Single core straight tip electrical connector

Abstract

The application discloses a single-core straight-head electric connector, wherein a plug shell is integrally formed with a socket as a core and is provided with a linear channel which is perpendicular to the central axis of the socket; the plug is provided with a anti-falling buckle mechanism which partially penetrates the socket and the plug shell; the anti-falling buckle mechanism is composed of a buckle, a plug lock buckle, a spring and a baffle; the middle part of the plug lock buckle is provided as a column body which is movably connected to the linear channel; one end of the column body is connected to the buckle and has a movable stroke in the plug shell; the other end of the column body is provided with a counterbore for connecting the spring; the other end of the spring abuts against the baffle; and the baffle is fixedly connected to the surface of the plug shell which is opposite to the surface of the plug shell where the buckle is located. The electric connector structure can greatly improve the stability of the electric connector and the overall service life, and has the advantages of easy disassembly and maintenance of the anti-falling buckle mechanism, convenient plug and pull operation of the connector and the like.

Description

Technical Field

[0001] This invention relates to a connector structure, and more particularly to an electrical connector structure that is easy to assemble and reliably prevents accidental disconnection, belonging to the field of electrical connector technology. Background Technology

[0002] With breakthroughs in electronic application technology and various home appliance and transportation manufacturing industries, the use of electrical connectors to transmit high-power currents has become the preferred method in finished product design. This is to ensure that when equipment malfunctions, the damaged parts can be quickly identified, repaired, or replaced, thereby extending the product's lifespan.

[0003] These high-voltage connectors typically consist of a socket and a plug. Besides using an interference fit to maintain connection strength and signal stability, some designs also employ external locking mechanisms to secure their relative positions. However, these external functional accessories are complex in structure and occupy a large volume, making them unsuitable for use with miniature connectors.

[0004] In practical applications of existing single-core straight connectors, the locking mechanism is usually only connected to the outer shell and not to the core electrically connected socket. This results in the functional separation of the locking mechanism from the pins and sockets during the mating process, and the actual strength after mating cannot meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a single-core straight-head electrical connector so that the connector can be reliably locked after mating, preventing accidental disconnection.

[0006] The technical solution of the present invention to achieve the above-mentioned objective is a single-core straight-head electrical connector, comprising a socket and a plug. The socket is provided with a single-core pin and a socket housing for the pin to pass through and be positioned therein. The plug is provided with a plug housing and a cylindrical socket for connecting the pin and cable. The plug housing is integrally molded with the socket as the core, and has a linear channel orthogonal to the central axis of the socket. The plug is provided with an anti-disengagement snap mechanism that partially penetrates the socket and the plug housing. The anti-disengagement snap mechanism consists of a snap, a plug locking latch, a spring, and a baffle. The middle part of the plug locking latch is provided with a column that can move through the linear channel. One end of the column is connected to the snap and has a movable stroke in the plug housing. The other end of the column has a countersunk hole for mounting the spring, and extends towards the socket docking end with a barbed spring arm for locking and positioning against the socket housing. The other end of the spring abuts against the baffle, and the baffle is locked and fixed to the other side surface of the plug housing opposite to the snap.

[0007] Furthermore, the plug lock buckle has an adjustable opening width and an outward protrusion at one end of the column, and the bottom side of the snap fastener has a windowed mounting cavity. The snap fastener is sleeved on the top of the plug lock buckle and is positioned by the protrusion and the window.

[0008] Furthermore, the plug housing has a first open cavity at the snap-fit ​​point at one end of the linear channel, and the difference between the depth of the first open cavity and the height of the snap is greater than the disengagement range of the barbed spring arm.

[0009] Furthermore, the plug lock buckle extends outward at the other end of the column to form a base, and the plug shell has a second open cavity integrally formed with the linear channel. The plug lock buckle enters the linear channel from the second open cavity and is limited inward by the base. The baffle encloses the second open cavity and leaves a travel space between it and the end face of the base that is greater than the hook spring arm's disengagement range.

[0010] Furthermore, the barbed spring arm extends laterally from the base and has one or more reinforcing ribs connected to the base formed on the surface opposite to the barb.

[0011] Furthermore, the second open cavity is provided with a positioning groove and a toothed locking platform on a set of opposite side walls. The baffle is formed with a positioning tongue corresponding to the positioning groove and a spring buckle corresponding to the locking platform. The second open cavity and the baffle are also provided with a limiting assembly to prevent displacement and disengagement between them.

[0012] Furthermore, heat dissipation fins that increase the surface area are formed on both sides of the plug housing, and a tail sleeve that completely covers the socket is threaded onto the side of the plug housing facing away from the socket.

[0013] Furthermore, the plug housing has a multi-toothed rubber ring fitted around the outer periphery of the mating portion that is compatible with the socket housing.

[0014] Furthermore, the inner cavity of the socket housing is formed with a segmented open snap ring portion, and the middle section of the pin is provided with a conical positioning portion. The outer diameter of the positioning portion increases and then decreases sharply in the direction away from the pin's contact end. The pin passes through the positioning portion and is positioned on the socket housing by the snap ring portion.

[0015] Furthermore, the socket housing has a chamfered limiting rib with an increased outer diameter on the outer periphery of the mating port facing the plug. When the plug and socket are mated, the barbed spring arm is engaged and fixed with the chamfered limiting rib.

[0016] The optimized electrical connector structure of this invention has significant advantages: by integrally molding the socket and plug housing and combining them with an anti-disengagement snap mechanism, controllable snap-fit ​​towards the socket housing can be achieved, which greatly improves the docking stability and overall service life of the electrical connector. It also has the advantages of easy disassembly and maintenance of the anti-disengagement snap mechanism and convenient connector insertion and removal operations. Attached Figure Description

[0017] Figure 1 This is a three-dimensional appearance diagram of the single-core straight-head electrical connector of the present invention in its separated state.

[0018] Figure 2 yes Figure 1 The diagram shows the exploded structure of the electrical connector.

[0019] Figure 3 yes Figure 2 A partial structural schematic diagram of the electrical connector shown from another perspective.

[0020] Figure 4 yes Figure 3 A detailed structural diagram from a different perspective.

[0021] Figure 5 yes Figure 1 The diagram shows a sectional view of the separate shaft of the electrical connector socket. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master, and thus to make a clearer definition of the scope of protection of the present invention.

[0023] To ensure reliable locking of the connector after mating, and to prevent accidental tripping without relying on electrically connected pins and sockets. For example... Figures 1 to 5 As shown, the single-core straight connector of the present invention includes two conventional parts: a socket 1 and a plug 2. The socket 1 is provided with a single-core pin 3 and a socket housing 4 for the pin to pass through and be positioned therein, while the plug 2 is provided with a plug housing 6 and a cylindrical socket 5 for connecting the pin and cable. The structural improvement features of the electrical connector of the present invention are summarized as follows: the plug housing 6 is integrally molded with the socket 5 as the core and has a linear channel 61 orthogonal to the central axis of the socket; the plug 1 is provided with an anti-disengagement snap mechanism that partially penetrates the socket 5 and the plug housing 6. The anti-disengagement snap mechanism consists of a snap 81, a plug locking snap 82, a spring 83 and a baffle 84, wherein the plug locking snap 82 is the main component of the mechanism, the middle part of which is a column 821 that can be movably connected to the linear channel 61. The top of the column 821 is connected to the snap 81 and has a movable stroke in the plug housing 6, and the bottom end of the column 821 is provided with a countersunk hole (not marked, but) for mounting the spring 83. Figure 3As can be seen, a barbed spring arm 824 extends towards the mating end of the socket 5 and is positioned to engage with the socket housing 4; the other end of the spring 83 abuts against the baffle 84, which is then engaged and fixed to the other side surface of the plug housing 6 opposite to the snap fastener. Based on the positioning baffle, the column, through the spring's restoring tension, possesses mobility within a certain stroke length in the linear channel, thereby causing the barbed spring arm to have a corresponding axial displacement stroke.

[0024] In the above-described solution, the plug shell is integrally molded with a plastic coating, using the socket as the inner core. This eliminates the need for interference fit assembly of the socket and allows for the integration of two components made of different materials, effectively improving the structural strength of the finished product. As shown in the diagram, the socket 5 also has a through hole 51 orthogonal to its own axis, serving as the basis for the linear channel 61 formed after plastic coating. The plug shell 6 provides an inside-out wrapping effect on the socket 5, ensuring that the anti-disengagement snap mechanism, although inserted into the socket, does not directly contact it, avoiding metal friction noise and post wear, and also providing the connector plug with waterproof insulation. Furthermore, the snap mechanism overcomes the spring force of the spring by transmitting force to the upright and the barbed spring arm, allowing the barbed spring arm to disengage from the locking structure of the socket shell, enabling the connector to be pulled out. When the connector is mated, the barbed spring arm returns to its original position under spring force, locking it in place and preventing the plug from axially retracting. Here, the barbed spring arm is sloped towards the mating side so that when the connector is mated, it can automatically overcome the spring force, maintain sliding with the socket housing, and pass the snap-fit ​​position to achieve anti-disengagement.

[0025] Looking at the structural features in more detail: the aforementioned plug lock buckle 82 has a mounting portion 822 with an adjustable opening and an outward protrusion at one end (top) of the column. The bottom side of the snap button 81 has a mounting cavity 811 with a window, and the snap button 81 is sleeved on the top of the plug lock buckle 82 and is positioned by the protrusion engaging with the window. Here, the protrusion and window are designed as a conventional inverted snap structure, allowing the snap button to be flexibly disassembled and replaced by pressing the protrusion through the window.

[0026] The plug housing 6 has a first open cavity 62 at the snap-fit ​​location at one end of the linear channel, and the difference between the depth of the first open cavity 62 and the height of the snap 8 is greater than the disengagement amplitude d2 of the barbed spring arm (e.g., Figure 4 As shown). Figure 3 and Figure 4From another perspective, the plug lock buckle 82 extends outward at the other end (bottom) of the column to form a base 823. The plug housing 6 has a second open cavity 63 integrally formed with the linear channel. The plug lock buckle 82 enters the linear channel 61 from the second open cavity 63 and is limited inward by the base 823. The second open cavity 63 is enclosed by the baffle 84, and a travel space d1 greater than the hook spring arm disengagement range is left between the baffle 84 and the base end face. As shown in the figure, d1 > d2.

[0027] More specifically, the barbed spring arm 824 extends laterally from the base 823, and has one or more reinforcing ribs 825 formed on the surface facing away from the barb, connecting to the base. These ribs are mainly used to strengthen the snap-fit ​​strength of the barbed spring arm relative to the socket housing, preventing easy loosening. As a necessary basic structure for the baffle to enclose the second open cavity, the second open cavity 63 has a positioning groove 631 and a toothed locking platform 632 on a set of opposing side walls. The baffle 84 has a positioning tongue 841 corresponding to the positioning groove and a spring buckle 842 corresponding to the locking platform. The second open cavity 63 and the baffle 84 are also provided with a limiting assembly A to prevent displacement and disengagement between them. During actual connector assembly, the plug locking latch is first inserted into the linear channel and pushed upwards until its travel is blocked. Then, the snap 81 is pressed onto the mounting part 822. Next, a spring (partially exposed) is inserted into the countersunk hole. Finally, the baffle is sealed to complete the assembly of the entire anti-disengagement snap mechanism. When installing the baffle, the positioning tongue is pre-loaded into the positioning groove. Then, using the positioning tongue as an axis, the spring snap 842 is gradually moved closer to the locking platform 632 and engaged with it. Here, the limiting assembly is used to prevent lateral displacement between the baffle and the second open cavity, which would cause the spring snap to disengage from the locking platform. Only when the baffle needs to be removed can the limiting assembly be separated by actively prying the spring snap away from the locking platform, and then the baffle can be removed.

[0028] In addition, heat dissipation fins 64 are formed on both sides of the plug housing 6 to increase the surface area. From the tail end, the plug housing 6 has an external thread 65 on the side facing away from the socket, which allows for the detachable attachment of a tail sleeve 7 that completely covers the socket. From the head end, the plug housing 6 has a multi-toothed rubber ring 91 fitted around the outer periphery of the mating part that fits into the socket housing 4, in order to achieve a seal and isolate the signal transmission part from the external environment.

[0029] In addition to the structural optimization of the plug portion mentioned above, the corresponding socket in this invention has also been adapted and improved. Firstly, as... Figure 2As shown, to cooperate with the snap-fit ​​action of the barbed spring arm in the plug, the outer periphery of the socket housing facing the plug's mating port is provided with a chamfered limiting rib 41. The outer diameter gradually increases from the end face to the root side and then drops sharply to return to a straight cylindrical shape when it reaches approximately the disengagement range. Thus, when the barbed spring arm slides and passes this steep drop position (i.e., the aforementioned snap-fit ​​position), the barbed spring arm returns to its original position due to the released elastic force, and the barbed spring arm and the limiting rib interlock, preventing the plug from being easily pulled out.

[0030] Furthermore, to ensure the convenience and reliability of the interference fit assembly of the pins, the inner cavity of the socket housing 4 is formed with a segmented open spring portion 42 (e.g., Figure 1 and Figure 5 As shown), the middle section of the pin 3 has a conical positioning part 31. The outer diameter of the positioning part 31 increases and then returns to its original position in the direction away from the pin's contact end. The pin 3 is then positioned in the socket housing 4 by passing through the positioning part 31 and the retaining spring part 42, maintaining relative stillness despite high-strength pulling force. At the same time, in order to ensure the safety of the socket and the stability of the socket housing installation, an insulating cap 92 for preventing electric shock is also snapped into the end of the pin 3. A square rubber pad 93 is also fitted on the inner side of the socket housing. The mushroom head 931 of the rubber pad expands and passes through the through hole 43 of the socket housing to achieve positioning and axial alignment with the surrounding socket mounting holes.

[0031] As can be seen from the above description of the optimized electrical connector structure of the present invention and the detailed description of the embodiments in conjunction with the illustrations, it has outstanding substantive features and significant progress: by integrally molding the socket and the plug housing and combining them with the anti-disengagement snap mechanism, controllable snap-fit ​​towards the socket housing can be achieved, which greatly improves the docking stability and overall service life of the electrical connector, and has the advantages of easy disassembly and maintenance of the anti-disengagement snap mechanism and convenient connector plugging and unplugging operation.

[0032] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A single-core straight-head electrical connector, comprising a socket and a plug, wherein the socket has a single-core pin and a socket housing for the pin to pass through and be positioned therein, and the plug has a plug housing and a cylindrical socket for mating the pin and cable, characterized in that: The plug housing is integrally molded with the socket as the core and has a linear channel orthogonal to the central axis of the socket. The plug is equipped with an anti-disengagement snap mechanism that partially penetrates the socket and the plug housing. The anti-disengagement snap mechanism consists of a snap, a plug locking buckle, a spring, and a baffle. The middle part of the plug locking buckle is a column that can be movably inserted into the linear channel. One end of the column is connected to the snap and has a movable stroke in the plug housing. The other end of the column has a countersunk hole for mounting the spring and extends towards the socket docking end to face the socket housing for locking and positioning. The other end of the spring abuts against the baffle, and the baffle is locked and fixed to the other side surface of the plug housing opposite to the snap. The socket housing has a chamfered limiting rib with an increased outer diameter on the outer periphery of the docking port facing the plug. When the plug and socket are docked, the chamfered limiting rib is locked and fixed.

2. The single-core straight-head electrical connector according to claim 1, characterized in that: The plug lock buckle has an adjustable opening and an outward protrusion at one end of the column. The bottom side of the snap fastener has a windowed mounting cavity. The snap fastener is sleeved on the top of the plug lock buckle and is positioned by the protrusion and the window.

3. The single-core straight-head electrical connector according to claim 1, characterized in that: The plug housing has a first open cavity at the snap-fit ​​point at one end of the linear channel, and the difference between the depth of the first open cavity and the height of the snap is greater than the disengagement range of the barbed spring arm.

4. The single-core straight-head electrical connector according to claim 1, characterized in that: The plug lock buckle extends outward at the other end of the column to form a base. The plug shell has a second open cavity integrally formed with the linear channel. The plug lock buckle enters the linear channel from the second open cavity and is limited inward by the base. The baffle encloses the second open cavity and leaves a travel space between it and the end face of the base that is greater than the hook spring arm's disengagement range.

5. The single-core straight-head electrical connector according to claim 4, characterized in that: The barbed spring arm extends from the base and is formed with one or more reinforcing ribs connected to the base on the surface opposite to the barb.

6. The single-core straight-head electrical connector according to claim 4, characterized in that: The second open cavity has a positioning groove and a toothed locking platform on a set of opposite side walls. The baffle has a positioning tongue corresponding to the positioning groove and a spring buckle corresponding to the locking platform. The second open cavity and the baffle are also provided with a limiting assembly to prevent displacement and disengagement between them.

7. The single-core straight-head electrical connector according to claim 1, characterized in that: The plug housing has heat dissipation fins formed on both sides to increase the surface area, and a tail sleeve that completely covers the socket is threaded onto the side of the plug housing facing away from the socket.

8. The single-core straight-head electrical connector according to claim 1, characterized in that: The plug housing has a multi-toothed rubber ring fitted around the outer periphery of the mating portion that is compatible with the socket housing.

9. The single-core straight-head electrical connector according to claim 1, characterized in that: The inner cavity of the socket housing is formed with a segmented open retaining spring portion, and the middle section of the pin is provided with a conical positioning portion. The outer diameter of the positioning portion increases and then decreases sharply in the direction away from the pin's contact end. The pin passes through the positioning portion and is mounted and positioned on the socket housing via the retaining spring portion.

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