Multi-stage synchronous coupling device for bent steel hollow glass venetian blind

Abstract

The utility model relates to the technical field of building sunshade engineering, and particularly discloses a multi-stage synchronous coupling device for a bent steel hollow glass shutter blind, which is used for solving the problems of torque fluctuation and poor synchronism caused by insufficient angle compensation of a traditional coupling in bent arc transmission. The device comprises a split type symmetrical shell, a power input shaft, a power output shaft, a first bevel gear set, a second bevel gear set, a straight gear phase correction set and a kidney-shaped punching plate connecting structure, wherein the first bevel gear set and the second bevel gear set are orthogonally meshed. The orthogonal included angle between the axis of the first bevel gear set and the axis of the second bevel gear set is 90 degrees, and deflection compensation of the input / output shaft in a three-dimensional space is achieved. The straight gear set corrects and eliminates transmission accumulative errors through meshing phase difference; the kidney-shaped punching plate absorbs assembly deviation through elastic deformation, and a plate body shaft hole of the kidney-shaped punching plate is in interference fit with the rotating shaft. According to the utility model, the problems of space adaptation and dynamic synchronous control of the multi-section transmission shaft of the bent tempered glass venetian blind are solved.

Description

Technical Field

[0001] This utility model relates to the field of building sunshade engineering technology, and in particular to a multi-stage synchronous coupling device for curved steel hollow glass louver blinds. Background Technology

[0002] According to the "General Technical Requirements for Building Shading Products," the thickness of the hollow layer in curved steel glass is generally 18-24mm, and the radius of curvature R of the curved surface is usually 800-3000mm. In such narrow and curved cavities, conventional linear drive shafts cannot be directly used. The minimum bending radius of the solid metal shaft must meet R≥1200mm. For sharp bends with R<1000mm, the drive shaft must be divided into multiple linear shaft segments (length L≤1.2m). The synchronization requirements of the segmented shaft system are stringent: each segment of the linear shaft must be connected by a coupling and maintain angular synchronization within ±1°. Otherwise, the height deviation of the venetian blinds will be >3mm / m.

[0003] Existing coupling technologies expose the following core problems when connecting multiple linear shafts:

[0004] Insufficient spatial compensation capability: the cross shaft universal joint can only compensate for ≤30° deflection in a single plane, while the curved cavity requires the coupling to achieve multi-directional compensation of more than ±5° in three-dimensional space.

[0005] Transmission nonlinear distortion: When multiple universal joints are connected in series, speed fluctuations occur. With each additional coupling node, the torque transmission efficiency decreases by 3-5%, causing the venetian blind to jam during lifting and lowering. Utility Model Content

[0006] The purpose of this invention is to propose a multi-stage synchronous coupling device for curved steel hollow glass blinds, so as to solve the problems of torque fluctuation and poor synchronization caused by insufficient angle compensation in the transmission of curved steel using traditional universal joint couplings.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A multi-stage synchronous coupling device for curved steel insulated glass venetian blinds includes the following structure:

[0009] The split-shell assembly is formed by assembling a first shell and a second shell that are symmetrical to each other.

[0010] The power shaft assembly includes a power input shaft and a power output shaft, which are symmetrically mounted on the left and right housings respectively. They are cylindrical shafts used to connect to external drive rods.

[0011] The first bevel gear transmission assembly includes a first driving bevel gear and a first driven bevel gear that mesh orthogonally; the first driving bevel gear is fixed on the power input shaft, and the first driven bevel gear is fixed on the power output shaft;

[0012] The second bevel gear transmission assembly includes a second driving bevel gear and a second driven bevel gear that mesh orthogonally; the second driven bevel gear is fixed on the power output shaft.

[0013] The spur gear transmission assembly includes a first spur gear and a second spur gear that mesh with each other; the first spur gear and the first driven bevel gear are coaxially mounted on a first rotating shaft and installed inside the first housing; the second spur gear and the second driving bevel gear are coaxially mounted on a second rotating shaft and installed inside the second housing.

[0014] In a further optimized technical solution, the input end of the power input shaft is provided with a regular hexagonal inner hole for connecting to the drive motor shaft or the upper drum shaft.

[0015] In a further optimized technical solution, the output end of the power output shaft is provided with a regular hexagonal inner hole for connecting to the drum shaft.

[0016] In a further optimized technical solution, the included angle between the gear axes of the first driving bevel gear and the first driven bevel gear is 90°.

[0017] In a further optimized technical solution, the included angle between the gear axes of the second driving bevel gear and the second driven bevel gear is 90°.

[0018] In a further optimized technical solution, both ends of the first rotating shaft and the second rotating shaft are connected by a waist-shaped perforated plate. The plate body is composed of a rectangle and semicircles symmetrically arranged on both sides of the rectangle. A shaft hole is opened in the center of the semicircles on both sides. The shafts of the first rotating shaft and the second rotating shaft are inserted into the shaft hole of the plate body to form an interference fit.

[0019] A further preferred technical solution is that the first housing and the second housing have the same structure, are U-shaped, and have corresponding housing shaft holes on their two arms and a power shaft hole on their bottom surface; the first rotating shaft is inserted into the housing shaft hole of the first housing to form an interference fit; the second rotating shaft is inserted into the housing shaft hole of the second housing to form an interference fit; the power input shaft is installed in the power shaft hole of the first housing; and the power output shaft is installed in the power shaft hole of the second housing.

[0020] This utility model achieves the following significant technical advantages through its innovative structural design:

[0021] 1. Improved three-dimensional spatial angle compensation capability

[0022] By using the orthogonal meshing design of the first and second bevel gear transmission sets (with a 90° angle between the gear axes), the input and output shafts can achieve ±8° deflection compensation in the X / Y / Z three-dimensional space. This significantly improves the single-plane compensation capability compared to the traditional universal joint, effectively eliminating rigid interference in the transmission of curved steel and glass surfaces.

[0023] 2. Breakthrough in synchronization accuracy of multi-segment transmission

[0024] In the spur gear transmission group, the first and second spur gears mesh with each other to form a phase correction mechanism. In conjunction with the elastic deformation compensation of the waist-shaped perforated plate (the plate shaft hole and the rotating shaft are interference fit), the cumulative angle deviation after the multi-section coupling is connected in series is suppressed within ±0.5°, and the height deviation of the venetian blind is ≤1mm / m.

[0025] 3. Enhanced adaptability to extreme working conditions

[0026] The shell adopts a split-type assembly structure (first shell and second shell), combined with the anti-slip design of the regular hexagonal inner hole, maintaining a torque transmission efficiency of ≥97% in the temperature range of -40℃ to +120℃, and a starting torque of ≤0.8N·m (traditional solution ≥1.5N·m), meeting the low temperature performance requirements of JG / T455-2014 building sunshade products.

[0027] 4. Compact structure adapted to narrow cavities

[0028] The topology-optimized concave housing has an outer diameter ≤ Φ45mm and an axial length ≤ 65mm, which is suitable for installation with an 18mm hollow layer. It reduces the volume by 40% compared to traditional couplings. At the same time, through the interference fit between the housing shaft hole and the rotating shaft, it achieves a torsional stiffness of 12kN·m / rad. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 2 This is a schematic diagram of the first shell structure.

[0031] Figure 3 This is a schematic diagram of the power input shaft structure.

[0032] In the figure: 101-first housing, 102-second housing, 201-power input shaft, 202-power output shaft; 301-first driving bevel gear, 302-first driven bevel gear, 303-second driving bevel gear, 304-second driven bevel gear, 401-first spur gear, 402-second spur gear, 501-first rotating shaft, 502-second rotating shaft, 6-waist-shaped perforated plate, 201a-regular hexagonal inner hole, 101a-housing shaft hole, 101b-power shaft hole. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figure 1-3 As shown, this utility model discloses a multi-stage synchronous coupling device for curved steel insulated glass venetian blinds, the structure of which includes:

[0035] Split-type shell assembly: includes a first shell 101 and a second shell 102, which have the same structure and are symmetrically positioned. Figure 2 Only the structure of the first shell is shown in the image.

[0036] The first housing 101 and the second housing 102 are assembled together. The housing is U-shaped, with housing shaft holes 101a symmetrically opened on its two arms and power shaft holes 101b on the bottom surface. The material is 6061-T6 aluminum alloy (wall thickness 2mm).

[0037] The power shaft assembly includes a power input shaft 201 and a power output shaft 202, both of which have identical structures and are symmetrically positioned. Figure 3 Only the structure of the power input shaft is shown in the image.

[0038] The power input shaft 201 and the power output shaft 202 are respectively inserted into the power shaft hole 101b of the housing, and the shaft ends are machined with regular hexagonal inner holes 201a to connect with the drive linkage.

[0039] The shaft is positioned in the housing by an angular contact ball bearing with a preload of 0.05 mm.

[0040] Bevel gear transmission system: first bevel gear transmission group and second bevel gear transmission group.

[0041] The first bevel gear transmission assembly includes: a first driving bevel gear 301 and a first driven bevel gear 302; the first driving bevel gear 301 is fixedly connected to the power input shaft 201 and meshes orthogonally with the first driven bevel gear 302 (gear axis angle 90°);

[0042] The second bevel gear transmission assembly includes a second driving bevel gear 303 and a second driven bevel gear 304. The second driven bevel gear 304 is fixedly connected to the power output shaft 202 and meshes orthogonally with the second driving bevel gear 303 (gear axis angle 90°).

[0043] Spur gear phase correction group: including a first spur gear 401 and a second spur gear 402 that mesh with each other.

[0044] The first spur gear 401 and the first driven bevel gear 302 are coaxially mounted on the first rotating shaft 501; both ends of the first rotating shaft 501 are respectively inserted into the housing shaft hole of the first housing 101 to form an interference fit.

[0045] The second spur gear 402 and the second driving bevel gear 303 are coaxially mounted on the second rotating shaft 502; both ends of the second rotating shaft 502 are respectively inserted into the housing shaft holes of the second housing 102 to form an interference fit.

[0046] Waist-shaped perforated plate connection structure:

[0047] The waist-shaped perforated plate 6 is composed of a rectangular main body and two semi-circular ends. A shaft hole is opened at the center of the two semi-circles. The diameter of the shaft hole is interference-fitted with the rotating shaft (501, 502). The two rotating shafts (501, 502) are connected across the shell through the two waist-shaped perforated plates 6.

[0048] Working principle:

[0049] The drive motor torque is inserted through the hexagonal inner hole 201a of the power input shaft 201, driving the first active bevel gear 301 to rotate. Through a 90° power steering of the first bevel gear pair (301 / 302), the torque is transmitted to the first rotating shaft 501. After the spur gear set (401 / 402) speeds up and corrects the phase error, it drives the second active bevel gear 303 on the second rotating shaft 502. The second bevel gear pair (303 / 304) again performs a 90° power steering, and finally, the corrected synchronous torque is output by the power output shaft 202. The waist-shaped perforated plate 6 absorbs accumulated assembly errors through elastic deformation.

[0050] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage synchronous coupling device for a curved steel hollow glass louver blind, characterized in that, The application relates to a split type shell, which is composed of a first shell and a second shell. The split type shell is composed of a first shell and a second shell. The power input and output shaft group comprises a power input shaft and a power output shaft, which are symmetrically arranged on the left and right shells and are in the form of cylindrical shafts and are used for connecting external driving rods. The first bevel gear transmission group comprises a first driving bevel gear and a first driven bevel gear. The second bevel gear transmission group comprises a second driving bevel gear and a second driven bevel gear. The straight gear transmission group comprises a first straight gear and a second straight gear.

2. A multi-stage synchronous coupling device for a curved steel hollow glass louver blind according to claim 1, characterized in that, The input end of the power input shaft is provided with a regular hexagonal inner hole which is used for connecting a driving motor shaft or a superior reel shaft.

3. A multi-stage synchronous coupling device for a curved steel hollow glass louver blind according to claim 1, characterized in that, The output end of the power output shaft is provided with a regular hexagonal inner hole which is used for connecting a reel shaft.

4. A multi-stage synchronous coupling device for a curved steel hollow glass louver blind according to claim 1, characterized in that, The gear axis angle of the first driving bevel gear and the first driven bevel gear is 90 DEG.

5. A multi-stage synchronous coupling device for a curved steel hollow glass louver blind according to claim 1, characterized in that, The gear axis angle of the second driving bevel gear and the second driven bevel gear is 90 DEG.

6. A multi-stage synchronous coupling device for a curved steel louvered glass blind as defined in claim 1, wherein, The two ends of the first shaft and the second shaft are connected through a waist-shaped punched plate.

7. A multi-stage synchronous coupling device for a curved steel hollow glass louver blind according to claim 1, characterized in that, The first shell and the second shell are identical in structure and are in the form of a concave letter, and are symmetrically provided with shell shaft holes on the two arms and are provided with a power shaft hole on the bottom surface. The first shaft is inserted into the shell shaft hole of the first shell and is in interference fit with the shell shaft hole. The second shaft is inserted into the shell shaft hole of the second shell and is in interference fit with the shell shaft hole. The power input shaft is arranged in the power shaft hole of the first shell. The power output shaft is arranged in the power shaft hole of the second shell.

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