Electric connector assembly
By arranging an anti-short circuit structure on the docking element of the electrical connector assembly, the short circuit problem caused by tilted insertion of the electronic card is solved, ensuring that the electrical connector avoids short circuits and arcs when transmitting large currents.
Patent Information
- Application Number
- CN202420897285.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing electrical connectors are prone to inclined insertion when the electronic card is inserted, causing the contact pad to contact both the positive and negative terminals, causing a short circuit or an arc.
An electrical connector assembly is designed to ensure that a sufficient insulation distance is maintained between the contact pads and the conductive terminals to avoid short circuits by arranging a first anti-short circuit structure and a second anti-short circuit structure on the mating component.
Even if the mating component is inserted obliquely in the longitudinal direction, the first contact pad only contacts the positive terminal group, and the second contact pad only contacts the negative terminal group, preventing short-circuit current from causing the electrical connector assembly to burn.
Smart Images
Figure CN222380878U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to an electric connector component, in particular to an electric connector component which transmits large current and allows a butt joint element to be obliquely inserted into a slot. [Background technology]
[0002] Generally, an electronic card has at least two contact pads, and is generally inserted into a slot of an electrical connector to form an electrical connection with a conductive terminal. When the electrical connector does not have the function of pre-aligning the electronic card before inserting the electronic card into the slot, the electronic card may be inserted into the slot at an angle in the longitudinal direction of the slot, and the inclined contact pad may contact the adjacent positive terminal and negative terminal at the same time, resulting in an accidental short circuit, or after contacting one of the positive terminal and the negative terminal, the contact pad may be too close to the other conductive terminal, which may easily generate an arc.
[0003] Therefore, it is necessary to design an electrical connector assembly to solve the above technical problems. [Contents of the utility model]
[0004] The purpose of the utility model is to provide a first anti-short circuit structure and a second anti-short circuit structure on the docking element so that the docking element is inserted into the slot in an inclined manner in the longitudinal direction, and the first contact pad contacting the positive terminal maintains a sufficient insulation distance with the negative terminal, and the second contact pad contacting the negative terminal maintains a sufficient insulation distance with the positive terminal to avoid short circuit problems.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An electrical connector assembly comprises: an electrical connector having an insulating body, the insulating body having a slot recessed from top to bottom, the slot extending in a longitudinal direction, a plurality of conductive terminals arranged in the slot at intervals along the longitudinal direction, and the plurality of conductive terminals comprising a positive terminal group formed by a plurality of positive terminals arranged in succession and a negative terminal group formed by a plurality of negative terminals arranged in succession, the positive terminal group and the negative terminal group being arranged adjacent to each other in the longitudinal direction; a docking element inserted into the slot from top to bottom, at least one surface of the docking element being provided with at least one first contact pad and at least one second contact pad adjacent to each other in the longitudinal direction, the first contact pad being in contact with the positive terminal group, and a first anti-short-circuit structure being provided at a lower end of a side of the first contact pad close to the second contact pad, the second contact pad being in contact with the negative terminal group, and a second anti-short-circuit structure being provided at a lower end of a side of the second contact pad close to the first contact pad.
[0007] Furthermore, the distance between the positive terminal in the positive terminal group closest to the negative terminal group and the negative terminal in the negative terminal group closest to the positive terminal group is greater than the distance between any two adjacent positive terminals or the distance between any two negative terminals.
[0008] Further, each surface of the docking element opposite to each other in the thickness direction has two separated first contact pads, and the two first contact pads on the same surface extend out of the slot along the plane where they are located to form two separated first conductive layers, and the first conductive layer is covered by a solder resist layer. The docking element has at least one first inner conductive layer located between two first conductive layers, and the docking element also has a plurality of conductive through holes penetrating the docking element along its thickness direction, and a part of the conductive through holes connect the two first conductive layers facing each other and the first inner conductive layer located between the two first conductive layers in the thickness direction; each surface of the docking element opposite to each other in the thickness direction has two separated second contact pads, and the two second contact pads on the same surface extend out of the slot along the plane where they are located to form two separated second conductive layers, and the second conductive layer is covered by a solder resist layer. The docking element has at least one second inner conductive layer located between two second conductive layers, and in the thickness direction, another part of the conductive through holes connect the two second conductive layers facing each other and the second inner conductive layer located between the two second conductive layers.
[0009] Furthermore, the docking element also has a plurality of mounting through holes arranged along the thickness direction, wherein two of the mounting through holes penetrate the two stacked layers of the first conductive layer and the first inner conductive layer, and the other two of the mounting through holes penetrate the two stacked layers of the second conductive layer and the second inner conductive layer, and the docking element also includes two positive cables and two negative cables, the two positive cables are connected to at least one of the first conductive layers, and the two negative cables are connected to at least one of the second conductive layers.
[0010] Furthermore, the first anti-short circuit structure and the second anti-short circuit structure may be chamfers or insulating coatings.
[0011] Furthermore, each of the front and rear opposing surfaces of the docking element has the first contact pad and the second contact pad spaced apart from each other, each of the conductive terminals has a fixed portion, a neck extending upward from the fixed portion and two contact arms extending upward from the neck, the neck can swing along the thickness direction of the docking element, the two contact arms have two contact portions protruding into the slot, the two contact portions of each conductive terminal contact with the first contact pad or the second contact pad on both sides of the docking element to form an electrical connection, and the protrusion distance of each contact portion relative to the inner wall of the slot is greater than 0.2 mm.
[0012] Furthermore, each of the conductive terminals has a contact arm extending upward, the top of the contact arm has a contact portion, the contact portion has a contact edge and a guide edge facing the docking element in the slot, the contact edge contacts the first contact pad or the second contact pad to form an electrical connection, the first contact pad has a first bottom edge close to the bottom edge of the docking element, the second contact pad has a second bottom edge close to the bottom edge of the docking element, the height difference between the first bottom edge and the bottom edge is equal to the height difference between the second bottom edge and the bottom edge, and is greater than the height difference between the bottom end and the top end of the contact portion.
[0013] An electrical connector assembly comprises: an electrical connector having an insulating body, wherein the insulating body is recessed with a slot from top to bottom, the slot extends in a longitudinal direction, a plurality of conductive terminals are arranged in the slot at intervals along the longitudinal direction, and the plurality of conductive terminals include a positive terminal group formed by a plurality of positive terminals arranged in succession and a negative terminal group formed by a plurality of negative terminals arranged in succession, the positive terminal group and the negative terminal group are arranged adjacent to each other in the longitudinal direction; a docking element is inserted into the slot from top to bottom, a surface of the docking element has at least one first contact pad and at least one second contact pad arranged in the longitudinal direction, the first contact pad contacts the positive terminal group, and the first contact pad has a first side edge close to the second contact pad, a first bottom edge close to the bottom edge of the docking element, and a first chamfer connecting the first side edge and the first bottom edge, the second contact pad contacts the negative terminal group, and the second contact pad has a second side edge close to the first contact pad, a second bottom edge close to the bottom edge of the docking element, and a second chamfer connecting the second side edge and the second bottom edge.
[0014] Furthermore, each surface of the docking element opposite to each other in the thickness direction has two separated first contact pads, and the two first contact pads on the same surface extend outside the slot along the plane where they are located to form two separated first conductive layers, and the first conductive layer is covered by a solder resist layer. The docking element has at least one first inner conductive layer located between the two first conductive layers, and the first inner conductive layer is stacked with the first conductive layers of the two planes in the thickness direction of the docking element. The docking element also has a plurality of conductive through holes penetrating the docking element along its thickness direction, and a part of the conductive through holes connect the two first conductive layers facing each other and the first inner conductive layer located between the two first conductive layers in the thickness direction, and the first inner conductive layer extends between the two first contact pads on the two surfaces.
[0015] Furthermore, the angle of the first chamfer is greater than 20°, and the projection length of the first chamfer on the bottom edge is greater than 50% of the distance between the first side edge and the second side edge; the angle of the second chamfer is greater than 20°, and the projection length of the second chamfer on the bottom edge is greater than 50% of the distance between the first side edge and the second side edge.
[0016] Compared with the prior art, the electrical connector assembly designed in the utility model has the following beneficial effects: even if the docking element is inserted into the slot at an angle in the longitudinal direction, the first contact pad will only contact the positive terminal group but not the negative terminal group, and the second contact pad will only contact the negative terminal group but not the positive terminal group, thereby avoiding the short circuit between the positive and negative poles causing excessive short-circuit current and burning the electrical connector assembly; and when the docking element reaches the maximum insertion depth in an inclined state, the first anti-short-circuit structure or the second anti-short-circuit structure (for example, the first chamfer or the second chamfer) can ensure that the first contact pad maintains a sufficient insulation distance from the negative terminal, and the second contact pad maintains a sufficient insulation distance from the positive terminal, thereby avoiding the short circuit between the positive and negative poles causing excessive short-circuit current and burning the electrical connector assembly.
Brief Description of the Drawings
[0017] Figure 1 It is a three-dimensional diagram of the electrical connector assembly of the utility model;
[0018] Figure 2 for Figure 1 Exploded view of the electrical connector and mating components;
[0019] Figure 3 A cross-sectional view of the electrical connector and a partial cross-sectional view of the mating element;
[0020] Figure 4 is a schematic diagram of the contact between the docking element and the conductive terminal in the electrical connector;
[0021] Figure 5 It is a partial front view of the docking element;
[0022] Figure 6 A partial cross-sectional view cut along a first contact pad of a docking element;
[0023] Figure 7 A partial cross-sectional view cut along the second contact pad of the docking element;
[0024] Figure 8 A schematic diagram of a mating component beginning to be obliquely inserted into a slot of an electrical connector;
[0025] Fig. 9 A schematic diagram of the docking element continuing to be obliquely inserted to a maximum oblique insertion depth;
[0026] Fig.10 It is a schematic diagram of another embodiment of the first anti-short circuit structure and the second anti-short circuit structure.
[0027] Description of the accompanying drawings for the specific implementation:
[0028]
[0029] [Specific implementation method]
[0030] In order to better understand the content of the utility model, the utility model is further described in detail in combination with specific implementation schemes and drawings.
[0031] like Figures 1 to 4 As shown, the electrical connector assembly of the present invention is used for transmitting large currents, and includes an electrical connector 1 and a docking element 2. The electrical connector 1 is a slot connector, and when in use, the docking element 2 must be inserted into the slot 111 of the electrical connector 1.
[0032] like Figures 1 to 4As shown, the electrical connector 1 has an insulating body 11 and a plurality of conductive terminals 12. The insulating body 11 is concave with a slot 111 from top to bottom. The slot 111 extends in the longitudinal direction. The plurality of conductive terminals 12 are arranged in the slot 111 at intervals along the longitudinal direction. Each conductive terminal 12 has a fixed portion 121, a neck 122 extending upward from the fixed portion 121, and two contact arms 123 extending upward from the neck 122. The neck 122 can swing along the thickness direction of the docking element 2. The two contact arms 123 have two contact portions 1231 protruding into the slot 111. The contact portions 1231 contact the docking element 2 to form an electrical connection. The protruding distance D1 of the contact portion 1231 relative to the inner side wall of the slot 111 is greater than 0.2 mm. In this embodiment, the contact portion 1231 is located at the top of the contact arm 123 and the protruding distance D1 relative to the inner side wall of the slot 111 is approximately equal to 0.5 mm. The contact portion 1231 has a contact edge C and a guide edge G facing the docking element 2 in the slot 111. The contact edge C is arc-shaped and protrudes about 0.5 mm relative to the inner wall of the slot 111. The contact edge C contacts the first contact pad 21 or the second contact pad 24 to form an electrical connection. The guide edge G is an inclined straight edge, which is used to guide the docking element 2 to smoothly abut against the contact edge C during the insertion process. The height difference D2 between the bottom and the top of the contact portion 1231 is about 2.6 mm.
[0033] like Figure 4 As shown, the thickness of the docking element 2 is smaller than the width of the slot 111, so the docking element 2 can swing in the thickness direction in the slot 111, driving the contact arm 123 to deviate to a certain extent. Since the two contact arms 123 and the neck 122 are connected to each other, the neck 122 can swing freely in the thickness direction of the docking element 2. When one of the contact arms 123 swings in the thickness direction, it will naturally drive the neck 122 to swing in the same direction. Since the other contact arm is directly connected to the movable neck, it can also swing with the neck. The neck 122 extends upward from the fixed portion 121 to a sufficient length, and does not contact the insulating body 11 in the thickness direction when stationary, so the neck 122 has the freedom to swing in the thickness direction. The two contact arms 123 are connected to the same neck 122, and the swing amplitude of the two contact arms 123 is substantially the same as the swing amplitude of the neck 122, which helps to make the swing amplitudes of the two contact arms 123 converge, which is conducive to the two contact arms 123 keeping in contact with the docking element 2 at the same time.
[0034] refer to Figure 4 , Figure 8and Fig. 9 The plurality of conductive terminals 12 include a plurality of positive terminals 12p and a plurality of negative terminals 12n, wherein the plurality of positive terminals 12p are continuously arranged at a fixed interval to form a positive terminal group, and the plurality of negative terminals 12n are continuously arranged at a fixed interval to form a negative terminal group, and the positive terminal group and the negative terminal group are arranged adjacent to each other in the longitudinal direction. The spacing between the positive terminal 12p closest to the negative terminal group in the positive terminal group and the negative terminal 12n closest to the positive terminal group in the negative terminal group is greater than the spacing between any two adjacent positive terminals 12p or the spacing between any two negative terminals 12n.
[0035] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the docking element 2 is a card-type power module, and the electrical connector assembly further includes a positive cable 3, a negative cable 4, and a housing 5. The bottom edge 20 of the docking element 2 is inserted into the slot 111, the positive cable 3 and the negative cable 4 are connected to the portion of the docking element 2 that is not inserted into the slot 111, and the docking element 2, the positive cable 3, and the negative cable 4 are all fixed to the housing 5.
[0036] like Figures 5 to 7As shown, each surface of the docking element 2 opposite to each other in the thickness direction has two separated first contact pads 21, and each first contact pad 21 contacts the contact portion 1231 of the plurality of positive terminals 12p to transmit a larger positive current. The two first contact pads 21 on the same surface extend outward from the slot 111 along the plane where they are located to form two separated first conductive layers 22, and the first conductive layer 22 is covered by the solder resist layer SM, and the docking element 2 has at least one first inner conductive layer 23 located between its two layers of the first conductive layers 22. Each surface of the docking element 2 opposite to each other in the thickness direction also has two separated second contact pads 24, and each second contact pad 24 contacts the contact portion 1231 of the plurality of negative terminals 12n to transmit a negative current. The two first contact pads 21 and the two second contact pads 24 are arranged adjacent to each other along the longitudinal direction. The two second contact pads 24 on the same surface extend outward from the slot 111 along the plane where they are located to form two separated second conductive layers 25, the second conductive layers 25 are covered by the solder resist layer SM, and the docking component 2 has at least one second inner conductive layer 26 located between its two second conductive layers 25. In this embodiment, the docking component 2 has two first inner conductive layers 23, the two first inner conductive layers 23 are stacked with the first conductive layers 22 on the two surfaces in the thickness direction, the docking component 2 also has two second inner conductive layers 26, the second inner conductive layers 26 are stacked with the second conductive layers 25 on the two surfaces in the thickness direction, and the docking component 2 also has a plurality of conductive through holes 27 penetrating through itself in the thickness direction, a part of the conductive through holes 27 connecting the two first conductive layers 22 facing each other and the two first inner conductive layers 26 located between the two first conductive layers 22 in the thickness direction. 3, enough conductive vias 27 connect the first conductive layer 22 and the first inner conductive layer 23, so that a sufficiently large positive current can be transmitted between the first conductive layer 22 and the first inner conductive layer 23, and another part of the conductive vias 27 connect the two second conductive layers 25 facing each other and the two second inner conductive layers 26 located between the two second conductive layers 25, and enough conductive vias 27 connect the second conductive layer 25 and the second inner conductive layer 26, so that a sufficiently large negative current can be transmitted between the second conductive layer 25 and the second inner conductive layer 26. In this embodiment, the first inner conductive layer 23 extends between the two first contact pads 21 on the two surfaces, and the second inner conductive layer 26 extends between the two second contact pads 24 on the two surfaces.
[0037] like Figure 4 and Figure 5As shown, the docking element 2 also has a plurality of mounting through holes 28 arranged along the thickness direction, wherein two of the mounting through holes 28 penetrate the two stacked first conductive layers 22 and the two first inner conductive layers 23, and the other two mounting through holes 28 penetrate the two stacked second conductive layers 25 and the two second inner conductive layers 26. The docking element 2 also includes two positive cables 3 and two negative cables 4, wherein the two positive cables 3 are connected to at least one of the first conductive layers 22, and the two negative cables 4 are connected to at least one of the second conductive layers 25, so as to transmit a current of not less than 50 amperes.
[0038] like Figure 4 and Figure 5As shown, the first contact pad 21 is in contact with the positive terminal group, and the second contact pad 24 is in contact with the negative terminal group. For the first contact pad 21 and the second contact pad 24 that are adjacent in the middle, a first anti-short circuit structure is provided at the lower end of the first contact pad 21 close to the second contact pad 24, and a second anti-short circuit structure is provided at the lower end of the second contact pad 24 close to the first contact pad 21. If the anti-short circuit structure is not provided, when the docking element 2 is inserted obliquely into the slot 111, the insulation distance between the first contact pad 21 that transmits the positive current and the negative terminal group that transmits the negative current is too short, or the insulation distance between the second contact pad 24 that transmits the negative current and the positive terminal group that transmits the positive current is too short, which is easy to short-circuit when transmitting a large current, and there is a risk of burning the electrical connector assembly. In this embodiment, the first anti-short circuit structure and the second anti-short circuit structure are both chamfered, and the chamfers are directly formed by controlling the printed shapes of the first contact pad 21 and the second contact pad 24 during the manufacturing process of the docking element 2. The chamfers make the first contact pad 21 and the second contact pad 24 form a missing corner, and there is no conductive material in the missing corner. Specifically, the first contact pad 21 has a first side edge 211 close to the second contact pad 24, a first bottom edge 212 close to the bottom edge 20 of the docking element 2, and a first chamfer 213 connecting the first side edge 211 and the first bottom edge 212. The second contact pad 24 has a second side edge 241 close to the first contact pad 21, a second bottom edge 242 close to the bottom edge 20 of the docking element 2, and a second chamfer 243 connecting the second side edge 241 and the second bottom edge 242. The angle of the first chamfer 213 is greater than 20°, the length D3 of the vertical projection of the first chamfer 213 on the bottom edge 20 is greater than 50% of the distance D5 between the first side edge 211 and the second side edge 241, the angle of the second chamfer 243 is greater than 20°, and the length D4 of the vertical projection of the second chamfer 243 on the bottom edge 20 is greater than 50% of the distance D5 between the first side edge 211 and the second side edge 241.
[0039] like Figure 5As shown, in this embodiment, the angle α of the first chamfer 213 is about 21°, the distance D5 between the first side edge 211 and the second side edge 241 is about 2.73 mm, and the length D3 of the vertical projection of the first chamfer 213 on the bottom edge 20 is about 1.79 mm, which is greater than 50% of 2.73 mm. The second chamfer 243 is symmetrically arranged with the first chamfer 213, the angle of the second chamfer 243 is about 21°, and the length D4 of the vertical projection of the second chamfer 243 on the bottom edge 20 is about 1.79 mm, which is greater than 50% of 2.73 mm. In this embodiment, the first chamfer 213 and the second chamfer 243 are configured in this way, so that when the docking element 2 is inserted into the slot 111 at a certain tilted angle (the maximum tilted angle allowed in this embodiment is 25° between the bottom edge 20 and the bottom surface of the slot 111, and the present invention is not limited to this), the first chamfer 213 and the second chamfer 243 provide a certain amount of clearance space for the conductive terminal 12 to prevent the first contact pad 21 from being too close to the negative terminal 12n when contacting the positive terminal 12p, thereby preventing a short circuit. The height difference D6 between the first bottom edge 212 and the bottom edge 20 is equal to the height difference D6 between the second bottom edge 242 and the bottom edge 20. To further prevent short circuit, the height difference D6 between the first bottom edge 212, the second bottom edge 242 and the bottom edge 20 is greater than the height difference D2 between the bottom end and the top end of the contact portion 1231. This design prevents the first contact pad 21 from contacting the negative terminal group first and then the positive terminal group when the contact portion 1231 is inserted at an angle, and also prevents the second contact pad 24 from contacting the positive terminal group first and then the negative terminal group when the contact portion 1231 is inserted at an angle. In this embodiment, the height difference D6 between the first bottom edge 212 and the bottom edge 20 is equal to the height difference D6 between the second bottom edge 242 and the bottom edge 20, which is approximately equal to 2.8 mm.
[0040] Figure 8 and Fig. 9 FIG. 2 is a schematic diagram of the docking element 2 of this embodiment being inserted into the slot 111 at the maximum allowable tilt angle. Figure 8 and Fig. 9As shown, when the docking element 2 is inserted into the slot 111 at the maximum allowable inclination angle, the angle θ between the bottom edge 20 and the bottom surface of the slot 111 is equal to 25°. Since the original height difference D6 between the first bottom edge 212 and the bottom edge 20 is equal to the original height difference D6 between the second bottom edge 242 and the bottom edge 20, which is approximately equal to 2.8 mm, and is greater than the height difference D2 between the bottom and the top of the contact portion 1231, which is approximately 2.6 mm, the first contact pad 21 will pass above the negative terminal group when obliquely inserted, and will not contact the negative terminal 12n, avoiding the possibility of contacting the positive terminal 12p and the negative terminal 12n at the same time. When the docking element 2 reaches the maximum oblique insertion depth (approximately equal to the sine value of the inclination angle multiplied by the longitudinal length of the bottom edge 20), the first chamfer 213 is clearly isolated from the negative terminal group, and the distance D7 between the first chamfer 213 and the negative terminal group is greater than the distance D5 between the first side edge 211 and the second side edge 241, so the first contact pad 21 is fully isolated from the negative terminal 12n, avoiding contact short circuit or even arcing to generate leakage current that burns the electrical connector assembly. Since the docking element 2 is basically symmetrical and the electrical connector 1 is basically symmetrical, the second contact pad 24 is first inserted obliquely without exceeding the maximum allowable inclination angle, and short circuit will not be caused.
[0041] like Fig.10 As shown, in another embodiment, the first anti-short circuit structure and the second anti-short circuit structure are both insulating coatings. In this embodiment, the first insulating coating 291 covers a portion of the first side edge 211, a portion of the first bottom edge 212, and a portion of the first contact pad 21 therebetween, and the second insulating coating 292 covers a portion of the second side edge 241, a portion of the second bottom edge 242, and a portion of the second contact pad 24 therebetween. In this embodiment, the angle between the hypotenuse of the first insulating coating 291 and the covered first side edge 211 is greater than 20°, the length D3' of the covered first bottom edge 212 is greater than 50% of the distance D5 between the first side edge 211 and the second side edge 241, the angle α' between the hypotenuse of the second insulating coating 292 and the covered second side edge 241 is greater than 20°, and the length D4' of the covered second bottom edge 242 is greater than 50% of the distance D5 between the first side edge 211 and the second side edge 241. With such a configuration, short circuit can be prevented even when the maximum inclined insertion angle is 25°.
[0042] The specific size parameters of the first anti-short circuit structure and the second anti-short circuit structure mentioned in the first embodiment and the second embodiment, as well as the specific height difference between the first bottom edge 212, the second bottom edge 242 and the bottom edge 20, are all values that can better achieve the technical effect of preventing short circuit when the maximum inclined insertion angle is 25°. In other embodiments where the maximum inclined insertion angle is not equal to 25°, the utility model is not limited to this.
[0043] In summary, the electrical connector assembly of the utility model has the following beneficial effects:
[0044] (1) Even if the docking element 2 is inserted into the slot 111 at an angle in the longitudinal direction, the first contact pad 21 will only contact the positive terminal group but not the negative terminal group, and the second contact pad 24 will only contact the negative terminal group but not the positive terminal group, thereby preventing the positive and negative poles from short-circuiting and causing an excessive short-circuit current to burn out the electrical connector assembly; and when the docking element 2 reaches the maximum insertion depth in an inclined state (approximately equal to the sine value of the inclination angle multiplied by the longitudinal length of the portion of the docking element 2 inserted into the slot 111), the first anti-short-circuit structure or the second anti-short-circuit structure (for example, the first chamfer 213 or the second chamfer 243) can ensure that the first contact pad 21 maintains a sufficient insulation distance from the negative terminal 12n, and the second contact pad 24 maintains a sufficient insulation distance from the positive terminal 12p, thereby preventing the positive and negative poles from short-circuiting and causing an excessive short-circuit current to burn out the electrical connector assembly.
[0045] (2) Since the original height difference D6 between the first bottom edge 212 and the bottom edge 20 is equal to the original height difference D6 between the second bottom edge 242 and the bottom edge 20, which is approximately equal to 2.8 mm, and is greater than the height difference D2 between the contact portion 1231 and the top of the conductive terminal 12, which is approximately 2.6 mm, the first contact pad 21 will pass over the negative terminal group during oblique insertion and will not contact the negative terminal 12n. When the docking element 2 reaches the maximum oblique insertion depth (approximately equal to the sine value of the inclination angle multiplied by the longitudinal length of the portion of the docking element 2 inserted into the slot 111), the first chamfer 213 is clearly isolated from the negative terminal group, and the distance D7 between the first chamfer 213 and the negative terminal group is greater than the distance D5 between the first side edge 211 and the second side edge 241, so the first contact pad 21 is fully isolated from the negative terminal 12n to avoid arcing.
[0046] (3) The first inner conductive layer 23 and the conductive through hole 27 can be connected in series with two first conductive layers 22 separated on the same plane, and the second inner conductive layer 26 and the conductive through hole 27 can be connected in series with two second conductive layers 25 separated on the same plane. The two first inner conductive layers 23 and the two second inner conductive layers 26 enable the docking element 2 to carry a larger current. The two positive cables 3 and the two negative cables 4 enable the docking element 2 to carry a larger current.
[0047] (4) The neck 122 enables the two contact arms 123 to follow the deflection of the docking component 2 in the thickness direction, thereby maintaining the two contact arms 123 in stable contact with the docking component 2, thereby avoiding the problem of poor contact caused by one of the contact arms 123 being able to tilt and deflect along with the docking component 2 while the other contact arm 123 is unable to deflect synchronously during the process of the docking component 2 being obliquely inserted into the slot 111.
[0048] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.
Claims
1. An electrical connector assembly, characterized in that: include: An electrical connector, comprising an insulating body, wherein the insulating body is concave from top to bottom with a slot, the slot extending in a longitudinal direction, a plurality of conductive terminals arranged in the slot at intervals along the longitudinal direction, and the plurality of conductive terminals comprising a positive terminal group formed by a plurality of positive terminals arranged in succession and a negative terminal group formed by a plurality of negative terminals arranged in succession, the positive terminal group and the negative terminal group being arranged adjacently in the longitudinal direction; A docking element is inserted into the slot from top to bottom, at least one surface of the docking element is provided with at least one first contact pad and at least one second contact pad adjacent to each other along the longitudinal direction, the first contact pad is in contact with the positive terminal group, and a first anti-short circuit structure is provided at the lower end of the first contact pad on a side close to the second contact pad, the second contact pad is in contact with the negative terminal group, and a second anti-short circuit structure is provided at the lower end of the second contact pad on a side close to the first contact pad.
2. The electrical connector assembly according to claim 1, wherein: The distance between the positive terminal closest to the negative terminal group in the positive terminal group and the negative terminal closest to the positive terminal group in the negative terminal group is greater than the distance between any two adjacent positive terminals or the distance between any two negative terminals.
3. The electrical connector assembly according to claim 1, wherein: Each surface of the docking element opposite to each other in the thickness direction has two separated first contact pads, the two first contact pads on the same surface extend outward from the slot along the plane where they are located to form two separated first conductive layers, the first conductive layers are covered by a solder resist layer, the docking element has at least one first inner conductive layer located between two first conductive layers, the docking element also has a plurality of conductive through holes penetrating the docking element in the thickness direction, a portion of the conductive through holes connect the two first conductive layers facing each other and the first inner conductive layer located between the two first conductive layers in the thickness direction; Each surface of the docking element opposite to each other in the thickness direction has two separated second contact pads, and the two second contact pads on the same surface extend outside the slot along the plane where they are located to form two separated second conductive layers, and the second conductive layers are covered by the solder resist layer. The docking element has at least one second inner conductive layer located between two second conductive layers, and in the thickness direction, another part of the conductive through holes connects the two second conductive layers facing each other and the second inner conductive layer located between the two second conductive layers.
4. The electrical connector assembly according to claim 3, wherein: The docking element also has a plurality of mounting through holes arranged along the thickness direction, wherein two of the mounting through holes penetrate the two stacked first conductive layers and the first inner conductive layer, and the other two of the mounting through holes penetrate the two stacked second conductive layers and the second inner conductive layer. The docking element also includes two positive cables and two negative cables, wherein the two positive cables are connected to at least one of the first conductive layers, and the two negative cables are connected to at least one of the second conductive layers.
5. The electrical connector assembly according to claim 1, wherein: The first anti-short circuit structure and the second anti-short circuit structure may be chamfers or insulating coatings.
6. The electrical connector assembly according to claim 1, wherein: Each of the front and rear opposing surfaces of the docking element has the first contact pad and the second contact pad spaced apart from each other, each of the conductive terminals has a fixed portion, a neck extending upward from the fixed portion and two contact arms extending upward from the neck, the neck can swing along the thickness direction of the docking element, the two contact arms have two contact portions protruding into the slot, the two contact portions of each conductive terminal contact with the first contact pad or the second contact pad on both sides of the docking element to form an electrical connection, and the protrusion distance of each contact portion relative to the inner side wall of the slot is greater than 0.2 mm.
7. The electrical connector assembly according to claim 1, wherein: Each of the conductive terminals has a contact arm extending upward, and the top of the contact arm has a contact portion, and the contact portion has a contact edge and a guide edge facing the docking element in the slot, and the contact edge contacts the first contact pad or the second contact pad to form an electrical connection, the first contact pad has a first bottom edge close to the bottom edge of the docking element, and the second contact pad has a second bottom edge close to the bottom edge of the docking element, and the height difference between the first bottom edge and the bottom edge is equal to the height difference between the second bottom edge and the bottom edge, and is greater than the height difference between the bottom end and the top end of the contact portion.
8. An electrical connector assembly, characterized in that: include: An electrical connector, comprising an insulating body, wherein the insulating body is concave from top to bottom with a slot, the slot extending in a longitudinal direction, a plurality of conductive terminals arranged in the slot at intervals along the longitudinal direction, and the plurality of conductive terminals comprising a positive terminal group formed by a plurality of positive terminals arranged in succession and a negative terminal group formed by a plurality of negative terminals arranged in succession, the positive terminal group and the negative terminal group being arranged adjacently in the longitudinal direction; A docking element is inserted into the slot from top to bottom, a surface of the docking element has at least one first contact pad and at least one second contact pad arranged along the longitudinal direction, the first contact pad is in contact with the positive terminal group, and the first contact pad has a first side edge close to the second contact pad, a first bottom edge close to the bottom edge of the docking element, and a first chamfer connecting the first side edge and the first bottom edge, the second contact pad is in contact with the negative terminal group, and the second contact pad has a second side edge close to the first contact pad, a second bottom edge close to the bottom edge of the docking element, and a second chamfer connecting the second side edge and the second bottom edge.
9. The electrical connector assembly according to claim 8, wherein: Each surface of the docking element opposite to each other in the thickness direction has two separated first contact pads, and the two first contact pads on the same surface extend outside the slot along the plane where they are located to form two separated first conductive layers, and the first conductive layer is covered by a solder resist layer. The docking element has at least one first inner conductive layer located between two first conductive layers, and the first inner conductive layer is stacked with the first conductive layers on the two planes in the thickness direction of the docking element. The docking element also has a plurality of conductive through holes penetrating the docking element in the thickness direction, and a part of the conductive through holes connect the two first conductive layers facing each other and the first inner conductive layer located between the two first conductive layers in the thickness direction, and the first inner conductive layer extends between the two first contact pads on the two surfaces.
10. The electrical connector assembly according to claim 8, wherein: The angle of the first chamfer is greater than 20°, and the projected length of the first chamfer on the bottom edge is greater than 50% of the distance between the first side edge and the second side edge. The angle of the second chamfer is greater than 20°, and the projected length of the second chamfer on the bottom edge is greater than 50% of the distance between the first side edge and the second side edge.