Spring roller shutter head

Abstract

The utility model relates to the field of window decoration products, in particular to a spring roller shutter head. Comprising two bases, a transmission mechanism and a driving unit. The problems that although the roller shutter can achieve the effect of semi-automatic ascending and descending, installation procedures are tedious, it is difficult to accurately and rapidly insert a spring into a roller shutter barrel, the spring is too long, the effect can be achieved without a too long spring in use, resources are consumed, and cost is higher when the roller shutter is used are solved. When the pull bead is pulled downwards to control the roller shutter to fall, the volute spring can store force, and when the pull bead on one side used for controlling the roller shutter to ascend is pulled downwards, the elastic force stored by the volute spring drives the rotating shaft, the control sleeve and the roller shutter cylinder to integrally rotate reversely so as to control the roller shutter to ascend automatically.

Description

Technical Field

[0001] The utility model relates to the field of window decoration products, in particular to a spring roller blind head. Background Art

[0002] A spring roller shutter brake is a device used to control the raising and lowering of roller shutters. It stores energy through a device with a spring and helps the roller shutter to rise automatically, thereby simplifying the operation process and reducing the steps required to manually raise the roller shutter.

[0003] Existing spring roller shutter heads usually have some problems, such as complex structure and inconvenient installation. Based on this, personnel in the relevant technical fields have carried out a lot of optimization on the spring roller shutter heads. Among them, the Chinese patent with publication number: CN104675310A discloses a motor pull-bead spring roller shutter system, including a head, a tail plug, a limiter, a gear speed regulator, a spring kit and a drum. The head and the tail plug are respectively arranged at the two ends of the drum. The drum has a built-in limiter, a gear speed regulator and a spring kit. The head, the limiter and the gear speed regulator are connected end to end in sequence, and the tail plug is connected to the spring kit.

[0004] The above-mentioned existing technology can not only realize the convenient operation mode of manually pulling the bead roller shutter system, but also realize the automatic winding function of the spring roller shutter system, eliminating the phenomenon that the bead is too heavy to be pulled when rolling up or the pull rope is too high to be difficult to pull when lowering, and can achieve a good inching stop effect.

[0005] However, the above prior art has the following shortcomings:

[0006] Although the above-mentioned prior art can realize the automatic raising of the roller blind, the spring kit provided therein is long and difficult to insert into the roller accurately and quickly. In addition, the spring kit needs to be used in conjunction with a limiter, which makes the installation procedure more complicated and requires high production costs.

[0007] Therefore, under the viewpoint of the above statement, the existing roller blind head still has room for improvement. Utility Model Content

[0008] In order to solve the above problems, the utility model provides a spring roller shutter control head, comprising two bases, a fixed bracket is provided on the base, and two fixing slots are opened on the fixed bracket. A rotating shaft is rotatably provided on one side of one base close to the other base, and a control sleeve is sleeved on the outer wall of the rotating shaft. A tail plug opposite to the control sleeve is installed on the other base, and the control sleeve and the tail plug are respectively passed through the two ends of the roller shutter cylinder. A driving unit is provided on the base on which the rotating shaft is installed, and the driving unit includes a turntable rotatably provided on the side wall of the base and sleeved on the outer wall of the rotating shaft, and the control sleeve is connected to the turntable.

[0009] Preferably, the driving unit includes a plurality of slots uniformly arranged on the turntable in a circumferential direction, and the outer wall of the turntable is provided with a plurality of protruding teeth arranged in an alternating manner with the slots.

[0010] Preferably, a mounting groove for accommodating a turntable is provided on the base on which the rotating shaft is installed, and a plurality of pull beads that abut against the groove are provided between the turntable and the mounting groove, and the plurality of pull beads are connected by a traction rope.

[0011] Preferably, a circular cavity is provided inside the base on which the rotating shaft is installed, a volute spring is provided in the circular cavity, one inner end of the volute spring is connected to the rotating shaft, and an inner ring is provided on the outer wall of the volute spring and is rotatably installed on the inner wall of the circular cavity.

[0012] Preferably, a plurality of limit blocks corresponding to the positions of the notches are evenly arranged on the outer wall of the inner ring, and a groove is provided on the side of the limit block away from the inner ring.

[0013] Preferably, a plurality of control plates corresponding to the positions of the limit blocks are hinged to the inner wall of the installation groove through a torsion spring, and an insertion rod is hinged to one side of the control plate close to the inner ring, and the insertion rod slides through the base and abuts against the groove.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. The utility model can store force on the volute spring when the pull bead is pulled down to control the rolling curtain to fall, and limit the volute spring under the action of the control plate and the insertion rod. When the pull bead on one side of the rolling curtain to rise is pulled down, the control plate drives the insertion rod to release the fixing effect on the volute spring, so that the elastic force stored in the volute spring drives the rotating shaft, the control sleeve and the rolling curtain cylinder to rotate in the opposite direction as a whole, so as to control the automatic rise of the rolling curtain.

[0016] 2. The utility model can replace the traditional spring that needs to be inserted into the roller shutter cylinder through the spiral spring, which is not only easy to install and maintain, but also can reduce the cost of the roller shutter head and can eliminate the use of the limiter, further reducing costs.

[0017] 3. The utility model achieves the result through the cooperation between parts, reduces direct friction with the outside and increases the service life of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a schematic diagram of the structure between the rotating shaft and the turntable of the utility model.

[0021] Figure 3It is a schematic diagram of the internal structure of the base of the utility model.

[0022] Figure 4 This utility model Figure 3 A partial enlarged view of point A.

[0023] In the figure, 1. base; 2. fixed bracket; 21. fixed groove; 3. rotating shaft; 4. control sleeve; 5. tail plug; 6. turntable; 7. notch; 8. convex tooth; 9. mounting groove; 10. pull bead; 11. traction rope; 12. inner ring; 121. limit block; 122. groove; 13. control board; 14. plug rod; 15. spiral spring. DETAILED DESCRIPTION

[0024] The following is combined with Figures 1-4 The embodiments of the present utility model are described in detail.

[0025] The embodiment of the present application discloses a spring roller shutter control head, which explains that the spring roller shutter control head is mainly used in the process of automatic recovery of the roller shutter after it falls. In terms of technical effect, it can store force in the spiral spring 15 when the roller shutter falls, and limit and fix the spiral spring 15 to ensure that the roller shutter will not recover at will; further, when controlling the recovery of the roller shutter, the elastic force of the spiral spring 15 can be used to control the automatic recovery of the roller shutter without the need for complete manual operation.

[0026] Example 1:

[0027] Reference Figure 1 As shown, a spring roller shutter control head includes two bases 1, a fixed bracket 2 is provided on the base 1, and two fixing slots 21 are provided on the fixed bracket 2. A rotating shaft 3 is rotatably provided on one side of one base 1 close to the other base 1, and a control sleeve 4 is sleeved on the outer wall of the rotating shaft 3. A tail plug 5 opposite to the control sleeve 4 is installed on the other base 1. The control sleeve 4 and the tail plug 5 are respectively passed through the two ends of the roller shutter cylinder. A driving unit is provided on the base 1 on which the rotating shaft 3 is installed. The driving unit includes a turntable 6 rotatably provided on the side wall of the base 1 and sleeved on the outer wall of the rotating shaft 3. The control sleeve 4 is connected to the turntable 6.

[0028] In actual application, first place the two bases 1 opposite to each other, then use expansion bolts to cooperate with the fixing grooves 21 to respectively install the two fixing brackets 2 on both sides of the inner top wall of the window, so that the control sleeve 4 and the tail plug 5 are on the same axis, and then the two ends of the rolling shutter drum are respectively sleeved on the control sleeve 4 and the tail plug 5, so that the rolling shutter drum and the rolling shutter on its outer wall are in a horizontal state; by controlling the rotation of the turntable 6 in the drive unit to drive the rotating shaft 3, the control sleeve 4 and the rolling shutter drum to rotate synchronously, thereby controlling the lifting and lowering of the rolling shutter.

[0029] Reference Figure 2As shown, the drive unit includes a plurality of slots 7 uniformly arranged on the turntable 6 in the circumferential direction, and the outer wall of the turntable 6 is provided with a plurality of protruding teeth 8 arranged alternately with the slots 7; a mounting slot 9 for accommodating the turntable 6 is provided on the base 1 on which the rotating shaft 3 is installed, and a plurality of pull beads 10 are provided between the turntable 6 and the mounting slot 9, which are in contact with the slots 7, and the plurality of pull beads 10 are connected by a traction rope 11.

[0030] During specific operation, the bead 10 passes through the annular gap between the mounting groove 9 and the turntable 6, and the bead 10 is engaged with the bottom of the mounting groove 9 and then passes downward to the outside. In addition, multiple beads 10 are respectively in contact with the slot 7. When the bead 10 is pulled by the traction rope 11, the bead 10 drives the turntable 6, the rotating shaft 3, the control sleeve 4 and the rolling roller to rotate as a whole through the mutual cooperation between the slot 7 and the protruding tooth 8 to complete the lifting and lowering of the rolling curtain. During this period, the turntable 6 can be limited by the engaging relationship between the bead 10 and the mounting groove 9 to prevent it from rotating at will and affecting the normal use of the rolling curtain.

[0031] Reference Figure 3 and Figure 4 As shown, a circular cavity is provided inside the base 1 on which the rotating shaft 3 is installed, and a spiral spring 15 is provided in the circular cavity. One end of the inner side of the spiral spring 15 is connected to the rotating shaft 3, and the outer wall of the spiral spring 15 is provided with an inner ring 12 rotatably installed on the inner wall of the circular cavity; the outer wall of the inner ring 12 is evenly provided with a plurality of limit blocks 121 corresponding to the position of the notch 7, and a groove 122 is provided on the side of the limit block 121 away from the inner ring 12; the inner wall of the installation groove 9 is hinged with a plurality of control plates 13 corresponding to the position of the limit blocks 121 through a torsion spring, and the control plate 13 is hinged with an insertion rod 14 on the side close to the inner ring 12, and the insertion rod 14 slides through the base 1 and abuts against the groove 122.

[0032] It should be noted that, by setting the spiral spring 15, the control plate 13 is always kept retracted to the side close to the inner ring 12, and at this time the control plate 13 is in an inclined state (at Figure 4 shown in ).

[0033] During specific operation, when the traction rope 11 is pulled to cooperate with the bead 10 to drive the turntable 6 to rotate to release the roller blind, the bead 10 slides and conflicts with the control board 13, and the moving direction of the bead 10 is the same as the tilt direction of the control board 13. In this way, the bead 10 squeezes the insertion rod 14 into the groove 122 through the control board 13, thereby limiting and fixing the inner ring 12; and when the turntable 6 rotates, it drives the rotating shaft 3 to rotate synchronously, so the rotating shaft 3 and the inner ring 12 are in relative rotation, so that the spiral spring 15 contracts and stores elastic force.

[0034] When another traction rope 11 is pulled to control the roller shutter to rise, the traction rope 11 drives the pull bead 10 to move in the opposite direction in the installation groove 9, so that the pull bead 10 rests on the angle between the control board 13 and the inner wall of the installation groove 9, and props up the control board 13 outward, so that the control board 13 drives the insertion rod 14 to be pulled out of the groove 122. At this time, the spiral spring 15 is reset and controls the rotating shaft 3 and the turntable 6 to rotate in the opposite direction through its stored elastic force, thereby realizing the rapid and automatic rising of the roller shutter without manual operation.

[0035] During operation: Step 1: Place the two bases 1 opposite to each other, use the two fixing slots 21 on the fixing bracket 2 to fix it to the wall with expansion bolts, fix the roller shutter barrel between the tail plug 5 and the control sleeve 4, ensure that the two bases 1 are at the same height, and the rotation of the turntable 6 drives the control sleeve 4 to rotate in the same direction.

[0036] Step 2: Pull the bead 10, which drives the control sleeve 4 and the roller shutter drum to rotate as a whole through the turntable 6, so that the roller shutter drum lowers the roller shutter, thereby realizing the falling of the roller shutter.

[0037] Step 3: Gently pull the bead 10 at the other end, the bead 10 pushes up the control board 13, the insertion rod 14 is pulled out, and the fixing effect on the groove 122 is lost, and the spiral spring 15 is loosened. At this time, the spiral spring 15 is reset and controls the rotating shaft 3 and the turntable 6 to rotate in the opposite direction through its stored elastic force, so that the roller blind rises quickly, achieving the purpose of recovery.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A spring roller shutter head, comprising two bases (1), a fixing bracket (2) provided on the base (1), two fixing slots (21) provided on the fixing bracket (2), a rotating shaft (3) rotatably provided on a side of one base (1) close to the other base (1), a control sleeve (4) being sleeved on the outer wall of the rotating shaft (3), a tail plug (5) opposite to the control sleeve (4) being installed on the other base (1), the control sleeve (4) and the tail plug (5) being respectively provided at both ends of the roller shutter cylinder, characterized in that: A driving unit is provided on the base (1) on which the rotating shaft (3) is mounted. The driving unit comprises a turntable (6) rotatably arranged on the side wall of the base (1) and sleeved on the outer wall of the rotating shaft (3). The control sleeve (4) is connected to the turntable (6).

2. The spring roller blind control head according to claim 1, characterized in that: The driving unit comprises a plurality of slots (7) uniformly arranged in the circumferential direction on the turntable (6), and the outer wall of the turntable (6) is provided with a plurality of protruding teeth (8) arranged in an alternating manner with the slots (7).

3. The spring roller blind control head according to claim 2, characterized in that: A mounting groove (9) for accommodating a turntable (6) is provided on the base (1) on which the rotating shaft (3) is mounted. A plurality of pull beads (10) are arranged between the turntable (6) and the mounting groove (9) and are in contact with the slot opening (7). The plurality of pull beads (10) are connected by a traction rope (11).

4. The rolling shutter head according to claim 1, characterized in that: A circular cavity is provided inside the base (1) on which the rotating shaft (3) is installed. A volute spring (15) is provided in the circular cavity. One end of the inner side of the volute spring (15) is connected to the rotating shaft (3). An inner ring (12) is provided on the outer side wall of the volute spring (15) and is rotatably installed on the inner wall of the circular cavity.

5. The rolling shutter head according to claim 4, characterized in that: The outer wall of the inner ring (12) is evenly provided with a plurality of limit blocks (121) corresponding to the positions of the grooves (122), and the limit blocks (121) are provided with a groove (122) on a side away from the inner ring (12).

6. The spring roller blind control head according to claim 5, characterized in that: The inner wall of the mounting groove (9) is hinged with a plurality of control plates (13) corresponding to the positions of the limit blocks (121) via torsion springs. A plug rod (14) is hinged on one side of the control plate (13) close to the inner ring (12). The plug rod slides through the base (1) and abuts against the groove (122).

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