A high voltage single core cable connector female plug contact terminal
By controlling the insertion depth of the male terminal and applying appropriate pressure to increase the reverse contact pressure of the female terminal, the stability of the high-voltage single-core cable connector under vibration and high temperature is solved, and the stability of long-term connection and the service life are extended.
Patent Information
- Application Number
- CN202411852425.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-04-04
AI Technical Summary
The vibration of the female terminal of the high-voltage single-core cable connector leads to micro-corrosion corrosion, and the elastic structure experiences creep and elastic fatigue in high-temperature environments, resulting in connection failure.
By controlling the insertion depth of the male terminal and applying a suitable size of pressure to the elastic abutment sheet, the reverse contact pressure of the female terminal is indirectly increased, forming a composite terminal to improve connection stability, and increasing the insertion depth by design to maintain stable contact.
It effectively prevents micro-motion corrosion, extends the service life of the connector, and ensures the stability of long-term connection.
Smart Images
Figure CN119764902A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of contact terminals, in particular to a female plug contact terminal of a high-voltage single-core cable connector. Background Art
[0002] High voltage single core cable connector is a connector specially designed for transmitting electric energy in high voltage environment. It is used to connect high voltage cables to ensure stable and reliable power transmission. It plays an important role in new energy vehicles, industrial control systems, power transmission and other fields. High voltage single core cable connector can withstand higher voltage, generally working voltage is above 60V, and some products can even withstand voltage up to 1000V.
[0003] With the rapid development of new energy vehicles, automotive electrical systems are becoming more and more complex, more powerful, and the interaction between systems is becoming closer and closer. Therefore, higher requirements are placed on the reliability of wiring harness terminal connections. The wiring harness terminals used to achieve power and signal transmission are crucial to the reliability of the vehicle wiring harness system, especially the female wiring harness terminals at the end of the high-voltage single-line cable connected to the battery on new energy vehicles. Due to the constant vibration of new energy vehicles during driving, in order to prevent the female wiring harness terminals from being affected by vibration and falling off from the male terminals, higher requirements are placed on the stability of the female terminals of the cable connector.
[0004] Vibration is the main factor affecting the reliability of the wiring harness system and one of the important causes of various electrical failures. In order to ensure the stability between the female terminal and the male terminal of the cable connector, a limit mechanism is usually set between the male terminal and the female terminal to prevent the male terminal and the female terminal from falling off. However, when the front end of the male terminal is inserted into the gap of the female terminal, the spring sheet of the female terminal will be gradually squeezed and deformed, generating reverse contact pressure to achieve the fixation of the male terminal. When the new energy vehicle is driving, the independent movement of the female terminal can be regarded as a relative movement with the male terminal. Due to the existence of reverse contact pressure, the male and female terminals will rub against each other during the relative movement, causing the surface of the coating on the contact surface of the male and female terminals to be worn, that is, the "micro-motion corrosion" phenomenon occurs. For this reason, the prior art has specially designed multiple pairs of female terminal elastic structures to keep the male and female terminals relatively still by increasing the reverse contact pressure to avoid the occurrence of "micro-motion corrosion". However, when current passes through the female terminal, heat is generated, and the elastic structure of the female terminal is intermittently in a high-temperature environment, which causes creep of the elastic structure of the female terminal, and then causes elastic fatigue and stress relaxation of the elastic structure of the female terminal, resulting in a decrease in reverse contact pressure. After a period of use, it is not only more prone to "micro-corrosion" phenomenon, but also because the elastic structure loses its elasticity, a larger gap will be generated between the male terminal, resulting in electrical connection failure, that is, the stability of long-term connection cannot be guaranteed.
[0005] To this end, a high-voltage single-core cable connector female plug contact terminal is proposed. Summary of the invention
[0006] The purpose of the present invention is to provide a high-voltage single-core cable connector female plug contact terminal, which controls the insertion depth of the male terminal and applies appropriate pressure to the elastic abutment piece at the same time, thereby indirectly increasing the reverse contact pressure of the female terminal, thereby fully ensuring the long-term connection stability of the male and female terminals, and effectively preventing the "micro-corrosion" phenomenon between the male and female terminals caused by vibration during vehicle driving, thereby solving the problem of "micro-corrosion" between the male and female terminals caused by vibration during vehicle driving, and the special design of the elastic structure of the female terminal causing the elastic structure to be intermittently in a high-temperature environment, resulting in elastic fatigue, resulting in electrical connection failure and the inability to ensure long-term connection stability.
[0007] To achieve the above object, the present invention provides the following technical solutions:
[0008] A high-voltage single-core cable connector female plug contact terminal comprises a connector housing and a female end connecting piece, wherein the female end connecting piece is mounted parallel to the inner wall of the connector housing, and further comprises a support member, a translation member, an elastic abutment sheet and a transmission extrusion member, wherein the support member is arranged on the inner side of the connector housing and is mounted between two female end connecting pieces, the translation member is connected to the support member and extends between the two female end connecting pieces, the elastic abutment sheet is respectively mounted on the ends of the female end connecting piece, the transmission extrusion member is rotationally connected to the ends of the translation member, and when the front end of the male terminal is plugged into the translation member, the translation member forms a locking connection with the front end of the male terminal and moves further toward the inner side of the connector housing, and when the translation member moves, the transmission extrusion member rotates accordingly and applies pressure to the elastic abutment sheet.
[0009] In the prior art, the terminal material needs to have excellent electrical conductivity and physical properties. Considering the differences in the structure of male and female terminals, brass with better electrical conductivity is generally preferred for male terminals. Under the premise of meeting the electrical conductivity requirements, the female terminal generally selects materials such as phosphor bronze to achieve the reliability of the terminal spring clip. If the elastic contact of the female terminal is replaced with a rigid part, in order to keep the elastic contact of the female terminal in close contact with the male terminal, the elastic contact and the male terminal need to have a sufficiently large friction when in contact. However, when the friction is large, the relative displacement of the elastic contact and the male terminal will cause severe wear of the contact surface, causing serious scratches on the plating of the elastic contact and the surface of the male terminal, resulting in a change in thickness of the male and female terminals after several plug-ins and unplugs due to severe wear of the contact surface, and a short plug-in life; and when the vibration of the vehicle during driving is transmitted to the contact part of the male and female terminals, rigid contact occurs between the male and female terminals, which is very easy to be damaged due to material fatigue. In order to avoid the above problems, in this technical solution, after the male terminal is inserted, it pushes the translation member to move horizontally, and the translation member drives the transmission extrusion member to rotate at a corresponding angle. After the rotation, the transmission extrusion member applies a corresponding pressure to the female end connecting piece, thereby forming a rigid support structure on the outside of the female end connecting piece. The rigid support structure together with the elastic abutment piece forms a composite terminal and indirectly increases the reverse contact pressure of the female terminal. In addition, after multiple plugging and unplugging, the insertion depth of the male terminal can be gradually increased to ensure that the female terminal has sufficient reverse contact pressure, and then after multiple plugging and unplugging, the connection stability between the male and female terminals can also be guaranteed.
[0010] Preferably, the female end connecting piece includes a first connecting piece, a second connecting piece, a through-hole, an oblique groove and an insulating seat, the insulating seat is installed on the inner wall of the connector housing, the first connecting piece is installed on the insulating seat, the second connecting piece is installed on the end of the first connecting piece, and the two second connecting pieces are close to each other away from one end of the first connecting piece, the through-holes are symmetrically arranged on the second connecting piece, and the oblique grooves are arranged on the second connecting piece at equal intervals.
[0011] In the above scheme, the first connecting piece is fixedly connected to the connector housing through an insulating seat. The insulating seat can provide further insulation isolation effect for the high-voltage single-core cable, thereby fully ensuring the insulation safety of the cable connector. In addition, the female end connecting piece adopts a double spring clip design, which enables the female end connecting piece to have a larger reverse contact pressure without special structural design.
[0012] Preferably, the support member includes an arc-shaped piece, a limiting piece, a straight-line notch and a straight-line through groove, the arc-shaped piece is installed between the first connecting pieces, the limiting piece is installed between the inner circumferences of the arc-shaped pieces, the straight-line notches are respectively constructed at the top and bottom of the limiting piece, the straight-line through grooves are respectively constructed at the middle parts of the arc-shaped piece and the limiting piece, and the two straight-line through grooves are arranged at the same height, and the arc-shaped piece is provided with the same through hole as the second connecting piece.
[0013] In the above scheme, the arc-shaped piece is connected between the first connecting pieces, which not only plays a connecting role and improves the stability of the female-end connecting piece, but also effectively increases the heat dissipation area of the female-end connecting piece, thereby improving the heat dissipation effect of the female-end connecting piece. When the high-voltage single-line cable is energized, the heat generated can be quickly dissipated, thereby reducing the temperature difference when the female-end connecting piece is powered on and off, and reducing the adverse effects of the creep phenomenon of the female-end connecting piece.
[0014] Preferably, the translation member includes a translation plate, a rotating plate, a spring, an end notch and a clamping block, the end of the translation plate passes through the straight grooves of the arc plate and the limit plate, the rotating plate is arranged at equal intervals on the upper and lower surfaces of the translation plate, the spring is installed between the rotating plate and the translation plate, the end notch is constructed at the end of the translation plate, and the clamping block is symmetrically rotated and arranged on the inner side of the end notch.
[0015] In the above scheme, when the male terminal is inserted and fits with the female connecting piece, when the edge of the male terminal contacts the edge of the translation piece and the insertion end notch, the clamping block rotates accordingly, and the male terminal forms an interference fit with the translation piece through the clamping block, thereby forming a tight connection between the edge of the male terminal and the translation piece; when the rotating piece passes through the straight slot, the rotating piece moves downward, and after the rotating piece passes through the straight slot, the rotating piece is reset under the action of the spring, and the edge of the rotating piece abuts and fits against the side wall of the limiting piece, thereby preventing the translation piece from sliding freely, thereby effectively improving the relative stability between the male terminal and the female connecting piece.
[0016] Preferably, the rotating side of the rotating plate is close to the side of the translation plate close to the limiting plate, and the maximum rotation angle of the rotating plate is set to 30 degrees.
[0017] In the above scheme, after the rotating piece rotates, it is reset to the maximum rotation angle position under the action of the spring. When the edge of the rotating piece is in contact with the side wall of the limiting piece, the translation piece is prevented from moving in the direction thereof, thereby preventing the male terminal from sliding freely with the translation piece.
[0018] Preferably, the transmission extrusion member includes a fixed block, a rotating rod, an oblique bar, a connecting bar, a cylinder and a fitting sheet, the fixed block is installed side by side at the end of the translation sheet, the rotating rod rotates and passes through the fixed block, the oblique bars are symmetrically installed at both ends of the rotating rod, and the oblique bars pass through a straight notch and a through hole, the end of the connecting bar is connected to the end of the oblique bar, the cylinder passes through the end of the connecting bar, the fitting sheet is installed at the end of the cylinder, and the fitting sheet is fitted with the elastic abutment sheet.
[0019] In the above scheme, since the rotating rod is connected to the end of the translation piece through the fixed block, when the horizontal position of the translation piece changes, the angle of the bevel bar changes accordingly. The longer the length of the translation piece on the side of the limiting piece is, the smaller the degree of the acute angle formed between the end of the bevel bar and the horizontal plane is, so that the bevel bar drives the connecting bar, the cylinder and the bonding piece to apply a corresponding pressure to the second connecting piece, providing a suitable reverse contact pressure for the second connecting piece. At the same time, after the reverse contact pressure reaches a suitable value, the friction force between the second connecting piece and the male terminal reaches a certain value, hindering the further insertion of the male terminal, thereby allowing the male terminal to be at a suitable insertion depth.
[0020] Preferably, the height of the translation piece is equal to the height of the through groove, and a columnar groove adapted to the spring is provided on the surface of the translation piece.
[0021] In the above scheme, when the translation piece passes through the arc piece and the limit piece, the rotating piece flips down to squeeze the spring and the surface of the rotating piece is flush with the surface of the translation piece, thereby ensuring that the translation piece passes through the arc piece and the limit piece smoothly.
[0022] Preferably, a contact plane is constructed on one side of the elastic abutting piece, and the distance between the contact planes on one side close to the arc-shaped piece is greater than the distance on the other side.
[0023] In the above solution, when the male terminal is inserted between the elastic contact pieces, the elastic contact pieces deflect outward, thereby making the contact plane tend to be horizontal, thereby ensuring the contact area between the elastic contact pieces and the male terminal.
[0024] Preferably, the elastic abutment sheet is provided with heat dissipation grooves at equal intervals, and the edges of the heat dissipation grooves are connected to the oblique grooves.
[0025] In the above scheme, under the action of the heat dissipation groove, the heat dissipation effect of the elastic abutment sheet can be improved, and the heat dissipation effect of the female end connecting sheet can be further improved, thereby reducing the temperature difference when the female end connecting sheet is powered on and off, and reducing the adverse effects of the creep phenomenon of the female end connecting sheet.
[0026] Preferably, the insulating seat and the bonding sheet are both made of ceramic gaskets.
[0027] In the above scheme, the ceramic gasket is mainly composed of alumina, and its thermal conductivity (20°C) is as high as 20W / (mK)~30W / (mK), which is much higher than the thermal conductivity of ordinary thermal conductive gaskets. Therefore, it has been widely used under conditions where the heat dissipation requirements of power devices are very stringent, and thus the heat dissipation effect is fully improved while ensuring the insulation effect.
[0028] Compared with the prior art, the present invention has the following beneficial effects:
[0029] 1. By setting the translation part and transmission extrusion part, when the male terminal is inserted, the male terminal and the clamping block form an integrated structure. Then, according to the different insertion depths of the male terminal, the rotation angle of the transmission extrusion part can be adaptively changed, and then the corresponding pressure is applied to the elastic abutment piece to ensure the contact effect between the elastic abutment piece and the male terminal. At the same time, when the pressure applied by the transmission extrusion part to the elastic abutment piece reaches a certain value, the friction force between the elastic abutment piece and the male terminal reaches a certain value, which can effectively prevent the male terminal from being further inserted, forming an effective dynamic balance, ensuring the relative stability of the male and female terminals, and avoiding the "micro-corrosion" phenomenon between the male and female terminals caused by vibration during vehicle driving.
[0030] 2. By providing supporting parts and transmission extrusion parts, when the male terminal is inserted, the different insertion depths of the male terminal are utilized to realize the reinforcement limit between the male and female terminals, without the need for special design of the elastic structure of the female terminal, thereby avoiding the problem of electrical connection failure caused by elastic fatigue caused by the specially designed elastic structure being intermittently exposed to high temperature environment and the inability to ensure long-term connection stability.
[0031] 3. By setting the female end connecting piece, supporting member and translating member, the heat dissipation area of the elastic abutment piece is effectively increased during use, thereby improving the heat dissipation effect of the elastic abutment piece, thereby reducing the temperature difference between the male and female terminals after power is turned on and off, reducing the adverse effects caused by the creep of the female end connecting piece, and is conducive to maintaining the long-term stability of the elastic abutment piece. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0033] Figure 2 It is a schematic diagram of the structure of the female end connecting piece and the elastic abutting piece of the present invention;
[0034] Figure 3 It is a schematic structural diagram of the elastic contact piece of the present invention;
[0035] Figure 4 is a schematic structural diagram of a second connecting sheet of the present invention;
[0036] Figure 5 It is a structural schematic diagram of the support member of the present invention;
[0037] Figure 6 It is a structural schematic diagram of the translation member of the present invention;
[0038] Figure 7 It is an exploded view between the translation member and the limiting piece of the present invention;
[0039] Figure 8 It is a schematic diagram of the structure of the arc-shaped sheet of the present invention;
[0040] Fig. 9 It is a schematic structural diagram of the female end connecting piece of the present invention.
[0041] In the figure: 1, connector housing; 2, female end connecting piece; 3, supporting member; 4, translation member; 5, elastic abutment piece; 6, transmission extrusion member; 21, first connecting piece; 22, second connecting piece; 221, perforation; 222, oblique groove; 23, insulating seat; 31, arc-shaped piece; 32, limiting piece; 321, straight notch; 322, straight through groove; 41, translation piece; 42, rotating piece; 43, spring; 44, end notch; 45, clamping block; 51, heat dissipation groove; 52, contact plane; 61, fixing block; 62, rotating rod; 63, oblique strip; 64, connecting strip; 65, cylinder; 66, bonding piece. DETAILED DESCRIPTION
[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0043] See also Figures 1 to 9 The present invention provides a high voltage single core cable connector female plug contact terminal, the technical solution is as follows:
[0044] Reference Figure 1A high-voltage single-core cable connector female plug contact terminal comprises a connector housing 1, a female end connecting piece 2, the female end connecting piece 2 is in two groups, the female end connecting piece 2 is parallelly mounted on the inner wall of the connector housing 1, and also comprises a support member 3, a translation member 4, an elastic abutment piece 5 and a transmission extrusion member 6, the support member 3 is arranged on the inner side of the connector housing 1, and the support member 3 is installed between the two female end connecting pieces 2, the contact part of the support member 3 and the female end connecting piece 2 is set as a plane, the translation member 4 is slidably connected to the support member 3, one end of the translation member 4 passes through the support member 3, and the translation member 4 extends between the two female end connecting pieces 2, the elastic abutment pieces 5 are respectively mounted on the ends of the female end connecting pieces 2, the elastic abutment pieces 5 are made of brass material, and the transmission extrusion piece 6 is provided. The movable extrusion member 6 is rotationally connected to the end of the translation member 4. When the translation member 4 translates, the transmission extrusion member 6 adaptively changes its angle. When the angle of the transmission extrusion member 6 changes, it will apply different degrees of pressure to the surface of the elastic abutment sheet 5, so that the male terminal is fully in contact with the elastic abutment sheet 5. When the front end of the male terminal is plugged into the translation member 4, the translation member 4 forms a locking connection with the front end of the male terminal and moves further toward the inside of the connector housing 1. When the translation member 4 moves, the transmission extrusion member 6 rotates accordingly and applies pressure to the elastic abutment sheet 5. The pressure applied by the transmission extrusion member 6 on the elastic abutment sheet 5 is positively correlated to the rotation angle of the transmission extrusion member 6. The larger the rotation angle of the transmission extrusion member 6, the greater the pressure applied to the elastic abutment sheet 5.
[0045] In order to effectively increase the heat dissipation area of the elastic abutting piece 5 and ensure the reverse contact pressure of the elastic abutting piece 5, as an embodiment of the present invention, refer to Figure 3 , Figure 4 and Figure 5 The female end connecting piece 2 includes a first connecting piece 21, a second connecting piece 22, a perforation 221, an inclined groove 222 and an insulating seat 23. The insulating seat 23 is mounted on the inner wall of the connector housing 1. The insulating seat 23 is fixed to the connector housing 1 using bolts. The first connecting piece 21 is mounted on the insulating seat 23. The first connecting piece 21 is fixedly fitted with the insulating seat 23. The second connecting piece 22 is mounted on the end of the first connecting piece 21. The second connecting piece 22 is welded and fixed to the first connecting piece 21, and the ends of the two second connecting pieces 22 away from the first connecting piece 21 are close to each other, and the second connecting piece 22 and The first connecting pieces 21 are distributed in an inclined shape so that there is a small spacing between the elastic abutting pieces 5, so that the elastic abutting pieces 5 can fit with the male terminal after the male terminal is inserted. The perforations 221 are symmetrically arranged on the second connecting piece 22. The width of the perforations 221 is designed according to the rotation angle of the transmission extrusion piece 6 to ensure the rotation range of the transmission extrusion piece 6. The oblique grooves 222 are arranged at equal intervals on the second connecting piece 22. The design of the oblique grooves 222 increases the heat dissipation area of the second connecting piece 22, so that the female end connecting piece 2 can quickly dissipate the heat dissipation rate of the elastic abutting piece 5 when it is powered on.
[0046] In order to improve the structural stability of the female end connecting piece 2 and reduce the influence of the vehicle running vibration on the female end connecting piece 2 and thus cause the "fretting corrosion" phenomenon between the female end connecting piece 2 and the male terminal, as an embodiment of the present invention, refer to Figure 6 , Figure 7 and Figure 8 The supporting member 3 includes an arc-shaped piece 31, a limiting piece 32, a straight notch 321 and a straight through groove 322. The arc-shaped piece 31 is installed between the first connecting piece 21. The connecting part of the arc-shaped piece 31 and the first connecting piece 21 is horizontal. The limiting piece 32 is installed between the inner periphery of the arc-shaped piece 31. The opening side of the arc-shaped piece 31 is located on the side away from the elastic abutment piece 5. The straight notch 321 is respectively constructed at the top and bottom of the limiting piece 32. The straight notch 321 is used to adapt to the angle change of the transmission extrusion piece 6 to ensure the smooth rotation of the transmission extrusion piece 6. The straight through groove 322 is respectively constructed in the middle part of the arc-shaped piece 31 and the limiting piece 32, and the two straight through grooves 322 are arranged at the same height. The height of the translation member 4 remains unchanged when it moves horizontally along the straight through groove 322. The arc-shaped piece 31 is provided with a through hole 221 that is the same as the second connecting piece 22, and the shape of the through hole 221 is the same.
[0047] In order to accurately control the insertion depth of the male terminal when the male terminal is inserted, and to make the male terminal fit closely with the translation piece 4, so that the subsequent insertion of the male terminal can drive the translation piece 41 to move horizontally, as an embodiment of the present invention, refer to Figure 6 and Figure 7The translation member 4 includes a translation piece 41, a rotating piece 42, a spring 43, an end notch 44 and a clamping block 45. The end of the translation piece 41 passes through the straight groove 322 of the arc piece 31 and the limit piece 32. The translation piece 41 moves horizontally along the straight groove 322. The rotating pieces 42 are arranged at equal intervals on the upper and lower surfaces of the translation piece 41. A plurality of rotating pieces 42 are arranged on the upper and lower surfaces of the translation piece 41. When the rotating piece 42 is kept in contact with the translation piece 41, its surface is flush with the surface of the translation piece 41. The spring 43 is installed between the rotating piece 42 and the translation piece 41. Under normal conditions, the rotating piece 42 is pushed to an inclined state under the action of the spring 43. When the translation piece 41 passes through the straight groove 322, the rotating piece 42 at the corresponding position is limited by the straight groove 322 and squeezes the spring. The spring 43 is deflected downward so that the translation piece 41 can smoothly pass through the straight slot 322. The end notch 44 is constructed at the end of the translation piece 41. The clamping block 45 is symmetrically rotated and arranged on the inner side of the end notch 44. The clamping block 45 is rotatably connected to the translation piece 41 through the damping bearing seat. When not affected by external force, the extension line of the clamping block 45 is V-shaped, and the clamping block 45 is arranged close to the edge of the end notch 44. When the edge of the male terminal is inserted into the end notch 44, the edge of the male terminal first contacts the clamping block 45 and applies pressure to the clamping block 45. During the process of slowly inserting the male terminal into the end notch 44, the clamping block 45 on the same side tends to be horizontally distributed. Under the action of the clamping block 45, the male terminal and the translation piece 41 form an interference fit, and then the male terminal and the translation piece 41 are locked. The plate 41 forms a tight connection; the rotating side of the rotating piece 42 is close to the side of the translation piece 41 close to the limit piece 32, and the maximum rotation angle of the rotating piece 42 is set to 30 degrees. When the rotating piece 42 passes through the straight groove 322, it is reset under the action of the spring 43. The top of the rotating piece 42 after reset is higher than the top of the translation piece 41, thereby preventing the translation piece 41 from moving toward the side of the female end connecting piece 2. The height value of the translation piece 41 is equal to the height value of the straight groove 322. A columnar groove adapted to the spring 43 is opened on the surface of the translation piece 41. Under the action of the columnar groove, when the spring 43 is squeezed, it is avoided that the thickness of the spring 43 after compression causes the top of the rotating piece 42 to be unable to remain flush with the top of the translation piece 41, so as to ensure that the translation piece 41 can smoothly pass through the straight groove 322. When the male terminal needs to be pulled out from between the elastic abutment pieces 5, use a tongs-type component of appropriate size, insert its tongs arms into the two sides of the limiting piece 32 respectively, hold the handle tightly so that the tongs arms are close to and pressurize the rotating piece 42, and the rotating piece 42 is respectively adapted to the side walls of the arc-shaped piece 31 and the side walls of the limiting piece 32 and rotates downward, and the spring 43 is continuously squeezed until the surface of the rotating piece 42 is flush with the surface of the translation piece 41, and then the translation piece 41 is pulled outward by a distance of a rotating piece 42, and then pressure is applied to the subsequent rotating piece 42 again, and the above operation is repeated until the rotating pieces 42 are all in the space formed between the arc-shaped piece 31 and the two second connecting pieces 22. At this time, the male terminal, which is only acted upon by the elastic force of the elastic abutment piece 5, can be easily pulled out, thereby realizing the separation of the male and female terminals.
[0048] By using the insertion depth of the male terminal to apply corresponding pressure to the elastic abutment piece 5, a dynamic balance can be achieved between the male terminal and the elastic abutment piece 5, which can prevent the male terminal from being inserted too deep and ensure the relative stability of the male terminal and the elastic abutment piece 5. As an embodiment of the present invention, refer to Figure 6 and Figure 7 The transmission extrusion member 6 includes a fixed block 61, a rotating rod 62, an inclined strip 63, a connecting strip 64, a cylinder 65 and a fitting sheet 66. The fixed block 61 is installed side by side at the end of the translation sheet 41. The fixed block 61 is fixed at the end of the translation sheet 41 with an upper and lower displacement. The rotating rod 62 rotates through the fixed block 61. The two rotating rods 62 are distributed in parallel. The inclined strip 63 is symmetrically installed at both ends of the rotating rod 62, and the inclined strip 63 passes through the straight notch 321 and the through hole 221. The end of the inclined strip 63 extends to the outside of the second connecting sheet 22. The end of the connecting strip 64 is connected to the end of the bevel strip 63. When the angle of the connecting strip 64 changes, the bevel strip 63 is driven to rotate accordingly, thereby causing the angle of the bevel strip 63 to change accordingly. When the length of the translation piece 41 exposed from the limiting piece 32 increases, the acute angle formed by the extension line of the bevel strip 63 and the second connecting piece 22 is further reduced, thereby applying different amounts of pressure to the elastic abutment piece 5. The cylinder 65 passes through the end of the connecting strip 64, and the bonding piece 66 is installed at the end of the cylinder 65, and the bonding piece 66 is bonded to the elastic abutment piece 5.
[0049] In order to ensure the contact effect between the elastic contact piece 5 and the male terminal when it expands outward, as an embodiment of the present invention, refer to Figure 2 and Fig. 9 A contact plane 52 is constructed on the adjacent side of the elastic abutment piece 5, and the spacing of the contact plane 52 on the side close to the arc piece 31 is greater than the spacing on the other side. The elastic abutment piece 5 is provided with heat dissipation grooves 51 with equal spacing, and the edges of the heat dissipation grooves 51 are connected to the oblique grooves 222. When the male terminal is inserted between the elastic abutment pieces 5, the elastic abutment piece 5 deflects outward, and the contact plane 52 tends to be horizontal, which fully ensures the contact area between the elastic abutment piece 5 and the male terminal.
[0050] As an embodiment of the present invention, refer to Figure 2 The insulating seat 23 and the bonding sheet 66 are both made of ceramic gaskets, which have a thermal conductivity far higher than that of ordinary thermal conductive gaskets, thereby providing a better heat dissipation effect for the elastic abutting sheet 5.
[0051] Working principle: when the male terminal contacts the translation member 4 after being inserted into the female connecting piece 2, the clamping block 45 is flipped when inserted into the end notch 44, so that the clamping block 45 is tightly fitted between the translation piece 41 and the male terminal, so that the male terminal maintains a tight connection and fit with the translation piece 41 through the interference fit of the clamping block 45 and the translation piece 41, and then the male terminal continues to be inserted, driving the translation piece 41 to move horizontally, and the angles of the oblique strip 63 and the connecting strip 64 are changed accordingly when the translation piece 41 moves further, forming a rigid support structure from the side away from the elastic abutment piece 5, thereby applying a corresponding amount of pressure to the elastic abutment piece 5, thereby increasing the reverse contact pressure of the elastic abutment piece 5, fully ensuring the relative stability between the male terminal and the elastic abutment piece 5, and at the same time, when a certain friction force is reached between the elastic abutment piece 5 and the male terminal, the male terminal is prevented from being further inserted, so that the male terminal can be quickly inserted and positioned;
[0052] When the male terminal is inserted into the notch 44 of the end portion, the edge of the male terminal first contacts the clamping block 45. When the male terminal continues to be inserted into the notch 44 of the end portion, the clamping block 45 is turned over and fully fits with the male terminal. The male terminal is tightly connected to the translation piece 41 through the clamping block 45. Then, when the male terminal continues to be inserted, the male terminal pushes the translation piece 41 to move to one side of the limit piece 32. The length of the translation piece 41 on the other side of the limit piece 32 gradually increases. When the translation piece 41 slowly arcs the arc piece 31 and the straight groove 322 of the limit piece 32, the rotating piece 42 deflects downward, and the spring 43 is in a compressed state. After the rotating piece 42 passes through the straight groove 322, the rotating piece 42 is reset under the action of the spring 43, so that the rotating piece 42 is turned up, and the edge of the rotating piece 42 abuts and fits with the side wall of the limit piece 32, thereby preventing the translation piece 41 from arbitrarily moving.
[0053] During the translation of the translation piece 41, the horizontal position of the fixed block 61 changes, thereby driving the angle between the inclined strip 63 and the horizontal plane. When the length of the translation piece 41 passing through the limit piece 32 gradually increases, the acute angle between the inclined strip 63 and the horizontal plane gradually decreases. Therefore, the inclined strip 63 applies pressure to the elastic contact piece 5 through the connecting strip 64, the cylinder 65 and the fitting piece 66. When the elastic contact piece 5 is subjected to pressure, the friction between the elastic contact piece 5 and the inserted male terminal is further increased until the male terminal is prevented from being inserted further. At this time, the plug-in operation between the male terminal and the elastic contact piece 5 is completed.
[0054] When the male terminal needs to be pulled out from between the elastic abutment pieces 5, use a pliers-type component to insert the two sides of the limit piece 32, hold the handle tightly so that the pliers arm is close to press the rotating piece 42, so that the surface of the rotating piece 42 is flush with the surface of the translation piece 41, and then pull the translation piece 41 toward the elastic abutment piece 5 side by the distance of a rotating piece 42, and then apply pressure to the subsequent rotating piece 42 again, and repeat the above operation until the male terminal that is only acted upon by the elastic force of the elastic abutment piece 5 is easily pulled out, thereby realizing the separation of the male and female terminals.
[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high voltage single core cable connector female plug contact terminal, comprising a connector housing (1) and a female end connecting piece (2), wherein the female end connecting piece (2) is mounted parallel to the inner wall of the connector housing (1), characterized in that: The connector also comprises a support member (3), a translation member (4), an elastic contact piece (5) and a transmission extrusion member (6); the support member (3) is arranged on the inner side of the connector housing (1), and the support member (3) is installed between the two female end connecting pieces (2); the translation member (4) is connected to the support member (3), and the translation member (4) extends between the two female end connecting pieces (2); the elastic contact piece (5) is respectively installed at the ends of the female end connecting pieces (2); the transmission extrusion member (6) is rotationally connected to the ends of the translation member (4); when the front end of the male terminal is plugged into the translation member (4), the translation member (4) forms a locking connection with the front end of the male terminal and moves further toward the inner side of the connector housing (1); when the translation member (4) moves, the transmission extrusion member (6) rotates accordingly and applies pressure to the elastic contact piece (5).
2. A high voltage single core cable connector female plug contact terminal according to claim 1, characterized in that: The female end connecting piece (2) comprises a first connecting piece (21), a second connecting piece (22), a through hole (221), an oblique groove (222) and an insulating seat (23); the insulating seat (23) is mounted on the inner wall of the connector housing (1); the first connecting piece (21) is mounted on the insulating seat (23); the second connecting piece (22) is mounted on the end of the first connecting piece (21); and the ends of the two second connecting pieces (22) away from the first connecting piece (21) are close to each other; the through holes (221) are symmetrically arranged on the second connecting piece (22); and the oblique grooves (222) are arranged on the second connecting piece (22) at equal intervals.
3. A high voltage single core cable connector female plug contact terminal according to claim 2, characterized in that: The support member (3) comprises an arc-shaped piece (31), a limiting piece (32), a straight-shaped notch (321) and a straight-shaped through groove (322); the arc-shaped piece (31) is installed between the first connecting pieces (21); the limiting piece (32) is installed between the inner circumferences of the arc-shaped piece (31); the straight-shaped notch (321) is respectively constructed at the top and bottom of the limiting piece (32); the straight-shaped through groove (322) is respectively constructed at the middle part of the arc-shaped piece (31) and the limiting piece (32); and the two straight-shaped through grooves (322) are arranged at the same height; and the arc-shaped piece (31) is provided with a through hole (221) which is the same as that of the second connecting piece (22).
4. A high voltage single core cable connector female plug contact terminal according to claim 3, characterized in that: The translation member (4) comprises a translation piece (41), a rotating piece (42), a spring (43), an end notch (44) and a clamping block (45); the end of the translation piece (41) passes through a straight groove (322) of the arc piece (31) and the limit piece (32); the rotating piece (42) is arranged at equal intervals on the upper and lower surfaces of the translation piece (41); the spring (43) is installed between the rotating piece (42) and the translation piece (41); the end notch (44) is constructed at the end of the translation piece (41); and the clamping block (45) is symmetrically rotated and arranged inside the end notch (44).
5. A high voltage single core cable connector female plug contact terminal according to claim 4, characterized in that: The rotating side of the rotating plate (42) is close to the side of the translation plate (41) close to the limiting plate (32), and the maximum rotation angle of the rotating plate (42) is set to 30 degrees.
6. The high voltage single-core cable connector female plug contact terminal according to claim 1, characterized in that: The transmission extrusion member (6) comprises a fixed block (61), a rotating rod (62), an oblique strip (63), a connecting strip (64), a cylinder (65) and a bonding sheet (66); the fixed block (61) is mounted side by side at the end of the translation sheet (41); the rotating rod (62) rotates and penetrates the fixed block (61); the oblique strip (63) is symmetrically mounted at both ends of the rotating rod (62); the oblique strip (63) penetrates a straight-line notch (321) and a through hole (221); the end of the connecting strip (64) is connected to the end of the oblique strip (63); the cylinder (65) penetrates the end of the connecting strip (64); the bonding sheet (66) is mounted at the end of the cylinder (65); and the bonding sheet (66) is bonded to the elastic contact sheet (5).
7. The high voltage single-core cable connector female plug contact terminal according to claim 5, characterized in that: The height of the translation piece (41) is equal to the height of the through groove (322), and a columnar groove adapted to the spring (43) is provided on the surface of the translation piece (41).
8. The high voltage single-core cable connector female plug contact terminal according to claim 3, characterized in that: The elastic contact piece (5) is constructed with a contact plane (52) on one side thereof, and the distance between the contact planes (52) on one side close to the arc-shaped piece (31) is greater than the distance between the contact planes (52) on the other side.
9. A high voltage single core cable connector female plug contact terminal according to claim 8, characterized in that: The elastic contact piece (5) is provided with heat dissipation grooves (51) at equal intervals, and the edges of the heat dissipation grooves (51) are connected to the inclined grooves (222).
10. The high voltage single core cable connector female plug contact terminal according to claim 2, characterized in that: The insulating seat (23) and the bonding sheet (66) are both made of ceramic gaskets.