CN219832549U

CN219832549U - Fuse protector

Info

Publication number: CN219832549U
Application number: CN202321072772.7U
Authority: CN
Inventors: 陈永; 徐伟东; 余苏钢
Original assignee: Zhejiang Fullwill Electric Co ltd
Current assignee: Zhejiang Fullwill Electric Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-10-13
Anticipated expiration: 2033-05-06

Abstract

The utility model provides a fuse, which belongs to the technical field of fuses and comprises a shell, a mounting seat rotatably arranged in the shell and two electric connection components arranged in the shell, wherein a fuse body is arranged in the mounting seat, the mounting seat is provided with a first position for disassembling the fuse body and a second position for enabling the fuse body in the mounting seat to be respectively connected with the two electric connection components when rotating relative to the shell, the mounting seat comprises a hinge part, an operation part and a mounting cavity, the mounting cavity comprises an insertion port for inserting the fuse body, a limiting arm extends into the insertion port, and the tail end of the limiting arm is arc-shaped and is in contact with the end face of the fuse body. According to the utility model, the limiting arm is arranged at the inserting port of the mounting cavity, so that the fuse body can be prevented from flying out of the mounting cavity when the mounting seat rotates from the first position to the second position, the safety of the fuse is improved, and the dismounting efficiency is improved.

Description

Fuse protector

Technical Field

The utility model relates to the technical field of fuses, in particular to a fuse.

Background

A fuse (fuse) is an electric appliance that fuses a melt by heat generated by itself when a current exceeds a predetermined value, and opens a circuit. The fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so that the circuit is disconnected; a current protector is made by applying the principle. The fuse is widely applied to high-low voltage distribution systems, control systems and electric equipment, is used as a protector for short circuit and overcurrent, and is one of the most common protection devices.

In the prior art, as disclosed in chinese patent publication No. CN 108597971B, a switch-type fuse is disclosed, which comprises a housing and two electrical connection components located at two ends in the housing, a mounting seat rotationally connected with the housing is installed in the middle part of the housing, a fuse link is installed in the mounting seat, when the mounting seat is buckled on the housing, two ends of the fuse link are respectively connected with the two electrical connection components, when the mounting seat is rotated out of the housing, the fuse link flies out from the mounting seat due to inertia, so that the dismounting efficiency is reduced, and a safety accident is caused.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings of the prior art and provides a fuse which can prevent a fuse body from flying out when a mounting seat is opened.

The technical scheme adopted by the utility model is as follows: the utility model provides a fuse, is including the casing, rotate set up in the mount pad of casing and set up two electrical connection components in the casing, be provided with the fuse-link in the mount pad, the mount pad has the first position of dismantled and assembled fuse-link and lets its interior fuse-link be connected with two electrical connection components's second position respectively when casing rotates relatively, the mount pad is including articulated portion, operating portion and installation cavity, the installation cavity is including being used for supplying fuse-link male inserted mouth, the mount pad extends in the inserted mouth has spacing arm, the terminal of spacing arm is arc and inconsistent with the terminal surface of fuse-link.

The upper and lower parts of the inner wall of the installation cavity, which is close to one side of the hinge part, are respectively provided with a first limiting block and a second limiting block.

The opposite side of the insertion port opposite to the limiting arm is provided with a guide arm, and the end face of the guide arm facing the insertion port is an arc-shaped face.

The installation cavity outer wall is provided with the rotation stopper, be provided with the rotation spacing post on the motion trail of rotation stopper in the casing.

The electric connection assembly comprises a wiring terminal and conductive sheets electrically connected with the wiring terminal, wherein the two conductive sheets respectively extend to two sides of the installation cavity and can be electrically connected with the fuse link when the installation seat is in the second position.

The conducting strip is including the clamping part that is located installation cavity department, the conducting part of being connected with binding post electricity and be fixed in the fixed part of casing, the clamping part is including two elasticity centre gripping arms, the elasticity centre gripping arm end sets up the guide surface, and its inner wall is provided with the arc sunken with fuse-link adaptation.

The clamping groove is formed in one side, far away from the clamping part, of the fixing part, a U-shaped clamping spring is arranged in the clamping groove, and two extension arms of the U-shaped clamping spring are respectively abutted to the outer end faces of the two elastic clamping arms.

The outer terminal surface of elasticity centre gripping arm is provided with the spacing arch with the extension arm looks adaptation of U-shaped jump ring.

The shell is internally provided with a limiting groove, and the fixing part is embedded in the limiting groove.

The shell is provided with vent holes at positions corresponding to the wiring terminals and the mounting seats.

The beneficial effects of the utility model are as follows: according to the utility model, the limiting arm is arranged at the inserting port of the mounting cavity, so that the fuse body can be prevented from flying out of the mounting cavity when the mounting seat rotates from the first position to the second position, the safety of the fuse is improved, and the dismounting efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic diagram of the present utility model;

FIG. 2 is a schematic view of a housing and a mounting base according to the present utility model;

FIG. 3 is a second schematic diagram of the present utility model;

FIG. 4 is a schematic view of a fuse link and electrical connection assembly of the present utility model;

FIG. 5 is a schematic view of a conductive sheet according to the present utility model;

in the figure, 1-shell, 101-rotation limit column, 102-limit groove, 103-vent hole, 2-mount, 21-hinge part, 22-operation part, 23-installation cavity, 231-insertion opening, 232-first limit block, 233-second limit block, 234-guide arm, 235-rotation limit block, 3-electric connection component, 4-fuse link, 5-limit arm, 6-wiring terminal, 7-conductive sheet, 71-clamping part, 711-elastic clamping arm, 712-guide surface, 713-arc recess, 714-limit protrusion, 72-conductive part, 73-fixing part, 731-clamping groove, 74-U-shaped clamp spring, 741-extension arm.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 5, an embodiment of the present utility model is provided:

the utility model provides a fuse, is including casing 1, rotation setting in the mount pad 2 of casing 1 and set up in two electric connection components 3 in casing 1, be provided with fuse-link 4 in the mount pad 2, have the first position of dismantled and assembled fuse-link 4 and let the second position that fuse-link 4 in it is connected with two electric connection components 3 respectively when the relative casing 1 rotation of mount pad 2, mount pad 2 is located casing 1 outside when first position, and mount pad 2 lock in casing 1 when the second position, mount pad 2 is including articulated portion 21, operating portion 22 and installation cavity 23, and operating portion 22 is including the pressure terminal surface that supplies the finger to be provided with the sand grip at the pressure terminal surface, increase the frictional force when contacting with the finger, installation cavity 23 is including being used for supplying fuse-link 4 male inserted slot 231, mount pad 2 is towards inserted slot 231 in stretch spacing arm 5, the terminal end of spacing arm 5 be arc and with fuse-link 4's terminal surface conflict, and arc terminal end be convenient for fuse-link 4, generally the terminal surface is just contradicted with fuse-link 4, and the first position of the part of installing and installing the 4 is not in the second position can be avoided the installation cavity 23 to the first position of the protection of the fuse-link 4, and the installation cavity 23 can be carried out by the safety protection of the installation cavity 23 when the position is not carried out from the first position of the safety device.

The upper and lower parts of the inner wall of the installation cavity 23, which is close to one side of the hinge part 21, are respectively provided with a first limiting block 232 and a second limiting block 233, and since the size of the installation cavity 23 is larger than that of the fuse link 4, the fuse link 4 is limited by the first limiting block 232 and the second limiting block 233, so that the fuse link 4 is ensured to be stably connected with the two electric connection assemblies 3.

The opposite side of the insertion opening 231 relative to the limiting arm 5 is provided with a guide arm 234, the end face of the guide arm 234 facing the insertion opening 231 is an arc-shaped surface, and the dismounting efficiency of the fuse link 4 is improved.

The outer wall of the mounting cavity 23 is provided with a rotation limiting block 235, the rotation limiting column 101 is arranged on the motion track of the rotation limiting block 101 in the shell 1, so that the rotation range of the mounting seat 2 can be limited, and the stability of the mechanism is improved.

The electrical connection assembly 3 comprises a wiring terminal 6 and conductive sheets 7 electrically connected with the wiring terminal 6, wherein the two conductive sheets 7 respectively extend to two sides of the mounting cavity 23 and can be electrically connected with the fuse link 4 when the mounting seat 2 is in the second position.

Specifically, the conducting strip 7 includes a clamping portion 71 located at the mounting cavity 23, a conducting portion 72 electrically connected with the connecting terminal 6, and a fixing portion 73 fixed to the housing 1, the clamping portion 71 includes two elastic clamping arms 711, a guiding surface 712 is disposed at the end of the elastic clamping arms 711, an arc-shaped recess 713 adapted to the fuse link 4 is disposed on the inner wall of the elastic clamping arms 711, the guiding surface 712 may be an inclined surface or an arc-shaped surface, so that the fuse link 4 is clamped between the two elastic clamping arms 711, and the arc-shaped recess 713 may promote stability of clamping the fuse link 4, thereby promoting stability of electrical connection between the fuse link 4 and the conducting strip 7.

A clamping groove 731 is formed in one side, far away from the clamping part 71, of the fixing part 73, a U-shaped clamp spring 74 is arranged in the clamping groove 731, and two extension arms 741 of the U-shaped clamp spring 74 are respectively abutted against the outer end surfaces of the two elastic clamping arms 711, so that the clamping force of the two elastic clamping arms 711 is ensured, and the service life of the clamping device is prolonged; the outer end surface of the elastic clamping arm 711 is provided with a limiting protrusion 714 which is matched with the extension arm 741 of the U-shaped clamping spring 74, so that the extension arm 741 is kept centered relative to the elastic clamping arm 711, and the U-shaped clamping spring 74 is prevented from deflecting and shaking.

The limiting groove 102 is formed in the shell 1, the fixing portion 73 is embedded in the limiting groove 102, and stability of the conductive sheet 7 in the shell 1 is improved, so that the fuse link 4 and the conductive sheet 7 are electrically connected more stably and reliably.

The casing 1 all is provided with the air vent 103 in corresponding binding post 6 and mount pad 2 positions, lets the inside steam that produces of fuse discharge fast, and further, casing 1 outer wall middle part is provided with the sunken relative edge position to the edge position is provided with the passageway that is linked together with the middle part sunken part, when the fuse carries out the modularization use, can stabilize the heat dissipation.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a fuse, is including casing (1), rotation setting in mount pad (2) of casing (1) and set up two electric connection components (3) in casing (1), be provided with in mount pad (2) fuse-link (4), first position that has dismantled and assembled fuse-link (4) when relative casing (1) of mount pad (2) rotate and let fuse-link (4) in it be connected with two electric connection components (3) respectively second position, its characterized in that, mount pad (2) including articulated portion (21), operating portion (22) and installation cavity (23), installation cavity (23) are including being used for supplying fuse-link (4) male inserted mouth (231), extend in mount pad (2) towards inserted mouth (231) and have spacing arm (5), the end of spacing arm (5) is arc and is inconsistent with the terminal surface of fuse-link (4).

2. A fuse according to claim 1, wherein the mounting cavity (23) is provided with a first stopper (232) and a second stopper (233) on the upper and lower sides of the inner wall of the side of the hinge portion (21), respectively.

3. A fuse as per claim 1, characterized in that the opposite side of the insertion opening (231) with respect to the limiting arm (5) is provided with a guiding arm (234), the end face of the guiding arm (234) facing the insertion opening (231) being an arc-shaped face.

4. A fuse as claimed in claim 1, characterized in that a rotation limiting block (235) is arranged on the outer wall of the mounting cavity (23), and a rotation limiting post (101) is arranged on the movement track of the rotation limiting block (235) in the housing (1).

5. A fuse as per claim 1, characterized in that the electrical connection assembly (3) comprises a terminal (6) and a conductive strip (7) electrically connected to the terminal (6), both conductive strips (7) extending to the sides of the mounting cavity (23) and being electrically connectable to the fuse body (4) when the mounting seat (2) is in the second position.

6. A fuse according to claim 5, characterized in that the conductive strip (7) comprises a clamping part (71) located at the mounting cavity (23), a conductive part (72) electrically connected with the connection terminal (6) and a fixing part (73) fixed to the housing (1), the clamping part (71) comprises two elastic clamping arms (711), the tail ends of the elastic clamping arms (711) are provided with guide surfaces (712), and the inner walls of the elastic clamping arms are provided with arc-shaped depressions (713) matched with the fuse body (4).

7. A fuse as claimed in claim 6, wherein a clamping groove (731) is provided on a side of the fixing portion (73) away from the clamping portion (71), a U-shaped clamp spring (74) is provided in the clamping groove (731), and two extension arms (741) of the U-shaped clamp spring (74) are respectively abutted against outer end surfaces of the two elastic clamping arms (711).

8. A fuse as per claim 7, characterized in that the outer end face of the elastic clamping arm (711) is provided with a limit projection (714) adapted to the extension arm (741) of the U-shaped clamp spring (74).

9. A fuse as claimed in claim 6, characterized in that the housing (1) is provided with a limit groove (102), and the fixing portion (73) is fitted into the limit groove (102).

10. A fuse as per claim 1, characterized in that the housing (1) is provided with ventilation holes (103) in correspondence of the connection terminals (6) and the mounting seats (2).