Metal bar assembly

Abstract

The utility model relates to the technical field of metal bars, in particular to a metal bar assembly, which comprises a metal bar, and the side part of the metal bar is concavely provided with a clamping groove; a containing cavity is formed in the injection molding part, the metal bar is partially arranged in the containing cavity, and positioning grooves are formed in the cavity walls of the two sides of the containing cavity in a concave mode; the limiting buckle is inserted into the containing cavity and embedded into the clamping groove, and the outer sides of the two end faces of the limiting buckle abut against the groove walls of the positioning grooves respectively. The limiting buckle is clamped in the clamping groove of the metal bar, meanwhile, the outer sides of the two ends of the limiting buckle abut against the groove walls of the positioning grooves in the injection molding piece, the metal bar can be restrained and fixed in multiple directions, and in the injection molding process of the metal bar, local deformation of the metal bar due to pressure or temperature changes and the like can be prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of metal busbars, and more particularly to a metal busbar assembly. Background Technology

[0002] The metal busbar has excellent electrical conductivity, enabling efficient transmission of current within the battery. During battery operation, electrons between the positive and negative electrodes need to be transferred through the aluminum busbar to ensure smooth current flow.

[0003] Because the thermal expansion coefficients of the metal strip and the injection molded part are quite different, the high temperature of the molten plastic during the injection molding process can easily cause the metal strip to expand. However, during the cooling process, the rate and magnitude of plastic shrinkage are much greater than that of the metal strip, which generates stress between the metal strip and the injection molded part, making the metal strip prone to deformation. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a metal busbar assembly.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A metal busbar assembly, the metal busbar assembly comprising:

[0007] A metal strip, wherein a groove is recessed on the side of the metal strip;

[0008] The injection molded part has a receiving cavity, and a portion of the metal strip is disposed in the receiving cavity. The two side walls of the receiving cavity are recessed with positioning grooves.

[0009] The limiting buckle is inserted into the receiving cavity and embedded in the slot, and the outer sides of both ends of the limiting buckle abut against the groove wall of each positioning groove.

[0010] As a preferred technical solution of this utility model, the limiting buckle is U-shaped; the limiting buckle includes a first locking plate, a connecting part and a second locking plate connected in sequence; one side of the first locking plate abuts against one end face of the metal strip, and the other side of the first locking plate abuts against the groove wall of one of the positioning grooves; one side of the second locking plate abuts against the other end face of the metal strip, and the other side of the second locking plate abuts against the groove wall of the other positioning groove.

[0011] As a preferred technical solution of this utility model, a first abutting part is provided on the side opposite to the first card plate and the second card plate, and each first abutting part abuts against the two end faces of the metal strip respectively; a second abutting part is provided on the side opposite to each first abutting part, and the top of each second abutting part is embedded in the card slot.

[0012] As a preferred technical solution of this utility model, the metal bar includes an integrally formed metal bar body and a support part, and the metal bar body is disposed in the accommodating cavity.

[0013] As a preferred technical solution of this utility model, the opening of the support part is provided with a locking hole.

[0014] As a preferred technical solution of this utility model, the support portion is provided with a plurality of grooves.

[0015] As a preferred technical solution of this utility model, the support part is provided with a through hole, and the opening of the accommodating cavity is provided with a reinforcing column for passing through the through hole.

[0016] As a preferred technical solution of this utility model, the metal arrangement is provided with a first positioning hole; the injection molded part is provided with a positioning post for inserting into the positioning hole.

[0017] As a preferred technical solution of this utility model, the injection molded part is provided with a plurality of second positioning holes.

[0018] As a preferred technical solution of this utility model, the limiting buckle is made of elastic plastic.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] By using limit buckles to lock into the slots of the metal strip, and with the outer ends of the limit buckles abutting against the groove walls of each positioning groove in the injection molded part, the metal strip can be constrained and fixed in multiple directions. During the injection molding process, it can prevent the metal strip from undergoing local deformation due to pressure or temperature changes. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the metal busbar assembly according to an embodiment of the present invention.

[0023] Figure 2 This is an exploded view of the structure of the metal strip and injection molded part according to an embodiment of the present invention.

[0024] Figure 3 This is an exploded view of the structure of the metal strip and the limiting buckle in an embodiment of this utility model.

[0025] Figure 4 This is a structural diagram of the limiting buckle according to an embodiment of the present utility model.

[0026] Figure 5 This is a structural cross-sectional view of the metal strip and limiting buckle of this utility model embodiment.

[0027] Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0028] Figure 7 This is a top-view structural cross-sectional view of the metal strip assembly of this utility model embodiment.

[0029] Figure 8 yes Figure 7 A magnified view of a section at point B in the middle.

[0030] Figure 9 yes Figure 1 Another perspective on the structure diagram.

[0031] Figure 10 This is an exploded view of the structure of the metal strip and injection molded part according to an embodiment of the present invention.

[0032] Numbers in the diagram

[0033] 1. Metal strip; 11. Slot; 12. First positioning hole; 13. Support part; 131. Locking hole; 132. Groove; 133. Through hole; 14. Metal strip body;

[0034] 2. Injection molded part; 21. Receiving cavity; 22. Second positioning hole; 23. Reinforcing post; 24. Positioning post;

[0035] 3. Limiting buckle; 31. First locking plate; 32. Connecting part; 33. Second locking plate; 34. First abutting part; 35. Second abutting part. Detailed Implementation

[0036] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0037] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0038] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0039] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0040] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 this application 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 this application.

[0041] Furthermore, the terms "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. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0042] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0043] In order to solve the technical problem in the prior art that the high temperature of molten plastic easily causes the metal strip 1 to expand, while the rate and magnitude of plastic shrinkage during the cooling process are much greater than that of the metal strip 1, resulting in stress between the aluminum strip and the injection molded part 2, thus causing the metal strip 1 to be prone to deformation, this utility model provides a metal strip 1 assembly.

[0044] The following describes in detail the specific structure of a metal bar assembly 1 provided by this utility model embodiment. As shown in the accompanying drawings, the specific structure of the metal bar assembly 1 includes a metal bar 1, an injection molded part 2, and a limiting buckle 3.

[0045] according to Figure 2 and Figure 3 As shown, a groove 11 is recessed on the side of the metal strip 1. Specifically, the groove 11 is provided on one side of the metal strip 1 to hold the limiting buckle 3 in the groove 11, so that the limiting buckle 3 can be accurately set on one side of the metal strip 1 to form a tight abutment. This setting can increase the connection between the metal strip 1 and the overall structure and optimize the mutual constraint between the two. On the other hand, it can also avoid the deformation of the metal strip 1 during the injection molding process due to uneven stress or asynchronous cooling and shrinkage of different parts of the material.

[0046] It is understood that the metal busbar 1 in this embodiment of the present invention is a copper busbar or an aluminum busbar, and the specific type is not limited here.

[0047] The injection molded part 2 has a receiving cavity 21, and part of the metal strip 1 is built into the receiving cavity 21. Positioning grooves are recessed on both sides of the cavity wall of the receiving cavity 21.

[0048] Specifically, a receiving cavity 21 is formed inside the injection molded part 2 to accommodate and fix the entire metal strip 1 or a part thereof. On the one hand, it protects the metal strip 1 from damage by the external environment and also provides support for the metal strip 1. On the other hand, by placing the metal strip 1 or a part thereof in the receiving cavity 21, the metal strip 1 can be precisely positioned to ensure that the metal strip 1 can be stably embedded in the receiving cavity 21, thereby providing a certain degree of firm connection between the two and preventing the injection molded part 2 from shifting during the molding process. Thus, through the tight fit between the metal strip 1 and the injection molded part 2, it can be ensured that the injection molded part 2 will not shift its position due to external forces (such as mechanical vibration) after cooling and solidification.

[0049] It should be noted that the injection molded part 2 is made of insulating material, which wraps around the outside of the metal busbar 1, and plays a role in isolating and insulating the metal busbar 1, and can also prevent current leakage and short circuit.

[0050] according to Figure 2-3 As shown, the limiting buckle 3 is inserted into the receiving cavity 21 and embedded in the slot 11, and the outer sides of both ends of the limiting buckle 3 abut against the slot walls of each positioning slot.

[0051] Specifically, the limiting buckle is U-shaped; the limiting buckle includes a first locking plate 31, a connecting part 32 and a second locking plate 33 connected in sequence; one end face of the first locking plate 31 abuts against one side of the metal strip 1, and the other side of the first locking plate 31 abuts against the groove wall of one of the positioning grooves; one side of the second locking plate 33 abuts against the other end of the metal strip, and the other side of the second locking plate 33 abuts against the groove wall of another positioning groove. At this time, it can constrain and fix the metal strip 1 in multiple directions, which helps to reduce the deformation caused by local pressure on the metal strip 1.

[0052] according to Figure 3-8 As shown, in a further embodiment, a first abutting part 34 is provided on the side opposite to the first card plate 31 and the second card plate 33, and each first abutting part 34 abuts against both ends of the metal strip 1; a second abutting part 35 is provided on the side opposite to each first abutting part 34, and each second abutting part 35 is engaged in the card slot 11.

[0053] Specifically, to prevent the metal strip 1 from deforming due to the high temperature and impact generated during injection molding, resulting in uneven thickness and easy cracking, the limiting buckle 3 is installed in the slot 11. The end faces of the two first abutment parts 34 are tightly attached to both ends of the metal strip 1, that is, the metal strip 1 is located between the two first abutment parts 34. At this time, since the end faces of the first and second clamping plates are tightly attached to the groove walls of each positioning groove, the metal strip 1 can be constrained and fixed in multiple directions when it is being injected with molten metal. The function of this is to help reduce the deformation caused by local pressure on the metal strip 1, and ensure the consistency and stability of the shape of the metal strip 1; at the same time, since the top of each second abutment part 35 is attached to the top surface of the slot 11 and the bottom of each second abutment part 35 is attached to the bottom surface of the slot 11, this arrangement is used to stabilize the metal strip 1 in the vertical direction, and also to enhance the rigidity of the metal strip 1, thereby helping to resist the force applied by the outside (such as injection pressure), avoiding the metal from twisting or deforming in the direction of less deformation resistance, and ensuring the uniform thickness of the injection molded part 2.

[0054] The end faces of the first clamping plate 31 and the second clamping plate 33 respectively abut against the groove wall of the positioning groove in the injection molded part 2. At the same time, through the cooperation of the first abutting part 34 and the second abutting part 35, the metal strip 1 is constrained in multiple directions. During the injection molding process, the metal strip 1 can be prevented from local deformation due to pressure or temperature changes, and the production cost and manufacturing difficulty of the overall structure can be simplified.

[0055] according to Figure 2 As shown, in some specific embodiments, the metal bar 1 includes an integrally formed metal bar body and a support part 13, with the metal bar body disposed within the receiving cavity 21.

[0056] Specifically, the support part 13 is located outside the receiving cavity 21. The support part 13 is used to support the metal strip 1. The support part 13 can ensure the accurate positioning of the metal strip 1 in the injection mold and prevent it from shifting or moving during the injection process. In addition, it can also help the metal strip 1 withstand the high pressure and stress generated by the molten plastic in the mold, and prevent damage or deformation caused by excessive mechanical stress.

[0057] In a further embodiment, the support 13 is detachably disposed in the mold. When it is necessary to disassemble and remove the metal strip 1 assembly, the support 13 can be separated from the mounting position in the mold, and the entire metal strip 1 assembly can be removed.

[0058] according to Figure 1 As shown, specifically, the support part 13 is provided with a locking hole 131.

[0059] Specifically, in order to improve the ease of assembly or disassembly of the support part 13, when it is necessary to disassemble and remove the entire metal strip 1 assembly, it is only necessary to connect the locking hole 131 of the support part 13 with the fixing hole in the mold. At this time, the locking member is inserted into both the locking hole 131 and the fixing hole so that the support part 13 can be fixed in the mold. Conversely, when the locking member is removed from the locking hole 131 and the fixing hole, the entire metal strip 1 assembly can be removed from the mold.

[0060] It is understood that the locking hole 131 and the fixing hole in the aforementioned embodiment are both threaded holes, and the locking element is a bolt. With this configuration, by inserting the bolt into the two threaded holes at the same time, the outer thread of the bolt is connected to the threaded holes of the two threaded holes. By tightening the bolt, the outer thread of the bolt applies a preload force to the inner thread of each threaded hole, thereby fixing the support part 13 in the designated position.

[0061] according to Figure 1 As shown, in some specific embodiments, the support portion 13 is recessed with a plurality of grooves 132.

[0062] Specifically, the pressure on the support 13 is distributed to multiple local areas through multiple grooves 132, reducing pressure concentration and preventing the entire support 13 from easily deforming. This increases the rigidity and strength of the support 13, thereby improving its overall quality. Specifically, the pressure on the support 13 is evenly distributed to multiple local areas through multiple grooves 132, reducing stress concentration and preventing deformation. When external force or load is applied to the support 13, the pressure is distributed to various local areas of the grooves 132, and the pressure on each local area of ​​the groove 132 is relatively reduced, thus increasing the overall load-bearing capacity of the support 13.

[0063] according to Figure 2 As shown, in some specific embodiments, the support part 13 has a through-hole 133, and the opening of the accommodating cavity 21 is provided with a reinforcing post 23 for passing through the through-hole 133.

[0064] Specifically, the support portion 13 has a through-hole 133 to facilitate the installation of the reinforcing column 23, preventing structural interference between the metal strip 1 and the injection molded part 2 and improving the overall structural flexibility. By setting the reinforcing column 23 at the opening of the receiving cavity 21 of the injection molded part 2, the bending, compressive, and tensile strength of this part can be significantly improved. Specifically, since the reinforcing column 23 can make the stress distribution of the overall structure more uniform, it avoids material fatigue or fracture caused by excessive local stress, thus preventing this part from easily deforming or cracking when subjected to external forces.

[0065] In some specific embodiments, the bottom of the metal strip 1 is provided with a first positioning hole 12, and the injection molded part 2 is provided with a positioning post 24 for inserting into the first positioning hole 12.

[0066] Specifically, when injection molding is performed in the mold, the positioning pin 24 of the injection molded part 2 is inserted into the first positioning hole 12 of the metal strip 1, so that the metal strip 1 can be precisely assembled in the designated position, preventing misalignment or displacement during injection molding in the mold, and further improving the stability of the metal strip 1.

[0067] according to Figure 10 As shown, in some specific embodiments, the injection molded part 2 has a second positioning hole 22.

[0068] Specifically, during injection molding, when the metal strip 1 is subjected to the pressure of the molten plastic, it generates a backward thrust, causing it to deform backward. By opening multiple second positioning holes 22 in the injection molded part 2, positioning pins set in the mold are respectively inserted into each second positioning hole 22. Each positioning pin plays a physical support role, that is, each positioning pin presses against the injection molded part 2, which counteracts the thrust of the molten plastic on the metal strip 1, so that the metal strip 1 set in the injection molded part 2 can be fixed in the current position, effectively preventing the metal strip 1 from deforming backward.

[0069] In the aforementioned embodiments, the injection molded part 2 may be provided with multiple second positioning holes 22, thereby adding multiple support points to the metal strip 1 to limit the degree of freedom of movement of the metal strip 1 under force, making it more difficult for the metal strip 1 to deform backward.

[0070] according to Figure 9 As shown, in some specific embodiments, the limiting buckle 3 is made of elastic plastic.

[0071] Specifically, when the limiting buckle 3 is set in the slot 11 of the metal strip 1, since the limiting buckle 3 is made of elastic plastic, it can be bent to deform the limiting buckle 3 until it is close to the slot. When the limiting buckle 3 is released, the limiting buckle 3 can be tightly attached to both ends of the metal strip 1 during the process of restoring its original shape. This setting makes it easy for production personnel to directly set the limiting buckle 3 in the slot 11, thereby simplifying the assembly process of the two.

[0072] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A metal bank assembly, characterized by, The metal row assembly comprises: a metal row, a side of the metal row is concave with a clamping slot; an injection molding part, the injection molding part is provided with a containing cavity, part of the metal row is arranged in the containing cavity, both side cavity walls of the containing cavity are concave with positioning slots; a limiting buckle, the limiting buckle is inserted into the containing cavity and embedded in the clamping slot, both end surface outer sides of the limiting buckle are respectively abutted with slot walls of the positioning slots.

2. The metal bank assembly of claim 1, wherein, The limiting buckle is in U shape; the limiting buckle comprises a first clamping plate, a connecting part and a second clamping plate which are connected in sequence; one side of the first clamping plate is abutted with one end surface of the metal row, the other side of the first clamping plate is abutted with a slot wall of one of the positioning slots, one side of the second clamping plate is abutted with the other end surface of the metal row, the other side of the second clamping plate is abutted with a slot wall of the other positioning slot.

3. The metal bank assembly of claim 2, wherein, Both sides of the first clamping plate and the second clamping plate opposite to each other are convex with first abutment parts, the first abutment parts are respectively abutted with both end surfaces of the metal row; both sides of the first abutment parts opposite to each other are provided with second abutment parts, top parts of the second abutment parts are embedded in the clamping slot.

4. The metal bank assembly of any one of claims 1-3, wherein, The metal row comprises a metal row main body and a supporting part which are integrally formed, the metal row main body is arranged in the containing cavity.

5. The bank of metal assemblies of claim 4, wherein, The supporting part is provided with a locking hole.

6. The metal bank assembly of claim 4, wherein, The supporting part is concave with a plurality of grooves.

7. The metal bank assembly of claim 4, wherein, The supporting part is provided with a through hole, the containing cavity is provided with a reinforcing column for penetrating the through hole.

8. The metal bank assembly of claim 1, wherein, The metal row is provided with a first positioning hole; the injection molding part is convex with a positioning column for inserting into the first positioning hole.

9. The metal bank assembly of claim 1, wherein, The injection molding part is provided with a plurality of second positioning holes.

10. The metal bank assembly of claim 1, wherein, The limiting buckle is made of elastic plastic.

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