Miniature roller shutter buffer unit

Abstract

A miniature roller shutter buffer unit comprises a housing, a sleeve arranged in the housing on one end, an oil seal sleeved on the sleeve rim so as to form a sealed space in the housing, an outer sleeve fixedly jointed with one end top of the housing in one piece, a spring facing away from the housing and winding on the sleeve rim of the outer sleeve, a rotary body that allows the sleeve winded by the spring to joint and engage so as to realize embedment and rotation between the spring and the sleeve, a seal cover sleeved on the sleeve rim and synchronically rotates, and a fixed member facingaway from the end of the housing and fixed with the seal cover and the sleeve. The buffer unit is small in size, suitable for a window roller shutter and a miniature roller shutter in a vehicle doorof a limited thickness, so the roller shutter can stretch and contract with a buffer effect.

Description

Technical field [0001] The invention relates to a cushioning device for a small-sized roller shutter, in particular to a reduced outer diameter of the entire assembled volume of the cushioning device, so as to be suitable for roller shutters on doors and windows and small-sized roller shutters with limited thickness inside automobile doors, and can be widely used. Background technique [0002] At present, the use of curtains for sunshading or decoration in homes and offices has become a very popular phenomenon. However, for curtains to be opened and closed, most of them use drawstrings to open or close the curtains, but the curtains are only suitable for blinds or blinds. Curtains that are opened and closed to the left and right are not suitable for a curtain. Therefore, the inventor specially developed a special effort to test and research a curtain device. The curtain device is equipped with a retractable and retractable device at the left end of the track. , The curtain fabric...

AI Technical Summary

Problems solved by technology

Then, the outer diameter of the sleeve 131 must be increased, and the outer diameter of the sleeve 131 must be increased for the inner sleeve of the spring 136, and the outer diameter of the spring 136 plus the outer diameter of the sleeve 131 Finally, the sleeve 131 is inserted into the outer casing 130, so that the entire assembled volume outer diameter of the buffer device 13 is increased (such as Figure 4 shown), and its manufacturing cost is high

Therefore, it is easy to increase the volume outer diameter of the buffer device 13, and it is very limited if the volume outer diameter of the buffer device 13 is to be reduced.

Therefore, the buffer device 13 of this case can only be assembled on the curtain device 1 used on doors and windows, and it is difficult to assemble the curtain device 1 on the small roller blind used inside the limited thickness of the automobile door.

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