High-voltage large-current sheet-type jack terminal for electric drive test and electric connector

Abstract

The invention discloses a high-voltage large-current sheet-type jack terminal for an electric drive test and an electric connector, and the jack terminal comprises a butt-joint member, a first terminal, a second terminal, a third terminal, a fourth terminal, a fifth terminal and a sixth terminal, the connecting component is arranged at the other end of the butt joint component and used for assembling; the anti-loose grooves are concavely formed in the outer walls of the two sides of the butt-joint component and located on the upper side and the lower side of the butt-joint opening correspondingly; the anti-loose component is arranged in the anti-loose groove; the number of the inserting grooves is one pair, the inserting grooves are located in the two oppositely-arranged inner walls in the butt joint opening respectively, and an opening is formed in the side, facing the butt joint opening, of each inserting groove; the elastic contact finger is arranged in the inserting groove, and the two sides of the elastic contact finger are pressed by the anti-loosening component; each elastic contact finger comprises a plurality of contact elastic sheets which are obliquely arranged relative to the horizontal direction, and the arrangement directions of the contact elastic sheets of the upper elastic contact finger and the lower elastic contact finger are opposite; the contact spring extends into the butt joint opening through the opening.

Description

Technical Field

[0001] The present invention relates to the technical field of electric connectors, and in particular to a high-voltage and high-current chip-type jack terminal and an electric connector for electric drive testing. Background Art

[0002] If the female terminal of a high-current electrical connector has too few contacts, it will generate a lot of heat when the current passes through it. To handle more current, the number of contact points must be increased. The increase in contacts will also reduce the average force on each contact, thereby extending the time of permanent deformation and increasing the service life of the interface terminal. However, adding too many contacts locally will cause the local elasticity of the reed to decrease, resulting in some contacts being unable to form good contact with the male terminal, which in turn reduces the number of effective contacts.

[0003] In order to solve the above problems, the industry began to use sheet-type jack terminals. The sheet-type terminals adopt stamping technology, which has fast molding speed, low cost, large specific surface area, better heat dissipation effect, and lower temperature rise. In high-voltage connectors, jack terminals are an important component of the contact parts, which directly affects the current carrying capacity and contact stability of the connector.

[0004] When installing the reed into the receiving slot, welding or screws are usually used to fix the reed. However, the quality of welding will directly affect the connection stability between the reed and the receiving slot, which in turn will affect the reliability of the reed, making it difficult to meet the requirements of high current and low temperature rise. During repeated use of screws with high current, the threaded connection will expand and contract due to heat and cold, and it is easy to loosen or even age, resulting in structural instability, which is not suitable for long-term high-frequency plug-in and pull-out use. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-voltage and high-current chip-type jack terminal and an electrical connector for electric drive testing, which have stable current-carrying capacity, are simple to install, and are stable and reliable.

[0006] The present invention is achieved through the following technical solutions:

[0007] A high-voltage and high-current chip-type jack terminal for electric drive testing, comprising:

[0008] A docking member having a U-shaped docking opening in the middle of one end;

[0009] A connecting member is arranged at the other end of the butt-jointed member and is used for assembly;

[0010] Anti-loosening grooves are recessed on the outer walls of both sides of the docking components and are respectively located on the upper and lower sides of the docking opening;

[0011] An anti-loosening component is arranged in the anti-loosening groove;

[0012] A pair of plugging grooves, which are respectively located on two opposite inner walls of the docking opening, and the plugging grooves have an open opening on a side facing the docking opening;

[0013] The elastic contact finger is arranged in the plug-in groove and its two sides are pressed by the anti-loosening component; the elastic contact finger includes a plurality of contact springs arranged obliquely relative to the horizontal direction, and the arrangement directions of the contact springs of the upper and lower elastic contact fingers are opposite; the contact springs extend through the open mouth into the docking opening.

[0014] The present invention is further configured as follows: both sides of the inner wall of the open opening are provided with guide surfaces inclined outward.

[0015] The present invention is further configured as follows: the elastic contact finger comprises a contact finger body, a plurality of fixing holes are evenly opened along the length direction of the contact finger body, and the contact spring is arranged in the fixing hole.

[0016] The present invention is further configured as follows: the contact spring comprises a vertically arranged support portion and a connecting portion obliquely arranged at the upper end thereof, and the top surface of the connecting portion is an arc-shaped structure.

[0017] The present invention is further configured as follows: both sides of the upper portion of the connecting portion are provided with inclined guide surfaces.

[0018] The present invention is further configured as follows: the inclination angle between the connecting portion and the supporting portion is °-°.

[0019] An electrical connector, comprising the above-mentioned jack terminal, further comprising:

[0020] The ferrule has two independently arranged ferrule through holes inside, and the ferrule through holes are used for the insertion of the jack terminal;

[0021] The core plug-in stopper is connected to the core plug-in, the core plug-in stopper has two through holes for the connecting members to pass through, and a spacer is provided in the middle of a side of the core plug-in stopper away from the core plug-in;

[0022] The rear shell is connected with the core plug baffle, and has an installation cavity inside. The installation cavity is provided with a wiring nose inside, and the wiring nose is connected with the connecting component.

[0023] The present invention discloses a high-voltage and high-current chip-type jack terminal for electric drive testing. Compared with the prior art:

[0024] The current of the present invention passes through the copper nose, flows through the bracket, and is transmitted to the sheet conductor by the elastic contact finger. The dual-channel elastic contact finger makes the sheet conductor contact area better and the current carrying capacity greater; through the upper and lower gasket clamping limit structure design, compared with the traditional threaded fixing form, this kind of mechanical limit makes the shock absorption and anti-interference ability stronger, cleverly solves the loosening problem caused by screw installation, and will not bring any impact during the high current, high and low temperature switching process, long service life, and convenient installation; the size of the sheet-type jack terminal in the invention can be adjusted according to the current size, which is very convenient and has a large expansion space; the elastic contact finger in the invention can be plugged and unplugged at a high frequency of more than 50,000 times under this structural design without affecting the use, so the performance is stable, which can greatly reduce the production cost of the enterprise, and at the same time solves the lifelong maintenance-free requirements under extreme working conditions. It has broad application prospects; the special gasket clamping installation design effectively solves the problem of unstable connection during the high current, high and low temperature switching process of automotive electric drive test customers, and is easy to install; the shape of the bracket and the length of the elastic contact finger can be adjusted according to the current size, which is convenient to expand and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the terminal of the present invention.

[0026] Figure 2 It is a side view of the terminal of the present invention.

[0027] Figure 3 It is a front view of the terminal of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the docking component of the present invention.

[0029] Figure 5 It is a front view of the elastic contact finger of the present invention.

[0030] Figure 6 It is a schematic structural diagram of the elastic contact finger of the present invention.

[0031] Figure 7 It is a schematic structural diagram of the electrical connector of the present invention.

[0032] Figure 8 It is a structural schematic diagram of the ferrule of the present invention.

[0033] Fig. 9 It is a structural schematic diagram of the core insert baffle of the present invention.

[0034] Fig.10 It is a cross-sectional view of the electrical connector of the present invention.

[0035] The numbers and letters in the figure represent the corresponding component names:

[0036] Among them: 10, docking member; 20, connecting member; 30, plug-in groove; 40, elastic contact finger; 50, anti-loosening groove; 60, anti-loosening member; 70, guide surface; 80, core; 90, core baffle; 100, rear shell; 110, front shell; 101, docking opening; 102, installation cavity; 103, wiring nose; 104, locking member; 105, connecting hole; 301, open mouth; 401, contact spring; 402, contact finger body; 403, fixing hole; 401a, supporting part; 401b, pressing part; 401c, guiding surface; 801, core through hole 901, through hole; 902, spacer. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] See also Figures 1 to 10As shown, the present invention discloses a high-voltage and high-current sheet-type jack terminal for electric drive testing, comprising: a docking component 10, one end of which has a U-shaped docking opening 101 in the middle, the docking component 10 includes a rectangular main body, the docking opening 101 is arranged in the middle of one end of the rectangular main body, and the docking opening 101 is mainly for inserting a sheet-shaped conductor; a connecting component 20, which is arranged at the other end of the docking component 10, and the connecting component 20 is used for assembly, and the other end of the rectangular main body of the docking component 10 is provided with a connecting main body, and the connecting main body is a rectangular plate-shaped structure The connecting member 20 is arranged at the connecting body, and the connecting member 20 is a rivet nut, which is used to assemble the entire terminal into the interior of the electrical connector later. A boss is also provided between the rectangular body and the connecting body; an anti-loosening groove 50 is recessed on the outer walls of both sides of the docking member 10 and is respectively located on the upper and lower sides of the docking opening 101. The number of the anti-loosening grooves 50 is four. The docking opening 101 divides one end of the docking member 10 into an upper and lower part. The two outer walls of the upper part and the two outer walls of the lower part are each recessed with an anti-loosening groove 50 to prevent loosening. The component 60 is arranged in the anti-loosening groove 50; the plug-in groove 30 is a pair and is respectively located on two opposite inner walls in the docking opening 101, and the plug-in groove 30 has an open mouth 301 on the side facing the docking opening 101; the elastic contact finger 40 is arranged in the plug-in groove 30 and its two sides are pressed by the anti-loosening component 60, the anti-loosening component 60 is an insulating gasket, and each elastic contact finger 40 is provided with an anti-loosening component 60 on both sides. This structure can limit the elastic contact finger 40, which cleverly solves the problem of the prior art that the elastic contact finger 40 is fixed by the screw. The elastic contact finger 40 includes a plurality of contact springs 401 arranged obliquely relative to the horizontal direction. The oblique contact springs 401 facilitate the sheet conductor to be inserted into the docking opening 101 from the side. The inclined contact springs 401 can play a guiding role. The arrangement directions of the contact springs 401 of the upper and lower elastic contact fingers 40 are opposite, so that the sheet conductor can be inserted into the docking opening 101 from two side directions. Figure 1For example, this design allows the sheet conductor to be smoothly inserted from the left or right side, and is guided and subsequently clamped by the contact spring 401. The contact spring 401 extends through the open mouth 301 into the docking opening 101. A certain gap is left between the contact springs 401 of the upper and lower elastic contact fingers 40. When the sheet conductor is inserted into the docking opening 101, the sheet conductor extends into the gap formed by the upper and lower elastic contact fingers 40. Since the contact spring 401 itself has a certain deformation ability and is inclined, it provides an elastic squeezing force on the sheet conductor, so that the sheet conductor is clamped by the contact springs 401 of the two elastic contact fingers 40 and will not be easily loosened. In addition, the arrangement of the contact springs 401 of the upper and lower elastic contact fingers 40 In opposite directions, taking the upper and lower relative contact spring pieces 401 as an example, the upper contact spring piece 401 applies an elastic extrusion force to the upper surface of the sheet-like conductor, and the lower contact spring piece 401 applies an elastic extrusion force to the lower surface of the sheet-like conductor. The elastic extrusion forces applied by the two are applied to different positions of the sheet-like conductor, and the elastic extrusion forces applied by the two are not on the same vertical line. Compared with the upper and lower extrusions of the traditional spring sheet applied on the same vertical line, this structural design of the technical solution has a better clamping effect on the sheet-like conductor. Furthermore, for ease of understanding, since the sheet-like conductor has a certain thickness, the contact spring pieces 401 of the upper and lower elastic contact fingers 40 and the connecting contacts of the sheet-like conductor are staggered up and down, and the elastic extrusion forces applied by them are also staggered.

[0041] As a preferred embodiment of the present technical solution, the elastic contact finger 40 includes four contact springs 401 which are arranged obliquely relative to the horizontal direction; each elastic contact finger 40 includes four contact springs 401, and two elastic contact fingers 40 include eight contact springs 401. The present technical solution provides the possibility of carrying large currents through multiple contacts through the structural setting of eight contact springs 401, and at the same time, it will not cause excessive insertion and extraction force due to too many contacts, which will cause inconvenience in use.

[0042] See also Figure 4 As shown, both sides of the inner wall of the open opening 301 have guide surfaces 70 inclined outwardly arranged; the setting of the guide surfaces 70 is mainly used for the assembly of the elastic contact finger 40, and the inclined outward guide surfaces 70 expand the inlets at both ends of the open opening 301, so as to facilitate the insertion of the elastic contact finger 40 into the plug-in groove 30 for easy assembly; the length of the anti-loosening groove 50 is greater than the length of the plug-in groove 30, each plug-in groove 30 corresponds to two anti-loosening grooves 50, and the plug-in groove 30 is located between the two anti-loosening grooves 50, so as to facilitate the insertion of the elastic contact finger 40 into the plug-in groove 30. Figure 4Taking the angle as an example, the plug-in groove 30 is located at the inner left position of the docking opening 101, the left end of the anti-loosening groove 50 extends to the left side of the plug-in groove 30, and the right end of the anti-loosening groove 50 extends to the middle right position of the outer wall of the docking component 10, that is, the anti-loosening groove 50 completely covers the plug-in groove 30. Therefore, when the anti-loosening component 60 is installed, the anti-loosening component 60 can clamp the elastic contact finger 30 and cover the plug-in groove 30. Since the anti-loosening groove 50 is longer, the anti-loosening component 60 will not easily fall off the anti-loosening groove 50. It is worth noting that the plug-in groove 30 and the anti-loosening groove 50 are both rectangular grooves, and both ends of the two are arc-shaped structures.

[0043] See 5 and Figure 6 As shown, the elastic contact finger 40 includes a contact finger body 402, and a plurality of fixing holes 403 are evenly opened along the length direction of the contact finger body 402, and the contact spring 401 is arranged in the fixing hole 403; the elastic contact finger 40 is stamped, and the contact finger body 402 is a rectangular plate-like structure, and the fixing hole 403 has a contact spring 401, and the contact finger body 402 is located in the plug-in groove 30 during the assembly process; the width of the open mouth 301 is equal to the length of the contact spring 403, and due to the guide surface 70 arranged at the open mouth 301, it can smoothly allow the contact spring 403 to enter its interior.

[0044] See also Figure 5 and Figure 6 As shown, the contact spring 401 includes a vertically arranged support portion 401a and a connecting portion 401b inclined at its upper end, and the top surface of the connecting portion 401b is an arc-shaped structure; the support portion 401a is used to provide support, and its bottom surface is a plane, and its bottom surface is in contact with the bottom surface of the plug-in groove 30; and the inclined connecting portion 401b is used to contact the sheet-like conductor, and its top surface is an arc-shaped structure, and its top surface is in contact with the sheet-like conductor, which can largely avoid damage to the sheet-like conductor.

[0045] See also Figure 6As shown, both sides of the upper part of the connecting portion 401b are provided with inclined guide surfaces 401c; each connecting portion 401b is provided with a guide surface 401c, and the setting of the guide surface 401c facilitates the sheet-like conductor to be inserted into the docking opening 101 from the front direction so as to contact with the contact spring 401. In addition, since the inclined guide surface 401c is provided on the upper part of the connecting portion 401b, the entire elastic extrusion force can also be concentrated on the arc-shaped surface of the upper part, so that the pressing effect is better, and when contacting with the sheet-like conductor, the sheet-like conductor is not easy to loosen from the elastic contact finger 40; the inclined connecting portion 401b and the guide surface 401c provided at the connecting portion 401b can realize that the sheet-like conductor is extended into the docking opening 101 from the front, left and right sides for connection, thereby improving the convenience of connecting the sheet-like conductor.

[0046] As a preferred solution, the inclination angle between the connecting portion 401b and the supporting portion 401a is 90°-135°; further, the inclination angle is 115°.

[0047] The sheet conductor, the docking member 10 , the connecting member 20 , and the elastic contact finger 40 are all made of metal. When the sheet conductor and the elastic contact finger 40 are in contact, the formed path is sheet conductor-elastic contact finger 40-dockage member 10-connecting member 20 .

[0048] See also Figures 1 to 10As shown, an electrical connector includes the above-mentioned jack terminal, and also includes: a plug core 80, the plug core 80 has two independently set plug core through holes 801 running through it, the plug core through holes 801 are for the jack terminal to be inserted, the plug core 80 has two jack terminals inserted inside, the docking member 10 of the jack terminal is located in the plug core through hole 801, after the jack terminal is inserted into the plug core through hole 801, due to the inner wall of the plug core through hole 801, the anti-loosening member 60 of the jack terminal contacts the inner wall, so that the elastic contact finger 40 can be clamped and limited, so that the elastic The contact finger 40 will not get loose; the right end of the plug core 80 is also concavely provided with a buffer groove, and the buffer groove is used to place the boss of the docking member 10. Since the plug core baffle 90 is fixed on the right side of the plug core 80, when the plug core 80 and the plug core baffle 90 are fixed, the boss can prevent the docking member 10 from being offset to the left and right; the plug core baffle 90 is connected to the plug core 80, and the plug core baffle 90 has two through holes 901 for the connection member 20 to pass through. The connection main body of the docking member 10 passes through the through hole 901 and extends to the outside of the through hole 901. The core plug baffle 90 is provided with a spacer 902 in the middle of a side away from the core plug 80. Since two jack terminals are provided, the two jack terminals can be separated by providing the spacer 902 to avoid direct connection between the two jack terminals. The connecting member 20 is located inside the mounting cavity 901; the rear shell 100 is connected to the core plug baffle 90, and has a mounting cavity 102 inside. The spacer 902 is located in the mounting cavity 102. The mounting cavity 102 is provided with a wiring nose 103 inside. The wiring nose 103 is connected to the connecting member 20. The installation cavity 102 is a hollow cavity, the wiring nose 103 is connected to the connecting member 20 through a locking piece 104, the locking piece 104 can be a rivet or a screw, and the rear shell 100 is provided with two openings 105 at positions corresponding to the wiring noses 103, and the openings are used to connect the external connector to the wiring noses 103; in the above technical solution, when the sheet conductor is inserted into the docking opening 101, a passage of sheet conductor-elastic contact finger 40, docking member 10, connecting member 20, wiring nose 103-external connector can be formed.

[0049] The front shell 110 is connected to the ferrule 80 , and the front shell 110 is disposed outside the ferrule 80 .

[0050] The working principle of the electrical connector of the present technical solution is as follows: the current passes through the wiring nose 103, flows through the docking component 10, and is transmitted to the sheet-shaped conductor by the elastic contact finger 40.

[0051] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A high-voltage and high-current chip-type jack terminal for electric drive testing, characterized in that: include: A docking member (10) having a U-shaped docking opening (101) at the middle of one end; A connecting member (20) is arranged at the other end of the docking member (10), and the connecting member (20) is used for assembly; Anti-loosening grooves (50) are recessed on the outer walls of both sides of the docking component (10) and are respectively located on the upper and lower sides of the docking opening (101); An anti-loosening component (60) is arranged in the anti-loosening groove (50); A pair of plugging grooves (30), the plugging grooves (30) being respectively located on two oppositely disposed inner walls in the docking opening (101), and the plugging grooves (30) having an open opening (301) on a side facing the docking opening (101); The elastic contact finger (40) is arranged in the plug-in groove (30) and has two sides pressed by the anti-loosening component (60); the elastic contact finger (40) comprises a plurality of contact springs (401) arranged obliquely relative to the horizontal direction, and the contact springs (401) of the upper and lower elastic contact fingers (40) are arranged in opposite directions; the contact springs (401) extend through the open mouth (301) into the docking opening (101).

2. The high-voltage and high-current chip-type jack terminal for electric drive testing according to claim 1, characterized in that: Both sides of the inner wall of the open opening (301) are provided with guide surfaces (70) arranged obliquely outwards.

3. The high-voltage and high-current chip-type jack terminal for electric drive testing according to claim 1, characterized in that: The elastic contact finger (40) comprises a contact finger body (402), a plurality of fixing holes (403) are evenly opened along the length direction of the contact finger body (402), and the contact spring (401) is arranged in the fixing holes (403).

4. The high-voltage and high-current chip-type jack terminal for electric drive testing according to claim 1, characterized in that: The contact spring (401) comprises a vertically arranged support portion (401a) and a connecting portion (401b) obliquely arranged at the upper end thereof, and the top surface of the connecting portion (401b) is an arc-shaped structure.

5. The high-voltage and high-current chip-type jack terminal for electric drive testing according to claim 4, characterized in that: Both sides of the upper portion of the connecting portion (401b) are provided with inclined guide surfaces (401c).

6. The high-voltage and high-current chip-type jack terminal for electric drive testing according to claim 4, characterized in that: The inclination angle between the connecting portion (401b) and the supporting portion (401a) is 90°-135°.

7. An electrical connector, characterized in that: The jack terminal according to any one of claims 1 to 6 further comprises: The ferrule (80) has two independently arranged ferrule through holes (801) running through the ferrule (80), and the ferrule through holes (801) are used for inserting the jack terminals; A core insert baffle (90) connected to the core insert (80), the core insert baffle (90) having two through holes (901) for the connecting member (20) to pass through, and a spacer (902) is provided in the middle of a side of the core insert baffle (90) away from the core insert (80); The rear shell (100) is connected to the core inserting baffle (90) and has an installation cavity (102) inside. A wiring nose (103) is arranged inside the installation cavity (102), and the wiring nose (103) is connected to the connecting component (20).

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