A worm assembly, a ball running and a vertical blind

Abstract

The utility model relates to electric window curtain technical field discloses a kind of worm assembly of pearl, pearl and vertical curtain, and its technical scheme main point is including pivot and the worm of being sleeved on pivot, pivot and worm are respectively provided with first tooth ring and second tooth ring, and first tooth ring and second tooth ring engage, when pivot rotates, it can drive worm rotation by the engagement of first tooth ring and second tooth ring, to can drive the rotation of worm gear of pearl;Compared with the mode that the pivot and the worm circumferential fixation are realized by positioning convex rib and positioning groove in prior art, the pivot and the worm circumferential fixation are realized by the engagement of first tooth ring and second tooth ring, the radial deformation of skip tooth is changed into axial movement, the disengagement between first tooth ring and second tooth ring is realized by the deformation of pearl shell, skip tooth is completed, without the deformation of pivot and worm itself, the deformation of pearl shell is more easy, and the corresponding size requirement of pivot and worm is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and more specifically to a worm gear assembly for ball bearings, ball bearings, and a vertical curtain. Background Technology

[0002] Among electric curtains, including vertical curtains, also known as dream curtains, the curtain slats can be rotated by a curtain motor. Each slat is connected to a beaded roller. The curtain motor is connected to a drive rod, which is connected to the rotating shaft in the beaded roller. This drive rod can rotate the rotating shaft, which in turn drives the curtain slats to rotate through a worm gear, thus achieving the dimming function. In the utility model patent application with application number CN202421838791.9, a curtain bead gear assembly, curtain beads and a dream curtain are disclosed. It includes a bead shaft and a bead worm. The bead worm is sleeved on the bead shaft and includes a positioning groove. The bead shaft includes a positioning protrusion. By cooperating with the positioning groove at a corresponding angle, the bead shaft and the bead worm are circumferentially fixed at a corresponding angle. Because there are many beads in the same vertical curtain, after the initial installation, the angles of each bead are different. During the debugging process, the bead angles need to be adjusted to make the angles of each bead consistent. During the adjustment process, the positioning protrusion will cross the corresponding positioning groove, which is called "skipping teeth". In the "skipping teeth" state, the deformation of the positioning protrusion needs to be radially reduced or the deformation of the inner side of the bead worm needs to be radially expanded. Since the bead shaft and the bead worm are both round, the deformation is difficult and the corresponding dimensions of the positioning protrusion and the positioning groove need to be precisely controlled. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a worm gear assembly for ball bearings, ball bearings and vertical curtain, which reduces the corresponding size requirements of the shaft and worm gear and facilitates tooth skipping.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a ball bearing worm gear assembly, comprising a rotating shaft and a worm gear sleeved on the rotating shaft, wherein a first toothed ring and a second toothed ring are respectively provided on the rotating shaft and the worm gear, and the first toothed ring and the second toothed ring mesh with each other.

[0005] As a further improvement of this utility model, one end of the rotating shaft is integrally formed with a first convex ring, and the first toothed ring is formed on the side of the first convex ring facing the worm gear.

[0006] As a further improvement of this utility model, the second toothed ring is formed on the side of the worm gear facing the first convex ring.

[0007] As a further improvement of this utility model, the first toothed ring is formed on one end face of the rotating shaft.

[0008] As a further improvement of this utility model, a second convex ring is formed at one end of the worm gear near the first toothed ring, and the second toothed ring is formed on the inner side of the second convex ring.

[0009] As a further improvement of this utility model, a third convex ring is formed at the end of the rotating shaft away from the first gear ring, and the third convex ring abuts against the worm gear.

[0010] As a further improvement of this utility model, a polygonal through hole is provided on the rotating shaft.

[0011] As a further improvement of this utility model, helical teeth are formed on the outer wall surface of the worm.

[0012] The ball bearing includes one type of ball bearing worm gear assembly as described above.

[0013] Vertical curtain, including the aforementioned worm gear assembly with ball bearings.

[0014] The beneficial effects of this utility model are as follows: When the shaft rotates, it can drive the worm to rotate through the meshing of the first toothed ring and the second toothed ring. The outer wall of the worm is formed with helical teeth. The worm meshes with the worm wheel of the ball bearing through the helical teeth, thereby driving the worm wheel of the ball bearing to rotate and realizing the transmission of power. Compared to the existing technology that uses positioning protrusions and positioning grooves to fix the shaft and worm in the circumferential direction, this method uses the meshing of the first and second toothed rings to fix the shaft and worm in the circumferential direction. This changes the radial deformation of the skipped teeth to axial movement. The first and second toothed rings are disengaged by the deformation of the ball bearing shell, thus completing the skipped teeth. This method does not require deformation of the shaft and worm themselves, and the deformation of the ball bearing shell is easier, reducing the requirements for the corresponding dimensions of the shaft and worm. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the rotating shaft in this utility model; Figure 3 This is a schematic diagram of the worm gear in this utility model.

[0016] Reference numerals: 1. Shaft; 11. First convex ring; 2. Worm; 3. First gear ring; 4. Second gear ring; 5. Polygonal through hole; 6. Helical tooth. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0018] Reference Figures 1 to 3 As shown, a worm gear assembly for a ball bearing in this embodiment includes a rotating shaft 1 and a worm gear 2 sleeved on the rotating shaft 1. A first toothed ring 3 and a second toothed ring 4 are respectively provided on the rotating shaft 1 and the worm gear 2, and the first toothed ring 3 and the second toothed ring 4 mesh with each other, so that when the rotating shaft 1 rotates, it can drive the worm gear 2 to rotate through the meshing of the first toothed ring 3 and the second toothed ring 4. Helical teeth 6 are formed on the outer wall surface of the worm gear 2, and the worm gear 2 meshes with the worm wheel of the ball bearing through the helical teeth 6, thereby driving the worm wheel of the ball bearing to rotate and realizing the transmission of power. Compared to the existing technology that uses positioning protrusions and positioning grooves to fix the shaft 1 and worm 2 circumferentially, this method uses the engagement of the first toothed ring 3 and the second toothed ring 4 to fix the shaft 1 and worm 2 circumferentially. This method changes the radial deformation of the skipped teeth to axial movement. The first toothed ring 3 and the second toothed ring 4 are disengaged by the deformation of the ball bearing shell, thus completing the skipped teeth. This method does not require deformation of the shaft 1 and worm 2 themselves, and the deformation of the ball bearing shell is easier, reducing the requirements for the corresponding dimensions of the shaft and worm.

[0019] Reference Figure 2 and Figure 3 As shown, in this embodiment, a first protruding ring 11 is integrally formed on one end of the rotating shaft 1. The first protruding ring 11 is formed on the outer side of the rotating shaft 1 and is arranged circumferentially along the central axis of the rotating shaft 1. A first toothed ring 3 is formed on the side of the first protruding ring 11 facing the worm 2. The first protruding ring 11 protrudes from the outer surface of the rotating shaft 1, so that the first toothed ring 3 can easily mesh with the second toothed ring 4 on the worm 2.

[0020] The second toothed ring 4 is formed on the side of the worm gear 2 facing the first convex ring 11.

[0021] In another embodiment, a first toothed ring 3 is formed on one end face of the rotating shaft 1, and a second convex ring is formed on one end of the worm gear 2 near the first toothed ring 3. A second toothed ring 4 is formed on the inner side of the second convex ring. When the first toothed ring 3 meshes with the second toothed ring 4 located on the second convex ring, the first toothed ring 3 and the second toothed ring 4 are hidden between the rotating shaft 1 and the worm gear 2.

[0022] A third protruding ring is formed at the end of the rotating shaft 1 away from the first toothed ring 3. The third protruding ring abuts against the worm 2 and serves as a limiting ring.

[0023] The rotating shaft 1 has a polygonal through hole 5, which is connected to the transmission rod. The transmission rod passes through the polygonal through hole 5, so that when the curtain motor drives the transmission rod to rotate, the transmission rod can drive the rotating shaft 1 to rotate synchronously.

[0024] Ball bearing, including the aforementioned ball bearing worm gear assembly.

[0025] Vertical curtain, including the aforementioned worm gear assembly for ball bearings.

[0026] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A ball bearing worm gear assembly, characterized in that: It includes a rotating shaft (1) and a worm gear (2) sleeved on the rotating shaft (1). The rotating shaft (1) and the worm gear (2) are respectively provided with a first toothed ring (3) and a second toothed ring (4), and the first toothed ring (3) and the second toothed ring (4) mesh with each other.

2. The worm gear assembly for ball bearings according to claim 1, characterized in that: One end of the rotating shaft (1) is integrally formed with a first convex ring (11), and the first toothed ring (3) is formed on the side of the first convex ring (11) facing the worm (2).

3. The worm gear assembly for ball bearings according to claim 2, characterized in that: The second toothed ring (4) is formed on the side of the worm (2) facing the first convex ring (11).

4. The worm gear assembly for ball bearings according to claim 1, characterized in that: The first toothed ring (3) is formed on one end face of the rotating shaft (1).

5. A ball bearing worm gear assembly according to claim 4, characterized in that: The worm (2) has a second convex ring formed at one end near the first toothed ring (3), and the second toothed ring (4) is formed on the inner side of the second convex ring.

6. A ball bearing worm gear assembly according to claim 5, characterized in that: A third protruding ring is formed at one end of the rotating shaft (1) away from the first toothed ring (3), and the third protruding ring abuts against the worm (2).

7. A ball bearing worm gear assembly according to any one of claims 1 to 6, characterized in that: A polygonal through hole (5) is provided on the rotating shaft (1).

8. A ball bearing worm gear assembly according to any one of claims 1 to 6, characterized in that: The worm (2) has helical teeth (6) formed on its outer wall surface.

9. Rollerball, characterized by: The worm gear assembly including the ball bearing as described in any one of claims 1 to 8.

10. A vertical curtain, characterized in that: The worm gear assembly including the ball bearing as described in any one of claims 1 to 8.

Images