A head assembly for an indoor roller blind having a housing

Abstract

This utility model provides an indoor roller blind head assembly with a receiving cavity, belonging to the field of roller blind accessories. It includes a head structure or a tail structure, which includes a sleeve inserted into the roller blind shaft. The sleeve has a receiving cavity for storing the roller blind edging on the side away from the roller blind shaft. The width of the receiving cavity is adapted to the width of the curtain edging, and the depth of the receiving cavity is adapted to the thickness of the roller blind edging. This allows the bulges formed by the edging accumulation when the curtain is rolled up to be stored in the receiving cavity, avoiding the formation of a shape with protruding ends. This not only improves the aesthetics of the roller blind but also avoids jamming or squeezing caused by the bulges, thus improving the user experience and service life of the roller blind.

Description

Technical Field

[0001] This utility model belongs to the field of roller blind accessories, and in particular relates to an indoor roller blind head assembly with a receiving cavity. Background Technology

[0002] The head control assembly of an indoor roller blind is the core driving component of the roller blind system. It usually consists of a head control structure alone or a head control structure and a tail control structure. It is mainly used to connect the roller blind shaft and the installation structure to realize the adjustment of the curtain fabric. From the perspective of structural classification, the head control assembly can be divided into two main categories: manual (such as beaded type and pull-free type by directly pulling the fabric) and electric.

[0003] Existing blind roller shutter control assemblies generally suffer from insufficient adaptability to the edge binding treatment of the curtain fabric. For example, the utility model patent with publication number CN201747245U provides a heavy-duty beaded roller shutter control head with a front-built torsion spring planetary gear. The spatial layout of the tube sleeve of this roller shutter control head is centered on the smooth roller shutter shaft, without considering the edge protrusion structure formed by the curtain fabric edge binding. When the roller shutter is rolled up, the edge protrusions gradually accumulate, causing irregular bulges to form at both ends of the roller shutter. These irregular bulges can interfere with the inner wall of the control head housing or the limiting cover. This not only destroys the overall flatness and aesthetics of the roller shutter, but also reduces the utilization rate of storage space due to the protrusions squeezing the limiting structure (such as the sleeve or fixing plate), and may even cause structural deformation or transmission jamming, affecting the user experience and service life. Summary of the Invention

[0004] Based on the aforementioned problems in the existing technology, this utility model provides an indoor roller blind head assembly with a receiving cavity, including a head structure or a tail structure. The head structure or tail structure includes a sleeve inserted into the roller blind shaft. The sleeve has a receiving cavity on the side away from the roller blind shaft for receiving the roller blind edge. The receiving cavity receives the irregular bulges formed when the roller blind is rolled up, reducing or even avoiding problems caused by the irregular bulges.

[0005] The sleeve has an extension tube on the side away from the roller blind shaft. The diameter of the extension tube is smaller than the diameter of the roller blind shaft to form the receiving cavity. The length of the extension tube matches the width of the roller blind edging.

[0006] The outer surface of the sleeve is provided with nested protrusions, which are fitted to the inner wall of the roller shutter shaft; a snap-fit ​​groove is formed between the nested protrusions on the outer surface of the sleeve.

[0007] The nested protrusion gradually decreases in height at the end furthest from the receiving cavity to form an insertion guide.

[0008] A limiting ring is provided between the sleeve and the receiving cavity to limit the depth of the sleeve insertion into the roller shutter shaft.

[0009] The sleeve is also provided with a limiting groove to restrict the rotation of the sleeve relative to the end cap, roller shutter shaft or power output structure.

[0010] The sleeve is also fixedly provided with a manual rotating ring for hand gripping and rotating the sleeve, and a torsion spring fixing block is provided at one end of the sleeve near the roller shutter shaft.

[0011] Preferably, the indoor roller blind head assembly with a receiving cavity includes a head structure and a tail structure. The tail structure includes a central column and a sleeve. A retaining ring is fixedly provided on the inner wall of the sleeve. An elastic hook that engages and is fixed to the retaining ring is provided on the outer surface of the central column. The central column is installed into the sleeve through the engagement of the elastic hook and the retaining ring. A first synchronous limiting block is provided at the end of the central column near the roller blind shaft, and a first toothed groove is provided at the end of the central column away from the roller blind shaft to limit the rotation of the central column. The head structure and the tail structure are respectively installed at both ends of the roller blind shaft.

[0012] The head-controlling structure includes a fixed sleeve, a transmission sleeve, a bead chain groove, and a tube sleeve. A second synchronous limiting block is provided at the end of the fixed sleeve near the roller blind shaft, and a second toothed groove is provided at the end of the fixed sleeve away from the roller blind shaft to limit the rotation of the fixed sleeve. The transmission sleeve is rotatably fitted outside the fixed sleeve and includes a mounting plate with a transmission ridge on one side. The tube sleeve is rotatably fitted outside the transmission sleeve, and a transmission groove matching the transmission ridge is provided on the inner surface of the tube sleeve. The transmission ridge is located within the transmission groove, and the rotation of the transmission sleeve is achieved by the transmission ridge contacting the inner wall of the transmission groove, thereby driving the tube sleeve to rotate. The bead chain groove is rotatably fitted outside the mounting plate, and several planetary pinions are rotatably mounted on the mounting plate. A sun gear is provided on the outer side of the fixed sleeve corresponding to the planetary pinions, and a gear ring is provided on the inner side of the bead chain groove corresponding to the planetary pinions. The rotation of the bead chain groove drives the transmission sleeve to rotate through the planetary pinions.

[0013] The indoor roller blind head assembly with a receiving cavity further includes a blocking ring, which is sleeved on the outside of the mounting plate and blocks the bead chain groove on the side facing the roller blind shaft; the fixing sleeve extends radially on the side away from the roller blind shaft to form a blocking part, which blocks the bead chain groove on the side away from the roller blind shaft; guide grooves are provided on one or both sides of the bead chain groove, and the guide grooves and bead chain grooves are coaxially arranged; the mounting plate or the blocking part, or the mounting plate and the blocking part, are provided with guide protrusions that fit and slide with the corresponding guide grooves.

[0014] The beneficial effects of this utility model are as follows: A receiving cavity surrounding the tube sleeve is provided on the side of the head or tail structure away from the roller blind shaft. The width of the receiving cavity is adapted to the width of the curtain edge, and the depth of the receiving cavity is adapted to the thickness of the roller blind edge. This allows the bulges formed by the accumulation of the edge when the curtain is rolled up to be contained in the receiving cavity, avoiding the formation of a shape with protruding ends. This not only improves the aesthetics of the roller blind but also avoids jamming or squeezing caused by the bulges, thus improving the user experience and service life of the roller blind. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the roller shutter head assembly in Embodiment 1.

[0016] Figure 2 This is a three-dimensional structural diagram of the roller shutter head assembly from another angle in Embodiment 1.

[0017] Figure 3 This is a three-dimensional structural diagram of the roller shutter head assembly in Embodiment 2.

[0018] Figure 4 This is a three-dimensional structural diagram of the roller shutter head assembly from another angle in Embodiment 2.

[0019] Figure 5 This is a three-dimensional structural diagram of the head-making structure of the roller shutter head-making assembly in Embodiment 3.

[0020] Figure 6 This is a three-dimensional structural diagram of the head-making structure of the roller shutter head-making assembly in Embodiment 3 from another angle.

[0021] Figure 7 This is a three-dimensional structural diagram of the tail-end structure of the roller shutter head assembly in Embodiment 3.

[0022] Figure 8 This is a three-dimensional structural diagram of the central column of the roller shutter head assembly in Embodiment 3.

[0023] Figure 9 This is a cross-sectional view of the tail-end structure of the roller shutter head assembly in Embodiment 3.

[0024] Figure 10 This is a cross-sectional schematic diagram of the head-making structure of the roller shutter head-making assembly in Embodiment 3.

[0025] Figure 11 This is an exploded view of the fit between the sleeve and the transmission sleeve of the roller shutter head assembly in Embodiment 3.

[0026] Figure 12 This is a schematic diagram showing the engagement of the bead chain groove, transmission sleeve, and planetary pinion of the roller blind head assembly in Embodiment 3.

[0027] Figure 13 This is a schematic diagram showing the fit of the bead chain groove, transmission sleeve, planetary pinion, and fixing sleeve of the roller blind head assembly in Embodiment 3. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Example 1: An electric control assembly for an indoor roller blind with a receiving cavity 4.

[0030] As attached Figure 1 and 2 The illustration shows an indoor roller blind head assembly with a receiving cavity 4, including a head structure 1. In this embodiment, the head structure 1 is also a tail structure. Two identical head structures 1 are respectively installed at both ends of the roller blind shaft. The head structure 1 includes a sleeve 2 inserted into the roller blind shaft. An extension tube 3 is provided on the side of the sleeve 2 away from the roller blind shaft. The diameter of the extension tube 3 is smaller than the diameter of the roller blind shaft to form a receiving cavity 4 for receiving the roller blind edging. The length of the extension tube 3 matches the width of the roller blind edging. The outer surface of the sleeve 2 is provided with four nested protrusions 5. The cross-section of the nested protrusions 5 is close to trapezoidal and has a cavity in the middle. The four nested protrusions 5 are evenly arranged circumferentially along the axis of the sleeve 2. The two adjacent nested protrusions 5 are spaced 90° apart. The nested protrusions 5 and the inner wall of the roller blind shaft are fitted together. The outer surface of the sleeve 2 is provided with four nested protrusions 5. A snap-fit ​​groove 6 is formed between the starting parts 5. The inner wall of the roller blind shaft is provided with a snap-fit ​​protrusion that matches the snap-fit ​​groove 6, so that the rotation of the sleeve 2 can drive the roller blind shaft to rotate synchronously. The height of the nested protrusion 5 gradually decreases at the end away from the receiving cavity 4 to form an insertion guide part 7. A limiting ring 8 is provided between the sleeve 2 and the receiving cavity 4 to limit the depth of the sleeve 2 inserted into the roller blind shaft, so as to prevent the entire head structure 1 from being inserted into the roller blind shaft. The inner wall of the sleeve 2 is also provided with a limiting groove 9 to limit the rotation of the sleeve 2 relative to the power output structure. The power output structure is the power output shaft of the motor. A limiting rod is provided on the power output shaft of the motor that extends into the limiting groove 9. The power output shaft of the motor drives the sleeve 2 to rotate through the cooperation of the limiting rod and the limiting groove 9, thereby driving the entire roller blind shaft to rotate and realize the raising and lowering of the curtain.

[0031] Because a receiving cavity 4 is formed at the extension tube 3, the bulge formed by the edge of the curtain when it is rolled up will naturally extend into the receiving cavity 4, reducing the height of the bulge. When the bulge of the curtain touches the outer shell of the roller blind, the bulge is pressed into the receiving cavity 4 for storage. This reduces the space reserved for the bulge in the outer shell, making the outer shell more slender, improving aesthetics and space utilization. It also prevents irregular bulges from squeezing the outer shell or other parts, causing structural deformation and affecting the service life of the roller blind.

[0032] Example 2: An indoor roller blind assembly with a receiving cavity 4 and no pull head.

[0033] The difference between this embodiment and Embodiment 1 lies in the slightly different structure of the sleeve 2, as shown in the attached figure. Figure 3 and 4 As shown, at the end of the sleeve 2 furthest from the roller blind shaft, i.e., at the end of the extension tube 3 furthest from the roller blind shaft, a manual rotating ring 10 is fixedly provided for hand-gripping and rotating the sleeve 2. The circumference of the manual rotating ring 10 is provided with concave and convex anti-slip textures, which not only facilitates manual rotation but also enhances the design aesthetics of the roller blind. The limiting groove 9 is provided on the side of the manual rotating ring 10, and the limiting groove 9 is used to install the end cap and limit the relative rotation of the end cap and the sleeve 2, or to rotate and install it on the mounting bracket and fix it to the wall through the mounting bracket. The nested protrusion 5 on the sleeve 2 is a sheet-like nested protrusion 5, and the inclination of the insertion guide 7 is relatively large. A torsion spring fixing block 11 is provided at the end of the sleeve 2 near the roller blind shaft. The side of the manual rotating ring 10 is also provided with an operating cavity that connects to the torsion spring fixing block 11. The torsion spring fixing block 11 can be installed with bolts through the operating cavity, and a synchronous rod is connected through the torsion spring fixing block 11. The synchronous rod is used to realize the synchronous rotation of the head structure 1 at both ends of the roller blind shaft. Alternatively, a torsion spring can be installed inside the sleeve 2 using the torsion spring fixing block 11 to achieve automatic pull-back of the head assembly. The related structures of the synchronizing rod or torsion spring are existing technologies and will not be described in detail.

[0034] The roller blind using the head assembly disclosed in this embodiment is a manual roller blind. The roller blind is opened by manually pulling the curtain and automatically pulled back by the action of a torsion spring. Similarly, the bulge formed by the curtain edge can be stored through the receiving cavity 4.

[0035] Example 3: A manual bead chain head assembly for an indoor roller blind with a receiving cavity 4.

[0036] The difference between this embodiment and Embodiment 1 lies in the specific structure of the sleeve 2, which is respectively provided with a head-making structure 1 and a tail-making structure 12, as shown in the attached figure. Figure 5-13As shown, the head-controlling assembly includes a head-controlling structure 1 and a tail-controlling structure 12, which are respectively installed at both ends of the roller blind shaft. The tail-controlling structure 12 includes a central column 13 and a sleeve 2. A retaining ring 14 is fixedly provided on the inner wall of the sleeve 2. Two elastic hooks 15 are provided on the outer surface of the central column 13, which are engaged and fixed with the retaining ring 14. The two elastic hooks 15 are symmetrically arranged and can undergo elastic deformation in the axial direction. The central column 13 is detachably installed into the sleeve 2 through the cooperation of the two elastic hooks 15 and the retaining ring 14. A first synchronous limiting block 16 is provided at the end of the central column 13 near the roller blind shaft, and a first toothed groove 17 is provided at the end of the central column 13 away from the roller blind shaft to limit the rotation of the central column 13. The head-controlling structure 1 includes a fixed sleeve 18, a transmission sleeve 19, a beaded chain groove 20, and a tube sleeve 2. A second synchronous limiting block 21 is provided at the end of the fixed sleeve 18 near the roller blind shaft, and a second toothed groove 22 is provided at the end of the fixed sleeve 18 away from the roller blind shaft to limit the rotation of the fixed sleeve 18. The first synchronous limiting block 16 and the second synchronous limiting block 21 can be connected by a synchronous rod to achieve synchronous rotation of the head-controlling structure 1 and the tail-controlling structure 12. The related structure of the synchronous rod also adopts existing technology, so it will not be described in detail. The transmission sleeve 19 is rotatably fitted outside the fixed sleeve 18. The transmission sleeve 19 includes a mounting plate 23, and two axially extending transmission ribs 24 are provided on one side of the mounting plate 23. The tube sleeve 2 is rotatably fitted outside the transmission sleeve 19, and the inner surface of the tube sleeve 2 is provided with two ribs that match the transmission ribs 24 one-to-one. The transmission groove 25 has two transmission ridges 24 located within it. The rotation of the transmission sleeve 19 causes the sleeve 2 to rotate by touching the inner wall of the transmission groove 25 through the transmission ridges 24. The bead chain groove 20 is rotatably fitted outside the mounting plate 23. The bead chain groove 20 is used to install bead chains. Pulling the bead chain causes the bead chain groove 20 to rotate. Six planetary pinions 26 are rotatably mounted on the mounting plate 23. The six planetary pinions 26 are arranged in a circle with equal intervals on the mounting plate 23. A sun gear 27 is provided on the outer side of the fixed sleeve 18 corresponding to the planetary pinions 26. A gear ring 28 is provided on the inner side of the bead chain groove 20 corresponding to the planetary pinions 26. The two sides of the planetary pinions 26 are respectively meshed with the sun gear 27 and the gear ring 28. The rotation of the bead chain groove 20 causes the transmission sleeve 19 to rotate through the planetary pinions 26. A shielding ring 29 is also fitted over the mounting plate 23, and the shielding ring 29 shields the side of the bead chain groove 20 that is close to the roller blind shaft; the fixing sleeve 18 extends radially on the side away from the roller blind shaft to form a shielding part 30, and the shielding part 30 shields the side of the bead chain groove 20 that is away from the roller blind shaft; guide grooves are provided on both sides of the bead chain groove 20, and the guide grooves and the bead chain groove 20 are coaxially arranged. The mounting plate 23 and the shielding part 30 are provided with guide protrusions 31 that are fitted and slidably engaged with the corresponding guide grooves. The bead chain groove 20 is limited and guided by the cooperation of the guide protrusions 31 and the guide grooves, thereby improving the rotational stability of the bead chain groove 20.

[0037] The head assembly disclosed in this embodiment achieves the raising and lowering of the curtain by pulling the bead chain. The movement of the bead chain drives the rotation of the bead chain groove 20. The bead chain groove 20 transmits power to the transmission sleeve 19 through the planetary gear structure, driving the transmission sleeve 19 to rotate. The transmission sleeve 19 then drives the tube sleeve 2 and the roller blind shaft to rotate, thereby realizing the raising and lowering of the curtain. In this embodiment, the bulge formed by the curtain edge can also be accommodated through the receiving cavity 4.

[0038] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An indoor roller blind head assembly with a receiving cavity (4), comprising a head structure (1) or a tail structure (12), wherein the head structure (1) or the tail structure (12) includes a sleeve (2) inserted into the roller blind shaft, characterized in that, The sleeve (2) has a receiving cavity (4) for storing the edge of the roller blind on the side away from the roller blind shaft.

2. The indoor roller blind head assembly with a receiving cavity (4) according to claim 1, characterized in that, The sleeve (2) has an extension tube (3) on the side away from the roller blind shaft. The diameter of the extension tube (3) is smaller than the diameter of the roller blind shaft to form the receiving cavity (4). The length of the extension tube (3) matches the width of the roller blind edging.

3. The indoor roller blind head assembly with a receiving cavity (4) according to claim 1, characterized in that, The outer surface of the sleeve (2) is provided with a nested protrusion (5), the nested protrusion (5) and the inner wall of the roller shutter shaft are overfitted, and the outer surface of the sleeve (2) forms a snap-fit ​​groove (6) between the nested protrusions (5).

4. The indoor roller blind head assembly with a receiving cavity (4) according to claim 3, characterized in that, The height of the nested protrusion (5) gradually decreases at the end away from the receiving cavity (4) to form an insertion guide (7).

5. The indoor roller blind head assembly with a receiving cavity (4) according to claim 1, characterized in that, A limiting ring (8) is provided between the sleeve (2) and the receiving cavity (4) to limit the depth of the sleeve (2) inserted into the roller shutter shaft.

6. The indoor roller blind head assembly with a receiving cavity (4) according to claim 1, characterized in that, The sleeve (2) is also provided with a limiting groove (9) to restrict the rotation of the sleeve (2) relative to the end cover, roller shutter shaft or power output structure.

7. An indoor roller blind head assembly with a receiving cavity (4) according to any one of claims 1-6, characterized in that, The sleeve (2) is also fixedly provided with a manual rotating ring (10) for hand gripping and rotating the sleeve (2), and a torsion spring fixing block (11) is provided at one end of the sleeve (2) near the roller shutter shaft.

8. An indoor roller blind head assembly with a receiving cavity (4) according to any one of claims 1-5, characterized in that, It includes a head control structure (1) and a tail control structure (12). The tail control structure (12) includes a central column (13) and a sleeve (2). A retaining ring (14) is fixedly provided on the inner wall of the sleeve (2). An elastic hook (15) is provided on the outer surface of the central column (13) and is engaged and fixed with the retaining ring (14). The central column (13) is installed into the sleeve (2) through the engagement of the elastic hook (15) and the retaining ring (14). A first synchronous limiting block (16) is provided at the end of the central column (13) near the roller blind shaft. A first toothed groove (17) is provided at the end of the central column (13) away from the roller blind shaft to limit the rotation of the central column (13). The head control structure (1) and the tail control structure (12) are respectively installed at both ends of the roller blind shaft.

9. An indoor roller blind head assembly with a receiving cavity (4) according to claim 8, characterized in that, The head-making structure (1) includes a fixed sleeve (18), a transmission sleeve (19), a bead chain groove (20), and a tube sleeve (2). The fixed sleeve (18) has a second synchronous limiting block (21) at one end near the roller blind shaft, and a second toothed groove (22) at the other end away from the roller blind shaft to limit the rotation of the fixed sleeve (18). The transmission sleeve (19) is rotatably fitted outside the fixed sleeve (18), and includes a mounting plate (23). A transmission ridge (24) is provided on one side of the mounting plate (23). The tube sleeve (2) is rotatably fitted outside the transmission sleeve (19), and the inner surface of the tube sleeve (2) is provided with a groove that matches the transmission ridge (24). The transmission groove (25) has a transmission ridge (24) located inside the transmission groove (25), and the rotation of the transmission sleeve (19) is caused by the transmission ridge (24) touching the inner wall of the transmission groove (25) to drive the sleeve (2) to rotate; the bead chain groove (20) is rotated and sleeved outside the mounting plate (23), and several planetary pinions (26) are rotated on the mounting plate (23). The outer side of the fixed sleeve (18) and the planetary pinions (26) are provided with sun gears (27), and the inner side of the bead chain groove (20) and the planetary pinions (26) are provided with gear rings (28). The rotation of the bead chain groove (20) drives the transmission sleeve (19) to rotate through the planetary pinions (26).

10. An indoor roller blind head assembly with a receiving cavity (4) according to claim 9, characterized in that, It also includes a shielding ring (29), which is sleeved on the outside of the mounting plate (23) and shields the bead chain groove (20) on the side of the roller blind shaft; the fixing sleeve (18) extends radially on the side away from the roller blind shaft to form a shielding part (30), which shields the side of the bead chain groove (20) away from the roller blind shaft; a guide groove is provided on one or both sides of the bead chain groove (20), and the guide groove and the bead chain groove (20) are coaxially arranged. The mounting plate (23) or the shielding part (30), or the mounting plate (23) and the shielding part (30) are provided with guide protrusions (31) that fit and slide with the corresponding guide groove.

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