Storage rack

Abstract

The utility model provides a storage rack. The storage rack comprises a base; the driving mechanism is mounted on the base; the storage structure comprises a folding and unfolding unit and a bearing part, the first end of the folding and unfolding unit is connected with the bearing part, and the second end of the folding and unfolding unit is in driving connection with the driving mechanism so as to drive the bearing part to move in the vertical direction; and the braking mechanism is installed on the base and connected with the driving mechanism, when the moving speed of the bearing part is larger than a speed threshold value, the braking mechanism is triggered to be in a braking state, and at the moment, the braking mechanism can brake the storage structure so that the storage structure can be kept at the current position. According to the technical scheme, the storage rack can solve the problems that in the prior art, an electric suspended ceiling storage rack lacks an effective emergency braking mechanism, and the safety and reliability of products are low.

Description

Technical Field

[0001] This utility model relates to the field of storage equipment technology, and more specifically, to a storage rack. Background Technology

[0002] In the smart home sector, motorized ceiling storage racks are increasingly favored by consumers. However, existing motorized ceiling storage racks have significant shortcomings in terms of safety, especially in the event of motor or drive shaft failure. The lack of an effective emergency braking mechanism could cause the storage tray to suddenly drop, resulting in damage to items or personal injury, seriously affecting the safety and reliability of the product. Utility Model Content

[0003] The main purpose of this utility model is to provide a storage rack that can solve the problem that existing electric ceiling storage racks lack an effective emergency braking mechanism, resulting in low product safety and reliability.

[0004] To achieve the above objectives, this utility model provides a storage rack, comprising: a base; a drive mechanism mounted on the base; a storage structure including a storage unit and a support portion, wherein a first end of the storage unit is connected to the support portion, and a second end of the storage unit is driven to the drive mechanism to move the support portion vertically; and a braking mechanism mounted on the base and connected to the drive mechanism, wherein when the moving speed of the support portion exceeds a speed threshold, the braking mechanism is triggered to a braking state, at which time the braking mechanism can brake the storage structure to keep the storage structure in its current position.

[0005] Furthermore, the drive mechanism includes a drive unit, a transmission shaft, a first retractable part, and a second retractable part. The drive unit is mounted on the base, and both the first and second retractable parts are rotatably connected to the base. The drive unit is drivenly connected to the first retractable part, and the first retractable part is drivenly connected to the second retractable part via the transmission shaft. The support part is connected to at least three retractable units, and each retractable unit includes a rope. The first end of at least one rope is wound around the first retractable part, and the first end of at least one rope is wound around the second retractable part.

[0006] Furthermore, the braking mechanism includes a ratchet and a braking part. The ratchet is fixedly connected to the second retracting part and is located on the side of the second retracting part away from the first retracting part. The braking part has a retracting state that avoids the ratchet teeth of the ratchet and a stopping state that forms a stop engagement with the ratchet teeth of the ratchet.

[0007] Furthermore, the storage rack also includes a pressure sensing mechanism, which includes a movable base and a pressure sensing part. The movable base is movably mounted on the base in a vertical direction, and the pressure sensing part is mounted on the base. Part of the movable base can apply pressure to the pressure sensing part.

[0008] Furthermore, the base has a mounting cavity, and the movable seat includes a first movable part and a second movable part connected to each other. The first movable part and the pressure sensing part are both located inside the mounting cavity. The first movable part is located above the pressure sensing part, and the bottom of the first movable part can apply pressure to the pressure sensing part. The second movable part is located outside the mounting cavity, and a fixed pulley is provided on the second movable part. The first end of the retraction unit passes around the fixed pulley and is connected to the support part.

[0009] Furthermore, one of the first movable body and the second movable body is provided with at least two connecting parts, and the other of the first movable body and the second movable body is provided with at least two first connecting holes, with the at least two connecting parts corresponding to the at least two first connecting holes one by one.

[0010] Furthermore, along the first direction, limit pins are provided on the side walls of the opposite sides of the first movable part, and strip holes are provided on the side walls of the opposite sides of the base. The strip holes extend in the vertical direction, and the limit pins on the same side are provided in correspondence with the strip holes. The limit pins pass through the strip holes and can move in the vertical direction relative to the strip holes.

[0011] Furthermore, the pressure sensing unit includes a pressure sensor and a mounting structure. The pressure sensing mechanism also includes a pressure plate. The pressure sensor is mounted on the mounting structure, which is set on a base. The pressure plate is movably mounted on the mounting structure in the vertical direction and is located above the pressure sensor.

[0012] Furthermore, one of the mounting structure and the pressure plate is provided with at least one positioning post, and the other of the mounting structure and the pressure plate is provided with at least one positioning hole. The at least one positioning post and the at least one positioning hole are provided in a one-to-one correspondence, and the positioning post passes through the corresponding positioning hole.

[0013] Furthermore, along the axial direction of the drive shaft, the support portion has a first side and a second side arranged opposite to each other. Each of the first and second sides is provided with two take-up and release units. The first take-up and release portion is located on the first side, and the second take-up and release portion is located on the second side. Both the first take-up and release portion and the second take-up and release portion have two independent rope grooves. The two take-up and release units located on the first side are respectively wound around the two rope grooves of the first take-up and release portion, and the two take-up and release units located on the second side are respectively wound around the two rope grooves of the second take-up and release portion.

[0014] The present invention comprises a base, a drive mechanism, a storage structure, and a braking mechanism. The base is used to connect to the structure to be installed (such as a ceiling). The support portion is used to place the items to be stored. The second end of the storage unit is connected to the drive mechanism to drive the support portion to move vertically. After the items to be stored are placed on the support portion, the drive mechanism and the storage unit work together to move the support portion vertically towards the base, thus storing the items on top without occupying the space below. The braking mechanism provides an automatic braking function in emergencies. It can brake the storage structure in case of drive mechanism failure or accelerated descent of the support portion due to excessive weight, preventing the support portion from falling further. This ensures the safety of the stored items and prevents the support portion from falling to the ground and being damaged, thereby improving the safety and reliability of the storage rack. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof.

[0016] In the picture:

[0017] Figure 1 A schematic diagram of the structure of the storage rack according to an embodiment of the present invention is shown at one angle;

[0018] Figure 2 A schematic diagram of the structure of the storage rack according to an embodiment of the present invention is shown;

[0019] Figure 3 An exploded view of a storage rack according to an embodiment of the present invention is shown;

[0020] Figure 4 A structural schematic diagram of the storage rack according to another embodiment of the present invention is shown;

[0021] Figure 5 An exploded view of a storage rack according to an embodiment of the present invention is shown;

[0022] Figure 6 It shows Figure 5 Enlarged view of point A;

[0023] Figure 7 A partial structural schematic diagram of a storage rack according to an embodiment of the present invention is shown;

[0024] Figure 8 An exploded view of a storage rack according to an embodiment of the present invention is shown;

[0025] Figure 9 It shows Figure 8 Enlarged view of point B;

[0026] Figure 10 This diagram shows a structural schematic of the storage rack according to an embodiment of the present invention from another angle.

[0027] Figure 11 It shows Figure 10 Enlarged view of point C;

[0028] Figure 12 A schematic diagram of the structure of the storage rack according to an embodiment of the present invention is shown;

[0029] Figure 13 It shows Figure 12 Enlarged view of point D;

[0030] Figure 14 A partial structural schematic diagram of a storage rack according to an embodiment of the present invention is shown;

[0031] Figure 15 A partial structural schematic diagram of a storage rack according to an embodiment of the present invention is shown;

[0032] Figure 16 A partial structural schematic diagram of a storage rack according to an embodiment of the present invention is shown;

[0033] Figure 17 A partial structural schematic diagram of a storage rack according to an embodiment of the present invention is shown.

[0034] The above figures include the following reference numerals:

[0035] 10. Base; 101. Mounting bracket; 11. Mounting cavity; 12. Strip hole; 13. First mounting seat; 14. First decorative cover; 15. Second decorative cover; 16. Second mounting seat; 20. Storage structure; 21. Support part; 22. Retraction unit; 30. Drive mechanism; 31. Drive part; 32. Transmission shaft; 33. First retraction part; 34. Second retraction part; 35. Rope groove; 36. First gear; 37. Second gear; 40. Braking mechanism; 41. Ratchet; 42. Braking part; 421. Trigger plate; 4211. Connecting protrusion; 4212. Limiting tooth; 4213. Third connecting hole; 422. Ring part; 423. Metal sheet; 4231. Fourth connecting hole; 424. Fixing part; 4241. First hook; 4 25. Trigger; 4251. First connecting protrusion; 4252. Second hook; 4253. Fifth connecting hole; 426. Tension spring; 427. Brake connector; 4271. Brake connector body; 4272. Connecting post; 4273. Slot; 428. Brake pad; 43. Third mounting base; 431. Mounting plate; 432. Through hole; 50. Pressure sensing mechanism; 51. Moving base; 511. First moving part; 512. Second moving part; 513. Connecting part; 514. First connecting hole; 515. Second connecting hole; 52. Pressure sensing part; 521. Pressure sensor; 522. Mounting structure; 53. Fixed pulley; 54. Pressure plate; 55. Positioning post; 56. Limiting pin; 57. Positioning hole; 60. Connector. Detailed Implementation

[0036] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] See also Figures 1 to 17 As shown, this utility model provides a storage rack, which includes: a base 10; a drive mechanism 30 mounted on the base 10; a storage structure 20, including a storage unit 22 and a support part 21, wherein the first end of the storage unit 22 is connected to the support part 21, and the second end of the storage unit 22 is driven to be connected to the drive mechanism 30 to drive the support part 21 to move in the vertical direction; and a braking mechanism 40 mounted on the base 10 and connected to the drive mechanism 30. When the moving speed of the support part 21 is greater than a speed threshold, the braking mechanism 40 is triggered to a braking state. At this time, the braking mechanism 40 can brake the storage structure 20 so that the storage structure 20 is kept in its current position.

[0038] In this embodiment, the base 10 is used to connect with the structure to be installed (such as a ceiling), the support part 21 is used to place the items to be stored, and the second end of the storage unit 22 is driven by the drive mechanism 30 to move the support part 21 vertically. After the items to be stored are placed on the support part 21, the support part 21 moves vertically towards the base 10 through the cooperation of the drive mechanism 30 and the storage unit 22, so as to store the items to be stored on top without occupying the space below. The braking mechanism 40 provides an automatic braking function in an emergency. It can brake the storage structure 20 when the drive mechanism 30 fails or the support part 21 accelerates downward due to excessive weight, preventing the support part 21 from falling further. This ensures the safety of the items to be stored and prevents the support part 21 from falling to the ground and being damaged, thereby improving the safety and reliability of the storage rack.

[0039] See also Figures 1 to 17 As shown, in one embodiment of the present invention, the drive mechanism 30 includes a drive unit 31, a transmission shaft 32, a first retractable part 33, and a second retractable part 34. The drive unit 31 is mounted on the base 10. The first retractable part 33 and the second retractable part 34 are both rotatably connected to the base 10. The drive unit 31 is drivenly connected to the first retractable part 33. The first retractable part 33 is drivenly connected to the second retractable part 34 through the transmission shaft 32. The support part 21 is connected to at least three retractable units 22. Each retractable unit 22 includes a rope. The first end of at least one rope is wound around the first retractable part 33, and the first end of at least one rope is wound around the second retractable part 34.

[0040] In this embodiment, the first end of at least one rope is wound around the first take-up and release section 33, and the first end of at least one rope is wound around the second take-up and release section 34. Driven by the drive section 31, the first take-up and release section 33 can take up and release the rope wound around it. The drive section 31 indirectly drives the second take-up and release section 34 via a transmission shaft 32, enabling the take-up and release of the rope wound around it. The transmission shaft 32 ensures the synchronicity of the operation of the first and second take-up and release sections 33 and 34, preventing the support section 21 from shifting or swaying due to uneven transmission. The support section 21 is connected to at least three take-up and release units 22. Each take-up and release unit 22 is connected to the first and second take-up and release sections 33 and 34 via ropes, forming multi-point support. This ensures the balance and stability of the support section 21 during lifting and lowering, maintaining good operating condition even under heavy loads, and improving overall load-bearing capacity and safety. When the moving speed of the support part 21 exceeds the speed threshold, the braking mechanism 40 is triggered to the braking state. At this time, the braking mechanism 40 can brake the storage structure 20 to keep the storage structure 20 in the current position, thereby preventing the support part 21 from falling further and ensuring the safe operation of the system in emergency situations.

[0041] In one embodiment, the drive unit 31 is a motor.

[0042] In one embodiment, both the first retractable part 33 and the second retractable part 34 are flanges.

[0043] See also Figures 1 to 17 As shown, in one embodiment of the present invention, the braking mechanism 40 includes a ratchet 41 and a braking part 42. The ratchet 41 is fixedly connected to the second retracting part 34. The ratchet 41 is located on the side of the second retracting part 34 away from the first retracting part 33. The braking part 42 has a avoidance state that avoids the ratchet teeth of the ratchet 41 and a stop state that forms a stop engagement with the ratchet teeth of the ratchet 41.

[0044] In this embodiment, when the braking part 42 is in the avoidance state, the braking mechanism 40 does not interfere with the operation of the storage structure 20. When the braking part 42 is in the stop state, the braking part 42 engages with the ratchet teeth of the ratchet 41, and the braking mechanism 40 is in the braking state, which can brake the storage structure 20, so that the support part 21 remains in its current position and does not continue to fall, avoiding possible injury to items or personnel due to braking delay, and improving the safety of the storage rack. Furthermore, the braking part 42 only engages with the ratchet teeth of the ratchet 41 in emergency situations, rather than continuously applying braking, which can avoid increasing system wear and energy consumption due to unnecessary braking during normal operation.

[0045] See also Figures 1 to 17 As shown, in one embodiment of the present invention, the storage rack further includes a pressure sensing mechanism 50. The pressure sensing mechanism 50 includes a movable seat 51 and a pressure sensing part 52. The movable seat 51 is movably disposed on the base 10 in the vertical direction, and the pressure sensing part 52 is mounted on the base 10. Part of the movable seat 51 can apply pressure to the pressure sensing part 52.

[0046] In this embodiment, after the item to be stored is placed on the support part 21, the movable seat 51 moves vertically away from the base 10 under the gravity of the support part 21. During the movement, part of the movable seat 51 applies pressure to the pressure sensing part 52 to cause it to deform. The change in resistance value generated by the deformation can monitor the weight of the item to be stored on the support part 21, so as to know in time whether the support part 21 is carrying a heavy object that exceeds the design range, and prevent mechanical failure or safety accidents caused by overload. Compared with the principle of monitoring whether the current value exceeds the standard by existing electric lifting products, the storage rack of this application can monitor whether the load exceeds the standard when the product is not running, so as to ensure the service life of the drive mechanism 30.

[0047] See also Figures 1 to 17As shown, in one embodiment of the present invention, the base 10 has a mounting cavity 11, and the movable seat 51 includes a first movable part 511 and a second movable part 512 connected to each other. The first movable part 511 and the pressure sensing part 52 are both located inside the mounting cavity 11. The first movable part 511 is located above the pressure sensing part 52, and the bottom of the first movable part 511 can apply pressure to the pressure sensing part 52. The second movable part 512 is located outside the mounting cavity 11, and a fixed pulley 53 is provided on the second movable part 512. The first end of the take-up and put-down unit 22 passes around the fixed pulley 53 and is connected to the support part 21.

[0048] In this embodiment, the first movable part 511 of the pressure sensing unit 52 and the movable seat 51 is placed in the mounting cavity 11 of the base 10. This not only makes the setting position of the pressure sensing unit 52 more concealed and does not damage the overall appearance of the storage rack, but also protects the pressure sensing unit 52 from the influence of the external environment, thereby improving the accuracy of monitoring and the durability of the pressure sensing unit 52.

[0049] After the item to be stored is placed on the support part 21, the weight of the item pulls the storage unit 22 downwards. The storage unit 22, through the fixed pulley 53, pulls the second moving part 512 downwards. This causes the second moving part 512 to move the first moving part 511 away from the base 10 and apply pressure to the pressure sensor 52, causing the pressure sensor 52 to deform. The change in resistance value generated by the deformation can monitor the weight of the item to be stored on the support part 21, so as to know in time whether the support part 21 is bearing a weight exceeding the design range, preventing mechanical failure or safety accidents caused by overload. Furthermore, as the weight of the item to be stored on the support part 21 increases, the pressure of the storage unit 22 on the fixed pulley 53 increases synchronously, which in turn increases the pressure applied by the first moving part 511 to the pressure sensor 52. In addition, by dividing the movable base 51 into a first movable part 511 installed inside the mounting cavity 11 and a second movable part 512 installed outside the mounting cavity 11, the stability of the pressure sensing part 52 is ensured, and the space of the storage rack is fully utilized. This avoids the problem of the pressure sensing part 52 occupying too much space due to its complex structure, which is conducive to the compact design of the overall structure.

[0050] See also Figures 1 to 17 As shown, in one embodiment of the present invention, at least two connecting parts 513 are provided on one of the first movable parts 511 and the second movable parts 512, and at least two first connecting holes 514 are provided on the other of the first movable parts 511 and the second movable parts 512, with at least two connecting parts 513 corresponding to at least two first connecting holes 514.

[0051] In this embodiment, at least two connecting portions 513 and at least two first connecting holes 514 are provided in a one-to-one correspondence, so that after the bolt passes through the first connecting hole 514, it connects with the connecting portion 513 corresponding to the first connecting hole 514, thereby realizing the connection between the first movable part 511 and the second movable part 512. By providing at least two connecting portions 513 and at least two first connecting holes 514 on the first movable part 511 and the second movable part 512, multiple connection points are formed between them, which can ensure the stability of the connection between them. In addition, the multi-point connection helps to reduce the vibration and shaking of the movable seat 51 during the movement process, and can improve the monitoring accuracy of the pressure sensing unit 52 for load changes.

[0052] See also Figures 1 to 17 As shown, in one embodiment of the present invention, limit pins 56 are provided on the side walls of the opposite sides of the first movable body 511 along the first direction, and strip holes 12 are provided on the side walls of the opposite sides of the base 10. The strip holes 12 extend in the vertical direction, and the limit pins 56 on the same side are correspondingly provided with the strip holes 12. The limit pins 56 pass through the strip holes 12 and can move in the vertical direction relative to the strip holes 12.

[0053] In this embodiment, the limiting pin 56 restricts the lateral movement of the first movable part 511, ensuring that the first movable part 511 can only move in the vertical direction, thus limiting its degrees of freedom in the lateral and other directions. The length of the vertically extending slot 12 determines the range of movement of the first movable part 511, allowing precise control of the vertical movement distance of the movable seat 51, avoiding excessive or insufficient movement, and ensuring the accuracy and reliability of the load monitoring by the pressure sensing unit 52. The cooperation between the limiting pin 56 and the slot 12 not only restricts the lateral movement of the first movable part 511 but also increases the structural stability of the entire movable seat 51. Even when the support part 21 is carrying a heavy load, it can maintain good stability, avoiding structural deformation or damage caused by uneven load distribution.

[0054] See also Figures 1 to 17 As shown, in one embodiment of the present invention, two second connecting holes 515 are provided on the side walls of the opposite sides of the first movable split body 511. The two second connecting holes 515 on the same side are arranged at intervals along the length direction of the base 10. The two second connecting holes 515 on the same side and the two strip holes 12 are arranged one-to-one. There are four limiting pins 56, and the four limiting pins 56 are arranged one-to-one with the four second connecting holes 515. Each limiting pin 56 is fixedly inserted into the corresponding second connecting hole 515.

[0055] See also Figures 1 to 17As shown, in one embodiment of the present invention, the pressure sensing unit 52 includes a pressure sensor 521 and a mounting structure 522, and the pressure sensing mechanism 50 also includes a pressure plate 54. The pressure sensor 521 is mounted on the mounting structure 522, the mounting structure 522 is disposed on the base 10, and the pressure plate 54 is movably disposed on the mounting structure 522 in the vertical direction and is located above the pressure sensor 521.

[0056] In this embodiment, the pressure plate 54 is located above the pressure sensor 521. After the item to be stored is placed on the support 21, the weight of the item causes the movable seat 51 to move vertically away from the base 10. During the movement of the movable seat 51, part of the movable seat 51 presses down on the pressure plate 54, and the pressure plate 54 presses down on the pressure sensor 521, thereby monitoring the weight of the item to be stored to determine whether the support 21 is bearing a weight exceeding its design range. In addition, the pressure plate 54 and the mounting structure 522 provide physical protection for the pressure sensor 521, preventing it from directly bearing pressure, reducing the risk of mechanical impact or overload damage, and extending the service life of the pressure sensor 521.

[0057] See also Figures 1 to 17 As shown, in one embodiment of the present invention, at least one positioning post 55 is provided on one of the mounting structure 522 and the pressure plate 54, and at least one positioning hole 57 is provided on the other of the mounting structure 522 and the pressure plate 54. At least one positioning post 55 and at least one positioning hole 57 are provided in a one-to-one correspondence, and the positioning post 55 passes through the corresponding positioning hole 57.

[0058] In this embodiment, the corresponding arrangement of the positioning pin 55 and the positioning hole 57 ensures the precise guidance and positioning of the pressure plate 54 relative to the mounting structure 522, preventing offset or shaking during movement. This ensures that the pressure plate 54 can accurately and stably transmit force to the pressure sensor 521, improving the accuracy and reliability of load monitoring. The positioning pin 55, passing through the corresponding positioning hole 57, restricts the horizontal movement of the pressure plate 54. Furthermore, the cooperation between the positioning pin 55 and the corresponding positioning hole 57 simplifies the assembly process of the pressure plate 54 and the mounting structure 522. Simply align the positioning pin 55 with its corresponding positioning hole 57 and insert it for quick and accurate assembly, improving assembly efficiency.

[0059] See also Figures 1 to 17As shown, in one embodiment of the present invention, along the axial direction of the transmission shaft 32, the support portion 21 has a first side and a second side arranged opposite to each other. Each of the first and second sides is provided with two take-up and release units 22. The first take-up and release portion 33 is located on the first side, and the second take-up and release portion 34 is located on the second side. Both the first take-up and release portion 33 and the second take-up and release portion 34 have two independent rope grooves 35. The two take-up and release units 22 located on the first side are respectively wound around the two rope grooves 35 of the first take-up and release portion 33, and the two take-up and release units 22 located on the second side are respectively wound around the two rope grooves 35 of the second take-up and release portion 34.

[0060] In this embodiment, the retraction unit 22 is a rope. By setting two retraction units 22 on the first and second sides of the support part 21 respectively, it can be ensured that the load is evenly distributed on both sides when the support part 21 is raised and lowered, avoiding structural instability caused by uneven loading of heavy objects, thereby improving the stability of the storage rack. The first retraction part 33 and the second retraction part 34 each have two independent rope grooves 35, and each rope groove 35 is used for only one rope to be wound, which can reduce the mutual friction between the two ropes wound on the first retraction part 33 or the second retraction part 34 at the same time, reduce the wear rate of the rope, and extend the service life of the rope. The two rope grooves 35 located on the first retraction part 33 or the second retraction part 34 are set independently, which facilitates the installation and maintenance of the rope. When it is necessary to replace or inspect the rope, it can be operated independently without affecting other ropes, simplifying the maintenance process.

[0061] See also Figures 1 to 17 As shown, in one embodiment of this utility model, the drive unit 31 is a motor, and the storage rack also includes a first mounting base 13 and a second mounting base 16. The base 10 includes two mounting brackets 101, both of which are fixedly connected to the structure to be installed (such as a ceiling). The two mounting brackets 101 are spaced apart along the axial direction of the drive shaft 32. The first mounting base 13 is fixedly connected to one of the two mounting brackets 101, and the second mounting base 16 is fixedly connected to the other of the two mounting brackets 101. The storage rack also includes four connecting members 60, specifically, the connecting members 60 are bearing seats. Two connecting members 60 are fixedly installed on the first mounting base 13, and the other two connecting members 60 are fixedly installed on the second mounting base 16. The two ends of the first storage part 33 are rotatably connected to the two connecting members 60 on the first mounting base 13, and the two ends of the second storage part 34 are rotatably connected to the two connecting members 60 on the second mounting base 16. The first end of the first retractable part 33 passes through the shaft hole of the connector 60 and is connected to the motor drive. One end of the transmission shaft 32 is connected to the second end of the first retractable part 33, and the other end of the transmission shaft 32 is connected to the end of the second retractable part 34 near the first mounting base 13. The motor drives the first retractable part 33 to rotate, and the rotation of the first retractable part 33 drives the transmission shaft 32 to rotate, and the rotation of the transmission shaft 32 in turn drives the second retractable part 34 to rotate.

[0062] See also Figures 1 to 17 As shown, in one embodiment of this utility model, the storage rack further includes a first decorative cover 14, and the drive mechanism 30 further includes a first gear 36 and two second gears 37. The motor is mounted on the first mounting base 13, and the two second gears 37 are rotatably mounted on the first mounting base 13. The output shaft of the motor is drivenly connected to the first gear 36. The diameter of the first gear 36 is smaller than the diameter of the second gears 37. The first gear 36 meshes with one of the two second gears 37, and the two second gears 37 mesh with each other. The first end of the first storage portion 33 is connected to the other of the two second gears 37. Through the above arrangement, the high-speed, low-torque rotation of the motor can be converted into the low-speed, high-torque rotation of the transmission shaft 32. The first decorative cover 14 covers the first mounting base 13, and the first gear 36, the two second gears 37, and part of the motor are covered by the first decorative cover 14, which not only ensures the neat appearance of the storage rack but also protects the first gear 36 and the second gears 37.

[0063] See also Figures 1 to 17 As shown, in one embodiment of the present invention, the braking mechanism 40 is installed on the side of the second mounting base 16 away from the first mounting base 13. The storage rack also includes a second decorative cover 15, which covers the second mounting base 16 and can cover the braking mechanism 40, thus ensuring that the storage rack has a simple and beautiful appearance and also protecting the braking mechanism 40.

[0064] The braking mechanism 40 also includes a braking part 42, which includes a trigger disc 421, a third mounting base 43, an annular member 422, a metal plate 423, a fixing member 424, a trigger member 425, a tension spring 426, a braking connector 427, and a brake pad 428. The third mounting base 43 is fixedly mounted on the side of the second mounting base 16 away from the first mounting base 13. The third mounting base 43 has a first receiving cavity. A ratchet 41 is fixedly sleeved on the end of the drive shaft 32 away from the first mounting base 13, and the ratchet 41 is located in the first receiving cavity. The trigger disc 421 is sleeved on the end of the drive shaft 32 away from the first mounting base 13, and the trigger disc 421 can be positioned relative to the drive shaft. The end of shaft 32 away from the first mounting base 13 rotates freely. The trigger disc 421 and the brake connector 427 are both located on the side of the third mounting base 43 away from the second mounting base 16. The outer periphery of the trigger disc 421 is provided with a connecting protrusion 4211, and the connecting protrusion 4211 is provided with a third connecting hole 4213. The inner peripheral wall of the trigger disc 421 is provided with a limiting tooth 4212. The brake connector 427 includes a brake connecting body 4271, and the brake connecting body 4271 is provided with a connecting post 4272 and a slot 4273. The connecting post 4272 passes through the third connecting hole 4213 to realize the connection between the brake connector 427 and the trigger disc 421. The third mounting base 43 includes two mounting plates 431 spaced axially along the drive shaft 32. Each mounting plate 431 has a through hole 432, which are correspondingly arranged. One end of the brake pad 428 passes through both through holes 432 and is rotatable relative to them. The other end of the brake pad 428 passes through a slot 4273 in the brake connection body 4271. The middle part of the brake pad 428 is located in the first receiving cavity. The trigger disc 421 has a second receiving cavity. An annular member 422 is disposed in the second receiving cavity. A metal piece 423 is fixedly sleeved on the end of the drive shaft 32 away from the first mounting base 13, and the metal piece 423 is engaged with the inner circumferential wall of the annular member 422. The trigger member 425 has a first connecting... The metal sheet 423 has a fourth connecting hole 4231, and the first connecting protrusion 4251 passes through the fourth connecting hole 4231. The fixing member 424 is fixedly sleeved on the end of the drive shaft 32 away from the first mounting seat 13 and located on the side of the trigger member 425 away from the first mounting seat 13. The fixing member 424 has a second connecting protrusion on the side facing the second mounting seat 16. The trigger member 425 has a fifth connecting hole 4253, and the second connecting protrusion passes through the fifth connecting hole 4253. The fixing member 424 has a first hook 4241, and the trigger member 425 has a second hook 4252. One end of the tension spring 426 is hooked on the first hook 4241, and the second end of the tension spring 426 is hooked on the second hook 4252.

[0065] When the storage rack is running normally, the braking part 42 is in the avoidance state, the transmission shaft 32 rotates normally and can drive the ratchet 41, trigger disc 421 and metal plate 423 fixedly sleeved on the transmission shaft 32 to rotate synchronously. At this time, under the tension of the tension spring 426, the trigger 425 has no cooperation relationship with the limiting teeth 4212 provided on the inner peripheral wall of the trigger disc 421, the brake plate 428 does not contact the ratchet 41, and the ratchet 41 can rotate normally and synchronously with the transmission shaft 32. When the storage rack is in emergency braking mode (i.e., when the drive shaft 32 or the motor fails), the support part 21 will descend rapidly under the action of gravity. The trigger 425 will be subjected to centrifugal force and will generate relative displacement and centrifugal motion with the fixing part 424. At this time, one end of the trigger 425 will abut against the limiting tooth 4212 provided on the inner peripheral wall of the trigger disk 421. The limiting tooth 4212 forms a stop and limit on the trigger 425 in the circumferential direction. At this time, the drive shaft 32 continues to rotate. The trigger 425 can drive the trigger disc 421 to rotate together. When the trigger disc 421 rotates, it drives the brake connector 427 to rotate. The rotation of the brake connector 427 in turn drives the brake pad 428 to rotate synchronously. When the brake pad 428 rotates, it will jam the ratchet of the ratchet 41, that is, the brake part 42 is in a stop state, so that the ratchet 41 cannot continue to rotate. Since the ratchet 41 is fixedly sleeved on the transmission shaft 32, the transmission shaft 32 can be stopped from rotating, thereby stopping the support part 21 from descending.

[0066] In one embodiment, the brake connector 427 and the brake pad 428 are an integral structure.

[0067] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects: A base, a drive mechanism, a storage structure, and a braking mechanism are provided. The base is used to connect to the structure to be installed (such as a ceiling), the support portion is used to place the items to be stored, and the second end of the storage unit is driven by the drive mechanism to move the support portion vertically. After the items to be stored are placed on the support portion, the drive mechanism and the storage unit work together to move the support portion vertically towards the base, thus storing the items on top without occupying the space below. The braking mechanism provides an automatic braking function in emergency situations. It can brake the storage structure when the drive mechanism fails or the support portion accelerates downward due to excessive weight, preventing the support portion from falling further. This ensures the safety of the items to be stored and prevents the support portion from falling to the ground and being damaged, thereby improving the safety and reliability of the storage rack.

[0068] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A storage rack, characterized in that, include: Base (10); A drive mechanism (30) is mounted on the base (10); The storage structure (20) includes a storage unit (22) and a support part (21). The first end of the storage unit (22) is connected to the support part (21), and the second end of the storage unit (22) is driven to be connected to the drive mechanism (30) so as to drive the support part (21) to move in the vertical direction. A braking mechanism (40) is installed on the base (10) and connected to the drive mechanism (30). When the moving speed of the support part (21) is greater than the speed threshold, the braking mechanism (40) is triggered to the braking state. At this time, the braking mechanism (40) can brake the storage structure (20) so that the storage structure (20) remains in the current position.

2. The storage rack according to claim 1, characterized in that, The drive mechanism (30) includes a drive unit (31), a transmission shaft (32), a first take-up and release unit (33), and a second take-up and release unit (34). The drive unit (31) is mounted on the base (10). The first take-up and release unit (33) and the second take-up and release unit (34) are rotatably connected to the base (10). The drive unit (31) is drivenly connected to the first take-up and release unit (33). The first take-up and release unit (33) is drivenly connected to the second take-up and release unit (34) through the transmission shaft (32). The support part (21) is connected to at least three take-up and release units (22). Each take-up and release unit (22) includes a rope. The first end of at least one rope is wound around the first take-up and release unit (33), and the first end of at least one rope is wound around the second take-up and release unit (34).

3. The storage rack according to claim 2, characterized in that, The braking mechanism (40) includes a ratchet (41) and a braking part (42). The ratchet (41) is fixedly connected to the second retracting part (34). The ratchet (41) is located on the side of the second retracting part (34) away from the first retracting part (33). The braking part (42) has a avoidance state that avoids the ratchet teeth of the ratchet (41) and a stop state that forms a stop engagement with the ratchet teeth of the ratchet (41).

4. The storage rack according to any one of claims 1 to 3, characterized in that, The storage rack also includes a pressure sensing mechanism (50), which includes a movable base (51) and a pressure sensing part (52). The movable base (51) is movably disposed on the base (10) along the vertical direction, and the pressure sensing part (52) is mounted on the base (10). Part of the movable base (51) is capable of applying pressure to the pressure sensing part (52).

5. The storage rack according to claim 4, characterized in that, The base (10) has a mounting cavity (11). The movable seat (51) includes a first movable part (511) and a second movable part (512) connected to each other. The first movable part (511) and the pressure sensing part (52) are both located in the mounting cavity (11). The first movable part (511) is located above the pressure sensing part (52). The bottom of the first movable part (511) can apply pressure to the pressure sensing part (52). The second movable part (512) is located outside the mounting cavity (11). A fixed pulley (53) is provided on the second movable part (512). The first end of the retracting unit (22) passes around the fixed pulley (53) and is connected to the support part (21).

6. The storage rack according to claim 5, characterized in that, One of the first movable body (511) and the second movable body (512) is provided with at least two connecting parts (513), and the other of the first movable body (511) and the second movable body (512) is provided with at least two first connecting holes (514). The at least two connecting parts (513) are provided in a one-to-one correspondence with the at least two first connecting holes (514).

7. The storage rack according to claim 5, characterized in that, Along the first direction, limit pins (56) are provided on the side walls of the opposite sides of the first movable split body (511), and strip holes (12) are provided on the side walls of the opposite sides of the base (10). The strip holes (12) extend along the vertical direction, and the limit pins (56) on the same side are provided in a one-to-one correspondence with the strip holes (12). The limit pins (56) pass through the strip holes (12) and can move relative to the strip holes (12) along the vertical direction.

8. The storage rack according to claim 4, characterized in that, The pressure sensing unit (52) includes a pressure sensor (521) and a mounting structure (522). The pressure sensing mechanism (50) also includes a pressure plate (54). The pressure sensor (521) is mounted on the mounting structure (522). The mounting structure (522) is disposed on the base (10). The pressure plate (54) is movably disposed on the mounting structure (522) along the vertical direction and is located above the pressure sensor (521).

9. The storage rack according to claim 8, characterized in that, One of the mounting structure (522) and the pressure plate (54) is provided with at least one positioning post (55), and the other of the mounting structure (522) and the pressure plate (54) is provided with at least one positioning hole (57). At least one positioning post (55) is provided in correspondence with at least one positioning hole (57), and the positioning post (55) passes through the corresponding positioning hole (57).

10. The storage rack according to claim 2 or 3, characterized in that, Along the axial direction of the drive shaft (32), the support portion (21) has a first side and a second side arranged opposite to each other. Both the first side and the second side are provided with two take-up and release units (22). The first take-up and release portion (33) is located on the first side, and the second take-up and release portion (34) is located on the second side. Both the first take-up and release portion (33) and the second take-up and release portion (34) have two independent rope grooves (35). The two take-up and release units (22) located on the first side are respectively wound around the two rope grooves (35) of the first take-up and release portion (33), and the two take-up and release units (22) located on the second side are respectively wound around the two rope grooves (35) of the second take-up and release portion (34).

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