Terminal, female connector and electrical connection device

Abstract

The utility model provides a terminal, a female connector and an electric connection device. The terminal is used for being respectively connected with a fixed seat and a floating seat, and comprises a welding part, a first fixed part, a floating part, a second fixed part, an inflection elastic arm and a contact part which are connected in sequence, the first fixing part is used for being fixedly held on a fixing seat; the second fixing part is used for being fixedly held on the floating seat; the distance between the inflection elastic arm and the welding face of the welding part is smaller than the distance between the second fixing part and the welding face. The second fixing part is fixedly held on the floating seat, the contact part is pressed to drive the inflection elastic arm to deform after the female connector and the male connector are inserted and matched, and the distance between the inflection elastic arm and the welding surface of the welding part is smaller than the distance between the second fixing part and the welding surface, so that the length of the inflection elastic arm is prolonged, and especially for a floating connector with a relatively compact space, the service life of the floating connector is prolonged. Therefore, the elastic force arm is prevented from being fatigue due to compression after the female connector and the male connector are inserted and matched with each other, and the matching contact reliability of the electric connector device is further improved.

Description

Technical Field

[0001] This application relates to the technical field of electrical connectors, and in particular to a terminal, female connector and electrical connection device. Background Technology

[0002] The electrical connection device includes a female connector and a male connector, which are plugged into each other. In floating connection scenarios, the female and male connectors are allowed to compensate for displacement or misalignment within a predetermined range during the connection process, thereby reducing the installation accuracy requirements and improving the system reliability under vibration, thermal expansion or mechanical stress.

[0003] However, the elastic lever arm of the electrical connection device in the related technology becomes fatigued due to compression after the female connector and male connector are mated, such as CN104347993B, which makes the mating contact reliability of the electrical connector device poor. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide a terminal, female connector and electrical connection device with better interlocking contact reliability.

[0005] The objective of this application is achieved through the following technical solution:

[0006] A terminal for connecting to a fixed base and a floating base respectively, the terminal comprising a welding part, a first fixed part, a floating part, a second fixed part, a folding elastic arm and a contact part connected in sequence;

[0007] The first fixing part is used to hold the fixing base;

[0008] The second fixing part is used to hold the floating seat; the floating part is used to be disposed between the floating seat and the fixing seat;

[0009] The distance between the retractable elastic arm and the welding surface of the welding part is less than the distance between the second fixing part and the welding surface.

[0010] In one embodiment, the distance between the holding position of the first fixing part and the welding surface is less than the distance between the holding position of the second fixing part and the welding surface.

[0011] In one embodiment, the distance between the folding elastic arm and the welding surface is less than the distance between the holding position of the first fixing part and the welding surface; the distance between the folding elastic arm and the welding surface is equal to the distance between the lowest point of the folding elastic arm and the welding surface; and / or,

[0012] The lowest end of the folding elastic arm is higher than the welding surface.

[0013] In one embodiment, the folding elastic arm includes an extension, an elastic arm body, and a folding portion connected in sequence. The extension is connected to the second fixing portion and extends toward the second fixing portion in a direction close to the welding surface. The end of the folding portion away from the elastic arm body is connected to the contact portion. The elastic arm body has a bent structure.

[0014] The distance between the folded elastic arm and the welding surface is equal to the distance between the bending protrusion of the elastic arm body and the welding surface.

[0015] In one embodiment, the angle formed by the connection between the first end of the elastic arm body and the extension is 180 degrees; and / or,

[0016] The angle between the second end of the elastic arm body and the folded portion is 100 degrees to 150 degrees.

[0017] In one embodiment, the terminal further includes a guide portion connected to the end of the contact portion away from the retractable elastic arm, the distance between the end of the guide portion away from the contact portion and the second fixing portion being less than the distance between the end of the guide portion adjacent to the contact portion and the second fixing portion.

[0018] In one embodiment, the contact portion is a bent structure, wherein the contact portion is bent and protrudes toward the side away from the second fixing portion to form a contact area of ​​the contact portion; and / or,

[0019] The angle between the folded portion and the contact portion is 150 degrees to 175 degrees.

[0020] In one embodiment, the contact area of ​​the contact portion is located between the holding position of the first fixing portion and the holding position of the second fixing portion; and / or,

[0021] The terminal is a one-piece molded structure.

[0022] A female connector includes a fixed base, a floating base, and terminals as described in any of the above embodiments;

[0023] The fixed seat has a receiving cavity, and the floating seat is located in the receiving cavity and floats relative to the fixed seat; the fixed seat has a first locking hole, and the first fixing part is located in the first locking hole and fixed to the fixed seat; the floating seat has a second locking hole, and the second fixing part is located in the second locking hole and fixed to the floating seat; the floating part is disposed between the floating seat and the fixed seat, and the floating part is supported by the floating seat;

[0024] The floating seat has a through hole and a mating hole that are connected. The folding elastic arm passes through the through hole and the contact part is located in the mating hole.

[0025] An electrical connection device includes the aforementioned female connector.

[0026] Compared with the prior art, this application has at least the following advantages:

[0027] 1. The above-mentioned terminal includes a welding part, a first fixing part, a floating part, a second fixing part, a folding elastic arm and a contact part connected in sequence. The welding part can be welded and assembled on the circuit board. Since the first fixing part is fixed to the fixing seat, the fixing seat is fixed relative to the circuit board. The floating part is disposed between the floating seat and the fixing seat, thereby enabling the floating seat to float relative to the fixing seat.

[0028] 2. Since the second fixing part is fixed to the floating seat, the contact part is compressed and the elastic arm deforms after the female connector and male connector are mated. The distance between the elastic arm and the welding surface of the welding part is less than the distance between the second fixing part and the welding surface, which extends the length of the elastic arm. Especially for floating connectors with compact space, this avoids the elastic arm from fatigue due to compression after the female connector and male connector are mated, thereby improving the mating contact reliability of the electrical connector device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an electrical connection device according to an embodiment;

[0031] Figure 2 for Figure 1 A cross-sectional view of the electrical connection device shown;

[0032] Figure 3 for Figure 1 A schematic diagram of the female connector of the electrical connection device shown;

[0033] Figure 4 for Figure 3 An exploded view of the female connector shown.

[0034] Figure 5 for Figure 4 A schematic diagram of the terminals of the female connector shown;

[0035] Figure 6for Figure 3 The cross-sectional view of the female connector shown. Detailed Implementation

[0036] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] This application provides a terminal for connecting to a fixed base and a floating base respectively. The terminal includes a welding part, a first fixing part, a floating part, a second fixing part, a folding elastic arm, and a contact part connected in sequence. The first fixing part is used to hold the fixed base. The second fixing part is used to hold the floating base. The floating part is used to be disposed between the floating base and the fixed base. The distance between the folding elastic arm and the welding surface of the welding part is less than the distance between the second fixing part and the welding surface.

[0040] The aforementioned terminal includes a soldering part, a first fixing part, a floating part, a second fixing part, a folding elastic arm, and a contact part connected in sequence. The soldering part can be soldered and assembled onto the circuit board. Since the first fixing part is fixed to the fixing seat, the fixing seat is fixed relative to the circuit board. The floating part is located between the floating seat and the fixing seat, thereby allowing the floating seat to float relative to the fixing seat. Since the second fixing part is fixed to the floating seat, the contact part is compressed after the female connector and male connector are mated, causing the folding elastic arm to deform. The distance between the folding elastic arm and the soldering surface of the soldering part is smaller than the distance between the second fixing part and the soldering surface, which extends the length of the folding elastic arm. Especially for floating connectors with compact space, this avoids the elastic arm from fatigue due to compression after the female connector and male connector are mated, thereby improving the mating contact reliability of the electrical connector device.

[0041] To better understand the technical solution and beneficial effects of this application, the following detailed description is provided in conjunction with specific embodiments:

[0042] like Figures 1 to 5 As shown, a female connector 100 in one embodiment includes a fixed base 110, a floating base 120, and a terminal 130; the fixed base 110 forms a receiving cavity 111, and the floating base 120 is located in the receiving cavity 111 and floats relative to the fixed base 110.

[0043] In one embodiment, terminal 130 is used to connect to fixed base 110 and floating base 120 respectively. Terminal 130 includes a welding part 131, a first fixing part 132, a floating part 133, a second fixing part 134, a folding elastic arm 135, and a contact part 136 connected in sequence. The first fixing part 132 is used to hold the fixed base 110. The second fixing part 134 is used to hold the floating base 120. The floating part 133 is disposed between the floating base 120 and the fixed base 110, and the floating part 133 supports the floating base 120, allowing the floating base 120 to float relative to the fixed base 110. In this embodiment, the fixed base 110 has a first locking hole 113, and the first fixing part 132 is located in the first locking hole 113 and held in the fixed base 110. The floating base 120 has a second locking hole 123, and the second fixing part 134 is located in the second locking hole and held in the floating base 120.

[0044] Furthermore, the floating seat 120 has a through hole 122 and a mating hole 124 that are connected. The folding elastic arm 135 passes through the through hole 122, and the contact part 136 is located in the mating hole 124. The distance between the folding elastic arm 135 and the welding surface 1312 of the welding part 131 is less than the distance between the second fixing part 134 and the welding surface 1312.

[0045] The aforementioned female connector 100 and terminal 130 include a soldering part 131, a first fixing part 132, a floating part 133, a second fixing part 134, a folding elastic arm 135, and a contact part 136 connected in sequence. The soldering part 131 can be soldered and assembled onto the circuit board. Since the first fixing part 132 is fixed to the fixing seat 110, the fixing seat 110 is fixed relative to the circuit board. The floating part 133 is disposed between the floating seat 120 and the fixing seat 110, thereby allowing the floating seat 120 to float relative to the fixing seat 110. Since the second fixing part 134... Fixed to the floating seat 120, the contact portion 136 is pressed after the female connector 100 and the male connector are mated, causing the folded elastic arm 135 to deform. The distance between the folded elastic arm 135 and the welding surface 1312 of the welding portion 131 is less than the distance between the second fixing portion 134 and the welding surface 1312, which extends the length of the folded elastic arm 135. Especially for floating connectors with relatively compact space, this avoids the elastic arm from becoming fatigued due to compression after the female connector 100 and the male connector are mated, thereby improving the mating contact reliability of the electrical connector device.

[0046] like Figure 2 and Figure 5 As shown, in one embodiment, the distance between the holding position of the first fixing part 132 and the welding surface 1312 is less than the distance between the holding position of the second fixing part 134 and the welding surface 1312, so that the holding position of the second fixing part 134 is higher than the holding position of the first fixing part 132. In this embodiment, the opening position of the first locking hole 113 is lower than the opening position of the second locking hole.

[0047] like Figure 2 and Figure 5 As shown, in one embodiment, the distance between the folded elastic arm 135 and the welding surface 1312 is less than the distance between the holding position of the first fixing part 132 and the welding surface 1312; the distance between the folded elastic arm 135 and the welding surface 1312 is equal to the distance between the lowest end of the folded elastic arm 135 and the welding surface 1312; in this embodiment, the lowest end of the folded elastic arm 135 is higher than the welding surface 1312, and the lowest end of the folded elastic arm 135 is lower than the height of the holding position of the first fixing part 132, which further facilitates extending the length of the folded elastic arm 135, especially for floating connectors with limited space. And / or, in one embodiment, the lowest end 135a of the folded elastic arm 135 is higher than the welding surface 1312, so that the folded elastic arm 135 is deformed under pressure when it abuts against the contact part 136. In this embodiment, the lowest point of the folding elastic arm 135 is the lowest part of the folding elastic arm 135 relative to the welding surface 1312 (i.e., the reference surface).

[0048] like Figure 2 and Figure 5As shown, in one embodiment, the folding elastic arm 135 includes an extension 1351, an elastic arm body 1353, and a folding portion 1355 connected in sequence. The extension 1351 is connected to the second fixing portion 134 and extends towards the second fixing portion near the welding surface 1312. The end of the folding portion 1355 away from the elastic arm body 1353 is connected to the contact portion 136. The elastic arm body 1353 has a bent structure. The distance between the folding elastic arm 135 and the welding surface 1312 is equal to the distance between the bent protrusion of the elastic arm body 1353 and the welding surface 1312. In this embodiment, the elastic arm body 1353 is bent towards the side away from the welding surface 1312, and the bent protrusion of the elastic arm body 1353 is the lowest end of the folding elastic arm 135. In one embodiment, the folding elastic arm 135 is U-shaped.

[0049] like Figure 2 and Figure 5 As shown, in one embodiment, the angle θ1 formed by the connection between the first end of the elastic arm body 1353 and the extension 1351 is 180 degrees; and / or, the angle θ2 formed by the connection between the second end of the elastic arm body 1353 and the folded portion 1355 is 100 degrees to 150 degrees, so that the elastic arm body 1353 has good elastic strength.

[0050] like Figure 2 and Figure 5 As shown, in one embodiment, terminal 130 further includes a guide portion 137 connected to the end of contact portion 136 away from the folded elastic arm 135. The distance between the end of guide portion 137 away from contact portion 136 and the second fixing portion is less than the distance between the end of guide portion 137 adjacent to contact portion 136 and the second fixing portion. In this embodiment, because guide portion 137 is connected to the end of contact portion 136 away from the folded elastic arm 135, and the distance between the end of guide portion 137 away from contact portion 136 and the second fixing portion is less than the distance between the end of guide portion 137 adjacent to contact portion 136 and the second fixing portion, guide portion 137 is inclined, thereby allowing the female connector to be better guided into place along guide portion 137 when mating with the male connector.

[0051] like Figure 2 and Figure 5 As shown, in one embodiment, the contact portion 136 is a bent structure, and the contact portion 136 is bent and protruded toward the side away from the second fixing portion 134 to form a contact area of ​​the contact portion 136, so that the contact portion 136 can better elastically abut against the end of the male connector and make electrical connection; and / or, the included angle θ3 formed by the connection between the folded portion 1355 and the contact portion 136 is 150 degrees to 175 degrees.

[0052] like Figure 2 and Figure 5 As shown, in one embodiment, the contact area of ​​the contact portion 136 is located between the holding position of the first fixing portion 132 and the holding position of the second fixing portion 134, so that the position height of the contact point of the contact area of ​​the terminal 130 is between the holding position height of the first fixing portion 132 and the holding position of the second fixing portion 134, which more effectively extends the length of the folding elastic arm 135 of the terminal 130. Especially for floating connectors with compact space, it avoids the elastic arm from fatigue due to compression after the female connector 100 and the male connector are mated, thereby improving the mating contact reliability of the electrical connector device; and / or, the terminal 130 is an integrally molded structure, which makes the terminal 130 structurally stronger and more compact.

[0053] like Figure 1 , Figure 2 and Figure 5 As shown, this application also provides an electrical connection device 10, including the female connector 100 described in any of the above embodiments.

[0054] The aforementioned electrical connection device 10, the female connector 100 includes a fixed base 110, a floating base 120, and a terminal 130. The fixed base 110 forms a receiving cavity 111, the floating base 120 is located in the receiving cavity 111 and floats relative to the fixed base 110. A first fixing part 132 is fixed in a first locking hole 113 of the fixed base 110, and a second fixing part 134 is fixed in a second locking hole of the floating base 120. The welding surface 1312 of the welding part 131 can be welded and assembled to the circuit board. Since the first fixing part 132 is fixed to the fixed base 110, the fixed base 110 is fixed relative to the circuit board. The floating part 133 is disposed between the floating base 120 and the fixed base 110. This allows the floating seat 120 to float relative to the fixed seat 110. Since the second fixed part 134 is fixed to the floating seat 120, the contact part 136 is compressed and causes the folded elastic arm 135 to deform after the female connector 100 and the male connector are mated. The distance between the folded elastic arm 135 and the welding surface 1312 of the welding part 131 is less than the distance between the second fixed part 134 and the welding surface 1312, which extends the length of the folded elastic arm 135. Especially for floating connectors with a relatively compact space, this avoids the elastic arm from becoming fatigued due to compression after the female connector 100 and the male connector are mated, thereby improving the mating contact reliability of the electrical connector device.

[0055] like Figure 1 , Figure 2 and Figure 6As shown, the electrical connection device 10 further includes a male connector 200, the tongue 210 of which is inserted into the mating hole 124, so that the male connector is inserted into the floating seat 120, realizing a floating connection between the male connector and the female connector 100. The male terminal 220 of the male connector 200 is used to elastically abut against the contact portion 136 when the male connector is inserted into the mating hole 124, realizing an electrical connection between the male connector and the female connector 100.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A terminal for connecting to a fixed base and a floating base respectively, characterized in that, The terminal includes a welding part, a first fixing part, a floating part, a second fixing part, a folding elastic arm, and a contact part connected in sequence; The first fixing part is used to hold the fixing base; The second fixing part is used to hold the floating seat; the floating part is used to be disposed between the floating seat and the fixing seat; The distance between the retractable elastic arm and the welding surface of the welding part is less than the distance between the second fixing part and the welding surface.

2. The terminal according to claim 1, characterized in that, The distance between the holding position of the first fixing part and the welding surface is less than the distance between the holding position of the second fixing part and the welding surface.

3. The terminal according to claim 2, characterized in that, The distance between the folding elastic arm and the welding surface is less than the distance between the holding position of the first fixing part and the welding surface; the distance between the folding elastic arm and the welding surface is equal to the distance between the lowest point of the folding elastic arm and the welding surface; and / or, The lowest end of the folding elastic arm is higher than the welding surface.

4. The terminal according to claim 1, characterized in that, The folding elastic arm includes an extension, an elastic arm body, and a folding portion connected in sequence. The extension is connected to the second fixing portion and extends toward the second fixing portion in a direction close to the welding surface. The end of the folding portion away from the elastic arm body is connected to the contact portion. The elastic arm body has a bent structure. The distance between the folded elastic arm and the welding surface is equal to the distance between the bending protrusion of the elastic arm body and the welding surface.

5. The terminal according to claim 4, characterized in that, The angle formed by the connection between the first end of the elastic arm body and the extension is 180 degrees; and / or The angle between the second end of the elastic arm body and the folded portion is 100 degrees to 150 degrees.

6. The terminal according to claim 1, characterized in that, It also includes a guide portion connected to the end of the contact portion away from the folding elastic arm, wherein the distance between the end of the guide portion away from the contact portion and the second fixing portion is less than the distance between the end of the guide portion adjacent to the contact portion and the second fixing portion.

7. The terminal according to claim 4, characterized in that, The contact portion has a bent structure, and the contact portion is bent and protrudes towards the side away from the second fixing portion to form the contact area of ​​the contact portion; and / or, The angle formed by the connection between the folded portion and the contact portion is 150 degrees to 175 degrees.

8. The terminal according to any one of claims 1 to 7, characterized in that, The contact area of ​​the contact portion is located between the holding position of the first fixing portion and the holding position of the second fixing portion; and / or The terminal is a one-piece molded structure.

9. A female connector, characterized in that, Includes a fixed base, a floating base, and the terminal as described in any one of claims 1 to 8; The fixed seat has a receiving cavity, and the floating seat is located in the receiving cavity and floats relative to the fixed seat; the fixed seat has a first locking hole, and the first fixing part is located in the first locking hole and fixed to the fixed seat; the floating seat has a second locking hole, and the second fixing part is located in the second locking hole and fixed to the floating seat; the floating part is disposed between the floating seat and the fixed seat, and the floating part is supported by the floating seat; The floating seat has a through hole and a mating hole that are connected. The folding elastic arm passes through the through hole and the contact part is located in the mating hole.

10. An electrical connection device, characterized in that, Includes the female connector as described in claim 9.

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