Injection molding copper bar injection molding structural member with bushing nut

Abstract

The utility model discloses a kind of injection molding copper bar injection molding structural members with bushing nut, including insulating shell;Copper bar is located in insulating shell;Bushing, its side surface is fixed with insulating shell, bushing has the light hole of axial through, insulating shell exposes the axial both ends of bushing;Nut, with the internal thread hole of axial through, one end of nut is fixed with copper bar;Wherein, nut includes first nut and second nut, insulating shell and copper bar are contacted with the side surface of first nut and expose the axial both ends of first nut, copper bar exposes one end of second nut, insulating shell covers the other end of second nut;The junction of the side surface of first nut and one side shaft end has the circumferential rib of radially outward protruding, the top of circumferential rib is extruded contact with copper bar.Form mechanical locking by circumferential rib extrusion copper bar, improve anti-vibration property.Bushing both ends exposure give consideration to insulating shell positioning and light hole limiting function.

Description

Technical Field

[0001] This utility model relates to the field of copper busbar structural components, specifically to an injection-molded copper busbar structural component with bushing nuts. Background Technology

[0002] In the field of electrical connections, PVC-coated copper busbars are widely used due to their combination of conductivity and insulation protection. However, in existing injection-molded PVC-coated copper busbar structures, if the copper busbar and nut are simply fixed together, reliability issues may arise. For example, they may loosen due to vibration or assembly stress, thus affecting conductivity stability. Utility Model Content

[0003] The problem to be solved by this utility model is to provide an injection-molded copper busbar structural component with bushing nuts.

[0004] To solve the above problems, this utility model provides an injection-molded copper busbar structural component with a bushing nut. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows: An injection-molded copper busbar structural component with a bushing nut includes: an insulating shell; a copper busbar located inside the insulating shell; a bushing that is fixed to the insulating shell on its side, the bushing having an axially penetrating hole, the insulating shell exposing the axial ends of the bushing; and a nut having an axially penetrating internal threaded hole, one end of the nut being fixed to the copper busbar; wherein the nut includes a first nut and a second nut, the insulating shell and the copper busbar both contacting the side of the first nut and exposing the axial ends of the first nut, the copper busbar exposing one end of the second nut, and the insulating shell covering the other end of the second nut; the junction of the side of the first nut and one side of the shaft end has a radially outwardly protruding circumferential rib, the top of the circumferential rib being in extrusive contact with the copper busbar.

[0005] As a further improvement of this utility model, the first nut includes an axially arranged first axial segment and a second axial segment. The diameter of the first axial segment is smaller than the diameter of the second axial segment. A first shoulder is formed at the junction of the first axial segment and the second axial segment. The first shoulder is perpendicular to the axis of the first nut. The first axial segment and the first shoulder are in contact with and fixed to the copper busbar. A circumferential rib is located at one end of the first axial segment. The second nut includes an axially arranged third axial segment and a fourth axial segment. The diameter of the third axial segment is smaller than the diameter of the fourth axial segment. A second shoulder is formed at the junction of the third axial segment and the fourth axial segment. The second shoulder is perpendicular to the axis of the second nut. The third axial segment and the second shoulder are in contact with and fixed to the copper busbar.

[0006] As a further improvement of this utility model, the axial lengths of the first axial segment and the third axial segment are both less than the thickness of the copper busbar.

[0007] As a further improvement of this utility model, the side of the bushing has a concave circumferential groove.

[0008] As a further improvement of this utility model, the front and back sides of the insulating shell have axially recessed areas extending in opposite directions, the shaft end of the bushing is located on the bottom surface of the axially recessed area, and the two axially recessed areas are connected by a first through hole, and the bushing is fixed in contact with the surface of the first through hole.

[0009] As a further improvement of this utility model, the insulating shell has a rectangular groove that can accommodate a portion of the copper busbar, and the insulating shell has a second through hole on the bottom surface of the rectangular groove that exposes the first nut.

[0010] As a further improvement of this utility model, one side of the insulating shell has a raised outer bulge, the inside of which is a blind hole, and the inner wall of the blind hole contacts and is fixed to the outer wall of the first nut.

[0011] As a further improvement of this utility model, the insulating shell has protruding dividing ribs, which are located between two adjacent copper busbars.

[0012] As a further improvement of this utility model, the first nut and the second nut are located at both ends of the copper busbar, and the number of the first nut, the second nut and the copper busbar are equal.

[0013] As a further improvement of this utility model, the bushing does not contact the copper busbar, and the space between the bushing and the copper busbar is filled with the material of the insulating shell.

[0014] The beneficial technical effects of using the plastic-coated copper busbar injection molding structure with bushing nuts of this application are: The circumferential ribs on the side of the first nut press against the copper busbar, enhancing the fixing strength between the nut and the copper busbar. Similar to a snap-fit ​​structure, this effectively reduces loosening caused by vibration or assembly stress, improving the stability of the conductive connection. The bushing's side is fixed in contact with the insulating shell, while its axial ends are exposed. This allows for reliable positioning of the bushing through the insulating shell, while retaining the assembly function of the bushing's aperture, thus enhancing the overall assembly stability of the structure.

[0015] The design, where both ends of the first nut are exposed and one end of the second nut is exposed while the other end is covered by an insulating shell, ensures the connection requirements between the nut and external components, while also protecting the non-connected end of the second nut through the insulating shell, thus optimizing the balance between insulation and connection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a top view of one embodiment of the present invention; Figure 2 This is a cross-sectional view (AA) of one embodiment of the present invention; Figure 3 This is a BB cross-sectional view of one embodiment of the present invention; Figure 4 This is a CC cross-sectional view of one embodiment of the present invention; Figure 5 This is a perspective view of one embodiment of the present utility model; Figure 6 This is a perspective view of one embodiment of the present utility model; Figure 7 This is a perspective view of one embodiment of the present utility model; Figure 8 This is a perspective view of one embodiment of the present invention with the insulating shell concealed.

[0018] 1-Insulating shell; 101-Rectangular groove; 102-First through hole; 103-Outer convex bulge; 104-Blind hole; 105-Axial concave area; 106-Second through hole; 107-Separating rib; 2-Copper busbar; 3-First nut; 301-First internal threaded hole; 302-First shoulder; 303-First axial section; 304-Second axial section; 305-Circumferential convex rib; 4-Busket; 401-Smooth hole; 402-Circumferential groove; 5-Second nut; 501-Second internal threaded hole; 502-Second shoulder; 503-Third axial section; 504-Fourth axial section. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments: To achieve the purpose of this utility model, an injection-molded copper busbar structural component with a bushing nut is provided, comprising: an insulating shell 1; a copper busbar 2, which is a conductor made of copper and is mostly located inside the insulating shell 1; a bushing 4, which is fixed to the insulating shell 1 by contact with its side, and has an axially penetrating hole 401, which is a hole with a smooth inner wall and no threads, with the insulating shell 1 exposing both axial ends of the bushing 4; and a nut, which has an axially penetrating internal threaded hole, with one end of the nut fixed to the copper busbar 2. The nut includes a first nut 3 and a second nut 5. Both the insulating shell 1 and the copper busbar 2 are in contact with the side of the first nut 3 and expose both axial ends of the first nut 3. The copper busbar 2 exposes one end of the second nut 5, and the insulating shell 1 covers the other end of the second nut 5. The junction of the side of the first nut 3 and one axial end has a radially outwardly protruding circumferential rib 305, the top of which is in contact with the copper busbar 2.

[0020] The cross-sectional profile of any point of the circumferential convex rib 305 is a right trapezoid.

[0021] The beneficial effects of adopting the above technical solution are as follows: the circumferential ribs 305 on the side of the first nut 3 press against the copper busbar 2 to form a mechanical locking structure similar to a snap fastener, which significantly improves the anti-vibration and loosening ability of the nut and the copper busbar 2. At the same time, the design of the bushing 4 with its axial ends exposed not only achieves stable positioning of the bushing 4 through the insulating shell 1, but also retains the assembly function of the light hole 401, enhancing the overall structural reliability.

[0022] like Figure 2 , Figure 4 As shown, in some other embodiments of this utility model, the first nut 3 includes an axially arranged first axial segment 303 and a second axial segment 304. The diameter of the first axial segment 303 is smaller than the diameter of the second axial segment 304. A first shoulder 302 is formed at the junction of the first axial segment 303 and the second axial segment 304. The first shoulder 302 is perpendicular to the axis of the first nut 3. The first axial segment 303 and the first shoulder 302 are in contact with and fixed to the copper busbar 2. A circumferential rib 305 is located at one end of the first axial segment 303. The second nut 5 includes an axially arranged third axial segment 503 and a fourth axial segment 504. The diameter of the third axial segment 503 is smaller than the diameter of the fourth axial segment 504. A second shoulder 502 is formed at the junction of the third axial segment 503 and the fourth axial segment 504. The second shoulder 502 is perpendicular to the axis of the second nut 5. The third axial segment 503 and the second shoulder 502 are in contact with and fixed to the copper busbar 2.

[0023] The internal thread hole of the first nut 3 is the first internal thread hole 301, and the internal thread hole of the second nut 5 is the second internal thread hole 501.

[0024] The beneficial effects of adopting the above technical solution are: the segmented design of the first nut 3 and the first shoulder 302, combined with the second shoulder 502 of the second nut 5, form a multi-level axial limiting structure, which maximizes the contact area between the nut and the copper busbar 2, and further improves the fixing strength and assembly accuracy.

[0025] In some other embodiments of this utility model, the axial lengths of the first axial segment 303 and the third axial segment 503 are both less than the thickness of the copper busbar 2.

[0026] The beneficial effects of adopting the above technical solution are: the axial length of the first axial segment 303 and the third axial segment 503 is less than the thickness of the copper busbar 2, ensuring that the segmented structure of the nut is completely embedded inside the copper busbar 2, avoiding local stress concentration. One end of the nut will also not protrude excessively.

[0027] In some other embodiments of this utility model, the side of the bushing 4 has a concave circumferential groove 402.

[0028] The beneficial effects of adopting the above technical solution are: the circumferential groove 402 on the side of the bushing 4 increases the contact area and engagement depth with the injection molding material of the insulating shell 1, forming a mechanical anchor, which effectively prevents the bushing 4 from axially moving or circumferentially rotating in the insulating shell 1.

[0029] like Figure 3 As shown, in some other embodiments of this utility model, the front and back sides of the insulating shell 1 have axially recessed areas 105 extending in opposite directions, the shaft end of the bushing 4 is located on the bottom surface of the axially recessed area 105, and the two axially recessed areas 105 are connected by a first through hole 102, and the bushing 4 is fixed in contact with the first through hole 102.

[0030] The beneficial effects of adopting the above technical solution are as follows: the axially recessed areas 105 on both sides of the insulating shell 1 cooperate with the first through hole 102 to achieve bidirectional axial positioning of the bushing 4. At the same time, through the full contact between the inner wall of the through hole 102 and the bushing 4, the bushing 4's resistance to eccentric loads and structural stability are improved. In addition, the bushing 4 is also positioned further inward, making it less susceptible to damage from external impacts.

[0031] like Figure 2 , Figure 5 As shown, in some other embodiments of the present invention, the insulating shell 1 has a rectangular groove 101, which can accommodate a portion of the copper busbar 2, and the insulating shell 1 has a second through hole 106 on the bottom surface of the rectangular groove 101 that exposes the first nut 3.

[0032] The beneficial effects of adopting the above technical solution are: the rectangular groove 101 accurately accommodates a portion of the copper busbar 2 and restricts its displacement, and the second through hole 106 at its bottom directly exposes the first nut 3, providing an unobstructed assembly channel for external connectors while ensuring the insulation protection of the copper busbar 2.

[0033] In some other embodiments of this utility model, one side of the insulating shell 1 has an outer protrusion 103, the interior of the outer protrusion 103 is a blind hole 104, and the inner wall of the blind hole 104 is in contact with and fixed to the outer wall surface of the first nut 3.

[0034] The beneficial effects of adopting the above technical solution are: the blind hole 104 inside the outer convex bulge 103 is fully fitted with the outer wall of the first nut 3 to form a locally reinforced insulating wrapping structure, which can improve the tensile strength of the first nut 3 and also avoid the occurrence of weak areas in the insulation layer at the nut connection.

[0035] like Figure 7 As shown, in some other embodiments of the present invention, the insulating shell 1 has an outwardly protruding dividing rib 107, which is located between two adjacent copper busbars 2 and separates the copper busbars 2.

[0036] The beneficial effects of adopting the above technical solution are: the partition rib 107 establishes a physical isolation barrier between adjacent copper busbars 2, thereby improving the electrical safety when multiple copper busbars 2 are arranged in parallel.

[0037] like Figure 8 As shown, in some other embodiments of this utility model, the first nut 3 and the second nut 5 are located at both ends of the copper busbar 2, and the number of the first nut 3, the second nut 5, and the copper busbar 2 are equal.

[0038] The beneficial effects of adopting the above technical solution are: the design of placing the first nut 3 and the second nut 5 at both ends of the copper busbar 2 and matching their quantities achieves differentiated protection at both ends of the copper busbar 2, that is, the first nut 3 is fully exposed, while the second nut 5 is insulated at one end, which optimizes the insulation efficiency while meeting the multi-directional connection requirements.

[0039] In some other embodiments of this utility model, the bushing 4 does not contact the copper busbar 2, and the space between the bushing 4 and the copper busbar 2 is filled with the material of the insulating shell 1.

[0040] The beneficial effects of adopting the above technical solution are: the insulating shell 1 material completely fills the gap between the bushing 4 and the copper busbar 2, forming a double insulating isolation layer, completely eliminating the possibility of direct contact between metal parts, and ensuring that the pure mechanical positioning function of the bushing 4 is not subject to electrical interference.

[0041] To facilitate the display of the internal structure, Figure 8 The insulating shell 1 is hidden.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A molded copper busbar structural component with a bushing nut, characterized in that, include: Insulating shell; The copper busbar is located inside the insulating shell; The bushing is fixed to the insulating shell on its side, and the bushing has an axially penetrating light hole. The insulating shell exposes the axial ends of the bushing. A nut having an axially penetrating internal threaded hole, one end of which is fixed to a copper busbar; The nut includes a first nut and a second nut. The insulating shell and the copper busbar are in contact with the side of the first nut and exposed at both ends of the first nut. The copper busbar exposes one end of the second nut, and the insulating shell covers the other end of the second nut. The first nut has a radially outwardly protruding circumferential rib at the junction of its side and one side shaft end, and the top of the circumferential rib is in contact with the copper busbar.

2. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The first nut includes a first axial segment and a second axial segment arranged axially. The diameter of the first axial segment is smaller than the diameter of the second axial segment. A first shoulder is formed at the junction of the first axial segment and the second axial segment. The first shoulder is perpendicular to the axis of the first nut. The first axial segment and the first shoulder are in contact with and fixed to the copper busbar. The circumferential rib is located at one end of the first axial segment. The second nut includes a third axial segment and a fourth axial segment arranged axially. The diameter of the third axial segment is smaller than the diameter of the fourth axial segment. A second shoulder is formed at the junction of the third axial segment and the fourth axial segment. The second shoulder is perpendicular to the axis of the second nut. The third axial segment and the second shoulder are in contact with and fixed to the copper busbar.

3. The injection-molded copper busbar structural component with bushing nut according to claim 2, characterized in that: The axial lengths of the first and third axial segments are both less than the thickness of the copper busbar.

4. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The side of the bushing has a concave circumferential groove.

5. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The insulating shell has axially recessed areas extending in opposite directions on both sides. The axial end of the bushing is located on the bottom surface of the axially recessed area. A first through hole connects the two axially recessed areas. The bushing is fixed in contact with the surface of the first through hole.

6. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The insulating shell has a rectangular groove that can accommodate a portion of the copper busbar, and the insulating shell has a second through hole on the bottom surface of the rectangular groove that exposes the first nut.

7. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: One side of the insulating shell has a raised outer bulge, the interior of which is a blind hole, and the inner wall of the blind hole is in contact with and fixed to the outer wall of the first nut.

8. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The insulating shell has protruding dividing ribs, which are located between two adjacent copper busbars.

9. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The first nut and the second nut are located at both ends of the copper busbar, and the number of the first nut, the second nut, and the copper busbar are equal.

10. The injection-molded copper busbar structural component with bushing nut according to claim 1, characterized in that: The bushing does not contact the copper busbar, and the space between the bushing and the copper busbar is filled with the material of the insulating shell.

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