Swing arm roller shutter parking locking mechanism

Abstract

The utility model relates to the field of roller shutters, in particular to a swing arm roller shutter parking and locking mechanism which comprises a winding drum, curtain cloth is wound on the winding drum, a bottom rail is installed on the lower portion of the curtain cloth, a guide column is arranged below the winding drum, a guide arm is installed on the bottom rail, and the guide column extends up and down. The guide arm is provided with a positioning shaft and a guide shaft which are used for clamping the guide column to prevent the curtain cloth from being rolled when the bottom rail is lifted, the guide column is inserted between the positioning shaft and the guide shaft, the guide shaft is installed on the rear portion of the guide arm, and the positioning shaft is located above the front side of the guide shaft. The horizontal distance between the positioning shaft and the guiding shaft is smaller than or equal to the diameter of the guiding column, a guiding shaft is installed on the guiding arm and located in front of the guiding shaft, and the guiding shaft is located below the front side of the positioning shaft. The swing arm roller shutter parking locking mechanism can provide a mechanical self-locking function, and can realize self-locking when the bottom rail is pulled down and automatic unlocking when the bottom rail is folded up without additional power or complex control.

Description

Technical Field

[0001] This utility model relates to the field of roller blinds, specifically to a swing arm roller blind parking and locking mechanism. Background Technology

[0002] Roller blinds are widely used in street-side retail stores, restaurants, coffee shops, shopping malls, and supermarkets. By installing the roller blind on the outside of the window, the curtain is rolled up on the roller and provides sun shading when opened. The roller blind consists of a bracket and a roller. The curtain is wound around the roller. During installation, the roller is first installed on the bracket, and then the bracket is fixed to the wall with bolts. Then the roller is installed on the bracket. When the curtain is pulled, the roller rotates, and the spring inside the roller is compressed and stores energy. When the curtain is released, it drives the roller to rotate back, realizing the automatic winding of the curtain.

[0003] Traditional swing-arm roller blinds lack effective clamping or locking structures, making it easy for the curtain to slip unexpectedly due to external forces or the rebound force of the coil spring, making it difficult to achieve stable stopping, which needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a swing arm roller shutter parking and locking mechanism that can achieve precise positioning and smooth unlocking of the bottom rail, addressing the above-mentioned problems.

[0005] To achieve the above objectives, this utility model discloses a swing arm roller blind parking and locking mechanism, including a roller, on which a curtain is wound, and a bottom rail is installed at the lower part of the curtain. Its structural features are: a guide post is provided below the roller, a guide arm is installed on the bottom rail, the guide post extends vertically, and a positioning shaft and a guide shaft are installed on the guide arm to clamp the guide post and prevent the curtain from rolling up when the bottom rail is raised. The guide post is inserted between the positioning shaft and the guide shaft.

[0006] When the curtain needs to be unrolled, manually or with a tool, pull down the bottom rail. When the bottom rail needs to stop at a certain point, release the bottom rail. The torsion spring inside the drum will cause the curtain to retract into the drum. The curtain pulls the bottom rail upward, giving the front end of the guide arm an upward force. At this time, the positioning shaft and the guide shaft will press against the guide post, making the guide arm and the guide post perpendicular and locking the guide post, preventing the bottom rail from rising. The drum cannot continue to roll up the curtain. When the curtain needs to be rolled up, manually or with a tool, pull down the bottom rail. The bottom rail transmits a downward force to the front end of the guide arm, making the angle between the guide arm and the guide post greater than 90 degrees. At this time, the positioning shaft and the guide shaft will disengage from the guide post. Then, loosen the bottom rail appropriately, and the curtain will roll up onto the drum under the action of the torsion spring. The positioning shaft and the guide shaft lock the guide post, achieving self-locking when the bottom rail is pulled down and automatic unlocking when it is rolled up. Its structure is simple and easy to operate, effectively solving the problems of unstable positioning and difficult unlocking of traditional swing arm roller blinds. It is suitable for roller blind systems in homes and offices.

[0007] The guide shaft is installed at the rear of the guide arm, and the positioning shaft is located above and in front of the guide shaft. Utilizing the height difference and staggered front-rear layout, the guide column is securely clamped, preventing accidental slippage of the bottom rail and improving locking stability.

[0008] When the guide arm is placed horizontally, the horizontal distance between the positioning shaft and the guide shaft is less than or equal to the diameter of the guide post. This forces the guide post to be in close contact with both shafts during clamping, increasing friction to prevent slippage or dislocation and enhancing locking reliability.

[0009] A guide shaft is installed on the guide arm, located in front of the guide shaft and below the front side of the positioning shaft. When the guide arm is placed horizontally, the horizontal distance between the guide shaft and the guide shaft is greater than the diameter of the guide post. When the bottom rail is pulled down to rewind the curtain fabric, the guide post is located between the guide shaft and the guide shaft, ensuring the relative position of the guide post within the guide arm.

[0010] The rear of the guide arm is equipped with two forks, spaced apart from each other. The positioning shaft, guide shaft, and guide shaft are rotatably mounted between the two forks. The two forks distribute the force, improving the rigidity and durability of the shaft components; the rotatable mounting reduces frictional loss and ensures smooth operation.

[0011] The bottom rail extends to the left and right, and a clamping groove is provided on the front side of the bottom rail. The clamping groove is arc-shaped and open to the front. The lower part of the curtain extends into the clamping groove, and a clamping shaft is installed in the clamping groove to hold the curtain. The arc-shaped clamping groove fits the curtain and is clamped and fixed by the clamping shaft to prevent the curtain from loosening. The bottom rail is located at the back of the curtain and cannot be seen from the front of the curtain, which can hide the bottom rail and make the roller blind more beautiful.

[0012] Guide arms are installed at both ends of the bottom rail, and there are two guide posts. The two guide posts correspond to the two guide arms respectively, which can balance the force on the bottom rail and avoid unilateral deviation.

[0013] The guide column includes an installation section that extends downwards. The lower end of the installation section has a forward-extending fixed section, and the front end of the fixed section has a downward-extending sliding section. The installation section has mounting holes for bolt connection to the wall. When the guide arm slides to the fixed section, the curtain has finished rolling up. At this point, the guide shaft is located below the fixed section, limiting the bottom rail and preventing it from moving upwards further.

[0014] A mounting base is installed at the lower end of the sliding section, and the mounting base is connected to the wall by bolts. The mounting base and the fixed section are connected to the wall, so that the sliding section and the wall surface are spaced apart, which facilitates the sliding of the guide arm on the sliding section.

[0015] In summary, the beneficial effects of this utility model are as follows: by clamping the guide column with the positioning shaft and guide shaft, a mechanical self-locking function is provided, eliminating the need for additional power or complex control, achieving self-locking when the bottom rail is pulled down and automatic unlocking when it is retracted. Its simple structure and convenient operation effectively solve the problems of insecure positioning and difficult unlocking in traditional swing-arm roller blinds, making it suitable for roller blind systems in homes and offices. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure when the curtain is unfolded;

[0017] Figure 2 This is a schematic diagram of the guide arm when the curtain is unfolded;

[0018] Figure 3 This is a structural diagram of the guide arm and guide column;

[0019] Figure 4 This is a schematic diagram of the clamping groove and clamping shaft.

[0020] Figure 5 This is a schematic diagram of the guide arm when the curtain is retracted.

[0021] In the diagram: 1. Roller; 2. Curtain; 3. Guide post; 4. Bottom rail; 5. Guide arm; 6. Positioning shaft; 7. Guide shaft; 8. Fork plate; 9. Clamping groove; 10. Clamping shaft; 11. Mounting seat; 12. Sliding section; 13. Mounting section; 14. Fixing section; 15. Mounting hole; 16. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0027] A swing-arm roller blind parking and locking mechanism includes a roller drum 1, a curtain fabric 2 wound on the roller drum 1, a bottom rail 4 installed at the lower part of the curtain fabric 2, a guide post 3 located below the roller drum 1, a guide arm 5 installed on the bottom rail 4, the guide post 3 extending vertically, and a positioning shaft 6 and a guide shaft 7 installed on the guide arm 5 to clamp the guide post 3 and prevent the curtain fabric 2 from rolling up when the bottom rail 4 is raised. The guide post 3 is inserted between the positioning shaft 6 and the guide shaft 7. (See attached diagram) Figure 1 When it is necessary to unfold the curtain 2, manually or with a tool, pull down the bottom rail 4. When the bottom rail 4 needs to stop at a certain point, release the bottom rail 4. The torsion spring inside the drum 1 will drive the curtain 2 to retract into the drum 1. The curtain 2 will drive the bottom rail 4 to rise, giving the front end of the guide arm 5 an upward force. At this time, the positioning shaft 6 and the guide shaft 7 will squeeze the guide post 3 against each other. The guide arm 5 and the guide post 3 will be in a vertical state and will lock the guide post 3, preventing the bottom rail 4 from rising. The drum 1 cannot continue to roll up the curtain 2. When it is necessary to roll up the curtain 2, manually or with a tool, pull down the bottom rail 4. The bottom rail 4 will transmit a downward force to the front end of the guide arm 5, making the angle between the guide arm 5 and the guide post 3 greater than 90 degrees. At this time, the positioning shaft 6 and the guide shaft 7 will disengage from locking the guide post 3. Then, release the bottom rail 4 appropriately, and the curtain 2 will be rolled up onto the drum 1 under the action of the torsion spring. The guide post 3 is secured by the positioning shaft 6 and the guide shaft 7, achieving self-locking when the bottom rail 4 is pulled down and automatic unlocking when it is retracted. Its simple structure and convenient operation effectively solve the problems of insecure positioning and difficult unlocking in traditional swing-arm roller blinds, making it suitable for roller blind systems in homes and offices.

[0028] See attached document Figure 3 Appendix Figure 4The guide shaft 7 is installed at the rear of the guide arm 5, and the positioning shaft 6 is located above and in front of the guide shaft 7. Utilizing the height difference and staggered front-rear layout, the guide post 3 is securely clamped, preventing the bottom rail 4 from slipping unexpectedly and improving locking stability. When the guide arm 5 is placed horizontally, the horizontal distance between the positioning shaft 6 and the guide shaft 7 is less than or equal to the diameter of the guide post 3. This forces the guide post 3 to be in close contact with both shafts during clamping, increasing friction to prevent slippage or dislocation and enhancing locking reliability. A guide shaft 8 is installed on the guide arm 5, located in front of the guide shaft 7 and below and in front of the positioning shaft 6. When the guide arm 5 is placed horizontally, the horizontal distance between the guide shaft 8 and the guide shaft 7 is greater than the diameter of the guide post 3. When the bottom rail 4 is pulled down to retract the curtain fabric 2, the guide post 3 is located between the guide shaft 7 and the guide shaft 8, ensuring the relative position of the guide post 3 within the guide arm 5. The rear of the guide arm 5 is provided with two fork plates 9, which are spaced apart from each other. The positioning shaft 6, guide shaft 7, and guide shaft 8 are rotatably mounted between the two fork plates 9. The structure of the two fork plates 9 distributes the force, improves the rigidity and durability of the shafts, and the rotatable mounting reduces frictional loss and ensures smooth operation.

[0029] See attached document Figure 4 The bottom rail 4 extends to the left and right. A clamping groove 10 is provided on the front side of the bottom rail 4. The clamping groove 10 is arc-shaped and open to the front. The lower part of the curtain fabric 2 extends into the clamping groove 10. A clamping shaft 11 is installed in the clamping groove 10 to hold the curtain fabric 2. The arc-shaped clamping groove 10 fits snugly against the curtain fabric 2, and is clamped and fixed by the clamping shaft 11 to prevent the curtain fabric 2 from loosening. The bottom rail 4 is located at the rear of the curtain fabric 2 and is not visible from the front of the curtain fabric 2, thus concealing the bottom rail 4 and making the roller blind more aesthetically pleasing. Guide arms 5 are installed at both ends of the bottom rail 4. There are two guide posts 3, each corresponding to one guide arm 5, which can balance the force on the bottom rail 4 and prevent unilateral deviation.

[0030] See attached document Figure 2 The guide post 3 includes an installation section 14 that extends downwards. The lower end of the installation section 14 has a forward-extending fixed section 15, and the front end of the fixed section 15 has a downward-extending sliding section 13. The installation section 14 has mounting holes 16 for bolting to the wall. When the guide arm 5 slides to the fixed section 15, the curtain 2 has finished rolling up. At this time, the guide shaft 7 is located below the fixed section 15, limiting the bottom rail 4, preventing it from moving upwards further. A mounting seat 12 is installed at the lower end of the sliding section 13, and the mounting seat 12 is connected to the wall by bolts. The mounting seat 12 and the fixed section 15 connect to the wall, creating a gap between the sliding section 13 and the wall surface, facilitating the sliding of the guide arm 5 on the sliding section 13.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A swing arm roller blind parking and locking mechanism, comprising a roller (1), a curtain (2) wound on the roller (1), and a bottom rail (4) installed on the lower part of the curtain (2), characterized in that, The roller (1) is provided with a guide post (3) below it and a guide arm (5) is installed on the bottom rail (4). The guide post (3) extends up and down. The guide arm (5) is provided with a positioning shaft (6) and a guide shaft (7) that clamp the guide post (3) and prevent the curtain (2) from rolling up when the bottom rail (4) is lifted. The guide post (3) is inserted between the positioning shaft (6) and the guide shaft (7).

2. The swing arm roller shutter parking and locking mechanism as described in claim 1, characterized in that, The guide shaft (7) is installed at the rear of the guide arm (5), and the positioning shaft (6) is located above the front side of the guide shaft (7).

3. The swing arm roller shutter parking and locking mechanism as described in claim 2, characterized in that, When the guide arm (5) is placed horizontally, the horizontal distance between the positioning shaft (6) and the guide shaft (7) is less than or equal to the diameter of the guide post (3).

4. The swing arm roller shutter parking and locking mechanism as described in claim 2, characterized in that, The guide arm (5) is equipped with a guide shaft (8), which is located in front of the guide shaft (7) and below the front side of the positioning shaft (6). When the guide arm (5) is placed horizontally, the horizontal distance between the guide shaft (8) and the guide shaft (7) is greater than the diameter of the guide post (3).

5. The swing arm roller shutter parking and locking mechanism as described in claim 4, characterized in that, The rear of the guide arm (5) is provided with two fork plates (9), which are spaced apart from each other. The positioning shaft (6), guide shaft (7) and guide shaft (8) are rotatably installed between the two fork plates (9).

6. The swing arm roller shutter parking and locking mechanism as described in claim 1, characterized in that, The bottom rail (4) extends to the left and right. A clamping groove (10) is provided on the front side of the bottom rail (4). The clamping groove (10) is arc-shaped and open to the front. The lower part of the curtain (2) extends into the clamping groove (10). A clamping shaft (11) for clamping the curtain (2) is installed in the clamping groove (10).

7. The swing arm roller shutter parking and locking mechanism as described in claim 1, characterized in that, Guide arms (5) are installed at both ends of the bottom rail (4), and there are two guide posts (3), with the two guide posts (3) corresponding to the two guide arms (5) respectively.

8. The swing arm roller shutter parking and locking mechanism as described in claim 1, characterized in that, The guide column (3) includes an installation section (14), which extends downward. The lower end of the installation section (14) is provided with a forward-extending fixed section (15), and the front end of the fixed section (15) is provided with a downward-extending sliding section (13). The installation section (14) is provided with an installation hole (16) for connecting to the wall with bolts.

9. The swing arm roller shutter parking and locking mechanism as described in claim 8, characterized in that, The lower end of the sliding section (13) is equipped with a mounting base (12), which is connected to the wall by bolts.

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