Terminal substrate of current-carrying connector, plug terminal and current-carrying connector

Abstract

The utility model belongs to the field of electric connectors, and particularly relates to a terminal substrate and a plugging terminal of a current-carrying connector, and the current-carrying connector. The terminal substrate of the current-carrying connector comprises a terminal base body, one end of the terminal base body longitudinally extends and is provided with plugging arms in pairs, a plugging space is formed between the two plugging arms, the other end of the terminal base body longitudinally extends to form a wiring arm, and the wiring arm is arranged on one side of the axis of the plugging space in a bias mode. According to the utility model, the terminal substrate of the current-carrying connector is improved, the wiring arm adopts a bias design, and the bias wiring arm reserves a space for connection of a cable, so that the thickness and the volume of the connector can be reduced, and the use requirement of the connector in an extremely narrow space is met.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connectors, and specifically relates to a terminal substrate, plug-in terminals, and current-carrying connector for a current-carrying connector. Background Technology

[0002] In practical applications of high-voltage connectors, the contacts are the key components. Existing terminals are mostly machined, which is not only costly and inefficient but also has limited current-carrying capacity. For the same contact area and current carrying capacity, surface-mount terminals, due to their manufacturing process, are significantly cheaper and lighter than round terminals. Furthermore, surface-mount terminals offer excellent current-carrying capacity and represent the mainstream development trend in the connector industry for the future.

[0003] Chinese Patent No. 2021232642587, Invention Title: A Plug-in Terminal and a Plug-in Terminal Mounting Structure, discloses a plug-in terminal including a plurality of stacked terminals arranged laterally. Each stacked terminal includes: a stacked base, and a pair of plug arms extending longitudinally from one end of the stacked base, the paired plug arms forming a plug-in space; a contact portion protruding towards the plug-in space and a protruding, elastic cantilever are sequentially provided along the free end of the plug arm to the stacked base; the plurality of plug-in spaces are arranged laterally to form a plug-in groove for mating with a plug-in terminal to achieve electrical connection. The accompanying drawings of this Chinese patent describe a plug-in terminal. Figures 1 to 3 A laminated terminal is provided, in which a connecting part is formed at the end of the laminated base away from the insertion space, and the axis of the connecting part and the axis of the insertion space are on the same plane and both are located in the middle of the laminated base. When the tail of the laminated terminal needs to be wired, due to the current carrying capacity requirement, the wire diameter of the tail cable is larger, and the connecting part is located in the center. The connection between the tail and the cable requires a large space, which makes it impossible to further reduce the gap in the connector volume, which does not meet the actual use requirements of extremely narrow space. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model improves the terminal substrate of the current-carrying connector by adopting an offset design for the wiring arm. The offset wiring arm provides space for cable connection, thereby reducing the thickness and volume of the connector and meeting the needs of the connector for use in extremely narrow spaces.

[0005] The technical solution of this utility model is as follows:

[0006] A terminal substrate for a current-carrying connector includes a terminal base, one end of which extends longitudinally and is provided with a pair of plug arms, forming a plug space between the two plug arms, and the other end of which extends longitudinally with a wiring arm, the wiring arm being offset to one side of the axis of the plug space.

[0007] Furthermore, the thickness of the connector arm is less than the thickness of the terminal base.

[0008] Furthermore, the terminal base is provided with a groove.

[0009] Furthermore, a beveled surface is provided on the terminal base near the connector arm. The beveled surface extends from the inner wall of the groove to the tail of the terminal base. The intersection of the beveled surface and the inner wall of the groove is far away from the axis of the insertion space, while the intersection of the beveled surface and the rear end of the terminal base is close to the axis of the insertion space.

[0010] Furthermore, one surface of the wiring arm along its length has at least one protrusion, and the other surface has at least one recess.

[0011] The insertion terminals of the current-carrying connector include the terminal substrates of the aforementioned current-carrying connector, with multiple terminal substrates stacked laterally and the wiring arms of all terminal substrates fixedly connected.

[0012] Furthermore, the connecting arms are fixed together as one unit by ultrasonic welding or induction welding.

[0013] Furthermore, the number of terminal substrates is three.

[0014] Furthermore, it contains multiple terminal substrates, which are divided into several terminal substrate groups according to the number of terminal substrates. The terminal substrates of each terminal substrate group are stacked together in the horizontal direction. There are spacer connecting pieces between adjacent terminal substrate groups, and gaps are formed between the plug arms of adjacent terminal substrate groups. The wiring arms of the terminal substrate group are connected to the spacer connecting pieces to form a whole.

[0015] A current-carrying connector includes a housing for mating and the aforementioned mating terminals disposed within the housing.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. This utility model improves the terminal base of the current-carrying connector by adopting an offset design for the wiring arm. The offset design provides installation space for the conductor of the cable, reduces the distance between the end of the conductor and the end of the terminal base, reduces the product size, and improves space utilization. This is conducive to the miniaturization design of the current-carrying connector and further meets the needs of the product for use in extremely narrow spaces.

[0018] 2. The present invention further improves the structure of the terminal substrate by setting grooves and beveled surfaces, so that the terminal substrate can meet the usage requirements of different production processes, such as integral injection molding or insertion.

[0019] 3. This utility model limits the thickness of the plug arms, so that gaps are formed between adjacent plug arms, which can reduce the temperature rise between the terminal substrates. Furthermore, the terminal substrates of this utility model can be used alone or in combination, and can be flexibly configured according to different current carrying requirements. When used in combination, the terminal substrates are stacked in the transverse direction, and the stacked terminals are welded into one piece, which has good integrity and meets better shock resistance requirements. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the terminal substrate of this utility model;

[0021] Figure 2 This is a front view schematic diagram of the terminal substrate of this utility model;

[0022] Figure 3 This is a top view schematic diagram of another terminal substrate of this utility model;

[0023] Figure 4 for Figure 2 Schematic diagram of the cross section of AA;

[0024] Figure 5 This is a front view schematic diagram of another terminal substrate of this utility model;

[0025] Figure 6 This is a three-dimensional schematic diagram of the plug-in terminal of this utility model;

[0026] Figure 7 This is a top view of the plug-in terminal of this utility model;

[0027] Figure 8 This is a three-dimensional schematic diagram of the plug-in terminal of the present invention, which includes multiple terminal substrate groups;

[0028] Figure 9 This is a three-dimensional schematic diagram of a current-carrying connector;

[0029] Figure 10 This is a comparison diagram of the connection between the plug-in terminal of this utility model and the copper conductor, and the connection between the two in the prior art.

[0030] In the diagram, 1 represents the terminal base, 10 represents the plug arm, 100 represents the plug space, and 11 represents the wiring arm.

[0031] 12 is a groove, 13 is a beveled surface, 110 is a protrusion, and 111 is a depression.

[0032] 2 represents the terminal substrate, 20 represents the terminal substrate assembly, 200 represents the spacer connector, and 201 represents the gap.

[0033] 4 is the first housing, 5 is the second housing, and 6 is the plug-in terminal. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0035] It should be noted that when a component is referred to as being "set on" or "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "fixed to" another component, or "fixedly connected" to another component, the fixing method can be detachable or non-detachable. When a component is considered to be "connected" or "rotatably connected" to another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used are for illustrative purposes only and do not represent the only possible implementation.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] In this invention, terms such as "first," "second," and "third" are used not to represent specific quantities or orders, but merely to distinguish names.

[0038] As electronic devices become smaller, the space available for connectors inside these devices is decreasing, thus placing more stringent requirements on the size of the connectors.

[0039] As a current-carrying connector, the wire diameter of its cable has certain requirements. The copper conductor end of the cable and the copper part of the current-carrying connector are generally crimped. The connection point of the tail of the copper part of the existing current-carrying connector is located on the axis of the copper part. When the copper conductor of the cable is crimped with the copper part of the current-carrying connector, a thicker shell is required to accommodate the copper part and the copper conductor, which affects the overall size of the current-carrying connector. Therefore, the copper part of the current-carrying connector needs to be improved.

[0040] Example 1

[0041] See Figure 1 and Figure 2As shown, the terminal substrate of the current-carrying connector includes a terminal base 1. One end of the terminal base 1 extends longitudinally and is provided with a pair of plug arms 10, forming a plug space 11 between the two plug arms 10. The other end of the terminal base 1 extends longitudinally with a wiring arm 11, which is biased on one side of the axis of the plug space.

[0042] This invention improves the terminal substrate of a current-carrying connector. The terminal substrate is made by stamping or cutting sheet metal and is thin. One end of the terminal base 1 is provided with a plug arm 10, and a plug space is formed between the plug arms. The plug space is used to accommodate the conductor. The opposite surfaces of the plug arms are provided with contact parts, which clamp and contact the conductor, achieving electrical connection and better clamping effect. Furthermore, the terminal base and the plug space are on the same axis, while the connector arm is offset and not on the same axis as the terminal base and the plug space. The offset connector arm provides more lateral space for the copper conductor of the cable, thereby reducing the thickness of the entire conductive unit after the copper conductor is connected to the terminal base. This is more conducive to the miniaturization design of the current-carrying connector and meets the miniaturization requirements of the current-carrying connector after the miniaturization of equipment.

[0043] The following explanation uses a comparison chart; see below. Figure 10 As shown in the figure, two different terminal substrates are given. The upper terminal substrate has its connecting arm on the same straight line as the axis of the insertion space. When it is connected to the copper conductor of the cable, the distance between the upper end of the copper conductor and the lower end of the terminal substrate is represented by H3. The lower terminal substrate has its connecting arm not on the same straight line as the axis of the insertion space, but offset below the axis. When it is connected to the copper conductor of the cable, the distance between the upper end of the copper conductor and the lower end of the terminal substrate is represented by H4. It is clear that H3 is greater than H4. Therefore, the offset connecting arm is beneficial to the miniaturization design of current-carrying connectors.

[0044] The thickness of the connector arm can be the same as the thickness of the terminal base; further preferred options are given here, see [link to relevant documentation]. Figure 3 As shown, the thickness of the plug arm 10 is less than the thickness of the terminal base 1, and the thickness of the plug arm is within... Figure 3 In the diagram, H1 represents the thickness of the terminal substrate. Figure 3 H2 is used to represent the lateral stacking of multiple terminal substrates, see [reference needed]. Figure 5 As shown, a gap is formed between adjacent plug arms, which facilitates gas flow and thus reduces the temperature rise between the stacked plates.

[0045] See Figure 6As shown, the terminal base 1 is provided with a groove 12. The terminal base is used to be fixedly connected with the housing of the current-carrying connector. When the terminal base is connected to the housing of the current-carrying connector, the housing of the current-carrying connector is formed in the groove, forming a limit along the length direction of the terminal base, so that the terminal base cannot be separated from the housing of the current-carrying connector, thereby improving the connection reliability of the two.

[0046] Further, see Figure 1 and Figure 2 As shown, a beveled surface 13 is provided on the terminal base 1 near the terminal arm 11. The beveled surface 13 extends from the inner wall of the groove to the tail of the terminal base 1. The intersection of the beveled surface and the inner wall of the groove is far away from the axis of the insertion space, and the intersection of the beveled surface and the rear end of the terminal base is close to the axis of the insertion space. The beveled surface forms an inclined surface on the terminal base, and the highest point is located at the intersection of the beveled surface and the inner wall of the groove. The beveled surface can provide guidance. When the terminal base is used to mate with the current-carrying connector housing, the beveled surface can provide guidance to facilitate the mating. After mating, the hook formed by the groove and the beveled surface can be used to lock the terminal base in the length direction, ensuring the reliability of the connection between the terminal base and the current-carrying connector housing and preventing the terminal base from falling off.

[0047] See Figure 4 As shown, one surface of the terminal arm 11 along its length is provided with at least one protrusion 110, and the other surface is provided with at least one recess 111. In this embodiment, one surface of the terminal arm is provided with two protrusions, and the other surface is provided with two recesses. Specifically, the protrusions are spherical convex hulls, and the recesses are spherical pits. When multiple terminal substrates are stacked laterally, the protrusions and recesses of adjacent terminal substrates cooperate to ensure the positioning accuracy of adjacent terminal substrates, thereby ensuring that the stacked terminal substrates are in the same reference plane.

[0048] Example 2

[0049] See Figure 7As shown, the plug-in terminals of the current-carrying connector include terminal substrates 2 of the current-carrying connector. Multiple terminal substrates 2 are stacked laterally, and the wiring arms 11 of all terminal substrates 2 are fixedly connected. The number of terminal substrates is set according to the actual current-carrying requirements of the current-carrying connector. One terminal substrate can be used as a plug-in terminal, or multiple terminal substrates can be stacked laterally to form a wide and thick current-carrying connector. Two terminal substrates can be stacked laterally, three terminal substrates can be stacked laterally, four terminal substrates can be stacked laterally, etc. The wiring arms of the plug-in terminals obtained by the lateral stacking are fixedly connected, so that the wiring arms of multiple terminal substrates form a whole, which improves the current-carrying capacity. At the same time, the plug-in arms of multiple terminal substrates have multiple contact points with the conductor located in the plug-in space, which reduces the contact resistance of the plug-in terminals.

[0050] Furthermore, the terminal arm 11 is fixed into a whole by ultrasonic welding or induction welding. The connection of the terminal arms into a whole through the above process is beneficial to improving the current carrying capacity of the plug terminal.

[0051] Preferably, the number of terminal substrates 2 is 3. In this embodiment, three terminal substrates are stacked to form a module.

[0052] See Figure 8 As shown, the device includes multiple terminal substrates 2, which are divided into several terminal substrate groups 20 according to the number of terminal substrates 2. The terminal substrates 2 of each terminal substrate group are stacked together in the horizontal direction. A spacer connecting piece 200 is provided between adjacent terminal substrate groups 20. A gap 201 is formed between the plug arms of adjacent terminal substrate groups. The wiring arms of the terminal substrate groups are connected to the spacer connecting piece as a whole. The gap between adjacent terminal substrate groups is a heat dissipation channel 201, which is conducive to the heat dissipation of the high current of the current-carrying connector. Specifically, this embodiment includes 6 terminal substrates, divided into two groups. Each group has 3 terminal substrates stacked together to form a terminal substrate group. Then the terminal substrate groups are stacked together. A spacer connecting piece is provided between the wiring arms of the two groups. The spacer connecting piece is made of the same material as the wiring arms. The wiring arms and spacer connecting pieces of the two terminal substrate groups are welded together as a whole.

[0053] Example 3

[0054] See Figure 9As shown, the current-carrying connector includes a housing for mating and the aforementioned plug-in terminals 6. The plug-in terminals 6 are disposed within the housing. Specifically, the housing in this embodiment includes a first housing 4 and a second housing 5, which are mated together. The plug-in terminals in this embodiment are disposed within the first housing and include four plug-in terminals. Two plug-in terminals are formed by stacking three terminal substrates, and the other two plug-in terminals are formed by stacking a single terminal substrate. The plug-in terminals formed by stacking three terminal substrates are located near the left and right ends of the first housing, and the plug-in terminals formed by stacking a single terminal substrate are located in the middle of the other two multi-layer plug-in terminals.

[0055] In summary, this utility model has the following beneficial effects:

[0056] 1. This utility model improves the terminal base of the current-carrying connector by adopting an offset design for the wiring arm. The offset design provides installation space for the conductor of the cable, reduces the distance between the end of the conductor and the end of the terminal base, reduces the product size, and improves space utilization. This is conducive to the miniaturization design of the current-carrying connector and further meets the needs of the product for use in extremely narrow spaces.

[0057] 2. The present invention further improves the structure of the terminal substrate by setting grooves and beveled surfaces, so that the terminal substrate can meet the usage requirements of different production processes, such as integral injection molding or insertion.

[0058] 3. This utility model limits the thickness of the plug arms, so that gaps are formed between adjacent plug arms, which can reduce the temperature rise between the terminal substrates. Furthermore, the terminal substrates of this utility model can be used alone or in combination, and can be flexibly configured according to different current carrying requirements. When used in combination, the terminal substrates are stacked in the transverse direction, and the stacked terminals are welded into one piece, which has good integrity and meets better shock resistance requirements.

[0059] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A terminal substrate for a current-carrying connector, characterized in that: The device includes a terminal base, one end of which extends longitudinally and is provided with a pair of plug arms, forming a plug space between the two plug arms. The other end of the terminal base extends longitudinally and is provided with a wiring arm, which is offset to one side of the axis of the plug space.

2. The terminal substrate of the current-carrying connector according to claim 1, characterized in that: The thickness of the plug arm is less than the thickness of the terminal base.

3. The terminal substrate of the current-carrying connector according to any one of claims 1 or 2, characterized in that: The terminal base is provided with a groove.

4. The terminal substrate of the current-carrying connector according to claim 3, characterized in that: A beveled surface is provided on the terminal base near the connector arm. The beveled surface extends from the inner wall of the groove to the tail of the terminal base. The intersection of the beveled surface and the inner wall of the groove is far away from the axis of the insertion space, while the intersection of the beveled surface and the rear end of the terminal base is close to the axis of the insertion space.

5. The terminal substrate of the current-carrying connector according to claim 4, characterized in that: The wiring arm has at least one protrusion on one surface along its length and at least one recess on the other surface.

6. The mating terminals of a current-carrying connector, comprising the terminal substrate of the current-carrying connector according to any one of claims 1-5, characterized in that: Multiple terminal substrates are stacked horizontally, and the terminals of all terminal substrates are fixedly connected.

7. The mating terminal of the current-carrying connector according to claim 6, characterized in that: The connecting arms are fixed together by ultrasonic welding or induction welding.

8. The mating terminal of the current-carrying connector according to claim 6, characterized in that: The number of terminal substrates is 3.

9. The mating terminal of the current-carrying connector according to claim 6, characterized in that: It contains multiple terminal substrates, which are divided into several terminal substrate groups according to the number of terminal substrates. The terminal substrates of each terminal substrate group are stacked together in the horizontal direction. There are spacer connecting pieces between adjacent terminal substrate groups. A gap is formed between the plug arms of adjacent terminal substrate groups. The wiring arms of the terminal substrate group are connected to the spacer connecting pieces to form a whole.

10. A current-carrying connector, comprising a mating housing, characterized in that: It also includes the plug-in terminal as described in any one of claims 6-9, wherein the plug-in terminal is disposed within the housing.

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