Capacitor case
A capacitor and shell technology, applied in the field of capacitor shells, can solve the problems of increasing difficulty in appearance inspection and difficult printing, and achieve the effects of high mechanical strength and good vibration resistance
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Embodiment approach 1
[0040] 1. Configuration of the capacitor case 1 according to the first embodiment
[0041] (1) Basic composition
[0042] The capacitor case 1 is a bottomed cylindrical capacitor case for accommodating an aluminum electrolytic capacitor element.
[0043] figure 1 It is a figure for demonstrating the capacitor|condenser case 1 concerning Embodiment 1. in, figure 1 (a) is a perspective view in which the capacitor case 1 is viewed obliquely from above with the opening 11 positioned above the drawing. figure 1 (b) is a plane PL1 (refer to figure 1 (a)) After the capacitor case 1 is cut, it is a cross-sectional view of the capacitor case 1 when the cutting surface is viewed from a direction perpendicular to the plane PL1.
[0044] Capacitor case 1 such as figure 1 (a) and figure 1 As shown in (b), it includes: a cylindrical trunk portion 10 provided with an opening 11 on one side (upper side in the figure); Bottom 20.
[0045] The outer peripheral wall 12 of the cyli...
Embodiment approach 2
[0092] Next, we will refer to Figure 5 The capacitor case 2 according to Embodiment 2 will be described. The description of the same components in Embodiment 2 as those in Embodiment 1 will be omitted.
[0093] Figure 5 It is a figure for demonstrating the capacitor|condenser case 2 concerning Embodiment 2. in, Figure 5 (a) is with figure 2 The figure corresponding to the capacitor case 1 related to the first embodiment in (a), that is, it is cut in parallel with the bottom 20 and facing the part including the convex line part 30 in the cylindrical body part 10 (and along the tube The cross-sectional view when the cut surface is viewed from the central axis AX1 in the radial direction (r direction) of the shape trunk portion 10. Among the figures, C1 is an imaginary circle connected to the top 35a of the convex line portion 30a, and C2 is an imaginary circle for displaying and storing in the An imaginary circle of the outer circumference of an aluminum electrolytic ca...
Embodiment approach 3
[0100] Next, as a third embodiment, a method of manufacturing the capacitor case 1 according to the first embodiment will be described.
[0101] 1. Manufacturing method of capacitor case 1
[0102] Figure 6 It is a flowchart for explaining the manufacturing method of the capacitor|condenser case concerning Embodiment 3.
[0103] Such as Figure 6 As shown, the manufacturing method of the capacitor casing involved in the third embodiment is used to manufacture the capacitor casing involved in the first embodiment, which includes in sequence: a cold slug (Slug) material placement process S20; a stamping (Impact press) process S30; rolling (Rolling) ) cold material separation process S40; and trimming (Trimming) process S50. In addition, the mold preparation process S10 may be performed before the cold material placing process S20 is performed.
[0104] The die preparation step S10 is a step of preparing a die including a punch and a die set (Die) having a feed recess 122 in...
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