Height-Adjustable Electric Strike Latch for Panic Bars
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Solution Overview
Problem
The existing electric strikes for panic bars in emergency doors lack a straightforward method for height adjustment, requiring the use of plastic sheets or lifts for proper installation and contact, which complicates the assembly process.
Innovation Solution
An electric strike with a swivelling latch featuring a height-adjustable front portion and complementary protrusions for secure fixing, eliminating the need for additional adjustment materials, allowing precise alignment and stable contact between the latch and the door frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If plastic sheets or lifts are placed between the case and the door for adjustment, then proper contact and alignment of the panic bar with the latch is achieved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The latch front portion is made height-adjustable relative to the latch body, allowing dynamic adaptation to different installation conditions. The vertically elongated openings enable the front portion to be positioned at different heights and securely fastened, eliminating the need for external adjustment materials like plastic sheets.
Solution Approach 2:
The latch is divided into two main segments: the latch body and the height-adjustable front portion. This segmentation allows independent adjustment of the front portion's height relative to the body, enabling precise alignment without requiring additional adjustment components.
2Adaptability or versatility
If a fixed-height latch is used, then the structure is simpler, but adaptation to different door thicknesses and alignments is limited
Solution Approach 1:
The latch front portion is designed to be height-adjustable relative to the latch body through vertically elongated openings and fastening screws, enabling adaptation to different door configurations while maintaining structural integrity.
Solution Approach 2:
The height-adjustable front portion allows the same latch design to be universally applied to doors with varying thicknesses and alignment requirements, eliminating the need for multiple fixed-height latch variants.
3Adaptability or versatility
If the front portion is height-adjustable with vertically elongated openings, then adaptation to different door configurations is improved, but the risk of instability or loose fixing may increase
Solution Approach 1:
The front portion can be adjusted to different heights within the vertically elongated openings and then securely fastened using screws, providing both adaptability and stability. Once positioned, the fastening mechanism ensures firm fixation.
Solution Approach 2:
The vertically elongated openings are pre-designed to guide the positioning of the front portion before final fastening. This preliminary guidance ensures proper alignment and stable fixation when the screws are tightened.
Data Source
Figure 1~3b
AI summary
The invention relates to an electric strike for panic bars applicable in emergency exit doors, comprising a case (1) housing an electromechanical mechanism for blocking and unblocking a swivelling latch (2) assembled in the case by means of a swivelling shaft (3). The latch (2) comprises a body (4) bearing the shaft (3), provided with a front surface (41), and a latch front portion (5) provided with a rear surface (51) facing the front surface (41) of the body (4) and adjustable in height. Said latch front portion (5) comprises: vertically elongated openings (52) for height adjustment with respect to screws (6) for the front tightening and fixing to the body (4), and a curved front surface (53) having a generatrix parallel to the swivelling shaft (3) of the latch (2), suitable for receiving a panic bar once the position of the front portion (5) is height adjusted with respect to the body (4).