CN219936981U

CN219936981U - Plug-in fuse

Info

Publication number: CN219936981U
Application number: CN202321531861.3U
Authority: CN
Inventors: 张健; 吴建万; 温子松
Original assignee: Huizhou Darong Electronic Technology Co ltd
Current assignee: Huizhou Darong Electronic Technology Co ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-10-31
Anticipated expiration: 2033-06-15

Abstract

The utility model relates to the technical field of fuses, in particular to a plug-in type fuse which comprises a shell and two pins connected with the shell, wherein a fuse is arranged between the two pins, two sides of the shell are respectively provided with a containing part, and the pins are arranged in the containing parts in a penetrating way; the utility model discloses a fuse, which is characterized in that one end of the accommodating part, which is far away from the pins, is provided with a through hole, the baffle plate is used for shielding one end of the pins so as to avoid the problem of electric leakage caused by contact with an external cable or personnel, when the fuse needs to be detected and opened and closed, a user can insert two gauge pins of a universal meter into the through hole, the gauge pins can push the baffle plate to move until the baffle plate is inserted into the outer side of the pins, and at the moment, the gauge pins can be contacted with the pins so as to realize the on-off measurement of the two pins.

Description

Plug-in fuse

Technical Field

The utility model relates to the technical field of fuses, in particular to an insert type fuse.

Background

Plug-in fuses are widely used in printed circuit boards, and as electronic devices become miniaturized, their size is becoming smaller. The circuit is an electrical element which is arranged in a circuit and ensures the safe operation of the circuit. The fuse protects the electronic device from over-current and also prevents serious damage to the electronic device caused by internal faults.

Most of the current fuse structures comprise a casing, two pins and a fuse wire, wherein the fuse wire is arranged between the two pins, and the current fuse wire comprises a square shell and two pins, and the square shell is a ceramic shell as disclosed in Chinese patent publication No. CN 205282432U; the pins are flat pins, and the wider faces of the two flat pins are opposite; the bottom ends of the flat pins are trapezoidal with wide upper part and narrow lower part, so that the flat pins can be matched and inserted into sockets on the PCB board to form pluggable flat pins.

Because after the fuse is melted in the circuit short circuit, in order to realize the measurement of the fuse, two pins of the fuse are often measured to judge whether the fuse is good or not, and because the fuse is arranged on a circuit and the pins of the fuse are positioned on a PCB, the operation space is limited, and the measurement process is very inconvenient.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a plug-in fuse.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

designing a plug-in fuse, comprising a shell and two pins connected with the shell, wherein a fuse is arranged between the two pins, two sides of the shell are respectively provided with an accommodating part, and the pins are arranged in the accommodating parts in a penetrating way;

the pin is characterized in that one end of the containing part, which is far away from the pin, is provided with a through hole, one end of the pin is convexly leaked to the inner side of the through hole, and a protection component is arranged in the through hole and used for shielding the end part of the pin.

Furthermore, the protection component comprises a baffle, a through hole is formed in the middle of the baffle, one end of the pin can be inserted into the through hole, and an elastic piece is further arranged between the pin and the baffle.

Further, the elastic piece is a spring, one end of the pin is provided with a stage, and the spring is arranged between the baffles.

Further, the pin further comprises an extension part, wherein the extension part is used for being electrically connected with the end part of the pin.

Further, the extension part is an extension foot, the extension foot is a conductive piece, the tail end of the extension foot is provided with a ring boss, and the ring boss is in threaded connection with the through hole.

Further, the baffle is an insulating member.

The plug-in type fuse provided by the utility model has the beneficial effects that: according to the utility model, the baffle plate is used for shielding one end of the pin so as to avoid the problem of electric leakage caused by contact with an external cable or personnel, when the fuse needs to be detected and turned on and off, a user can insert two gauge pins of the universal meter into the through hole, the gauge pins can push the baffle plate to move until the baffle plate is inserted into the outer side of the pin, and at the moment, the gauge pins can be contacted with the pin so as to realize on-off measurement of the two pins.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a perspective view of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model at a receiving portion;

fig. 4 is an enlarged schematic view of the area a in fig. 3.

In the figure: 1. a housing; 11. a housing part; 2. pins; 3. a protective assembly; 31. a baffle; 32. a through hole; 33. an elastic member; 4. an extension member; 41. the ring is convex.

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.

Referring to fig. 1-4, an embodiment of the present utility model discloses a plug-in fuse, the fuse includes a housing 1 and two pins 2 connected to the housing 1, the pins 2 are conductive members for connecting to a PCB, a fuse is disposed between the two pins 2, two sides of the housing 1 are provided with a receiving portion 11, and the pins 2 are inserted into the receiving portion 11;

wherein, the holding portion 11 is far away from the one end of pin 2 is for having the through-hole, the one end of pin 2 protruding leak in the inboard of through-hole be provided with the protection component 3 in the through-hole, the protection component 3 is used for sheltering from the tip of pin 2.

In some embodiments, the protective component 3 includes a baffle 31, where the baffle 31 is in a ring structure, specifically, in embodiments of the present utility model, the baffle 31 is an insulating member, specifically, a rubber plate or a plastic plate;

the middle part of the baffle 31 is provided with a through hole 32, one end of the pin 2 can be inserted into the through hole 32, and an elastic piece 33 is arranged between the pin 2 and the baffle 31.

That is, the baffle 31 is used for shielding one end of the pin 2, so as to avoid the problem of electric leakage caused by contact with an external cable or personnel, when the fuse needs to be detected and opened and closed, a user can insert two gauge pins of the universal meter into the through hole, the gauge pins can push the baffle 31 to move until the baffle 31 is inserted into the outer side of the pin 2, and at the moment, the gauge pins can be contacted with the pin 2, so that the on-off measurement of the two pins 2 is realized, and compared with the mode of measuring the lower pin 2 in the prior art, the fuse is more convenient to measure, and the convenience of fuse measurement is effectively improved.

In more detail, in the embodiment of the present utility model, the elastic member 33 is a spring, and the spring is sleeved on the outer side of the pin 2, wherein a step is provided at one end of the pin 2, and the spring is disposed between the baffles 31.

On the basis of the above embodiment, the embodiment of the present utility model further includes an extension member 4, where the extension member 4 is used for electrically connecting with the end of the pin 2, and the design purpose of the extension member 4 is to extend the pin 2 outwards to a certain extent, so as to form a new pin 2, so that a user can expand and connect a new circuit, and the expansibility and applicability of the fuse are enhanced.

In the embodiment of the present utility model, the extension member 4 is an extension pin, and the extension pin is a conductive member, and may be specifically configured as a copper member or an aluminum member, and the tail end of the extension pin has a ring protrusion 41, where the ring protrusion 41 is in threaded connection with the through hole.

In summary, in the embodiment of the present utility model, the extending pin and the through hole may be screwed to abut against the baffle 31 to move until the annular protrusion 41 on the extending pin contacts the pin 2 to realize electrical conduction, and then other circuits may be connected to the extending pin to realize the expanding function, which is known by those skilled in the art, in order to ensure the safety of the fuse when the expanding function is not needed, the extending pin may be rotated to separate the extending pin from the through hole, and then the baffle 31 pops out under the driving of the spring to realize shielding protection on the through hole, thereby effectively improving the operation safety of the fuse.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. Plug-in fuse, including casing (1) and connect in two pins (2) of casing (1), be provided with the fuse between two pin (2), its characterized in that: two sides of the shell (1) are provided with a containing part (11), and the pins (2) are arranged in the containing part (11) in a penetrating way;

wherein, hold portion (11) keep away from the one end of pin (2) is for having the through-hole, the one end of pin (2) protruding leak in the inboard of through-hole be provided with protection component (3) in the through-hole, protection component (3) are used for to shelter from the tip of pin (2).

2. A plug-in fuse in accordance with claim 1, wherein: the protection component (3) comprises a baffle plate (31), a through hole (32) is formed in the middle of the baffle plate (31), one end of the pin (2) can be inserted into the through hole (32), and an elastic piece (33) is further arranged between the pin (2) and the baffle plate (31).

3. A plug-in fuse in accordance with claim 2, wherein: the elastic piece (33) is a spring, one end of the pin (2) is provided with a stage, and the spring is arranged between the baffles (31) and the stage.

4. A plug-in fuse in accordance with claim 2, wherein: the pin assembly further comprises an extension part (4), wherein the extension part (4) is used for being electrically connected with the end part of the pin (2).

5. A plug-in fuse in accordance with claim 4, wherein: the extension part (4) is an extension foot, the extension foot is a conductive piece, the tail end of the extension foot is provided with a ring boss (41), and the ring boss (41) is in threaded connection with the through hole.

6. A plug-in fuse according to any one of claims 2 to 5, wherein: the baffle (31) is an insulating member.