Plug assembly for tripping device and tripping device

Abstract

The embodiment of the utility model provides a plug assembly for a tripping device and the tripping device. The plug assembly includes: a bracket including: a first coupling portion disposed on an outer side of one of a pair of first side walls of the bracket; and an accommodating space formed between the pair of first side walls; the vibrating needle assembly at least comprises a vibrating needle, is partially arranged in the accommodating space and is coupled to the wiring terminal; the base is suitable for being arranged in the jack part of the tripping device, and the base comprises a body which comprises a second coupling part and is suitable for being matched with the first coupling part; and the pair of bridging clamping pins are coupled to a pair of opposite second side walls of the body and are arranged to be capable of being pressed in the extending direction of the second side walls so as to allow the base to be removed from the jack part of the tripping device, and the pair of bridging clamping pins are arranged in the mode that the pressed direction of the pair of bridging clamping pins avoids accessories of the tripping device. Therefore, the contact stability can be improved, and the operation convenience can also be improved.

Description

TECHNICAL FIELD

[0001] Example embodiments of the present disclosure generally relate to the field of electronic devices, and in particular, to a plug assembly for a trip unit and a trip unit. BACKGROUND

[0002] The trip unit of a circuit breaker (such as a low-voltage circuit breaker) is equipped with a test port (i.e., the jack part described below) to be connected to an external test module and a computer to achieve functions such as adjustment and log reading, so as to meet the needs of daily maintenance and troubleshooting. However, the existing test port and plug have the problems of unstable contact and inconvenient plug operation. SUMMARY

[0003] The purpose of the present disclosure is to provide a plug assembly for a trip unit and a trip unit to at least partially solve the above-mentioned problems and / or other potential problems existing in conventional trip units.

[0004] In a first aspect of the present disclosure, a plug assembly for a trip unit is provided. The plug assembly comprises: a bracket comprising: a first coupling part arranged on the outside of one of a pair of first side walls of the bracket; and a receiving space formed between the pair of first side walls and adapted to accommodate and secure a terminal end of a cable; a spring pin assembly comprising at least a spring pin, the spring pin being partially arranged in the receiving space and coupled to the terminal end; and a base adapted to be arranged in a jack part of the trip unit to allow the spring pin to be coupled with the trip unit, the base comprising: a body comprising a second coupling part adapted to cooperate with the first coupling part to limit the bracket within the base; and a pair of jumper lugs coupled on a pair of opposite second side walls of the body and arranged to be pressed along the extension direction of the second side walls to allow the base to be removed from the jack part of the trip unit, wherein the pair of jumper lugs are arranged to avoid the accessories of the trip unit in the pressing direction thereof.

[0005] In embodiments according to the present disclosure, the base can firmly limit the bracket through cooperation of the second coupling part with the first coupling part of the bracket, avoiding loosening or displacement of the plug assembly in use. Through the pair of jumper lugs of the base, which can be pressed along the extension direction of the second side walls, the user can conveniently disassemble the plug assembly, improving the convenience of operation. At the same time, the pressing direction of the pair of jumper lugs avoids the accessories of the trip unit, avoiding interference of the accessories of the trip unit with the operation, improving the convenience and safety of the disassembly process. Other benefits will be described below in conjunction with the corresponding embodiments.

[0006] In some embodiments, the bracket further includes a plug-in portion disposed at an end of the bracket distal from the base, and the plug assembly further includes a connection portion coupled to an end of the cable and adapted to be coupled to the plug-in portion to secure the terminal end of the cable in the accommodation space.

[0007] In some embodiments, the bracket further includes an opening portion formed in the third side wall adjacent to the first coupling portion to allow the connection portion and the terminal end of the cable to be inserted into the accommodation space.

[0008] In some embodiments, the body of the base further includes a shielding portion extending in the insertion direction of the bracket and adapted to cover the opening portion when the bracket is coupled to the base.

[0009] In some embodiments, each of the pair of jumper lugs includes a fixing portion coupled to a corresponding second side wall of the body, a pair of latching portions respectively elastically coupled to the fixing portion in the insertion direction of the bracket, each latching portion including a third coupling portion disposed on the outer wall and adapted to cooperate with a fourth coupling portion of the jack portion to position the plug assembly in the jack portion, and a pressing portion outwardly bent to the pair of latching portions to allow the pair of pressing portions to be pressed to disengage the third coupling portion from the fourth coupling portion.

[0010] In some embodiments, the fixing portion includes a fool-proof groove adapted to cooperate with a fool-proof post of the jack portion to allow the plug assembly to be inserted into the jack portion in a correct orientation.

[0011] In some embodiments, the base further includes a recessed portion having a plurality of pogo pin holes in a first bottom wall of the recessed portion to allow the pogo pins to be exposed to an outside of the base.

[0012] In some embodiments, the bracket further includes a guide rail disposed outside a first side wall of the pair of first side walls opposite to the first coupling portion in the insertion direction of the bracket, and the base includes a slide disposed inside a side wall adjacent to the guide rail and adapted to cooperate with the guide rail to allow the bracket to be inserted into the base.

[0013] In some embodiments, the first coupling portion includes at least one first boss, and the second coupling portion includes at least one first positioning hole disposed on a second side wall of the body opposite to the at least one first boss and adapted to accommodate the at least one first boss.

[0014] In some embodiments, the third coupling portion includes at least one second boss, and the fourth coupling portion includes at least one second positioning hole disposed on a wall of the jack portion opposite to the at least one second boss and adapted to accommodate the at least one second boss.

[0015] In some embodiments, the ejection pin assembly further comprises: a circuit board disposed in the receiving space of the holder away from the cable insertion end and adapted for the ejection pin to be disposed thereon.

[0016] In some embodiments, the bridging tang is integrally formed with the body of the base.

[0017] In a second aspect of the present disclosure, a disconnecting device is provided. The disconnecting device comprises: a jack portion comprising a fourth coupling portion disposed on a fourth side wall of the jack portion and a plurality of signal holes disposed on a second bottom wall of the jack portion; an accessory coupled on a mounting portion of the disconnecting device and disposed adjacent to the jack portion; and a plug assembly according to the first aspect described above, detachably coupled into the jack portion.

[0018] In some embodiments, the jack portion further comprises: a fool-proof post coupled on a fifth side wall of the jack portion and adapted to cooperate with a fool-proof slot of the plug assembly.

[0019] In some embodiments, the jack portion further comprises: an annular protrusion disposed on a third bottom wall of the jack portion and surrounding a portion of the ejection pin hole, the annular protrusion adapted to cooperate with an inner recess of the base of the plug assembly.

[0020] It is to be understood that the matters described herein are not intended to be key or essential features of the embodiments of the present disclosure, and are not used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by describing in detail some embodiments thereof with reference to the attached drawings in which:

[0022] Figure 1 A structural schematic diagram of a disconnecting device according to some embodiments of the present disclosure is shown;

[0023] Figure 2 A structural schematic diagram of a plug assembly inserted into a jack portion according to some embodiments of the present disclosure is shown;

[0024] Figure 3 A structural schematic diagram of a jack portion according to some embodiments of the present disclosure is shown;

[0025] Figure 4 A structural schematic diagram of a connection portion with a cable disposed in a holder according to some embodiments of the present disclosure is shown;

[0026] Figure 5 and Figure 6A structural schematic diagram of a bracket according to some embodiments of the present disclosure is shown; and

[0027] Figures 7 to 9 A structural schematic diagram of a base according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0028] Embodiments of the present disclosure will be described in more detail with reference to the drawings. Although certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It is understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.

[0029] In the description of embodiments of the present disclosure, the term "comprising" and its conjugations should be understood to encompass the meanings of "including but not limited to", "including at least" and "including at least one but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions can also be included below. The terms "first", "second", etc. can refer to different or same objects. Other explicit and implicit definitions can also be included below.

[0030] As briefly mentioned above, the existing test port and plug of the tripping device have the problems of unstable contact and inconvenient plug operation. To illustrate, the tripping device adopts a plum blossom head test port, and the plug also adopts a plum blossom head structure. The plum blossom head structure has the characteristics of compact structure and small operation space, and is suitable for scenes with limited space. However, the plum blossom head structure has the problem of unstable contact, which may not guarantee the accuracy of the data during testing, thereby affecting the use experience.

[0031] In addition, some tripping devices adopt a square plug, which has better contact stability than the plum blossom head structure and is more suitable for application scenarios that require high stability. However, the square plug has a relatively irregular shape and is not as aesthetically pleasing as the plum blossom head port. In addition, after the electric operation system is used together, the operation space of the external clamping feet of the square plug is limited, making the operation less convenient. Especially in the layout of multiple knobs, due to insufficient space, the arrangement of the spring needles of the plug cannot be kept in the same direction as the knobs.

[0032] To address, or at least partially address, the aforementioned problems or other potential problems of existing tripping devices, embodiments of this disclosure provide a plug assembly for a tripping device and a tripping device solution. The plug assembly includes a bracket, a spring pin assembly, and a base. Further, the bracket includes a first coupling portion and a receiving space. The first coupling portion is disposed on the outer side of one of a pair of first sidewalls of the bracket. The receiving space is formed between the pair of first sidewalls and is adapted to receive and secure a cable terminal. Further, the spring pin assembly includes at least a spring pin. The spring pin is partially disposed in the receiving space and coupled to the terminal. Further, the base is adapted to be disposed in a socket portion of the tripping device to allow the spring pin to couple with the tripping device. The base includes a body and a pair of jumper pins. The body includes a second coupling portion. The second coupling portion is adapted to cooperate with the first coupling portion to confine the bracket within the base. The pair of bridging feet are coupled to a pair of opposing second sidewalls of the body and are arranged to be pressed along the extension direction of the second sidewalls to allow the base to be removed from the socket of the tripping device, wherein the pair of bridging feet are arranged such that their pressing direction avoids the attachment of the tripping device.

[0033] In this way, the base engages with the first coupling part of the bracket via the second coupling part, thereby securely holding the bracket within the base. This arrangement improves the coupling stability between the plug assembly and the tripping device, preventing the plug from loosening or shifting during use. Simultaneously, a pair of bridging clips are arranged to be pressable along the extension direction of the second sidewall, allowing the plug assembly to be easily removed from the socket of the tripping device, improving the ease of disassembly and operational flexibility.

[0034] Furthermore, by ensuring the pressing direction of the pair of jumper pins avoids interference from the tripping device accessories, disassembly difficulties caused by accessory interference are avoided, improving user comfort and safety. Therefore, the plug assembly is easier and faster to install, use, and remove, while ensuring reliable and safe connections.

[0035] The following will combine Figures 1 to 9 This describes an example structure and operation of the plug assembly 110 in the tripping device 100 of a switching device such as a molded case circuit breaker. Figures 1 to 3 As shown, the tripping device 100 according to an embodiment of the present disclosure includes a socket portion 101, an accessory 102, and a plug assembly 110. The socket portion 101 is used to connect with the plug assembly 110 to realize the transmission and control of electrical signals.

[0036] Specifically, the socket portion 101 includes a fourth coupling portion and a plurality of signal holes 1012. The fourth coupling portion is arranged on the fourth side wall of the socket portion 101, while the plurality of signal holes 1012 are arranged on the second bottom wall of the socket portion 101.

[0037] Further, the fourth coupling portion is configured to cooperate with a third coupling portion of the plug assembly 110 to ensure that the plug assembly 110 can be securely inserted into the socket portion 101 and form a stable electrical connection therewith. The size, shape and position of the fourth coupling portion are selected according to actual requirements, so that the plug assembly 110 can be coupled with the socket portion 101 in the correct direction and position, avoiding misplug or poor contact during connection.

[0038] Further, the plurality of signal holes 1012 are arranged to provide a passage for electrical signals, and the signals are transmitted by connecting with the pogo pins 1301 in the plug assembly 110. For example, the number of the plurality of signal holes 1012 can be 8 or other number of signal holes 1012. The arrangement direction of the plurality of signal holes 1012 is perpendicular to the arrangement direction of the plurality of knobs 104. In other words, the accessory 102 is arranged in the arrangement direction of the plurality of signal holes 1012, and does not interfere with the arrangement direction of the plurality of knobs 104.

[0039] Further, the accessory 102 is coupled to the mounting portion 103 of the trip unit 100 and is arranged adjacent to the socket portion 101. The accessory 102 can provide additional functions as needed, for example, the accessory 102 is a component such as an electric handle and a rotating handle.

[0040] Further, the plug assembly 110 is detachably coupled into the socket portion 101. When the plug assembly 110 is inserted into the socket portion 101, stable electrical connection between the plug assembly 110 and the trip unit 100 can be achieved through cooperation with the fourth coupling portion and the signal holes 1012. When the plug assembly 110 needs to be detached, the user only needs to press a pair of jumper pins 141 of the plug assembly 110 to release the plug assembly 110, and the accessory 102 arranged to avoid the trip unit 100 in the direction in which it is pressed. The specific implementation will be described in detail below.

[0041] In this way, through the detachable coupling structure of the socket portion 101 and the plug assembly 110, not only the stability of the electrical connection is ensured, but also the installation and maintenance are facilitated, and the operation of various accessories 102 of the circuit breaker is avoided. And it can be operated conveniently with one hand.

[0042] In some embodiments, the jack portion 101 further comprises a fool-proof column 1014. The fool-proof column 1014 is coupled on the fifth side wall of the jack portion 101, and is configured to cooperate with the fool-proof groove 1415 of the plug assembly 110. Specifically, the fool-proof column 1014 can effectively guide the plug assembly 110 to ensure its correct orientation when being inserted into the jack portion 101, thereby avoiding poor electrical contact or connection failure caused by misinsertion. The structure and position of the fool-proof column 1014 can be arranged as needed, so that the plug assembly 110 can only be inserted in the correct orientation, further improving the reliability and safety of electrical connection.

[0043] Further, the fool-proof column 1014 corresponds in size and shape to the fool-proof groove 1415, and ensures that the plug assembly 110 is always correctly inserted in the predetermined direction through physical guidance. This not only reduces the complexity of the operation, but also effectively avoids the problem of device damage or poor contact caused by the user inserting in the wrong direction.

[0044] In some embodiments, the jack portion 101 further comprises an annular protrusion 1013. The annular protrusion 1013 is arranged on the third bottom wall of the jack portion 101 and surrounds part of the spring needle holes 1405. The annular protrusion 1013 is configured to cooperate with the inner recess 1404 of the base 140 of the plug assembly 110 to enhance the positioning stability and connection accuracy between the plug assembly 110 and the jack portion 101. For example, the annular protrusion 1013 can surround 6 of the 8 signal holes 1012. Of course, it can also surround other numbers of signal holes 1012, which are not specifically limited in embodiments of the present disclosure. The spring needles 1301 of the plug assembly 110 can be inserted into only 5 of the 8 signal holes 1012 or other numbers of signal holes 1012, which are also not specifically limited in embodiments of the present disclosure.

[0045] Specifically, the annular protrusion 1013 forms a positioning area on the third bottom wall of the jack portion 101, so that the base 140 of the plug assembly 110 can tightly cooperate with the annular protrusion 1013 after being inserted into the jack portion 101. When the plug assembly 110 is inserted into the jack portion 101, the inner recess 1404 of the base 140 is in contact with the annular protrusion 1013, ensuring that the orientation and position of the plug assembly 110 remain unchanged after being inserted, thereby avoiding the problems of possible deviation or misalignment of the plug assembly 110.

[0046] Further, the cooperation structure of the annular protrusion 1013 and the inner recess 1404 not only provides additional mechanical fixation, but also effectively increases the creepage distance, further enhancing the insulation performance of the electrical connection.

[0047] The following will be described in detail with reference to the specific embodiments of the present disclosure. Figures 1 to 9The specific structure of the plug assembly 110 will be described. In the embodiments of the present disclosure, the plug assembly 110 generally comprises a bracket 120, a spring pin assembly 130 and a base 140, aiming to improve the stability, operation convenience and compatibility with the tripping device 100 of the plug assembly 110.

[0048] Further, the bracket 120 comprises a first coupling part and a receiving space. The first coupling part is arranged on the outside of one of the pair of first side walls of the bracket 120. The first coupling part is coupled with a second coupling part of the body of the base 140 described below, so that the bracket 120 and the base 140 are firmly connected. The receiving space of the bracket 120 is formed between the pair of first side walls and is used to accommodate and fix the wiring end of the cable 105, ensuring that the connection of the cable 105 is stable and reliable, preventing the problem of loosening or disconnection during use.

[0049] Further, the spring pin assembly 130 comprises at least a plurality of spring pins 1301, which are partially arranged in the receiving space and coupled to the wiring end. The spring pins 1301 enable the plug to be stably connected with the tripping device 100 through elastic contact, so as to ensure that the plug can be stably electrically connected with the tripping device 100 during use, while ensuring the stability of signal or power transmission. For example, the plurality of spring pins 1301 comprises 5 spring pins 1301 or other number of spring pins 1301, which are not specifically limited in the embodiments of the present disclosure.

[0050] Further, the base 140 is adapted to be arranged in the jack part 101 of the tripping device 100 to allow the spring pins 1301 to be coupled with the tripping device 100. The base 140 comprises a body and a pair of bridging lugs 141. The body is provided with a second coupling part. The second coupling part cooperates with the first coupling part to limit the bracket 120 in the base 140, so that the plug assembly 110 is stable during insertion and use and cannot be dislodged or displaced. The pair of bridging lugs 141 are coupled on the pair of opposite second side walls of the body and are arranged to be pressed along the extension direction of the second side walls. Such an arrangement can provide a quick and convenient disassembly method when needed, so that the base 140 can be removed from the jack part 101 of the tripping device 100. It is worth noting that the pressing direction of the pair of bridging lugs 141 is arranged to avoid the accessories 102 of the tripping device 100, so that such an arrangement can avoid interference with other accessories 102 during disassembly, improving the operation convenience.

[0051] In this way, the plug assembly 110, through the cooperation of the bracket 120, the spring pin assembly 130 and the base 140, not only ensures the stability of the connection, but also improves the convenience of disassembly operation, which can effectively improve the use experience of the tripping device 100.

[0052] AsFigures 4 to 6 As shown, in some embodiments, the bracket 120 further includes a plug portion 1202, and the plug assembly 110 further includes a connection portion 106. The plug portion 1202 is disposed at one end of the bracket 120 away from the base 140 for connection with the connection portion 106.

[0053] Furthermore, the connector 106 is located at the end of the cable 105 and is adapted to couple with the plug 1202. By inserting the connector 106 into the plug 1202, the terminal of the cable 105 is secured in the receiving space of the bracket 120, ensuring that the end of the cable 105 is stable and does not loosen during use. The cooperation between the connector 106 and the plug 1202 not only achieves a secure connection of the cable 105, but also facilitates disassembly and maintenance, ensuring that the plug assembly 110 maintains a good connection condition during long-term use.

[0054] In this way, by providing a plug portion 1202 in the bracket 120 and a connecting portion 106 in the plug assembly 110, the connection between the cable 105 and the plug assembly 110 is further improved. This ensures the fixation of the cable 105 end and improves the stability and ease of use of the plug assembly 110. Simultaneously, it effectively prevents the cable 105 terminals from loosening or breaking, thus enhancing the reliability and service life of the entire plug assembly 110.

[0055] In some embodiments, the bracket 120 further includes an opening to facilitate the insertion and securing of the cable 105 connector 106. Specifically, the opening is formed on the third sidewall adjacent to the first coupling portion, and provides a convenient insertion channel for the connector 106 of the plug assembly 110 and the terminal of the cable 105. By providing the opening on the bracket 120, the connector 106 and the terminal of the cable 105 can be inserted into the receiving space, thereby achieving a secure connection of the cable 105.

[0056] Furthermore, the size and position of the opening can be arranged as needed to ensure that the end of the cable 105 and the connector 106 can be inserted into the receiving space, while avoiding interference or jamming between the cable 105 and the bracket 120. The opening not only improves the ease of assembly of the plug assembly 110, but also enhances the stability of the cable 105 connection, ensuring that the cable 105 can be firmly positioned within the receiving space during the connection process, thereby avoiding loose connections or poor contact.

[0057] like Figures 7 to 9 As shown, in some embodiments, the body of the base 140 further includes a shielding portion 1403. The shielding portion 1403 extends along the insertion direction of the bracket 120, and after the bracket 120 is coupled to the base 140, the shielding portion 1403 is adapted to cover the opening on the bracket 120.

[0058] When the bracket 120 is coupled with the base 140, the shielding portion 1403 will cover the opening portion, thereby preventing dust, moisture or other external substances from entering the opening portion, avoiding pollution or damage to the cable 105 connecting portion 106, while not affecting the normal plug-in and plug-out operation of the plug assembly 110. In addition, the shielding portion 1403 can make the overall appearance of the plug assembly 110 more compact and beautiful.

[0059] In some embodiments, the pair of bridging clamping legs 141 includes a pair of fixing portions 1411, two pairs of clamping portions 1412 and a pair of pressing portions 1413, aiming to provide stable connection and allow disassembly of the plug assembly 110 through pressing operation.

[0060] Further, the pair of fixing portions 1411 are respectively coupled on the second side wall of the body of the base 140, which can ensure the stable position of the pair of bridging clamping legs 141 on the base 140, and provide reliable support force to ensure the stable connection of the plug assembly 110.

[0061] Further, the two pairs of clamping portions 1412 are respectively arranged along the insertion direction of the bracket 120, and can be elastically coupled to the pair of fixing portions 1411. The elastic arrangement of the clamping portion 1412 can ensure that the plug assembly 110 can be firmly fixed in the jack portion 101 when inserted, preventing the plug from loosening or falling off during use. Further, each clamping portion 1412 includes a third coupling portion located on the wall surface of the clamping portion 1412 away from the fixing portion 1411, and is adapted to cooperate with the fourth coupling portion of the jack portion 101, thereby stably limiting the plug assembly 110 within the jack portion 101. This allows the plug assembly 110 to remain fixed after being inserted into the jack portion 101, avoiding the shift of the plug position due to external vibration or tension.

[0062] Further, the pair of pressing portions 1413 are respectively outwardly bently coupled to the two pairs of clamping portions 1412. In other words, one pressing portion 1413 is coupled to a pair of clamping portions 1412. When it is necessary to disassemble the plug assembly 110, the user can press the pair of pressing portions 1413, and through the pressing force, the third coupling portion is separated from the fourth coupling portion, thereby releasing the connection between the plug assembly 110 and the jack portion 101. This makes the disassembly process of the plug assembly 110 more convenient and fast, reduces the difficulty of user operation, and improves the use convenience of the plug assembly 110.

[0063] In some embodiments, one of the fixing portions 1411 includes a fool-proof groove 1415. The fool-proof groove 1415 is configured to cooperate with the fool-proof post 1014 of the socket portion 101 to guide and limit the insertion direction of the plug assembly 110. The cooperation between the fool-proof groove 1415 and the fool-proof post 1014 ensures that the plug assembly 110 is always inserted into the socket portion 101 in the correct orientation, thereby avoiding poor connection or failure to insert due to incorrect insertion direction of the plug assembly 110.

[0064] Further, the size, shape and position of the fool-proof groove 1415 can be arranged as needed to cooperate with the fool-proof post 1014 of the socket portion 101 to ensure that the plug assembly 110 can only be inserted in the correct orientation. With this arrangement, the user does not need to make too many judgments and operations when installing the plug, and the plug assembly 110 is automatically guided to the correct insertion direction, improving the convenience and accuracy of the insertion process.

[0065] As shown in Figure 7 some embodiments, the base 140 further includes an inner recess 1404. The inner recess 1404 is configured to couple with the annular protrusion 1013 of the socket portion 101 to ensure the correct position of the pogo pins 1301 and increase the creepage distance. Further, a plurality of pogo pin holes 1405 are provided on a first bottom wall of the inner recess 1404. The pogo pin holes 1405 allow the pogo pins 1301 to be exposed outside the base when the bracket 120 is inserted into the base 140, thereby achieving electrical connection between the plug assembly 110 and the base 140.

[0066] Further, the positions and sizes of the plurality of pogo pin holes 1405 can be arranged as needed to ensure that each pogo pin 1301 can be docked to the corresponding contact, thereby ensuring the stability and reliability of the electrical connection. At the same time, the shape and size of the inner recess 1404 can also be arranged as needed to accommodate the space required when the bracket 120 is inserted into the base 140, while ensuring the alignment of the pogo pin holes 1405 and the insertion of the pogo pins 1301.

[0067] Continuing to refer to Figure 6 and Figure 8 In some embodiments, the bracket 120 includes a guide rail 1203. The guide rail 1203 is arranged along the insertion direction of the bracket 120 and located outside the first side wall of the pair of first side walls of the bracket 120 opposite the first coupling portion. The guide rail 1203 is configured to guide the bracket 120 to maintain the correct trajectory when inserted into the base 140, ensuring that the bracket 120 can be stably inserted into the base 140, while avoiding the offset or jamming phenomenon that may occur during insertion.

[0068] Further, the base 140 includes a slide 1406. The slide 1406 is arranged on the inner side of the side wall of the base 140 adjacent to the guide rail 1203. The slide 1406 is intended to cooperate with the guide rail 1203, and when the support 120 is inserted into the base 140, the cooperation between the guide rail 1203 and the slide 1406 can effectively guide the support 120 to smoothly enter the base 140 in a predetermined direction. The slide 1406 can enable the support 120 to remain stable when inserted into the base 140 and prevent the occurrence of jamming. The cooperation of the slide 1406 with the guide rail 1203 not only improves the smoothness during insertion, but also reduces the force required when the plug assembly 110 is inserted, improving the user's operation experience.

[0069] Through the cooperation of the support 120 and the base 140, the insertion action is more stable, avoiding the asymmetric insertion or difficult docking of the existing plug assembly 110.

[0070] As shown in Figure 4 and Figure 5 , in some embodiments, the first coupling part includes at least one first boss 1201, and the second coupling part includes at least one first limiting hole 1402. The first boss 1201 is used to cooperate with the first limiting hole 1402 in the second coupling part of the base 140 when the support 120 is coupled with the base 140, thereby ensuring the close coupling between the support 120 and the base 140, and preventing the falling or loosening caused by external force. For example, the at least one first boss 1201 can include 2 bosses, and the at least one first limiting hole 1402 can also include 2 limiting holes.

[0071] Specifically, the first limiting hole 1402 is arranged on the second side wall of the base 140 body opposite to the first boss 1201, and its size and shape can be arranged as needed to accommodate the first boss 1201. When the support 120 is inserted into the base 140, the relative position between the support 120 and the base 140 is stabilized through the cooperation of the first boss 1201 and the first limiting hole 1402, avoiding the position deviation or disengagement of the plug assembly 110 during use. For example, the first boss 1201 can be arranged away from the accessory 102.

[0072] Continuing to refer to Figure 3 , Figures 7 to 9In some embodiments, the third coupling part includes at least one second boss 1414, and the fourth coupling part includes at least one second limiting hole 1011. Specifically, the second boss 1414 is located on the clamping part 1412 of the plug assembly 110. When the plug assembly 110 is inserted into the socket part 101, the cooperation between the second boss 1414 and the second limiting hole 1011 ensures that the plug assembly 110 remains stable after insertion and prevents the plug assembly 110 from loosening or disengaging due to external forces. For example, the at least one second boss 1414 can include four bosses, and the at least one second limiting hole 1011 can also include four limiting holes, which are respectively distributed at the four corners to ensure the stability of the connection.

[0073] Further, the second limiting hole 1011 is arranged on the wall of the socket part 101 opposite to the second boss 1414, and its shape and size can be arranged as needed to accommodate and fix the second boss 1414. When the plug assembly 110 is inserted into the socket part 101, the second boss 1414 is inserted into the second limiting hole 1011, forming a firm mechanical lock, thereby achieving stable connection between the plug assembly 110 and the socket part 101.

[0074] In some embodiments, the spring needle assembly 130 further includes a circuit board 1302. The circuit board 1302 is arranged at one end of the accommodating space of the support 120 and away from the side where the cable 105 is inserted. The circuit board 1302 serves as a stable support platform for the arrangement of the spring needles 1301, ensuring that each spring needle 1301 can be accurately placed and connected with the electrical contact. At the same time, the circuit board 1302 is electrically connected with the connection part 106.

[0075] It can be understood that the size, thickness and material of the circuit board 1302 can adapt to the structural requirements of the support 120 and provide sufficient support force and space for the spring needles 1301 to achieve the docking of the spring needles 1301.

[0076] In addition, the arrangement position of the circuit board 1302 inside the support 120 also effectively avoids the interference generated during the insertion of the cable 105, while providing suitable space for the arrangement of the spring needles 1301, ensuring that the spring needles 1301 are not affected by external forces during operation, and ensuring the stability of their elasticity and contact force.

[0077] In some embodiments, the jumper lug 141 is integrally formed with the body of the base 140. By integrating the jumper lug 141 with the body of the base 140, the problem of structural instability caused by improper assembly or loose connection points in traditional designs is avoided, thereby improving the overall strength and structural stability of the plug assembly 110.

[0078] In addition, the integrally formed manner makes the jumper feet 141 and the base 140 body more consistent and coordinated during use, can provide higher tensile, bending and anti-vibration ability during bearing external force or operation, and ensures the stability of the plug assembly 110 in complex environment.

[0079] The implementations of the disclosure have been described above with the intent to be illustrative rather than limiting. Although the implementations described above have particular applications, it will be apparent to those of ordinary skill in the art that a number of modifications and variations can be made without departing from the scope and spirit of the described implementations. None of the features to be presented herein are necessary for all implementations. No characteristics, either singular or combined, is necessary that are not specifically recited in a claim. The description as presented is considered factual and is intended to convey actual or future implementations rather than limit the scope and breadth to a set of described implementations. Various modifications and changes can be made thereto by those skilled in the art without departing from the spirit and scope of the described implementations. It should be understood that the described implementations are merely examples of implementations and are not the only way implementations could be made and used.

Claims

1. A plug assembly for a trip unit, characterized by, Comprising: a bracket (120) comprising: a first coupling portion disposed on an outer side of one of a pair of first side walls of the bracket (120); and an accommodation space formed between the pair of first side walls and adapted to accommodate and secure a terminal end of a cable (105); a spring pin assembly (130) comprising at least a spring pin (1301) partially disposed in the accommodation space and coupled to the terminal end; and a base (140) adapted to be disposed in a jack portion (101) of a tripping device to allow the spring pin (1301) to be coupled with the tripping device, the base (140) comprising: a body (1401) comprising a second coupling portion adapted to cooperate with the first coupling portion to position the bracket (120) within the base (140); and a pair of jumper lugs (141) coupled on a pair of opposite second side walls of the body (1401) and disposed to be pressed along an extension direction of the second side walls to allow the base (140) to be removed from the jack portion (101) of the tripping device, wherein the pair of jumper lugs (141) are disposed to have their pressing directions away from an accessory (102) of the tripping device.

2. The plug assembly of claim 1, wherein, The bracket (120) further comprises: a plug portion (1202) disposed at an end of the bracket (120) away from the base (140), and The plug assembly further comprises: a connecting portion (106) coupled to an end of the cable (105) and adapted to be coupled to the plug portion (1202) to secure the terminal end of the cable (105) in the accommodation space.

3. The plug assembly of claim 2, wherein, The bracket (120) further comprises: an opening portion formed in a third side wall adjacent to the first coupling portion to allow the connecting portion (106) and the terminal end of the cable (105) to be inserted into the accommodation space.

4. The plug assembly of claim 3, wherein, The body (1401) of the base (140) further comprises: a shielding portion (1403) extending along an insertion direction of the bracket (120) and adapted to cover the opening portion when the bracket (120) is coupled in the base (140).

5. The plug assembly of any one of claims 1-4, wherein, Each jumper lug (141) of the pair of jumper lugs (141) comprises: a fixing portion (1411) coupled on a corresponding second side wall of the body (1401); a pair of latching portions (1412) respectively elastically coupled to the fixing portion (1411) along the insertion direction of the bracket (120) and each comprising a third coupling portion disposed on an outer wall and adapted to cooperate with a fourth coupling portion of the jack portion (101) to position the plug assembly in the jack portion (101); and a pressing portion (1413) outwardly bently coupled to the pair of latching portions (1412) to allow the pair of pressing portions (1413) to be pressed such that the third coupling portion is disengaged from the fourth coupling portion.

6. The plug assembly of claim 5, wherein, The fixing portion (1411) comprises: A fool-proof groove (1415) adapted to cooperate with a fool-proof post (1014) of the jack portion (101) to allow the plug assembly to be inserted into the jack portion (101) in a correct orientation.

7. The plug assembly of any one of claims 1-4 and 6, wherein, The base (140) further comprises: An inner recess (1404) having a plurality of pogo pin holes (1405) on a first bottom wall thereof to allow the pogo pins (1301) to pass through and be exposed outside the base (140).

8. The plug assembly of any one of claims 1-4 and 6, wherein, The bracket (120) further comprises: A guide rail (1203) disposed on an outer side of a first side wall of the pair of first side walls opposite to the first coupling portion in an insertion direction of the bracket (120), and The base (140) comprises: A slide (1406) disposed on an inner side of a side wall adjacent to the guide rail (1203) and adapted to cooperate with the guide rail (1203) to allow the bracket (120) to be inserted into the base (140).

9. The plug assembly of any of claims 1-4 and 6, wherein, The first coupling portion comprises: At least one first boss (1201), and The second coupling portion comprises: At least one first limiting hole (1402) disposed on a second side wall of the body (1401) opposite to the at least one first boss (1201) and adapted to accommodate the at least one first boss (1201).

10. The plug assembly of claim 5, wherein, The third coupling portion comprises: At least one second boss (1414), and The fourth coupling portion comprises: At least one second limiting hole (1011) disposed on a wall of the jack portion (101) opposite to the at least one second boss (1414) and adapted to accommodate the at least one second boss (1414).

11. The plug assembly of claim 7, wherein, The pogo pin assembly (130) further comprises: A circuit board (1302) disposed in the accommodation space of the bracket (120) away from an end of the cable (105) inserted into and adapted for the pogo pins (1301) to be disposed thereon.

12. The plug assembly of any of claims 1-4, 6, and 10-11, wherein, The jumper lug (141) is integrally formed with the body (1401) of the base (140).

13. A trip unit, characterized by: Comprising: A jack portion (101) comprising a fourth coupling portion disposed on a fourth side wall of the jack portion (101) and a plurality of signal holes (1012) disposed on a second bottom wall of the jack portion (101); An accessory (102) coupled to a mounting portion of the tripping device and disposed adjacent to the jack portion (101); and The plug assembly according to any one of claims 1-12, detachably coupled into the jack portion (101).

14. The trip unit of claim 13, wherein, The jack portion (101) further comprises: A fool-proof post (1014) coupled to a fifth side wall of the jack portion (101) and adapted to cooperate with a fool-proof groove (1415) of the plug assembly.

15. The trip unit of claim 13 wherein, The jack portion (101) further comprises: A ring-shaped protrusion (1013) is arranged on the third bottom wall of the insertion hole (101) and surrounds the partial needle hole (1405). The ring-shaped protrusion (1013) is adapted to cooperate with the inner recess (1404) of the base (140) of the plug assembly.

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