CN203573928U - Thread-type safety device - Google Patents

Abstract

The utility model discloses a threaded insurance, which comprises a cylindrical insulating box body (1), one end of the insulating box body (1) is fixed with a terminal (3), and the other end is threadedly connected with a wiring cover (4). The insulating box (1) is provided with a safety tube (2), and the caps (201) at both ends of the safety tube (2) are provided with external threads, and the insulating box (1) is close to the terminal (3). One end is provided with an internal thread matched with the external thread of the cap (201), and a cross groove (202) is provided on the end surface of the cap (201). The beneficial effects of the utility model are: the safety tube in the safety device is installed in the insulating box through threads, which facilitates the removal of the safety tube, and also ensures that the safety tube does not rotate during use, reducing the probability of damage to the safety tube .

Description

threaded insurance

technical field

The utility model relates to a safety device, in particular to a threaded safety device.

Background technique

In the existing safety device, the fuse is directly placed in a cylindrical box, the fuse is generally cylindrical, with metal caps at both ends, and a fuse inside, the fuse is electrically connected to the caps at both ends, and the fuse is located in the cylindrical box At the same time, the caps at both ends are in electrical contact with the connecting terminals at both ends of the cylindrical box body. When the fuse is damaged and needs to be replaced, the fuse is usually taken out by hand after opening the cover, but the fuse is difficult to remove in the shell. It is a great inconvenience to the staff, and the insurance tube can shake and be easily damaged.

Utility model content

The purpose of the utility model is to overcome the shortcomings and deficiencies of the above-mentioned prior art, provide threaded insurance, and solve the defects that the insurance tube in the existing insurance device is difficult to remove and can be shaken and easily damaged.

The purpose of this utility model is achieved through the following technical solutions: threaded insurance, including a cylindrical insulating box body, one end of the insulating box body is fixed with a terminal, and the other end is threadedly connected with a wiring cover. A safety tube is arranged inside, and the caps at both ends of the safety tube are provided with external threads, and the end of the insulating box close to the terminal is provided with internal threads that match the external threads of the cap, and the end surface of the cap is provided with cross grooves. When the device is in use, put the safety tube into the insulating box and touch the threaded end, then use a screwdriver to screw the safety tube into the insulating box so that the safety tube touches the terminal, then cover the wiring cover, and the wiring cover is screwed It also comes into contact with the fuse after it is installed. When the fuse is damaged and replaced, just open the wiring cover, and then unscrew the fuse, which saves the trouble of taking out the fuse, and the position of the fuse is fixed and will not appear in the insulating box. The phenomenon of rotation protects the fuse.

Further, a hook is provided on the above-mentioned insulating box body, which is convenient for installation and carrying of the safety device.

Furthermore, anti-slip lines are provided on the above-mentioned wiring cover, and the extension direction of the anti-slip lines is the axial direction, which facilitates the rotation of the staff and prevents fingers from slipping.

Further, the above-mentioned connection terminal is provided with a metal elastic member A on one side of the insulating box to ensure good electrical contact.

Furthermore, the above-mentioned terminal cover is provided with a metal elastic part B on the side facing the insulating box, which ensures good electrical contact.

The beneficial effects of the utility model are: the safety tube in the safety device is installed in the insulating box through threads, which facilitates the removal of the safety tube, and also ensures that the safety tube does not rotate during use, reducing the probability of damage to the safety tube .

Description of drawings

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the split schematic diagram of embodiment 1;

Fig. 3 is the structural representation of fuse;

Fig. 4 is the split schematic diagram of embodiment 2;

In the figure, 1-insulation box, 2-fuse tube, 3-terminal, 4-wiring cover, 5-hook, 6-anti-skid pattern, 7-metal elastic part A, 8-metal elastic part B, 201-cap , 202-cross recess.

Detailed ways

Below in conjunction with embodiment the utility model is described in further detail, but the structure of the utility model is not limited to the following examples:

【Example 1】

As shown in Figure 1, Figure 2, and Figure 3, the threaded insurance includes a cylindrical insulating box body 1, one end of the insulating box body 1 is fixed with a terminal 3, and the other end is threadedly connected with a wiring cover 4. The insulating box body 1 is provided with a safety tube 2 inside, and the caps 201 at both ends of the safety tube 2 are provided with external threads, and the end of the insulating box body 1 close to the terminal 3 is provided with internal threads that cooperate with the external threads of the cap 201 , The end face of the cap 201 is provided with a cross groove 202 . When using this device, put the safety tube 2 into the insulating box body 1, and when it touches the threaded end, use a screwdriver to screw the safety tube 2 into the insulating box body 1, so that the safety tube 2 touches the terminal 3, and then cover the Put on the wiring cover 4, and after the wiring cover 4 is screwed on, it also touches the fuse tube 2. When the fuse tube 2 is damaged and replaced, open the wiring cover 4, and then unscrew the fuse tube 2, which saves the trouble of taking out the fuse tube 2 , and the position of the safety tube 2 is fixed, so that the phenomenon of rotation in the insulating box body 1 does not occur, and the safety tube 2 is protected.

[Example 2]

As shown in Fig. 4, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is that a hook 5 is provided on the insulating box 1, which facilitates the installation and carrying of the safety device.

In this embodiment, the wiring cover 4 is provided with anti-slip lines 6, and the extension direction of the anti-slip lines 6 is the axial direction, which facilitates the rotation of the staff and prevents fingers from slipping.

The connecting terminal 3 of this embodiment is provided with a metal elastic member A7 on one side inside the insulating box body 1 to ensure good electrical contact. The metal elastic member A7 is made of elastic metal such as springs and elastic sheets.

In this embodiment, the side of the terminal cover 4 facing the insulating box 1 is provided with a metal elastic member B8 to ensure good electrical contact. The metal elastic member B8 is made of elastic metal such as springs and elastic sheets.

Claims (5)

1. screw-type insurance, it is characterized in that: comprise a cylindrical insulation box body (1), one end of insulation box body (1) is fixed with binding post (3), the other end link cover of FIG (4) that has been threaded, described insulation box body (1) inside arranges protective tube (2), on the block (201) at described protective tube (2) two ends, be all provided with external screw thread, insulation box body (1) is provided with near one end of binding post (3) the internal thread coordinating with the external screw thread of block a shot (201), on the end face of block (201), is provided with cross recess (202).

2. screw-type insurance according to claim 1, is characterized in that, on described insulation box body (1), is provided with hook (5).

3. screw-type insurance according to claim 1, is characterized in that, in described link cover of FIG (4), be provided with anti-slip veins (6), the bearing of trend of anti-slip veins (6) is axial direction.

4. screw-type insurance according to claim 1, is characterized in that, the side that described binding post (3) is positioned at insulation box body (1) is provided with metallic elastic part A(7).

5. according to the screw-type insurance described in claim 1 or 4, it is characterized in that, described link cover of FIG (4) is provided with metallic elastic part B(8 towards a side of insulation box body (1)).

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