Method for quickly retracting venetian blind

Abstract

The present invention relates to a method for quickly retracting a venetian blind. The venetian blind comprises a pull rope (5), a ladder rope (4) and slats (1), and further comprises pull rope clamping devices (2), wherein the slats (1) are divided into a plurality of groups, a pull rope clamping device (2) is arranged at the bottom of the lowermost slat (1) in each group, and the pull rope (5) is clamped by and connected to the pull rope clamping devices (2). In this way, when the pull rope is retracted, the pull rope clamping devices (2) at different heights synchronously ascend along with the pulling of the pull rope (5), thereby enabling the slats (1) to be synchronously folded upwards in segments. Thus, compared with traditional venetian blinds in which slats can only be folded upwards successively from the bottommost slat , the method provided by the present invention allows for faster folding of the slats (1), thereby facilitating rapid visual field expansion and improving light transmittance. When the venetian blind is applied within insulating glass, the risk of the slats of the venetian blind being clamped and jammed by the glass due to excessive stacking can be reduced.

Description

A method for quickly retracting venetian blinds Technical Field

[0001] The invention relates to the field of building decoration, in particular to a built-in venetian blind for a hollow glass window, and specifically to a method for quickly retracting the venetian blind. Background Art

[0002] When the blades of a venetian blind (or blind) are fully lowered, they can block sight and sunlight. At the same time, the blades can be adjusted to a horizontal state by adjusting the ladder rope (or ladder belt) that controls the flip angle of the blades. At this time, the distance between the blades increases, making the field of vision wider and the light transmittance further improved. However, adjusting the blades to a horizontal state to increase the field of vision and light transmittance is the limit of fine-tuning that can be achieved by current traditional venetian blinds (or blinds). When it is necessary to further increase the field of vision and light transmittance, it is necessary to operate the pull rope (or pull belt) to gradually pull the blades up from the bottom of the entire venetian blind (or blind) until the blades are completely moved out of sight. However, since the line of sight of an adult in a standing state is generally between 1.6 and 1.8 meters high, it takes a long time to gradually pull the blades of a venetian blind (or blind) upward from a fully extended state close to the ground. During this process, the user cannot speed up the process except waiting. Therefore, the blades of the current venetian blinds (or blinds) are inconvenient to use. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects and to provide a method and an implementation device for quickly retracting a venetian blind, thereby retaining the functions of a traditional venetian blind (or blinds) while further increasing the line of sight and light transmittance quickly and widely.

[0004] In order to achieve the above object, the present invention is achieved as follows:

[0005] A method for quickly retracting a venetian blind, the venetian blind comprising a frame, a driving device, a rotating shaft, a pull rope (5), a ladder rope (4), blades (1) and a counterweight rod (3); the driving device is arranged on the frame and connected to the rotating shaft; the blades (1) have multiple blades and are arranged vertically in the longitudinal direction; through holes are provided on the blades (1); one end of the pull rope (5) is fixed to the rotating shaft, and the other end passes through the through hole of each blade (1) from top to bottom and is connected to the counterweight rod (3); the counterweight rod (3) naturally droops under the hanging of the pull rope (5); the left and right ends of all the blades (1) are respectively passed through two sets of symmetrically arranged ladder ropes (4); the tops of the ladder ropes (4) are fixed to the frame The bottom of the pull rope clamping device (2) is fixed on the counterweight rod (3), and also includes a pull rope clamping device (2). Every 5 to 10 blades (1), a pull rope clamping device (2) is set at the bottom of the next blade (1). The pull rope clamping device (2) is located below the through hole opened in the blade (1), and the pull rope (5) is clamped and connected with the pull rope clamping device (2); in this way, when the driving device drives the rotating shaft to rotate and reel in the pull rope, the pull rope clamping devices (2) at different heights rise synchronously with the pulling of the pull rope (5), so that the multiple blades (1) arranged vertically in the longitudinal direction are synchronously retracted upward in sections due to the rising action of the pull rope clamping devices (2) arranged at intervals.

[0006] In the above-mentioned method for quickly retracting a Venetian blind, each set of ladder ropes (4) includes two main side ropes (12) arranged on the front and rear sides of a blade (1) and a plurality of auxiliary ladder rope groups corresponding to the blades (1). The top of the main side ropes (12) is fixed to the frame, and the tail of the bottom set of auxiliary ladder ropes is fixed to the counterweight rod (3). The auxiliary ladder ropes include auxiliary side ropes (13) connected to the main side ropes (12) only at their heads, and a crossbar (14) connecting the auxiliary side ropes (13) on the front and rear sides. The blades (1) are arranged on the crossbar (14).

[0007] The method for quickly folding the Venetian blinds proposed by the present invention is to provide a pull cord clamping device (2) on the blades (1) at a certain distance apart, so that the pull cord (5) can be synchronously and segmented to fold the blades (1) at different positions during the upward lifting process. In this way, compared with the traditional Venetian blinds that can only fold the blades gradually from the bottom upward, the method proposed by the present invention folds the blades (1) faster, thereby facilitating the rapid expansion of vision and improving light transmittance.

[0008] Furthermore, while proposing the above-mentioned method for quickly retracting the Venetian blinds, the present invention also proposes a "one-way unobstructed" cord clamping device (2), through which the cord (5) can be clamped by the cord clamping device (2) during the upward pulling process, thereby achieving the purpose of synchronously lifting the blades (1) in sections. When the cord (5) is released downward, the cord clamping device (2) does not work. In this way, under the action of gravity, all blades (1) are gradually unfolded like traditional Venetian blinds. In order to achieve this "one-way unobstructed" purpose, the present invention proposes two cord clamping devices (2) with different structures, which are specifically:

[0009] 1) Pull rope clamping device with movable clamping rod structure (2):

[0010] The invention comprises a frame and a clamping rod (6), the central opening of the frame is used for allowing the pull rope (5) to pass through, two symmetrical clamping rods (6) are arranged along the central axis of the opening as a symmetric axis, and a mounting hole (7) is opened on the side wall of the frame. Both ends of the clamping rod (6) are inserted into the mounting hole (7) through a pin, so that the symmetrically arranged clamping rods (6) swing up and down at the opening, and when the pull rope (5) slides up and down in the opening, friction is generated with the clamping rods (6) on both sides. Under the action of the friction between the two, the two clamping rods (6) clamp and fix the pull rope (5) from both sides.

[0011] The rope clamping device (2) of the movable clamping rod structure is provided with symmetrical limiting wedges (8) at the edge of the opening, specifically around the bottom of the two clamping rods (6). The inclined surface of the limiting wedge (8) faces the clamping rod (6). When the clamping rod (6) moves downward, the inclined surface of the limiting wedge (8) abuts against the clamping rod (6), thereby limiting the downward range of the clamping rod (6).

[0012] The rope clamping device (2) of the movable clamping rod structure is provided with symmetrical limit baffles () at the edge of the opening, specifically above the two clamping rods (6), and the limit baffles () limit the upward range of the clamping rods (6) so that the upward limit position of the clamping rods (6) is such that the two clamping rods (6) maintain a horizontal position.

[0013] 2) The rope clamping device of the rope head structure (2):

[0014] The invention comprises a frame and a clamp (10), wherein a drawstring hole (9) is provided in the middle of the frame, wherein the drawstring hole (9) allows the drawstring (5) to pass through the middle of the frame, and a clamp (10) is provided below the drawstring hole (9), wherein the projected area of ​​the clamp (10) is larger than the diameter of the drawstring hole (9), and when the drawstring (5) passes through the middle of the frame, it is clamped by the clamp (10).

[0015] The rope-drawing clamping device (2) of the rope head structure is provided with a groove on the back of the frame, and the groove is used to accommodate the clamp (10). When the clamp (10) is embedded in the groove, the bottom surface of the frame remains flush.

[0016] For the two types of rope clamping devices (2), since they need to be installed at the bottom of the blade (1), in order not to damage the blade, the upper surface of the frame of the rope clamping device (2) is designed to be an arc-shaped surface, and the side projection of the arc-shaped surface overlaps with the side projection of the blade (1).

[0017] For the complete set of venetian blinds proposed in the present invention, when it is installed in the insulating glass, it is inconvenient to disassemble it later. Considering that the venetian blinds should be prevented from shaking as much as possible during transportation, positioning pins (11) are provided at both ends of the counterweight rod (3). When the venetian blinds are installed, the positioning pins (11) are used to connect the counterweight rod (3) with the insulating glass spacers on both sides.

[0018] The above-mentioned cord clamping device (2) proposed by the present invention enables the blades (1) of the venetian blind to be divided into several groups. In this way, the time required for each group of blades (1) to be folded up simultaneously is significantly shortened. After each group of blades is folded up, the distance between each group of blades becomes several times the original distance between each two blades, and at this time, it basically no longer affects the vision or lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of the venetian blind shown in Example 1 in an unfolded state.

[0020] FIG2 is a schematic diagram of the sectional folding state of the venetian blind shown in Example 1. FIG.

[0021] FIG3 is a structural schematic diagram 1 of the drawstring clamping device (2) in Example 1.

[0022] FIG4 is a second structural diagram of the drawstring clamping device (2) in Example 1.

[0023] FIG5 is a third structural diagram of the rope clamping device (2) in Example 1.

[0024] FIG6 is a fourth structural diagram of the pull rope clamping device (2) in Example 1.

[0025] FIG7 is a structural schematic diagram 1 of the pull rope clamping device (2) in Example 2.

[0026] FIG8 is a second structural diagram of the rope clamping device (2) in Example 2.

[0027] FIG9 is a third structural diagram of the rope clamping device (2) in Example 2.

[0028] FIG10 is a schematic structural diagram of the counterweight rod (3) in Example 1 or Example 2.

[0029] FIG11 is a schematic structural diagram of a single-side blade and a ladder rope in Example 1 or Example 2. FIG. DETAILED DESCRIPTION

[0030] The present invention is further illustrated below by means of specific examples. Example 1

[0031] As shown in Figures 1 and 2, a venetian blind that can be quickly folded up comprises a frame, a driving device, a rotating shaft, a pull rope (5), a ladder rope (4), blades (1) and a counterweight rod (3). The driving device is arranged on the frame and connected to the rotating shaft. The blades (1) have multiple pieces and are arranged vertically in the longitudinal direction. Through holes are provided on the blades (1). One end of the pull rope (5) is fixed on the rotating shaft, and the other end passes through the through hole of each blade (1) from top to bottom and is connected to the counterweight rod (3). The counterweight rod (3) naturally droops under the hanging of the pull rope (5); the left and right ends of all the blades (1) are respectively passed through two sets of symmetrically arranged ladder ropes (4), and the tops of the ladder ropes (4) are fixed on the frame. The frame is fixed at the bottom on the counterweight rod (3), and also includes a rope clamping device (2). A rope clamping device (2) is provided at the bottom of the next blade (1) every 5 to 10 blades (1). The rope clamping device (2) is located below the through hole opened in the blade (1), and the rope (5) and the rope clamping device (2) are clamped and connected. In this way, when the driving device drives the rotating shaft to rotate and reel in the rope, the rope clamping devices (2) at different heights rise synchronously with the pulling of the rope (5), so that the multiple blades (1) arranged vertically in the longitudinal direction are synchronously retracted upward in sections due to the rising action of the rope clamping devices (2) arranged at intervals.

[0032] As shown in Figures 3 to 6, the above-mentioned blinds that can be quickly retracted, the cord clamping device (2) thereof includes a frame and a clamping rod (6), the central opening of the frame is used for the cord (5) to pass through, two symmetrical clamping rods (6) are set along the central axis of the opening as the symmetry axis, and mounting holes (7) are opened on the side walls of the frame. The two ends of the clamping rods (6) are inserted into the mounting holes (7) through pins. In this way, the symmetrically arranged clamping rods (6) swing up and down at the opening. When the cord (5) slides up and down in the opening, it generates friction with the clamping rods (6) on both sides. Under the action of the friction between the two, the two clamping rods (6) clamp and fix the cord (5) from both sides and can support the weight of a group of blades. When each set of blades is folded up, if the pull rope (5) is continuously pulled upward, the bottom set of blades continues to rise, and the pull rope (5) overcomes the friction of the top set of clamping rods (6) in turn until the friction of the penultimate set of clamping rods (6) continues to rise, at which point all blades (1) are stacked together. When the blades are lowered, the pull rope (5) can freely pass through the pull rope clamping device (2) until all blades are completely lowered.

[0033] Furthermore, the rope clamping device (2) is provided with symmetrical limiting wedges (8) at the edge of the opening, specifically around the bottom of the two clamping rods (6). The inclined surface of the limiting wedge (8) faces the clamping rod (6). When the clamping rod (6) moves downward, the inclined surface of the limiting wedge (8) abuts against the clamping rod (6), thereby limiting the downward range of the clamping rod (6).

[0034] Furthermore, the rope clamping device (2) is provided with symmetrical limit baffles () at the edge of the opening, specifically above the two clamping rods (6), respectively. The limit baffles () limit the upward range of the clamping rods (6), so that the upward limit position of the clamping rods (6) is that the two clamping rods (6) maintain a horizontal position. Example 2

[0035] Example 2 is an improvement based on Example 1, specifically, another form of the drawstring clamping device (2) is proposed. Therefore, except for the drawstring clamping device (2), other components in Example 2 are not described in detail.

[0036] In Example 2, the drawstring clamping device (2) includes a frame and a clamp (10), a drawstring hole (9) is provided in the middle of the frame, the drawstring hole (9) is for the drawstring (5) to pass through the middle of the frame, and a clamp (10) is provided below the drawstring hole (9), the projected area of ​​the clamp (10) being larger than the diameter of the drawstring hole (9), and when the drawstring (5) passes through the middle of the frame, it is clamped by the clamp (10).

[0037] In the rope clamping device (2) of embodiment 2, a groove is provided on the back of the frame, and the groove is used to accommodate the clamp (10). When the clamp (10) is embedded in the groove, the bottom surface of the frame remains flush.

[0038] For the above-mentioned embodiment 1 and embodiment 2, the ladder rope (4) will be improved. Specifically, each group of ladder ropes (4) includes two main side ropes (12) arranged on the front and rear sides of the blade (1) and a plurality of auxiliary ladder rope groups corresponding to the grouping of the blades (1). The top of the main side rope (12) is fixed on the frame, and the bottom is fixed on the counterweight rod (3). The auxiliary ladder rope group includes an auxiliary ladder rope (13) whose head is connected to the main side rope (12) only, and a crossbar (14) connecting the auxiliary ladder ropes (13) on the front and rear sides. The blade (1) is set on the crossbar (14).

[0039] In this way, the angles of all blades (1) can be adjusted simultaneously through the main side rope (12), and when the blades (1) are arranged in the grouped auxiliary ladder rope groups, when the pull rope (2) is retracted upward, the blades (1) of each group are not affected by the upper and lower adjacent blade groups (1).

[0040] For a complete set of venetian blinds, when they are installed in the insulating glass, it is inconvenient to disassemble them later. Considering that shaking of the venetian blinds should be avoided as much as possible during transportation, positioning pins (11) are provided at both ends of the counterweight rod (3). When the venetian blinds are installed, the positioning pins (11) are used to connect the counterweight rod (3) with the insulating glass spacers on both sides.

[0041] Through the above two embodiments, it can be seen that the present invention is based on a pull cord clamping device (2) and proposes a method for quickly folding the venetian blind. By arranging the pull cord clamping device (2) on the blades (1) at a certain distance, the blades (1) of the venetian blind can be divided into several groups. In this way, the time required for simultaneously folding each group of blades (1) is significantly shortened. Thus, compared with the traditional venetian blind that can only fold the blades from the bottom upward step by step, the method proposed by the present invention folds the blades (1) faster, thereby facilitating the rapid expansion of vision and improving light transmittance. At the same time, the present invention transforms the ladder rope (4), specifically, the ladder ropes in the traditional venetian blind are divided into groups and each ladder rope group is controlled by the main side rope, retaining the function of the transmission venetian blind to adjust the horizontal angle of the blades (1), that is, retaining the function of the traditional venetian blind to fine-tune the blades to finely adjust the vision and light transmittance.

Claims

1. A method for quickly retracting a venetian blind, the venetian blind comprising a frame, a driving device, a rotating shaft, a pull rope (5), a ladder rope (4), blades (1) and a counterweight rod (3), wherein the driving device is arranged on the frame and connected to the rotating shaft, the blades (1) have multiple blades and are arranged vertically in the longitudinal direction, through holes are provided on the blades (1), one end of the pull rope (5) is fixed on the rotating shaft, and the other end passes through the through hole of each blade (1) from top to bottom and is connected to the counterweight rod (3), and the counterweight rod (3) naturally droops under the hanging of the pull rope (5); the left and right ends of all the blades (1) are respectively passed through two sets of ladder ropes (4) arranged symmetrically, the top of the ladder rope (4) is fixed on the frame, and the bottom is fixed on the counterweight rod (3), and the method is characterized in that: It also includes a drawstring clamping device (2), the blades (1) are divided into several groups, and a drawstring clamping device (2) is provided at the bottom of the lowest blade (1) in each group, the drawstring clamping device (2) is located below the through hole opened in the blade (1), and the drawstring (5) is clamped and connected to the drawstring clamping device (2); in this way, when the driving device drives the rotating shaft to rotate and reel in the drawstring, the drawstring clamping devices (2) at different heights rise synchronously with the pulling of the drawstring (5), so that the multiple blades (1) arranged vertically in the longitudinal direction are synchronously retracted upward in sections due to the rising action of the drawstring clamping devices (2) arranged at intervals.

2. The method for quickly retracting a Venetian blind according to claim 1, wherein: Each set of ladder ropes (4) includes two main side ropes (12) arranged on the front and rear sides of the blade (1) and a plurality of auxiliary ladder rope groups corresponding to the blades (1). The top of the main side ropes (12) is fixed to the frame, and the tail of the lowest set of auxiliary ladder ropes is fixed to the counterweight rod (3). The auxiliary ladder ropes include auxiliary side ropes (13) whose heads are connected to the main side ropes (12) only, and crosspieces (14) connecting the auxiliary side ropes (13) on the front and rear sides. The blades (1) are set on the crosspieces (14).

3. The method for quickly retracting a Venetian blind according to claim 1, wherein: The drawstring clamping device (2) comprises a frame and a clamping rod (6). The frame has a central opening for allowing the drawstring (5) to pass through. Two symmetrical clamping rods (6) are arranged along the central axis of the opening as a symmetry axis. A mounting hole (7) is provided on the side wall of the frame. Both ends of the clamping rod (6) are inserted into the mounting hole (7) through a latch. In this way, the symmetrically arranged clamping rods (6) swing up and down at the opening. When the drawstring (5) slides up and down in the opening, friction is generated with the clamping rods (6) on both sides. Under the action of the friction force between the two, the two clamping rods (6) clamp and fix the drawstring (5) from both sides.

4. The method for quickly retracting the blinds according to claim 2, wherein: Symmetrical limiting wedges (8) are provided on the edges of the opening, specifically around the lower sides of the two clamping rods (6). The inclined surfaces of the limiting wedges (8) face the clamping rods (6). When the clamping rods (6) move downward, the inclined surfaces of the limiting wedges (8) abut against the clamping rods (6), thereby limiting the downward range of the clamping rods (6).

5. The method for quickly retracting the blinds according to claim 2, wherein: The edges of the opening are specifically located above the two clamping rods (6), and symmetrical limit baffles () are provided. The limit baffles () limit the upward range of the clamping rod (6), so that the upward limit position of the clamping rod (6) is that the two clamping rods (6) maintain a horizontal position.

6. The method for quickly retracting a Venetian blind according to claim 1, wherein: The drawstring clamping device (2) comprises a frame and a clamp (10). A drawstring hole (9) is provided in the middle of the frame. The drawstring hole (9) allows the drawstring (5) to pass through the middle of the frame. The clamp (10) is provided below the drawstring hole (9). The projected area of ​​the clamp (10) is larger than the diameter of the drawstring hole (9). When the drawstring (5) passes through the middle of the frame, it is clamped by the clamp (10).

7. The method for quickly retracting a Venetian blind according to claim 1, wherein: A groove is provided on the back of the frame, the groove being used to accommodate the clamp (10), and when the clamp (10) is embedded in the groove, the bottom surface of the frame remains flush.

8. The method for quickly retracting a Venetian blind according to claim 2 or 5, characterized in that: The frame of the pull rope clamping device (2) has an upper surface that is an arc-shaped surface, and the side projection of the arc-shaped surface overlaps with the side projection of the blade (1).

9. The method for quickly retracting a Venetian blind according to claim 2 or 5, characterized in that: The frame of the drawstring clamping device (2) has a pressure plate () symmetrically arranged on the top thereof, and the pressure plate () is used to fix the blade (1) in the frame of the drawstring clamping device (2).

10. The method for quickly retracting a Venetian blind according to claim 1, wherein: Positioning pins (11) are provided at both ends of the counterweight rod (3). When the blind is installed, the positioning pins (11) are used to connect the counterweight rod (3) to the window frames or door frames or insulating glass spacers on both sides.

Images