CN114718438A

CN114718438A - Blade angle adjusting device for curtain

Info

Publication number: CN114718438A
Application number: CN202110010135.6A
Authority: CN
Inventors: 陈柏宇
Original assignee: Sheen World Technology Corp
Current assignee: Sheen World Technology Corp
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2022-07-08

Abstract

The blade angle adjusting device comprises a shell, a transmission assembly and a driving rod. The inside of shell has a flange, and transmission assembly has a first worm and a second worm, and first worm rotationally locates in the shell and mutual meshing, and the outer peripheral face of actuating lever has an elasticity fin, and the actuating lever is worn to locate in the shell from a bottom hole of shell when the equipment, can be extruded by the flange and warp when the elasticity fin passes through the flange of shell, in case can restore to the original state by oneself after passing through the flange, makes elasticity fin and the mutual block of flange accomplish the equipment promptly. Therefore, the blade angle adjusting device does not need to repeatedly adjust the assembly angle of the driving rod, and can reduce the assembly time for consumers so as to improve the convenience in assembly.

Description

Blade angle adjusting device for curtain

Technical Field

The invention relates to a curtain, in particular to a blade angle adjusting device for the curtain.

Background

The separation type blade angle adjusting mechanism disclosed in the patent with the application number of CN201710507309.3 enables a consumer to fix the second driving rod to the first driving rod in a self-assembling manner after purchasing a related curtain product, so that the second driving rod does not protrude out of the upper beam during the packaging and transporting processes, thereby not only preventing the second driving rod from being broken due to improper external force, but also preventing the blade from being damaged or deformed due to the extrusion of the second driving rod.

In the above-mentioned patent document, since the first rotation driving rod is hidden in the housing, the position of the two positioning holes cannot be seen from the appearance, so that the consumer often needs to adjust the assembly angle of the second rotation driving rod many times to smoothly connect the two positioning protrusions of the second rotation driving rod with the two positioning holes of the first rotation driving rod, which is quite troublesome and inconvenient in assembly.

Disclosure of Invention

The present invention has been made in an effort to provide a vane angle adjusting apparatus for a window curtain, which can improve convenience in assembly.

In order to achieve the above-mentioned objectives, the present invention provides a vane angle adjusting device, which comprises a housing, a transmission assembly and a driving rod. The two opposite side surfaces of the top end of the shell are respectively provided with a through hole, the bottom end of the shell is provided with a bottom hole, a wing piece accommodating groove and a flange, the wing piece accommodating groove is positioned above the bottom hole and communicated with the bottom hole, and the flange is positioned between the bottom hole and the wing piece accommodating groove; the transmission assembly is provided with a first worm and a second worm, the first worm is provided with a first rod part, a first worm tooth part and a transmission hole, the first worm tooth part is annularly arranged on the peripheral surface of the first rod part and located between two end parts of the first rod part, the transmission hole is non-circular and axially penetrates through the first rod part, the first worm is rotatably arranged in the shell and penetrates through the equal penetrating hole of the shell by the equal end part of the first rod part, the second worm is provided with a second rod part, a second worm tooth part and a first assembling part, the second worm tooth part is annularly arranged on the peripheral surface of the second rod part, the first assembling part is connected to the bottom end of the second rod part, and the second worm is rotatably arranged in the shell and is engaged with the first worm tooth part of the first worm by the second worm tooth part; the driving rod is provided with a second assembling part, an elastic wing and a third rod part, the top end of the elastic wing is connected to the peripheral surface of the second assembling part, the top end of the third rod part is connected to the bottom end of the second assembling part, therefore, the driving rod enables the second assembling part to penetrate through the shell from the bottom hole of the shell during assembly, the elastic wing can be extruded by the flange to deform when passing through the flange of the shell, the elastic wing can restore to the original shape automatically once passing through the flange, the elastic wing is located in the wing accommodating groove of the shell and is clamped with the flange of the shell, meanwhile, the second assembling part is assembled and connected to the first assembling part of the second worm, and therefore the assembly of the driving rod is completed.

Therefore, the blade angle adjusting device of the present invention does not need to repeatedly adjust the assembly angle of the driving rod, and can reduce the assembly time for consumers, thereby improving the assembly efficiency and the assembly convenience.

Preferably, the bottom end of the second assembling portion has a recess corresponding to the elastic wing, and when the elastic wing is deformed by pressure, the recess receives a portion of the elastic wing to prevent the two from interfering with each other.

Preferably, the cross-sectional shape of the wing receiving groove is conical, and the groove diameter of the wing receiving groove gradually decreases toward a direction away from the flange.

Preferably, the housing further has a ring groove, and the second worm further has a disk portion connected between the second rod portion and the first assembling portion and disposed in the ring groove of the housing. Through the technical characteristics, the second worm can be conveniently assembled and positioned.

Preferably, the first assembling portion is a polygonal column, the second assembling portion has a polygonal hole, and the second assembling portion is clamped to the first assembling portion through the polygonal hole, so that the first assembling portion and the second assembling portion cannot rotate relatively after being assembled, and thus the second worm drives the first worm to rotate.

Preferably, the transmission hole is semicircular, so that the first worm can drive a transmission shaft penetrating through the transmission hole to rotate.

The detailed structure, characteristics, assembly or use of the blade angle adjusting device for window curtains provided by the present invention will be described in the following detailed description of the embodiments. However, it will be understood by those skilled in the art that the detailed description and specific examples while indicating the embodiments 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 perspective view of a vane angle adjusting apparatus of the present invention.

Fig. 2 is an exploded perspective view of the blade angle adjusting apparatus of the present invention.

Fig. 3A is a sectional view of the vane angle adjusting apparatus of the present invention, mainly showing a state where the elastic wing is pressed and deformed by the flange.

Fig. 3B is similar to fig. 3A and mainly shows a state where the driving rod is assembled to the second worm.

[ description of reference ]

10-blade angle adjusting device

20-outer cover

21 a-shell

21 b-casing cover

22-perforation

23-first accommodation groove

24-second accommodation groove

25-ring groove

26-hole

27-wing receiving slot

28-bottom hole

29-Flange

30-Transmission Assembly

40-first worm

41-first rod part

42-end part

43-first worm gear

44-drive hole

50-second worm

51-second rod part

52-second worm gear

53-first Assembly

54-disc part

60-driving rod

61-second Assembly part

62-polygonal hole

63-groove

64-elastic flap

65-third rod part

66-hook hole

70-adjusting lever

72-hook part

74-drive shaft

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, 2 and 3B, the vane angle adjusting apparatus 10 of the present invention includes a housing 20, a transmission assembly 30, and a driving rod 60.

The housing 20 is composed of a case 21a and a case cover 21 b. The left and right side surfaces of the top end of the housing 20 are respectively provided with a through hole 22, the left and right through holes 22 are mutually communicated through a first accommodating groove 23, and the housing 20 is provided with a second accommodating groove 24 communicated with the first accommodating groove 23 at one side of the first accommodating groove 23. In addition, as shown in fig. 3B, the housing 20 has a ring groove 25, a hole 26 communicating with the ring groove 25, a tab receiving groove 27 communicating with the hole 26, and a bottom hole 28 communicating with the tab receiving groove 27 below the second receiving groove 24, wherein the tab receiving groove 27 and the bottom hole 28 are separated by a flange 29, the cross-sectional shape of the tab receiving groove 27 is tapered, and the groove diameter of the tab receiving groove 27 gradually decreases toward a direction away from the flange 29.

The transmission assembly 30 has a first worm 40, as shown in fig. 2 and 3B, the first worm 40 has a first rod portion 41, a first worm tooth portion 43 and a transmission hole 44, the first worm tooth portion 43 is disposed around the outer peripheral surface of the first rod portion 41 and located between two end portions 42 of the first rod portion 41, and the transmission hole 44 is non-circular (here, a semicircle is taken as an example, but not limited thereto) and axially penetrates through the first rod portion 41 to clamp a transmission shaft 74 (as shown in fig. 1) having the same cross-sectional shape. The first worm 40 is rotatably disposed in the housing 20, wherein the first worm tooth portion 43 is located in the first receiving groove 23, and the two end portions 42 of the first rod portion 41 are disposed in the two through holes 22 of the housing 20.

The transmission assembly 30 further includes a second worm 50, as shown in fig. 2 and fig. 3B, the second worm 50 includes a second rod portion 51, a second worm tooth portion 52, and a first assembling portion 53 (a polygonal column is taken as an example, but not limited thereto), the second worm tooth portion 52 is disposed around an outer peripheral surface of the second rod portion 51, and a top end of the first assembling portion 53 and a bottom end of the second rod portion 51 are connected together through a disc portion 54. The second worm 50 is disposed in the housing 20, wherein the second worm tooth portion 52 and the first assembling portion 53 are respectively located in the second receiving groove 24 and the receiving hole 26, and the disc portion 54 is embedded in the ring groove 25 for facilitating assembling and positioning, and the second worm tooth portion 52 is engaged with the first worm tooth portion 43 of the first worm 40, so that the second worm 50 can drive the first worm 40 to rotate.

The driving rod 60 has a second assembling portion 61, two elastic wings 64 and a third rod portion 65. The second engaging portion 61 has a polygonal hole 62; two elastic tabs 64 are located on two opposite sides of the second assembling portion 61 and are connected to the outer peripheral surface of the second assembling portion 61 at the top ends thereof; the top end of the third rod part 65 is connected with the bottom end of the second assembling part 61, and the bottom end of the third rod part 65 is provided with a hooking hole 66. As shown in fig. 3A and 3B, the driving rod 60 is inserted into the housing 20 from the bottom hole 28 of the housing 20 through the second assembling portion 61 during assembly, when the two elastic tabs 64 pass through the flange 29 of the housing 20, the two elastic tabs 64 are pressed and deformed by the flange 29, and once the two elastic tabs pass through the flange 29, the two elastic tabs 64 are located in the tab receiving groove 27 of the housing 20 and are mutually engaged with the flange 29 of the housing 20, and at the same time, the second assembling portion 61 is engaged with the first assembling portion 53 of the second worm 50 through the polygonal hole 62, so that the driving rod 60 can drive the second worm 50 to rotate together, thereby completing the assembly of the driving rod 60. After the assembly is completed, the bottom end of the third rod portion 65 protrudes out of the housing 20, when a user hooks the hooking hole 66 of the third rod portion 65 with a hook portion 72 of the adjusting rod 70 and applies a force to rotate the adjusting rod 70, the driving rod 60 is driven by the adjusting rod 70 to drive the second worm 50 to rotate through the second assembling portion 61, then the second worm 50 drives the first worm 40 to rotate, and the first worm 40 can achieve the effect of adjusting the blade angle through the transmission shaft 74 and other transmission components (such as a drum and a ladder rope) after rotating.

It should be added that, as shown in fig. 2 and fig. 3A, the bottom end of the second assembling portion 61 has two grooves 63, and each of the two grooves 63 corresponds to one elastic tab 64, so that when the two elastic tabs 64 are pressed and deformed by the flange 29, a part of the two elastic tabs is received by the two grooves 63 to avoid interference with the second assembling portion 61.

As can be seen from the above, the first worm 40 and the second worm 50 are originally hidden in the housing 20, and the driving rod 60 is a separate component, so that the driving rod 60 can be fixed to the second worm 50 in a self-assembling manner after a consumer purchases a related curtain product, and the assembling angle of the driving rod 60 does not need to be adjusted repeatedly when assembling the driving rod 60, which reduces the assembling time for the consumer, thereby improving the assembling efficiency and increasing the assembling convenience.

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. A vane angle adjustment device for a window covering, comprising:

the shell is provided with two opposite through holes, a bottom hole, a wing piece accommodating groove and a flange, the wing piece accommodating groove is positioned above the bottom hole and communicated with the bottom hole, and the flange is positioned between the bottom hole and the wing piece accommodating groove;

the first worm is provided with a first rod part, a first worm tooth part and a transmission hole, the first worm tooth part is annularly arranged on the peripheral surface of the first rod part and positioned between two end parts of the first rod part, the transmission hole is non-circular and axially penetrates through the first rod part, the first worm is rotatably arranged in the shell and penetrates through the equal penetrating hole of the shell by the equal end part of the first rod part, the second worm is provided with a second rod part, a second worm tooth part and a first assembling part, the second worm tooth part is annularly arranged on the peripheral surface of the second rod part, the first assembling part is connected to the bottom end of the second rod part, and the second worm is rotatably arranged in the shell and is engaged with the first worm tooth part of the first worm by the second worm tooth part; and

the driving rod is provided with a second assembling portion, an elastic wing piece and a third rod portion, the top end of the elastic wing piece is connected to the outer peripheral face of the second assembling portion, the top end of the third rod portion is connected to the bottom end of the second assembling portion, the second assembling portion of the driving rod is located in the shell and assembled to the first assembling portion of the second worm, the elastic wing piece of the driving rod is located in the wing piece accommodating groove of the shell and clamped to the flange of the shell, and the third rod portion of the driving rod penetrates through the bottom hole of the shell and is provided with a part located outside the shell.

2. The blade angle adjusting apparatus for window blinds according to claim 1, wherein the bottom end of the second combining portion has a recess corresponding to the elastic wing, and the recess receives a portion of the elastic wing when the elastic wing is deformed by pressure.

3. The apparatus as claimed in claim 1, wherein the cross-sectional shape of the vane receiving groove is tapered, and the groove diameter of the vane receiving groove is gradually reduced toward a direction away from the flange.

4. The blade angle adjusting device for window curtains as claimed in claim 1, wherein the housing further has an annular groove, and the second worm further has a disk portion connected between the second rod portion and the first assembling portion and embedded in the annular groove of the housing.

5. The device of claim 1, wherein the first connecting portion is a polygonal pillar, the second connecting portion has a polygonal hole, and the second connecting portion is engaged with the first connecting portion through the polygonal hole.

6. The blade angle adjusting apparatus for window curtains as claimed in claim 1, wherein the driving hole has a semicircular shape.