A blind roller drive

Abstract

The utility model discloses a shutter curtain winding rope device drive arrangement, including casing, rotation axis, fixed axle and elastic steel band, rotation axis can rotate and install in the casing, fixed axle installs in the casing, and rotation axis and fixed axle interval setting, and elastic steel band is wound on the fixed axle, and one end of elastic steel band is connected with rotation axis, and the rotation axis is provided with the connecting jack. The utility model belongs to the technical field of shutter curtain, and the utility model's purpose lies in solving the problem that exposed pull rope is easy to break in the prior art. The technical effect reached is: realize that no pull rope drive can drive the shutter to lift and pull down, and the frequency of the accidental occurrence is indirectly reduced.

Description

Technical Field

[0001] This utility model relates to the field of Venetian blind technology, specifically to a Venetian blind cord reel drive device. Background Technology

[0002] Traditional Venetian blind cord reel drives typically employ a pull cord transmission structure. Pulling the exposed cord drives the reel and gear set, thus raising and lowering the blind slats and adjusting their angle. However, this design has several drawbacks: the cord is prone to tangling, posing a safety risk, especially to children and pets, and related accidents are frequent; the cord is also prone to wear and breakage under prolonged stress, leading to device failure and requiring frequent maintenance and replacement. Utility Model Content

[0003] Therefore, this utility model provides a drive device for a Venetian blind cord reel to solve the above-mentioned problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] According to a first aspect of the present invention, a drive device for a Venetian blind cord reel includes a housing, a rotating shaft, a fixed shaft, and an elastic steel strip. The rotating shaft is rotatably installed inside the housing, and the fixed shaft is installed inside the housing. The rotating shaft and the fixed shaft are spaced apart. The elastic steel strip is wound around the fixed shaft, and one end of the elastic steel strip is connected to the rotating shaft. A connection hole is provided on the rotating shaft.

[0006] Furthermore, the rotating shaft includes a main rod, a turntable, and a rotating shaft part. A turntable is provided at each end of the main rod, and a rotating shaft part is provided on the side of each turntable away from the main rod. Both rotating shaft parts are rotatably connected to the housing, and one end of the elastic steel belt is connected to the main rod.

[0007] Furthermore, the rotating shaft also includes a locking block, which is located on one side of the main body rod, and one end of the elastic steel strip is connected to the locking block.

[0008] Furthermore, the turntable has multiple positioning holes arranged in a circular array, and the side wall of the housing has two limiting holes. The distance between any two adjacent positioning holes is equal to the distance between the two limiting holes.

[0009] Furthermore, the rotating shaft also includes limiting blocks. Each turntable has multiple limiting blocks arranged in a circular array on the side opposite to the main body rod, and the thickness of each limiting block is less than the thickness of the rotating shaft.

[0010] Furthermore, the housing includes a main shell and a side plate. The side plate is detachably connected to the main shell. Rotary holes are provided on the side wall of the main shell away from the side plate and on the side plate. The two ends of the rotating shaft are rotatably inserted into the rotating holes. One end of the fixed shaft is connected to the main shell, and the other end of the fixed shaft is connected to the side plate.

[0011] Furthermore, the housing also includes reinforcing members. Reinforcing members are provided on the inner wall of the main housing and on one side of the side plate, with the two reinforcing members located at both ends of the fixed shaft.

[0012] Furthermore, it also includes a first connecting rod, which is connected to the side of the side plate, and a connecting slot is provided on the main shell, into which the first connecting rod is inserted.

[0013] Furthermore, it also includes a second connecting rod, which is installed on one side of the side plate and inserted into the fixed shaft.

[0014] This invention has the following advantages: Through the coordinated design of the rotating shaft and the elastic steel belt, when the Venetian blinds need to be pulled down, they can be extended to the designated position simply by pulling them; to stop the blinds, as long as no external force is applied, the elasticity of the steel belt and the weight of the blinds will balance, allowing them to stop. This achieves the lifting and lowering of the blinds without the need for a pull cord, which is convenient and quick, indirectly reducing the frequency of accidents, avoiding wear and breakage of the pull cord due to long-term stress, reducing the probability of equipment failure, and reducing the frequency of maintenance and replacement. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 The first perspective view of a Venetian blind cord reel drive device provided for some embodiments of this utility model.

[0018] Figure 2 This is a second perspective view of a Venetian blind cord reel drive device provided for some embodiments of the present invention.

[0019] Figure 3A cross-sectional view of a Venetian blind cord reel drive device provided for some embodiments of this utility model.

[0020] Figure 4 This is a perspective view of a Venetian blind cord reel drive device without an elastic steel belt and a rotating shaft, provided for some embodiments of the present invention.

[0021] Figure 5 A perspective view of a Venetian blind cord reel drive device without an elastic steel belt and side plates, provided for some embodiments of this utility model.

[0022] Figure 6 A perspective view of the side plate of a Venetian blind cord reel drive device provided for some embodiments of this utility model.

[0023] Figure 7 A perspective view of the rotating shaft of a Venetian blind cord reel drive device provided for some embodiments of this utility model.

[0024] In the diagram: 1. Shell, 11. Main shell, 12. Side plate, 13. Rotary hole, 14. Limiting hole, 15. Connecting slot, 16. Reinforcing member, 17. First connecting rod, 18. Second connecting rod, 2. Rotating shaft, 21. Main body rod, 22. Turntable, 23. Clamping block, 24. Rotating shaft part, 25. Limiting block, 26. Positioning hole, 27. Connecting insertion hole, 3. Fixed shaft, 4. Elastic steel strip. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figures 1 to 7 As shown, a drive device for a Venetian blind cord reel in the first aspect of this utility model includes a housing 1, a rotating shaft 2, a fixed shaft 3, and an elastic steel strip 4. The rotating shaft 2 is rotatably installed inside the housing 1, and the fixed shaft 3 is installed inside the housing 1. The rotating shaft 2 and the fixed shaft 3 are spaced apart. The elastic steel strip 4 is wound around the fixed shaft 3, and one end of the elastic steel strip 4 is connected to the rotating shaft 2. A connection socket 27 is provided on the rotating shaft 2.

[0027] In the above embodiments, it should be noted that the elastic steel band 4 is an existing retractable spring with a certain elastic force. The end of the spring is connected to the drive shaft by means of snap-fit ​​or screw connection. During operation, the cord winder of the Venetian blind drives the rod of the pull cord to extend or shorten and insert it into the socket. The elastic force of the elastic steel band 4 is equal to the weight of the Venetian blind. When the Venetian blind is pulled down, a part of the elastic steel band 4 gradually winds around the rotating shaft 2. When the Venetian blind is lifted up, the elastic steel band 4 retracts to the fixed shaft 3. The length of the housing 1 is 31.5 mm, the width is 31.3 mm, and the height is 28 mm.

[0028] The technical effects achieved by the above embodiments are as follows: through the cooperative arrangement of the rotating shaft 2 and the elastic steel belt 4, when it is necessary to pull down the Venetian blinds, the blinds can be extended to the designated position simply by pulling them; if the Venetian blinds are to be suspended, as long as no external force is applied to the blinds, the elastic force of the steel belt and the weight of the blinds will reach a balance, thus achieving suspension; thereby realizing the lifting and lowering of the Venetian blinds without the need for a pull cord, which is convenient and quick, indirectly reducing the frequency of accidents, avoiding the wear and breakage of the pull cord due to long-term stress, reducing the probability of equipment failure, and reducing the frequency of maintenance and replacement.

[0029] Optional, such as Figures 1 to 7 As shown, in some embodiments, the rotating shaft 2 includes a main body rod 21, a turntable 22 and a rotating shaft part 24. A turntable 22 is provided at each end of the main body rod 21. A rotating shaft part 24 is provided on the side of each turntable 22 away from the main body rod 21. Both rotating shaft parts 24 are rotatably connected to the housing 1. One end of the elastic steel belt 4 is connected to the main body rod 21.

[0030] In the above optional embodiments, it should be noted that the connecting socket 27 passes through the main body rod 21, the turntable 22 and the rotating shaft 24; the shape of the connecting socket 27 is rectangular, and the cross-section of the rod inserted into the connecting socket 27 only needs to be a rectangular rod.

[0031] The advantages of the above optional embodiments are: by setting the turntable 22, the left and right limits of the rotating shaft 2 can be effectively implemented, ensuring that the rotating shaft 2 can only rotate.

[0032] Optional, such as Figures 1 to 7 As shown, in some embodiments, the rotating shaft 2 further includes a locking block 23, which is disposed on one side of the main body rod 21, and one end of the elastic steel strip 4 is connected to the locking block 23.

[0033] In the above optional embodiments, it should be noted that the elastic steel strip 4 is snapped onto the snap block 23. Specifically, the snapping method is to simply open a rectangular hole in the elastic steel strip 4 and then fit it onto the snap block 23; existing screw connection or other feasible snapping methods can also be used, which will not be discussed in detail here; the snap block 23 and the main body rod 21 are integrally formed.

[0034] The advantages of the above optional embodiments are that the setting of the locking block 23 increases the convenience of connecting the elastic steel belt 4 and the rotating shaft 2.

[0035] Optional, such as Figures 1 to 7 As shown, in some embodiments, the turntable 22 has a plurality of positioning holes 26 arranged in a circular array, and the side wall of the housing 1 has two limiting holes 14, and the distance between each pair of adjacent positioning holes 26 is equal to the distance between the two limiting holes 14.

[0036] The advantages of the above optional embodiments are as follows: the positioning holes 26 of the circumferential array of the turntable 22 are matched with the spacing of the two limiting holes 14 on the side wall of the housing 1, which can achieve precise positioning and angle adjustment of the turntable 22 through alignment. The spacing between adjacent positioning holes 26 is equal to the spacing between limiting holes 14, ensuring that the turntable 22 can be stably engaged when rotating, meeting the requirements for fixing multiple angles, improving operational accuracy, and at the same time, the structure is simple and facilitates quick switching of positioning states.

[0037] Optional, such as Figures 1 to 7 As shown, in some embodiments, the rotating shaft 2 further includes limiting blocks 25. Each turntable 22 has multiple limiting blocks 25 arranged in a circular array on the side opposite to the main body rod 21. The thickness of each limiting block 25 is less than the thickness of the rotating shaft portion 24.

[0038] Optional, such as Figures 1 to 7 As shown, in some embodiments, the housing 1 includes a main housing 11 and a side plate 12. The side plate 12 is detachably connected to the main housing 11. A rotating hole 13 is provided on the side wall of the main housing 11 away from the side plate 12 and on the side plate 12. Both ends of the rotating shaft 2 are rotatably inserted into the rotating hole 13. One end of the fixed shaft 3 is connected to the main housing 11, and the other end of the fixed shaft 3 is connected to the side plate 12.

[0039] In the above optional embodiments, it should be noted that the main shell 11 and the side plate 12 are connected by screws.

[0040] The advantages of the above optional embodiments are as follows: the main shell 11 and the side plate 12 are detachably connected, which facilitates the installation and maintenance of internal components. Both are provided with rotating holes 13 for the two ends of the rotating shaft 2 to rotate, and are connected to the main shell 11 and the side plate 12 with the fixed shaft 3, which not only ensures the stable rotation of the rotating shaft 2, but also enhances the overall structural strength of the shell 1.

[0041] Optional, such as Figures 1 to 7 As shown, in some embodiments, the housing 1 further includes a reinforcing member 16. The inner wall of the main housing 11 and one side of the side plate 12 are provided with reinforcing members 16, and the two reinforcing members 16 are respectively located at both ends of the fixed shaft 3.

[0042] The beneficial effect of the above optional embodiments is that the strength and stability of the housing 1 are increased by the setting of the reinforcing member 16.

[0043] Optional, such as Figures 1 to 7 As shown, in some embodiments, a first connecting rod 17 is also included. The side of the side plate 12 is connected to the first connecting rod 17, and a connecting slot 15 is provided on the main shell 11. The first connecting rod 17 is inserted into the connecting slot 15.

[0044] In the above optional embodiments, it should be noted that the first connecting rod 17 is connected to the side plate 12 by bonding or injection molding.

[0045] The advantages of the above optional embodiments are as follows: the insertion method of the first connecting rod 17 into the connecting slot 15 ensures connection stability and avoids loosening. At the same time, the positioning is accurate, ensuring the relative position of the side plate 12 and the main shell 11, which facilitates the alignment and installation of internal components and improves the reliability and maintenance convenience of the overall structure.

[0046] Optional, such as Figures 1 to 7 As shown, in some embodiments, a second connecting rod 18 is also included. The second connecting rod 18 is installed on one side of the side plate 12 and inserted into the fixed shaft 3.

[0047] In the above optional embodiments, it should be noted that the second connecting rod 18 is connected to the side plate 12 by bonding or injection molding.

[0048] The beneficial effects of the above optional embodiments are as follows: the second connecting rod 18 on one side of the side plate 12 is inserted into the fixed shaft 3, which further strengthens the connection between the side plate 12 and the main shell 11 and improves the overall structural stability of the shell 1.

[0049] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0050] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

Claims

1. A drive device for a Venetian blind cord reel, characterized in that, The device includes a housing (1), a rotating shaft (2), a fixed shaft (3), and an elastic steel strip (4). The rotating shaft (2) is rotatably installed inside the housing (1), and the fixed shaft (3) is installed inside the housing (1). The rotating shaft (2) and the fixed shaft (3) are spaced apart. The elastic steel strip (4) is wound around the fixed shaft (3). One end of the elastic steel strip (4) is connected to the rotating shaft (2). The rotating shaft (2) has a connection hole (27).

2. The drive device for a Venetian blind cord reel according to claim 1, characterized in that, The rotating shaft (2) includes a main rod (21), a turntable (22) and a rotating shaft part (24). A turntable (22) is provided at each end of the main rod (21). A rotating shaft part (24) is provided on the side of each turntable (22) away from the main rod (21). Both rotating shaft parts (24) are rotatably connected to the housing (1). One end of the elastic steel strip (4) is connected to the main rod (21).

3. The drive device for a Venetian blind cord reel according to claim 2, characterized in that, The rotating shaft (2) also includes a locking block (23), which is located on one side of the main body rod (21), and one end of the elastic steel strip (4) is connected to the locking block (23).

4. The drive device for a Venetian blind cord reel according to claim 2, characterized in that, The turntable (22) has multiple positioning holes (26) arranged in a circular array, and the side wall of the housing (1) has two limiting holes (14). The distance between each pair of adjacent positioning holes (26) is equal to the distance between the two limiting holes (14).

5. The drive device for a Venetian blind cord reel according to claim 2, characterized in that, The rotating shaft (2) also includes a limiting block (25). Each turntable (22) has multiple limiting blocks (25) arranged in a circular array on the side away from the main body rod (21). The thickness of each limiting block (25) is less than the thickness of the rotating shaft (24).

6. The drive device for a Venetian blind cord reel according to claim 1, characterized in that, The housing (1) includes a main shell (11) and a side plate (12). The side plate (12) is detachably connected to the main shell (11). The side wall of the main shell (11) away from the side plate (12) and the side plate (12) are both provided with rotating holes (13). The two ends of the rotating shaft (2) are respectively rotatably inserted into the rotating holes (13). One end of the fixed shaft (3) is connected to the main shell (11), and the other end of the fixed shaft (3) is connected to the side plate (12).

7. The drive device for a Venetian blind cord reel according to claim 6, characterized in that, The housing (1) also includes a reinforcing member (16). The reinforcing member (16) is provided on the inner wall of the main housing (11) and on one side of the side plate (12). The two reinforcing members (16) are located at both ends of the fixed shaft (3).

8. The drive device for a Venetian blind cord reel according to claim 7, characterized in that, It also includes a first connecting rod (17), the side of the side plate (12) is connected to the first connecting rod (17), the main shell (11) is provided with a connecting slot (15), and the first connecting rod (17) is inserted into the connecting slot (15).

9. A drive device for a Venetian blind cord reel according to claim 8, characterized in that, It also includes a second connecting rod (18), which is installed on one side of the side plate (12) and inserted into the fixed shaft (3).

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