Metal structural member and socket

Abstract

The utility model relates to a metal structural member, which comprises a metal shell and a sleeve shell fixed on the metal shell, the metal shell comprises a tubular annular outer main body, an outer wrapping ring body formed by bending and extending backwards from the front end of the annular outer main body, an annular inner main body formed by bending and extending forwards from the rear end of the annular outer main body, and a clamping cavity formed by penetrating through the annular inner main body; the inserting cavity is formed in the annular outer body, the rear wall face is connected with the annular outer body and the annular inner body, the sleeve shell is hollow to form a sleeve shell cavity, the front portion of the sleeve shell is arranged on the surface of the annular outer body in a sleeving mode and fixed in a spot welding mode, and the rear portion of the sleeve shell backwards exceeds the rear wall face. The socket further comprises a socket body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical connection, in particular to a metal structure and a socket. BACKGROUND

[0002] Type C USB interface has been widely used in various electronic devices for data transmission and charging, etc., and also derived different design schemes with different functions to adapt to different application environments and customer needs; such as large current, waterproof, high frequency data transmission, etc.

[0003] Type C USB socket is generally assembled in electronic devices for mating with plug, the traditional USB socket includes a plug-in part and a metal shell sleeved outside the plug-in part, if it is a waterproof scheme, the metal shell is generally a seamless tubular structure formed by stretching, and the plug-in part includes a first terminal group, a second terminal group, a middle plate between the first terminal group and the second terminal group, and an insulating body for holding the first terminal group, the second terminal group and the middle plate as a whole, in order to solve the fixation between the plug-in part and the seamless tubular metal shell, the plug-in part further includes a fixing part, the fixing part is generally made of metal material, the structure scheme of the fixing part can be a circular sleeve sleeved on the insulating body or a sheet structure embedded in the insulating body, and then the fixing part is fixed on the metal shell by spot welding to realize the positioning and fixing of the plug-in part, such as the patent application No. 201710405916.9 of the People's Republic of China discloses the above technology. However, the above scheme has the following problems: the forming scheme of the plug-in part is complex, the addition of the fixing part affects the space utilization of the plug-in part and the structural layout of the plug-in part, and the spot welding process is easy to cause unevenness on the surface of the metal shell. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a metal structure and a socket which are simple in structure and can directly limit the plug-in part.

[0005] To solve the above technical problems, the present application provides a metal structure, which comprises a metal shell and a sleeve shell fixed on the metal shell, the metal shell comprises a tubular annular outer body, an outer wrapping ring body formed by bending and extending from the front end of the annular outer body to the rear, an annular inner body formed by bending and extending from the rear end of the annular outer body to the front, a clamping cavity formed through the annular inner body, a plug-in cavity formed in the annular outer body, and a rear wall surface connecting the annular outer body and the annular inner body, the sleeve shell is hollow to form a sleeve shell cavity, the front part of the sleeve shell is sleeved on the surface of the annular outer body and is fixed by spot welding, and the rear part of the sleeve shell exceeds the rear wall surface to the rear.

[0006] Preferably, the metal shell is manufactured by a stretching process, the wall of the annular outer body, the annular inner body and the outer wrapping ring body is seamless, the inner diameter of the clamping cavity is smaller than the inner diameter of the inserting cavity, the annular inner body is located in the inserting cavity and the front end does not exceed the annular outer body, the inserting cavity includes a first part located in front of the annular inner body and a second part located between the annular outer body and the annular inner body.

[0007] Preferably, the outer wrapping ring body includes an extension ring body stretched reversely from the front end of the annular outer body and attached to the outer surface of the annular outer body, a folded part folded from the rear end of the extension ring body to the lateral outside, and a groove formed at the bending part of the extension ring body and the folded part, and a sealing ring is arranged on the extension ring body and the folded part.

[0008] To solve the above technical problems, the application further provides a socket, which comprises the metal structural member and an inserting member sleeved in the metal structural member, the inserting member comprises a terminal group and an insulating body for integrally holding the terminal group, the insulating body comprises a base, a clamping part formed on the front side of the base, and a butt joint tongue part formed by extending forward from the clamping part, each conductive terminal of the terminal group comprises a contact part exposed on the surface of the butt joint tongue part, a holding part extending backward from the contact part and embedded in the insulating body, and a solder leg extending backward from the holding part and out of the base, the inserting member is inserted into the metal shell from the rear, the clamping part is clamped in the clamping cavity, the outer diameter of the base is larger than the outer diameter of the clamping part, the front end surface of the base forms an abutting end surface abutting on the rear wall surface, and the base is at least partially inserted and fixed into the sleeve cavity.

[0009] Preferably, the metal structural member further comprises a fixed shell fixed on one side surface of the sleeve, the fixed shell comprises an attachment main body attached and welded on the surface of the sleeve and a fixed leg formed by extending from the lateral two sides of the attachment main body, and the fixed leg is used for fixing the socket on a printed circuit board.

[0010] Preferably, a partition part is formed between the base and the clamping part of the insulating body, the base and the clamping part are integrally connected through the terminal group, and the partition part at least partially invades into the clamping cavity, so that the partition part is at least partially surrounded by the clamping cavity.

[0011] Preferably, glue injection holes communicating with the partition part are arranged on the upper and lower sides of the sleeve, waterproof glue is injected into the partition part from the glue injection holes, and the waterproof glue fills the partition part and is bonded to the inner wall surface of the clamping cavity to achieve waterproofing.

[0012] Preferably, the base of the insulating body is provided with glue injection notches on the upper and lower sides, which are recessed from the front end surface of the base, and the sleeve shell is provided with glue injection holes corresponding to the glue injection notches on the upper and lower sides, waterproof glue is injected into the glue injection notches and the partition part from the glue injection holes, and the waterproof glue fills the partition part and is bonded to the inner wall of the clamping cavity to achieve waterproofing.

[0013] Preferably, a front protruding part is formed in the middle of the glue injection notch and protrudes forward, the front end of the front protruding part does not exceed the abutting end surface of the base, and the front protruding part is mainly used to increase the wrapping of the terminal group, and the front protruding part is provided with side flow ports on the lateral sides for facilitating the flow of waterproof glue.

[0014] Preferably, the waterproof glue forms a waterproof glue block after filling the partition part, the waterproof glue block includes a middle part that invades at least part of the clamping cavity and an injection part that extends outward from the middle part, and the fixed shell is provided with corresponding glue injection holes corresponding to the glue injection holes of the sleeve shell.

[0015] Preferably, the terminal group includes a first terminal group and a second terminal group arranged in two rows in the vertical direction, and a middle plate arranged between the first terminal group and the second terminal group, and the first terminal group, the second terminal group, and the middle plate are integrally held by the insulating body.

[0016] Preferably, the middle plate includes a middle plate body, a buckle groove formed on the front end of the lateral sides of the middle plate body and exposed on the outer side surface of the butt tongue part, and an abutting force arm that extends from the rear end of the middle plate body to the base on the lateral sides, and the lateral width of a pair of abutting force arms is greater than the lateral width of the clamping cavity.

[0017] Preferably, the abutting force arms at least partially overlap with the rear wall surface from the front-rear direction, and the middle plate body includes two pieces arranged on the lateral sides, and the two pieces of the middle plate body are integrally connected by a front end connecting part and a rear end connecting part at the front and rear ends, respectively, and the abutting force arms are formed by extending from the middle plate bodies on the lateral sides of the rear end connecting part.

[0018] The metal structure and the socket of the present application are manufactured by a stretching process, the metal shell is formed into an annular outer body, an annular inner body is stretched forward from the rear end of the annular outer body, and an outer wrapping ring body is extended backward from the outer edge of the annular outer body, and the metal shell manufactured by this process achieves a seamless structure.

[0019] The plug-in part is directly inserted into the clamping cavity in the annular inner body, and then the partition part of the plug-in part is placed into the sleeve cavity of the sleeve shell sleeved on the rear end of the annular outer body, and waterproof glue is injected into the partition part through the glue injection hole in the sleeve shell to form a waterproof waterproof glue block to achieve waterproofing. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application. In the drawings:

[0021] Figure 1 It is a perspective view of the socket of the present application;

[0022] Figure 2 It is a perspective exploded view of the socket of the present application;

[0023] Figure 3 It is a perspective view of the metal shell of the present application;

[0024] Figure 4 It is a perspective view of the metal shell of the present application from another angle;

[0025] Figure 5 It is a perspective view of the plug-in part of the socket of the present application;

[0026] Figure 6 It is a perspective exploded view of the plug-in part of the socket of the present application;

[0027] Figure 7 It is a sectional view along the A-A line shown in the figure; Figure 5

[0028] It is a sectional view along the B-B line shown in the figure; Figure 8

[0029] It is a sectional view along the C-C line shown in the figure. Figure 9

[0030] It is a perspective view of the plug-in part of the socket of the present application after the waterproof glue is injected and solidified; Figure 10 Figure 1 It is a perspective view of the plug-in part of the socket of the present application after the waterproof glue is injected and solidified;

[0031] Figure 11 Figure 1 It is a schematic view of the metal plate before being connected with the material belt and drawn;

[0032] Figure 12 It is a schematic view of the metal plate after being drawn for the first time;

[0033] Figure 13 It is a schematic view of the metal plate after being drawn for the first time;

[0034] Figure 14 ​​It is a schematic view of the metal plate after the second drawing forming;

[0035] Figure 15 It is a schematic view of the metal plate after the third drawing forming.

[0036] Explanation of reference signs

[0037] Plug-A; metal shell-10; annular outer body-11; plug cavity-111; annular inner body-12; clamping cavity-121; rear wall-13; outer sleeve ring-14; extension ring-141; folding part-142; groove-143; metal shell-20; sleeve-21; sleeve body-211; sleeve cavity-212; glue injection hole-213, 223; fixed shell-22; fitted body-221; fixed foot-222; sealing ring-23; waterproof rubber block-24; intermediate part-241; injection part-242; insulating body-30; base-31; abutting end face-311; glue injection gap-312; front convex part-313; side flow port-314; clamping part-32; butt tongue-33; partition-34; first terminal group-41; contact part-411; holding part-412; soldering leg-413; second terminal group-42; middle plate-43; middle plate body-431; buckle groove-432; abutting force arm-433; tail end connecting part-434; front end connecting part-435; first insulator-44; second insulator-45.

[0038] Main material belt-71; connecting material belt-72; metal plate-80; pre-stretching plate-81; post-stretching plate-82. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0040] The present application is shown in Figure 1 The front direction is the front-to-back direction of the X direction, the right side is the lateral direction of the Y direction, and the upper side is the vertical direction of the Z direction.

[0041] Please refer to Figure 1 , Figure 2 , the socket of the present application includes a plug A, a metal shell 10 sleeved outside the plug A, a metal shell 20 partially sleeved outside the rear end of the metal shell 10, a waterproof rubber block 24, and a sealing ring 16 arranged at the front end of the metal shell 10. The metal shell 10 and the metal shell 20 jointly constitute the metal structural part of the present application.

[0042] Please continue to refer to Figure 2、 Figures 5 to 9 、 Figure 11 As shown in the drawings, the connector A comprises a first terminal group 41, a second terminal group 42, a middle plate 43, and an insulating body 30 holding the first terminal group 41 and the second terminal group 42 as a whole. The first terminal group 41 and the second terminal group 42 can be collectively referred to as a terminal group. The present application is applicable not only to the structure of two terminal groups but also to the structure of only one terminal group.

[0043] The first terminal group 41 is held as a whole by a first insulating body 44, and the second terminal group 42 and the middle plate are held as a whole by a second insulating body 45. The first insulating body 44 and the second insulating body 45 are overmolded with the insulating body 30. In the present application, the insulating body 30 refers to the combination of the first insulating body 44, the second insulating body 45, and the overmolded insulating body 30. The middle plate 43 can be separately provided or integrally formed on the second insulating body 45.

[0044] Each conductive terminal of the first terminal group 41 and the second terminal group 42 comprises a contact portion 411, a holding portion 412 extending backward from the contact portion 411, and a solder leg 413 extending backward from the holding portion 412.

[0045] The insulating body 30 comprises a base 31, a clamping portion 32 formed in front of the base 31, a mating tongue portion 33 extending forward from the clamping portion 32, and a partition portion 34 formed between the base 31 and the clamping portion 32. The space where the partition portion 34 is located is free of plastic. The base 31 and the clamping portion 32 are connected as a whole by the first terminal group 41, the second terminal group 42, and the middle plate 43. The outer diameter of the base 31 is greater than the outer diameter of the clamping portion 32. In particular, the lateral sides of the base 31 extend outward beyond the lateral sides of the clamping portion 32. The outer diameter of the clamping portion 32 is greater than the outer diameter of the mating tongue portion 33. The contact portions 411 of the first terminal group 41 and the second terminal group 42 are respectively exposed to the upper or lower side surface of the mating tongue portion 33. The holding portions 412 are embedded in the insulating body 30. The solder legs 413 extend out of the rear end of the insulating body 30.

[0046] The middle plate 43 is disposed between the first terminal group 41 and the second terminal group 42, and includes a pair of middle plate bodies 431 arranged on both sides in the lateral direction, a clamping groove 432 formed on both sides of the front end of the middle plate body 431 and exposed to the lateral outside of the insulating body 30, and a pair of resisting force arms 433 extending from the rear end of the middle plate body 431 on both sides in the lateral direction. The pair of middle plate bodies 431 are connected together at the front end by a front end connecting portion 435, and are connected together at the rear end by a rear end connecting portion 434, so that the middle plate bodies 431 are integrated to strengthen the strength of the middle plate bodies 431. The middle plate bodies 431 are wrapped in the insulating body 30, and the pair of resisting force arms 433 of the middle plate 43 are wrapped and extended on both sides of the base 31 in the lateral direction. In another embodiment, the middle plate bodies 431 are integral structures, and do not need to be designed as left and right structures.

[0047] The front end face of the base 31 constitutes a resisting end face 311. An injection glue gap 312 communicating with the partition 34 is formed in the middle of the side of the base 31 adjacent to the partition 34 in front, and the lateral width of the injection glue gap 312 is smaller than the lateral width of the clamping portion 32. The injection glue gap 312 is protruded forward in the middle in the vertical direction to form a front protruding portion 313, and the front end face of the front protruding portion 313 does not exceed the resisting end face 311 of the base 31. The rear end connecting portion 434 of the middle plate 43 is partially formed in the front protruding portion 313, and there is a gap between the front end edge of the rear end connecting portion 434 and the rear end face of the clamping portion 32 for the flow of glue. In another embodiment, when the middle plate bodies 431 are integral structures, only a flow hole is needed to be formed by cutting a hole in the middle plate bodies 431 at the position corresponding to the partition 34. It should be noted that the front protruding portion 313 is not a necessary feature, and can be omitted in actual application. The function of the front protruding portion 313 is to reduce the length of the first terminal group 41, the second terminal group 42 and the middle plate 43 in the suspended state, so as to avoid the deformation of the terminals caused by the excessive injection molding or glue pressure, and thus to avoid quality problems. The lateral sides of the front protruding portion 313 are provided with upper and lower through side flow ports 314 for the upward and downward flow of glue.

[0048] Please continue to refer to Figures 2 to 4 , Figure 10 , Figure 11As shown, the metal shell 10 comprises an annular outer body 11, an outer wrapping ring body 14 formed by reverse stretching from the front end of the annular outer body 11, an annular inner body 12 stretched inwardly from the rear end of the annular outer body 11 into the annular outer body 11, a rear wall surface 13 formed at the rear end of the annular outer body 11 and the annular inner body 12, a clamping cavity 121 formed through the annular inner body 12, and a plug-in cavity 111 formed in the annular outer body 11.

[0049] The extension length of the annular outer body 11 is greater than that of the annular inner body 12, the inner diameter of the clamping cavity 121 is adapted to the clamping portion 32 of the plug-in member A, and the inner diameter of the plug-in cavity 111 is greater than that of the clamping cavity 121. The plug-in cavity 111 comprises a first portion 112 located at the front side of the annular inner body 12 and a second portion 113 located between the annular outer body 11 and the annular inner body 12. The rear wall surface 13 has a planar structure. The outer wrapping ring body 14 comprises an extension ring body 141 reverse stretched from the front end of the annular outer body 11 and attached to the outer surface of the annular outer body 11, a folding portion 142 folded along the lateral outer side from the rear end of the extension ring body 141, and a groove 143 formed at the bending position of the extension ring body 141 and the folding portion 142. Sealing rings 23 are arranged on the extension ring body 141 and the folding portion 142, and the sealing rings 23 are formed on the outer wrapping ring body 14 by sleeving or dispensing.

[0050] The metal shell 20 comprises a sleeve shell 21 partially fixed to the annular outer body 11 and a fixed shell 22 fixed to one side of the sleeve shell 21. The sleeve shell 21 has a tubular structure, and comprises a sleeve shell body 211, a sleeve shell cavity 212 passing through the sleeve shell body 211 from front to back, and glue injection holes 213 formed on the upper and lower sides of the rear end of the sleeve shell body 211. The front side of the sleeve shell body 211 is partially sleeved on the outer surface of the annular outer body 11 and fixed together by spot welding, and the rear end of the sleeve shell body 211 partially extends beyond the annular outer body 11, and the glue injection holes 213 are located behind the annular outer body 11. The fixed shell 22 comprises an attached body 221 attached to one side of the sleeve shell body 211 and a fixed leg 222 extending laterally outwardly from the attached body 221, and the attached body 221 is fixed to the surface of the sleeve shell body 211 by spot welding. The attached body 221 is also provided with glue injection holes 223 corresponding to the glue injection holes 213 on one side of the sleeve shell body 211. The fixed shell 22 is used to fix the waterproof USB socket of the present application to a printed circuit board.

[0051] Please refer to Figures 7 to 11 As shown, the assembly method of the waterproof USB socket of the present application is as follows:

[0052] First, the metal outer shell 20 is spot-welded to the metal shell 10, and the sealing ring 16 is formed by applying adhesive to the metal shell 10. Then, the connector A is inserted into the metal shell 10 from back to front along the clamping cavity 121. The mating tongue 33 extends beyond the clamping cavity 121 into the connector cavity 111, and the clamping part 32 is clamped within the clamping cavity 121. The abutting end face 311 of the base 31 abuts against the rear wall surface 13 of the metal shell 10. Upper limit position; at this time, the supporting arm 433 of the middle plate 43 is at least partially located behind the rear wall surface 13 to strengthen the base 31 and provide sufficient limiting force; the partition portion 34 of the connector A and the base 31 are inserted into the housing cavity 212 of the housing 21, the glue injection hole 213 on the housing 211 communicates with the partition portion 34 through the glue injection notch 312 on the base 31, and the front side of the partition portion 34 at least partially penetrates into the clamping cavity 121. Finally, glue is injected into the partition portion 34 from the glue injection holes 213, 223 and cured to form a waterproof glue block 24, the waterproof glue block 24 including a middle portion 241 that partially penetrates into the clamping cavity 121 and an injection portion 242 that fills the glue injection hole 213 and the rest of the partition portion 34.

[0053] The socket of this application achieves good waterproof performance by partially inserting the partition 34 into the clamping cavity 121 and then filling the partition 34 and the inner wall of the clamping cavity 121 with glue. At the same time, the glue fills the space between the partition 34 and the inner wall of the sleeve cavity 212 of the sleeve housing 211 to further enhance the waterproof performance.

[0054] In one embodiment, the partition 34 may not invade the clamping cavity 121. Instead, the lateral sides of the base 31 may be provided with protruding structures that protrude forward to be flush with the rear end face of the clamping part 32. The protruding structures abut against the rear wall 13 of the metal shell 10, thereby enclosing the partition 34 only within the shell cavity 212 of the shell 21 for waterproofing.

[0055] In another embodiment, if the USB socket does not require waterproofing, the partition portion is unnecessary; the base 31 and the clamping portion 32 can be connected as a single unit, and there is no need to inject adhesive to form the waterproof block 24. Furthermore, there is no need to provide an injection notch 312 in the middle of the base 31.

[0056] Please continue reading. Figures 12 to 15 As shown below, the forming method of the metal casing 10 of this application will be described in detail. The method includes the following steps:

[0057] S10, providing such as Figure 12 The metal sheet 80 shown is connected to the strips 71 and 72;

[0058] The metal plate 80 in this step is preferably made of stainless steel and has a circular plate structure. The metal plate 80 is connected to the main strip 71 by a plurality of connecting strips 72, the main strip 71 is arranged around the outer periphery of the metal plate 80, and the main strip 71 is provided with a pulling hole 73. The connecting strips 72 are preferably four connecting strips 72 evenly distributed to connect the circular metal plate 80 to the main strip 71, and the connecting strips 72 have a curved structure to provide a certain buffer space between the metal plate 80 and the main strip 71.

[0059] S20, the metal plate 80 is punched and stretched to form the outer ring body 14;

[0060] In this step, the structure of the outer ring body 14 can be formed by multiple subdivided steps, mainly forming the extension ring body 141, the folded part 142 and the groove 143, etc. The subdivided steps mainly include, first, extruding and punching to form the folded part 142 and the groove 143, at the same time, the outer edge of the folded part 142 is connected to the metal plate 80, and then the middle part of the folded part 142 is stretched forward to form the extension ring body 141. When the extension ring body 141 is formed, the front end of the extension ring body 141 is in a closed state and a stretching front plate 81 is formed.

[0061] S30, the stretching front plate 81 is stretched backward to form the annular outer main body 11;

[0062] In this step, the stretching front plate 81 is stretched backward along the inner side of the outer ring body 14, the length of the stretching is greater than the length of the outer ring body 14 and forms the annular outer main body 11, and the rear end of the annular outer main body 11 is closed to form a stretching rear plate 82.

[0063] S40, the stretching rear plate 82 is further stretched forward to form the annular inner main body 12;

[0064] In this step, the front end face of the annular inner main body 12 also forms a closing plate, at this time, the closing plate needs to be cut off to make the annular inner main body 12 through from front to back to form a clamping cavity 121.

[0065] The forming method of the metal shell of the present application is formed by a stretching process, and the only disadvantage of this method is that the thickness of the outer ring body 14 is slightly larger than the thickness of the annular outer main body 11, and the thickness of the annular outer main body 11 is slightly larger than the thickness of the annular inner main body 12.

[0066] The metal shell, the forming method of the metal shell and the waterproof USB socket of the application manufacture the metal shell 10 through a stretching process, make the metal shell 10 form an annular outer main body 11, stretch from the rear end of the annular outer main body 11 to form an annular inner main body 12, and stretch from the outer edge of the annular outer main body 11 to form an outer package ring body 14, and the plug-in part A is directly inserted into the clamping cavity 121 in the annular inner main body 12. Then, the partition part 34 of the plug-in part A is placed into the sleeve cavity of the sleeve 21 sleeved on the rear end of the annular outer main body 11, and the sleeve 21 is provided with a glue injection hole to communicate with the partition part 34 to form a waterproof waterproof glue block 24.

[0067] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0068] The above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A metal structural component, characterized in that, The device includes a metal housing and a sleeve fixed to the metal housing. The metal housing includes a tubular annular outer body, an outer ring extending backward from the front end of the annular outer body, an annular inner body extending forward from the rear end of the annular outer body, a clamping cavity penetrating the annular inner body, an insertion cavity formed within the annular outer body, and a rear wall connecting the annular outer body and the annular inner body. The sleeve is hollow, forming a sleeve cavity. The front part of the sleeve is fitted onto the surface of the annular outer body and spot-welded, and the rear part of the sleeve extends backward beyond the rear wall.

2. The metal structural component as described in claim 1, characterized in that, The metal shell is manufactured by a stretching process. The walls of the annular outer body, the annular inner body, and the outer ring are all seamless. The inner diameter of the clamping cavity is smaller than the inner diameter of the insertion cavity. The annular inner body is located inside the insertion cavity and its front end does not extend beyond the annular outer body. The insertion cavity includes a first part located in front of the annular inner body and a second part located between the annular outer body and the annular inner body.

3. The metal structural component as described in claim 2, characterized in that, The outer ring body includes an extended ring body that is stretched backward from the front end of the annular outer body and attached to the outer surface of the annular outer body, a folded portion that is folded outward from the rear end of the extended ring body, and a groove formed at the bend of the extended ring body and the folded portion. The extended ring body and the folded portion are provided with sealing rings.

4. A socket, characterized in that, The device includes a metal structural member as described in claim 1 and a connector sleeved within the metal structural member. The connector includes a terminal group and an insulating body that holds the terminal group together. The insulating body includes a base, a clamping portion formed on the front side of the base, and a mating tongue extending forward from the clamping portion. Each conductive terminal of the terminal group includes a contact portion exposed on the surface of the mating tongue, a retaining portion extending rearward from the contact portion and embedded in the insulating body, and a solder leg extending rearward from the retaining portion out of the base. The connector is inserted into the metal housing from the rear, the clamping portion is clamped in the clamping cavity, the outer diameter of the base is larger than the outer diameter of the clamping portion, the front end face of the base forms an abutting end face against the rear wall surface, and the base is at least partially inserted and fixed into the housing cavity.

5. The socket as described in claim 4, characterized in that, The metal structural component also includes a fixed outer shell fixed to one side surface of the housing. The fixed outer shell includes a bonding body welded to the surface of the housing and fixed feet extending laterally from both sides of the bonding body. The fixed feet are used to fix the socket to the printed circuit board.

6. The socket as described in claim 5, characterized in that, A partition is formed between the base of the insulating body and the clamping part. The base and the clamping part are connected as one unit through the terminal group. The partition at least partially penetrates into the clamping cavity, so that the partition is at least partially surrounded by the clamping cavity.

7. The socket as described in claim 6, characterized in that, The upper and lower sides of the housing are provided with glue injection holes that connect to the partition. Waterproof glue is injected into the partition through the glue injection holes, and the waterproof glue fills the partition and adheres to the inner wall of the clamping cavity to achieve waterproofing.

8. The socket as described in claim 6, characterized in that, The base of the insulating body is provided with glue injection notches on the upper and lower sides, which are connected to the partition. The glue injection notches are formed by recessing from the front end face of the base. The upper and lower sides of the sleeve are provided with glue injection holes corresponding to the glue injection notches. Waterproof glue is injected from the glue injection holes into the glue injection notches and the partition. The waterproof glue fills the partition and adheres to the inner wall of the clamping cavity to achieve waterproofing.

9. The socket as described in claim 8, characterized in that, The injection notch protrudes forward in the middle to form a forward protrusion. The front end of the forward protrusion does not extend beyond the supporting end face of the base. The forward protrusion is mainly used to increase the wrapping of the terminal group. The forward protrusion has side flow ports on both sides to facilitate the flow of waterproof adhesive.

10. The socket as claimed in claim 9, characterized in that, The waterproof adhesive fills the partition and then cures to form a waterproof adhesive block. The waterproof adhesive block includes a middle part that at least partially penetrates the clamping cavity and an injection part that extends outward from the middle part. The fixed outer shell is provided with a corresponding injection hole at the position of the injection hole of the sleeve.

11. The socket as claimed in claim 4, characterized in that, The terminal group includes a first terminal group, a second terminal group arranged in two rows in the vertical direction, and a middle plate placed between the first terminal group and the second terminal group. The first terminal group, the second terminal group and the middle plate are held together by the insulating body.

12. The socket as claimed in claim 11, characterized in that, The middle plate includes a middle plate body, a snap-fit ​​groove formed on the front ends of both sides of the middle plate body and exposed on the outer surface of the mating tongue, and a retaining arm extending from the rear end of the middle plate body to both sides into the base. The lateral width of a pair of retaining arms is greater than the lateral width of the clamping cavity.

13. The socket as claimed in claim 12, characterized in that, Viewed from the front and rear directions, the supporting arm at least partially overlaps with the rear wall surface. The middle plate body includes two pieces arranged on the lateral sides. The two middle plate bodies are connected as one unit at the front and rear ends by the front end connecting part and the rear end connecting part, respectively. The supporting arm extends from the middle plate bodies on the lateral sides of the rear end connecting part.

Images