Fire resistant roller shutter self-locking construction for integrated windows

Abstract

This invention discloses a self-locking structure for a fireproof roller shutter used in an integrated window, relating to the field of door and window machinery technology. It includes: a fixed base; an active rotating shaft slidably mounted on the fixed base, having an initial position, a first position, and a second position along its sliding stroke; a driven rotating shaft slidably connected coaxially with the active rotating shaft; a locking member having a locking position that abuts against and locks the driven rotating shaft along its active stroke; a passive triggering component that receives a forward drive from the active rotating shaft to slide the active rotating shaft from the initial position to the first position, and receives a reverse drive from the active rotating shaft to slide the active rotating shaft from the initial position to the second position; and a transmission component that receives a sliding drive from the active rotating shaft to move the locking member. When the active rotating shaft is at the initial position, the active rotating shaft, through the transmission component, moves the locking member to the locking position; when the active rotating shaft slides to the first or second position, the active rotating shaft, through the transmission component, disengages the locking member from the locking position.

Description

Technical Field

[0001] This invention relates to the field of door and window machinery technology, specifically to a fireproof roller shutter self-locking structure for an integrated window. Background Technology

[0002] Fire-resistant roller shutters for integrated windows are made of fire-resistant materials, rolled into a cylinder, and raised and lowered manually or electrically. They serve to provide shade, privacy, and prevent the spread of fire through the window. The self-locking mechanism of the fire-resistant roller shutter allows it to remain locked at any height during raising and lowering.

[0003] The patent, CN210152528U, entitled "An Anti-theft Roller Shutter Door," includes a roller shutter door and a roller shutter door motor for driving the roller shutter door's raising and lowering. The roller shutter door motor is a brake motor, and its electromagnetic brake is connected to a trigger. The trigger is linked to a lock to control the lock's opening and closing action. The lock is connected to the roller shutter door to lock it. The roller shutter door motor uses a brake motor, and the braking action of the brake motor triggers the roller shutter door lock, thus automatically locking and unlocking the roller shutter door. It features a simple structure, convenient operation, low cost, and good anti-theft effect.

[0004] The roller shutter door in the aforementioned patent is locked by an electromagnetic brake on a brake motor. Its drawbacks are: there are strict restrictions on the type of motor used, that is, only brake motors can be used, and ordinary servo motors cannot be used. The purchase cost of brake motors is much higher than that of ordinary servo motors. Moreover, the electromagnetic brake of the brake motor is built into the motor housing, which makes maintenance difficult. Usually, if either the motor body or the electromagnetic brake is damaged, both need to be replaced, that is, the entire brake motor needs to be replaced, resulting in high maintenance costs. Summary of the Invention

[0005] The purpose of this invention is to provide a fireproof roller shutter self-locking structure for integrated windows to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-locking structure for a fireproof roller shutter for an integrated window, comprising: a fixed base; an active rotating shaft, which is slidably disposed on the fixed base along the axial direction, having an initial position, a first position, and a second position along its sliding stroke, the first position and the second position being symmetrical about the initial position; a driven rotating shaft, which is rotatably disposed on the fixed base, the driven rotating shaft being slidably connected to the active rotating shaft coaxially; and a locking member, which is movably disposed on the fixed base, the locking member having a locking mechanism that abuts against the side of the driven rotating shaft along its moving stroke. Stop station; passive triggering component, which is assembled to: receive the drive of the active rotating shaft to rotate forward so that the active rotating shaft slides from the initial station to the first station, and receive the drive of the active rotating shaft to rotate in reverse so that the active rotating shaft slides from the initial station to the second station; transmission component, which receives the sliding drive of the active rotating shaft to move the locking element, wherein when the active rotating shaft is at the initial station, the active rotating shaft moves the locking element to the locking station through the transmission component, and when the active rotating shaft slides to the first station or the second station, the active rotating shaft moves the locking element out of the locking station through the transmission component.

[0007] Furthermore, the locking component includes a rotating rod, one end of which is a locking end, and the position where the locking end is closest to the driven rotating shaft during the rotation stroke of the rotating rod is the locking position.

[0008] Furthermore, the transmission assembly includes: a first rod fixedly connected to the drive shaft; a second rod, the middle of which is rotatably mounted on a fixed seat, one end of which is slidably and rotatably connected to the first rod; and a third rod, one end of which is rotatably connected to the other end of the second rod, and the other end of which is connected to the end of the rotating rod away from the locking end.

[0009] Furthermore, the passive triggering component includes a sleeve fixedly connected to a fixed base, the sleeve being movably fitted onto the active rotating shaft, the inner wall of the sleeve having two annular grooves coaxial with the active rotating shaft, and the inner wall of the sleeve having multiple spiral grooves distributed in a circumferential array, each spiral groove having two ends connected to an annular groove, and the adjacent ends of two adjacent spiral grooves forming a convex arc; the circumference of the active rotating shaft is provided with multiple sliding balls, each sliding ball being slidably connected to each spiral groove in a one-to-one correspondence; when the active rotating shaft is in the initial position, each sliding ball is located in the middle of the corresponding spiral groove; when the active rotating shaft slides to the first position, each sliding ball slides into one of the annular grooves; when the active rotating shaft slides to the second position, each sliding ball slides into another annular groove.

[0010] Furthermore, each of the aforementioned ball bearings is tactilely embedded on the active rotating shaft, and each ball bearing is tactilely connected to the corresponding spiral groove and annular groove.

[0011] Furthermore, the passive triggering component also includes an elastic reset unit, which is configured such that when the active rotating shaft loses its driving force, the elastic force of the elastic reset unit drives the sliding part to slide to the initial position.

[0012] Furthermore, the elastic reset unit includes a sleeve fixedly connected to a fixed base, a sliding rod slidably disposed inside the sleeve, the rotation axis of the second rod being located in the sliding direction of the sliding rod, a connecting rod rotatably connected to the end of the sliding rod away from the sleeve, the other end of the connecting rod being rotatably connected to the end of the second rod away from the first rod, and a spring disposed between the sliding rod and the sleeve, the elastic force of the spring driving the sliding rod to slide away from the direction of active rotation.

[0013] Furthermore, the active rotating shaft has a sliding section, and the driven rotating shaft has a sliding groove, with the sliding section slidably disposed within the sliding groove.

[0014] Furthermore, the locking end is a brake block, and a brake ring is provided on the circumference of the driven shaft. When the locking component is in the locking position, the brake block and the brake ring abut against each other and lock.

[0015] Furthermore, the locking end is an elastic tooth, and an elastic groove is provided on the circumference of the driven rotating shaft. When the locking member is in the locking position, the elastic tooth engages with the elastic groove.

[0016] In the above technical solution, the fireproof roller shutter self-locking structure for integrated windows provided by the present invention does not require a dedicated brake motor. For ordinary servo motors without brake function, it is only necessary to drive the active shaft to rotate through its power output end. When the active shaft is in the initial position and not rotating, the active shaft, through the transmission component, positions the locking member in the locking position. The locking member abuts against the driven shaft, thereby stopping the rotation of the driven shaft and the fireproof roller shutter wound on the driven shaft and locking it at the current height. When the active shaft rotates forward, the passive trigger component slides the active shaft from the initial position to the first position. The active shaft, through the transmission component, disengages the locking member from the locking position, and the locking member does not... When the driven shaft is locked again, the active shaft can drive the driven shaft to rotate forward to roll up the fireproof roller shutter. When the active shaft rotates in reverse, the passive triggering component slides the active shaft from the initial position to the second position. The active shaft, through the transmission component, causes the locking element to disengage from the locking position. The locking element no longer locks the driven shaft, and the active shaft can then drive the driven shaft to rotate forward to release the fireproof roller shutter. After the active shaft stops rotating, the passive triggering component slides the main shaft from the first or second position back to the initial position. Thus, the active shaft, through the transmission component, causes the locking element to move back to the locking position to lock the driven shaft. The fireproof roller shutter cannot be rolled up or released, and the lifting height of the fireproof roller shutter is locked. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1-2 This is a schematic diagram of the structure at the initial working position provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the active rotating shaft provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the sleeve structure provided in an embodiment of the present invention;

[0021] Figure 5-6 A cross-sectional view of the sleeve provided in an embodiment of the present invention;

[0022] Figure 7 This is a cross-sectional view of the elastic reset unit provided in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure at the first working station according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure at the first working station according to an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the assembly and use provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Fixed base; 2. Active rotating shaft; 3. Driven rotating shaft; 4. Locking component; 4.1. Rotating rod; 4.2. Locking end; 5. Passive triggering assembly; 5.1. Sleeve; 5.2. Annular groove; 5.3. Spiral groove; 5.4. Sliding ball; 5.5. Elastic reset unit; 5.51. Sleeve; 5.52. Sliding rod; 5.53. Connecting rod; 5.54. Spring; 6. Transmission assembly; 6.1. First rod; 6.2. Second rod; 6.3. Third rod; 6.4. Rotating shaft; 7. Fireproof roller shutter; 8. Servo motor. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1-10This invention provides a self-locking structure for a fireproof roller shutter 7 for an integrated window, comprising a fixed base 1, a driving shaft 2, a driven shaft 3, a passive triggering component 5, and a transmission component 6. The driving shaft 2 is axially slidably mounted on the fixed base 1 and is driven by a servo motor 8. Its sliding stroke includes an initial position, a first position, and a second position, with the first and second positions symmetrical about the initial position. The driven shaft 3 is rotatably mounted on the fixed base 1 and is coaxially slidably connected to the driving shaft 2. Specifically, the driving shaft 2 has a sliding section, and the driven shaft 3 has a sliding groove. The sliding section is slidably mounted within the sliding groove. The driven shaft 3 is used to wind the fireproof roller shutter 7 or drive the roller shutter. The roller of the fireproof roller shutter 7 rotates around the roller; the locking member 4 is movably mounted on the fixed base 1, and the moving stroke of the locking member 4 has a locking position that abuts against the side of the locking driven rotating shaft 3; the passive triggering component 5 is assembled to: receive the drive of the active rotating shaft 2 to rotate forward so that the active rotating shaft 2 slides from the initial position to the first position, and receive the drive of the active rotating shaft 2 to rotate in reverse so that the active rotating shaft 2 slides from the initial position to the second position; the transmission component 6 receives the sliding drive of the active rotating shaft 2 to move the locking member 4. When the active rotating shaft 2 is in the initial position, the active rotating shaft 2 moves the locking member 4 to the locking position through the transmission component 6. When the active rotating shaft 2 slides to the first position or the second position, the active rotating shaft 2 moves the locking member 4 out of the locking position through the transmission component 6.

[0030] In the above technical solution, the fireproof roller shutter 7 for an integrated window provided by the present invention has a self-locking structure that does not require a dedicated brake motor. For a common servo motor 8 without a brake function, it is only necessary to drive the active shaft 2 to rotate through its power output end. When the active shaft 2 is in the initial position and not rotating, the active shaft 2, through the transmission component 6, keeps the locking member 4 in the locking position. The locking member 4 abuts against the driven shaft 3, thereby stopping the rotation of the driven shaft 3 and the fireproof roller shutter 7 wound on the driven shaft 3 and locking it at the current height. When the active shaft 2 rotates forward, the passive trigger component 5 slides the active shaft 2 from the initial position to the first position. The active shaft 2, through the transmission component 6, disengages the locking member 4 from the locking position, and the locking member 4 no longer locks. When the driven shaft 3 stops rotating, the active shaft 2 can drive the driven shaft 3 to rotate forward to roll up the fireproof roller shutter 7. When the active shaft 2 rotates in reverse, the passive trigger component 5 slides the active shaft 2 from the initial position to the second position. The active shaft 2, through the transmission component 6, causes the locking member 4 to disengage from the locking position. The locking member 4 no longer locks the driven shaft 3, and the active shaft 2 can then drive the driven shaft 3 to rotate forward to release the fireproof roller shutter 7. After the active shaft 2 stops rotating, the passive trigger component 5 slides the main shaft shaft back from the first position or the second position to the initial position. Thus, the active shaft 2, through the transmission component 6, causes the locking member 4 to move back to the locking position to lock the driven shaft 3. The fireproof roller shutter 7 can no longer be rolled up or released, and the lifting height of the fireproof roller shutter 7 is locked.

[0031] In another embodiment of the present invention, the locking member 4 includes a rotating rod 4.1, one end of which is a locking end 4.2. The position of the locking end 4.2 closest to the driven rotating shaft 3 during the rotational stroke of the rotating rod 4.1 is the locking position. Preferably, the locking end 4.2 is a brake block, and a brake ring is provided on the circumference of the driven rotating shaft 3. When the locking member 4 is in the locking position, the brake block and the brake ring abut against each other and lock. Another preferred embodiment is that the locking end 4.2 is an elastic locking tooth, and an elastic locking groove is provided on the circumference of the driven rotating shaft 3. When the locking member 4 is in the locking position, the elastic locking tooth engages with the elastic locking groove.

[0032] Preferably, the transmission assembly 6 includes a first rod 6.1, a second rod 6.2, and a third rod 6.3. The first rod 6.1 is fixedly connected to the drive shaft 2. The middle part of the second rod 6.2 is rotatably mounted on the fixed seat 1. One end of the second rod 6.2 is slidably and rotatably connected to the first rod 6.1. Specifically, the first rod 6.1 has a straight sliding groove, the length direction of which is perpendicular to the axial direction of the drive shaft 2. The end of the second rod 6.2 has a sliding column that is rotatably mounted in the sliding groove. One end of the third rod 6.3 is rotatably connected to the other end of the second rod 6.2 (the end away from the first rod 6.1). The other end of the third rod 6.3 is connected to the end of the rotating rod 4.1 away from the locking end 4.2.

[0033] More preferably, the passive triggering component 5 includes a sleeve 5.1 fixedly connected to the fixed base 1. The sleeve 5.1 is movably sleeved on the active rotating shaft 2. Two annular grooves 5.2 coaxial with the active rotating shaft 2 are opened on the inner wall of the sleeve 5.1. A plurality of spiral grooves 5.3 distributed in a circumferential array are opened on the inner wall of the sleeve 5.1. Each end of each spiral groove 5.3 is connected to an annular groove 5.2. The adjacent ends of two adjacent spiral grooves 5.3 form a convex arc shape. Multiple sliding balls 5.4 are arranged around the periphery of the drive shaft 2. Each sliding ball 5.4 is slidably connected to a corresponding spiral groove 5.3. Preferably, each sliding ball 5.4 is rolled and embedded on the drive shaft 2, and each sliding ball 5.4 is rolled and connected to the corresponding spiral groove 5.3 and annular groove 5.2. When the drive shaft 2 is in the initial position, each sliding ball 5.4 is located in the middle of the corresponding spiral groove 5.3. When the drive shaft 2 slides to the first position, each sliding ball 5.4 slides into one of the annular grooves. 5.2 When the active rotating shaft 2 slides to the second working position, each sliding ball 5.4 slides to another annular groove 5.2; the passive triggering component 5 also includes an elastic reset unit 5.5, which is assembled such that when the active rotating shaft 2 loses its driving force, the elastic force of the elastic reset unit 5.5 drives the sliding part to slide to the initial working position. Specifically, the elastic reset unit 5.5 includes a sleeve 5.51 fixedly connected to the fixed base 1. A sliding rod 5.52 is slidably arranged inside the sleeve 5.51. The rotating shaft 6.4 of the second rod 6.2 is located in the sliding direction of the sliding rod 5.52. A connecting rod 5.53 is rotatably connected to one end of the sliding rod 5.52 away from the sleeve 5.51. The other end of the connecting rod 5.53 is rotatably connected to one end of the second rod 6.2 away from the first rod 6.1. A spring 5.54 is arranged between the sliding rod 5.52 and the sleeve 5.51. The elastic force of the spring 5.54 drives the sliding rod 5.52 to slide away from the active rotation.

[0034] In this embodiment, when the active shaft 2 is in the initial position, each sliding ball 5.4 is located in the middle of the corresponding spiral groove 5.3, and the locking member 4 is in the locking position. The driven main shaft is locked by the locking member 4, and the fireproof roller shutter 7 cannot be rolled up or released. When the active shaft 2 just starts to rotate forward, the active shaft 2 drives the sliding balls 5.4 on it to slide in the corresponding spiral groove 5.3, thereby causing the active shaft 2 to slide to the first position. The main shaft drives the locking member 4 to rotate through the first rod 6.1, the second rod 6.2 and the third rod 6.3, causing the locking member 4 to rotate away from the locking position. The driven shaft 3 is then unlocked. At this time, each sliding ball 5.4 slides into one of the annular grooves 5.2, and the servo motor 8... The active shaft 2 continues to rotate clockwise, and each sliding ball 5.4 slides within its corresponding annular groove 5.2. The active shaft 2 drives the driven shaft 3 to rotate clockwise, thereby retracting the fireproof roller shutter 7. When the fireproof roller shutter 7 is retracted to the appropriate position, the servo motor 8 stops. At this time, the elastic force of the spring 5.54 drives the slide rod 5.52 to slide away from the active rotation. The slide rod 5.52 pulls the second rod 6.2 to rotate through the connecting rod 5.53. During the rotation of the second rod 6.2, the slide rod 5.52 slides back to the initial position through the first rod 6.1. At this time, the slide rod 5.52, connecting rod 5.53, second rod 6.2 and first rod 6.1 are on the same straight line, and the transmission assembly 6 also drives... When the moving locking member 4 rotates to the locking position, the driven rotating shaft 3 is locked by the locking member 4, and the roller shutter is locked at the current height position. When the driving rotating shaft 2 starts to reverse, the driving rotating shaft 2 drives the sliding ball 5.4 on it to slide in the corresponding spiral groove 5.3, thereby causing the driving rotating shaft 2 to slide to the second position. The main shaft drives the locking member 4 to rotate through the first rod 6.1, the second rod 6.2 and the third rod 6.3, causing the locking member 4 to rotate away from the locking position, and the driven rotating shaft 3 is unlocked. At this time, each sliding ball 5.4 slides into another annular groove 5.2. The servo motor 8 continues to drive the driving rotating shaft 2 to reverse, and each sliding ball 5.4 slides in its respective annular groove 5.2. The driving rotating shaft 2 drives the driven rotating shaft 3 to rotate in reverse. The rotating shaft 3 reverses to release the fireproof roller shutter 7. When the fireproof roller shutter 7 is released to the appropriate position, the servo motor 8 stops. At this time, the elastic force of the spring 5.54 drives the slide rod 5.52 to slide away from the active rotation. The slide rod 5.52 pulls the second rod 6.2 to rotate through the connecting rod 5.53. During the rotation of the second rod 6.2, the slide rod 5.52 slides back to the initial position through the first rod 6.1. At this time, the slide rod 5.52, the connecting rod 5.53, the second rod 6.2 and the first rod 6.1 are on the same straight line. The transmission component 6 also drives the locking component 4 to rotate to the locking position. The driven rotating shaft 3 is locked by the locking component 4, and the roller shutter is locked at the current height position.

[0035] The fireproof roller shutter 7 provided by the present invention has a self-locking structure. Regardless of whether the active rotating shaft 2 rotates forward or backward, the active rotating shaft 2 unlocks the driven rotating shaft 3 in the initial stage of rotation. When the active rotating shaft 2 stops rotating, the elastic reset unit 5.5 drives the active rotating shaft to slide to the initial position and locks the driven rotating shaft 3 immediately.

[0036] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-locking structure for a fireproof roller shutter used in an integrated window, characterized in that, include: Fixed base; The active rotating shaft is slidably mounted on the fixed base along the axial direction. Its sliding stroke has: an initial station, a first station, and a second station. The first station and the second station are symmetrical about the initial station. The driven shaft is rotatably mounted on a fixed base, and the driven shaft and the driving shaft are slidably connected coaxially. The locking component is movably mounted on the fixed base, and has a locking position that abuts against the side of the driven shaft during its active stroke. A passive triggering component is assembled to: receive a drive for the active shaft to rotate forward so that the active shaft slides from the initial station to the first station, and receive a drive for the active shaft to rotate in reverse so that the active shaft slides from the initial station to the second station; The transmission assembly receives the sliding drive of the drive shaft to move the locking element. When the drive shaft is in the initial position, the drive shaft moves the locking element to the locking position through the transmission assembly. When the drive shaft slides to the first or second position, the drive shaft moves the locking element out of the locking position through the transmission assembly. The locking component includes a rotating rod, one end of which is a locking end, and the position where the locking end is closest to the driven shaft during the rotation stroke of the rotating rod is the locking position. The transmission assembly includes: The first member is fixedly connected to the drive shaft; The second member has its middle part rotatably mounted on the fixed base, and one end of it is slidably and rotatably connected to the first member. The third rod has one end rotatably connected to the other end of the second rod, and the other end connected to the end of the rotating rod away from the locking end; The passive triggering component includes a sleeve fixedly connected to a fixed base. The sleeve is movably fitted onto the active rotating shaft. Two annular grooves coaxial with the active rotating shaft are formed on the inner wall of the sleeve. Multiple spiral grooves arranged in a circumferential array are also formed on the inner wall of the sleeve. Each spiral groove's two ends communicate with an annular groove, and the adjacent ends of two adjacent spiral grooves form a convex arc. Multiple sliding balls are arranged around the periphery of the active rotating shaft, each sliding ball corresponding to one of the spiral grooves. When the active rotating shaft is in the initial position, each sliding ball is located in the middle of its corresponding spiral groove. When the active rotating shaft slides to the first position, each sliding ball slides into one of the annular grooves. When the active rotating shaft slides to the second position, each sliding ball slides into another annular groove.

2. The fireproof roller shutter self-locking structure for an integrated window according to claim 1, characterized in that, Each of the aforementioned ball bearings is tactilely embedded on the active rotating shaft, and each ball bearing is tactilely connected to the corresponding spiral groove and annular groove.

3. The fireproof roller shutter self-locking structure for an integrated window according to claim 1, characterized in that, The passive triggering component also includes an elastic reset unit, which is configured such that when the active rotating shaft loses its driving force, the elastic force of the elastic reset unit drives the sliding part to slide to the initial position.

4. The fireproof roller shutter self-locking structure for an integrated window according to claim 3, characterized in that, The elastic reset unit includes a sleeve fixedly connected to a fixed base. A sliding rod is slidably disposed inside the sleeve. The rotation axis of the second rod is located in the sliding direction of the sliding rod. A connecting rod is rotatably connected to the end of the sliding rod away from the sleeve. The other end of the connecting rod is rotatably connected to the end of the second rod away from the first rod. A spring is disposed between the sliding rod and the sleeve. The elastic force of the spring drives the sliding rod to slide away from the direction of active rotation.

5. The fireproof roller shutter self-locking structure for an integrated window according to claim 1, characterized in that, The driving shaft has a sliding section, and the driven shaft has a sliding groove, with the sliding section slidably disposed within the sliding groove.

6. The fireproof roller shutter self-locking structure for an integrated window according to claim 1, characterized in that, The locking end is a brake block, and a brake ring is provided on the circumference of the driven shaft. When the locking component is in the locking position, the brake block and the brake ring abut against each other and lock.

7. The fireproof roller shutter self-locking structure for an integrated window according to claim 1, characterized in that, The locking end is an elastic locking tooth, and the peripheral side of the driven rotating shaft is provided with an elastic locking groove. When the locking component is in the locking position, the elastic locking tooth engages with the elastic locking groove.

Images