CN114763729A

CN114763729A - Adjustable lower buckle for non-exposed pull rope type curtain

Info

Publication number: CN114763729A
Application number: CN202110039152.2A
Authority: CN
Inventors: 陈柏宇
Original assignee: Sheen World Technology Corp
Current assignee: Sheen World Technology Corp
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-07-19

Abstract

The invention relates to an adjustable lower buckle matched with a non-exposed pull rope type curtain, which comprises a base, a first worm and a second worm. The base is arranged in the lower beam and provided with a first through hole through which the lifting rope penetrates, the first worm penetrates through the base and is provided with a driving and rotating hole exposed out of the bottom surface of the lower beam, the first worm can be driven by clamping the base in the driving and rotating hole through a hand tool, and the second worm penetrates through the base and is meshed with the first worm and fixed with the bottom end of the lifting rope. Borrow this, when first worm rotated, the second worm can be driven by first worm and rotate to rotate the bottom of in-process and roll-up to the lifting rope, because the top of lifting rope keeps fixed, so the underbeam can up lifting when the bottom of lifting rope is rolled up, so can the terrain clearance of quick adjustment underbeam.

Description

Adjustable lower buckle for non-exposed pull rope type curtain

Technical Field

The invention relates to a pull rope type curtain without exposed part, in particular to an adjustable lower buckle capable of adjusting the height of a lower beam above the ground.

Background

The common exposed pull-rope-free curtain on the market at present mainly utilizes the torsion of a metal spring and the counterweight of a lower beam to achieve balance, so that the curtain can be unfolded and folded, and the potential safety hazard of the traditional pull-rope curtain is improved.

For a stay-cord-less window covering, the height position of the window is important. If the window is in a too low position, the curtain will easily hit the lower beam against the ground after deployment. In order to solve the above problems, users usually try to adjust the extended length of the curtain, but the curtain is easily folded automatically due to the lack of strength during adjustment, and the positioning is often completed by repeated operations, which is not perfect in use.

Disclosure of Invention

The invention mainly aims to provide an adjustable lower buckle for a non-exposed pull rope type curtain, which can adapt to different use environments to adjust the ground clearance of a lower beam so as to increase the convenience in use.

To achieve the above-mentioned objective, the adjustable lower buckle of the present invention comprises a base, a first worm and a second worm. The base is arranged in the lower beam and is provided with a first through hole penetrated by the lifting rope; the first worm is rotatably arranged on the base in a penetrating mode and provided with a head part, a first rod part and a first worm tooth part, the head part protrudes out of the bottom surface of the lower beam and is provided with a driving hole, the first worm can be driven to rotate by being clamped in the driving hole through a hand tool (such as a screwdriver), the bottom end of the first rod part is connected with the head part, and the first worm tooth part is arranged on the peripheral surface of the first rod part; this base is worn to locate with rotatable mode by this second worm, and the axial of this first worm of axial vertical of this second worm, and this second worm has a second pole portion and a second worm-tooth portion, and this second pole portion is with the bottom reciprocal anchorage of this lifting rope, and the first worm-tooth portion of this first worm of engagement is located the outer peripheral face of this second pole portion to this second worm-tooth portion.

Therefore, when the first worm is driven by the hand tool to rotate, the second worm is driven by the first worm to rotate, the bottom end of the lifting rope is wound in the rotating process, and the top end of the lifting rope is fixed on a rope winder and is kept still, so that the lower beam can be lifted upwards when the bottom end of the lifting rope is wound, and the ground clearance of the lower beam can be adjusted quickly and conveniently.

Preferably, the second worm further has a protruding ring portion, and the protruding ring portion is disposed on the outer peripheral surface of the second rod portion and fixed to the bottom end of the lifting rope.

Preferably, the second worm further has a second through hole radially penetrating through the protruding ring portion and the second rod portion, and the bottom end of the lifting rope is inserted into the second through hole and fixed in a knotting manner.

Preferably, a flange protrudes from the wall of the fixing hole, and the bottom end of the lifting rope forms a knot in a knotting manner, so that the lifting rope and the second worm are fixed together by mutually clamping the knot and the flange.

Preferably, the base has a slot with an opening facing downward and communicating with the first through hole, and the convex ring portion of the second worm is located in the slot.

Preferably, the driving hole is cross-shaped for engaging with a hand tool such as a cross driver.

The detailed structure, features, assembly or use of the adjustable lower buckle for the non-exposed pull-cord type window covering provided by the present invention will be described in the following detailed description of the embodiments. However, those skilled in the art should understand that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Drawings

FIG. 1 is a top perspective view of the adjustable lower clasp of the present invention.

FIG. 2 is a bottom perspective view of the adjustable underbuckle of the present invention.

Fig. 3 is an exploded perspective view of the adjustable lower buckle of the present invention.

FIG. 4 is a perspective view of the adjustable lower buckle of the present invention mounted to a lower beam.

FIG. 5A is a perspective view of the adjustable shackle of the present invention in use with a lift cord, with the base shown in partial cross-section.

FIG. 5B is identical to FIG. 5A and shows primarily the state where the bottom end of the lift cord is retracted by the second worm.

FIG. 6A is a cross-sectional view of the adjustable bottom clip of the present invention in use with a bottom rail, showing the knot and flange engaged with each other.

FIG. 6B is identical to FIG. 6A and primarily shows the lift cord retracted by the second worm.

[ description of reference ]

10-adjustable lower buckle

20-base

21-half shell

22-arc groove

23-first perforation

24-groove

25-grooving

26-first support part

27-second support part

30-first worm

31-head part

32-first rod part

33-first worm gear

34-driving hole

40-second worm

41-second rod part

42-second worm gear part

43-convex ring part

44-second perforation

45-flange

50-lower beam

52-top hole

54-Lift cord

56-knot

58-blade

P-imaginary plane

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.

Applicants first describe herein, throughout the specification and claims that follow, the directional terms used in the description and claims are used as reference to directions in the drawings. Next, in the embodiments and drawings to be described below, the same reference numerals are used to designate the same or similar components or structural features thereof.

Referring to fig. 1 to 3, the adjustable lower buckle 10 of the present invention includes a base 20, a first worm shaft 30, and a second worm shaft 40.

The base 20 is formed by two half shells 21 which are butted together. The top surface of each half shell 21 has an arc groove 22, and the two arc grooves 22 form a first through hole 23 (shown in fig. 1) after being butted; each half-shell 21 has a recess 24 below the arc slot 22, and the two recesses 24 form, after being butted together, a slot 25 (shown in fig. 2) opening downwards and communicating with the first through hole 23. Each half shell 21 has two vertically opposed first support portions 26 and two longitudinally opposed second support portions 27.

The first worm 30 has a head 31, a first rod 32 and a first worm-tooth part 33, the head 31 has a driving hole 34 in a cross shape, the bottom end of the first rod 32 is connected to the head 31, and the first worm-tooth part 33 is disposed on the outer peripheral surface of the first rod 32. As shown in fig. 3, the first worm 30 is disposed through the base 20 from bottom to top, wherein the head 31 protrudes from the bottom surface of the base 20, and the top and bottom ends of the first rod 32 are supported by the first supporting portion 26 of the base 20.

The second worm 40 has a second rod portion 41, a second worm tooth portion 42, and a collar portion 43. The second worm gear portion 42 is provided on the outer peripheral surface of the second rod portion 41, and the protruding ring portion 43 is coaxially provided on the outer peripheral surface of the second rod portion 41 and spaced apart from the second worm gear portion 42. As shown in fig. 3, the second worm 40 is horizontally disposed in the base 20 and engages with the first worm tooth portion 33 of the first worm 30 via the second worm tooth portion 42, wherein the left and right ends of the second rod portion 41 are supported by the second supporting portion 27 of the base 20, and the collar portion 43 is disposed in the slot 25 of the base 20. In addition, the second worm 40 has a second through hole 44 radially penetrating the collar portion 43 and the second rod portion 41, and the second through hole 44 protrudes from the center of the hole wall thereof with a flange 45 (as shown in fig. 6A and 6B).

When used in conjunction with a window covering without exposed cords, as shown in fig. 4 (only a portion of the window covering without exposed cords is shown in fig. 4 for convenience of illustration and description), the base 20 is inserted into the lower beam 50 from the bottom surface of the lower beam 50, and the driving hole 34 of the first worm gear 30 is exposed to be engaged with a hand tool such as a cross screwdriver. As shown in fig. 5A and 6A, the bottom end of the lift cord 54 is inserted into the second through hole 44 of the second worm 40 through the top hole 52 of the lower beam 50 and the first through hole 23 of the base 20, and then a knot 56 is formed by knotting, and the lift cord 54 and the second worm 40 are fixed together by the mutual engagement of the knot 56 and the flange 45.

When the driving hole 34 of the first worm 30 is driven by the hand tool to rotate, the first worm 30 drives the second worm 40 to rotate together, the bottom end of the lifting rope 54 is wound up by the convex ring portion 43 during the rotation of the second worm 40, and since the top end of the lifting rope 54 is fixed to a rope winder (not shown in the figures, the matching between the lifting rope 54 and the rope winder is the traditional technology and is not the focus of the present invention, and is not described herein) and remains still, the bottom end of the lifting rope 54 drives the lower beam 50 to lift up by the lower buckle 10 installed in the lower beam 50 when wound up, for example, the lower beam 50 is lifted up from the position shown in fig. 6A to the position shown in fig. 6B (the imaginary plane P shown in fig. 6A and 6B is only a relative position of the lower beam 50 before and after lifting, and is not the height of the actual ground), the lower beam 50 simultaneously collects part of the blades 58 during the lifting-up process, the positioning of the lower beam 50 can be completed by stopping the rotation of the first worm shaft 30 until the lower beam 50 is adjusted to an appropriate height from the ground. The lower beam 50 is then maintained in the height adjusted position for the next deployment without the need for readjustment, even if all of the leaves 58 are collapsed. If all the blades 58 are to be completely unfolded again, the first worm 30 is reversely rotated by the hand tool, so that the second worm 40 releases the reeled lifting rope 54, and the lower beam 50 can be restored to the original position after the complete release. As can be seen from the above, the adjustable lower buckle 10 of the present invention can allow a user to adapt to different environments to quickly adjust the height of the lower beam 50 from the ground, so as to increase the convenience of use.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lower knot with adjustable be used for having exposed stay cord formula (window) curtain, this have not exposed stay cord formula (window) curtain include a underbeam and a lifting rope, and this lifting rope's bottom is worn to locate in this underbeam, and its characterized in that, this lower knot with adjustable contains:

the base is arranged in the lower beam and is provided with a first through hole penetrated by the lifting rope;

the first worm is rotatably arranged on the base in a penetrating mode and provided with a head part, a first rod part and a first worm tooth part, the head part protrudes out of the bottom surface of the lower beam and is provided with a driving hole, the bottom end of the first rod part is connected with the head part, and the first worm tooth part is arranged on the outer peripheral surface of the first rod part; and

the second worm is rotatably arranged on the base in a penetrating mode, the axial direction of the second worm is perpendicular to the axial direction of the first worm, the second worm is provided with a second rod portion and a second worm tooth portion, the second rod portion and the bottom end of the lifting rope are fixed together, and the second worm tooth portion is arranged on the outer peripheral surface of the second rod portion and meshed with the first worm tooth portion of the first worm.

2. The adjustable lower buckle of claim 1, wherein the second worm further comprises a protruding ring portion, the protruding ring portion is disposed on the outer circumferential surface of the second rod portion and fixed to the bottom end of the lifting cord.

3. The adjustable lower buckle of claim 2, wherein the second worm further has a second through hole radially penetrating the protruding ring portion and the second rod portion, and the bottom end of the lifting cord is inserted into the second through hole and fixed therein by knotting.

4. The adjustable lower clasp of claim 3, wherein the wall of the second through hole protrudes with a flange, and the bottom end of the lift cord is knotted to form a knot, and the knot and the flange are engaged with each other.

5. The adjustable lower buckle for a window curtain as claimed in any one of claims 2 to 4, wherein the base has a slot with an opening facing downward and communicating with the first through hole, and the convex ring portion of the second worm is located in the slot.

6. The adjustable lower buckle for a window covering without exposed pull rope of claim 1, wherein the driving hole is cross-shaped.