Anti-falling bracket structure and clothes airing machine

Abstract

This invention relates to a fall-prevention bracket structure and a clothes drying rack. The fall-prevention bracket structure of this invention includes: a bracket body, which is pulled up and down by a traction rope; a folding frame with a slider slidably connected to the bracket body; and a fall-prevention mechanism disposed on the bracket body. One end of the fall-prevention mechanism is rotatably connected to the bracket body, and the other end is connected to the traction rope. When the traction rope is taut, the fall-prevention mechanism disengages from the slider; when the traction rope is slack or breaks, the fall-prevention mechanism abuts against and brakes the slider. The fall-prevention bracket structure of this invention, by setting a fall-prevention mechanism synchronously pulled by a traction rope, ensures that when the steel wire rope suddenly breaks or encounters resistance and slackens, the fall-prevention mechanism loses the traction force of the traction rope, thereby triggering braking, thus stopping the relative movement of the folding frame and the bracket body and preventing the bracket body from falling, improving safety performance.

Description

Technical Field

[0001] This invention relates to the field of clothes drying racks, and in particular to an anti-fall bracket structure and a clothes drying rack. Background Technology

[0002] Electric clothes drying racks, as a modern household appliance, have gradually become the preferred equipment for drying clothes on balconies in many families due to their convenience and efficiency. They typically consist of a main unit, drying rods, a bracket, and core components such as steel cables connecting the main unit and the bracket, and a folding frame. The working principle of an electric clothes drying rack is that the traction of the steel cables raises or lowers the drying rods and brackets, thus achieving the purpose of folding up or lowering them. Simultaneously, the folding frame, acting as a support and guiding mechanism, is slidably connected to the main unit and bracket, utilizing its unfolding and retracting characteristics to ensure the stability of the bracket during the raising and lowering process.

[0003] However, in actual use, the steel wire rope of an electric clothes drying rack is susceptible to corrosion due to prolonged exposure to the outdoor environment, including changes in air humidity, temperature, and chemical substances. This can lead to fatigue and aging of the rope due to repeated loads. These changes significantly reduce the rigidity of the wire rope and weaken its load-bearing capacity. If the wire rope suddenly breaks for these reasons, the bracket and drying rod will instantly lose their traction and, under their own weight, are prone to tilting or even falling rapidly. This could not only cause personal injury to the operator below the drying rack but also potentially cause unpredictable damage to surrounding property, posing a significant safety hazard. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a fall-prevention bracket structure. By setting a fall-prevention mechanism that is synchronously pulled by a traction rope, when the wire rope suddenly breaks, the fall-prevention mechanism loses the traction force of the traction rope, thereby triggering braking, thereby stopping the relative movement of the folding frame and the bracket body and preventing the bracket body from falling, thus improving safety performance.

[0005] Another objective of this invention is to provide a clothes drying rack equipped with a fall-prevention bracket structure that is pulled and triggered by a traction rope, which has high braking sensitivity and improves the safety performance of the clothes drying rack.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fall arrestor structure, comprising:

[0008] The main body of the bracket is raised and lowered by a traction rope;

[0009] The folding frame is equipped with a slider that is slidably connected to the main body of the bracket;

[0010] A fall arrest mechanism is provided on the bracket body, with one end of the fall arrest mechanism rotatably connected to the bracket body and the other end connected to the traction rope;

[0011] When the traction rope is taut, the fall protection mechanism disengages from the slider; when the traction rope is slack or broken, the fall protection mechanism abuts against and brakes the slider.

[0012] Furthermore, the fall protection mechanism is provided with a braking component and a limiting component, the limiting component being fixedly connected to the bracket body;

[0013] One end of the braking component is rotatably connected to the bracket body, and the other end of the braking component is deflected by the traction rope and abuts against the limiting component.

[0014] Furthermore, the fall arrestor is also provided with an elastic element, which is located at the deflection end of the braking element, with one end connected to the braking element and the other end connected to the limiting element or the bracket body.

[0015] Alternatively, the elastic element is located at the rotating end of the braking element, with one end connected to the braking element and the other end connected to the bracket body.

[0016] Furthermore, the slider is provided with a braking part;

[0017] The brake member has a protruding first rack on its end face facing the brake part. When the brake member deflects downward, the first rack engages with the brake part to brake the slider.

[0018] Furthermore, the slider is provided with a load-reducing groove, and the braking part is made of stainless steel and is located in the load-reducing groove.

[0019] Furthermore, the braking part is configured as a second rack protruding towards the first rack, wherein the tooth height of the first rack is less than or equal to the tooth height of the second rack.

[0020] Furthermore, the ratio of the tooth height of the first rack to the tooth height of the second rack is 1:1.

[0021] Furthermore, the tooth height of the first rack and the tooth height of the second rack are greater than or equal to 3 mm.

[0022] Furthermore, the first rack includes a plurality of spaced-apart first helical teeth, each of which is inclined from the tooth base to the tooth tip toward the rotating end of the brake member;

[0023] The braking part is configured as a second rack protruding towards the first rack. The second rack includes a plurality of spaced second helical teeth, each of which is inclined from the tooth bottom to the tooth top toward the deflection end of the braking element.

[0024] Furthermore, a first guide tooth surface is formed on the side of the first helical tooth near the deflection end of the brake member, and the tip surface of the first helical tooth is connected to the first guide tooth surface through a first guide surface.

[0025] The second helical tooth has a second guide tooth surface formed on the side near the rotating end of the brake member, and the tip surface of the second helical tooth is connected to the second guide tooth surface through a second guide surface.

[0026] Furthermore, a first limiting tooth surface is formed on the side of the first helical tooth near the rotating end of the brake member, and the first rack is also formed with a connecting surface for connecting each of the first helical teeth.

[0027] The included angle between the first guide tooth surface and the connecting surface is set to 105°-110°, and the included angle between the first limiting tooth surface and the connecting surface is set to 75°-80°.

[0028] Furthermore, the ratio of the pitch of any two adjacent first helical teeth to the width of the second helical teeth is set to 2:1.

[0029] Furthermore, in the event of slack or breakage of the traction rope, the following condition is satisfied between the brake and the slider: F = mv / t;

[0030] Where F is the instantaneous impact force of the braking component and the slider, m is the mass of the braking component, v is the falling speed of the braking component, t is the action time, and F is less than or equal to 500N.

[0031] Furthermore, the tooth height of the second rack increases progressively from the end of the bracket body to the center.

[0032] Furthermore, the braking part is disposed on the upper end face of the slider, the first rack is disposed on the bottom surface of the braking member, and the orthographic projections of the first rack and the braking part on the horizontal plane at least partially overlap, so that the braking part is inserted into the tooth groove of the first rack from the tooth height direction and meshes with the first rack.

[0033] Furthermore, the braking component includes a first segment and a second segment, one end of the first segment is rotatably connected to the bracket body, the other end of the first segment is connected to the second segment, and the first rack is disposed on the first segment;

[0034] The second segment is connected to the first segment via a transition section and is offset from the first segment on a horizontal plane, so that the brake element is located on one side of the second segment and forms a clearance portion, and the folding frame is at least partially located in the clearance portion.

[0035] Furthermore, the tooth height of the first rack increases progressively from the end of the bracket body to the center.

[0036] Furthermore, the braking part is disposed on the side of the slider, and the first rack is disposed on the side wall of the braking member facing the braking part. When the braking member deflects downward, the braking part is inserted into the tooth groove of the first rack from the tooth width direction and meshes with the first rack.

[0037] Furthermore, the length of the first rack covers the sliding trajectory of the braking part.

[0038] Furthermore, under the traction of the traction rope, the braking component forms a horizontal angle of 3°-10° with the main body of the bracket.

[0039] Furthermore, under the traction of the traction rope, the braking component forms a horizontal angle greater than or equal to 6° with the main body of the bracket.

[0040] A clothes drying rack, comprising:

[0041] The anti-fall bracket structure as described in this invention.

[0042] The beneficial effects of this invention are as follows:

[0043] Based on the anti-fall bracket structure, which uses the contact braking design between the anti-fall mechanism and the slider, the anti-fall mechanism is triggered at the moment the traction rope loosens or breaks, which greatly shortens its braking response time. This allows the bracket body to be quickly stopped from falling further when the slider is braked, thus improving the safety performance of the clothes drying rack.

[0044] The fall arrestor is designed with one end rotatably connected to the main body of the bracket and the other end connected to the traction rope. This ensures that the fall arrestor maintains an effective connection with the main body of the bracket in different states. Furthermore, its rotatable end effectively ensures that its movement trajectory meets the braking requirements of the slider, thereby guaranteeing the reliability of the fall arrestor bracket structure. This also prevents secondary falls due to low precision in the fit between the fall arrestor and the slider, and effectively extends the service life of the structure.

[0045] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0047] Figure 1 Explosion diagram of the fall arrestor structure provided in the embodiments of this application Figure 1 ;

[0048] Figure 2Explosion diagram of the fall arrestor structure provided in the embodiments of this application Figure 2 ;

[0049] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0050] Figure 4 This is a schematic diagram of the anti-fall bracket structure under normal working conditions (normal position) of the folding frame;

[0051] Figure 5 This is a schematic diagram of the anti-fall bracket structure in the braking state (braking position) of the folding frame;

[0052] Figure 6 This is a schematic diagram of the internal structure of the fall arrestor bracket provided in the embodiments of this application;

[0053] Figure 7 for Figure 6 Enlarged view of part A;

[0054] Figure 8 This is a schematic diagram of the braking component structure provided in an embodiment of this application.

[0055] In the diagram: 10. Bracket body; 11. Plug; 111. Rotating shaft; 12. Sliding groove; 13. Limiting component; 131. First through hole; 20. Folding frame; 21. Slider; 211. Braking part; 2111. Second helical tooth; 2112. Second guide tooth surface; 2113. Second guide surface; 2114. Second limiting tooth surface; 2115. Second connecting surface; 212. Weight reduction groove; 30. Anti-fall mechanism; 31. Braking component; 311. First rack; 3111. First helical tooth; 3112. First guide tooth surface; 3113. First guide surface; 3114. First limiting tooth surface; 3115. First connecting surface; 312. Second through hole; 313. Deflection end; 314. Rotating end; 315. First section; 316. Second section; 32. Elastic component; 40. Traction rope. Detailed Implementation

[0056] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] With the continuous improvement of modern living standards, electric clothes drying racks, as a modern household product that combines convenience and efficiency, are gradually becoming the preferred equipment for drying clothes on balconies for many families. They not only greatly simplify the clothes drying process, but also bring unprecedented convenience to daily life with their intelligent operation experience.

[0060] Generally, an electric clothes drying rack consists of a sophisticated combination of core components, including the main unit, drying rods, brackets, and steel wire ropes connecting the main unit and the brackets, as well as a folding frame. Its working principle is based on the traction of the steel wire ropes. By controlling the winding and unwinding of the steel wire ropes, the drying rods and brackets are raised or lowered smoothly, easily completing the operations of raising and lowering clothes. Meanwhile, the folding frame, as a crucial support and guiding mechanism, is slidably connected to the main unit and brackets. Its flexible unfolding and retracting characteristics ensure the stability and smoothness of the brackets during the raising and lowering process.

[0061] However, as the background technology shows, in the daily use of electric clothes drying racks, the steel wire rope, as a key traction component of the entire system, directly affects the safety and reliability of the equipment. Steel wire ropes are exposed to the complex and ever-changing outdoor environment for extended periods, inevitably suffering from multiple adverse factors such as air humidity, sudden temperature changes, and chemical corrosion. These factors combined often lead to severe corrosion on the surface of the steel wire rope, or fatigue aging due to prolonged exposure to repeated loads. This not only significantly reduces the rigidity of the steel wire rope but also severely weakens its load-bearing capacity, creating potential safety hazards for the entire system.

[0062] If the wire rope suddenly breaks for the reasons mentioned above, the bracket and drying rod will instantly lose their traction support and then tilt or even fall rapidly under their own weight. This safety hazard not only affects the normal use of the electric clothes drying rack, but also poses a major threat to the personal and property safety of users.

[0063] In view of this, and in response to the safety issues of the steel wire rope in electric clothes drying racks, this embodiment provides a fall-prevention bracket structure. By setting a fall-prevention mechanism on the bracket body that can be triggered by the steel wire rope, the fall-prevention mechanism can brake the folding frame through a slider when triggered by the steel wire rope, thereby solving a series of technical problems such as the low safety performance of the clothes drying rack.

[0064] Please refer to the instruction manual attached. Figures 1-7 The anti-fall bracket structure includes a bracket body 10, a folding frame 20, and an anti-fall mechanism 30. The bracket body 10 serves as the supporting structure for the clothes drying rod in the clothes dryer, primarily responsible for supporting the clothes drying on the rod and using a traction rope 40 to guide its upward and downward movement relative to the main unit of the clothes dryer. In practical applications, the traction rope 40 (or wire rope) connects the main unit of the clothes dryer to the bracket body 10, and also transmits power and enables the clothes dryer's lifting function. When the user issues a lifting command via the control panel or remote control, the main unit of the clothes dryer activates the corresponding drive device (such as a motor), transmitting power to the bracket body 10 via the traction rope 40, thus achieving the lifting function of the clothes dryer.

[0065] It is understandable that the folding rack 20 can also be called a scissor rack. As mentioned above, the folding rack 20 is equipped with a slider 21 that is slidably connected to the main body 10 of the bracket. The folding rack 20 is generally composed of multiple metal rods or tubes connected by hinges, forming multiple scissor-shaped components connected sequentially along the lifting direction. This design gives the folding rack 20 good load-bearing capacity and guiding ability. It folds and unfolds during the lifting and lowering of the main body 10 relative to the main unit, ensuring that the main body 10 of the bracket (and the clothesline) can maintain stable operation while bearing a certain weight of clothing, and also has a certain degree of wind resistance.

[0066] Correspondingly, the bracket body 10 is provided with a sliding groove 12 that matches the structure of the slider 21. Through the cooperation of the slider 21 with the sliding groove 12, during the unfolding and folding of the folding frame 20, the interaction force generated between the folding frame 20 and the bracket body due to the change in relative position will be transmitted through the slider 21, so that the slider 21 can slide back and forth in the sliding groove 12 along the length direction of the bracket body 10, so that the clothes rack can achieve a smooth lifting and lowering action.

[0067] The anti-fall mechanism 30 is mounted on the bracket body 10. One end of the anti-fall mechanism 30 is rotatably connected to the bracket body 10, allowing it to swing between a normal position and a braking position. The other end of the anti-fall mechanism 30 is connected to the traction rope 40. When the traction rope 40 is taut, the anti-fall mechanism 30 can be pulled to a certain height by the traction rope 40, and the anti-fall mechanism 30 is in the normal position and disengaged from the slider 21, allowing the slider 21 (folding frame 20) to move with the rise and fall of the bracket body 10, maintaining the normal function of the clothes drying rack. When the traction rope 40 is slack or broken, the anti-fall mechanism 30 is in the braking position to abut and brake the slider 21, fixing the folding frame 20 relative to the bracket body 10, thus preventing the bracket body 10 from descending further under the constraint of the folding frame 20.

[0068] This fall arrestor bracket structure uses a traction rope 40 to pull the bracket body 10 and simultaneously pull the fall arrestor mechanism 30. When the wire rope breaks, the fall arrestor mechanism 30 is triggered to brake. It has a fast response speed and a simple structure, making it easy to install on existing bracket bodies 10 and highly applicable.

[0069] Meanwhile, the anti-fall bracket structure uses the moment when the traction rope 40 slackens or breaks to trigger the anti-fall mechanism 30, which greatly shortens its braking response time, so that the bracket body 10 can be quickly stopped from falling further when the slider 21 is braked, thus improving the safety performance of the clothes drying rack.

[0070] Furthermore, the fall arrest mechanism 30 is configured with one end rotatably connected to the bracket body 10 and the other end connected to the traction rope 40, so that the fall arrest mechanism 30 maintains an effective connection with the bracket body 10 in different states. It also effectively ensures that its movement trajectory meets the braking requirements of the slider 21 through its rotating end 314, thereby ensuring the reliability of the fall arrest bracket structure, avoiding secondary falls due to low matching accuracy between the fall arrest mechanism 30 and the slider 21, and effectively extending the service life of the structure.

[0071] Please continue to refer to the instruction manual appendix. Figures 1-6Furthermore, the fall arrestor 30 is equipped with a brake 31 and a limiting member 13. The limiting member 13 is fixedly connected to the bracket body 10. One end of the brake 31 is rotatably connected to the bracket body 10, and the other end of the brake 31 is connected to the traction rope 40. The limiting member 13 is located above the brake 31, with one end connected to the bracket body 10 and the other end abutting against the brake 31. In this configuration, the traction rope 40 pulls the brake 31, and at the same time, the limiting member 13 drives the bracket body 10, achieving synchronous traction of the bracket body 10. In the event of an abnormality such as breakage of the traction rope 40, the traction force originally borne by the wire rope disappears, the wire rope is released from the traction of the brake 31 and the limiting member 13, and the brake 31 moves relative to the limiting member 13 to abut against the slider 21 to brake the slider 21, thereby preventing the bracket body 10 from falling due to the breakage of the traction rope 40.

[0072] Preferably, the limiting member 13 is located in the middle of the bracket body 10, and the traction rope 40 passes through both the limiting member 13 and the brake member 31 to simultaneously pull the bracket body 10 and the brake member 31. This arrangement simplifies the installation and connection of the traction rope 40, while avoiding the brake member 31 from bearing the weight from the bracket body 10, thus ensuring the stability of the brake member 31.

[0073] In one embodiment, the limiting member 13 is provided with a first through hole 131 with an opening on one side, and the braking member 31 is provided with a second through hole 312 with an opening on one side. The opening directions of the first through hole 131 and the second through hole 312 are arranged opposite to each other. The traction rope 40 passes through the second through hole 312 and the first through hole 131, and its rope end abuts against the bottom of the braking member 31. At this time, the limiting member 13 and the braking member 31 abut against each other. The first through hole 131 is located directly above the second through hole 312 and forms a closed hole with the second through hole 312. The traction rope 40 is confined within this hole, which can prevent the traction rope 40 from jumping during the lifting process.

[0074] As an optional implementation, the bracket body 10 is further provided with a plug 11 at its end, which seals both ends of the sliding groove 12. One of the plugs 11 has a rotating shaft 111 along the width direction of the bracket body 10, and the brake 31 is rotatably connected to the rotating shaft 111. Thus, the length of the brake 31 can cover the complete sliding trajectory of the sliding end of the folding frame 20. At the same time, connecting the brake 31 to the plug 11 facilitates the installation of the anti-fall mechanism 30 without changing the original connection structure of the bracket body 10 and the folding frame 20, and does not affect the normal operation of the original bracket body 10 and the folding frame 20.

[0075] Understandably, in this embodiment, the limiting member 13 constrains the normal position of the brake member 31, so that the brake member 31 and the slider 21 can be kept within a suitable distance range, so as to ensure that the brake member 31 can respond quickly and brake the slider 21 when triggered by the traction rope 40.

[0076] For example, the braking component 31 and the slider 21 can be braked by, but not limited to, friction braking (the braking component 31 and the slider 21 are in direct contact with each other and braking is achieved by friction), ratchet and pawl braking (the braking component 31 and the slider 21 are respectively provided with matching ratchet and pawl structures, and the pawl is engaged in the ratchet tooth groove when braking), and toothed braking (the braking component 31 and the slider 21 are engaged by end face teeth, and the two tooth surfaces are locked together when braking).

[0077] It is understandable that the fall arrestor 30 can fall by its own weight or by applying an external force to it to achieve contact with the sliding end of the folding frame 20.

[0078] In one embodiment, such as Figures 1-2 , Figures 4-6 As shown, the fall arrestor 30 is also provided with an elastic element 32, which is located above or below the brake element 31. One end of the elastic element 32 is connected to the brake element 31, and the other end is connected to the bracket body 10 or the limiting element 13. It can generate a spring force that causes the brake element 31 to deflect downward to accelerate the braking speed.

[0079] Specifically, in one embodiment, the elastic element 32 can be disposed above the brake element 31, with one end connected to the brake element 31 and the other end connected to the limiting element 13 or the portion of the bracket body 10 located above the brake element 31. When the traction rope 40 is taut, the elastic element 32 compresses and deforms. When the traction rope 40 slackens or breaks, the elastic element 32 recovers its deformation, and its elastic force pushes the brake element 31 downward. Under the action of its own weight and the elastic force of the elastic element 32, the brake element 31 quickly deflects and abuts against the sliding end of the folding frame 20, thereby braking the folding frame 20. In this configuration, the elastic element 32 can be a compression spring or a combination of one or more torsion springs, which can generate a downward elastic force applied to the brake element 31 to increase the braking rate of the brake element 31. It is understandable that when the elastic element 32 is a compression spring, preferably, the compression spring is located at the deflection end 313 of the brake element 31, with one end connected to the limiting element 13 and the other end connected to the brake element 31. When the traction rope 40 loosens or breaks, the brake element 31 loses the traction effect of the traction rope 40, and the spring force causes the brake element 31 to deflect rapidly downward to achieve braking. When the elastic element 32 is a torsion spring, preferably, the torsion spring is located at the rotation end 314 of the brake element 31, with one end abutting against the upper surface of the brake element 31 and the other end abutting against the position of the bracket body 10 above the brake element 31. When the traction rope 40 loosens or breaks, the brake element 31 loses the traction effect of the traction rope 40, and the spring force causes the brake element 31 to deflect rapidly downward to achieve braking.

[0080] In some other embodiments, the elastic element 32 can be disposed below the brake element 31, with one end connected to the brake element 31 and the other end connected to the portion of the bracket body 10 located below the brake element 31. When the brake element 31 is under the traction of the traction rope 40, the elastic element 32 stretches and deforms. When the traction rope 40 slackens or breaks, the elastic element 32 recovers its deformation, and its elastic force pulls the brake element 31 downward. Under the action of its own weight and the elastic force of the elastic element 32, the brake element 31 quickly deflects and abuts against the sliding end of the folding frame 20, thereby braking the folding frame 20. In this configuration, the elastic element 32 can be a tension spring or a torsion spring, which can generate a downward elastic force acting on the brake element 31 to improve the braking rate of the brake element 31, which will not be described in detail here.

[0081] Based on the embodiment described above, where the sliding end of the folding frame 20 is slidably connected to the bracket body 10 via a slider 21, a brake 31 is located on one side of the folding frame 20 and moves away from the slider 21 under the traction of the traction rope 40, allowing the slider 21 to slide normally relative to the bracket body 10 below the brake 31. A brake portion 211 is provided on the upper end face or side face of the slider 21; a protruding first rack 311 is provided on the end face of the brake 31 facing the brake portion 211. When the traction rope 40 slackens or breaks, the brake 31 loses the traction of the traction rope 40, and the brake 31 deflects downward. The brake portion 211 abuts against the first rack 311 in the sliding direction of the slider 21, thereby braking the slider 21 and thus braking the folding frame 20. It is understood that the brake portion 211 can be a boss, a ratchet, or multiple sets of toothed structures, or it can be a groove, a hole, etc., that can mesh with the first rack 311 to achieve braking, and is not limited thereto.

[0082] To enhance the strength of the braking unit 211 and the first rack 311 under braking conditions, such as Figure 7 As shown, the slider 21 has a load-reducing groove 212, which provides corresponding installation space for the braking part 211, ensuring that the braking part 211 can quickly and undisturbedly engage with the first rack 311 in emergency situations such as wire rope breakage. Correspondingly, the braking part 211 is made of stainless steel and is set in the load-reducing groove 212. The stainless steel braking part 211, with its high strength and good toughness, can achieve fast and precise engagement with the first rack 311 and other components. At the same time, the slider 21 is not limited to being made of materials with high structural strength such as stainless steel. This ensures the strength of the first rack 311 and the braking part 211 in the braking state while reducing the manufacturing cost and weight of the slider 21, thus optimizing the overall cost and mechanical performance of the clothes drying rack product.

[0083] Furthermore, placing the brake unit 211 within the load-reducing groove 212 effectively reduces the installation space occupied by the brake unit 211 on the slider 21, preventing accidental interference between the brake unit 211 and other components during normal operation. This reduces potential safety hazards caused by component collisions or friction, making the clothes drying rack safer and more reliable. Moreover, the load-reducing groove 212 increases the contact surface between the slider 21 and the brake unit 211, allowing the brake unit 211 to be better contained within one side of the slider 21. This enables the force borne by the brake unit 211 to be more evenly distributed throughout the slider 21 and the entire clothes drying rack structure, thereby helping to reduce local stress concentration, lower the risk of structural deformation, and improve the overall structural stability of the clothes drying rack.

[0084] As can be understood from the above embodiments, the braking part 211 needs to be configured to engage with the first rack 311 to produce a braking effect on the slider 21. In one embodiment, the braking part 211 is configured as a second rack protruding towards the first rack 311. The structure of the second rack is similar to that of the first rack 311, so that the first rack 311 and the second rack can effectively lock the folding frame 20 and the slider 21 in the engagement braking state. The engagement range between the first rack 311 and the second rack can also be maximized, so that the bracket body 10 can be stably restricted to the height state after the traction rope 40 breaks.

[0085] Furthermore, the tooth height of the first rack 311 is set to be less than or equal to the tooth height of the second rack. This means that in the event of an abnormal situation such as the breakage of the traction rope 40, the first rack 311 can engage with the second rack more quickly and tightly during its descent. The fact that the tooth height of the first rack 311 is less than or equal to the tooth height of the second rack ensures that the tooth tips of the second rack can abut against the bottom of the tooth groove of the first rack 311. It also allows each tooth of the first rack 311 and the second rack to form a tight meshing state, thereby providing strong resistance to the slider 21 and instantly preventing the bracket body 10 and the drying rod from continuing to fall. This greatly shortens the braking response time and improves the safety of the fall prevention.

[0086] In addition, the above design ensures that, regardless of which scheme is adopted, the teeth of the meshing part of the first rack 311 and the second rack can mesh with the second rack in all directions, increasing the contact area and friction between the first rack 311 and the second rack, making the braking effect more reliable.

[0087] Furthermore, the tight meshing of the racks and pinions and the reasonable tooth height design also help to reduce the jumping of the first rack 311 on the second rack during braking, thereby reducing the shaking and vibration of the bracket body 10 and the drying rod. This not only allows the clothes dryer to quickly return to a stable state after braking, but also reduces the damage to other components caused by shaking and vibration, and extends the service life of the clothes dryer.

[0088] In a preferred embodiment, the tooth height ratio of the first rack 311 to the second rack is 1:1. This allows the teeth of both racks to engage fully when they are in a meshing state, and each tooth can abut against the bottom of the other's tooth groove, resulting in a tighter and more uniform contact. This tight meshing greatly enhances the friction between the racks, enabling rapid and effective braking in case of malfunctions in the clothes drying rack, such as a broken wire rope, preventing the bracket and drying rod from continuing to fall.

[0089] It is worth mentioning that the tooth height of the first rack 311 and the tooth height of the second rack are greater than or equal to 3 mm, so as to ensure that the first rack 311 and the second rack have sufficient contact area in the meshing state, thereby ensuring that the resistance and friction generated between the anti-fall mechanism 30 and the slider 21 can withstand the weight of the bracket body 10 and the clothes drying components such as the clothes drying rod.

[0090] Furthermore, limiting the minimum tooth height of the first rack 311 and the second rack ensures that the tooth grooves on the first rack 311 and the second rack have sufficient depth, preventing slippage and other situations where the meshing fails due to vibration between the racks during braking, thus preventing instantaneous braking.

[0091] Please continue to refer to the instruction manual appendix. Figures 4-7 As can be seen from the above, in the event of an abnormality such as a breakage of the traction rope 40, the slider 21 will slide rapidly toward the center of the bracket body 10. In order to ensure that the first rack 311 and the second rack can provide strong resistance in the meshing state under such circumstances, so that the bracket body 10 can be quickly stabilized at the moment of falling, the first rack 311 of this embodiment has a plurality of spaced first helical teeth 3111. Each first helical tooth 3111 is inclined from the tooth bottom to the tooth top toward the rotating end 314 of the brake member 31. Correspondingly, the brake part 211 is a second rack protruding toward the first rack 311. The second rack includes a plurality of spaced second helical teeth 2111. Each second helical tooth 2111 is inclined from the tooth bottom to the tooth top toward the deflection end 313 of the brake member 31. In other words, when the traction rope 40 breaks, the slider 21 slides rapidly toward the middle of the bracket body 10, and the anti-fall mechanism 30 (brake 31) also swings downward rapidly, allowing the first rack 311 to contact the second rack. Through the above-mentioned arrangement, the direction of the first helical tooth 3111 is consistent with the direction of the tooth groove between any two adjacent first helical teeth 3111, and the direction of the second helical tooth 2111 is consistent with the direction of the tooth groove between any two adjacent first helical teeth 3111. This allows the first helical tooth 3111 to be inserted into the tooth groove of the second rack more easily, and also allows the second helical tooth 2111 to be inserted into the tooth groove of the first rack 311 more easily, thereby achieving the purpose of rapid and stable meshing between the two.

[0092] Furthermore, through the above configuration, it can be understood that when the first rack 311 and the second rack are engaged, the first helical tooth 3111 and the second helical tooth 2111 are parallel to each other, so that the inclination direction of the first helical tooth 3111 and the second helical tooth 2111 is opposite to the force direction of the two, thus ensuring the strength of the first helical tooth 3111 and the second helical tooth 2111 and reducing the possibility of them breaking at the moment of braking. It can also be understood that since the inclination direction of the two racks is opposite, they form a mutually locking structure when they mesh, making it less likely for the first rack 311 and the second rack to jump and disengage when under force, enhancing the impact resistance and further enhancing the reliability of braking.

[0093] Specifically, when the traction rope 40 breaks, the first rack 311 falls under the influence of gravity. The inclination direction of its first helical tooth 3111 and the second helical tooth 2111 of the second rack form a complementary engagement angle, allowing the first rack 311 to quickly engage with the second rack during the fall, greatly shortening the braking response time and improving fall protection safety. The helical tooth design also allows for more accurate positioning of the rack during engagement, avoiding braking failure due to rack position deviation, ensuring that the braking unit 211 can function stably at critical moments, effectively preventing the bracket and drying rod from falling.

[0094] For a specific structural form, please refer to the appendix of the instruction manual. Figures 6-7 The first helical tooth 3111 has a first guide tooth surface 3112 formed on the side near the deflection end 313 of the brake member 31, and the tip surface of the first helical tooth 3111 is connected to the first guide tooth surface 3112 through the first guide surface 3113. Correspondingly, the second helical tooth 2111 has a second guide tooth surface 2112 formed on the side near the rotation end 314 of the brake member 31, and the tip surface of the second helical tooth 2111 is connected to the second guide tooth surface 2113 through the second guide surface 2112.

[0095] Here, it should be explained that the first guide surface 3113 and the second guide surface 2113 can be, but are not limited to, inclined surfaces or arc surfaces that are respectively inclined to the first guide tooth surface 3112 and the second guide tooth surface 2112. From the above, it can be understood that during the meshing process of the first rack 311 and the second rack, the tip surface of the first helical tooth 3111 and the tooth profile end surface of the second helical tooth 2111 may come into contact. In this case, as the slider 21 continues to move towards the middle of the bracket body 10, when the first helical tooth 3111 and the second helical tooth 2111 move to the tooth groove position of each other, the first helical tooth 3111 and the second helical tooth 2111 will first contact the first guide tooth surface 3112 and the second guide tooth surface 2112, causing the first helical tooth 3111 and the second helical tooth 2111 to slide into the corresponding tooth grooves. To ensure that the first helical tooth 3111 and the second helical tooth 2111 can achieve the aforementioned effect more smoothly without slippage of the racks due to excessive sliding speed of the slider 21, this embodiment provides a first guide surface 3113 and a second guide surface 2113 on the first helical tooth 3111 and the second helical tooth 2111, respectively. This allows the first guide surface 3113 and the second guide surface 2113 to act as transition structures between the tip of the helical tooth and the guide tooth surface when the clothes drying rack experiences an abnormal situation such as breakage of the traction rope 40, and when the tip surfaces of the first helical tooth 3111 and the second helical tooth 2111 come into contact. These surfaces guide the movement direction of the corresponding helical teeth, ensuring that the tip surface of the first helical tooth 3111 can move along the first guide surface 3113 after contacting it. The preset trajectory smoothly slides into the tooth groove of the second rack, and the tip surface of the second helical tooth 2111 can smoothly slide into the tooth groove of the first rack 311 along the preset trajectory after contacting the second guide surface 2113. The two (first helical tooth 3111 and second helical tooth 2111) are further guided towards the bottom of their respective tooth grooves by the contact of the first guide tooth surface 3112 and the second guide tooth surface 2112, ensuring that the two racks complete precise engagement in a very short time. This ensures that even if the first helical tooth 3111 and the second helical tooth 2111 collide with each other, they can be quickly guided to the adjacent tooth groove as the slider 21 continues to slide, thus minimizing the problem of the bracket body 10 being difficult to brake due to misalignment.

[0096] Please refer to the instruction manual for further details. Figures 6-7The first helical tooth 3111 also forms a first limiting tooth surface 3114 on the side near the rotating end 314 of the brake member 31. The first rack 311 also forms a connecting surface for connecting each of the first helical teeth 3111. In this embodiment, for ease of distinction, the connecting surface formed by the first rack 311 in this embodiment is defined as the first connecting surface 3115. As can be seen from the above, in order to ensure the smooth guidance and stable engagement of the first helical tooth 3111 and the second helical tooth 2111, the second helical tooth 2111 also adopts a similar arrangement as described above. That is, the second rack forms a second connecting surface 2115 for connecting each of the second helical teeth 2111, and the side of the second helical tooth 2111 near the deflection end 313 of the brake member 31 also forms a second limiting tooth surface 2114 corresponding to the first limiting tooth surface 3114.

[0097] When the first rack 311 and the second rack are engaged, the first helical tooth 3111 and the second helical tooth 2111 make contact with each other through the first limiting tooth surface 3114 and the second limiting tooth surface 2114, thereby making the slider 21 achieve a braking effect. The first limiting tooth surface 3114 and the second limiting tooth surface 2114 are parallel to each other in this state, so that they form a surface release relationship, thereby maximizing the friction between the first rack 311 and the second rack.

[0098] Furthermore, in order to reduce the vibration generated by the first rack 311 and the second rack at the moment of collision, which could lead to tooth skipping or other unfavorable situations for their meshing, when the first rack 311 and the second rack are meshing, a surface contact relationship is formed between the tooth tip surface and the second connecting surface 2115 of the first helical tooth 3111, and between the tooth tip surface and the first connecting surface 3115 of the second helical tooth 2111. This optimizes the force distribution of the first rack 311 and the second rack at the moment of collision, reduces the vibration between them, and effectively protects the structural strength of the first helical tooth 3111 and the second helical tooth 2111.

[0099] Please refer to the instruction manual attached. Figure 7 In a preferred embodiment, the included angle α between the first guide tooth surface 3112 and the connecting surface is set to 105°-110°, and the included angle β between the first limiting tooth surface 3114 and the connecting surface is set to 75°-80°. This angle range ensures that the first helical tooth 3111 and the second helical tooth 2111 can quickly mesh, while also facilitating their disengagement and restoration during subsequent maintenance.

[0100] Continuing with the embodiment where the first rack 311 includes multiple first helical teeth 3111 and the second rack includes multiple second helical teeth 2111, the ratio of the tooth pitch of any two adjacent first helical teeth 3111 to the tooth width of the second helical teeth 2111 is set to 2:1. That is, the tooth width of the second helical teeth 2111 is only half the tooth pitch of the first helical teeth 3111, allowing them to easily engage with the tooth grooves of adjacent first racks 311. This reduces the possibility of slippage between the first rack 311 and the second rack due to excessively small tooth pitch and excessively high speed of the slider 21, thus ensuring the reliability of the fall arrestor structure.

[0101] Furthermore, by adopting the above proportions, the movement distance of the second helical tooth 2111 after being inserted into the tooth groove of the first rack 311 can be effectively limited. For example, if the first helical tooth 3111 and the second helical tooth 2111 collide during the meshing process of the first rack 311 and the second rack, and the two are quickly guided into the corresponding tooth grooves by the first guide surface 3113 and the second guide surface 2113, the second helical tooth 2111 only needs to move further in the tooth groove of the first rack 311 by a distance matching its own tooth width. Its movement distance is relatively small. This can ensure that the second helical tooth 2111 can be effectively inserted into the tooth groove of the first rack 311 while reducing the braking delay time of the slider 21. This effectively avoids the situation where the second helical tooth 2111 slides too far in the tooth groove of the first rack 311, causing the slider 21 to brake for a long time and thus posing a danger to the user.

[0102] In one embodiment, in the event of slack or breakage of the traction rope 40, the condition F = mv / t is satisfied between the brake element 31 and the slider 21. Here, F is the instantaneous impact force of the brake element 31 and the slider 21, m is the mass of the brake element 31, v is the falling velocity of the brake element 31, t is the duration of action, and F is less than or equal to 500N. 500N is a safety upper limit verified by ergonomics and materials mechanics, far below the structural failure threshold (such as the yield strength of metals), thus preventing structural damage or personal injury.

[0103] For example, if the mass of the brake component 31 is m = 2 kg, the falling speed is v = 3 m / s, and the action time is t = 0.012 s, then F = 500 N. The impact force is precisely controlled within 500 N to avoid deformation of the first rack 311, the second rack, the slider 21, or the brake component 31 due to overload. It should be understood that excessive impact force may cause the first rack 311 and the second rack to disengage with a probability as high as 10%, while the above design can reduce the probability to below 0.2%.

[0104] like Figures 1-2 4- Figure 6As shown above, it can be understood that since one end of the brake element 31 is rotatably mounted on the bracket body 10, when the brake element 31 (anti-fall mechanism 30) is in its normal position, the brake element 31 is inclined relative to the slider 21. Thus, when the brake element 31 and the slider 21 are respectively provided with a first rack 311 and a second rack, the inclination of the brake element 31 relative to the slider 21 will have a certain adverse effect on the meshing process of the first rack 311 and the second rack. Some of the first helical teeth 3111 in the first rack 311 will contact some of the second helical teeth 2111 in the second rack first, resulting in the stress of both being concentrated between the first helical teeth 3111 and the second helical teeth 2111 that contact first, thus posing a greater risk of helical tooth breakage.

[0105] Furthermore, if the slider 21 is in a position relatively close to the middle of the bracket body 10, the distance between the first rack 311 and the second rack will be greater than the distance when the slider 21 is in a position relatively close to the end of the bracket body 10, thereby increasing the braking time of the bracket body 10.

[0106] In view of this, in this embodiment, the tooth height of the second rack increases progressively from the end of the bracket body 10 to the center, or the tooth height of the first rack 311 increases progressively from the end of the bracket body 10 to the center. This is to ensure that the first rack 311 (brake element 31) is nearly parallel to the second rack in its normal position, thereby shortening the vertical distance between them. This allows the slider 21 to brake quickly in any position, especially when the bracket body 10 is in a lower position, where the slider 21 is close to the center of the bracket body 10. Through the above design, the contact engagement time of the first rack 311 and the second rack in this position can be shortened, improving braking sensitivity. By placing the first rack 311 and the second rack in a nearly parallel position, more of the first helical teeth 3111 and the second helical teeth 2111 can simultaneously contact each other when the first rack 311 and the second rack initially engage, thereby optimizing the force distribution between the two, reducing the risk of damage to the first rack 311 and the second rack, and ensuring the reliability of the fall arrestor structure.

[0107] In one embodiment, the braking part 211 is disposed on the upper end surface of the slider 21, the first rack 311 is disposed on the bottom surface of the brake member 31, and the orthographic projections of the first rack 311 and the braking part 211 on the horizontal plane at least partially overlap, so that the braking part 211 is inserted into the tooth groove of the first rack 311 from the tooth height direction and meshes with the first rack 311.

[0108] Please refer to Appendix 6 of the instruction manual. Figure 7As can be seen from the above, this anti-fall bracket structure can prevent the bracket body 10 from falling due to the breakage of the traction rope 40 by adding an anti-fall mechanism 30 to the original bracket body 10 and folding frame 20. In the embodiment where the folding frame 20 is arranged basically along the center line formed along the length direction of the bracket body 10, in order to ensure that the brake 31 can form a reliable braking relationship with the slider 21, the brake 31 also needs to be arranged to extend basically along the center line of the length direction of the bracket body 10. However, such an arrangement may lead to the risk of interference between the folding frame 20 and the brake 31 during movement. This may cause the brake 31 to inadvertently brake the slider 21 due to the interference of the folding frame 20 during the lifting and lowering of the bracket body 10, making it difficult for the clothes drying machine to maintain normal lifting and lowering movement.

[0109] In view of the above problems, the braking component 31 of this embodiment includes a first segment 315 and a second segment 316, wherein one end of the first segment 315 is rotatably connected to the bracket body 10, the other end of the first segment 315 is connected to the second segment 316, and a first rack 311 is disposed on the first segment 315. Understandably, the first segment 315 of the brake element 31 is located closer to the end of the bracket body 10 than its second segment 316. Therefore, the first segment 315 of the brake element 31 can be configured to extend substantially along the centerline of the bracket body 10 to ensure uniform force distribution between the first rack 311 and the second rack located on the slider 21. The second segment 316 of the brake element 31 is connected to the first segment 315 through a transition portion and is offset from the first segment 315 on the horizontal plane, so that the brake element 31 forms a structure similar to a "Z". A clearance portion is formed on one side of the brake element 31 located on the second segment 316. This clearance portion can provide clearance space for part of the structure of the folding frame 20, allowing the folding frame 20 to be at least partially located in the clearance portion, thereby ensuring that the folding and unfolding function of the folding frame 20 and the braking function provided by the brake element 31 when the traction rope 40 breaks can be provided normally.

[0110] Specifically, in some other embodiments, the braking part 211 is disposed on the side of the slider 21, and the first rack 311 is disposed on the side wall of the brake member 31 facing the braking part 211. When the brake member 31 is under the traction of the traction rope 40, the first rack 311 and the braking part 211 are offset in the width direction of the bracket body 10. When the brake member 31 loses the traction of the traction rope 40 and deflects downward, the braking part 211 is inserted into the tooth groove of the first rack 311 from the tooth width direction and meshes with the first rack 311. It can be understood that in this arrangement, the tooth groove width of the first rack 311 can be adjusted according to the actual setting shape of the braking part 211 (second rack) so that the braking part 211 can be smoothly inserted into the tooth groove of the first rack 311.

[0111] Preferably, the length of the first rack 311 covers the sliding trajectory of the brake part 211 to ensure braking of the bracket body 10 at any lifting height.

[0112] Furthermore, when the brake element 31 is pulled by the traction rope 40 and is in a normal position, its horizontal tilt angle relative to the bracket body 10 is 3°-10°, so that the slider 21 can slide normally on its running trajectory, realize the complete folding of the folding frame 20, and also limit the deflection time of the brake element 31 to a certain extent, realize rapid braking, and also avoid the bracket body 10 being too large.

[0113] In another embodiment, the braking element 31, under the traction of the traction rope 40, forms a horizontal angle with the bracket body 10 of 6° or greater, specifically 6°-10°. Within this angle range, its corresponding technical effect is better than the above-mentioned technical solution.

[0114] This embodiment also provides a clothes drying rack with a fall prevention bracket structure that is pulled and triggered by a traction rope 40. The braking is directly triggered by the traction rope 40, which has high sensitivity and can effectively improve the safety performance of the clothes drying rack.

[0115] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:

[0116] (1) By setting up a fall prevention mechanism 30 that is synchronously pulled by the traction rope 40, when the traction rope 40 suddenly breaks, the fall prevention mechanism 30 loses the traction force of the traction rope 40, thereby triggering the brake, so that the relative movement between the folding frame 20 and the bracket body 10 stops and the bracket body 10 is stopped, thereby improving the safety performance.

[0117] (2) By simultaneously pulling the brake component 31 and the bracket body 10 with the traction rope 40, the structure of the fall protection mechanism 30 is simplified and the installation is convenient;

[0118] (3) By rotating one end of the brake 31 to the plug 11 and connecting the other end directly to the traction rope 40, it is convenient to install the anti-fall mechanism 30 without changing the connection structure of the original bracket body 10 and folding frame 20, and without affecting the normal operation of the original bracket body 10 and folding frame 20.

[0119] (4) By gradually changing the tooth height or tooth width of the first rack 311 and the second rack, the braking sensitivity can be effectively improved without increasing the structural components of the fall arrest mechanism 30.

[0120] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0121] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0122] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0123] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A fall arrest bracket structure, characterized by, include: The main body of the bracket is raised and lowered by a traction rope; The folding frame is equipped with a slider that is slidably connected to the main body of the bracket; A fall arrest mechanism is provided on the bracket body, with one end of the fall arrest mechanism rotatably connected to the bracket body and the other end connected to the traction rope; When the traction rope is taut, the fall protection mechanism disengages from the slider; when the traction rope is slack or broken, the fall protection mechanism abuts against and brakes the slider.

2. The fall arrest bracket structure of claim 1, wherein, The fall protection mechanism is equipped with a braking component and a limiting component, and the limiting component is fixedly connected to the bracket body; One end of the braking component is rotatably connected to the bracket body, and the other end of the braking component is deflected by the traction rope and abuts against the limiting component.

3. The anti-fall bracket structure according to claim 2, characterized in that, The fall protection mechanism is also provided with an elastic element, which is located at the deflection end of the braking element, with one end connected to the braking element and the other end connected to the limiting element or the bracket body. Alternatively, the elastic element is located at the rotating end of the braking element, with one end connected to the braking element and the other end connected to the bracket body.

4. The fall arrest bracket structure of claim 2, wherein, The slider is equipped with a braking part; The brake member has a protruding first rack on its end face facing the brake part. When the brake member deflects downward, the first rack engages with the brake part to brake the slider.

5. The anti-fall bracket structure according to claim 4, characterized in that, The slider has a load-reducing groove, and the braking part is made of stainless steel and is located in the load-reducing groove.

6. The fall arrestor structure according to claim 4, characterized in that, The braking part is configured as a second rack protruding towards the first rack, wherein the tooth height of the first rack is less than or equal to the tooth height of the second rack.

7. The fall arrestor structure according to claim 6, characterized in that, The ratio of the tooth height of the first rack to the tooth height of the second rack is 1:

1.

8. The anti-fall bracket structure according to claim 6, characterized in that, The tooth height of the first rack and the tooth height of the second rack are greater than or equal to 3 mm.

9. The fall arrestor structure according to claim 4, characterized in that, The first rack includes a plurality of spaced first helical teeth, each of which is inclined from the tooth bottom to the tooth top toward the rotating end of the brake member; The braking part is configured as a second rack protruding towards the first rack. The second rack includes a plurality of spaced second helical teeth, each of which is inclined from the tooth bottom to the tooth top toward the deflection end of the braking element.

10. The fall arrest bracket structure of claim 9, wherein, A first guide tooth surface is formed on the side of the first helical tooth near the deflection end of the brake member, and the tip surface of the first helical tooth is connected to the first guide tooth surface through a first guide surface. The second helical tooth has a second guide tooth surface formed on the side near the rotating end of the brake member, and the tip surface of the second helical tooth is connected to the second guide tooth surface through a second guide surface.

11. The fall arrestor structure according to claim 10, characterized in that, The first helical tooth near the rotating end of the brake member also forms a first limiting tooth surface, and the first rack also forms a connecting surface for connecting each of the first helical teeth. The included angle between the first guide tooth surface and the connecting surface is set to 105°-110°, and the included angle between the first limiting tooth surface and the connecting surface is set to 75°-80°.

12. The fall arrest bracket structure of claim 9, wherein, The ratio of the pitch of any two adjacent first helical teeth to the width of the second helical teeth is set to 2:

1.

13. The fall arrest bracket structure of claim 2, wherein, In the event of slack or breakage of the traction rope, the following condition must be satisfied between the braking element and the slider: F = mv / t; Where F is the instantaneous impact force of the braking component and the slider, m is the mass of the braking component, v is the falling speed of the braking component, t is the action time, and F is less than or equal to 500N.

14. The fall arrest bracket structure of claim 6, wherein, The tooth height of the second rack increases progressively from the end of the bracket body to the center.

15. The fall arrest bracket structure of claim 4, wherein, The braking part is disposed on the upper end face of the slider, the first rack is disposed on the bottom surface of the braking member, and the first rack and the braking part are at least partially overlapped in the orthographic projection on the horizontal plane, so that the braking part is inserted into the tooth groove of the first rack from the tooth height direction and meshes with the first rack.

16. The fall arrestor structure according to claim 15, characterized in that, The braking component includes a first section and a second section. One end of the first section is rotatably connected to the bracket body, and the other end of the first section is connected to the second section. The first rack is disposed on the first section. The second segment is connected to the first segment via a transition section and is offset from the first segment on a horizontal plane, so that the brake element is located on one side of the second segment and forms a clearance portion, and the folding frame is at least partially located in the clearance portion.

17. The fall arrestor structure according to claim 15, characterized in that, The tooth height of the first rack increases progressively from the end of the bracket body to the center.

18. The fall arrest bracket structure of claim 4, wherein, The braking part is located on the side of the slider, and the first rack is located on the side wall of the braking member facing the braking part. When the braking member deflects downward, the braking part is inserted into the tooth groove of the first rack from the tooth width direction and meshes with the first rack.

19. The fall arrest bracket structure of claim 4, wherein, The length of the first rack covers the sliding trajectory of the braking part.

20. The fall arrest bracket structure of claim 2, wherein, Under the traction of the traction rope, the braking component forms a horizontal angle of 3°-10° with the main body of the bracket.

21. The fall arrest bracket structure of claim 2, wherein, Under the traction of the traction rope, the braking component forms a horizontal angle greater than or equal to 6° with the main body of the bracket.

22. A clothes drying machine characterised in that, include: The fall arrestor structure as described in any one of claims 1-21.

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