Socket housing and socket

Abstract

To provide a socket housing and a socket that can drain accumulated water, the socket housing and the socket being used in the field of charging electric vehicles.SOLUTION: A socket housing 1 includes a base portion 10 and a first wall portion 11 in the form of a hollow cylindrical wall projecting continuously from a first side of the base portion 10, the first wall portion 11 includes a first drainage portion 12 that intersects with the lowermost portion of the base portion and opens outwardly, the first drainage portion 12 is in the form of a passage extending obliquely from an inner root portion of the first wall portion 11 to an outer root portion of the first wall portion 11.SELECTED DRAWING: Figure 1(a)

Description

[Technical field]

[0001] The present disclosure relates to a socket housing and a socket, in particular to a socket housing and a socket used for charging electric vehicles in the technical field of charging equipment for new energy vehicles. [Background technology]

[0002] The socket is used to plug in and mate with a mating electronic device to make an electrical connection therebetween. In the prior art, an electric vehicle is provided with a charging socket that mates with an external charging gun. The charging socket typically includes a socket housing, a terminal mounting base, and terminals. The terminal mounting base is fixedly attached to the socket housing, and the terminals are attached to the terminal mounting base. The housing of the charging socket is fixed to the sheet metal of the vehicle body. Specifically, to charge an electric vehicle, a charging plug (also known as a charging gun) of a charging pile is generally inserted into a socket provided on the body of the electric vehicle to perform charging. As more and more electric vehicles are put into operation, how to improve the safety performance of electric vehicles during charging has become a factor that needs to be considered. Due to the complexity of the usage situation, especially in the prior art, when the charging socket is used outdoors, the electric vehicle tends to pass through adverse environmental conditions such as rain, humidity, splashing water, etc., which often causes water accumulation in the charging plug and the risk of flooding the housing of the charging plug. However, if the water entering the charging socket is not drained in a timely manner and accumulates to a certain extent, for example, the metal oxidation of the conductive hole of the charging socket may be accelerated by the accumulation of water, resulting in poor contact between the charging terminal of the charging gun and the conductive hole of the charging socket, and heat may be generated between the charging gun and the charging socket during charging. Alternatively, or in addition to that, the accumulation of water may cause a short circuit, which may damage the charging gun and the charging socket, thus bringing about a potential safety hazard to the electric vehicle.

[0003] In the prior art, in order to prevent water from accumulating in the internal cavity of the terminal mounting base, a drain hole that opens toward the side of the vehicle body where the sheet metal is arranged is usually formed in the peripheral wall of the terminal mounting base, and the water in the internal cavity is directly discharged through the inside of the housing and enters a drainage device (such as a corrugated pipe) that is arranged inside the vehicle body and is in water-tight communication with the drain hole. However, in some applications, the discharged water cannot enter the inside of the vehicle body on the side where the sheet metal is arranged, and the constraints on the shape and size of the mounting space do not allow the presence of excessive extra accessories, limiting the applications of existing charging sockets. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE DISCLOSURE Embodiments of the present disclosure aim to solve at least one aspect of the above problems and shortcomings of the prior art by providing a socket housing and a socket, each of which has a simplified structure and is capable of draining accumulated water. [Means for solving the problem]

[0005] In order to achieve the above objectives, the utility model is implemented by the following technical solutions:

[0006] According to a first aspect of the present disclosure, there is provided a socket housing comprising a base portion and a first wall portion in the form of a hollow cylindrical wall projecting continuously from a first side of the base portion. In an exemplary embodiment, the first wall portion comprises a first drainage portion that intersects with the base portion and opens outwardly, the first drainage portion being in the form of a passageway extending obliquely from an inner root portion of the first wall portion to an outer root portion of the first wall portion. Thus, the first drainage portion of the first wall portion intersects with a lowermost portion of the base portion and opens outwardly.

[0007] In an exemplary embodiment, the socket housing further includes a plurality of spaced apart second walls surrounded by the first wall, each second wall being in the form of a hollow cylindrical wall projecting continuously from the first side of the base.

[0008] In an exemplary embodiment, each second wall portion includes a respective second drainage portion at an intersection with the base portion, each second drainage portion being in the form of a passage extending from the inside to the outside of the respective second wall portion, and each second drainage portion extending continuously along the axial direction of the respective second wall portion to the free end of the respective second wall portion.

[0009] In an exemplary embodiment, the first drainage portion extends continuously from an inlet portion of the first wall portion located at an inner root portion intersecting with the base portion to an outlet portion of the first wall portion located at an outer root portion intersecting with the base portion, and the first drainage portion includes a plurality of channel portions connected to each other, and the angle of each channel portion relative to the axial direction of the first wall portion gradually increases from the inlet portion to the outlet portion.

[0010] In an exemplary embodiment, the inlet portion comprises a groove extending axially along the first wall and having a cross-section that gradually increases from the inside to the outside of the first wall.

[0011] In an exemplary embodiment, the groove includes a guide ramp at the bottom, with a higher end of the guide ramp distal to the inlet and a lower end of the guide ramp proximal to the inlet.

[0012] In an exemplary embodiment, the outlet portion is provided with an inverted funnel shape with an outwardly expanding cross section.

[0013] In an exemplary embodiment, before the outlet section, the cross-sectional area of ​​the first drainage section gradually decreases from the inlet section to the outlet section.

[0014] In an exemplary embodiment, the first drainage section includes an outwardly extending bend in front of the outlet section.

[0015] In an exemplary embodiment, rounded corners are formed on the edges of both the inlet and outlet sections.

[0016] In an exemplary embodiment, the outlet section includes a guard that at least partially surrounds the outlet section.

[0017] In an exemplary embodiment, the base and first wall are a single molded plastic part.

[0018] According to a second aspect of the present disclosure, there is provided a socket for coupling to a sheet metal part of a vehicle body, the socket comprising: a socket housing as described above coupled to the sheet metal part of the vehicle body, the socket housing having a second side opposite to the first side of the base portion arranged toward the sheet metal part and cooperatively coupled to the sheet metal part; and a plurality of connection terminals received in one-to-one correspondence in holes defined by a plurality of second wall portions.

[0019] In an exemplary embodiment, the base portion is at a predetermined first angle (a1) relative to the sheet metal part, and the first drainage portion is inclined at an acute angle within an angular range greater than the first angle (a1) relative to the axial direction of the first wall portion.

[0020] In an exemplary embodiment, each second wall portion includes a stopper projecting radially inward at a free end, the stopper configured to prevent the respective terminal from moving away from the hole defined by the second wall portion.

[0021] In an exemplary embodiment, each stopper includes a continuous inner circumferential surface, and each stopper extends circumferentially around the respective second wall portion in a closed loop configuration.

[0022] In an exemplary embodiment, the base portion is coupled to the sheet metal part on the second side by at least one of a snap fit and a threaded connection.

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, and together with the description, illustrate certain aspects of the subject matter disclosed herein and facilitate the understanding of certain principles related to the disclosed embodiments. [Brief description of the drawings]

[0024] [Figure 1(a)] 1A is a schematic perspective view of a socket housing according to an embodiment; FIG. [Figure 1(b)] 1A and 1B are schematic diagrams of a socket housing according to an embodiment, with FIG. 1B being a front view. [Diagram 2] FIG. 2 is a schematic cross-sectional view of the socket housing of FIG. 1(b) taken along line AA according to an embodiment. [Diagram 3] FIG. 3 is a partial enlarged view of area O of the cross-sectional view of FIG. 2 according to an embodiment. [Figure 4(a)] 4A and 4B are schematic diagrams of a socket according to an embodiment, with FIG. 4(a) being a schematic right side view. [Figure 4(b)] 4A and 4B are schematic diagrams of a socket according to an embodiment, and FIG. 4B is a perspective view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The present disclosure will be described in detail below with reference to the accompanying drawings, which are provided as examples of the present disclosure for those skilled in the art to implement the present disclosure. It should be noted that the following drawings and examples are not intended to limit the scope of the present disclosure to only a single embodiment, but are intended to enable other embodiments by replacing some or all of the elements described or illustrated. Furthermore, in a state in which some elements of the present disclosure can be partially or completely implemented using known components, only those parts of such known components necessary for understanding the present disclosure will be described, and detailed descriptions of other parts of such known components will be omitted to avoid confusion with the present disclosure.

[0026] Unless otherwise specified herein, those skilled in the art will understand that an embodiment described as being implemented in software should not be limited thereto, but can include embodiments implemented in hardware, or a combination of software and hardware, and vice versa. In this specification, embodiments showing individual parts should not be considered limiting. However, unless otherwise expressly stated herein, the present disclosure is intended to encompass other embodiments including multiple identical components, and vice versa. Furthermore, applicants do not intend to ascribe non-generic or special meanings to the terms in this specification or claims, unless otherwise expressly stated. In addition, the present disclosure encompasses, by way of example, current and future known equivalents of known components described herein.

[0027] Unless otherwise specified, terms such as "lower" and "upper", "upper / upper side" and "lower / lower side" described in the contents recorded in this utility model regarding the socket housing are relative concepts. Specifically, the upper and lower directions shown in Figs. 1 and 2 represent the upper end and lower end, respectively. That is, accumulated water naturally slides down from top to bottom according to its own weight and is discharged. In this embodiment, the axial direction refers to the direction in which the first wall portion shown in Figs. 1 and 2 protrudes. The circumferential direction refers to the circumferential direction shown in the figures.

[0028] Fig. 1 is a schematic diagram of a socket housing according to an embodiment, Fig. 1(a) being a schematic perspective view and Fig. 1(b) being a front view, Fig. 2 is a schematic cross-sectional view of the socket housing of Fig. 1(b) taken along line AA according to an embodiment.

[0029] According to the general technical concept of the present disclosure, in its embodiment, as shown for example in Figures 1 and 2, a socket housing 1 suitable for the field of charging electric vehicles is provided, for example the socket housing 1 is used to be coupled to a sheet metal part 4 of a vehicle body. By way of example, said socket housing 1 comprises a base part 10 and a first wall part 11 in the form of a hollow cylindrical wall projecting continuously from a first side of the base part 10, the first wall part 11 comprising a first drainage part 12 intersecting the base part and opening outwards. The base part 10 is therefore mounted and coupled to the vehicle body, for example at a second side opposite to the first side of the base part, i.e. the second side of the base part 10 is considered as the mounting side that is attached to the vehicle body. In other words, for example, the second side surface of the base part 10 is a reference surface of the mounting side that is attached and attached to the vehicle body (e.g., its sheet metal part), and therefore, in the assembly of both the socket housing 1 and the sheet metal part, the relative positioning dimensions and angles between the socket housing 1 and the sheet metal part are determined based on the second side surface of the base part 10. More specifically, for example, the base part 10 is in the form of a flat plate shape, and the second side surface of the base part 10 is a flat surface, for example, closely abutting against the sheet metal part of the vehicle body and assembled together with the sheet metal part. If necessary, the second side of the base part 10 is a side that is expected to be separated from or sealed against the external environment, for example, moisture in the environment, i.e., a dry side. More specifically, by way of example, the first drainage 12 is in particular implemented as a passage extending obliquely from the inner root of the first wall 11 to the outer root of the first wall 11, i.e. extending completely through the first wall 11. The first drainage 12 is preferably in the form of a passage extending obliquely from the inner root of the first wall 11 to the outer root of the first wall 11 completely through the first wall 11 in a vertical plane in which the axis of the first wall 11 is located. Thus, for example, at the lowest point of the first wall, it facilitates the implementation of a through passage extending obliquely downwards from the inner root of the first wall to the outer root, whereby the first drainage 12 can penetrate the first wall 11 itself continuously vertically and obliquely downwards. Thus, the first drainage portion 12 of the first wall portion 11 intersects with the bottom of the base portion 10 and opens outward, i.e., essentially, the first drainage portion 12 does not extend to the free end of the first wall portion 11, but only extends obliquely downward through the bottom of the side wall of the first wall portion 11 (in other words, the axial extension range of the first drainage portion 12 in the axial direction of the first wall portion 11 does not extend to or beyond the free end of the first wall portion 11). The first drainage portion 12 is configured to drain water contained within the first wall portion 11 (e.g., water accumulated in the space surrounded and circumscribed by both the first wall portion 11 and the base portion 10) to the outside of the socket housing 1. Here, the expression "intersects with the bottom of the base portion 10" indicates that the first drainage portion 12 is positioned to intersect with the bottom of the base portion 10. Moreover, considering that the first wall 11 in the form of a hollow cylindrical wall protrudes from a first side of the base part, at the lowermost part of the base part 10, the base part 10 and the first wall 11 together define the lowest position of the socket housing 1 where accumulated water is most easily collected, and the first wall 11 communicates with the base part 10 at this lowest position. By way of example, the first drain part 11 is formed in the form of a through passage communicating between the inside and the outside of the socket housing 1, and includes a straight, arcuate or curved shape.

[0030] Such a configuration makes it possible to move / relocate the drainage structure, which is usually provided in the dry area where the sheet metal parts 4 are placed, outside the dry area without additional mounting fixtures or additional structures (e.g. corrugated pipe connections) facilitating drainage, thereby reducing the assembly difficulty, reducing the number of components and parts, reducing manufacturing costs without having to consider the spatial impact of the drainage structure on the dry area, and also completely eliminating the adverse effects of residual moisture remaining in the socket 2 in the dry area behind the socket housing 1 where the sheet metal parts 4 are placed.

[0031] Further, in accordance with an exemplary embodiment of the present disclosure, for example, socket housing 1 further comprises a plurality of spaced apart second walls 13 surrounded by first wall 11, each second wall 13 being in the form of a hollow cylindrical wall projecting continuously from the first side of base 10 and configured to receive a respective one of the plurality of terminals. In other words, each second wall 13 defines a mounting hole for mounting a respective one of the plurality of terminals.

[0032] In a further embodiment, each second wall portion 13 has a respective second drainage portion 14 at its intersection with the base portion 10, each second drainage portion 14 being in the form of a passage extending from the inside to the outside of each second wall portion 13, and each second drainage portion extending continuously along the axial direction of each second wall portion to the free end of each second wall portion 13.

[0033] Compared with the prior art, in the socket housing 1 of the present utility model, by providing each second drainage portion 14 on each of the multiple second wall portions 13 functioning as hole walls, so that each second drainage portion 14 functions as an additional drainage structure for each terminal mounting position, the accumulated water formed in such mounting hole of the terminal in the state of water droplets caused by plugging in the mating terminal or the like can be discharged, and then the discharged water can be further guided toward the first drainage portion 12, thereby providing a two-stage drainage path through such an ingenious structural design and improving safety performance. It is preferable that each mounting hole of each terminal is provided vertically at the lower end of each second wall portion 13, and then the accumulated water can be automatically discharged into the space surrounded by the first wall portion 11 and the base portion 10 by its own weight, and then can be guided toward the first drainage portion 12 for further discharge, thereby improving the drainage efficiency.

[0034] FIG. 3 is a partial enlarged view of area O of the cross-sectional view of FIG. 2 according to an embodiment.

[0035] In a further embodiment, for example as shown in FIG. 3 , the first drainage portion 12 extends continuously from an inlet portion 121 of the first wall portion 11, which is located at an inner root portion intersecting with the base portion 10, to an outlet portion 122 of the first wall portion 11, which is located at an outer root portion intersecting with the base portion 10, and the first drainage portion 12 includes a plurality of channel portions connected to each other, and the angle of each channel portion with respect to the axial direction of the first wall portion 11 gradually increases from the inlet portion 121 to the outlet portion 122.

[0036] In order to avoid difficulties in draining accumulated water in the space jointly defined by both the first wall portion 11 and the base portion 10 (such a space is considered to be a holding chamber for accumulated water), particularly at the lower end of the space, the first drain portion 12 is usually configured to intersect or connect to the base portion 10 of the socket housing 1, for example. Specifically, as an example, the first drain portion 12 extends continuously from an inlet portion 121 provided at an inner root portion of the first wall portion 11 intersecting with the base 10 to an outlet portion 122 provided at an outer root portion of the first wall portion 11 intersecting with the base 10.

[0037] Furthermore, in the passage structure of the first drainage section 12, such a setting in which the angle of each channel section relative to the first wall section 11 gradually increases allows water accumulated in the space surrounded by the first wall section 11 and the base section 10 (particularly the inlet section 121 at the inner root section of the first wall section 11 that intersects with the base section 10) to be naturally accelerated by gravity and drained out.

[0038] In an exemplary embodiment according to the present disclosure, the cross-sectional dimensions of the first drainage portion 12 can be determined, for example, based on both the radial and circumferential dimensions of the first wall portion 11. Specifically, as an example, the square of the width of the illustrated first drainage portion 12 positively correlates to the flow rate of the drainage, and the radial and circumferential dimensions of the first wall portion 11 relate to the amount of drainage and the flow rate of the drainage, as appropriate.

[0039] In an exemplary embodiment according to the present disclosure, for example, the inlet portion 121 includes a groove that extends along the axial direction of the first wall portion 11 and has a cross section that gradually increases from the inside to the outside of the first wall portion 11. Such an arrangement increases the water-passing area of ​​the inlet portion 121, improving the drainage efficiency.

[0040] As a specific example, the inlet portion 121 usually has a longitudinal cross section, for example, a trapezoid. According to geometric knowledge, when pre-determining the height of the drainage passage, by selecting the longitudinal cross section as a trapezoid shape, the cross-sectional area can be made larger, that is, the water-passing area can be optimally enlarged, and the drainage efficiency can be further improved. Therefore, it is preferable that the inlet portion 121 of the drainage passage in this utility model adopts a trapezoid longitudinal cross section, so that the cross-sectional area of ​​the drainage passage (i.e., the drainage trough) extending along the axial direction of the first wall portion 11 increases from the inside to the outside.

[0041] Furthermore, by setting the drainage passage of the inlet portion 121 to be, for example, concave from top to bottom, the problem of relatively large plugging and unplugging forces previously arising from the difficulty of degassing / discharging the terminal portion during plugging of the socket 2 and the charging gun can be solved, and the plugging and unplugging forces can be effectively reduced; at the same time, water droplets condensed in the terminal barrel or entering the terminal hole due to water droplets carried along with the body of the charging gun can be timely discharged through the drainage hole, preventing water accumulation.

[0042] In an exemplary embodiment according to the present disclosure, a guide ramp 15 is provided, for example, at the bottom of the socket housing 1, close to the inlet 121 of the first drainage portion 12, with a high end of the guide ramp 15 distal to the inlet 121 and a low end of the guide ramp 15 proximal to the inlet 121. By way of example, a demolding / mold lifting process creates a height difference between the high end and the low end, which subsequently allows moisture in the space enclosed by the first wall portion 11 to be evacuated.

[0043] 1 to 3, in the illustrated embodiment, the outlet portion 122 is provided, for example, in the shape of an inverted funnel with a cross section expanding outward. Therefore, according to Bernoulli's principle, such a setting makes it easier to disperse the discharged water at a somewhat gentler flow rate through the inlet portion 122 with a gradually increasing cross section, thereby preventing the discharged water from splashing at the outlet.

[0044] 1 to 3, in the illustrated embodiment, for example, before the outlet portion 122, the cross-sectional area of ​​the first drainage portion 12 gradually decreases from the inlet portion 121 toward the outlet portion 122. According to Bernoulli's principle, such a setting can help accelerate the flow velocity in the channel to promote drainage.

[0045] Additionally, in the illustrated embodiment, for example, the first drainage portion has an outwardly extending bent portion 16 in front of the outlet portion 122, for example the outlet portion 122 is angled approximately perpendicular to the first wall portion 11, and the drainage passage is in the form of a bent shape before reaching the outlet portion 122, thereby preventing muddy water from splashing from the outside into the interior of the socket housing 1 of the charging socket.

[0046] Specifically, compared to the prior art, such a bend allows muddy water to essentially splash into the "downspout" and blocks / blocks the muddy water at the bend, preventing it from continuing inwardly into socket 2, thus achieving an anti-splash effect.

[0047] Further, in an exemplary embodiment according to the present disclosure, rounded corners 17, for example, are formed on the edges of both the inlet section 121 and the outlet section 122 to act as guide corners, thereby avoiding abrupt / jumpy changes in flow conditions at sharp corners.

[0048] Further, in an exemplary embodiment according to the present disclosure, for example, the outlet portion 122 further comprises a protective portion, e.g., a protective cap, that at least partially surrounds the outlet portion 122 to prevent foreign objects from entering or blocking the outlet portion 122.

[0049] 1-3, in the illustrated embodiment, to reduce manufacturing costs, for example, the base 10 and the first wall 11 are one-piece molded plastic parts, and the first drainage features 12 are formed, for example, by molding or drilling holes in the plastic. Similarly, for example, the plurality of second drainage features 14 are formed by direct molding.

[0050] In order to improve the sealing and waterproofing performance of the socket housing 1, for example, the socket housing 1 further comprises a sealing part, for example provided to surround the first wall 11 and / or each second wall 13. By way of example, the sealing part comprises a sealing ring, for example in the form of a closed loop shape, extending in the circumferential direction of the socket housing 1. The sealing part is, for example, a rubber ring. The particular shape of the sealing part is simply required to provide a corresponding seal.

[0051] Based on the socket housing 1 configured as above, the first drainage section 12 provided at the root section of the first wall section 11 intersecting with the base section 10 can achieve the following excellent technical effects compared to the prior art (e.g., drainage from the dry area using an external accessory). That is, the drainage structure normally provided in the dry area where the sheet metal parts 4 are arranged, as adopted in the prior art, can be moved / relocated to the outside of the dry area, and the water accumulated in the socket housing 1 can be smoothly drained and discharged outside the housing by the gravity of the water itself without any additional mounting fixtures or additional structures (e.g., corrugated pipe connections) to facilitate drainage, thereby reducing the difficulty of assembly, reducing the number of components and parts, reducing manufacturing costs, and avoiding the accumulated water flowing through or even flowing into the mounting socket of the terminal, thereby avoiding the adverse effects on the terminal. Furthermore, the specific settings regarding the shape, dimensions, and internal structure of the first drainage section effectively optimize drainage and also avoid the adverse effects of foreign objects entering the outlet section 122.

[0052] FIG. 4 is a schematic diagram of a socket according to an embodiment, where FIG. 4(a) is a schematic right side view and FIG. 4(b) is a perspective view.

[0053] According to another aspect of the present disclosure of the present utility model, there is also provided a socket 2 for coupling to a sheet metal part 4 of a vehicle body, as shown in Fig. 4. The socket 2 is the socket housing 1 described in the above embodiment coupled to the sheet metal part 4 of the vehicle body, and includes the socket housing 1 in which a second side opposite to the first side of the base portion 10 is disposed toward the sheet metal part 4 and is cooperatively coupled to the sheet metal part 4, and a plurality of connection terminals 3 accommodated in holes defined by a plurality of second wall portions 13 in one-to-one correspondence.

[0054] As shown in FIG. 4, in the illustrated embodiment, therefore, to reduce manufacturing costs, each terminal is formed from a single sheet blank via a one-piece stamping process.

[0055] In order to improve the robustness, stability and retention of the connection terminals, the socket 2 includes holes defined by a plurality of second walls 13, which serve as mounting holes for the connection terminals. By way of example, the mounting holes are provided in the axial direction of the socket housing 1.

[0056] The socket housing 1 is preferably a housing of a charging socket of an electric vehicle. The socket 2 is thus a charging socket of an electric vehicle. Correspondingly, the plug is, for example, a charging gun which fits into the charging socket of the electric vehicle. Correspondingly, by way of example, the connection terminal 3 is a female terminal. A mating terminal provided on the charging gun and plugged into the connection terminal is a male terminal, and the connection terminal 3 can form a mating connection with a mating terminal provided on the charging gun and plugged into the charging gun.

[0057] The multiple connection terminals 3 are used to electrically connect to mating terminals of the battery pack of the automobile and the charging gun. The number and specifications of the connection terminals 3 are selected as required. Specifically, for example, the multiple second wall portions 13 and the corresponding terminals are arranged to be adapted one-to-one. The connection terminals 3 are accommodated in corresponding mounting holes defined by the corresponding second wall portions 13.

[0058] The multiple connection terminals 3 are used to electrically connect to mating terminals of a battery pack and a charging gun of an automobile, for example, an electric automobile. Specifically, for example, the multiple second wall portions 13 and the corresponding terminals are arranged in one-to-one correspondence. The number and specifications of the connection terminals 3 should be selected as needed. Specifically, for example, the multiple second wall portions 13 and the corresponding terminals are arranged in one-to-one correspondence. The connection terminals 3 are accommodated in corresponding mounting holes defined by the respective second wall portions 13. In the embodiment, the multiple connection terminals 3 are used to make the following electrical connections: That is, the positive pole DC+ of the DC power source is electrically connected to each of the paired terminals, the negative pole DC- of the DC power source is electrically connected to each of the paired terminals, the protective earth terminal PE, i.e., GND, is electrically connected to each of the paired terminals, the charging communication positive pole S+ is electrically connected to each of the paired terminals, the charging communication negative pole S- is electrically connected to each of the paired terminals, the first charging connection confirmation terminal CC1 is electrically connected to each of the paired terminals, the second charging connection confirmation terminal CC2 is electrically connected to each of the paired terminals, the positive pole A+ of the auxiliary power source is electrically connected to each of the paired terminals, and the negative pole A- of the auxiliary power source is electrically connected to each of the paired terminals. That is, the above nine connection terminals 3 can meet the requirements on electrical connection of the relevant Chinese national standard of the DC charging interface of the connection device for power transmission charging of the electric vehicle. In this specification, the specific device structure, circuit connection and operation principle will not be described repeatedly.

[0059] As an example, it is preferred that the base portion 10 is at a predetermined first angle a1 relative to the sheet metal part 4, and the first drainage portion 12 is inclined at an acute angle within an angular range greater than the first angle a1 relative to the axial direction of the first wall portion 11.

[0060] As an example, the first angle a1 is a preset angle according to the specific mounting position of the illustrated socket housing 1, and is usually an acute angle, more preferably, for example, inclined 15 degrees relative to the vertical direction (i.e., the direction of the plumb line), and the socket housing 1 is mounted slightly upward relative to the sheet metal parts of the vehicle body, thus matching the mounting situation of the socket 2 in the specific application of the vehicle body design, and making it easy to smoothly insert the plug, i.e., the charging gun, into the socket, place it in place for charging, and then pull it out of the socket 2 for removal, which is in accordance with ergonomic requirements.

[0061] For example, more preferably, the angle at which the first drainage portion 12 is inclined with respect to the axial direction of the first wall portion 11 (referred to as the second angle a2) should not be too small. This is because if the second angle a2 is smaller than the first angle a1, water cannot be smoothly drained, and accumulated water may remain in the space surrounded by the first wall portion 11 and the base portion 10 together. Furthermore, the second angle a2 should not be too large. If the second angle a2 is too large, the difficulty of processing may increase, considering that the first wall portion 11 is formed by an opening hole of the socket housing 1 integrally molded from plastic, or processing may become impossible, further considering the associated complex internal design of the first drainage portion 12. Therefore, when considered overall, for example, any angle selected from all angles within the second angle range can serve as the second angle a2, for example, an acute angle slightly larger than the first angle a1, for example, an acute angle not exceeding twice the first angle a1. Typically, for example, with the first angle a1 being inclined 15 degrees with respect to the vertical or plumb line direction, the maximum angle value of the second angle range may be, for example, 30 degrees.

[0062] Therefore, by setting the first angle a1 and the second angle range in this manner, a compromise can be simultaneously achieved between convenient processing of the first drainage portion 12, the ergonomics of the mounting environment of the socket 2, the insertion and withdrawal operations, and the smoothness of drainage.

[0063] Furthermore, in additional exemplary embodiments according to the present disclosure, the dimensions of the cross section of the first drainage section 12 may depend on, for example, the first angle a1 and the second angle range. Regarding the structure of the first drainage section, especially the overall inclination of the inlet section 121 may affect the flow rate and is therefore a factor to be considered in the design of the cross section.

[0064] Therefore, according to the radial and circumferential dimensions of the first wall portion 11, and also taking into account the first angle a1 and the second angular range, the particular shape of the cross-section of the first drainage portion and its dimensions are simply necessary to ensure that there is a passage through which the accumulated water surrounded by the first wall portion 11 and the base portion 10 can flow out and be discharged by the action of gravity.

[0065] Therefore, based on the above settings, and based on the angle settings of the first angle a1 and the second angle range, a compromise between convenient processing of the first drainage portion 12, the ergonomics of the installation environment of the first drainage portion 12, the insertion and withdrawal operations, and the smoothness of drainage can be simultaneously achieved.

[0066] By way of example, in order to enhance protection of the mounting holes and the connection terminals 3 accommodated in the respective mounting holes, the socket housing 1 also has stoppers. Specifically, each second wall portion 13 has a stopper protruding radially inward at a free end, the stopper being configured to prevent the respective terminal from leaving the hole defined by the second wall portion 13. Specifically, by way of example, each stopper has a continuous inner circumferential surface, and each stopper extends in a closed loop shape along the circumferential direction of the respective second wall portion 13.

[0067] Furthermore, in the illustrated embodiment, the socket 2 further includes, for example, an elastic seal sleeve fitted to the rear end of the terminal, which is pressed between the outer wall of the terminal and the inner wall of the mounting hole into which the terminal is inserted to seal the mating interface therebetween, thereby further preventing water from entering the assembly of sheet metal parts at the rear of the socket 2.

[0068] Furthermore, as shown in FIG. 4, in the illustrated embodiment, the base portion 10 is coupled on the second side to the sheet metal part 4 by at least one of a snap-fit ​​and a screw connection.

[0069] Additionally, as another exemplary embodiment, for example, the socket 2 may optionally further comprise an external drain pipe that communicates with the outlet portion 122 of the first drain portion 12 and is coupled, for example, to an electric pump, to further facilitate rapid drainage.

[0070] Furthermore, considering that the socket 2 provided by another aspect of the present disclosure comprises the above-mentioned socket housing 1, the socket 2 therefore also has the advantages of the above-mentioned socket housing 1, which will not be repeated in this specification.

[0071] The socket housing 1 and socket 2 of the above embodiments of the present invention can be used to charge electric vehicles or other electric devices. The above description is illustrative and not restrictive. The present invention has been described in consideration of the accompanying drawings, but the embodiments shown in the accompanying drawings represent preferred embodiments of the present invention and cannot be understood as limitations of the present invention. Therefore, those skilled in the art will understand that modifications can be made without departing from the principles and spirit of the general concept of the present disclosure of the present invention, and that the structures described in the various embodiments can be freely combined without any structural or theoretical contradiction.

[0072] The breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be limited only in accordance with the following claims and their equivalents.

[0073] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. In addition, reference numbers of elements in the claims shall not be construed as limiting the scope of the present invention.

Claims

1. A socket housing (1), The socket housing (1) comprises: a base part (10), - a first wall (11) in the form of a hollow cylindrical wall projecting continuously from a first side of said base part (10); Equipped with The first wall portion (11) has a first drainage portion (12) that intersects with the base portion and opens outwardly, the first drainage portion (12) is in the form of a passageway extending obliquely from an inner root of the first wall portion (11) to an outer root of the first wall portion (11); Socket housing (1).

2. The socket housing (1) further comprises a plurality of second walls (13) spaced apart from one another and surrounded by the first wall (11); each second wall portion is in the form of a hollow cylindrical wall projecting continuously from said first side of said base portion (10); Socket housing (1) according to claim 1.

3. Each second wall portion (13) is provided with a respective second drainage portion (14) at its intersection with said base portion (10); Each second drain (14) is in the form of a passageway extending from the inside to the outside of a respective second wall (13); Each second drainage portion (14) extends continuously along the axial direction of the respective second wall portion (13) to a free end of the respective second wall portion (13). Socket housing (1) according to claim 2.

4. the first drainage portion (12) extends continuously from an inlet portion (121) of the first wall portion (11) arranged at the inner root portion intersecting with the base portion (10) to an outlet portion (122) of the first wall portion (11) arranged at the outer root portion intersecting with the base portion (10); The first drainage portion (12) includes a plurality of channel portions connected to each other, and an angle of each channel portion with respect to an axial direction of the first wall portion (11) gradually increases from the inlet portion (121) to the outlet portion (122). Socket housing (1) according to claim 2.

5. The inlet portion (121) is provided with a groove; The groove extends along the axial direction of the first wall portion (11) and has a cross section that gradually increases from the inside to the outside of the first wall portion (11). Socket housing (1) according to claim 4.

6. The groove has a guide inclined surface (15) at its bottom, The high end of the guide ramp (15) is provided distal to the inlet (121), The lower end of the guide slope (15) is provided proximal to the inlet portion (121). Socket housing (1) according to claim 4.

7. The outlet portion (122) is provided in an inverted funnel shape with a cross section expanding outward. Socket housing (1) according to claim 4.

8. In front of the outlet portion (122), the cross-sectional area of ​​the first drainage portion (12) gradually decreases from the inlet portion (121) to the outlet portion (122). Socket housing (1) according to claim 7.

9. the first drain comprises an outwardly extending bend (16) in front of the outlet (122); Socket housing (1) according to claim 4.

10. Rounded corners (17) are formed on the edges of both the inlet (121) and outlet (122) sections. Socket housing (1) according to claim 4.

11. The outlet portion (122) is provided with a guard portion at least partially surrounding the outlet portion (122). Socket housing (1) according to claim 4.

12. the base (10) and the first wall (11) are one-piece molded plastic parts; Socket housing (1) according to claim 4.

13. A socket (2) for coupling to a sheet metal part (4) of a vehicle body, comprising: The socket (2) is - the socket housing (1) according to any one of claims 1 to 12, which is connected to the sheet metal part (4) of the vehicle body, wherein a second side of the base part (10) opposite to the first side is arranged towards the sheet metal part (4) and is cooperatively connected to the sheet metal part (4); a plurality of connection terminals (3) accommodated in holes defined by the plurality of second walls (13) in a one-to-one correspondence; A socket (2).

14. said base portion (10) being at a first predetermined angle (a1) relative to said sheet metal part (4); The first drainage portion (12) is inclined at an acute angle within an angle range greater than the first angle (a1) with respect to the axial direction of the first wall portion (11). Socket (2) according to claim 13.

15. Each second wall portion (13) is provided with a stopper projecting radially inwardly at a free end thereof, The stoppers are configured to prevent each terminal from leaving an aperture defined by the second wall (13). Socket (2) according to claim 13.

16. Each stopper has a continuous inner circumferential surface; Each stopper extends in a closed loop shape along the circumferential direction of the respective second wall portion (13). Socket (2) according to claim 13.

17. the base part (10) is connected to the sheet metal part (4) on the second side by at least one of a snap-fit ​​and a screw connection. Socket (2) according to claim 13.

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