Louver rod fitting structure

Abstract

The utility model relates to a louver pull rod cooperation structure, including a plurality of louver and drive unit, one side of drive unit is provided with synchronous wheel, and synchronous wheel is driven connection with louver, and the rotatable setting of synchronous wheel has connecting rod link sleeve, and connecting rod link sleeve can displace with the rotation of synchronous wheel, still include a long connecting rod, and long connecting rod penetrates the same side connecting rod link sleeve, and drive connection a plurality of louvers through the cooperation of connecting rod link sleeve, the utility model's purpose lies in, provide a kind of louver pull rod cooperation structure with high transmission synchronism, stable operation, required drive torque is small and reliable structure, solve the technical problem that current louver pull rod cooperation structure technology is unstable, and production cost is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of outdoor sunshade products, and particularly relates to the structure of louvered rods. Background Technology

[0002] Existing louvered awnings typically employ a structure where a main drive rod links multiple driven rotary transmission components to achieve the translation and rotation of the louvers, thereby enabling actions such as unfolding, retracting, and angle adjustment. For example, Chinese utility model patent CN219671902U, entitled "Rotary and Telescopic Louvered Awning," discloses a typical structure comprising several columns, a horizontal base plate, a vertical base plate, and louvers. Connecting rods are located at both ends of the louvers, connecting them to a base plate frame composed of the horizontal and vertical base plates. This structure also includes a louver rotation drive mechanism and a louver movement drive mechanism, wherein the louver rotation drive mechanism includes a main rotation drive component, a main drive rod, and driven rotary transmission components.

[0003] However, the aforementioned existing structure has several technical drawbacks in practical applications. First, it uses a hexagonal cross-section main drive rod to engage with a rotary transmission component with hexagonal holes. This connection method is prone to bending deformation of the drive rod under long-term load, which affects the transmission accuracy of moving parts and may even cause system failure. Second, due to the large span of the drive rod, there is a problem of asynchronous response among the various transmission components during movement. It often occurs that the near-end louver has completed its action while the far-end louver has not yet responded, seriously affecting the overall coordination and performance of the product. Furthermore, this structure relies on the torque of the main drive rod to drive the opening and closing of the louvers. To overcome internal friction and achieve multi-blade linkage, a large torque output is required, placing higher demands on the drive components and increasing energy consumption.

[0004] On the other hand, there are also technical solutions on the market that use X-shaped hinge linkage mechanisms to drive rotary transmission components. However, in this type of structure, the hinge intersection is a stress concentration area, which is prone to fatigue damage under frequent start-stop and alternating loads, resulting in reduced reliability and shortened service life. At the same time, the complex structure also leads to increased manufacturing costs. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a louvered rod mating structure that features high transmission synchronization, smooth operation, low required driving torque, and reliable structure.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a louvered rod mating structure, including multiple louvered blades and a drive unit. A synchronous wheel is provided on one side of the drive unit, and the synchronous wheel is connected to the louvered blades in a transmission manner. A connecting rod sleeve is rotatably provided on the synchronous wheel, and the connecting rod sleeve can be displaced accordingly with the rotation of the synchronous wheel. It also includes a long connecting rod, which passes through the connecting rod sleeve on the same side and is connected to the multiple louvered blades in a transmission manner through the mating with the connecting rod sleeve.

[0007] Preferably, the connecting rod sleeve is provided with a connecting hole for the long connecting rod to pass through, and the upper and lower ends of the connecting rod sleeve are provided with limiting parts, and the limiting parts are provided with a safety mechanism for cooperating with the long connecting rod for limiting.

[0008] Preferably, the safety mechanism includes a spring-loaded ball structure movably disposed within the limiting portion, and the long connecting rod has a positioning hole that cooperates with the spring-loaded ball structure.

[0009] Preferably, the limiting part is provided with a through groove communicating with the connecting hole. The spring retaining ball structure includes a spring disposed in the through groove and a retaining ball disposed at the end of the spring. When the long connecting rod is installed into the connecting rod connecting sleeve, the retaining ball is pressed into the through groove. When the retaining ball is aligned with the positioning hole, the spring pushes the retaining ball to engage in the positioning hole.

[0010] Preferably, the connecting rod sleeve is arranged on the outer surface of the synchronous pulley and is positioned at a position other than 90° or 180° from the pulley center.

[0011] Preferably, a mounting hole is provided on one side of the synchronous pulley, and a plug-in part for inserting into the mounting hole is provided on the side of the connecting rod connecting sleeve near the synchronous pulley. The plug-in part is rotatably engaged with the mounting hole, and the other end of the plug-in part is used to fix the connecting rod connecting sleeve by a fastener.

[0012] Preferably, the drive unit is provided with a rotating shaft, and the two ends of the rotating shaft are respectively connected to the synchronous pulley and the louver.

[0013] Preferably, the synchronous pulley is connected to a drive mechanism via a transmission belt. The drive mechanism drives the synchronous pulley to rotate, causing the connecting rod sleeve to rotate on the synchronous pulley and pull the long connecting rod.

[0014] Preferably, the drive unit is movably disposed within the crossbeams, and several crossbeams form a frame. Multiple louvers are disposed within the frame. The drive mechanism drives the synchronous wheel to rotate, and the connecting rod sleeve pulls the long connecting rod, thereby causing the drive unit to move along the extension direction of the crossbeams, realizing the unfolding or retraction of the louvers.

[0015] Preferably, a switching mechanism is further provided between the drive mechanism and the synchronous pulley. The switching mechanism is used to control the lateral movement or rotation of the louvers through the cooperation of the connecting rod sleeve and the long connecting rod.

[0016] Compared with existing technologies, this invention offers the following advantages through the above technical solution: A long connecting rod running through all the connecting sleeves uniformly converts the rotational motion of the synchronous wheel into the linear displacement of multiple louvers. This rigid linkage mechanism ensures precise synchronous movement of all louvers during unfolding and retraction, effectively solving the problem of delayed end-response caused by excessive length and deflection deformation in traditional transmission rods. Furthermore, this structure utilizes the lever principle of the synchronous wheel and connecting rod to efficiently convert the rotational motion of the drive unit into linear traction on the long connecting rod. This transmission method saves effort, significantly reducing the torque required to drive the louvers, thus allowing the use of a lower-power, lower-cost drive motor, achieving energy saving and consumption reduction. Simultaneously, the cooperation between the synchronous wheel and the connecting sleeve avoids the force concentration points present in traditional X-shaped hinge linkage mechanisms. The uniform force distribution on each component greatly reduces the risk of fatigue damage and improves the mechanical durability and long-term operational reliability of the entire system. In summary, the above method solves the technical problems of unstable louver tie rod mating structures and high manufacturing costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 A magnified structural diagram of point A; Figure 3 This is a top view of the overall structure of this utility model; Figure 4 For the present utility model Figure 3 A partially enlarged structural diagram; Figure 5 This is a side view of the connection structure of each drive unit of this utility model; Figure 6 This is a schematic diagram of the connection structure between the drive unit and the louvers of this utility model. Figure 7This is a schematic diagram of the unfolded louvers of this utility model; Figure 8 This is a schematic diagram of the louvered blades in the flipped state of this utility model; Figure 9 This is a schematic diagram of the closed state of the louvers of this utility model; Figure 10 This is a schematic diagram of the connecting sleeve structure of this utility model; Figure 11 This is a cross-sectional view of the connecting sleeve of this utility model; Figure 12 This is a schematic diagram of the rotating shaft connection structure of this utility model; The utility model reference information is as follows: 1. Crossbeam; 2. Drive unit; 3. Louver; 203. Rotating shaft; 204. Synchronous pulley; 205. Connecting rod sleeve; 206. Long connecting rod; 207. Limiting part; 208. Positioning hole; 209. Through groove; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figure 1-12 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] like Figure 1-12As shown: The louvered lever-coupling structure includes multiple regularly arranged louvered blades 3 and a drive unit 2 that provides power to these blades. A synchronous pulley 204 is provided on one side of the drive unit 2, and the synchronous pulley 204 is connected to the louvered blades 3 through a transmission. A connecting rod sleeve 205 is rotatably mounted on the synchronous pulley 204. The connecting rod sleeve 205 can be displaced accordingly with the rotation of the synchronous pulley 204. It also includes a long connecting rod 206, which passes through the connecting rod sleeve 205 on the same side. Through the cooperation with the connecting rod sleeve 205, multiple louvered blades 3 are connected through a transmission. The above structure integrates the dispersed drive units into a linkage whole through a rigid long connecting rod 206, forming a mechanical structure with high synchronization, thereby avoiding the problem of asynchronous movement caused by traditional independent drive or flexible transmission.

[0023] like Figure 2-6 As shown in Figures 10-11: The connecting rod sleeve 205 is provided with a connecting hole for the long connecting rod 206 to pass through. The upper and lower ends of the connecting rod sleeve 205 are provided with a limiting part 207, which is integrated or separate. The limiting part 207 is provided with a safety mechanism for limiting the long connecting rod 206. By setting the safety mechanism, the reliability and accuracy of the connection between the long connecting rod 206 and the connecting rod sleeve 205 are ensured. The design of the limiting part 207 and the built-in safety mechanism not only provides the necessary motion guidance, but also adds a layer of safety redundancy. This ensures that the long connecting rod and the transmission kit will not separate under long-term vibration or accidental external force interference, thereby improving the safety and durability of the system.

[0024] like Figure 10-11 As shown, the safety mechanism includes a spring-loaded ball structure movably disposed within the limiting part 207. A positioning hole 208 is provided on the long connecting rod 206 to mate with the spring-loaded ball structure. Specifically, the spring-loaded ball structure is movably disposed within the internal space of the limiting part 207. Correspondingly, positioning holes 208, matching the number and action points of the spring-loaded balls, are pre-machined at corresponding axial positions on the long connecting rod 206. These positioning holes can be blind holes or through holes, and their diameter is adapted to the ball-loaded ball structure.

[0025] like Figure 11 As shown: The limiting part 207 is provided with a through groove 209 that communicates with the connecting hole. The spring retaining ball structure includes a spring 210 provided in the through groove 209 and a retaining ball 211 provided at the end of the spring 210. When the long connecting rod 206 is installed into the connecting rod connecting sleeve 205, the retaining ball 211 is pressed into the through groove 209. When the retaining ball 211 is aligned with the positioning hole 208, the spring 210 pushes the retaining ball 211 into the positioning hole 208.

[0026] The spring-loaded ball joint is a simple, reliable, and cost-effective mechanical locking solution that is currently in use. It provides a clear tactile feedback when the parts are in place, while the continuous clamping force of the spring 210 prevents the long connecting rod 206 from moving unintended axially within the sleeve, thus ensuring the accuracy of the transmission position.

[0027] To more clearly illustrate its working mechanism, the limiting part 207 has a through groove 209 that communicates with the connecting hole. The spring-loaded ball structure specifically consists of a spring 210 housed within the through groove 209 and a ball 211 located at the end of the spring, partially protruding from the through groove. During assembly, the long connecting rod 206 is inserted into the connecting hole, its outer surface pressing against the ball 211, causing it to retract completely into the through groove 209 against the spring force. When the long connecting rod 206 moves until its positioning hole 208 aligns with the ball 211, the preload of the spring 210 is released, pushing the ball 211 out partially and locking it into the positioning hole 208, forming a mechanical interlock.

[0028] like Figure 5-9 As shown, the connecting sleeve 205 is disposed on the outer circumference of the synchronous pulley 204, and the line connecting its center to the center of the synchronous pulley forms a predetermined angle with the horizontal reference line. The connecting sleeve 205 is not located at the conventional 90° or 180° position, but is preferably arranged at an angle of 45° or 50° between the line connecting the pulley centers and the horizontal direction. Simultaneously, when the synchronous pulley 204 is in the starting and stopping states, the connecting sleeve 205 on it is always at this angled position. This installation angle can provide a better horizontal component force to the connecting sleeve during the rotation of the synchronous pulley, thereby more efficiently converting rotational motion into horizontal linear motion. This structure not only improves transmission efficiency but also significantly reduces the starting torque and running torque requirements of the drive motor. At the same time, the reasonable arrangement enhances the mechanism's horizontal constraint capability and suppresses unnecessary displacement of the long connecting rod 206.

[0029] like Figure 10-11 As shown: A mounting hole is provided on one side of the synchronous pulley 204. The connecting rod sleeve 205, near the synchronous pulley 204, has a plug-in part 212 for insertion into the mounting hole. The plug-in part 212 rotatably engages with the mounting hole, and the other end of the plug-in part 212 is axially fixed by fasteners such as nuts or retaining rings to prevent it from falling off while ensuring free rotation. This plug-in and fastening connection method is simple in structure, easy to assemble, and reliable in connection. It simplifies the complex motion relationship between the connecting rod sleeve and the synchronous pulley into a pure revolute pair, reducing unnecessary constraints and internal forces, making motion transmission smoother and more fluid.

[0030] like Figure 12As shown: The drive unit 2 is equipped with a rotating shaft 203. The two ends of the rotating shaft 203 are connected to the synchronous pulley 204 and the louver 3 respectively. Specifically, one end may be coaxial with the synchronous pulley or connected through gears, while the other end directly or indirectly drives the louver 3 to rotate. Through the built-in rotating shaft, the transmission path of the synchronous pulley's motion to the louver's rotational motion is integrated, making the drive unit a fully functional independent module, which is convenient for standardized production, modular assembly, and maintenance and replacement.

[0031] like Figure 4 As shown: The synchronous pulley 204 is connected to a drive mechanism via a transmission belt. In this embodiment, the drive mechanism is a drive motor. The drive motor and the synchronous pulley 204 are connected by a synchronous belt. The drive mechanism drives the synchronous pulley 204 to rotate, causing the connecting rod sleeve 205 to rotate on the synchronous pulley and pull the long connecting rod 206.

[0032] like Figure 12 As shown: The drive unit 2 is movably mounted inside the crossbeam 1. Several crossbeams 1 form a frame, and multiple louvers 3 are located within the frame. The drive mechanism drives the synchronous wheel 204 to rotate, which in turn causes the connecting sleeve 205 to pull the long connecting rod 206, thereby moving the drive unit 2 along the extension direction of the crossbeam 1, realizing the unfolding or retraction of the louvers 3. Specifically, the entire drive unit 2 is constrained in a pre-set guide rail or groove inside the crossbeam 1, allowing it to slide freely along the extension direction of the crossbeam 1. Several crossbeams 1 together form a rigid frame for mounting the louvers. When the drive mechanism pulls or pushes the long connecting rod 206 through the synchronous wheel 204 and the connecting sleeve 205, all drive units 2 fixed to the long connecting rod 206 move synchronously along the crossbeam, thereby causing the louvers 3 fixed on it to collectively unfold (disperse) or retract (converge).

[0033] This design enables uniform lateral movement of the louvers, resulting in smooth, highly synchronized movement and excellent visual appeal. Integrating all moving parts within the crossbeam enhances the product's clean and aesthetically pleasing appearance while protecting the mechanism from environmental damage.

[0034] A switching mechanism is also provided between the drive mechanism and the synchronous pulley 204. This switching mechanism, through the cooperation of the connecting sleeve 205 and the long connecting rod 206, controls the lateral movement or rotation of the louvers 3. The introduction of this switching mechanism allows a single drive system to perform two distinct functions (movement and rotation), greatly simplifying the system structure and reducing costs. Users can control the extension and retraction of the awning and adjust its light transmission using a single controller, enhancing the product's intelligence and user experience.

[0035] The working principle of this utility model is as follows: The drive motor drives all the synchronous pulleys 204 to rotate synchronously via a synchronous belt. When the synchronous pulleys 204 rotate, the eccentrically positioned connecting sleeves 205 are constrained by the rigid long connecting rod 206 due to their circumferential motion, thus converting the rotational motion into a horizontal pulling or pushing force on the entire drive unit 2. Since all the connecting sleeves 205 of the drive units 2 are threaded onto the same long connecting rod 206, the displacement of the first drive unit 2 is instantly and forcibly transmitted to all subsequent units through this rigid rod, thereby achieving completely synchronous unfolding or retracting movements of all the louvers 3 without any delay.

[0036] When the user needs to adjust the tilt angle of the louvers, the controller commands the switching mechanism to disconnect the power connection between the motor and the synchronous pulley 204, and connect the motor to the rotating shaft 203. At this time, the motor power directly drives the rotating shaft 203, thereby causing the louvers 3 to rotate around their own axis, achieving angle adjustment. In this mode, the synchronous pulley 204 and the long connecting rod 206 system remain stationary, and the position of the louvers remains unchanged.

[0037] In summary, this utility model, by setting up a synchronous wheel, a connecting sleeve, and a long connecting rod, efficiently and with low loss converts rotational motion into linear motion, and uses a rigid long connecting rod to achieve forced synchronous drive of all louvers, thus solving many drawbacks of traditional technology. It is particularly suitable for large-span, high-requirement sunshade application scenarios.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A louvered rod mating structure, comprising multiple louvered blades (3) and a drive unit (2), characterized in that: A synchronous wheel (204) is provided on one side of the drive unit (2). The synchronous wheel (204) is connected to the louver blade (3) for transmission. A connecting rod sleeve (205) is rotatably provided on the synchronous wheel (204). The connecting rod sleeve (205) can be displaced accordingly with the rotation of the synchronous wheel (204). It also includes a long connecting rod (206). The long connecting rod (206) passes through the connecting rod sleeve (205) on the same side and is connected to multiple louver blades (3) through the cooperation with the connecting rod sleeve (205).

2. The louvered tie rod mating structure according to claim 1, characterized in that: The connecting sleeve (205) is provided with a connecting hole for the long connecting rod (206) to pass through. The upper and lower ends of the connecting sleeve (205) are provided with limiting parts (207). The limiting parts (207) are provided with a safety mechanism for cooperating with the long connecting rod (206) for limiting.

3. The louvered tie rod mating structure according to claim 2, characterized in that: The insurance mechanism includes a spring-loaded ball structure movably disposed within the limiting part (207), and the long connecting rod (206) is provided with a positioning hole (208) that cooperates with the spring-loaded ball structure.

4. The louvered tie rod mating structure according to claim 3, characterized in that: The limiting part (207) is provided with a through groove (209) that communicates with the connecting hole. The spring ball structure includes a spring (210) provided in the through groove (209) and a ball (211) provided at the end of the spring (210). When the long connecting rod (206) is installed in the connecting rod connecting sleeve (205), the ball (211) is pressed into the through groove (209). When the ball (211) is aligned with the positioning hole (208), the spring (210) pushes the ball (211) into the positioning hole (208).

5. The louvered tie rod mating structure according to claim 1, characterized in that: The connecting rod sleeve (205) is arranged on the outer surface of the synchronous pulley (204) and is located at a position that is neither 90° nor 180° from the wheel center.

6. The louvered tie rod mating structure according to claim 1, characterized in that: The synchronous pulley (204) has a mounting hole on one side. The connecting rod sleeve (205) has a plug part (212) for inserting into the mounting hole on the side near the synchronous pulley (204). The plug part (212) is rotatably engaged with the mounting hole, and the other end of the plug part (212) is used to fix the connecting rod sleeve (205) by a fastener.

7. The louvered tie rod mating structure according to claim 1, characterized in that: The drive unit (2) is provided with a rotating shaft (203), and the two ends of the rotating shaft (203) are respectively connected to the synchronous wheel (204) and the louver (3).

8. The louvered tie rod mating structure according to claim 1, characterized in that: The synchronous pulley (204) is connected to a drive mechanism via a transmission belt. The drive mechanism drives the synchronous pulley (204) to rotate, causing the connecting rod sleeve (205) to rotate on the synchronous pulley and pull the long connecting rod (206).

9. The louvered tie rod mating structure according to claim 8, characterized in that: The drive unit (2) is movably disposed inside the crossbeam (1). Several crossbeams (1) form a frame, and multiple louvers (3) are disposed inside the frame. The drive mechanism drives the synchronous wheel (204) to rotate, and then the connecting rod link sleeve (205) pulls the long connecting rod (206), thereby causing the drive unit (2) to move along the extension direction of the crossbeam (1) to realize the unfolding or retraction of the louvers (3).

10. The louvered tie rod mating structure according to claim 8, characterized in that: A switching mechanism is also provided between the drive mechanism and the synchronous wheel (204). The switching mechanism is used to control the lateral movement or rotation of the louver (3) through the cooperation of the connecting sleeve (205) and the long connecting rod (206).

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