Panel socket and manual maintenance switch

Abstract

The utility model belongs to the technical field of electric connector, especially for panel socket, including shell, the plug -in terminal that supplies the access of plug -in piece and the line snout that supplies the access of wire, line snout and plug -in terminal electricity is connected, still including insulating protective housing, protective housing can be connected on shell and with plug -in terminal between to cover line snout and wire. The utility model is not on the basis of destroying the compact structure of existing MSD whole, through protective housing isolation line snout, wire, so that the operator carries out equipment overhaul operation, it is difficult to cause electric shock safety accident because of touching line snout, wire's wiring part, greatly promotes the operation safety of existing MSD.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically to panel sockets and manual inspection switches. Background Technology

[0002] A manual service disconnector (MSD) is a commonly used manual operating device in the high-voltage circuits of equipment such as electric vehicles and power distribution units (PDUs). When electric vehicles or power distribution units require maintenance, a manual service disconnector needs to be installed on the high-current main circuit line of the equipment to avoid the danger of electric shock due to improper operation and damage to electrical components caused by overload or short circuit.

[0003] There are many types of manual MSDs on the market. In order to solve the problem of excessive size, some manufacturers have designed more compact MSDs. For example, Chinese utility model patent with publication number CN207489689U discloses a manual mini MSD, which has a plug and a socket. The socket has a rectangular shell and a female terminal assembly on the base plate. The plug is inserted and removed from the female terminal by flipping it upside down. It is very compact in structure and occupies very little space.

[0004] For most MSDs, the wiring method is mainly achieved by connecting wire harnesses to both ends of the female terminal. Furthermore, for rapid assembly of the wire harness and terminal, existing methods exist where wire lugs are installed on the female terminal, the wire passes through the rotating clamping cover and the terminal housing, and is directly inserted into the wire lug. The wire is then fixed to the terminal housing by rotating the clamping cover. For example, Chinese Utility Model Patent Publication No. CN219627008U discloses an energy storage connector with a foolproof anti-rotation function.

[0005] However, considering that such a wire lug is designed directly in the MSD, when the male terminal is pulled out, the operator's fingers may touch the wire lug, which is easy to cause electric shock and is not safe enough.

[0006] Therefore, this application proposes a panel socket and a manual maintenance switch for enhanced safety in manual maintenance switches. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a panel socket and a manual inspection switch, which solves the problem of easy electric shock during MSD use.

[0008] On the one hand, in order to achieve the above objectives, the present invention provides the following technical solution: a panel socket, including a housing, a plug terminal for inserting a plug and a wire lug for inserting a wire, wherein the wire lug is electrically connected to the plug terminal, and further includes an insulating protective shell, wherein the protective shell is detachably connected to the housing and between the protective shell and the plug terminal to cover the wire lug and the wire.

[0009] Preferably, the outer shell has a rectangular box structure, and the end of the outer shell has an outward protrusion. The interior of the protrusion extends through the inside and outside of the outer shell to allow the wire to pass through. The axial side of the protrusion has an external thread, and it also includes a rotary clamping cover. After the rotary clamping cover is installed on the protrusion, it can restrict the axial and radial movement of the wire.

[0010] Preferably, the plug-in terminal includes a socket housing, a female terminal and a connecting plate. The socket housing is provided with two upright plates, and the two female terminals are respectively inserted into the two upright plates. The top of the upright plate is provided with an opening for the insert to pass through. The connecting plate is L-shaped, and the two ends of the connecting plate are respectively connected to the female terminal and the wire lug. The wire lug is threaded to the connecting plate.

[0011] Preferably, the protective shell includes a bottom shell and a cover shell, with a space between the bottom shell and the cover shell for accommodating wire lugs and / or wires to pass through. The bottom shell is detachably connected to the outer shell, and the cover shell is detachably connected to the bottom shell, with both ends of the cover shell abutting between the upright plate and the outer shell, respectively.

[0012] Preferably, one end of the bottom shell extends into the protrusion and engages with the inner wall of the protrusion, and the other end of the bottom shell is an open structure. The protrusion and the open structure are connected to allow for the passage of wires, and the cover is inserted into the bottom shell to cover the open portion of the bottom shell.

[0013] Preferably, the bottom of the outer shell is further provided with a limiting post, and the bottom shell is provided with a hole that cooperates with the limiting post.

[0014] Preferably, the bottom of the socket housing extends to the lower end of the connecting plate, and the upper surface of the extended portion of the socket housing is provided with a surrounding plate. The cover is engaged with the bottom shell and the surrounding plate by means of a snap fastener.

[0015] Preferably, the bottom of the socket housing is threadedly connected to the outer shell, and the bottom shell abuts against the included angle of the upper edge of the extension portion of the socket housing at one end near the plug terminal.

[0016] Preferably, the rotary clamping cap includes: A cover body, one end of the inner wall of which is threaded into the protrusion; A sleeve, located inside the cover body, has a plurality of radially contracting spring tabs on its inner wall; A damping pad, the damping pad being used to conform to the outer surface of the conductor; The end of the cover away from the protrusion has a hollow end plate, the inner diameter of which is smaller than the outer diameter of the sleeve.

[0017] On the other hand, in order to achieve the above objectives, the present invention also provides the following technical solution: a manual maintenance switch, including the panel socket as described above, and also including a plug, wherein the plug includes prongs for electrically connecting the plug terminals.

[0018] Compared with the prior art, the present invention provides a panel socket and a manual maintenance switch, which have the following advantages: This panel socket, without compromising the existing compact structure of the MSD, isolates the lugs and wires with a protective shell, making it much less likely for operators to touch the lugs or wire connections during equipment maintenance, thus significantly improving the operational safety of the existing MSD. Attached Figure Description

[0019] Figure 1 A three-dimensional assembly structure diagram of a manual maintenance switch; Figure 2 A three-dimensional structural diagram of the manual maintenance switch after the plug is unplugged; Figure 3 This is a schematic diagram of the assembly structure of the socket on this panel; Figure 4 This is a three-dimensional assembly structure diagram of the protective cover in this panel socket; Figure 5 This is an exploded view of the rotating clamping cover in the panel socket. Figure 6 This is an exploded view of the plug-in terminals in the socket of this panel.

[0020] In the diagram: A, wire; 1. Outer shell; 11. Protrusion; 12. Limiting post; 2. Plug-in terminal; 21. Socket housing; 211. Vertical plate; 2111. Opening; 212. Enclosure; 22. Female terminal; 23. Connecting plate; 3. Plug; 31. Connector; 32. Pressure plate; 4. Thread nose; 5. Protective shell; 51. Bottom shell; 511. Open structure; 512. Hole; 52. Cover; 521. Buckle; 6. Rotary clamping cover; 61. Cover body; 611. End plate; 62. Sleeve; 621. Spring piece; 63. Damping pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The following implementation is designed to address the problem that operators may easily touch the wire lug 4 and suffer electric shock when it is connected to the MSD (Manual Service Switch). The rotating clamping cover 6, wire lug 4, socket box, insert 31, housing 1, and female terminal 22 are all existing components in the field of electrical connectors.

[0023] The specific selection of socket box, plug 31, housing 1, and female terminal 22, as well as their connection relationship, position distribution, and materials, should be understood in accordance with the MSD standard. The wire lug 4 refers to a metal tubular structure with a wire A (at least with its end exposed) for access. The rotating clamping cover 6 should also be understood in accordance with the function in the prior art, which at least has the function of restricting the radial and axial displacement of the wire A after tightening.

[0024] Example 1: Please see Figure 1-3 The present invention provides the following technical solution: a panel socket, including a housing 1, a plug terminal 2 for inserting a plug 31 and a wire lug 4 for inserting a wire A. The wire lug 4 is electrically connected to the plug terminal 2. It also includes an insulating protective shell 5, which is detachably connected to the housing 1 and between the protective shell 5 and the plug terminal 2 to cover the wire lug 4 and the wire A. The outer casing 1 has a rectangular box structure. The end of the outer casing 1 is provided with an outward protrusion 11. The interior of the protrusion 11 extends through the inside and outside of the outer casing 1 to allow the wire A to pass through. The axial side of the protrusion 11 is provided with an external thread. It also includes a rotating clamping cover 6. After the rotating clamping cover 6 is installed on the protrusion 11, it can restrict the axial and radial movement of the wire A.

[0025] As an optional implementation of this utility model, during assembly, the plug-in terminal 2 is installed inside the housing 1. The wire A is passed through the rotating clamping cover 6, the protrusion 11, and the housing 1, and then connected to the wire lug 4. The rotating clamping cover 6 is tightened onto the protrusion 11. The protective shell 5 is then installed inside the housing 1 to cover the wire lug 4 and the wire A. In use, the circuit is closed by connecting the plug 31 on the connector to the two plug-in terminals 2. During maintenance, the connector is removed. Because the insulating protective shell 5 covers the wire lug 4 and the wire A, it isolates the wire lug 4 and the wire A from external contact, preventing accidental contact between the operator's hands and the wiring area of ​​the plug-in terminal 2, thus preventing electric shock accidents and significantly improving the safety performance of the current manual maintenance switch.

[0026] Furthermore, since the protective housing 5 is an improvement based on the existing MSD housing 1 and plug-in terminals 2, the protective housing 5 itself also meets the requirements of overall structural compactness. The difference between it and the existing MSD (such as a manual mini MSD in CN207489689U) is that, in addition to the protective housing 5, the wiring method has been changed from the bottom of the whole to the side of the housing 1. Although the length has increased, it is still a narrow wire type, which is convenient for wiring and installation operations in different situations.

[0027] By adopting this implementation method, without compromising the compact structure of the existing MSD, the protective shell 5 isolates the lug 4 and the conductor A, making it difficult for operators to cause electric shock accidents by touching the wiring parts of the lug 4 and the conductor A when performing equipment maintenance operations, thus greatly improving the operational safety of the existing MSD.

[0028] Furthermore, the plug-in terminal 2 includes a socket housing 21, a female terminal 22, and a connecting plate 23. The socket housing 21 has two upright plates 211, and the two female terminals 22 are respectively inserted into the two upright plates 211. The top of the upright plates 211 has an opening 2111 through which the insert 31 passes. The connecting plate 23 is L-shaped, and its two ends are respectively connected to the female terminal 22 and the wire lug 4. The bottom of the socket housing 21 extends to the lower end of the connecting plate 23, and the wire lug 4 is threaded onto the connecting plate 23. The connecting plate 23 is threaded onto the extended portion of the socket housing 21. During assembly, the wire lug 4 is directly installed on the connecting plate 23 by bolts for the connection of the wire A. The rotating clamping cap 6 includes: The cover 61 has an inner wall end that is threaded into the protrusion 11. Sleeve 62, located inside cover 61, with a plurality of radially contracting spring pieces 621 on the inner wall of sleeve 62; Damping pad 63 is used to adhere to the outer surface of wire A; The end of the cover 61 away from the protrusion 11 is provided with a hollow end plate 611, the inner diameter of the end plate 611 being smaller than the outer diameter of the sleeve 62.

[0029] As an optional implementation of this utility model, when wiring after assembling the plug-in terminal 2, select a suitable position on the wire A (ensuring that the tension of the wire A meets the electrical installation standards after wiring) and put on the damping pad 63. Then, thread the cover 61 and sleeve 62 through in sequence, and engage the spring piece 621 on the inner side of the sleeve 62 with the damping pad 63. Align the wire A with the lug 4 and connect it. Finally, tighten the cover 61 onto the protrusion 11 to complete the wiring. Finally, install the protective shell 5 between the upright plate 211 and the outer shell 1 to cover the lug 4 and the wire A (especially the exposed part of the wire A).

[0030] This implementation method specifies the selection of the existing rotary clamping cover 6 and the plug-in terminal 2 in the existing MSD. Their combination forms a socket with a relatively compact overall structural layout, provides wiring from both sides, and simplifies the wiring operation. Since the structures in this method are all common technical solutions in the field of electrical connectors, they will not be described in detail.

[0031] Furthermore, since the protective shell 5 serves as a functional component that isolates the lug 4 from the conductor A, its implementation also needs to consider ease of installation, especially its shock resistance in the operating environment. For example, when used in a new energy vehicle environment, special consideration needs to be given to ensuring that structural displacement does not occur under strong vibrations, thus preventing the lug 4 and conductor A from being exposed, and ensuring that the technical solution achieves its intended purpose of preventing electric shock. like Figure 2-6 As shown, the protective shell 5 includes a bottom shell 51 and a cover shell 52. A space is formed between the bottom shell 51 and the cover shell 52 to accommodate the wire lug 4 and / or wire A. The bottom shell 51 is detachably connected to the outer shell 1, and the cover shell 52 is detachably connected to the bottom shell 51. Both ends of the cover shell 52 abut against the vertical plate 211 and the outer shell 1, respectively. One end of the bottom shell 51 extends into the protrusion 11 and engages with the inner wall of the protrusion 11. The other end of the bottom shell 51 is an open structure 511, and the protrusion 11 and the open structure 511 are interconnected. The cover 52 and the bottom cover 51 are inserted and fitted together to cover the open part of the bottom cover 51. The bottom of the outer shell 1 is also provided with a limiting post 12. The bottom cover 51 is provided with a hole 512 that mates with the limiting post 12. The upper surface of the extension of the socket shell 21 is provided with a surrounding plate 212. The cover 52 is inserted and fitted with the bottom cover 51 and the surrounding plate 212 through a buckle 521. The bottom of the socket shell 21 is threadedly connected to the outer shell 1. The end of the bottom cover 51 near the insertion terminal 2 abuts against the included angle of the upper edge of the extension of the socket shell 21.

[0032] As an optional implementation of this utility model, when assembling the protective shell 5, one end of the bottom shell 51 extends into the protrusion 11, and the hole 512 on the open structure 511 at the other end is aligned with the limiting post 12. The end of the open structure 511 overlaps the upper edge of the socket shell 21. Of course, if... Figure 4 As shown, the portion where the open structure 511 intersects with the protrusion 11 is still attached to the inner wall of the outer casing 1. At this time, the bottom casing 51 is axially and radially locked, and there will be no offset in the MSD after the bottom casing 51 is assembled and during use. Then perform the aforementioned wiring operation.

[0033] After the wiring is completed, the cover 52 is simultaneously connected to the enclosure 212 of the bottom shell 51 and the socket shell 21 via the buckle 521. The two ends of the cover 52 also abut against the vertical plate 211 and the outer shell 1. At this time, the wire lug 4 and the wire A are completely isolated. Not only does the buckle 521 enable quick installation, but it also makes it difficult for the wire lug 4 and / or the wire A to be exposed. This ensures that even in scenarios with a lot of vibration, such as new energy vehicles, there will be no structural displacement that would expose the wire lug 4 and / or the wire A, thus ensuring electrical safety.

[0034] Example 2: Please see Figure 1-2 The present invention also provides the following technical solution: a manual maintenance switch, including the panel socket as described above, and a plug 3, the plug 3 including a prong 31 for electrically connecting the plug terminal 2, and the plug 3 is also provided with a pressure plate 32 for aligning with the protective shell 5.

[0035] As an optional implementation of this utility model, it can form a complete MSD, which is relatively compact and can ensure that after the plug 3 is removed, it will not cause an electric shock accident due to touching the wire lug 4 or the wire A. It is a MSD with high safety.

[0036] Furthermore, due to the setting of the pressure plate 32, the protective shell 5 in the assembled MSD is less likely to come loose due to vibration, thus improving its shock resistance.

[0037] The working principle and usage process of this utility model are as follows: During assembly, the plug-in terminal 2 is installed inside the outer casing 1. After the wire A passes through the rotating clamping cover 6, the protrusion 11, and the outer casing 1, it is connected to the wire lug 4. The rotating clamping cover 6 is tightened onto the protrusion 11. Then, the protective shell 5 is installed inside the outer casing 1 to cover the wire lug 4 and the wire A. During use, the plug 31 on the connector is connected to the two plug-in terminals 2 to complete the circuit closure. During maintenance, the connector can be removed. Since the insulating protective shell 5 can cover the wire lug 4 and the wire A, it can isolate the external environment from contact with the wire lug 4 and the wire A, thus preventing the operator's hands from accidentally touching the wiring area of ​​the wire A and the plug-in terminal 2, preventing electric shock accidents.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A panel socket, comprising a housing, a plug terminal for inserting a probe, and a wire lug for inserting a wire, wherein the wire lug is electrically connected to the plug terminal, characterized in that, It also includes an insulating protective housing, which is detachably connected to the outer shell and between the housing and the plug-in terminal to cover the wire lug.

2. The panel socket according to claim 1, characterized in that, The outer casing has a rectangular box structure, and the end of the outer casing has an outward protrusion. The interior of the protrusion extends through the inside and outside of the outer casing to allow wires to pass through. The axial side of the protrusion has an external thread, and it also includes a rotating clamping cover. After the rotating clamping cover is installed on the protrusion, it can restrict the axial and radial movement of the wires.

3. The panel socket according to claim 2, characterized in that, The connector includes a socket housing, female terminals, and a connecting plate. The socket housing has two upright plates, and the two female terminals are respectively inserted into the two upright plates. The top of the upright plate has an opening for the insert to pass through. The connecting plate is L-shaped, and the two ends of the connecting plate are respectively connected to the female terminals and the wire lugs. The wire lugs are threaded onto the connecting plate.

4. The panel socket according to claim 3, characterized in that, The protective housing includes a bottom shell and a cover shell, with a space between the bottom shell and the cover shell for accommodating wire lugs and / or wires to pass through. The bottom shell is detachably connected to the outer shell, and the cover shell is detachably connected to the bottom shell, with both ends of the cover shell abutting between the upright plate and the outer shell, respectively.

5. The panel socket according to claim 4, characterized in that, One end of the bottom shell extends into the protrusion and mates with the inner wall of the protrusion. The other end of the bottom shell is an open structure. The protrusion and the open structure are connected to allow for the passage of wires. The cover is inserted into the bottom shell to cover the open part of the bottom shell.

6. The panel socket according to claim 5, characterized in that, The bottom of the outer shell is also provided with a limiting post, and the bottom shell is provided with a hole that cooperates with the limiting post.

7. The panel socket according to claim 6, characterized in that, The bottom of the socket housing extends to the lower end of the connecting plate, and the upper surface of the extended portion of the socket housing is provided with a surrounding plate. The cover is engaged with the bottom shell and the surrounding plate by means of a snap fastener.

8. The panel socket according to claim 7, characterized in that, The bottom of the socket housing is threadedly connected to the outer shell, and the bottom shell abuts against the upper edge angle of the extension portion of the socket housing at one end near the plug terminal.

9. The panel socket according to claim 2, characterized in that, The rotary clamping cap includes: A cover body, one end of the inner wall of which is threaded into the protrusion; A sleeve, located inside the cover body, has a plurality of radially contracting spring tabs on its inner wall; A damping pad, the damping pad being used to conform to the outer surface of the conductor; The end of the cover away from the protrusion has a hollow end plate, the inner diameter of which is smaller than the outer diameter of the sleeve.

10. A manual inspection switch, comprising the panel socket according to any one of claims 1-9, characterized in that, It also includes a plug, which includes prongs for electrically connecting plug terminals.

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