Hidden type downward turning supporting device and downward turning door storage cabinet

Abstract

The utility model relates to the technical field of storage cabinets and accessories thereof, and particularly discloses a hidden type downward turning supporting device and a downward turning door storage cabinet. A connecting rod mechanism and a damping mechanism are arranged in a shell, one end of the connecting rod mechanism is connected with a downward turning door, and the other end of the connecting rod mechanism is in transmission fit with the damping mechanism; when the turn-down door is turned down and opened, the connecting rod mechanism can drive the damping block to press down, so that descending kinetic energy is transmitted to the damper through the damping head, and the damper relieves and stabilizes the movement kinetic energy of the connecting rod mechanism, so that the turn-down speed of the turn-down door is slowed down, and a user is prevented from being injured due to too high speed; the damping head abuts against the end of the damper, kinetic energy on the connecting rod mechanism is converted to the damper to be relieved, the damping mechanism is not directly abraded in the using process of the flip-down door, and therefore the using stability of the hidden type flip-down device for the flip-down door in the flip-down process can be kept for a long time; therefore, the safety in the use process is ensured for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of storage cabinets and accessories thereof, and in particular to a hidden downward-turning support device and a downward-turning door storage cabinet using the hidden downward-turning support device. Background Art

[0002] Furniture such as boxes and cabinets are essential furniture for every family. At present, these furniture basically adopt the structure of upward flipping doors to open and close the cabinet doors. However, in order to facilitate taking out or storing things in the cabinet, some cabinets adopt the structure of downward flipping doors to open and close the cabinet doors. At present, the cabinet doors adopting downward flipping doors generally have downward flipping supporting devices between the cabinet doors and the cabinet body, so as to facilitate the downward flipping and opening of the cabinet doors.

[0003] For example, a Chinese patent publication with publication number CN210396468U proposes a slow-down mechanism for a down-flip door, comprising a box body, a down-flip door and a sleeve; a down-flip door is movably mounted on one side of the box body through a rotating shaft; a No. 2 rotary damper is fixedly mounted on both the front and rear sides of the down-flip door; a No. 1 magnet ring and a No. 2 magnet ring are fixedly mounted at both ends of the sleeve. When using this device, the two groups of No. 2 rotary dampers are fixedly connected to the front and rear sides of the down-flip door respectively, and the two groups of No. 1 rotary dampers are fixedly connected to the front and rear sides of the interior of the box respectively. When the down-flip door needs to be opened, the down-flip door is pulled outward and downward. At this time, the main connecting rod will first rotate around the No. 1 rotary damper, and then the piston at one end of the down-flip door connecting rod will also separate from the No. 2 magnet ring and slide to the other end. In this process, the piston and the No. 1 rotary damper will both play a role in slowing down the falling speed of the down-flip door. When the piston contacts one side of the No. 1 magnet ring, the down-flip door can be fully opened. When the down-flip door needs to be closed, the down-flip door is pushed upward. At this time, the piston will move in the opposite direction again and be adsorbed with the No. 2 magnet ring again. At the same time, the main connecting rod also rotates in the opposite direction. The adsorption of the iron block inside the piston and the No. 2 magnet ring can play a tightening role. Moreover, this device plays a tightening role through magnet adsorption instead of torsion spring, and the down-flip door can also be fully opened.

[0004] However, the following defects still exist in the above-mentioned downward-turning support device:

[0005] (1) As the down-flip door is opened and closed, the connecting rod rotates around the rotary damper. As the down-flip door is used for a long time, the number of rotations between the connecting rod and the rotary damper reaches a certain period, which will cause certain wear on the rotary damper, thereby reducing the cushioning effect of the damper during the subsequent opening and closing process of the down-flip door. This can easily cause the down-flip door to flip down too fast and cause injuries to the user, affecting safety.

[0006] (2) This device uses a magnet to attract the iron block inside the piston to tighten and close the downward-flipping door. However, the magnet will demagnetize after being used for a long time, so its stability is not high.

[0007] The technical problem to be solved by the present application is: to design a hidden downward-flipping support device which can ensure long-term stability in use, thereby ensuring safety during use, and a downward-flipping door storage cabinet using the hidden downward-flipping support device. Utility Model Content

[0008] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a hidden flip-down support device and a flip-down door storage cabinet using the hidden flip-down support device, which can ensure long-term stability in use and thus ensure safety during use.

[0009] The technical solution adopted by the utility model is: a hidden downward flipping support device, including a shell, a connecting rod mechanism with one end connected to the downward flipping door, and a damping mechanism that cooperates with the other end of the connecting rod mechanism to reduce the downward flipping speed of the downward flipping door, the damping mechanism includes a damper and a damping block that cooperates with the shell to limit sliding, the damping block is provided with a damping head, and the damping head abuts against the end of the damper.

[0010] In some embodiments, the connecting rod mechanism includes a connecting rod, a crank at one end rotatably connected to one end of the connecting rod, a connecting bracket rotatably connected to the other end of the connecting rod, and a cam rotatably connected to the other end of the crank.

[0011] In some embodiments, a spring is provided in the shell and is rotatably connected thereto, a spring is provided at the lower end of the spring, and the cam abuts against the upper surface of the spring.

[0012] In some embodiments, the connecting rod mechanism further includes a first pull rod having one end rotationally connected to the crank, a second pull rod having one end rotationally connected to the other end of the first pull rod, and the other end of the second pull rod is connected to the damping block.

[0013] In some embodiments, a guide rod is provided in the shell, a guide hole is provided in the second pull rod, and the guide rod and the guide hole are limitedly slidably matched.

[0014] In some embodiments, the damping mechanism further includes a fixing seat fixedly mounted to the housing, and the damper includes a first damper and a second damper, and the first damper and the second damper are both disposed in the fixing seat.

[0015] In some embodiments, the damping block includes an upper damping block and a lower damping block, which are respectively located at two ends of a fixed seat and slidingly matched with the inner limit of the shell, and the damping heads on the upper damping block and the lower damping block are respectively abutted against two ends of the first damper.

[0016] In some embodiments, the shell is also provided with a sliding button with a sliding fit, the sliding button is provided with a connecting rod with one end rotatably connected thereto, and the other end of the connecting rod is provided with a sliding block rotatably connected thereto, and the sliding block can slide to the upper end of the second damper and abut against the second damper.

[0017] In some embodiments, an upper bushing is disposed at the upper end of the shell, a lower bushing is disposed at the lower end of the shell, and the spring is disposed in the lower bushing.

[0018] A downward-flipping door storage cabinet is provided with any hidden downward-flipping support device in the above-mentioned embodiments, comprising a cabinet body and a downward-flipping door rotatably connected to the cabinet body, a shell body embedded in the cabinet body, and a connecting bracket fixedly installed to the downward-flipping door.

[0019] The utility model has the following technical effects: by arranging a connecting rod mechanism and a damping mechanism in the shell, one end of the connecting rod mechanism is connected to the down-flip door, and the other end of the connecting rod mechanism is in transmission cooperation with the damping mechanism, when the down-flip door is swung down and opened, the connecting rod mechanism will drive the damping block to be pressed down, thereby transmitting the descending kinetic energy to the damper through the damping head, and the damper relieves and stabilizes the movement kinetic energy of the connecting rod mechanism, thereby slowing down the down-flipping speed of the down-flip door to avoid injuring the user due to excessive speed, and by utilizing the damping head to abut against the end of the damper to convert the kinetic energy on the connecting rod mechanism to the damper for relief, there is no direct wear on the damping mechanism during the use of the down-flip door, thereby being able to maintain the stability of the hidden down-flip device for the down-flip door during the down-flipping process for a long time, thereby ensuring the safety during use for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a hidden downward-folding support device according to Embodiment 1 of the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the hidden downward-flipping support device of Example 1 of the utility model;

[0022] Figure 3 This is a schematic diagram of the connecting rod structure of the hidden downward-flipping support device of Example 1 of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the hidden downward-folding support device of Example 1 of the utility model;

[0024] Figure 5 This is a structural schematic diagram of a hidden downward-flipping support device according to Embodiment 1 of the utility model, in which a slider is located above a second damper;

[0025] Figure 6 This is a structural schematic diagram of the hidden downward-flipping support device of Example 1 of the utility model when the downward-flipping door is opened to 45 degrees;

[0026] Figure 7 This is a structural schematic diagram of the hidden downward-flipping support device of Example 1 of the utility model when the downward-flipping door is closed to 25 degrees;

[0027] Figure 8 This is a schematic structural diagram of a downward-folding door storage cabinet according to Embodiment 2 of the present utility model.

[0028] The numbers and names in the figure correspond to each other as follows: 1. Shell; 2. Connecting rod mechanism; 3. Damping mechanism; 20. Connecting rod; 21. Crank; 201. Connecting bracket; 210. Cam; 22. Shrapnel; 220. Spring; 23. First pull rod; 24. Second pull rod; 25. Guide rod; 240. Guide hole; 30. Fixed seat; 301. First damper; 302. Second damper; 303. Guide groove; 31. Upper damping block; 32. Lower damping block; 310. Damping head; 4. Slide button; 40. Connecting rod; 41. Sliding block; 10. Upper bushing; 11. Lower bushing; 12. Strip opening; 5. Cabinet; 6. Lower flip door. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1: Please refer to Figure 1-7The utility model provides a technical solution: a hidden downward flipping support device, including a shell 1, a damping mechanism 3 and a connecting rod mechanism 2 are arranged in the shell 1, one end of the connecting rod mechanism 2 is fixedly connected to the downward flip door, and the other end of the connecting rod mechanism 2 is transmission-coordinated with the damping mechanism 3 to mitigate the downward flipping speed of the downward flipping door when it is opened, the connecting rod mechanism 2 includes a connecting rod 20 and a crank 21, one end of the crank 21 is rotationally connected to one end of the connecting rod 20, and the other end of the connecting rod 20 is provided with a connecting bracket 201 rotatably connected thereto, the connecting bracket 201 is used to be fixedly installed with the downward flip door, so this end of the connecting rod mechanism 2 is fixedly installed with the downward flip door through the connecting bracket 201 and thus fixedly connected to the downward flip door, and the other end of the crank 21 is provided with a cam 210 rotatably connected thereto, and a circular portion corresponding to the cam 210 in the shell 1 is provided. The arc surface is also provided with an elastic sheet 22 rotatably connected thereto, two springs 220 are embedded at the lower end of the elastic sheet 22, a lower bushing 11 is provided at the lower end of the housing 1, and the spring 220 is just embedded in the lower bushing 11, the lower surface of the elastic sheet 22 abuts against the upper end of the spring 220, and the arc surface of the cam 210 abuts against the upper surface of the elastic sheet 22, and the connecting rod mechanism 2 also includes a first pull rod 23 rotatably connected to the crank 21 at one end, and a second pull rod 24 rotatably connected to the other end of the first pull rod 23 at one end. When the lower flip door is flipped open, the lower flip door can drive the crank 21 to move relative to it by driving the connecting rod 20, and the first pull rod 23 is rotatably connected to the crank 21, so when the crank 21 and the connecting rod 20 move relative to each other, the first pull rod 23 and the second pull rod 24 will also be driven to move relative to each other synchronously;

[0031] The damping mechanism 3 includes a fixed seat 30 fixedly installed in the shell 1, and damping blocks located at both ends of the fixed seat 30, the damping blocks are divided into an upper damping block 31 and a lower damping block 32, and are respectively located at both ends of the fixed seat 30, and the upper damping block 31 and the lower damping block 32 can both be limited and slidably matched in the shell 1, and a damping head 310 is provided on the upper damping block 31 and the lower damping block 32, and a damper is embedded in the fixed seat 30, and there are two dampers embedded in the fixed seat 30, namely a first damper 301 and a second damper 302, and the upper damping block 31 is provided with two damping heads 310, which can respectively abut against the upper ends of the first damper 301 and the second damper 302, and the lower damping block 32 is only provided with one damping head 310, which is only provided with one damping head 310. The second pull rod 24 can abut against the lower end of the first damper 301, and the other end of the second pull rod 24 is rotatably connected to the upper damping block 31. Therefore, when the lower flip door is flipped down and opened, the lower flip door is first pushed downward by hand. At this time, the lower flip door will drive the crank 21, the first pull rod 23 and the second pull rod 24 to produce relative movement through the connecting rod 20. When the second pull rod 24 moves relatively, it will move downward, so the second pull rod 24 pulls the upper damping block 31 downward, so that the damping head 310 located on the upper damping block 31 abuts against the first damper 301 and the second damper 302 located in the fixed seat 30, and then the kinetic energy of the lower flip door when flipping down is successively transmitted from the second pull rod 24 to the damping mechanism 3, and the damping blocks and dampers in the damping mechanism 3 act on the lower The kinetic energy of the flip door when it flips down is relieved and stabilized, thereby relieving the speed of the flip door when it flips down and opens, thereby ensuring that the flip door can be opened slowly when it flips down and avoids injuring the user by too fast a speed, and when the flip door is opened to 45 degrees, the flip door will automatically open downward due to the gravity of the flip door itself. When the flip door automatically flips down due to gravity, the downward kinetic energy of the flip door will continue to drive the connecting rod mechanism 2 to produce relative movement, so that the second pull rod 24 continues to drive the upper damping block 31 to press downward, and then the downward speed of the flip door continues to be relieved and stabilized by the damping mechanism 3, so that the flip door can always keep opening at a slow downward speed. When the opened flip door needs to be closed, the flip door is lifted by hand at this time. The connecting rod mechanism 2 will also produce relative motion successively. Since one end of the crank 21 is provided with a cam 210 rotatably connected thereto, and the arc surface of the cam 210 abuts against the upper surface of the spring 22, when the connecting rod mechanism 2 produces relative motion, the cam 210 will also rotate to press the spring 22 downward, and a spring 220 is provided under the spring 22, so when the spring 22 is pressed downward, the spring 220 will be compressed, thereby obtaining an upward elastic force. When the lower flip door is further flipped up and closed until the connection between the connecting rod 20 and the crank 21 presses against the bottom of the lower damping block 32, the upward elastic force of the spring 220 is transmitted to the crank 21 through the cam 210, and then transmitted to the lower damping block 32 by the crank 21. At this time, the elastic force of the spring 220 will push the crank 21 up.During the rising process of the crank 21, the connecting rod 20 will move relative to it, so as to retract and close the lower flip door, and during the rising process of the crank 21, the lower damping block 32 will be pushed to slide and rise in the housing 1, and during the rising process of the lower damping block 32, the damping head 310 located on the lower damping block 32 will support the lower end of the first damper 301, so that the kinetic energy of the upward movement of the crank 21 is relieved and stabilized by the lower damping block 32 and the first damper 301, so that the crank 21 can maintain a slow and stable rise due to the elastic force of the spring 220, that is, the lower flip door can be closed slowly and stably.

[0032] During the entire process of opening or closing the downward-flipping door, no direct friction and wear occurs between the connecting rod mechanism 2 and the damping mechanism 3. The turning force of the downward-flipping door is alleviated by utilizing the connecting rod mechanism 2 to push down or push up the upper damping block 31. Therefore, the service life of the damping mechanism 3 can be effectively guaranteed. Even if it is used for a long time, there will be no wear and tear that will lead to a decrease in damping performance, thereby effectively ensuring the long-term use stability and safety of the hidden downward-flipping support device.

[0033] In order to ensure that the second pull rod 24 can move longitudinally upward or downward during the movement, a fixedly installed guide rod 25 is also provided in the shell 1, and a strip-shaped guide hole 240 is provided on the second pull rod 24, and the guide rod 25 passes through the guide hole 240 and is limited and slidably matched therewith, so that the second pull rod 24 can only move longitudinally up and down along the guide rod 25 during the opening or closing of the lower flip door, thereby being able to pull the upper damping block 31 to be pressed longitudinally downward, and a vertically downward guide groove 303 is also provided on one side of the fixed seat 30, and the second pull rod 24 is also located in the guide groove 303 and is limited and slidably matched therewith, by providing a guide rod 25 in the shell 1 and a guide groove 303 on one side of the fixed seat 30, the guide hole 240 is limited and slidably matched with the guide rod 25, and then the second pull rod 24 is limited and slidably matched with the guide groove 303, thereby being able to effectively ensure that the second pull rod 24 can maintain a straight line to pull the lower damping block 32 downward during the descent process.

[0034] A sliding button 4 is also provided on the housing 1. The sliding button 4 is provided with a connecting rod 40 rotatably connected to the sliding button 4 at one end. The other end of the connecting rod 40 is provided with a sliding block 41 rotatably connected to the sliding button 4. Since the first damper 301 and the second damper 302 are respectively provided in the fixing seat 30, and the lower damping block 32 is provided with only one damping head 310 abutting against the lower end of the first damper 301, and the upper damping block 31 is provided with two damping heads 310 which can abut against the first damper 301 and the second damper 302 respectively, when the mass of the lower flip door is light, at this time, since the gravitational potential energy of the lower flip door itself is small, The downward turning power potential energy is small during the turning process, so the sliding button 4 can be pushed at this time, so that the sliding button 4 drives the connecting rod 40 and the sliding block 41 to slide to the upper end of the second damper 302, thereby contacting the second damper 302, preventing the second damper 302 from popping out of the fixing seat 30 and contacting one of the damping heads 310 on the upper damping block 31. In this way, when the lighter downward turning door is turned down and opened, only one of the damping heads 310 in the upper damping block 31 contacts the first damper 301, so that the downward turning power of the downward turning door can only be generated by the first damper 301 and one of the damping heads 310 in the upper damping block 31. The damping mechanism 3 is used to relieve the resistance of the damping mechanism 3, so as to ensure that the light-weight downward flip door can be completely opened downward. If the slider 41 does not slide to the top of the second damper 302 to limit it, then when the downward flip door is opened, the dynamic potential energy of the downward flip will be relieved by the first damper 301 and the second damper 302, as well as the two damping heads 310. Then, due to the large resistance of the damping mechanism 3, the light-weight downward flip door may not be able to open completely by its own gravity potential energy. When the downward flip door is heavy, the downward flip door has a large gravity potential energy, so the speed of the downward flip door by its own gravity is also fast. At this time, the slide button 4 can be slid to make the connecting rod 40 drive the slider 41 to withdraw from above the second damper 302, so that the two damping heads 310 on the upper damping block 31 are in contact with the first damper 301 and the second damper 302 respectively. At this time, the excessive downward speed caused by the excessive weight of the downward flip door can be alleviated and stabilized by the two damping heads 310 and the first damper 301 and the second damper 302. Therefore, when facing a heavy downward flip door that relies on the gravity potential energy to flip open, it can also ensure that it can flip down and open slowly and stably, avoiding the excessive downward flip speed caused by the excessive weight and injuring the user.

[0035] An upper bushing 10 is also provided at the upper end of the shell 1. When the lower flip door is closed, the second pull rod 24 is driven to rise, thereby driving the upper damping block 31 to slide upward, and the upper bushing 10 can limit the upper damping block 31, and the connecting rod mechanism 2 and the damping mechanism 3 are both embedded in the shell 1. The shell 1 is formed by wrapping the left and right iron shells together. A strip opening 12 is provided on the shell 1. The strip opening 12 is mainly used for the connecting rod mechanism 2 to extend from the strip opening 12 and connect with the lower flip door. Therefore, arranging the connecting rod mechanism 2 and the damping mechanism 3 in the square shell 1 can effectively reduce the volume of the entire lower flip support device. When the lower flip support device is installed on the cabinet, it can effectively achieve the effect of hiding and not occupying space, thereby improving the overall aesthetics.

[0036] Example 2: Please refer to Figure 8 The present invention also provides another technical solution, a bottom-flipping door storage cabinet, which is provided with any hidden bottom-flipping support device in the above-mentioned embodiment 1, and the bottom-flipping door storage cabinet includes a cabinet body 5 and a bottom-flipping door 6 rotatably connected to the cabinet body 5, and the shell body 1 is embeddedly installed on both sides of the cabinet body 5. By opening a mounting groove with a volume equal to that of the shell body 1 on the cabinet body 5, the shell body 1 can be hiddenly installed on both sides of the cabinet body 5, and then the connecting bracket 201 is fixedly installed on the bottom-flipping door 6, and the hidden bottom-flipping support device can be installed and applied to the bottom-flipping door storage cabinet. By providing the hidden bottom-flipping support device on the bottom-flipping door storage cabinet, the bottom-flipping door 6 can effectively ensure that it is slowly flipped down and opened when opened, so as to avoid injuring the user due to excessive flipping speed.

[0037] The working principle or beneficial effect of the utility model is as follows: by arranging a connecting rod mechanism 2 and a damping mechanism 3 in the shell body 1, one end of the connecting rod mechanism 2 is connected to the down-flip door, and the other end of the connecting rod mechanism 2 is in transmission cooperation with the damping mechanism 3. When the down-flip door is flipped down and opened, the connecting rod mechanism 2 will drive the damping block to be pressed down, thereby transferring the downward kinetic energy to the damper through the damping head 310, and the damper will relieve and stabilize the movement kinetic energy of the connecting rod mechanism 2, thereby slowing down the down-flipping speed of the down-flip door to avoid injuring the user due to excessive speed. By utilizing the damping head 310 to abut against the end of the damper, the kinetic energy on the connecting rod mechanism 2 is converted to the damper for relief. During the use of the down-flip door, there is no direct wear on the damping mechanism 3, thereby being able to maintain the stability of the hidden down-flip device for the down-flip door during the down-flipping process for a long time, thereby ensuring the safety during use for a long time.

[0038] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hidden flip-down support device, characterized in that: It includes a shell, in which a connecting rod mechanism at one end is provided for connecting to the downward flip door, and a damping mechanism which cooperates with the other end of the connecting rod mechanism to reduce the downward flipping speed of the downward flip door. The damping mechanism includes a damper and a damping block which cooperates with the shell for limiting sliding. The damping block is provided with a damping head, which abuts against the end of the damper.

2. The hidden downward-folding support device according to claim 1, characterized in that: The connecting rod mechanism comprises a connecting rod, a crank with one end rotatably connected to one end of the connecting rod, a connecting bracket rotatably connected to the other end of the connecting rod, and a cam rotatably connected to the other end of the crank.

3. The hidden downward-folding support device according to claim 2, characterized in that: The shell is provided with an elastic sheet rotatably connected thereto, a spring is provided at the lower end of the elastic sheet, and the cam abuts against the upper surface of the elastic sheet.

4. The hidden downward-folding support device according to claim 2, characterized in that: The connecting rod mechanism also includes a first pull rod with one end rotatably connected to the crank, a second pull rod with one end rotatably connected to the other end of the first pull rod, and the other end of the second pull rod is connected to the damping block.

5. The hidden downward-folding support device according to claim 4, characterized in that: A guide rod is provided in the shell, and a guide hole is provided in the second pull rod. The guide rod and the guide hole are limitedly slidably matched.

6. The hidden downward-folding support device according to claim 1, characterized in that: The damping mechanism further comprises a fixing seat fixedly mounted on the shell, and the damper comprises a first damper and a second damper, and the first damper and the second damper are both arranged in the fixing seat.

7. The hidden downward-folding support device according to claim 6, characterized in that: The damping block comprises an upper damping block and a lower damping block, the upper damping block and the lower damping block are respectively located at two ends of the fixing seat and are slidingly matched with the inner limit position of the shell, and the damping heads on the upper damping block and the lower damping block are respectively abutted against two ends of the first damper.

8. The hidden downward-folding support device according to claim 6, characterized in that: The shell is also provided with a sliding button that slidably cooperates. The sliding button is provided with a connecting rod with one end rotatably connected thereto. The other end of the connecting rod is provided with a sliding block rotatably connected thereto. The sliding block can slide to the upper end of the second damper and abut against the second damper.

9. The hidden downward-folding support device according to claim 3, characterized in that: An upper bushing is arranged at the upper end of the shell, a lower bushing is arranged at the lower end of the shell, and the spring is arranged in the lower bushing.

10. A storage cabinet with a downward-flipping door, characterized in that: The flip-down door storage cabinet is provided with any hidden flip-down support device in claims 1-9, comprising a cabinet body and a flip-down door rotatably connected to the cabinet body, the shell body is embedded in the cabinet body, and the connecting bracket is fixedly installed on the flip-down door.

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