Rope hiding type lower beam of venetian blind

Abstract

The rope hiding type blind lower beam comprises a lower beam body, and the lower beam is divided into an upper positioning base plate and a lower half wrapping groove cover; the lower wall of the base plate is a straight and flat rib groove, and the inner width of the rib groove corresponds to the outer size of the rope plug; the base plate is provided with at least two groups of ladder rope notches and pull rope round holes, the notches are formed in two sides of the base plate, the insertion tongues penetrate into the base plate, and round holes are formed in the middle of the base plate of the same group of notches; the groove cover comprises a bottom plate and vertical walls on the two sides, the vertical walls are higher than the rib grooves, clamping and inserting grooves of the lower beam plug are formed in the vertical walls, and inserting grooves of the inserting tongues are formed in the inner walls of the vertical walls on the clamping and inserting grooves. The inserting tongues on the two sides of the base plate are inserted into the inserting grooves of the lower half wrapping groove cover from the side edge, the groove cover wraps the ladder rope tail and the pull rope tail and hides the ladder rope tail and the pull rope tail, attractiveness is achieved, and the ladder rope is not abraded and durable.

Description

Technical Field

[0001] This utility model relates to Venetian blinds, and more particularly to the lower beam of Venetian blinds. Background Technology

[0002] A Venetian blind consists of a lower beam, pull cords, ladder cords, venetian blinds, an upper beam, a drive rod, a cord winder, and a control head. The pull cord lifts the lower beam, which in turn lifts the venetian blinds on the ladder cords to retract the blinds. Existing lower beams are integrally extruded, hollow strips. At least two pull cord holes are drilled at intervals on the lower beam. The lower beam passes horizontally through the end of the ladder cord, and the pull cord passes vertically through the holes on the lower beam. The end of the pull cord is knotted and inserted into the cavity inside the hole. The ladder cord is also tightened and inserted into the cavity inside the hole. This results in the ladder cord protruding outside the lower beam, which is unsightly, prone to wear and tear, and not durable. Furthermore, the knotted pull cords make it inconvenient to fine-tune the balance of the venetian blinds. Summary of the Invention

[0003] This utility model discloses a concealed rope type lower beam for venetian blinds, solving the technical problems of unsightly exposed ladder ropes on the lower beam and the inconvenience of knotted ropes in fine-tuning the balance of the two sides of the venetian blinds. The technical solution is as follows:

[0004] The lower beam of the rope-type Venetian blind includes the lower beam body, which is divided into an upper positioning base plate and a lower half-covering groove cover. The base plate is folded down on both sides and then extends out into tongues. The lower wall of the base plate is a straight and flat rib groove, and the inner width of the rib groove corresponds to the outer dimension of the rope plug. The base plate has at least two sets of ladder rope notches and pull rope round holes. The notches are opened on both sides of the base plate, and the tongues extend into the base plate. The base plate with the same set of notches has a round hole in the middle. The groove cover includes a base plate and two vertical walls on both sides. The vertical walls are higher than the rib grooves. The vertical walls are provided with slots for the lower beam plugs. The inner wall of the vertical wall above the slots is provided with slots for the tongues.

[0005] The lower beam of the venetian blind with concealed rope has slots for the lower beam plug on the inner walls of the vertical walls on both sides of the lower half of the cover.

[0006] The lower beam of the cordless Venetian blind has two vertical walls on either side of the lower half-covered groove cover. One vertical wall has a slot for the lower beam plug on its inner wall, and the other vertical wall has a slot for the lower beam plug on its outer wall. The slot on the outer wall is used to insert brush strips or rubber strips to cushion and reduce the noise caused by the lower beam hitting the wall.

[0007] The lower beam of the concealed rope venetian blind features a concealed rope plug whose dimensions correspond to the dimensions of the rib groove. Side wings supporting the rib groove are located on both the front and back sides, and grooves for the concealed rope pass through these wings. A cavity for accommodating the rope clip is formed from the bottom of the plug upwards. A circular hole for the pull rope is opened on the upper wall of the plug. The rope clip is a cylindrical ring with symmetrically arranged locking slots. A gap is left between the rope clip and the cavity wall of the plug to compress the pull rope. The pull rope only needs to be wrapped around the locking slots of the rope clip once or twice and inserted into the cavity of the plug to tighten; no knots are required, allowing for easy and precise fine-tuning of the pull rope length.

[0008] The beneficial effects are that, compared with the existing exposed ladder rope integrated venetian blind bottom beam, the pull rope only needs to be wrapped around the rope clip opening once or twice and inserted into the rope plug cavity to tighten it, without knotting, and the length of the pull rope can be easily fine-tuned; the ladder rope is placed in the recesses on both sides of the base plate and stored in the bottom groove of the rope plug, and the tongues on both sides of the base plate are inserted into the slots of the lower half of the groove cover from the side, and the groove cover covers the end of the ladder rope and the end of the pull rope, hiding the end of the ladder rope and the end of the pull rope, which is beautiful, does not wear and tear, and makes the ladder rope durable. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the exploded structure of the lower beam from top to bottom;

[0010] Figure 2 This is a schematic diagram of the exploded structure of the lower beam from bottom to top;

[0011] Figure 3 This is a schematic diagram of the rope plug's position structure;

[0012] Figure 4 This is a schematic diagram of the explosive structure of the rope plug and rope clamp from bottom to top;

[0013] Figure 5 This is a schematic diagram of the explosive structure of the rope plug and rope clamp from top to bottom;

[0014] Figure 6 This is a structural schematic diagram of the lower beam viewed from the left and right sides. Specific Implementation

[0015] The present invention will be described in conjunction with the accompanying drawings, starting with the description of the markings.

[0016] Substrate 1, tongue 11, notch 12, round hole 13, rib 14, rib groove 15;

[0017] 2. Slot cover, 21. Base plate, 22. Vertical wall, 23. Card slot, 24.

[0018] Rope plug 3, cavity 31, round hole 32, side wing 33, groove 34;

[0019] Rope clip 4, ring 41, latch 42;

[0020] Gap 5.

[0021] like Figure 1 , Figure 2 , Figure 6As shown, the lower beam of the cordless venetian blind includes a separate upper positioning base plate 1 and a lower half-covering cover 2. The base plate 1 is folded down on both sides and then extends out with tongues 11. Two straight, flat ribs 14 are symmetrically positioned at the center of the lower wall of the base plate 1 to form a rib groove 15. The inner width of the rib groove 15 corresponds to the outer dimension of the cord plug 3. The cover 2 includes a base plate 21 and two vertical walls 22. The vertical walls 22 are higher than the rib grooves 15. The vertical walls 22 are provided with slots 23 for the lower beam plug. The inner wall of the vertical wall on the slot 23 is provided with slots 24 for the tongues 11. If the weatherstripping or rubber strip is not installed, the slots 23 for the lower beam plug are provided on the inner wall of the vertical wall 22. The preferred outer wall slot 23 of the utility model is used to insert brush strips or rubber strips to buffer and reduce the noise caused by the lower beam hitting the wall. A slot 23 for the lower beam plug is provided on the inner wall of one vertical wall 22, and a slot 23 for the lower beam plug is provided on the outer wall of the other vertical wall. The aluminum alloy is extruded into a long strip and then cut into individual strips. The base plate 1 has at least two sets of ladder rope recesses 12 and pull rope holes 13. The recesses 12 are opened on both sides of the base plate 1, with the inserts 11 extending into the base plate 1. A hole 13 is opened in the middle of the base plate 1 with the same set of recesses 12. The recesses 12 and the holes 13 correspond to the rope winder of the upper beam and serve a positioning function. Figure 5 As shown, a gap 5 is reserved between the bottom of the rope plug 3 and the bottom plate 21 of the lower half-cover 2 to compress the ladder rope.

[0022] like Figure 3 , Figure 4 , Figure 5 As shown, the rope plug 3 includes a cavity 31, a circular hole 32, side wings 33, and a groove 34. The dimensions of the rope plug 3 correspond to the dimensions of the rib groove 15. Side wings 33 are provided on the bottom of the front and rear sides to support the rib groove 15, and grooves 34 are provided on the bottom to hold the rope through the side wings 33. A cylindrical cavity 31 is provided from the bottom of the rope plug upward to accommodate the rope clip 4. A circular hole 32 for pulling the rope is opened on the upper wall of the rope plug 3, and the circular hole 32 is larger than the circular hole 13 on the base plate 1. The rope clip 4 is a cylindrical ring 41 with symmetrically arranged slots 42. A gap is reserved between the rope clip 4 and the cavity wall of the rope plug 3 to compress the pulling rope. The pulling rope only needs to be wrapped around the slots 42 of the rope clip one or two times and inserted into the cavity 31 of the rope plug to compress it. No knots are required, and the length of the pulling rope can be easily and precisely adjusted. The rope plug 3 is located below the circular hole 13 of the base plate 1. The rope plug 3 can also have other shapes, as long as it can wrap the end of the rope without tying it.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6As shown in the diagram, the installation overview is as follows: the pull rope tail passes through the round hole 13 of the upper positioning base plate 1, and then through the round hole 32 of the rope plug 3. The pull rope tail is finely adjusted to adjust its length and wrapped around the rope clamp 42 once or twice before being inserted into the rope plug cavity 31 and tightened. No knotting is required. The base plate 1 is inserted horizontally into the ladder rope tail, and the ropes on both sides of the ladder rope tail are placed in the recesses 12 on both sides of the base plate 1. The ladder rope tail is stored in the bottom groove 34 of the rope plug 3. The tongues 11 on both sides of the base plate 1 are inserted into the slots 24 of the lower half-covering groove cover 2 from the side. The groove cover 2 covers the ladder rope tail and the pull rope tail, hiding the ladder rope tail and the pull rope tail, which is aesthetically pleasing, prevents wear and tear, and makes the ladder rope durable. The wool strip or rubber strip is inserted into the outer card slot 23, and finally the lower beam plug is inserted into the card slot.

Claims

1. The lower beam of a cordless Venetian blind, including the lower beam body, is characterized by: The lower beam is divided into an upper positioning base plate and a lower half-covering groove cover; the base plate is folded down on both sides and then extends out into tongues; the lower wall of the base plate is a straight and flat rib groove, the inner width of the rib groove corresponds to the outer dimension of the rope plug; the base plate has at least two sets of ladder rope notches and pull rope round holes, the notches are opened on both sides of the base plate and the tongues extend into the base plate, and the base plate with the same set of notches has a round hole in the middle; the groove cover includes a base plate and two vertical walls on both sides, the vertical walls are higher than the rib grooves, the vertical walls are provided with a card slot for the lower beam plug, and the inner wall of the vertical wall above the card slot is provided with a slot for the tongue.

2. The lower beam of the concealed rope type venetian blind according to claim 1, characterized in that: The inner walls of the vertical walls on both sides of the lower half of the cover are provided with slots for the lower beam plug.

3. The lower beam of the venetian blind with concealed rope as described in claim 1, characterized in that: The lower half of the cover has two vertical walls, one inner wall of which is provided with a slot for the lower beam plug, and the other outer wall of which is provided with a slot for the lower beam plug.

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