CN215834842U - Improved built-in fuse connector - Google Patents

Abstract

The utility model discloses an improved built-in fuse connector which comprises a fuse holder, a clamping seat, a clamping piece, a fuse, a connecting terminal and a connecting terminal, wherein the fuse holder is provided with a first connecting end and a second connecting end, the fuse holder is provided with a first accommodating cavity, the connecting terminal is installed in the first accommodating cavity, the clamping seat is provided with a first clamping end and a second clamping end, the clamping seat is provided with a second accommodating cavity, the connecting terminal is installed in the second accommodating cavity, the clamping seat is clamped at the second connecting end, the first accommodating cavity is communicated with the second accommodating cavity, the fuse is installed in the first accommodating cavity and the second accommodating cavity, and the fuse is connected with the connecting terminal and detachably connected with the clamping seat. This application connector combines together fuse and connector, realizes need not occupy great installation space to fuse quick replacement and installation, through set up joint spare in the joint seat, breaks away from the fuse in the fuse seat in step when guaranteeing to dismantle the joint seat, guarantees the security when dismantling.

Description

Improved built-in fuse connector

Technical Field

The utility model relates to the technical field of connectors, in particular to an improved built-in fuse connector.

Background

Connectors are the basic elements for electrical connections and signal transfer between devices, assemblies and components, systems and systems. In order to prevent the overload of current in the connector, a fuse is usually added to the connection line to increase the overload protection, thereby improving the safety of the line. Furthermore, the fuse is connected in series in the circuit, so that the artificial wiring error can be avoided when devices, components or systems are connected in series.

However, most of the existing connectors only have a connecting function and do not have an overload protection function, so that a fuse box needs to be connected in series in a connecting circuit. This results in a troublesome installation of at least two components, i.e., a connector and a fuse box, in the circuit when the circuit is installed. Moreover, the conventional fuse box has a large size and occupies a certain space. Because the connector is generally installed manually, the phenomenon that the fuse box is neglected to be installed by an installer can be caused by more component types, and then the installation line does not have overload protection, so that risks are caused.

In addition, the fuse is generally connected to a live line, so that equipment or a power supply needs to be shut down firstly during replacement to prevent an electric shock hazard from occurring when an operator replaces the fuse.

Therefore, in combination with the above-mentioned technical problems, a new technical solution is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a connector which is simple in structure, convenient to assemble and disassemble and small in size. Meanwhile, when the clamping seat and the fuse seat of the connector are separated by arranging the clamping piece in the clamping seat of the connector, the fuse can be separated along with the clamping seat, so that the circuit is broken, and the safety of the fuse disassembly and assembly is ensured.

In order to achieve the object of the utility model, the utility model provides an improved built-in fuse connector, which comprises a fuse holder, a clamping seat, a clamping piece, a fuse, a connecting terminal and a connecting terminal, wherein the fuse holder is respectively provided with a first connecting end and a second connecting end along the axial direction, a first accommodating cavity is arranged in the fuse holder, the first accommodating cavity respectively penetrates through the first connecting end and the second connecting end, the connecting terminal is arranged in the first accommodating cavity, the clamping seat is respectively provided with a first clamping end and a second clamping end along the axial direction, a second accommodating cavity is arranged in the clamping seat, the second accommodating cavity respectively penetrates through the first clamping end and the second clamping end, the connecting terminal is arranged in the second accommodating cavity, the clamping seat is clamped at the second connecting end of the fuse holder, and the first accommodating cavity is communicated with the second accommodating cavity, the fuse is installed first holding chamber with the second holding intracavity, the fuse respectively with binding post with connecting terminal connects, just the fuse passes through the joint spare with can dismantle the connection between the joint seat.

Furthermore, the joint seat sequentially comprises a first inserting portion, a contact portion and a second inserting portion along the axis direction, one end, away from the contact portion, of the first inserting portion is a first joint end, one end, away from the contact portion, of the second inserting portion is a second joint end, the outer diameter of the contact portion is larger than that of the first inserting portion and that of the second inserting portion, and the joint piece is detachably installed on the first inserting portion.

Further, the joint spare includes the joint main part, the joint main part is the tubulose, the axis direction of joint main part with the axis direction of joint seat is unanimous, the one end of joint main part axis direction has the first jack catch of a plurality of along the outside extension of axis direction, the outside of joint main part is provided with a plurality of second jack catch, the second jack catch with the orientation of first jack catch is the same, the joint spare is installed when first grafting portion is last, first jack catch is located the second holding intracavity, first grafting portion is located the second jack catch with between the joint main part, just the second jack catch with first grafting portion joint.

Furthermore, the inner wall of the first clamping jaw is provided with a first clamping protrusion.

Furthermore, a plurality of second clamping jaws are arranged at intervals along the circumferential direction of the clamping main body, the shapes of the second clamping jaws are matched with those of the first inserting-connecting parts, clamping holes are formed in the second clamping jaws, and second clamping protrusions are respectively arranged on the outer sides of the first inserting-connecting parts corresponding to the clamping holes.

Furthermore, the second clamping protrusion is designed to be an inclined plane along one end face of the first inserting portion in the circumferential direction, one end, far away from the abutting portion, of the first inserting portion extends outwards along the axis direction to form a plurality of limiting structures, and when the clamping piece is installed on the first inserting portion, the limiting structures are located between every two adjacent second clamping claws.

Furthermore, one side of the interference part, which faces the first insertion part, is provided with a plurality of third clamping jaws, the length direction of the third clamping jaws is consistent with the axial direction of the clamping seat, the clamping end of the third clamping jaws is consistent with the direction of the first clamping end of the clamping seat, and the plurality of third clamping jaws are arranged around the first insertion part; the butt joint portion is provided with a plurality of fourth jack catch towards one side of second grafting portion, the length direction of fourth jack catch with the axis direction of joint seat is unanimous, the joint end of fourth jack catch with the second joint end direction of joint seat is unanimous, a plurality of the fourth jack catch encircles the setting of second grafting portion.

Furthermore, the fuse holder sequentially comprises a first part and a second part along the axis direction, the diameter of the second part is larger than that of the first part, one end, far away from the second part, of the first part is a first connecting end, one end, far away from the first part, of the second part is a second connecting end, a clamping groove is formed in the position, corresponding to the third clamping jaw, of the second part, the length direction of the clamping groove is consistent with the axis direction of the fuse holder, the clamping groove penetrates through the second connecting end, and when the clamping holder is clamped at the second connecting end, the third clamping jaw is clamped with the clamping groove.

Furthermore, an unlocking through hole is formed in the second portion corresponding to the clamping groove, and the unlocking through hole is communicated with the clamping groove.

Further, the first part is provided with an external thread, and the external thread is close to the second part; the first part is provided with a plurality of heat dissipation through holes which are communicated with the first accommodating cavity; and a sealing structure is arranged on the first insertion part and/or the second insertion part.

Compared with the prior art, the improved built-in fuse connector has at least one or more of the following advantages:

(1) the improved built-in fuse connector is internally provided with the fuse, so that the complicated step of installing a fuse box on a circuit outside the connector can be omitted, the installation steps are simplified, the types of components carried by installers are reduced, the phenomena of fuse missing installation and the like caused by human errors are avoided, and the circuit is effectively protected;

(2) according to the improved built-in fuse connector, when the clamping seat and the fuse seat of the connector are separated by arranging the clamping piece in the clamping seat of the connector, a fuse can be separated along with the clamping seat, so that the circuit is broken, and the safety of the fuse in dismounting is ensured;

(3) according to the improved built-in fuse connector, quick-detachable connection modes such as buckle connection and the like are adopted among all parts, the connector is simple in structure, convenient to detach and low in manufacturing cost;

(4) the improved built-in fuse connector is compact in structure and small in size, and installation space can be saved;

(5) according to the improved built-in fuse connector, the fuse seat is provided with the thread structure, and the thread structure is matched with the nut and can be conveniently and detachably arranged on a panel type structure to be installed, such as a chassis shell and the like;

(6) when the improved built-in fuse connector is installed on a structure to be installed, the clamping seat can be completely externally arranged, so that a fuse can be conveniently installed or replaced without complicated steps such as opening a case and the like, and the convenience in use is greatly improved;

(7) the utility model provides an improved generation embeds fuse connector, it is provided with many places seal structure, and the security is connected in the installation leakproofness between inside and connector and other components and parts of multiplicable connector, assurance.

Drawings

FIG. 1 is an exploded view of a built-in fuse connector according to an embodiment of the present disclosure;

FIG. 2 is a schematic top view of a fuse connector according to an embodiment of the present disclosure;

FIG. 3 is a schematic front view of the internal fuse connector shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of the position A in FIG. 3;

FIGS. 5 and 6 are schematic structural views of a fuse holder provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a connection terminal provided in an embodiment of the present application;

fig. 8 and 9 are schematic structural views of a clamping seat provided in an embodiment of the present application;

fig. 10 is a schematic installation diagram of a clamping seat and a clamping member according to an embodiment of the present application;

fig. 11 and 12 are schematic structural views of a clamping member provided in an embodiment of the present application;

fig. 13 is a schematic structural diagram of a connection terminal provided in an embodiment of the present application;

fig. 14 is a schematic structural diagram of a ferrule provided in an embodiment of the present application.

Wherein, 1-a fuse holder, 11-a first connecting end, 12-a second connecting end, 13-a first accommodating cavity, 131-a first cavity, 132-a second cavity, 14-a first part, 141-an external thread, 142-a clamping hole, 143-a heat dissipation through hole, 15-a second part, 151-a clamping groove, 152-an unlocking through hole, 2-a clamping holder, 21-a first clamping end, 22-a second clamping end, 23-a second accommodating cavity, 231-a first accommodating cavity, 232-a second accommodating cavity, 24-a third clamping jaw, 25-a first inserting part, 251-a second clamping protrusion, 252-a limiting structure, 26-a contact part, 261-an annular protrusion structure, 27-a second inserting part, 28-a fourth clamping jaw and 29-a sealing structure, 3-a clamping piece, 31-a clamping body, 32-a first clamping jaw, 321-a first clamping protrusion, 33-a second clamping jaw, 331-a clamping hole, 4-a fuse, 5-a wiring terminal, 51-a wiring part, 52-a first elastic sleeve part, 521-a first elastic claw, 522-a clamping protrusion structure, 523-a touch structure, 6-a connecting terminal, 61-a second elastic sleeve part, 611-a second elastic claw, 62-a connecting part, 621-a salient point, 63-a clamping sleeve, 631-a clamping protrusion structure, 7-a sealing ring, 8-a nut and 9-a gasket.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the utility model, the following detailed description is given to the specific embodiments, structures, features and effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.

Examples

Referring to fig. 1 to 14, fig. 1 is an exploded schematic view of a built-in fuse connector according to an embodiment of the present disclosure; FIG. 2 is a schematic top view of a fuse connector according to an embodiment of the present disclosure; FIG. 3 is a schematic front view of the internal fuse connector shown in FIG. 2; FIG. 4 is a schematic cross-sectional view of the position A in FIG. 3; FIGS. 5 and 6 are schematic structural views of a fuse holder provided in an embodiment of the present application; fig. 7 is a schematic structural diagram of a connection terminal provided in an embodiment of the present application; fig. 8 and 9 are schematic structural views of a clamping seat provided in an embodiment of the present application; fig. 10 is a schematic installation diagram of a clamping seat and a clamping member according to an embodiment of the present application; fig. 11 and 12 are schematic structural views of a clamping member provided in an embodiment of the present application; fig. 13 is a schematic structural diagram of a connection terminal provided in an embodiment of the present application; fig. 14 is a schematic structural diagram of a ferrule provided in an embodiment of the present application.

The embodiment provides an improved built-in fuse connector, which includes a fuse holder 1, a clip holder 2, a clip member 3, a fuse 4, a connecting terminal 5 and a connecting terminal 6, as shown in fig. 1 to 4.

The fuse holder 1 has a first connection end 11 and a second connection end 12 in the axial direction, respectively, as shown in fig. 5 and 6. The fuse holder 1 is internally provided with a first accommodating cavity 13, and the first accommodating cavity 13 respectively penetrates through the first connecting end 11 and the second connecting end 12. The connecting terminal 5 is installed in the first accommodating cavity 13. The fuse holder 1 comprises a first portion 14 and a second portion 15 in the axial direction in this order. The diameter of the second part 15 is larger than that of the first part 14, the end of the first part 14 far away from the second part 15 is a first connecting end 11, and the end of the second part 15 far away from the first part 14 is a second connecting end 12. Further, the first accommodating cavity 13 sequentially includes a first cavity 131 and a second cavity 132 along the axial direction of the fuse holder 1, as shown in fig. 4. The first chamber 131 is far away from the second connection end 12, and the diameter of the first chamber 131 is larger than that of the second chamber 132, that is, a step-shaped structure is formed in the fuse holder 1 at a position close to the first connection end 11. The terminal 5 can be installed into the first cavity 131 from the first connection end 11 and is in snap-fit connection with the fuse holder 1.

Preferably, the connecting terminal 5 adopts a structure as shown in fig. 7. The terminal 5 includes a terminal portion 51 and a first elastic sleeve portion 52 in this order in the axial direction. When the connecting terminal 5 is installed in the first accommodating cavity 13, i.e. the first cavity 131, the connecting portion 51 faces the first connecting end 11, the first elastic sleeve portion 52 faces the second connecting end 12, and a step-shaped structure formed between the first cavity 131 and the second cavity 132 can limit the movement of the connecting terminal 5 towards the second connecting end 12, so as to prevent the connecting terminal 5 from being installed excessively. Further, a plurality of clamping holes 142 are formed in the side wall of the fuse holder 1, and the clamping holes 142 are communicated with the first chamber 131. The outer wall of the first elastic sleeve portion 52 is provided with a plurality of clamping convex structures 522, and the clamping convex structures 522 correspond to the clamping holes 142 one to one. When the connection terminal 5 is installed in the first chamber 131, the protruding structure 522 is connected to the corresponding connection hole 142. Preferably, as shown in fig. 7, the connection terminal 5 is provided with a U-shaped notch on each side of the first elastic sleeve portion 52, the notch faces away from the connection portion 51, and then the portion inside the U-shaped notch is bent to form a snap-convex structure 522 with certain elasticity. During installation, the wiring terminal 5 can be installed from the first connection end 11 to in the first cavity 131, the protruding structure 522 of card receives the extrusion deformation of the inner wall of the first cavity 131, until the free end of the protruding structure 522 of card enters into the corresponding clamping hole 142, the protruding structure 522 of card resumes to the initial state, the free end of the protruding structure 522 of card and the inner wall of the clamping hole 142 complete clamping, as shown in fig. 4, and then the wiring terminal 5 is restricted from moving towards the direction away from the second connection end 12, and the wiring terminal 5 is firmly installed in the first cavity 131. In practice, the wire connecting portion 51 of the wire connecting terminal 5 is to be connected to a cable.

In a further embodiment, the first elastic sleeve portion 52 is hollow tubular. One end of the first elastic sleeve part 52, which is far away from the wire connecting part 51, is provided with a plurality of first elastic claws 521, and the length direction of the first elastic claws 521 is consistent with the axial direction of the wire connecting terminal 5, as shown in fig. 7. A plurality of the first elastic claws 521 are distributed at intervals along the circumferential direction of the first elastic sleeve portion 52. In order to ensure the connection precision, in particular, the first elastic claw 521 may be designed to close up. Meanwhile, in order to allow the fuse 4 to be smoothly inserted, the free end of the first resilient claw 521 is slightly inclined outward. When the fuse 4 is installed in the first accommodating cavity 13 from the second connection end 12, the fuse 4 is inserted into the inner cavity of the first elastic sleeve portion 52, the first elastic claw 521 on the first elastic sleeve portion 52 is spread, and under the action of elastic resilience force, the inner wall of the first elastic claw 521 is tightly attached to the access element of the fuse 4, so that electrical connection is realized. Further, an abutting structure 523 is disposed in the first elastic sleeve portion 52. As shown in fig. 7, the interference structure 523 may also be formed by inward folding of the inner wall of the first elastic sleeve portion 52, as the protruding structure 522. When one end of the fuse 4 is installed in the inner cavity of the first elastic sleeve portion 52, one end of the fuse 4 can collide with the collision structure 523. Through setting up conflict structure 523 can play spacing effect on the one hand, on the other hand also can further with the access element of fuse 4 is connected, strengthens the connection stability of connector.

In a further embodiment, the first portion 14 is provided with an external thread 141, the external thread 141 being adjacent to the second portion 15. When mounting, the mating nut 8 can detachably mount the connector at a panel-like mounting-waiting position such as a cabinet case. The second part 15 is tightly attached to the surface to be installed to form limiting. Preferably, a gasket 9 can be additionally arranged on the second part 15 and the surface to be installed, so that the connector can be well protected and prevented from being damaged during installation. During installation, the second part 15 can be arranged outside the case and the like, so that in the use process, a user can conveniently assemble and disassemble the clamping seat 2, and the fuse 4 can be quickly replaced without disassembling the case and the like. To prevent the fuse holder 1 from rotating during installation, the external shape and design of the first portion 14, the specific shape may be determined according to the situation. Fig. 6 shows a platform structure on the first part 14, which is simpler to implement. In order to ensure the heat dissipation effect of the connector, a plurality of heat dissipation through holes 143 are formed on the first portion 14, and the heat dissipation through holes 143 are communicated with the first accommodating cavity 13. As shown in fig. 5 and 6, the heat dissipating through hole 143 is preferably a strip-shaped through hole, the heat dissipating through hole 143 corresponds to the fuse 4, and a length direction of the heat dissipating through hole 143 coincides with an axial direction of the fuse holder 1.

The engaging seat 2 has a first engaging end 21 and a second engaging end 22 in the axial direction, as shown in fig. 8 and 9. The bayonet socket 2 has a second receiving cavity 23 therein. The second accommodating cavity 23 penetrates through the first clamping end 21 and the second clamping end 22 respectively. The connection terminal 6 is mounted in the second receiving chamber 23. The clamping seat 2 is clamped at the second connecting end 12 of the fuse holder 1. The first accommodating chamber 13 communicates with the second accommodating chamber 23. The fuse 4 is installed in the first accommodation cavity 13 and the second accommodation cavity 23, and the fuse 4 is respectively connected with the connection terminal 5 and the connection terminal 6, as shown in fig. 4. That is, the connection elements at both ends of the fuse 4 are connected to the connection terminal 5 and the connection terminal 6, respectively. And the fuse 4 is detachably connected with the clamping seat 2 through the clamping piece 3.

The card connecting seat 2 includes a first inserting portion 25, an interference portion 26 and a second inserting portion 27 in order along the axial direction, as shown in fig. 8 and 9. The end of the first inserting portion 25 away from the abutting portion 26 is a first clamping end 21, and the end of the second inserting portion 27 away from the abutting portion 26 is a second clamping end 22. The outer diameter of the interference portion 26 is larger than the outer diameter of the first mating portion 25 and the outer diameter of the second mating portion 27. In order to save materials and prevent the deformation of the parts caused by the difference of cooling time due to the larger wall thickness of the position of the interference part 26 during the preparation, the material stealing processing is performed at the position of the interference part 26, so that an annular convex structure 261 is formed at the position, close to the first inserting part 25, outside the interference part 26. It should be appreciated that, in practice, it is equally feasible that the interference portion 26 does not steal material. In order to facilitate the disassembly, the inward concave design of the material stealing position of the abutting part 26 is convenient for an operator to disassemble and assemble the clamping seat 2 more conveniently. And the material stealing position surface of the interference part 26 is designed to be latticed, so that the surface friction force can be increased, and the clamping seat 2 is further facilitated to be disassembled and assembled by an operator.

The clip member 3 is detachably mounted on the first insertion part 25, as shown in fig. 10. The clamping piece 3 comprises a clamping main body 31, and the clamping main body 31 is tubular, as shown in fig. 11 and 12. The axial direction of the clamping main body 31 is consistent with the axial direction of the clamping seat 2. One end of the clamping main body 31 in the axis direction extends outwards along the axis direction to form a plurality of first clamping claws 32. In fig. 11 and 12, two first claws 32 are schematically shown, and the two first claws 32 are arranged oppositely. Of course, the number of the first claws 32 is not limited to two, and may be more. The inner wall of the first jaw 32 is provided with a first catching protrusion 321. Preferably, the first latch 321 is disposed near an end of the first claw 32 far from the clamping main body 31. The outside of joint main part 31 is provided with a plurality of second jack catch 33, second jack catch 33 with first jack catch 32's orientation is the same. A plurality of the second claws 33 are arranged at intervals along the circumferential direction of the clamping main body 31. When the clamping piece 3 is installed on the first inserting part 25, the first clamping jaw 32 is located in the second accommodating cavity 23, the first inserting part 25 is located between the second clamping jaw 33 and the clamping main body 31, and the second clamping jaw 33 is clamped with the first inserting part 25. In specific implementation, the shape of the second claw 33 is matched with the shape of the first insertion part 25, that is, the first insertion part 25 shown in fig. 8 is tubular, and the second claw 33 is designed to be arc-shaped, so that when the clamping member 3 is installed on the first insertion part 25, the second claw 33 can be just attached to the outer side of the first insertion part 25. In addition, it needs to be known that, in order to ensure that the clamping piece 3 can be smoothly clamped with the fuse 4, a certain interval is left between the first clamping jaw 32 and the second accommodating cavity 23 during design, so that the first clamping jaw 32 can be stressed and spread when the fuse 4 is installed.

A locking hole 331 is formed on the second jaw 33, and second locking protrusions 251 are respectively disposed at positions corresponding to the locking hole 331 on the outer side of the first inserting-connecting portion 25. An end surface of the second locking protrusion 251 in the circumferential direction of the first inserting portion 25 is designed to be an inclined surface, so that when the locking member 3 is rotated, the second jaw 33 can smoothly move onto the second locking protrusion 251. As shown in fig. 10, the locking member 3 is rotated clockwise as viewed in the figure to be in the unlocking direction, and therefore, the second locking projection 251 is formed as a slope on the left side as viewed in the figure, and the upper end of the slope is inclined toward the right. In order to ensure that the clamping piece 3 rotates more smoothly, the lower edge angle of the corresponding inclined plane on the second clamping jaw 33 can also adopt a chamfer design. Further, a plurality of limiting structures 252 extend outwards along the axial direction at one end of the first inserting-connecting part 25 away from the interference part 26, as shown in fig. 8. When the clamping member 3 is installed on the first inserting part 25, the limiting structure 252 is located between two adjacent second claws 33, as shown in fig. 10, and can play a role in limiting the clamping member 3.

In a further embodiment, the side of the interference portion 26 facing the first mating portion 25 is provided with a plurality of third claws 24. The length direction of the third clamping jaw 24 is consistent with the axial direction of the clamping seat 2, and the clamping end of the third clamping jaw 24 is consistent with the direction of the first clamping end 21 of the clamping seat 2. A number of said third claws 24 are arranged around said first plug part 25. A clamping groove 151 is formed in the second portion 15 at a position corresponding to the third jaw 24, and the length direction of the clamping groove 151 is consistent with the axial direction of the fuse holder 1, as shown in fig. 6. The clamping groove 151 penetrates through the second connecting end 12. When the clamping seat 2 is clamped to the second connecting end 12, the first inserting portion 25 is inserted into the first accommodating cavity 13, and the third clamping jaw 24 is clamped to the clamping groove 151. In order to be adapted to the first plug-in part 25, a third chamber is formed in the second receiving chamber 23 near the second connection end 12 for receiving the first plug-in part 25. Further, an unlocking through hole 152 is formed in a position of the second portion 15 corresponding to the card slot 151, and the unlocking through hole 152 is communicated with the card slot 151. Through the unlocking through hole 152, a user can unlock the third clamping jaw 24 and the clamping groove 151 by using a special tool, so that the clamping seat 2 can be taken down from the fuse seat 1, and the fuse 4 can be installed or replaced.

The side of the interference part 26 facing the second plug part 27 is provided with a plurality of fourth claws 28. The length direction of the fourth clamping jaw 28 is consistent with the axial direction of the clamping seat 2, the clamping end of the fourth clamping jaw 28 is consistent with the direction of the second clamping end 22 of the clamping seat 2, and the fourth clamping jaws 28 are arranged around the second inserting portion 27. Through the fourth jaw 28, the joint seat 2 can be connected with the line end connector in a clamped mode, and then circuit connection is achieved. Further, a sealing structure 29 is provided on the first plug part 25 and/or the second plug part 27. The installation leakproofness between inside and connector and other components and parts of connector can be increased through the cover and establish sealing ring 7, guarantees to connect safety.

The second receiving cavity 23 sequentially includes a first receiving cavity 231 and a second receiving cavity 232 along the axial direction of the bayonet socket 2, as shown in fig. 4. The first cavity 231 is far away from the second clamping end 22. The diameter of the first volume 231 is greater than the diameter of the second volume 232. So that a stepped structure is formed inside the second receiving chamber 23. The connection terminal 6 includes a second elastic sleeve portion 61 and a connection portion 62 in this order in the axial direction, as shown in fig. 13. The second elastic sleeve portion 61 has an outer diameter larger than that of the connecting portion 62. When the connection terminal 6 can be installed in the second receiving cavity 23 from the first clamping end 21, the second elastic sleeve portion 61 is located in the first receiving cavity 231, and the connection portion 62 is located in the second receiving cavity 232. The connecting portion 62 is connected with the engaging seat 2 by a snap fit. Preferably, a cutting sleeve 63 is sleeved at a position of the connecting portion 62 close to the second elastic sleeve portion 61, two sets of convex points 621 are arranged on the surface of the connecting portion 62 at intervals along the axial direction of the connecting terminal 6, and each set of convex points 621 is arranged along the connecting portion 62 at intervals along the circumferential direction. The cutting ferrule 63 is sleeved between the two sets of convex points 621. The two sets of bumps 621 restrict the movement of the ferrule 63 on the connecting portion 62 in the axial direction of the connection terminal 6. In accordance with the first ferrule portion 52 of the terminal 5, the side wall of the ferrule 63 may also be bent to obtain a snap projection 631, as shown in fig. 14. Wherein the free end of the snap projection 631 faces the second elastic sleeve portion 61. The inner wall of the second cavity 232 is provided with a clamping interface corresponding to the position of the clamping convex structure 631. When the connecting terminal 6 is installed, the ferrule 63 is firstly sleeved on the connecting portion 62 of the connecting terminal 6, and the direction of the free end of the convex structure 631 on the ferrule 63 faces the second elastic sleeve. Later will connecting terminal 6's connecting portion 62 certainly first joint end 21 inserts in proper order first appearance chamber 231 and second hold chamber 232, and insert extremely when the second holds intracavity 232, the protruding structure 631 of card receives the extrusion deformation that the second held the chamber 232 inner wall, until the protruding structure 631's of card free end enters into to corresponding joint in the mouth, protruding structure 631 of card resumes to initial condition, the protruding structure 631's of card free end with the joint is accomplished to the inner wall of joint mouth, and then the restriction connecting terminal 6 court first joint end 21 direction removes, binding post 5 is installed firmly in second holding chamber 23. In practice, the connection portion 62 of the connection terminal 6 is connected to the line terminal connector. Further, the second elastic sleeve part 61 is hollow and tubular, and one end of the second elastic sleeve part 61, which is far away from the connecting part 62, is provided with a plurality of second elastic claws 611. The length direction of the second elastic claw 611 coincides with the axial direction of the connection terminal 6. A plurality of the second elastic claws 611 are distributed at intervals along the circumferential direction of the second elastic sleeve portion 61, and when the fuse 4 is installed in the second accommodating cavity 23, the fuse 4 is inserted into the inner cavity of the second elastic sleeve portion 61 and is electrically connected with the second elastic claws 611. Also, in order to ensure the connection precision, the second elastic clamping claw can be designed to be closed in practical application. Meanwhile, in order to allow the fuse 4 to be smoothly inserted, the free ends of the second resilient claws 611 are slightly inclined outward. When the fuse 4 is installed in the second accommodating cavity 23 from the first clamping end 21, the fuse 4 is inserted into the inner cavity of the second elastic sleeve part 61, the second elastic claw 611 on the second elastic sleeve part 61 is spread, and under the action of elastic resilience force, the inner wall of the second elastic claw 611 is tightly attached to the access element of the fuse 4, so that electrical connection is realized.

The working principle of the connector provided by the embodiment is as follows:

first, the conventional fuse 4 is provided with an access member for electrical connection at both ends in the axial direction, respectively, and the diameter thereof is larger than that of the main body of the fuse 4, so that a stepped structure is formed at the end.

When the connector of this embodiment is used, firstly, the connecting terminal 5 and the connecting terminal 6 are respectively installed in the fuse holder 1 and the clamping holder 2, then the clamping piece 3 is installed on the first inserting portion 25 of the clamping holder 2, and the clamping hole 331 of the second clamping jaw 33 of the clamping piece 3 is clamped with the first clamping protrusion 321 of the first inserting portion 25. And then, one end of the fuse 4 penetrates through the inner cavity of the main body of the clamping piece 3 until an access element at one end of the fuse 4 penetrates through a first clamping protrusion 321 on the inner wall of a first clamping jaw 32 of the clamping piece 3, the first clamping jaw 32 is restored to an initial state, the access element at one end of the fuse 4 is limited by the first clamping protrusion 321, and at the moment, the fuse 4 is electrically connected with the connecting terminal 6. Then the other end of the fuse 4 is inserted into the fuse holder 1 until the clamping connection seat 2 and the fuse holder 1 are clamped, and the connecting terminal 5 is electrically connected.

When the fuse 4 is replaced, the clamping seat 2 is unlocked from the fuse seat 1 by using a special tool, the fuse 4 is separated from the fuse seat 1 under the limit of the clamping seat 2, then the clamping piece 3 is rotated, the second clamping jaw 33 of the clamping piece 3 is moved to the first clamping projection 321 on the first insertion part 25, the clamping piece 3 is unlocked from the clamping seat 2, the clamping piece 3 and the fuse 4 can be separated from the clamping seat 2, and then the fuse 4 is taken down from the clamping piece 3, so that the fuse 4 can be detached.

Compared with the prior art, the improved built-in fuse connector has at least one or more of the following advantages:

(1) the improved built-in fuse connector is internally provided with the fuse, so that the complicated step of installing a fuse box on a circuit outside the connector can be omitted, the installation steps are simplified, the types of components carried by installers are reduced, the phenomena of fuse missing installation and the like caused by human errors are avoided, and the circuit is effectively protected;

(2) according to the improved built-in fuse connector, when the clamping seat and the fuse seat of the connector are separated by arranging the clamping piece in the clamping seat of the connector, a fuse can be separated along with the clamping seat, so that the circuit is broken, and the safety of the fuse in dismounting is ensured;

(3) according to the improved built-in fuse connector, quick-detachable connection modes such as buckle connection and the like are adopted among all parts, the connector is simple in structure, convenient to detach and low in manufacturing cost;

(4) the improved built-in fuse connector is compact in structure and small in size, and installation space can be saved;

(5) according to the improved built-in fuse connector, the fuse seat is provided with the thread structure, and the thread structure is matched with the nut and can be conveniently and detachably arranged on a panel type structure to be installed, such as a chassis shell and the like;

(6) when the improved built-in fuse connector is installed on a structure to be installed, the clamping seat can be completely externally arranged, so that a fuse can be conveniently installed or replaced without complicated steps such as opening a case and the like, and the convenience in use is greatly improved;

(7) the utility model provides an improved generation embeds fuse connector, it is provided with many places seal structure, and the security is connected in the installation leakproofness between inside and connector and other components and parts of multiplicable connector, assurance.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. An improved built-in fuse connector is characterized by comprising a fuse holder (1), a clamping holder (2), a clamping piece (3), a fuse (4), a wiring terminal (5) and a connecting terminal (6), wherein the fuse holder (1) is respectively provided with a first connecting end (11) and a second connecting end (12) along an axis direction, a first accommodating cavity (13) is arranged in the fuse holder (1), the first accommodating cavity (13) respectively penetrates through the first connecting end (11) and the second connecting end (12), the wiring terminal (5) is installed in the first accommodating cavity (13), the clamping holder (2) is respectively provided with a first clamping end (21) and a second clamping end (22) along the axis direction, a second accommodating cavity (23) is arranged in the clamping holder (2), and the second accommodating cavity (23) respectively penetrates through the first clamping end (21) and the second clamping end (22), connecting terminal (6) are installed in second holding chamber (23), joint seat (2) joint is in second link (12) of fuse seat (1), first holding chamber (13) with second holding chamber (23) intercommunication, fuse (4) are installed first holding chamber (13) with in second holding chamber (23), fuse (4) respectively with binding post (5) with connecting terminal (6) are connected, just fuse (4) pass through joint spare (3) with can dismantle the connection between joint seat (2).

2. The improved built-in fuse connector as recited in claim 1, wherein the clamping seat (2) comprises a first inserting portion (25), an abutting portion (26) and a second inserting portion (27) in sequence along an axial direction, one end of the first inserting portion (25) far away from the abutting portion (26) is a first clamping end (21), one end of the second inserting portion (27) far away from the abutting portion (26) is a second clamping end (22), the outer diameter of the abutting portion (26) is larger than that of the first inserting portion (25) and that of the second inserting portion (27), and the clamping member (3) is detachably mounted on the first inserting portion (25).

3. The improved built-in fuse connector as recited in claim 2, characterized in that the clip (3) comprises a clip main body (31), the clip main body (31) is tubular, the axial direction of the clip main body (31) is consistent with the axial direction of the clip base (2), one end of the clip main body (31) in the axial direction extends outwards along the axial direction to form a plurality of first claws (32), the outer side of the clip main body (31) is provided with a plurality of second claws (33), the second claws (33) are in the same direction as the first claws (32), when the clip (3) is mounted on the first plug part (25), the first claws (32) are located in the second receiving cavity (23), the first plug part (25) is located between the second claws (33) and the clip main body (31), and the second clamping jaw (33) is clamped with the first inserting part (25).

4. An improved built-in fuse connector as claimed in claim 3, characterized in that the inner wall of the first jaw (32) is provided with a first snap projection (321).

5. The improved built-in fuse connector as recited in claim 3, wherein a plurality of second claws (33) are arranged at intervals along the circumferential direction of the clamping main body (31), the shapes of the second claws (33) are matched with the shape of the first inserting part (25), clamping holes (331) are formed in the second claws (33), and second clamping protrusions (251) are respectively arranged on the outer sides of the first inserting parts (25) at positions corresponding to the clamping holes (331).

6. The improved built-in fuse connector as recited in claim 5, wherein an end surface of the second locking projection (251) along the circumferential direction of the first insertion part (25) is designed as an inclined surface, a plurality of limiting structures (252) extend outwards along the axial direction from one end of the first insertion part (25) far away from the interference part (26), and when the locking member (3) is installed on the first insertion part (25), the limiting structures (252) are located between two adjacent second locking claws (33).

7. The improved built-in fuse connector as recited in claim 2, characterized in that a plurality of third claws (24) are arranged on one side of the interference part (26) facing the first plug part (25), the length direction of the third claws (24) is consistent with the axial direction of the clamping seat (2), the clamping end of the third claws (24) is consistent with the direction of the first clamping end (21) of the clamping seat (2), and a plurality of the third claws (24) are arranged around the first plug part (25);

the butt joint part (26) is provided with a plurality of fourth jack catchs (28) towards one side of second grafting portion (27), the length direction of fourth jack catch (28) with the axis direction of joint seat (2) is unanimous, the joint end of fourth jack catch (28) with second joint end (22) direction of joint seat (2) is unanimous, a plurality of fourth jack catch (28) encircle second grafting portion (27) sets up.

8. The improved built-in fuse connector as recited in claim 7, wherein the fuse holder (1) comprises a first portion (14) and a second portion (15) in sequence along an axial direction, the diameter of the second portion (15) is larger than that of the first portion (14), one end of the first portion (14) far away from the second portion (15) is a first connecting end (11), one end of the second portion (15) far away from the first portion (14) is a second connecting end (12), a position of the second portion (15) corresponding to the third claw (24) is provided with a slot (151), a length direction of the slot (151) is consistent with the axial direction of the fuse holder (1), the slot (151) penetrates through the second connecting end (12), when the socket (2) is clamped at the second connecting end (12), the third clamping claw (24) is clamped with the clamping groove (151).

9. The improved built-in fuse connector as recited in claim 8, characterized in that the second portion (15) is provided with an unlocking through hole (152) at a position corresponding to the card slot (151), the unlocking through hole (152) being communicated with the card slot (151).

10. The improved internal fuse connector as recited in claim 8, characterised in that the first section (14) is provided with an external thread (141), the external thread (141) being adjacent to the second section (15);

the first part (14) is provided with a plurality of heat dissipation through holes (143), and the heat dissipation through holes (143) are communicated with the first accommodating cavity (13);

the first plug-in part (25) and/or the second plug-in part (27) is/are provided with a sealing structure (29).

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