| 摘要 |
A snap fastener which secures a first thin wall with a through-opening. A base part includes a plate which overlaps the longitudinal edges of the through-opening. A head part is provided as a housing with fastening projections such as fastening cams or leaf spring devices having flexible fastening surfaces. The housing is snapped into the through-opening so that it grips only the first thin wall. Unlocking devices are provided in the housing, via which the push elements can be pulled back into the housing from the front, and the housing can be disengaged from the other thin wall (e.g., a wall support). The dimensions between (1) the holding area of the fastening projections and the push members, and (2) the supporting plane of the base part are selected in such a way that, when the push elements are pulled back, the fastening projections lie on the front panel with clearance. |
| 主权项 |
1. A snap fastener which is configured to secure a first thin wall having a through-opening to a second thin wall similarly having a through-opening, the snap fastener comprising:
a base part which is configured to be arranged at the first thin wall in the through-opening thereof; and a head part extending away from the base part, the head part having a diameter which initially increases and then decreases in its longitudinal section from an end of the head part in a direction of the base part; and an unlocking device; wherein the head part comprises:
a male plug-in piece which, by overcoming a spring force acting radically outward in a direction of the diameter of the head part, is configured to be received by an undercut female insertion piece which is formed by or supported by the through-opening of the first thin wall; anda guide or a channel, in which a push element or a holding element is arranged, the push element or holding element being pressed by at least one spring into a position in which the push element or holding element projects over an end of the guide or channel;wherein an end of the holding element or push element which projects out of the guide or the channel has a triangular shape in a projection line extending perpendicular to the first thin wall when the snap fastener is arranged in the through-opening of the first thin wall; wherein the base part includes a plate which overlaps longitudinal edges of the through-opening in the first thin wall when the snap fastener is arranged in the through-opening of the first thin wall; wherein the head part is provided as a housing with fastening projections, where the housing is configured to be snapped into the through-opening in the first thin wall in such a way that it grips only the first thin wall; wherein, by means of the unlocking device, the push element or holding element is configured to be pulled back into the housing from the front, and the housing is configured to be disengaged from the second thin wall; and wherein a first distance between a holding area of the fastening projections, which is configured to grip the first thin wall, and a supporting plane of the base part, which supports the base part on the thin walls when the snap fastener is arranged in the through-openings of the thin walls, and a second distance between a holding area of the push element or holding element, which is configured to grip the second thin wall, and the supporting plane of the base part, are selected in such a way that the fastening projections are configured to lie on the first thin wall with clearance, when the push element or holding element is pulled back and the snap fastener is arranged in the through-openings of the thin walls. |
