| 摘要 |
Provided is a hitting block assembly in which a hitting block is supported by a rotation preventing member such that an observation window of the hitting block always faces the front side by preventing the hitting block from being rotated. A hitting block assembly comprises a supporter(11), a drive unit(20), a hitting block(30), and a hitting sensing unit(40). The supporter has a receiving groove(11a) opened to the upside. The drive unit includes a solenoid main body, a plunger(22), and a coil. The hitting block includes a housing(31) and a light emitting unit(32). The housing is made of a synthetic resin, has an observation window(31a) formed on the front side thereof, and is fixedly connected to the plunger. The light emitting unit is installed in the housing. The hitting sensing unit senses that the hitting block is hit. The hitting block assembly further comprises a rotation preventing member(70) which is extended downwardly from the bottom of the housing such that the rotation preventing member is parallel to the plunger, and which is vertically slidably coupled to the supporter.
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