Shielding shell for a high-voltage connector, connector housing assembly, connector and connector assembly

Abstract

Disclosed are a shield case for a high voltage connector, a connector case assembly, a connector, and a connector assembly. The shield case includes a peripheral wall that encloses an inner cavity adapted to accommodate an inner case of a connector, and a protrusion that is formed radially protruding on the peripheral wall for latching to an outer case of the connector. An opening is formed on the protrusion that communicates with the inner cavity to allow a portion of a latching protrusion of the inner case to latch to the outer case of the connector via the opening, and the protrusion radially shields other portions of the latching protrusion except the portion when the shield case is assembled to the inner case. In the present invention, the opening on the shield case is smaller in size than the latching protrusion on the inner case, and thus, the electromagnetic shielding effect of the shield case can be improved.

Description

Technical Field

[0001] The present invention relates to a shielding shell for a high-voltage connector, a connector housing assembly including the shielding shell, a connector including the connector housing assembly, and a connector assembly including the connector. Background Technology

[0002] In the prior art, connectors typically include a housing, a shielding shell, an inner housing, and terminals. The terminals are mounted in the inner housing, the inner housing is mounted in the shielding shell, and the shielding shell is mounted in the outer housing. In the prior art, protrusions are typically formed on the inner housing, and corresponding openings are formed on the shielding shell. When the inner housing is assembled into the shielding shell, the protrusions on the inner housing are fully engaged with the openings on the shielding shell, thereby securing the inner housing to the shielding shell. The shielding shell is then locked into the outer housing by locking tabs.

[0003] In the prior art, the electromagnetic shielding effect of the shielding shell is reduced because the size of the opening on the shielding shell is comparable to the size of the entire protrusion on the inner shell. Summary of the Invention

[0004] The purpose of this invention is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0005] According to one aspect of the invention, a shielding shell for a high-voltage connector is provided, comprising: a peripheral wall forming an inner cavity adapted to receive an inner housing of the connector; and a protrusion formed radially projecting on the peripheral wall for locking onto an outer housing of the connector. An opening communicating with the inner cavity is formed in the protrusion to allow a portion of a locking protrusion of the inner housing to lock onto the outer housing of the connector via the opening; when the shielding shell is assembled onto the inner housing, the protrusion radially obstructs other portions of the locking protrusion except for the stated portion.

[0006] According to an exemplary embodiment of the invention, the inner side of the protrusion is disposed radially outward relative to the inner surface of the peripheral wall to be adapted to lock onto other portions of the locking protrusion.

[0007] According to another exemplary embodiment of the present invention, the protrusion is an inwardly concave and outwardly convex structure formed on the peripheral wall by a stamping process.

[0008] According to another exemplary embodiment of the invention, the shielding shell further includes a first contact spring, which is connected to the edge of a first opening at one end of the peripheral wall and bent into the first opening to make electrical contact with a mating shielding shell of a mating connector inserted into the first opening of the shielding shell.

[0009] According to another exemplary embodiment of the invention, the shielding shell further includes: an end wall connected to the other end of the peripheral wall and having a second opening formed on the end wall to allow a cable assembly to pass through; and a second contact spring connected to the edge of the second opening of the end wall and bent into the second opening to make electrical contact with a shielding connector on a cable assembly inserted into the second opening of the shielding shell.

[0010] According to another exemplary embodiment of the invention, the protrusion has a locking surface surrounding the opening and adapted to be fastened to the outer casing, such that the inner casing and the shielding shell can be simultaneously fastened to the outer casing.

[0011] According to another exemplary embodiment of the invention, the shielding shell is adapted to be inserted into the outer shell body along a first direction, the locking surface of the protrusion is perpendicular to the first direction, and the opening on the protrusion opens outward along a second direction opposite to the first direction.

[0012] According to another exemplary embodiment of the invention, the locking surface is provided to protrude radially from the peripheral wall.

[0013] According to another exemplary embodiment of the present invention, the protrusion and the peripheral wall are continuously arranged along the circumferential direction of the shielding shell.

[0014] According to another aspect of the present invention, a connector housing assembly is provided, comprising: an outer housing having a mating port at one end adapted to mate with a mating housing of a mating connector; the aforementioned shielding shell, mounted in the outer housing; and an inner housing mounted in the shielding shell. A locking protrusion is formed on the outer surface of the inner housing, a portion of the locking protrusion being locked to the outer housing via an opening in a protrusion on the shielding shell, and the remaining portion of the locking protrusion, excluding the stated portion, being disposed on the inner side of the protrusion and radially blocked by the protrusion.

[0015] According to an exemplary embodiment of the present invention, the mating port of the outer casing includes: an outer peripheral wall; an inner peripheral wall located inside the outer peripheral wall; and a radial wall connected between one end of the outer peripheral wall and the inner peripheral wall. The shielding shell is installed in the inner peripheral wall of the outer casing, and a retaining step is formed on the inner peripheral wall, wherein the portion of the locking protrusion locks onto the retaining step of the inner peripheral wall.

[0016] According to another exemplary embodiment of the invention, the portion of the latching protrusion has an engagement surface that engages with the anti-reverse step.

[0017] According to another exemplary embodiment of the invention, the protrusion has a locking surface surrounding the opening and locking onto the anti-reverse step.

[0018] According to another exemplary embodiment of the present invention, the shielding shell is inserted into the outer shell along a first direction, and the anti-retraction step, the mating surface of the latching protrusion, and the locking surface of the protrusion are perpendicular to the first direction.

[0019] According to another exemplary embodiment of the present invention, the protrusion and the latching protrusion are arranged to abut against each other.

[0020] According to another aspect of the present invention, a connector is provided, comprising: the aforementioned connector housing assembly and a cable assembly. The cable assembly includes: a cable; a terminal electrically connected to one end of the cable; and a shielding connector electrically connected to the shielding layer of the cable and in electrical contact with the shielding housing. Through-holes are formed in the outer housing and the inner housing to allow the cable assembly to pass through, the cable assembly being inserted into the inner housing via the through-holes; the inner housing includes a terminal holding portion, in which a terminal slot is formed, the terminal being inserted into the terminal slot.

[0021] According to an exemplary embodiment of the present invention, the connector further includes: a cable retaining end cap, mounted to the other end of the housing for securing the cable to the housing; and a cable sealing assembly, mounted in a receiving cavity at the other end of the housing for sealing the gap between the cable and the housing. The cable retaining end cap has a rotationally symmetrical structure such that after rotating 90 degrees about its central axis, the cable retaining end cap coincides with the cable retaining end cap before rotation; the cable sealing assembly has a rotationally symmetrical structure such that after rotating 90 degrees about its central axis, the cable sealing assembly coincides with the cable sealing assembly before rotation.

[0022] According to another exemplary embodiment of the invention, the connector includes a plurality of cable assemblies, and identification marks for identifying terminals of the plurality of cable assemblies are formed only on the outer surface of the housing.

[0023] According to another exemplary embodiment of the invention, the cable sealing assembly includes an elastic seal and a rigid support assembled together, the elastic seal being axially pressed between the rigid support and the end wall of the cable fixing end cap; the elastic seal has a rotationally symmetrical structure such that the elastic seal coincides with the elastic seal before rotation after rotating 90 degrees about its central axis; the rigid support has a rotationally symmetrical structure such that the rigid support coincides with the rigid support before rotation after rotating 90 degrees about its central axis.

[0024] According to another aspect of the present invention, a connector assembly is provided, comprising: the aforementioned connector and a mating connector mating with the connector.

[0025] In the aforementioned exemplary embodiments of the present invention, the opening size on the shielding shell is smaller than the latch protrusion on the inner shell, thereby improving the electromagnetic shielding effect of the shielding shell.

[0026] Furthermore, in some of the aforementioned exemplary embodiments of the present invention, the inner shell is locked onto the shielding shell, and the inner shell and the shielding shell are simultaneously locked onto the outer shell, thereby increasing the holding force of the inner shell and preventing the inner shell from becoming loose.

[0027] Other objects and advantages of the invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0028] Figure 1 A perspective view of a connector according to an exemplary embodiment of the present invention is shown;

[0029] Figure 2 An exploded schematic diagram of a connector according to an exemplary embodiment of the present invention is shown;

[0030] Figure 3 An exploded schematic diagram of a connector housing assembly according to an exemplary embodiment of the present invention is shown;

[0031] Figure 4 An exploded schematic diagram of the inner housing and shielding shell of a connector according to an exemplary embodiment of the present invention is shown.

[0032] Figure 5 A longitudinal sectional view of a connector housing assembly according to an exemplary embodiment of the present invention is shown;

[0033] Figure 6 An exploded view of a connector housing assembly according to an exemplary embodiment of the present invention is shown;

[0034] Figure 7 A longitudinal sectional view of a connector housing assembly according to an exemplary embodiment of the present invention, taken from another location;

[0035] Figure 8 An exploded view of the connector housing, cable assembly, cable retaining end cap, and cable sealing assembly according to an exemplary embodiment of the present invention is shown.

[0036] Figure 9An exploded view of the connector housing, cable retaining end cap, and cable sealing assembly according to an exemplary embodiment of the present invention is shown.

[0037] Figure 10 An exploded view of a cable retaining end cap and cable sealing assembly of a connector according to an exemplary embodiment of the present invention is shown.

[0038] Figure 11 This diagram shows an assembly of the connector housing and cable fixing end cap according to an exemplary embodiment of the present invention. Detailed Implementation

[0039] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0040] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0041] According to a general technical concept of the present invention, a shielding shell for a high-voltage connector is provided, comprising: a peripheral wall forming an inner cavity adapted to receive an inner housing of the connector; and a protrusion formed radially on the peripheral wall for locking onto an outer housing of the connector. An opening communicating with the inner cavity is formed in the protrusion to allow a portion of a locking protrusion of the inner housing to lock onto the outer housing of the connector via the opening; when the shielding shell is assembled onto the inner housing, the protrusion radially obstructs other portions of the locking protrusion except for the stated portion.

[0042] According to another general technical concept of the present invention, a connector housing assembly is provided, comprising: an outer housing having a mating port at one end adapted to mate with a mating housing of a mating connector; the aforementioned shielding shell, installed in the outer housing; and an inner housing installed in the shielding shell. A locking protrusion is formed on the outer surface of the inner housing, a portion of the locking protrusion being locked to the outer housing via an opening of a protrusion on the shielding shell, and the remaining portion of the locking protrusion, excluding the stated portion, being disposed on the inner side of the protrusion and radially blocked by the protrusion.

[0043] According to another general technical concept of the present invention, a connector is provided, comprising: the aforementioned connector housing assembly and a cable assembly. The cable assembly includes: a cable; a terminal electrically connected to one end of the cable; and a shielding connector electrically connected to the shielding layer of the cable and in electrical contact with the shielding housing. Through holes are formed in the outer housing and the inner housing to allow the cable assembly to pass through, and the cable assembly is inserted into the inner housing via the through holes; the inner housing includes a terminal holding portion, in which a terminal slot is formed, and the terminal is inserted into the terminal slot.

[0044] Figure 1 A perspective view of a connector according to an exemplary embodiment of the present invention is shown; Figure 2 An exploded schematic diagram of a connector according to an exemplary embodiment of the present invention is shown; Figure 3 An exploded schematic diagram of a connector housing assembly according to an exemplary embodiment of the present invention is shown; Figure 4 An exploded schematic diagram showing the inner housing 2 and shielding shell 3 of a connector according to an exemplary embodiment of the present invention.

[0045] like Figures 1 to 4 As shown, in the illustrated embodiment, the connector can be a high-voltage connector. The connector includes a connector housing assembly and a cable assembly 5. The connector housing assembly includes an outer shell 1, an inner shell 2, and a shielding shell 3. One end of the outer shell 1 has a mating port 101 adapted to mate with a mating shell of a mating connector (not shown). The shielding shell 3 is mounted within the outer shell 1. The inner shell 2 is mounted within the shielding shell 3.

[0046] Figure 5 A longitudinal sectional view of a connector housing assembly according to an exemplary embodiment of the present invention is shown; Figure 6 An exploded view of a connector housing assembly according to an exemplary embodiment of the present invention is shown.

[0047] like Figures 1 to 6 As shown in the illustrated embodiment, the shielding shell 3 includes a peripheral wall 300 and a protrusion 30. The peripheral wall 300 forms an inner cavity 301 adapted to accommodate the inner shell 2. The protrusion 30 is formed radially on the outer surface of the peripheral wall 300 for locking onto the outer shell 1 of the connector. An opening 31 communicating with the inner cavity 301 is formed on the protrusion 30 to allow a portion 21 of the locking protrusion 20 of the inner shell 2 to protrude through the opening 31 and lock onto the outer shell 1 of the connector.

[0048] like Figures 1 to 6As shown in the illustrated embodiment, when the shielding shell 3 is assembled onto the inner shell 2, the portion of the locking protrusion 20 other than the portion 21 is locked onto the inner side of the protrusion 30 and covered and blocked by the protrusion 30. In the illustrated embodiment, the protrusion 30 radially blocks the portion of the locking protrusion 20 other than the portion 21. In the illustrated embodiment, the inner side of the protrusion 30 is recessed relative to the inner surface of the peripheral wall 300, that is, the inner side of the protrusion 30 protrudes radially outward relative to the inner surface of the peripheral wall 300 to facilitate locking onto the portion of the locking protrusion 20 other than the portion 21. In an exemplary embodiment of the invention, the protrusion 30 may be an inwardly concave and outwardly convex structure formed on the peripheral wall 300 by a stamping process.

[0049] like Figures 1 to 6 As shown in the illustrated embodiment, the shielding shell 3 further includes a first contact spring 310, which is connected to the edge of the first opening 301 at one end of the peripheral wall 300 and is bent into the first opening 301 to make electrical contact with the mating shielding shell of the mating connector inserted into the first opening 301 of the shielding shell 3.

[0050] like Figures 1 to 6 As shown in the illustrated embodiment, the shielding shell 3 further includes an end wall 320 and a second contact spring 322. The end wall 320 is connected to the other end of the peripheral wall 300 and has a second opening 321 formed on the end wall 320 to allow the cable assembly 5 to pass through. The second contact spring 322 is connected to the edge of the second opening 321 of the end wall 320 and is bent into the second opening 321 to make electrical contact with the shielding connector 52 on the cable assembly 50 inserted into the second opening 321 of the shielding shell 3.

[0051] like Figures 1 to 6 As shown, in the illustrated embodiment, the protrusion 30 has a locking surface 32 surrounding the opening 31 and adapted to be fastened to the outer shell 1, so that the inner shell 2 and the shielding shell 3 can be fastened to the outer shell 1 simultaneously.

[0052] like Figures 1 to 6 As shown, in the illustrated embodiment, the shielding shell 3 is adapted to be inserted into the outer shell 1 along a first direction (or the insertion direction of the shielding shell 3), and the locking surface 32 of the protrusion 30 is perpendicular to the first direction, and the opening 31 on the protrusion 30 is open outward along a second direction opposite to the first direction (or the pull-out direction of the shielding shell 3, i.e. the direction in which the shielding shell 3 is pulled out of the outer shell 1).

[0053] like Figures 1 to 6 As shown in the illustrated embodiment, the locking surface 32 is provided to protrude radially from the peripheral wall 300, and the protrusion 30 and the peripheral wall 300 are continuously provided along the circumference of the shielding shell 3.

[0054] like Figures 1 to 6 As shown, in an exemplary embodiment of the present invention, a connector housing assembly is also disclosed, comprising: an outer housing 1, an inner housing 2, and a shielding housing 3. One end of the outer housing 1 has a mating port 101 adapted to mate with a mating housing of a mating connector. The shielding housing 3 is installed in the outer housing 1. The inner housing 2 is installed in the shielding housing 3.

[0055] like Figures 1 to 6 As shown in the illustrated embodiment, a locking protrusion 20 is formed on the outer surface of the inner housing 2. A portion 21 of the locking protrusion 20 protrudes through the opening 31 of the protrusion 30 on the shielding shell 3 to lock onto the outer housing 1. The portion of the locking protrusion 20, except for the portion 21, is locked onto the inside of the protrusion 30 and is covered and shielded by the protrusion 30.

[0056] like Figures 1 to 6 As shown in the illustrated embodiment, the mating port 101 of the outer casing 1 includes an outer peripheral wall 11, an inner peripheral wall 12, and a radial wall 13. The inner peripheral wall 12 is located inside the outer peripheral wall 11. The radial wall 13 connects one end of the outer peripheral wall 11 and the inner peripheral wall 12. The shielding shell 3 is installed in the inner peripheral wall 12 of the outer casing 1, and a retaining step 120a is formed on the inner peripheral wall 12. The portion 21 of the locking protrusion 20 is locked onto the retaining step 120a of the inner peripheral wall 12. In the illustrated embodiment, a slot 120 is formed on the inner peripheral wall 12, and the inner surface 120a of one side of the slot 120 constitutes the aforementioned retaining step 120a.

[0057] like Figures 1 to 6 As shown, in the illustrated embodiment, a portion 21 of the latching protrusion 20 has an engagement surface 21a that engages with the anti-retraction step 120a. The protrusion 30 has a locking surface 32 surrounding the opening 31 and locking onto the anti-retraction step 120a. The shielding shell 3 is inserted into the outer shell 1 along a first direction, and the anti-retraction step 120a, the engagement surface 21a of the latching protrusion 20, and the locking surface 32 of the protrusion 30 are perpendicular to the first direction.

[0058] like Figures 1 to 6 As shown in the illustrated embodiment, the latch protrusion 20 and the protrusion 30 are arranged to abut against each other, so that the two are engaged together.

[0059] like Figures 1 to 6 As shown in the illustrated embodiment, the connector housing assembly further includes a sealing ring 8, which is fitted onto the outer side of the inner peripheral wall 12 of the housing 1. The sealing ring 8 is adapted to be pressed between the inner peripheral wall 12 and the mating housing inserted between the outer peripheral wall 11 and the inner peripheral wall 12 to seal the gap between them.

[0060] Figure 7A longitudinal sectional view of a connector housing assembly according to an exemplary embodiment of the present invention, taken from another location.

[0061] like Figures 1 to 7 As shown in the illustrated embodiment, the connector housing assembly further includes a protective end cap 4. The protective end cap 4 includes an end wall 41 and a peripheral wall 42. The peripheral wall 42 of the protective end cap 4 is fitted onto the outer surface of the inner peripheral wall 12 of the housing 1. The end wall 41 of the protective end cap 4 is connected to one end of the peripheral wall 42 and abuts against the outer end face of the inner peripheral wall 12 of the housing 1.

[0062] like Figures 1 to 7 As shown in the illustrated embodiment, a protrusion 42a is formed on the inner surface of the peripheral wall 42 of the protected end cap 4. This protrusion 42a locks onto the inner side surface 120a of the slot 120 in the inner peripheral wall 12. The end face of the other end of the peripheral wall 42 of the protected end cap 4 abuts against the sealing ring 8 to hold the sealing ring 8 in a predetermined position.

[0063] like Figures 1 to 7 As shown in the illustrated embodiment, a guide groove 121 extending along a first direction (i.e., the axial direction of the outer casing 1) is formed on the inner peripheral wall 12 of the outer casing 1, and a guide protrusion 42b adapted to cooperate with the guide groove 121 is formed on the inner surface of the peripheral wall 42 of the protective end cover 4, so as to guide the protective end cover 4 to be installed on the inner peripheral wall 12 of the outer casing 1 along the first direction.

[0064] Figure 8 An exploded view of the connector housing 1, cable assembly 5, cable retaining end cap 6, and cable sealing assembly 7 according to an exemplary embodiment of the present invention is shown.

[0065] Figure 9 An exploded view of the connector housing 1, cable fixing end cap 6, and cable sealing assembly 7 according to an exemplary embodiment of the present invention is shown. Figure 10 An exploded view of a cable retaining end cap 6 and a cable sealing assembly 7 of a connector according to an exemplary embodiment of the present invention is shown. Figure 11 This diagram shows an assembly of the connector housing 1 and the cable fixing end cap 6 according to an exemplary embodiment of the present invention.

[0066] like Figures 1 to 11As shown, in an exemplary embodiment of the present invention, a connector is also disclosed, comprising: a connector housing assembly and a cable assembly 5. The cable assembly 5 includes: a cable 50, a terminal 51, and a shielding connector 52. The terminal 51 is electrically connected to one end of the cable 50. The shielding connector 52 is electrically connected to the shielding layer of the cable 50 and makes electrical contact with the shielding shell 3. Through holes are formed in the outer shell 1 and the inner shell 2 to allow the cable assembly 5 to pass through, and the cable assembly 5 is inserted into the inner shell 2 through the through holes. The inner shell 2 includes a terminal holding portion 210, in which a terminal slot 211 is formed, and the terminal 51 is inserted into the terminal slot 211.

[0067] like Figures 1 to 11 As shown in the illustrated embodiment, the connector further includes a cable retaining end cap 6 and a cable sealing assembly 7. The cable retaining end cap 6 is mounted to the other end of the housing 1 and has a cable hole 611 that allows the cable 50 to pass through. The cable sealing assembly 7 is mounted in a receiving cavity 102 at the other end of the housing 1 and has cable holes 711 and 721 that allow the cable 50 to pass through. The cable retaining end cap 6 is used to secure the cable 50 to the housing 1, and the cable sealing assembly 7 is used to seal the gap between the cable 50 and the housing 1.

[0068] like Figures 1 to 11 As shown, in the illustrated embodiment, the cable retaining end cap 6 has a rotationally symmetric structure such that after rotating 90 degrees about its central axis, the cable retaining end cap 6 coincides with the cable retaining end cap 6 before rotation. Similarly, the cable sealing assembly 7 has a rotationally symmetric structure such that after rotating 90 degrees about its central axis, the cable sealing assembly 7 coincides with the cable sealing assembly 7 before rotation.

[0069] like Figures 1 to 11 As shown in the illustrated embodiment, the connector includes multiple cable assemblies 5, and identification marks 130 for identifying the terminals of the multiple cable assemblies 5 are formed only on the outer surface of the housing 1. In the illustrated embodiment, the identification marks 130 are the letters A, B, C, and D. In the illustrated embodiment, since the cable retaining end cap 6 and the cable sealing assembly 7 have a rotationally symmetrical structure, it is not necessary to identify the orientation of the cable retaining end cap 6 and the cable sealing assembly 7 when inserting the cable 50 into them. Therefore, the assembly of the connector is simpler and more convenient.

[0070] like Figures 1 to 11As shown in the illustrated embodiment, the cable sealing assembly 7 includes an elastic seal 71 and a rigid support 72. The elastic seal 71 has a first positioning hole 712 and a first cable hole 711 allowing the cable 50 to pass through. A first positioning post 722 adapted to be inserted into the first positioning hole 712 is formed on one side of the rigid support 72. A second cable hole 721 allowing the cable 50 to pass through is formed on the rigid support 72. A second positioning post 723 is formed on the other side of the rigid support 72, and a second positioning hole 107 is formed on the bottom surface of the receiving cavity 102 of the housing 1, into which the second positioning post 723 is inserted.

[0071] like Figures 1 to 11 As shown in the illustrated embodiment, the resilient seal 71 is axially pressed between the rigid support 72 and the end wall 61 of the cable fixing end cap 6, and radially pressed between the housing 1 and the cable 50. An engagement protrusion 103 is formed on the outer surface of the other end of the housing 1, and a groove 63 is formed on the peripheral wall 62 of the cable fixing end cap 6. The groove 63 engages with the engagement protrusion 103 to secure the cable fixing end cap 6 to the housing 1.

[0072] like Figures 1 to 11 As shown, in the illustrated embodiment, the resilient seal 71 has a rotationally symmetric structure such that after rotating 90 degrees about its central axis, the resilient seal 71 coincides with the resilient seal 71 before rotation. Similarly, the rigid support 72 has a rotationally symmetric structure such that after rotating 90 degrees about its central axis, the rigid support 72 coincides with the rigid support 72 before rotation.

[0073] like Figures 1 to 11 As shown, in an exemplary embodiment of the present invention, a connector assembly is also disclosed, comprising: the aforementioned connector and a mating connector mating with the connector.

[0074] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this invention.

[0075] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention.

[0076] While some embodiments of the general concept of the invention have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of the invention, the scope of which is defined by the claims and their equivalents.

[0077] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of the invention.

Claims

1. A shielding shell for a high-voltage connector, characterized in that, include: The perimeter wall forms an inner cavity suitable for accommodating the inner housing of the connector; and A protrusion, radially projecting, is formed on the peripheral wall for locking onto the outer housing of the connector. An opening communicating with the inner cavity is formed on the protrusion to allow a portion of the locking protrusion of the inner housing to lock onto the outer housing of the connector via the opening. When the shielding shell is assembled onto the inner shell, the protrusion radially blocks all but one portion of the latch protrusion. The protrusion has a locking surface surrounding the opening, which is adapted to lock onto the outer shell when the portion of the latch protrusion is locked onto the outer shell through the opening, so that the inner shell and the shielding shell can be locked onto the outer shell simultaneously.

2. The shielding shell for a high-voltage connector according to claim 1, characterized in that: The inner side of the protrusion is arranged radially outward relative to the inner surface of the peripheral wall to be adapted to lock onto other parts of the locking protrusion.

3. The shielding shell for a high-voltage connector according to claim 2, characterized in that: The protrusion is an inwardly concave and outwardly convex structure formed on the peripheral wall by a stamping process.

4. The shielding shell for a high-voltage connector according to claim 1, characterized in that, Also includes: The first contact spring is connected to the edge of the first opening at one end of the peripheral wall and is bent into the first opening to make electrical contact with the mating shield of the mating connector inserted into the first opening of the shield.

5. The shielding shell for a high-voltage connector according to claim 4, characterized in that, Also includes: An end wall, connected to the other end of the peripheral wall, and having a second opening formed on the end wall to allow cable assemblies to pass through; and The second contact spring is attached to the edge of the second opening of the end wall and bent into the second opening to make electrical contact with the shielding connector on the cable assembly inserted into the second opening of the shielding shell.

6. The shielding shell for a high-voltage connector according to claim 1, characterized in that: The shielding shell is adapted to be inserted into the outer shell along a first direction, the locking surface of the protrusion is perpendicular to the first direction, and the opening on the protrusion is open outward along a second direction opposite to the first direction.

7. The shielding shell for a high-voltage connector according to claim 1, characterized in that: The locking surface is provided to protrude radially from the peripheral wall.

8. The shielding shell for a high-voltage connector according to any one of claims 1 to 7, characterized in that: The protrusion and the peripheral wall are continuously arranged along the circumference of the shielding shell.

9. A connector housing assembly, characterized in that, include: The outer housing has a mating port at one end that is adapted to mate with the mating housing of the mating connector; The shielding shell according to any one of claims 1 to 8 is installed in the outer casing; and The inner housing is installed within the shielding shell. A locking protrusion is formed on the outer surface of the inner housing. A portion of the locking protrusion latches onto the outer housing via an opening in a protrusion on the shielding shell. The portion of the latch protrusion other than the aforementioned portion is disposed on the inner side of the protrusion and is radially blocked by the protrusion.

10. The connector housing assembly according to claim 9, characterized in that: The mating ports of the outer casing include: outer perimeter wall; The inner peripheral wall is located inside the outer peripheral wall; and A radial wall, connecting one end of the outer peripheral wall and the inner peripheral wall. The shielding shell is installed in the inner peripheral wall of the outer shell, and a backstop step is formed on the inner peripheral wall. The portion of the latch protrusion latches onto the backstop step on the inner peripheral wall.

11. The connector housing assembly according to claim 10, characterized in that: The portion of the latch protrusion has an engagement surface that engages with the anti-reverse step.

12. The connector housing assembly according to claim 11, characterized in that: The protrusion has a locking surface that surrounds the opening and latches onto the anti-reverse step.

13. The connector housing assembly according to claim 12, characterized in that: The shielding shell is inserted into the outer shell along the first direction, and the anti-retraction step, the mating surface of the latch protrusion, and the locking surface of the protrusion are perpendicular to the first direction.

14. The connector housing assembly according to claim 12, characterized in that: The protrusion and the latch protrusion are arranged to abut against each other.

15. A connector, characterized in that, include: The connector housing assembly according to any one of claims 9 to 14; and Cable assembly, including: Cables; Terminals, electrically connected to one end of the cable; and The shielding connector is electrically connected to the shielding layer of the cable and makes electrical contact with the shielding shell. Through holes are formed on the outer shell and the inner shell to allow the cable assembly to pass through, and the cable assembly is inserted into the inner shell through the through holes; The inner housing includes a terminal holding portion, in which a terminal slot is formed, and the terminal is inserted into the terminal slot.

16. The connector according to claim 15, characterized in that, Also includes: A cable fixing end cap is installed on the other end of the housing to fix the cable to the housing; and A cable sealing assembly, installed in a receiving cavity at the other end of the housing, is used to seal the gap between the cable and the housing. The cable fixing end cap has a rotationally symmetrical structure, such that after rotating 90 degrees around its central axis, the cable fixing end cap coincides with the cable fixing end cap before rotation. The cable sealing assembly has a rotationally symmetrical structure, such that after rotating 90 degrees around its central axis, the cable sealing assembly coincides with the cable sealing assembly before rotation.

17. The connector according to claim 15 or 16, characterized in that: The connector includes multiple cable assemblies, and identification marks for identifying the terminals of the multiple cable assemblies are formed only on the outer surface of the housing.

18. The connector according to claim 16, characterized in that: The cable sealing assembly includes an elastic seal and a rigid support assembled together, wherein the elastic seal is axially pressed between the rigid support and the end wall of the cable fixing end cap. The elastic seal has a rotationally symmetrical structure, such that the elastic seal coincides with the elastic seal before rotation after rotating 90 degrees about its central axis. The rigid support has a rotationally symmetric structure, such that after rotating 90 degrees around its central axis, the rigid support coincides with the rigid support before the rotation.

19. A connector assembly, characterized in that, include: The connector according to any one of claims 15 to 18; and A mating connector, adapted to mate with the connector.

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