CN2800478Y

CN2800478Y - Fuse base

Info

Publication number: CN2800478Y
Application number: CN 200520001867
Authority: CN
Inventors: 陈志成
Original assignee: LEQING DONGDU ELECTRONIC COMPONENT FACTORY
Current assignee: LEQING DONGDU ELECTRONIC COMPONENT FACTORY
Priority date: 2005-02-02
Filing date: 2005-02-02
Publication date: 2006-07-26
Anticipated expiration: 2015-02-02

Abstract

The utility model relates to a fuse base which is designed for solving the problem of inconvenient change of a fuse in the prior art. The utility model comprises a U-shaped hollow insulated casing and an n-shaped hollow insulated rotary inner cap which is in clearance fit with the inner surface of the hollow casing, wherein a fuse can be arranged in the hollow insulated casing, and then, the hollow insulated rotary inner cap is inserted in the hollow casing and is rotated to make a wiring foot of a pin of a fastener with a round belt in the hollow casing buckled with a positioning foot on a positioning sleeve in the hollow insulated rotary inner cap. Thus, the hollow insulated rotary inner cap and the hollow insulated casing are buckled together. When the fuse needs to be changed, the rotary inner cap is rotated oppositely, and thus, the use and the change of the fuse are convenient.

Description

Fuse base

Technical field

The utility model relates to a kind of fuse base.

Background technology

Existing protective tube is many with in the circuit board, for the ease of the replacing of protective tube, fuse base is installed in the circuit board usually.Because of this fuse base and protective tube are exposed, so fuse base normally is enclosed in electric equipment inside, need open the cabinet of electric equipment during replacing, changes extremely inconvenient.

The utility model content

For overcoming above-mentioned defective, the utility model provides a kind of fuse base that is convenient for changing protective tube.

For achieving the above object, the utility model fuse base comprises the insulation hollow housing of a U-shaped and the n shape insulation hollow rotating inner cap that cooperates with the hollow housing internal surface gaps;

Be provided with first pin bores that is connected with outer surface in described hollow housing inner surface bottom, first leg is installed in described pin bores; Inner surface at the hollow housing middle part also is provided with second pin bores that is connected with outer surface, also comprise one with housing middle part inner surface suitable in the band buckle contact pin leg that takes all of, the extension of the band buckle contact pin leg that takes all of in described is installed in described second pin bores; Outer surface at described hollow housing is provided with screw thread;

Hollow bulb at described hollow rotating inner cap is provided with first spring suitable with the hollow bulb internal diameter; Be provided with the hollow positioning sleeve in first spring, cover gab one end radially was provided with a pair of angle in described positioning sleeve was near; Between the angle and first spring, be provided with a pad; The buckle and the angle on the described positioning sleeve of the band buckle contact pin leg that takes all of in the described hollow housing are suitable; Hollow bulb at described positioning sleeve is provided with the insurance pipe box, is provided with second spring in described insurance pipe box; On the end face of non-opening one end of described hollow inner cap, be provided with yi word pattern or cross depression.

After adopting said structure, protective tube can be inserted in the hollow housing of insulation, the hollow rotating inner cap that will insulate then inserts in the hollow housing and rotating insulated hollow inner cap, make in the hollow housing in take all of that the angle on the positioning sleeve is interlocked in band buckle contact pin leg and the insulation hollow rotating inner cap, the hollow housing of insulation hollow rotating inner cap and insulation is integrated, and when needs are changed protective tube, only will rotate the inner cap counter-rotating get final product, therefore use, replacing protective tube are comparatively convenient.

Description of drawings

Fig. 1 is the exterior contour schematic diagram of the utility model fuse base.

Fig. 2 is the cross-sectional schematic of the utility model fuse base shown in Figure 1.

Fig. 3 is the schematic perspective view of the band buckle contact pin leg that takes all of in the utility model fuse base shown in Figure 2.

Fig. 4 is the assembly technology flow chart of the utility model fuse base.

Embodiment

With reference to Fig. 1, Fig. 2 and Fig. 3, the utility model fuse base comprises the hollow housing 1 of an insulation and the insulation hollow rotating inner cap 2 that cooperates with the hollow housing internal surface gaps.

Be provided with first pin bores that is connected with outer surface in described hollow housing 1 inner surface bottom, first leg 11 is installed in described pin bores, described first leg is the shape of falling L; Inner surface at the hollow housing middle part is provided with second pin bores that is connected with outer surface, also comprise one with housing middle part inner surface suitable in the band buckle contact pin leg 12 that takes all of, the extension of the band buckle contact pin leg 12 that takes all of in described is installed in described second pin bores; For the ease of installing, be provided with screw thread 13 at the outer surface of described hollow housing; Hollow bulb at described hollow rotating inner cap 2 is provided with first spring 21 suitable with the hollow bulb internal diameter; Be provided with hollow positioning sleeve 22 in first spring 21, cover gab one end radially is provided with a pair of angle 221 in the described positioning sleeve 22 nearly hollow rotating; Between the angle 221 and first spring 21, be provided with a pad 23; The buckle and the angle 221 on the described positioning sleeve 22 of the band buckle contact pin leg 12 that takes all of in the described hollow housing 1 are suitable; For the guarantee insurance pipe fully contacts with second leg 12, be provided with insurance pipe box 24 at the hollow bulb of described positioning sleeve, in described insurance pipe box, be provided with second spring 25; On the end face of described hollow inner cap 2 non-opening one ends, be provided with yi word pattern or cross depression 26.

During use, protective tube can be inserted in the hollow housing 1 of insulation, utilize then in the yi word pattern or cross depression 26 on the non-open end of yi word pattern or cross screwdriver insertion insulation hollow rotating inner cap, make in the hollow housing in the band buckle contact pin leg that takes all of insert in the insulation hollow inner cap in the location between the cover and hollow inner cap, and angle on the positioning sleeve is taken all of in entering in the buckle on the band buckle contact pin leg, make the left-handed or dextrorotation of screwdriver then, make angle with in the buckle that takes all of on the band buckle contact pin leg be interlocked, thereby the hollow housing of insulation hollow rotating inner cap and insulation is integrated, and when needs are changed protective tube, be that the end face that utilizes yi word pattern or cross screwdriver to insert non-opening one end of hollow inner cap is provided with yi word pattern or cross depression equally, will rotate the inner cap counter-rotating and get final product.This fuse base can be installed on the shell of instrument, equipment, and the openend of hollow housing is exposed at outside the shell of instrument, equipment, uses like this, to change protective tube comparatively convenient.

Claims

1, a kind of fuse base is characterized in that: comprise the U-shaped hollow housing of an insulation and the n shape insulation hollow rotating inner cap that cooperates with the hollow housing internal surface gaps;

Be provided with first pin bores that is connected with outer surface in described hollow housing inner surface bottom, first leg is installed in described pin bores; Inner surface at the hollow housing middle part is provided with second pin bores that is connected with outer surface, also comprise one with housing middle part inner surface suitable in the band buckle contact pin leg that takes all of, the extension of the band buckle contact pin leg that takes all of in described is installed in described second pin bores; Outer surface at described hollow housing is provided with screw thread;

Hollow bulb at described hollow rotating inner cap is provided with and the first suitable spring of hollow inner cap internal diameter; Be provided with the hollow positioning sleeve in first spring, cover gab one end radially was provided with a pair of angle in described positioning sleeve was near; Between the angle and first spring, be provided with a pad; The buckle and the angle on the described positioning sleeve of the band buckle contact pin leg that takes all of in the described hollow housing are suitable; Hollow bulb at described positioning sleeve is provided with the insurance pipe box, is provided with second spring in described insurance pipe box; On the end face of non-opening one end of described hollow inner cap, be provided with yi word pattern or cross depression.