A four-core shielded crystal head
Patent Information
- Application Number
- CN202521975717.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-15
AI Technical Summary
[0002]水晶头是网络连接中重要的接口设备，是一种能沿固定方向插入并自动防止脱落的塑料接头，用于网络通讯，因其外观像水晶一样晶莹透亮而得名为水晶头，而四芯以太网水晶头主要应用于实时工业以太网通讯传输，配合四芯工业以太网电缆使用，现有水晶头的组装工艺通常采用“金属导电片预插-线缆后穿”的流程：即先将多根金属导电片分别压入本体的槽孔内，使金属导电片的底端外露于本体，金属导电片的接触端（用于与线芯导通的部分）则延伸至本体内，随后将剥离绝缘层的线缆线芯逐一穿入对应的线缆插孔，直至线芯前端与金属导电片接触端抵接，最终通过压接工具将金属导电片与线芯压紧固定，然而，金属导电片在预插入时容易凸起在线缆插孔内，即当线缆的线芯穿入对应插孔时，凸起的金属导电片接触端会对线芯产生物理阻挡，强行推动线芯可能造成金属导电片接触端过度形变、断裂等异常，从而影响水晶头的组装质量与生产效率
[0012]与现有技术相比，本申请提供的一种四芯的屏蔽型水晶头，其结构布局紧凑且组装快捷，在单个线孔内有间隙槽位，当线缆的线芯穿入时，可直接沿无阻挡的轴心方向推进，避免因金属导电片的接触端凸起而对线缆有干涉，显著降低组装所需的推力，可避免线芯与金属导电片接触端的硬性摩擦导致的金属导电片的接触端出现变形或断裂等异常，保证部件的使用寿命。
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Figure CN224842542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of network crystal head connection technology, specifically a four-pin shielded crystal head. Background Technology
[0002] RJ45 connectors are important interface devices in network connections. They are plastic connectors that can be inserted in a fixed direction and automatically prevent them from falling out. Used for network communication, they are named RJ45 connectors because of their crystal-clear appearance. Four-core Ethernet RJ45 connectors are mainly used for real-time industrial Ethernet communication transmission, in conjunction with four-core industrial Ethernet cables. The current assembly process of RJ45 connectors typically uses a "pre-insertion of metal conductive pieces - cable insertion" process: multiple metal conductive pieces are first pressed into the slots of the connector body, with the bottom ends of the metal conductive pieces exposed. The contact ends of the metal conductive pieces (used for...) The part that is connected to the wire core extends into the body. Then, the wire cores with the insulation stripped are inserted one by one into the corresponding cable sockets until the front end of the wire core contacts the metal conductive plate. Finally, the metal conductive plate and the wire core are pressed and fixed by a crimping tool. However, the metal conductive plate is prone to protruding in the cable socket when it is pre-inserted. That is, when the wire core of the cable is inserted into the corresponding socket, the protruding contact end of the metal conductive plate will physically block the wire core. Forcibly pushing the wire core may cause excessive deformation or breakage of the contact end of the metal conductive plate, thus affecting the assembly quality and production efficiency of the crystal head. Utility Model Content
[0003] The purpose of this invention is to provide a four-pin shielded crystal head to solve the technical problems in the background art.
[0004] To achieve the aforementioned objectives, this utility model provides the following technical solution:
[0005] A four-core shielded crystal head includes a crystal head body with a cavity structure for cable insertion. Four slots for placing metal conductive plates are located at the lower front end of the crystal head body: a first slot, a second slot, a third slot, and a fourth slot. Each slot has a corresponding cable hole above it, and the slot and cable hole are interconnected. The four cable holes are designated as the first, second, third, and fourth cable holes. The first, second, third, and fourth cable holes have identical structures. The first, second, and third cable holes are to the left of the fourth cable hole, and the first and third cable holes are above the second cable hole. The axis of the second cable hole is collinear with the center of the line connecting the axes of the first and third cable holes. The first, second, and third cable holes are interconnected. The first cable hole includes a circular main cavity with a gap groove below it. The distance between the outer diameter of the main cavity and the bottom end of the gap groove is 0.05 mm.
[0006] A metal shielding shell is also snapped onto the outside of the crystal head body. The left and right sidewalls of the crystal head body have recessed mounting grooves for placing the metal shielding shell. An elastic opening is provided in the mounting groove near the fourth wire hole. The elastic opening is connected to the inner cavity of the crystal head. The elastic opening is a horizontally arranged elongated structure.
[0007] The metal shielding shell includes a main shell and a tail clip connected to the rear end of the main shell. At least two first locking feet are provided on the upper part of the main shell, and a corresponding recessed first locking hole is provided on the upper part of the crystal head body to engage with the first locking feet.
[0008] The metal conductive pieces placed in the first slot, second slot, third slot and fourth slot are respectively a first conductive insert, a second conductive insert, a third conductive insert and a fourth conductive insert. The first conductive insert and the third conductive insert have the same structure. The second conductive insert and the fourth conductive insert have the same structure. The height of the first conductive insert is greater than the height of the second conductive insert. The second conductive insert includes a first support block and three pins connected above the first support block. The three pins are respectively a first pin, a second pin and a third pin. The first pin and the third pin have the same structure and are symmetrical at the left and right ends of the second pin.
[0009] The first pin has a first piercing tip at its top, the second pin has a second piercing tip at its top, and the third pin has a third piercing tip at its top. The first piercing tip and the third piercing tip are on the same plane, while the second piercing tip and the first piercing tip are not on the same plane.
[0010] The top of the first pin has a first inclined surface that slopes upward from bottom to top on the side away from the second pin, and the outer end face of the first pin away from the second pin has a concave first arc surface, which is below the first inclined surface.
[0011] The first conductive insert includes a second support block, a connecting block, and three pins. The connecting block is above the second support block. The three pins are a fourth pin, a fifth pin, and a sixth pin. The three pins are connected above the connecting block. The fourth pin, the fifth pin, and the sixth pin have the same structure as the first pin, the second pin, and the third pin on the second conductive insert, respectively. The connecting block has locking blocks protruding outward on both sides.
[0012] Compared with the prior art, the four-core shielded crystal head provided in this application has a compact structure and quick assembly. There is a gap slot in each wire hole, which allows the wire core to be pushed directly along the unobstructed axial direction when it is inserted. This avoids interference with the cable due to the protrusion of the contact end of the metal conductive plate, significantly reduces the pushing force required for assembly, and avoids abnormalities such as deformation or breakage of the contact end of the metal conductive plate caused by hard friction between the wire core and the contact end of the metal conductive plate, thus ensuring the service life of the component. Attached Figure Description
[0013] Figure 1 : A three-dimensional structural schematic diagram of this application;
[0014] Figure 2 Left view of this application;
[0015] Figure 3 Top view of this application;
[0016] Figure 4 : Figure 3 AA section view;
[0017] Figure 5 : Figure 3 BB section view;
[0018] Figure 6 : Structural diagram of the first wire hole;
[0019] Figure 7 : A 3D view of the crystal head itself;
[0020] Figure 8 : Front view of the crystal head body;
[0021] Figure 9 : A diagram showing the positional relationship of the four conductive metal sheets;
[0022] Figure 10 : 3D structural diagram of the second conductive insert;
[0023] Figure 11 : Main view of the second conductive insert;
[0024] Figure 12 Top view of the second conductive insert;
[0025] Figure 13 : 3D structural diagram of the first conductive insert;
[0026] Figure 14 Top view of the first conductive insert. Detailed Implementation
[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0028] Specific Implementation Example 1: Please refer to Figures 1 to 14 In this embodiment of the application, a four-core shielded crystal head includes a crystal head body 1. The crystal head body 1 has a cavity structure 101 for cable insertion. Four slots for placing metal conductive plates are located below the front end of the crystal head body 1, namely a first slot 102, a second slot 103, a third slot 104, and a fourth slot 105. Each slot has a corresponding wire hole for placing a cable, and the wire holes all communicate with the cavity structure 101. Each slot communicates with the corresponding wire hole. The four wire holes are a first wire hole 106, a second wire hole 107, a third wire hole 108, and a fourth wire hole 109. The first wire hole 106, the second wire hole 107, the third wire hole 108, and the fourth wire hole 109... 08 and the fourth wire hole 109 have the same structure. The first wire hole 106, the second wire hole 107 and the third wire hole 108 are to the left of the fourth wire hole 109. The first wire hole 106 and the third wire hole 108 are above the second wire hole 107. The axis of the second wire hole 107 is collinear with the center of the line connecting the axes of the first wire hole 106 and the third wire hole 108. The first wire hole 106, the second wire hole 107 and the third wire hole 108 are interconnected. The first wire hole 106 includes a circular main hole cavity 106-1. There is a gap groove 106-2 below the main hole cavity 106-1. The distance D1 between the outer diameter of the main hole cavity 106-1 and the bottom end of the gap groove 106-2 is 0.05mm.
[0029] A metal shielding shell 6 is also snapped onto the outside of the crystal head body 1. The left and right side walls of the crystal head body 1 have recessed mounting grooves 110 for placing the metal shielding shell 6. An elastic opening 111 is provided in the mounting groove 110 near the fourth wire hole 109. The elastic opening 111 communicates with the inner cavity of the crystal head. The elastic opening 111 is a horizontally arranged elongated structure. The elastic opening 111 in the mounting groove 110 facilitates the installation of the metal shielding shell 6, allowing the crystal head body 1 to deform to a certain extent, making it easier to insert the metal shielding shell 6 into the crystal head body 1, effectively improving the installation efficiency of the shielding shell.
[0030] The metal shielding shell 6 includes a main shell 601 and a tail clip 602 connected to the rear end of the main shell 601. At least two first locking feet 601-1 are provided on the upper part of the main shell 601. A corresponding recessed first locking hole 112 is provided on the upper part of the crystal head body 1 to engage with the first locking feet 601-1 for installation.
[0031] The metal conductive pieces placed in the first slot 102, the second slot 103, the third slot 104, and the fourth slot 105 are respectively the first conductive insert 2, the second conductive insert 3, the third conductive insert 4, and the fourth conductive insert 5. The first conductive insert 2 and the third conductive insert 4 have the same structure, and the second conductive insert 3 and the fourth conductive insert 5 have the same structure. The height of the first conductive insert 2 is greater than the height of the second conductive insert 3. The second conductive insert 3 includes a first support block 301 and three pins connected above the first support block 301. The three pins are respectively the first pin 302, the second pin 303, and the third pin 304. The first pin 302 and the third pin 304 have the same structure and are symmetrical at the left and right ends of the second pin 303.
[0032] The first pin 302 has a first piercing tip 302-1 at its top, the second pin 303 has a second piercing tip 303-1 at its top, and the third pin 304 has a third piercing tip 304-1 at its top. The first piercing tip 302-1 and the third piercing tip 304-1 are on the same plane, while the second piercing tip 303-1 is not on the same plane as the first piercing tip 302-1. That is, there is an angle between the planes where the first piercing tip 302-1 and the second piercing tip 303-1 are located. The pin layout in this application allows for a larger contact area between the metal conductive sheet and the cable, ensuring a stable connection between the metal conductive sheet and the cable.
[0033] In this application, the top of the first pin 302, away from the side of the second pin 303, has a first inclined surface 302-2 that slopes upwards. A first piercing tip 302-1 is above the first inclined surface 302-2. The outer end face of the first pin 302, away from the second pin 303, has a concave first arc surface 302-3. The first arc surface 302-3 is below the first inclined surface 302-2. A limiting tip is formed at the connection between the first arc surface 302-3 and the first inclined surface 302-2. 2. When the first pin 302 is plugged into the cable, the first piercing tip 302-1 at the top of the first pin 302 is inserted into the wire core. The first pin 302 can be better inserted into the cable along the first inclined surface 302-2 and the damage to the wire core can be reduced. In addition, after the limiting tip is inserted into the cable, since its lower part is a concave arc surface structure, the limiting tip is on the outside of the first arc surface 302-3, that is, the limiting tip can prevent the pin from falling back out of the cable and ensure that the connection between the pin and the cable is stable.
[0034] The first conductive insert 2 includes a second support block 201, a connecting block 202, and three pins. The connecting block 202 is above the second support block 201. The three pins are the fourth pin 203, the fifth pin 204, and the sixth pin 205, which are connected above the connecting block 202. The fourth pin 203, the fifth pin 204, and the sixth pin 205 have the same structure as the first pin 302, the second pin 303, and the third pin 304 on the second conductive insert, respectively, so they will not be described again. The left and right sides of the connecting block 202 have outward protruding locking blocks 202-1. Since the height of the first conductive insert 2 is greater than that of the second conductive insert 3, the locking block 202-1 structure allows the first conductive insert 2 to be snapped into the crystal head body 1, ensuring that the metal conductive insert can be stably connected to the cable.
[0035] Compared with the prior art, the four-core shielded crystal head provided in this application has a compact structure and quick assembly. There is a gap slot in each wire hole, which allows the wire core to be pushed directly along the unobstructed axial direction when it is inserted. This avoids interference with the cable due to the protrusion of the contact end of the metal conductive plate, significantly reduces the pushing force required for assembly, and avoids abnormalities such as deformation or breakage of the contact end of the metal conductive plate caused by hard friction between the wire core and the contact end of the metal conductive plate, thus ensuring the service life of the component.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the foregoing exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A four-pin shielded crystal head, characterized in that: The device includes a crystal head body, which has a cavity structure for cable insertion. At the lower front end of the crystal head body are four slots for placing metal conductive plates: a first slot, a second slot, a third slot, and a fourth slot. Each slot has a corresponding cable hole above it, and the slot and cable hole are interconnected. The four cable holes are designated as the first, second, third, and fourth cable holes. The first, second, third, and fourth cable holes have identical structures. The first, second, and third cable holes are to the left of the fourth cable hole, and the first and third cable holes are above the second cable hole. The axis of the second cable hole is collinear with the center of the line connecting the axes of the first and third cable holes. The first, second, and third cable holes are interconnected. The first cable hole includes a circular main cavity with a gap groove below it. The distance between the outer diameter of the main cavity and the bottom end of the gap groove is 0.05 mm.
2. The four-pin shielded crystal head according to claim 1, characterized in that: A metal shielding shell is also snapped onto the outside of the crystal head body. The left and right sidewalls of the crystal head body have recessed mounting grooves for placing the metal shielding shell. An elastic opening is provided in the mounting groove near the fourth wire hole. The elastic opening is connected to the inner cavity of the crystal head. The elastic opening is a horizontally arranged elongated structure.
3. A four-pin shielded crystal head according to claim 2, characterized in that: The metal shielding shell includes a main shell and a tail clip connected to the rear end of the main shell. At least two first locking feet are provided on the upper part of the main shell, and a corresponding recessed first locking hole is provided on the upper part of the crystal head body to engage with the first locking feet.
4. A four-pin shielded crystal head according to claim 3, characterized in that: The first slot, second slot, third slot, and fourth slot respectively hold metal conductive plates, which are respectively called first conductive plates, second conductive plates, third conductive plates, and fourth conductive plates. The first conductive plates and third conductive plates have the same structure, and the second conductive plates and fourth conductive plates have the same structure. The height of the first conductive plate is greater than the height of the second conductive plate. The second conductive plate includes a first support block and three pins connected above the first support block. The three pins are respectively the first pin, the second pin, and the third pin. The first pin and the third pin have the same structure and are symmetrical on the left and right ends of the second pin.
5. A four-pin shielded crystal head according to claim 4, characterized in that: The first pin has a first piercing tip at its top, the second pin has a second piercing tip at its top, and the third pin has a third piercing tip at its top. The first piercing tip and the third piercing tip are on the same plane, while the second piercing tip and the first piercing tip are not on the same plane.
6. A four-pin shielded crystal head according to claim 5, characterized in that: The top of the first pin has a first inclined surface that slopes upward from bottom to top on the side away from the second pin, and the outer end face of the first pin away from the second pin has a concave first arc surface, which is below the first inclined surface.
7. A four-pin shielded crystal head according to claim 6, characterized in that: The first conductive insert includes a second support block, a connecting block, and three pins. The connecting block is above the second support block. The three pins are a fourth pin, a fifth pin, and a sixth pin. The three pins are connected above the connecting block. The fourth pin, the fifth pin, and the sixth pin have the same structure as the first pin, the second pin, and the third pin on the second conductive insert, respectively. The connecting block has locking blocks protruding outward on both sides.