CN109138803B - Separate type blade angle adjusting mechanism - Google Patents

Abstract

A separate blade angle adjustment mechanism includes a housing, a worm wheel and a drive assembly, wherein the worm wheel is rotatably disposed in the housing, the drive assembly is rotatably disposed in the housing and has a first drive rod and a second drive rod, the first drive rod is located in the housing and has a worm portion meshing with the worm wheel and a clamping portion connected to the worm portion, wherein the clamping portion has an axial hole and two positioning holes oppositely connected to the axial hole, the top end of the second drive rod is located in the housing and has an axial portion and two positioning protrusions oppositely disposed on the axial portion, wherein the axial portion is inserted into the axial hole of the first drive rod, and the positioning protrusion is clamped into the positioning hole of the first drive rod. In this way, the first and second drive rods can be assembled by consumers themselves to avoid damage to the blades or themselves during packaging or transportation.

Description

Separate blade angle adjustment mechanism

technical field

The present invention relates to curtains, in particular to a separate blade angle adjustment mechanism for curtains.

Background technique

In order to change the amount of light transmitted from outside light into the room, a blade angle adjustment mechanism is set in the structure of the curtain to control the arrangement angle of the blades. In the prior art, the blade angle adjustment mechanism mainly includes a casing, a worm gear and a worm. The casing is installed in the upper beam of the curtain, the worm gear is rotatably installed in the casing, and one end of the worm is inserted into the casing. And engaged with the worm gear, the other end of the worm goes out of the casing and is exposed outside the upper beam for a rotating rod to hook, so that the user can use the aforementioned rotating rod to drive the worm, and when the worm is driven, it can be The worm wheel is driven to rotate, and then the worm wheel passes through other transmission components to achieve the purpose of adjusting the blade angle.

However, since the worm and the worm gear are already installed in the housing when the product leaves the factory, and consumers are not allowed to assemble it after purchase, the end of the worm exposed on the upper beam can easily be squeezed to the uppermost blade after the product is packaged. Cause the blade to be deformed or damaged, or even break due to collision during transportation. Therefore, the aforementioned structure needs to be improved.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a separate blade angle adjustment mechanism, which allows consumers to assemble by themselves, so as to avoid damage to the blade or breakage of its own structure during packaging or transportation.

In order to achieve the above objective, the separate blade angle adjustment mechanism of the present invention includes a casing, a worm gear and a driving component. The worm gear is rotatably arranged in the housing; the driving assembly is rotatably arranged in the housing and has a first driving rod and a second driving rod, the first driving rod is located in the housing and There is a worm part and a clamping part, the worm part is engaged with the worm wheel, the clamping part is connected with the worm part and has a shaft hole and two opposite positioning holes, the axial direction of the shaft hole is parallel to the worm part The two positioning holes are communicated with the shaft hole in the axial direction, the top end of the second driving rod is located in the casing, and the bottom end of the second driving rod is located outside the casing, wherein the second driving rod The top end has a shaft portion and two opposite positioning convex portions, the shaft portion is penetrated in the shaft hole of the clamping portion of the first driving rod, the two positioning convex portions are arranged on the outer peripheral surface of the shaft portion and are respectively It is clamped in one of the positioning holes of the clamping portion of the first driving rod, so that the first and second driving rods are assembled together. Thereby, the first and second driving rods can be assembled by consumers after completing the purchase, so as to avoid damage to the blades or their own structures during packaging or transportation.

Preferably, both the shaft hole and the shaft portion have a non-circular cross-sectional shape, and the relative rotation between the first and second driving rods is further restricted by the interlocking between the shaft hole and the shaft portion. .

Preferably, the bottom end of the second driving rod is provided with a hook hole for hooking a rotary rod, so that the driving assembly can be rotated by the driving of the rotary rod.

Description of drawings

FIG. 1 is an external perspective view of a separate blade angle adjustment mechanism of the present invention.

FIG. 2 is an exploded perspective view of the separate blade angle adjustment mechanism of the present invention.

FIG. 3 is a bottom view of the first driving member provided by the separate blade angle adjustment mechanism of the present invention.

4 is a top view of the first driving member provided by the separate blade angle adjustment mechanism of the present invention.

5 is a combined cross-sectional view of the separate blade angle adjustment mechanism of the present invention.

【Symbol Description】

10 Separate blade angle adjustment mechanism 12 Rotating shaft

14 Rod 20 Shell

22 Half shell 24 First installation slot

26 Second installation slot 30 Worm gear

32 rectangular snap holes 40 drive components

50 The first drive rod 51 The worm part

52 Snap-in part 53 Shaft hole

54 Positioning hole 55 Engagement groove

60 Second drive lever 61 Shaft

62 Positioning convex part 63 Joint part

64 notch 65 hook hole

Detailed ways

The following describes the technical content and features of the present invention in detail with the help of the listed preferred embodiments in conjunction with the drawings. , "external" and other directional adjectives are only illustrative terms based on the normal usage direction, and are not intended to limit the scope of claims.

Please refer to FIGS. 1 to 2 , the split blade angle adjustment mechanism 10 of the present invention includes a casing 20 , a worm gear 30 , and a driving component 40 .

The casing 20 is formed by butting two half casings 22 with each other. The casing 20 forms a first mounting groove 24 horizontally penetrating the left and right opposite sides and an obliquely penetrating top between the two half casings 22 . , The second installation groove 26 on the two opposite sides of the bottom.

The worm wheel 30 is rotatably disposed in the first installation slot 24 of the housing 20 and has a rectangular clamping hole 32 for a shaft 12 to pass through, so that the shaft 12 can rotate synchronously with the worm wheel 30 .

The driving assembly 40 has a first driving rod 50 and a second driving rod 60, wherein:

The first drive rod 50 is rotatably disposed in the second installation groove 26 of the housing 20 and has a worm portion 51 and a clamping portion 52 . The worm portion 51 is engaged with the worm wheel 30 , and the clamping portion 52 is integrally connected. The worm portion 51 has a shaft hole 53, two opposite positioning holes 54 and a circular engaging groove 55, wherein: the shaft hole 53 extends from the bottom end surface of the clip portion 52 in the direction toward the worm portion 51, and the shaft The axial direction of the hole 53 is parallel to the axial direction of the worm part 51; the axial direction of the positioning hole 54 is perpendicular to the axial direction of the shaft hole 53, one end of the positioning hole 54 is connected to the top of the shaft hole 53, and one end of the positioning hole 54 is clamped The outer peripheral surface of the portion 52 forms an opening; the engaging groove 55 is adjacent to the bottom end of the shaft hole 53 and communicates with the shaft hole 53 .

The second driving rod 60 is rotatably disposed in the second installation groove 26 of the housing 20 . The top end of the second driving rod 60 is located in the housing 20 and has a shaft portion 61 , two opposite positioning protrusions 62 and a The circular joint portion 63, wherein: the shaft portion 61 has a notch 64, so that the shaft portion 61 has the ability to elastically deform through the notch 64 to facilitate assembly; the positioning convex portion 62 extends from the outer peripheral surface of the top end of the shaft portion 61 along the shaft The radial direction of the portion 61 integrally extends outward; the circular engaging portion 63 is adjacent to the bottom end of the shaft portion 61 . In addition, the bottom end of the second driving rod 60 is located outside the casing 20 and has a hooking hole 65 for a hooking rod 14 to hook.

When the first and second driving rods 50 and 60 are assembled, the second driving rod 60 passes through the shaft hole 53 of the first driving rod 50 through the shaft portion 61 , and at the same time passes through the two positioning protrusions 62 They are respectively clamped in the positioning holes 54 of the engaging portion 52 of the first driving rod 50 to ensure that the two cannot be disengaged after the assembly is completed. The rotating rod 14 is rotated in the hole 63 with force, so that the rotating rod 14 drives the worm wheel 30 through the second driving rod 60 .

In order to further ensure that the first and second driving rods 50 and 60 cannot rotate relative to each other after the assembly is completed, as shown in FIGS. 3 to 5 , the shaft hole 53 of the first driving rod 50 and the The shaft portion 61 has a non-circular cross-sectional shape. In this embodiment, the cross-sectional shape of the shaft hole 53 and the cross-sectional shape of the shaft portion 61 are both hexagonal, but this shape is not limited, and other shapes can also be used. The shape of the polygon is rendered.

From the above, it can be seen that the worm gear 30 and the first driving rod 50 are originally hidden in the housing 20, and the second driving rod 60 is a separate and independent component, which allows consumers to assemble by themselves after purchasing related curtain products. The second driving rod 60 is fixed to the first driving rod 50 in a manner. In other words, the second driving rod 60 will not protrude out of the casing 20 and the upper beam during the process of packing and transporting, which not only prevents the second driving rod 60 from being broken by improper external force, but also avoids The blades are crushed or deformed by the second driving rod 60 .

Claims (6)

1. A split vane angle adjustment mechanism, comprising:

a housing;

a worm gear rotatably disposed in the housing; and

a drive commentaries on classics subassembly, rotationally locate this casing and have a first commentaries on classics pole and a second and drive the commentaries on classics pole, this first commentaries on classics pole is located this casing and has a worm part and a joint portion, this worm part meshing connects in this worm wheel, this joint portion connects this worm part and has a shaft hole and two relative locating holes, the axial direction in this shaft hole is on a parallel with the axial of this worm part, this two locating holes radially communicate in this shaft hole, the top that this second driven the commentaries on classics pole is located this casing and has a axial region and two relative location convex parts, this axial region wears to locate in the shaft hole of this first joint portion that drives the commentaries on classics pole, the outer peripheral face of this axial region and respectively the joint in this locating hole of this first joint portion that drives the commentaries on classics pole are located to this second, the bottom that this second driven the commentaries on classics pole is located outside.

2. The split vane angle adjustment mechanism of claim 1, wherein the cross-sectional shape of the shaft hole and the cross-sectional shape of the shaft portion are both non-circular.

3. The split vane angle adjustment mechanism of claim 2, wherein the cross-sectional shape of the shaft hole and the cross-sectional shape of the shaft portion are both hexagonal.

4. The separate blade angle adjusting mechanism of claim 1, wherein the engaging portion of the first rotating member has an engaging groove adjacent to the shaft hole, and the second rotating member has an engaging portion adjacent to the shaft portion, the engaging portion being embedded in the engaging groove.

5. The split vane angle adjustment mechanism of claim 4, wherein the cross-sectional shape of the engagement groove and the cross-sectional shape of the engagement portion are both circular.

6. The split vane angle adjustment mechanism of claim 1, wherein the second driving rod has a hooking hole at a bottom end thereof.

Images