Connecting device of pulling rope, lifting driving device of clothes airing machine and clothes airing machine

Abstract

The traction rope connecting device, the lifting driving device of the clothes airing machine and the clothes airing machine are used for being connected with a traction rope set and a frame body of the clothes airing machine, the traction rope set comprises two traction ropes arranged in the width direction of the frame body, connecting parts are arranged at the ends of the traction ropes, and connecting rods distributed in the width direction are arranged on the frame body and comprise connecting pieces. The connecting piece is rotatably connected with the middle of the connecting rod and is provided with a mounting groove for embedding the connecting parts of the two pulling ropes, and the rotating axis direction of the connecting piece is perpendicular to the arrangement direction of the two pulling ropes, so that when the clothes airing machine ascends and descends, the connecting piece rotates around the rotating axis and automatically balances the tension of the two pulling ropes. The safety and the reliability of the clothes airing machine can be improved.

Description

Technical Field

[0001] This utility model relates to the field of clothes drying racks, and in particular to a connecting device for a traction rope, a lifting drive device for a clothes drying rack, and a clothes drying rack. Background Technology

[0002] Traditional clothes drying racks typically use a fixed structure for their traction rope connection, such as directly fixing the traction rope to the frame with bolts or clips. This design has significant drawbacks during lifting: when the tension of the two traction ropes on one side becomes unbalanced due to frictional resistance or load differences, localized stress concentration occurs at the fixed connection point, causing the traction rope on the high-tension side to break prematurely due to mechanical fatigue, posing a serious safety hazard. Furthermore, existing solutions rely on manually adjustable telescopic structures, which cannot respond to tension changes in real time, and the rigid connection method makes disassembly and reassembly difficult after rope wear, further increasing maintenance costs.

[0003] Some improvement solutions attempt to enhance stability by employing damping adjustment structures or tension spring limiting structures, but limitations remain. For example, while damping adjustment structures can delay sudden tension changes, their adjustment response depends on a preset damping coefficient and cannot dynamically adapt to real-time load changes. Long-term use can lead to compensation failure due to aging or wear of the damping medium, and may even exacerbate local fatigue damage to the traction rope. Although locking devices can alleviate instantaneous impacts through passive spring tension, they lack automatic adjustment capabilities, and long-term use can still lead to slack or uneven stress on the traction rope. Utility Model Content

[0004] The main purpose of this invention is to overcome the problem caused by the tension imbalance of the two traction ropes on one side in existing clothes drying machines. It proposes a traction rope connecting device, a lifting drive device for the clothes drying machine, and a clothes drying machine that can automatically balance the tension of the two traction ropes on one side, thereby improving safety and reliability.

[0005] The present invention adopts the following technical solution:

[0006] A connecting device for traction ropes is provided for connecting the traction rope assembly and the frame of a clothes drying rack. The traction rope assembly includes two traction ropes arranged along the width of the frame. The ends of the traction ropes are provided with connecting parts. A connecting rod arranged along the width of the frame is provided, including a connector. The connector is rotatably connected to the middle of the connecting rod and is provided with an installation groove for the connecting parts of the two traction ropes to be inserted. The rotation axis of the connector is perpendicular to the arrangement direction of the two traction ropes, so that when the clothes drying rack is raised or lowered, the connector rotates around the rotation axis and automatically balances the tension of the two traction ropes.

[0007] The connector is provided with an integrally formed fixed or detachable rod body and a connecting block; the rod body is connected to the connecting rod; the connecting block is located at the end of the rod body and is provided with two mounting slots, which are located on both sides of the rod body respectively.

[0008] The connector is fixed relative to the rod body, while the rod body and the connecting rod are rotatably connected; or, the connecting block is rotatably connected to the rod body, while the rod body and the connecting rod are fixed.

[0009] The side wall of the mounting slot relative to the connecting rod is set as an opening to facilitate the insertion of the connecting part from the side. After the rod is inserted into the connecting part, the opening side of the mounting slot is closed by the corresponding side of the frame.

[0010] A lifting drive device for a clothes drying rack, used to drive the frame to lift, includes a drive group and two traction rope groups; one end of each of the two traction rope groups is connected to the drive group, and the other end of each of the two traction rope groups extends outward from both sides of the drive group along its length; it also includes a traction rope connecting device, wherein two connecting parts are rotatably connected to the middle of two connecting rods spaced apart along the length of the frame, and the other end of each of the two traction rope groups is detachably connected to the corresponding connecting parts.

[0011] It also includes two guide wheel sets, which are respectively arranged on both sides of the drive group along the length direction and are equipped with pulleys. The pulleys are located above the middle of the frame along the width direction and are equipped with two grooves. The ends of the two traction ropes of the traction rope set extend outward from the side of the drive group along the length direction to the grooves to change the direction of extension so as to connect with the connecting parts on the frame.

[0012] The ends of the two traction ropes of the traction rope group extend outward from both sides in the width direction of the drive group; the guide wheel group includes a first guide wheel, which is located above the end of the frame in the length direction; the two traction ropes of the traction rope group pass through the corresponding first guide wheel to bring them closer to each other.

[0013] The drive unit includes a motor unit and two winding wheel sets. One end of the traction rope is wound around the corresponding winding wheel set. The motor unit is connected to drive the winding wheel set to rotate, thereby driving the traction rope set to move.

[0014] The reel assembly has two reels; the two traction ropes of the traction rope assembly are wound one-to-one around the two reels of the reel assembly.

[0015] A clothes drying rack includes a frame, a main unit, and a telescopic assembly; the telescopic assembly is connected between the main unit and the frame, and the rack also includes a lifting drive device for the clothes drying rack, the drive assembly being installed on the main unit; the drive assembly drives the traction rope assembly and the telescopic assembly to move the frame relative to the main unit to rise or fall.

[0016] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0017] 1. In this utility model, a rotatable connector is provided to connect the frame and the traction rope assembly. The connector is provided with an installation groove to connect with the end of the traction rope, which can firmly clamp the two steel wire ropes and prevent them from loosening or falling off during use. The rotation axis of the connector is perpendicular to the arrangement direction of the two traction ropes, so that when the clothes drying rack is raised and lowered, the connector rotates around the rotation axis and automatically balances the tension of the two traction ropes, thereby improving safety and stability.

[0018] 2. In this utility model, the connector is provided with a rod and a connecting block. The rod and the connecting block can be rotatably connected to the connecting rod by various connection methods. The connecting block is connected to the rod and is provided with two symmetrical mounting slots opposite to the rod. The connector adopts this symmetrical structure that can rotate around the axis, which can ensure that the double traction ropes are evenly stressed and are not affected by the length of the traction ropes. Moreover, this locking mechanism simplifies the connection structure, reduces the number of parts, and not only improves the compactness and aesthetics of the overall structure, but also facilitates installation and maintenance.

[0019] 3. In this utility model, the traction rope assembly is provided with two traction ropes. The ends of the two traction ropes extend outward from the side plate in the length direction of the drive assembly to the frame and are detachably connected to the corresponding connecting parts. This ensures that the two traction ropes are subjected to force synchronously and are not affected by the length of the traction ropes. If one traction rope breaks, the other traction rope can continue to be subjected to force, ensuring that the frame is stable and does not tip over. This improves the durability of the overall structure. Due to the redundant design, the maintenance frequency caused by wire rope breakage is reduced, and the maintenance cost is reduced.

[0020] 4. In this utility model, a guide wheel assembly is set to guide the two traction ropes to extend towards each other and then connect to the middle part of the frame in the width direction. The guide wheel assembly includes a first guide wheel and a second guide wheel. By setting the first guide wheel and the second guide wheel, the outgoing direction of the traction rope is adjusted and the two are brought closer to each other in the extension direction to the upper part of the middle part of the frame in the width direction, so as to ensure the stability and reliability of the traction rope assembly transmission, reduce vibration and noise, and improve the user experience.

[0021] 5. In this utility model, the guide wheel group is also equipped with a pulley. The pulley is located above the middle part of the width direction of the frame and is provided with two sliding grooves. The two traction ropes of the traction rope group are respectively wrapped around the two sliding grooves, realizing the synchronous guidance and support of the two traction ropes. This not only improves the stability of the clothes rack, but also ensures the synchronicity of the two ropes when under force, avoiding safety hazards caused by uneven force on a single rope.

[0022] 6. In this utility model, two limiting members are also provided on the telescopic assembly. The two limiting members are respectively provided with limiting holes for the two traction rope assemblies to pass through, which plays a limiting role, reduces assembly steps, and reduces costs and increases efficiency. Attached Figure Description

[0023] Figure 1Here is a structural diagram of an existing clothes drying rack;

[0024] Figure 2 Here is a structural diagram of the existing connector;

[0025] Figure 3 The structure of the lifting drive device of this utility model Figure 1 ;

[0026] Figure 4 for Figure 3 Enlarged view of point A;

[0027] Figure 5 Here is a structural diagram of the connector;

[0028] Figure 6 Here is a diagram of the pulley structure;

[0029] Figure 7 This is a structural diagram of the end of the traction rope.

[0030] Figure 8 The structure of this utility model clothes drying rack Figure 1 ;

[0031] Figure 9 for Figure 8 Enlarged view of point B;

[0032] Figure 10 for Figure 8 Enlarged view of point C;

[0033] Figure 11 The structure of the lifting drive device of this utility model Figure 2 ;

[0034] Figure 12 This is a structural diagram of the first or second guide wheel;

[0035] Figure 13 The structure of this utility model clothes drying rack Figure 2 ;

[0036] Figure 14 This is an overall drawing of the clothes drying rack of this utility model;

[0037] Figure 15 Drive group structure diagram;

[0038] Figure 16 for Figure 15 A magnified view of a portion of the image;

[0039] Figure 17 This is a front view of another type of connector;

[0040] Figure 18 for Figure 17 Back view;

[0041] Figure 19 for Figure 17 Exploded view;

[0042] in:

[0043] 10. Drive assembly; 11. Micro switch; 12. Elastic rocker; 20. Frame; 21. Connecting rod; 22. Connector; 23. Rod body; 24. Connecting block; 25. Through hole; 26. Mounting groove; 30. Traction rope assembly; 31. Traction rope; 32. Connecting part; 40. Guide wheel assembly; 41. Second guide wheel; 42. First guide wheel; 43. Pulley; 44. Base; 45. Roller; 46. Slide groove; 47. Partition; 50. Main unit; 60. Telescopic assembly; 61. Limiting component; 62. Limiting hole. Detailed Implementation

[0044] The present invention will be further described below through specific embodiments. See also Figures 3-7 A connecting device for a traction rope includes a connector 22 for connecting a traction rope assembly 30 of a clothes drying rack and a frame 20. The traction rope assembly 30 includes two traction ropes 31 arranged along the width direction of the frame 20, with connecting portions 32 at their ends. The frame 20 is equipped with a drying rod and connecting rods 21 arranged along its width direction. The drying rod has hooks for hanging clothes, and the two connecting rods 21 are spaced apart along the length direction of the frame 20. The connector 22 is rotatably connected to the middle of the connecting rods 21 and has a mounting groove 26 for the connecting portions 32 of the two traction ropes 31 to be inserted. The rotation axis of the connector 22 is perpendicular to the arrangement direction of the two traction ropes 31, so that when the clothes drying rack is raised or lowered, the connector 22 rotates around the rotation axis and automatically balances the tension of the two traction ropes 31.

[0045] The mounting groove 26 is a recessed groove, and a through hole 25 is provided at the top of the mounting groove 26 for the traction rope 31 to pass through. The shape of the connecting part 32 of the traction rope 31 is adapted to the mounting groove 26. The connecting part 32 is embedded in the mounting groove 26 to connect the connecting piece 22 and the traction rope 31, which can firmly clamp the two wire ropes and prevent them from loosening or falling off during use. See also Figure 4 , Figure 5 and Figure 7 .

[0046] The connector 22 is provided with an integrally formed, fixed or detachably connected rod body 23 and a connecting block 24. The connecting rod 21 includes a first side wall and a second side wall, with a through hole in the middle of the first and second side walls. The rod body 23 passes through the through hole to connect to the connecting rod 21. The connecting block 24 is located at the end of the rod body 23 and is provided with two mounting grooves 26. The connecting block 24 can be located on the side where the first side wall of the connecting rod 21 is located. The two mounting grooves 26 are respectively located on both sides of the rod body 23, that is, the two mounting grooves 26 are symmetrically arranged relative to the rod body 23. The connecting parts 32 of the two traction ropes 31 of the traction rope assembly 30 are respectively embedded in the corresponding mounting grooves 26.

[0047] Specifically, depending on the connection method between the rod 23 and the connecting block 24, the connecting piece 22 and the connecting rod 21 can be connected in different rotatable ways. For example, the rod 23 can be inserted through the through hole of the connecting rod 21 to be rotatably connected to the connecting rod 21. The connecting block 24 and the end of the rod 23 can be relatively fixed by integral molding or screw fastening. See [reference needed]. Figures 17 to 19 Alternatively, the connecting block 24 is rotatably connected to one end of the rod 23, and the other end of the rod 23 passes through a through hole in the connecting rod 21 and is fixed to the connecting rod 21 by screws. See [reference needed]. Figure 4 and Figure 9 .

[0048] Furthermore, one side of the first sidewall of the mounting groove 26 relative to the connecting rod 21 is provided with an opening to facilitate the insertion of the connecting part 32 from the side. After the rod 23 is inserted into the connector 22, the open side of the mounting groove 26 is closed by the corresponding side of the frame 20. The connector 22 adopts this symmetrical, rotatable structure, which ensures that the double traction ropes 31 are subjected to uniform force, unaffected by the length of the traction ropes 31. This locking mechanism simplifies the connection structure, reduces the number of parts, and not only improves the compactness and aesthetics of the overall structure, but also facilitates installation and maintenance.

[0049] See Figures 8-14 This utility model discloses a clothes drying rack, comprising a frame 20, a main unit 50, a lifting drive device, and a telescopic assembly 60. The frame 20 is equipped with drying rods and connecting rods 21, etc., and the drying rods have hooks for hanging clothes. The main unit 50 is located above the frame 20, and the telescopic assembly 60 is connected between the connecting rods 21 of the main unit 50 and the frame 20 and is extendable. The lifting drive device is used to drive the frame 20 to rise or fall; when the main unit 50 rises or falls, it drives the telescopic assembly 60 to retract or extend.

[0050] Based on this, the present invention also proposes a lifting drive device for a clothes drying rack, including a drive group 10, two traction rope groups 30, and two connecting members 22 as described above. One end of each of the two traction rope groups 30 is connected to the drive group 10, and the other end of each traction rope group 30 extends outward from both sides along the length of the drive group 10. The two traction rope groups 30 can extend outward along the length of the drive group 10. The connecting members 22 adopt the aforementioned traction rope connecting device, and the two connecting members 22 are rotatably connected to the two connecting rods 21 on the frame 20. The ends of the two traction ropes 31 of the traction rope groups 30 extend outward from the side plates along the length of the drive group 10 to the frame 20 and are detachably connected to the corresponding connecting members 22. The traction ropes 31 can be made of steel wire rope, and the connecting members 22 adopt a rotatable connection structure to ensure that both traction ropes 31 are subjected to force synchronously and are not affected by the length of the traction ropes 31. If one traction rope 31 breaks, the other traction rope 31 can continue to be subjected to force, ensuring that the frame 20 is stable and does not tip over.

[0051] In this embodiment, the drive group 10 can be implemented using an existing drive structure, such as a motor group and two reel groups. One end of the traction rope 31 of the traction rope group 30 is wound around the corresponding reel group. The motor group is connected to drive the reel groups to rotate, thereby driving the traction rope group 30 to move. Specifically, the reel group can be one reel or two reels. The two traction ropes 31 of the traction rope group 30 are wound around one reel or respectively wound around two reels. The motor group can be one motor or two motors. One motor can drive the two reel groups to rotate through a gear transmission structure, or two motors can drive the two reel groups to rotate through gear transmission structures, etc. The specific configuration can be set according to the actual situation and is not limited here.

[0052] In this embodiment, two guide wheel sets 40 are also included. The two guide wheel sets 40 are respectively arranged on both sides of the drive group 10 along its length and are spaced apart from the drive group 10. The two guide wheel sets 40 are symmetrically arranged relative to the drive group 10. See also Figure 3 Each of the two guide wheel groups 40 is provided with a pulley 43. The axis of rotation of the pulley 43 extends along the width direction of the drive group 10. The pulley 43 is used to change the extension direction of the traction rope 31 of the traction rope group 30, so that its extension direction changes from along the length direction of the drive group 10 to perpendicular to the length direction of the drive group 10 and extends toward the frame 20.

[0053] Specifically, pulley 43 is located above the center of the frame 20 in the width direction and has two grooves 46. The two traction ropes 31 of the traction rope assembly 30 are respectively wound around the two grooves 46, realizing synchronous guidance and support for the two traction ropes 31. This not only improves the stability of the clothes rack but also ensures the synchronicity of the two ropes under force, avoiding safety hazards caused by uneven force on a single rope. See also Figure 3The two traction ropes 31 of the traction rope group 30 can extend outward from the middle of the drive group 10 in the width direction to the pulley 43 and then be connected to the connector 22.

[0054] The guide wheel assembly 40 can also be implemented in other forms. For example, one method is to add a first guide wheel 42 to the existing pulleys. The first guide wheel 42 is located above the end of the frame 20 in the length direction. The two traction ropes 31 of the traction rope assembly 30 pass through the corresponding first guide wheels 42 to bring them closer together. Another method is to add two second guide wheels 41 to the existing pulleys and first guide wheels. The two second guide wheels 41 are located between the drive assembly 10 and the first guide wheel 42 and are spaced apart along the width direction of the drive assembly. The two traction ropes 31 of the traction rope assembly 30 pass through the corresponding second guide wheels 41 and then through the first guide wheels 42 to extend towards each other. With these two methods, the two traction ropes 31 of the traction rope assembly 30 extend outward from both sides of the drive assembly 10 in the width direction. Two cable outlets are provided on both sides of the drive assembly 30 in the width direction for the traction ropes 31 to pass through.

[0055] For example, using the third method: See Figure 11 Two second guide wheels 41 are spaced apart along the width direction of the drive group 10, and the first guide wheel 42 and the second guide wheel 41 are spaced apart along the length direction of the drive group 10, with the first guide wheel 42 located on the side of the second guide wheel 41 away from the drive group 10. The two traction ropes 31 pass through the corresponding second guide wheels 41 and then through the first guide wheel 42 to extend towards each other. By setting the second guide wheels 41 and the first guide wheels 42, the exit direction of the traction ropes 31 is adjusted and they are brought closer to each other in the extension direction to the upper part of the middle of the width direction of the frame 20, ensuring the stability and reliability of the transmission of the traction rope group 30.

[0056] The second guide wheel 41 and the first guide wheel 42 may have the same or different structures; taking them as examples of being the same, see [link to relevant documentation]. Figure 5 and Figure 9Both the second guide wheel 41 and the first guide wheel 42 include a base 44 and two rollers 45. The base 44 is fixed. The two rollers 45 are rotatably mounted on the base 44 and spaced apart along the width direction of the drive assembly 10. The rollers 45 are rotatable relative to the base 44, and their axes of rotation are perpendicular to both the length and width directions of the drive assembly 10. A partition 47 is also provided on the base 44 to separate the two rollers 45, i.e., the partition 47 is located between the two rollers 45, making the base 44 resemble an I-beam. There is a gap between the partition 47 and the rollers 45. The gap between one of the rollers 45 of the second guide wheel 41 and the partition 47 allows one of the traction ropes 31 of the traction rope assembly 30 to pass through. The gaps between the two rollers 45 of the first guide wheel 42 and the partition 47 allow both traction ropes 31 of the traction rope assembly 30 to pass through, thereby shortening the distance between the two traction ropes 31 in the width direction of the drive assembly 10. In other embodiments, the second guide wheel 41 has a different structure from the first guide wheel 42. The second guide wheel 41 may only include a partition and a roller 45, or the second guide wheel may be a fixed pulley.

[0057] In this embodiment, the guide wheel assembly 40 uses a second guide wheel 41, a first guide wheel 42, and a pulley 43. The base 44 of the second guide wheel 41 and the first guide wheel 42 is fixed to the main unit 50, and the pulley 43 is rotatably connected to the main unit 50. By adjusting the direction of the traction rope 31 and precisely aligning it with the groove 46 of the pulley 43, the stability and reliability of the transmission connection between the drive assembly 10 and the frame 20 are ensured, effectively reducing the vibration and noise levels during operation.

[0058] The drive unit 10 can be implemented using an existing drive structure, such as a motor unit and two reel sets. One end of the traction rope 31 of the traction rope unit 30 is wound around the corresponding reel set. The motor unit is connected to drive the reel sets to rotate, thereby actuating the traction rope unit 30. Specifically, the reel set can be one or two reels, and the two traction ropes 31 of the traction rope unit 30 can be wound around one reel or separately around two reels. The motor unit can be one or two motors, with one motor driving the two reel sets to rotate through a gear transmission structure, or two motors driving the two reel sets to rotate separately through gear transmission structures, etc. The specific configuration can be determined according to the actual situation and is not limited here.

[0059] In addition, the clothes drying rack has a gentle lifting function. The cable outlet of the drive unit 10 is equipped with spaced microswitches and elastic rockers. The elastic rockers have holes for the traction rope to pass through. The microswitches close when touched by the elastic rockers. When the frame 20 is gently lifted and lowered, the traction rope 31 changes from a taut state to a relaxed state and then back to a taut state. The microswitches change from open to closed and then open again. The microswitches trigger the frame 20 to rise during this closing and opening process, thus achieving the gentle lifting function. The two second guide wheels 41 further ensure that the traction rope 31, when exiting the cable outlet of the drive unit 10, will not accidentally touch the elastic rockers, thus affecting the microswitches' function. See [link to relevant documentation]. Figure 15 and Figure 16 .

[0060] The telescopic assembly 60 can be implemented using a scissor lift structure, a telescopic rod structure, or a folding rod structure. Taking the scissor lift structure as an example, it includes two scissor lifts spaced apart along the length of the frame 20. One end of each scissor lift is connected to the main unit 50, and the other end is connected to the frame 20. Two connecting rods 21 are provided on the frame 20 to connect to the two scissor lifts respectively, and these two connecting rods 21 are located near the two ends along the length of the frame 20. Two traction rope assemblies 30 are connected to the two connecting rods 21 one-to-one. Two connecting pieces 22 are connected to the middle of the connecting rods 21, and the opening of the connecting block 24 is closed by the corresponding side of the connecting rod 21, so that the ends of the two traction ropes 31 of the traction rope assembly 30 are connected to the corresponding connecting pieces 22, ensuring that the frame 20 remains stable. When the frame 20 rises, the telescopic assembly 60 retracts; when the frame 20 descends, the telescopic assembly 60 unfolds.

[0061] In this embodiment, two limiting members 61 are also included. The two limiting members 61 are respectively disposed on opposite sides of the two scissor lifts and have limiting holes 62. The two traction rope groups 30 pass through the corresponding limiting holes 62. The limiting members 61 are located near the middle of both ends of the scissor lifts. They can be fixed to the scissor lifts by welding or threading steel wires to form the limiting holes 62. The number of limiting holes 62 on the limiting member 61 can be one or two. If there is one, the two traction ropes 31 of the traction rope group 30 pass through the same limiting hole 62; if there are two, the two traction ropes 31 of the traction rope group 30 pass through the two limiting holes 62 respectively. During the assembly of the transmission device of this utility model, the two traction ropes 31 of the traction rope group 30 passing through the limiting holes 62 serve a limiting function, reducing assembly steps and increasing efficiency.

[0062] When the clothes rack of this utility model is in operation, the two traction rope groups 30 are connected to the frame through two traction ropes 31 respectively, and the guide wheel group 40 precisely guides the movement direction of the traction ropes 31, so that the force is concentrated in the middle of the frame 20, thereby ensuring the stability and reliability of the connection and allowing the frame 20 to rise and fall smoothly. If any traction rope 31 in the traction rope group 30 breaks due to fatigue from long-term use or other factors, the other traction rope 31 in the traction rope group 30 can still independently bear the load, ensuring that the frame 20 will not suddenly fall and avoid accidents. At the same time, this design allows the clothes rack to continue to be used for a period of time after the traction rope 31 breaks, giving users time for repair and replacement, further improving safety and practicality.

[0063] The terms "first" and "second" used in this utility model are merely for ease of description and to distinguish different components with the same name, and do not indicate a sequential or primary / secondary relationship.

[0064] In the description of this utility model, the orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "front" and "back" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model.

[0065] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0066] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A connecting device for a traction rope, used to connect a traction rope assembly and a frame of a clothes drying rack, wherein the traction rope assembly includes two traction ropes arranged along the width direction of the frame, the ends of the traction ropes are provided with connecting portions, and the frame is provided with connecting rods arranged along the width direction, characterized in that: The device includes a connector that is rotatably connected to the middle of the connecting rod and has a mounting groove for the connecting parts of the two traction ropes to be embedded in. The rotation axis of the connector is perpendicular to the arrangement direction of the two traction ropes, so that when the clothes drying machine is raised or lowered, the connector rotates around the rotation axis and automatically balances the tension of the two traction ropes.

2. The connecting device for a traction rope as described in claim 1, characterized in that: The connector is provided with an integrally formed fixed or detachably connected rod and a connecting block; the rod is connected to the connecting rod; the connecting block is located at the end of the rod and is provided with two mounting slots, which are respectively located on both sides of the rod.

3. The connecting device for a traction rope as described in claim 2, characterized in that: The connector is fixed relative to the rod body, and the rod body is rotatably connected to the connecting rod; or, the connecting block is rotatably connected to the rod body, and the rod body is fixed to the connecting rod.

4. The connecting device for a traction rope as described in claim 2, characterized in that: The mounting groove has an opening on the side wall opposite to the connecting rod, which facilitates the insertion of the connecting part from the side. After the rod is inserted into the connecting part, the opening side of the mounting groove is closed by the corresponding side of the frame.

5. A lifting drive device for a clothes drying rack, used to drive the frame to lift, comprising a drive group and two traction rope groups; one end of each of the two traction rope groups is connected to the drive group, and the other ends of each of the two traction rope groups extend outward from both sides of the drive group along its length; characterized in that: It also includes a traction rope connection device according to any one of claims 1 to 4, wherein the two connecting members are rotatably connected to the middle of the two connecting rods spaced apart along the length of the frame, and the other ends of the two traction rope groups are detachably connected to the corresponding connecting members.

6. The lifting drive device for a clothes drying rack as described in claim 5, characterized in that: It also includes two guide wheel sets, which are respectively arranged on both sides of the drive group along its length and are each provided with a pulley. The pulleys are located above the middle of the frame in the width direction and are provided with two grooves. The ends of the two traction ropes of the traction rope group extend outward from the side of the drive group along its length direction to the grooves to change the direction of extension so as to connect with the connectors on the frame.

7. The lifting drive device for a clothes drying rack as described in claim 6, characterized in that: The two ends of the traction ropes of the traction rope group extend outward from both sides in the width direction of the drive group; the guide wheel group includes a first guide wheel, which is located above the end of the frame in the length direction; the two traction ropes of the traction rope group pass through the corresponding first guide wheel to bring them closer to each other.

8. The lifting drive device for a clothes drying rack as described in claim 5, characterized in that: The drive unit includes a motor unit and two reel sets. One end of each traction rope is wound around a corresponding reel set. The motor unit drives the reel sets to rotate, thereby moving the traction rope sets.

9. The lifting drive device for a clothes drying rack as described in claim 8, characterized in that: The reel assembly has two reels; the two traction ropes of the traction rope assembly are wound one-to-one around the two reels of the reel assembly.

10. A clothes drying rack, comprising a frame, a main unit, and a telescopic assembly; the telescopic assembly is connected between the main unit and the frame, characterized in that: It also includes a lifting drive device for a clothes drying rack according to any one of claims 5 to 9, wherein the drive group is installed on the main unit; the drive group drives the traction rope group and the telescopic group to move, thereby causing the frame to rise or fall relative to the main unit.

Images