Connector and electrical connection device

Abstract

This utility model discloses a connector and an electrical connection device. The connector includes: a housing having a hollow cylindrical retainer with a slot formed on the peripheral wall of the retainer; a terminal body disposed in the housing, having a cylindrical body held in the retainer; a sealing ring fitted outside the retainer of the housing for radially pressing between the retainer and the mating housing of a mating connector; a contact inserted into the cylindrical body of the terminal body for electrical contact with the mating terminal of an inserted mating connector; and a position retainer inserted into the slot on the peripheral wall of the retainer. The position retainer is adapted to simultaneously axially abut against one end of the sealing ring and the contact to simultaneously axially position the sealing ring and the contact. This utility model eliminates the need to separately form blocking flanges on the housing and the terminal body to prevent the sealing ring and the contact from disengaging, reducing the manufacturing difficulty and cost of the connector.

Description

Technical Field

[0001] This utility model relates to a connector and an electrical connection device including the connector. Background Technology

[0002] In the prior art, connectors used in charging docks typically include a housing and terminals disposed within the housing. The terminals include a terminal body and a resilient contact inserted into a cylindrical mating end of the terminal body. This resilient contact is used for electrical contact with the mating terminals of an inserted mating connector to electrically connect the terminal body and the mating terminals. Furthermore, in the prior art, the housing has an insertion cavity allowing insertion of the mating housing of the mating connector and a cylindrical retainer located within the insertion cavity. The cylindrical mating end of the terminal body is retained within the cylindrical retainer of the housing. A sealing ring is fitted externally to the cylindrical retainer, and this sealing ring is adapted to be radially pressed between the cylindrical retainer and the mating housing to achieve a seal between the two.

[0003] In existing technologies, a blocking flange needs to be formed in the cylindrical mating end to prevent the resilient contact from detaching from the cylindrical mating end. Furthermore, a blocking flange needs to be formed in the cylindrical retainer to prevent the sealing ring from detaching from the cylindrical retainer. However, forming blocking flanges in both the cylindrical mating end of the terminal and the cylindrical retainer of the housing is very difficult and costly, which reduces manufacturing efficiency and increases manufacturing costs. Utility Model Content

[0004] The purpose of this utility model 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 present invention, a connector is provided. The connector includes: a housing having a hollow cylindrical retainer with a slot formed on the peripheral wall of the retainer; a terminal body disposed within the housing, having a cylindrical portion retained within the retainer; a sealing ring fitted over the outside of the retainer of the housing for radially pressing between the retainer and a mating housing of a mating connector; a contact element inserted into the cylindrical portion of the terminal body for electrical contact with a mating terminal of an inserted mating connector; and a position retainer inserted into the slot on the peripheral wall of the retainer. The position retainer is adapted to simultaneously axially abut against one end of both the sealing ring and the contact element to simultaneously axially position the sealing ring and the contact element.

[0006] According to an exemplary embodiment of the present invention, the slot has an inlet and an outlet, and a pair of arcuate walls located between the inlet and the outlet; the position retainer is Ω-shaped and includes: a pair of arcuate arms, each abutting against the inner side of the pair of arcuate walls; a U-shaped portion, both ends of which are connected to one end of the pair of arcuate arms; and a pair of snap-fit ​​portions, each connected to the other end of the pair of arcuate arms. The U-shaped portion is located in the inlet of the slot and protrudes from the inlet of the slot, and the U-shaped portion is adapted to simultaneously abut against one end of the sealing ring and the contact member; the pair of snap-fit ​​portions are located in the outlet of the slot and engage with the ends of the pair of arcuate walls, and the snap-fit ​​portions are adapted to simultaneously abut against one end of the sealing ring and the contact member; the pair of arcuate arms of the position retainer are adapted to axially abut against one end of the contact member.

[0007] According to another exemplary embodiment of the present invention, a groove is formed on the snap-fit ​​portion of the position retainer, and the end of the arc-shaped wall is engaged into the groove of the snap-fit ​​portion to lock the position retainer in the slot of the retainer.

[0008] According to another exemplary embodiment of the present invention, the contact includes a pair of C-rings and a plurality of elastic arms connected between the pair of C-rings, the plurality of elastic arms being spaced apart in the circumferential direction of the contact, and the plurality of elastic arms being adapted to be pressed between the inner side of the cylindrical body of the terminal body and the outer side of the mating terminal to electrically connect the terminal body and the mating terminal.

[0009] According to another exemplary embodiment of the present invention, the housing has a protrusion protruding into the inner cavity of the cylindrical body, the protrusion being adapted to axially abut against the end face of one C-ring of the contact member, and the position retainer being adapted to axially abut against the end face of the other C-ring of the contact member to axially position the contact member.

[0010] According to another exemplary embodiment of the present invention, a positioning flange is formed on the outer side of the retainer, and the positioning flange axially abuts against the other end of the sealing ring, so that the sealing ring is axially positioned between the position retainer and the positioning flange.

[0011] According to another exemplary embodiment of the present invention, an insertion cavity is formed in the housing to allow insertion of a mating housing, the retainer is located in the insertion cavity of the housing and is adapted to be inserted into the mating cavity of the mating housing; an insertion port corresponding to a slot on the retainer is formed on the outer peripheral wall of the insertion cavity of the housing, and the position retainer is inserted into the slot on the retainer via the insertion port.

[0012] According to another exemplary embodiment of the present invention, an elastic buckle is formed in the insertion cavity of the housing, the elastic buckle being adapted to engage with a slot on a mating housing inserted into the insertion cavity to lock the housing and the mating housing together.

[0013] According to another exemplary embodiment of the present invention, the terminal body further has a plate-shaped body, the cylindrical body is located at one end of the plate-shaped body, and the other end of the plate-shaped body extends out of the housing for electrical connection to an electrical transmission element.

[0014] According to another exemplary embodiment of the present invention, the other end of the plate-like body of the terminal body is adapted to be welded, crimped or riveted to the electrical transmission element.

[0015] According to another exemplary embodiment of the present invention, the connector further includes an electrical transmission element electrically connected to the other end of the plate-shaped body of the terminal body, the electrical transmission element being a cable or a flat conductor.

[0016] According to another exemplary embodiment of the present invention, the extending direction of the cylindrical body of the terminal body is perpendicular to or at a predetermined angle to the extending direction of the plate-shaped body of the terminal body; or the extending direction of the cylindrical body of the terminal body is the same as or parallel to the extending direction of the plate-shaped body of the terminal body.

[0017] According to another exemplary embodiment of the present invention, the cylindrical body of the terminal body is perpendicular to the surface of the plate-shaped body of the terminal body, so that the terminal body is L-shaped.

[0018] According to another exemplary embodiment of the present invention, the terminal body and the contact are both integrally stamped parts.

[0019] According to another exemplary embodiment of the present invention, the housing includes: a first housing portion, in which the cylindrical body of the terminal body is located; and a second housing portion, one end of which is connected to one end of the first housing portion, wherein the axial directions of the first housing portion and the second housing portion are perpendicular to each other, such that the housing is L-shaped.

[0020] According to another exemplary embodiment of the present invention, the connector further includes: an insulating sleeve, one end of which is detachably fitted onto the other end of the second housing portion of the housing, and the other end of the plate-like body of the terminal body is accommodated in one end of the insulating sleeve.

[0021] According to another exemplary embodiment of the present invention, the connector further includes: an electrical transmission element electrically connected to the other end of the plate-like body of the terminal body and led out from the other end of the insulating sleeve.

[0022] According to another exemplary embodiment of the present invention, the connector further includes a sealing ring, which is mounted in an annular mounting groove on the other end of the second housing portion, the sealing ring being radially pressed between the insulating sleeve and the second housing portion to achieve a seal between the two.

[0023] According to another exemplary embodiment of the present invention, the connector further includes: a seal disposed in the other end of the insulating sleeve and having a through hole that allows the electrical transmission element to pass through, the seal being pressed between the insulating sleeve and the electrical transmission element to achieve a seal between the two.

[0024] According to another exemplary embodiment of the present invention, a plurality of protrusions are formed on the other end of the second housing portion at intervals in its circumferential direction, and a plurality of slots are formed on one end of the insulating sleeve at intervals in its circumferential direction. The plurality of protrusions and the plurality of slots respectively engage to fix the insulating sleeve to the second housing portion.

[0025] According to another exemplary embodiment of the present invention, the housing is an injection molded part injected onto the terminal body, such that the housing and the terminal body become an integral part.

[0026] According to another aspect of the present invention, an electrical connection device is provided. The electrical connection device includes: an insulating housing; and the aforementioned connector, which is detachably inserted into the insulating housing.

[0027] According to an exemplary embodiment of the present invention, the electrical connection device is a charging base or a charging gun.

[0028] In the foregoing exemplary embodiments of the present invention, by inserting a position retainer into the housing, the contact and the sealing ring can be held in a predetermined installation position without the need to form blocking flanges on the housing and terminal body to prevent the sealing ring and the contact from detaching, thus reducing the manufacturing difficulty and cost of the connector.

[0029] Other objects and advantages of the present 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

[0030] Figure 1 A perspective view of a connector according to an exemplary embodiment of the present invention is shown;

[0031] Figure 2 Showing an anatomical view of a connector according to an exemplary embodiment of the present invention;

[0032] Figure 3An exploded view of a connector according to an exemplary embodiment of the present invention is shown;

[0033] Figure 4 A perspective view of a connector according to an exemplary embodiment of the present invention is shown, wherein the position retainer has not yet been inserted into the housing;

[0034] Figure 5 This shows a horizontal cross-sectional view of a connector according to an exemplary embodiment of the present invention, wherein the position retainer has not yet been inserted into the housing;

[0035] Figure 6 This shows a horizontal cross-sectional view of a connector according to an exemplary embodiment of the present invention, wherein a position retainer has been inserted into the housing;

[0036] Figure 7 This shows a vertical sectional view of a connector according to an exemplary embodiment of the present invention, wherein the position retainer has not yet been inserted into the housing;

[0037] Figure 8 This shows a vertical sectional view of a connector according to an exemplary embodiment of the present invention, wherein a position retainer has been inserted into the housing. Detailed Implementation

[0038] The technical solution of this utility model 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 this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0039] 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.

[0040] According to a general technical concept of this utility model, a connector is provided. The connector includes: a housing having a hollow cylindrical retainer with a slot formed on the peripheral wall of the retainer; a terminal body disposed in the housing, having a cylindrical body held in the retainer; a sealing ring fitted outside the retainer of the housing for radially pressing between the retainer and the mating housing of a mating connector; a contact element inserted into the cylindrical body of the terminal body for electrical contact with the mating terminals of an inserted mating connector; and a position retainer element inserted into the slot on the peripheral wall of the retainer. The position retainer element is adapted to simultaneously axially abut against one end of both the sealing ring and the contact element to simultaneously axially position the sealing ring and the contact element.

[0041] According to another general technical concept of this utility model, an electrical connection device is provided. The electrical connection device includes: an insulating shell; and the aforementioned connector, which is detachably inserted into the insulating shell.

[0042] Figure 1 A perspective view of a connector according to an exemplary embodiment of the present invention is shown; Figure 2 Showing an anatomical view of a connector according to an exemplary embodiment of the present invention; Figure 3 An exploded view of a connector according to an exemplary embodiment of the present invention is shown; Figure 4 A perspective view of a connector according to an exemplary embodiment of the present invention is shown, wherein the position retainer 5 has not yet been inserted into the housing 1; Figure 5 This shows a horizontal cross-sectional view of a connector according to an exemplary embodiment of the present invention, wherein the position retainer 5 has not yet been inserted into the housing 1; Figure 6 This shows a horizontal cross-sectional view of a connector according to an exemplary embodiment of the present invention, wherein the position retainer 5 has been inserted into the housing 1; Figure 7 This shows a vertical sectional view of a connector according to an exemplary embodiment of the present invention, wherein the position retainer 5 has not yet been inserted into the housing 1; Figure 8 This shows a vertical sectional view of a connector according to an exemplary embodiment of the present invention, wherein the position retainer 5 has been inserted into the housing 1.

[0043] like Figures 1 to 8As shown, in an exemplary embodiment of this utility model, a connector is disclosed. The connector includes: a housing 1, a terminal body 2, a contact 3, a sealing ring 4, and a position retainer 5. The housing 1 has a hollow cylindrical retainer 10 and a slot 100 formed on the peripheral wall of the retainer 10. The terminal body 2 is disposed in the housing 1 and has a cylindrical body 21 held in the retainer 10. The sealing ring 4 is fitted onto the outside of the retainer 10 of the housing 1 for radial compression between the retainer 10 and the mating housing (not shown) of a mating connector (not shown). The contact 3 is inserted into the cylindrical body 21 of the terminal body 2 for electrical contact with the mating terminals (not shown) of the inserted mating connector. The position retainer 5 is inserted into the slot 100 on the peripheral wall of the retainer 10. The position retainer 5 is adapted to simultaneously abut against one end of the sealing ring 4 and the contact 3 in the axial direction, so as to simultaneously position the sealing ring 4 and the contact 3 in the axial direction, so as to prevent the sealing ring 4 from detaching from the retainer 10 of the housing 1 and prevent the contact 3 from detaching from the cylindrical body 21 of the terminal body 2.

[0044] like Figures 1 to 8 As shown, in the illustrated embodiment, the slot 100 has an inlet 101 and an outlet 102, and a pair of arcuate walls 103 located between the inlet 101 and the outlet 102. The position retainer 5 is Ω-shaped. The position retainer 5 includes a pair of arcuate arms 53, a U-shaped portion 51, and a pair of latching portions 52. The pair of arcuate arms 53 abut against the inner sides of the pair of arcuate walls 103 of the slot 100. The two ends of the U-shaped portion 51 are connected to one end of each of the pair of arcuate arms 53. The pair of latching portions 52 are connected to the other ends of each of the pair of arcuate arms 53. The U-shaped portion 51 is located in and protrudes from the inlet 101 of the slot 100, and is adapted to simultaneously abut axially against one end of both the sealing ring 4 and the contact member 3. A pair of latching portions 52 are located in the outlet 102 of the slot 100 and respectively engage with the ends of a pair of arcuate walls 103. The latching portions 52 are adapted to simultaneously abut axially against one end of the sealing ring 4 and the contact member 3. A pair of arcuate arms 53 of the position retainer 5 are adapted to abut axially against one end of the contact member 3.

[0045] like Figures 1 to 8 As shown, in the illustrated embodiment, a groove 52a is formed on the snap-fit ​​portion 52 of the position retainer 5, and the end of the arcuate wall 103 is engaged in the groove 52a of the snap-fit ​​portion 52 to lock the position retainer 5 in the slot 100 of the retainer 10.

[0046] like Figures 1 to 8As shown, in the illustrated embodiment, the contact 3 includes a pair of C-rings 31 and a plurality of elastic arms 30 connected between the pair of C-rings 31. The plurality of elastic arms 30 are spaced apart in the circumferential direction of the contact 3. The plurality of elastic arms 30 are adapted to be pressed between the inner side of the cylindrical body 21 of the terminal body 2 and the outer side of the mating terminal to electrically connect the terminal body 2 and the mating terminal.

[0047] like Figures 1 to 8 As shown in the illustrated embodiment, the housing 1 has a protrusion 16 protruding into the inner cavity of the cylindrical body 21. The protrusion 16 is adapted to axially abut against the end face of one C-ring 31 of the contact member 3, and the position retainer 5 is adapted to axially abut against the end face of the other C-ring 31 of the contact member 3 to axially position the contact member 3.

[0048] like Figures 1 to 8 As shown in the illustrated embodiment, a positioning flange 10a is formed on the outer side of the retainer 10. The positioning flange 10a axially abuts against the other end of the sealing ring 4, so that the sealing ring 4 is axially positioned between the position retainer 5 and the positioning flange 10a.

[0049] like Figures 1 to 8 As shown in the illustrated embodiment, an insertion cavity 14 is formed in the housing 1 to allow insertion of a mating housing. The retainer 10 is located in the insertion cavity 14 of the housing 1 and is adapted to be inserted into the mating cavity of the mating housing. An insertion port 15 corresponding to a slot 100 on the retainer 10 is formed on the outer peripheral wall of the insertion cavity 14 of the housing 1. The position retainer 5 is inserted into the slot 100 on the retainer 10 via the insertion port 15.

[0050] like Figures 1 to 8 As shown, in the illustrated embodiment, an elastic buckle 13 is formed in the insertion cavity 14 of the housing 1. The elastic buckle 13 is adapted to engage with a slot (not shown) on the mating housing of the insertion cavity 14 of the housing 1 to lock the housing 1 and the mating housing together.

[0051] like Figures 1 to 8 As shown, in the illustrated embodiment, the terminal body 2 also has a plate-shaped body 22, with a cylindrical body 21 located at one end of the plate-shaped body 22, and the other end of the plate-shaped body 22 extending from the housing 1 for electrical connection to an electrical transmission element (not shown), which can be a cable or a flat conductor.

[0052] like Figures 1 to 8 As shown, in the illustrated embodiment, the other end of the plate-shaped body 22 of the terminal body 2 is adapted to be welded, crimped, or riveted to the electrical transmission component.

[0053] like Figures 1 to 8 As shown, in the illustrated embodiment, the connector further includes an electrical transmission element that is electrically connected to the other end of the plate-shaped body 22 of the terminal body 2.

[0054] like Figures 1 to 8 As shown in the illustrated embodiment, the extending direction of the cylindrical body 21 of the terminal body 2 is perpendicular to or at a predetermined angle to the extending direction of the plate-shaped body 22 of the terminal body 2. However, the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the extending direction of the cylindrical body 21 of the terminal body 2 may be the same as or parallel to the extending direction of the plate-shaped body 22 of the terminal body 2.

[0055] like Figures 1 to 8 As shown in the illustrated embodiment, the cylindrical body 21 of the terminal body 2 is perpendicular to the surface of the plate-shaped body 22 of the terminal body 2, making the terminal body 2 L-shaped.

[0056] like Figures 1 to 8 As shown in the illustrated embodiment, terminal body 2 and contact 3 are both integrally stamped parts.

[0057] like Figures 1 to 8 As shown in the illustrated embodiment, the housing 1 includes a first housing portion 11 and a second housing portion 12. The cylindrical body 21 of the terminal body 2 is located in the first housing portion 11. One end of the second housing portion 12 is connected to one end of the first housing portion 11. The axial directions of the first housing portion 11 and the second housing portion 12 are perpendicular to each other, making the housing 1 L-shaped.

[0058] like Figures 1 to 8 As shown, in the illustrated embodiment, the connector further includes an insulating sleeve 9. One end of the insulating sleeve 9 is detachably fitted onto the other end of the second housing portion 12 of the housing 1. The other end of the plate-like body 22 of the terminal body 2 is accommodated in one end of the insulating sleeve 9.

[0059] like Figures 1 to 8 As shown, in the illustrated embodiment, the connector also includes an electrical transmission element (not shown) that is electrically connected to the other end of the plate-like body 22 of the terminal body 2 and led out from the other end of the insulating sleeve 9.

[0060] like Figures 1 to 8 As shown in the illustrated embodiment, the connector further includes a sealing ring 7, which is mounted in an annular mounting groove on the other end of the second housing portion 12. The sealing ring 7 is radially pressed between the insulating sleeve 9 and the second housing portion 12 to achieve a seal between them.

[0061] like Figures 1 to 8 As shown in the illustrated embodiment, the connector further includes a seal 8 disposed in the other end of the insulating sleeve 9 and forming a through-hole that allows the electrical transmission element to pass through. The seal 8 is pressed between the insulating sleeve 9 and the electrical transmission element to achieve a seal between the two.

[0062] like Figures 1 to 8 As shown in the illustrated embodiment, a plurality of protrusions 1a are formed on the other end of the second housing portion 12 at intervals in its circumferential direction, and a plurality of slots 9a are formed on one end of the insulating sleeve 9 at intervals in its circumferential direction. The plurality of protrusions 1a and the plurality of slots 9a respectively engage to fix the insulating sleeve 9 to the second housing portion 12.

[0063] like Figures 1 to 8 As shown in the illustrated embodiment, the housing 1 is an injection-molded part injected onto the terminal body 2, making the housing 1 and the terminal body 2 a single unit. This reduces manufacturing costs and improves manufacturing efficiency.

[0064] like Figures 1 to 8 As shown, in another exemplary embodiment of this utility model, an electrical connection device is also disclosed. The electrical connection device includes an insulating shell (not shown) and the aforementioned connector. The connector is detachably inserted into the insulating shell.

[0065] like Figures 1 to 8 As shown in the illustrated embodiment, the aforementioned electrical connection device can be a charging dock or a charging gun.

[0066] 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 utility model.

[0067] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0068] While some embodiments of the general concept of this utility model 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 this utility model, the scope of which is defined by the claims and their equivalents.

[0069] 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 this invention.

Claims

1. A connector characterized by comprising: include: The housing (1) has a hollow cylindrical retainer (10) and a slot (100) is formed on the peripheral wall of the retainer (10); Terminal body (2), disposed in the housing (1), having a cylindrical body (21) held in the retainer (10); A sealing ring (4) is fitted on the outside of the retainer (10) of the housing (1) for radial compression between the retainer (10) and the mating housing of the mating connector; The contact (3) is inserted into the cylindrical body (21) of the terminal body (2) for electrical contact with the mating terminals of the inserted mating connector; and The position retainer (5) is inserted into the slot (100) on the peripheral wall of the retainer (10). The position retainer (5) is adapted to simultaneously abut against one end of the sealing ring (4) and the contact member (3) in the axial direction, so as to simultaneously position the sealing ring (4) and the contact member (3) in the axial direction.

2. The connector according to claim 1, characterized in that: The slot (100) has an inlet (101) and an outlet (102) and a pair of arcuate walls (103) located between the inlet (101) and the outlet (102); The position holding member (5) is Ω-shaped and includes: A pair of arc-shaped arms (53) abut against the inner sides of the pair of arc-shaped walls (103); The U-shaped portion (51) has its two ends connected to one end of the pair of arc-shaped arms (53); and A pair of latching parts (52) are respectively connected to the other end of the pair of arc-shaped arms (53). The U-shaped portion (51) is located in the entrance (101) of the slot (100) and protrudes from the entrance (101) of the slot (100). The U-shaped portion (51) is adapted to simultaneously abut axially against one end of the sealing ring (4) and the contact member (3). The pair of latching portions (52) are located in the outlet (102) of the slot (100) and respectively engage with the ends of the pair of arc-shaped walls (103). The latching portions (52) are adapted to simultaneously abut axially against one end of the sealing ring (4) and the contact member (3). A pair of arcuate arms (53) of the position retainer (5) are adapted to axially abut against one end of the contact (3).

3. The connector according to claim 2, characterized in that: A slot (52a) is formed on the snap-fit ​​portion (52) of the position retainer (5), and the end of the arc-shaped wall (103) is engaged in the slot (52a) of the snap-fit ​​portion (52) to lock the position retainer (5) in the slot (100) of the retainer (10).

4. The connector according to claim 1, characterized in that: The contact (3) includes a pair of C-rings (31) and a plurality of elastic arms (30) connected between the pair of C-rings (31). The plurality of elastic arms (30) are spaced apart in the circumferential direction of the contact (3). The plurality of elastic arms (30) are adapted to be pressed between the inner side of the cylindrical body (21) of the terminal body (2) and the outer side of the mating terminal to electrically connect the terminal body (2) and the mating terminal.

5. The connector according to claim 4, characterized in that: The housing (1) has a protrusion (16) protruding into the inner cavity of the cylindrical body (21), the protrusion (16) being adapted to axially abut against the end face of one C-ring (31) of the contact member (3), and the position retainer (5) being adapted to axially abut against the end face of the other C-ring (31) of the contact member (3) to axially position the contact member (3).

6. The connector according to claim 1, characterized in that: A positioning flange (10a) is formed on the outer side of the retainer (10), and the positioning flange (10a) abuts axially against the other end of the sealing ring (4), so that the sealing ring (4) is axially positioned between the position retainer (5) and the positioning flange (10a).

7. The connector according to claim 1, characterized in that: An insertion cavity (14) is formed in the housing (1) to allow insertion of the mating housing, and the retainer (10) is located in the insertion cavity (14) of the housing (1) and is adapted to be inserted into the mating cavity of the mating housing; An insertion port (15) corresponding to a slot (100) on the retainer (10) is formed on the outer peripheral wall of the insertion cavity (14) of the housing (1), and the position retainer (5) is inserted into the slot (100) on the retainer (10) via the insertion port (15).

8. The connector according to claim 7, characterized in that: An elastic buckle (13) is formed in the insertion cavity (14) of the housing (1), the elastic buckle (13) being adapted to engage with a slot on a mating housing inserted into the insertion cavity (14) to lock the housing (1) and the mating housing together.

9. The connector according to claim 1, characterized in that: The terminal body (2) also has a plate-shaped body (22), with a cylindrical body (21) located at one end of the plate-shaped body (22) and the other end of the plate-shaped body (22) extending out of the housing (1) for electrical connection to an electrical transmission element.

10. The connector according to claim 9, characterized in that: The other end of the plate-shaped body (22) of the terminal body (2) is adapted to be welded, crimped or riveted to the electrical transmission element.

11. The connector of claim 9, wherein, Also includes: An electrical transmission component is electrically connected to the other end of the plate-shaped body (22) of the terminal body (2). The electrical transmission component is a cable or a flat conductor.

12. The connector according to claim 9, characterized in that: The extending direction of the cylindrical body (21) of the terminal body (2) is perpendicular to or at a predetermined angle to the extending direction of the plate-shaped body (22) of the terminal body (2); or The extension direction of the cylindrical body (21) of the terminal body (2) is the same as or parallel to the extension direction of the plate-shaped body (22) of the terminal body (2).

13. The connector according to claim 9, characterized in that: The cylindrical body (21) of the terminal body (2) is perpendicular to the surface of the plate-shaped body (22) of the terminal body (2), so that the terminal body (2) is L-shaped.

14. The connector of claim 13, wherein: The terminal body (2) and the contact (3) are both integral stamped parts.

15. The connector according to claim 13, characterized in that: The housing (1) includes: The first housing portion (11), the cylindrical body (21) of the terminal body (2) is located in the first housing portion (11); and The second housing part (12) has one end connected to one end of the first housing part (11). The first housing portion (11) and the second housing portion (12) are perpendicular to each other in axis, so that the housing (1) is L-shaped.

16. The connector of claim 15, wherein, Also includes: An insulating sleeve (9), one end of which is detachably fitted onto the other end of the second housing portion (12) of the housing (1), The other end of the plate-shaped body (22) of the terminal body (2) is accommodated in one end of the insulating sleeve (9).

17. The connector of claim 16, wherein, Also includes: An electrical transmission element is electrically connected to the other end of the plate-shaped body (22) of the terminal body (2) and led out from the other end of the insulating sleeve (9).

18. The connector of claim 16, wherein, Also includes: The sealing ring (7) is installed in an annular mounting groove on the other end of the second housing part (12). The sealing ring (7) is radially pressed between the insulating sleeve (9) and the second housing portion (12) to achieve a seal between the two.

19. The connector of claim 16, wherein, Also includes: A sealing element (8) is disposed in the other end of the insulating sleeve (9) and has a through hole that allows the electrical transmission element to pass through. The seal (8) is pressed between the insulating sleeve (9) and the electrical transmission element to achieve a seal between the two.

20. The connector according to claim 16, characterized in that: A plurality of protrusions (1a) are formed at intervals in the circumferential direction on the other end of the second housing part (12), and a plurality of slots (9a) are formed at intervals in the circumferential direction on one end of the insulating sleeve (9). The plurality of protrusions (1a) and the plurality of slots (9a) respectively engage to fix the insulating sleeve (9) to the second housing part (12).

21. The connector according to any one of claims 1-20, characterized in that: The housing (1) is an injection molded part that is injected onto the terminal body (2), so that the housing (1) and the terminal body (2) become a single piece.

22. An electrical connection device, characterised in that include: Insulating shell; and The connector according to any one of claims 1-21 is detachably inserted into the insulating shell.

23. An electrical connection device according to claim 22, characterised in that: The electrical connection device is a charging base or a charging gun.

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