Power supply terminal and large-current connector

Abstract

The utility model relates to the technical field of connectors, in particular to a power supply terminal and a large-current connector, the power supply terminal comprises an upper terminal group and a lower terminal group, the upper terminal group comprises a first upper terminal and a second upper terminal which are overlapped up and down, and the lower terminal group comprises a first lower terminal and a second lower terminal which are overlapped up and down; the high-current connector comprises a shell, a plurality of groups of first terminal assemblies and a plurality of groups of second terminal assemblies, the first terminal assemblies and the second terminal assemblies are arranged in the shell, the first terminal assemblies are the power terminals, the second terminal assemblies are signal terminals, a plurality of contact points are arranged at the front ends of the upper terminal group and the lower terminal group in the first terminal assemblies, and the contact points are arranged at the front ends of the upper terminal group and the lower terminal group in the second terminal assemblies. An original one contact is changed into a plurality of contacts, the contact area, the friction force and the plugging force can be reduced, and the plurality of contacts can reduce the contact impedance and increase the current-carrying capacity.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector, concretely relates to a power terminal and large current connector. BACKGROUND

[0002] The connector is the electromechanical assembly that makes conductor or wire and appropriate mating assembly connect, realizes circuit on and off. The connector passes through its inside terminal structure to transmit signal or current. At present, the connector on market has many kinds, and the upper and lower terminal structure in it is usually single layer terminal structure. Generally speaking, the terminal will be as possible as in the design to realize higher current and signal density as the purpose. The current size that the terminal can bear is positive correlation with the terminal cross section area, and the greater the cross section area of the terminal is, the greater the current that can flow is.

[0003] In the existing terminal structure, because the upper and lower opposite terminal contact points are few, leading to big plugging force, therefore, how to improve on the terminal structure, improves the carrying current of the terminal under the condition of maintaining proper plugging force, is still the subject that the person skilled in the art needs to solve. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims at providing a power terminal and large current connector.

[0005] The utility model discloses a power terminal, including upper terminal group, lower terminal group, the upper terminal group includes the first upper terminal and second upper terminal that set up in the upper and lower overlap, the front end of first upper terminal and second upper terminal respectively extends and has the first elastic arm, second elastic arm of elastic deformation, the first elastic arm, second elastic arm left and right staggered arrangement is set up, the end of first elastic arm, second elastic arm is equipped with first upper contact portion, and first upper contact portion is curved to form by the elastic arm end portion upwards;

[0006] The lower terminal group includes the first lower terminal and second lower terminal that set up in the upper and lower overlap, the front end of first lower terminal and second lower terminal respectively extends and has the third elastic arm, fourth elastic arm of elastic deformation, the third elastic arm, fourth elastic arm left and right staggered arrangement is set up;

[0007] The end of third elastic arm, fourth elastic arm is equipped with first lower contact portion, and first lower contact portion is curved to form by the elastic arm end portion downwards.

[0008] As the preferred scheme of the utility model, the first upper contact portion, first lower contact portion are equipped with the open slot, and at least two contact points are formed on both sides of the open slot, and the design of the open slot is adopted to the contact portion, makes originally one contact point become multiple contact points, can reduce the contact area, reduce the friction, increase the contact point number, reduce the impedance, increase the current carrying capacity.

[0009] As a preferred scheme of the utility model, the rear end of each terminal of the upper terminal group and the lower terminal group is a bent soldering leg. The lower end of the bent soldering leg is welded to the circuit board, used for fixing the terminal, and the soldering leg is provided with a plurality of structures which are beneficial to improving the connecting strength and ensuring the connecting stability of the terminal.

[0010] As a preferred scheme of the utility model, the first upper terminal and the second upper terminal are connected to each other, preferably, the first upper terminal and the second upper terminal are oppositely provided with grooves, the opposite surfaces of the two grooves form a protrusion and are connected together by welding. The first upper terminal and the second upper terminal are the same upper terminal group, the first lower terminal and the second lower terminal are the same lower terminal group, when the bent soldering leg is used on each terminal, the transmission length of the lower terminal group will be shorter than that of the upper terminal group, when the same current is transmitted, the lower terminal group will be superior to the upper terminal group, the addition of the grooves can connect the first upper terminal and the second upper terminal by welding, increase the thickness of the terminal material, and the cross-sectional area of the terminal material is also increased, so that the impedance of the terminal itself is reduced, thereby increasing the large current carrying capacity.

[0011] As a preferred scheme of the utility model, the rear end of each terminal of the upper terminal group and the lower terminal group is a straight soldering leg, specifically, in the embodiment, each terminal is at an angle with the straight soldering leg, and the housing of the connector is provided with a plug-in column which is consistent with the direction of the straight soldering leg, and the connector adopts a straight soldering plate.

[0012] As a preferred scheme of the utility model, a waist-shaped groove is provided at the connecting position of the elastic arm in the upper terminal group and the lower terminal group, in the embodiment, under the same conditions, the thicker the material of the terminal is, the greater the plug-in force will be, the waist-shaped groove is designed at the connecting position of the elastic arm to reduce the plug-in force of the product and facilitate the plug-in of the connector product.

[0013] This utility model also provides a high-current connector, including a housing and several sets of first terminal assemblies and several sets of second terminal assemblies disposed within the housing. The first terminal assemblies are power terminals, and the second terminal assemblies are signal terminals. The first terminal assemblies are inserted into a first receiving groove of the housing, and the second terminal assemblies are inserted into a second receiving groove of the housing. The first and second receiving grooves penetrate both ends of the housing and are divided into several terminal slots. The first terminal assemblies are inserted into the first receiving grooves, and the second terminal assemblies are inserted into the second receiving grooves. The first terminal assembly includes an upper terminal group and a lower terminal group disposed opposite each other within the first receiving groove. The upper terminal group includes a first upper terminal and a second upper terminal arranged vertically overlapping. The front ends of the first and second upper terminals respectively extend into a first elastic arm and a second elastic arm with elastic deformation. The first and second elastic arms are staggered left and right. The ends of the first and second elastic arms are each provided with a first upper contact portion, which is formed by bending the end of the elastic arm upwards.

[0014] The lower terminal assembly includes a first lower terminal and a second lower terminal that are stacked vertically. The front ends of the first lower terminal and the second lower terminal extend into a third elastic arm and a fourth elastic arm with elastic deformation, respectively. The third elastic arm and the fourth elastic arm are staggered left and right. The ends of the third elastic arm and the fourth elastic arm are each provided with a first lower contact portion, which is formed by bending the end of the elastic arm downward.

[0015] The second terminal assembly includes a third upper terminal and a third lower terminal disposed opposite to each other in the second receiving groove, wherein the front ends of the third upper terminal and the third lower terminal extend out to form a fifth elastic arm and a sixth elastic arm with elastic deformation, respectively.

[0016] As a preferred embodiment of the present invention, the end of the fifth elastic arm is provided with a second upper contact portion, which is formed by bending the end of the elastic arm upward, and the end of the sixth elastic arm is provided with a second lower contact portion, which is formed by bending the end of the elastic arm downward.

[0017] As a preferred embodiment of this utility model, the rear end of each terminal of the first terminal assembly and the second terminal assembly is a bent welding foot or a vertical welding foot, and the housing is provided with a post that is aligned with the direction of the bent welding foot or the vertical welding foot. The post is provided for positioning during installation, which facilitates installation.

[0018] As a preferred embodiment of this utility model, the upper and lower surfaces of the housing are provided with a plurality of heat dissipation grooves, which helps to improve the heat dissipation performance of the connector.

[0019] The utility model discloses an advantageous effect is: 1, the utility model discloses a kind of power terminal, adopt four-layer arrangement structure, the current of bearing circulation is greater, the elastic arm on power terminal has the contact of bending, male and female connection is more easily to butt joint, can reduce plugging force, male and female plug-in contact uses elastic structure, more have anti-shock ability;Contact portion uses the design of open slot, make originally one contact point become multiple contact points, can reduce contact area, reduce friction, and multiple contact points can reduce contact impedance, increase current carrying capacity.

[0020] 2, the utility model discloses a kind of large current connector, including first terminal assembly and second terminal assembly, wherein, the first terminal assembly is above-mentioned power terminal, second terminal assembly is signal terminal, power terminal adopts four-layer arrangement structure, signal terminal adopts double-layer structure, can realize higher current and signal density, the current of bearing circulation is greater;The upper terminal group and lower terminal group in first terminal assembly front end are equipped with multiple contact points, make originally one contact point become multiple contact points, can reduce contact area, reduce friction, reduce plugging force, and multiple contact points can reduce contact impedance, increase current carrying capacity. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model is further described with the drawings, but the embodiment in the drawing does not constitute any limitation to the utility model, for ordinary skilled person in the art, without paying creative labor, can also obtain other drawings according to following drawing.

[0022] Figure 1 It is the structure schematic view of the utility model one power terminal embodiment.

[0023] Figure 2 It is another structure schematic view of the utility model one power terminal embodiment.

[0024] Figure 3 It is Figure 1 The structure schematic view of the upper terminal group shown in.

[0025] Figure 4 It is Figure 1 The structure schematic view of the lower terminal group shown in.

[0026] Figure 5 It is the structure schematic view of the utility model one power terminal embodiment two.

[0027] Figure 6 It is the structure schematic view of the utility model one large current connector embodiment.

[0028] Figure 7 It is Figure 6 Another structure schematic view of the large current connector shown.

[0029] Figure 8 Fig. 1 is a perspective view of a large current connector according to an embodiment of the present application. Figure 6 Fig. 2 is a front view of the large current connector shown in Fig. 1.

[0030] Figure 9 Fig. 3 is a structural schematic view of a first terminal assembly in the large current connector shown in Fig. 1. Figure 6 Fig. 4 is a structural schematic view of a second terminal assembly in the large current connector shown in Fig. 1.

[0031] Figure 10 Fig. 5 is another structural schematic view of the second terminal assembly in the large current connector shown in Fig. 1. Figure 9 Fig. 6 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 2.

[0032] Figure 11 Fig. 7 is another structural schematic view of the second terminal assembly in the large current connector shown in Fig. 2. Figure 10 Fig. 8 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 3.

[0033] Figure 12 Fig. 9 is another structural schematic view of the second terminal assembly in the large current connector shown in Fig. 3.

[0034] Figure 13 Fig. 10 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 4. Figure 12 Fig. 11 is another structural schematic view of the second terminal assembly in the large current connector shown in Fig. 4.

[0035] Figure 14 Fig. 12 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 5. Figure 12 Fig. 13 is a front view of the large current connector shown in Fig. 1.

[0036] Figure 15 Fig. 14 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 6. Figure 12 Fig. 15 is a structural schematic view of the second terminal assembly in the large current connector shown in Fig. 6.

[0037] Figure 16 Fig. 16 is another structural schematic view of the second terminal assembly in the large current connector shown in Fig. 6. Figure 12 Fig. 17 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 7.

[0038] Figure 17 Fig. 18 is another structural schematic view of the second terminal assembly in the large current connector shown in Fig. 7. Figure 12 Fig. 19 is a structural schematic view of the first terminal assembly in the large current connector shown in Fig. 8.

[0039] The reference signs shown in the drawings are as follows: 1, housing; 101, first accommodating groove; 102, second accommodating groove; 103, heat dissipation groove; 104, insertion post; 2, first terminal assembly; 201, first upper terminal; 202, first elastic arm; 203, first upper contact portion; 204, second upper terminal; 205, second elastic arm; 206, open slot; 207, bent solder tail; 208, waist-shaped groove; 209, first lower terminal; 210, third elastic arm; 211, first lower contact portion; 212, second lower terminal; 213, fourth elastic arm; 214, recess; 215, upright solder tail; 3, second terminal assembly; 301, third upper terminal; 302, fifth elastic arm; 303, second upper contact portion; 304, third lower terminal; 305, sixth elastic arm; 306, second lower contact portion. Detailed Implementation

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] Example 1, see Figures 1 to 4 As shown, the present invention provides a power terminal including an upper terminal group and a lower terminal group. The upper terminal group includes a first upper terminal 201 and a second upper terminal 204 that are stacked vertically. The front ends of the first upper terminal 201 and the second upper terminal 204 respectively extend into a first elastic arm 202 and a second elastic arm 205 with elastic deformation. The first elastic arm 202 and the second elastic arm 205 are staggered left and right. The ends of the first elastic arm 202 and the second elastic arm 205 are each provided with a first upper contact portion 203, which is formed by bending the end of the elastic arm upward.

[0044] The lower terminal set includes a first lower terminal 209 and a second lower terminal 212 arranged in an upper-lower overlapping manner, the front ends of the first lower terminal 209 and the second lower terminal 212 respectively extend out third elastic arms 210 and fourth elastic arms 213 with elastic deformation, the third elastic arms 210 and the fourth elastic arms 213 are arranged in a left-right staggered manner; the end portions of the third elastic arms 210 and the fourth elastic arms 213 are each provided with a first lower contact portion 211, and the first lower contact portion 211 is formed by bending the elastic arm end portion downward.

[0045] In the power terminal provided in the embodiment, as shown in Figure 1 、 Figure 3 、 Figure 4 The first upper contact portion 203 and the first lower contact portion 211 are each provided with an open slot 206, at least two contact points are formed on both sides of the open slot 206, the design of the open slot 206 changes the original one contact point into multiple contact points, which can reduce the contact area, reduce the friction, increase the number of contact points, reduce the impedance, and increase the current carrying capacity.

[0046] In the power terminal provided in the embodiment, as shown in Figures 1-4 The rear end of each terminal of the upper terminal set and the lower terminal set is a bent soldering leg 207, specifically, in the embodiment, the bent soldering leg 207 of each terminal is 90 degrees, the lower end of the bent soldering leg 207 is welded to the circuit board for fixing the terminal, and the soldering leg is provided with multiple portions which are beneficial to improve the connection strength and ensure the connection stability of the terminal.

[0047] In the power terminal provided in the embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 The first upper terminal 201 and the second upper terminal 204 are connected to each other, in the embodiment, the first upper terminal 201 and the second upper terminal 204 are provided with grooves 214 opposite to each other, the opposite surfaces of the two grooves 214 form protrusions and are connected together by welding. The first upper terminal 201 and the second upper terminal 204 are the same upper terminal set, the first lower terminal 209 and the second lower terminal 212 are the same lower terminal set, when the bent soldering leg 207 is used on each terminal, the transmission length of the lower terminal set will be shorter than that of the upper terminal set, in the transmission of the same current, the lower terminal set will be superior to the upper terminal set, the addition of the groove 214 can connect the first upper terminal 201 and the second upper terminal 204 in a welded manner, increase the thickness of the terminal material, and increase the cross-sectional area of the terminal material, so as to reduce the impedance of the terminal itself, thereby increasing the large-current current carrying capacity.

[0048] Embodiment two, refer to Figure 5As shown in the power terminal provided in the embodiment, the rear end of each terminal of the upper terminal group and the lower terminal group is a vertical soldering leg 215, and in particular, in the embodiment, the vertical soldering leg 215 of each terminal is 180 degrees, and the lower end of the vertical soldering leg 215 is welded to the circuit board.

[0049] Further, as shown in the power terminal provided in the embodiment, the upper terminal group and the lower terminal group are provided with a waist-shaped groove 208 at the connection position of the elastic arms, and under the same conditions, the thicker the terminal material, the greater the forward force and the insertion force, and the waist-shaped groove 208 is designed at the connection position of the elastic arms to reduce the insertion force of the product and facilitate the insertion and extraction of the connector product. Figure 3 Figure 4 Figure 5 As shown in the power terminal provided in the embodiment, the upper terminal group and the lower terminal group are provided with a waist-shaped groove 208 at the connection position of the elastic arms, and under the same conditions, the thicker the terminal material, the greater the forward force and the insertion force, and the waist-shaped groove 208 is designed at the connection position of the elastic arms to reduce the insertion force of the product and facilitate the insertion and extraction of the connector product.

[0050] In the third embodiment, as shown in the large-current connector provided in the embodiment, the first terminal assembly 2 is the power terminal, and the second terminal assembly 3 is a signal terminal, the first terminal assembly 2 is inserted into the first accommodating groove 101 of the shell 1, and the second terminal assembly 3 is inserted into the second accommodating groove 102 of the shell 1; the first accommodating groove 101 and the second accommodating groove 102 penetrate through both ends of the shell 1 and are divided into a plurality of terminal grooves in the first accommodating groove 101 and the second accommodating groove 102, the first terminal assembly 2 is inserted into the first accommodating groove 101, and the second terminal assembly 3 is inserted into the second accommodating groove 102; the first terminal assembly 2 includes an upper terminal group and a lower terminal group arranged oppositely in the first accommodating groove 101, the upper terminal group includes a first upper terminal 201 and a second upper terminal 204 arranged in a superposed manner, the front end of the first upper terminal 201 and the second upper terminal 204 respectively extends a first elastic arm 202 and a second elastic arm 205 having elastic deformation, the first elastic arm 202 and the second elastic arm 205 are arranged in a staggered manner, and the end of the first elastic arm 202 and the second elastic arm 205 is provided with a first upper contact part 203 which is bent upward from the end of the elastic arm to form; Figures 6-11 The lower terminal group includes a first lower terminal 209 and a second lower terminal 212 arranged in a superposed manner, the front end of the first lower terminal 209 and the second lower terminal 212 respectively extends a third elastic arm 210 and a fourth elastic arm 213 having elastic deformation, the third elastic arm 210 and the fourth elastic arm 213 are arranged in a staggered manner, and the end of the third elastic arm 210 and the fourth elastic arm 213 is provided with a first lower contact part 211 which is bent downward from the end of the elastic arm to form;

[0051]

[0052] ​​​The second terminal assembly 3 comprises a third upper terminal 301 and a third lower terminal 304 oppositely arranged in the second accommodating groove 102, and the front ends of the third upper terminal 301 and the third lower terminal 304 respectively extend out fifth elastic arms 302 and sixth elastic arms 305 with elastic deformation.

[0053] The large-current connector provided by the embodiment comprises a first terminal assembly 2 and a second terminal assembly 3. Figure 10 、 Figure 11 As shown in the figure, the end of the fifth elastic arm 302 is provided with a second upper contact part 303 which is formed by bending the end of the elastic arm upward, and the end of the sixth elastic arm 305 is provided with a second lower contact part 306 which is formed by bending the end of the elastic arm downward.

[0054] The large-current connector provided by the embodiment comprises a first terminal assembly 2 and a second terminal assembly 3. Figures 6-9 As shown in the figure, the rear end of each terminal of the first terminal assembly 2 and the second terminal assembly 3 is a bent soldering leg 207, and the shell 1 is provided with a plug column 104 which is consistent with the direction of the bent soldering leg 207.

[0055] Embodiment four, referring to the figure, Figures 12-17 The large-current connector provided by the embodiment comprises a first terminal assembly 2 and a second terminal assembly 3.

[0056] Further, as shown in the figure, Figure 6 、 Figure 12 The upper and lower surfaces of the shell 1 are provided with a plurality of heat dissipation grooves 103, and the heat dissipation grooves 103 are beneficial to improve the heat dissipation performance of the connector.

[0057] The above has further described the utility model by means of specific embodiments, but it should be understood that, here specific description, should not be understood as the limitation of the essence and scope of the utility model, the various modifications of the above embodiment made by the ordinary skill in the art after reading the specification all belong to the range protected by the utility model.

Claims

1. A power terminal characterized by, Comprising: The upper terminal group comprises a first upper terminal (201) and a second upper terminal (204) arranged in an upper-lower overlapping manner, the front ends of the first upper terminal (201) and the second upper terminal (204) respectively extend out of a first elastic arm (202) and a second elastic arm (205) with elastic deformation, the first elastic arm (202) and the second elastic arm (205) are arranged in a left-right staggered manner, and the end portions of the first elastic arm (202) and the second elastic arm (205) are respectively provided with a first upper contact portion (203); The lower terminal group comprises a first lower terminal (209) and a second lower terminal (212) arranged in an upper-lower overlapping manner, the front ends of the first lower terminal (209) and the second lower terminal (212) respectively extend out of a third elastic arm (210) and a fourth elastic arm (213) with elastic deformation, the third elastic arm (210) and the fourth elastic arm (213) are arranged in a left-right staggered manner, and the end portions of the third elastic arm (210) and the fourth elastic arm (213) are respectively provided with a first lower contact portion (211); The first upper contact portion (203) and the first lower contact portion (211) are respectively provided with an open slot (206), and at least two contact points are formed on both sides of the open slot (206).

2. The power terminal of claim 1, wherein: The rear ends of the terminals of the upper terminal group and the lower terminal group are bent welding legs (207).

3. The power terminal of claim 2, wherein: The first upper terminal (201) and the second upper terminal (204) are connected to each other.

4. The power terminal of claim 1, wherein: The rear ends of the terminals of the upper terminal group and the lower terminal group are straight welding legs (215).

5. The power terminal according to any one of claims 1 to 4, characterized in that: A waist-shaped groove (208) is formed through the connection between the elastic arms in the upper terminal group and the lower terminal group.

6. A high current connector characterized by: Comprising a shell (1) and a plurality of first terminal assemblies (2) and a plurality of second terminal assemblies (3) arranged in the shell (1), wherein the first terminal assembly (2) is the power terminal of any one of claims 1-5, the second terminal assembly (3) is a signal terminal, the first terminal assembly (2) is inserted into the first accommodating groove (101) of the shell (1), and the second terminal assembly (3) is inserted into the second accommodating groove (102) of the shell (1); The second terminal assembly (3) comprises a third upper terminal (301) and a third lower terminal (304) arranged oppositely in the second accommodating groove (102), the front ends of the third upper terminal (301) and the third lower terminal (304) respectively extend out of a fifth elastic arm (302) and a sixth elastic arm (305) with elastic deformation.

7. The high current connector of claim 6, wherein: The end portion of the fifth elastic arm (302) is provided with a second upper contact portion (303), and the end portion of the sixth elastic arm (305) is provided with a second lower contact portion (306).

8. The high current connector of claim 6, wherein: The rear ends of the terminals of the first terminal assembly (2) and the second terminal assembly (3) are bent welding legs (207) or straight welding legs (215), and the shell (1) is provided with a plug column (104) in the same direction as the bent welding legs (207) or the straight welding legs (215).

9. The high current connector of claim 6, wherein: A plurality of heat dissipation grooves (103) are formed on the upper and lower surfaces of the shell (1).

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