Charging socket

Abstract

The utility model relates to the technical field of conductive connection, in particular to a charging socket. According to the novel charging socket provided by the utility model, the detection assembly outer baffle plate installed at the detection assembly avoiding hole of the charging socket is provided with the retaining elastic sheet extending from the rear end of the detection assembly outer baffle plate in the sliding installation direction; the cavity wall of the terminal installation cavity is provided with a retaining clamping groove which is matched with the retaining elastic piece to prevent the detection assembly outer baffle from sliding backwards and separating, so that whether the retaining elastic piece and the retaining clamping groove are matched in place or not can be visually observed, and reliable installation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive connection, in particular to a charging socket. Background Art

[0002] The charging sockets used in new energy vehicles often need to be temperature detected to ensure charging safety. Therefore, a temperature sensor is generally arranged in the charging socket to detect the socket temperature, especially the temperature of the power terminals. The Chinese invention patent application with the publication number of CN112436327A discloses a novel charging connector, which includes a socket housing. The socket housing includes a cylindrical housing and a connection flange arranged on the outer side of the cylindrical housing. An inner insulator is arranged in the cylindrical housing. A terminal installation cavity is arranged on the inner insulator. After the terminals are loaded into the installation cavity, the terminals are fixedly installed in the cylindrical housing by a pressing plate loaded into the cylindrical housing from the back to the front. A tail cover is also buckled at the rear end of the cylindrical housing. A wire passing channel for the wire connected to the rear end of the terminal to pass through is arranged on the tail cover. A wire sealing body is arranged in the tail cover. The tail cover is buckled on the cylindrical housing to seal the wire connected to the rear end of the terminal.

[0003] In order to detect the temperature of the terminals, detection holes extending radially are formed in the terminals. An avoidance channel corresponding to the detection holes is formed in the cylindrical housing. The temperature sensor element of the temperature monitoring device radially extends into the detection holes through the avoidance channel. The signal wire of the temperature detection device is led out backward. A sealing member is sleeved on the temperature sensor element to seal the temperature sensor element in the avoidance channel. The buckling part of the tail cover buckled to the cylindrical housing is arranged corresponding to the avoidance channel, and a guiding groove extending in the front-back direction is arranged on the buckling part. A clamping groove is arranged on the cylindrical housing. A plate-shaped monitoring device fixing member slides into the guiding groove from the back to the front and covers the temperature detection device inside. A clamping barb is arranged on the inner side of the plate-shaped monitoring device fixing member. The cooperation between the clamping barb and the clamping groove can realize the anti-disengagement fixation of the monitoring device fixing member on the buckling part.

[0004] In the above charging connector, the monitoring device fixing member is clamped and cooperated with the clamping groove on the cylindrical housing through the clamping barb on its inner side. When the monitoring device fixing member is slid and installed from the back to the front, it slides past the outside of the signal wire, which cannot ensure the reliable clamping of the clamping barb and the clamping groove, and is likely to misjudge the installation reliability and fall off in the later stage. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a charging socket to solve the problem that it is inconvenient to judge whether the monitoring device fixing member for blocking and restricting the temperature monitoring device installed on the existing charging socket is reliably installed, and it is likely to fall off in the later stage because it is not assembled in place.

[0006] The charging socket of the present utility model includes a socket housing. A socket insulator is provided inside the socket housing. A terminal installation cavity for front - rear insertion of terminals is provided on the socket insulator. A detection component avoidance hole for the radial penetration of a temperature detection component and extension into a terminal detection hole is provided on the cavity wall of the terminal installation cavity. An outer baffle of the detection component for blocking a sealing sleeve sleeved on the temperature detection component is slidably installed at the detection component avoidance hole on the outer wall of the terminal installation cavity. In the sliding installation direction, a retaining spring piece extends from the rear end of the outer baffle of the detection component. A retaining card slot for cooperating with the retaining spring piece to prevent the outer baffle of the detection component from sliding backward and disengaging is provided on the cavity wall of the terminal installation cavity.

[0007] Further, on the outer side of the cavity wall of the terminal installation cavity corresponding to the detection component avoidance hole, a sliding outer boss is provided. On both side edges in the width direction of the outer baffle of the detection component, sliding folding parts are respectively provided. On both side edges in the width direction of the sliding outer boss and one of the sliding folding parts, a sliding groove is provided, and on the other, a sliding rib is provided. The outer baffle of the detection component is slidably assembled with the sliding outer boss through the sliding folding parts.

[0008] Further, on the outer side of the cavity wall of the terminal installation cavity, behind the sliding outer boss, a stop rib extending perpendicular to the sliding direction is provided. There is a certain interval between the stop rib and the sliding outer boss, and the retaining card slot is formed therebetween. The retaining spring piece extends obliquely inward in the radial direction.

[0009] Further, one end of the sliding groove in the sliding direction has a positioning groove wall, and the positioning groove wall is in stop cooperation with the end of the sliding rib to determine the position where the outer baffle of the detection component is slid in place.

[0010] Further, the width of the retaining spring piece is smaller than the width of the outer baffle of the detection component.

[0011] Further, on the rear side of the stop rib, a sliding surface is provided to facilitate the sliding jump of the retaining spring piece during the sliding process.

[0012] Further, at the front end of the outer baffle of the detection component, an avoidance notch is provided to avoid the temperature detection component during the sliding installation process until it is slid in place for its lead wire to be led out from the outside.

[0013] Further, the outer baffle of the detection component is slidably installed on the outer cavity wall of the terminal installation cavity along the front - rear direction of the socket housing.

[0014] Further, the outer baffle of the detection component has a hole edge mating surface that fits with the outer hole edge of the detection component avoidance hole, and also has an outer concave part that is recessed outward to accommodate and wrap the sealing sleeve, thereby increasing the installation height reserved for the sealing sleeve.

[0015] Further, an insulator installation cavity is provided inside the socket housing. The socket insulator is inserted into the insulator installation cavity from front to back, and the detection component avoidance hole is exposed at the rear side of the insulator installation cavity for installation.

[0016] The present utility model provides a new charging socket. For the detection component outer baffle installed at the detection component avoidance hole of this charging socket, a retaining spring piece extends at the rear end of the detection component outer baffle in the sliding installation direction. A retaining groove that cooperates with the retaining spring piece to prevent the detection component outer baffle from sliding backward and disengaging is provided on the cavity wall of the terminal installation cavity. In this way, it can be directly observed whether the retaining spring piece and the retaining groove are properly engaged to ensure reliable installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a front side view of a specific embodiment of the charging socket of the present utility model;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the rear side view of the shown charging socket;

[0019] Figure 3 is Figure 1 a schematic structural diagram of the socket insulator of the DC charging module in ;

[0020] Figure 4 is Figure 3 a schematic structural diagram with the detection component outer baffle hidden in ;

[0021] Figure 5 is Figure 4 a schematic structural diagram with the temperature detection component hidden in ;

[0022] Figure 6 is a schematic structural diagram of the detection component outer baffle;

[0023] Figure 7 is a schematic structural diagram of another perspective of the detection component outer baffle;

[0024] Figure 8 is a sectional view showing the temperature detection component installed in the terminal installation cavity.

[0025] In the figures: 1. Socket housing; 10. Insulator installation cavity; 11. Socket insulator; 12. Fixed edge; 13. Sliding convex platform; 14. Sliding groove; 15. Retaining groove; 16. Stopping rib; 17. Detection component avoidance hole; 19. Connecting column; 2. Detection component outer baffle; 20. Lead wire; 21. Temperature probe; 22. Sliding folding part; 23. Retaining spring piece; 25. Sealing sleeve; 220. Sliding rib; 28. Avoidance notch; 29. Outer concave part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The features and performance of the present utility model will be further described in detail in conjunction with the embodiments below.

[0027] In view of the problem that the fixing plate for shielding the temperature detection component in the charging connector in the prior art is assembled by the snap-in barbs on the inner side cooperating with the cavity wall of the terminal installation cavity, and it is not easy to observe whether the assembly is in place. Through structural improvement, the elastic snap-in structure is exposed, so that the assembly situation can be visually observed, and reliable installation can be ensured.

[0028] For the convenience of accurate description below, the side of the charging socket facing the charging gun for the charging gun to insert is defined as the front side, and the side facing away from the charging gun is defined as the rear side.

[0029] Specifically, as Figures 1-8 shown, the charging socket of the present utility model includes a socket housing 1. The socket housing 1 includes a connection flange on the outer side, and is used for fixedly connecting with the vehicle body through the connection flange. The socket housing 1 further includes an insulator installation cavity 10 inside the connection flange. The insulator installation cavity 10 penetrates through from front to back, and has an inwardly retracted flanging at the rear end. An insulator 11 is arranged in the insulator installation cavity 10. The insulator 11 is inserted into the insulator installation cavity 10 from front to back. The periphery of the insulator 11 has a fixed stop edge 12. After the insulator 11 is inserted into the insulator installation cavity 10 from front to back, the fixed stop edge 12 abuts against the inwardly retracted flanging of the insulator installation cavity 10. A connection ear extending radially inward is provided at the rear end of the cavity wall of the insulator installation cavity 10. A connection post 19 is provided on the insulator 11 corresponding to the connection ear. A screw hole is provided on the connection post 19, and a screw through hole is provided on the connection ear. A connection screw passes through the connection ear and is screwed into the connection post 19 to realize the fixed installation of the insulator 11 in the insulator installation cavity 10. The insulator 11 is used to fix the socket terminals, including power terminals and signal terminals. The front cavity opening of the insulator installation cavity 10 forms an insertion interface for the charging gun to insert and achieve insertion.

[0030] It can be seen from Figures 1-2 that the charging socket in this embodiment includes two charging gun insertion interfaces, and two insulators 11 are installed. Among them, the two insertion interfaces respectively correspond to a DC charging socket and an AC charging socket, that is, the charging socket is a dual-mode charging socket that can charge both DC and AC. Of course, the present utility model is not limited to such a charging socket, and it can also be a single-mode charging socket that can only charge DC or only charge AC.

[0031] In this embodiment, the socket insulator 11 is provided with a terminal installation cavity extending forward and backward, and the terminal installation cavity is formed by a mounting tube extending forward and backward formed on the socket insulator 11, and the inner cavity of the mounting tube is used for the terminal to be loaded forward and backward. A temperature detection component is installed at the position of the terminal installation cavity extending out of the insulator installation cavity 10. Specifically, a radially extending blind hole is provided on the power terminal fixedly installed in the terminal installation cavity, which is a terminal detection hole. A detection component avoidance hole 17 is provided on the cavity wall of the terminal installation cavity at a position corresponding to the terminal detection hole, and the temperature detection component can radially pass through the detection component avoidance hole 17 and extend into the terminal detection hole. The temperature detection component is the same as the existing temperature detection component, including a rod-shaped temperature probe 21 and a lead 20 connected to the rear end of the temperature probe 21. The inner end of the temperature probe 21 extends into the terminal detection hole, and the rear end exposes the detection component avoidance hole 17. A sealing sleeve 25 is mounted on the temperature probe 21, and the sealing sleeve 25 hugs the temperature probe 21 and seals with the hole wall of the detection component avoidance hole 17.

[0032] On the outer wall of the terminal installation cavity, a detection component outer baffle plate 2 for shielding the sealing sleeve 25 is slidably installed at the detection component avoidance hole 17. By shielding the sealing sleeve 25, the temperature detection component is prevented from escaping from the detection component avoidance hole 17. The detection component outer baffle plate 2 is slidably installed on the outer wall of the terminal installation cavity along the front-to-back direction, and a avoidance notch 28 is provided at the front end. The avoidance notch 28 is used to avoid the temperature detection component during the process of sliding the detection component outer baffle plate 2 from the back to the front and after the sliding installation is in place, so that the lead 20 of the temperature detection component can be led out from the outside of the detection component outer baffle plate 2 to the rear. A stop spring piece 23 is extended backward from the rear end of the outer baffle plate 2 of the detection component, and a stop groove 15 is provided on the cavity wall of the terminal installation cavity at the rear side of the detection component avoidance hole 17. After the outer baffle plate 2 of the detection component is installed in place from back to front, the stop spring piece 23 is just inserted into the stop groove 15, and the stop groove 15 stops the stop spring piece 23 backward, thereby ensuring the installation reliability of the outer baffle plate 2 of the detection component.

[0033] This installation structure exposes the cooperation between the anti-retraction spring piece 23 and the anti-retraction slot 15, which can facilitate the operator to visually observe whether the two are reliably engaged, thereby ensuring the reliability of the engagement. Moreover, when removing the outer baffle 2 of the detection component, this structure can directly release the engagement with the anti-retraction slot 15 by buckling the anti-retraction spring piece 23 from the outside, and the disassembly is also relatively convenient.

[0034] like Figures 3-8As shown, on the outer side of the cavity wall of the terminal installation cavity, a sliding outer boss 13 is provided at a position corresponding to the detection component avoidance hole 17. On both side edges in the width direction of the outer baffle 2 of the detection component, sliding folding parts 22 are respectively provided. The sliding folding parts 22 on both side edges are folded towards the same side of the outer baffle 2 of the detection component, and are folded towards each other at the ends. The two folded edges folded towards each other form a sliding rib 220. On both side edges in the width direction of the sliding outer boss 13, sliding grooves 14 extending forward and backward are provided. The outer baffle 2 of the detection component slides forward by engaging the sliding rib 220 into the sliding groove 14. After the sliding is in place, the anti-retreat elastic piece 23 is snapped into the anti-retreat card slot. In order to reliably achieve the forward stop of the outer baffle 2 of the detection component, the front end of the sliding groove 14 has a positioning groove wall. Through the stop cooperation between the positioning groove wall and the front end of the sliding rib 220, the position where the outer baffle 2 of the detection component slides in place can be restricted and determined. In one implementation, it can be made such that when the front end of the sliding rib 220 just contacts the positioning groove wall, the anti-retreat elastic piece 23 just snaps into the anti-retreat card slot. In other implementations, the installation positions of the sliding groove 14 and the sliding rib 220 can be interchanged between the outer baffle 2 of the detection component and the sliding outer boss 13.

[0035] As Figures 3-5 shown, on the rear side of the sliding outer boss 13 on the outer side of the cavity wall of the terminal installation cavity, a stop rib 16 extending perpendicular to the sliding direction is provided. There is a certain interval between the stop rib 16 and the sliding outer boss 13, and the anti-retreat card slot 15 is formed between the two. The anti-retreat elastic piece 23 extends obliquely inward in the radial direction from back to front. During the process of the outer baffle 2 of the detection component being slidably installed from back to front, the outer baffle 2 of the detection component passes above the stop rib 16. The rear end of the anti-retreat elastic piece 23 moves forward close to the stop rib 16 and deforms outward after contacting the stop rib 16. When the rear end of the anti-retreat elastic piece 23 passes over the stop rib 16 from above, it is snapped into the anti-retreat card slot 15. In order to facilitate the anti-retreat elastic piece 23 to pass over the stop rib 16 from back to front, a sliding surface for the anti-retreat elastic piece 23 to slide over during the sliding process is provided on the rear side of the stop rib 16. The sliding surface is an inclined surface or an arc surface. It can also be clearly seen from the figure that the width of the anti-retreat elastic piece 23 is smaller than that of the outer baffle 2 of the detection component, and the width gradually decreases from front to back to ensure high elasticity.

[0036] From Figures 6-7It can be seen that the inner side surface of the outer baffle 2 of the detection component is in contact with the outer hole edge of the avoidance hole 17 of the detection component, which is the hole edge mating surface. The middle part of the outer baffle 2 of the detection component has a bulging part, that is, an outer concave part 29 formed by concave from the inside to the outside. The outer concave part 29 forms an inner cavity with an open front side. The avoidance notch 28 is arranged at the front end of the outer concave part 29, and the outer concave part 29 corresponds to the avoidance hole 17 of the detection component. Through the setting of the outer concave part 29, the height between the outer hole edge of the avoidance hole 17 of the detection component and the outer baffle 2 of the detection component is increased. In this way, a thicker sealing sleeve 25 can be used, so as to achieve a better sealing effect. As Figure 8 shown, an inner flange is provided at the inner end of the avoidance hole 17 of the detection component. After the sealing sleeve 25 is sleeved on the temperature probe 21 and the temperature probe 21 is inserted into the avoidance hole 17 of the detection component, the lower end of the sealing sleeve 25 abuts against the inner flange, and the upper end of the sealing sleeve 25 protrudes from the upper hole edge of the avoidance hole 17 of the detection component and is located in the inner cavity formed by the outer concave part 29.

[0037] In the above-mentioned embodiment, the socket insulator 11 is independent of the socket housing 1 and is inserted into the insulator installation cavity 10 from front to back and is fixedly connected by connecting screws. In other embodiments, the forming method of the socket insulator 11 disclosed in the utility model patent application document cited in the background art can also be adopted.

[0038] In the above-mentioned embodiment, the lead wire 20 of the temperature detection component is led out from the outside of the outer baffle 2 of the detection component. In other embodiments, a wire groove extending forward and backward like the detection component fixing part in the utility model patent application document cited in the background art is provided on the inner side surface of the outer baffle 2 of the detection component. The lead wire 20 passes through the wire groove and extends backward. At this time, two retaining elastic pieces 23 are provided and arranged side by side in the width direction of the outer baffle 2 of the detection component. The interval between the two retaining elastic pieces 23 corresponds to the wire groove and allows the lead wire 20 to pass through backward.

[0039] In the above-mentioned embodiment, both the sliding convex rib 220 and the sliding groove 14 extend in the front-back direction of the socket housing 1, and the outer baffle 2 of the detection component slides in the front-back direction of the socket housing 1. In other embodiments, the sliding groove 14 can be provided on the two side surfaces in the front-back direction of the sliding outer convex platform 13, and the outer baffle 2 of the detection component slides in the left-right direction. The stop convex strip 16 is provided on the circumferential side of the sliding outer convex platform 13.

[0040] In the above-mentioned embodiment, the retaining card slot 15 is formed by the sliding outer convex platform 13 and the stop convex strip 16 arranged at an interval from it. In other embodiments, a radially concave groove is provided on the outer cavity wall of the terminal installation cavity at the rear side of the sliding outer convex platform 13, so as to form the retaining card slot 15. At this time, the rear end of the retaining elastic piece 23 is inclined inward to a greater extent so as to be able to snap into the groove inward after sliding in place.

[0041] In the above-described embodiment, one end of the sliding groove 14 has a positioning groove wall to stop the end of the sliding rib 220. In other embodiments, the sliding groove 14 can be a through groove that penetrates from front to back, and the front side of the outer baffle 2 of the detection assembly is limited by the temperature detection assembly.

[0042] In the above-described embodiment, the outer baffle 2 of the detection assembly has a hole edge mating surface that fits with the outer hole edge of the avoidance hole 17 of the detection assembly, and also has an outer concave portion 29 that is recessed outward to accommodate and wrap the sealing sleeve 25. In other embodiments, the main board body of the outer baffle 2 of the detection assembly is a flat plate structure, and the outer recess is no longer provided. At this time, a sealing sleeve 25 with a relatively thin thickness is used.

[0043] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should, by the same token, be included in the protection scope of the present invention.

Claims

1. A charging socket, characterized in that: The invention comprises a socket housing (1), wherein a socket insulator (11) is arranged in the socket housing (1), a terminal installation cavity for front and rear terminal installation is arranged on the socket insulator (11), a detection component avoidance hole (17) for radially passing a temperature detection component and extending into the terminal detection hole is arranged on the cavity wall of the terminal installation cavity, a detection component outer baffle (2) for shielding a sealing sleeve (25) mounted on the temperature detection component is slidably mounted on the outer wall of the terminal installation cavity at the detection component avoidance hole (17), a stop spring (23) extending from the rear end of the detection component outer baffle (2) in the sliding installation direction, and a stop slot (15) cooperating with the stop spring (23) to prevent the detection component outer baffle (2) from sliding backward and disengaging is arranged on the cavity wall of the terminal installation cavity.

2. The charging socket according to claim 1, characterized in that: A sliding outer boss (13) is provided on the outer side of the cavity wall of the terminal installation cavity at a position corresponding to the detection component avoidance hole (17); sliding folding portions (22) are provided on both side edges in the width direction of the detection component outer baffle (2); sliding grooves (14) are provided on one of the both side edges in the width direction of the sliding outer boss (13) and the sliding folding portion (22); and sliding ribs (220) are provided on the other; the detection component outer baffle (2) is slidably assembled with the sliding outer boss (13) via the sliding folding portion (22).

3. The charging socket according to claim 2, characterized in that: A stop convex strip (16) extending perpendicular to the sliding direction is provided on the rear side of the sliding outer boss (13) on the outer side of the cavity wall of the terminal installation cavity. There is a certain interval between the stop convex strip (16) and the sliding outer boss (13), and the stop groove (15) is formed therebetween. The stop spring sheet (23) extends radially inwardly.

4. The charging socket according to claim 2, characterized in that the sliding One end of the mounting groove (14) in the sliding direction has a positioning groove wall, and the positioning groove wall cooperates with the end stop of the sliding convex rib (220) to determine the position of the detection component outer baffle (2) when it is slid into place.

5. The charging socket according to claim 3, characterized in that: The width of the stop spring (23) is smaller than the width of the outer baffle (2) of the detection component.

6. The charging socket according to claim 3, characterized in that: The rear side of the stop convex strip (16) is provided with a sliding surface that facilitates the stop spring sheet (23) to slide over during the sliding process.

7. The charging socket according to any one of claims 1 to 6, characterized in that: The front end of the detection component outer baffle (2) is provided with an escape notch (28) for evading the temperature detection component during the sliding installation process until the component is in place and allowing its lead wire (20) to be led out from the outside.

8. The charging socket according to any one of claims 1 to 6, characterized in that: The detection component outer baffle (2) is slidably mounted on the outer cavity wall of the terminal installation cavity along the front-rear direction of the socket housing (1).

9. The charging socket according to any one of claims 1 to 6, characterized in that: The detection component outer baffle (2) has a hole edge matching surface that fits with the outer hole edge of the detection component avoidance hole (17), and also has an outer recessed portion (29) that is recessed outwards to accommodate the sealing sleeve (25), thereby increasing the installation height reserved for the sealing sleeve (25).

10. The charging socket according to any one of claims 1 to 6, characterized in that: An insulator mounting cavity (10) is provided in the socket housing (1), the socket insulator (11) is installed in the insulator mounting cavity (10) from front to back, and the detection component avoidance hole (17) is exposed at the rear side of the insulator mounting cavity (10) for easy installation.

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