plug connector

Abstract

A plug connector includes an inner space, a rotating seat pivotally connected to the inner space, a fixed gear fixed in the rotating seat, a sliding member accommodated in the rotating seat and having a rack structure on a surface thereof, a telescopic terminal combined with the sliding member, an internal gear arranged in the rotating seat and engaged with the fixed gear, and a transmission gear coaxially arranged in the internal gear and engaged with the rack structure. When the rotating seat is rotated and pivotally connected to the inner space, the telescopic terminal is telescopically extended or retracted in the rotating seat by displacement of the sliding member, so as to facilitate storage. At least one compression elastic member is connected between the rotating seat and the sliding member, and the rotating seat is positioned at a position in a use state or a storage state by elastic restoring force of the compression elastic member.

Description

Technical Field

[0001] This utility model relates to a plug connector, and more particularly to a plug connector with good stability and retractable terminals for easy storage. Background Technology

[0002] With the development of electronic technology, plug connectors are widely used in various electronic devices. By plugging the plug connector of an electronic device into a wall socket or extension cord socket, power is supplied to the electronic device.

[0003] For ease of storage and portability, existing plug connectors feature foldable storage. For example, Utility Model Patent Publication No. 219659059 discloses a press-lock assembly for a foldable plug mechanism, comprising a mounting base, two movable seats movably disposed on the mounting base, and at least one first return spring abutting against the movable seats. The mounting base has a folding groove to accommodate a plug assembly. Each of the two movable seats has a locking hook, and the movable seats are connected to a pressing handle extending to the outside of the mounting base. When the plug assembly is folded and accommodated within the folding groove, the elastic force of the first return spring causes relative displacement of the movable seats. At this time, the locking hooks engage the prongs of the plug assembly, thereby positioning and securing the plug assembly. When it is necessary to unfold the plug assembly, pressing the pressing handle inward brings the two movable seats closer together and compresses the first return spring. At this time, the prongs of the plug assembly disengage from the locking hooks, causing the plug assembly to pop out of the folding groove. However, while this structural design can achieve the purpose of convenient storage, the locking hook structure is prone to deformation or even breakage, and the plug assembly lacks a retractable structure. After being folded and stored, the plug may be exposed outside the folding slot, thus affecting the storage convenience of the plug connector.

[0004] Given the above shortcomings, it is necessary to provide a plug connector with good stability and retractable terminals for easy storage. Summary of the Invention

[0005] The purpose of this invention is to provide a plug connector, and more particularly to a plug connector with good stability and retractable terminals for easy storage.

[0006] To overcome the shortcomings of existing technologies, this utility model discloses a plug connector, comprising: a housing; a rotating base with a slide rail; a pivot shaft connecting the housing and the rotating base, wherein the extension direction of the slide rail is orthogonal to the pivot shaft; a fixed gear disposed on the housing and coaxially with the pivot shaft; an internal gear pivotally connected to the rotating base and meshing with the fixed gear; an external gear coaxially disposed on the internal gear and pivotally connected to the rotating base; a sliding member slidably disposed on the slide rail; a rack structure extending from the surface of the sliding member and meshing with the external gear; and at least one telescopic terminal, one end of which is fixed to the rotating base and the other end to the sliding member, to change the length of the telescopic terminal as the sliding member slides. And at least one compression elastic element, one end of which is pivotally connected to the rotating seat, and the other end of which is pivotally connected to the sliding element. Specifically, when the sliding element is located at either end of the slide rail, the compression displacement of the compression elastic element is small. When the sliding element is located at the center of the slide rail, the compression displacement of the compression elastic element is large.

[0007] Furthermore, the external gear has a first external gear and a second external gear symmetrically disposed on both sides of the internal gear, and the rack structure has a first rack and a second rack disposed parallel to each other on both sides of the sliding member, the first rack meshing with the first external gear, and the second rack meshing with the second external gear.

[0008] Furthermore, it also includes a base plate housed in the outer casing, a gear seat disposed inside the rotating seat, and a drive shaft connected to the gear seat. The internal gear and the external gear are disposed on the drive shaft. An extension portion extends from the surface of the base plate into the interior of the rotating seat. The fixed gear is disposed at the front end of the extension portion. The sliding member has a connecting shaft at the end away from the fixed gear. A fixed shaft is disposed on the inner wall of the rotating seat. The two ends of the compression elastic member are respectively pivotally connected to the connecting shaft and the fixed shaft.

[0009] Furthermore, the gear seat includes a top wall, a pair of side walls extending vertically to both sides of the top wall, and a connecting plate extending from the side edge of the top wall. The fixed shaft is disposed at the end of the connecting plate. The side walls have a pair of through holes for connecting the drive shaft. The inner surface of the top wall is recessed to form a groove and a recess aligned front to back to avoid the internal gear and the fixed gear. The top wall also has a pair of clearance grooves located on both sides of the groove to accommodate the external gear. The inner surface of the rotating seat extends to form a pair of reinforcing ribs flush with the side walls. At least one slot is formed on the reinforcing ribs. At least one locking block protrudes from the side wall and engages with the slot.

[0010] Furthermore, the slider includes a terminal block, a sliding plate extending from the rear end of the terminal block and housed within the gear seat, and a pair of flat-surfaced support members disposed on both sides of the terminal block. The rack structure extends from the surface of the sliding plate. The gear seat includes a pair of support arms extending forward from the front end of the sidewall and abutting against the support members. The connecting plate and the fixed shaft are located between the support arms. The connecting shaft extends from the front end of the sliding plate and is located between the support members.

[0011] Furthermore, the telescopic terminal includes a mating portion that is coupled to the terminal block, a contact portion that is coupled to the rear end of the mating portion and fixed on the rotating base, and an elastic member that is housed inside the contact portion and sleeved on the mating portion. The plug connector also includes at least one conductive spring piece disposed on the substrate and in contact with the contact portion.

[0012] Furthermore, a stop member is formed at each end of the connecting shaft, and the outer diameter of the stop member is larger than the outer diameter of the connecting shaft. A stop portion is formed at each end of the fixed shaft, and the outer diameter of the stop portion is larger than the outer diameter of the fixed shaft.

[0013] Furthermore, the surface of the slider protrudes to form a set of sliders connected to the slide rail, the sliders being located on one side relative to the rack structure.

[0014] Furthermore, the inner and outer surfaces of the extension are respectively formed with downwardly inclined and parallel guide surfaces. The interior of the rotating seat is provided with a mounting groove, and the opening of the mounting groove extends to the rear end of the rotating seat. The opening of the mounting groove is recessed inward to form two notches. The inner surface of each notch has an inwardly inclined engagement surface. The engagement surfaces of the two notches face each other symmetrically, and the extension engages in one of the notches. The engagement surface is set to align with the guide surface.

[0015] Furthermore, the outer casing has a shell and a cover that engages with the shell. The shell and the cover together define an internal space. The internal space is recessed inward from one side of the cover. The internal space has a bottom plate covering one side of the shell and two side plates extending from the bottom plate and located on opposite side walls of the cover. The bottom plate has an assembly groove communicating with the internal space. The two sides of the assembly groove extend outward to form a pair of slots cutting through the side plates. The pivot shaft is pivotally connected to the slots. The base plate is engaged in the assembly groove. A pair of assembly blocks extend outward from the outer edge of the base plate. The assembly blocks engage with the slots and block one side of the pivot shaft.

[0016] In summary, this utility model provides a plug connector comprising a housing, an internal space recessed inward from one side of the housing, a rotating seat pivotally connected to the internal space, a fixed gear fixed inside the rotating seat, a sliding member housed in the rotating seat, a rack structure protruding from the surface of the sliding member, a telescopic terminal engaged with the sliding member, an internal gear disposed inside the rotating seat and meshing with the fixed gear, and an external gear coaxially disposed on the internal gear and meshing with the rack structure. By rotating the internal gear relative to the fixed gear, the external gear rotates and meshes with the rack structure, causing relative displacement of the sliding member and extending / retracting the telescopic terminal within the rotating seat, thus achieving convenient storage. At least one compression elastic member connects the rotating seat and the sliding member, and the elastic restoring force of the compression elastic member allows the rotating seat to be positioned in both a used state and a stored state. Attached Figure Description

[0017] Figure 1 This is a perspective view of the plug connector of this utility model.

[0018] Figure 2 This is a perspective view of the plug connector of this utility model in its stored state.

[0019] Figure 3 This is an exploded view of the plug connector of this utility model.

[0020] Figure 4 This is an exploded view of the rotating base of the plug connector of this utility model.

[0021] Figure 5 This is another exploded view of the rotating seat of the plug connector of this utility model.

[0022] Figure 6 The rotating seat edge of the plug connector of this utility model Figure 1 Partial three-dimensional cross-section of line II.

[0023] Figure 7 This is a partial exploded view of the plug connector of this utility model.

[0024] Figure 8 This is a perspective view of the sliding component of the plug connector of this utility model.

[0025] Figure 9 This is a schematic diagram showing the rotation direction of the plug connector of this utility model from the storage state to the use state.

[0026] Figure 10 This utility model plug connector is along Figure 1 A cross-sectional view of line II.

[0027] Figure 11 This is a schematic diagram showing the rotation direction of the plug connector of this utility model from the use state to the storage state.

[0028] Figure 12 This utility model plug connector is along Figure 2 A cross-sectional view of line II-II.

[0029] Figure 13 This is an exploded view of the sliding component and telescopic terminal of the plug connector of this utility model.

[0030] Figure 14 This is an exploded view of the substrate, conductive spring, and fixing base of the plug connector of this utility model.

[0031] Figure 15 This is a perspective view of the gear seat of the plug connector of this utility model.

[0032] Figure 16 This is another perspective view of the gear seat of the plug connector of this utility model.

[0033] Figure 17 This is a partial perspective view of the plug connector of this utility model.

[0034] Figure 18 This is a perspective view of the cover of the plug connector of this utility model.

[0035] Figure 19 This is a perspective view of the housing of the plug connector of this utility model. Detailed Implementation

[0036] To illustrate the technical content, structural features, objectives, and technical effects of this utility model in detail, the following embodiments are provided in conjunction with the accompanying drawings.

[0037] Please see Figures 1 to 3This utility model discloses a plug connector 100, comprising a rectangular box-shaped outer shell 10, the outer shell 10 having a housing 1 and a cover 2 that engages with the housing 1, the housing 1 and the cover 2 jointly defining an internal space 23. A fixed gear 33 is disposed in the internal space 23 and fixed to the cover 2. A rotating seat 4 is accommodated in the internal space 23 and pivotally connected to the cover 2. At least one telescopic terminal 43 is movably assembled on the rotating seat 4. And at least one conductive spring 81 is accommodated within the outer shell 10 and contacts the telescopic terminal 43.

[0038] like Figure 3 and Figure 4 As shown, in this preferred embodiment, the rotating base 4 has a pivot shaft 44 pivotally connected to the housing 10, and the pivot shaft 44 is coaxially arranged with the fixed gear 33. The interior of the rotating base 4 includes an accommodating space, a slide rail 415 disposed within the accommodating space and orthogonal to the pivot shaft 44, a sliding member 42 slidably disposed on the slide rail 415, a transmission gear 5 pivotally connected to the rotating base 4 and meshing with the fixed gear 33, a rack structure 6 disposed on the surface of the sliding member 42 and meshing with the transmission gear 5, and at least one compression elastic member 7. Both ends of the compression elastic member 7 are pivotally connected to the rotating base 4 and the sliding member 42, respectively. One end of the telescopic terminal 43 is fixed to the rotating base 4 to contact the conductive spring 81, and the other end is fixed to the sliding member 42, changing the overall length of the telescopic terminal 43 as the sliding member 42 slides.

[0039] Therefore, as Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, when the rotating seat 4 unfolds outward from the internal space 23, the transmission gear 5, which meshes with the fixed gear 33, will rotate synchronously with the movement of the rotating seat 4. Further, the rotating seat 4 rotates 90 degrees upward about the pivot shaft 44 towards the upper plate portion 22a of the cover 2 to extend out of the internal space 23, causing the telescopic terminal 43 to electrically contact the conductive spring 81. Simultaneously, the inner gear 55 of the transmission gear 5 rotates counterclockwise relative to the fixed gear 33, and the outer gear 56 of the transmission gear 5 rotates counterclockwise synchronously with the inner gear 55. Through the engagement of the outer gear 56 with the rack structure 6, the sliding member 42 is driven to slide away from the fixed gear 33, causing the telescopic terminal 43 to extend and protrude from the rotating seat 4.

[0040] For example Figure 3 , Figure 4 , Figure 11 and Figure 12 As shown, when the rotating seat 4 is rotated into the internal space 23, the transmission gear 5, which meshes with the fixed gear 33, will rotate synchronously with the movement of the rotating seat 4. Further, the rotating seat 4 rotates 90 degrees downwards about the pivot shaft 44 towards the lower plate portion 22b of the cover 2 to be housed in the internal space 23. At this time, the telescopic terminal 43 and the conductive spring 81 are not in contact with each other. Simultaneously, the internal gear 55 rotates clockwise relative to the fixed gear 33, and the external gear 56 rotates clockwise synchronously with the internal gear 55. The external gear 56 meshes with the rack structure 6, thereby driving the sliding member 42 to slide towards the fixed gear 33, and causing the telescopic terminal 43 to shorten and retract into the rotating seat 4, thus reducing the length of the telescopic terminal 43 exposed in the internal space 23 for easier carrying.

[0041] Please see Figure 3 and Figure 18 The internal space 23 is a rectangular groove recessed inward from one side of the cover 2 and has a bottom plate 21 parallel to the outer shell 10, a pair of side plate portions 22c extending from the bottom plate 21 and facing each other, an upper plate portion 22a extending from the bottom plate 21 and connected between the two side plate portions 22c, and a lower plate portion 22b extending from the bottom plate 21 and connected between the two side plate portions 22c. The bottom plate 21 covers one side of the shell 1, the upper plate portion 22a and the lower plate portion 22b are located on the upper and lower side walls of the cover 2, respectively, and the side plate portions 22c are located on the left and right side walls of the cover 2. The cover 2 also includes an assembly groove 24 formed in the bottom plate 21 and communicating with the internal space 23, and a pair of slots 241 extending outward along both sides of the assembly groove 24 and cutting through the side plate portions 22c.

[0042] Please refer to the following: Figure 4 , Figure 5 as well as Figure 18The rotating base 4 includes a plug housing 41, which is a hollow rectangular shell with an internal mounting groove 411 for accommodating the sliding member 42. The opening of the mounting groove 411 extends rearward to the rear end of the plug housing 41. A through hole 417 passes through the front end of the plug housing 41 and connects to the mounting groove 411. The pivot shaft 44 is configured as a circular shaft and extends outward from the left and right sides of the plug housing 41. The rotating base 4 is fitted into the assembly groove 24 from the inner side of the base plate 21, and the pivot shaft 44 is fitted into the slots 241 respectively, so that the rotating base 4 is pivotally connected between the two side plates 22c. This allows the rotating base 4 to be rotatably mounted on the cover 2 and housed in the internal space 23 with the pivot shaft 44 as the rotation center, thereby achieving convenient storage.

[0043] Please see Figure 4 and Figure 7 The internal space 23 has a base plate 31 connected to the assembly groove 24. The front surface of the base plate 31 extends forward to form an extension 32. The fixed gear 33 is disposed at the end of the extension 32 and is a missing gear 331. The extension 32 and the missing gear 33 extend into the mounting groove 411 to mesh with the transmission gear 5. The transmission gear 5 further includes a gear seat 51 disposed inside the plug housing 41 and a transmission shaft 54 ​​connected to the gear seat 51. The transmission gear 5 is disposed on the transmission shaft 54 ​​and includes an internal gear 55 and an external gear 56 coaxially arranged. The internal gear 55 meshes with the fixed gear 33, and the external gear 56 meshes with the rack structure 6.

[0044] Please see Figure 4 and Figure 7 The sliding member 42 includes a terminal base 421 and a sliding plate 422 extending from the rear end of the terminal base 421 and housed within the gear base 51. The telescopic terminal 43 is disposed on the terminal base 421, and the rack structure 6 protrudes from the upper surface of the sliding plate 422. To enhance the transmission stability between the transmission gear 5 and the gear structure 6, the external gear 56 has a first external gear 561 and a second external gear 562 symmetrically disposed on both sides of the internal gear 55. The rack structure 6 has a first rack 61 and a second rack 62 parallel to each other on opposite sides of the sliding plate 422. The first rack 61 meshes with the first external gear 561, and the second rack 62 meshes with the second external gear 562.

[0045] Please see Figure 4 , Figure 6 as well as Figure 13The telescopic terminal 43 further includes a mating portion 431 that engages with the terminal base 421. The terminal base 421 is disposed in the through hole 417, allowing the mating portion 431 to extend out of the through hole 417 to engage with a mating connector (not shown). A pair of hollow contact portions 432 are attached to the rear end of the mating portion 431, and the contact portions 432 are fixed to the rear end of the plug housing 41 to contact the conductive spring 81. A pair of elastic members 433 are housed within the contact portions 432 and sleeved onto the mating portion 431. The mating portion 431 extends and retracts within the contact portion 432 and maintains contact with the contact portion 432 through the elastic members 433.

[0046] Please see Figure 4 , Figure 8 as well as Figure 15 To facilitate the fixation of the compression elastic element 7, the sliding member 42 has a connecting shaft 423 at the end away from the transmission gear 5, and a fixed shaft 513 is provided on the inner wall of the rotating seat 4. The compression elastic element 7 is configured as a torsion spring and includes a first spring leg 71 and a second spring leg 72. The first spring leg 71 is sleeved on the connecting shaft 423, serving as the movable end of the compression elastic element 7. The second spring leg 72 is sleeved on the fixed shaft 513, serving as the fixed end of the compression elastic element 7. To prevent the first spring leg 71 from dislodging outward from the connecting shaft 423, a stop member 4231 is formed at each of the left and right ends of the connecting shaft 423, and the outer diameter of the stop member 4231 is larger than the outer diameter of the connecting shaft 423. Similarly, to prevent the second spring leg 72 from dislodging outward from the fixed shaft 513, a stop portion 514 is formed at each of the left and right ends of the fixed shaft 513, and the outer diameter of the stop portion 514 is larger than the outer diameter of the fixed shaft 513.

[0047] Please see Figure 3 , Figure 4 , Figure 10 as well as Figure 12When the sliding member 42 is located at both ends of the slide rail 415, the compression displacement of the compression elastic member 7 is small. However, when the sliding member 42 is located in the center of the slide rail 415, the compression displacement of the compression elastic member 7 is large. Therefore, when the rotating seat 4 rotates from the working state to the retracted state or vice versa, the sliding member 42 slides towards the center of the slide rail 415, and the first spring foot 71 sleeved on the connecting shaft 423 causes the compression elastic member 7 to be compressed and deformed as the sliding member 42 slides. When the rotating seat 4 is in the fully extended or fully retracted position, the elastic potential energy of the compression elastic member 7 is minimal. Therefore, the rotating seat 4 can be fixed in the fully extended or fully retracted position under the action of the compression elastic member 7, thus improving the insertion stability and storage stability of the plug connector 100. When the rotating seat 4 is positioned in the fully extended position, the connecting shaft 423 is located at the front end of the fixed shaft 513 in the front-rear direction. When the rotating seat 4 is in the fully retracted position, the connecting shaft 423 is located between the transmission gear 5 and the fixed shaft 513 in the vertical direction.

[0048] Please see Figure 4 , Figure 15 as well as Figure 16 The gear housing 51 includes a top wall 52 and a pair of side walls 53 extending vertically on both sides of the top wall 52. A pair of through holes 531 are formed on the side walls 53. The drive shaft 54 ​​is connected to the through holes 531 to house the internal gear 55 and the transmission gear 5 within the gear housing 51. A groove 521 and a recess 522 are recessed at the center of the top wall 52. The groove 521 and the recess 522 are aligned front to back. The groove 521 is configured to avoid the internal gear 55, and the recess 522 is configured to avoid the fixed gear 33. The top wall 52 also has a pair of clearance grooves 523 located on both sides of the groove 521. The first external gear 561 and the second external gear 562 are housed in the clearance grooves 523. To ensure the gear seat 51 is securely mounted within the rotating base 4, the rotating base 4 includes a pair of retaining grooves 412 recessed from the inner surface of the plug housing 41, a pair of reinforcing ribs 413 extending inward from the inner surface of the plug housing 41 and located on both sides of the retaining grooves 412, and at least one retaining groove 414 formed on the reinforcing ribs 413. The gear seat 51 includes at least one retaining block 532 protruding from the surface of the sidewall 53, the end of the sidewall 53 engaging with the retaining groove 412 so that the sidewall 53 is flush with the inner side of the reinforcing rib 413, and the retaining block 532 engaging in the retaining groove 414.

[0049] Please see Figure 4 , Figure 8 as well as Figure 15 The sliding member 42 includes a slider 427 protruding from the center of the lower surface of the terminal block 421. The slider 427 is located on one side opposite to the rack structure 6. The inner surface of the plug housing 41 is recessed to form a slide rail 415 that engages with the slider 427. The gear seat 51 includes a pair of support arms 515 extending forward from the front end of the side wall 53. The inner side of the terminal block 421 is provided with a pair of flat support members 428. The support arms 515 abut against the support members 428, thereby increasing the stability of the sliding member 42 during displacement. In this embodiment, the front edge of the top wall 52 extends forward to form a connecting plate 512, and the fixed shaft 513 is formed at the end of the connecting plate 512. The connecting plate 512 and the fixed shaft 513 are located between the support arms 515, and the connecting shaft 423 is located between the support members 428.

[0050] Please see Figure 4 and Figure 5 The plug housing 41 has an upper shell 41a and a lower shell 41b that are joined together and together define the mounting groove 411. The fixing groove 412 and the reinforcing rib 413 are disposed on the lower shell 41b to fix the gear seat 51, and the slide rail 415 is disposed on the lower shell 41b to assemble the sliding member 42. The surface of the upper shell 41a is recessed inward to form a recessed hole 418, which is configured to avoid the fixing shaft 513 and the second spring foot 72.

[0051] Please see Figure 5 , Figure 7 , Figure 10 as well as Figure 12 The inner and outer surfaces of the extension 32 each form a downwardly inclined and parallel guide surface 321. The mounting groove 411 has two recessed notches 419 at its opening, which are respectively located on the upper shell 41a and the lower shell 41b. The inner surface of each notch 419 has an inwardly inclined engaging surface, and the engaging surfaces of the two notches 419 face each other symmetrically. The extension 32 engages in one of the notches 419, and the engaging surface is positioned to align with the guide surface 321, thus limiting the extension 32 and the plug housing 41 to each other. When the rotating base 4 is in the use position, the guide surface 321 on the outer surface of the extension 32 aligns with the engaging surface in the notch 419 of the upper shell 41a. When the rotating seat 4 is in the storage state, the guide surface 321 on the inner surface of the extension 32 is aligned with the engaging surface in the notch 419 of the lower shell 41b.

[0052] Please see Figures 1 to 3 The internal space 23 extends outward to form a pair of slots 231. The slots 231 penetrate the lower plate portion 22b of the cover 2 and the outer shell 1. In the storage state, the docking portion 431 is received into the slots 231, making the storage of the rotating seat 4 more stable.

[0053] Please see Figure 3 and Figure 17 The slot 241 has a closed end extending into the internal space 23 and an open end penetrating to the rear edge of the side plate portion 22c. The pivot shaft 44 is rotatably pivotally connected to the closed end of the slot 241 to prevent the rotating seat 4 from disengaging forward from the assembly slot 24. The left and right side edges of the substrate 31 extend outward to form a pair of assembly blocks 34. The assembly blocks 34 are disposed at the open end of the slot 241 and block the rear side of the pivot shaft 44 to prevent the rotating seat 4 from disengaging backward from the slot 241.

[0054] Please see Figure 14 and Figure 18 To fix the substrate 31 to the cover 2, at least one hook 25 extends rearward from the inner surface of the cover 2. In this embodiment, there are three hooks 25, one of which extends rearward from the rear surface of the base plate 21, and the other two hooks 25 extend rearward from the rear side edge of the upper plate portion 22a. At least one latching portion 35 extends rearward from the rear surface of the substrate 31. In this embodiment, there are three latching portions 35, which are respectively latched and fixed to the hooks 25, thereby achieving positioning and fixing between the substrate 31 and the cover 2.

[0055] Please see Figure 3 and Figure 14The plug connector 100 includes a circuit board assembly 8 housed inside the housing 10, and the circuit board assembly 8 includes the conductive spring contact 81. The plug connector 100 also includes a retaining seat 9 coupled to the rear end of the substrate 31 to fix the conductive spring contact 81. The rear surface of the substrate 31 extends rearward to form at least one retaining member 36 that engages with the retaining seat 9. A pair of through slots 37 are formed on the front and rear surfaces of the substrate 31. In this embodiment, three retaining members 36 are provided, one retaining member 36 engaging the top of the retaining seat 9, and the other two retaining members 36 engaging the bottom of the retaining seat 9. The retaining seat 9 is a plastic base body, and the conductive spring contact 81 is bonded to the retaining seat 9 by injection molding. Each conductive spring 81 is provided with a fixing plate 82 encased in the fixing base 9, a connecting end 83 extending rearward from the top edge of the fixing plate 82 and connecting with the circuit board assembly 8, and an elastic arm 84 extending forward from the bottom edge of the fixing plate 82 and then bending backward. The elastic arm 84 is received in the through groove 37, and the outer surface of each elastic arm 84 is raised to form a convex contact end 841 facing the sliding member 42. Through the elastic pushing force of the elastic arm 84, the contact end 841 and the contact part 432 are kept in contact and conductive. In this embodiment, the outer surface of the contact end 841 is set as an arc surface, which helps to improve the smoothness of the rotation of the rotating base 4.

[0056] Please see Figure 18 and Figure 19 To strengthen the connection between the housing 1 and the cover 2, the housing 1 includes at least one fastening portion 11 protruding inward from its inner surface, and the fastening portion 11 has an internally hollow structure. The side edge of the cover 2 extends rearward to form at least one extending rib 221. The inner surface of each extending rib 221 protrudes inward to form a latching block 222. The extending rib 221 extends into the interior of the fastening portion 11, and the latching block 222 engages with the fastening portion 11, thereby achieving positioning and fixation between the housing 1 and the cover 2.

[0057] In summary, this utility model provides a plug connector 100, comprising a housing 10, an internal space 23 recessed on one side of the housing 10, a rotating seat 4 pivotally connected to the internal space 23 about a pivot shaft 44, a sliding member 42 housed in the rotating seat 4 and slidably disposed on a slide rail 415, a telescopic terminal 43 connected to the sliding member 42 and extending and retracting within the rotating seat 4 with the displacement of the sliding member 42, a rack structure 6 protruding from the surface of the sliding member 42, a fixed gear 33 fixed inside the rotating seat 4 and coaxially disposed with the pivot shaft 44, an internal gear 55 housed inside the rotating seat 4 and meshing with the fixed gear 33, and an external gear 56 coaxially disposed on both sides of the internal gear 55 and meshing with the rack structure 6. When the rotating base 4 is rotated, the internal gear 55 rotates relative to the fixed gear 33. The external gear 56 rotates synchronously with the internal gear 55 and meshes with the rack structure 6, causing the sliding member 42 to shift relative to the internal gear. This causes the telescopic terminal 43 to extend and retract within the rotating base 4 for convenient storage. Furthermore, the two ends of the compression elastic member 7 are pivotally connected to the rotating base 4 and the sliding member 42, respectively. The elastic restoring force of the compression elastic member 7 allows the rotating base 4 to be positioned in both the usage and storage states.

Claims

1. A plug connector, characterized in that, It comprises: a housing; a rotating base with a slide rail; a pivot shaft connecting the housing and the rotating base, wherein the extension direction of the slide rail is orthogonal to the pivot shaft; a fixed gear disposed on the housing and coaxially with the pivot shaft; an internal gear pivotally connected to the rotating base and meshing with the fixed gear; an external gear coaxially disposed on the internal gear and pivotally connected to the rotating base; a sliding member slidably disposed on the slide rail; and a rack structure extending from the housing. The sliding member has a surface that meshes with the external gear; at least one telescopic terminal, one end of which is fixed to the rotating seat and the other end of which is fixed to the sliding member, so as to change the length of the telescopic terminal as the sliding member slides; and at least one compression elastic member, one end of which is pivotally connected to the rotating seat and the other end of which is pivotally connected to the sliding member; wherein when the sliding member is located at the front and rear ends of the slide rail, the compression displacement of the compression elastic member is small; and when the sliding member is located at the center of the slide rail, the compression displacement of the compression elastic member is large.

2. The plug connector according to claim 1, characterized in that: The external gear has a first external gear and a second external gear symmetrically disposed on both sides of the internal gear. The rack structure has a first rack and a second rack disposed parallel to each other on both sides of the sliding member. The first rack meshes with the first external gear, and the second rack meshes with the second external gear.

3. The plug connector according to claim 1, characterized in that: The plug connector further includes a base plate housed in the housing, a gear seat disposed inside the rotating seat, and a drive shaft connected to the gear seat. The internal gear and the external gear are disposed on the drive shaft. An extension portion extends from the surface of the base plate into the interior of the rotating seat. The fixed gear is disposed at the front end of the extension portion. The sliding member has a connecting shaft at the end away from the fixed gear. A fixed shaft is disposed on the inner wall of the rotating seat. The two ends of the compression elastic member are pivotally connected to the connecting shaft and the fixed shaft, respectively.

4. The plug connector according to claim 3, characterized in that: The gear seat includes a top wall, a pair of side walls extending vertically to both sides of the top wall, and a connecting plate extending from the side edge of the top wall. The fixed shaft is disposed at the end of the connecting plate. The side walls have a pair of through holes for connecting the drive shaft. The inner surface of the top wall is recessed to form a groove and a recess aligned front to back to avoid the internal gear and the fixed gear. The top wall also has a pair of clearance grooves located on both sides of the groove to accommodate the external gear. The inner surface of the rotating seat extends to form a pair of reinforcing ribs flush with the side walls. At least one slot is formed on the reinforcing ribs. At least one locking block protrudes from the side wall and engages with the slot.

5. The plug connector according to claim 4, characterized in that: The sliding member includes a terminal block, a sliding plate extending from the rear end of the terminal block and housed within the gear seat, and a pair of flat-surfaced support members disposed on both sides of the terminal block. The rack structure extends from the surface of the sliding plate. The gear seat includes a pair of support arms extending forward from the front end of the sidewall and abutting against the support members. The connecting plate and the fixed shaft are located between the support arms. The connecting shaft extends from the front end of the sliding plate and is located between the support members.

6. The plug connector according to claim 5, characterized in that: The telescopic terminal includes a mating portion that is coupled to the terminal block, a contact portion that is coupled to the rear end of the mating portion and fixed to the rotating base, and an elastic member that is housed inside the contact portion and sleeved on the mating portion. The plug connector also includes at least one conductive spring disposed on the substrate and in contact with the contact portion.

7. The plug connector according to claim 3, characterized in that: A stop is formed at each end of the connecting shaft, and the outer diameter of the stop is larger than the outer diameter of the connecting shaft. A stop portion is formed at each end of the fixed shaft, and the outer diameter of the stop portion is larger than the outer diameter of the fixed shaft.

8. The plug connector according to claim 1, characterized in that: The surface of the slider protrudes to form a set of sliders connected to the slide rail, the sliders being located on one side opposite to the rack structure.

9. The plug connector according to claim 3, characterized in that: The inner and outer surfaces of the extension are respectively formed with downwardly inclined and parallel guide surfaces. The interior of the rotating base is provided with a mounting groove and the opening of the mounting groove extends to the rear end of the rotating base. The opening of the mounting groove is recessed inward to form two notches. The inner surface of each notch has an inwardly inclined engagement surface. The engagement surfaces of the two notches face each other symmetrically, and the extension engages in one of the notches. The engagement surface is set to align with the guide surface.

10. The plug connector according to claim 3, characterized in that: The outer casing has a shell and a cover that engages with the shell. The shell and the cover together define an internal space. The internal space is recessed inward from one side of the cover. The internal space has a bottom plate covering one side of the shell and two side plates extending from the bottom plate and located on opposite side walls of the cover. The bottom plate has an assembly groove communicating with the internal space. The two sides of the assembly groove extend outward to form a pair of slots that cut through the side plates. The pivot shaft is pivotally connected to the slots. The base plate is engaged in the assembly groove. A pair of assembly blocks extend outward from the outer edge of the base plate. The assembly blocks engage with the slots and block one side of the pivot shaft.

Images