Power socket

Abstract

A power socket comprises an insulation body and a conductive terminal integrally formed in the insulation body, the insulation body comprises a base part, an insertion part formed by extending forwards from the base part, a front cavity formed in the insertion part, a rear cavity formed in the base part and a partition plate for separating the front cavity and the rear cavity, the conductive terminal is integrally formed on the partition plate, the conductive terminal comprises a wrapped part fixedly held in the partition plate, a plug-in part extending into the front cavity from the wrapped part and a riveting tail part extending into the rear cavity from the wrapped part, and a tooth structure is arranged on the peripheral surface of the wrapped part. The tooth structure is wrapped by the separator plate. The conductive terminal of the power socket is relatively high in torsion resistance.

Description

Technical Field

[0001] The present application relates to the field of electrical connectors, and in particular to a power socket. Background Art

[0002] Patent application No. 202222876113.0 of the People's Republic of China discloses a power socket, which includes a base provided with a partition, a pin (i.e., a conductive terminal) integrally formed or inserted into the partition, a Z-shaped terminal connected to the tail of the pin, and a rivet connection plate and a ground connection plate riveted to the lateral sides of the base. As can be seen from the drawings of the patent, the pin includes a docking portion docking with a docking plug, a fixed portion fixed in the partition, and a tail connected to the Z-shaped terminal, and the fixed portion is assembled or integrally formed on the partition in a circular structure. The Z-shaped terminal includes a hole sleeved on the tail, and the Z-shaped terminal is then welded to the pin by spot welding. The Z-shaped terminal disclosed in the patent is welded to a printed circuit board through a solder foot, but in some applications, the Z-shaped terminal can be used to connect a cable, which is then welded to a printed circuit board through the cable.

[0003] When excessive torque is applied between the fixing portion of the pin and the partition, the pin may rotate relative to the socket on the partition, posing a safety risk and requiring enhanced torsion resistance. The connecting piece is fixed to the pin via spot welding, which results in high costs and low manufacturing efficiency. Cables are typically soldered by stripping the wire sheath and inserting the core into the solder hole of a printed circuit board. Before automated wave soldering, a robot inserts the cable core into the solder hole on the printed circuit board. The cable then undergoes flux spraying, multiple preheating steps, thermal compensation, and wave soldering. Because the cable ends are relatively light, they are affected by the spraying force, heat waves from rising temperatures, and transmitted vibrations during these processes, which can easily cause the core to detach or shift, leading to problems such as desoldering, missing solder joints, or poor soldering. Utility Model Content

[0004] In view of this, it is necessary to provide a power socket with conductive terminals having high torsional resistance.

[0005] In order to solve the above technical problems, the present application provides a power socket, comprising an insulating body and a conductive terminal integrally formed in the insulating body, the insulating body comprising a base, an insertion portion extending forward from the base, a front cavity formed in the insertion portion, a rear cavity formed in the base, and a partition separating the front cavity and the rear cavity, the conductive terminal being integrally formed on the partition, the conductive terminal comprising a wrapped portion fixed in the partition, a mating portion extending from the wrapped portion into the front cavity, and a riveted tail extending from the wrapped portion into the rear cavity, the outer peripheral surface of the wrapped portion being provided with a tooth structure, and the tooth structure being wrapped by the partition.

[0006] Preferably, the wrapped portion includes a front fixing protrusion ring, a rear fixing protrusion ring and a filling space located between the front fixing protrusion ring and the rear fixing protrusion ring, and the outer diameters of the front fixing protrusion ring and the rear fixing protrusion ring are larger than the outer diameter of the plug-in portion of the conductive terminal.

[0007] Preferably, the distance between the front end face of the front fixing convex ring and the rear end face of the rear fixing convex ring is consistent with the thickness of the partition, and the front end face of the front fixing convex ring is exposed in the front cavity, and the rear end face of the rear fixing convex ring is exposed in the rear cavity.

[0008] Preferably, the tooth structure is provided on the outer peripheral surface of the front fixed convex ring and / or the rear fixed convex ring.

[0009] Preferably, the rivet tail is cut to form a sheet-like structure, and preferably the rivet tail is divided into four parts by a cross-shaped cut.

[0010] Preferably, the power socket also includes a connecting piece riveted on the riveted tail, the connecting piece includes a sheet body provided with a perforation and a cable connection portion formed by bending and extending horizontally from one side of the sheet body, the sheet body is sleeved on the riveted tail through the perforation, and the groove of the riveted tail is squeezed by a rivet head to expand the four parts of the riveted tail radially outward to make the sheet body close to the rear end face of the rear fixing convex ring, and the sheet body is conductive with the rear end face of the rear fixing convex ring.

[0011] Preferably, the power socket further comprises a cable riveted to the cable connecting portion, the cable comprising a wire core and an outer layer wrapping the wire core, and the wire core at one end of the cable is electrically connected to the conductive terminal through the connecting piece.

[0012] Preferably, the partition is located on one side of the rear cavity and is provided with a sheet accommodating groove for accommodating the sheet, and the sheet accommodating groove is surrounded by protrusions to form limiting protrusions for limiting the sheet, and an avoidance groove is formed above the sheet accommodating groove to avoid the cable connection part.

[0013] Preferably, the power socket is connected to a printed circuit board through the cable, a fixing seat is fixed on the printed circuit board, the power socket is fixed on the fixing seat, and the wire core at the other end of the cable is welded to the printed circuit board.

[0014] Preferably, the fixing seat includes a shell and a accommodating cavity that passes through the shell longitudinally, the shell includes a front end and a rear end, the accommodating cavity is opened in the front end, the upper side of the rear end is open, the insertion portion of the insulating body is inserted forward into the accommodating cavity, and the base is supported on the upper side of the rear end.

[0015] The power socket of this application utilizes front and rear fixing rings on the wrapped portion of the conductive terminal, and employs a toothed structure on the outer circumference of each ring to effectively enhance the bonding strength and torsional resistance between the conductive terminal and the partition of the insulating body. Furthermore, by dividing the riveted tail of the conductive terminal into a sheet-like structure and securing the connecting piece to the riveted tail by riveting, manufacturing efficiency is significantly improved and costs are reduced compared to existing spot welding methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A three-dimensional composite diagram of the power socket of this application mounted on a printed circuit board;

[0018] Figure 2 A perspective view of the power socket for this application;

[0019] Figure 3 A perspective view of the power socket for this application without the fixing base;

[0020] Figure 4 For the Figure 2 A cross-sectional view taken along the dashed line AA is shown;

[0021] Figure 5 This is a three-dimensional diagram of the conductive terminals of the power socket of this application being formed on the insulating body;

[0022] Figure 6 A three-dimensional assembly diagram of the conductive terminal, connecting piece, cable and wire clamp of the power socket of this application;

[0023] Figure 7 A three-dimensional diagram of the conductive terminal and connecting piece of the power socket of this application;

[0024] Figure 8 This is a three-dimensional diagram of the cable clamp of the present application being fixed on the cable;

[0025] Figure 9 A three-dimensional diagram of the wire clamp of this application;

[0026] Figure 10 This is a schematic diagram of the application of the cable clip to insert the cable on the printed circuit board, that is, along the Figure 1 A cross-sectional view taken along the dotted line BB is shown.

[0027] Description of Reference Numerals

[0028] Printed circuit board 10; solder hole 11; fixing seat 20; housing 21; front end 211; rear end 212; accommodating cavity 22; power socket 30; insulating body 31; base 311; inserting portion 312; front cavity 313; rear cavity 314; sheet accommodating groove 3141; limiting protrusion 3142; avoidance groove 3143; partition 315; fixing plate 316; conductive terminal 32; plug-in portion 321; front fixing protrusion 322; rear fixing protrusion 323; filling space 324; riveted tail 3 25; tooth structure-326; wrapped part-327; cable-33; wire core-331; outer sheath-332; heat shrink tube-333; connecting piece-34; sheet body-341; cable connecting part-342; wire core riveted part-343; sheath riveted part-344; wire clamp-40; base-41; first base-411; second base-412; third base-413; first clamping part-42; first core wire clamp-421; lower clamping part-422; second clamping part-43; second core wire clamp-431; upper clamping part-432; sheath clamping part-44. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions and advantages of this application more clear, the technical solutions of this application will be described clearly and completely below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0030] See also Figure 1 、 Figure 2 、 Figure 10 As shown, the power socket 30 of the present application is fixed on the printed circuit board 10, and a fixing base 20 is fixed on the printed circuit board 10. The power socket 30 is fixed to the printed circuit board 10 through the fixing base 20. The power socket 30 includes a cable 33 and is connected to the printed circuit board 10 through the cable 33.

[0031] The printed circuit board 10 is provided with a solder hole 11 for connecting the cable 33. The fixing base 20 includes a housing 21 and a receiving cavity 22 extending longitudinally through the housing 21. The housing 21 includes a front end 211 and a rear end 212. The front end 211 is an annular cylindrical structure, and the receiving cavity 22 is located within the front end 211. The rear end 212 is open on its upper side and has a planar structure. The surface of the rear end 212 is flush with the bottom surface of the receiving cavity 22.

[0032] Please continue reading Figures 3 to 7 As shown, the power socket 30 includes an insulating body 31, a conductive terminal 32 integrally formed in the insulating body 31, a connecting piece 34 riveted to the conductive terminal 32, and a cable 33 with two ends respectively connected to the connecting piece 34 and the printed circuit board 10.

[0033] The insulating body 31 includes a base 311, an insertion portion 312 extending forward from the base 311, a front cavity 313 formed in the insertion portion 312 and open at the front end, a rear cavity 314 formed in the base 311 and open at the rear end, and a partition 315 separating the front cavity 313 and the rear cavity 314.

[0034] The outer diameter of the base 311 is larger than the outer diameter of the insertion portion 312. The insertion portion 312 is sized to fit within the accommodating cavity 22 of the fixing base 20. The base 311 is supported by the rear end 212 of the fixing base 20. A fixing tab 316 extends rearward from the bottom of the base 311. The insertion portion 312 of the insulating body 31 is inserted into the accommodating cavity 22 of the fixing base 20 to secure it. The fixing tab 316 at the rear end of the base 311 is attached to and screwed onto the fixing base 20 or printed circuit board 10.

[0035] The conductive terminal 32 is integrally injection molded on the partition 315 , and the conductive terminal 32 includes a wrapped portion 327 wrapped in the partition 315 , a plug-in portion 321 extending forward from the wrapped portion 327 into the front cavity 313 , and a riveted tail portion 325 extending backward from the wrapped portion 327 into the rear cavity 314 .

[0036] The inserting portion 321 is cylindrical and connects to the plug. The encased portion 327 protrudes radially outward in the fore-aft direction, forming a front fixing protrusion 322 and a rear fixing protrusion 323. A filling space 324 is formed between the front fixing protrusion 322 and the rear fixing protrusion 323. The distance between the front end of the front fixing protrusion 322 and the rear end of the rear fixing protrusion 323 is consistent with the thickness of the partition 315. The outer circumference of the front fixing protrusion 322 and / or the rear fixing protrusion 323 is provided with a tooth structure 326 or other non-circular structure.

[0037] The outer periphery of the tooth structure 326 or other non-circular structure is encased in plastic by the spacer 315, effectively preventing rotational displacement between the conductive terminal 32 and the insulating body 31 due to external forces. The tooth structure 326 can be located on either the front fixing protrusion 322 or the rear fixing protrusion 323. In this embodiment, the outer diameters of both the front fixing protrusion 322 and the rear fixing protrusion 323 are greater than the outer diameter of the interposition portion 321.

[0038] In one embodiment, the outer diameter of the wrapped portion 327 can be designed to be smaller than the outer diameter of the inserting portion 321 to produce a step to replace the front fixing protrusion 322, and a non-smooth surface or tooth structure 326 can be provided on the surface of the wrapped portion 327 to replace the front fixing protrusion 322 and the tooth structure thereon in the aforementioned scheme.

[0039] In one embodiment, the outer diameter of the wrapped portion 327 can be reduced at the corresponding position of the conductive terminal 32 so that a depression is formed in the middle position of the wrapped portion 327 to correspond to the filling space 324 , and the tooth structure 326 can be set at the front or rear end of the filling space 324 .

[0040] When the partition 315 of the insulating body 31 is injection molded, the plastic fills the filling space 324 and wraps the tooth structure. The front fixing protrusion 322 and the rear fixing protrusion 323 are confined to the front and rear sides of the plastic in the filling space 324 in the front and rear directions to achieve a stable structure.

[0041] The riveted tail 325 is designed to be a forked structure to facilitate subsequent riveting processing. The riveted tail 325 is preferably separated into a four-piece structure, that is, a cross-shaped groove is formed in the middle. During subsequent riveting, a conical riveting head is used to press the center of the groove of the riveted tail 325 forward, so that the tail of the riveted structure is separated outward to achieve riveting.

[0042] The cable 33 includes a core 331 and an outer sheath 332 wrapped around the core 331. A heat shrink tube 333 is also retained outside the cable 33. The heat shrink tube 333 heats and shrinks the cable 33 and the connecting piece 34 connected to the cable 33 after the cable 33 is connected.

[0043] The connecting piece 34 is generally L-shaped and includes a sheet 341 with perforations (not numbered) and a cable connection portion 342 formed by a vertical bend from one side of the sheet 341. The cable connection portion 342 includes a core riveting portion 343 and a cladding riveting portion 344 formed at the rear end of the core riveting portion 343. The core riveting portion 343 and the cladding riveting portion 344 respectively rivet the core 331 and the outer cladding 332. The specific structure of the cable connection portion 342 is conventional and will not be further described here.

[0044] The side of the partition 315 of the insulating body 31 exposed to the rear cavity 314 is formed with a sheet-receiving groove 3141 located on the periphery of the riveted tail 325 to accommodate the sheet 341, a plurality of limiting protrusions 3142 formed on the periphery of the sheet-receiving groove 3141 and supporting the periphery of the sheet 341, and an escape groove 3143 located above and communicating with the sheet-receiving groove 3141. The escape groove 3143 is used to avoid the cable connection portion 342.

[0045] After the conductive terminal 32 is in-molded with the insulating body 31, the connecting piece 341, to which the cable 33 is riveted, is inserted outside the riveted tail 325. Initially, the outer diameter of the riveted tail 325 is not expanded and is in the shape of a regular cylinder. After the connecting piece 34 is installed, the riveted tail 325 is pressed forward by the riveting head, causing it to split into multiple pieces and expand radially outward, thereby tightly fixing the piece 341 to the riveted tail 325. At this point, the piece 341 is pressed and tightly adhered to the end surface of the rear fixing ring 322, achieving electrical conduction.

[0046] The power socket of this application effectively strengthens the bonding and torsional resistance between the conductive terminal 32 and the partition 315 of the insulating body 31 by designing a front fixing protrusion 322 and a rear fixing protrusion 323 on the wrapped portion 327 of the conductive terminal 32, and designing a tooth structure 326 on the outer circumference of the front fixing protrusion 322 or the rear fixing protrusion 323. Furthermore, by dividing the riveted tail 325 of the conductive terminal 32 into a sheet-like structure and fixing the connecting piece 34 to the riveted tail 325 by riveting, manufacturing efficiency can be effectively improved and costs can be reduced compared to the existing method of fixing by spot welding.

[0047] Please continue reading Figures 8 to 10As shown, the wire clamp 40 of the present application includes a base 41 extending in the vertical direction, a first clamping portion 42 provided at the lower end of the base 41, a second clamping portion 43 provided in the middle of the base 41, and a cladding clamping portion 44 provided at the upper part of the base 41.

[0048] The base 41 includes a first base 411 at the bottom, a second base 412 extending from the top of the first base 411 and bending inward, and a third base 413 extending vertically upward from the top of the second base 412 .

[0049] The first clamping portion 42 includes a first core clamp 421 bent from both lateral sides of the lower end of the first base 411, and a lower clamping portion 422 extending obliquely from the upper side of the first core clamp 421. The second clamping portion 43 includes a second core clamp 431 bent from both lateral sides of the upper end of the first base 411, and an upper clamping portion 432 extending from the upper side of the second core clamp 421. The cladding clamping portion 44 is formed by bending from both lateral sides of the third base 413.

[0050] The first core wire clamp 421 and the second core wire clamp 431 are both used to rivet and conduct the core wire 331 of the cable 33. The cladding clamping portion 44 is used to rivet and secure the outer cladding 332 of the cable 33. The lower clamping portion 422 is tilted outward, and the upper clamping portion 432 is preferably horizontal and located above the lower clamping portion 422. There is a certain distance between the lower clamping portion 422 and the upper clamping portion 432.

[0051] In one embodiment, only one of the first core wire clamp 421 and the second core wire clamp 431 needs to be retained.

[0052] In another embodiment, the first clamping portion 42 is not formed by extending from both sides of the first base 411, but the lower clamping portion 422 of the first clamping portion 42 is formed by extending downward from the second core clamp 431 and then tearing and extending obliquely outward. However, this embodiment has the problem of insufficient stability.

[0053] Please refer to Figure 10As shown, the cable clamp 40 of the present application cooperates with the printed circuit board 10. After the cable 33 is riveted and fixed to the cable clamp 40, that is, the core 331 of the cable 33 is riveted and fixed to the first core clamp 421 and / or the second core clamp 431, and the outer sheath 332 of the cable 33 is riveted and fixed to the sheath clamping portion 44, the cable clamp 40 drives the core 331 of the cable 33 downwardly into the soldering hole 11 of the printed circuit board 10. At this time, the lower clamping portion 422 is first compressed, and then after passing through the soldering hole 11, it springs outward and abuts against the lower surface of the printed circuit board 10, while the upper clamping portion 432 directly abuts against the upper surface of the printed circuit board 10. In this way, the problem of the core 331 falling off or shifting due to external force during soldering, resulting in soldering leaks, can be avoided.

[0054] The wire clamp 40 of the present application fixes the cable 33 by riveting, and then pre-fixes the wire core 331 to the welding hole 11 of the printed circuit board 10 through the lower clamping portion 422 and the upper clamping portion 432 of the wire clamp 40, which can effectively avoid the problem of welding leaks caused by the wire core 331 being detached or shifted due to external force during the welding process.

[0055] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A power socket, comprising an insulating body and a conductive terminal integrally formed in the insulating body, wherein the insulating body comprises a base, an insertion portion extending forward from the base, a front cavity formed in the insertion portion, a rear cavity formed in the base, and a partition separating the front cavity and the rear cavity, wherein the conductive terminal is integrally formed on the partition, characterized in that: The conductive terminal includes a wrapped portion held in the partition, an inserting portion extending from the wrapped portion into the front cavity, and a riveted tail portion extending from the wrapped portion into the rear cavity. A tooth structure is provided on the outer peripheral surface of the wrapped portion, and the tooth structure is wrapped by the partition.

2. The power socket according to claim 1, wherein: The wrapped portion includes a front fixing protrusion ring and a rear fixing protrusion ring protruding on the front and rear sides, and a filling space located between the front fixing protrusion ring and the rear fixing protrusion ring. The outer diameters of the front fixing protrusion ring and the rear fixing protrusion ring are larger than the outer diameter of the plug-in portion of the conductive terminal.

3. The power socket according to claim 2, wherein: The distance between the front end face of the front fixing convex ring and the rear end face of the rear fixing convex ring is consistent with the thickness of the partition plate, and the front end face of the front fixing convex ring is exposed in the front cavity, and the rear end face of the rear fixing convex ring is exposed in the rear cavity.

4. The power socket according to claim 2, wherein: The tooth structure is provided on the outer peripheral surface of the front fixed convex ring and / or the rear fixed convex ring.

5. The power socket according to claim 2, wherein: The rivet tail is cut to form a sheet structure, and the rivet tail is divided into four parts by a cross-shaped cut groove.

6. The power socket according to claim 5, wherein: The power socket also includes a connecting piece riveted on the riveted tail, the connecting piece includes a sheet body with a perforation and a cable connection portion formed by bending and extending horizontally from one side of the sheet body, the sheet body is sleeved on the riveted tail through the perforation, and the groove of the riveted tail is squeezed by a rivet head to expand the four parts of the riveted tail radially outward to make the sheet body close to the rear end face of the rear fixing convex ring, and the sheet body is conductively connected to the rear end face of the rear fixing convex ring.

7. The power socket according to claim 6, wherein: The power socket further includes a cable riveted to the cable connecting portion, the cable including a wire core and an outer sheath wrapping the wire core, and the wire core at one end of the cable is electrically connected to the conductive terminal through the connecting piece.

8. The power socket according to claim 6, wherein: The partition is located on one side of the rear cavity and is provided with a sheet accommodating groove for accommodating the sheet. The sheet accommodating groove is protruded around to form limiting protrusions for limiting the sheet. The sheet accommodating groove is also connected above to form an avoidance groove for avoiding the cable connection part.

9. The power socket according to claim 8, wherein: The power socket is connected to a printed circuit board through the cable. A fixing seat is fixed on the printed circuit board. The power socket is fixed on the fixing seat. The wire core at the other end of the cable is welded to the printed circuit board.

10. The power socket according to claim 9, wherein: The fixing seat includes a shell and a accommodating cavity that passes through the shell longitudinally. The shell includes a front end and a rear end. The accommodating cavity is opened in the front end, and the upper side of the rear end is open. The insertion portion of the insulating body is inserted forward into the accommodating cavity, and the base is supported on the upper side of the rear end.

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