Short-circuit plug and connector assembly

Abstract

The invention 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 pins at the two ends, two groups of plug contact pieces connected with the pins at the two ends of the resistor respectively 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 plugging end, and the rear end of each plug contact piece is a plugging end. And a 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, and a 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. According to the invention, the short circuit between the plug contacts in one group is realized, and the resistor is connected between the two groups of plug contacts, so that the internal structure of the plug is simplified. Moreover, the rear end of each plug contact only needs to be welded with one pin, the size of the plug contact does not need to be increased, and the use requirement of a narrow space can be met.

Description

Technical Field

[0001] The invention relates to a short-circuit plug and a connector assembly, belonging to the technical field of connection devices. Background Art

[0002] Electronic fuses are widely used in blasting operations in the fields of mining, tunnel construction, large infrastructure and urban construction. In order to avoid accidental explosions during the production test of electronic fuses used in blasting operations, it is necessary to use short-circuit plugs for simulation tests to replace real industrial detonators for testing. The short-circuit plug is not loaded with explosives, but indirectly resists at the designated hole position so that the short-circuit plug can repeatedly withstand short-term overload current when reused.

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

[0004] During actual wiring, if pins D1, D2, D5, and D6 are connected to resistors through wires respectively, there will be a large number of wires and the internal wiring of the plug will be complicated. Therefore, one wire is generally used to connect the two pins that need to be short-circuited, so that the pin at one end of the resistor 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 and the connection between the resistor pin and the pin can only be achieved by welding. Usually, a solder cup is set at the tail of the pin. During welding, the wire core at the end of the wire is inserted into the solder cup, and the wire core is connected to the pin by melting the solder. However, since the pin of the resistor needs to be inserted into the same solder cup, the inner diameter of the solder cup is required to be large enough, which in turn leads to a large outer diameter of the pin (i.e., the plug contact) and cannot meet the use requirements of a small space. In addition, the above method requires the use of additional wires to short-circuit the two pins, resulting in a complex internal structure of the plug. Summary of the invention

[0005] The object of the present invention is to provide a short-circuit plug to solve the problem in the prior art that the wire core at the end of the wire and the pin of the resistor are inserted into the solder cup of the same plug contact, resulting in a large plug contact and being unable to meet the requirements of use in a narrow space, and the problem that an additional wire is required between the two short-circuited plug contacts, resulting in a complicated internal structure of the plug; the object of the present invention is also to provide a connector assembly to solve the above problems.

[0006] To achieve the above purpose, the shorting plug in the present invention adopts the following technical solution: A short-circuit plug comprises a plug housing, an insulator fixed on the plug housing, and a resistor located in the plug housing and having pins at both ends. Two groups of plug contacts are fixed on the insulator and are respectively connected to the pins at both ends of the resistor. Each group of plug contacts comprises at least two plug contacts, and the front end of each plug contact is a plug-in end. The pin at one end of the resistor is welded and fixed to the rear end of each plug contact in one group of plug contacts, and the pin at the other end of the resistor is welded and fixed to the rear end of each plug contact in another group of plug contacts.

[0007] The beneficial effect of the above technical solution is that: the present invention belongs to the invention of element change, mainly omitting the wire between the plug contacts that need to be short-circuited, so that the pin at one end of the resistor is welded and fixed to the rear end of each plug contact in one group of plug contacts, and the pin at the other end of the resistor is welded and fixed to the rear end of each plug contact in another group of plug contacts, so that the short circuit between each plug contact in each group of plug contacts is realized, and the resistor is connected between two groups of plug contacts, and the internal structure of the plug is simplified. In addition, the rear end of each plug contact only needs to be welded to one pin. Compared with the prior art that the rear end of the plug contact needs to connect two components, the wire and the resistor pin, the present invention does not need to increase the size of the plug contact, and can meet the use requirements of a small space.

[0008] Furthermore, a rear end of each plug contact in each group of plug contacts is provided with a passing structure for a corresponding pin of the resistor to pass through.

[0009] Further, the penetrating structure is a U-shaped groove that passes through the plug contact.

[0010] Furthermore, each plug contact in each group of plug contacts is arranged in a straight line, and the pins at both ends of the resistor are straight.

[0011] Furthermore, the two groups of plug contacts are arranged in parallel, and the pins at both ends of the resistor are arranged in parallel.

[0012] Furthermore, the resistor body and the pins at both ends of the resistor are arranged in a U shape.

[0013] Furthermore, the plug housing has an accommodating cavity, the insulator includes an inserting portion inserted in the accommodating cavity, annular grooves are respectively provided on the outer circumferential surface of the inserting portion and the inner circumferential surface of the accommodating cavity, and the two annular grooves are correspondingly connected and filled with adhesive.

[0014] Furthermore, one of the insulator and the plug housing is provided with a convex key, and the other is provided with a groove for inserting the convex key, and the convex key and the groove are non-rotatably matched in the circumferential direction.

[0015] Furthermore, the plug contact is inserted into the insulator, and a convex thorn which is interference-fitted with the insulator is provided on the outer peripheral surface of the plug contact.

[0016] To achieve the above purpose, the connector assembly in the present invention adopts the following technical solution: A connector assembly includes a shorting plug and a shorting socket adapted to the shorting plug, the shorting socket includes a socket housing and a contact component mounted on the socket housing, the shorting plug includes a plug housing, an insulator fixed on the plug housing, and a resistor located in the plug housing and having pins at both ends, two groups of plug contacts respectively connected to the pins at both ends of the resistor are fixed on the insulator, each group of plug contacts includes at least two plug contacts, the front end of each plug contact is a plug-in end, the pin at one end of the resistor is welded and fixed to the rear end of each plug contact in one group of plug contacts, and the pin at the other end of the resistor is welded and fixed to the rear end of each plug contact in another group of plug contacts.

[0017] The beneficial effect of the above technical solution is that: the present invention belongs to an improved invention creation, further defines the specific structure of the short-circuit plug, and compared with the prior art, the short-circuit plug omits the wire between the plug contacts to be short-circuited, so that the pin at one end of the resistor is welded and fixed to the rear end of each plug contact in one group of plug contacts, and the pin at the other end of the resistor is welded and fixed to the rear end of each plug contact in another group of plug contacts, so that the short-circuit between each plug contact in each group of plug contacts is realized, and at the same time, the resistor is connected between two groups of plug contacts, and the internal structure of the plug is simplified. In addition, the rear end of each plug contact only needs to be welded to one pin, and compared with the prior art that the rear end of the plug contact needs to connect two components, namely, the wire and the resistor pin, the present invention does not need to increase the size of the plug contact, and can meet the use requirements of a narrow space.

[0018] Furthermore, a rear end of each plug contact in each group of plug contacts is provided with a passing structure for a corresponding pin of the resistor to pass through.

[0019] Further, the penetrating structure is a U-shaped groove that passes through the plug contact.

[0020] Furthermore, each plug contact in each group of plug contacts is arranged in a straight line, and the pins at both ends of the resistor are straight.

[0021] Furthermore, the two groups of plug contacts are arranged in parallel, and the pins at both ends of the resistor are arranged in parallel.

[0022] Furthermore, the resistor body and the pins at both ends of the resistor are arranged in a U shape.

[0023] Furthermore, the plug housing has an accommodating cavity, the insulator includes an inserting portion inserted in the accommodating cavity, annular grooves are respectively provided on the outer circumferential surface of the inserting portion and the inner circumferential surface of the accommodating cavity, and the two annular grooves are correspondingly connected and filled with adhesive.

[0024] Furthermore, one of the insulator and the plug housing is provided with a convex key, and the other is provided with a groove for inserting the convex key, and the convex key and the groove are non-rotatably matched in the circumferential direction.

[0025] Furthermore, the plug contact is inserted into the insulator, and a convex thorn which is interference-fitted with the insulator is provided on the outer peripheral surface of the plug contact.

[0026] Furthermore, the socket housing is an insulating housing, the contact component is inserted into the insulating housing, the contact component includes a metal sheath and a socket contact installed in the metal sheath, and the outer peripheral surface of the metal sheath is provided with barbs that are interference fit with the insulating housing.

[0027] Furthermore, the contact component includes a metal sheath and a socket contact installed in 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 split grooves extending axially and radially penetrating the side wall of the socket contact, and there is a gap between the front end outer peripheral surface of the socket contact and the inner wall of the metal sheath.

[0028] Furthermore, the socket housing includes an insulating plate, the 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 of the rear side of the insulating plate and constitutes a fixed end for directly penetrating the flexible printed board and being welded and fixed to the flexible printed board.

[0029] Furthermore, a U-shaped protective protrusion is protruding from the rear side of the insulating plate, the rear end of the contact component is located inside the protective protrusion, and the space inside the protective protrusion constitutes an accommodating space for accommodating the connection end of the flexible printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional diagram of a shorting plug in the first embodiment of the connector assembly of the present invention from one viewing angle; Figure 2 A three-dimensional diagram of the shorting plug in the connector assembly embodiment 1 of the present invention from another perspective; Figure 3 It is a cross-sectional view of the shorting plug in the embodiment 1 of the connector assembly of the present invention; Figure 4 It is a cross-sectional view of an insulator and a plug contact of a shorting plug in Embodiment 1 of the connector assembly of the present invention; Figure 5 It is a three-dimensional diagram of the insulator, the plug contact and the metal film resistor of the shorting plug in the embodiment 1 of the connector assembly of the present invention; Figure 6 A three-dimensional diagram of a short-circuit socket in Embodiment 1 of the connector assembly of the present invention from one viewing angle; Figure 7 A three-dimensional diagram of the short-circuit socket in the connector assembly embodiment 1 of the present invention from another perspective; Figure 8 It is a cross-sectional view of the short-circuit socket in the embodiment 1 of the connector assembly of the present invention; Fig. 9 It is a cross-sectional view of a contact component of a short-circuit socket in Embodiment 1 of the connector assembly of the present invention; Fig.10 A three-dimensional diagram of a flexible printed circuit board connected to the short-circuit socket in the first embodiment of the connector assembly of the present invention; Fig.11 This is an assembly diagram of the short-circuit socket and the flexible printed circuit board in the first embodiment of the connector assembly of the present invention.

[0031] In the figure: 1. plug housing; 11. accommodating cavity; 12. outer annular groove; 13. annular protrusion; 14. groove; 2. insulator; 21. insertion part; 22. exposed part; 23. convex 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. convex thorn; 4. metal film resistor; 41. resistor body; 42. pin; 5. end cover; 6. socket housing; 61. insulating plate; 62. protective protrusion; 7. contact part; 71. metal sheath; 711. barb; 72. socket contact; 721. split groove; 8. flexible printed circuit board; 81. connecting hole. DETAILED DESCRIPTION

[0032] In view of the technical problems existing in the prior art, the basic concept of the present invention is to eliminate the wires between the plug contacts that need to be short-circuited, and use the pins of the resistor to be directly welded and fixed to the rear ends of each plug contact in each group of plug contacts, so as to achieve short-circuiting between each plug contact in each group of plug contacts and connect the resistor between the two groups of plug contacts, simplify the internal structure of the plug, and do not need to make the plug contacts too large, so as to meet the use requirements of small spaces.

[0033] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0034] Embodiment 1 of the connector assembly of the present invention: The connector assembly includes a shorting plug and a shorting socket adapted to the shorting plug. The structure of the shorting plug is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the short-circuit plug includes a plug housing 1, and an insulator 2 is fixed on the plug housing 1. The specific fixing method is that the plug housing 1 has a housing cavity 11, and the insulator 2 includes an insertion portion 21 inserted in the housing cavity 11. An annular groove is respectively provided on the outer circumference of the insertion portion 21 and the inner circumference of the housing cavity 11. The annular groove of the insertion portion 21 is an inner annular groove 24, and the annular groove of the housing 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 respectively, and then the insertion portion 21 of the insulator 2 is inserted into the housing cavity 11 of the plug housing 1 until the two annular grooves are aligned. After the adhesive is cured, the plug housing 1 and the insulator 2 can be bonded and fixed. In addition, the cured adhesive forms an annular key, which can block the plug housing 1 and the insulator 2 in the axial direction, thereby preventing the insulator 2 from escaping from the plug housing 1 along the axial direction.

[0035] 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, and a step surface is formed between the two. An annular protrusion 13 is convexly provided on the front end surface of the plug housing 1 at the front end opening of the accommodating cavity 11. When the insulator 2 is assembled, when the step surface between the exposed portion 22 and the insertion portion 21 abuts against the annular protrusion 13, the inner annular groove 24 is just aligned with the outer annular groove 12, thereby providing an installation standard for the insulator 2 and facilitating the assembly operation.

[0036] In addition, a key 23 is provided on the exposed portion 22, and a groove 14 for inserting the key 23 is provided on the annular protrusion 13. The key 23 and the groove 14 are matched in a circumferential direction to prevent the insulator 2 and the plug housing 1 from rotating relative to each other, thereby ensuring the fixing effect between the insulator 2 and the plug housing 1.

[0037] like Figure 1 As shown, two groups of plug contacts 3 are fixed on the insulator 2, combined with Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the two groups of plug contacts 3 include four pins in total, namely the first pin 31, the second pin 32, the third pin 33, and the fourth pin 34, wherein the first pin 31 and the fourth pin 34 form one group of pins, and the second pin 32 and the third pin 33 form another group of pins, and the front end of each pin is a plug-in end, and the plug-in ends are exposed on the front side of the insulator 2. Each pin is inserted into the insulator 2, and the material of the insulator 2 is glass-free PPS. The outer peripheral surface of each pin is provided with a convex thorn 36 that is interference-fitted with the insulator 2, which ensures the fixing effect between the pin and the insulator 2.

[0038] like Figure 3 As shown, the rear end of each pin extends out of the rear side of the insulator 2 and is located in the accommodating cavity 11 of the plug housing 1. The shorting plug also includes a resistor located in the accommodating cavity 11. The resistor in this embodiment is a metal film resistor 4. The metal film resistor has high precision and small size, and is particularly suitable for use in scenarios with limited space. 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. The pin 42 at one end of the metal film resistor 4 is welded and fixed to the rear ends of the first pin 31 and the fourth pin 34, and the pin 42 at the other end of the metal film resistor 4 is welded and fixed to the rear ends of the second pin 32 and the third pin 33. In this way, the short circuit between the two pins in each group is realized, and the metal film resistor 4 is connected between the two groups of pins, and the internal structure of the plug is simplified. In addition, the rear end of each pin only needs to be welded to one pin 42. Compared with the prior art that the rear end of the pin needs to connect two components, the wire and the resistor pin, the present invention does not need to increase the size of the pin, and can meet the use requirements of a small space.

[0039] Furthermore, the rear end of each pin in each group is provided with a through structure for the corresponding pin 42 of the metal film resistor 4 to pass through. Compared with the pin being directly welded to the end face of the pin, the through structure can limit the pin and enhance the connection effect between the pins. Specifically in this embodiment, the through structure is a U-shaped groove 35 that penetrates the pin in the radial direction, similar to a tuning fork structure (the solder cup structure in the prior art is eliminated). The U-shaped groove 35 has an open notch, which is located on the rear end face of the pin, which can facilitate the insertion of the pin 42 and can form two-side limits for the pin 42. At the same time, it can facilitate the laying of solder during welding and enhance the welding effect between the pin and the pin 42.

[0040] In this embodiment, since each group includes two pins, it is obvious that the two pins in each group are arranged in a straight line, the pins 42 at both ends of the metal film resistor 4 are straight, and the two groups of pins are arranged in parallel, and the pins 42 at both ends of the metal film resistor 4 are arranged in parallel, which is convenient for manufacturing and assembly. During assembly, the pins 42 at one end of the metal film resistor 4 can be passed through the U-shaped grooves 35 on the first pin 31 and the fourth pin 34 in sequence, and the pins 42 at the other end of the metal film resistor 4 can be passed through the U-shaped grooves 35 on the second pin 32 and the third pin 33 in sequence. Of course, the pins 42 at both ends of the metal film resistor 4 can also be embedded in the U-shaped grooves of each pin from top to bottom at the same time, and then tinning and welding can be performed at each U-shaped groove.

[0041] At the same time, the resistor body 41 and the pins 42 at both ends are arranged in a U shape, the pins 42 at both ends are perpendicular to the resistor body 41, and the two groups of pins are arranged symmetrically about the axis of the insulator 2. This layout is more regular and reasonable. The resistor body 41 completely corresponds to the rear end surface of the insulator 2 and does not exceed the edge of the rear end surface of the insulator 2. The resistor body 41 is arranged horizontally close to the rear end surface of the insulator 2 and does not occupy too much space in the accommodating cavity 11. The size of the plug housing 1 can be as small as possible to meet the use requirements of a small space.

[0042] like Figure 1~Figure 3 As shown, the short-circuit plug also includes an end cap 5 fixed to the rear end of the plug housing 1, and the two are fixed by laser welding, which can ensure both sealing and good connection strength. In actual operation, before welding the end cap 5, it is necessary to inject glue into the accommodating cavity 11 of the plug housing 1 to ensure the fixing and protection effect of the metal film resistor 4 and the tail ends of each pin.

[0043] like Figure 6 , Figure 7 and Figure 8 As shown, the shorting socket includes a socket housing 6 and a contact component 7 mounted on the socket housing 6. There are four contact components 7, which correspond to the four pins on the shorting plug. The socket housing 6 is an insulating housing made of glass-free PPS. The socket housing 6 includes an insulating plate 61, and the contact component 7 is inserted and fixed on the insulating plate 61. Fig. 9 As shown, the contact component 7 includes a metal sheath 71 and a socket contact 72 installed in the metal sheath 71. The front end of the socket contact 72 is a plug-in end, and the rear end is fixed to the metal sheath 71 by interference fit. The outer peripheral surface of the metal sheath 71 is provided with barbs 711 that are interference fit with the insulating plate 61 to ensure the fixing effect between the contact component 7 and the socket housing 6.

[0044] The front end of the socket contact 72 is provided with at least two split grooves 721 extending axially and radially penetrating the side wall of the socket contact 72. In this embodiment, there are four split grooves 721, and there is a gap between the front end outer peripheral surface of the socket contact 72 and the inner wall of the metal sheath 71. In this way, when the plug contact is inserted into the socket contact 72, the front end of the socket contact 72 will be stretched and deformed outward, thereby tightly clamping the plug contact, ensuring the connection effect between the two.

[0045] The metal sheath 71 enables the socket contact 72 to be installed on the socket housing 6. At the same time, the metal sheath 71 can protect the socket contact 72. In addition, the rear ends of the metal sheath 71 and the socket contact 72 are flush, and the rear ends extend out of the rear side of the insulating plate 61. Fig.10 and Fig.11 As shown, the rear end of the metal sheath 71 constitutes a fixed end that directly penetrates into the connection hole 81 of the flexible printed circuit board 8 and is welded and fixed to the flexible printed circuit board 8, realizing the 90° bend form of signal extraction. In addition, the rear ends of the metal sheath 71 and the jack contact 72 do not penetrate the connection hole 81, which is convenient for tinning. The metal sheath 71 has multiple uses as a part, saves space, and can meet the requirements of using a small space.

[0046] In addition, combined Figure 7 , Figure 8 and Fig.11 As shown, a U-shaped protective protrusion 62 is convexly provided on the rear side of the insulating plate 61, and the rear end of the contact component 7 is located inside the protective protrusion 62. The space inside the protective protrusion 62 constitutes an accommodating space for accommodating the connection end of the flexible printed board 8, so that the connection end of the flexible printed board 8 can be protected and the connection end of the flexible printed board 8 can be positioned to facilitate the connection between the flexible printed board 8 and the short-circuit socket. The entire socket housing 6 is a flat plate-like structure, and the sum of the heights of the insulating plate 61 and the protective protrusion 62 is only 4.85 mm, which is small in size and meets the requirements for use in a narrow space.

[0047] In other embodiments of the connector assembly: no protective protrusion is provided on the rear side of the insulating plate, and the socket housing is only composed of the insulating plate.

[0048] 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 surface of the contact component does not protrude from the rear end surface of the insulating plate. At this time, a screw can be used to pass through the printed circuit board and fixedly connected to the rear end of the contact component, thereby achieving conduction between the printed circuit board and the contact component.

[0049] In other embodiments of the connector assembly: the number of split grooves on the jack contact may be three, or two, and in other embodiments, the split grooves may not be provided, and the jack contact may be a contact of other structural forms, such as a crown spring.

[0050] In other embodiments of the connector assembly: the metal sheath and the insulating shell may also be bonded and fixed, and in this case, barbs are no longer provided on the outer circumference of the metal sheath.

[0051] In other embodiments of the connector assembly: the plug contact and the insulator may also be bonded and fixed, and in this case, no burrs are provided on the outer peripheral surface of the plug contact.

[0052] In other embodiments of the connector assembly: a convex key can also be provided on the plug housing, and a groove for inserting the convex key can be provided on the exposed portion of the insulator. Similarly, the convex key and the groove are fitted in a circumferential direction to prevent rotation. At this time, the convex key on the plug housing can be provided on the annular protrusion, or the annular protrusion can be omitted and the convex key can be directly provided on the front end face of the plug housing.

[0053] In other embodiments of the connector assembly: when a convex key is provided on the insulator and a groove is provided on the plug housing, there may be no annular protrusion on the plug housing, and the front end surface of the plug housing is flat. In this case, the groove can be provided on the inner wall of the accommodating cavity, and the convex key on the insulator is inserted into the groove, and the convex key is not exposed.

[0054] 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 inserted portion. At this time, the end face of the inserted portion can be stopped by the step surface on the inner wall of the plug housing to limit the installation limit of the inserted portion. Of course, in other embodiments, the insulator can also have no exposed portion, and the insulator can be completely inserted into the plug housing.

[0055] In other embodiments of the connector assembly: the insulator and the plug housing may no longer be provided with keys and grooves, and the outer circumferential surface of the insertion portion and the inner circumferential surface of the accommodating cavity may no longer be provided with annular grooves. In this case, only the glue injected into the accommodating cavity can be relied upon to ensure that the insulator and the plug housing are firmly bonded and that the insulator does not rotate circumferentially or fall out axially.

[0056] In other embodiments of the connector assembly, the plug contact may not be a pin but a socket.

[0057] 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 the two pins are straight and parallel. At this time, the angle between one of the pins 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.

[0058] In other embodiments of the connector assembly: when the plug contacts in each group of plug contacts are arranged in a straight line, the two groups of plug contacts can be arranged at an angle, and the two end pins of the resistor are also arranged at the same angle, such as a V-shaped arrangement.

[0059] In other embodiments of the connector assembly: according to specific needs, each group of plug contacts may also include three or more plug contacts, and the plug contacts in a group are arranged in a straight line, and at this time, the pins at both ends of the resistor are straight.

[0060] In other embodiments of the connector assembly: when the number of plug contacts in a group is more than three, these plug contacts may not be arranged in a straight line, for example, they may be arranged in the shape of a triangular wave. In this case, the pins are also bent, and the resistors may 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 site when passing through the rear end of each plug contact.

[0061] In other embodiments of the connector assembly: the through structure at the rear end of the plug contact may also be a through hole, and the cross-sectional shape of the through hole may be circular or polygonal.

[0062] 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 groove structure, which is equivalent to a notch at the rear end of the plug contact, and the notch has two side walls, and the two side walls are vertical. To ensure the limiting effect, the notches on the two groups of plug contacts can be arranged relative to each other.

[0063] In other embodiments of the connector assembly: the rear end of the plug contact may not be provided with a through structure, and the pin is directly welded and fixed to the rear end surface of the plug contact.

[0064] In other embodiments of the connector assembly: the metal film resistor may also be replaced by a manganese copper wire resistor, a carbon film resistor or a wire wound resistor.

[0065] The embodiment of the shorting plug in the present invention is as follows: The specific structure of the shorting plug is the same as the shorting plug in any embodiment of the above connector assembly, and will not be repeated here.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A shorting plug, characterized in that: The invention comprises a plug housing, an insulator fixed on the plug housing, and a resistor located in the plug housing and having pins at both ends. Two groups of plug contacts respectively connected to the pins at both ends of the resistor are fixed on the insulator. Each group of plug contacts comprises at least two plug contacts. The front end of each plug contact is a plug-in end. The pins at one end of the resistor are welded and fixed to the rear ends of each plug contact in one group of plug contacts, and the pins at the other end of the resistor are welded and fixed to the rear ends of each plug contact in another group of plug contacts.

2. The shorting plug according to claim 1, characterized in that: The rear end of each plug contact in each group of plug contacts is provided with a through structure for the corresponding pin of the resistor to pass through.

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

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

5. The shorting plug according to claim 4, characterized in that: The two groups of plug contacts are arranged in parallel, and the pins 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 the pins at both ends of the resistor 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 an accommodating cavity, the insulator includes an inserting part inserted in the accommodating cavity, annular grooves are respectively arranged on the outer circumference of the inserting part and the inner circumference of the accommodating cavity, and the two annular grooves are correspondingly 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 convex key, and the other is provided with a groove for inserting the convex key, and the convex key and the groove are rotationally fixedly matched 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 convex thorns which are interference-fitted with the insulator.

10. A connector assembly, comprising a shorting plug and a shorting socket adapted to the shorting plug, wherein the shorting socket comprises a socket housing and a contact component mounted on the socket housing, characterized in that: The shorting plug is the shorting plug according to 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 component is inserted into the insulating housing. The contact component includes a metal sheath and a socket contact installed in the metal sheath. The outer peripheral 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 in 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 split grooves extending axially and radially penetrating the side wall of the socket contact. There is a gap between the front end outer peripheral surface of the socket contact and the inner wall of the metal sheath.

13. The connector assembly according to claim 10, wherein: The socket housing includes an insulating plate, on which a contact component is inserted and fixed. The front end of the contact component is a plug-in end, and the rear end of the contact component extends out of the rear side of the insulating plate and constitutes a fixed end for directly penetrating the flexible printed circuit board and being welded and fixed to the flexible printed circuit board.

14. The connector assembly according to claim 13, characterized in that A U-shaped protective protrusion is convexly arranged on the rear side of the insulating plate, the rear end of the contact component is located inside the protective protrusion, and the space inside the protective protrusion constitutes an accommodating space for accommodating the connection end of the flexible printed circuit board.

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