strength insulating plastic layer. Through the composite structure of plastic and metal, the mechanical strength of the special wrench is significantly improved while retaining its insulation safety, thus preventing the professional wrench from breaking during use.

[0046] Furthermore, the metal layer has several micropores that connect the two sides of the wrench. When the high-strength insulating plastic layer is prepared by injection molding, the metal layer is placed in the mold, and the molten plastic passes through the micropores, enhancing the connection strength between the high-strength insulating plastic layer and the metal layer, thereby further improving the mechanical strength of the wrench.

[0047] Furthermore, the sidewalls of the first locking groove 21 and the second locking groove 31 are provided with multiple anti-slip protrusions to enhance the friction between the high-strength insulating plastic and the rotating shaft 6, ensuring that the rotating shaft 6 can be driven to rotate when the wrench is turned.

[0048] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0049] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0050] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0051] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0052] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A special wrench for disassembling busbar junction boxes in confined spaces, characterized in that, The special wrench is used to disassemble and rotate the plug box connected to the rotating shaft. The rotating shaft is located between the plug box and the busbar trunking, and its two ends are respectively connected to the plug box and the busbar trunking. The circumferential cross-section of the outer wall of the rotating shaft is an irregular pentagonal profile, and the pentagonal profile forms at least two different engagement surfaces: a first engagement surface and a second engagement surface. The special wrench is flat and includes a handle, as well as a first engagement part and a second engagement part fixedly connected to the handle. A first latching groove is provided in the first latching part, and a second latching groove is provided in the second latching part. The first latching groove is adapted to the first latching surface, and the second latching groove is adapted to the second latching surface. The opening orientations of the first latching groove and the second latching groove are both at a preset angle to the length direction of the handle. Wherein, the snap-fit ​​dimension of the first snap-fit ​​groove is equal to the length of the longest diagonal side of the circumferential cross section, and the snap-fit ​​dimension of the second snap-fit ​​groove is less than the length of the longest diagonal side of the circumferential cross section, and greater than the shortest perpendicular distance between the two sets of parallel sides in the circumferential cross section.

2. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 1, characterized in that, The second snap-fit ​​slot includes a first snap-fit ​​section and a second snap-fit ​​section. The snap-fit ​​size of the first snap-fit ​​section is smaller than that of the second snap-fit ​​section. The first snap-fit ​​section is located near the opening of the second snap-fit ​​slot and near the bottom of the second snap-fit ​​slot. The two side walls of the first snap-fit ​​segment are adapted to the two parallel sides with the longest vertical distance in the circumferential cross section, and the second snap-fit ​​segment is used to adapt to the two parallel sides with the shortest vertical distance in the circumferential cross section.

3. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 2, characterized in that, The first snap-fit ​​section has a snap-fit ​​size of 41mm, the second snap-fit ​​section has a snap-fit ​​size of 35mm, and the special wrench has a thickness of 2mm.

4. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 1 or 2, characterized in that, The handle includes a straight section and two transition sections. The two transition sections are respectively connected to both ends of the straight section. The end of each transition section away from the straight section is connected to the first latching part / the second latching part. The width of the transition section gradually increases from the end connected to the straight section to the end connected to the latching part.

5. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 1, characterized in that, The preset included angle ranges from 30° to 60°.

6. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 1, characterized in that, The special wrench is made of high-strength insulating plastic.

7. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 1, characterized in that, The outer layer of the special wrench is a high-strength insulating plastic layer, and a metal layer is embedded in the high-strength insulating plastic layer.

8. The special wrench for disassembling busbar junction boxes in confined spaces according to claim 1, characterized in that, The sidewalls of the first and second snap-fit ​​slots are provided with multiple anti-slip protrusions.

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