Error-proof high-voltage connector

Abstract

The utility model discloses a mistake-proof high-voltage connector which comprises a socket shell and a plug shell, a handle is arranged on the plug shell and comprises a connecting section and two supporting sections, the extending end of each supporting section is connected with the side portion of the plug shell in a pivoted mode, and the inner wall of each extending end is provided with an arc section. A first tooth groove and a second tooth groove which are adjacent are formed in the arc section along the outer edge of the arc section, the second tooth groove is located on the front side of the first tooth groove, the depth of the second tooth groove is smaller than that of the first tooth groove, racks are arranged on the two sides of the socket shell respectively, and first teeth and second teeth are arranged on the racks from front to back. The thickness of the first teeth is larger than that of the second teeth and is matched with the depth of the first tooth grooves, and the thickness of the second teeth is matched with that of the second tooth grooves, so that when the socket shell and the plug shell are connected in an inserted mode, the first teeth can only be clamped into the first tooth grooves. According to the utility model, the meshing position is limited through the different thicknesses of the teeth and the tooth grooves, so that the error-proofing effect is achieved at the initial plugging position, and the correct plugging between the plug shell and the socket shell is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage connectors, in particular to an error-proof high-voltage connector. Background Art

[0002] The high-voltage connector includes a plug assembly and a socket assembly that are plugged together, specifically including a housing, power terminals, signal terminals, shielding housing and other components. The plug assembly and the socket assembly are plugged together to ensure the effective electrical connection between the charging station and the charger of the new energy vehicle. However, due to the high voltage, high current and the inevitable bumps during the driving of the vehicle, it is difficult to ensure the stability of the connection between the plug assembly and the socket assembly simply plugging them together, and handles need to be set on the outside of the housings of the two for secondary locking.

[0003] Many existing connector handles, such as those disclosed in announcement numbers CN 209948209 U and CN 219040896 U, are pivotally connected to the plug housing at both ends and are in the shape of a U-shaped handle. In order to facilitate plugging and unplugging, the connection between the outer periphery of the two ends of the handle and the two sides of the socket housing adopts a connection structure in which gears and racks are meshed. However, conventional gears have multiple teeth, which makes the meshing structure prone to misaligned meshing problems. As mentioned above, in the prior art, a protrusion is set at the end of the handle's closed stroke to prevent errors, but this often requires the handle to be pivoted to the final position to find out whether the handle and the socket housing are correctly meshed. Although this can find the misaligned meshing problem, it cannot improve the efficiency of plugging and unplugging, and there are problems of untimely discovery and wasted stroke. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide an error-proof high-voltage connector.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The error-proof high-voltage connector comprises a pluggable socket housing and a plug housing, wherein a rotatable handle is arranged on the plug housing, wherein the handle comprises a connecting section and two supporting sections respectively and vertically fixedly arranged at both ends of the connecting section, wherein an extended end of the supporting section is pivotally connected to a connecting shaft arranged on a side of the plug housing, wherein an arc section is arranged on an inner wall of a side of the extending end close to the supporting section, wherein adjacent first and second tooth grooves are arranged along an outer edge of the arc section, wherein the second tooth groove is located at a front side of the first tooth groove, and a groove depth of the second tooth groove is smaller than that of the first tooth groove, and axially extending A rack, wherein a first tooth and a second tooth are arranged on the rack from front to back, and the thickness of the first tooth is greater than that of the second tooth and is adapted to the groove depth of the first tooth groove, and the thickness of the second tooth is adapted to the second tooth groove, so that in the starting position of the plug-in connection between the socket housing and the plug housing, the first tooth can only be inserted into the first tooth groove, and at this time, the handle can be driven to engage with the circular arc segment by rotating clockwise relative to the plug housing until the handle is engaged with the plug housing, so as to limit the rack to remain in a state of meshing with the circular arc segment; the handle rotates counterclockwise to drive the rack to separate from the circular arc segment.

[0007] Preferably, the inner contours of the first tooth groove and the second tooth groove are consistent, and the groove walls on both sides of the first tooth groove and the second tooth groove are symmetrical arc-shaped.

[0008] Preferably, the first tooth protrudes outward from the second tooth, and the cross-sections of the first tooth and the second tooth are consistent, both being triangular.

[0009] Preferably, an inner cavity is provided inside the plug shell, a slot matching the socket shell is formed between the front end of the inner cavity and the plug shell, the socket shell is inserted into the slot, openings are formed between the two sides of the slot and the plug shell, the inner contour of the opening matches the outer contour of the side of the socket shell, so that the rack extends from the opening and engages with the arc segment.

[0010] Preferably, a guide strip extending axially is provided on a side of the socket housing, and guide grooves matching the guide strip are provided on inner walls on both sides of the slot.

[0011] Preferably, card blocks are respectively provided on both sides of the plug housing, and a bayonet matching the card block is correspondingly provided on the support section. When the handle is rotated to its limit position, the inner wall of the handle fits with the outer wall of the plug housing, and the bayonet is engaged with the card block.

[0012] Preferably, the connecting section extends straight, and the middle part of the connecting section has a limiting slot, in which a locking block is movably inserted, and a clamping ring is fixedly provided on the plug housing. When the inner wall of the handle is in contact with the outer wall of the plug housing, the front end of the locking block is opposite to the clamping ring, and the locking block is pushed so that its front end is clamped in the clamping ring to lock the handle and the plug housing.

[0013] Preferably, a locking limit opening and an unlocking limit opening are symmetrically arranged in the limit slot, and a locking hook is arranged on the inner side of the locking block. In the unlocking state, the locking hook is clamped in the unlocking limit opening; in the locking state, the locking hook is clamped in the locking limit opening.

[0014] Preferably, two limit blocks are provided on the plug housing, and the limit blocks are inserted into the unlocking limit opening to limit the position of the connecting section. The rear side surface of the limit block is a beveled surface, so that the locking hook is clamped between the beveled surface and the unlocking limit opening.

[0015] Preferably, a group of first connecting terminals is arranged in the socket housing, and a group of second connecting terminals is arranged in the plug housing. When the socket housing and the plug housing are plugged in, the first connecting terminals are plugged in with the second connecting terminals.

[0016] The beneficial effects of the utility model are mainly reflected in:

[0017] 1. The socket housing and the plug housing are plugged in a meshing manner, and the first tooth grooves and the second tooth grooves with different groove depths are arranged to mesh with the first teeth and the second teeth with different thicknesses, so that the first teeth can only mesh with the first tooth grooves, and the second teeth can only mesh with the second tooth grooves. The meshing position is limited by the different thicknesses of different teeth and tooth grooves to effectively prevent errors, and the first teeth are arranged at the front end of the rack to eliminate the possibility of misaligned meshing at the starting position of the plug housing and the socket housing for plugging and unplugging, thereby ensuring the correct insertion between the plug housing and the socket housing, ensuring error prevention while improving accuracy and efficiency;

[0018] 2. The inner contours of the first tooth groove and the second tooth groove are consistent, and the cross-sections of the first tooth and the second tooth are the same, so that during the meshing process of the arc segment and the rack, the first tooth groove and the second tooth groove provide balanced insertion and separation forces, so that the meshing process has reliable continuity;

[0019] 3. The handle is formed to match the outer contour of the socket shell, and a locking block is set on the connecting section of the handle to lock with the socket shell, and a bayonet is set on the supporting section to engage with the socket shell to achieve multi-point positioning of the handle, ensure the relative locking between the handle and the socket shell, and ensure the locking stability between the arc section and the rack, so that it will not loosen, thereby providing connection stability and safety of use between the socket and the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 : A schematic diagram of an embodiment of the utility model;

[0022] Figure 2 : A partial structural diagram of an embodiment of the utility model;

[0023] Figure 3 : A partial cross-sectional view of an embodiment of the utility model;

[0024] Figure 4 : A schematic diagram of a handle in an embodiment of the utility model;

[0025] Figure 5 : A front view of the handle in the embodiment of the utility model;

[0026] Figure 6 : A schematic diagram of a socket housing in an embodiment of the utility model;

[0027] Figure 7 : Schematic diagram of the end of the plug housing in the embodiment of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0029] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0030] like Figures 1 to 7As shown, the utility model discloses a mismatch-proof high-voltage connector, comprising a pluggable socket housing 1 and a plug housing 2, wherein a rotatable handle 3 is provided on the plug housing 2, and the handle 3 comprises a connecting section 301 and two supporting sections 302 respectively and vertically fixedly arranged at both ends of the connecting section 301. The extending end of the supporting section 302 is pivotally connected to a connecting shaft 201 arranged at the side of the plug housing 2, the outer contour of the end of the connecting shaft 201 is non-circular, preferably teardrop-shaped, and the width of the connecting shaft 201 is greater than the diameter of the connecting shaft 201, the axis of the extending end is provided with a connecting hole adapted to the end of the connecting shaft 201, the extending end is sleeved on the connecting shaft 201 and rotates around it, and the end of the connecting shaft 201 radially positions the extending end to prevent the extending end from being separated from the connecting shaft 201.

[0031] The inner wall of the extension end close to the support section 302 has an arc section 303, and the arc section 303 is provided with adjacent first tooth grooves 304 and second tooth grooves 305 along its outer edge, the second tooth grooves 305 are located in front of the first tooth grooves 304, and the groove depth of the second tooth grooves 305 is less than the first tooth grooves 304, and the two sides of the socket housing 1 are respectively provided with axially extending racks 101, and the racks 101 are provided with first teeth 102 and second teeth 103 from front to back, and the first teeth 102 and the second teeth 103 are continuously arranged. Preferably, the first teeth 102 are arranged at the top of the rack 101, and the first teeth 102 The thickness of the second tooth 103 is greater than that of the second tooth 103 and is adapted to the groove depth of the first tooth groove 304. The thickness of the second tooth 103 is adapted to the second tooth groove 305, so that in the starting position of the plug-in connection between the socket housing 1 and the plug housing 2, the first tooth 102 can only be inserted into the first tooth groove 304. At this time, the handle 3 can drive the rack 101 to engage with the arc segment 303 by rotating clockwise relative to the plug housing 2 until the handle 3 is engaged with the plug housing 2 to limit the rack 101 to maintain a state of meshing with the arc segment 303; the handle 3 rotates counterclockwise to drive the rack 101 to separate from the arc segment 303.

[0032] The socket housing 1 and the plug housing 2 are plugged in by meshing, and the first tooth grooves 304 and the second tooth grooves 305 with different groove depths are arranged to mesh with the first teeth 102 and the second teeth 103 with different thicknesses. The difference in thickness between the first teeth 102 and the second teeth 103 limits the first teeth 102 to only mesh with the first tooth grooves 304, and the second teeth 103 to mesh with the second tooth grooves 305, so as to effectively prevent errors. The first teeth 102 are arranged at the front end of the rack 101 to eliminate the possibility of misalignment at the starting position of the plug housing 2 and the socket housing 1 when plugging and unplugging, thereby ensuring that the plug housing 2 and the socket housing 1 are correctly plugged in, ensuring error prevention while improving accuracy and efficiency.

[0033] Further, such as Figure 4 and Figure 5 As shown, the inner contours of the first tooth groove 304 and the second tooth groove 305 are consistent, and the groove walls on both sides of the first tooth groove 304 and the second tooth groove 305 are symmetrical arc-shaped. The arc-shaped structure facilitates the first tooth groove 304 and the second tooth groove 305 to generate a balanced and continuous supporting force on the first tooth 102 and the second tooth 103 during the rotation process, thereby ensuring the stability of the meshing.

[0034] The first tooth 102 protrudes from the second tooth 103 , and the cross-sections of the first tooth 102 and the second tooth 103 are consistent, both in the shape of a triangle, so as to match the first tooth groove 304 and the second tooth groove 305 .

[0035] like Figure 7 As shown, an inner cavity 200 is provided inside the plug housing 2, and a slot 202 matching the socket housing 1 is formed between the front end of the inner cavity 200 and the plug housing 2. The socket housing 1 is inserted into the slot 202, and openings 203 are formed between the two sides of the slot 202 and the plug housing 2. The inner contour of the opening 203 matches the outer contour of the side of the socket housing 1, so that the rack 101 extends from the opening 203 and meshes with the arc segment 303.

[0036] Specifically, the socket housing 1 is a flange structure, and its axis has a limiting cavity wall 105, one side of the limiting cavity wall 105 is higher than the cavity wall on the opposite side, and the connecting cavity walls on both sides extend obliquely to form a semi-enclosed structure. The inner contour of the slot 202 is adapted to the limiting cavity wall 105 to be plugged with the limiting cavity wall 105, the rack 101 is located on the connecting cavity wall, and the connecting cavity wall 106 extends from the opening 203, so that the rack 101 extends out and engages with the arc segment 303.

[0037] Furthermore, an axially extending guide bar 104 is provided on the side of the socket housing 1, and guide grooves 204 matching the guide bar 104 are provided on the inner walls on both sides of the slot 202. When the socket housing 1 and the plug housing 2 are plugged in, the guide bar 104 is slidably inserted in the guide groove 204 to further limit the plugging direction between the socket housing 1 and the plug housing 2, so that the plugging between the two is smoother.

[0038] like Figure 1-Figure 3 As shown, blocks 205 are respectively provided on both sides of the plug housing 2, and a bayonet 306 matching the block 205 is correspondingly provided on the support section 302. When the handle 3 is rotated to its limit position, the inner wall of the handle 3 fits with the outer wall of the plug housing 2, and the bayonet 306 is engaged with the block 205.

[0039] Specifically, the outer contour of the socket housing 2 in the preferred embodiment is a cube, and the connecting section 301 and the supporting section 302 of the handle 3 are integrally formed to form a U-shape that matches the outer contour of the socket housing 2. The supporting section 302 is preferably L-shaped to increase the contact area with the socket housing 2. The bayonet 306 is located at the bend of the supporting section 302. When the handle 3 is rotated to its final position, the connecting section 301 and the supporting section 302 are both in contact with the outer wall of the socket housing 2. At this time, the bayonet 306 is engaged with the clamping block 205 to make the handle 3 fit tightly with the socket housing 2.

[0040] Furthermore, in order to stably and reliably limit the effective clamping between the arc segment 303 and the rack 101, the connecting segment 301 extends straight, and the middle part of the connecting segment 301 has a limiting slot 307, and a locking block 4 is movably inserted in the limiting slot 307. A clamping ring 206 is fixed on the plug housing 2. When the inner wall of the handle 3 fits the outer wall of the plug housing 2, the front end of the locking block 4 faces the clamping ring 206, and the locking block 4 is pushed so that its front end is clamped in the clamping ring 206 to lock the handle 3 and the plug housing 2. In order to facilitate the movement of the locking block 4, the outer surface of the locking block 4 has anti-slip grooves.

[0041] Specifically, a group of through holes are symmetrically arranged in the limiting slot 307, and the group of through holes correspond to each other to form a locking limiting opening 308 and an unlocking limiting opening 309. A locking hook 401 is symmetrically arranged on the inner side of the locking block 4. In the unlocking state, the locking hook 401 is clamped in the unlocking limiting opening 309; in the locking state, the locking hook 401 is clamped in the locking limiting opening 308. The locking hook 401 switches and moves to the locking limiting opening 308 or the unlocking limiting opening 309 as the locking block 4 moves. The end surface of the locking hook 401 has a guiding inclined surface to facilitate its movement, and the locking limiting opening 308 or the unlocking limiting opening 309 is clamped with the locking hook 401 to limit its position.

[0042] Furthermore, two limit blocks 207 are provided on the plug housing 2, and the limit blocks 207 are inserted into the unlocking limit opening 309 to limit the position of the connecting section 301. The rear side surface of the limit block 207 is a beveled surface, so that the locking hook 401 is clamped between the beveled surface and the unlocking limit opening 309.

[0043] In addition, a group of first connection terminals 5 are arranged in the socket housing 1, and a group of second connection terminals are arranged in the plug housing 2. When the socket housing 1 and the plug housing 2 are plugged in, the first connection terminals 5 are plugged in with the second connection terminals to achieve electrical connection. Other required connection components are also arranged in the socket housing 1 and the plug housing 2. In addition, the prior art is not the focus of this solution and will not be described here.

[0044] In the illustrated embodiment, the plug housing 2 has a bent portion. The present solution does not limit the specific shape of the plug housing 2, which may be bent or extend straight.

[0045] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0046] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A fault-proof high-voltage connector, comprising a pluggable socket housing (1) and a plug housing (2), characterized in that: The plug housing (2) is provided with a rotatable handle (3), the handle (3) comprising a connecting section (301) and two supporting sections (302) respectively fixedly arranged at both ends of the connecting section (301), the extended end of the supporting section (302) being pivotally connected to a connecting shaft (201) arranged on the side of the plug housing (2), the inner wall of the extended end close to the supporting section (302) is provided with an arc section (303), the arc section (303) is provided with adjacent first tooth grooves (304) and second tooth grooves (305) along its outer edge, the second tooth groove (305) being located at the front side of the first tooth groove (304), and the groove depth of the second tooth groove (305) is smaller than that of the first tooth groove (304), the two sides of the socket housing (1) are respectively provided with axially extending racks (101), and the racks (101) are provided with There are first teeth (102) and second teeth (103), and the thickness of the first teeth (102) is greater than that of the second teeth (103) and matches the groove depth of the first tooth groove (304), and the thickness of the second teeth (103) matches the second tooth groove (305), so that at the starting position of the plug-in connection between the socket housing (1) and the plug housing (2), the first teeth (102) can only be inserted into the first tooth groove (304), and at this time, the handle (3) can be rotated clockwise relative to the plug housing (2) to drive the rack (101) to mesh with the circular arc segment (303) until the handle (3) is engaged with the plug housing (2) to limit the rack (101) to maintain a meshed state with the circular arc segment (303); the handle (3) rotates counterclockwise to drive the rack (101) to separate from the circular arc segment (303).

2. The error-proof high-voltage connector according to claim 1, characterized in that: The inner contours of the first tooth groove (304) and the second tooth groove (305) are consistent, and the groove walls on both sides of the first tooth groove (304) and the second tooth groove (305) are symmetrical arc-shaped.

3. The error-proof high-voltage connector according to claim 2, characterized in that: The first tooth (102) protrudes outward from the second tooth (103), and the cross-sections of the first tooth (102) and the second tooth (103) are consistent and are both triangular.

4. The error-proof high-voltage connector according to claim 3, characterized in that: An inner cavity (200) is provided inside the plug housing (2), a slot (202) matching the socket housing (1) is formed between the front end of the inner cavity (200) and the plug housing (2), the socket housing (1) is inserted into the slot (202), openings (203) are formed between the two sides of the slot (202) and the plug housing (2), the inner contour of the opening (203) matches the outer contour of the side of the socket housing (1), so that the rack (101) extends from the opening (203) and meshes with the circular arc segment (303).

5. The error-proof high-voltage connector according to claim 4, characterized in that: An axially extending guide strip (104) is provided on the side of the socket housing (1), and guide grooves (204) matching the guide strip (104) are provided on the inner walls on both sides of the slot (202).

6. The error-proof high-voltage connector according to claim 5, characterized in that: Blocks (205) are respectively provided on both sides of the plug housing (2), and a bayonet (306) matching the block (205) is correspondingly provided on the support section (302); when the handle (3) is rotated to its limit position, the inner wall of the handle (3) fits with the outer wall of the plug housing (2), and the bayonet (306) is engaged with the block (205).

7. The error-proof high-voltage connector according to claim 6, characterized in that: The connecting section (301) extends straight, and a limiting slot (307) is provided in the middle of the connecting section (301). A locking block (4) is movably inserted into the limiting slot (307). A clamping ring (206) is fixedly provided on the plug housing (2). When the inner wall of the handle (3) is in contact with the outer wall of the plug housing (2), the front end of the locking block (4) faces the clamping ring (206), and the locking block (4) is pushed so that its front end is clamped in the clamping ring (206), thereby locking the handle (3) and the plug housing (2).

8. The error-proof high-voltage connector according to claim 7, characterized in that: A locking limit opening (308) and an unlocking limit opening (309) are symmetrically arranged in the limit slot (307); a locking hook (401) is arranged on the inner side of the locking block (4); in the unlocking state, the locking hook (401) is clamped in the unlocking limit opening (309); in the locking state, the locking hook (401) is clamped in the locking limit opening (308).

9. The error-proof high-voltage connector according to claim 8, characterized in that: Two limit blocks (207) are provided on the plug housing (2), and the limit blocks (207) are inserted into the unlocking limit opening (309) to limit the position of the connecting section (301); the rear side surface of the limit block (207) is a beveled surface, so that the locking hook (401) is clamped between the beveled surface and the unlocking limit opening (309).

10. The error-proof high-voltage connector according to any one of claims 1 to 9, characterized in that: A group of first connecting terminals (5) is arranged in the socket housing (1), and a group of second connecting terminals is arranged in the plug housing (2); when the socket housing (1) and the plug housing (2) are plugged together, the first connecting terminals (5) are plugged into the second connecting terminals.

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