CN109950756B

CN109950756B - Fuse assembly and sheath and connector thereof

Info

Publication number: CN109950756B
Application number: CN201711397767.2A
Authority: CN
Inventors: 应晨迪; 薛杨扬; 崔艳磊
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2017-12-21
Filing date: 2017-12-21
Publication date: 2021-06-04
Anticipated expiration: 2037-12-21
Also published as: CN109950756A

Abstract

The invention relates to a protective tube component, a protective sleeve and a connector thereof, wherein the protective sleeve of the protective tube component takes the direction of inserting the protective tube component into the connector as the front, the protective sleeve comprises an insulator, a protective tube installing part is arranged on the insulator, the protective sleeve also comprises an operating handle which is movably assembled on the insulator along the inserting direction in an anti-dropping way, an elastic piece for driving the operating handle to pop out of the insulator is arranged between the operating handle and the insulator in a jacking way, one of the insulator and the operating handle is provided with a lock tongue, the other one is provided with a lock groove which is matched with the lock tongue to limit the operating handle to pop out of the insulator, the lock tongue is provided with a holding part for human operation, the lock tongue and the lock groove are mutually separated by operating the lock tongue to realize the unlocking of the operating handle, when the operating handle pops out of the insulator under the acting force of the elastic piece, the structure is simpler, has the commonality, need not to rely on the instrument in installation and change process.

Description

Fuse assembly and sheath and connector thereof

Technical Field

The invention relates to a fuse assembly, a sheath thereof and a connector.

Background

If the external electrical appliance is too much, the general connector may cause the terminal wire or the electrical appliance to be burned due to the excessive power output of the power supply, thereby causing danger, therefore, many manufacturers start to manufacture the connector with the fuse, and when the external electrical appliance is too much and the connector reaches the power limit, the fuse in the connector will be burned first to prevent the terminal wire or the electrical appliance from being burned, thereby avoiding the danger.

The conventional connector with a fuse tube is generally designed to form a fuse tube assembly by sleeving a sheath on the outer side of the fuse tube, and after the fuse tube is burnt out, an operator can use a tool to automatically remove the sheath, and then remove, replace and install the fuse tube assembly. And current protective tube subassembly's mounting means, the general adoption realizes sheath and connector thread locking's mode, such assembly method processing cost is high, and is bulky, very waste time when installing the replacement protective tube subassembly, even do not adopt thread locking's mode a bit, need adopt the instrument to pull the sheath open or prize open just can realize getting of protective tube subassembly and unload, to the urgent need change the protective tube and the operator of instrument does not have again at hand, this kind of assembly method leads to a great deal of inconvenience, influence production availability factor.

Disclosure of Invention

The invention aims to provide a fuse assembly, which aims to solve the problem that the fuse assembly in the prior art needs tools for disassembly and replacement, so that the efficiency is low; it is also an object of the present invention to provide a connector using the fuse assembly; the invention also aims to provide a sheath of the fuse assembly.

In order to achieve the purpose, the technical scheme of the sheath of the fuse assembly is as follows:

scheme 1: the sheath of protective tube subassembly to its direction of inserting the connector is preceding, including the insulator, be provided with the protective tube installation department on the insulator, the sheath still includes along the movable anticreep operating handle of assembling on the insulator of grafting direction, the operating handle with the top is equipped with the elastic component that is used for driving the operating handle to emerge the insulator between the insulator, be provided with the spring bolt on one of them of insulator and operating handle, be equipped with on the other and cooperate and restrict the locked groove that the operating handle emerged the insulator with the spring bolt, the spring bolt has the control portion that supplies the people to operate.

Scheme 2: on the basis of the scheme 1, the lock tongue is arranged on the insulator.

Scheme 3: in addition to the above-mentioned means 2, the operating handle is provided with a bolt mounting hole for exposing the handle from the handle.

Scheme 4: on the basis of the scheme 1, a spring for applying acting force moving towards the lock groove direction to the lock tongue is arranged between the lock tongue and the operating handle in a propping mode.

Scheme 5: on the basis of any one of the schemes 1 to 4, the insulator is provided with an accommodating hole extending along the front-back direction, the operating handle is assembled in the accommodating hole in a guiding mode, the lock groove is formed in the side wall of the accommodating hole, and an avoiding groove used for avoiding the passing of the lock tongue is formed in one side, facing the lock groove, of the insulator.

Scheme 6: on the basis of the scheme 5, the lock tongue comprises a locking part which is matched with the lock groove in a blocking manner along the front-back direction, and the front end face of the locking part and/or the rear end face of the insulator are wedge-shaped guide faces which guide the locking part to be clamped into the lock groove when the operating handle is inserted into the insulator forwards.

The technical scheme of the fuse assembly is as follows:

scheme 7: the protective tube subassembly includes sheath and the protective tube of setting in the sheath to its direction of inserting the connector is preceding, the sheath includes the insulator, be provided with the protective tube installation department on the insulator, the sheath still includes along the movable anticreep operating handle of assembling on the insulator of grafting direction, the operating handle with the elastic component that is used for driving the operating handle to emerge the insulator is equipped with in the top between the insulator, be provided with the spring bolt on one of them of insulator and operating handle, be equipped with on another and restrict the locked groove that the operating handle emerged the insulator with the spring bolt cooperation, the spring bolt has the portion of controlling that supplies the people to operate.

Scheme 8: on the basis of the scheme 7, the lock tongue is arranged on the insulator.

Scheme 9: in addition to claim 8, the operating handle is provided with a bolt mounting hole for exposing the handle from the holding part.

Scheme 10: on the basis of the scheme 7, a spring for applying acting force moving towards the lock groove direction to the lock tongue is arranged between the lock tongue and the operating handle in a propping mode.

Scheme 11: on the basis of any one of the schemes 8 to 10, the insulator is provided with an accommodating hole extending along the front-rear direction, the operating handle is assembled in the accommodating hole in a guiding mode, the lock groove is formed in the side wall of the accommodating hole, and an avoiding groove used for avoiding the passing of the lock tongue is formed in one side, facing the lock groove, of the insulator.

Scheme 12: on the basis of the scheme 11, the lock tongue comprises a locking part which is matched with the lock groove in a blocking manner along the front-back direction, and the front end face of the locking part and/or the rear end face of the insulator are wedge-shaped guide faces which guide the locking part to be clamped into the lock groove when the operating handle is inserted into the insulator forwards.

The technical scheme of the connector is as follows:

scheme 13: the connector wears the protective tube subassembly of dress in the casing including casing and direction, and the protective tube subassembly includes the sheath and sets up the protective tube in the sheath to its direction of inserting the connector is preceding, and the sheath includes the insulator, be provided with the protective tube installation department on the insulator, the sheath still includes along the movable anticreep handle of assembling on the insulator of grafting direction, the handle with the top is equipped with the elastic component that is used for driving the handle to emerge the insulator between the insulator, be provided with the spring bolt on one of them of insulator and handle, be equipped with on another and restrict the handle to emerge the locked groove of insulator with the spring bolt cooperation, the spring bolt has the control portion that supplies the people to operate.

Scheme 14: on the basis of the scheme 13, the lock tongue is arranged on the insulator.

Scheme 15: in addition to claim 14, the operating handle is provided with a bolt mounting hole through which the grip portion is exposed from the operating handle.

Scheme 16: on the basis of the scheme 13, a spring for applying an acting force moving towards the lock groove to the lock tongue is arranged between the lock tongue and the operating handle in a propping mode.

Scheme 17: on the basis of any one of claims 13 to 16, the insulator is provided with an accommodating hole extending in the front-rear direction, the operating handle is guided and assembled in the accommodating hole, the lock groove is formed in a side wall of the accommodating hole, and an avoiding groove for avoiding the passing of the lock tongue is formed in one side, facing the lock groove, of the insulator.

Scheme 18: on the basis of the scheme 17, the lock tongue comprises a locking part which is matched with the lock groove in a blocking manner along the front-back direction, and the front end face of the locking part and/or the rear end face of the insulator are wedge-shaped guide faces which guide the locking part to be clamped into the lock groove when the operating handle is inserted into the insulator forwards.

The invention has the beneficial effects that: compared with the prior art, the sheath has the advantages that the operating handle is arranged on the insulator, when the fuse tube assembly is pushed into the connector, the operating handle is hidden on the insulator through manual pressing, the locking of the operating handle on the insulator is realized through the limiting locking matching between the lock tongue and the lock groove, and the compact structure of the sheath is ensured; when the protective tube needs to be replaced, through operating the spring bolt, make spring bolt and locked groove alternate segregation, realize the unblock to the operating handle, the operating handle emits outside the insulator this moment under the effort of elastic component, the manual work can pull out the operating handle, then extract the protective tube subassembly from the connector, the insulator can be avoided breaking away from each other between operating handle and the insulator with the anticreep cooperation between the operation and, guarantee the stability of subassembly operation, the easy operation is swift, moreover, the structure is simpler, and the universality is realized, need not with the help of the instrument at whole installation and change in-process.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a fuse assembly of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 showing the locking state of the pull rod and the insulator;

FIG. 4 is a schematic view of the assembly structure of the fuse assembly and the connector housing of the present invention;

fig. 5 is a schematic view of the fuse assembly of the present invention in a pulled-out state from the connector housing.

Detailed Description

An embodiment of the fuse assembly of the present invention, as shown in fig. 1 to 3, is installed in a connector, and mainly includes a fuse tube 4 and a sheath for accommodating the fuse tube 4, in this embodiment, the fuse tube is inserted into a connector housing along an axial direction thereof, and the corresponding sheath is an elongated structure.

In the case of the boot, which includes the insulator 1, the insulator 1 is in the form of an elongated plate, and as shown in fig. 2, the end of the boot inserted into the connector housing is taken as a front end, and in this embodiment, the front end of the insulator 1 is provided with a receiving groove extending in the front-rear direction for receiving and fixing the fuse tube 4, and the fuse tube 4 is fixed in the receiving groove. Meanwhile, the rear end of the insulator 1 is further provided with a containing hole 12 extending in the front-rear direction, and the containing hole 12 is a blind hole structure with an open rear end and a closed front end. The pull rod 2 penetrates through the accommodating hole 12, the pull rod 2 forms an operating handle for operation by a person, the pull rod 2 can move back and forth in the accommodating hole 12, and the length of the pull rod 2 is smaller than that of the accommodating hole 12, so that the pull rod 2 can be completely hidden in the insulator 1, and the sheath structure is compact. A pressure spring 5 is arranged between the front end wall of the accommodating hole 12 and the front end of the pull rod 2 in a pressing mode, the pull rod 2 can be ejected backwards out of the rear end of the insulator 1 through the pressure spring 5, and in the actual operation process, the pull rod 2 can be pulled manually, so that the whole fuse assembly is pulled out of the connector shell.

Meanwhile, in order to prevent the insulator 1 from being relatively separated from the pull rod 2 due to the elastic force after the pull rod 2 is ejected out of the insulator 1 by the compression spring 5, in the present embodiment, a limit stop structure for limiting the rear limit position of the pull rod 2 is provided in the receiving hole 12, specifically, a long guide hole 11 extending in the front-rear direction is provided on a hole side wall of the receiving hole 12, a stopper pin 21 is correspondingly provided on the pull rod 2, and the stopper pin 21 is inserted into the long guide hole 11, so that the rearward movement limit position of the pull rod 2 can be ensured through the relative guiding engagement between the long guide hole 11 and the stopper pin 21. In the actual operation process, the pressure spring 5 pushes the pull rod 2 to move backwards, and when the pull rod is pulled manually, the stop pin 21 is in stop fit with the front end of the guide long hole 11, so that the insulator 1 can be pulled through the pull rod 2, and the whole pipeline pipe assembly is pulled out.

In order to ensure the compact appearance and structure of the connector in the actual assembly process due to the existence of the compression spring 5, the pull rod 2 needs to be hidden in the connector housing, in this embodiment, the rear end of the connector housing is substantially flush with the rear end of the insulator 1, so the pull rod 2 needs to be hidden in the accommodating hole 12 of the insulator 1, and due to the existence of the acting force of the compression spring 5, the pull rod 2 cannot be automatically hidden in the insulator 1 forward, so the pull rod 2 is further provided with a limit locking structure for locking the pull rod 2 in the accommodating hole 12, as shown in fig. 2, specifically, a mounting hole 22 extending in the front-back direction is provided on the rear end surface of the pull rod 2, a avoiding hole 23 is correspondingly provided on the side wall of the mounting hole 22, and a locking groove 13 is provided on the side wall of the accommodating hole 12 corresponding to the avoiding hole 23, the locking tongue 3 is movably assembled in the mounting hole 22, this spring bolt 3's one end that corresponds keyway 13 can pass dodge hole 23 and insert to the keyway 13 in, and dodge hole 23 and keyway 13's position this moment and just satisfy pull rod 2 and hide in insulator 1, simultaneously, in order to make things convenient for the automatic locking between pull rod 2 and the insulator 1, in this embodiment, the roof pressure is provided with the spring that is used for applying the effort that dodges hole 23 and remove towards spring bolt 3 between foretell spring bolt 3 and the pull rod 2, thereby can be after pushing into accommodation hole 12 with pull rod 2, spring bolt 3 receives spring effort can insert forward automatically to the keyway 13 in. Meanwhile, in the present embodiment, the front end surface of the latch tongue 3 is a wedge-shaped guide surface 31 for guiding the latch tongue 3 to be inserted into the lock groove 13. In the process of pushing the pull rod 2 into the accommodating hole 12, the wedge-shaped guide surface 31 is arranged to enable the bolt 3 to be pushed by the side wall of the accommodating hole 12 to retract into the avoiding hole 23, and then when the avoiding hole 23 is opposite to the lock groove 13, the bolt 3 automatically returns to the original position under the pushing force of the spring, namely, is blocked in the lock groove 13, so that the pull rod 2 is locked in the insulator 1.

When the pull rod 2 needs to be pulled out of the accommodating hole 12, the bolt 3 is only needed to be pulled by a hand in a direction away from the lock groove 13, the bolt 3 is withdrawn from the lock groove 13, and at the moment, the pull rod 2 can be ejected out of the insulator 1 under the action of the pressure spring 5. Simultaneously, for can be convenient dial out spring bolt 3, the rear end face protrusion in the rear end face of pull rod 2 of spring bolt 3, and be provided with anti-skidding line 32 on the rear end face of spring bolt 3.

In the using process, as shown in fig. 4 and 5, the pull rod 2 can be pressed forward along the front-back direction, the side wall of the accommodating hole 12 pushes the bolt 3 to retract, then the bolt is inserted into the locking groove 13 to realize the limiting locking of the pull rod 2, and then the rod fuse assembly is inserted into the connector housing 6; when needing to pull out the fuse assembly, stir spring bolt 3 along the perpendicular to fore-and-aft direction, realize the unblock of pull rod 2, pull rod 2 kick-backs out the rear end of insulator 1 under the effect of pressure spring 5 after the unblock, then hold pull rod 2 through the manual work, with pull rod 2 pulling backward, drive whole fuse assembly and break away from in connector housing 6.

In other embodiments, the guide long hole 11 may be replaced by a guide groove; the stop pin 21 may be provided in the receiving hole 12, and the guide elongated hole 11 may be provided in the tie rod 2; the pressure spring 5 can also be replaced by other materials with large elastic deformation, such as a tension spring, rubber and the like; the guide surface may be provided on the rear end surface of the accommodation hole 12 of the insulator 1; the lock tongue can be directly assembled on the insulator, and the lock groove is arranged on the pull rod.

The construction of the sheath of the embodiments of the present invention is identical to that of the sheath of the embodiments of the fuse assembly described above and will not be expanded in detail.

The embodiment of the connector according to the invention, which comprises a connector housing and a fuse assembly, is identical in structure to the embodiment of the fuse assembly described above and will not be described in detail.

Claims

1. The sheath of protective tube subassembly is preceding with its direction of inserting the connector, including the insulator, be provided with the protective tube installation department on the insulator, its characterized in that: the sheath still includes the handle of follow the activity anticreep of grafting direction and assemble on the insulator, be provided with the spring bolt on one of insulator and handle, be equipped with on another and restrict the handle and emit the locked groove of insulator with the spring bolt cooperation, the spring bolt has the handle portion that supplies the people operation, the spring bolt sets up on the handle, be provided with on the handle and supply to handle the spring bolt mounting hole that the portion exposes the handle, the rear end face protrusion in the handle of spring bolt, the top is equipped with and is used for applying the spring of the effort that moves towards the locked groove direction to the spring bolt between spring bolt and the handle, be equipped with the accommodation hole that extends along the fore-and-aft direction on the insulator, the handle direction is assembled in the accommodation hole, the locked groove sets up on the lateral wall of accommodation hole, above the handle to one side of locked groove is provided with and is used for dodging the hole of dodging that the, one end of the lock tongue, corresponding to the lock groove, can penetrate through the avoidance hole and be inserted into the lock groove, a pressure spring is arranged between the front end wall of the accommodating hole and the front end of the operating handle in a pressing mode, the operating handle can be ejected backwards to the rear end of the insulator through the pressure spring, the front end of the insulator is provided with an accommodating groove which extends in the front-back direction and is used for accommodating and fixing the fuse tube, the accommodating hole is formed in the rear end of the insulator, the pull rod forms the operating handle for people to operate, in the using process, the pull rod is pressed forwards in the front-back direction, the side wall of the accommodating hole pushes the lock tongue to retract, then the lock tongue is inserted into the lock groove, limiting and locking of the pull; when needs pull out the protective tube subassembly, stir the spring bolt along the perpendicular to fore-and-aft direction, realize the pull rod unblock, the pull rod kick-backs out the rear end of insulator under the effect of pressure spring behind the unblock, then grip the pull rod through the manual work, stimulate the pull rod backward, drive whole protective tube subassembly and break away from in the connector housing, be provided with the guide slot hole that the fore-and-aft direction extends on the hole lateral wall of accommodation hole, the correspondence is provided with the backing pin on the pull rod, the backing pin wears to adorn in the guide slot hole, thereby can pass through the relative guide cooperation between guide slot hole and the backing pin, guarantee the rearward movement extreme position of pull rod, the locked groove is staggered in the circumference of insulator with the guide slot hole and is.

2. The protective sheath of the fuse assembly of claim 1, wherein: the lock tongue comprises a locking part which is matched with the lock groove in a blocking mode along the front-back direction, and the front end face of the locking part and/or the rear end face of the insulator are wedge-shaped guide faces which guide the locking part to be clamped into the lock groove when the operating handle is inserted into the insulator forwards.

3. Fuse subassembly, including sheath and the fuse of setting in the sheath to its direction of inserting the connector is preceding, the sheath includes the insulator, be provided with fuse installation department on the insulator, its characterized in that: the sheath still includes the handle of follow the activity anticreep of grafting direction and assemble on the insulator, be provided with the spring bolt on one of insulator and handle, be equipped with on another and restrict the handle and emit the locked groove of insulator with the spring bolt cooperation, the spring bolt has the handle portion that supplies the people operation, the spring bolt sets up on the handle, be provided with on the handle and supply to handle the spring bolt mounting hole that the portion exposes the handle, the rear end face protrusion in the handle of spring bolt, the top is equipped with and is used for applying the spring of the effort that moves towards the locked groove direction to the spring bolt between spring bolt and the handle, be equipped with the accommodation hole that extends along the fore-and-aft direction on the insulator, the handle direction is assembled in the accommodation hole, the locked groove sets up on the lateral wall of accommodation hole, above the handle to one side of locked groove is provided with and is used for dodging the hole of dodging that the, one end of the lock tongue, corresponding to the lock groove, can penetrate through the avoidance hole and be inserted into the lock groove, a pressure spring is arranged between the front end wall of the accommodating hole and the front end of the operating handle in a pressing mode, the operating handle can be ejected backwards to the rear end of the insulator through the pressure spring, the front end of the insulator is provided with an accommodating groove which extends in the front-back direction and is used for accommodating and fixing the fuse tube, the accommodating hole is formed in the rear end of the insulator, the pull rod forms the operating handle for people to operate, in the using process, the pull rod is pressed forwards in the front-back direction, the side wall of the accommodating hole pushes the lock tongue to retract, then the lock tongue is inserted into the lock groove, limiting and locking of the pull; when needs pull out the protective tube subassembly, stir the spring bolt along the perpendicular to fore-and-aft direction, realize the pull rod unblock, the pull rod kick-backs out the rear end of insulator under the effect of pressure spring behind the unblock, then grip the pull rod through the manual work, stimulate the pull rod backward, drive whole protective tube subassembly and break away from in the connector housing, be provided with the guide slot hole that the fore-and-aft direction extends on the hole lateral wall of accommodation hole, the correspondence is provided with the backing pin on the pull rod, the backing pin wears to adorn in the guide slot hole, thereby can pass through the relative guide cooperation between guide slot hole and the backing pin, guarantee the rearward movement extreme position of pull rod, the locked groove is staggered in the circumference of insulator with the guide slot hole and is.

4. A fuse assembly as recited in claim 3, wherein: the lock tongue comprises a locking part which is matched with the lock groove in a blocking mode along the front-back direction, and the front end face of the locking part and/or the rear end face of the insulator are wedge-shaped guide faces which guide the locking part to be clamped into the lock groove when the operating handle is inserted into the insulator forwards.

5. The connector wears the fuse subassembly of dress in the casing including casing and direction, and the fuse subassembly includes the sheath and sets up the protective tube in the sheath to its direction of inserting the connector is preceding, and the sheath includes the insulator, be provided with the fuse installation department on the insulator, its characterized in that: the sheath still includes the handle of follow the activity anticreep of grafting direction and assemble on the insulator, be provided with the spring bolt on one of insulator and handle, be equipped with on another and restrict the handle and emit the locked groove of insulator with the spring bolt cooperation, the spring bolt has the handle that supplies people's operation, the spring bolt sets up on the handle, be provided with on the handle and supply to handle the spring bolt mounting hole that the handle exposes the handle, the spring bolt mounting hole sets up on the rear end face of handle, the top is equipped with and is used for applying the spring of the effort that moves towards the locked groove direction to the spring bolt between spring bolt and the handle, be equipped with the accommodation hole that extends along the fore-and-aft direction on the insulator, the handle direction is assembled in the accommodation hole, the locked groove sets up on the lateral wall of accommodation hole, above the handle to one side of locked groove is provided with and is used for dodging the hole of dod, one end of the lock tongue, corresponding to the lock groove, can penetrate through the avoidance hole and be inserted into the lock groove, a pressure spring is arranged between the front end wall of the accommodating hole and the front end of the operating handle in a pressing mode, the operating handle can be ejected backwards to the rear end of the insulator through the pressure spring, the front end of the insulator is provided with an accommodating groove which extends in the front-back direction and is used for accommodating and fixing the fuse tube, the accommodating hole is formed in the rear end of the insulator, the pull rod forms the operating handle for people to operate, in the using process, the pull rod is pressed forwards in the front-back direction, the side wall of the accommodating hole pushes the lock tongue to retract, then the lock tongue is inserted into the lock groove, limiting and locking of the pull; when needs pull out the protective tube subassembly, stir the spring bolt along the perpendicular to fore-and-aft direction, realize the pull rod unblock, the pull rod kick-backs out the rear end of insulator under the effect of pressure spring behind the unblock, then grip the pull rod through the manual work, stimulate the pull rod backward, drive whole protective tube subassembly and break away from in the connector housing, be provided with the guide slot hole that the fore-and-aft direction extends on the hole lateral wall of accommodation hole, the correspondence is provided with the backing pin on the pull rod, the backing pin wears to adorn in the guide slot hole, thereby can pass through the relative guide cooperation between guide slot hole and the backing pin, guarantee the rearward movement extreme position of pull rod, the locked groove is staggered in the circumference of insulator with the guide slot hole and is.

6. The connector of claim 5, wherein: the lock tongue comprises a locking part which is matched with the lock groove in a blocking mode along the front-back direction, and the front end face of the locking part and/or the rear end face of the insulator are wedge-shaped guide faces which guide the locking part to be clamped into the lock groove when the operating handle is inserted into the insulator forwards.