Superposition type voice coil motor and process for manufacturing same

Abstract

The invention discloses a superposition type voice coil motor and a process for manufacturing the same. The superposition type voice coil motor comprises a yoke plate, an upper cover, an upper clip, four magnets, a lower gasket, a coil, a support, a lower clip, two terminals and a lower cover. The process includes assembling the yoke plate, the upper cover, the upper clip and the four magnets on a first jig; assembling the lower gasket, the coil, the support, the lower clip, the two terminals and the lower cover and an assembly of the lower gasket, the coil, the support, the lower clip, the two terminals and the lower cover on a second jig. The superposition type voice coil motor and the process have the advantages that the superposition type voice coil motor is assembled on the two jigs, and accordingly the superposition type voice coil motor is low in double-section assembling error superposition and high in precision; notches are respectively arranged at two corners, which are opposite to the tops of the terminals, of the yoke plate, the tops of the terminals and the lower clip are additionally provided with tin and are welded in final working steps, accordingly, the welding tin can be prevented from being scattered on the lower clip to affect stress bearing points of the lower clip, and the assembling quality is high.

Description

technical field [0001] The invention relates to a photographic device, in particular to a superimposed voice coil motor and its production process. Background technique [0002] Such as figure 1 , figure 2 As shown, a conventional voice coil motor includes a yoke plate 1', an upper cover 2', an upper spring 3', a magnet 4', a lower gasket 5', a coil 6', a bracket 7', a lower spring 8', and a terminal 9' and lower cover 10'. The traditional production process is to assemble in three stages, that is, the assembly of semi-finished products in the front section, the assembly of semi-finished products in the middle section and the assembly of semi-finished products in the rear section. Specifically, it includes: assembling the yoke plate 1', the upper cover 2', the upper spring piece 3', and the magnet 4' on the first jig to make the front semi-finished product; on the second jig, the coil 6', Assemble the bracket 7' and the lower shrapnel 8' to make the middle semi-finished...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the three-stage assembly, each stage requires a jig, and there are many process equipments. Moreover, each stage of assembly will produce certain errors. After the assembly errors of each stage are superimposed, a large cumulative error will be formed.

[0004] 2. When making the mid-section semi-finished product, since the lower elastic piece 8' needs pre-deformation treatment, the pre-deformation treatment steps are: (1) Dispensing glue between the lower elastic piece 8' and the lower cover 10', sending it into the oven for curing, In order to achieve the effect of pre-fixing; (2) The shrapnel 8' is welded to the terminal 9'. Since the solder contains rosin, there is a problem of easy tin explosion during the welding process. Once the tin is exploded, the tin beads will splash on the internal mechanism, affecting Parts move, reducing the yield rate

After the welding is completed, the lower gasket 5' needs to be installed, and glue is also required during this process. The entire assembly process requires a lot of glue to fix, and the waiting time for glue to fix is ​​long, which is inefficient

[0005] 3. In the circulation process of each process, after a section of semi-finished products are completed, it is necessary to wait for other semi-finished products to be assembled before assembly. The production efficiency is low. During the waiting process, a large amount of UV glue needs to be used for pre-fixing, and the cost is high

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