A constant force multiple spring curtain rolling system

Abstract

The present invention provides a constant-force multiple spring curtain winding system, comprising a mounting bracket fixedly connected to a wall, and a rotating drum connected to the curtain, one end of the mounting bracket being connected to a rotating rod via a speed changing mechanism, a constant-force spring mechanism fixedly connected to the rotating drum being provided on the rotating rod, and the rotating rod being fixedly connected to a constant-force elastic member in the constant-force spring mechanism, the present invention adjusts the speed of the rotating drum via the speed changing mechanism, and when the rotating drum rotates at high speed, the rotating rod is rotated at a low speed via the speed changing mechanism, ensuring that the rotating drum rotates a sufficient number of times to meet the height of the curtain, and that the width of the curtain can be maximized, reducing the counterweight of the lower rail of the curtain, and meeting the requirements of the curtain size by increasing or decreasing the number of constant-force spring mechanisms, and the curtain can stay at any position, the present invention has a novel structure, is simple to operate, has a wide range of uses, and is extremely easy to promote.

Description

Technical Field

[0001] The present invention relates to the technical field of pull-free curtains, and in particular to a constant-force multiple spring curtain rolling system. Background Art

[0002] The existing pull-free roller blinds and rainbow blinds on the market mostly use torsion spring rods or head-type constant-force springs for their opening and closing systems. These two types of springs have many restrictions on the opening and closing of curtains. The more the spring rod is pulled downward when opening and closing the curtain, the greater the force, and the curtain rebound is difficult to control. The head-type constant-force spring is difficult to adapt to the size and height of the curtain. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a constant force multiple spring curtain rolling system.

[0004] The object of the present invention is achieved in the following manner:

[0005] A constant force multiple spring curtain winding system includes a mounting bracket fixedly connected to a wall and a rotating drum connected to the curtain. One end of the mounting bracket is connected to a rotating rod through a speed change mechanism. A constant force spring mechanism fixedly connected to the rotating drum is provided on the rotating rod. The rotating rod is fixedly connected to a constant force elastic member in the constant force spring mechanism.

[0006] The speed shifting mechanism includes a fixed tooth, a shifting tooth and a shifting barrel. The fixed tooth is fixedly connected to the mounting bracket. The shifting tooth is fixedly connected to the rotating rod through the shifting bracket. An annular rotating rack is provided in the shifting barrel. The shifting tooth is placed between the fixed tooth and the rotating rack. The shifting tooth is connected to the fixed tooth and the rotating rack through gear meshing. A first fixed groove for use with the rotating barrel is provided on the outside of the shifting barrel.

[0007] There are at least three speed change teeth.

[0008] The constant force spring mechanism includes a constant force spring box, a spring rotating core is provided in the constant force spring box, the outer side of the spring rotating core is fixedly connected to the constant force elastic member, the inner side of the spring rotating core is fixedly connected to the rotating rod, and a second fixing groove for use with the rotating drum is provided on the outer side of the constant force spring box.

[0009] A fixing rib is provided inside the rotating drum along the length direction, and the fixing rib is inserted and connected with the first fixing groove and the second fixing groove.

[0010] The cross section of the rotating rod is D-shaped.

[0011] The constant force elastic member is a constant force spring.

[0012] Compared with the prior art, the present invention adjusts the speed of the drum through a speed change mechanism. When the drum rotates at high speed, the speed change mechanism causes the rotating rod to rotate at a low speed, ensuring that the drum rotates a sufficient number of times to meet the height of the curtain, and the curtain width can be maximized, reducing the weight of the curtain lower rail. The curtain size requirements are met by increasing or decreasing the number of constant force spring mechanisms, and the curtain can stay at any position. The present invention has a novel structure, simple operation, a wide range of uses, and is extremely easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a structural diagram of the mounting bracket.

[0015] Figure 3 This is a schematic diagram of the installation of the shift barrel and shift bracket.

[0016] Figure 4 It is a structural diagram of the speed change bracket.

[0017] Figure 5 yes Figure 1 Schematic diagram of direction A in the middle.

[0018] Figure 6 It is a structural diagram of the gear shift cylinder.

[0019] Figure 7 It is a structural diagram of the constant force spring box.

[0020] Figure 8 It is a schematic diagram of the internal structure of the constant force spring box.

[0021] Figure 9 It is a structural diagram of a constant force elastic member.

[0022] Figure 10 It is a structural diagram of the spring core.

[0023] Figure 11 It is a side view of the spring core.

[0024] Figure 12 is a side view of the rotating rod.

[0025] Figure 13 It is a schematic diagram of the installation of the present invention and the curtain.

[0026] Among them, 1. mounting bracket, 101. fixed tooth, 2. shift barrel, 3. shift bracket, 4. constant force spring box, 5. rotating rod, 6. shift tooth, 7. rotating rack, 8. second fixed groove, 9. constant force elastic part, 10. spring rotating core, 11. first fixed groove. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0034] The disclosure below provides many different embodiments or examples for implementing different structures of embodiments of the present invention. In order to simplify the disclosure of embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, embodiments of the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but those of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0035] As attached Figures 1 to 13 As shown, a constant force multiple spring curtain rolling system includes a mounting bracket 1 fixedly connected to the wall, and a rotating drum connected to the curtain, one end of the mounting bracket 1 is connected to the rotating rod 5 through a speed change mechanism, and a constant force spring mechanism fixedly connected to the rotating drum is provided on the rotating rod 5, the rotating rod 5 is fixedly connected to the constant force elastic member 9 in the constant force spring mechanism, the constant force spring box 4 of the constant force spring mechanism is sleeved on the rotating drum and fixedly connected to the rotating drum, and the speed change drum 2 of the speed change mechanism is also fixedly connected to the rotating drum, and the rotating drum rotates under the drive of the curtain, and the rotating drum drives the speed change drum 2 and the constant force spring box 4 to quickly rotate. The speed of the drum is adjusted by the speed change mechanism. When the drum rotates at a high speed, the speed change mechanism is used to rotate the rotating rod 5 at a low speed to ensure that the drum rotates a sufficient number of times to meet the height of the curtain, and the width of the curtain can be maximized, and the weight of the lower rail of the curtain can be reduced. By increasing or decreasing the constant force spring mechanism, the curtain can stay at any position. The present invention has a novel structure, simple operation, a wide range of uses, and is very easy to promote.

[0036] The speed change mechanism includes a fixed tooth 101, a speed change tooth 6 and a speed change barrel 2. The fixed tooth 101 is fixedly connected to the mounting bracket 1. The speed change tooth 6 is fixedly connected to the rotating rod 5 through the speed change bracket 3. An annular rotating rack 7 is provided in the speed change barrel 2. The speed change tooth 6 is arranged between the fixed tooth 101 and the rotating rack 7. The speed change tooth 6 is connected to the fixed tooth 101 and the rotating rack 7 through gear meshing. A first fixed groove 11 for use with the rotating barrel is provided on the outside of the speed change barrel 2. In the speed change mechanism, the speed change barrel 2, the fixed tooth 101 and the speed change tooth 6 are fixedly connected to the mounting bracket 1. The fixed tooth 101 is fixed to the mounting bracket 1. The speed gear 6 is arranged on the speed shift bracket 3, and both ends of the speed gear 6 are hinged on the speed shift bracket 3. One end of the speed shift bracket 3 is fixedly connected to the rotating rod 5. The speed gear 6 is installed on the speed shift bracket 3 and then the speed shift barrel 2 is sleeved. The outer side of the speed gear 6 is engaged with the rotating rack 7. The fixed gear 101 is inserted and connected inside the speed shift bracket 3. The fixed gear 101 is engaged with the inner part of the speed gear 6. The speed barrel 2 is fixedly connected to the rotating barrel. The rotating barrel drives the speed shift barrel 2 to rotate. The speed shift barrel 2 drives the speed shift bracket 3 to rotate by rotating the rack 7. The speed shift bracket 3 drives the rotating rod 5 to rotate. It is worth noting that there are at least three speed gears 6, as shown in the attached figure. Figure 5 As shown, there are preferably four speed-changing teeth 6, and the speed-changing teeth 6 and the fixed teeth 101 are arranged as planetary gears. When the speed-changing drum 2 rotates rapidly, the rotating rod 5 rotates slowly. The specific process is that when the curtain is manually pulled down, the curtain drives the rotating drum to rotate at high speed. The rotating drum is fixedly connected to the speed-changing drum 2. When the rotating drum rotates at high speed, it drives the speed-changing drum 2 to rotate at high speed. The speed-changing drum 2 drives the speed-changing teeth 6 to rotate through the rotating rack 7. The speed-changing teeth 6 cooperate with the fixed teeth 101 to drive the speed-changing bracket 3 to rotate slowly. The specific process is that when the rotating drum rotates 35 times, the rotating drum drives the speed-changing drum 2 to rotate 35 times, and the speed-changing drum 2 drives the speed-changing bracket 3 through the speed-changing teeth 6 and the fixed teeth 101. The speed-changing bracket 3 reaches the rotation of the rotating rod 5, and the rotating rod 5 only rotates 10 times. The speed ratio is 3.5:1, which ensures that the rotating drum rotates enough times to meet the height of the curtain.

[0037] The constant force spring mechanism includes a constant force spring box 4, a spring core 10 is provided in the constant force spring box 4, the outer side of the spring core 10 is fixedly connected to the constant force elastic member 9, the inner side of the spring core 10 is fixedly connected to the rotating rod 5, a second fixed groove 8 for use with the rotating drum is provided on the outer side of the constant force spring box 4, a spring core 10 is placed in the constant force spring box 4, the spring core 10 is fixedly connected to the constant force elastic member 9, the constant force spring box 4 is fixedly connected to the rotating drum, the constant force spring box 4 is sleeved inside the rotating drum, the constant force spring box 4 rotates synchronously with the speed change drum 2, and when the constant force spring box 4 rotates at high speed, the spring core 10 is fixedly connected to the rotating rod 5 Fixed connection, the rotating rod 5 drives the spring core 10 to rotate slowly, and then drives the constant force elastic member 9 to deform through the spring core 10. The specific fixing method is that a fixing rib is provided inside the rotating cylinder along the length direction, and the fixing rib is inserted and connected with the first fixing groove 11 and the second fixing groove 8. The fixing rib connects the speed change cylinder 2 and the constant force spring box 4 as a whole through the first fixing groove 11 and the second fixing groove 8, so as to realize the synchronous rotation of the speed change cylinder 2 and the constant force spring box 4. It is worth noting that the rotating rod 5 is not fixedly connected to the constant force spring box 4, but is only fixedly connected to the spring core 10. The spring core 10 is connected to the constant force spring box 4 through the constant force elastic member 9.

[0038] The cross section of the rotating rod 5 is D-shaped.

[0039] The constant-force elastic member 9 is a constant-force spring, a conventional technique. Constant-force springs consist of a spiral metal sheet with an inner curvature, so that each coil of metal is tightly wound around the coil within it. When the metal sheet is stretched (torsional), the internal stress resists the load, much like a conventional tension spring, but with a near-constant (zero) coefficient. In use, this spring is typically tightly wound around a drum using an ID, with its free end attached to the load, much like a counterweight. However, the reverse arrangement can also be employed, with the free end fixed and the spring itself providing the working force, much like a carbon brush in an electrical device.

[0040] The working process of the present invention is as follows: a constant force spring mechanism fixedly connected to the rotating drum is provided on the rotating rod 5, the rotating rod 5 is fixedly connected to the constant force elastic member 9 in the constant force spring mechanism, the constant force spring box 4 of the constant force spring mechanism is sleeved on the rotating drum and fixedly connected to the rotating drum, and at the same time, the speed change drum 2 of the speed change mechanism is also fixedly connected to the rotating drum, the rotating drum rotates under the drive of the curtain, the rotating drum drives the speed change drum 2 and the constant force spring box 4 to rotate rapidly and synchronously, and then the rotating rod 5 is rotated slowly through the speed change mechanism, and the rotating drum and the constant force spring box 4 rotate synchronously for 3.5 turns. When the curtain is raised, the rotating rod 5 rotates only once to meet the curtain height. The speed of the drum is adjusted by the speed change mechanism. When the drum rotates at high speed, the speed change mechanism causes the rotating rod 5 to rotate at a low speed to ensure that the drum rotates enough times to meet the curtain height. The curtain width can be maximized and the weight of the curtain lower rail is reduced. The curtain can be stopped at any position by increasing or decreasing the constant force spring mechanism. The present invention has a novel structure, simple operation, a wide range of uses, and is easy to promote. The speed change mechanism includes a fixed tooth 101, a speed change tooth 6 and a speed change drum 2. The fixed tooth 101 is fixed The speed change gear 6 is fixedly connected to the mounting bracket 1, and the speed change gear 6 is fixedly connected to the rotating rod 5 through the speed change bracket 3. An annular rotating rack 7 is provided in the speed change barrel 2. The speed change gear 6 is arranged between the fixed tooth 101 and the rotating rack 7. The speed change gear 6 is connected to the fixed tooth 101 and the rotating rack 7 through gear meshing. A first fixed groove 11 is provided on the outer side of the speed change barrel 2 for use with the rotating barrel. In the speed change mechanism, the speed change barrel 2, the fixed tooth 101 and the speed change gear 6 are included. The fixed tooth 101 is fixed on the mounting bracket 1, and the speed change gear 6 is arranged on the speed change bracket 3. The two ends of the speed change gear 6 are It is hinged on the speed change bracket 3, and one end of the speed change bracket 3 is fixedly connected to the rotating rod 5. The speed change gear 6 is installed on the speed change bracket 3 and is sleeved on the speed change barrel 2. The outer side of the speed change gear 6 is engaged with the rotating rack 7. The fixed gear 101 is inserted into the inside of the speed change bracket 3, and the fixed gear 101 is engaged with the inner part of the speed change gear 6. The speed change barrel 2 is fixedly connected to the rotating barrel, and the rotating barrel drives the speed change barrel 2 to rotate. The speed change barrel 2 drives the speed change bracket 3 to rotate through the rotating rack 7, and the speed change bracket 3 drives the rotating rod 5 to rotate. It is worth noting that there are at least three speed change teeth 6, as shown in the attached figure. Figure 5 As shown, the speed gear 6 is preferably four, and the speed gear 6 and the fixed gear 101 are arranged as a planetary gear. When the speed drum 2 rotates quickly, the rotating rod 5 rotates slowly. When the curtain is manually pulled down, the curtain drives the drum to rotate at high speed. The drum is fixedly connected to the speed drum 2. When the drum rotates at high speed, it drives the speed drum 2 to rotate at high speed. The speed drum 2 drives the speed gear 6 to rotate through the rotating rack 7. The speed gear 6 cooperates with the fixed gear 101 to drive the speed shift bracket 3 to rotate slowly. The specific process is that when the drum rotates 35 times, the drum drives the speed drum 2 to rotate 35 times, and the speed drum 2 drives the speed shift bracket 3 through the speed gear 6 and the fixed gear 101. The speed shift bracket 3 reaches the rotation of the rotating rod 5, and the rotating rod 5 only rotates 10 times. The speed ratio is 3.5:1, which ensures that the drum rotates enough times to meet the height of the curtain.

[0041] The constant force spring mechanism includes a constant force spring box 4, a spring core 10 is provided in the constant force spring box 4, the outer side of the spring core 10 is fixedly connected to the constant force elastic member 9, the inner side of the spring core 10 is fixedly connected to the rotating rod 5, and a second fixed groove 8 for use with the rotating drum is provided on the outer side of the constant force spring box 4. The spring core 10 is placed in the constant force spring box 4, the spring core 10 is fixedly connected to the constant force elastic member 9, the constant force spring box 4 is fixedly connected to the rotating drum, the constant force spring box 4 is sleeved inside the rotating drum, the constant force spring box 4 rotates synchronously with the speed change drum 2, and when the constant force spring box 4 rotates at high speed, the spring core 1 0 is fixedly connected to the rotating rod 5, and the rotating rod 5 drives the spring rotating core 10 to rotate slowly, and then drives the constant force elastic member 9 to deform through the spring rotating core 10. The specific fixing method is that a fixing rib is provided inside the rotating drum along the length direction, and the fixing rib is inserted and connected with the first fixing groove 11 and the second fixing groove 8. The fixing rib connects the speed change drum 2 and the constant force spring box 4 as a whole through the first fixing groove 11 and the second fixing groove 8, so that the speed change drum 2 and the constant force spring box 4 rotate synchronously. It is worth noting that the rotating rod 5 is not fixedly connected to the constant force spring box 4, but is fixedly connected to the spring rotating core 10. The spring rotating core 10 is fixedly connected to the spring rotating core 10. The core 10 is connected to the constant force spring box 4 through the constant force elastic member 9. The specific process is that when the curtain is manually pulled down, the curtain drives the drum to rotate at high speed. The drum is fixedly connected to the speed change drum 2. The drum is fixedly connected to the speed change drum 2 and the constant force spring box 4 through the fixed ribs. When the drum rotates at high speed, it drives the speed change drum 2 and the constant force spring box 4 to rotate at high speed. The speed change drum 2 drives the speed change gear 6 to rotate through the rotating rack 7. The speed change gear 6 cooperates with the fixed gear 101 to drive the speed change bracket 3 to rotate slowly. The specific process is that when the drum rotates 35 times, the drum drives the speed change drum 2 and the constant force spring box 4 to rotate 35 times. The speed change drum 2 drives the speed change bracket 3 through the speed change gear 6 and the fixed gear 101, and the speed change bracket 3 reaches the rotation of the rotating rod 5. The rotating rod 5 only rotates 10 circles, and the rotating rod 5 drives the spring rotating core 10 to rotate 10 circles, so that the constant force spring rotates 10 circles, and the speed ratio is 3.5:1, ensuring that the rotating drum rotates enough circles to meet the height of the curtain. The elastic force of the constant force spring is equal to the gravity of the curtain itself, forming a gravity balance, so that the curtain can be pulled to any position and stopped. When retracting, lift the bottom of the curtain with your hand, the balance between the curtain and the constant force spring is destroyed, and the elastic force of the constant force spring drives the rotating drum to rotate, driving the curtain to be retracted.

[0042] The present invention adjusts the speed of the drum through a speed change mechanism. When the drum rotates at high speed, the speed change mechanism causes the rotating rod 5 to rotate at a low speed, ensuring that the drum rotates a sufficient number of times to meet the height of the curtain, and the curtain width can be maximized, reducing the weight of the curtain lower rail. By increasing or decreasing the constant force spring mechanism, the curtain can stay at any position. The present invention has a novel structure, simple operation, a wide range of uses, and is extremely easy to promote.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] The technical features of the above-described embodiments can be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there are no contradictions in the combination of these technical features, they should be considered to be within the scope of this specification. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention. Moreover, for those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments without departing from the spirit of the principles of the present invention are all within the scope of this specification.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. A constant-force spring curtain retracting system, comprising a mounting bracket fixedly connected to a wall and a rotating drum connected to the curtain, characterized in that: One end of the mounting bracket is connected to a rotating rod through a speed change mechanism, and a constant force spring mechanism fixedly connected to the rotating drum is provided on the rotating rod, and the rotating rod is fixedly connected to a constant force elastic member in the constant force spring mechanism; The shift mechanism includes a fixed tooth, a shift tooth and a shift barrel, wherein the fixed tooth is fixedly connected to the mounting bracket, the shift tooth is fixedly connected to the rotating rod via the shift bracket, an annular rotating rack is provided in the shift barrel, the shift tooth is arranged between the fixed tooth and the rotating rack, the shift tooth is meshed with the fixed tooth and the rotating rack via a gear, and a first fixed groove for use with the rotating barrel is provided on the outer side of the shift barrel; The constant force spring mechanism includes a constant force spring box, a spring core is provided in the constant force spring box, the outer side of the spring core is fixedly connected to the constant force elastic member, the inner side of the spring core is fixedly connected to the rotating rod, and a second fixing groove for use with the rotating drum is provided on the outer side of the constant force spring box; the speed change teeth are at least three; A fixing rib is provided inside the rotating drum along the length direction, and the fixing rib is inserted and connected with the first fixing groove and the second fixing groove.

2. The constant force multiple spring curtain rolling system according to claim 1, characterized in that: The cross section of the rotating rod is D-shaped.

3. The constant force multiple spring curtain rolling system according to claim 2, characterized in that: The constant force elastic member is a constant force spring.

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