A blade contact jack structure

Abstract

The application discloses a piece contact plug-in structure, which comprises a spring piece and a clamping shell, the spring piece is arranged in the clamping shell, the spring piece comprises an upper spring piece and a lower spring piece which are arranged in an up-down mode and form a plug-in slot, the upper spring piece and the lower spring piece each comprise a spring piece base body, the spring piece base body is provided with a first cantilever and a second cantilever, the second cantilever is located in a different height plane from the first cantilever, the gap between the first cantilever and the second cantilever is infinitely reduced to zero, the number of cantilevers is increased, the number of contact points is increased, the conductive performance is improved, the conductive performance is improved, the width of the spring piece base body is fully utilized, the spring piece body resistance is reduced, the current carrying capacity of the spring piece is improved, and the problem that in the prior art piece contact, the number of cantilevers and the spring piece body resistance value are fixed without increasing the width of the spring piece base body, the conductive performance and the current carrying capacity are fixed, and the conductive performance and the current carrying capacity cannot be improved is solved.

Description

Technical Field

[0001] This invention relates to the technical field of electric vehicle connectors, and in particular to a plate-type contact socket structure. Background Technology

[0002] Contacts are key components of electrical connectors, responsible for their core function of carrying current. As the current-carrying capacity requirements of electrical connectors continue to increase, the size of contacts may need to grow, which restricts the development of electrical connectors. At the same time, low cost is a major trend for both new energy vehicles and electrical connectors. Plate contacts offer advantages such as simple structure, low cost, and high reliability. Therefore, there is a need for a small-sized plate contact with high current-carrying capacity.

[0003] Chinese patent CN215645102U discloses a low-current dual-ended plate-type socket structure, including an external support member, an internal spring sheet installed inside the external support member with both ends for mating with an adapter plate-type pin, and a fixing component on the external support member that cooperates with the external housing to limit the overall socket structure. This patent allows for mating with pins at both ends, and the number of cantilever arms on the spring sheet base and the gap between the two cantilever arms are existing technology settings.

[0004] In existing plate contactors, the gaps between cantilevers on the spring substrate are usually constant and greater than the thickness of the cantilevers. Increasing the number of cantilevers and reducing the resistance of the spring substrate are achieved by increasing the width of the spring substrate. If the width of the spring substrate cannot be increased, the number of cantilevers and the resistance of the spring substrate are generally fixed values. However, if the width of the spring substrate is not increased, but the gaps between the cantilevers are reduced, the number of cantilevers can be increased, the number of cantilever contact points can be increased, the resistance of the spring substrate can be reduced, the conductivity can be effectively improved, and the current carrying capacity can be increased accordingly. Therefore, there is an urgent need for a solution that can increase the number of cantilevers and thus improve the current carrying capacity by making full use of the width of the spring substrate and reducing the gaps between the cantilevers without increasing the width of the spring substrate. Summary of the Invention

[0005] To address the shortcomings in the aforementioned background technology, this invention proposes a plate-type contact socket structure, which solves the problem that in existing plate-type contacts, without increasing the width of the spring base, the number of cantilever arms and the resistance value of the spring body are fixed, resulting in fixed conductivity and current carrying capacity, and thus the conductivity and current carrying capacity cannot be improved.

[0006] The technical solution of the present invention is implemented as follows: a plate-type contact socket structure includes a spring and a clamping housing. The spring is disposed inside the clamping housing. The spring includes an upper spring and a lower spring arranged vertically to form a slot. Both the upper and lower springs include a spring base and a cantilever assembly. At least two cantilever assemblies are provided on the spring base. The cantilever assembly includes a first cantilever and a second cantilever. A second cantilever is provided between two adjacent first cantilevers. The second cantilever is bent at the connection between it and the spring base so that the second cantilever and the first cantilever are at different height planes.

[0007] The first and second cantilever are connected by a tearing method to form a seamless cantilever structure in the plane; support plates are provided on both sides of the upper spring and both sides of the lower spring.

[0008] The second cantilever end is provided with a T-shaped bend, and the first cantilever end is provided with a second bend. The T-shaped bend and the second bend are located at different height planes.

[0009] The first cantilever and the second bend are connected by a groove, and one end of the T-shaped bend on the upper spring is provided with the second cantilever; the other end of the T-shaped bend on the upper spring protrudes and extends into the groove on the lower spring.

[0010] The distance between the arc axis of the T-shaped bend and the arc axis of the second bend is H. The outer protrusions of the T-shaped bend and the second bend are on the same plane. The T-shaped bend on the upper spring and the outer protrusion of the second bend on the lower spring form the lower contact surface of the slot, and the T-shaped bend on the lower spring and the outer protrusion of the second bend on the upper spring form the upper contact surface of the slot. The slot is engaged with the pin, with the upper contact surface of the slot contacting the top surface of the pin and the lower contact surface of the slot contacting the bottom surface of the pin.

[0011] The second cantilever end has an L-shaped bend, and the first cantilever end has a first bend. The L-shaped bend and the first bend are on different height planes, and the L-shaped bend on the upper spring and the first bend on the lower spring are on the same plane.

[0012] The distance between the arc axis of the L-shaped bend and the arc axis of the first bend is D. The outer protrusions of the L-shaped bend and the first bend are on the same plane. The outer protrusions of the T-shaped bend on the upper spring and the second bend on the lower spring form the lower contact surface of the slot. The outer protrusions of the T-shaped bend on the lower spring and the second bend on the upper spring form the upper contact surface of the slot. The slot is engaged with the pin. The upper contact surface of the slot contacts the top surface of the pin, and the lower contact surface of the slot contacts the bottom surface of the pin.

[0013] The clamping housing includes a housing base and housing cantilever arms. The housing base is provided with housing cantilever arms that contact the cantilever arm assembly and provide positive pressure to the cantilever arm assembly. Each housing cantilever arm corresponds to one of the cantilever arm assemblies. The housing cantilever arms are provided with housing cantilever arm bends corresponding to L-shaped bends.

[0014] The outer shell base includes a first outer shell base and a second outer shell base arranged vertically, and the first outer shell base and the second outer shell base are connected by an outer shell support plate; both the first outer shell base and the second outer shell base are provided with a snap-fit ​​interface, and the spring base is provided with a protrusion, which is snapped into place with the snap-fit ​​interface.

[0015] The present invention provides a method where the second cantilever is bent at the connection point with the spring substrate, placing the first and second cantilevers at different heights. This is equivalent to compressing the cantilever on the spring substrate, forming two cantilevers with upper and lower planes. At this point, the width of the spring substrate also decreases. In this case, if the width of the spring substrate remains constant, the number of cantilevers would increase significantly. This clever use of height difference increases the number of cantilevers, thus increasing the number of contact points and improving conductivity. It also fully utilizes the width of the spring substrate, reducing the spring body resistance and increasing the current-carrying capacity without increasing the spring substrate width. This solves the problem in existing plate contacts where, without increasing the spring substrate width, the number of cantilevers and the spring body resistance are fixed, resulting in fixed conductivity and current-carrying capacity, which cannot be improved.

[0016] This invention, while keeping the width of the reed substrate constant, infinitely reduces the gap between the first and second cantilever arms to zero. This reduction in cantilever gap, without increasing the width of the reed substrate, increases the number of cantilever arms, resulting in more contact points and improved conductivity. It fully utilizes the width of the reed substrate, reducing the reed body resistance and increasing the reed's current-carrying capacity without increasing the substrate width. This solves the problem in existing technologies where, without increasing the reed substrate width, the number of cantilever arms and the reed body resistance are fixed, leading to fixed conductivity and current-carrying capacity, thus preventing improvements in conductivity and current-carrying capacity.

[0017] The first and second cantilever bends of this invention are divided into two layers along the cantilever extension direction, which can effectively reduce the insertion force when the pin is inserted. The outer protrusions of the first and second cantilever bends are on the same plane, that is, the contact points of the first and second cantilever bends with the pin are on the same height plane, which avoids obstructing the insertion of the terminal. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the interaction between the present invention and the pin in Example 1.

[0020] Figure 2 This is a perspective view of the present invention in Example 1.

[0021] Figure 3 This is a schematic diagram of the reed of the present invention in Example 1.

[0022] Figure 4 This is a schematic diagram of the lower spring of the present invention in Embodiment 1.

[0023] Figure 5 This is a side view of the lower spring of the present invention in Embodiment 1.

[0024] Figure 6 This is a schematic diagram of the outer casing of the present invention in Embodiment 1.

[0025] Figure 7 This is a schematic diagram of the interaction between the present invention and the pin in Example 2.

[0026] Figure 8 This is a perspective view of the present invention in Example 2.

[0027] Figure 9 This is a schematic diagram of the reed of the present invention in Example 2.

[0028] Figure 10 This is a schematic diagram of the lower spring of the present invention in Embodiment 2.

[0029] Figure 11 This is a top view of the lower spring of the present invention in Embodiment 2.

[0030] Figure 12 This is a side view of the lower spring of the present invention in Embodiment 2.

[0031] Figure 13 This is a schematic diagram of the interaction between the present invention and the pin in Example 3.

[0032] Figure 14 This is an exploded view of the present invention in Example 3.

[0033] Figure 15 This is a schematic diagram of the reed of the present invention in Example 3.

[0034] Figure 16 This is a schematic diagram of the lower spring of the present invention in Embodiment 3.

[0035] Figure 17 This is a top view of the lower spring of the present invention in Embodiment 3.

[0036] Figure 18 This is a side view of the lower spring of the present invention in Embodiment 3.

[0037] Figure 19 This is a schematic diagram of the outer casing of the present invention in Embodiment 3.

[0038] In the figure, 1 is the spring base, 11 is the protrusion, 2 is the cantilever assembly, 21 is the first cantilever, 211 is the first bend, 212 is the second bend, 22 is the second cantilever, 221 is the L-shaped bend, 222 is the T-shaped bend, 23 is the groove, 3 is the pin, 4 is the outer shell base, 41 is the first outer shell base, 42 is the second outer shell base, 43 is the card interface, 5 is the outer shell cantilever, 51 is the outer shell cantilever bend, 6 is the support plate, 7 is the slot, 8 is the rivet, 9 is the connecting piece, and 10 is the outer shell support plate. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] like Figure 1 and Figure 2As shown in Embodiment 1, a sheet contact socket structure includes a spring and a locking housing. The spring is disposed inside the locking housing and engages with the locking housing. The spring includes an upper spring and a lower spring arranged vertically to form a slot 7. Preferably, the upper and lower springs have similar structures and are supported vertically opposite each other. Both the upper and lower springs include a spring base 1 and a cantilever assembly 2. At least two cantilever assemblies 2 are provided on both sides of the spring base 1, preferably four cantilever assemblies 2 on both sides of the spring base 1. The cantilever assembly 2 includes a first cantilever 21 and a second cantilever 22. A second cantilever 22 is provided between two adjacent first cantilever 21s. The second cantilever 22 is bent at the connection point with the spring base 1 so that the second cantilever 22 and the first cantilever 21 are at different height planes. The second cantilever 22 provided by this invention is bent at the connection point with the spring base 1 so that the first cantilever 21 and the second cantilever 22 are at different height planes. This is equivalent to compressing the cantilever on the reed base 1, forming two cantilevers on the upper and lower planes. At this time, the width of the reed base 1 is also reduced. In this case, if the width of the reed base 1 remains unchanged, the number of cantilevers increases, the number of contact points increases, and the conductivity is improved. This fully utilizes the width of the reed base 1, reduces the reed body resistance without increasing the width of the reed base 1, and improves the current carrying capacity of the reed. This solves the problem in existing plate contact components where, without increasing the width of the reed base, the number of cantilevers and the reed body resistance are fixed, resulting in fixed conductivity and current carrying capacity, and the inability to improve conductivity and current carrying capacity.

[0041] like Figure 3 and Figure 4 As shown, the first cantilever 21 and the second cantilever 22 are separated using a tearing process to form a seamless in-plane cantilever structure. The second cantilever 22 is bent using a bending process to form a bent structure, placing it at a different height from the first cantilever 21. Because the first cantilever 21 and the second cantilever 22 are separated using a tearing process, no material is lost during separation. The gap formed by the tearing between the first cantilever 21 and the second cantilever 22 approaches zero infinitely. Therefore, when the second cantilever 22 is restored to the same height as the first cantilever 21, and the first cantilever 21 and the second cantilever 22 are on the same plane, the plane is seamless. Thus, the tearing process forms a seamless in-plane cantilever structure between the first cantilever 21 and the second cantilever 22. This seamless in-plane cantilever structure can also be achieved using other processes, such as laser cutting. In this case, the first cantilever 21 and the second cantilever 22 are separated using laser cutting, and no material is lost during separation. The gap formed by the tearing between the first cantilever 21 and the second cantilever 22 approaches zero infinitely.

[0042] like Figure 3As shown, spring support plates 6 are provided on both sides of the upper spring and both sides of the lower spring. The support plates 6 are welded to both sides of the upper spring, and the welded parts are rounded. The support plates 6 of the upper spring and the support plates 6 of the lower spring support each other. During installation, after the support plates 6 of the lower spring and the support plates 6 of the upper spring support each other, they are inserted into the clamping shell. The support plates 6 of the upper spring and the support plates 6 of the lower spring support each other, and the upper and lower springs are limited and fixed by the shell.

[0043] like Figure 5 As shown, the second cantilever 22 has a T-shaped bend 222 at its end. The T-shaped bend 222 refers to a bend with a T-shaped shape. The T-shaped bend 222 is located at the end of the second cantilever 22 away from the spring base 1. The first cantilever 21 has a second bend 212 at its end. The T-shaped bend 222 and the second bend 212 are on different height planes. A groove 23 is provided at the connection between the first cantilever 21 and the second bend 212. One end of the T-shaped bend 222 on the upper spring is connected to the second cantilever 22; the other end of the T-shaped bend 222 on the upper spring protrudes and extends into the groove 23 on the lower spring. The second bend 212 also provides support for the T-shaped bend 222. The distance between the arc axis of the T-shaped bend 222 and the arc axis of the second bend 212 is H, preferably H is 1.2mm. The T-shaped bend 222 and the second bend 212 of this invention are divided into two layers along the cantilever extension direction, which can effectively reduce the insertion force when the pin 3 is inserted. The outer protrusions of the T-shaped bend 222 and the second bend 212 are on the same plane. The T-shaped bend 222 on the upper spring and the outer protrusions of the second bend 212 on the lower spring form the lower contact surface of the slot 7, and the T-shaped bend 222 on the lower spring and the outer protrusions of the second bend 212 on the upper spring form the upper contact surface of the slot 7. The slot 7 is inserted into the pin 3, with the upper contact surface of the slot 7 contacting the top surface of the pin 3 and the lower contact surface of the slot 7 contacting the bottom surface of the pin 3. That is, the contact points of the T-shaped bend 222 and the second bend 212 with the pin 3 are on the same height plane, avoiding obstruction of the insertion of the pin 3.

[0044] like Figure 6 As shown, the clamping housing includes a housing base 4 and housing cantilever 5. The housing base 4 is provided with housing cantilever 5 that contacts the cantilever assembly 2 and provides positive pressure to the cantilever assembly 2. Housing cantilever 5 is provided on both sides of the housing base 4, and the housing cantilever 5 corresponds one-to-one with the first cantilever 21. The housing cantilever 5 provides inward pressure to the first cantilever 21, and the first cantilever 21 on the upper spring provides inward pressure to the second cantilever 22 on the lower spring, so that the contact points of the first cantilever 21 on the upper spring and the second cantilever 22 on the lower spring with the pin 3 are in the same height plane.

[0045] like Figure 2 and Figure 6As shown, the outer shell base 4 includes a first outer shell base 41 and a second outer shell base 42 arranged vertically, connected by an outer shell support plate 10. Both the first outer shell base 41 and the second outer shell base 42 are provided with snap-fit ​​interfaces 43, and the spring base 1 is provided with a protrusion 11, which engages with the snap-fit ​​interface 43. The spring is secured to the outer shell by the snap-fit ​​engagement of the protrusion 11 and the snap-fit ​​interface 43. Outer shell support plates 10 are welded to both sides of the first outer shell base 41 and the second outer shell base 42, and are welded or bonded to each other.

[0046] In Example 1, multiple upper spring plates with zero gap between the first cantilever 21 and the second cantilever 22 are manufactured using a tearing process. Then, the second cantilever 22 on the upper spring plate is bent, and a protrusion 11 is stamped out of the upper spring plate. Support plates 6 are welded to both sides of the upper spring plate. The structure of the lower spring plate is similar to that of the upper spring plate. The support plates 6 of the upper spring plate and the support plates 6 of the lower spring plate support each other. Then, multiple upper shells are stamped. Preferably, the upper shell and the lower shell have the same structure. A snap-fit ​​interface 43 is stamped out on the first shell base 41. Shell support plates 10 are welded to both sides of the first shell base 41. The two upper shells are snapped together, and the shell support plates 10 of the first shell base 41 and the shell support plates 10 of the second shell base 42 are welded together to form a snap-fit ​​shell. Then, the opposing lower spring plates and the upper spring plates are inserted into the snap-fit ​​shell together, and the protrusion 11 is inserted into the snap-fit ​​interface 43. The protrusion 11 and the snap-fit ​​interface 43 are snapped together, thus completing the assembly of Example 1 of the present invention.

[0047] like Figures 7 to 12 The illustrated embodiment 2 differs from embodiment 1 in that at least two cantilever assemblies 2 are provided on one side of the spring base 1, preferably four cantilever assemblies 2, and a shell cantilever 5 is provided on one side of the shell base 4. In embodiment 2, springs are placed on both sides of the outer side of the connecting piece 9, and a clamping shell is placed on the outer surface of the springs. Then, the clamping shell, springs, and connecting piece 9 are fixed together by riveting, thus completing the assembly of embodiment 2 of the present invention.

[0048] like Figures 13 to 19 The embodiment shown in Embodiment 3 differs from Embodiment 2 in that the end of the second cantilever 22 is provided with an L-shaped bend 221. The L-shaped bend 221 refers to a bend with an L-shaped shape. The L-shaped bend 221 is located at the end of the second cantilever 22 away from the spring base 1. The end of the first cantilever 21 is provided with a first bend 211. The L-shaped bend 221 and the first bend 211 are on different height planes. A slot 7 for inserting the pin 3 is formed between the L-shaped bend 221 and the first bend 211 on the upper spring. The L-shaped bend 221 on the upper spring and the first bend 211 on the lower spring are on the same plane.

[0049] like Figure 18 As shown, the distance between the arc axis of the L-shaped bend 221 and the arc axis of the first bend 211 is D, preferably D is 0.6mm. The protruding points of the L-shaped bend 221 and the first bend 211 are on the same plane. That is, the contact points of the L-shaped bend 221 and the first bend 211 with the pin 3 are on the same height plane, which avoids obstructing the insertion of the pin 3.

[0050] like Figure 19 As shown, the outer shell cantilever 5 is provided with an outer shell cantilever bend 51 corresponding to the L-shaped bend 221. The outer shell cantilever bend 51 presses against the L-shaped bend 221, so that the L-shaped bend 221 and the first bend 211 are at the same height plane, thus avoiding obstruction of the insertion of the pin 3 when it is inserted.

[0051] In Example 3, spring sheets are placed on both sides of the outer side of the connecting piece 9, and a clamping shell is placed on the outer surface of the spring sheets. Then, the clamping shell, spring sheets and connecting piece 9 are fixed together by riveting, thus completing the assembly of Example 3 of the present invention.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plate-type contact socket structure, comprising a spring and a locking housing, wherein the spring is disposed within the locking housing, characterized in that, The spring includes an upper spring and a lower spring with slots (7) arranged vertically. Both the upper and lower springs include a spring base (1) and a cantilever assembly (2). The spring base (1) is provided with at least two cantilever assemblies (2). The cantilever assembly (2) includes a first cantilever (21) and a second cantilever (22). A second cantilever (22) is provided between two adjacent first cantilever (21). The second cantilever (22) is bent at the connection between it and the spring base (1) so that the second cantilever (22) and the first cantilever (21) are at different height planes. The second cantilever (22) on the upper spring supports the first cantilever (21) on the lower spring, and the second cantilever (22) on the lower spring supports the first cantilever (21) on the upper spring.

2. The plate-type contact socket structure according to claim 1, characterized in that: The first cantilever (21) and the second cantilever (22) form a seamless cantilever structure in the plane by tearing; support plates (6) are provided on both sides of the upper spring and both sides of the lower spring.

3. The plate-type contact socket structure according to claim 1 or 2, characterized in that: The second cantilever (22) has a T-shaped bend (222) at its end, and the first cantilever (21) has a second bend (212) at its end. The T-shaped bend (222) and the second bend (212) are located at different height planes.

4. The plate-type contact socket structure according to claim 3, characterized in that: The first cantilever (21) and the second bend (212) are connected by a groove (23), and one end of the T-shaped bend (222) on the upper spring is provided with a second cantilever (22); the other end of the T-shaped bend (222) on the upper spring protrudes and extends into the groove (23) on the lower spring.

5. The plate-type contact socket structure according to claim 4, characterized in that: The distance between the arc axis of the T-shaped bend (222) and the arc axis of the second bend (212) is H. The protruding points of the T-shaped bend (222) and the second bend (212) are on the same plane. The T-shaped bend (222) on the upper spring and the protruding points of the second bend (212) on the lower spring form the lower contact surface of the slot (7). The T-shaped bend (222) on the lower spring and the protruding points of the second bend (212) on the upper spring form the upper contact surface of the slot (7). The slot (7) is inserted into the pin (3). The upper contact surface of the slot (7) contacts the top surface of the pin (3), and the lower contact surface of the slot (7) contacts the bottom surface of the pin (3).

6. The plate-type contact socket structure according to claim 1 or 2, characterized in that: The second cantilever (22) has an L-shaped bend (221) at its end, and the first cantilever (21) has a first bend (211) at its end. The L-shaped bend (221) and the first bend (211) are on different height planes, and the L-shaped bend (221) on the upper spring and the first bend (211) on the lower spring are on the same plane.

7. The plate-type contact socket structure according to claim 6, characterized in that: The distance between the arc axis of the L-shaped bend (221) and the arc axis of the first bend (211) is D. The outer protrusions of the L-shaped bend (221) and the first bend (211) are on the same plane. The outer protrusions of the T-shaped bend (222) on the upper spring and the second bend (212) on the lower spring form the lower contact surface of the slot (7). The outer protrusions of the T-shaped bend (222) on the lower spring and the second bend (212) on the upper spring form the upper contact surface of the slot (7). The slot (7) is inserted into the pin (3). The upper contact surface of the slot (7) contacts the top surface of the pin (3), and the lower contact surface of the slot (7) contacts the bottom surface of the pin (3).

8. The plate-type contact socket structure according to any one of claims 1 to 2, 4, 5, and 7, characterized in that: The clamping shell includes a shell base (4) and a shell cantilever (5). The shell base (4) is provided with a shell cantilever (5) that contacts the cantilever group (2) and provides positive pressure to the cantilever group (2). The shell cantilever (5) corresponds one-to-one with the cantilever group (2).

9. The plate-type contact socket structure according to claim 8, characterized in that: The outer shell cantilever (5) is provided with an outer shell cantilever bend (51) corresponding to the L-shaped bend (221).

10. The plate-type contact socket structure according to claim 8, characterized in that: The outer shell base (4) includes a first outer shell base (41) and a second outer shell base (42) arranged vertically. The first outer shell base (41) and the second outer shell base (42) are connected by an outer shell support plate (10). The first outer shell base (41) and the second outer shell base (42) are both provided with a card interface (43). The spring base (1) is provided with a protrusion (11). The protrusion (11) is engaged with the card interface (43).

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