Shutter blind locking mechanism for shutter

Abstract

The utility model discloses a shutter blind locking mechanism for a shutter, which relates to the technical field of shutter sashes, and comprises a track space positioned in a window frame and a magnetic control handle arranged outside the window frame, and a self-locking mechanism connected with a shutter blind traction rope is arranged in the track space. The self-locking mechanism comprises a moving block in sliding connection with the track space, a lock pin assembly is arranged between the moving block and the inner wall of the track space, the lock pin assembly has a locking state for limiting and fixing the moving block in the track space, and when the magnetic control handle is close to the moving block, the locking state of the lock pin assembly is released. The self-locking mechanism connected with the venetian blind traction rope is arranged in the track space of the window frame, so that the situation that the hollow louver is broken and damaged due to the fact that the magnetic control handle and the adjacent hollow louver are squeezed is avoided, and the safety of the hollow louver is improved. The space utilization rate of the container is improved, and the transportation cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of louver blades, and particularly relates to a louver curtain locking mechanism for a louver window. Background Art

[0002] A louver window generally refers to a window sash equipped with louver curtains. In a hollow glass window sash, the louver curtains are usually installed in the hollow part of the hollow glass window sash, so as to protect the louver window and prevent dust, and the louver window is adjusted by external magnetic control or other means;

[0003] However, during the transportation of hollow louver windows, when the hollow louver window is in an unbalanced state, the louver curtains inside the hollow louver window will slide, deviate or shake under the action of gravity, which is likely to cause damage or entanglement of the louver curtain blades. A common solution is to always attach the external magnetic control handle to the window frame to lock the louver curtains inside the hollow glass window sash. However, the disadvantage of this method is that the magnetic control handle forms a convex structure on the window frame. Then, during the transportation of multiple hollow louver windows, the protruding magnetic control handles are likely to be squeezed against adjacent hollow louver windows, easily causing the hollow louver windows to break. On the other hand, each protruding magnetic control handle creates a large gap between adjacent hollow louver windows, also occupying a relatively large amount of cargo space in the container, which is not conducive to the full utilization of the container space. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a louver curtain locking mechanism for a louver window to solve the above-mentioned deficiencies in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A louver curtain locking mechanism for a louver window includes an orbital space located inside the window frame and a magnetic control handle arranged outside the window frame. A self-locking mechanism connected to the louver curtain traction rope is arranged in the orbital space. The self-locking mechanism includes a moving block slidably connected to the orbital space. A locking pin assembly is arranged between the moving block and the inner wall of the orbital space. The locking pin assembly has a locking state for limiting and fixing the moving block in the orbital space. When the magnetic control handle approaches the moving block, the locking state of the locking pin assembly is released. When the magnetic control handle moves away from the moving block, the locking state of the locking pin assembly is restored.

[0007] Preferably, the magnetic control handle includes a handle block. A strong magnetic block is embedded and fixed on one side of the handle block facing the outside of the window frame. A plurality of rollers are rotatably installed on the same surface of the handle block and the strong magnetic block.

[0008] Preferably, the locking pin assembly includes a bridging box cover movably sleeved on the moving block. The locking pin assembly further includes a convex blocking unit fixed on the inner wall surface of the track space. An insertion pin rod unit capable of being adaptively clamped with the convex blocking unit is installed on the bridging box cover. A magnetic block capable of receiving the magnetic attraction of the magnetic control handle is fixedly inlaid on the bridging box cover. When the bridging box cover approaches the magnetic control handle, the insertion pin rod unit is disengaged from the convex blocking unit.

[0009] Preferably, the insertion pin rod unit includes an insertion pin rod movably inserted into the bridging box cover. The insertion pin rod unit further includes a track inclined groove formed on the moving block. A slider fixed to the insertion pin rod is slidably fitted in the track inclined groove. When the bridging box cover moves close to the magnetic control handle, the insertion pin rod retracts into the bridging box cover and is disengaged from the convex blocking unit.

[0010] Preferably, the convex blocking unit includes two track bars fixed on the inner wall surface of the track space. A limiting member is fixedly installed between the two track bars. When the end of the insertion pin rod is clamped with the limiting member, the locking pin assembly is in a locked state.

[0011] Preferably, a track groove is fixedly provided on the inner wall surface of the track space. A sliding connecting block fixed to the moving block is slidably clamped on the track groove.

[0012] Preferably, a plurality of moving wheels distributed side by side are movably installed at the bottom of the block body of the moving block.

[0013] Preferably, the bridging box cover and the moving block are connected by a reset unit. The reset unit can provide a driving force for the locking state of the locking pin assembly to be restored.

[0014] Preferably, the limiting member is a bent metal wire member. The limiting member includes a beam rod portion capable of contacting the insertion pin rod. Both ends of the beam rod portion have first bending portions. One end of the first bending portion away from the beam rod portion has a second bending portion. The second bending portion is parallel to the length direction line of the beam rod portion. One end of the second bending portion away from the first bending portion has a third bending portion. The third bending portion is perpendicular to the beam one plane formed by the beam rod portion and the first bending portion. One end of the third bending portion away from the second bending portion has a fourth bending portion contacting the track bar.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] In the present utility model, a self-locking mechanism connected to the traction rope of the louver curtain is provided in the track space of the window frame. The locking pin assembly in the self-locking mechanism has a locking state for limiting and fixing the moving block within the window frame. When the strong magnetic unit approaches the moving block, the locking state of the locking pin assembly is released. At this time, the moving block can move synchronously with the movement of the external strong magnetic block. Thus, during transportation, the magnetic control handle can be detached from the window frame. The locking pin assembly in the locking state limits and fixes the louver curtain within the hollow window body, thereby avoiding the occurrence of situations such as the louver curtain slipping, deviating, or shaking during transportation. At the same time, it also avoids the situation where the magnetic control handle squeezes against the adjacent hollow louver window, resulting in damage to the hollow louver window, improving the safety during the transportation of the hollow louver window. Moreover, the interval between adjacent hollow louver windows among the louver windows can be reduced, improving the utilization rate of the space in the cargo box and facilitating the saving of transportation costs.

[0017] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and does not represent a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the louver curtain locking mechanism for a louver window of the present utility model within the track space;

[0021] Figure 2 Structural schematic diagram of the magnetic control handle of the louver curtain locking mechanism for a louver window of the present utility model;

[0022] Figure 3 Structural schematic diagram of the latch rod unit of the louver curtain locking mechanism for a louver window of the present utility model;

[0023] Figure 4 Structural schematic diagram of the fitting and clamping state of the limiting member of the louver curtain locking mechanism for a louver window of the present utility model on the track bar;

[0024] Figure 5 Structural schematic diagram of the limiting member of the louver curtain locking mechanism for a louver window of the present utility model;

[0025] Figure 6Schematic diagram of the bridging box cover structure of a louver curtain locking mechanism for a louver window according to the present utility model;

[0026] Figure 7 Schematic diagram of the track space layout of the bridging box cover of a louver curtain locking mechanism for a louver window according to the present utility model on the window frame;

[0027] Figure 8 Schematic diagram of the layout of a louver curtain locking mechanism for a louver window according to the present utility model on the louver window;

[0028] Figure 9 Schematic diagram of the reset unit of a louver curtain locking mechanism for a louver window according to the present utility model.

[0029] Explanation of reference numerals:

[0030] 1. Track space; 2. Magnetically controlled handle; 2.1. Handle block; 2.2. Strong magnet block; 2.3. Roller; 3. Moving block; 3.1. Trajectory groove; 3.2. Sliding connection block; 4. Lock pin assembly; 4.1. Bridging box cover; 4.2. Convex blocking unit; 4.21. Trajectory bar; 4.22. Blocking limit member; 4.221. Beam rod part; 4.222. First bending part; 4.223. Second bending part; 4.224. Third bending part; 4.225. Fourth bending part; 4.3. Plug pin rod unit; 4.31. Plug pin rod; 4.32. Trajectory inclined groove; 4.33. Slide block; 4.4. Magnetic block; 6. Moving wheel; 7. Reset unit. 7.1. Step hole; 7.2. Spring; 7.3. Rod; 7.4. Block. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the field to which this disclosure pertains. The words such as "including" or "comprising" used in this disclosure mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] Please refer to FIGS. 1-9. The present utility model provides a louver locking mechanism for a louver curtain, which includes an orbital space 1 located within a window frame and a magnetic control handle 2 disposed outside the window frame. A self-locking mechanism connected to the louver traction rope is provided within the orbital space 1. The self-locking mechanism includes a moving block 3 slidably connected to the orbital space 1. A locking pin assembly 4 is disposed between the moving block 3 and the inner wall of the orbital space 1. The locking pin assembly 4 has a locked state for limiting and fixing the moving block 3 within the orbital space 1. When the magnetic control handle 2 approaches the moving block 3, the locked state of the locking pin assembly 4 is released. When the magnetic control handle 2 moves away from the moving block 3, the locked state of the locking pin assembly 4 is restored.

[0034] Specifically, the orbital space 1 is a vertical columnar space within the window frame. When the louver curtain is in a fully folded state, the moving block 3 is at the lowest position of the window frame. At this time, if the magnetic control handle 2 is removed from the window frame, the locking pin assembly 4 switches to the locked state for limiting and fixing the moving block 3 within the orbital space 1, thereby preventing the louver curtain from sliding, deviating, or shaking during transportation. When the magnetic control handle 2 approaches the moving block 3, the locked state of the locking pin assembly 4 is released, and at this time, the louver curtain can be controlled for normal use through the magnetic control handle 2.

[0035] In another embodiment provided by this application, the magnetic control handle 2 includes a handle block 2.1. A strong magnet block 2.2 is fixedly embedded on the surface of the handle block 2.1 facing the window frame. A plurality of rollers 2.3 are rotatably installed on the same surface of the handle block 2.1 and the strong magnet block 2.2.

[0036] During actual use, the rollers 2.3 reduce the moving resistance of the handle block 2.1. The strong magnet block 2.2 generates a magnetic adsorption force on the locking pin assembly 4. The strong magnet block 2.2 can be selected as a strong magnet such as a rubidium magnet. A plurality of moving wheels 6 are movably installed at the bottom of the block body of the moving block 3 in parallel distribution, thereby reducing the moving resistance of the moving block 3.

[0037] In yet another embodiment provided by the present application, the locking pin assembly 4 includes a bridging box cover 4.1 movably sleeved on the moving block 3. The moving track line of the bridging box cover 4.1 on the moving block 3 is perpendicular to the frame opening surface of the window frame. The locking pin assembly 4 further includes a convex blocking unit 4.2 fixed on the inner wall surface of the window frame. An insertion pin rod unit 4.3 capable of being adaptively clamped with the convex blocking unit 4.2 is installed on the bridging box cover 4.1. A magnetic block 4.4 capable of receiving the magnetic attraction of the magnetic control handle 2 is fixedly inlaid on the bridging box cover 4.1. When the bridging box cover 4.1 approaches the magnetic control handle 2, the insertion pin rod unit 4.3 is disengaged from the convex blocking unit 4.2;

[0038] Among them, the insertion pin rod unit 4.3 includes an insertion pin rod 4.31 movably inserted into the bridging box cover 4.1. The insertion pin rod unit 4.3 further includes a track inclined groove 4.32 opened on the moving block 3. A slider 4.33 fixed to the insertion pin rod 4.31 is slidably fitted in the track inclined groove 4.32. When the bridging box cover 4.1 moves close to the magnetic control handle 2, the insertion pin rod 4.31 retracts into the bridging box cover 4.1 and is disengaged from the convex blocking unit 4.2;

[0039] Among them, the convex blocking unit 4.2 includes two track bars 4.21 fixed on the inner wall surface of the window frame. The cross-section of the track bar 4.21 is L-shaped. The material of the track bar 4.21 is preferably aluminum or aluminum alloy. The gap space between the two track bars 4.21 is a track channel. The length direction lines of the two track bars 4.21 are both parallel to the length direction line of the track space 1. A limiting member 4.22 is fixedly installed between the two track bars 4.21. When the end of the insertion pin rod 4.31 is clamped with the limiting member 4.22, the locking pin assembly 4 is in a locked state;

[0040] During actual use, when the shutter is in a horizontal state and the shutter curtain is in a fully retracted state, at this time, the magnetic control handle 2 is withdrawn. At this time, the bridging box cover 4.1 moves in the direction close to the moving block 3. This movement is the reset movement of the bridging box cover 4.1 on the moving block 3. The moving track line of the bridging box cover 4.1 is perpendicular to the lower frame opening surface of the window frame. During the movement of the bridging box cover 4.1, at this time, the insertion pin rod 4.31 moves synchronously with the bridging box cover 4.1. At the same time, since the slider 4.33 is fixed to the insertion pin rod 4.31, during the synchronous movement of the insertion pin rod 4.31 with the bridging box cover 4.1, the slider 4.33 also slides along the track inclined groove 4.32, so that the insertion pin rod 4.31 moves outwards from the bridging box cover 4.1 until the insertion pin rod 4.31 is clamped with the convex blocking unit 4.2. At this time, the locking pin assembly 4 is in a locked state;

[0041] That is to say, the bridging box cover 4.1 is movably sleeved on the moving block 3. The bridging box cover 4.1 can reciprocate on the moving block 3 perpendicular to the frame opening surface of the window frame. The bridging box cover 4.1 has two positions on the moving block 3, namely the contraction position where the bridging box cover 4.1 is sleeved on the moving block 3 in the deepest state, and the near-disengagement position where the bridging box cover 4.1 is sleeved on the moving block 3 in the shallowest state. It should be particularly noted that when the bridging box cover 4.1 is in the near-disengagement position on the moving block 3, the bridging box cover 4.1 is still sleeved on the moving block 3. The movement of the bridging box cover 4.1 from the near-disengagement position to the contraction position is a reset movement, and the movement of the bridging box cover 4.1 from the contraction position to the near-disengagement position is a disengagement movement;

[0042] Then when the shutter is in the horizontal state and the shutter curtain is in the fully folded state, at this time, the magnetic control handle 2 is removed. At this time, the bridging box cover 4.1 will perform a reset movement, so that the latch rod 4.31 on the bridging box cover 4.1 will perform a reset movement together with the bridging box cover 4.1. While the latch rod 4.31 is performing a reset movement, the latch rod 4.31 slides along the track chute 4.32 through the slider 4.33. Thus, the latch rod 4.31 also performs an extending movement whose movement track is perpendicular to the movement track of the reset movement. The latch rod 4.31 extends out of the bridging box cover 4.1 until the latch rod 4.31 is engaged with the convex blocking unit 4.2. At this time, the locking pin assembly 4 is in a locked state;

[0043] Similarly, when the magnetic control handle 2 approaches the moving block 3, since the magnetic block 4.4 capable of receiving the magnetic attraction of the magnetic control handle 2 is fixedly inlaid on the bridging box cover 4.1, under the action of the magnetic attraction, the bridging box cover 4.1 performs a disengagement movement. At this time, while the latch rod 4.31 is performing a disengagement movement, the latch rod 4.31 slides along the track chute 4.32 through the slider 4.33. Thus, the latch rod 4.31 also performs a retracting movement whose movement track is perpendicular to the movement track of the reset movement. The latch rod 4.31 retracts into the bridging box cover 4.1, so that the latch rod 4.31 is separated from the convex blocking unit 4.2. At this time, the locked state of the locking pin assembly 4 is released.

[0044] In another embodiment provided by the present application, a track groove 3.1 is fixedly arranged on the inner wall surface of the track space 1. A sliding connection block 3.2 fixed to the moving block 3 is slidably clamped on the track groove 3.1. During actual use, the sliding connection block 3.2 moves along the track line of the track groove 3.1 as the moving block 3 moves, thereby limiting the movement of the moving block 3 on the frame opening surface perpendicular to the window frame and keeping the moving block 3 move parallel to the frame opening surface of the window frame within the track space 1.

[0045] In another embodiment provided by the present application, the bridging box cover 4.1 is connected to the moving block 3 through a reset unit 7. The reset unit 7 can provide a driving force for the restoration of the locked state of the locking pin assembly 4. Specifically, the reset unit 7 includes a stepped hole 7.1 formed in the bridging box cover 4.1. The axis line of the stepped hole 7.1 is perpendicular to the trajectory line of the reset movement of the bridging box cover 4.1. A rod 7.3 fixed to the moving block 3 penetrates through the stepped hole 7.1 movably. A stopper 7.4 located in the stepped hole 7.1 is fixed on the rod 7.3. A spring 7.2 is sleeved on the rod 7.3 movably. One end of the spring 7.2 contacts the stopper 7.4, and the other end of the spring 7.2 contacts the stepped surface of the stepped hole 7.1. During actual use, when the bridging box cover 4.1 moves away, the magnetic attraction force of the magnetic control handle 2 on the magnetic block 4.4 is much greater than the deformation resistance of the tension spring 7.2. At this time, the tension spring 7.2 is in a compressed deformation state. When the magnetic control handle 2 is withdrawn, under the action of the elastic restoring force of the tension spring 7.2, the release of the elastic potential energy of the tension spring 7.2 provides a driving force for the reset movement of the bridging box cover 4.1, and further provides a driving force for the restoration of the locked state of the locking pin assembly 4.

[0046] In another embodiment provided by the present application, a through hole is formed in the moving block 3, and a louver curtain traction rope penetrates through the through hole movably. One end of the louver curtain traction rope is fixed to the bridging box cover 4.1. The louver curtain traction rope provides a driving force for the reset movement of the bridging box cover 4.1. During actual use, when the magnetic control handle 2 approaches the moving block 3, the magnetic block 4.4 approaches the magnetic control handle 2 under the action of the magnetic attraction force, thereby driving the bridging box cover 4.1 to move in the direction of the magnetic control handle 2. During this process, the bridging box cover 4.1 overcomes the pulling force of the louver curtain traction rope and moves in the direction of the strong magnetic unit 2. When the magnetic control handle 2 moves away from the moving block 3, under the action of the pulling force of the louver curtain traction rope, the bridging box cover 4.1 returns to the initial position, and the latch rod 4.31 extends out of the bridging box cover 4.1, then the locked state of the locking pin assembly 4 is restored. In other words, the constant pulling force generated by the gravity of the louver curtain traction rope 1 provides power for the bridging box cover 4.1 to return to the contracted position.

[0047] In another embodiment provided by the present application, the blocking member 4.22 is a bent wire member. As shown in the figures in the specification drawings, the blocking member 4.22 includes a beam rod portion 4.221 that can come into contact with the bolt rod 4.31. Both ends of the beam rod portion 4.221 have a first bending portion 4.222. One end of the first bending portion 4.222 away from the beam rod portion 4.221 has a second bending portion 4.223. The second bending portion 4.223 is parallel to the length direction line of the beam rod portion 4.221. One end of the second bending portion 4.223 away from the first bending portion 4.222 has a third bending portion 4.224. The third bending portion 4.224 is perpendicular to the beam plane formed by the beam rod portion 4.221 and the first bending portion 4.222. One end of the third bending portion 4.224 away from the second bending portion 4.223 has a fourth bending portion 4.225 that comes into contact with the track bar 4.21. The entire blocking member 4.22 has an approximately U-shaped structure as a whole;

[0048] During actual use, the blocking member 4.22 is snapped into the track channel between the two track bars 4.21. The blocking member 4.22 has an elastic expansion force on the track bars 4.21, so that the blocking member 4.22 can be elastically snapped between the two track bars 4.21. The beam rod portion 4.221 forms a raised blocking structure between the two track bars 4.21. When the bridge box cover 4.1 is in the near-disengaged position on the moving block 3, at this time the bolt rod 4.31 extends between the two track bars 4.21. When the moving block 3 moves along the track space 1, the track line of the bolt rod 4.31 in the length direction of the track space 1 coincides with the length direction line of the track channel. The blocking member 4.22 is located in the track channel, that is, when the bolt rod 4.31 comes into contact with the beam rod portion 4.221 of the blocking member 4.22 located in the track channel, the beam rod portion 4.221 restricts the movement of the bolt rod 4.31 in the track channel, indirectly restricting the movement of the moving block 3. At this time, the locking pin assembly 4 is in a locked state;

[0049] It should be particularly noted that the included angle between the fourth bending portion 4.225 and the third bending portion 4.224 is 145 degrees. When an extrusion force occurs between the beam rod portion 4.221 and the bolt rod 4.31, at this time the bolt rod 4.31 is located outside the U-shaped portion of the blocking member 4.22. The direction of the force received by the blocking member 4.22 is towards the direction where the fourth bending portion 4.225 is located. Therefore, the blocking member 4.22 is subjected to the force of the bolt rod 4.31, causing the U-shaped opening of the blocking member 4.22 to have a tendency to expand outwards, thereby further improving the stability of the blocking member 4.22 in the track channel. In other words, the blocking member 4.22 is subjected to the force of the bolt rod 4.31 along the force track space 1 towards the top of the window frame, causing the U-shaped end of the U-shaped blocking member 4.22 to have a tendency to expand outwards.

[0050] Only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, for those of ordinary skill in the art, various modifications can be made to the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A venetian blind locking mechanism for a venetian blind, comprising a track space (1) located in a window frame and a magnetically controlled handle (2) arranged outside the window frame, characterized in that: A self-locking mechanism connected to the venetian blind traction rope is provided in the track space (1), the self-locking mechanism comprises a moving block (3) slidably connected to the track space (1), a locking pin assembly (4) is provided between the moving block (3) and the inner wall of the track space (1), the locking pin assembly (4) has a locking state for limiting and fixing the moving block (3) in the track space (1), the locking state of the locking pin assembly (4) is released when the magnetic control handle (2) is close to the moving block (3), and the locking state of the locking pin assembly (4) is restored when the magnetic control handle (2) is away from the moving block (3).

2. The venetian blind locking mechanism for a venetian blind according to claim 1, characterized in that: The magnetic control handle (2) comprises a handle block (2.1), a strong magnetic block (2.2) being embedded and fixed on a surface of the handle block (2.1) facing the outside of the window frame, and a plurality of rollers (2.3) being rotatably mounted on the same surface of the handle block (2.1) and the strong magnetic block (2.2).

3. The venetian blind locking mechanism for a venetian blind according to claim 1, characterized in that: The lock pin assembly (4) comprises a bridge housing (4.1) movably sleeved on the moving block (3), and the lock pin assembly (4) further comprises a convex stop unit (4.2) fixed on the inner wall surface of the track space (1); a latch rod unit (4.3) capable of being matched and engaged with the convex stop unit (4.2) is mounted on the bridge housing (4.1); a magnetic block (4.4) capable of receiving the magnetic attraction of the magnetic control handle (2) is fixedly embedded on the bridge housing (4.1); when the bridge housing (4.1) and the magnetic control handle (2) are close to each other, the latch rod unit (4.3) and the convex stop unit (4.2) are separated.

4. The venetian blind locking mechanism for a venetian blind according to claim 3, characterized in that: The latch rod unit (4.3) comprises a latch rod (4.31) movably plugged with the bridge box cover (4.1), and the latch rod unit (4.3) further comprises a track bevel groove (4.32) provided on the moving block (3), a sliding block (4.33) fixed to the latch rod (4.31) is slidably adapted in the track bevel groove (4.32), and when the bridge box cover (4.1) moves close to the magnetic control handle (2), the latch rod (4.31) is retracted into the bridge box cover (4.1) and is separated from the convex stop unit (4.2).

5. The venetian blind locking mechanism for a venetian blind according to claim 4, characterized in that: The convex stop unit (4.2) comprises two track bars (4.21) fixed to the inner wall surface of the track space (1), a stop member (4.22) is fixedly installed between the two track bars (4.21), and when the end of the latch rod (4.31) is engaged with the stop member (4.22), the lock pin assembly (4) is in a locked state.

6. The venetian blind locking mechanism for a venetian blind according to claim 5, characterized in that: A track groove (3.1) is fixedly arranged on the inner wall surface of the track space (1), and a sliding block (3.2) fixed to the moving block (3) is slidably engaged on the track groove (3.1).

7. The venetian blind locking mechanism for a venetian blind according to claim 6, characterized in that: A plurality of parallel distributed moving wheels (6) are movably mounted on the bottom of the moving block (3).

8. The venetian blind locking mechanism for a venetian blind according to claim 4, characterized in that: The bridging box cover (4.1) is connected to the moving block (3) via a reset unit (7), and the reset unit (7) can provide a driving force for restoring the locking state of the locking pin assembly (4).

9. The venetian blind locking mechanism for a venetian blind according to claim 5, characterized in that: The blocking member (4.22) is a metal wire bending member, and the blocking member (4.22) comprises a beam portion (4.221) capable of contacting the latch rod (4.31), both ends of the beam portion (4.221) have a first bending portion (4.222), one end of the first bending portion (4.222) away from the beam portion (4.221) has a second bending portion (4.223), and the length of the second bending portion (4.223) and the beam portion (4.221) is 1 / 4 of the length of the beam portion (4.221). The second bending portion (4.223) is parallel to a degree direction line, one end of the second bending portion (4.223) away from the first bending portion (4.222) has a third bending portion (4.224), the third bending portion (4.224 is perpendicular to a beam plane formed by the beam rod portion (4.221) and the first bending portion (4.222), and one end of the third bending portion (4.224) away from the second bending portion (4.223) has a fourth bending portion (4.225) in contact with the track bar (4.21).

Images