A copper bar positioning tool

Abstract

The utility model relates to tooling technical field discloses a copper bar positioning tool for realizing the positioning of copper bar on relay, and the copper bar positioning tool includes: the body, first positioning slot is established on the body, and forms the joint cooperation with copper bar, and first positioning slot has at least three different first limit surfaces, and when first positioning slot is jointed with copper bar, three first limit surfaces respectively abut with copper bar outer wall, second positioning slot is established on the body, and forms the joint cooperation with relay, and second positioning slot has at least four different second limit surfaces, and when second positioning slot is jointed with relay, four second limit surfaces respectively abut with relay outer wall, when first positioning slot and copper bar joint, and second positioning slot is jointed with relay, can make copper bar and relay keep relative fixation. The utility model has the beneficial effect that can realize the rigid location of multiple points and multiple degrees of freedom to copper bar and relay respectively.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, and in particular to a copper busbar positioning tooling. Background Technology

[0002] To achieve reliable connection between relays and other electrical components, existing technologies typically employ detachable copper busbars for conductive connections. These busbars and the relay body each have corresponding mounting holes, and mechanical and electrical connections are achieved through screw tightening. During actual installation, the operator must hold the copper busbar in one hand, aligning it with the designated position on the relay and ensuring the mounting holes are aligned, while using the other hand to screw in and tighten the screws. However, due to the lack of an effective position-limiting structure during initial positioning, the copper busbar is prone to relative slippage or deflection during the gradual tightening of the screws, influenced by thread engagement forces and external operating forces. This causes the final installation position to deviate from the intended location. This deviation not only affects the reliability of the electrical connection but also frequently necessitates repeated disassembly and realignment, significantly reducing assembly efficiency and increasing labor costs. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a copper busbar positioning fixture that can achieve multi-point, multi-degree-of-freedom rigid limiting of copper busbars and relays respectively.

[0004] The technical solution adopted by this utility model to solve its technical problem is to provide a copper busbar positioning fixture for positioning a copper busbar on a relay. The copper busbar positioning fixture includes:

[0005] ontology;

[0006] The first positioning groove is provided on the body and forms a snap-fit ​​with the copper busbar. The first positioning groove has at least three first limiting surfaces facing different directions. When the first positioning groove is snap-fitted with the copper busbar, the three first limiting surfaces abut against the outer wall of the copper busbar respectively.

[0007] The second positioning groove is provided on the body and forms a snap-fit ​​with the relay. The second positioning groove has at least four second limiting surfaces facing different directions. When the second positioning groove is snap-fitted with the relay, the four second limiting surfaces abut against the outer wall of the relay respectively.

[0008] When the first positioning slot and the copper busbar are engaged, and the second positioning slot is engaged with the relay, the copper busbar and the relay can be kept relatively fixed.

[0009] In the aforementioned copper busbar positioning fixture, three first limiting surfaces are connected in sequence and arranged in a U-shape. Of the four second limiting surfaces, two second limiting surfaces are arranged opposite each other, and the other two second limiting surfaces are connected perpendicularly to each other and located between the two oppositely arranged second limiting surfaces.

[0010] In the aforementioned copper busbar positioning fixture, the width of the first positioning groove is adapted to the width of the copper busbar, the width of the second positioning groove is adapted to the width of the relay, and the first positioning groove and the second positioning groove are at different horizontal heights and are interconnected.

[0011] In the aforementioned copper busbar positioning fixture, the first positioning groove is located on the side of the second positioning groove away from the relay, and the projections of the center lines of the first positioning groove and the second positioning groove in the vertical direction coincide.

[0012] In the aforementioned copper busbar positioning fixture, the main body is provided with a positioning hole, which passes through the first positioning groove and the second positioning groove in sequence along the vertical direction, and the inner diameter of the positioning hole is greater than or equal to the outer diameter of the fastener head.

[0013] In the aforementioned copper busbar positioning fixture, the main body is provided with a third positioning groove arranged along its own length direction. The third positioning groove is recessed inward from the outer surface of the main body and communicates with the first positioning groove.

[0014] In the aforementioned copper busbar positioning fixture, a clearance groove is provided on the side of the main body away from the third positioning groove. The clearance groove is recessed inward from the outer surface of the main body and forms a concave-convex fit with the relay.

[0015] In the aforementioned copper busbar positioning fixture, multiple sets of the first positioning groove, the second positioning groove, the positioning hole, the third positioning groove, and the clearance groove are provided, and they are arranged equidistantly along the length direction of the body.

[0016] In the aforementioned copper busbar positioning fixture, the main body is made of insulating resin material.

[0017] In the aforementioned copper busbar positioning fixture, there is a color difference between the body and the copper busbar and / or the relay.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. In this utility model, by setting a first positioning groove with at least three first limiting surfaces facing different directions and a second positioning groove with at least four second limiting surfaces facing different directions, multi-point, multi-degree-of-freedom rigid limiting is achieved for the copper busbar and the relay respectively. This not only effectively solves the problem of copper busbar displacement and misalignment caused by screw tightening force during traditional manual installation, significantly improving positioning accuracy and assembly reliability, but also disperses the pressure and stress during the tightening process through multi-point contact, avoiding local stress concentration, enhancing the structure's torsional resistance and vibration resistance, ensuring stable positioning under high-torque tightening conditions, and guaranteeing long-term consistency and reliability of connection quality.

[0020] 2. In this utility model, the main body is made of insulating resin material, which not only has good insulation performance, but also good mechanical strength and high temperature resistance, effectively improving the safety of the tooling in electrical working environments, preventing short circuits or electric shock accidents, and ensuring that the tooling has sufficient structural strength and dimensional stability during frequent assembly, thus extending its service life.

[0021] 3. In this utility model, there is a color difference between the main body and the copper busbar and / or relay. The color contrast significantly enhances the visual recognition of the tooling, making it easier for operators to quickly identify the installation position and status, effectively reducing misoperation and improving assembly efficiency. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a copper busbar positioning fixture according to the present invention.

[0023] Figure 2 This is a structural schematic diagram of a copper busbar positioning fixture from another perspective.

[0024] Figure 3 for Figure 2 A structural diagram from another perspective.

[0025] Figure 4 This is a diagram showing the working state of the copper busbar during positioning in this utility model.

[0026] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0027] 100, Body; 110, First positioning groove; 111, First limiting surface; 120, Second positioning groove; 121, Second limiting surface; 130, Positioning hole; 140, Third positioning groove; 150, Clearance groove; 200, Copper busbar; 300, Relay. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] like Figures 1 to 4 As shown, in this embodiment, a copper busbar positioning fixture is used to position the copper busbar 200 on the relay 300. The copper busbar positioning fixture includes:

[0034] Ontology 100;

[0035] The first positioning groove 110 is provided on the body 100 and forms a snap-fit ​​with the copper busbar 200. The first positioning groove 110 has at least three first limiting surfaces 111 facing different directions. When the first positioning groove 110 is snapped with the copper busbar 200, the three first limiting surfaces 111 respectively abut against the outer wall of the copper busbar 200.

[0036] The second positioning groove 120 is provided on the body 100 and forms a snap-fit ​​engagement with the relay 300. The second positioning groove 120 has at least four second limiting surfaces 121 facing different directions. When the second positioning groove 120 is snap-fitted with the relay 300, the four second limiting surfaces 121 respectively abut against the outer wall of the relay 300.

[0037] When the first positioning groove 110 engages with the copper busbar 200 and the second positioning groove 120 engages with the relay 300, the copper busbar 200 and the relay 300 remain relatively fixed. This design achieves multi-point, multi-degree-of-freedom rigid limiting for both the copper busbar 200 and the relay 300. This not only effectively solves the problem of copper busbar 200 shifting or misaligning due to screw tightening force during traditional manual installation, significantly improving positioning accuracy and assembly reliability, but also disperses pressure and stress during the tightening process through multi-point contact, avoiding local stress concentration, enhancing the structure's torsional resistance and vibration resistance, ensuring stable positioning even under high-torque tightening conditions, and guaranteeing long-term consistency and reliability of connection quality.

[0038] Specifically, such as Figures 1 to 4 As shown in this embodiment, the copper busbar positioning fixture is used to achieve precise positioning and relative fixation between the copper busbar 200 and its terminals during the assembly process of the relay 300, so as to solve the technical problem in the prior art that the copper busbar 200 is offset or misaligned due to inaccurate manual alignment and uneven force during screw tightening, which affects the reliability of electrical connection and assembly efficiency.

[0039] In this embodiment, the copper busbar positioning fixture includes a body 100. The body 100 has a rectangular strip structure, which not only facilitates hand operation by the operator but also provides sufficient strength and stability to support the entire positioning process.

[0040] Furthermore, the body 100 is made of insulating resin material, which not only has good insulation performance, but also good mechanical strength and high temperature resistance, effectively improving the safety of the tooling in electrical working environments, preventing short circuits or electric shock accidents, while ensuring that the tooling has sufficient structural strength and dimensional stability during frequent assembly, thus extending its service life.

[0041] Furthermore, the insulating resin material includes one or more combinations of phenolic resin, epoxy resin, and polyester resin. Preferably, phenolic resin is used as the base material because it has excellent electrical insulation, heat resistance, rigidity, and low cost advantages, making it particularly suitable for tooling fixtures in mass production.

[0042] In this embodiment, there is a color difference between the body 100 and the copper busbar 200 (usually silver after tin plating) and / or the relay 300 (usually with a black or gray casing). Preferably, the body 100 is injection molded using a high-contrast color such as yellow, red, or blue. This design makes the tooling highly visually identifiable at the assembly site, facilitating operators to quickly identify, locate, and confirm the installation status, reducing the risk of misoperation, and improving assembly efficiency.

[0043] In this embodiment, the main body 100 is provided with a first positioning groove 110 and a second positioning groove 120. The first positioning groove 110 is used to engage with the copper busbar 200 to be installed, achieving spatial positioning of the copper busbar 200; the second positioning groove 120 is used to engage with the housing of the terminal area of ​​the relay 300, achieving reference positioning of the relay 300. Through this dual-station collaborative positioning structure, the fixture can forcibly constrain the copper busbar 200 and the relay 300 to their designed installation positions before screw tightening, ensuring precise alignment and relative fixation, thereby effectively avoiding misalignment and offset during assembly, and significantly improving assembly efficiency and connection reliability.

[0044] Furthermore, the first positioning groove 110 is recessed from bottom to top, and its inner wall has at least three first limiting surfaces 111 facing different directions. Preferably, the three first limiting surfaces 111 are connected in sequence and arranged in a U-shape to form a U-shaped slot structure with the opening facing downward. When the tooling is pressed vertically downward from above and engaged with the pre-fixed copper busbar 200 and relay 300, the bottom limiting surface of the U-shaped groove abuts against the upper surface of the copper busbar 200, and the two lateral limiting surfaces are respectively attached to the left and right side walls of the copper busbar 200, forming a stable three-point constraint structure. This design can effectively limit the lateral sliding of the copper busbar 200 in the horizontal direction (X-axis), the vertical movement in the vertical direction (Z-axis), and the tilting tendency around the Y-axis, realizing rigid limiting of multiple degrees of freedom of the copper busbar 200. In addition, the U-shaped groove structure provides radial clamping force and also has good torsional stiffness, which can effectively suppress the rotation or warping of the copper busbar 200 caused by torque transmission during screw tightening, further ensuring the coaxial alignment of the copper busbar 200 and the mounting hole of the relay 300, and ensuring the stability and contact reliability of the electrical connection.

[0045] Furthermore, the second positioning groove 120 is also recessed from bottom to top, and its inner wall has at least four second limiting surfaces 121 facing different directions. Preferably, of the four second limiting surfaces 121, two are arranged opposite to each other, and the other two are perpendicularly connected to each other and located between the two oppositely arranged second limiting surfaces 121, forming a rectangular or box-shaped cross-section structure. When the tooling is clamped onto the pre-fixed copper busbar 200 and relay 300, the four second limiting surfaces 121 respectively abut against the upper surface, left and right side walls, and front wall perpendicularly connected to the left and right side walls of the relay 300, achieving multi-faceted fit and spatial limitation.

[0046] Specifically, the two opposing second limiting surfaces 121 restrict the lateral movement of the relay 300 in the X-axis direction; the two mutually perpendicular second limiting surfaces 121 constrain the relay 300's forward and backward displacement in the Y-axis direction and its vertical movement in the Z-axis direction, respectively. Through the synergistic effect of the above four limiting surfaces, the second positioning groove 120 achieves multi-degree-of-freedom constraint on the relay 300 in three-dimensional space, effectively preventing translational, warping, or rotational displacements during assembly. Simultaneously, the four-sided limiting structure can evenly distribute external forces to multiple contact areas, avoiding stress concentration and significantly enhancing the clamping stability and anti-interference capability of the tooling for the relay 300. Furthermore, this structure is compatible with the common box-type housing contour of the relay 300's wiring area, ensuring a smooth and tight fit during positioning, further improving overall positioning accuracy and assembly reliability.

[0047] In this embodiment, the width of the first positioning groove 110 is adapted to the width of the copper busbar 200 to achieve a tight snap-fit. Specifically, the groove width is slightly larger than the thickness of the copper busbar 200, ensuring that the copper busbar 200 can be smoothly inserted while avoiding loose positioning due to excessive gaps. Similarly, the width of the second positioning groove 120 matches the width of the housing of the wiring area of ​​the relay 300, ensuring that the relay 300 is accurately positioned and tightly fitted in the groove, preventing shaking or displacement during assembly.

[0048] Furthermore, both the first positioning groove 110 and the second positioning groove 120 are located in the bottom area of ​​the body 100, at different horizontal heights, and are interconnected. Specifically, the first positioning groove 110 is located on the side of the second positioning groove 120 opposite to the relay 300, and the two are connected through an opening, forming a vertically continuous interconnected structure. This design allows the tooling to be pressed vertically down and fitted as a whole during installation, simplifying the operation and eliminating the need for step-by-step alignment. Furthermore, the interconnected design provides necessary clearance for the upward-protruding structure of the relay 300, avoiding assembly interference and ensuring smooth positioning of the tooling.

[0049] Preferably, the projections of the center lines of the first positioning groove 110 and the second positioning groove 120 in the vertical direction coincide. This design ensures that the two positioning grooves have good coaxiality and symmetry in spatial layout, ensuring that the copper busbar 200 and the relay 300 are subjected to balanced forces during assembly, and avoiding additional bending moments or torsional stresses caused by positioning reference offset.

[0050] In this embodiment, the body 100 is provided with a circular positioning hole 130. This positioning hole 130 extends vertically through the first positioning groove 110 and the second positioning groove 120, and the inner diameter of the positioning hole 130 is greater than or equal to the outer diameter of the fastener head. This design allows the fastener head to pass smoothly through and provides sufficient space for the operation of the fastening tool. After the copper busbar 200 and the relay 300 form a temporary connection through pre-fixation (such as manually screwing in a screw), this fixture is vertically inserted from above, so that the copper busbar 200 is embedded in the first positioning groove 110 and the relay 300 is embedded in the second positioning groove 120. At this time, the pre-fixed fastener naturally passes into the circular positioning hole 130 on the body 100. After the fixture completes precise positioning and ensures that the copper busbar 200 and the relay 300 are completely aligned, the operator can directly continue to tighten the fastener through the positioning hole 130 to achieve final high-torque locking. In addition, since the positioning hole 130 is a through hole structure and its inner diameter is adapted to the fastener head, after tightening, the fixture can be directly pulled out vertically without interfering with the tightened screw, ensuring that the fixture can be easily removed and reused.

[0051] Furthermore, the body 100 is provided with a third positioning groove 140 arranged along its own length. This third positioning groove 140 is located on the side wall of the body 100 away from the relay 300, recessed inward from the outer surface of the body 100, and communicates with the first positioning groove 110. The main function of the third positioning groove 140 is to provide a clearance passage for the lateral extension of a copper busbar 200 with a specific structure (such as an L-shaped bent copper busbar 200). In practical applications, some electrical connections use L-shaped or bent copper busbars 200, one end of which is vertically connected to the relay 300, and the other end extends horizontally for connection with other electrical components. When such a copper busbar 200 is inserted into the first positioning groove 110 for positioning, if its lateral extension does not have a corresponding clearance structure, it will interfere with the side wall of the body 100, causing the tooling to fail to be fully positioned. By providing the third positioning groove 140, the horizontal extension of the L-shaped copper busbar 200 can pass smoothly through the groove, avoiding assembly interference and ensuring that the tooling can be accurately and smoothly fitted in and precisely positioned. This design significantly improves the tooling's adaptability to different copper busbar structures, enhancing its versatility and application flexibility.

[0052] Preferably, the third positioning groove 140 has an outward-facing U-shaped structure with an arc-shaped or flat bottom and parallel side walls, forming a transverse U-shaped channel. This structure not only has good mechanical stability but also effectively guides the extension section of the copper busbar 200 to be smoothly inserted.

[0053] In this embodiment, a clearance groove 150 is provided on the side of the body 100 opposite to the third positioning groove 140. The clearance groove 150 is a through groove with a semi-circular cross-section that is recessed inward from the outer surface of the body 100. Its axis extends vertically and is consistent with the installation direction of the tooling, forming a concave-convex fit with the relay 300. This design can effectively avoid structures with cylindrical or near-cylindrical protrusions on the relay 300. When the tooling is inserted from above, the corresponding protrusion of the relay 300 can be embedded in the clearance groove 150 to achieve spatial matching, eliminate assembly interference, and ensure that the tooling completes the positioning action accurately and smoothly.

[0054] In this embodiment, multiple sets of the first positioning groove 110, the second positioning groove 120, the positioning hole 130, the third positioning groove 140, and the clearance groove 150 are provided, and are arranged equidistantly along the length of the body 100. Specifically, each positioning structure includes one first positioning groove 110, one second positioning groove 120, one third positioning groove 140, and two clearance grooves 150. The grooves cooperate with each other in space to form a complete positioning unit. Multiple positioning units are evenly distributed along the longitudinal direction of the body 100 to form an array layout. This design enables batch and synchronous positioning of multi-point connection structures, greatly improving the applicability and assembly efficiency of the tooling.

Claims

1. A copper busbar positioning fixture for positioning a copper busbar (200) on a relay (300), characterized in that, The copper busbar positioning fixture includes: Ontology(100); The first positioning groove (110) is provided on the body (100) and forms a snap-fit ​​with the copper busbar (200). The first positioning groove (110) has at least three first limiting surfaces (111) facing different directions. When the first positioning groove (110) is snapped with the copper busbar (200), the three first limiting surfaces (111) respectively abut against the outer wall of the copper busbar (200). The second positioning groove (120) is provided on the body (100) and forms a snap-fit ​​with the relay (300). The second positioning groove (120) has at least four second limiting surfaces (121) facing different directions. When the second positioning groove (120) is snapped with the relay (300), the four second limiting surfaces (121) respectively abut against the outer wall of the relay (300). When the first positioning groove (110) and the copper busbar (200) are engaged, and the second positioning groove (120) is engaged with the relay (300), the copper busbar (200) and the relay (300) can be kept relatively fixed.

2. The copper busbar positioning fixture according to claim 1, characterized in that, The three first limiting surfaces (111) are connected in sequence and arranged in a U-shape. Among the four second limiting surfaces (121), two second limiting surfaces (121) are arranged opposite each other, and the other two second limiting surfaces (121) are connected perpendicularly to each other and located between the two oppositely arranged second limiting surfaces (121).

3. The copper busbar positioning fixture according to claim 1, characterized in that, The width of the first positioning groove (110) is adapted to the width of the copper busbar (200), and the width of the second positioning groove (120) is adapted to the width of the relay (300). The first positioning groove (110) and the second positioning groove (120) are at different horizontal heights and are interconnected.

4. The copper busbar positioning fixture according to claim 3, characterized in that, The first positioning groove (110) is located on the side of the second positioning groove (120) away from the relay (300), and the projection of the center line of the first positioning groove (110) and the second positioning groove (120) in the vertical direction coincides.

5. The copper busbar positioning fixture according to claim 1, characterized in that, The body (100) is provided with a positioning hole (130), which passes through the first positioning groove (110) and the second positioning groove (120) in sequence along the vertical direction, and the inner diameter of the positioning hole (130) is greater than or equal to the outer diameter of the fastener head.

6. The copper busbar positioning fixture according to claim 5, characterized in that, The body (100) is provided with a third positioning groove (140) arranged along its own length direction. The third positioning groove (140) is recessed inward from the outer surface of the body (100) and communicates with the first positioning groove (110).

7. A copper busbar positioning fixture according to claim 6, characterized in that, The body (100) has a relief groove (150) on the side away from the third positioning groove (140). The relief groove (150) is recessed inward from the outer surface of the body (100) and forms a concave-convex fit with the relay (300).

8. A copper busbar positioning fixture according to claim 7, characterized in that, The first positioning groove (110), the second positioning groove (120), the positioning hole (130), the third positioning groove (140) and the clearance groove (150) are all provided in multiple sets, and are arranged equidistantly along the length direction of the body (100).

9. A copper busbar positioning fixture according to claim 1, characterized in that, The body (100) is made of insulating resin material.

10. A copper busbar positioning fixture according to claim 1, characterized in that, There is a color difference between the body (100) and the copper busbar (200) and / or the relay (300).

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