A shorting plug and connector assembly

Abstract

The application provides a short-circuit plug and a connector assembly, and belongs to the technical field of connecting devices. The short-circuit plug comprises a plug shell, an insulator and a resistor with two end pins. Two groups of plug contact pieces connected with the two end pins of the resistor are fixed on the insulator. Each group of plug contact pieces comprises at least two plug contact pieces. The front end of each plug contact piece is a plug-in end. The pin at one end of the resistor is welded and fixed with the rear end of each plug contact piece in one group of plug contact pieces. The pin at the other end of the resistor is welded and fixed with the rear end of each plug contact piece in the other group of plug contact pieces. The application realizes the short-circuit between each plug contact piece in one group and the connection between the resistor and the two groups of plug contact pieces, and simplifies the internal structure of the plug. Moreover, the rear end of each plug contact piece only needs to be welded with one pin, and the size of the plug contact piece does not need to be increased, so that the use requirement of a narrow space can be met.

Description

Technical Field

[0001] This invention relates to a shorting plug and connector assembly, belonging to the technical field of connection devices. Background Technology

[0002] Electronic fuses are widely used in blasting operations in fields such as mining, tunnel construction, large-scale infrastructure, and urban development. To prevent accidental explosions during the production testing phase, electronic fuses used in blasting operations require simulation test plugs instead of actual industrial detonators. These plugs are not filled with explosives and have resistors connected in designated locations to allow them to repeatedly withstand short-term overload currents during reuse.

[0003] For example, the Chinese utility model patent with authorization announcement number CN202815026U discloses a socket and plug for ignition testing and safety protection state switching of pyrotechnics. The plug includes a housing, an insulating core (i.e., an insulator) disposed within the housing, and at least one set of pins fixed on the insulating core. In one embodiment, a set of pins D includes eight pins: D1, D2, D3, D4, D5, D6, D7, and D8. Pins D5-D8 are redundant of pins D1-D4. Pins D1 and D2 are connected to the two ends of the pyrotechnic current-limiting resistor R through wires, and pins D5 and D6 are also connected to the two ends of the pyrotechnic current-limiting resistor R through wires. This is equivalent to pins D1 and D5 being short-circuited, and D2 and D6 being short-circuited. The pyrotechnic current-limiting resistor R is connected between the two short-circuited pairs of pins.

[0004] In actual wiring, if pins D1, D2, D5, and D6 are each connected to the resistor via wires, it would result in a large number of wires and complex internal wiring of the plug. Therefore, a single wire is typically used to connect the two pins that need to be shorted, so that the resistor pin only needs to be connected to one of the pins. Due to the size of the pins, the connection between the wire and the pin, as well as the connection between the resistor pin and the pin, can only be soldered. A solder cup is usually placed at the end of the pin. During soldering, the wire end is inserted into the solder cup, and the wire is connected to the pin by melting solder. However, since the resistor pin also needs to be inserted into the same solder cup, the inner diameter of the solder cup must be large enough, resulting in a large outer diameter of the pin (i.e., the plug contact), which cannot meet the requirements of use in confined spaces. Furthermore, the above method requires an additional wire to short-circuit the two pins, making the internal structure of the plug complex. Summary of the Invention

[0005] The purpose of this invention is to provide a shorting plug to solve the problems in the prior art where the wire core at the end of the conductor and the pin of the resistor are inserted into the solder cup of the same plug contact, resulting in a large plug contact size that cannot meet the requirements for use in confined spaces, and the need to use an additional wire between the two shorted plug contacts, which leads to a complex internal structure of the plug; the purpose of this invention is also to provide a connector assembly to solve the above problems.

[0006] To achieve the above objectives, the shorting plug in this invention adopts the following technical solution:

[0007] A shorting plug includes a plug housing, an insulator fixed on the plug housing, and a resistor located inside the plug housing with leads at both ends. Two sets of plug contacts are fixed on the insulator and are respectively connected to the leads at both ends of the resistor. Each set of plug contacts includes at least two plug contacts, and the front end of each plug contact is a plug-in end. One lead of the resistor is welded and fixed to the rear end of each plug contact in one set of plug contacts, and the other lead of the resistor is welded and fixed to the rear end of each plug contact in the other set of plug contacts.

[0008] The beneficial effects of the above technical solution are as follows: This invention is an invention based on element modification, mainly omitting the wires between the plug contacts that need to be shorted. One end of the resistor is welded to the rear end of each plug contact in one group, and the other end of the resistor is welded to the rear end of each plug contact in another group. This achieves both short-circuiting between the plug contacts in each group and connecting the resistor between the two groups, simplifying the internal structure of the plug. Furthermore, each plug contact only needs to be welded to one pin at its rear end. Compared to some existing technologies where the rear end of the plug contact requires both a wire and a resistor pin, this invention does not require increasing the size of the plug contacts, thus meeting the requirements for use in confined spaces.

[0009] Furthermore, each plug contact in each group has a through-structure at its rear end for the corresponding pin of the resistor to pass through.

[0010] Furthermore, it passes through a U-shaped groove with a structure that allows for the connection of a plug contact.

[0011] Furthermore, all the plug contacts in each group of plug contacts are arranged in a straight line, and the two leads of the resistor are both straight.

[0012] Furthermore, the two sets of plug contacts are arranged in parallel, and the leads at both ends of the resistor are arranged in parallel.

[0013] Furthermore, the resistor body and the two leads at both ends are arranged in a U-shape.

[0014] Furthermore, the plug housing has a receiving cavity, and the insulator includes a insertion part inserted into the receiving cavity. Annular grooves are respectively provided on the outer peripheral surface of the insertion part and the inner peripheral surface of the receiving cavity. The two annular grooves are connected and filled with adhesive.

[0015] Furthermore, one of the insulator and the plug housing is provided with a protruding key, and the other is provided with a groove for the protruding key to be inserted. The protruding key and the groove are anti-rotationally engaged in the circumferential direction.

[0016] Furthermore, the plug contact is inserted into the insulator, and the outer peripheral surface of the plug contact is provided with protrusions that are interference-fitted with the insulator.

[0017] To achieve the above objectives, the connector assembly in this invention adopts the following technical solution:

[0018] A connector assembly includes a shorting plug and a shorting socket adapted to the shorting plug. The shorting socket includes a socket housing and contact parts mounted on the socket housing. The shorting plug includes a plug housing, an insulator fixed on the plug housing, and a resistor located inside the plug housing and having two leads at both ends. Two sets of plug contacts are fixed on the insulator and respectively connected to the two leads at both ends of the resistor. Each set of plug contacts includes at least two plug contacts, and the front end of each plug contact is a plug-in end. One lead of the resistor is soldered to the rear end of each plug contact in one set of plug contacts, and the other lead of the resistor is soldered to the rear end of each plug contact in the other set of plug contacts.

[0019] The beneficial effects of the above technical solution are as follows: This invention is an improved invention, further defining the specific structure of the shorting plug. Compared with the prior art, the shorting plug eliminates the need for wires between the plug contacts that need to be shorted. One end of the resistor is welded to the rear end of each plug contact in one group, and the other end of the resistor is welded to the rear end of each plug contact in another group. This achieves both shorting between the plug contacts in each group and connecting the resistor between the two groups, simplifying the internal structure of the plug. Furthermore, each plug contact only needs to be welded to one pin at its rear end. Compared to some prior art where the rear end of a plug contact requires both a wire and a resistor pin, this invention does not require increasing the size of the plug contacts, thus meeting the requirements for use in confined spaces.

[0020] Furthermore, each plug contact in each group has a through-structure at its rear end for the corresponding pin of the resistor to pass through.

[0021] Furthermore, it passes through a U-shaped groove with a structure that allows for the connection of a plug contact.

[0022] Furthermore, all the plug contacts in each group of plug contacts are arranged in a straight line, and the two leads of the resistor are both straight.

[0023] Furthermore, the two sets of plug contacts are arranged in parallel, and the leads at both ends of the resistor are arranged in parallel.

[0024] Furthermore, the resistor body and the two leads at both ends are arranged in a U-shape.

[0025] Furthermore, the plug housing has a receiving cavity, and the insulator includes a insertion part inserted into the receiving cavity. Annular grooves are respectively provided on the outer peripheral surface of the insertion part and the inner peripheral surface of the receiving cavity. The two annular grooves are connected and filled with adhesive.

[0026] Furthermore, one of the insulator and the plug housing is provided with a protruding key, and the other is provided with a groove for the protruding key to be inserted. The protruding key and the groove are anti-rotationally engaged in the circumferential direction.

[0027] Furthermore, the plug contact is inserted into the insulator, and the outer peripheral surface of the plug contact is provided with protrusions that are interference-fitted with the insulator.

[0028] Furthermore, the socket housing is an insulating housing, and the contact components are inserted into the insulating housing. The contact components include a metal sheath and a socket contact installed inside the metal sheath. The outer circumferential surface of the metal sheath is provided with barbs that are interference-fitted with the insulating housing.

[0029] Furthermore, the contact component includes a metal sheath and a socket contact installed inside the metal sheath. The front end of the socket contact is a plug-in end, and the rear end is fixed to the metal sheath. The front end of the socket contact is provided with at least two axially extending and radially penetrating the sidewall of the socket contact. There is a gap between the outer peripheral surface of the front end of the socket contact and the inner wall of the metal sheath.

[0030] Furthermore, the socket housing includes an insulating plate, and a contact component is inserted and fixed on the insulating plate. The front end of the contact component is a plug-in end, and the rear end of the contact component extends out from the rear side of the insulating plate and forms a fixed end for directly inserting into the flexible printed circuit board and welding and fixing it to the flexible printed circuit board.

[0031] Furthermore, a U-shaped protective protrusion is provided on the rear side of the insulating plate, and the rear end of the contact component is located inside the protective protrusion. The space inside the protective protrusion constitutes a receiving space for accommodating the connection end of the flexible printed circuit board. Attached Figure Description

[0032] Figure 1 This is a perspective view of the shorting plug in Embodiment 1 of the connector assembly of the present invention;

[0033] Figure 2This is a perspective view of the shorting plug in Embodiment 1 of the connector assembly of the present invention from another angle;

[0034] Figure 3 This is a cross-sectional view of the shorting plug in Embodiment 1 of the connector assembly of the present invention;

[0035] Figure 4 This is a cross-sectional view of the insulator and plug contact of the shorting plug in Embodiment 1 of the connector assembly of the present invention.

[0036] Figure 5 This is a perspective view of the insulator, plug contact, and metal film resistor of the shorting plug in Embodiment 1 of the connector assembly of the present invention;

[0037] Figure 6 This is a perspective view of the shorting socket in Embodiment 1 of the connector assembly of the present invention;

[0038] Figure 7 This is a perspective view of the shorting socket in Embodiment 1 of the connector assembly of the present invention from another angle;

[0039] Figure 8 This is a cross-sectional view of the shorting socket in Embodiment 1 of the connector assembly of the present invention;

[0040] Figure 9 This is a cross-sectional view of the contact component of the shorting socket in Embodiment 1 of the connector assembly of the present invention;

[0041] Figure 10 A perspective view of a flexible printed circuit board connected to the shorting socket in Embodiment 1 of the connector assembly of the present invention;

[0042] Figure 11 This is an assembly diagram of the shorting socket and the flexible printed circuit board in Embodiment 1 of the connector assembly of the present invention.

[0043] In the diagram: 1. Plug housing; 11. Receiving cavity; 12. Outer annular groove; 13. Annular protrusion; 14. Groove; 2. Insulator; 21. Insertion part; 22. Exposed part; 23. Raised key; 24. Inner annular groove; 3. Plug contact; 31. First pin; 32. Second pin; 33. Third pin; 34. Fourth pin; 35. U-shaped groove; 36. Protrusion; 4. Metal film resistor; 41. Resistor body; 42. Lead; 5. End cap; 6. Socket housing; 61. Insulating plate; 62. Protective protrusion; 7. Contact component; 71. Metal sheath; 711. Barb; 72. Socket contact; 721. Split groove; 8. Flexible printed circuit board; 81. Connection hole. Detailed Implementation

[0044] To address the technical problems existing in the prior art, the basic concept of this invention is to eliminate the wires between the plug contacts that need to be shorted, and to directly weld and fix the resistor pins to the rear end of each plug contact in each group of plug contacts. This achieves short-circuiting between the plug contacts in each group of plug contacts, while also connecting the resistor between the two groups of plug contacts. This simplifies the internal structure of the plug and does not require the plug contacts to be too large, thus meeting the requirements for use in confined spaces.

[0045] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0046] Embodiment 1 of the connector assembly in this invention:

[0047] The connector assembly includes a shorting plug and a shorting socket adapted to the shorting plug, the shorting plug being structured as follows: Figure 1 , Figure 2 and Figure 3 As shown, the shorting plug includes a plug housing 1, on which an insulator 2 is fixed. Specifically, the plug housing 1 has a receiving cavity 11. The insulator 2 includes an insertion part 21 inserted into the receiving cavity 11. Annular grooves are respectively provided on the outer circumferential surface of the insertion part 21 and the inner circumferential surface of the receiving cavity 11. The annular groove of the insertion part 21 is an inner annular groove 24, and the annular groove of the receiving cavity 11 is an outer annular groove 12. The inner annular groove 24 and the outer annular groove 12 are correspondingly connected and filled with adhesive. In actual assembly, adhesive is first applied to the inner annular groove 24 and the outer annular groove 12. Then, the insertion part 21 of the insulator 2 is inserted into the receiving cavity 11 of the plug housing 1 until the two annular grooves are aligned. After the adhesive cures, the plug housing 1 and the insulator 2 can be bonded and fixed. Furthermore, the cured adhesive forms an annular key, which can block both the plug housing 1 and the insulator 2 axially, preventing the insulator 2 from detaching from the plug housing 1 axially.

[0048] like Figure 2 and Figure 3 As shown, the insulator 2 also includes an exposed portion 22 connected to the insertion portion 21 and exposed outside the plug housing 1. The outer diameter of the exposed portion 22 is larger than the outer diameter of the insertion portion 21, forming a stepped surface between them. An annular protrusion 13 is provided on the front end face of the plug housing 1 at the front opening of the receiving cavity 11. When assembling the insulator 2, when the stepped surface between the exposed portion 22 and the insertion portion 21 abuts against the annular protrusion 13, the inner annular groove 24 and the outer annular groove 12 are just aligned, thereby providing an installation standard for the insulator 2 and facilitating assembly operations.

[0049] In addition, a key 23 is provided on the exposed part 22, and a groove 14 is provided on the annular protrusion 13 for the key 23 to be inserted. The key 23 and the groove 14 are anti-rotationally engaged in the circumferential direction, which can prevent the insulator 2 and the plug housing 1 from rotating relative to each other, thus ensuring the fixing effect between the insulator 2 and the plug housing 1.

[0050] like Figure 1 As shown, two sets of plug contacts 3 are fixed on the insulator 2, combined with Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the two sets of plug contacts 3 contain a total of four pins: a first pin 31, a second pin 32, a third pin 33, and a fourth pin 34. The first pin 31 and the fourth pin 34 form one set, while the second pin 32 and the third pin 33 form another set. The front end of each pin is a plug-in end, and these plug-in ends are exposed on the front side of the insulator 2. Each pin is inserted into the insulator 2, which is made of fiberglass-free PPS. Each pin has a protrusion 36 on its outer circumference that provides an interference fit with the insulator 2, ensuring a secure connection between the pin and the insulator 2.

[0051] like Figure 3 As shown, the rear end of each pin extends out from the rear side of the insulator 2 and is located in the receiving cavity 11 of the plug housing 1. The shorting plug also includes a resistor located in the receiving cavity 11. In this embodiment, the resistor is a metal film resistor 4. Metal film resistors have high precision and small size, making them particularly suitable for use in space-constrained scenarios. Figure 5 As shown, the metal film resistor 4 includes a resistor body 41 and pins 42 located at both ends of the resistor body 41. One pin 42 of the metal film resistor 4 is soldered to the rear ends of the first pin 31 and the fourth pin 34, while the other pin 42 is soldered to the rear ends of the second pin 32 and the third pin 33. This achieves both short-circuiting between the two pins in each group and connecting the metal film resistor 4 between the two groups of pins, simplifying the internal structure of the connector. Furthermore, the rear end of each pin only needs to be soldered to one pin 42. Compared to some existing technologies where the rear end of a pin requires connecting both a wire and a resistor pin, this invention does not require increasing the size of the pins, thus meeting the requirements for use in confined spaces.

[0052] Furthermore, each pin in each group has a through-pass structure at its rear end for the corresponding pin 42 of the metal film resistor 4 to pass through. Compared to direct soldering of the pin to the end face of the pin, the through-pass structure can limit the pin and enhance the connection between the pin and the pin. Specifically, in this embodiment, the through-pass structure is a U-shaped groove 35 that runs radially through the pin, similar to a tuning fork structure (eliminating the solder cup structure in the prior art). The U-shaped groove 35 has an open opening located on the rear end face of the pin, which facilitates the insertion of the pin 42 and limits the pin 42 on both sides. At the same time, it facilitates the application of solder during soldering and enhances the soldering effect between the pin and the pin 42.

[0053] In this embodiment, since each group includes two pins, the two pins in each group are obviously arranged in a straight line. The leads 42 at both ends of the metal film resistor 4 are both straight, and the two groups of pins are arranged in parallel, which facilitates manufacturing and assembly. During assembly, the lead 42 at one end of the metal film resistor 4 can pass through the U-shaped grooves 35 on the first pin 31 and the fourth pin 34 in sequence, while the lead 42 at the other end of the metal film resistor 4 passes through the U-shaped grooves 35 on the second pin 32 and the third pin 33 in sequence. Alternatively, the leads 42 at both ends of the metal film resistor 4 can be inserted into the U-shaped grooves of each pin from top to bottom, and then soldered at each U-shaped groove.

[0054] Meanwhile, the resistor body 41 and the two end pins 42 are arranged in a U-shape, and the two end pins 42 are perpendicular to the resistor body 41. The two sets of pins are arranged symmetrically about the axis of the insulator 2. This layout is more regular and reasonable. The resistor body 41 is completely aligned with the rear end face of the insulator 2 and does not exceed the edge of the rear end face of the insulator 2. The resistor body 41 is arranged horizontally close to the rear end face of the insulator 2, which does not occupy too much space in the receiving cavity 11. The size of the plug housing 1 can be minimized to meet the requirements of use in a narrow space.

[0055] like Figures 1-3 As shown, the shorting plug also includes an end cap 5 fixed to the rear end of the plug housing 1. The two are fixed together by laser welding, which ensures both sealing and good connection strength. In actual operation, before welding the end cap 5, it is necessary to inject glue into the receiving cavity 11 of the plug housing 1 to ensure the fixation and protection of the metal film resistor 4 and the tail ends of each pin.

[0056] like Figure 6 , Figure 7 and Figure 8As shown, the shorting socket includes a socket housing 6 and four contact parts 7 mounted on the socket housing 6, each corresponding to one of the four pins on the shorting plug. The socket housing 6 is an insulating housing made of fiberglass-free PPS. The socket housing 6 includes an insulating plate 61, and the contact parts 7 are inserted and fixed to the insulating plate 61. Figure 9 As shown, the contact component 7 includes a metal sheath 71 and a socket contact 72 installed inside the metal sheath 71. The front end of the socket contact 72 is a plug end, and the rear end is interference-fitted and fixed to the metal sheath 71. The outer peripheral surface of the metal sheath 71 is provided with barbs 711 that are interference-fitted with the insulating plate 61 to ensure the fixing effect between the contact component 7 and the socket housing 6.

[0057] The front end of the socket contact 72 is provided with at least two axially extending and radially penetrating the side wall of the socket contact 72. In this embodiment, there are four axially extending and radially penetrating the side wall of the socket contact 72. There is a gap between the outer peripheral surface of the front end of the socket contact 72 and the inner wall of the metal sheath 71. When the plug contact is inserted into the socket contact 72, the front end of the socket contact 72 will be stretched open and deformed outward, thereby tightly clamping the plug contact and ensuring the connection effect between the two.

[0058] The metal sleeve 71 enables the socket contact 72 to be mounted on the socket housing 6, and simultaneously provides protection for the socket contact 72. Furthermore, the rear ends of the metal sleeve 71 and the socket contact 72 are flush, and the rear ends extend beyond the rear side of the insulating plate 61. Combined with... Figure 10 and Figure 11 As shown, the rear end of the metal sheath 71 forms a fixed end that directly inserts into the connection hole 81 of the flexible printed circuit board 8 and is soldered to the flexible printed circuit board 8, achieving a 90° bent signal lead-out. Furthermore, the rear ends of the metal sheath 71 and the socket contact 72 do not protrude from the connection hole 81, facilitating soldering. The metal sheath 71 serves multiple purposes in one component, saving space and meeting the requirements for use in confined spaces.

[0059] In addition, combined Figure 7 , Figure 8 and Figure 11 As shown, a U-shaped protective protrusion 62 protrudes from the rear side of the insulating plate 61. The rear end of the contact component 7 is located inside the protective protrusion 62. The space within the protective protrusion 62 forms a receiving space for accommodating the connection end of the flexible printed circuit board 8, thereby protecting the connection end of the flexible printed circuit board 8 and positioning the connection end of the flexible printed circuit board 8, facilitating the connection between the flexible printed circuit board 8 and the shorting socket. The entire socket housing 6 has a flat plate-like structure, and the sum of the heights of the insulating plate 61 and the protective protrusion 62 is only 4.85mm, which is small in size and meets the requirements for use in confined spaces.

[0060] In other embodiments of the connector assembly: the protective protrusion is no longer provided on the rear side of the insulating plate, and the socket housing is made solely of the insulating plate.

[0061] In other embodiments of the connector assembly: the rear end of the contact component no longer extends to the rear side of the insulating plate, that is, the rear end face of the contact component does not protrude from the rear end face of the insulating plate. In this case, screws can be used to pass through the printed circuit board and fix it to the rear end of the contact component, thereby realizing the conductivity between the printed circuit board and the contact component.

[0062] In other embodiments of the connector assembly: the number of slots on the socket contact can be three, or two, and in other embodiments, slots can be omitted, and the socket contact can be a contact with other structural forms, such as a crown spring.

[0063] In other embodiments of the connector assembly, the metal sheath and the insulating housing can also be bonded together, in which case barbs are no longer provided on the outer peripheral surface of the metal sheath.

[0064] In other embodiments of the connector assembly, the plug contact can also be bonded to the insulator, in which case the protrusions are no longer provided on the outer peripheral surface of the plug contact.

[0065] In other embodiments of the connector assembly: a key can be provided on the plug housing, and a groove for inserting the key can be provided on the exposed part of the insulator. The key and the groove are in a circumferential anti-rotation fit. In this case, the key on the plug housing can be provided on the annular protrusion, or the annular protrusion can be omitted and directly provided on the front end face of the plug housing.

[0066] In other embodiments of the connector assembly: when the insulator has a raised key and the plug housing has a groove, the plug housing may not have an annular protrusion and the front end face of the plug housing is flat. In this case, the groove can be set on the inner wall of the receiving cavity, and the raised key on the insulator is inserted into the groove without being exposed.

[0067] In other embodiments of the connector assembly: the outer diameter of the exposed portion of the insulator can be equal to the outer diameter of the insertion portion. In this case, the end face of the insertion portion can be blocked by the stepped surface on the inner wall of the plug housing to limit the installation limit of the insertion portion. Of course, in other embodiments, the insulator may not have an exposed portion, and the insulator may be completely inserted into the plug housing.

[0068] In other embodiments of the connector assembly: the key and groove are no longer required on the insulator and plug housing, and the annular groove is no longer required on the outer peripheral surface of the insertion part and the inner peripheral surface of the receiving cavity. In this case, the insulator and plug housing can be firmly bonded and the insulator will not rotate circumferentially or come out axially by relying solely on the glue injection in the receiving cavity.

[0069] In other embodiments of the connector assembly: the plug contact may be a socket rather than a pin.

[0070] In other embodiments of the connector assembly: the pins at both ends of the resistor may not be perpendicular to the resistor body, that is, the resistor body and the pins at both ends are not arranged in a U-shape, but both pins are straight and parallel. In this case, the angle between one pin and the resistor body is an acute angle, and the angle between the other pin and the resistor body is an obtuse angle. Obviously, the sum of the two angles is 180 degrees. At this time, the arrangement of the two sets of plug contacts relative to the insulator also changes accordingly.

[0071] In other embodiments of the connector assembly: when the plug contacts in each set of plug contacts are arranged in a straight line, the two sets of plug contacts can be arranged at an angle, and the two ends of the resistor are also arranged at the same angle, for example, in a V-shape.

[0072] In other embodiments of the connector assembly: depending on specific needs, each set of plug contacts may also include three or more plug contacts, and the plug contacts in a set are arranged in a straight line, in which case the two ends of the resistor are both flat.

[0073] In other embodiments of the connector assembly: when there are three or more plug contacts in a group, these plug contacts may not be arranged in a straight line, for example, in a triangular wave shape. In this case, the pins are also bent. The resistors can be customized in advance to ensure that the shape of the pins can be connected to each plug contact, or the pins are bent on the field when passing through the rear end of each plug contact.

[0074] In other embodiments of the connector assembly: the through structure at the rear end of the plug contact can also be a perforation, and the cross-sectional shape of the perforation can be circular or polygonal.

[0075] In other embodiments of the connector assembly: the through structure at the rear end of the plug contact can also be a 90-degree right-angle slot structure, which is equivalent to a notch at the rear end of the plug contact with two sidewalls that are perpendicular to each other. To ensure the limiting effect, the notches on the two sets of plug contacts can be arranged opposite each other.

[0076] In other embodiments of the connector assembly: the rear end of the plug contact may not have a through structure, and the pins may be directly soldered to the rear end face of the plug contact.

[0077] In other embodiments of the connector assembly, the metal film resistor can also be replaced with a manganese copper wire resistor, a carbon film resistor, or a wire-wound resistor.

[0078] The embodiment of the shorting plug in this invention is as follows: the specific structure of the shorting plug is the same as that of the shorting plug in any embodiment of the connector assembly described above, and will not be repeated here.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A shorting plug, characterized in that, The device includes a plug housing, an insulator fixed to the plug housing, and a resistor located inside the plug housing with leads at both ends. Two sets of plug contacts are fixed on the insulator and are respectively connected to the leads at both ends of the resistor. Each set of plug contacts includes at least two plug contacts, and the front end of each plug contact is a plug-in end. One lead of the resistor is welded and fixed to the rear end of each plug contact in one set of plug contacts, and the other lead of the resistor is welded and fixed to the rear end of each plug contact in the other set of plug contacts, so that the resistor is connected between the two sets of plug contacts, and short-circuiting is achieved between each plug contact in each set of plug contacts.

2. The shorting plug according to claim 1, characterized in that, Each plug contact in each group has a through-structure at the rear end for the corresponding pin of the resistor to pass through.

3. The shorting plug according to claim 2, characterized in that, It passes through the U-shaped groove, which is a through-hole plug contact.

4. The shorting plug according to any one of claims 1 to 3, characterized in that, Each plug contact in each group is arranged in a straight line, and the leads at both ends of the resistor are straight.

5. The shorting plug according to claim 4, characterized in that, The two sets of plug contacts are arranged in parallel, and the leads at both ends of the resistor are arranged in parallel.

6. The shorting plug according to claim 5, characterized in that, The resistor body and its two leads are arranged in a U-shape.

7. The shorting plug according to any one of claims 1 to 3, characterized in that, The plug housing has a receiving cavity, and the insulator includes a insertion part inserted into the receiving cavity. Annular grooves are respectively provided on the outer peripheral surface of the insertion part and the inner peripheral surface of the receiving cavity. The two annular grooves are connected and filled with adhesive.

8. The shorting plug according to any one of claims 1 to 3, characterized in that, One of the insulator and the plug housing is provided with a key, and the other is provided with a groove for the key to be inserted. The key and the groove are anti-rotationally engaged in the circumferential direction.

9. The shorting plug according to any one of claims 1 to 3, characterized in that, The plug contact is inserted into the insulator, and the outer peripheral surface of the plug contact is provided with protrusions that are interference fit with the insulator.

10. A connector assembly comprising a shorting plug and a shorting receptacle adapted to the shorting plug, the shorting receptacle comprising a receptacle housing and contact components mounted on the receptacle housing, characterized in that, The shorting plug is the shorting plug as described in any one of claims 1 to 9.

11. The connector assembly according to claim 10, characterized in that, The socket housing is an insulating housing, and the contact parts are inserted into the insulating housing. The contact parts include a metal sheath and a socket contact installed inside the metal sheath. The outer circumferential surface of the metal sheath is provided with barbs that are interference-fitted with the insulating housing.

12. The connector assembly according to claim 10, characterized in that, The contact component includes a metal sheath and a socket contact installed inside the metal sheath. The front end of the socket contact is a plug-in end, and the rear end is fixed to the metal sheath. The front end of the socket contact is provided with at least two axially extending and radially penetrating the sidewall of the socket contact. There is a gap between the outer peripheral surface of the front end of the socket contact and the inner wall of the metal sheath.

13. The connector assembly according to claim 10, characterized in that, The socket housing includes an insulating plate, and a contact component is inserted and fixed on the insulating plate. The front end of the contact component is a plug-in end, and the rear end of the contact component extends out from the rear side of the insulating plate and forms a fixed end for direct insertion into and welding to the flexible printed circuit board.

14. The connector assembly according to claim 13, characterized in that, The rear side of the insulating board has a U-shaped protective protrusion. The rear end of the contact component is located inside the protective protrusion. The space inside the protective protrusion forms a receiving space for accommodating the connection end of the flexible printed circuit board.

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