TWI742982B - Adjustable bottom buckle for non-exposed drawstring curtains - Google Patents

Abstract

The adjustable bottom buckle of the present invention is used with a non-exposed drawstring curtain, and it includes a base, a first worm and a second worm. The base is set in the lower beam and has a first through hole penetrated by the lifting rope. The first worm is penetrated through the base and has a driving hole exposed on the bottom surface of the lower beam. The hole can drive the first worm, and the second worm passes through the base and engages with the first worm, and is fixed to the bottom end of the lifting rope. Thereby, when the first worm rotates, the second worm will be driven by the first worm to rotate, and during the rotation, the bottom end of the lifting rope is wound. Since the top of the lifting rope remains fixed, the lower beam is The bottom end of the lifting rope will be lifted up when it is retracted, so that the ground height of the lower beam can be quickly adjusted.

Description

Adjustable bottom buckle for non-exposed drawstring curtains

The invention relates to a non-exposed drawstring curtain, in particular to an adjustable lower buckle that can adjust the height of the lower beam from the ground.

At present, the common non-exposed drawstring curtains on the market mainly use the torsion of the metal spring and the counterweight of the lower beam to achieve a balance, so that the curtains can be expanded and folded, so as to improve the safety concerns of traditional drawstring curtains.

For non-exposed drawstring curtains, the height of the window is very important. If the position of the window is too low, it is easy for the lower beam to touch the ground after the curtain is unfolded. In order to solve the above problems, users usually try to adjust the unfolded length of the curtain, but it is easy for the curtain to automatically collapse due to the unsqueezed strength during adjustment. It often requires several repeated operations to successfully complete the positioning, so it is still in use. There are deficiencies.

The main purpose of the present invention is to provide an adjustable lower buckle for non-exposed drawstring curtains, which can adjust the height of the lower beam from the ground according to different use environments, so as to increase the convenience of use.

In order to achieve the above main objective, the adjustable bottom buckle of the present invention includes a base, a first worm and a second worm. The base is set in the lower beam and has a first through hole penetrated by the lifting rope; the first worm is rotatably penetrated through the base, and the first worm has a head, a first A rod portion and a first worm tooth portion. The head protrudes from the bottom surface of the lower beam and has a driving hole. The driving hole can be driven by a hand tool (such as a screwdriver). The first worm rotates, the bottom end of the first rod part is connected to the head, the first worm gear part is provided on the outer peripheral surface of the first rod part; the second worm is rotatably penetrated on the base , The axial direction of the second worm is perpendicular to the axial direction of the first worm, and the second worm has a second rod part and a second worm tooth part, the second rod part and the bottom end of the lifting rope are fixed to each other The second worm gear part is arranged on the outer peripheral surface of the second rod part and engages with the first worm gear part of the first worm.

It can be seen from the above that when the first worm is driven by the aforementioned hand tool to rotate, the second worm will be driven to rotate by the first worm, and the bottom end of the lifting rope will be wound during the rotation. Since the top end of the lifting rope is fixed to a rope reel and remains immobile, the lower beam will lift up when the bottom end of the lifting rope is retracted, so that the ground clearance of the lower beam can be adjusted quickly and conveniently high.

Preferably, the second worm further has a convex ring portion, which is provided on the outer peripheral surface of the second rod portion and fixed with the bottom end of the lifting rope.

Preferably, the second worm further has a second perforation radially penetrating the convex ring portion and the second rod portion, and the bottom end of the lifting rope penetrates through the second perforation and is fixed in a knotted manner .

Preferably, the hole wall of the fixing hole protrudes from a flange, the bottom end of the lifting rope is knotted to form a knot, and the knot and the flange are mutually locked to make the lifting rope Fixed with the second worm.

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, so as to be embedded with a hand tool such as a cross screwdriver.

The detailed structure, characteristics, assembly or use of the adjustable bottom buckle for non-exposed drawstring curtains provided by the present invention will be described in the detailed description of the following implementations. However, those with ordinary knowledge in the field of the present invention should be able to understand that the detailed description and the specific embodiments listed for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

The applicant first explains here that throughout the specification, including the following embodiments and claims in the scope of the patent application, the nouns related to directionality are based on the directions in the drawings. Secondly, in the following embodiments and drawings, the same element numbers represent the same or similar elements or their structural features.

Please refer to FIGS. 1 to 3, the adjustable bottom buckle 10 of the present invention includes a base 20, a first worm 30, and a second worm 40.

The base 20 is formed by butting two half-shells 21. The top surface of each half-shell 21 has an arc groove 22, and the two arc grooves 22 form a first perforation 23 (as shown in FIG. 1) after butting; each half-shell 21 has an arc groove 22 below A groove 24 and two grooves 24 form a slot 25 with an opening facing downwards and communicating with the first through hole 23 after being butted (as shown in FIG. 2). In addition, each half-shell 21 has two first support portions 26 opposite to each other up and down and two second support portions 27 opposite to each other back and forth.

The first worm 30 has a head 31, a first rod 32 and a first worm gear 33. The head 31 has a cross-shaped drive hole 34. The bottom end of the first rod 32 is connected to the head 31. The first worm gear portion 33 is provided on the outer peripheral surface of the first rod portion 32. As shown in Figure 3, the first worm 30 penetrates the base 20 from bottom to top. 20 are supported by the first supporting portions 26.

The second worm 40 has a second rod portion 41, a second worm gear portion 42 and a convex ring portion 43. The second worm gear portion 42 is provided on the outer peripheral surface of the second rod portion 41, and the convex ring portion 43 is coaxially provided on the outer peripheral surface of the second rod portion 41 and is spaced apart from the second worm gear portion 42. As shown in Figure 3, the second worm 40 penetrates the base 20 in a horizontal manner and engages the first worm gear 33 of the first worm 30 with the second worm gear 42. The left and right ends are supported by the second supporting portions 27 of the base 20, and the convex ring portion 43 is located in the slot 25 of the base 20. In addition, the second worm 40 further has a second through hole 44 radially penetrating the convex ring portion 43 and the second rod portion 41. The second through hole 44 protrudes from the center of the hole wall with a flange 45 (as shown in FIG. 6A and Shown in Figure 6B).

When used in conjunction with a non-exposed drawstring curtain, as shown in Figure 4 (for ease of display and explanation, only a part of the non-exposed drawstring curtain is shown in Figure 4), the base 20 is embedded from the bottom surface of the lower beam 50 In the lower beam 50, and the driving hole 34 of the first worm 30 is exposed, so as to be interlocked with a hand tool such as a cross screwdriver. As shown in FIGS. 5A and 6A, the bottom end of the lifting rope 54 passes through the top hole 52 of the lower beam 50 and the first hole 23 of the base 20 into the second hole 44 of the second worm 40, and then is knotted. A knot 56 is formed, and the lifting rope 54 and the second worm 40 are fixed together by the mutual locking of the knot 56 and the flange 45.

When the driving hole 34 of the first worm 30 is driven by the aforementioned hand tool to rotate, the first worm 30 will drive the second worm 40 to rotate together. During the rotation of the second worm 40, the raised ring 43 is used to lift the The bottom end of the rope 54 is retracted, because the top end of the lifting rope 54 is fixed to the rope reel (not shown in the figure, because the combination of the lifting rope 54 and the rope reel is a conventional technology and is not the focus of this case. Do not repeat) and keep it still, so when the bottom end of the lifting rope 54 is retracted, the lower beam 50 will be lifted up by the lower buckle 10 installed in the lower beam 50, for example, from the position shown in FIG. 6A to the position shown in FIG. The position shown in 6B (the imaginary plane P shown in FIGS. 6A and 6B only illustrates the relative position of the lower beam 50 before and after ascending, not the height of the actual ground), the lower beam 50 will be retracted at the same time during the ascending process When a part of the blade 58 is integrated, until the lower beam 50 is adjusted to an appropriate height from the ground, the positioning of the lower beam 50 can be completed by stopping the rotation of the first worm 30. After that, even if all the blades 58 are folded together, the lower beam 50 can still be maintained at the height-adjusted position during the next deployment, and there is no need to readjust it. If you want to fully expand all the blades 58 again in the future, use the aforementioned hand tool to reverse the first worm 30 so that the second worm 40 releases the retracted lifting rope 54 until the lower beam 50 is fully released. Restore the original position. It can be seen from the above that the adjustable bottom buckle 10 of the present invention allows the user to quickly adjust the height of the lower beam 50 from the ground according to different environments, so as to increase the convenience of use.

10: Adjustable bottom buckle 20: Pedestal 21: Half shell 22: arc slot 23: first piercing 24: Groove 25: Slotting 26: The first support part 27: The second support part 30: The first worm 31: head 32: The first pole 33: The first worm gear 34: drive hole 40: second worm 41: second pole 42: second worm gear 43: convex ring 44: second perforation 45: flange 50: Lower beam 52: top hole 54: Lifting rope 56: Knot 58: blade P: imaginary plane

Figure 1 is a top perspective view of the adjustable bottom buckle of the present invention. Figure 2 is a bottom perspective view of the adjustable bottom buckle of the present invention. Figure 3 is an exploded perspective view of the adjustable bottom buckle of the present invention. Figure 4 is a perspective view of the adjustable bottom buckle of the present invention installed on the lower beam. Fig. 5A is a perspective view of the adjustable lower buckle used in conjunction with the lifting rope of the present invention, wherein the base is presented in a partial section. Fig. 5B is similar to Fig. 5A, and mainly shows the state where the bottom end of the lifting rope is retracted by the second worm. Fig. 6A is a cross-sectional view of the adjustable lower buckle used in conjunction with the lower beam of the present invention, which mainly shows that the knot and the flange are mutually locked. Fig. 6B is similar to Fig. 6A and mainly shows the state of the lifting rope being retracted by the second worm.

21: Half shell

22: arc slot

24: Groove

26: The first support part

27: The second support part

30: The first worm

31: head

32: The first pole

33: The first worm gear

40: second worm

41: second pole

42: second worm gear

43: convex ring

44: second perforation

Claims (6)

An adjustable lower buckle for non-exposed drawstring curtains. The non-exposed drawstring curtain includes a lower beam and a lifting rope. The bottom end of the lifting rope is inserted into the lower beam. The adjustable lower buckle Contains: A base, which is set in the lower beam and has a first perforation penetrated by the lifting rope; A first worm rotatably penetrates the base. The first worm has a head, a first shaft, and a first worm gear. The head protrudes from the bottom surface of the lower beam and has A driving hole, the bottom end of the first rod part is connected to the head, and the first worm gear part is provided on the outer peripheral surface of the first rod part; and A second worm rotatably penetrates the base, the axial direction of the second worm is perpendicular to the axial direction of the first worm, the second worm has a second rod portion and a second worm tooth portion, the The second rod part and the bottom end of the lifting rope are fixed together, and the second worm gear part is arranged on the outer peripheral surface of the second rod part and engages with the first worm gear part of the first worm. The adjustable bottom buckle for non-exposed drawstring curtains according to claim 1, wherein the second worm further has a convex ring portion, the convex ring portion is provided on the outer peripheral surface of the second rod portion and is in contact with The bottom ends of the lifting rope are fixed to each other. The adjustable lower buckle for non-exposed drawstring curtains according to claim 2, wherein the second worm further has a second through hole radially penetrating the convex ring portion and the second rod portion, and the lifting The bottom end of the rope is pierced and fixed in the second perforation in a knotted manner. The adjustable bottom buckle for non-exposed drawstring curtains according to claim 3, wherein the hole wall of the second perforation protrudes from a flange, and the bottom end of the lifting rope is knotted to form a rope The knot and the flange are mutually locked. The adjustable bottom buckle for non-exposed drawstring curtains according to any one of claims 2 to 4, wherein the base has a slot with an opening facing downward and communicating with the first perforation, and the second The convex ring part of the worm is located in the slot. The adjustable bottom buckle for non-exposed drawstring curtains as described in claim 1, wherein the driving hole is cross-shaped.

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