Ladder rope holder for venetian blinds

Abstract

The invention provides a ladder rope fixing device, which comprises a support base and a rotating base. The support base has a bottom wall and two opposite standing walls, the two ends of the bottom wall each have a resilient support part protruding from the bottom surface, the standing walls are connected to the two opposite sides of the bottom wall, and the standing walls each have a pivot slot, the slot wall of one pivot slot has a positioning protrusion, the rotating base has a pivot shaft and a ladder rope fixing part provided on the pivot shaft, the two ends of the pivot shaft are pivotally provided in the pivot slots of the support base, and the outer circumferential surface of the pivot shaft has a plurality of positioning recesses arranged in a ring shape at equal intervals. Thus, when the rotating base rotates relative to the support base, the positioning recesses are sequentially engaged with the positioning protrusion of the support base, and the support base is allowed to elastically deform through the resilient support parts when the two are not engaged with each other, so that a clear segmental feeling is generated.

Description

Technical Field

[0001] This invention relates to Venetian blinds, and more particularly to a ladder rope fastener for Venetian blinds. Background Technology

[0002] In the case of typical Venetian blinds, when all the slats are extended, they can tilt relative to the upper beam due to the movement of the ladder ropes, providing a light-blocking effect. Furthermore, the top of the aforementioned ladder ropes is fixed to a rotating base. When the rotating base is driven by a drive shaft and rotates relative to a support base, it simultaneously drives the ladder ropes, causing all the slats to tilt relative to the upper beam. However, traditional rotating bases rotate relative to the support base in a smooth and seamless manner, which can easily affect the user's feel when adjusting the slat angle. Summary of the Invention

[0003] The main objective of this invention is to provide a ladder rope fastener for Venetian blinds, which has a distinct sense of segmentation during operation.

[0004] To achieve the aforementioned main objectives, the ladder rope fastener of the present invention includes a support base and a rotating base. The support base has a bottom wall and two opposing vertical walls. Each end of the bottom wall has an elastic support portion protruding from the bottom surface of the bottom wall. The vertical walls are connected to the two opposing sides of the bottom wall, and each vertical wall has a pivot groove, wherein the groove wall of one pivot groove has a positioning protrusion. The rotating base has a pivot and a ladder rope fastening portion disposed on the pivot. Both ends of the pivot are pivotally disposed in the pivot grooves of the support base, and the outer peripheral surface of the pivot has a plurality of positioning grooves arranged in an equally spaced ring.

[0005] As can be seen from the above, when the rotating seat rotates relative to the support seat, the positioning grooves take turns engaging with the positioning protrusions of the support seat, and when the two are not engaged, the support seat is allowed to undergo elastic deformation through the elastic support parts, thus producing a clear sense of segmentation.

[0006] Optionally, the pivot has a shaft portion and two disc portions. The shaft portion is pivotally disposed in the pivot grooves of the support base, and the pivot grooves have positioning recesses. The disc portions are connected to both ends of the shaft portion and located on the outer side of the vertical walls of the support base. The outer diameter of the disc portions is larger than the outer diameter of the shaft portion and the groove diameter of the pivot grooves to prevent the pivot from disengaging from the pivot grooves in the horizontal direction.

[0007] Optionally, the rotating seat further has a drive hole that passes through the shaft, and a drive shaft is engaged in the drive hole so that the rotating seat can be driven by the drive shaft to rotate.

[0008] Optionally, the bottom wall of the support base has two hollowed-out portions adjacent to the elastic support portions to facilitate the elastic deformation of the elastic support portions.

[0009] Detailed construction, features, assembly, and usage of the ladder rope fastener for Venetian blinds provided by this invention will be described in the following detailed description of embodiments. However, those skilled in the art will understand that these detailed descriptions and the specific embodiments listed for implementing this invention are for illustrative purposes only and are not intended to limit the scope of the claims. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the ladder rope fixing device of the present invention installed on the upper beam;

[0011] Figure 2 This is a perspective view of the ladder rope fixing device of the present invention;

[0012] Figure 3 This is an exploded perspective view of the ladder rope fixing device of the present invention;

[0013] Figure 4 This is an end view of the ladder rope fixer of the present invention;

[0014] Figure 5 Similar Figure 4 The main feature is that the support base undergoes elastic deformation by abutting against the upper beam through these elastic support parts.

[0015] [Explanation of Symbols in the Attached Drawings]

[0016] 10: Ladder rope fastener

[0017] 20: Support base

[0018] 22: Bottom wall

[0019] 24: Standing wall

[0020] 26: Elastic support section

[0021] 28: Pivot slot

[0022] 29: Positioning bumps

[0023] 30: Rotating seat

[0024] 31: Pivot

[0025] 32: Shaft

[0026] 33: Plate

[0027] 34: Positioning groove

[0028] 35: Ladder rope fixing part

[0029] 36: Slot

[0030] 37: Fixing hole

[0031] 38: Drive hole

[0032] 40: Raising the roof beam

[0033] 42: Drive shaft

[0034] 44: Ladder rope

[0035] 46: Leaf blade Detailed Implementation

[0036] The applicant hereby clarifies that throughout this specification, including the embodiments described below and the claims in the patent application, all directional terms are based on the directions shown in the accompanying drawings. Secondly, in the embodiments and drawings described below, the same element reference numerals represent the same or similar elements or their structural features.

[0037] Please see Figure 2 and Figure 3 The ladder rope fixing device 10 of the present invention includes a support base 20 and a rotating base 30.

[0038] The support base 20 has a bottom wall 22 and two opposing vertical walls 24. The bottom wall 22 has an elastic support portion 26 and two openwork portions 27 at each end. The elastic support portions 26 protrude from the bottom surface of the bottom wall 22, and the openwork portions 27 are adjacent to the two opposing sides of the elastic support portions 26 to facilitate elastic deformation of the elastic support portions 26. The vertical walls 24 are integrally connected to the two opposing sides of the bottom wall 22. Each vertical wall 24 has an upward-opening pivot groove 28, and one pivot groove 28 has a positioning protrusion 29 on its groove wall. Figure 1 and Figure 4 As shown, the support base 20 is installed inside the upper beam 12 and abuts against the upper beam 40 with the elastic support parts 26.

[0039] The rotating seat 30 has a pivot 31 and a ladder rope fixing part 35. The pivot 31 has a shaft portion 32 and two disc portions 33. The outer peripheral surface of one end of the shaft portion 32 has a plurality of positioning grooves 34 arranged in an evenly spaced ring. The disc portions 33 are integrally connected to both ends of the shaft portion 32, and the outer diameter of the disc portions 33 is larger than the outer diameter of the shaft portion 32. The ladder rope fixing part 35 is integrally connected to the outer peripheral surface of the shaft portion 32 of the pivot 31, and the top surface of the ladder rope fixing part 35 has two slots 36, one end of each slot 36 communicating with a fixing hole 37. Figure 2 and Figure 3As shown, the rotating seat 30 is mounted on the pivot slots 28 of the support seat 20 at both ends of the shaft portion 32 of the pivot 31, and the disc portions 33 of the pivot 31 are located outside the vertical walls 24 of the support seat 20 to prevent the pivot 31 from disengaging from the pivot slots 28 in the horizontal direction. Furthermore, the rotating seat 30 has a drive hole 38 penetrating the pivot 31, through which a drive shaft 42 passes and engages, allowing the rotating seat 30 to pivot relative to the support seat 20 under the drive of the drive shaft 42. Additionally, when used with two ladder ropes 44, the top ends of the ladder ropes 44 are inserted into the fixing holes 37 through the slots 36 and then secured by knots, so that the rotating seat 30 can synchronously drive the ladder ropes 44 during rotation, and the ladder ropes 44 then tilt all the blades 46.

[0040] As can be seen from the above, when the rotating seat 30 rotates relative to the support seat 20, the positioning grooves 34 will alternately engage with the positioning protrusions 29 of the support seat 20. Specifically, when the rotating seat 30 rotates to a point where the positioning grooves 34 are not engaged with the positioning protrusions 29, such as... Figure 5 As shown, the shaft portion 32 of the pivot 31 abuts against the positioning protrusion 29 of the support seat 20, causing the support seat 20 to elastically deform against the upper beam 12 through the elastic support portions 26. Then, when the rotating seat 30 rotates to the point where one of the positioning grooves 34 engages with the positioning protrusion 29, as... Figure 4 As shown, the support base 20 returns to its original shape through the elastic restoring force of these elastic support parts 26. In this way, the rotating base 30 can produce a clear sense of stop during rotation, thereby improving the user's operating feel when adjusting the blade angle.

Claims

1. A ladder rope fastener for Venetian blinds, comprising: A support base has a bottom wall and two opposing vertical walls. Each end of the bottom wall has an elastic support portion protruding from the bottom surface of the bottom wall. The vertical walls are connected to the two opposing sides of the bottom wall, and each vertical wall has a pivot groove, wherein one of the pivot grooves has a positioning protrusion on its groove wall. A rotating seat has a pivot and a ladder rope fixing part provided on the pivot. The two ends of the pivot are pivotally provided in the pivot grooves of the support seat, and the outer peripheral surface of the pivot has a plurality of positioning grooves arranged in an equally spaced ring. The rotating seat engages with the positioning protrusion of the support seat with one of the positioning grooves. in, These elastic support components extend integrally downward from the bottom wall and elastically abut against the upper beam; The positioning protrusion is integrally protruded outward from the groove wall of the pivot groove; The bottom wall of the support base also has two hollowed-out sections, which are adjacent to the elastic support sections.

2. The ladder rope fastener for Venetian blinds according to claim 1, wherein, The pivot has a shaft portion and two disc portions. The shaft portion is pivotally disposed in the pivot grooves of the support base and has positioning grooves. The disc portions are connected to both ends of the shaft portion and are located on the outside of the vertical walls of the support base. The outer diameter of the disc portions is larger than the outer diameter of the shaft portion and the groove diameter of the pivot groove.

3. The ladder rope fastener for Venetian blinds according to claim 2, wherein, The rotating seat also has a drive hole that passes through the shaft.

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