Sheet type contact member and high-voltage interlock shorting structure

Abstract

The present invention provides a novel sheet type contact member and a high-voltage interlock shorting structure. By means of a pressure bearing part which is laterally pressed by an abutment structure of an adapter connector to cause an elastic suspension section to move towards an elastic suspension section of the other opposing contact member, a shorting portion is driven to be in contact with a shorting portion on the other opposing contact member, thereby simplifying the structure of parts, reducing the use cost of the parts, and standardizing and simplifying a signal contact member. Compared with existing contact members, the contact members of the present invention have a simple structure, and can realize loop shorting by one-step mating after being assembled. The high-voltage interlock shorting structure can form a signal loop without mating with a sheet type shorting pin, thereby reducing the use of sheet type shorting pins, improving the assembly efficiency, and reducing the overall cost of a signal component while reducing the cost of parts.

Description

Chip contact and high-voltage interlocking short circuit structure TECHNICAL FIELD

[0001] The present application relates to a contact of an electrical connector, in particular to a chip contact and a high-voltage interlocking short circuit structure. BACKGROUND

[0002] In the electrical connector industry, the contact has always been the most important part of the connector, which is directly related to the reliability of the connection performance of the connector. In the high-voltage interlocking short circuit structure of the existing high-voltage interlocking connection assembly, a signal contact of a jack structure is mostly used. The number of parts of this signal contact is basically two or more. Specifically, as shown in FIGS. 1-4, the existing signal contact usually includes a signal jack 1 and an outer sheath 2. The rear end of the signal jack 1 is a wiring end, and the front end is a plug-in end formed by oppositely arranging a set of cantilever springs 101 to allow an adapter conductor to be inserted. When the contact is assembled, the plug-in end of the signal jack 1 is inserted into the outer sheath 2, and the front end of the outer sheath 2 forms a plug-in opening for the insertion of a chip short circuit pin 3, which is inserted into two signal contacts at the same time, thereby short-circuiting the two signal contacts to form a signal short circuit loop. The existing signal contact uses a large number of parts during assembly, and the structure of each part is relatively complex, which leads to a complicated process of machining and assembly and a high overall cost of the product. SUMMARY

[0003] The purpose of the present application is to provide a chip contact to solve the problems of the existing high-voltage interlocking short circuit structure, such as a large number of parts, a complex part structure, and a complicated machining process, thereby reducing the use cost of the parts and the complexity of part machining. Meanwhile, the present application also provides a high-voltage interlocking short circuit structure containing the chip contact of the present application, which solves the problem of a large number of parts required during assembly of the existing high-voltage interlocking short circuit structure and a complicated assembly process, omits the chip short circuit pin used when the existing signal short circuit loop is connected, improves the overall assembly efficiency, and reduces the cost.

[0004] To achieve the above-mentioned purpose, the present application provides a chip contact, which is used in pairs and oppositely arranged in pairs, including a chip body, the chip body including a wiring end, an assembly structure for fixed assembly with a first insulating shell, and a short circuit structure, the short circuit structure including an elastic overhanging section, the elastic overhanging section having a pressure receiving portion for being laterally extruded by a pressure receiving structure of an adapter connector to move the elastic overhanging section toward the elastic overhanging section of the other chip contact, and a short circuit portion on the elastic overhanging section for contacting the short circuit portion on the other chip contact when the elastic overhanging section is extruded.

[0005] Further, the short circuit portion is a contact spring arm formed by blanking on the elastic overhanging section.

[0006] Further, the contact spring arm extends inwardly from the back of the terminal end.

[0007] Further, the end of the elastic overhanging section away from the terminal end has a bent section which is bent inwardly and bulges outwardly, the compressed part is the outer side of the bent section, and the outer side of the bent section is a smooth guide surface.

[0008] Further, inwardly bent sections are arranged at both ends of the contact spring arm in the width direction of the corresponding position on the elastic overhanging section.

[0009] Further, the assembly structure is arranged at a position between the terminal end and the short-circuit structure of the sheet body, and includes inwardly bent wings of the two side edges of the sheet body in the width direction, the bent wings are used to cooperate with the plug-in sliding groove in the first insulating shell, and further includes a limiting structure arranged between the two bent wings.

[0010] Further, the limiting structure is a buckle structure which protrudes outwardly.

[0011] Further, the buckle structure is a spring piece which is punched outwardly and extends towards the terminal end.

[0012] Further, the elastic overhanging section has a transition section between the root and the short-circuit part, and the transition section is provided with a hollow structure.

[0013] The present application provides a brand-new sheet contact, which is used in pairs and arranged oppositely, and the compressed part of the elastic overhanging section of the sheet contact is moved towards the elastic overhanging section of the opposite contact by the lateral extrusion of the pressing structure of the adapter, so as to drive the short-circuit part to contact the short-circuit part on the opposite contact, thereby realizing the short-circuit of two signal paths. This scheme simplifies the structure of the parts, reduces the use cost of the parts, and standardizes and simplifies the signal contact. Compared with the original contact, the contact of the present application has a simple structure, and after assembly, one-step plug-in can realize loop short-circuit.

[0014] The high-voltage interlocking short-circuit structure of the application comprises a first insulating shell having a front-to-rear extending mounting inner cavity, a pair of contact pieces are mounted in the mounting inner cavity, the contact pieces are used in pairs and oppositely arranged, comprising a sheet body, the sheet body comprises a terminal, an assembly structure for fixed assembly with the first insulating shell, and a short-circuit structure, the short-circuit structure comprises an elastic overhanging section, the elastic overhanging section has a pressure receiving part for being laterally extruded by the pressing structure of the adapter connector to make the elastic overhanging section move towards the opposite contact piece, the elastic overhanging section has a short-circuit part for contacting the short-circuit part on the opposite contact piece when the elastic overhanging section is pressed, and the first insulating shell is provided with a relief hollow at a position corresponding to the pressure receiving part of the contact piece for exposing the pressure receiving part to be pressed by the pressing structure of the adapter connector when the adapter connector is inserted.

[0015] Further, the short-circuit part is a contact spring arm formed on the elastic overhanging section by blanking.

[0016] Further, the contact spring arm extends inwardly away from the terminal.

[0017] Further, the end of the elastic overhanging section away from the terminal has a bent section bent inwardly and bulged outwardly, the pressure receiving part is the outer side of the bent section, and the outer side of the bent section is a smooth guide surface.

[0018] Further, inwardly bent portions are provided at both ends of the contact spring arm in the width direction of the elastic overhanging section.

[0019] Further, the assembly structure is provided at a position between the terminal and the short-circuit structure of the sheet body, comprising inwardly bent wings of both side edges of the sheet body in the width direction for cooperating with the insertion sliding grooves in the first insulating shell, and further comprising a limiting structure provided between the two bent wings.

[0020] Further, the limiting structure is a buckle structure protruding outwardly.

[0021] Further, the buckle structure is a spring sheet outwardly blanked and extending towards the terminal.

[0022] Further, the elastic overhanging section has a transition section between the root and the short-circuit part, and the transition section is provided with a hollow structure.

[0023] Further, the inner wall of the mounting inner cavity is provided with front-to-rear extending insertion sliding grooves cooperating with the bent wings on the sheet contact piece.

[0024] Further, opposite sides of the inner wall of the mounting inner cavity are provided with limiting grooves cooperating with the buckle structure.

[0025] The application provides a high-voltage interlocking short-circuit structure, which solves the problem of too many parts in the original short-circuit structure during assembly, and the avoiding hollow is arranged on the first insulating shell to expose the pressure receiving part, so that the pressure receiving part is pressed by the pressing structure of the adapter connector when the adapter connector is inserted, the short-circuit part is contacted by extruding the outer side of the oppositely arranged sheet contact through the pressing structure, and the high-voltage interlocking short-circuit is ensured. Compared with the original short-circuit structure, the signal contact structure of the high-voltage interlocking short-circuit structure is simple, convenient to manufacture and low in cost, the signal loop can be formed without cooperating with the sheet short-circuit pin, the use of the sheet short-circuit pin is reduced, the assembly efficiency is improved, the part cost is reduced, and the overall cost of the signal part is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a signal jack of a contact; Figure 2 is a structural schematic diagram of an outer sheath of the contact; Figure 3 is a structural schematic diagram of the signal jack and the outer sheath of the contact after assembly; Figure 4 is a structural schematic diagram of the contact which needs to be matched with a sheet short-circuit pin during use; Figure 5 is a structural schematic diagram of an embodiment of a sheet contact of the application; Figure 6 is a structural schematic diagram of a pair of sheet contacts as shown in Figure 5 in a state that the pressure receiving part is not extruded; Figure 7 is a structural schematic diagram of a pair of sheet contacts as shown in Figure 5 in a state that the pressure receiving part is extruded; Figure 8 is a structural schematic diagram of another embodiment of a sheet contact of the application; Figure 9 is a structural schematic diagram of a pair of sheet contacts as shown in Figure 8 in a state that the pressure receiving part is not extruded; Figure 10 is a structural schematic diagram of a pair of sheet contacts as shown in Figure 8 in a state that the pressure receiving part is not extruded; in the drawings: 1, signal jack; 101, cantilever spring; 2, outer sheath; 3, sheet short-circuit pin; 4, sheet contact; 41, root; 5, pressure receiving part; 6, contact spring arm; 7, transition section; 8, bent wing; 9, buckle structure; 10, wiring end; 11, pressing structure; 12, limiting groove; 13, plug-in sliding groove; 14, avoiding hollow; 15, first insulating shell; 16, second insulating shell; 17, inner drum protrusion. DETAILED DESCRIPTION

[0027] The features and performances of the application are further described in detail in combination with the embodiments.

[0028] The application provides a high-voltage interlocking short-circuit structure, which comprises a pair of blade contacts used in pairs, and through optimization of the part structure of the blade contact, the assembly efficiency is improved, the part processing difficulty is reduced, and the part processing cost and the overall cost of the signal module are reduced without affecting the transmission effect after the signal loop is short-circuited. Specifically, the elastic overhanging sections of the oppositely arranged blade contacts are moved towards the elastic overhanging sections of the other contact by being laterally extruded by the abutting structure on the adapter connector, so as to drive the short-circuit parts to contact the short-circuit parts on the other contact, thereby simplifying the structure of the parts, reducing the processing difficulty of the parts, and standardizing and simplifying the signal contact.

[0029] The high-voltage interlocking short-circuit structure of the application comprises a first insulating shell, which is a tubular structure with one end open and the other end provided with a plug-in end with a relief hollow for cooperating with a second insulating shell on the adapter connector. The relief hollow is arranged at the plug-in end corresponding to the pressure receiving part of the contact for exposing the pressure receiving part. The first insulating shell has a front-rear extending mounting inner cavity, and the mounting inner cavity is provided with a pair of contacts. In use, the high-voltage interlocking short-circuit structure of the application can be installed in any one of the plug or the socket, and the abutting structure is arranged on the other one. In one embodiment, the high-voltage interlocking short-circuit structure of the application is installed in the plug, and correspondingly, the abutting structure is arranged in the socket adapted to the plug. The following content is based on this embodiment. The socket adapted to the plug comprises a second insulating shell, and the second insulating shell is provided with a cooperating structure capable of accommodating the relief hollow on the first insulating shell when the plug and the socket are plugged in. The second insulating shell is provided with a hole extending in the axial direction away from the plug-in end at the plug-in end, and a smooth chamfer is arranged at the hole opening of the plug-in end as the abutting structure. When the cooperating structure completely covers the relief hollow, the pressure receiving part of the pair of blade contacts in the plug is pressed by the abutting structure of the adapter socket. The mounting inner cavity is also provided with a cooperating structure for cooperating with the assembly structure on the blade contact. When the pressure receiving part on the blade contact is pressed by the side of the abutting structure to drive the short-circuit part to contact, a short-circuit loop is formed. Compared with the original short-circuit structure, the high-voltage interlocking short-circuit structure of the application can form a signal loop without the cooperation of the blade short-circuit pin, reduces the use of the blade short-circuit pin, improves the assembly efficiency, reduces the part cost, and also reduces the overall cost of the signal part.

[0030] Based on the above main idea, the following embodiments are provided for illustration.

[0031] As shown in FIGS. 5-10, the contact pieces 4 in the first insulating shell 15 in the embodiment are used in pairs and arranged oppositely in pairs. The contact pieces 4 include the terminal ends 10, the assembly structure for fixed assembly with the first insulating shell 15, and the shorting structure including the elastic overhang section with the pressure receiving part 5 for lateral extrusion by the abutting structure 11 of the mating socket to move the elastic overhang section toward the elastic overhang section of the opposite contact piece, and the shorting part for contacting the shorting part on the opposite contact piece when the elastic overhang section is pressed. The transition section 7 is arranged between the assembly structure and the shorting structure. In use, the pairs of contact pieces 4 are arranged oppositely in the installation inner cavity of the first insulating shell 15. When the assembled plug is inserted into the mating socket, the avoidance hollow 14 on the first insulating shell 15 corresponding to the pressure receiving part of the contact piece is arranged to expose the pressure receiving part, so that the pressure receiving part is pressed by the abutting structure 11 of the mating socket when the mating socket is inserted. When the abutting structure 11 on the second insulating shell 16 on the mating socket extrudes the pressure receiving parts 5 of the contact pieces on both sides, the pressure receiving parts 5 are extruded to drive the shorting parts on the elastic overhang sections to move inward. The fixed limiting structure on the first insulating shell 15 cooperates with the assembly structure of the contact piece 4 to ensure that the opposite contact pieces 4 will not be displaced in the axial direction due to the insertion to cause the shorting parts to be misaligned and affect the connection of the circuit. When the shorting parts of the two contact pieces 4 are completely contacted, the signal circuit shorting is completed.

[0032] The short connecting part can be connected to the inner side of the elastic overhanging section in various ways. For example, the short connecting part can be a contact spring arm fixed to the inner side of the elastic overhanging section by welding. This fixing method increases the processing difficulty of the part itself and reduces the elastic deformation range of the contact spring arm, which affects the elasticity of the short connecting part to some extent. Therefore, in one embodiment, the short connecting part is a punched contact spring arm 6, which helps to reduce the processing difficulty and also achieves the lightweight requirement of the part. The direction of the contact spring arm 6 is not fixed and can be a contact spring arm extending towards the inner side of the terminal end or away from the terminal end. Considering the relative arrangement of the chip contact 4 during installation, if the contact spring arm is arranged to extend towards the inner side of the terminal end, after installing the chip contact 4 on one side, the contact spring arm 6 on the installed chip contact 4 may interfere with the installation of the chip contact 4 on the other side. Therefore, in a more preferred embodiment, the contact spring arm 6 is arranged to extend towards the inner side away from the terminal end. Specifically, the contact spring arm 6 is an extension section extending towards the inner side away from the terminal end, and the end of the extension section and the end of the opposite extension section always maintain a distance less than the distance between the two opposite pressure receiving parts, ensuring that when the pressure receiving part is laterally pressed, the extension section of the contact spring arm 6 contacts before the end of the pressure receiving part. In order to make the plug and socket more time-saving and labor-saving during plugging, in a more preferred embodiment, the end of the elastic overhanging section away from the terminal end has a bending section bent inward and bulging outward, the pressure receiving part is the outer side of the bending section, and the outer side of the bending section is a smooth guide surface. When the plug and socket are plugged, the smooth guide surface can cooperate with the smooth chamfered pressure receiving structure at the orifice of the second insulating shell 16 to ensure smooth plugging. In order to ensure that after the plug and socket are plugged, the elastic overhanging section of the chip contact 4 can quickly recover to the free state when the pressure receiving structure is not pressed, in a more preferred embodiment, the elastic overhanging section has inwardly bent bends at both ends in the width direction corresponding to the position of the contact spring arm.

[0033] In order to avoid the axial displacement of the assembled piece contact 4 during the plug-in process of the plug and the socket, which will cause the short-circuit part position dislocation and affect the circuit connection, the assembly structure is further provided on the piece contact 4. The assembly structure cooperates with the inner side of the first insulating shell 15 to realize the fixed limiting of the piece contact 4 in the axial direction. The assembly structure is provided by setting the mounting protrusion on the mounting inner cavity of the first insulating shell 15, and the corresponding bending outward is set at both ends of the part corresponding to the mounting protrusion of the piece contact 4, and the bending part is used in the way of crimping to hold the mounting protrusion. Since this mounting method is more complicated and will make the structure of the part more complex, therefore, an embodiment is further provided, in which the assembly structure is provided at the position between the wiring end and the short-circuit structure of the piece, and the assembly structure includes the inward bending wing 8 of the width direction two side edges of the piece. The mounting inner cavity of the first insulating shell 15 is provided with the front and rear extending insertion sliding groove, which is oppositely arranged on the inner side wall of the mounting inner cavity, and the bending wing 8 is used to cooperate with the front and rear extending insertion sliding groove in the first insulating shell 15. When the two bending wings 8 of the piece contact 4 are in the insertion sliding groove 13, the outer side wall of the piece contact 4 is tightly attached to the inner side wall of the mounting inner cavity. In order to further ensure the stability of the piece contact 4 in the axial direction after the mounting is completed, the limiting structure is further provided between the two bending wings of the piece contact 4. The limiting structure can be the protruding barb provided on the outer side of the piece, and the knurling can also be provided on the outer side of the piece. At this time, the inner diameter of the mounting inner cavity of the first insulating shell 15 is set to be the size that can be in interference fit with the top of the barb or the outer wall of the knurling. When the plug and the socket are plugged in, the friction between the limiting structure and the inner wall of the mounting inner cavity is increased, so as to realize the limiting of the piece contact in the axial direction. Considering the complexity of the machining process and the machining cost, in a more optimal embodiment, the limiting structure is set as the buckle structure 9, which is the outward punching spring plate extending towards the wiring end. Correspondingly, the limiting groove 12 capable of cooperating with the spring plate is oppositely arranged on the inner wall of the mounting inner cavity of the first insulating shell 15. The outward spring plate on the piece contact 4 is clamped in the limiting groove 12 on the inner side of the first insulating shell 15, which realizes the limiting of the piece contact 4 in the axial direction. When the each pressure part 5 of the pair of piece contacts 4 is laterally pressed by the internal pressing structure 11 of the second insulating shell 16, the pressing structure 11 has the counterforce on the piece contact 4 in the direction opposite to the plug-in direction of the plug, and the limiting groove 12 overcomes the counterforce to limit the piece contact 4.

[0034] In view of the contact stability of the pair of blade contacts 4 during pressure contact, in order to improve the elastic pre-tightening force of the blade contacts 4, in a more preferred embodiment, a transition section 7 is further provided on the blade contacts 4, which can be variously arranged on the elastic overhanging section close to the short-circuiting part, specifically, a transition section can be arranged between the root 41 and the short-circuiting part on the elastic overhanging section, which is provided as a hollow structure, which can not only make the blade contacts have a certain elastic pre-tightening force, increase the stability of the contact between the short-circuiting parts, and improve the anti-vibration performance, but also can have a beneficial effect on the light weight requirement of the parts. The present application provides another embodiment for the transition section 7, specifically, the transition section is arranged as an inner drum 17 between the root 41 and the short-circuiting part on the elastic overhanging section, which can also improve the anti-vibration performance of the blade contacts, and the inner drum 17 can improve the strength of the buckle 9 and the strength of the root of the transition section 7. The tail of the blade contact is a wiring terminal 10, in one embodiment, the wiring terminal 10 can adopt a semi-enclosed structure formed by inwardly bending the upper and lower ends of the tail of the blade contact 4, and in use, the wire harness is inserted into the semi-enclosed structure of the pair of blade contacts 4, and then the wire harness is fixed by pressure contact. In another embodiment, the wiring terminal 10 can also use welding to fix the wire harness, specifically, a solder cup can be arranged on the tail of the blade contact, and the wire harness stripping section is fixed by soldering.

[0035] The present application also provides a blade contact, the embodiment of the blade contact is the same as the structure of the blade contact in the high-voltage interlocking short-circuiting structure described above, and this will not be described again.

[0036] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by applying the contents of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A chip contact, characterized by, The pair of contacts are arranged oppositely and each comprises a contact piece having a terminal end, an assembling structure for fixed assembly with a first insulating housing, and a short-circuit structure, the short-circuit structure comprising an elastic overhang section having a pressure receiving portion (5) on the elastic overhang section for being pressed laterally by a pressing structure of a mating connector to move the elastic overhang section towards the elastic overhang section of the other contact piece, and a short-circuit portion on the elastic overhang section for contacting the short-circuit portion on the other contact piece when the elastic overhang section is pressed.

2. The chip contact according to claim 1, characterized in that The short-circuit portion is a contact spring arm (6) punched on the elastic overhang section.

3. The chip contact of claim 2, wherein, The contact spring arm (6) extends inwardly from the back of the terminal end.

4. The chip contact according to any one of claims 1 to 3, characterized in that The end of the elastic overhang section away from the terminal end has a bent section bent inwardly and bulged outwardly, the pressure receiving portion (5) is the outer side of the bent section, and the outer side of the bent section is a smooth guide surface.

5. The chip contact according to any one of claims 1 to 3, characterized in that The contact spring arm (6) is provided with inwardly bent portions at both ends in the width direction of the contact spring arm (6) on the elastic overhang section.

6. The chip contact according to any one of claims 1 to 3, characterized in that The assembling structure is provided on the contact piece at a position between the terminal end and the short-circuit structure, and comprises inwardly bent wings (8) at both sides of the contact piece in the width direction, the bent wings (8) being used for cooperating with an insertion groove (13) in the first insulating housing, and further comprising a limiting structure provided between the two bent wings (8).

7. The chip contact of claim 6, wherein The limiting structure is a buckle structure (9) protruding outwardly.

8. The chip contact of claim 7, wherein, The buckle structure (9) is a spring piece punched outwardly and extending towards the terminal end.

9. The chip contact according to any one of claims 1 to 3, characterized in that The elastic overhang section has a transition section (7) between the root (41) and the short-circuit portion, and the transition section (7) is provided with a hollow structure.

10. A high voltage interlock short structure, characterized in that, The first insulating housing (15) has a front-to-rear extending mounting cavity, and the pair of contact pieces are mounted in the mounting cavity, the contact pieces being the contact piece (4) according to any one of claims 1-9, and the first insulating housing (15) is provided with a relief hollow corresponding to the pressure receiving portion of the contact piece for exposing the pressure receiving portion, so that the pressure receiving portion is pressed by the pressing structure of the mating connector when the mating connector is inserted.

11. The high-voltage interlock short structure of claim 10, wherein, The inner wall of the mounting cavity is provided with front-to-rear extending insertion grooves (13) for cooperating with the bent wings (8) of the contact piece.

12. The high-voltage interlock short structure according to claim 10 or 11, characterized in that, Opposite sides of the inner wall of the mounting cavity are provided with limiting grooves (12) for cooperating with the buckle structure (9).

Images