Power connector

Abstract

The utility model provides a power supply connector, which comprises an insulating body and at least one power supply terminal pair, the insulating body is provided with a terminal groove extending along the front and back direction, and the power supply terminal pair is fixed in the terminal groove of the insulating body. Each power supply terminal pair comprises an upper-row terminal assembly and a lower-row terminal assembly, contact arms of the upper-row terminal assembly and the lower-row terminal assembly are oppositely arranged along the height direction, and each of the upper-row terminal assembly and the lower-row terminal assembly comprises a first terminal and a second terminal; each of the first terminal and the second terminal is provided with a base body part and at least one contact arm formed by forwards extending from the base body part; the width of the base parts of the first and second terminals in the transverse direction is not less than 10% of the width of the insulating body in the transverse direction. The power supply connector can effectively increase conductor paths in a limited width range and restrain heating of the power supply terminals.

Description

Technical Field

[0001] This utility model relates to a power connector. Background Technology

[0002] Traditional power connectors have an insulating body and several power terminal pairs fixed within the insulating body. Each power terminal has a base portion and at least one elastic contact arm extending forward from the base portion. When the power terminal transmits a larger current, the power terminal is prone to excessive heat generated by the current impedance due to the limited conductor path, which exceeds the temperature range that the power connector can withstand and makes it difficult to meet the usage requirements of high-power environments.

[0003] In view of this, it is necessary to improve the existing power connectors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a power connector that can increase conductor passage within a limited width range and suppress heat generation at the power terminals.

[0005] To achieve the above-mentioned utility model objectives, this utility model provides a power connector, which includes an insulating body and at least one power terminal pair. The insulating body has a terminal groove extending in a front-to-back direction. The power terminal pair is fixed in the terminal groove of the insulating body. Each power terminal pair includes an upper row terminal assembly and a lower row terminal assembly with contact arms arranged opposite each other in the height direction. Each of the upper row terminal assembly and the lower row terminal assembly includes a first terminal and a second terminal. Each of the first terminal and the second terminal has a base portion and at least one contact arm extending forward from the base portion. The width of the base portion of the first and second terminals in the lateral direction is not less than 10% of the width of the insulating body in the lateral direction.

[0006] As a further improvement of this utility model, the width of the base portion of the first and second terminals in the transverse direction is not less than 30% of the width of the insulating body in the transverse direction.

[0007] As a further improvement of this utility model, the contact arms of each of the upper and lower terminal assemblies are arranged in at least two groups side by side in the lateral direction, and the distance between two adjacent groups of contact arms is greater than the distance between two adjacent contact arms in the same group.

[0008] As a further improvement of this utility model, the contact arms of each of the first terminal and the second terminal are arranged in at least two groups side by side in the lateral direction, and the distance between two adjacent groups of contact arms in the lateral direction is greater than the distance between two adjacent contact arms in the same group.

[0009] As a further improvement of this utility model, each of the terminal slots is provided with at least one partition wall, which separates two adjacent sets of contact arms in the lateral direction.

[0010] As a further improvement of this utility model, the insulating body has a transverse wall extending in the transverse direction, which divides the terminal slot into two groups corresponding to the upper row of terminal assemblies and the lower row of terminal assemblies respectively. Each of the partition walls extends in the front-back direction and has a connecting portion connected to the transverse wall.

[0011] As a further improvement of this utility model, the second terminal is provided with a recessed groove formed backward, the groove being formed backward from the front end of the base portion, and the connecting portion being inserted backward into the groove.

[0012] As a further improvement of this utility model, each of the spacers includes a first spacer located on the front side of the connecting portion and a second spacer located on the rear side of the connecting portion. The second spacer is inserted rearward into the spacer space in the height direction of the base portion of the corresponding first and second terminals, so that the base portion is clamped in the height direction by two adjacent of the second spacer, the transverse wall, the top wall of the insulating body, and the bottom wall of the insulating body.

[0013] As a further improvement of this utility model, in the same terminal assembly, at least a portion of the contact arm of the second terminal extends into the gap between two adjacent contact arms of the first terminal.

[0014] To achieve the above-mentioned utility model objectives, this utility model also provides a power connector, which includes an insulating body and at least one power terminal pair. The insulating body has a power transmission cavity for receiving the power terminal pair. The power terminal pair is fixed in a terminal slot of the insulating body. The power transmission cavity is connected to the terminal slot. Each power terminal pair includes an upper row terminal assembly and a lower row terminal assembly with contact arms arranged opposite each other in the height direction. Each of the upper row terminal assembly and the lower row terminal assembly includes a first terminal and a second terminal. Each of the first terminal and the second terminal has a base portion and at least one contact arm extending forward from the base portion. The width of the base portion of the first and second terminals in the lateral direction is not less than 15% of the width of the power transmission cavity in the lateral direction.

[0015] The beneficial effects of this utility model are as follows: By setting the width of the base portion of the first and second terminals in the lateral direction to be no less than 10% of the width of the insulating body in the lateral direction or no less than 15% of the width of the power transmission cavity in the lateral direction, the relative area of ​​each terminal assembly in the lateral direction is increased. This effectively increases the conductive path of the terminal assembly within a limited width range, suppresses the heating of the power terminals, and enhances the current carrying capacity of the power connector, thereby meeting the requirements of high-power applications. Attached Figure Description

[0016] Figure 1 This is a three-dimensional assembly diagram of the power connector of this utility model.

[0017] Figure 2 yes Figure 1 Another view of the power connector shown.

[0018] Figure 3 yes Figure 1 An exploded 3D view of the power connector shown.

[0019] Figure 4 yes Figure 3 An exploded view of a terminal assembly of the power connector shown.

[0020] Figure 5 yes Figure 4 A further exploded view of the terminal assembly shown.

[0021] Figure 6 yes Figure 3 A top view of one terminal assembly of the power connector shown.

[0022] Figure 7 yes Figure 3 Top view of the first terminal in the upper terminal assembly of the power connector shown.

[0023] Figure 8 yes Figure 3 A partial enlarged view of the insulating body of the power connector shown.

[0024] Figure 9 yes Figure 3 A cross-sectional view of the insulating body of the power connector shown.

[0025] Figure 10 yes Figure 1 The power connector shown is a cross-sectional view.

[0026] Figure 11 yes Figure 1 Another cross-sectional view of the power connector shown. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0028] Please refer to Figures 1 to 11 The present invention is shown as a preferred embodiment of the power connector 100. In some embodiments of the present invention, the power connector 100 includes an insulating body 1 and at least one power terminal pair 2, wherein the power terminal pair 2 is fixed in the insulating body 1.

[0029] For ease of explanation, when describing the power connector 100 below, we will consider the mating direction of the power connector 100 as the front-back direction, one direction perpendicular to the front-back direction as the lateral direction, and another direction perpendicular to the front-back direction as the height direction.

[0030] Please refer to Figures 1 to 3 , Figures 8 to 11 As shown, the insulating body 1 has a terminal slot 101 extending in the front-rear direction, and the power terminal pair 2 is fixed in the terminal slot 101 of the insulating body 1.

[0031] like Figure 8 and Figure 9 As shown, in this utility model, each terminal slot 101 is provided with at least one partition wall 102 to divide each terminal slot 101 into at least two terminal channels 1012. In the embodiment shown in this application, each terminal slot 101 is provided with two partition walls 102 to divide one terminal slot 101 into three terminal channels 1012. In other embodiments, each terminal slot 101 may also be divided into two, four or more terminal channels 1012 by partition walls 102.

[0032] The insulating body 1 has a transverse wall 103 extending in the transverse direction, which divides the terminal slot 101 into upper and lower groups. Each of the spacer walls 102 extends in the front-back direction and has a connecting portion 1021 connected to the transverse wall 103.

[0033] Each of the spacers 102 includes a first spacer 1022 located in front of the connecting portion 1021 and a second spacer 1023 located behind the connecting portion 1021. The first spacer 1022 is integrally connected to the top wall 104 or the bottom wall 105 of the insulating body 1.

[0034] Furthermore, the front end of the second spacing portion 1023 is connected to the connecting portion 1021 and has a rearwardly extending cantilever structure. The second spacing portion 1023 has a vertically placed flat plate structure, that is, its width in the lateral direction is smaller than its height in the vertical direction.

[0035] like Figure 9 and Figure 11 As shown, the first spacer 1022 has a guide surface 1024 on the front side and an extension surface 1025 on the rear side. The guide surface 1024 is inclined at an angle to the horizontal plane, and the extension surface 1025 is parallel to the horizontal plane. The extension length of the guide surface 1024 in the front-rear direction is greater than the extension length of the extension surface 1025 in the front-rear direction, so as to achieve a better guiding effect on the front side, thereby adapting to the increase in the width of the base portion 202.

[0036] In the height direction, the distance between the extension surface 1025 and the transverse wall 103 is smaller than the distance between the corresponding second interval 1023 and the transverse wall 103, thereby increasing the arc creep distance at the corresponding position of the contact arm 201 of the power terminal and ensuring the safety and reliability of the electrical connection.

[0037] The rear end face of the first spacing portion 1022 is located between the front end face and the rear end face of the connecting portion 1021 in the front-back direction. The second spacing portion 1023 located on the upper side extends rearward to be flush with the top wall 104. The rear end face of the transverse wall 103 is flush with the rear end face of the top wall 104. The second spacing portion 1023 located on the lower side extends rearward to be flush with the bottom wall 105.

[0038] The transverse wall 103 has a notch 1031 located on its lower side. The notch 1031 is formed by a forward indentation from the rear end of the transverse wall 103. In the front-back direction, the notch 1031 is located on the rear side of the bottom wall 105.

[0039] Please refer to Figures 1 to 7 and Figures 10 to 11 As shown, each power terminal pair 2 includes an upper row terminal assembly 2a and a lower row terminal assembly 2b arranged opposite each other along the height direction with contact arms 201. The transverse wall 103 divides the terminal slot 101 into two groups corresponding to the upper row terminal assembly 2a and the lower row terminal assembly 2b, respectively.

[0040] Each of the upper terminal assembly 2a and the lower terminal assembly 2b includes a first terminal 21 and a second terminal 22. Each of the first terminal 21 and the second terminal 22 has a base portion 202 and at least one of the contact arms 201 extending forward from the base portion 202.

[0041] In this embodiment, the base portion 202 has an interference portion 2021 fixed to the insulating body 1, and the interference portion 2021 is provided on both sides of the base portion 202 in the lateral direction.

[0042] Each of the upper row terminal assemblies 2a and the lower row terminal assemblies 2b is referred to as a terminal assembly, each of the first and second terminals 21, 22 is referred to as a power terminal, and each power terminal has an overall sheet-like structure extending in the lateral direction. In the present utility model, the base portion 202 is the portion where each power terminal has the maximum width in the lateral direction.

[0043] In the present utility model, in each terminal assembly, the base portion 202 of the first terminal 21 is disposed close to the lateral wall 103 in the height direction, and the base portion 202 of the second terminal 22 is disposed away from the lateral wall 103 in the height direction.

[0044] In this embodiment, each of the first terminal 21 and the second terminal 22 further has an extension portion 203 bent and extended from the base portion 202, and the extension portion 203 is located at the rear side of the base portion 202. In addition, each of the first and second terminals 21, 22 further has a welding leg 204 extending downward from the extension portion 203, and the extending direction of the welding leg 204 is perpendicular to the extending direction of the contact arm 201.

[0045] As Figure 4 and Figure 10 shown, the width W1 of the base portion 202 of the first and second terminals 21, 22 in the lateral direction is not less than 10% of the width W2 of the insulating body 1 in the lateral direction. Thus, by making the width of the base portion 202 of the power terminal wider in the lateral direction, the conductor area is increased, and further the conductive path of the terminal assembly is effectively increased, and the situation of the power terminal generating heat is inhibited.

[0046] Furthermore, the width W1 of the base portion 202 of the first and second terminals 21, 22 in the lateral direction is not less than 20% of the width W2 of the insulating body 1 in the lateral direction, so as to increase the cross-sectional area of the power terminal, reduce the resistance, reduce the heat generation, and effectively improve the current-carrying capacity of the power terminal.

[0047] Even further, in a preferred embodiment of the present utility model, the width W1 of the base portion 202 of the first and second terminals 21, 22 in the lateral direction is not less than 30% of the width W2 of the insulating body 1 in the lateral direction. By maximizing the width of the power terminal in the lateral direction, the conductive path is increased, and the situation of the power terminal generating heat is effectively inhibited.

[0048] Refer Figures 3 to 6 As shown, the contact arms 201 of each of the upper row terminal assembly 2a and the lower row terminal assembly 2b are arranged in at least two groups side by side in the lateral direction, such as... Figure 6 As shown, each set of contact arms 201 in Figure 6 The middle is marked as G, and the spacing between two adjacent sets of contact arms 201 is greater than the spacing between two adjacent contact arms 201 in the same set.

[0049] This application increases the conductor area of ​​each terminal assembly in the lateral direction by configuring each terminal assembly to have a base portion 202 and at least two sets of contact arms 201 extending forward from the front end of the base portion 202, thereby effectively increasing the conductive path of the terminal assembly and suppressing the heating of the power terminal.

[0050] In this embodiment, the partition wall 102 separates two adjacent sets of contact arms 201 in the lateral direction. Specifically, the first partition portion 1022 separates two adjacent sets of contact arms 201 of the same terminal assembly in the lateral direction. The notch 1031 is provided at a position corresponding to the bent portion of the second terminal 22 of the lower row terminal assembly 2b, thereby making the assembly process smoother and preventing the bent portion from interfering with the lateral wall 103.

[0051] Please refer to Figure 5 and Figure 7 As shown, the contact arms 201 of each of the first terminal 21 and the second terminal 22 are arranged in at least two groups side by side in the lateral direction, and each group of contact portions 201 in each power terminal is... Figure 7 In, it is marked as g, such as Figure 7 As shown, the distance D1 between two adjacent sets of contact arms 201 in the lateral direction is greater than the distance D2 between two adjacent contact arms 201 in the same set, so that after the terminal assembly is formed, the contact arms 201 of the first and second terminals 21 and 22 can be arranged into at least two sets and can be cross-arranged to achieve balanced insertion and extraction forces.

[0052] In addition, in some embodiments of this utility model, the second terminal 22 is provided with a recessed groove 205, which is formed by recessing backward from the front end of the base portion 202, and the connecting portion 1021 is inserted into the groove 205.

[0053] In the embodiment shown in this utility model, the first terminal 21 also has a groove 205 formed by recessing from the front end of its base portion 202 to the rear, and the first spacer portion 1022 is inserted rearward into the groove 205 of the first terminal 21 to further limit the power terminal in the lateral direction.

[0054] The second spacer 1023 is inserted rearward into the space between the base portions 202 of the corresponding first and second terminals 21 and 22 in the height direction, so that the base portions 202 are clamped in the height direction by two adjacent of the second spacer 1023, the transverse wall 103, the top wall 104 of the insulating body 1, and the bottom wall 105 of the insulating body 1, thereby further limiting the power terminals in the height direction.

[0055] In the upper terminal assembly 2a, the base portion 202 of the first terminal 21 is sandwiched between the top wall of the insulating body 1 and the second spacer portion 1023 in the height direction, and the base portion 202 of the second terminal 22 in the upper terminal assembly 2a is sandwiched between the second spacer portion 1023 and the transverse wall 103 in the height direction.

[0056] In the lower terminal assembly 2b, the base portion 202 of the first terminal 21 is sandwiched between the second spacer portion 1023 and the bottom wall of the insulating body 1 in the height direction, and the base portion 202 of the second terminal 22 in the lower terminal assembly 2b is sandwiched between the second spacer portion 1023 and the transverse wall 103 in the height direction.

[0057] In addition, in some embodiments of the power connector 100 of this utility model, the insulating body 1 has a power transmission cavity 10 for accommodating the power terminal pair 2, and the power transmission cavity 10 is connected to the terminal slot 101, such as... Figure 10 As shown, the width W1 of the base portion 202 of the first and second terminals 21 and 22 in the lateral direction is not less than 15% of the width W3 of the power transmission cavity 10 in the lateral direction.

[0058] Thus, by setting the width W1 of the base portion 202 of the power terminal in the lateral direction to be no less than 15% of the width W3 of the power transmission cavity in the lateral direction, the power connector 100 of this utility model can provide a single power terminal as wide as possible within the limited width range of the power transmission cavity 10, thereby increasing the conductive path and suppressing the heating of the power terminal.

[0059] Furthermore, the width W1 of the base portion 202 of the first and second terminals 21 and 22 in the lateral direction is not less than 30% of the width W3 of the power transmission cavity 10 in the lateral direction, thereby providing a wider range of single power terminals within the limited width of the power transmission cavity 10, and thus more effectively improving the current carrying capacity of the power terminals.

[0060] Furthermore, the width W1 of the base portion 202 of the first and second terminals 21 and 22 in the lateral direction is not less than 45% of the width W3 of the power transmission cavity 10 in the lateral direction, so that a single power terminal can be provided as wide as possible within the limited width range of the power transmission cavity 10, thereby more effectively improving the current carrying capacity of the power terminal.

[0061] In this embodiment, in the same terminal assembly, at least a portion of the contact arm 201 of the second terminal 22 extends into the gap between two adjacent contact arms 201 of the first terminal 21.

[0062] Specifically, such as Figure 3 and Figure 4 As shown, in some embodiments, the contact arms 201 of the first and second terminals 21 and 22 are arranged alternately in the same terminal assembly; in other embodiments, the contact arms 201 of the second terminal 22 may be divided into two groups spaced apart in the lateral direction, and the contact arms 201 of the first terminal 21 may be arranged between the two groups of contact arms 201 of the second terminal 22 in the lateral direction; in other embodiments, in the same terminal assembly, the contact arms 201 of the first terminal 21 may be arranged adjacent to each other, and the contact arms 201 of the second terminal 22 may be arranged adjacent to each other, with the contact arms 201 of the first terminal 21 located on one side of the contact arms 201 of the second terminal 22 in the lateral direction.

[0063] In some embodiments of this utility model, the insulating body 1 also has a plurality of heat dissipation channels 106 formed on its top wall, the heat dissipation channels 106 penetrating the top wall along the height direction, so as to dissipate the heat generated by the power terminal pair 2 being energized as quickly as possible.

[0064] In this invention, the power connector 100 also has a plurality of signal terminals 3 located on one side of the power terminal pair 2 in the lateral direction, each of the signal terminals 3 having a mating arm 31 and a soldering part 32.

[0065] In addition, in a modified embodiment of the power connector 100 of this utility model, similar to the aforementioned embodiment, the power connector 100 includes an insulating body 1 and at least one power terminal pair 2. The insulating body 1 has a terminal groove 101 extending in the front-back direction. The power terminal pair 2 is fixed in the terminal groove 101 of the insulating body 1. Each power terminal pair 2 includes an upper row terminal assembly 2a and a lower row terminal assembly 2b arranged opposite each other in the height direction with contact arms 201. Each of the upper row terminal assembly 2a and the lower row terminal assembly 2b includes a first terminal 21 and a second terminal 22. Each of the first terminal 21 and the second terminal 22 has a base portion 202 and at least one contact arm 201 extending forward from the base portion 202.

[0066] The difference is that in this modified embodiment, in the same terminal assembly 2a, 2b, each of the first and second terminals 21, 22 has only one set of contact arms 201, that is, each contact arm 201 is evenly arranged in the lateral direction, that is, in the lateral direction, the distance between two adjacent contact arms 201 is equal; instead of having at least two sets of contact arms 201 as in the first embodiment of the first and second terminals 21, 22.

[0067] In summary, the power connector 100 of this utility model increases the relative area of ​​each terminal assembly 2a and 2b in the lateral direction by setting the width of the base portion 202 of the first and second terminals 21 and 22 in the lateral direction to be no less than 10% of the width of the insulating body 1 in the lateral direction or no less than 15% of the width of the power transmission cavity in the lateral direction. This effectively increases the conductive path of the terminal assembly within a limited width range, suppresses the heating of the power terminals, and enhances the current carrying capacity of the power connector, thereby meeting the requirements of high-power applications.

[0068] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0069] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A power connector comprising an insulating body and at least one pair of power terminals, the insulating body having terminal grooves extending in a front-rear direction, the pair of power terminals being fixed in the terminal grooves of the insulating body, each pair of power terminals including an upper row of terminal assemblies and a lower row of terminal assemblies having contact arms disposed opposite each other in a height direction, each of the upper and lower rows of terminal assemblies including a first terminal and a second terminal, each of the first and second terminals having a base portion and at least one of the contact arms extending forward from the base portion; characterized in that: The width of the base portion of the first and second terminals in the lateral direction is not less than 10% of the width of the insulating body in the lateral direction.

2. The power connector of claim 1, wherein: The width of the base portion of the first and second terminals in the lateral direction is not less than 30% of the width of the insulating body in the lateral direction.

3. The power connector of claim 2, wherein: The contact arms of each of the upper and lower terminal assemblies are arranged in at least two groups arranged side by side in the lateral direction, and the spacing between adjacent two groups of contact arms is greater than the spacing between adjacent two contact arms in the same group.

4. The power connector of claim 3, wherein: The contact arms of each of the first and second terminals are arranged in at least two groups arranged side by side in the lateral direction, and the spacing between adjacent two groups of contact arms in the lateral direction is greater than the spacing between adjacent two contact arms in the same group.

5. The power connector of claim 3, wherein: Each of the terminal grooves is provided with at least one spacing wall separating adjacent two groups of contact arms in the lateral direction.

6. The power connector of claim 5, wherein: The insulating body has a lateral wall extending in the lateral direction, which separates the terminal grooves into two groups corresponding to the upper and lower terminal assemblies respectively, and each of the spacing walls extends in the front-rear direction and has a connecting portion connected to the lateral wall.

7. The power connector of claim 6, wherein: The second terminal is provided with a recess recessed rearward, which is recessed rearward from the front end of the base portion, and the connecting portion is inserted into the recess rearward.

8. The power connector of claim 6, wherein: Each of the spacing walls includes a first spacing portion on the front side of the connecting portion and a second spacing portion on the rear side of the connecting portion, and the second spacing portion is inserted into the spacing space in the height direction between the base portions of the corresponding first and second terminals, so that the base portions are clamped in the height direction by the second spacing portion, the lateral wall, the top wall of the insulating body, and the bottom wall of the insulating body.

9. The power connector of any one of claims 1 to 8, wherein: In the same terminal assembly, at least part of the contact arms of the second terminal extend into the gap between adjacent two contact arms of the first terminal.

10. A power connector comprising an insulating body and at least one pair of power terminals, the insulating body having a power transmission cavity for receiving the pair of power terminals, the pair of power terminals being secured in terminal slots of the insulating body, the power transmission cavity being in communication with the terminal slots, each pair of power terminals comprising an upper row of terminal assemblies and a lower row of terminal assemblies having contact arms oppositely arranged in a height direction, each of the upper row of terminal assemblies and the lower row of terminal assemblies comprising a first terminal and a second terminal, each of the first terminal and the second terminal having a base portion and at least one contact arm extending forwardly from the base portion; characterized in that: The width of the base portion of the first and second terminals in the lateral direction is not less than 15% of the width of the power transmission cavity in the lateral direction.

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