A built-in magnetic control handle for hollow blinds

Abstract

The present invention discloses a built-in magnetic control handle for a hollow blind, comprising a shell, wherein a magnet mounting groove and two roller grooves are provided on the lower end surface of the shell, and the two roller grooves are distributed on the front and rear sides of the magnet mounting groove; a limiting mechanism for guiding a pull rope and a fixed pulley for cooperating with the pull rope are provided on the upper end surface of the shell, and the pull rope cooperates with the fixed pulley through the limiting mechanism; the advantage is that the overall length is shortened while ensuring structural reliability, thereby being suitable for small blinds.

Description

Technical Field

[0001] The invention belongs to the technical field of blinds, and in particular relates to a built-in magnetic control handle of a hollow blind. Background Art

[0002] Venetian blinds are windows with blinds installed, generally used for indoor and outdoor ventilation and sunshade. With the improvement of people's living standards, people have designed a structure with built-in blinds in double-layer glass. The blinds are located between the double-layer glass, and the raising and lowering and flipping of the blinds are completed by control components. Conventional control components include an internal magnetic control handle located between the double-layer glass and an external magnetic control handle located on the outer surface of the glass. The internal magnetic control handle is connected to a pull rope (traction rope or steering rope). The external magnetic control handle and the internal magnetic control handle are connected by magnetic force. When the user moves the external magnetic control handle up and down, the external magnetic control handle drives the internal magnetic control handle to move synchronously, thereby pulling the pull rope to complete the raising and lowering or flipping of the blinds.

[0003] Conventional built-in magnetic control handles, such as the Chinese utility model patent number ZL202121376771.2 (CN214886728U), "A Magnetic Control Handle for Venetian Blinds," include a housing with a pulley mounting slot at one end, a roller at one side of the housing, a magnet mounting position between the rollers, and an iron plate mounting slot on the back side of the magnet mounting position. The iron plate mounting slot includes a step for adjusting the position of the iron plate. A pulley is provided in the pulley mounting slot, which engages with the pulley as the pull cord passes through the housing. The pulley acts as a guide, preventing the cord from tangling and reducing friction between the cord and the housing, thereby extending the cord's service life and improving operating comfort.

[0004] It can be seen that a conventional shell is provided with more parts, and the parts are arranged in sequence along the length direction of the shell. In order to ensure the reliability of the structure, the total length of the shell cannot be shorter than 330mm, which is suitable for conventional blinds on the market. Such blinds are larger in size. When blinds develop towards miniaturization, small blinds are smaller in size, and the travel distance left for the built-in magnetic control handle is shorter, which is not even enough to complete the lifting or flipping of the blinds. There is room for improvement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a built-in magnetic control handle for a hollow blind, which shortens the overall length while ensuring structural reliability, thereby being suitable for small blinds.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a built-in magnetic control handle for a hollow blind, comprising a shell, a magnet mounting groove and two roller grooves are provided on the lower end surface of the shell, the two roller grooves are distributed on the front and rear sides of the magnet mounting groove, and a limiting mechanism for guiding the pull rope and a fixed pulley for cooperating with the pull rope are provided on the upper end surface of the shell, and the pull rope cooperates with the fixed pulley through the limiting mechanism.

[0007] Preferably, the fixed pulley includes a cylinder and a rotating shaft, a through hole is provided in the center of the cylinder, an upper limit ring and a lower limit ring are provided on the side of the cylinder, an anti-slip groove is formed between the lower end face of the upper limit ring, the upper end face of the lower limit ring and the side face of the cylinder, a first axial hole and a mounting bracket are provided on the upper end face of the shell, a second axial hole is provided on the mounting bracket, one end of the rotating shaft is inserted into the first axial hole, and the other end of the rotating shaft passes through the through hole and is inserted into the second axial hole.

[0008] Preferably, the mounting frame includes a mounting plate, the four corners of the mounting plate are fixedly connected to the upper end surface of the shell through support columns, and the second axial hole is arranged at the center position of the mounting plate.

[0009] Preferably, the limiting mechanism includes two first transverse plates arranged on the upper end surface of the shell and extending in the left and right directions, the two first transverse plates are distributed on the front and rear sides of the fixed pulley, and the thickness of the first transverse plates is greater than or equal to the thickness of the lower limiting ring.

[0010] Preferably, the four support columns are respectively recorded as the first support column, the second support column, the third support column and the fourth support column, the first support column and the second support column are located in front of the fixed pulley, the third support column and the fourth support column are located behind the fixed pulley, the two ends of one first horizontal plate are respectively fixedly connected to the first support column and the second support column, and the two ends of another first horizontal plate are respectively fixedly connected to the third support column and the fourth support column.

[0011] Preferably, the limiting mechanism also includes two second transverse plates arranged on the lower end surface of the mounting plate and extending in the left and right directions, the two second transverse plates are distributed on the front and rear sides of the fixed pulley, and the thickness of the second transverse plates is greater than or equal to the thickness of the upper limit ring.

[0012] Preferably, the right side of the shell is recessed to the left to form an iron sheet installation groove, an iron sheet is inserted into the iron sheet installation groove, and the upper end of the magnet installation groove is connected to the lower side of the iron sheet installation groove.

[0013] Preferably, the front and rear side surfaces of the magnet mounting slot are located between the front and rear side surfaces of the iron sheet mounting slot, and the bottom of the iron sheet mounting slot is located between the left and right side surfaces of the magnet mounting slot.

[0014] Compared with the existing technology, the advantage of the present invention is that the fixed pulley is set on the upper end surface of the shell, and the pull rope is guided by the limiting mechanism, so that the pull rope can stably cooperate with the fixed pulley. There is no need to add a mounting structure in the length direction of the shell, shortening the overall length. The total length of the shell can be shortened to 280mm, which is 50mm longer than the conventional structure. When used with small blinds, it can complete the lifting or flipping of the blinds, and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0016] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0017] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0018] Figure 4 The structure of the shell in the present invention is shown as follows Figure 1 ;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 6 The structure of the shell in the present invention is shown as follows Figure 2 .

[0021] In the figure: 1. Shell; 11. Magnet mounting groove; 12. Roller groove; 13. First axial hole; 14. First transverse plate; 15. Iron sheet mounting groove; 2. Fixed pulley; 21. Cylinder; 211. Through hole; 212. Upper limit ring; 213. Lower limit ring; 214. Anti-slip groove; 22. Rotating shaft; 3. Mounting frame; 31. Mounting plate; 311. Second axial hole; 312. Second transverse plate; 32. Support column; 4. Magnet; 5. Roller; 6. Iron sheet. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] Example 1: Figure 1 and Figure 2As shown, a built-in magnetic control handle for a hollow blind includes a shell 1. A magnet mounting groove 11 and two roller grooves 12 are provided on the lower end surface of the shell 1. The two roller grooves 12 are distributed on the front and rear sides of the magnet mounting groove 11. A limiting mechanism for guiding the pull rope and a fixed pulley 2 for cooperating with the pull rope are provided on the upper end surface of the shell 1. The pull rope cooperates with the fixed pulley through the limiting mechanism.

[0024] In this embodiment, a magnet 4 is installed in the magnet installation groove 11 , a roller 5 is rotatably installed in the roller groove 12 , and the lowest part of the roller 5 extends out of the roller groove 12 .

[0025] Taking a conventional built-in magnetic control handle as an example, the parts are arranged in sequence along the length direction of the shell 1. The pulley and the pull rope in the built-in magnetic control handle are basically located on the same plane. The pull rope generally does not separate from the pulley when pulled, and there is no need to set a limiting mechanism to guide the pull rope. However, this technical solution installs the fixed pulley 2 on the upper end face of the shell 1, resulting in the fixed pulley 2 and the pull rope not being on the same plane. A corresponding limiting mechanism is set to guide the pull rope to ensure that the pull rope can stably cooperate with the fixed pulley 2.

[0026] Example 2: Figure 1 、 Figure 3 and Figure 4 As shown, the rest of the parts are the same as those in the first embodiment, except that the fixed pulley 2 includes a cylinder 21 and a rotating shaft 22. A through-hole 211 is provided at the center of the cylinder 21. An upper limit ring 212 and a lower limit ring 213 are provided on the side of the cylinder 21. An anti-slip groove 214 is formed between the lower end surface of the upper limit ring 212, the upper end surface of the lower limit ring 213, and the side surface of the cylinder 21. A first axial hole 13 and a mounting bracket 3 are provided on the upper end surface of the housing 1. The mounting bracket 3 is provided with a second axial hole 311. One end of the rotating shaft 22 is inserted into the first axial hole 13, and the other end of the rotating shaft 22 passes through the through-hole 211 and is inserted into the second axial hole 311. The pull rope extends into the anti-slip groove 214 to cooperate with the fixed pulley 2.

[0027] In this embodiment, the mounting frame 3 includes a mounting plate 31 , the four corners of the mounting plate 31 are fixedly connected to the upper end surface of the housing 1 through support columns 32 , and the second shaft hole 311 is provided at the center of the mounting plate 31 .

[0028] In this embodiment, the limiting mechanism includes two first transverse plates 14 arranged on the upper end surface of the shell 1 and extending in the left and right directions. The two first transverse plates 14 are distributed on the front and rear sides of the fixed pulley 2. The thickness of the first transverse plate 14 is greater than or equal to the thickness of the lower limit ring 213. The pull rope passes through the upper end surface of the first transverse plate 14 and extends into the anti-slip groove 214. The local pull rope is controlled above the lower limit ring 213 through the first transverse plate 14 to prevent the pull rope from slipping from the lower limit ring 213, and the reliability is good.

[0029] Example 3: Figures 3 to 5 As shown, the rest of the parts are the same as those in Example 2, except that the four support columns 32 are respectively recorded as the first support column, the second support column, the third support column and the fourth support column, the first support column and the second support column are located in front of the fixed pulley 2, and the third support column and the fourth support column are located behind the fixed pulley 2, and the two ends of a first cross plate 14 are fixedly connected to the first support column and the second support column respectively, and the three form a U-shaped structure, and the two ends of another first cross plate 14 are fixedly connected to the third support column and the fourth support column respectively, and the three form a U-shaped structure, and the pull rope passes through the two U-shaped structures, which has better stability.

[0030] In this embodiment, the limiting mechanism further includes two second transverse plates 312 disposed on the lower end surface of the mounting plate 31 and extending in the left-right direction. The two second transverse plates 312 are located on the front and rear sides of the fixed pulley 2. The thickness of the second transverse plates 312 is greater than or equal to the thickness of the upper limit ring 212. Like the first transverse plate 14, the second transverse plates 312 prevent the pull rope from slipping off the upper limit ring 212, providing good reliability.

[0031] Preferably, the housing 1 , the first transverse plate 14 , the mounting plate 31 , the support column 32 and the second transverse plate 312 are integrally formed.

[0032] Example 4: Figure 1 、 Figure 2 and Figure 6 As shown, the rest of the parts are the same as those in Example 1, except that the right side of the shell 1 is recessed to the left to form an iron sheet mounting groove 15, in which an iron sheet 6 is inserted, and the upper end of the magnet mounting groove 11 is connected to the lower side of the iron sheet mounting groove 15. When the magnet 4 is installed in the magnet mounting groove 11, it can be adsorbed with the iron sheet 6 located in the iron sheet mounting groove 15, ensuring that the magnet 4 can be stably installed in the magnet mounting groove 11.

[0033] In this embodiment, the front and rear side surfaces of the magnet mounting slot 11 are located between the front and rear side surfaces of the iron sheet mounting slot 15, and the bottom of the iron sheet mounting slot 15 is located between the left and right side surfaces of the magnet mounting slot 11. By setting the iron sheet mounting slot 15 and the magnet mounting slot 11 with specific structures, there is a misalignment at the connection between the iron sheet mounting slot 15 and the magnet mounting slot 11, there are two supporting surfaces on the lower side surface of the iron sheet mounting slot 15, and there is also a supporting surface on the bottom surface of the magnet mounting slot 11. When the iron sheet 6 is inserted into the iron sheet mounting slot 15, the iron sheet 6 will not fall into the magnet mounting slot 11. When the magnet 4 is inserted into the magnet mounting slot 11, the magnet 4 will not extend into the iron sheet mounting slot 15. That is, no interference will occur when the magnet 4 and the iron sheet 6 are installed.

Claims

1. A built-in magnetic control handle for a hollow blind, comprising a housing, wherein a magnet mounting groove and two roller grooves are provided on the lower end surface of the housing, wherein the two roller grooves are distributed on the front and rear sides of the magnet mounting groove, characterized in that The upper end surface of the housing is provided with a limiting mechanism for guiding the pull rope and a fixed pulley for cooperating with the pull rope, and the pull rope cooperates with the fixed pulley through the limiting mechanism; The fixed pulley includes a cylinder and a rotating shaft, the center of the cylinder is provided with a through hole, an upper limit ring and a lower limit ring are provided on the side surface of the cylinder, an anti-slip groove is formed between the lower end surface of the upper limit ring, the upper end surface of the lower limit ring and the side surface of the cylinder, a first shaft hole and a mounting bracket are provided on the upper end surface of the shell, a second shaft hole is provided on the mounting bracket, one end of the rotating shaft is inserted into the first shaft hole, and the other end of the rotating shaft passes through the through hole and is inserted into the second shaft hole; The mounting frame includes a mounting plate, the four corners of which are fixedly connected to the upper end surface of the housing through support columns, and the second axial hole is provided at the center of the mounting plate; The limiting mechanism includes two first transverse plates arranged on the upper end surface of the shell and extending in the left and right directions. The two first transverse plates are distributed on the front and rear sides of the fixed pulley. The thickness of the first transverse plates is greater than or equal to the thickness of the lower limiting ring.

2. The built-in magnetic control handle of a hollow blind according to claim 1, characterized in that The four support columns are respectively recorded as the first support column, the second support column, the third support column and the fourth support column. The first support column and the second support column are located in front of the fixed pulley, and the third support column and the fourth support column are located behind the fixed pulley. The two ends of one first cross plate are respectively fixedly connected to the first support column and the second support column, and the two ends of another first cross plate are respectively fixedly connected to the third support column and the fourth support column.

3. The built-in magnetic control handle of a hollow blind according to claim 1, characterized in that The limiting mechanism also includes two second transverse plates arranged on the lower end surface of the mounting plate and extending in the left and right directions. The two second transverse plates are distributed on the front and rear sides of the fixed pulley, and the thickness of the second transverse plates is greater than or equal to the thickness of the upper limit ring.

4. The built-in magnetic control handle of a hollow blind according to claim 1, characterized in that The right side of the shell is recessed to the left to form an iron sheet installation groove, in which an iron sheet is inserted, and the upper end of the magnet installation groove is connected to the lower side of the iron sheet installation groove.

5. The built-in magnetic control handle of a hollow blind according to claim 4, characterized in that The front and rear side surfaces of the magnet mounting slot are located between the front and rear side surfaces of the iron sheet mounting slot, and the bottom of the iron sheet mounting slot is located between the left and right side surfaces of the magnet mounting slot.

Images