Abstract: The present disclosure discloses a cordless roller shutter spring regulator, including a roller shutter spring pre-tightening force adjustment mechanism and a self-locking mechanism, wherein the self-locking mechanism is used to lock an adjustment shaft on the roller shutter spring pre-tightening force adjustment mechanism before an installation weight is installed; after the installation weight is installed, the self-locking mechanism unlocks the adjustment shaft on the roller shutter spring pre-tightening force adjustment mechanism under a top pressure of the installation weight. The self-locking mechanism includes a pressing spring, a self-locking ring and a fixed ring, wherein an end face of the self-locking ring is provided with a top pressure transmission rod and a ring of ratchet teeth A, the ratchet teeth A are engaged with the ratchet teeth B, the ratchet teeth A are able to slide in one direction relative to the ratchet teeth B.

Abstract: The present disclosure relates to the technical field of mechanical transmission, in particular to a spring driving system for a cordless soft gauze curtain, including a first spring joint, a transmission intermediate pipe, a main spring, and a retarder, wherein the transmission intermediate pipe is sleeved with the main spring, one end of the transmission intermediate pipe is sleeved with the first spring joint, the first spring joint is connected to the transmission intermediate pipe through a pin, the other end of the transmission intermediate pipe is sleeved with the retarder, and the main spring is connected to the first spring joint and the retarder, respectively. The spring driving system for the cordless soft gauze curtain has the advantages of reducing the safety risk and the length of the spring and being low in fault rate.

Abstract: The present disclosure discloses a day-and-night curtain dual-rail dual-control correlation type stopper, comprising a limiting seat, a down-running stop block, an up-running stop block, a main screw rod, a main gear, an auxiliary screw rod and an auxiliary gear, wherein the main gear meshes with the auxiliary gear, the main screw rod is provided with a down-running stop boss, the auxiliary screw rod is provided with an up-running stop boss and a synchronous linkage boss, an end face of the auxiliary gear is provided with a synchronous linkage shifting block, and the synchronous linkage shifting block shifts the synchronous linkage boss so that an auxiliary mandrel follows a main mandrel to rotate synchronously. The stopper of the present disclosure adopts the above-mentioned technical solution, and achieves the dual-rail dual-control correlation type limit control.

Abstract: The disclosure discloses a return device and a windproof roller shutter formed by the return device. The return device includes an end cover, wherein a sliding chute is arranged on the end cover, the sliding chute is arranged slantly, and a horizontal height of a first end of the sliding chute is larger than a horizontal height of a second end of the sliding chute; a sliding component, wherein the sliding component moves along the sliding chute; and a fixed plate mounted at one end of a reel pipe, wherein the sliding component is mounted on the fixed plate. The windproof roller shutter includes a reel pipe, a shutter body, a low rail, two side rails and two return devices.

Abstract: Disclosed are a roller blind balance regulator and a roller blind composed thereof. The roller blind balance regulator includes a stepped shaft and a friction cylinder, where the stepped shaft is provided with an external thread, the stepped shaft penetrates the friction cylinder, the friction cylinder is provided with an internal thread and is in threaded connection with the stepped shaft, and a friction layer is arranged between the friction cylinder and the stepped shaft. The roller blind includes a roller blind rod, a blind fabric, two mounting members, and the roller blind balance regulator, and a return spring is arranged in the roller blind rod. In the present invention, the roller blind rod drives the friction cylinder to rotate, so that the friction cylinder axially moves along a limiting screw while rotating, thereby increasing or decreasing a friction force between the friction cylinder and the friction layer.

Abstract: Disclosed are a roller blind balance regulator and a roller blind composed thereof. The roller blind balance regulator includes a stepped shaft and a friction cylinder, where the stepped shaft is provided with an external thread, the stepped shaft penetrates the friction cylinder, the friction cylinder is provided with an internal thread and is in threaded connection with the stepped shaft, and a friction layer is arranged between the friction cylinder and the stepped shaft. The roller blind includes a roller blind rod, a blind fabric, two mounting members, and the roller blind balance regulator, and a return spring is arranged in the roller blind rod. In the present invention, the roller blind rod drives the friction cylinder to rotate, so that the friction cylinder axially moves along a limiting screw while rotating, thereby increasing or decreasing a friction force between the friction cylinder and the friction layer.

Abstract: The disclosure discloses a return device and a windproof roller shutter formed by the return device. The return device includes an end cover, wherein a sliding chute is arranged on the end cover, the sliding chute is arranged slantly, and a horizontal height of a first end of the sliding chute is larger than a horizontal height of a second end of the sliding chute; a sliding component, wherein the sliding component moves along the sliding chute; and a fixed plate mounted at one end of a reel pipe, wherein the sliding component is mounted on the fixed plate. The windproof roller shutter includes a reel pipe, a shutter body, a low rail, two side rails and two return devices.

Abstract: The invention releases a BEAD-CHAIN DRIVING CLUCH FOR SUPER-HEAVY-DUTY ROLLER BLIND WITH SELF-LOCKING COIL SPRING SYSTEM DRIVEN PRIOR TO PLANETARY GEAR DECELERATOR which comprises the following components in order: Cluch base, sprocket wheel, rotating arm, self-locking coil spring system, planetary gear decelerator, traveling limit device. The mechanism of the invention is as follow: unscrew the bolt from the Cluch base and attach the chain guide apparatus to opening A or opening B on the base to achieve from-the-top installation; to opening C or opening D to achieve lateral installation thus achieving flexibility and extending applicability to meet the need of different location and positioning to install, be it from the top, from the left or right.