A high-stability automotive high-voltage DC connector terminal

Abstract

This utility model discloses a highly stable vehicle-mounted high-voltage DC connector terminal, comprising a copper elastic terminal and a stainless steel housing. The copper elastic terminal includes a socket portion, a fixing portion, and a wiring portion connected sequentially from front to back. The stainless steel housing is located outside the socket portion and the fixing portion of the copper elastic terminal. The socket portion of the copper elastic terminal includes an upper spring and a lower spring, which are positioned vertically opposite each other. The upper spring has an upper lip segment, and the lower spring has a lower lip segment. An upper support plate is provided at the upper front end of the stainless steel housing, extending above the upper lip segment of the corresponding upper spring. A lower support plate is provided at the lower front end of the stainless steel housing, extending above the lower lip segment of the corresponding lower spring. This utility model has good shock resistance, limiting the maximum upward rebound of the upper spring and the maximum downward rebound of the lower spring when vibration occurs, avoiding poor contact between the upper and lower springs and the external terminals, and exhibiting high structural and performance stability.

Description

Technical Field

[0001] This utility model relates to the field of connector terminal technology, and in particular to a highly stable vehicle-mounted high-voltage DC connector terminal. Background Technology

[0002] Currently, electric vehicles typically use on-board high-voltage DC connector terminals as the electrical connection components for high-voltage current.

[0003] In the prior art, a vehicle-mounted high-voltage DC connector terminal includes a copper elastic terminal and a stainless steel housing. The copper elastic terminal includes a socket portion, a fixing portion, and a wiring portion connected sequentially from front to back. The stainless steel housing is located outside the socket portion and the fixing portion of the copper elastic terminal, and the rear end of the stainless steel housing is fixedly connected to the fixing portion of the copper elastic terminal. The socket portion of the copper elastic terminal includes an upper spring and a lower spring, which are positioned vertically opposite each other. The upper spring has a downwardly curved upper terminal contact section, and an upper lip segment is connected to the front end of the upper terminal contact section. The lower spring has an upwardly curved lower terminal contact section, and a lower lip segment is connected to the front end of the lower terminal contact section. In use, an external terminal can be inserted between the upper terminal contact section and the lower terminal contact section to achieve an electrical connection.

[0004] However, this type of automotive high-voltage DC connector terminal also has the following technical problems: the contact elasticity between the upper and lower springs and the external terminal is generated by the elasticity of the copper material of the upper and lower springs themselves. However, the elasticity of the copper material itself has significant limitations and cannot meet the requirements of high-intensity vibration. When the automotive high-voltage DC connector terminal vibrates significantly with the vehicle body, the upper spring can easily bounce upwards to a large extent, causing the upper terminal contact section of the upper spring to lose contact with the external terminal. Similarly, the lower spring can easily bounce downwards to a large extent, causing the lower terminal contact section of the lower spring to lose contact with the external terminal. This results in poor contact between the upper and lower springs and the external terminal, leading to instability in the structure and performance of the automotive high-voltage DC connector terminal. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a highly stable vehicle-mounted high-voltage DC connector terminal in view of the shortcomings of the prior art. The vehicle-mounted high-voltage DC connector terminal has good anti-vibration performance and can limit the maximum upward spring amplitude of the upper spring and the maximum downward spring amplitude of the lower spring when vibration occurs, so as to avoid the problem of poor contact between the upper spring, the lower spring and the external terminal. It has high structural and performance stability.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A highly stable automotive high-voltage DC connector terminal includes a copper elastic terminal and a stainless steel housing. The copper elastic terminal includes a socket portion, a fixing portion, and a wiring portion connected sequentially from front to back. The stainless steel housing is located outside the socket portion and the fixing portion of the copper elastic terminal, and its rear end is fixedly connected to the fixing portion of the copper elastic terminal. The socket portion of the copper elastic terminal includes an upper spring and a lower spring, which are positioned vertically opposite each other. The upper spring has a downwardly curved upper terminal contact section, the front end of which is connected to an upper lip segment. The lower spring has an upwardly curved lower terminal contact section, the front end of which is connected to a lower lip segment. The upper front end of the stainless steel housing has a downwardly extending upper support plate extending above the upper lip segment of the corresponding upper spring to limit the upward movement of the upper lip segment. The lower front end of the stainless steel housing has an upwardly extending lower support plate extending above the lower lip segment of the corresponding lower spring to limit the downward movement of the lower lip segment.

[0007] Preferably, the lower side of the upper terminal contact section of the upper spring is provided with multiple wavy stripes extending in the front-back direction, and the upper side of the lower terminal contact section of the lower spring is also provided with multiple wavy stripes extending in the front-back direction.

[0008] Preferably, the upper spring includes a first upper spring, a second upper spring, and a third upper spring arranged at intervals, and the lower spring includes a first lower spring, a second lower spring, and a third lower spring arranged at intervals. The upper front end of the stainless steel shell is provided with three upper support plates, which correspond to the first upper spring, the second upper spring, and the third upper spring, respectively. The lower front end of the stainless steel shell is provided with three lower support plates, which correspond to the first lower spring, the second lower spring, and the third lower spring, respectively.

[0009] Preferably, the socket portion of the copper elastic terminal further includes two upper elastic arms and two lower elastic arms. The two upper elastic arms are respectively disposed on the left and right sides of the upper spring plate. The front end of one upper elastic arm is integrally connected to the upper lip segment of the first upper spring plate, and the front end of the other upper elastic arm is integrally connected to the upper lip segment of the third upper spring plate. The two lower elastic arms are respectively disposed on the left and right sides of the lower spring plate. The front end of one lower elastic arm is integrally connected to the lower lip segment of the first lower spring plate, and the front end of the other lower elastic arm is integrally connected to the lower lip segment of the third lower spring plate.

[0010] Preferably, the front end of the stainless steel shell is provided with a plurality of lip protective plates, which are bent inward and extend toward the front side of the corresponding upper lip segment and lower lip segment.

[0011] Preferably, the right side of the fixing part of the copper elastic terminal is provided with an upper positioning slot and a lower positioning slot, and the right side of the rear end of the stainless steel shell is provided with a first upper connecting piece and a first lower connecting piece. The first upper connecting piece is bent inward and extends into the upper positioning slot and wraps around the bottom of the upper positioning slot. The first lower connecting piece is bent inward and extends into the lower positioning slot and wraps around the bottom of the lower positioning slot. The left side of the fixing part of the copper elastic terminal is provided with a fixing hole, and the left side of the rear end of the stainless steel shell is provided with a second upper connecting piece and a second lower connecting piece. The second upper connecting piece is bent inward and extends into the fixing hole and wraps around the upper part of the fixing hole. The second lower connecting piece is bent inward and extends into the fixing hole and wraps around the lower part of the fixing hole. Clearances are provided on the front and rear sides of the second lower connecting piece and the second lower connecting piece, respectively.

[0012] Preferably, the upper side of the fixing part of the copper elastic terminal is provided with a first positioning recess and a first rear positioning slot, and the upper rear end of the stainless steel shell is provided with a first positioning block, a first positioning block and a first positioning baffle. The first positioning block sinks down into the first positioning recess, the first positioning block is inserted down into the first rear positioning slot, and the first positioning baffle bends down and blocks the rear end of the fixing part of the copper elastic terminal. The lower side of the fixing part of the copper elastic terminal is provided with a second positioning recess and a second rear positioning slot, and the lower rear end of the stainless steel shell is provided with a second positioning block, a second positioning block and a second positioning baffle. The second positioning block sinks up into the second positioning recess, the second positioning block is inserted up into the second rear positioning slot, and the second positioning baffle bends up and blocks the rear end of the fixing part of the copper elastic terminal.

[0013] Preferably, an upper elastic wing is connected to the upper middle part of the stainless steel shell, the rear end of which is suspended and extends obliquely upward and backward; a lower elastic wing is connected to the lower middle part of the stainless steel shell, the rear end of which is suspended and extends obliquely downward and backward.

[0014] Preferably, the stainless steel outer shell has a joint at both ends, and the joint is provided with a dovetail-shaped latch welded by laser welding.

[0015] Preferably, the wiring portion of the copper elastic terminal is provided with a wire wrapping piece, and the inner side of the wire wrapping piece is provided with multiple horizontal lines.

[0016] The beneficial effects of this utility model are as follows: Because the upper front part of the stainless steel shell has an upper support plate extending downwards, which extends above the upper lip segment of the corresponding upper spring piece to limit the upward movement of the upper lip segment, and the lower front part of the stainless steel shell has a lower support plate extending upwards, which extends above the lower lip segment of the corresponding lower spring piece to limit the downward movement of the lower lip segment, when the vehicle-mounted high-voltage DC connector terminal vibrates, the upper support plate can limit the maximum upward spring amplitude of the upper spring piece, and the lower support plate can limit the maximum downward spring amplitude of the lower spring piece. This avoids poor contact between the upper terminal contact section of the upper spring piece, the lower terminal contact section of the lower spring piece, and the external terminal, thus giving the vehicle-mounted high-voltage DC connector terminal of this utility model excellent shock resistance and high structural and performance stability. Attached Figure Description

[0017] Figure 1 This is a first-view overall structural diagram of the present invention.

[0018] Figure 2 This is a second-view overall structural diagram of the present invention.

[0019] Figure 3 This is a first-view diagram of the dispersed structure of this utility model.

[0020] Figure 4 This is a second-view diagram of the dispersed structure of this utility model.

[0021] Figure 5 This is a longitudinal sectional view of the present invention. Detailed Implementation

[0022] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. See [link / reference]. Figure 1 The directional coordinates in the text are only for the purpose of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0024] like Figures 1-5As shown, this utility model provides a highly stable vehicle-mounted high-voltage DC connector terminal, including a copper elastic terminal 1 and a stainless steel housing 2. The copper elastic terminal 1 includes a socket portion 11, a fixing portion 12, and a wiring portion 13 connected sequentially from front to back. The stainless steel housing 2 is disposed outside the socket portion 11 and the fixing portion 12 of the copper elastic terminal 1, and the rear end of the stainless steel housing 2 is fixedly connected to the fixing portion 12 of the copper elastic terminal 1. The socket portion 11 of the copper elastic terminal 1 includes an upper spring 111 and a lower spring 112, which are vertically opposite each other. The upper spring 111 has a downwardly bent upper terminal contact section 1114. The front end of the contact segment 1114 is connected to the upper lip segment 1115. The lower spring 112 has an upwardly curved lower terminal contact segment 1124, the front end of which is connected to the lower lip segment 1125. The upper front end of the stainless steel shell 2 is provided with an upper support plate 21 extending downward, which extends above the upper lip segment 1115 of the corresponding upper spring 111 to limit the upper lip segment 1115 from moving upward. The lower front end of the stainless steel shell 2 is provided with an upper support plate 22 extending upward, which extends above the lower lip segment 1125 of the corresponding lower spring 112 to limit the lower lip segment 1125 from moving downward.

[0025] This invention features an upper support plate 21 extending downwards at the upper front end of the stainless steel housing 2, with the upper support plate 21 extending above the upper lip segment 1115 of the corresponding upper spring 111 to limit the upward movement of the upper lip segment 1115. Similarly, a lower support plate 22 extending upwards at the lower front end of the stainless steel housing 2 extends above the lower lip segment 1125 of the corresponding lower spring 112 to limit the downward movement of the lower lip segment 1125. Therefore, when the vehicle-mounted high-voltage DC connector terminal vibrates, the upper support plate 21 can limit the maximum upward spring amplitude of the upper spring 111, and the lower support plate 22 can limit the maximum downward spring amplitude of the lower spring 112. This prevents poor contact between the upper terminal contact segment 1114 of the upper spring 111, the lower terminal contact segment 1124 of the lower spring 112, and the external terminal. Consequently, the vehicle-mounted high-voltage DC connector terminal of this invention has excellent shock resistance and high structural and performance stability.

[0026] like Figure 4 As shown, the upper terminal contact section 1114 of the upper spring 111 has multiple wavy stripes 1116 extending in the front-back direction on its lower side, and the lower terminal contact section 1124 of the lower spring 112 also has multiple wavy stripes extending in the front-back direction on its upper side. By setting the wavy stripes 1116, the upper spring 111 and the lower spring 112 can achieve multi-point contact with the external terminal, resulting in good contact effect.

[0027] like Figures 1-5As shown, the upper spring 111 includes a first upper spring 1111, a second upper spring 1112, and a third upper spring 1113 arranged at intervals. The lower spring 112 includes a first lower spring 1121, a second lower spring 1122, and a third lower spring 1123 arranged at intervals. The upper front end of the stainless steel shell 2 is provided with three upper support plates 21, which correspond to the first upper spring 1111, the second upper spring 1112, and the third upper spring 1113, respectively. The lower front end of the stainless steel shell 2 is provided with three lower support plates 22, which correspond to the first lower spring 1121, the second lower spring 1122, and the third lower spring 1123, respectively. The socket portion 11 of the copper elastic terminal 1 further includes two upper elastic arms 113 and two lower elastic arms 114. The two upper elastic arms 113 are respectively disposed on the left and right sides of the upper spring 111. The front end of one upper elastic arm 113 is integrally connected to the upper lip segment 1115 of the first upper spring 1111, and the front end of the other upper elastic arm 113 is integrally connected to the upper lip segment 1115 of the third upper spring 1113. The two lower elastic arms 114 are respectively disposed on the left and right sides of the lower spring 112. The front end of one lower elastic arm 114 is integrally connected to the lower lip segment 1125 of the first lower spring 1121, and the front end of the other lower elastic arm 114 is integrally connected to the lower lip segment 1125 of the third lower spring 1123. An external terminal can be inserted into the socket portion 11 from the terminal socket and contact the upper spring 111 and the lower spring 112.

[0028] like Figures 1-5 As shown, the front end of the stainless steel shell 2 is provided with a plurality of lip protective plates 23, which are bent inward and extend to the front side of the corresponding upper lip segment 1115 and lower lip segment 1125.

[0029] like Figures 1-5As shown, the right side of the fixing part 12 of the copper elastic terminal 1 is provided with an upper positioning slot 121 and a lower positioning slot 122. The right side of the rear end of the stainless steel shell 2 is provided with a first upper connecting piece 22 and a first lower connecting piece 23. The first upper connecting piece 22 is bent inward and extends into the upper positioning slot 121 and wraps around the bottom of the upper positioning slot 121. The first lower connecting piece 23 is bent inward and extends into the lower positioning slot 122 and wraps around the bottom of the lower positioning slot 122. The first lower connecting piece 23 and the first lower connecting piece 23... Clearance spaces are provided on both the front and rear sides; a fixing hole 122 is provided on the left side of the fixing part 12 of the copper elastic terminal 1; a second upper connecting piece 24 and a second lower connecting piece 25 are provided on the left side of the rear end of the stainless steel shell 2; the second upper connecting piece 24 is bent inward and extends into the fixing hole 122 and wraps around the upper part of the fixing hole 122; the second lower connecting piece 25 is bent inward and extends into the fixing hole 122 and wraps around the lower part of the fixing hole 122; clearance spaces are provided on both the front and rear sides of the second lower connecting piece 25 and the second lower connecting piece 25. The upper side of the fixing part 12 of the copper elastic terminal 1 is provided with a first positioning recess 123 and a first rear positioning slot 124. The upper side of the rear end of the stainless steel shell 2 is provided with a first positioning recess 26, a first positioning block 27 and a first positioning baffle 28. The first positioning recess 26 sinks down into the first positioning recess 123, the first positioning block 27 is inserted down into the first rear positioning slot 124, and the first positioning baffle 28 bends down and blocks the rear end of the fixing part 12 of the copper elastic terminal 1. The fixing part 12 of the copper elastic terminal 1 has a second positioning recess 125 and a second rear positioning slot 126 on its lower side. The rear end of the stainless steel shell 2 has a second positioning block 29, a second positioning block 210 and a second positioning baffle 211 on its lower rear side. The second positioning block 29 sinks upward into the second positioning recess 125, the second positioning block 210 is inserted upward into the second rear positioning slot 126, and the second positioning baffle 211 is bent upward and blocks the rear end of the fixing part 12 of the copper elastic terminal 1. This utility model can use the structure of the vehicle-mounted high voltage DC connector terminal itself to fix the copper elastic terminal 1 and the stainless steel shell 2, and connects at multiple positions, resulting in high connection strength. It does not rely on laser welding, avoiding the problems of incomplete welding or insufficient welding strength that exist in laser welding, improving production efficiency, reducing the defect rate in the production process, and reducing the energy waste of laser welding.

[0030] like Figures 1-4As shown, an upper elastic wing 212 is connected to the upper middle part of the stainless steel housing 2. The rear end of the upper elastic wing 212 is suspended and extends obliquely upward and backward. A lower elastic wing 213 is connected to the lower middle part of the stainless steel housing 2. The rear end of the lower elastic wing 213 is suspended and extends obliquely downward and backward. When an external connector is inserted, the upper elastic wing 212 and the lower elastic wing 213 can hook onto the external connector to prevent the connector terminals from loosening.

[0031] like Figure 2 and Figure 4 As shown, the stainless steel outer shell 2 has a head-to-tail connection, and the head-to-tail connection is provided with a dovetail-shaped buckle 214 welded by laser, which provides good connection stability.

[0032] like Figures 1-4 As shown, the wiring portion 13 of the copper elastic terminal 1 is provided with a wire-wrapping piece, and the inner side of the wire-wrapping piece is provided with multiple horizontal lines 131. The wire-wrapping piece can wrap around the external conductor, and the horizontal lines 131 can increase the friction and improve the stability of the wiring.

[0033] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A high-stability automotive high-voltage DC connector terminal, comprising a copper elastic terminal and a stainless steel housing, wherein the copper elastic terminal comprises, from front to back, a socket portion, a fixing portion, and a wiring portion connected sequentially; the stainless steel housing is disposed outside the socket portion and the fixing portion of the copper elastic terminal, and the rear end of the stainless steel housing is fixedly connected to the fixing portion of the copper elastic terminal; the socket portion of the copper elastic terminal comprises an upper spring and a lower spring, the upper spring and the lower spring being vertically opposite each other; the upper spring has a downwardly curved upper terminal contact section, the front end of which is connected to an upper lip segment; the lower spring has an upwardly curved lower terminal contact section, the front end of which is connected to a lower lip segment, characterized in that: The upper front end of the stainless steel shell is provided with an upper support plate that extends downward, extending above the upper lip segment of the corresponding upper spring plate to limit the upward movement of the upper lip segment to the endpoint position; the lower front end of the stainless steel shell is provided with a lower support plate that extends upward, extending above the lower lip segment of the corresponding lower spring plate to limit the downward movement of the lower lip segment to the endpoint position.

2. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 1, characterized in that: The upper terminal contact section of the upper spring sheet has multiple wavy stripes extending in the front-back direction on its lower side, and the lower terminal contact section of the lower spring sheet also has multiple wavy stripes extending in the front-back direction on its upper side.

3. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 1, characterized in that: The upper spring includes a first upper spring, a second upper spring, and a third upper spring arranged at intervals. The lower spring includes a first lower spring, a second lower spring, and a third lower spring arranged at intervals. The upper front end of the stainless steel shell is provided with three upper support plates, which correspond to the first upper spring, the second upper spring, and the third upper spring, respectively. The lower front end of the stainless steel shell is provided with three lower support plates, which correspond to the first lower spring, the second lower spring, and the third lower spring, respectively.

4. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 3, characterized in that: The socket portion of the copper elastic terminal further includes two upper elastic arms and two lower elastic arms. The two upper elastic arms are respectively disposed on the left and right sides of the upper spring plate. The front end of one upper elastic arm is integrally connected to the upper lip segment of the first upper spring plate, and the front end of the other upper elastic arm is integrally connected to the upper lip segment of the third upper spring plate. The two lower elastic arms are respectively disposed on the left and right sides of the lower spring plate. The front end of one lower elastic arm is integrally connected to the lower lip segment of the first lower spring plate, and the front end of the other lower elastic arm is integrally connected to the lower lip segment of the third lower spring plate.

5. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 1, characterized in that: The front end of the stainless steel shell is provided with multiple lip protective plates, which are bent inward and extend to the front side of the corresponding upper lip segment and lower lip segment.

6. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 1, characterized in that: The copper elastic terminal has an upper positioning slot and a lower positioning slot on the right side of its fixing part. The stainless steel shell has a first upper connecting piece and a first lower connecting piece on the right side of its rear end. The first upper connecting piece is bent inward and extends into the upper positioning slot, covering the bottom of the upper positioning slot. The first lower connecting piece is bent inward and extends into the lower positioning slot, covering the bottom of the lower positioning slot. The copper elastic terminal has a fixing hole on the left side of its fixing part. The stainless steel shell has a second upper connecting piece and a second lower connecting piece on the left side of its rear end. The second upper connecting piece is bent inward and extends into the fixing hole, covering the upper part of the fixing hole. The second lower connecting piece is bent inward and extends into the fixing hole, covering the lower part of the fixing hole. The second lower connecting piece and the second lower connecting piece have clearances on their front and rear sides, respectively.

7. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 6, characterized in that: The upper side of the fixing part of the copper elastic terminal is provided with a first positioning recess and a first rear positioning slot. The upper rear end of the stainless steel shell is provided with a first positioning block, a first positioning block and a first positioning baffle. The first positioning block sinks down into the first positioning recess, the first positioning block is inserted into the first rear positioning slot, and the first positioning baffle bends down and blocks the rear end of the fixing part of the copper elastic terminal. The lower side of the fixing part of the copper elastic terminal is provided with a second positioning recess and a second rear positioning slot. The lower rear end of the stainless steel shell is provided with a second positioning block, a second positioning block and a second positioning baffle. The second positioning block sinks up into the second positioning recess, the second positioning block is inserted into the second rear positioning slot, and the second positioning baffle bends up and blocks the rear end of the fixing part of the copper elastic terminal.

8. The high-stability vehicle-mounted high-voltage DC connector terminal according to claim 1, characterized in that: The upper part of the middle section of the stainless steel shell is connected to an upper elastic wing, the rear end of which is suspended and extends backward and upward. The lower part of the middle section of the stainless steel shell is connected to a lower elastic wing, the rear end of which is suspended and extends backward and downward.

9. The high-stability vehicle-mounted high-voltage DC connector terminal according to any one of claims 1-8, characterized in that: The stainless steel outer shell has a joint at both ends, and the joint is equipped with a dovetail-shaped latch welded by laser.

10. The high-stability vehicle-mounted high-voltage DC connector terminal according to any one of claims 1-8, characterized in that: The copper elastic terminal has a wire wrapping piece at the connection point, and the inner side of the wire wrapping piece has multiple horizontal lines.

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