@Steelers Sweetheart,
Not to withhold food, clothing or conjugal rights from a wife (Ex. 21:10)
Marital relations are the wife's right, not the husband's. If he isn't helping with your needs, he isn't following God's command.
I'd suggest incorporating your vibrator with your husband. Shouldn't be a threat to his masculininty. Once he understands you look fowards to sex with him more instead of less knowing you'll be having fun too it'll only enhance your relations, not diminish them.