CN218939586U - One-to-two fuse connector - Google Patents

Abstract

The utility model discloses a one-to-two fuse connector, which comprises an insulating shell, a first power terminal and a second power terminal, wherein a second electrode cavity of the insulating shell surrounds a second electrode cavity, and the first power terminal is electrically connected with a first conductive copper bar, extends from an upper layer to a lower layer in the first electrode cavity and is connected to a first cable and a second cable in one-to-two mode; the second power terminal is electrically connected with the second conductive copper bar, the upper layer of the second electrode cavity is detachably connected with the first fuse and the second fuse, the output end of the first fuse is connected to the third cable of the lower layer, and the output end of the second fuse is connected to the fourth cable of the lower layer. The fuse connector is provided with the fuses and the devices are arranged in a layered manner in each shunt, and the upper layer only accommodates the detachable fuses, so that the conductive paths are simplified to ensure that the insulation distance of the electrodes is increased, and meanwhile, the size of the connector is minimized, so that the fuse connector is suitable for a flexible combined connector of a new energy automobile to realize a designable power distribution scheme.

Description

One-to-two fuse connector

Technical Field

The utility model relates to the technical field of new energy power distribution connectors, in particular to a one-to-two fuse connector.

Background

In the field of new energy automobiles such as hybrid power, electric power and the like, a high-current connector is required to be used for realizing the electric connection of the new energy automobile. For example, a hybrid vehicle may include an electric motor, a Main Control Unit (MCU) for controlling the electric motor, a high-voltage battery for supplying power to the electric motor, and the like, and use a high-voltage connector for electrically connecting related components.

In the prior art, high-voltage batteries of electric vehicles are typically distributed using high-voltage distribution boxes. Different circuits of the distribution box are connected with different external devices, such as a motor control unit, an air conditioner module, a heater, a wireless charger and the like, and a high-current high-voltage connector is needed to be used when the different circuits are connected with the external devices.

However, in order to ensure the safety of high-current electric equipment and meet the safety regulation requirement, the distribution box of the traditional electric vehicle has the advantages of larger whole volume, occupying space in the vehicle and higher whole maintenance and replacement cost.

The devices such as a fuse and a connector are generally configured in the distribution box, the fuse is used for protecting an electricity loop under the condition of short circuit, and the distribution box is quite large in size under the condition that the number of external connection devices of the distribution box is large, so that the electric connection of the electricity module inside the new energy automobile cannot be flexibly adapted.

In addition, if the fuse is damaged or normally fused, the fuse needs to be replaced, and electrical devices such as a high-voltage distribution box and the like need to be tested for electrical properties of the whole machine, such as insulation resistance, withstand voltage, conduction test and airtight performance after assembly. When the case is opened, there is a risk of introducing foreign matters from outside and damaging the device or the wire.

Therefore, the existing power distribution technology of new energy automobiles needs to be improved.

Disclosure of Invention

Based on this, in order to solve the above technical problems in the conventional technology, the present utility model provides a layered arrangement device, in which the upper layer only accommodates the detachable fuses and minimizes the connector size while simplifying the conductive path to ensure the increase of the insulation distance of the electrodes, thereby providing a one-to-two fuse connector of a flexible power distribution module with smaller volume.

The utility model relates to a one-to-two fuse connector, which comprises an insulating shell, a first power terminal and a second power terminal, wherein the insulating shell is divided into an upper layer and a lower layer, the inside of the insulating shell is divided into a first electrode cavity and a second electrode cavity by an insulating wall, the second electrode cavity surrounds the second electrode cavity, and the first power terminal is electrically connected with a first conductive copper bar, extends from the upper layer to the lower layer in the first electrode cavity, and is connected to a first cable and a second cable in one-to-two mode; the second power terminal is electrically connected with the second conductive copper bar, the upper layer of the second electrode cavity is detachably connected with the first fuse and the second fuse, the output end of the first fuse is connected to the third cable at the lower layer in a folding way, the output end of the second fuse is connected to the fourth cable at the lower layer in a folding way, and the first power terminal and the second power terminal are arranged front and back along the output direction of the cables.

According to the one-to-two fuse connector, each shunt is connected with the fuse with over-current protection and is provided with the devices in a layered mode, the detachable fuse is arranged on the upper layer, the connecting terminal and the cable are fixedly arranged on the lower layer, the connector is reduced in size to the length and the width of the top to only accommodate the fuse, in addition, the inner conductive path is simplified to the minimum extent through the longitudinal arrangement of the power terminal, the size of the connector is minimized while the insulation distance of the electrode is increased under the limited space of the connector shell, a flexible power distribution module with smaller size is provided, and the new energy automobile can be flexibly combined with the connector to realize a designable power distribution scheme.

The power terminals are arranged in a front-back straight line along the output direction of the cable, the power terminals close to the output direction are connected by adopting simple straight line branching and outputting, the power terminals far away from the output direction are connected to be used as fuses of circuit safety insurance, the output ends of the fuses are folded back from the lower part to complete connection, the connectors are designed in a bolt space at the connection positions of the power terminal input, the fuse output step-type folding back to the lower layer and the wire lug and the cable, the simplest conductive path and the most stable connection are planned on the premise of ensuring the safe electric isolation distance, the anode conductive terminal and the cathode conductive terminal are prevented from crossing, meanwhile, the whole design of the power terminals and the connecting terminals enables the connector volume to be minimum on the premise of meeting the electric design requirement, and the compactness requirement of the internal distribution of a new energy automobile is adapted and improved.

The conductive terminal in the shell of the one-to-two fuse connector completely adopts a conductive circuit design fixed by bolts, meets the requirements of the harshest vibration and impact environment on the connection reliability and stability of the high-voltage connector, and is not easy to loosen.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Wherein:

FIG. 1 is a schematic exploded view of a one-to-two fuse connector according to the present utility model;

FIG. 2 is a schematic structural view of a metal shell of the connector;

FIG. 3 is an internal structural view of the connector insulating housing;

FIG. 4 is an outside view of the connector housing;

FIG. 5 is an exploded view of the conductive copper bars and fuses within a one-to-two fuse connector of the present utility model;

FIG. 6 is a block diagram of the internal conductive device assembly of the one-to-two fuse connector of the present utility model;

FIG. 7 is a perspective view of one of the lugs according to the present utility model;

FIG. 8 is a block diagram of a one-to-two fuse connector of the present utility model with a metal cover removed and a fuse protector cover;

FIG. 9 is a schematic view of a tail shield structure of a one-to-two fuse connector according to the present utility model;

FIG. 10 is a view showing the mounting structure of the inner and outer shield rings of the one-to-two fuse connector of the present utility model;

FIG. 11 is a schematic diagram showing an exploded view of a clamping portion of a wire harness of a one-to-two fuse connector according to the present utility model;

FIG. 12 is a schematic illustration of an exemplary plug end cap input shield configuration of a one-to-two fuse connector of the present utility model;

FIG. 13 is a diagram of a secondary lock structure of a one-to-two fuse connector and receptacle according to the present utility model;

FIG. 14 is an exploded view of the secondary lock of the one-to-two fuse connector of the present utility model;

FIG. 15 is an exploded view of the assist lever and tab of the one-to-two fuse connector of the present utility model;

FIG. 16 is another view of the insert of the one-to-two fuse connector of the present utility model;

FIG. 17 is a schematic view of the power assist lever forward structure of the one-to-two fuse connector of the present utility model;

fig. 18 is a body cross-sectional view of a booster tie rod of a one-to-two fuse connector of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, an exploded view of a one-to-two fuse connector according to the present utility model is shown; fig. 2 to 4 are structural views of a metal shell and an insulating case; fig. 5 to 8 are exploded and combined views of the conductive copper bar. Fig. 9 to 12 are block diagrams of an input-side shielding structure and a cable output-side shielding structure; fig. 13 to 18 are diagrams of secondary lock structures.

According to the one-to-two fuse connector, each shunt is connected with the fuse with over-current protection and is provided with the devices in a layered mode, the detachable fuse is arranged on the upper layer, the connecting terminal and the cable are fixedly arranged on the lower layer, the connector is reduced in size to the length and the width of the top to only accommodate the fuse, in addition, the inner conductive path is simplified to the minimum extent through the longitudinal arrangement of the power terminal, the size of the connector is minimized while the insulation distance of the electrode is increased under the limited space of the connector shell, a flexible power distribution module with smaller size is provided, and the new energy automobile can be flexibly combined with the connector to realize a designable power distribution scheme.

The conductive terminals in the connector housing are designed entirely with the conductive traces bolted. The overall design of the power terminal and the connecting terminal of the embodiment minimizes the connector volume on the premise of meeting the electrical design requirement; the fully bolted conductive line design resists shock and impact disturbances.

In this embodiment and the following description, the first power terminal is a negative power terminal, and the second power terminal is a positive power terminal. It is understood that in another embodiment, the first power terminal is a positive power terminal and the second power terminal is a negative power terminal.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Referring to fig. 1, an exploded view of a compact fuse connector of the present utility model is shown.

The connector comprises a metal shell 1, an insulating shell 4, a conductive copper bar 5, a fuse protection cover 49, a metal upper cover 12 and a power assisting pull rod 8.

As shown in fig. 2, the metal housing 1 is closed by the metal cap 12 to form a full-shielding device as a connector. Referring to fig. 4, a step surface 11 is disposed in the middle of the metal shell 1, the step surface 11 divides the inner portion of the metal shell into an upper layer and a lower layer, and a mounting hole for matching with the insulating plug portion 416 is formed on the step surface 11 to form the metal plug portion 112. The metal plug 112 is used to introduce power terminals. The side wall of the metal shell 1 is provided with a plurality of buckling grooves, such as buckling grooves 15, for fixing the insulating shell 4. The metal housing 1 is provided with four wire guides, such as wire guide 16, below the clamping groove 15.

Referring to fig. 3 and 4, the insulating housing 4 includes an upper layer E and a lower layer F at an inner portion thereof with reference to an insulating plug portion 416, a rectangular insulating wall 411 and a rectangular insulating wall 413 communicating with the insulating wall are disposed at a middle position inside the insulating housing 4, and the insulating housing 4 is divided into a first electrode chamber and a second electrode chamber which are insulated from each other. Wherein the first electrode chamber is surrounded by a rectangular insulating wall 411 and a square insulating wall 413. The first electrode chamber is provided with a first electrode position 414 located at an upper layer, a branching step 423 connecting the upper layer and the lower layer, and a pair of built-in nuts 421 and 422 provided at the lower layer.

The second electrode chamber is mainly distributed on the upper layer and surrounds the first electrode chamber, and comprises a second electrode position 413, a first fuse chamber and a second fuse chamber which are positioned on the upper layer, and further comprises a pair of built-in nuts 441 and 442 which are arranged on the lower layer. The first fuse chamber is provided with built- in nuts 432, 434 that fix the two fuse clips; the second fuse chamber is provided with two built- in nuts 436, 438 that secure the fuse clips.

The insulating housing 4 is provided with four wire guides, such as wire guide 483, on the side wall corresponding to the output position of the cable, and at least one pair of snaps, such as snaps 482 and 481, on the outer wall. The insulating housing 4 is provided at the bottom with an insulating plug-in part 416 for passing through the plug-in part 112 of the metal shell 1.

Referring to fig. 1, the latch on the outer side of the insulating housing 4 is engaged with the latch groove on the inner wall of the metal housing 4, such as latch 482 is engaged with the latch groove 15, so as to mount the insulating housing 4 into the metal housing 1.

The metal shell 4 forms a wire harness clamping part 17 at the position of the wire guide hole 16 and a wire harness protection cover 3 buckled on the wire harness clamping part. The wire row clamping portion 17 protrudes a plurality of hooks, such as hooks 171, and the wire row protecting cover 3 is provided with a plurality of assembling grooves 31, and the assembling grooves 31 are buckled with the hooks 171 to compress and protect the four outgoing wires.

Referring to fig. 1 and fig. 9 to 12, an insulation, sealing and shielding scheme of the connector is shown. The one-to-two fuse connector is provided with the integral insulation component, the sealing component and the shielding component, so that the connector for power distribution of the new energy vehicle-mounted cable achieves better insulation, sealing and shielding effects, and the fuse is more convenient to install and replace.

The end of the insertion part 112 of the metal shell 1 is clamped with the insertion end cover 9.

In a sealing arrangement, a second sealing ring 99 is arranged between the plug end cap 9 and the metal plug 112, as seen from the input end. A groove 18 is arranged around the top of the metal shell 1, and a third sealing ring 19 for sealing with the metal upper cover 12 is arranged in the groove 18. A first sealing ring 35 is arranged between the line protection cover 3 and the line clamping portion 17 as seen from the output end. The above arrangement places the connector as a whole in a sealed state.

As shown in fig. 12, in the shielding solution, the interlocking short-circuiting device 91 and the plugging shielding piece 95 are mounted on the plugging end cover 9.

The peripheral wall of the plugging end cover 9 is provided with a plurality of elastic sheet grooves 93, and the inner side of the plugging end cover 9 is provided with an interlocking short-circuiting device 91 and a plugging shielding sheet 95. The middle of the plugging shielding piece 95 is provided with a relief hole 952, and a plurality of shielding shrapnel, such as shielding shrapnel 951, are formed on the peripheral edge, and each shielding shrapnel passes through the corresponding shrapnel groove and abuts against the metal inner wall of the plugging part after being assembled. Such as shield clips 951, extend from the corresponding clip slots 93 and rest against the metal plug 112.

In the shielding scheme of the output end, each cable C1-C4 is sleeved with a shielding inner ring 62 and a shielding outer ring 61 at the position of the cable row clamping portion 17. The shield inner ring 62 is used to support the shield mesh surface bent from the corresponding cable, and the shield mesh surface is swaged with the outer shield ring. As shown in fig. 10, taking the shielding installation of the fourth wire lug 594 as an example, the shielding inner ring 62 supports the shielding mesh surface C42 bent from the fourth wire C4, and the outer shielding ring 61 is swaged on the shielding mesh surface C42. The outer shield ring 61 is mounted in the line clamping portion 17.

Referring to fig. 5 to 6, the conductive copper bar 5 includes a first power terminal 511, a second power terminal 513, a Z-type bus bar 52, a bus bar 53, a first conductive terminal 57, and a second conductive terminal 58.

The direction of the longitudinal arrangement of the power terminals is determined by the output direction of the cable, and in this embodiment, the output direction of the cable is used as the reference of the arrangement of the power terminals and the output position of the cable is used as the reference of the position. The first power terminal 511 and the second power terminal 513 are arranged in a front-back straight line along the output direction a, and in this embodiment, the first power terminal 511 is a negative power terminal, and the second power terminal 513 is a positive power terminal. The first power terminal 511 is close to the output position and is electrically connected to the first cable C1 and the second cable C2 of the output position in two parts directly through the Z-type bus bar 52. The second power terminal 513 is distant from the output position and is electrically connected to the first fuse 55 and the second fuse 56 from both sides by the bus bar 53 in one-to-two, the first fuse 55 is folded back to be connected to the third cable C3 of the output position by the first conductive terminal 57, and the second fuse 56 is folded back to be connected to the fourth cable C4 of the output position by the second conductive terminal 58.

The first power terminal and the second power terminal of this embodiment are arranged along the cable output direction straight line from front to back, adopt simple rectilinear mode to carry out separated time and output to the power terminal that is close to the output direction, carry out Z terminal connection and install the fuse as circuit safety to the power terminal that keeps away from the output direction, positive negative pole conductive terminal simple structure just can avoid crossing, optimize the inside space utilization of connection casing and can satisfy the safe electrical isolation distance of positive negative pole under less space condition.

In this embodiment, all terminals in the insulating housing 4 are firmly bolted, and the fully bolted conductive line design resists vibration and impact interference when the utility vehicle is in use. In order to achieve several bolting in the limited space of the insulating housing 4, each detail design of the conductive terminal is to make use of space, reducing the connector size.

Referring to fig. 5 and 6, the first power terminal 511 is provided with a first screw hole, and the Z-shaped bus bar 52 includes a stepped body, a first branch terminal 522 and a second branch terminal 521. The middle parts of the two branch terminals are provided with positioning grooves, and the first branch terminal 522 and the second branch terminal 521 are respectively provided with bolt holes. The stepped body leaves room for the assembly of the first power terminal 511 below. The body is provided with a bolt hole, and a first screw 514 passes through the bolt hole to be matched with the first bolt hole so as to fix the first power terminal 511 with the body.

The second power terminal 513 is provided with a second screw hole, and the bus bar 53 is provided with three bolt holes, and the first fuse clip 531, the second power terminal 513, and the second fuse clip 535 are respectively bolted. A second screw is passed through a bolt hole in the middle of the bus bar 53 to be engaged with the second screw hole to fix the second power terminal 513 to the bus bar 53.

The first fuse clip 531 is mounted on one side of the bus bar 53 by first bolt assemblies 532, 534 and the second fuse clip 535 is mounted on the other side of the bus bar 53 by second bolt assemblies 536, 532. The first conductive terminal 57 and the second conductive terminal 58 are identical in structure. The first conductive terminal 57 includes a step 571 and a connecting end 572, which form a space for assembling the nut 574, and bolt holes are formed in the step 571 and the connecting end 572. The second conductive terminal 58 includes a step 581 and a connecting end 582, which form a fitting space for the nut 584, and bolt holes are formed in the step 581 and the connecting end 582. The third fuse clip 533 is mounted to the step-out of-position 571 of the first conductive terminal 57 by a third bolt assembly 534, and the fourth fuse clip 537 is mounted to the step-out of-position 581 of the second conductive terminal 58 by a fourth bolt assembly 538.

Referring to fig. 8, for removable repair and replacement of fuses, the first fuse 55 is removably clamped between the first fuse clamp 531 and the third fuse clamp 533, and the second fuse 56 is removably clamped between the second fuse clamp 535 and the fourth fuse clamp 537.

As shown in fig. 5, the first shunt terminal 521 is fixed to the first wire ear 591 by the fifth bolt assembly 524, and the first wire ear 591 is electrically connected to the first cable C1; the second shunt terminal 522 is secured to a second wire ear 592 by a sixth bolt assembly 523, the second wire ear 592 electrically connecting the second cable C2. The connection end 572 of the first conductive terminal 57 is fixed to the third wire ear 593 by a seventh bolt assembly 573, and the third wire ear 593 is electrically connected to the third cable C3; the connecting end 582 of the second conductive terminal 58 is secured to the fourth lug 594 by the eighth bolt assembly 583, and the fourth lug 594 is electrically connected to the fourth cable C4.

In the scheme of achieving the bolt-fastening by making full use of the space, the first to fourth lugs 591 to 594 are identical in structure. As shown in fig. 7, taking the fourth lug 594 as an example, the fourth lug 594 is Z-shaped, and includes a lug step 5941 and a wire clamp 5942 that form a fitting space for a nut 595 thereunder. A pair of caulking pieces, a first caulking piece 5943 and a second caulking piece 5944 are provided on both sides of the wire clamp 5942. Fig. 10 is a state diagram of the wire core after the first and second caulking pieces 5943 and 5944 on both sides of the wire clip 5942 of the fourth lug 594 are caulking.

The connector of this embodiment all has bolt space design at power terminal input, fuse output ladder formula turn back to lower floor, line ear and cable hookup location, plans the simplest conductive path and the connection that stabilizes most under the prerequisite of guaranteeing safe electrical isolation distance, guarantees that positive negative pole conductive terminal avoids alternately, simultaneously, and power terminal and connecting terminal's global design accomplish the connector volume minimum under the prerequisite that satisfies electrical design requirement, adaptation and improvement new energy automobile inside distribution's compactibility requirement.

As shown in fig. 13, the one-to-two fuse connector of the present embodiment is pulled and fixed with the receptacle 100 by the secondary lock mechanism. The one-to-two fuse connector is provided with the secondary locking mechanism, and the connector and the socket 100 can be tensioned by rotating the power-assisted pull rod by means of the lever principle, so that the connector is more convenient to plug and the connection between the elements is more compact and stable.

In general, the secondary locking mechanism of the embodiment locks the inserting sheet on the body through the self-locking structure before and during the rotation of the power-assisted pull rod, so that the inserting sheet is ensured not to slide out of the power-assisted pull rod when the power-assisted pull rod does not rotate in place. When the power-assisted pull rod rotates in place, namely the power-assisted pull rod is attached to the locking surface of the high-voltage connector, the two jacking blocks jack up the limiting hooks of the two self-locking plates, and at the moment, the inserting piece is blocked on the body of the power-assisted pull plate under the action of the first angle of the inclination of the self-locking plates, so that the inserting piece cannot slide out due to misoperation. At the moment, a force is applied to the inserting piece, the first locking hooks of the inserting piece are pulled out and buckled on the cross beam, and meanwhile, the second locking hooks on two sides of the inserting piece are buckled on the end faces of the sliding tables on two sides of the travel channel, so that one-time locking is completed, and the position of the inserting piece is fixed. Simultaneously, the forward movement of the inserting piece is limited, and meanwhile, the secondary lock of the inserting piece is inserted into the lock seat to complete the secondary lock, so that the rotation of the power-assisted pull rod is limited, and the tensioning and connection between the high-voltage connector and the socket are ensured.

The following describes a specific secondary lock structure: a pair of force bearing shafts, such as force bearing shaft 102, are disposed in left and right positions on the socket 100. The force bearing shaft includes a stem portion and a restraining head.

The secondary lock mechanism is rotatably connected to both sides of the metal housing 1. As shown in fig. 14, a pair of rotating shafts, such as connecting shafts 15, are provided at both sides of the metal housing.

The metal upper cover 12 is provided with a first top block 13, a second top block 16 and a lock base 14.

The secondary locking mechanism comprises a power-assisted pull rod 8 and an inserting sheet 2. The booster pull rod 8 includes a body 80, and a first booster arm 81 and a second booster arm 82 extending from both sides of the body. The power-assisted pull rod structure of the secondary lock structure takes a second power-assisted arm 82 as an example to describe a specific structure, and the first power-assisted arm 81 and the second power-assisted arm 82 have the same structure.

The second power arm 82 is provided with an axle hole 821, and a first rotation limiting block 822 and a second rotation limiting block 823 are arranged at positions equidistant from the axle hole 821 and forming an included angle of 90 degrees. When the booster pull rod 8 rotates to the position shown in fig. 13 to be in butt joint with the socket 100, the second rotation limiting block 823 is limited by the second rotation limiting protrusion 16 of the housing and does not rotate any further so as to facilitate the butt joint of the connector 1 and the socket 100. When the booster tie rod 8 is rotated to be pulled up with the socket 100, the first rotation stopper 822 is limited by the first rotation limiting projection 17 of the housing, and enters a lock activated state.

The shaft hole 811 of the first booster arm 81 is assembled with the connecting shaft 15, and the shaft hole of the second booster arm 82 is assembled with the connecting shaft of the opposite side wall of the housing, so that the booster tie rod 8 is rotatably installed on both sides of the metal upper cover 12 of the housing. After the installation is completed, the body 80 of the booster tie rod 8 spans the metal upper cover 12 of the housing.

As shown in fig. 15, the body 80 of the booster tie rod 8 is provided with an assembling surface 83 and a cross member 84 at the middle thereof. A travel path is formed between the cross member 84 and the mounting surface 83. A stopper 831 is provided to protrude from the front of the fitting surface 83. The rear end is provided with a first self-locking groove 833 and a second self-locking groove 835, one side of the travel path is provided with a first sliding table 85, and the other side is provided with a second sliding table 86. The inner end surfaces of the first sliding table 85 and the second sliding table 86 are travel limiting surfaces for the forward sliding of the inserting sheet 2. As shown in fig. 15, the right side of the insert 2 at the rear of the second slide table 86 slides backward on the stroke limiting surface 87; as shown in fig. 17, the right side of the insert 2 slides forward on the second slide table 86 with a travel limiting surface 88.

Referring to fig. 18, the ends of the first and second power arms 81 and 82 form a socket tightening structure.

Taking the second force assist arm 82 as an example, the socket tensioning structure includes a guide slot 825 for guiding the socket force bearing shaft 102 and an arcuate track 826. When the connector 1 is mated with the receptacle 100, the booster tie 8 is rotated to a vertical position on the body 80, with the arcuate track 826 at the bottom end thereof such that the guide slots 825 align with the force bearing axes, such as the force bearing axes 102, on either side of the receptacle. The rod portion of the stress shaft 102 and the limit head enter the guide slot 825 together and slide into the arc-shaped track 826, at this time, the limit head of the stress shaft 102 is clamped on the outer side of the arc-shaped track 826, and the socket 100 is pulled to be closely butted with the connector along with the rotation force of the power-assisted pull rod 8.

Referring to fig. 15 and 16, the insert 2 includes a sheet 21, a secondary lock 22 is disposed at the front of the sheet 21, and a self-locking structure, a primary lock structure and a limiting structure are disposed at the rear of the sheet 21.

The self-locking structure includes a pair of top tongues disposed at the rear of the body 21, with the top tongue 24 being described as an example, and the other top tongue 26 being identical in structure. The top tongue 24 is provided with a limiting hook 241 at the end downwards, the top tongue 24 is inclined downwards by a first angle, and the first angle is set to ensure that the top tongue 24 can not freely slide in the travel channel after being unlocked by the first top block 13 and the second top block 16, and the top tongue 24 enters the travel channel to generate deformation force to keep the insert sheet. When the self-locking is performed, the insert 2 is retracted into the travel channel, the limit hook of the top tongue 24 falls into the first self-locking groove 833, the limit hook of the top tongue 26 falls into the second self-locking groove 835, and when the booster pull rod 8 lifts the socket 100 and rotates to be attached to the metal upper cover 12, the first top block 13 lifts the limit hook 241 from the first self-locking groove 833; the second ejector block 16 jacks up the corresponding limit hook from the second self-locking groove 835 to unlock the insert 2.

The primary lock structure at the rear of the insert 2 comprises a pressing tongue 23 arranged at the middle of two top tongues 24 and 26 at the rear end of the sheet 21. The pressing tongue 23 is provided with a first locking hook 231 at the end thereof facing upward, and the pressing tongue 23 is inclined upward at a second angle. When the latch is closed, the first locking hook 231 is locked at the front part of the cross beam 84 along with the pulling out of the insert 2, and the locking of the first locking hook 231 and the cross beam 84 can limit the backward movement of the insert 2.

Referring to fig. 18, in order to increase the feel of pulling out the tongue 23, a recess 842 is provided under the cross member 84, and a guide surface 843 is provided on the recess 842. When the insert 2 is self-locked, the pressing tongue 23 is connected to the first locking hook 231 and is tilted and attached to the recess 842 under the action of the second angle, and when the insert 2 is pulled, the first locking hook 231 is smoothly separated along the guiding surface 843 and makes a clicking sound when being buckled.

The sheet 21 is provided with a pair of limit tongues 25, 27 on the outer sides of the two top tongues 24, 26, and the limit tongues 25 are exemplified by the limit tongues 26 which have the same structure. The end of the limit tongue 25 is provided with a second outwardly extending latch hook 251. When locking, the second locking hook 251 is fastened on the end face of the corresponding sliding table, so as to limit the forward movement of the inserting piece. For example, the second latch hook 251 is fastened to the travel limiting surface 88 of the second slide table 86.

As shown in fig. 16, a guiding groove 215 is formed at the bottom of the other side of the insert 2, which is communicated with the sheet 21 and the secondary lock 22, the guiding groove 215 cooperates with a limiting block 831 of the mounting surface 83 to limit the sliding path of the insert 2 in the front-back direction of the body 80, a pair of sliding sheets 211 are provided at both ends of the sheet 21, the sliding sheets 211 are movably supported on the second sliding table 86, and the other sliding sheet is movably supported on the first sliding table 85.

When the power-assisted pull rod 8 rotates to be attached to the metal upper cover 12, the first ejector block 13 ejects the limiting hook 241, the second ejector block 16 ejects the limiting hook of the ejector tongue 26, and the self-locking structure of the insert 2 is released by the corresponding ejector block. The stopper hook 241 is deformed and received into the stroke path. At this time, the insert 2 is moved toward the lock seat, the second locking hook 251 moves forward and is fastened to the travel limiting surface 88 of the second sliding table 86, and at the same time, the first locking hook 231 of the insert 2 is smoothly disengaged along the guiding surface 843 and is abutted against the front portion of the cross beam 84, so as to realize a primary locking process of the insert and lock the pulling-out position of the secondary lock 22, and at the same time, the secondary lock 22 is inserted into the lock seat 14 to complete the secondary lock, thereby limiting the rotation of the booster pull rod 8.

The above embodiments are merely preferred embodiments of the present utility model, and the scope of the present utility model should not be limited thereto, so that the present utility model is covered by the following claims.

Claims (10)

1. A one-to-two fuse connector, comprising an insulating housing (4), a first power terminal (511) and a second power terminal (513), wherein the insulating housing is divided into an upper layer (E) and a lower layer (F), the interior of the insulating housing is divided into a first electrode cavity and a second electrode cavity by an insulating wall, the second electrode cavity surrounds the second electrode cavity, and the first power terminal (511) is electrically connected with a first conductive copper bar, extends from the upper layer to the lower layer in the first electrode cavity, and is connected to a first cable (C1) and a second cable (C2) in one-to-two; the second power terminal (513) is electrically connected with the second conductive copper bar, the upper layer of the second electrode cavity is detachably connected with the first fuse (55) and the second fuse (56), the output end of the first fuse is connected to the third cable (C3) on the lower layer in a turning mode, the output end of the second fuse is connected to the fourth cable (C4) on the lower layer in a turning mode, and the first power terminal (511) and the second power terminal (513) are arranged front and back along the output direction of the cables.

2. The one-to-two fuse connector of claim 1, wherein the first conductive copper bar comprises a Z-shaped bus bar (52), the first power terminal (511) and the Z-shaped bus bar (52) are fixedly connected by bolts, and the Z-shaped bus bar (52) is fixedly connected with the first cable (C1) and the second cable (C2); the second conductive copper bar comprises a bus bar (53), a first conductive terminal (57) and a second conductive terminal (58), wherein the second power terminal is fixedly connected with the second conductive copper bar through bolts, and the second conductive copper bar connecting elements are fixedly connected with each other through bolts.

3. The one-to-two fuse connector of claim 2, wherein the Z-shaped bus bar (52) includes a stepped body (520) fixed to a first electrode position (414) located at an upper layer, a first shunt terminal (521) fixed to a second electrode position (413) located at an upper layer, and a bus bar below which a mating space is formed, and the first and second conductive terminals (57, 58) each include a step-down (571, 581) and a connection end (572, 582) below which a nut fitting space is formed.

4. The one-to-two fuse connector of claim 2, wherein a first fuse clip (531) and a second fuse clip (535) are fixed to the bus bar (53), a third fuse clip (533) is fixed to the first conductive terminal (57), a fourth fuse clip (537) is fixed to the second conductive terminal (58), the first fuse (55) is detachably clamped between the first fuse clip (531) and the third fuse clip (533), and the second fuse (56) is detachably clamped between the second fuse clip (535) and the fourth fuse clip (537).

5. A one-to-two fuse connector in accordance with claim 3, wherein the first shunt terminal (521) is fixed to a first wire ear (591) by a bolt, the first wire ear being electrically connected to the first cable (C1); the second shunt terminal (522) is fixed with a second wire ear (592) by a bolt, the second wire ear being electrically connected to the second cable (C2); the connecting end (572) of the first conductive terminal is fixed with a third lug (593) through a bolt, and the third lug is electrically connected with the third cable (C3); the connecting end (582) of the second conductive terminal is fixed with a fourth lug (594) through a bolt, and the fourth lug is electrically connected with the fourth cable (C4); each wire lug is Z-shaped and comprises a wire lug step and a wire clamp, wherein the wire lug step and the wire clamp form a nut assembly space below the wire lug step.

6. The one-to-two fuse connector of claim 5, further comprising a metal shell (1) covering the insulating housing (4), wherein the insulating housing (4) is provided with four wire guides on a side wall, the metal shell is provided with a wire row clamping portion (17) and a wire row protection cover (3) buckled on the wire guides, the metal shell (1) is provided with a plugging portion (112) at the bottom, and the tail end of the plugging portion (112) is clamped with a plugging end cover (9).

7. A two-in-one fuse connector in accordance with claim 6, wherein a first seal ring (35) is provided between the line clamping portion (17) and the line protection cover (3); a second sealing ring (99) is arranged between the plug end cover (9) and the plug part (112); a groove (18) is formed around the top of the metal shell, and a third sealing ring (19) for sealing with the metal upper cover is arranged in the groove.

8. The one-to-two fuse connector of claim 6 wherein each cable is sleeved with a shield inner ring (62) in the row clamp (17) to support a shield web bent from the cable, an outer shield ring (61) being swaged onto the shield web, the outer shield ring (61) being mounted in the row clamp (17).

9. The one-to-two fuse connector of claim 6, wherein a plurality of spring slots (93) are formed in the peripheral wall of the plug end cover (9), an interlocking short-circuiting device (91) and a plug shielding sheet (95) are mounted inside the plug end cover (9), a yielding hole is formed in the middle of the plug shielding sheet (95), a plurality of shielding spring sheets (951) are formed on the peripheral edge, and each shielding spring sheet (951) passes through the corresponding spring slot (93) and abuts against the metal inner wall of the plug part.

10. The one-to-two fuse connector of claim 6, further comprising a secondary lock mechanism rotatably mounted on the metal housing, the metal housing being provided with a connecting shaft (15), the secondary lock mechanism comprising a power-assisted pull rod (8), the power-assisted pull rod comprising a body and a first power-assisted arm (81) and a second power-assisted arm (82) rotatably supported on the connecting shaft, top blocks (13, 16) and a lock seat (14) being provided on a locking surface of the metal housing (1), a plug piece (2) having a set stroke being slidably mounted in the middle of the body, the plug piece (2) comprising a self-locking structure, a primary lock structure and a secondary lock (22), the plug piece (2) being released from the self-locking structure by the top blocks (13, 16) when the power-assisted pull rod (8) is rotated into place, the plug piece (2) being locked out of position by the primary lock structure, while the secondary lock (22) being inserted into the lock seat (14) to complete the secondary lock to thereby restrict the rotation of the power-assisted pull rod (8).

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