Charging base lead frame, charging base lead frame assembly and charging base

Abstract

To provide a charging base lead frame configured to increase the strength of the root of an elastic cantilever, thereby preventing the root of the elastic cantilever from folding backwards when matched with a terminal.SOLUTION: A charging base lead frame comprises: a frame body (2) which is formed with a receiving slot (21); and a plurality of leads which are fixed to the frame body (2) and include a first lead for electrical connection to a terminal of a charging base. The first lead comprises: a lead body which is fixed to the frame body (2); a pair of elastic cantilevers (110) connected to the lead body and suspended in the receiving slot (21) for clamping the terminal; and a pair of bridging arms for respectively connecting fixed ends of the pair of elastic cantilevers (110) to the lead body. At least a portion of the fixed end of the elastic cantilever (110) is enclosed by the frame body (2).SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of Chinese Patent Application No. CN202221318765.6, filed on May 30, 2022, with the China National Intellectual Property Administration, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a charging base lead frame, a charging base lead frame assembly including the charging base lead frame, and a charging base including the charging base lead frame or the charging base lead frame assembly.

Background Art

[0003] In the prior art, a charging base in a new energy vehicle usually includes a housing, a charging terminal, a signal terminal, a temperature sensor, and a lead frame. The charging terminal and the signal terminal are installed in the housing. The temperature sensor is installed on the lead frame. The lead frame includes a frame body and a plurality of leads fixed to the frame body. The signal terminal and the temperature sensor are electrically connected to corresponding leads on the lead frame. The lead electrically connected to the signal terminal usually includes a lead body, a pair of elastic cantilevers, and a pair of bridge arms. The pair of bridge arms connects the fixed ends of the pair of elastic cantilevers to the lead body. The signal terminal is clamped between the pair of elastic cantilevers of the lead wire.

[0004] In the prior art, the pair of elastic cantilevers and the pair of bridge arms in the lead electrically connected to the signal terminal are exposed from the outside of the frame body. Therefore, when the pair of elastic cantilevers are mated with the signal terminal, the base (fixed end) of the elastic cantilevers is prone to bending backward. In the prior art, to prevent the base of the elastic cantilever from bending backward, the width of the bridge arm connected to the base of the elastic cantilever is usually increased. Increasing the width of the bridge arm improves the strength of the base of the elastic cantilever, but it reduces the effective length and elasticity of the elastic cantilever. [Overview of the project] [Problems that the invention aims to solve]

[0005] This invention was made to overcome or mitigate at least one aspect of the above-mentioned problems. [Means for solving the problem]

[0006] According to another aspect of the present invention, a charging base lead frame is provided. The charging base lead frame comprises a frame body having receiving slots formed therein, and a plurality of leads fixed to the frame body, including a first lead for electrical connection to terminals of a charging base. The first lead comprises a lead body fixed to the frame body, a pair of elastic cantilevers connected to the lead body and suspended in the receiving slots for tightening terminals, and a pair of bridge arms for connecting the fixed ends of the pair of elastic cantilevers to the lead body, respectively. At least a portion of the fixed ends of the elastic cantilevers are enclosed by the frame body.

[0007] According to an exemplary embodiment of the present invention, a portion of the bridge arm and a portion of the fixed end of the elastic cantilever are surrounded by the frame body, while the portion of the fixed end of the elastic cantilever and the portion of the bridge arm that are not surrounded by the frame body are suspended in the receiving slot.

[0008] According to another exemplary embodiment of the present invention, the entire bridge arm and the entire fixed end of the elastic cantilever are enclosed within the frame body, while the remaining portion of the elastic cantilever, excluding the fixed end, is exposed from the frame body and suspended in the receiving slot.

[0009] According to another exemplary embodiment of the present invention, the bridge arm is positioned on one side in the width direction of the elastic cantilever and is connected to the side edge of the fixed end of the elastic cantilever.

[0010] According to another exemplary embodiment of the present invention, the width direction of the bridge arm is parallel to the length direction of the elastic cantilever, and the width of the bridge arm is smaller than the width of the elastic cantilever.

[0011] According to another exemplary embodiment of the present invention, the width of the bridge arm is 10% to 60% of the width of the elastic cantilever, or the width of the bridge arm is 20% to 50% of the width of the elastic cantilever.

[0012] According to another exemplary embodiment of the present invention, one side of the bridge arm in the width direction is flush with the end face of the fixed end of the elastic cantilever, and at least a portion of the bridge arm and at least a portion of the fixed end of the elastic cantilever are enclosed by the frame body.

[0013] According to another exemplary embodiment of the present invention, at least a portion of the bridge arm is bent relative to the surface of the reed body such that the surface of the elastic cantilever is substantially perpendicular to the surface of the reed body.

[0014] According to another exemplary embodiment of the present invention, the frame body has a projection that protrudes into a receiving slot, and at least a portion of the bridge arm and at least a portion of the fixed end of the elastic cantilever are surrounded by the projection.

[0015] According to another exemplary embodiment of the present invention, the frame body has a front and a back, and the frame body has a limiting beam positioned at its back and bridging between two sides of a receiving slot, the limiting beam positioned between a pair of elastic cantilevers and extending along the longitudinal direction of the elastic cantilevers, and when a terminal is installed in the charging base lead frame, one end of the terminal is inserted between the free ends (b) of the pair of elastic cantilevers, and the end face of one end of the terminal abuts against the limiting beam.

[0016] According to another exemplary embodiment of the present invention, through holes are formed in the frame body to allow charging terminals to pass through.

[0017] According to another exemplary embodiment of the present invention, the plurality of leads further include a second lead for electrical connection to a temperature sensor on a charging base, and the pins of the first and second leads are exposed from one side of the frame body and arranged in a row.

[0018] According to another exemplary embodiment of the present invention, the first lead further includes a pair of guide vanes, each connected to one side of the free ends of a pair of elastic cantilevers, the pair of guide vanes flaring outward in an octagonal shape to guide one end of the terminal to be inserted between the free ends of the pair of elastic cantilevers.

[0019] According to another exemplary embodiment of the present invention, each of the plurality of leads is an integrated stamped molded part, and the frame body and the plurality of leads are formed as an integrated injection molded part such that the frame body is directly joined to the plurality of leads.

[0020] According to another aspect of the present invention, a charging base lead frame assembly is provided. The charging base lead frame assembly comprises the charging base lead frame described above and a temperature sensor mounted on the frame body of the charging base lead frame for detecting the temperature of the charging terminals of the charging base. The temperature sensor is electrically connected to a second lead in the charging base lead frame.

[0021] According to another aspect of the present invention, a charging base is provided. The charging base includes a housing, the charging base lead frame or the charging base lead frame assembly as described above installed in the housing, and terminals installed in the housing and clamped between a pair of elastic cantilevers of a first lead of the charging base lead frame.

[0022] According to an exemplary embodiment of the present invention, the terminal is a signal terminal.

[0023] According to another exemplary embodiment of the present invention, the charging base further includes a charging terminal installed in the housing and passing through the charging base lead frame.

[0024] In the above-described exemplary embodiment of the present invention, at least a part of the fixed end portion of the elastic cantilever or at least a part of the bridge arm connected to the fixed end portion of the elastic cantilever is surrounded and fixed by the frame body, so that the strength of the root portion of the elastic cantilever is increased, thereby effectively preventing the root portion of the elastic cantilever from bending backward when it is fitted with the terminal.

[0025] In addition, in the above-described exemplary embodiment of the present invention, by reducing the width of the bridge arm, the effective length and elasticity of the elastic cantilever are increased.

[0026] The above and other features of the present invention will become more apparent by describing its exemplary embodiments in detail with reference to the accompanying drawings.

Brief Description of the Drawings

[0027] [Figure 1] It is an explanatory perspective view of a charging base lead frame according to an exemplary embodiment of the present invention. [Figure 2] It is an explanatory perspective view of a plurality of leads in a charging base lead frame according to an exemplary embodiment of the present invention. [Figure 3]This is a descriptive perspective view of a first lead, one of a plurality of leads, in a charging base lead frame according to an exemplary embodiment of the present invention. [Figure 4] This is an enlarged view of the explanatory section of the first lead shown in Figure 3, as seen from above. [Figure 5] This is an enlarged view of the explanatory section of the first lead shown in Figure 3, as seen from the bottom. [Figure 6] Figure 3 is an explanatory perspective view of the mating of the first lead and terminal. [Figure 7] This is an explanatory perspective view of a charging base lead frame according to an exemplary embodiment of the present invention, showing only one first lead. [Figure 8] This is an explanatory diagram of a pair of elastic cantilevers between the first lead wires inserted into the charging base lead frame. [Figure 9] This is a plan view of the charging base lead frame and terminals according to an exemplary embodiment of the present invention, as seen from the rear. [Modes for carrying out the invention]

[0028] Exemplary embodiments of the present disclosure are described below in detail with reference to the accompanying drawings. In the drawings, similar reference numerals refer to similar elements. However, the present disclosure may be implemented in numerous different forms and should not be construed as being limited to the embodiments described herein. Rather, these embodiments are provided to make the present disclosure thorough and complete and will adequately convey the concepts of the present disclosure to those skilled in the art.

[0029] In the following detailed description, for illustrative purposes, numerous specific details are included to provide a complete understanding of the embodiments disclosed. However, it will be apparent that one or more embodiments may be carried out without these specific details. In other examples, for the sake of simplicity in the drawings, well-known structures and devices are shown schematically.

[0030] According to the general concept of the present invention, a charging base lead frame is provided. The charging base lead frame comprises a frame body having receiving slots formed therein, and a plurality of leads fixed to the frame body, including a first lead for electrical connection to terminals of a charging base. The first lead comprises a lead body fixed to the frame body, a pair of elastic cantilevers connected to the lead body and suspended in the receiving slots for tightening terminals, and a pair of bridge arms for connecting the fixed ends of the pair of elastic cantilevers to the lead body, respectively. At least a portion of the fixed ends of the elastic cantilevers is enclosed by the frame body.

[0031] According to another general concept of the present invention, a charging base lead frame assembly is provided. The charging base lead frame assembly comprises the charging base lead frame described above and a temperature sensor mounted on the frame body of the charging base lead frame for detecting the temperature of the charging terminals of the charging base. The temperature sensor is electrically connected to a second lead in the charging base lead frame.

[0032] According to another general concept of the present invention, a charging base is provided. The charging base comprises a housing, a charging base lead frame or charging base lead frame assembly mounted on the housing, and terminals mounted on the housing and clamped between a pair of elastic cantilevers of the first lead of the charging base lead frame.

[0033] Figure 1 shows an explanatory perspective view of a charging base lead frame according to an exemplary embodiment of the present invention. Figure 2 shows an explanatory perspective view of a plurality of leads 1 and 1' in the charging base lead frame according to an exemplary embodiment of the present invention. Figure 3 shows an explanatory perspective view of the first lead 1 among the plurality of leads 1 and 1' in the charging base lead frame according to an exemplary embodiment of the present invention. Figure 4 shows an enlarged partial explanatory view of the first lead 1 shown in Figure 3, viewed from above. Figure 5 shows an enlarged partial explanatory view of the first lead 1 shown in Figure 3, viewed from below. Figure 6 shows an explanatory perspective view of the first lead 1 shown in Figure 3 mated with terminal 3.

[0034] As shown in Figures 1 to 6, in the exemplary embodiment, the charging base lead frame includes a frame body 2 and a plurality of leads 1, 1'. Receiving slots 21 are formed in the frame body 2. The plurality of leads 1 and 1' are fixed to the frame body 2.

[0035] As shown in Figures 1 to 6, in the exemplary embodiment, a plurality of leads 1, 1' include a first lead 1 for electrical connection to the terminals 3 of the charging base. The first lead 1 includes a lead body 10, a pair of elastic cantilevers 110, and a pair of bridge arms 111. The lead body 10 is fixed to the frame body 2. The pair of elastic cantilevers 110 are connected to the lead body 10 and suspended in the receiving slots 21 to clamp the terminals 3. The pair of bridge arms 111 are used to connect the fixed ends 110a of the pair of elastic cantilevers 110 to the lead body 10.

[0036] Figure 7 shows an explanatory perspective view of a charging base lead frame according to an exemplary embodiment of the present invention, showing only one first lead 1. Figure 8 shows an explanatory diagram of a pair of elastic cantilevers 110 between the first leads 1 inserted into the charging base lead frame. Figure 9 shows a plan view of the charging base lead frame and terminal 3 from the rear, according to an exemplary embodiment of the present invention.

[0037] As shown in Figures 1 to 9, in an exemplary embodiment of the present invention, at least a portion of the bridge arm 111 and / or at least a portion of the fixed end 110a of the elastic cantilever 110 are surrounded by the frame body 2. In this way, the strength of the base of the elastic cantilever 110 can be improved, thereby effectively preventing the base of the elastic cantilever 110 from bending backward when mated with the terminal 3.

[0038] As shown in Figures 1 to 9, in the exemplary embodiment, the entire bridge arm 111 and the entire fixed end 110a of the elastic cantilever 110 are enclosed by the frame body 2. The remaining portion of the elastic cantilever 110, excluding the fixed end 110a, is exposed from the frame body 2 and suspended in the receiving slot 21.

[0039] However, the present invention is not limited to the exemplary embodiments. For example, in another exemplary embodiment of the present invention, a portion of the bridge arm 111 and / or a portion of the fixed end 110a of the elastic cantilever 110 are enclosed by the frame body 2. The portion of the fixed end 110a of the elastic cantilever 110 and the portion of the bridge arm 111 that are not enclosed by the frame body 2 are suspended in the receiving slot 21.

[0040] As shown in Figures 1 to 9, in the exemplary embodiment, the bridge arm 111 is positioned on one side in the width direction of the elastic cantilever 110 and is connected to the side edge of the fixed end 110a of the elastic cantilever 110. The width direction of the bridge arm 111 is parallel to the length direction of the elastic cantilever 110, and the width of the bridge arm 111 is smaller than the width of the elastic cantilever 110.

[0041] As shown in Figures 1 to 9, in the exemplary embodiment, the width of the bridge arm 111 may be 10% to 60% of the width of the elastic cantilever 110, or it may be 20% to 50% of the width of the elastic cantilever 110. By reducing the width of the bridge arm 111 in this way, the effective length and elasticity of the elastic cantilever 110 can be increased.

[0042] As shown in Figures 1 to 9, in the exemplary embodiment, one side of the bridge arm 111 in the width direction is flush with the end face of the fixed end 110a of the elastic cantilever 110, and at least a portion of the bridge arm 111 and at least a portion of the fixed end 110a of the elastic cantilever 110 are surrounded by the frame body 2.

[0043] As shown in Figures 1 to 9, in the exemplary embodiment, at least a portion of the bridge arm 111 is bent relative to the surface of the reed body 10. For example, the bridge arm 111 is bent approximately 90 degrees relative to the surface of the reed body 10 such that the surface of the elastic cantilever 110 is approximately perpendicular to the surface of the reed body 10.

[0044] As shown in Figures 1 to 9, in the exemplary embodiment, the frame body 2 has a projection 211 that protrudes into the receiving slot 21, and at least a portion of the bridge arm 111 and at least a portion of the fixed end 110a of the elastic cantilever 110 are surrounded by the projection 211. In the exemplary embodiment, the projection 211 is located at the corner of the receiving slot 21 and is connected to two adjacent sides of the receiving slot 21.

[0045] As shown in Figures 1 to 9, in the exemplary embodiment, the frame body 2 has a front and a back, and the frame body 2 has a limiting beam 212 positioned at its back and bridging between the two sides of the receiving slot 21. The limiting beam 212 is positioned between a pair of elastic cantilevers 110 and extends along the longitudinal direction of the elastic cantilevers 110. When the terminal 3 is installed in the charging base lead frame, one end 30 of the terminal 3 is inserted between the free ends 110b of the pair of elastic cantilevers 110, and the end face 30a of the one end of the terminal 3 abuts against the limiting beam 212.

[0046] As shown in Figures 1 to 9, in the exemplary embodiment, a through hole 22 is also formed in the frame body 2, which allows a charging terminal (not shown) to pass through.

[0047] As shown in Figures 1 to 9, in the exemplary embodiment, the plurality of leads 1, 1' further include a second lead 1' for electrical connection to a temperature sensor on a charging base. The pins 12 and 12' of the first lead 1 and the second lead 1' are exposed from one side of the frame body 2 and arranged in a row.

[0048] As shown in Figures 1 to 9, in the exemplary embodiment, the first lead 1 further includes a pair of guide vanes 112. Each pair of guide vanes 112 is connected to one side of the free end 110b of a pair of elastic cantilevers 110. The pair of guide vanes 112 flares outward in an octagonal shape to guide the end 30 of the terminal 3 to be inserted between the free ends 110b of the pair of elastic cantilevers 110.

[0049] As shown in Figures 1 to 9, in the exemplary embodiment, each of the multiple leads 1 and 1' is an integrated stamped molded part, and the frame body 2 and the multiple leads 1 and 1' are formed as an integrated injection molded part such that the injection-molded frame body 2 is directly bonded to the multiple leads 1 and 1'. This reduces manufacturing costs.

[0050] As shown in Figures 1 to 9, an exemplary embodiment of the present invention also discloses a charging base lead frame assembly. The charging base lead frame assembly includes the charging base lead frame and a temperature sensor (not shown). The temperature sensor is mounted on the frame body 2 of the charging base lead frame to detect the temperature of the charging terminals (not shown) of the charging base. The temperature sensor is electrically connected to a second lead 1' in the charging base lead frame.

[0051] As shown in Figures 1 to 9, an exemplary embodiment of the present invention also discloses a charging base. The charging base includes a housing (not shown), the charging base lead frame described above, and terminals 3. The charging base lead frame is mounted on the housing. Terminals 3 are mounted on the housing and are clamped between a pair of elastic cantilevers 110 of the first lead 1 of the charging base lead frame.

[0052] As shown in Figures 1 to 9, an exemplary embodiment of the present invention also discloses a charging base. The charging base includes a housing (not shown), the charging base lead frame assembly described above, and terminals 3. The charging base lead frame is mounted in the housing. Terminals 3 are mounted in the housing and are clamped between a pair of elastic cantilevers 110 of the first lead 1 of the charging base lead frame.

[0053] As shown in Figures 1 to 9, in the exemplary embodiment, the terminal 3 described above may be a signal terminal of the charging station.

[0054] As shown in Figures 1 to 9, in the exemplary embodiment, the charging base further includes charging terminals. The charging terminals are mounted in the housing and pass through the charging base lead frame through through holes 22 in the frame body 2.

[0055] Those skilled in the art should understand that the embodiments described above are intended to be illustrative, not limiting. For example, numerous modifications may be made to the embodiments described above by those skilled in the art, and the various features described in the various embodiments may be freely combined with each other, as long as they do not contradict each other in terms of structure or principle.

[0056] While several exemplary embodiments have been described, it will be understood by those skilled in the art that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the Disclosure. The scope of the Disclosure is defined in the claims and its equivalents.

[0057] Where used herein, elements described in the singular and followed by the words "a" or "an" should be understood as not making any such exclusions unless explicitly stated otherwise. Furthermore, the description of "one embodiment" of the present invention is not intended to be construed as excluding the existence of further embodiments that similarly incorporate the described features. In addition, unless explicitly stated otherwise, embodiments "comprising" or "having" an element or a number of elements having a particular property may include further such elements that do not possess that property.

Claims

1. A charging base lead frame, The aforementioned charging base lead frame is - A frame body (2) having a receiving slot (21) formed therein, - Fixed to the frame body (2), a plurality of leads (1, 1') including a first lead (1) for electrical connection to the charging base terminal (3), Equipped with, The first lead (1) is - The lead body (10) is fixed to the frame body (2), - A pair of elastic cantilevers (110) connected to the lead body (10) and suspended in the receiving slot (21) for tightening the terminal (3), - A pair of bridge arms (111) for connecting the fixed ends (110a) of the pair of elastic cantilevers (110) to the lead body (10), Equipped with, At least a portion of the fixed end (110a) of the elastic cantilever (110) is surrounded by the frame body (2). Charging base lead frame.

2. A portion of the bridge arm (111) and a portion of the fixed end (110a) of the elastic cantilever (110) are surrounded by the frame body (2), The portion of the elastic cantilever (110) that is not surrounded by the frame body (2), specifically the fixed end (110a) and the bridge arm (111), is suspended in the receiving slot (21). The charging base lead frame according to claim 1.

3. The entire bridge arm (111) and the entire fixed end (110a) of the elastic cantilever (110) are surrounded by the frame body (2). The remaining portion of the elastic cantilever (110), excluding the fixed end (110a), is exposed from the frame body (2) and suspended in the receiving slot (21). The charging base lead frame according to claim 1.

4. The bridge arm (111) is positioned on one side in the width direction of the elastic cantilever (110) and is connected to the side edge of the fixed end (110a) of the elastic cantilever (110). The charging base lead frame according to claim 1.

5. The width direction of the bridge arm (111) is parallel to the length direction of the elastic cantilever (110), and the width of the bridge arm (111) is smaller than the width of the elastic cantilever (110). The charging base lead frame according to claim 4.

6. The width of the bridge arm (111) is 10% to 60% of the width of the elastic cantilever (110), or The width of the bridge arm (111) is 20% to 50% of the width of the elastic cantilever (110). The charging base lead frame according to claim 5.

7. The one side of the bridge arm (111) in the width direction is flush with the end face of the fixed end (110a) of the elastic cantilever (110). At least a portion of the bridge arm (111) and at least a portion of the fixed end (110a) of the elastic cantilever (110) are enclosed by the frame body (2). The charging base lead frame according to claim 4.

8. At least a portion of the bridge arm (111) is bent relative to the surface of the reed body (10) such that the surface of the elastic cantilever (110) is approximately perpendicular to the surface of the reed body (10). The charging base lead frame according to claim 4.

9. The frame body (2) has a projection (211) that protrudes into the receiving slot (21), and at least a portion of the bridge arm (111) and at least a portion of the fixed end (110a) of the elastic cantilever (110) are surrounded by the projection (211). The charging base lead frame according to claim 1.

10. The frame body (2) has a front part and a back part, and the frame body (2) has a limiting beam (212) positioned on the back part of the frame body (2) that bridges between the two sides of the receiving slot (21), The limiting beam (212) is positioned between the pair of elastic cantilevers (110) and extends along the longitudinal direction of the elastic cantilevers (110), When the terminal (3) is installed on the charging base lead frame, one end (30) of the terminal (3) is inserted between the free ends (110b) of the pair of elastic cantilevers (110), and the end face (30a) of the one end of the terminal (3) comes into contact with the limiting beam (212). The charging base lead frame according to claim 1.

11. The through hole (22) is formed in the frame body (2) to allow the charging terminal to pass through. The charging base lead frame according to claim 1.

12. The plurality of leads (1, 1') further include a second lead (1') for electrical connection to the temperature sensor of the charging base, The pins (12, 12') of the first lead (1) and the second lead (1') are exposed from one side of the frame body (2) and arranged in a row. The charging base lead frame according to claim 1.

13. The first lead (1) further includes a pair of guide vane portions (112) each connected to one side of the free end (110b) of the pair of elastic cantilevers (110), The pair of guide vanes (112) are outwardly flared in order to guide one end (30) of the terminal (3) to be inserted between the free ends (110b) of the pair of elastic cantilevers (110). A charging base lead frame according to any one of claims 1 to 12.

14. Each of the plurality of leads (1, 1') is an integrated stamping molded part, and the frame body (2) and the plurality of leads (1, 1') are formed as an integrated injection molded part such that the frame body (2) is directly joined to the plurality of leads (1, 1'). A charging base lead frame according to any one of claims 1 to 12.

15. The charging base lead frame according to any one of claims 1 to 12, A temperature sensor is installed on the frame body (2) of the charging base lead frame to detect the temperature of the charging terminals of the charging base. A charging base lead frame assembly comprising, The plurality of leads (1, 1') further include a second lead (1') for electrical connection to the temperature sensor of the charging base, The temperature sensor is electrically connected to the second lead (1') in the charging base lead frame. Charging base lead frame assembly.

16. Housing and The charging base lead frame according to any one of claims 1 to 12 is installed in the housing, A terminal (3) is installed in the housing and is fastened between the pair of elastic cantilevers (110) of the first lead (1) of the charging base lead frame. A charging base equipped with this feature.

17. The charging base according to claim 16, wherein the terminal (3) is a signal terminal.

18. Charging terminal installed in the housing and passing through the charging base lead frame The charging base according to claim 16, further comprising:

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