Sunshade awning with elastic speed difference self-compensation

Abstract

A sunshade curtain with speed difference self-compensation through elasticity, a motor, a transmission rod, an elastic member, a damper, a cloth winding pipe and a chain wheel are arranged on a main machine, the motor is in transmission connection with the transmission rod, the chain wheel is arranged on the transmission rod, a chain is arranged on a guide rail, the chain is connected with the chain wheel and a traction rod respectively, the traction rod is driven to move through cooperation of the chain and the chain wheel, one end of the elastic member is fixed on the transmission rod, the other end is fixed on the cloth winding pipe through the damper, and a curtain is connected with the traction rod and the cloth winding pipe respectively. In the sunshade curtain, the motor does not directly drive the cloth winding pipe to rotate, the cloth winding pipe rotates asynchronously with the transmission rod under the action of the damper and the elastic member, speed difference self-compensation is realized by using the asynchronous rotation, so that the curtain always keeps compact during the unfolding or winding process, in addition, the tightening structure of the sunshade curtain does not depend on the structure of the edge woven belt combined with the elastic rope, and the service life and reliability of the product can be significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of sunshade awning technology, and in particular to a sunshade awning that uses elasticity to compensate for speed differences. Background Technology

[0002] Sunshade canopies, as a common outdoor sunshade device, are widely used in courtyards, terraces, commercial plazas, and other places. Their basic structure typically includes a fabric roll tube, a canopy, guide rails, a traction rod, and a drive unit with a built-in motor. During operation, the motor drives the fabric roll tube to rotate, causing the canopy to unfold or retract along the guide rails, thus achieving the sunshade function.

[0003] However, the traditional retraction structure of sunshade canopies has the following significant problems:

[0004] I. Mismatch between Retraction and Untraction Speeds and Flatness Issues: During the curtain retraction and untraction process, the diameter of the curtain wound on the roll tube continuously changes, causing a difference between the linear speed of the curtain retraction and untraction and the linear speed of the tightening mechanism used to tension the curtain, i.e., a speed difference exists. This speed mismatch makes it difficult for the curtain to maintain sufficient tension when unfolded and it cannot be tightly and flat when rolled up, directly affecting the sunshade effect and aesthetic appearance;

[0005] II. Reliability Issues of the Tightening Mechanism: Traditional sunshade awnings often rely on a structure combining edge webbing and elastic ropes for their tightening mechanism. These materials are highly susceptible to aging, embrittlement, or breakage when exposed to outdoor environments (wind, sun, rain) for extended periods, leading to tightening failure and significantly reducing the product's lifespan and reliability. Utility Model Content

[0006] To address the aforementioned technical problems, this invention provides a sunshade canopy that uses elasticity for speed difference self-compensation. In this sunshade canopy, the motor does not directly drive the fabric roll tube to rotate, but instead drives a transmission rod to move on a guide rail. During the movement of the transmission rod, the fabric roll tube rotates through the canopy, and the fabric roll tube rotates asynchronously with the transmission rod under the action of a damper and an elastic element. This asynchronous rotation achieves speed difference self-compensation, thus ensuring that the canopy remains taut during unfolding or rewinding. Furthermore, the tightening structure of this sunshade canopy does not rely on the structure of the edge webbing combined with elastic ropes, which can significantly improve the product's service life and reliability.

[0007] To achieve the above objectives, the present invention provides a sunshade canopy with self-compensation for speed difference through elasticity, comprising a main unit, guide rails, traction rods, and a canopy. The guide rails are respectively disposed on the left and right sides of the main unit, and the traction rod is movably disposed between the left and right guide rails. The main unit is equipped with a motor, a transmission rod, an elastic element, a damper, a fabric rolling tube, and a sprocket. The motor is connected to the transmission rod for transmission, and the sprocket is disposed on the transmission rod. A chain is disposed on the guide rails, and the chain is respectively connected to the sprocket and the traction rod. The traction rod is moved by the cooperation of the chain and the sprocket. One end of the elastic element is fixed to the transmission rod, and the other end is fixed to the fabric rolling tube through the damper. The canopy is respectively connected to the traction rod and the fabric rolling tube.

[0008] As a further improvement of this utility model, the fabric roll tube is movably sleeved on the transmission rod, and a bearing is provided between the fabric roll tube and the transmission rod; the elastic element is a compression spring, which is movably sleeved on the transmission rod and located between the fabric roll tube and the transmission rod; the damper is movably sleeved on the transmission rod and located between the fabric roll tube and the transmission rod.

[0009] As a further improvement of this utility model, it also includes a toothed sleeve and a pin. The toothed sleeve is fixed on the fabric roll tube and has retaining teeth. The sprocket has a pin hole and the pin is detachably inserted through the pin hole and engaged with the retaining teeth of the toothed sleeve.

[0010] As a further improvement of this utility model, the motor is a tubular motor, the transmission rod is arranged on the left and right sides of the motor, and a sprocket connecting tube is also included. The sprocket connecting tube is movably sleeved on the right side of the motor and connected to the transmission rod on the left side. There are two sprockets, which are respectively arranged at the left end of the left transmission rod and the right end of the right sprocket connecting tube.

[0011] As a further improvement of this utility model, it also includes a motor mounting base, an active end connector, and a passive end connector. The right end of the main unit is provided with a motor socket. The rotor end of the tubular motor is inserted into the main unit housing through the motor socket. The fixed end of the tubular motor is fixed to the motor mounting base. The motor mounting base is detachably installed at the motor socket. The active end connector is provided at the rotor end of the tubular motor. The passive end connector is provided at the end of the transmission rod. The active end connector and the passive end connector are detachably connected together.

[0012] As a further improvement of this utility model, the active end connector and the passive end connector are respectively provided with grooves, and the active end connector and the passive end connector are detachably connected together by the interlocking of the grooves.

[0013] As a further improvement of this utility model, it also includes a fastening screw. The outer periphery of the motor socket is provided with a screw hole, and the motor mounting base is detachably installed at the motor socket by the cooperation of the fastening screw and the screw hole.

[0014] As a further improvement of this utility model, a groove is provided on the guide rail along its length direction, a connecting seat is provided on the traction rod, a pulley is provided on the connecting seat, and the pulley is movably mounted on the groove; a reversing wheel is provided at the other end of the guide rail relative to the sprocket, the chain is wound in a ring around the sprocket and the reversing wheel, and the chain is connected to the connecting seat to drive the connecting seat to move.

[0015] As a further improvement of this utility model, the connecting seat is movably provided with a first adjusting member and a second adjusting member, the two ends of the chain are respectively connected to the first adjusting member and the second adjusting member, and an adjusting screw is provided between the first adjusting member and the second adjusting member. The distance between the first adjusting member and the second adjusting member can be adjusted by turning the adjusting screw.

[0016] As a further improvement of this utility model, the traction rod includes a curtain connector and a traction member. The curtain is connected to the curtain connector. The upper and lower sides of the curtain connector are respectively provided with connecting holes and hook grooves. The upper and lower sides of the traction member are respectively provided with screw holes and hooks. The lower sides of the curtain connector and the traction member are detachably fastened together by the cooperation of the hook grooves and hooks. The upper sides of the curtain connector and the traction member are connected together by screws.

[0017] The beneficial effects of this utility model are as follows:

[0018] I. The sunshade canopy described in this utility model achieves automatic compensation for speed difference through a unique transmission structure design, thereby ensuring that the canopy is taut and flat. Specifically, the motor drives the transmission rod to drive the sprocket and chain structure, which in turn drives the traction rod to move along the guide rail. When the traction rod moves, it pulls the canopy, thereby indirectly driving the fabric roll tube to rotate. That is, the motor does not directly drive the fabric roll tube to rotate. On this basis, the fabric roll tube achieves a non-rigid connection with the transmission rod through the cooperation of elastic elements and dampers, that is, asynchronous rotation. This structure can compensate for the speed difference between the linear speed of the fabric roll tube and the linear speed of the traction rod caused by the change of the canopy roll diameter on the fabric roll tube in real time and automatically. Thus, the canopy is always kept taut during the entire unfolding and rewinding process, effectively eliminating slack and wrinkles, and significantly improving the flatness and appearance of the canopy.

[0019] Second, the sunshade canopy described in this utility model abandons the traditional tightening structure that relies on edge webbing and elastic ropes. Instead, the tensioning function of the canopy can be achieved by utilizing the aforementioned speed difference self-compensation structure itself. This eliminates the use of easily aging materials such as elastic ropes and edge webbing, significantly reducing the risk of component aging and failure due to wind and sun exposure, and effectively improving the overall reliability and service life of the product. Attached Figure Description

[0020] Figure 1 This is a breakdown diagram of the overall structure of the sunshade canopy;

[0021] Figure 2 This is a schematic diagram of the overall structure of the sunshade canopy;

[0022] Figure 3 This is a split diagram showing the connection between the transmission rod and the fabric winding tube;

[0023] Figure 4 This is a schematic diagram showing the connection between the transmission rod and the fabric winding tube;

[0024] Figure 5 This is a schematic diagram of a pin connection;

[0025] Figure 6 Schematic diagram of the connection between the motor and the transmission rod;

[0026] Figure 7 This is a schematic diagram showing the connection between the guide rail and the traction rod;

[0027] Figure 8 This is a schematic diagram of the connector structure;

[0028] Figure 9 This is a schematic diagram of the traction rod structure;

[0029] Labeling descriptions: Main unit 1, Motor 11, Motor mounting base 111, Motor socket 112, Active end connector 113, Passive end connector 114, Groove 115, Groove 116, Transmission rod 12, Elastic element 13, Damper 14, Fabric roll tube 15, Bearing 151, Toothed sleeve 152, Clamping tooth 1521, Sprocket 16, Pin hole 161, Sprocket connecting tube 17, Pin 18, Guide rail 2, Chain 21, Slide groove 22, Reversing wheel 23, Traction rod 3, Connecting seat 31, Pulley 32, First adjusting element 33, Second adjusting element 34, Adjusting screw 35, Curtain connector 36, Hook groove 361, Traction element 37, Hook 371, Screw 372, Curtain 4. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0031] like Figure 1 , 2As shown, a sunshade canopy with self-compensating speed difference through elasticity includes a main unit 1, guide rails 2, traction rods 3, and a canopy 4. Two guide rails 2 are provided, one on the left and one on the right of the main unit 1, forming a U-shaped structure with the main unit 1. The traction rods 3 are movably disposed between the left and right guide rails 2, used to drive the canopy 4 to move back and forth along the length of the guide rails 2.

[0032] The main unit 1 is equipped with a motor 11, a transmission rod 12, an elastic element 13, a damper 14, a fabric winding tube 15, a sprocket 16, and a sprocket connecting tube 17. The motor 11 is a tubular motor 11.

[0033] The transmission rod 12 is positioned on the left and right sides of the motor 11, and the two are connected by a transmission mechanism, with the motor 11 driving the transmission rod 12 to rotate. The sprocket connecting pipe 17 is movably sleeved on the right side of the motor 11 and connected to the left side of the transmission rod 12. As the transmission rod 12 rotates, the sprocket connecting pipe 17 rotates accordingly. Two sprockets 16 are provided, one at the left end of the left transmission rod 12 and the other at the right end of the right sprocket connecting pipe 17.

[0034] Each guide rail 2 is equipped with a chain 21, and each chain 21 is connected to the corresponding sprocket 16 and the corresponding end of the traction rod 3. When the transmission rod 12 rotates, the traction rod 3 is driven to move back and forth along the length of the guide rail 2 through the cooperation of the chain 21 and the sprocket 16.

[0035] like Figure 3 , 4 As shown, the fabric roll tube 15 is movably sleeved on the transmission rod 12. A bearing 151 is provided between the fabric roll tube 15 and the transmission rod 12, providing a non-rigid connection between them. The elastic element 13 is a compression spring, movably sleeved on the transmission rod 12 and located between the fabric roll tube 15 and the transmission rod 12. The damper 14 is movably sleeved on the transmission rod 12 and located between the fabric roll tube 15 and the transmission rod 12. One end of the elastic element 13 is fixed to the transmission rod 12, and the other end is fixedly connected to the fabric roll tube 15 via the damper 14.

[0036] The front and rear ends of the curtain 4 are connected to the traction rod 3 and the roll tube 15, respectively. As the traction rod 3 moves back and forth, the curtain 4 is unfolded and rolled up, and the curtain 4 drives the roll tube 15 to rotate.

[0037] In the above structure, the motor 11 does not directly drive the fabric roll tube 15 to rotate, but instead drives the transmission rod 12 to move on the guide rail 2. During the movement of the transmission rod 12, the fabric roll tube 15 is rotated through the curtain 4. The fabric roll tube 15 rotates asynchronously with the transmission rod 12 under the action of the damper 14 and the elastic element 13. This asynchronous rotation achieves speed difference self-compensation, ensuring that the curtain 4 remains taut during unfolding or rewinding. Furthermore, the tightening structure of this sunshade awning does not rely on the structure of the edge webbing combined with elastic ropes, significantly improving the product's service life and reliability. Moreover, by optimizing the arrangement of the transmission rod 12, motor 11, fabric roll tube 15, elastic element 13, and damper 14, the space utilization between components is improved, reducing the size of the main unit 1.

[0038] like Figure 5 As shown, the system further includes a toothed sleeve 152 and a pin 18. The toothed sleeve 152 is fixed to the fabric roll tube 15. The bearing 151 between the fabric roll tube 15 and the transmission rod 12 is mounted on the toothed sleeve 152. The toothed sleeve 152 has locking teeth 1521, and the sprocket 16 has a pin hole 161. The pin 18 is detachably inserted through the pin hole 161 and engaged with the locking teeth 1521 of the toothed sleeve 152. When maintenance of the sunshade awning is required, the pin 18 can be inserted into the pin hole 18 and engaged with the locking teeth 1521 of the toothed sleeve 152 to lock the transmission rod 12 and the fabric roll tube 15 together.

[0039] like Figure 6As shown, the system further includes a motor mounting base 111, an active end connector 113, and a passive end connector 114. A motor insertion hole 112 is provided at the right end of the main unit 1. The rotor end of the tubular motor 11 is inserted into the housing of the main unit 1 through the motor insertion hole 112. The fixed end of the tubular motor 11 is fixed to the motor mounting base 111. Screw holes are provided on the outer periphery of the motor insertion hole 112. The motor mounting base 111 is detachably installed at the motor insertion hole 112 by the engagement of fastening screws with the screw holes. The active end connector 113 is located at the rotor end of the tubular motor 11, and the passive end connector 114 is located at the end of the transmission rod 12. The active end connector 113 and the passive end connector 114 are respectively provided with grooves 115 and 116. The active end connector 113 and the passive end connector 114 are detachably connected together by the interlocking of the grooves 115 and 116. The detachable installation method of the motor mounting bracket 111 and the quick-connect design of the active end connector 113 and the passive end connector 114 allow the motor 11 to be installed and removed independently without disassembling the entire transmission system, greatly improving maintenance convenience and offering significant advantages such as quick installation and removal and low maintenance costs. The sprocket connecting tube 17 is connected to the passive end connector 114 and is sleeved on the outside of the tubular motor 11. The rotation of the transmission rod 12 can drive the rotation of the sprocket connecting tube 17, and the tubular motor 11 is not affected by the sprocket connecting tube 17 during disassembly.

[0040] like Figure 7 As shown, the connection structure between the guide rail 2 and the traction rod 3 is further as follows: a groove 22 is provided on the guide rail 2 along its length direction; connecting seats 31 are provided on the left and right sides of the traction rod 3; pulleys 32 are provided on the connecting seats 31, and the pulleys 32 are movably mounted on the groove 22, thereby allowing the traction rod 3 to move on the guide rail 2. A reversing wheel 23 is provided at the other end of the guide rail 2 relative to the sprocket 16; the chain 21 is wound in a ring around the sprocket 16 and the reversing wheel 23, and the chain 21 is connected to the connecting seat 31 to drive the connecting seat 31 to move. Through the ring winding of the chain 21, the forward and reverse rotation of the chain 21 can make the traction rod 3 move back and forth, thereby realizing the unfolding and rewinding of the curtain 4.

[0041] like Figure 8 As shown, furthermore, a first adjusting member 33 and a second adjusting member 34 are movably disposed on the connecting seat 31 through the cooperation of a strip groove and a screw. There is a gap between the first adjusting member 33 and the second adjusting member 34. When the chain 21 is wound in a ring, it has an opening, with both ends of the opening connected to the first adjusting member 33 and the second adjusting member 34 respectively. An adjusting screw 35 is disposed between the first adjusting member 33 and the second adjusting member 34. By turning the adjusting screw 35, the distance between the first adjusting member 33 and the second adjusting member 34 can be adjusted. The chain 21 is prone to loosening after prolonged use; the above-described adjustment structure allows for the adjustment of the tension of the chain 21.

[0042] like Figure 9 As shown, the traction rod 3 further includes a curtain connector 36 and a traction member 37. The curtain 4 is connected to the curtain connector 36. The upper and lower sides of the curtain connector 36 are respectively provided with connecting holes and hook grooves 361. The upper and lower sides of the traction member 37 are respectively provided with screw holes and hooks 371. The lower sides of the curtain connector 36 and the traction member 37 are detachably fastened together by the cooperation of the hook grooves 361 and hooks 371. The upper sides of the curtain connector 36 and the traction member 37 are connected together by screws 372 at the connecting holes and screw holes. The above structure enables quick disassembly of the traction rod 3 and the curtain 4, which facilitates the subsequent disassembly and maintenance of both and ensures the stability of their connection. When maintaining the fabric rolling mechanism or replacing parts, the upper screws 372 can be removed to separate the traction rod 3 from the curtain 4 without disassembling the connection between the traction rod 3 and the guide rail 2, which greatly reduces the maintenance difficulty and time cost.

[0043] When the aforementioned sunshade canopy leaves the factory, the transmission rod 12 is fixed in position due to the restriction of the motor 11. At this time, by first rotating the fabric rolling tube 15, the position of the transmission rod 12 and the fabric rolling tube 15 can be changed, and the elastic element 13 will deform, thereby setting the elastic force value of the elastic element 13 in advance. Then, the canopy 4 is connected to the traction rod 3 to fix the position and fix the preset elastic force value.

[0044] When the sunshade canopy is activated, motor 11 drives transmission rod 12 to rotate, which in turn drives sprockets 16 at both ends to rotate synchronously. Sprockets 16 and the ring chain 21 are rigidly connected. Transmission rod 12 drives sprockets 16 and the ring chain 21 to transmit power, and the ring chain 21 pulls traction rod 3 to move back and forth along guide rail 2. The back and forth movement of traction rod 3 achieves the unfolding and rewinding of the canopy. During the unfolding and rewinding process, the canopy 4 drives the roll tube 15 to rotate passively, thus achieving the unfolding and rewinding. During the rotation of the fabric roll tube 15, the elastic element 13 and the damper 14 work together to drive the fabric roll tube 15 to roll and unroll the fabric using a preset elastic value. It can also compensate for the speed difference between the fabric roll tube 15 and the traction rod 3 caused by the change in the diameter of the curtain 4 on the fabric roll tube 15 in real time and automatically. At the same time, the preset elastic value can tighten the curtain. During the unfolding and rewinding of the curtain 4, the curtain 4 is always kept in a taut state, thereby effectively eliminating looseness and wrinkles, and significantly improving the flatness and appearance of the curtain 4.

[0045] The above-described embodiments are merely illustrative of this utility model. Any equivalent embodiments made by those skilled in the art without departing from the technical features disclosed in this utility model, and without departing from the technical features of this utility model, shall still fall within the scope of the technical features of this utility model.

Claims

1. A sunshade canopy with self-compensation for speed difference through elasticity, comprising a main unit, guide rails, traction rods, and a canopy, wherein the guide rails are respectively disposed on the left and right sides of the main unit, and the traction rods are movably disposed between the left and right guide rails, characterized in that: The main unit is equipped with a motor, a transmission rod, an elastic element, a damper, a fabric rolling tube, and a sprocket. The motor is connected to the transmission rod, the sprocket is mounted on the transmission rod, and a chain is mounted on the guide rail. The chain is connected to the sprocket and the traction rod, and the traction rod is moved by the cooperation of the chain and the sprocket. One end of the elastic element is fixed to the transmission rod, and the other end is fixed to the fabric rolling tube by the damper. The curtain is connected to the traction rod and the fabric rolling tube.

2. A sunshade screen self-compensating for speed difference by elasticity according to claim 1, characterized in that: The fabric roll tube is movably sleeved on the transmission rod, and a bearing is provided between the fabric roll tube and the transmission rod; the elastic element is a compression spring, which is movably sleeved on the transmission rod and located between the fabric roll tube and the transmission rod; the damper is movably sleeved on the transmission rod and located between the fabric roll tube and the transmission rod.

3. A sunshade screen self-compensating for speed difference by elasticity according to claim 1, characterized in that: It also includes a toothed sleeve and a pin. The toothed sleeve is fixed on the fabric roll tube and has retaining teeth. The sprocket has a pin hole and the pin can be detachably inserted through the pin hole and engaged with the retaining teeth of the toothed sleeve.

4. A sunshade screen self-compensating for speed difference by elasticity according to claim 1, characterized in that: The motor is a tubular motor. The transmission rod is arranged on the left and right sides of the motor. It also includes a sprocket connecting tube. The sprocket connecting tube is movably sleeved on the right side of the motor and connected to the transmission rod on the left side. There are two sprockets. The two sprockets are respectively located at the left end of the left transmission rod and the right end of the right sprocket connecting tube.

5. A sunshade screen self-compensating for speed difference by elasticity according to claim 4, characterized in that: It also includes a motor mounting base, an active end connector, and a passive end connector. The right end of the main unit is provided with a motor socket. The rotor end of the tubular motor is inserted into the main unit housing through the motor socket. The fixed end of the tubular motor is fixed to the motor mounting base. The motor mounting base is detachably installed at the motor socket. The active end connector is located at the rotor end of the tubular motor. The passive end connector is located at the end of the transmission rod. The active end connector and the passive end connector are detachably connected together.

6. A sunshade screen self-compensating for speed difference by elasticity according to claim 5, characterized in that: The active end connector and the passive end connector are respectively provided with grooves, and the active end connector and the passive end connector are detachably connected together by the interlocking of the grooves.

7. A sunshade screen self-compensating for speed difference by elasticity according to claim 5, characterized in that: It also includes fastening screws, and the outer periphery of the motor socket is provided with screw holes. The motor mounting bracket is detachably installed at the motor socket by the cooperation of the fastening screws and the screw holes.

8. A sunshade screen self-compensating for speed difference by elasticity according to claim 1, characterized in that: The guide rail has a groove along its length, the traction rod has a connecting seat, the connecting seat has a pulley, and the pulley is movably mounted on the groove; the guide rail has a reversing wheel at the other end relative to the sprocket, the chain is wound in a ring around the sprocket and the reversing wheel, and the chain is connected to the connecting seat to drive the connecting seat to move.

9. A sunshade screen self-compensating for speed difference by elasticity according to claim 7, characterized in that: The connecting seat is movably provided with a first adjusting member and a second adjusting member. The two ends of the chain are respectively connected to the first adjusting member and the second adjusting member. An adjusting screw is provided between the first adjusting member and the second adjusting member. The distance between the first adjusting member and the second adjusting member can be adjusted by turning the adjusting screw.

10. A sunshade screen self-compensating for speed difference by elasticity according to claim 1, characterized in that: The traction rod includes a curtain connector and a traction component. The curtain is connected to the curtain connector. The curtain connector has a connecting hole and a hook groove on its upper and lower sides, respectively. The traction component has a screw hole and a hook on its upper and lower sides, respectively. The lower sides of the curtain connector and the traction component are detachably fastened together by the cooperation of the hook groove and the hook. The upper sides of the curtain connector and the traction component are connected together by screws.

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