Secondary molding injection molding copper bar

Abstract

The utility model provides a secondary molding injection molding copper bar, which relates to the technical field of injection molding copper bars, and comprises copper bars which are mutually overlapped and are not contacted, the copper bars are fixed through a plurality of first injection molding pieces in an injection molding manner, and every two adjacent first injection molding pieces are connected and fixed through a reinforcing rib. And the copper bar is sealed between the two first injection molding pieces at the end part of the copper bar by pouring a second injection molding piece. According to the utility model, the copper bar can be positioned through the first injection molding piece, and then the first injection molding piece is limited through the reinforcing ribs, so that the problems of deformation and displacement of the copper bar can be effectively prevented; through the step structure at the combination position of the first column and the second column, the gap distance between the first column and the second column is increased, the problems that the creep distance at the position is not enough when the plastic-coated copper bar is in direct contact with the outside, and voltage-withstanding sparking is likely to occur are solved, and the safety performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of injection molding copper bar, especially a secondary forming injection molding copper bar. BACKGROUND

[0002] New energy vehicles are more and more widely used, and lightweight vehicle body is considered as a key problem in the industry, so the use of injection molding copper bar is inevitable. When the existing laminated copper bar is injection molded, there are mainly two schemes for positioning: one is to connect two copper bars together through adhesive, and the adhesive area is a heterogeneous area after the injection molding layer is wrapped, which can easily affect the electrical properties and structural strength of the laminated copper bar; the other is to position through the mounting hole at the end of the laminated copper bar.

[0003] In the current design, a better secondary injection molding is used to injection mold the copper bar, which fixes the relative position between the copper bars by first injection molding at both ends of the copper bar, and then wraps the copper bar by secondary injection molding. In the actual injection molding process, due to the pressure of injection molding, the copper bar bending place may be deformed or deviated due to the pressure, which can further cause the distance between the two copper bars to be uncontrollable during secondary injection molding, and the wall thickness of the secondary injection molding layer outside the copper bar cannot meet the requirements, affecting the safety performance of the product. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a secondary forming injection molding copper bar to solve the problem of displacement or bending of the copper bar during injection molding.

[0005] Based on the technical problems existing in the background art, the utility model provides a secondary forming injection molding copper bar, which comprises copper bars that are stacked with each other and do not contact each other. The two ends of the copper bars are injection molded and fixed by two first injection molding parts, the two first injection molding parts are connected and fixed by a reinforcing rib, and the two first injection molding parts are sealed with the copper bars by pouring a second injection molding part.

[0006] Preferably, the first injection molding part has a stepped outer ring and an inner ring, and the two ends of the second injection molding part can wrap the inner ring of the first injection molding part.

[0007] Preferably, the outer ring side wall of the first injection molding part and the outer side wall of the second injection molding part are in the same plane.

[0008] Preferably, the outer wall of the inner ring is provided with a plurality of outwardly protruding clamping strips, and the second injection molding part is provided with clamping grooves corresponding to the clamping strips.

[0009] Preferably, one side of the first injection molding part away from the other first injection molding part is provided with a protective boss.

[0010] Preferably, the two ends of the copper bar protrude out of the first injection molding part.

[0011] Compared with the prior art, the injection molding copper bar of the secondary molding adopts the technical scheme, and the following technical effects are achieved:

[0012] In the utility model, the copper bar can be positioned by the first injection molding part, and the first injection molding part is limited by the reinforcing rib, so that the deformation and displacement of the copper bar can be effectively prevented; the gap distance between the first column and the second column is increased by the stepped structure at the combined position of the first injection and the second injection, so that the creepage distance at the position where the plastic-coated copper bar directly contacts with the outside is avoided, the problem of easy pressure sparking is avoided, and the safety performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall installation structure of the utility model;

[0014] Figure 2 It is a front view of the structure of the copper bar and the first injection molding part of the utility model;

[0015] Figure 3 It is a back view of the structure of the copper bar and the first injection molding part of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the first injection molding part and the reinforcing rib of the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the second injection molding part of the utility model.

[0018] In the drawings: 1, copper bar; 2, first injection molding part; 3, reinforcing rib; 4, second injection molding part; 21, outer ring; 22, inner ring; 23, clamping strip; 41, clamping groove; 24, protection boss. DETAILED DESCRIPTION

[0019] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0020] In the present application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0021] Embodiment

[0022] Please refer to Figures 1-5 , the utility model provides a secondary forming's injection molding copper bar, including mutually superimposed and not contact copper bar 1, copper bar 1 both ends are fixed through two first injection molding parts 2 injection molding respectively, only adopt two first injection molding parts 2 fixed in the application, two first injection molding parts 2 cooling fixed, can fix the interval between copper bar 1, two first injection molding parts 2 between through the reinforcing rib 3 connection fixed, two first injection molding parts 2 between copper bar 1 still be in the naked state, its reinforcing rib 3 can limit the relative position between two first injection molding parts 2, make the relative position between two first injection molding parts 2 fixed, copper bar 1 in the end is fixed in first injection molding part 2, also can receive the fixed effect of reinforcing rib 3, then copper bar 1 will play the role of strengthening, then will not occur bending and displacement, two first injection molding parts 2 between again through the pouring second injection molding part 4 seal copper bar 1. In the scheme, only two first injection molding parts 2 are used, and are arranged at both ends of the copper bar 1. If the length of the copper bar 1 is relatively long, a plurality of first injection molding parts 2 can be arranged at the middle of the copper bar 1 to strengthen. The adjacent first injection molding parts 2 are fixed by the reinforcing ribs 3.

[0023] In specific embodiments, reference is made to Figure 2 , Figure 3 , Figure 4 , the first injection molding part 2 has a stepped outer ring 21 and an inner ring 22, and the second injection molding part 4 can wrap the inner ring 22 of the first injection molding part 2. In the present application, the circumference of the outer ring 21 is greater than that of the inner ring 22. When the second injection molding part 4 is poured, it can wrap the inner ring 22. At this time, the gap between the second injection molding part 4 and the first injection molding part 2 will be bent, which can improve the sealing performance to a certain extent and increase the contact area between the first injection molding part 2 and the second injection molding part 4.

[0024] In specific embodiments, reference is made to Figure 2 , Figure 4 , the side wall of the outer ring 21 of the first injection molding part 2 and the outer side wall of the second injection molding part 4 are in the same plane, which can keep the flatness of the first injection molding part 2 and the second injection molding part 4 after connection.

[0025] In specific embodiments, referring to Figure 2 , Figure 3 , Figure 4 , the outer wall of the inner ring 22 is provided with a plurality of outwardly convex clamping strips 23, and the second injection molding part 4 is provided with clamping grooves 41 corresponding to the clamping strips 23, the clamping grooves 41 being capable of being inserted into the clamping strips 23, thereby further reinforcing the fastening degree between the first injection molding part 2 and the second injection molding part 4.

[0026] In specific embodiments, referring to Figure 3 , Figure 4 , the side of the first injection molding part 2 away from the other first injection molding part 2 is provided with a protective boss 24, which can increase the creepage distance of the end of the copper bar, the creepage distance being affected by the length of the protective boss 24.

[0027] In specific embodiments, referring to Figure 1 , both ends of the copper bar 1 are exposed outside the first injection molding part 2, and both ends of the copper bar 1 have pins for conducting electricity, which need to be exposed outside the first injection molding part 2 to facilitate the installation of the copper bar.

[0028] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A two-shot overmolded copper busbar, characterized in that, The copper bar (1) is overlapped and not contacted, and the copper bar (1) is fixed by a plurality of first injection parts (2), the two adjacent first injection parts (2) are connected and fixed by a reinforcing rib (3), and the two first injection parts (2) at the end of the copper bar (1) are sealed by pouring a second injection part (4).

2. The overmolded injection molded copper busbar of claim 1, wherein, The first injection part (2) at the two ends of the copper bar has a stepped outer ring (21) and an inner ring (22), and the second injection part (4) can wrap the inner ring (22) of the first injection part (2) inside.

3. The overmolded injection molded copper busbar of claim 2, wherein, The side wall of the outer ring (21) of the first injection part (2) at the two ends of the copper bar is in the same plane as the outer side wall of the second injection part (4).

4. The overmolded injection molded copper busbar of claim 2, wherein, The outer surface of the first injection part (2) at the middle of the copper bar is in the same plane as the outer surface of the inner ring (22).

5. The overmolded injection molded copper busbar of claim 2, wherein, The outer wall of the inner ring (22) is provided with a plurality of outwardly protruding clamping strips (23), and the second injection part (4) is provided with a clamping groove (41) corresponding to the clamping strip (23).

6. The overmolded injection molded copper busbar of claim 1, wherein, The side of the first injection part (2) away from the other first injection part (2) is provided with a protection boss (24).

7. The overmolded injection molded copper busbar of claim 1, wherein, The two ends of the copper bar (1) are exposed to the first injection part (2).

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