Roller shutter device without pulling beads

Abstract

The utility model discloses a bead-free roller shutter device which comprises a first shell and a second shell, the first shell is provided with a driven gear and a driving gear, the driven gear is meshed with the driving gear, the second shell is fixedly connected with the first shell in a detachable mode, and the driving gear is meshed with the driven gear. The plurality of second shells are detachably connected with each other, when the plurality of second shells are connected with each other, an anti-bending structure is arranged, and a winding shaft is arranged on one side of each second shell. The multiple second shells are connected in series through the detachable characteristic, the total number of the coil springs is increased, the force needed for rotating the driven gear is correspondingly increased, and a roller shutter manufacturer can flexibly match different numbers of coil spring transmission mechanisms according to the weight of a door shutter. A rotating mechanism that the driving gear is driven by the driven gear is adopted, and the transmission mechanism can be matched with a heavier door curtain under the action of the same coil spring force.

Description

TECHNICAL FIELD

[0001] The utility model relates to a roller blind device technical field especially relates to a kind of no pull bead roller blind device. BACKGROUND

[0002] The existing roller blind device includes a winding pipe and a door curtain wound on the winding pipe. The roller blind device drives the whole door curtain to be wound up and down to realize its lifting. During use, the user usually lifts the door curtain manually or by other means and moves it to the desired position. The transmission mechanism in the winding pipe enables the door curtain to be stably kept at the required position.

[0003] The existing transmission mechanism usually relies on the elastic force of a coil spring to balance the gravity of the door curtain to ensure that the door curtain can be stably kept at the specified position. However, this design has certain limitations. When the weight of the door curtain changes, the manufacturer of the transmission mechanism needs to select a transmission mechanism containing one or more coil springs according to the weight of the door curtain and provide it to the roller blind manufacturer, which will prolong the waiting period of the roller blind manufacturer. In addition, in order to balance the weight of the door curtain, multiple coil springs often work together, which not only increases the volume of the transmission mechanism but also increases the production cost. Therefore, the applicant has made beneficial designs and found a method to solve the above problems. The technical scheme to be introduced below is generated in this background. SUMMARY

[0004] The utility model discloses a kind of flexible adaptation, small in size, reduce the product of manufacturing cost to overcome the shortcoming of the design of above-mentioned traditional transmission mechanism.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A kind of no pull bead roller blind device, including first shell, second shell, the first shell is equipped with driven gear, driving gear, the driven gear engages driving gear, the second shell is fixed by detachable with first shell connection, multiple the second shell is connected with each other by detachable, one side of the second shell is equipped with winding shaft, and is inserted into driven gear, the upper and lower of the winding shaft is equipped with passageway, the other side of the second shell is equipped with coil spring, one end of the coil spring is connected with one passageway fixed.

[0007] Preferably, the two ends and upper and lower of the first shell and the upper and lower of the second shell are provided with retreat-stop portions, and the retreat-stop portion of the second shell is close to one end face thereof.

[0008] Preferably, the two sides and upper and lower of the first shell and the second shell are provided with guide holes, and one end of the through hole of the second shell is provided with a guide column and is inserted into the guide hole of the first shell or the second shell.

[0009] Preferably, the first shell is provided with a detachable end cover, the end cover is provided with a guide column corresponding to a guide hole, and the guide column is inserted into the guide hole of the first shell.

[0010] Preferably, the two sides of the end cover and the upper and lower parts of the second shell are provided with ear buckles, and the ear buckles of the second shell are arranged away from the stop part of the second shell.

[0011] Preferably, the second shell is provided with a cavity with an opening, and the cavity accommodates a winding shaft and a coil spring, one side of the cavity is provided with a rotating shaft, the pipe sleeve is arranged on the rotating shaft, and the other side of the cavity is provided with a through hole.

[0012] Preferably, the cavity is provided with a sink at the entrance, the sink is provided with a cover plate, the two sides and the upper and lower parts of the cover plate are provided with reverse buckles, and the cavity is provided with a contact groove in contact with the reverse buckles.

[0013] Preferably, one end of the winding shaft is provided with a driving part, and the driving part penetrates the cover plate, the driving part is embedded in a driven gear, the other end of the winding shaft is provided with a driving groove, and the driving groove is coaxial with the through hole, one end of the channel is provided with a protruding part, and the entrance of the protruding part is provided with an inclined surface.

[0014] Preferably, the driving gear is provided with a transmission part, and the transmission part penetrates the end cover.

[0015] Preferably, the detachable part is an ear buckle.

[0016] Beneficial effects:

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The utility model realizes quick connection between the first shell and the second shell, simplifies the assembly process, improves the assembly efficiency, and significantly reduces the production cost; in addition, a plurality of second shells are connected in series by virtue of the detachable characteristic, the total number of coil springs is increased, the force required for rotating the driven gear is correspondingly improved, the roller shutter manufacturer can flexibly match different numbers of coil spring transmission mechanisms according to the weight of the door curtain, and the product has the advantages of flexible adaptation and practicality.

[0019] (2) In the process that the transmission mechanism follows the rotation of the winding pipe, the utility model innovatively adopts a rotation mechanism that the driven gear drives the driving gear, effectively transmits power to the driving gear, and this design advantage means that under the action of the same coil spring force, the transmission mechanism can adapt to a heavier door curtain, thereby reducing the number and weight of the required coil springs, not only reducing the production cost, but also reducing the volume of the overall structure after assembly of a plurality of transmission mechanisms, and improving the space utilization efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of a no-pull-bead roller shutter device of the utility model;

[0021] Figure 2 It is a side cross section structure schematic view of a no-pull-bead roller shutter device of the utility model;

[0022] Figure 3 It is a cross section structure schematic view of a no-pull-bead roller shutter device of the utility model Figure 1 ;

[0023] Figure 4 It is a cross section structure schematic view of a no-pull-bead roller shutter device of the utility model Figure 2 ;

[0024] Figure 5 It is a no-pull-bead roller shutter device of the utility model Figure 4 's partial enlarged view A;

[0025] Figure 6 It is an exploded schematic view of a no-pull-bead roller shutter device of the utility model Figure 1 ;

[0026] Figure 7 It is an exploded schematic view of a no-pull-bead roller shutter device of the utility model Figure 2 ;

[0027] The correspondence between the various figure marks and the component names in the drawing is as follows:

[0028] Mark: 1, first housing; 2, second housing; 3, retreat stop; 4, guide hole; 5, end cover; 6, cover plate; 7, ear buckle; 11, driven gear; 12, driving gear; 121, transmission part; 21, winding shaft; 22, coil spring; 23, guide column; 24, cavity; 25, rotating shaft; 26, through hole; 211, channel; 212, protruding part; 213, inclined surface; 214, driving part; 215, driving groove; 241, sink groove; 242, abutting groove; 61, reverse buckle. DETAILED DESCRIPTION

[0029] The technical solutions of the utility model will be described clearly and completely below in combination with embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] In the description of the utility model, it is understood that the directions or position relations indicated by the terms "upper", "lower", "left", "right" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0031] In the embodiments of the utility model, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects have an "or" relationship.

[0032] Reference example Figures 1 to 7 A pull bead-free roller shutter device, comprising a first shell 1, a second shell 2, the first shell 1 is provided with a driven gear 11 and a driving gear 12, the driven gear 11 is engaged with the driving gear 12, the second shell 2 is connected and fixed with the first shell 1 through detachable type, a plurality of second shells 2 are connected with each other through detachable type, one side of the second shell 2 is provided with a winding shaft 21 and is inserted into the driven gear 11, the upper and lower parts of the winding shaft 21 are provided with passages 211, the other side of the second shell 2 is provided with a coil spring 22, one end of the coil spring 22 is connected and fixed with one of the passages 211, the first shell 1 and the second shell 2 are quickly connected, the assembly process is simplified, the assembly efficiency is improved, and the production cost is significantly reduced; in addition, a plurality of second shells 2 are connected in series through the detachable characteristic, not only the total number of the coil springs 22 is increased, but also the force required for rotating the driven gear 11 is correspondingly improved, and the roller shutter manufacturer can flexibly match different numbers of coil spring 22 transmission mechanisms according to the weight of the door curtain; in the process that the transmission mechanism follows the rotation of the winding pipe, the rotation mechanism that the driven gear 11 drives the driving gear 12 is innovatively adopted, power is effectively transmitted to the driving gear 12, and this design advantage means that under the action of the same force of the coil spring 22, the transmission mechanism can adapt to a heavier door curtain, so that the number and weight of the coil spring 22 required are reduced, not only the production cost is reduced, but also the overall structure of the plurality of transmission mechanisms after assembly is reduced in size, and the space utilization efficiency is improved.

[0033] It is worth mentioning that the two ends and the upper and lower parts of the first shell 1 and the upper and lower parts of the second shell 2 are provided with retreat-stop portions 3, the retreat-stop portion 3 of the second shell 2 is close to one end face thereof, the retreat-stop portions 3 of the two ends of the first shell 1 abut against the ear clasps 7 of the end covers 5, and the retreat-stop portions 3 of the upper and lower parts of the first shell 1 abut against the ear clasps 7 of the second shell 2;

[0034] It is worth mentioning that the first shell 1, the second shell 2 is equipped with guide hole 4 on both sides of the upper and lower, the through hole 26 of the second shell 2 is equipped with guide column 23, and is inserted in the guide hole 4 of the first shell 1 or the second shell 2, the guide hole 4 provides the guide function for the connection between the second shell 2 and the first shell 1, the end cover 5 and the first shell 1, at the same time, the connection structure of the guide column 23 and the guide hole 4 increases the connection strength between the second shell 2 and the first shell 1, the end cover 5 and the first shell 1, and the like, a plurality of second shell 2 is connected with each other, and the guide column 23 is inserted into the guide hole 4, and the technical effects are consistent with the above;

[0035] It is worth mentioning that the first shell 1 is provided with a detachable end cover 5, the end cover 5 is provided with a guide column 23 corresponding to the guide hole 4, and is inserted into the guide hole 4 of the first shell 1, the end cover 5 protects the driven gear 11 and the driving gear 12, and prevents dust from entering;

[0036] It is worth mentioning that the both sides of the end cover 5, the upper and lower of the second shell 2 are equipped with ear buckle 7, and abut against the stop portion 3, the ear buckle 7 of the second shell 2 is arranged away from the position of the stop portion 3 of the second shell 2, the position of the ear buckle 7 of the second shell 2 and the position of the stop portion 3 make the adjacent second shell 2 connected with each other in series;

[0037] It is worth mentioning that the second shell 2 is provided with a cavity 24 with an opening and containing a winding shaft 21 and a coil spring 22, one side of the cavity 24 is provided with a rotating shaft 25, a pipe sleeve is arranged on the rotating shaft 25, the other side of the cavity 24 is provided with a through hole 26, the rotating shaft 25 makes the coil spring 22 rotate as the axis, and provides a support point, the through hole 26 is used for inserting the protruding portion 212 of the adjacent winding shaft 21 into the driving groove 215, so that a plurality of winding shafts 21 move synchronously;

[0038] It is worth mentioning that the inlet of the cavity 24 is provided with a sink 241, the sink 241 is provided with a cover plate 6, the both sides and the upper and lower of the cover plate 6 are provided with reverse buckles 61, the cavity 24 is provided with abutting grooves 242 abutting against the reverse buckles 61, the cover plate 6 is quickly fixed in the sink 241 through the reverse buckles 61, and the assembly efficiency is improved, the cover plate 6 is ingeniously used, the winding shaft 21 and the coil spring 22 are effectively prevented from accidentally separating from the cavity 24 in the operation process, thereby forming an independent transmission mechanism, in this way, the customer need not worry about the parts falling off when freely combining and assembling, the convenience and flexibility of assembly are greatly enhanced, and personalized matching becomes simpler and faster;

[0039] It is worth mentioning that one end of the winding shaft 21 is provided with a driving part 214, and passes through the cover plate 6, the driving part 214 is embedded in the driven gear 11, the other end of the winding shaft 21 is provided with a driving groove 215, and is coaxial with the through hole 26, one end of the channel 211 is provided with a protruding part 212, the entrance of the protruding part 212 is provided with an inclined surface 213, the shapes of the driving part 214 and the driving groove 215 are hexagonal, square, pentagonal and other shapes that can transmit driving force, one end of the coil spring 22 enters the through hole 26 through the inclined surface 213, with the movement of the coil spring 22 on the inclined surface 213 and close to the upper end of the through hole 26, the clamping force between the inclined surface 213 and the through hole 26 is generated, and the coil spring 22 is tightly fixed, this design saves the use of fasteners, simplifies the installation process of the coil spring 22, effectively improves the assembly efficiency, and further reduces the production cost;

[0040] It is worth mentioning that the driving gear 12 is provided with a transmission part 121, and passes through the end cover 5, the transmission part 121 is connected and fixed with the rotating seat at both ends of the pipe, and the number of teeth of the driving gear 12 is less than that of the driven gear 11.

[0041] It is worth mentioning that the ear buckle 7 is detachably arranged.

[0042] The above design scheme can realize flexible adaptation, small size and low manufacturing cost of the product.

[0043] The above content is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection range determined by the claims of the utility model.

Claims

1. A pull-bead-free roller blind device comprising a first housing (1), a second housing (2), characterized in that: The first shell (1) is provided with a driven gear (11) and a driving gear (12), the driven gear (11) engages the driving gear (12), the second shell (2) is detachably connected with the first shell (1), a plurality of the second shells (2) are detachably connected with each other, one side of the second shell (2) is provided with a winding shaft (21) which is inserted into the driven gear (11), the upper and lower parts of the winding shaft (21) are provided with passages (211), the other side of the second shell (2) is provided with a winding spring (22), one end of the winding spring (22) is fixedly connected with one of the passages (211).

2. The beadless roller blind device of claim 1, wherein: The two ends and the upper and lower parts of the first shell (1) and the upper and lower parts of the second shell (2) are provided with retreat-stop portions (3), the retreat-stop portion (3) of the second shell (2) is close to one end surface thereof.

3. The beadless roller blind device of claim 2, wherein: The upper and lower parts of the two sides of the first shell (1) and the second shell (2) are provided with guide holes (4), one end of the through hole (26) of the second shell (2) is provided with a guide column (23) which is inserted into the guide hole (4) of the first shell (1) or the second shell (2).

4. The beadless roller blind arrangement of claim 3, wherein: The first shell (1) is provided with a detachable end cover (5), the end cover (5) is provided with a guide column (23) corresponding to the guide hole (4) and is inserted into the guide hole (4) of the first shell (1).

5. The beadless roller blind arrangement of claim 4, wherein: The two sides of the end cover (5) and the upper and lower parts of the second shell (2) are provided with ear buckles (7) which abut against the retreat-stop portions (3), the ear buckle (7) of the second shell (2) is arranged at a position away from the retreat-stop portion (3) of the second shell (2).

6. The beadless roller shade assembly of claim 1, wherein: The second shell (2) is provided with a chamber (24) which has an opening and accommodates the winding shaft (21) and the winding spring (22), one side of the chamber (24) is provided with a rotating shaft (25), a pipe sleeve is arranged on the rotating shaft (25), the other side of the chamber (24) is provided with a through hole (26).

7. The beadless roller blind arrangement of claim 6, wherein: The chamber (24) is provided with a sink (241) at the inlet thereof, the sink (241) is provided with a cover plate (6), the two sides and the upper and lower parts of the cover plate (6) are provided with reverse buckles (61), the chamber (24) is provided with abutting grooves (242) which abut against the reverse buckles (61).

8. The beadless roller blind device of claim 7, wherein: One end of the winding shaft (21) is provided with a driving portion (214) which penetrates through the cover plate (6), the driving portion (214) is embedded into the driven gear (11), the other end of the winding shaft (21) is provided with a driving groove (215) which is coaxial with the through hole (26), one end of the passage (211) is provided with a protruding portion (212), the inlet of the protruding portion (212) is provided with an inclined surface (213).

9. The beadless roller shade assembly of claim 4, wherein: The driving gear (12) is provided with a transmission portion (121) which penetrates through the end cover (5).

10. The beadless roller blind device of claim 5, wherein: The detachable structure is the ear buckle (7).

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