Multi-core low-voltage signal waterproof connector

Abstract

The utility model discloses a multi-core low-voltage signal waterproof connector. The multi-core low-voltage signal waterproof connector comprises a plug and a socket, the plug comprises a plug shell and a first terminal, a groove is formed in one end of the plug shell, a first convex step is arranged in the groove, and a first inner hole for accommodating the first terminal is formed in the first convex step; the socket comprises a socket shell and a second terminal, the socket shell comprises a flange plate, and a second convex step and a third convex step which are respectively arranged at two ends of the flange plate, four corners of the flange plate are respectively provided with a connecting column for installing the socket at an application end of electronic equipment in a convex manner, each connecting column is provided with a connecting hole, and a metal sleeve is arranged in each connecting hole; the second convex step is provided with a through hole for the first convex step to penetrate through, the third convex step is provided with a second inner hole for accommodating the second terminal, and the second inner hole is communicated with the through hole. According to the utility model, the mounting structure at the joint of the socket and the application end of the electronic equipment is improved, the structural strength is improved, and the electric connector is prevented from being damaged in the assembly process.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a multi-core low-voltage signal waterproof connector. Background Art

[0002] As a commonly used component in industry, electrical connectors mainly serve to achieve quick connection between electronic equipment and the application end of another electronic equipment, and to protect internal devices from harsh conditions such as dust, rain, and salt spray.

[0003] Compared with other connectors, multi-core connectors contain multiple signal lines inside, so they require more stringent waterproof and sealing performance to ensure that each signal line can work normally in a humid environment to avoid short circuits or signal interference. When designing a waterproof structure, it is also necessary to consider how to keep the connector compact.

[0004] Existing multi-core low-voltage signal waterproof connectors usually consist of a socket and a plug, and the socket is assembled at the application end of the electronic equipment. At present, in order to improve the assembly sealing and waterproofness between the socket and the plug, a waterproof ring is set between the two and locked by crimping. However, the crimping method may cause damage and cracking of the flange at the connection between the socket and the application end. In addition, during the assembly process, the operator may make a mistake in operation, causing the plug and socket of the product to loosen, affecting the assembly effect and assembly efficiency. Utility Model Content

[0005] The main purpose of the utility model is to provide a multi-core low-voltage signal waterproof connector, aiming to improve the assembly capacity of the electrical connector to avoid technical problems such as damage to the electrical connector during the assembly process and loose plugs and sockets in the assembled finished product.

[0006] To achieve the above-mentioned purpose, the utility model proposes a multi-core low-voltage signal waterproof connector, including: a plug and a socket; the plug includes a plug shell and a first terminal, one end of the plug shell is provided with a groove, a first convex step is arranged in the groove, and a first inner hole for accommodating the first terminal is arranged on the first convex step; the socket includes a socket shell and a second terminal, the socket shell includes a flange and a second convex step and a third convex step respectively arranged at both ends of the flange, a connecting column for mounting the socket on the application end of an electronic device is convexly provided at the four corners of the flange, a connecting hole is provided on the connecting column, a metal sleeve is arranged in the connecting hole, a through hole for the first convex step to pass through is provided on the second convex step, a second inner hole for accommodating the second terminal is provided on the third convex step, and the second inner hole and the through hole are mutually connected.

[0007] Optionally, a first locking structure is further provided on the plug. The first locking structure is hinged to the plug housing. Pressing parts and clamping parts are respectively arranged at two ends of the first locking structure. A clamping hole is formed between the clamping part and the pressing part. A buckle that cooperates with the side of the clamping part close to the clamping hole is protruded on the second convex step. The buckle is provided with an inclined surface along the direction of plug installation.

[0008] Optionally, the plug further includes a second locking structure. The second locking structure is inserted into the first locking structure. A limiting part is extended and arranged at one end of the second locking structure. Inclined surfaces are arranged on both sides of the limiting part. The limiting part is clamped with the side of the clamping part背离 the clamping hole.

[0009] Optionally, a first locking part is further protruded on the plug housing. When the second locking structure is installed on the pressing part, the first locking part abuts against the side of the second locking structure背离 the first locking structure.

[0010] Optionally, a second locking part is further protruded on the second locking structure. When the second locking structure is installed on the first locking structure, the second locking part is movably arranged in the clamping hole.

[0011] Optionally, the electrical connector further includes a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the outer wall of the first convex step. A clamping sleeve is further sleeved on the outer wall of the first convex step. The clamping sleeve is clamped with the first convex step to embed the first sealing ring into the bottom of the groove. The second sealing ring is sleeved on the outer wall of the second convex step.

[0012] Optionally, a first guiding rib is protruded on the clamping sleeve. A first guiding groove adapted to the first guiding rib is formed on the first convex step.

[0013] Optionally, a hook part is protruded at the end of the first guiding rib.

[0014] Optionally, a plurality of sealing edges are arranged on the outer side of the first sealing ring and / or the outer side of the second sealing ring.

[0015] Optionally, a second guiding groove is formed on the outer side wall of the plug housing. The second guiding groove is in a U shape. A second guiding rib adapted to the second guiding groove is protruded on the second convex step.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. A metal sleeve is integrated in the installation hole, which can ensure that no bad conditions such as damage and cracking of the socket flange occur during the installation process of the socket.

[0018] 2. Design a second locking structure to perform secondary locking on the plug and socket. After the plug and socket are assembled and locked, push the secondary locking block to effectively prevent the plug and socket from accidentally falling off.

[0019] 3. The matching structure of guide ribs and guide grooves is set between each structure to avoid the phenomenon of misinsertion.

[0020] 4. The sealing ring is fixed to the contact part by crimping with a ferrule to ensure waterproof performance. At the same time, the sealing ring is hidden in the plastic shell and will not fall off or be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a multi-core low-voltage signal waterproof connector according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of a multi-core low-voltage signal waterproof connector according to an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the exploded structure of a socket according to an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the exploded structure of a plug according to an embodiment of the utility model;

[0026] Figure 5 This is a partial structural diagram of a plug according to an embodiment of the utility model;

[0027] Figure 6 The figure is a schematic cross-sectional structure diagram of a multi-core low-voltage signal waterproof connector according to an embodiment of the utility model.

[0028] Description of Figure Numbers:

[0029] Plug 1;

[0030] Plug housing 11;

[0031] Groove 111;

[0032] First convex step 112; first inner hole 112a; first guide groove 112b;

[0033] A first locking portion 113; a second guide groove 114;

[0034] A first terminal 12;

[0035] The first locking structure 13; the pressing portion 131; the clamping portion 132; the clamping hole 133;

[0036] The second locking structure 14; the limiting portion 141; the second locking portion 142;

[0037] A first sealing ring 15;

[0038] The ferrule 16; the first guide rib 161; the hook portion 162;

[0039] Socket 2;

[0040] Socket housing 21;

[0041] Flange 211; connecting column 211a; connecting hole 211b; metal sleeve 211c;

[0042] The second convex step 212; the through hole 212a; the buckle 212b; the second guide rib 212c;

[0043] The third convex step 213; the second inner hole 213a;

[0044] A second terminal 22;

[0045] A second sealing ring 23;

[0046] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0050] See also Figures 1 to 6 In one embodiment, the utility model provides a multi-core low-voltage signal waterproof connector, comprising: a plug 1 and a socket 2; the plug 1 comprises a plug housing 11 and a first terminal 12, one end of the plug housing 11 is provided with a groove 111, a first convex step 112 is provided in the groove 111, and a first inner hole 112a for accommodating the first terminal 12 is provided on the first convex step 112; the socket 2 comprises a socket housing 21 and a second terminal 22, the socket housing 21 comprises a flange 211 and second terminals 22 respectively provided at both ends of the flange 211. The flange 211 has four corners with a connecting column 211a for mounting the socket 2 on the application end of the electronic device. The connecting column 211a is provided with a connecting hole 211b. A metal sleeve 211c is provided in the connecting hole 211b. The second convex step 212 is provided with a through hole 212a for the first convex step 112 to pass through. The third convex step 213 is provided with a second inner hole 213a for accommodating the second terminal 22. The second inner hole 213a and the through hole 212a are interconnected.

[0051] Specifically, the plug shell 11 is a circular structure, the first convex step 112 is arranged at the center of the groove 111 in the plug shell 11, and a plurality of first inner holes 112a can be arranged, each inner hole respectively accommodating a first terminal 12, and the end of the plug shell 11 away from the first convex step 112 is also provided with a plurality of holes corresponding to the first inner holes 112a, so as to facilitate the insertion of the first terminal 12. The plug shell 11 is the outer packaging of the plug 1, mainly used to protect the internal circuit, and the plug shell 11 is made of insulating materials such as plastic and rubber to prevent electric shock and short circuit accidents.

[0052] The groove 111 is a shallow cutout at one end of the plug housing 11. The groove 111 is used to avoid the second convex step 212 during the plug-in process between the plug 1 and the socket 2, so as to ensure the stability of the connection between the plug 1 and the socket 2. In this embodiment, the first convex step 112 is slightly higher than the groove 111 so as to be connected with the third convex step 213 of the socket housing 21.

[0053] The first terminal 12 is used as a conductive contact of the plug 1 for circuit connection with the socket 2 or other connectors. The first terminal 12 has two crimping wings (not shown), one of which is crimped with the core wire of the external cable (not shown) to achieve signal conduction, and the other is crimped with the front end of the sealing plug (not shown) to achieve relative fixation of the sealing plug and the terminal. The first terminal 12 after crimping the cable is installed in the plug housing 11. The first terminal 12 and the inside of the plug housing 11 can be matched through holes, connectors, etc. to fix the first terminal 12 in the plug housing 11.

[0054] Furthermore, the socket housing 21 and the second terminal 22 are similar to the above-mentioned plug housing 11 and the first terminal 12 in the embodiment, and will not be described in detail here.

[0055] During the assembly process of the socket 2 and the plug 1, the first convex step 112 extends into the through hole 212a of the second convex step 212, and the side wall of the second convex step 212 extends into the groove 111 of the first convex step 112. Through this wrapping structure, the waterproof performance of the electrical connector is improved, and the stability of the connection between the plug 1 and the socket 2 is also enhanced. After the socket 2 and the plug 1 are assembled, the end of the first convex step 112 is connected to the end of the third convex step 213. At this time, the first inner hole 112a on the first convex step 112 is connected to the second inner hole 213a on the third convex step 213, and the first terminal 12 and the second terminal 22 realize the connection and transmission of electrical signals.

[0056] The flange 211 is a part of the socket housing 21. The flange 211 is used to fix the socket 2 to the application end of the electronic device, and at the same time provides additional support and stability. Here, the application end of the electronic device refers to the port used to connect external devices or circuits, which can be a panel, such as a hole on a chassis, a dashboard, a circuit board, etc. The connecting post 211a is a protruding part on the socket 2. Four symmetrically convex connecting posts 211a are provided at the four corners of the flange 211 to provide a fixed and stable connection, so as to reduce the external force on the flange 211 during the assembly process. The connecting hole 211b is located on the connecting post 211a. Assembly hole positions are provided on the application end of the electronic device corresponding to the connecting hole 211b. The two are installed by passing connecting parts such as screws through the connecting hole 211b and the assembly hole positions. In the prior art, the flange 211 is usually made of plastic and other materials, which is likely to cause damage to the connection during the installation of the connecting parts, affecting the assembly efficiency and the yield rate. Therefore, in this embodiment, a metal sleeve 211c is integrated in the installation hole to ensure that no bad conditions such as damage and cracking of the flange 211 of the socket 2 occur during the installation process. The metal sleeve 211c and the connecting hole 211b are installed by injection molding.

[0057] See Figure 5 , in this embodiment, a first locking structure 13 is further provided on the plug 1. The first locking structure 13 is hinged to the plug housing 11. Pressing parts 131 and clamping parts 132 are respectively provided at both ends of the first locking structure 13. A clamping hole 133 is formed between the clamping part 132 and the pressing part 131. See Figure 5 、 Figure 6 , a buckle 212b that cooperates with the side of the clamping part 132 close to the clamping hole 133 is convexly provided on the second convex step 212. The buckle 212b is provided with an inclined surface along the installation direction of the plug 1.

[0058] Specifically, two side plates (not marked) are further extended and provided on the outside of the first locking structure 13. The position of the buckle 212b is correspondingly provided on the outside of the second convex step 212. The first locking structure 13 is hinged between the two side plates. The hinged manner can be in the form of a rotating shaft, a pivot connection, etc. In this embodiment, the first locking structure 13 made of a flexible material is used to achieve the hinge. The shape of the first locking structure 13 is similar to the Chinese character "且". The long sides extending from both sides of it are hinged between the two side plates, and a plate-shaped clamping part 132 is provided at one end far from the long side.

[0059] Furthermore, during the assembly process of the socket 2 and the plug 1, the first locking structure 13 moves toward the direction close to the buckle 212b. When the clamping portion 132 abuts against the inclined surface of the buckle 212b, the clamping portion 132 moves along the inclined surface, and the first locking structure 13 tilts and swings as a whole until the clamping portion 132 is free from the limit of the buckle 212b. At this time, the clamping portion 132 falls with gravity, so that the buckle 212b falls into the locking hole 133, and one side of the clamping portion 132 abuts against the buckle 212b, thereby locking the plug 1 and the socket 2. When the locking of the two needs to be released, it is only necessary to press down the pressing portion 131. At this time, the clamping portion 132 at the other end tilts upwards according to the lever principle, releasing the abutment against the buckle 212b, and the plug 1 can be pulled out.

[0060] In this embodiment, the plug 1 also includes a second locking structure 14, which is plugged into the first locking structure 13. A limiting portion 141 is extended from one end of the second locking structure 14, and an inclined surface is provided on both sides of the limiting portion 141. The limiting portion 141 is clamped with the side of the clamping portion 132 away from the clamping hole 133.

[0061] Specifically, the second locking structure 14 is shaped like a mountain, and its two side walls can extend into the channel reserved on the first locking structure 13. The middle limiting portion 141 is connected by a plate made of flexible material so that it can extend into the first locking structure 13 and be movably set in the card hole 133.

[0062] Furthermore, when the plug 1 is installed with the second locking structure 14, the second locking structure 14 is first extended into the first locking structure 13, and the limiting portion 141 is inserted into the clamping hole 133, and then pushed in along the installation direction until the inclined surface on the limiting portion 141 contacts the clamping portion 132. Under the action of the inclined surface, the limiting portion 141 moves over the clamping portion 132, so that the limiting portion 141 abuts against the side of the clamping portion 132 away from the clamping hole 133. In addition, the second locking structure 14 can also be installed after the plug 1 and the socket 2 are installed. The working principle is similar to the above embodiment and will not be described in detail here. After the three are assembled, the buckle 212b on the socket 2 is constrained between the clamping portion 132 and the limiting portion 141. Before the second locking structure 14 is removed, the pressing portion 131 of the first locking structure 13 will increase the damping performance, thereby playing the role of unlocking and preventing fooling.

[0063] See also Figure 5 , Figure 6In this embodiment, the plug housing 11 is further provided with a first locking portion 113. When the second locking structure 14 is installed on the pressing portion 131, the first locking portion 113 abuts against the side of the second locking structure 14 away from the first locking structure 13. In this embodiment, the first locking portion 113 is a triangular convex block. The first locking portion 113 abuts against the two side walls of the second locking structure 14 and constrains it in the opposite direction to the pressing portion 131, blocking the upward movement space of the clamping portion 132. Therefore, under the premise of not pulling out the second locking structure 14 horizontally, the pressing portion 131 cannot be pressed to release the lock between the socket 2 and the plug 1, thereby realizing the secondary locking after the plug 1 and the socket 2 are matched.

[0064] See also Figures 3 to 6 In this embodiment, the second locking structure 14 is further provided with a second locking portion 142. When the second locking structure 14 is installed on the first locking structure 13, the second locking portion 142 is movably disposed in the locking hole 133. When the second locking structure 14 is pulled out, the second locking portion 142 will cooperate with the inner wall of the button portion to limit the horizontal range of movement of the second locking structure 14. After the second locking portion 142 abuts against the button portion, the second locking structure 14 needs to be pulled out upward to be removed from the first locking structure 13.

[0065] See also Figure 2 , Figure 4 , Figure 6 In this embodiment, the electrical connector further includes a first sealing ring 15 and a second sealing ring 23. The first sealing ring 15 is sleeved on the outer wall of the first convex step 112. A clamping sleeve 16 is also sleeved on the outer wall of the first convex step 112. The clamping sleeve 16 is clamped with the first convex step 112 to embed the first sealing ring 15 into the bottom of the groove 111. The second sealing ring 23 is sleeved on the outer wall of the second convex step 212. The design of the sealing ring ensures the sealing performance of the connector.

[0066] See also Figures 1 to 4 In this embodiment, the ferrule 16 is provided with a first guide rib 161, and the first convex step 112 is provided with a first guide groove 112b adapted to the first guide rib 161. A hook 162 is provided at the end of the first guide rib 161. The installation of the ferrule 16 and the first sealing ring 15 is more convenient and accurate. Through the adaptation of the first guide rib 161 and the first guide groove 112b and the action of the hook 162, the positions of the ferrule 16 and the first sealing ring 15 can be fixed to prevent them from moving or falling off.

[0067] See also Figure 2 , Figure 6, in this embodiment, a plurality of sealing edges (not marked) are provided on the outer side of the first sealing ring 15 and / or the outer side of the second sealing ring 23. The sealing edges are in close contact with the inner wall of the installation place by means of interference fit, so as to increase the interaction force with the corresponding inner wall.

[0068] See Figures 1 to 4 , in this embodiment, a second guiding groove 114 is formed on the outer side wall of the plug housing 11. The second guiding groove 114 is in a U shape, and a second guiding rib 212c adapted to the second guiding groove 114 is protruded on the second convex step 212. The adaptation of the second guiding groove 114 and the second guiding rib 212c enables part of the plug 1 to be inserted along the correct direction, and makes it aligned and fixed. The U-shaped structure can prevent part of the plug 1 from deviating or swaying during the insertion process.

[0069] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields shall be included in the patent protection scope of the present invention.

Claims

1. A multi-core low-voltage signal waterproof connector, characterized in that: Including: A plug and a socket; The plug includes a plug housing and a first terminal. One end of the plug housing is provided with a groove, and a first convex step is arranged in the groove. A first inner hole for accommodating the first terminal is opened on the first convex step; The socket includes a socket housing and a second terminal. The socket housing includes a flange and second and third convex steps respectively arranged at both ends of the flange. A connecting column for mounting the socket on the application end of the electronic device is convexly provided at each of the four corners of the flange. A connecting hole is opened in the connecting column, and a metal sleeve is arranged in the connecting hole. A through hole for the first convex step to pass through is opened on the second convex step, and a second inner hole for accommodating the second terminal is opened on the third convex step. The second inner hole communicates with the through hole.

2. The multi-core low-voltage signal waterproof connector according to claim 1, characterized in that: A first locking structure is further arranged on the plug. The first locking structure is hinged to the plug housing. Pressing parts and clamping parts are respectively arranged at both ends of the first locking structure. A clamping hole is formed between the clamping part and the pressing part. A clamping buckle matched with the side of the clamping part close to the clamping hole is convexly provided on the second convex step. A slope is arranged on the clamping buckle along the direction of plug installation.

3. The multi-core low-voltage signal waterproof connector according to claim 2, characterized in that: The plug further includes a second locking structure. The second locking structure is inserted into the first locking structure. A limiting part is extended and arranged at one end of the second locking structure. Slopes are arranged on both sides of the limiting part. The limiting part is clamped with the side of the clamping part背离 the clamping hole.

4. The multi-core low-voltage signal waterproof connector according to claim 3, characterized in that: A first locking part is further convexly provided on the plug housing. When the second locking structure is installed on the pressing part, the first locking part abuts against the side of the second locking structure背离 the first locking structure.

5. The multi-core low-voltage signal waterproof connector according to claim 4, characterized in that: A second locking part is further convexly provided on the second locking structure. When the second locking structure is installed on the first locking structure, the second locking part is movably arranged in the clamping hole.

6. The multi-core low-voltage signal waterproof connector according to claim 1, characterized in that: The multi-core low-voltage signal waterproof connector further includes a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the outer wall of the first convex step. A clamping sleeve is further sleeved on the outer wall of the first convex step. The clamping sleeve is clamped with the first convex step to embed the first sealing ring into the bottom of the groove. The second sealing ring is sleeved on the outer wall of the second convex step.

7. The multi-core low-voltage signal waterproof connector according to claim 6, characterized in that: A first guiding rib is convexly provided on the clamping sleeve. A first guiding groove adapted to the first guiding rib is opened on the first convex step.

8. The multi-core low-voltage signal waterproof connector according to claim 7, characterized in that: A hook part is convexly provided at the end of the first guiding rib.

9. The multi-core low-voltage signal waterproof connector according to claim 6, characterized in that: A plurality of sealing ribs are arranged on the outer side of the first sealing ring and / or the outer side of the second sealing ring.

10. The multi-core low-voltage signal waterproof connector according to claim 1, characterized in that: A second guiding groove is opened on the outer side wall of the plug housing. The second guiding groove is in a U shape. A second guiding rib adapted to the second guiding groove is convexly provided on the second convex step.

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