Modular accessory apparatus

A modular accessory apparatus, comprising:

• a body component, having a first end and a second end, the body component having a curvature such that a gap forms between the first end and the second end along the direction of extension of the curvature, and the first end has a connector;
• and
• a housing component for modularly coupling to the connector, wherein the housing component comprises:
• a housing body having an opening;
• a coupler component disposed in the housing body;
• and
• a gateway block disposed in the opening, and the gateway block has a through-hole corresponding to the coupler component;
• wherein the connector passes through the through-hole and engages with the coupler component, and the through-hole of the gateway block limits a displacement movement of the connector to the direction through the through-hole;
• wherein the coupler component is formed substantially in the shape of an ohm symbol (), wherein the coupler component has a coupler base, two guidance components respectively connected to the coupler base, and a coupler opening formed between the two guidance components;
• the coupler opening corresponds to the opening of the housing body and the through-hole of the gateway block.