A blind limiter

Abstract

The utility model provides a shutter positioner, designs the position bead on the shutter transmission strip, is provided with the position protruding on the position bead, is provided with the position board of corresponding clamping position protruding in positioner fixed base, when operating frequency modulation rotary transmission strip, control transmission strip's turnover limit, also controls the turnover limit of shutter piece simultaneously, can effectively prevent transmission strip and shutter piece over limit rotation, simple structure, reduces the damage probability, user experience is better, is more favorable to product popularization and use.

Description

Technical Field

[0001] This utility model relates to the field of Venetian blind technology, and in particular to a Venetian blind limiter. Background Technology

[0002] The rotating rods of commercially available PVC Venetian blinds can rotate indefinitely, but the slats stop rotating once they reach their limit, while the rod continues to rotate. This can easily damage the slats or cause the rod to over-rotate and fail to return to its original position, reducing the product's lifespan and resulting in a poor user experience. Therefore, further improvements to the Venetian blind structure are needed. Utility Model Content

[0003] In view of this, the present invention provides a venetian blind limiter, which addresses the problems of the prior art by designing a limit bead to solve the existing technical problems.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A Venetian blind limiter, comprising:

[0006] The top beam is used to install the lifting and rotating components of the venetian blinds.

[0007] There are two rotating ladder rope fasteners, which are rotatably mounted on both ends of the upper beam via fastener mounting bases. Both rotating ladder rope fasteners are connected to the sides of all venetian blinds via connecting lines, which are used to rotate and pull the connecting lines to pull the venetian blinds to rotate.

[0008] A drive bar passes through the center of two rotating ladder rope holders and is fixedly connected to them;

[0009] A rotary adjuster is fixedly installed at one end of the upper beam and located outside the rotating ladder rope fixer. The transmission bar can move through the rotary adjuster and a gear is fixedly installed at the rotary adjuster. A frequency tuner is rotatably installed with an opening on the side of the rotary adjuster. The upper end of the frequency tuner is provided with a thread that is tangential to the gear for power transmission. When the frequency tuner rotates, it drives the gear to rotate, thereby driving the transmission bar to rotate.

[0010] The limiting bead is mounted on one end of the upper beam and located inside the rotating ladder rope fixer via a limiting device fixing seat. The transmission bar passes through the center of the limiting bead and is fixedly connected to it. The limiting bead is provided with a limiting protrusion, and the limiting device fixing seat is provided with a limiting plate that correspondingly locks the limiting protrusion.

[0011] Furthermore, an operating ring is provided at the bottom of the frequency tuning device, and the operating ring can be inserted into a rotating rod to operate the frequency tuning rotation.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention features a limiting bead on the drive bar of a Venetian blind, with a limiting protrusion on the bead. A corresponding limiting plate is provided inside the limiting device fixing seat to lock the limiting protrusion. When operating the frequency-controlled rotating drive bar, the rotation limit of the drive bar is controlled, which also controls the rotation limit of the Venetian blind slats. This effectively prevents the drive bar and Venetian blind slats from rotating beyond their limits. The structure is simple, reduces the probability of damage, provides a better user experience, and is more conducive to the promotion and use of the product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the Venetian blind limiter structure in this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled venetian blind limiter of this utility model.

[0016] The annotations in the attached figures are explained as follows:

[0017] Upper beam 10, rotating ladder rope fixer 30, fixer mounting base 40, transmission bar 50, rotation adjuster 60, gear 70, frequency tuner 80, operating ring 81, limit bead 90, limit protrusion 91, limiter fixing base 100, limit plate 101, rotating rod 110. Detailed Implementation

[0018] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0019] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0020] To prevent the drive bar and venetian blinds from rotating beyond their limits, the specific details of this utility model are as follows.

[0021] Combination Figure 1 , Figure 2 As shown, an embodiment of this utility model is a Venetian blind limiter, which, importantly, includes an upper beam 10 for mounting the Venetian blind lifting and rotating components.

[0022] There are two rotating ladder rope fixers 30, which are rotatably mounted at both ends of the upper beam 10 via fixer mounting bases 40. Both rotating ladder rope fixers 30 are connected to the sides of all venetian blinds via connecting lines. The rotating ladder rope fixers 30 can be rolled up and the connecting lines can be released when rotating to pull the connecting lines, thereby pulling the venetian blinds to rotate.

[0023] The transmission bar 50 passes through the center of the two rotating ladder rope holders 30 and is fixedly connected to them. The rotation of the transmission bar 50 drives the two rotating ladder rope holders 30 to rotate.

[0024] The rotary adjuster 60 is fixedly installed at one end of the upper beam 10 and located outside the rotary ladder rope fixer 30. The transmission bar 50 can move through the rotary adjuster 60 and a gear 70 is fixedly installed at the rotary adjuster 60. The rotary adjuster 60 has an opening on its side and a frequency tuner 80 is rotatably installed. The upper end of the frequency tuner 80 is provided with a thread that is tangential to the gear 70 for power transmission. When the frequency tuner 80 rotates, it drives the gear 70 to rotate, thereby driving the transmission bar 50 to rotate.

[0025] The limiting bead 90 is set at one end of the upper beam 10 and inside the rotating ladder rope fixer 30 via the limiting device fixing seat 100. The transmission bar 50 passes through the center of the limiting bead 90 and is fixedly connected to it. The limiting bead 90 is provided with a limiting protrusion 91, and the limiting device fixing seat 100 is provided with a limiting plate 101 that corresponds to locking the limiting protrusion 91.

[0026] The main feature of this invention is that a limiting bead 90 is designed on the Venetian blind drive bar 50, and a limiting protrusion 91 is provided on the limiting bead 90. A limiting plate 101 is provided in the limiting device fixing seat 100 to correspondingly lock the limiting protrusion 91. When the drive bar 50 is rotated by the frequency modulation 80, the rotation limit of the drive bar 50 is controlled, which also controls the rotation limit of the Venetian blind slats. This can effectively prevent the drive bar 50 and the Venetian blind slats from rotating beyond the limit. The structure is simple, the probability of damage is reduced, the user experience is better, and it is more conducive to the promotion and use of the product.

[0027] Furthermore, in some embodiments, such as Figure 2 As shown, to make it more convenient for users to operate the frequency modulation 80, an operation ring 81 is provided at the bottom of the frequency modulation 80. The operation ring 81 can be inserted into the rotating rod 110 to operate the frequency modulation 80 to rotate.

[0028] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A Venetian blind limiter, characterized in that, It includes: The upper beam (10) is used to install the lifting and rotating components of the venetian blinds; There are two rotating ladder rope fixers (30), which are rotatably mounted at both ends of the upper beam (10) via fixer mounting base (40). Both rotating ladder rope fixers (30) are connected to the sides of all venetian blinds via connecting lines, which are used to rotate and pull the connecting lines to pull the venetian blinds to rotate. A drive bar (50) passes through the center of two rotating ladder rope holders (30) and is fixedly connected thereto; A rotary adjuster (60) is fixedly installed at one end of the upper beam (10) and located outside the rotary ladder rope fixer (30). The transmission bar (50) can move through the rotary adjuster (60) and a gear (70) is fixedly installed at the rotary adjuster (60). A frequency tuner (80) is rotatably installed in the side opening of the rotary adjuster (60). The upper end of the frequency tuner (80) is provided with a thread that is tangential to the gear (70) for power transmission. When the frequency tuner (80) rotates, it drives the gear (70) to rotate, thereby driving the transmission bar (50) to rotate. The limiting bead (90) is set at one end of the upper beam (10) and inside the rotating ladder rope fixer (30) via the limiting device fixing seat (100). The transmission bar (50) passes through the center of the limiting bead (90) and is fixedly connected to it. The limiting bead (90) is provided with a limiting protrusion (91). The limiting device fixing seat (100) is provided with a limiting plate (101) that corresponds to locking the limiting protrusion (91).

2. The Venetian blind limiter according to claim 1, characterized in that: The frequency tuner (80) is provided with an operation ring (81) at the bottom. The operation ring (81) can be inserted into a rotating rod (110) to operate the frequency tuner (80) to rotate.

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