CN2395374Y

CN2395374Y - Super fine box type capacitor non-glued outer case

Info

Publication number: CN2395374Y
Application number: CN 99229885
Authority: CN
Inventors: 尤勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-05
Filing date: 1999-11-05
Publication date: 2000-09-06
Anticipated expiration: 2009-11-05

Abstract

The utility model relates to an electronic element, particularly a purpose-made capacitor case which is composed of a left lateral wall, a right lateral wall, a front surface wall, a rear surface wall and a bottom surface positioned on the bottom part, wherein, the upper parts of the front surface wall and the rear surface wall are respectively provided with a bulge dot which is inwardly projected. The space H between the center and the upper surface of the bottom surface of the bulge dot is a little smaller than the height h of a capacitance core, and the space A between the two bulge dots of the front surface wall and the rear surface wall is a little smaller than the thickness b of the capacitance core. The bottoms of the front surface wall and the rear surface wall are provided with positioning bulges, and the space B between the positioning bulges of the two surface walls is approximate to the thickness b of the capacitance core; the left side wall and the right side wall are provided with gas tanks which are communicated from the bottom up. After the case is utilized to be provided with the capacitance core, the gum leakage deficiency, etc. can be avoided.

Description

Microminiature boxlike capacitor is not beaten the glue shell

The utility model relates to electronic devices and components, the specifically a kind of capacitor case that need not play glue.

Capacitor is usually by shell and place the capacitance core in the shell to constitute, on capacitance core, draw two leads, for adapting to the needs of automated production, the lead of all capacitors is through together with a belt, capacitance core must be placed in the enclosure securely, in order to avoid deviate from shell, way in the past is earlier capacitance core to be placed in the shell, glue with epoxy resin and so on clings it again, Here it is the so-called adhesive process of beating.Its defective is to be easy to generate leakage glue, because when welding this capacitor in the circuit board, its temperature can reach more than 200 ℃, so high temperature can make colloid melt, and in shell, spill, drop on the wiring board, thereby pollute wiring board, cause the product seal failure, properties of product become bad also may produce the open circuit phenomenon.

The purpose of this utility model is that a kind of microminiature boxlike capacitor that utilizes the strong point between shell and capacitance core to fix capacitance core of design is not beaten the glue shell, leaks the glue phenomenon to avoid producing.

Its main technical schemes is that this shell is made of the bottom surface that left and right two sidewalls and former and later two are faced the wall and meditated and is positioned at the bottom, at the forward and backward oriented projecting inward drumbeat of top difference of facing the wall and meditating, spacing H between the center of this drumbeat and bottom surface upper surface is slightly less than the height h of capacitance core, and the beeline A between two drumbeats on forward and backward the facing the wall and meditating is slightly less than the thickness b of capacitance core.Also be provided with positioning convex in forward and backward bottom of facing the wall and meditating, the beeline B between two two positioning convex on facing the wall and meditating is similar to the thickness b of capacitance core, and the air drain that connects is from the bottom up arranged on left and right sidewall.

The utility model has the advantages that owing to be provided with spacing A respectively on the top of facing the wall and meditating of shell and be slightly less than the drumbeat that capacitance core thickness b, its height H from the bottom also are slightly less than the height h of capacitance core, when capacitance core is inserted, it is not very big pretightning force that this drumbeat can produce one to capacitance core, capacitance core can be fixed in the enclosure reliably, but can not make shell because of drumbeat outside " expansion "; Secondly, after the bottom of facing the wall and meditating in front and back is provided with the positioning convex of thickness b that its width B is similar to capacitance core, can guarantee that capacitance core is positioned at shell exactly, the effect that also has simultaneously the fixed capacity core, the fixation of positioning convex can remedy the loosening defective of capacitance core that may cause inadequately because of above-mentioned pretightning force; In addition, after the sidewall of shell was provided with air drain, the gas that helps may existing between capacitance core and shell was got rid of as soon as possible.

Fig. 1 is a structure chart of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is the structure chart of capacitance core.

As shown in the figure: shell is by preceding, latter two faces the wall and meditates 5 with left, right two sidewalls 2 and the bottom surface 4 that is positioned at the bottom constitute, 5 the upper inner of facing the wall and meditating in front and back is provided with inwardly outstanding drumbeat 1 respectively, spacing A between two two drumbeats of facing the wall and meditating on 5 is slightly less than the thickness b of capacitance core 7, spacing H between the upper surface of drumbeat center and bottom surface 4 is slightly less than the height h of capacitance core 7, the section configuration of capacitance core is that two is two semicircles, the centre is a rectangle, the height that the height h of capacitance core should be rectangle adds the radius of the semicircle in top and bottom, the spacing B that two positioning convex on two oriented 3, two projecting inward of positioning convex in bottom of 5 of facing the wall and meditating are faced the wall and meditated are 3 is similar to the thickness b of capacitance core 7.The air drain 6 that connects is from the bottom up arranged on two sidewalls.

Claims

1. a microminiature boxlike capacitor is not beaten the glue shell, the bottom surface (4) that this shell is faced the wall and meditated (5) by left and right two sidewalls (2) and former and later two and one is positioned at the bottom constitutes, it is characterized in that at the top of forward and backward facing the wall and meditating (5) difference oriented projecting inward drumbeat (1), spacing H between center of this drumbeat (1) and bottom surface (4) upper surface is slightly less than the height h of capacitance core, and the beeline A between two drumbeats (1) on forward and backward the facing the wall and meditating (5) is slightly less than the thickness b of capacitance core.

2. shell according to claim 1 is characterized in that in the bottom of forward and backward facing the wall and meditating (5) positioning convex (3) being arranged, and the beeline B between the positioning convex (3) on two face the wall and meditate (5) is similar to the thickness b of capacitance core.

3. shell according to claim 1 is characterized in that having the air drain (6) that connects from the bottom up on left and right sides sidewall (2).