Dustproof self-locking large-current connector

Abstract

The utility model belongs to the field of electric connectors, and particularly relates to a dustproof self-locking large-current connector. A dustproof self-locking large-current connector comprises a male-end connector and a female-end connector, the male-end connector is matched with the female-end connector in an inserted mode, at least one tail of the male-end connector and the female-end connector is provided with a rear cover, the rear end of the rear cover extends outwards to form an installation shell, an installation cavity is formed in the installation shell, and the dustproof self-locking large-current connector further comprises a tail plug. The tail plug is assembled in the mounting cavity, and at least one threading hole is formed in the tail plug. According to the utility model, the connector is improved, the dustproof structure at the tail end of the electric connector is realized, the dustproof effect of the connector is improved, and the locking connection is reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric connector, especially relates to a dustproof self-locking high-current connector. BACKGROUND

[0002] The tail of the connector in prior art is provided with a dustproof plug, then a rear cover is connected with the outer wall of the shell of the connector to fix the dustproof plug, in order to ensure that the thickness of the connector is not increased, the tail of the connector shell needs to be thinned to provide space for the rear cover, and the wall thickness of the rear cover is thin, which is difficult to process, the yield is low, and the rear cover is prone to breakage during assembly, thereby increasing the manufacturing cost of the product. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model improves the connector, realizes a dustproof structure of the tail end of the electric connector, improves the dustproof effect of the connector, and the locking connection is reliable.

[0004] The technical scheme of the utility model is as follows:

[0005] A dustproof self-locking high-current connector, which comprises a male connector and a female connector, the male connector is connected with the female connector in plug-in cooperation, at least one tail of the male connector and the female connector is provided with a rear cover, the rear end of the rear cover extends outward to form a mounting shell, a mounting cavity is formed in the mounting shell, and a tail plug is further included, the tail plug is assembled in the mounting cavity, and at least one threading hole is formed in the tail plug.

[0006] Further, at least one undercut is formed at the end of the mounting shell, a locking groove is formed in the tail plug, when the tail plug is assembled in the mounting cavity, the undercut is matched in the locking groove, and the undercut is used to limit the tail plug from being taken out of the mounting cavity.

[0007] Further, a guide slope is formed at the other side of the locking groove of the tail plug.

[0008] Further, the tail plug comprises at least one tail plug ring body, a tail plug baffle is formed on the inner wall of the tail plug ring body, and the tail plug baffle of each tail plug ring body is provided with a threading hole.

[0009] Further, an interference rib is formed in the middle of the outer surface of the tail plug ring body of the tail plug, and the interference rib is tightly attached to the inner wall of the mounting cavity when the tail plug is assembled in the mounting cavity.

[0010] Further, a cover interference rib is formed on the inner wall of the mounting cavity, and the surface of the tail plug is tightly attached to the interference rib and the inner wall of the mounting cavity when the tail plug is assembled in the mounting cavity.

[0011] Further, the threading hole in the center of the tail plug baffle is recessed.

[0012] Furthermore, the back cover includes at least two sleeves, one end of which is connected and a snap-fit ​​outer shell is provided at the connection end of the two sleeves. A gap is provided between the snap-fit ​​outer shell and the sleeves. When the back cover is assembled with a male connector or a female connector, the sleeves are embedded and fitted inside the male connector or female connector and the ends abut against the claws. The male connector or female connector fits in the gap, and the snap-fit ​​outer shell is connected to the outer wall of the male connector or female connector.

[0013] Furthermore, the snap-fit ​​housing has snap-fit ​​holes, and the outer wall of the male or female connector has snap-fit ​​bosses. When the back cover is assembled with the male or female connector, the snap-fit ​​bosses engage with the snap-fit ​​holes.

[0014] Furthermore, the female connector is provided with a cantilever, and the front end of the cantilever is provided with a first locking part. The male connector is provided with a cantilever beam, and the surface of the cantilever beam and the male connector are provided with a gap for the cantilever beam to pass through. When the male connector and the female connector are plugged in, the cantilever beam passes through the gap and the first locking part abuts against the side of the cantilever beam away from the female connector. A reinforcing rib is provided at the connection between the cantilever beam and the female connector, which is connected to the bottom surface of the cantilever beam and the female connector.

[0015] In summary, this utility model has the following beneficial effects:

[0016] This utility model improves the dustproof structure of the tail of the electrical connector. Specifically, it improves the back cover of the male connector and the rear connector. By extending the mounting cavity, a mounting area with one end open is obtained, which facilitates the installation of the tail plug. The tail plug has two or more wire holes, which is suitable for the use of multiple wire harnesses. The wire holes are in close contact with the surface of the wire harness, which has a good dustproof and waterproof effect, avoiding the problem of short circuit and momentary disconnection caused by foreign objects entering the connector during operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 for Figure 2 A cross-sectional view of AA in the diagram;

[0020] Figure 4 This is a perspective view of the present invention (the tail plug is not installed in the rear cover of the female connector);

[0021] Figure 5This is a three-dimensional schematic diagram of the present invention (the female connector is a mounting back cover);

[0022] Figure 6 This is a 3D schematic diagram of the back cover;

[0023] Figure 7 A three-dimensional schematic diagram of the back cover from another perspective;

[0024] Figure 8 This is a 3D schematic diagram of the tail plug.

[0025] Figure 9 This is a half-section three-dimensional schematic diagram of the tail plug;

[0026] Figure 10 A half-sectional view of the rear cover (with interference ribs) and the tail plug;

[0027] In the diagram, 1 represents the male connector, 10 represents the cantilever beam, and 101 represents the clearance.

[0028] 2 is the female connector, 20 is the cantilever, 201 is the first locking part, and 202 is the reinforcing rib.

[0029] 3 is the back cover, 30 is the mounting housing, 300 is the mounting cavity, 301 is the snap-on, 33 is the sleeve, 31 is the snap-fit ​​housing, 32 is the gap, 310 is the snap-fit ​​hole, 6 is the snap-fit ​​boss, and 3001 is the cover interference rib.

[0030] 4 is the tail plug, 40 is the wire hole, 41 is the locking groove, 42 is the guide ramp, 400 is the tail plug ring body, 401 is the tail plug baffle, and 402 is the interference rib.

[0031] 5 represents the chuck. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0033] It should be noted that when a component is referred to as being "set on" or "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "fixed to" another component, or "fixedly connected" to another component, the fixing method can be detachable or non-detachable. When a component is considered to be "connected" or "rotatably connected" to another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] In this invention, terms such as "first," "second," and "third" are used not to represent specific quantities or orders, but merely to distinguish names.

[0036] join Figures 1 to 9 As shown, a dustproof self-locking high-current connector includes a male connector 1 and a female connector 2. The male connector 1 and the female connector 2 are plugged into each other. At least one tail of the male connector 1 and the female connector 2 is provided with a rear cover 3. The rear end of the rear cover 3 extends outward to form a mounting housing 30. A mounting cavity 300 is formed inside the mounting housing 30. The connector also includes a tail plug 4, which is assembled inside the mounting cavity 300. The tail plug 4 has at least one wire hole 40.

[0037] The dustproof self-locking high-current connector described in this utility model is applicable to various specifications of current connectors, such as 1PIN, 2PIN, or 3PIN. This utility model improves the dustproof structure at the tail of the electrical connector, specifically by improving the back cover of the male connector and the rear connector. By extending the mounting cavity, a mounting area with one open end is obtained. The tail plug is inserted into the mounting cavity from the opening, which facilitates the installation of the tail plug. Moreover, the installation of the tail plug is not limited by whether the back cover is installed, thereby changing the installation process and improving installation efficiency. The tail plug has one or more wire holes, which are suitable for the use of single or multiple cables. The wire holes are in close contact with the surface of the wire harness, which has a good dustproof and waterproof effect, avoiding short circuits and momentary interruptions caused by foreign objects entering the connector during operation. The high-current connector in this embodiment is a 2PIN high-current connector with two wire holes on the tail plug.

[0038] To improve the reliability of the tail plug's fixation within the mounting cavity, see [reference needed]. Figure 3 and Figure 6As shown, the end of the mounting housing 30 is provided with at least one buckle 301. In this embodiment, the end of the mounting housing is provided with two buckles, and the two buckles are symmetrically arranged. Specifically, they are located in the middle of the length direction of the mounting housing and on the inner wall of the end of the mounting housing. The tail plug 4 is provided with a locking groove 41. When the tail plug 4 is assembled in the mounting cavity 300, the buckle 301 is engaged in the locking groove 41. The buckle is used to prevent the tail plug from falling out of the mounting cavity. The buckle can effectively fix the tail plug and prevent the tail plug from falling off due to vibration, external force or other phenomena during the operation of the equipment.

[0039] See Figure 8 As shown, the tail plug 4 is provided with a guide ramp 42 on the opposite side of the locking groove 41. Since the buckle protrudes from the inner wall of the mounting cavity, there is a large interference between the tail plug and the buckle during the assembly of the tail plug. Moreover, since the buckle is located at the end of the mounting housing, it is difficult for the tail plug to enter the mounting cavity. Therefore, a guide ramp is added. The guide ramp provides a clearance space and guides the tail plug in the initial stage of entering the mounting cavity, which facilitates the installation of the tail plug and improves the installation efficiency.

[0040] This section further specifies the structure of the tail plug; see [link / reference]. Figure 8 and Figure 9 As shown, the tail plug 4 includes at least one tail plug ring 400. A tail plug baffle 401 is formed on the inner wall of the tail plug ring 400. Each tail plug ring 400 has a wire hole 40 on its tail plug baffle 401. The tail plug can be adjusted according to the number of wires on the male or female connector. In this embodiment, the tail plug includes two connected tail plug rings. The two tail plugs are connected to form a whole, and a locking groove is located at the connection of the two tail plug rings. This is suitable for a 2-pin electrical connector. The outer wall of the tail plug ring matches the inner wall of the mounting cavity, and the two rings are not connected, which also increases the creepage distance of the connector. This ensures that the creepage distance of the connector is qualified. On the other hand, the thickness of the baffle is less than the thickness of the ring body. Specifically, the baffle is a circular sheet connected to the inner wall of the tail plug ring body and close to the outer end of the tail plug ring body. The outer end is the end close to the opening of the mounting cavity. The baffle adopts a sheet design, which can save materials on the one hand, and reduce the contact area between the ring body and the cable on the other hand, reducing the assembly resistance between the two and facilitating installation. Furthermore, the tail plug is made of soft rubber. The tail plug made of soft rubber has a certain rigidity, which can ensure the stability of the tail plug body structure and ensure the sealing performance between it and the mounting housing.

[0041] See Figure 8 and Figure 9As shown, the tail plug ring 400 has an interference rib 402 in the middle of its outer surface. When the tail plug is assembled in the mounting cavity, the interference rib is in close contact with the inner wall of the mounting cavity. The interference rib can improve the structural strength of the outer wall of the tail plug, thereby ensuring the overall shape of the tail plug. After being installed in the mounting cavity, it can ensure the sealing of the tail plug to the mounting cavity. At the same time, the interference rib is higher than the tail plug ring, which can also reduce the installation resistance between the outer wall of the tail plug and the inner wall of the mounting cavity during the assembly process of the tail plug and the mounting cavity.

[0042] Or, see Figure 10 As shown, the inner wall of the mounting cavity 300 is provided with a cover interference rib 3001. When the tail plug is assembled in the mounting cavity, the surface of the tail plug is in close contact with the interference rib and the inner wall of the mounting cavity. Another structural form is given here, in which a cover interference rib is provided on the inner wall of the mounting cavity, and the surface of the tail plug is a smooth surface without any ribs higher than the surface of the tail plug. When the tail plug is assembled in the mounting cavity, the cover interference rib and the outer wall of the tail plug will have an interference fit. The surface of the tail plug will be squeezed by the cover interference rib and become concave. The two are in close contact, ensuring the sealing between the inner wall of the mounting cavity and the outer wall of the tail plug.

[0043] See Figure 9 As shown, the tail plug baffle 401 is recessed towards the wire hole at the center. Specifically, the tail plug baffle is recessed from the opening end of the mounting cavity to the other end. When threading the wire, the tail plug's ring body is not easily deformed. During the threading process, the tail plug's ring body will not deform towards the wire hole. The tail plug is made of soft rubber, and the wire hole has the possibility of deformation, which can adapt to various wire diameters.

[0044] The specific structure of the back cover is described here; see [link / reference]. Figure 4 , Figure 6 and Figure 7As shown, the back cover 3 includes at least two sleeves 33. The number of sleeves is determined according to the number of pins of the electrical connector. In this embodiment, the electrical connector is a 2-pin connector. One end of the two sleeves is connected, and a snap-fit ​​housing 31 is provided at the connection end of the two sleeves. A gap 32 is provided between the snap-fit ​​housing 31 and the sleeves 33. When the back cover 3 is assembled with the male connector 1 or the female connector, the sleeves 33 are embedded and fitted inside the male connector or the female connector, and the ends abut against the claws 5. The male connector or the female connector fits in the gap, and the snap-fit ​​housing 31 is connected to the male connector or the female connector. The outer wall of the connector is connected, and the back cover includes a sleeve and a snap-fit ​​housing. The sleeve is embedded in the male or female connector to position the copper parts using a locking claw, thereby fixing the connector terminals. Then, the snap-fit ​​housing is connected to the outer wall of the male or female connector to fix the back cover to the male or female connector. It can be seen that a quick-connect connector structure is realized here, which is convenient for assembly. The male and female connectors share the same structural components, which can reduce the manufacturing cost of the product. The tail plug and the back cover can also be pre-assembled, which can further improve the assembly efficiency of the connector.

[0045] See Figure 5 and Figure 7 As shown, the snap-fit ​​housing 31 has snap-fit ​​holes 310, and the outer wall of the male connector 1 or female connector 2 has snap-fit ​​bosses 6. When the back cover is assembled with the male connector or female connector, the snap-fit ​​bosses fit into the snap-fit ​​holes. Through the cooperation between the snap-fit ​​holes and the snap-fit ​​bosses, the snap-fit ​​housing is connected to the housing of the male connector or female connector. The assembly is convenient and the connection is stable and reliable.

[0046] See Figures 1 to 4 As shown, the female connector 2 is provided with a cantilever 20, and the front end of the cantilever 20 is provided with a first locking part 201. The male connector 1 is provided with a cantilever beam 10. The surfaces of the cantilever beam 10 and the male connector 1 are provided with a gap 101 for the cantilever to pass through. When the male connector and the female connector are plugged in, the cantilever 20 passes through the gap and the side of the cantilever that the first locking part abuts against is away from the female connector. The first locking part is a protrusion provided at the front end of the cantilever and higher than the surface of the cantilever, and the protrusion can pass through the gap. When the male connector and the female connector are plugged in, the cantilever is compressed and the end of the cantilever passes through the gap. When the first locking part passes through the gap, the cantilever rebounds and the side of the first locking part abuts against one side of the cantilever beam. The cantilever beam and the cantilever are in surface contact, which is stable and firm.

[0047] See Figure 1As shown, a reinforcing rib 202 is provided at the connection between the cantilever 20 and the female connector 2, which is connected to the bottom surface of the cantilever 20 and the female connector 2. The reinforcing rib improves the connection reliability between the cantilever and the female connector and effectively improves the service life of the cantilever.

[0048] In summary, this utility model has the following beneficial effects:

[0049] This utility model improves the dustproof structure of the tail of the electrical connector. Specifically, it improves the back cover of the male connector and the rear connector. By extending the mounting cavity, a mounting area with one end open is obtained, which facilitates the installation of the tail plug. The tail plug has two or more wire holes, which is suitable for the use of multiple wire harnesses. The wire holes are in close contact with the surface of the wire harness, which has a good dustproof and waterproof effect, avoiding the problem of short circuit and momentary disconnection caused by foreign objects entering the connector during operation.

[0050] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A dustproof self-locking high current connector, comprising a male connector and a female connector, the male connector and the female connector being plugged together, characterized in that: The tail of at least one of the male connector and the female connector is provided with a rear cover, the rear end of the rear cover extends outward to form a mounting shell, the mounting shell has a mounting cavity, and a tail plug is arranged in the mounting cavity.

2. The dustproof self-locking high-current connector according to claim 1, characterized in that: The end of the mounting shell is provided with at least one undercut, the tail plug is provided with a locking groove, and when the tail plug is arranged in the mounting cavity, the undercut is matched with the locking groove, and the undercut is used to limit the tail plug from being pulled out of the mounting cavity.

3. The dustproof self-locking high current connector according to claim 2, characterized in that: The tail plug is provided with a guide slope on the side opposite to the locking groove.

4. The dustproof self-locking high current connector according to any one of claims 1-3, characterized in that: The tail plug includes at least one tail plug ring body, the inner wall of the tail plug ring body is provided with a tail plug baffle, and the tail plug baffle is provided with a wire hole.

5. The dustproof self-locking high current connector according to claim 4, characterized in that: The outer surface of the tail plug ring body of the tail plug is provided with an interference rib, and when the tail plug is arranged in the mounting cavity, the interference rib is in close contact with the inner wall of the mounting cavity.

6. A dustproof self-locking high current connector according to claim 4, characterized in that: The inner wall of the mounting cavity is provided with a cover interference rib, and when the tail plug is arranged in the mounting cavity, the surface of the tail plug is in close contact with the interference rib and the inner wall of the mounting cavity.

7. A dustproof self-locking high current connector according to claim 5 or 6, characterized in that: The wire hole in the center of the tail plug baffle is recessed.

8. The dustproof self-locking high current connector according to claim 1, wherein: The rear cover includes at least two sleeve bodies, one end of the two sleeve bodies is connected, and a clamping shell is arranged at the connected end of the two sleeve bodies, a gap is arranged between the clamping shell and the sleeve body, when the rear cover is arranged with the male connector or the female connector, the sleeve body is embedded and matched in the inside of the male connector or the female connector, and the end is abutted on the clamping jaw, the male connector or the female connector is matched in the gap, and the clamping shell is connected with the outer wall of the male connector or the female connector.

9. The dustproof self-locking high current connector according to claim 8, characterized in that: The clamping shell is provided with a clamping hole, and the outer wall of the male connector or the female connector is provided with a clamping boss, when the rear cover is arranged with the male connector or the female connector, the clamping boss is matched in the clamping hole.

10. The dustproof self-locking high current connector according to claim 1, wherein: The female connector is provided with a cantilever, the front end of the cantilever is provided with a first clamping part, the male connector is provided with a cantilever beam, the cantilever beam is provided with a gap for the cantilever to pass through, when the male connector is inserted into the female connector, the cantilever passes through the gap, the first clamping part is abutted on the side away from the female connector of the cantilever beam, and a reinforcing rib is arranged at the connection between the cantilever and the female connector and connected with the bottom surface of the cantilever and the female connector.

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