Electrical connector

Abstract

This utility model relates to an electrical connector, including an insulating shell, a first terminal, and a second terminal. The insulating shell has a boss on its rear side, with first and second isolation blocks alternately arranged in sequence. The first and second isolation blocks extend rearward from the rear side of the boss and protrude to the upper and lower sides of the boss. The first isolation block also includes an extension section extending upward beyond the second terminal. The first and second terminals sequentially enter between the first and second isolation blocks. The first and second isolation blocks extend rearward from the rear side of the boss and protrude to the upper and lower sides of the boss, so that when the current between the first and second terminals creeps along the upper and lower sides of the boss, it must cross the first or second isolation block. By increasing the creepage distance, breakdown discharge between the first and second terminals is avoided, eliminating safety hazards. The addition of first and second isolation blocks can meet the transmission requirements of higher voltage signals or currents.

Description

[Technical Field]

[0001] This utility model relates to the field of electrical connector technology, and in particular to an electrical connector that can meet the requirements of high voltage signal or current transmission. [Background Technology]

[0002] Electrical connectors are used to transmit signals or current between different electrical components and are widely used in the field of new energy vehicles. An electrical connector typically consists of an insulating shell and upper and lower rows of terminals housed within the shell. Both the upper and lower rows of terminals are used to connect to external cables or circuit boards. When connecting to the circuit board, the upper and lower rows of terminals are usually arranged in a row. Because the terminal structure itself has relatively weak load-bearing strength and is easily deformed by impact, protrusions are provided on the insulating shell to support and position the first and second terminals when connecting them to the circuit board, ensuring the alignment accuracy of the first and second terminals. The boss has multiple recessed grooves to accommodate the extensions of the upper and lower rows of terminals. A partition is formed between adjacent grooves to isolate adjacent upper and lower terminals. However, existing bosses are usually strip-shaped structures, and the top and bottom surfaces of the partition are flush with the upper and lower sides of the boss, respectively. The upper and lower sides of the boss are both planar structures, which makes the isolation effect of the partition poor. Therefore, when the upper and lower rows of terminals transmit high-voltage signals or current, the creepage path between the upper and lower sides of the partition is short, which easily leads to creepage and subsequent breakdown discharge between the first and second terminals, posing a safety hazard. The existing partition structure cannot meet the requirements for high-voltage signal or current transmission.

[0003] Therefore, it is necessary to design an improved electrical connector to overcome the above problems. [Utility Model Content]

[0004] To address the problems encountered in the background technology, the present invention aims to provide an electrical connector. This connector features alternating first and second isolation blocks protruding from a boss. Both the first and second isolation blocks extend rearward from the rear side of the boss and protrude to its upper and lower sides. The top surfaces of the first and second isolation blocks are higher than the upper side of the boss, while their bottom surfaces are lower than the lower side of the boss. This design increases the creepage distance between the first and second terminals, requiring them to cross either the first or second isolation block when creeping along the upper and lower sides of the boss. This eliminates safety hazards. Furthermore, the addition of the first and second isolation blocks can meet the transmission requirements of higher voltage signals or currents. Furthermore, the first isolation block also includes an extension section extending upward beyond the top wall of the second terminal hole. The extension section is located between two adjacent sets of second insertion parts, and the upper end face of the extension section is located above the upper side of the second insertion part. The extension section can effectively increase the creepage distance between two adjacent sets of second insertion parts. At the same time, the extension section can also increase the effective area for blocking creepage in the vertical direction between the two sets of second insertion parts, thereby meeting the transmission requirements of higher voltage signals or currents.

[0005] To achieve the above objectives, the present invention employs the following technical means:

[0006] An electrical connector, comprising:

[0007] An insulating shell has a row of spaced-apart first terminal holes and a row of spaced-apart second terminal holes in a left-right direction. Each second terminal hole is located below each first terminal hole. A boss protrudes rearward from below the row of second terminal holes on the rear side of the insulating shell. The boss has multiple first isolation blocks and multiple second isolation blocks. The multiple first isolation blocks are arranged on the left and right sides of each second terminal hole, and the multiple second isolation blocks are arranged between two adjacent first isolation blocks. The first isolation blocks and second isolation blocks are arranged alternately on the boss. The first isolation blocks and second isolation blocks extend rearward from the rear side of the boss and protrude to the upper and lower sides of the boss. The top surfaces of the first isolation blocks and second isolation blocks are higher than the upper side of the boss, and the bottom surfaces of the first isolation blocks and second isolation blocks are lower than the lower side of the boss. The first isolation block also includes an extension section extending upward beyond the top wall of the second terminal hole.

[0008] A plurality of first terminals are mounted on the insulating shell. Each first terminal includes a first insertion portion inserted into the first terminal hole, a first extension portion protruding rearward from the first insertion portion into the first terminal hole, and a first conductive portion extending from the first extension portion.

[0009] A plurality of second terminals are mounted on the insulating shell. Each second terminal includes a second insertion portion inserted into a second terminal hole, a second extension portion protruding rearward from the second insertion portion into the second terminal hole, and a second conductive portion extending from the second extension portion.

[0010] The first extension and the second extension sequentially enter between each of the first isolation blocks and the second isolation blocks. The first terminal and the second terminal located between two adjacent first isolation blocks form a group. The extension section is located between two adjacent groups of second insertion parts. The second isolation block is located between the first extension and the second extension in the same group.

[0011] In one embodiment, the first isolation block includes a first blocking segment protruding below the boss, a second blocking segment protruding behind the boss, and a third blocking segment protruding above the boss; the first blocking segment, the second blocking segment, the third blocking segment and the extension segment are connected sequentially, and the first blocking segment, the second blocking segment and the third blocking segment block between two adjacent sets of the first extension and the second extension.

[0012] In one embodiment, a sloping support surface is provided below the boss, the sloping support surface extending from back to front at an angle gradually away from the upper surface of the boss, and the front end of the first blocking segment extends to connect with the sloping support surface.

[0013] In one embodiment, the first blocking segment is inclined on at least one side in the left-right direction, and the width of the first blocking segment in the left-right direction gradually increases from bottom to top; the third blocking segment is inclined on at least one side in the left-right direction, and the width of the third blocking segment in the left-right direction gradually increases from top to bottom.

[0014] In one embodiment, the first isolation block and the second isolation block are provided with inclined guide surfaces on both the left and right sides. The guide surfaces are used to guide the first extension and the second extension into the space between the adjacent first isolation block and the second isolation block. The extension is provided with inclined guide surfaces on both sides in the left and right direction. The guide surfaces are used to guide the connection between the second insertion part and the second extension.

[0015] In one embodiment, the angle between the side of the first blocking segment and the lower side of the boss is equal to the angle between the side of the third blocking segment and the upper side of the boss.

[0016] In one embodiment, the second isolation block includes a lower protrusion section protruding below the boss, a rear protrusion section protruding behind the boss, and an upper protrusion section protruding above the boss; the lower protrusion section, the rear protrusion section, and the upper protrusion section are connected sequentially.

[0017] In one embodiment, the lower convex segment is inclined on at least one side in the left-right direction, and the width of the lower convex segment in the left-right direction gradually increases from bottom to top; the upper convex segment is inclined on at least one side in the left-right direction, and the width of the upper convex segment in the left-right direction gradually increases from top to bottom.

[0018] Wherein, the angle between the side surface of the lower convex section and the lower side surface of the boss is equal to the angle between the side surface of the upper convex section and the upper side surface of the boss.

[0019] In one embodiment, both the first insertion part and the second insertion part are provided with a contact section, a fixing section and a connecting section from front to back. The width of the connecting section is greater than the width of the contact section. A connecting surface is provided on one side of the connecting section. The connecting surfaces of the first terminal and the second terminal are both offset from the second stop in the vertical direction. The connecting sections of the first terminal and the second terminal in the same group are aligned in the vertical direction, while the first extension part and the second extension part are staggered in the vertical direction.

[0020] In one embodiment, a plurality of alignment blocks are also protruding on the rear side of the insulating shell and distributed on the left and right sides of each first terminal hole, and the alignment blocks and the extensions of each first isolation block are aligned with each other in the vertical direction.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The first and second isolation blocks extend rearward from the rear side of the boss and protrude to the upper and lower sides of the boss. The top surfaces of the first and second isolation blocks are higher than the upper side of the boss, and the bottom surfaces of the first and second isolation blocks are lower than the lower side of the boss. This means that when the current between the first and second terminals creeps along the upper and lower sides of the boss, it needs to cross the first or second isolation blocks, increasing the creepage distance between the first and second terminals. This avoids direct breakdown discharge between the first and second terminals, eliminates safety hazards, and the addition of the first and second isolation blocks can meet the transmission requirements of higher voltage signals or currents. Furthermore, the first isolation block also includes an extension section extending upward beyond the top wall of the second terminal hole. The first terminal and the second terminal located between two adjacent first isolation blocks form a group. The extension section is located between the second insertion parts of the two adjacent groups, and the upper end face of the extension section is located above the upper side of the second insertion part. The extension section can effectively increase the creepage distance between the two adjacent groups of second insertion parts, thereby increasing the creepage distance between the first terminal and the second terminal between the first isolation block and the second isolation block. Moreover, the extension section can also increase the effective area for blocking creepage in the vertical direction between the two groups of second insertion parts, thereby meeting the transmission requirements of higher voltage signals or currents.

[0023] 2. The first blocking section protruding below the boss, the second blocking section protruding behind the boss, the third blocking section protruding above the boss, and the extension section extending upward to the insulating shell are connected in sequence to realize the multi-angle support and reinforcement of the boss by the first isolation block, improve the load-bearing strength of the boss, prevent the boss from being deformed by impact, and thus improve the stability of the support and positioning of the first terminal and the second terminal.

[0024] 3. An inclined bracing surface is provided below the boss to improve the load-bearing strength of the boss in the vertical direction, prevent the boss from being deformed by impact, and improve the stability of the support and positioning of the first and second terminals. The first blocking section extends to the bracing surface through its front end, which can strengthen the bracing surface. In turn, by increasing the strength of the bracing surface, the load-bearing strength of the boss is further enhanced, thus improving the stability of the support and positioning of the first and second terminals.

[0025] 4. At least one side of the first blocking section is inclined in the left-right direction, and the width of the first blocking section gradually increases from bottom to top in the left-right direction. At least one side of the third blocking section is also inclined in the left-right direction, and the width of the third blocking section gradually increases from top to bottom in the left-right direction. Compared with the structure with a vertical orientation, the inclined side structure can further improve the creepage distance of the first and third blocking sections in the left-right direction, further avoid breakdown discharge between the first and second terminals, and meet the transmission requirements of higher voltage signals or currents.

[0026] 5. Both the left and right sides of the first and second isolation blocks are provided with inclined guide surfaces, and the extension section is provided with guide surfaces on both sides in the left and right directions. The inclined guide surfaces and guide surfaces also increase the creepage distance of the first and second isolation blocks in the left and right directions, thereby avoiding breakdown discharge between the first terminal and the second terminal and meeting the transmission requirements of higher voltage signals or currents. Furthermore, the inclined guide surfaces can guide the first extension or the second extension to be embedded between adjacent first and second isolation blocks, and the guide surfaces can guide the second terminal to be inserted into the second terminal hole, thereby improving the assembly efficiency of installing the first and second terminals into the insulating shell, avoiding the first and second terminals from scraping the insulating shell and generating debris during the installation process, which would lead to poor connection, improving assembly efficiency while ensuring yield.

[0027] 6. The angle between the side of the first blocking section and the lower side of the boss is equal to the angle between the side of the third blocking section and the upper side of the boss, ensuring a more uniform electric field intensity distribution at the upper and lower sides of the boss, reducing the risk of local breakdown, and further meeting the transmission requirements of higher voltage signals or currents. [Attached Image Description]

[0028] Figure 1 This is an exploded structural diagram of the electrical connector according to the first embodiment of the present invention;

[0029] Figure 2 for Figure 1 An enlarged view of part A in the middle circle;

[0030] Figure 3 for Figure 1 Schematic diagram of the structure of the Zhongdian connector;

[0031] Figure 4 for Figure 3 An enlarged view of section B in the middle circle;

[0032] Figure 5 for Figure 3 Cross-sectional view at the CC position;

[0033] Figure 6 for Figure 3 Schematic diagram of the cross section at the DD position;

[0034] Figure 7 for Figure 3 Cross-sectional view at the location of the middle EE;

[0035] Figure 8 for Figure 1 Schematic diagram of the middle insulating shell;

[0036] Figure 9 for Figure 8An enlarged diagram of the part circled in the middle, F.

[0037] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0038]

[0039] [Specific Implementation Examples]

[0040] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0046] It should be noted that, according to Figures 1 to 9 As shown, in this embodiment of the invention, the X-axis, Y-axis, and Z-axis intersect each other in pairs. For ease of explanation, the left-right direction is defined as the X-axis, the front-back direction as the Y-axis, the positive direction of the Y-axis as the rear, and the up-down direction as the Z-axis, the positive direction of the Z-axis as the top. In this embodiment, the X-axis and Y-axis are coplanar and perpendicular to each other, and the Z-axis is perpendicular to the common plane of the X-axis and Y-axis. The front-back, left-right, and up-down directions are all perpendicular to each other. Further explanation: the term "parallel" in this application includes not only absolute parallelism but also approximate parallelism as commonly understood in engineering, such as "parallel" referring to an angle of -1° to 1° between lines, lines and surfaces, or surfaces. Similarly, "perpendicular" also includes not only absolute perpendicularity but also approximate perpendicularity as commonly understood in engineering, such as "perpendicular" referring to an angle of 89° to 91° between lines, lines and surfaces, or surfaces. Equal distances or equal angles include not only absolute equality, but also approximate equality as commonly understood in engineering, which means there can be a certain degree of error, such as a tolerance range of -1% to 1%.

[0047] Please see Figures 1 to 9The electrical connector 1 of the first embodiment of the present invention includes an insulating shell 10, a plurality of first terminals 20 mounted on the insulating shell 10, and a plurality of second terminals 30 mounted on the insulating shell 10. The insulating shell 10 is used to install and fix the first terminals 20 and the second terminals 30. When the insulating shell 10 is inserted into a mating electrical connector 1, the plurality of first terminals 20 and the plurality of second terminals 30 are engaged with the mating terminals in the mating electrical connector 1 to transmit signals or current.

[0048] The front end of the insulating shell 10 is used to be inserted into the mating plug-in connector 1. The insulating shell 10 has a row of spaced first terminal holes 11 and a row of spaced second terminal holes 12 in the left-right direction. The first terminal holes 11 and the second terminal holes 12 penetrate the insulating shell 10 in the front-back direction. Each second terminal hole 12 is located below each first terminal hole 11. The first terminal hole 11 is used to install the first terminal 20, and the second terminal hole 12 is used to install the second terminal 30. In this embodiment, the number of first terminal holes 11 is the same as the number of second terminal holes 12. In the vertical direction, each second terminal hole 12 is arranged directly below each first terminal hole 11. It can be understood that in the vertical direction, each second terminal hole 12 and each first terminal hole 11 can also be staggered. The user can arrange the relative positions of the first terminal holes 11 and the second terminal holes 12 according to the actual use needs. Here, there is no limitation on whether the first terminal holes 11 and the second terminal holes 12 are arranged directly opposite each other in the vertical direction. It is sufficient to ensure that each of the first terminal holes 11 and the second terminal holes 12 is arranged in a row, and that a row of second terminal holes 12 is located below a row of first terminal holes 11.

[0049] The insulating shell 10 has a protrusion 13 protruding rearward on its rear side. The protrusion 13 is located below a row of second terminal holes 12. The protrusion 13 is elongated and is used to limit the exposed parts of the first terminal 20 and the second terminal 30 to ensure that the first terminal 20 and the second terminal 30 are accurately positioned when connected to external electronic components, including cables or circuit boards and other components. Understandably, the rear side of the boss 13 can abut against and support the first terminal 20 and the second terminal 30, thereby positioning the first terminal 20 and the second terminal 30 through direct contact. In another embodiment, the rear side of the boss 13 may not directly contact the first terminal 20 and the second terminal 30, but rather leave a certain gap, so that when the first terminal 20 and the second terminal 30 shift forward in a strong vibration environment, they can be supported and limited by the rear side of the boss 13. The boss 13 prevents the first terminal 20 and the second terminal 30 from shifting beyond a predetermined position by limiting their movement, thereby achieving the positioning of the first terminal 20 and the second terminal 30, while protecting the first terminal 20 and the second terminal 30 from being collided and tilted outward. Here, there is no restriction on whether the rear side of the boss 13 directly contacts the first terminal 20 and the second terminal 30, as long as the boss 13 can prevent the first terminal 20 and the second terminal 30 from shifting forward beyond a preset position to achieve the positioning function.

[0050] The boss 13 is provided with a plurality of first isolation blocks 14 and a plurality of second isolation blocks 15. The plurality of first isolation blocks 14 are arranged on the left and right sides of each second terminal hole 12, that is, two adjacent second terminal holes 12 are blocked by a first isolation block 14. The plurality of second isolation blocks 15 are arranged between two adjacent first isolation blocks 14, that is, two adjacent first isolation blocks 14 are blocked by a second isolation block 15. The first isolation blocks 14 and the second isolation blocks 15 are arranged alternately on the boss 13. The first isolation block 14 and the second isolation block 15 extend rearward from the rear side of the boss 13 and protrude to the upper and lower sides of the boss 13. That is, the first isolation block 14 and the second isolation block 15 protrude from the lower side, rear side, and upper side of the boss 13. The top surfaces of the first isolation block 14 and the second isolation block 15 are higher than the upper side of the boss 13, and the bottom surfaces of the first isolation block 14 and the second isolation block 15 are lower than the lower side of the boss 13. This increases the creepage distance of the current along the lower side, rear side, and upper side of the boss 13, preventing the current from creeping along the lower side, rear side, and upper side of the boss 13. The first terminal 20 and the second terminal 30 are connected by a breakdown, ensuring the transmission of high-voltage signals or current. The first isolation block 14 also includes an extension section 144 that extends upward beyond the top wall of the second terminal hole 12. Since the second terminal hole 12 is used for the insertion of the second terminal 30, the extension section 144 extending upward beyond the top wall of the second terminal hole 12 can effectively increase the creepage distance between two adjacent second terminals 30. In addition, the extension section 144 can also increase the effective height of the first isolation block 14 in blocking creepage in the vertical direction, thereby meeting the transmission requirements of higher voltage signals or current.

[0051] The first isolation block 14 includes a first blocking section 141 protruding below the boss 13, a second blocking section 142 protruding behind the boss 13, and a third blocking section 143 protruding above the boss 13. The first blocking section 141 is elongated and extends in the front-to-back direction. Its rear end is connected to the second blocking section 142. The second blocking section 142 is elongated and extends in the vertical direction. Its top end is connected to the third blocking section 143. The third blocking section 143 is elongated and extends in the front-to-back direction. Its front end is connected to an extension section 144, which also extends in the vertical direction. The first blocking section 141, the second blocking section 142, and the third blocking section 143 are all elongated and extend in the vertical direction. The blocking section 143, also known as the extension section 144, is connected sequentially. The first blocking section 141 increases the creepage distance on the lower side of the boss 13, the second blocking section 142 increases the creepage distance on the rear side of the boss 13, and the third blocking section 143 increases the creepage distance on the upper side of the boss 13. The extension section 144 is disposed on the rear side of the insulating shell 10. The extension section 144 increases the creepage distance between two adjacent second terminal holes 12, thereby increasing the creepage distance on both sides of the second terminal 30 in all directions through the first isolation block 14. In this embodiment, each first terminal 20 and each second terminal 30 form multiple groups. The first terminal 20 and the second terminal 30 located between two adjacent first isolation blocks 14 form one group. The first isolation block 14 blocks the creepage distance between two adjacent groups to improve the creepage distance between the two adjacent groups and prevent breakdown discharge between the first terminal 20 and the second terminal 30 of the two adjacent groups.

[0052] Below the boss 13, a bracing surface 131 is provided. The bracing surface 131 is the lower side of the boss 13 and extends gradually away from the upper side of the boss 13 from back to front. The bracing surface 131 enhances the load-bearing capacity of the boss 13 in the vertical direction, preventing the boss 13 from being deformed by impact, thereby improving the stability of the positioning of the first terminal 20 and the second terminal 30. In this embodiment, the rear end of the first blocking section 141 is flush with the rear side of the second blocking section 142, and the front end of the first blocking section 141 extends to connect with the bracing surface 131. This increases the hardness of the bracing surface 131 through the first blocking section 141, further strengthening the load-bearing capacity of the boss 13 and ensuring the stability of the boss 13 in positioning the first terminal 20 and the second terminal 30.

[0053] The first blocking segment 141 and the third blocking segment 143 are arranged parallel to each other on the upper and lower sides of the boss 13. The first blocking segment 141 is inclined on at least one side in the left-right direction, and its width gradually increases from bottom to top. The third blocking segment 143 is also inclined on at least one side in the left-right direction, and its width gradually increases from top to bottom. The inclined sides of the first blocking segment 141 and the third blocking segment 143, compared with the existing rectangular strip structure of the first blocking segment 141 and the third blocking segment 143, effectively increases the creepage distance of the first blocking segment 141 and the third blocking segment 143 in the left-right direction, further avoiding breakdown discharge between different groups of first terminals 20 and second terminals 30, and meeting the transmission requirements of higher voltage signals or currents. In this embodiment, the left and right sides of the first blocking segment 141 and the third blocking segment 143 are symmetrically arranged.

[0054] The angle between the side of the first blocking segment 141 and the lower side of the boss 13 is equal to the angle between the side of the third blocking segment 143 and the upper side of the boss 13. Here, the side of the first blocking segment 141 refers to the side that is inclined in the left-right direction, and the side of the third blocking segment 143 refers to the side that is inclined in the left-right direction. The same applies below. That is, the inclination angle of the side of the first blocking segment 141 is equal to the inclination angle of the side of the third blocking segment 143. The first blocking segment 141 is located on the upper side of the boss 13, and the third blocking segment 143 is located on the lower side of the boss 13. The same inclination angle can ensure that the electric field intensity distribution at the upper and lower sides of the boss 13 is more uniform, reducing the risk of local breakdown due to electric field concentration, thereby meeting the transmission requirements of higher voltage signals or currents.

[0055] The second isolation block 15 is disposed between two adjacent first isolation blocks 14. Since the first terminal 20 and the second terminal 30 of the same group are located between two adjacent first isolation blocks 14, the second isolation block 15 is used to block the first terminal 20 and the second terminal 30 of the same group. The second isolation block 15 includes a lower protruding section 151 protruding below the boss 13, a rear protruding section 152 protruding behind the boss 13, and an upper protruding section 153 protruding above the boss 13. The lower protruding section 151 is elongated and extends in the front-back direction, the rear protruding section 152 is elongated and extends in the vertical direction, and the upper protruding section 153 is elongated and extends in the front-back direction. The lower protruding section 151, the rear protruding section 152, and the upper protruding section 153 are connected sequentially. The second isolation block 15 spans the outside of the boss 13. The second isolation block 15 is arranged in parallel with the first blocking section 141. The lower protrusion 151 is used to increase the creepage distance on the lower side of the boss 13. The rear protrusion 152 is arranged in parallel with the second blocking section 142. The rear protrusion 152 is used to increase the creepage distance on the rear side of the boss 13. The upper protrusion 153 is arranged in parallel with the third blocking section 143. The upper protrusion 153 is used to increase the creepage distance on the upper side of the boss 13. Thus, the creepage distance between the first terminal 20 and the second terminal 30 of the same group is increased in all directions by the second isolation block 15.

[0056] The lower convex section 151 is inclined on at least one side in the left-right direction, and the width of the lower convex section 151 gradually increases from bottom to top in the left-right direction. The side position of the lower convex section 151 corresponds to the side position of the first blocking section 141. The upper convex section 153 is inclined on at least one side in the left-right direction, and the width of the upper convex section 153 gradually increases from top to bottom in the left-right direction. The side position of the upper convex section 153 corresponds to the side position of the third blocking section 143. The sides of the lower convex section 151 and the upper convex section 153 can increase the creepage distance of the lower convex section 151 and the upper convex section 153 in the left-right direction, thereby meeting the transmission requirements of higher voltage signals or currents. Here, the side of the lower convex section 151 refers to the side that is inclined in the left-right direction, and the side of the upper convex section 153 refers to the side that is inclined in the left-right direction. The same applies below. In this embodiment, the angle between the side of the lower convex section 151 and the lower side of the boss 13 is equal to the angle between the side of the upper convex section 153 and the upper side of the boss 13. That is, the tilt angle of the side of the lower convex section 151 is equal to the tilt angle of the side of the upper convex section 153. This has the same effect as the tilt angle of the side of the first blocking section 141 being equal to the tilt angle of the side of the third blocking section 143, ensuring a more uniform electric field distribution at the positions of the upper and lower sides of the boss 13, avoiding local breakdown, and meeting the transmission requirements of higher voltage signals or currents. At the same time, the angle between the side of the lower convex section 151 and the lower side of the boss 13 is equal to the angle between the side of the first blocking section 141 and the lower side of the boss 13, thereby making the electric field distribution on both sides of the first terminal 20 or the second terminal 30 located between the first isolation block 14 and the second isolation block 15 uniform. This can also avoid unilateral local breakdown and meet the transmission requirements of higher voltage signals or currents. Furthermore, the lower convex section 151 is symmetrically arranged on the left and right sides, and the upper convex section 153 is symmetrically arranged on the left and right sides.

[0057] Inclined guide surfaces S are provided on both the left and right sides of the first isolation block 14 and the second isolation block 15. The guide surfaces S are correspondingly arranged on both sides of the second blocking section 142 and the rear protrusion section 152 in the left and right directions. The distance between the guide surfaces S on both sides of the same second blocking section 142 or rear protrusion section 152 in the left and right directions gradually increases from back to front. The guide surfaces S are used to guide the first terminal 20 and the second terminal 30 into the positioning position of the boss 13 during assembly. The extension section 144 has inclined guide surfaces 145 on both sides in the left-right direction. The distance between the guide surfaces 145 on both sides gradually increases from back to front in the left-right direction. That is, along the rear side of the extension section 144 towards the rear side of the insulating shell 10, the guide surfaces 145 on both sides extend inclinedly towards the second terminal holes 12 on both sides. Specifically, the guide surface 145 on the left side extends inclinedly towards the left second terminal hole 12, and the guide surface 145 on the right side extends inclinedly towards the right second terminal hole 12. The guide surfaces 145 are used to guide the second terminal 30 into the second terminal hole 12 during assembly. The guide surface S and the guide surface 145 can effectively reduce the distance between the second terminal 30 and the second terminal hole 12. To minimize scratching between the first terminal 20 and the second terminal 30 and the insulating shell 10 during assembly, plastic debris generated by scratching is avoided. Plastic debris can affect the quality of signal or current transmission. Therefore, the guide surface S and guide surface 145 reduce scratching to ensure the quality of signal or current transmission. Furthermore, by tilting the guide surface S and guide surface 145, the creepage distance between the first isolation block 14 and the second isolation block 15 in the left-right direction is increased, thereby preventing breakdown discharge between the first terminal 20 and the second terminal 30, and also preventing breakdown discharge between adjacent second terminals 30, meeting the requirements for higher voltage signal or current transmission. In this embodiment, the guide surfaces S on the left and right sides of the second blocking section 142 are symmetrically arranged, the guide surfaces S on the left and right sides of the rear protruding section 152 are symmetrically arranged, and the guide surfaces 145 on the left and right sides of the extension section 144 are symmetrically arranged. The angle between the guide surface S and the rear side of the boss 13 is smaller than the angle between the side of the first blocking section 141 and the lower side of the boss 13. The angle between the guide surface 145 and the rear side of the insulating shell 10 is smaller than the angle between the side of the third blocking section 143 and the upper side of the boss 13. That is, in the first isolation block 14, the tilt angle between the guide surface S and the guide surface 145 is smaller than the tilt angle between the side of the first blocking section 141 and the side of the third blocking section 143. Similarly, in the second isolation block 15, the tilt angle of the guide surface S is smaller than the tilt angle between the side of the upper convex section 153 and the side of the lower convex section 151. The smaller tilt angle makes the tilt posture of the guide surface S and the guide surface 145 more gentle, thereby making the guide surface S and the guide surface 145 better at guiding the first terminal 20 and the second terminal 30, and improving the assembly efficiency.

[0058] Please see Figures 1 to 7Each first terminal 20 is mounted on the insulating shell 10. Each first terminal 20 includes a first insertion portion 21 inserted into a first terminal hole 11, a first extension portion 22 protruding rearward from the first insertion portion 21 into the first terminal hole 11, and a first conductive portion 23 extending from the first extension portion 22. The first insertion portion 21 is engaged with the insulating shell 10 to fix the first terminal 20 onto the insulating shell 10. The first conductive portion 23 connects to external electronic components, including cables or circuit boards and other components. The first extension portion 22 connects between the first insertion portion 21 and the first conductive portion 23. Each second terminal 30 is mounted on the insulating shell 10. Each second terminal 30 includes a second insertion portion 31 inserted into a second terminal hole 12, a second extension portion 32 protruding rearward from the second insertion portion 31 into the second terminal hole 12, and a second conductive portion 33 extending from the second extension portion 32. The second insertion part 31 is located between two adjacent extension sections 144. The second insertion part 31 is inserted into the second terminal hole 12 and engages with the insulating shell 10 to fix the second terminal 30 onto the insulating shell 10. The second conductive part 33 connects to external electronic components. The second extension part 32 connects between the second insertion part 31 and the second conductive part 33. During the insertion of the first terminal 20 and the second terminal 30 into the insulating shell 10, the guide surface S guides the first extension part 22 and the second extension part 32 into the space between adjacent first isolation blocks 14 and second isolation blocks 15. The guide surface 145 guides the connection between the second insertion part 31 and the second extension part 32. In this embodiment, both the first conductive part 23 and the second conductive part 33 are used for soldering and fixing to an external circuit board.

[0059] Both the first insertion part 21 and the second insertion part 31 are provided with a contact section 211, a fixing section 212, and a connecting section 213 from front to back. The contact section 211 is elongated and extends in the front-back direction. The contact section 211 is inserted into the insulating shell 10 from back to front. The contact section 211 is used to engage with the mating terminals in a compatible mating connector (not shown in the figure) to ensure the transmission of signals or current. The fixing section 212 is connected to the contact section 211. The left and right sides of the fixing section 212 have protrusions. The fixing section 212 is engaged with the insulating shell 10 through the protrusion structure, thereby fixing the contact section 211 inside the insulating shell 10. The connecting segment 213 is located on the side of the fixed segment 212 away from the contact segment 211. The width of the connecting segment 213 is greater than the width of the contact segment 211. In the first terminal 20, the connecting segment 213 connects the fixed segment 212 and the first extension 22. In the second terminal 30, the connecting segment 213 connects the fixed segment 212 and the second extension 32. The guide surface 145 is used to guide the connecting segment 213 of the second terminal 30 into the second terminal hole 12. Further, a connecting surface 214 is provided on one side of the connecting segment 213. The connecting surface 214 is used to connect with the external material strip. During assembly, the material strip inserts a row of first terminals 20 or a row of second terminals 30 into the insulating shell 10 together. Then, the material strip is broken at the position where it connects to the connecting segment 213 to form the connecting surface 214. The connecting surfaces 214 of the first terminal 20 and the second terminal 30 are both offset from the second stop in the vertical direction to ensure that the second stop does not interfere with the operation of breaking the material strip.

[0060] The first extension 22 and the second extension 32 are sequentially embedded between the first isolation blocks 14 and the second isolation blocks 15. The first terminal 20 and the second terminal 30 located between two adjacent first isolation blocks 14 form a group. The connecting sections 213 of the first terminal 20 and the second terminal 30 in the same group are aligned in the vertical direction, while the first extension 22 and the second extension 32 are staggered in the vertical direction, so that adjacent groups are separated by the first isolation blocks 14, and the first extension 22 and the second extension 32 in the same group are separated by the second isolation blocks 15. The extension section 144 is located between the second insertion parts 31 of two adjacent groups, and the upper end face of the extension section 144 is above the upper side of the second insertion part 31. Thus, by setting the extension section 144, the creepage distance between the two adjacent groups of second insertion parts 31 is increased. Moreover, since the extension section 144 extends upward to the top of the second insertion part 31, the extension section 144 can extend the anti-creep area of ​​the first isolation block 14 in the vertical direction, thereby meeting the transmission requirements of higher voltage signals or currents. The second isolation block 15 is located between the first extension 22 and the second extension 32 in the same group. The first blocking segment 141, the second blocking segment 142, and the third blocking segment 143 of the first isolation block 14 block the space between the two adjacent groups of the first extension 22 and the second extension 32. The rear side of the boss 13, together with the adjacent first isolation block 14 and the second isolation block 15, forms an embedding groove 132. The first extension 22 and the second extension 32 are alternately embedded in each embedding groove 132, thereby ensuring that the first isolation block 14 and the second isolation block 15 can effectively increase the creepage distance of the lower side, the rear side, and the upper side of the boss 13, preventing the current from breaking down and conducting between the first extension 22 and the second extension 32 along the lower side, the rear side, and the upper side of the boss 13, so as to meet the transmission requirements of higher voltage signals or currents.

[0061] The rear side of the insulating shell 10 is also provided with a plurality of alignment blocks 16. The alignment blocks 16 are elongated strips extending in the vertical direction and are distributed on the left and right sides of each first terminal hole 11. Each alignment block 16 and the extension section 144 of each first isolation block 14 are aligned with each other in the vertical direction. The alignment blocks 16 are used to increase the creepage distance between the connection points of two adjacent sets of first insertion parts 21 and first extension parts 22 to avoid breakdown and conduction between two adjacent sets of first insertion parts 21. Specifically, the alignment blocks 16 are located between the connecting sections 213 of the first insertion parts 21. In this embodiment, the two sides of the alignment blocks 16 are inclined, and the distance between the two sides of the alignment blocks 16 gradually decreases from the insulating shell 10 away from the insulating shell 10, so that the inclined sides of the alignment blocks 16 can guide the first terminal 20 when it is inserted into the first terminal hole 11. Specifically, the two sides of the alignment block 16 are used to guide the connecting section 213 of the first terminal 20; the guide surfaces 145 on both sides of the extension section 144 are used to guide the connecting section 213 of the second terminal 30.

[0062] In summary, this utility model provides an electrical connector 1, which has the following advantages compared with the prior art:

[0063] 1. The first isolation block 14 and the second isolation block 15 extend rearward from the rear side of the boss 13 and protrude to the upper and lower sides of the boss 13. The top surfaces of the first isolation block 14 and the second isolation block 15 are higher than the upper side of the boss 13, and the bottom surfaces of the first isolation block 14 and the second isolation block 15 are lower than the lower side of the boss 13. This means that when the current between the first terminal 20 and the second terminal 30 creeps along the upper and lower sides of the boss 13, it needs to cross the first isolation block 14 or the second isolation block 15, which increases the creepage distance between the first terminal 20 and the second terminal 30. This avoids direct breakdown discharge between the first terminal 20 and the second terminal 30, eliminates safety hazards, and the addition of the first isolation block 14 and the second isolation block 15 can meet the transmission requirements of higher voltage signals or currents. Furthermore, the first isolation block 14 also includes an extension section 144 extending upward beyond the top wall of the second terminal hole 12. The first terminal 20 and the second terminal 30 located between two adjacent first isolation blocks 14 form a group. The extension section 144 is located between two adjacent groups of second insertion portions 31, and the upper end face of the extension section 144 is located above the upper side of the second insertion portion 31. The extension section 144 can effectively increase the creepage distance between two adjacent groups of second insertion portions 31, thereby increasing the creepage distance between the first terminal 20 and the second terminal 30 between the first isolation block 14 and the second isolation block 15. Moreover, the extension section 144 can also increase the effective area for blocking creepage in the vertical direction between the two groups of second insertion portions 31, thereby meeting the transmission requirements of higher voltage signals or currents.

[0064] 2. The first blocking section 141 protruding below the boss 13, the second blocking section 142 protruding behind the boss 13, the third blocking section 143 protruding above the boss 13, and the extension section 144 extending upward to the insulating shell 10 are connected in sequence to realize the multi-angle support and reinforcement of the boss 13 by the first isolation block 14, improve the load-bearing strength of the boss 13, prevent the boss 13 from being deformed by impact, and thus improve the stability of the support and positioning of the first terminal 20 and the second terminal 30.

[0065] 3. An inclined bracing surface 131 is provided below the boss 13 to improve the load-bearing strength of the boss 13 in the vertical direction, prevent the boss 13 from being deformed by impact, and improve the stability of supporting and positioning the first terminal 20 and the second terminal 30. The front end of the first blocking section 141 extends to the bracing surface 131, which can strengthen the strength of the bracing surface 131. In turn, by increasing the strength of the bracing surface 131, the load-bearing strength of the boss 13 is further enhanced, thereby improving the stability of supporting and positioning the first terminal 20 and the second terminal 30.

[0066] 4. At least one side of the first blocking segment 141 is inclined in the left-right direction, and the width of the first blocking segment 141 in the left-right direction gradually increases from bottom to top. At least one side of the third blocking segment 143 in the left-right direction is also inclined, and the width of the third blocking segment 143 in the left-right direction gradually increases from top to bottom. Compared with the structure with a vertical orientation, the inclined side structure can further improve the creepage distance of the first blocking segment 141 and the third blocking segment 143 in the left-right direction, further avoid breakdown discharge between the first terminal 20 and the second terminal 30, and meet the transmission requirements of higher voltage signals or currents.

[0067] 5. Inclined guide surfaces S are provided on both the left and right sides of the first isolation block 14 and the second isolation block 15. Guide surfaces 145 are provided on both sides of the extension section 144 in the left and right directions. The inclined guide surfaces S and guide surfaces 145 also increase the creepage distance of the first isolation block 14 and the second isolation block 15 in the left and right directions, thereby avoiding breakdown discharge between the first terminal 20 and the second terminal 30 and meeting the transmission requirements of higher voltage signals or currents. Furthermore, the inclined guide surfaces S can guide the first extension 22 or the second extension 32 to be embedded between adjacent first isolation blocks 14 and second isolation blocks 15. The guide surfaces 145 can guide the second terminal 30 to be inserted into the second terminal hole 12, thereby improving the assembly efficiency of installing the first terminal 20 and the second terminal 30 into the insulating shell 10, avoiding the first terminal 20 and the second terminal 30 from scraping the insulating shell 10 and generating debris during the installation process, which would lead to poor connection. This improves assembly efficiency while ensuring a high yield rate.

[0068] 6. The angle between the side of the first blocking section 141 and the lower side of the boss 13 is equal to the angle between the side of the third blocking section 143 and the upper side of the boss 13, ensuring a more uniform electric field intensity distribution at the upper and lower sides of the boss 13, reducing the risk of local breakdown, and further meeting the transmission requirements of higher voltage signals or currents.

[0069] 7. The angle between the guide surface S and the rear side of the boss 13 is smaller than the angle between the side of the first blocking section 141 and the lower side of the boss 13. The angle between the guide surface 145 and the rear side of the insulating shell 10 is smaller than the angle between the side of the third blocking section 143 and the upper side of the boss 13. That is, the guide surface S and the guide surface 145 with smaller tilt angles have a gentler tilt posture, which makes it more effective to guide the first terminal 20 and the second terminal 30 into the insulating shell 10, and further improves the assembly efficiency.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementations of this utility model, 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 utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrical connector, characterized in that, include: An insulating shell has a row of spaced-apart first terminal holes and a row of spaced-apart second terminal holes in a left-right direction. Each second terminal hole is located below each first terminal hole. A boss protrudes rearward from below the row of second terminal holes on the rear side of the insulating shell. The boss has multiple first isolation blocks and multiple second isolation blocks. The multiple first isolation blocks are arranged on the left and right sides of each second terminal hole, and the multiple second isolation blocks are arranged between two adjacent first isolation blocks. The first isolation blocks and second isolation blocks are arranged alternately on the boss. The first isolation blocks and second isolation blocks extend rearward from the rear side of the boss and protrude to the upper and lower sides of the boss. The top surfaces of the first isolation blocks and second isolation blocks are higher than the upper side of the boss, and the bottom surfaces of the first isolation blocks and second isolation blocks are lower than the lower side of the boss. The first isolation block also includes an extension section extending upward beyond the top wall of the second terminal hole. A plurality of first terminals are mounted on the insulating shell. Each first terminal includes a first insertion portion inserted into the first terminal hole, a first extension portion protruding rearward from the first insertion portion into the first terminal hole, and a first conductive portion extending from the first extension portion. A plurality of second terminals are mounted on the insulating shell. Each second terminal includes a second insertion portion inserted into a second terminal hole, a second extension portion protruding rearward from the second insertion portion into the second terminal hole, and a second conductive portion extending from the second extension portion. The first extension and the second extension sequentially enter between each of the first isolation blocks and the second isolation blocks. The first terminal and the second terminal located between two adjacent first isolation blocks form a group. The extension section is located between two adjacent groups of second insertion parts. The second isolation block is located between the first extension and the second extension in the same group.

2. The electrical connector according to claim 1, characterized in that, The first isolation block includes a first blocking segment protruding below the boss, a second blocking segment protruding behind the boss, and a third blocking segment protruding above the boss; the first blocking segment, the second blocking segment, the third blocking segment and the extension segment are connected in sequence, and the first blocking segment, the second blocking segment and the third blocking segment block between the first extension and the second extension of two adjacent groups.

3. The electrical connector according to claim 2, characterized in that, A sloping support surface is provided below the boss. The sloping support surface extends from back to front at an angle that gradually moves away from the upper surface of the boss. The front end of the first blocking section extends to connect with the sloping support surface.

4. The electrical connector according to claim 2, characterized in that, The first blocking segment is inclined on at least one side in the left-right direction, and the width of the first blocking segment in the left-right direction gradually increases from bottom to top; the third blocking segment is inclined on at least one side in the left-right direction, and the width of the third blocking segment in the left-right direction gradually increases from top to bottom.

5. The electrical connector according to claim 1, characterized in that, The first isolation block and the second isolation block are provided with inclined guide surfaces on both the left and right sides. The guide surfaces are used to guide the first extension and the second extension into the space between the adjacent first isolation block and the second isolation block. The extension section is provided with inclined guide surfaces on both sides in the left and right direction. The guide surfaces are used to guide the connection between the second insertion part and the second extension.

6. The electrical connector according to claim 4, characterized in that, The angle between the side of the first blocking segment and the lower side of the boss is equal to the angle between the side of the third blocking segment and the upper side of the boss.

7. The electrical connector according to claim 1, characterized in that, The second isolation block includes a lower protruding section protruding below the boss, a rear protruding section protruding behind the boss, and an upper protruding section protruding above the boss; the lower protruding section, the rear protruding section, and the upper protruding section are connected in sequence.

8. The electrical connector according to claim 7, characterized in that, The lower convex segment is inclined on at least one side in the left-right direction, and the width of the lower convex segment gradually increases from bottom to top in the left-right direction; the upper convex segment is inclined on at least one side in the left-right direction, and the width of the upper convex segment gradually increases from top to bottom in the left-right direction. Wherein, the angle between the side surface of the lower convex section and the lower side surface of the boss is equal to the angle between the side surface of the upper convex section and the upper side surface of the boss.

9. The electrical connector according to claim 1, characterized in that, Both the first insertion part and the second insertion part are provided with a contact section, a fixing section and a connecting section from front to back. The width of the connecting section is greater than the width of the contact section. A connecting surface is provided on one side of the connecting section. The connecting surfaces of the first terminal and the second terminal are both offset from the second stop in the vertical direction. The connecting sections of the first terminal and the second terminal in the same group are aligned in the vertical direction, while the first extension part and the second extension part are staggered in the vertical direction.

10. The electrical connector according to claim 1, characterized in that, The rear side of the insulating shell is also provided with a plurality of alignment blocks distributed on the left and right sides of each first terminal hole, and the alignment blocks and the extensions of each first isolation block are aligned with each other in the vertical direction.

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