A connector with a protection circuit

Abstract

The present invention relates to a connector with a protection circuit. The connector comprises an outer shell, wherein a fuse assembly is mounted on the outer shell via an accommodating cavity. A mounting groove with an opening on one side is provided on the fuse base of the fuse assembly, and the fuse is detachably mounted in the mounting groove. At the same time, a window portion is provided on the outer shell, and a sealing cover is detachably mounted on the window portion so that the opening of the mounting groove faces the window portion. The sealing cover can be removed and mounted to realize simple replacement, maintenance or installation of the fuse, thereby overcoming the technical difficulty of fuse maintenance and solving the problem that the connector product does not have a circuit protection function.

Description

Technical Field

[0001] The invention belongs to the technical field of connector manufacturing, and in particular relates to a connector with circuit protection function, capable of automatic fusing protection under high voltage or high current, and easy to maintain. Background Art

[0002] Generally, a fuse is connected to a circuit and has a fusible element that melts and is cut off by the heat generated when an overcurrent flows through the circuit. Therefore, the fuse is used to automatically prevent an overcurrent from flowing through the circuit.

[0003] In the prior art, fuses / protectors in the circuit are all set separately. Due to structural design requirements, connector products cannot meet the maintenance requirements for fuse replacement and do not have circuit protection functions.

[0004] However, as electronic products tend to be miniaturized, the additional installation of fuses may have an adverse effect on the miniaturization of electronic products. In the current market, there is a demand for connector products to have multiple functions in addition to circuit connection.

[0005] Therefore, there is an urgent need for a connector product with circuit protection function and convenient maintenance. Summary of the Invention

[0006] The present invention aims to provide a connector with a protection circuit to solve the problem that existing connector products do not have a circuit protection function.

[0007] The specific scheme is as follows: A connector with a protection circuit includes an outer shell, a housing provided with a cavity, and a fuse assembly provided in the cavity; the fuse assembly includes a fuse base, a fuse, and a conductive terminal:

[0008] The fuse base includes a mounting slot, and a conductive terminal is provided at each end of the mounting slot; the fuse is provided in the mounting slot and electrically connected to the two conductive terminals on both sides;

[0009] A window portion is further provided on the outer shell at a position corresponding to the fuse, and a sealing cover is detachably mounted on the window portion;

[0010] The installation slot is provided with a notch portion open toward the window portion, so that the fuse can be installed and / or replaced through the window portion.

[0011] A further technical solution of the present invention is: the conductive terminal includes a wiring end and a fixing end, the fixing end is provided with an elastic claw; the claw elastically clamps the end position of the fuse to achieve electrical connection.

[0012] A further technical solution of the present invention is that: the fuse base is locked and fixed to the inner wall of the outer shell on the side away from the window portion;

[0013] The outer shell is further provided with a wiring groove, which is arranged on a side of the fuse base away from the window portion.

[0014] A further technical solution of the present invention is: on the fuse base, there are multiple groups of mounting slots, which are arranged side by side; and a notch is provided on each mounting slot at a position corresponding to the fuse body.

[0015] A further technical solution of the present invention is that: a first wire-passing opening and a second wire-passing opening are further provided at the upper and lower ends of the accommodating cavity, and the fuse assembly is provided between the first wire-passing opening and the second wire-passing opening;

[0016] It also includes a cable, which is connected to the first cable opening and extends a plurality of cable cores toward the accommodating cavity; the cable cores extend out of the accommodating cavity through the second cable opening;

[0017] There is at least one cable core wire: the two conductive terminals of one installation slot are connected to the cable core wire to achieve fuse protection for the cable core wire.

[0018] A further technical solution of the present invention is: the outer shell includes an upper shell and an intermediate shell connected to the lower end of the upper shell:

[0019] The lower end of the upper shell is provided with an opening, and the fuse assembly is installed in the upper shell through the opening; the window portion is provided in the upper shell;

[0020] A positioning boss is provided on the sealing cover at a position corresponding to the window portion and inserted into the window portion, and a sealing ring surrounding the window portion is provided between the outer wall surface of the upper shell and the wall surface of the sealing cover.

[0021] A further technical solution of the present invention is that the sealing cover is made of transparent or substantially transparent plastic material.

[0022] A further technical solution of the present invention is that the upper shell and the intermediate shell are adapted to form a connecting flange, which is locked and connected by a bolt assembly:

[0023] A sealing gasket is provided between the upper shell and the middle shell. At the same time, a positioning boss-sunk groove structure penetrating the sealing gasket is provided on the adjacent end surfaces of the upper shell and the middle shell to achieve precise alignment.

[0024] A further technical solution of the present invention is that a wiring frame for fixing the module connector is further provided in the intermediate shell.

[0025] A further technical solution of the present invention is: it also includes a lower shell component arranged below the intermediate shell; a double fastener is provided between the intermediate shell and the lower shell component, and the double fastener is pivotally arranged on one of the intermediate shell or the lower shell component and hooked and connected to the other one.

[0026] Beneficial effects: The connector of the present invention is provided with an outer shell, and the outer shell is provided with a fuse assembly through an accommodating cavity. The fuse base of the fuse assembly is provided with a mounting groove with an opening on one side, and the fuse can be removably installed in the mounting groove; at the same time, a window portion is provided on the outer shell, and a sealing cover is removably installed on the window portion so that the opening of the mounting groove faces the window portion. Then, by disassembling and assembling the sealing cover, a simple replacement, maintenance or installation operation of the fuse is realized, thereby overcoming the technical difficulty of fuse maintenance and solving the problem that the connector product does not have a circuit protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a first embodiment of a connector with circuit protection according to the present invention is shown;

[0028] Figure 2 Shown Figure 1 Schematic diagram of the preliminary explosion structure;

[0029] Figure 3 Shown Figure 2 Schematic diagram of the structure with further explosive decomposition;

[0030] Figure 4 Shown Figure 1 Schematic diagram of the sealing cover disassembly and assembly structure;

[0031] Figure 5 Shows a cross-sectional view of the upper housing after the cables are installed;

[0032] Figure 6 Shown Figure 5 Cross-sectional view of the section at BB;

[0033] Figure 7 shows a top view of the intermediate housing;

[0034] Figure 8 A cross-sectional view showing the connection between the intermediate housing and the upper housing;

[0035] Figure 9 The figure shows a schematic structural diagram of a second embodiment of a connector with circuit protection according to the present invention. DETAILED DESCRIPTION

[0036] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the present disclosure and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, one of ordinary skill in the art will understand other possible embodiments and the advantages of the present invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0037] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] Combine Figures 1 to 3 As shown, this embodiment provides a connector with a protection circuit, including an outer shell, wherein the outer shell is provided with an upper shell 1 and an intermediate shell 5 connected to the lower end of the upper shell 1, and an accommodating cavity 10 is provided in the upper shell 1 for installing the internal fuse assembly 3.

[0040] The fuse assembly 3 includes a fuse base 31 , a fuse 33 and a conductive terminal 310 .

[0041] The fuse base 31 is provided with three parallel mounting slots 311, with the length of each mounting slot 311 defined as a vertical direction. Each mounting slot 311 is provided with a conductive terminal 310 at each end along its length. The fuse 33 is positioned in the middle of the mounting slot 311, with its upper and lower ends electrically connected to the two conductive terminals 310 on either side for installation.

[0042] The fuse 33 comprises a glass column main body, a fuse wire is arranged in the glass column, and a cylindrical conductive cap is respectively arranged at the upper and lower ends of the glass column, and the conductive cap is electrically connected to the internal fuse wire.

[0043] In order to achieve convenient installation of the fuse 33, each conductive terminal 310 forms an elastic claw at one end facing the fuse 33. Preferably, the claw includes two arc-shaped cards, which are used to elastically clamp on the conductive cap to achieve electrical connection; at the same time, the end of the conductive terminal 310 facing away from the fuse 33 forms a wiring terminal, which is U-shaped and includes a conductive copper sheet and a clamping screw, which is used to screw and clamp the connected cable to achieve electrical connection with the cable. The wiring terminal is existing technology and will not be described here.

[0044] At the same time, in order to facilitate the operation of disassembling and assembling the fuse 33, a notch is provided on each installation slot 311 corresponding to the position of the fuse body 33, so that tweezers or fingers can be used to clamp the fuse, so that the fuse 33 can be inserted into the conductive terminal 310 or removed from the conductive terminal 310.

[0045] A window portion 11 is further provided on the upper shell 1 at the position corresponding to the fuse 33 on the fuse assembly 3. At the same time, the side surface of each installation slot 311 is provided with a notch portion open toward the window portion 11 to enable the fuse 33 to be installed and replaced through the window portion 11. The operation is convenient and there is no need to remove the fuse assembly 3 or rewire the wiring.

[0046] Recombination Figure 4 As shown, in order to achieve sealing, a groove 191 surrounding the window portion 11 is provided on the outer wall surface of the upper shell 1 at a position corresponding to the window portion 11, and a sealing ring 91 adapted to surround the window portion 11 is provided in the groove 191, and the sealing ring 91 can partially protrude out of the groove 191; a sealing cover 9 is also provided, and an adapted alignment boss is provided at a position corresponding to the window portion 11 on the sealing cover 9, the alignment boss is inserted into the window portion 11, and the wall surface of the sealing cover 9 is in contact with the sealing ring 91 to achieve tight sealing.

[0047] In order to further improve the positioning accuracy, the upper shell 1 is provided with a threaded boss 19 with an internal thread at the top angle position corresponding to the sealing cover 9. The sealing cover 9 is correspondingly provided with a through hole. The threaded boss 19 is inserted into the through hole, and then the mounting bolt is screwed in to lock the sealing cover 9. The threaded boss 19 on the upper shell 1 and the boss on the sealing cover can achieve precise positioning.

[0048] The sealing cover 9 is detachably mounted on the window portion 11 and seals the window portion 11: the position corresponding to the sealing cover 9 on the upper shell 1 is concave to form a concave bottom, and threaded holes are provided around the concave bottom. The sealing cover 9 is fixed to the upper shell 1 by multiple screws and seals the window portion 11; a square window portion is provided on one side of the upper shell 1, and threaded holes and sealing grooves are provided around the window portion. The corresponding plastic sealing cover is provided with a matching square boss, and a sink is provided at the threaded hole to facilitate the placement of the screw head. The plastic sealing cover is fixed to the upper shell 1 by screw-locking and compressing the sealing ring, thereby achieving the required IP protection level. At the same time, the plastic sealing cover is made of transparent or translucent material so that the on-off status of the internal fuse can be observed from the outside, and the plastic cover can be opened in time to replace damaged parts.

[0049] Recombination Figure 5 and Figure 6 As shown, the connector of this embodiment is arranged on the cable to serve as a fixed connector at the end of the cable: the upper and lower ends of the accommodating cavity 10 of the upper shell 1 are also provided with a first wire passing opening and a second wire passing opening, and the fuse assembly 3 is arranged between the first wire passing opening and the second wire passing opening.

[0050] It also includes a cable 41, and three groups of cable core wires connected to the cable 41 are provided at the end of the cable 41, and each group of cable core wires includes a first core wire 42 and a second core wire 43; wherein, the cable 41 is fixedly arranged on the first wire passing port at the upper end of the upper shell 1, and then the cable core wire is arranged in the accommodating cavity 10, and extends out of the accommodating cavity 10 from the second wire passing port at the bottom.

[0051] Among them, for each group of cable core wires, the fuse 33 is connected to the first core wire 42, and the specific method is: for the first core wire 42, the two conductive terminals 310 of a corresponding installation slot 311 are connected to the first core wire 42, so that the fuse 33 is connected to the first core wire 42 and protected by the fuse 33.

[0052] The fuse base 31 is secured to the inner wall of the upper housing 1, facing away from the window 11, by means of locking screws 32. To facilitate routing of the second core wire 43, a routing trough 101 is provided in the accommodating cavity 10 of the upper housing 1. This routing trough 101 is located on the side of the fuse base 31 facing away from the window 11. Specifically, the sidewall of the upper housing 1 projects outward, away from the fuse base 31, to form a recessed portion. The second core wire 43 is routed within this routing trough 101, bypassing the fuse assembly 3 in an upward and downward manner.

[0053] Recombination Figure 7 and Figure 8 As shown, the lower end of the upper shell 1 is provided with an opening, and the fuse assembly 3 is installed in the upper shell 1 through the opening; then, the lower end of the upper shell 1 is connected to the intermediate shell 5 to enclose and fix the fuse assembly 3.

[0054] The upper shell 1 and the intermediate shell 5 are adapted to form a rectangular connecting flange for locking connection via a bolt assembly 8: preferably, a copper nut with an internal thread is embedded in the countersunk hole 52 on the flange surface of the intermediate shell 5, and is fixed to the intermediate shell by tightening the compression sealing gasket 51 with screws pre-locked on the upper shell 1, thereby achieving the required IP protection grade.

[0055] In order to achieve the IP protection level, strict requirements are imposed on the alignment accuracy and sealing performance. In this embodiment, a sealing gasket 51 is provided between the upper shell 1 and the intermediate shell 5. At the same time, a positioning boss-sink structure penetrating the sealing gasket 51 is provided on the adjacent end surfaces of the upper shell 1 and the intermediate shell 5 to achieve precise alignment.

[0056] Among them, a guide column is provided at the bottom mounting surface of the upper shell, and a countersunk hole 53 is provided at the corresponding mounting surface of the middle shell 5; the guide column is inserted into the countersunk hole 53 to form the positioning boss-sunk groove structure to achieve installation alignment; and the positioning boss-sunk groove is covered in the sealing gasket 51, and its sealing effect is good.

[0057] At the same time, the intermediate shell 5 is hollow and has an installation chamber 50 inside to accommodate the wiring frame 6 to fix the cable introduced into the fuse assembly 3; the wiring frame 6 is used to install the module connector, and the cable core wire is installed on the connector to fix the cable. The structural features of the wiring frame 6 belong to the existing technology. For example, Chinese patent 201822229827.6 has disclosed a plug-in wiring frame 6, which will not be repeated here.

[0058] Example 2

[0059] Combine Figure 9 As shown, this embodiment provides a connector with circuit protection function as a plug-in connector, which mainly includes a connector body. The connector body has the same structure as that of the first embodiment, and the main differences are:

[0060] A plug connector 100 is provided on the first wire-passing port at the upper end of the upper shell 1 , and an internal terminal electrically connecting the plug connector 100 and the fuse assembly is provided inside the upper shell 1 . The internal terminal is conventional technology and is not shown in the figure.

[0061] Among them, the lower end of the intermediate shell 5 is also pivotally installed with a double fastener 7 for fixing the external lower shell 55; the double fastener 7 has two sets of arc-shaped clamping arms, the upper ends of the clamping arms are pivotally connected to the intermediate shell 5, and then, the corresponding position of the lower shell 55 is provided with a boss 551, and then the double fastener 7 is clamped on the lower shell 55 to achieve connection; among them, there are two double fasteners 7, which are symmetrically arranged on the opposite sides of the intermediate shell 5 to achieve a stable fixing effect of the connecting piece.

[0062] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A connector with a protective circuit as a plug-in connector, characterized in that: comprising an outer shell, The outer shell includes an upper shell and an intermediate shell connected to the lower end of the upper shell. The cable is fixedly arranged at the upper end of the upper shell. A plug-in component is arranged in the intermediate shell. The upper shell is provided with an accommodating cavity, and the accommodating cavity is also provided with a fuse assembly; the fuse assembly includes a fuse base, a fuse and a conductive terminal: The fuse base includes a mounting slot, and a conductive terminal is provided at each end of the mounting slot; the fuse is provided in the mounting slot and electrically connected to the two conductive terminals on both sides; A window portion is further provided on the upper shell at a position corresponding to the fuse, and a sealing cover is detachably mounted on the window portion; The installation slot is provided with a notch portion open toward the window portion, so that the fuse can be installed and / or replaced through the window portion.

2. The connector according to claim 1, wherein: The conductive terminal includes a connection end and a fixing end, and the fixing end is provided with an elastic claw; the claw elastically clamps the end position of the fuse to achieve electrical connection.

3. The connector according to claim 1, wherein: The fuse base is locked and fixed on the inner wall of the upper shell on the side away from the window portion; The upper shell is further provided with a wiring groove, which is arranged on a side of the fuse base away from the window portion.

4. The connector according to claim 1, wherein: There are multiple groups of mounting slots on the fuse base, which are arranged side by side; a notch is provided on each of the mounting slots at a position corresponding to the fuse body.

5. The connector according to claim 1, wherein: The upper and lower ends of the accommodating cavity are further provided with a first wire-passing opening and a second wire-passing opening, and the fuse assembly is arranged between the first wire-passing opening and the second wire-passing opening; The cable is connected to the first wire-passing opening and a plurality of cable cores are extended toward the accommodating cavity; the cable cores extend out of the accommodating cavity through the second wire-passing opening; There is at least one cable core wire: the two conductive terminals of one installation slot are connected to the cable core wire to achieve fuse protection for the cable core wire.

6. The connector according to any one of claims 1 to 5, characterized in that: An opening is provided at the lower end of the upper shell, and the fuse assembly is installed in the upper shell through the opening; a positioning boss is provided on the sealing cover at a position corresponding to the window portion and inserted into the window portion, and a sealing ring surrounding the window portion is also provided between the outer wall surface of the upper shell and the wall surface of the sealing cover.

7. The connector according to claim 6, wherein: The sealing cover is made of transparent or substantially transparent plastic material.

8. The connector according to claim 6, wherein: The upper shell and the intermediate shell are adapted to form a connecting flange to be locked and connected by a bolt assembly: A sealing gasket is provided between the upper shell and the middle shell. At the same time, a positioning boss-sunk groove structure penetrating the sealing gasket is provided on the adjacent end surfaces of the upper shell and the middle shell to achieve precise alignment.

9. The connector according to claim 1, wherein: It also includes a lower shell component arranged below the intermediate shell; a double fastener is provided between the intermediate shell and the lower shell component, and the double fastener is pivotally arranged on one of the intermediate shell or the lower shell component and hooked and connected to the other one.

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