Rotary damper with oil supplementing cavity and closestool turning cover
By introducing an oil reservoir and a pre-pressure chamber into the rotary damper, rapid oil replenishment and pressure regulation are achieved, solving the problem of insufficient pressure bearing capacity under small damping working angle and improving the slow-closing effect of the toilet seat.
Patent Information
- Application Number
- CN202422846562.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing unidirectional rotary dampers have poor pressure resistance at small damping working angles, resulting in poor damping effect and affecting the slow-closing effect of toilet seats.
The design incorporates a rotary damper with an oil replenishment chamber, including a working chamber and an oil reservoir. The oil is rapidly replenished and its pressure is regulated through a connecting hole, ensuring sufficient oil volume and maintaining a certain pressure to enhance the damping response speed.
The pressure-bearing capacity of the rotary damper within a small damping working angle range has been improved, thus increasing the slow-closing speed and response speed of the toilet seat.
Smart Images
Figure CN223549122U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of toilet accessories, and in particular to a rotary damper with an oil filling chamber and a toilet lid. Background Technology
[0002] The main function of the rotary damper in a toilet seat is to enable the slow-closing function of the toilet seat. It slows down the closing speed of the lid, ensuring a smooth closure and preventing noise or damage to the toilet when closing. The main components of the rotary damper include damping fluid and the damper itself. When the user releases the toilet seat, the damping fluid in the damper generates a damping force as the damper moves, thus causing the toilet seat to close slowly.
[0003] To facilitate user-controlled opening and closing, the rotary damper is a unidirectional type. However, existing unidirectional rotary dampers do exhibit poor damping capacity at small damping operating angles due to insufficient oil volume on the pressure-bearing side of the working oil chamber. This is because the working principle of a rotary damper relies on the friction and viscosity within the damper to dissipate the energy of the rotating system. When the operating angle of the rotary damper is small, the amount of oil in the oil chamber may be insufficient to provide adequate damping force, resulting in poor damping performance. Furthermore, the torque is also affected by the oil contact area, the fluid clearance, and the viscosity of the viscous grease. At small operating angles, the oil contact area may be small, thus affecting the damper's pressure-bearing capacity. Utility Model Content
[0004] The main technical problem to be solved by this utility model is to provide a rotary damper with an oil replenishment chamber, which improves the pressure bearing capacity of the rotary damper in the small damping working angle range, thereby improving the damping response speed.
[0005] To solve the above-mentioned technical problems, this utility model provides a rotary damper with an oil replenishment chamber. The rotary damper includes a housing, a rotating shaft, and blades. The housing includes two cavities, one of which is a working cavity and the other is an oil storage cavity.
[0006] A pre-compression chamber is provided in one cavity, and the pre-compression chamber and the working chamber are located in the same cavity. The pre-compression chamber is connected to the oil storage chamber.
[0007] The blade and the rotating shaft are assembled in the working chamber. The blade is in contact with the inner wall of the working chamber. The rotating shaft drives the blade to rotate along the inner wall of the working chamber. The gap created by the rotation of the rotating shaft and the blade forms an oil passage. The oil passage connects the working chamber and the pre-compression chamber.
[0008] In a preferred embodiment, the oil storage chamber includes a pressure regulating element for adjusting the oil chamber pressure.
[0009] In a preferred embodiment, the oil storage chamber includes a threaded opening, and an adjusting nut is screwed onto the threaded opening. The adjusting nut can be screwed inward along the oil storage chamber a certain distance; the adjusting nut is configured as the pressure regulating component.
[0010] In a preferred embodiment, two first oil baffles are symmetrically arranged in the working chamber, and the space of the pre-compression chamber is the space between the rotating shaft and the first oil baffles from the closed position to the opening angle a°; the range of a° is set between 20° and 40°.
[0011] The pre-compression chamber is configured as two chambers, located on opposite sides of the two first oil baffles; a connecting hole is provided within the space of the pre-compression chamber.
[0012] In a preferred embodiment, the rotating shaft is symmetrically provided with two second oil-blocking ribs, and two blades are correspondingly assembled thereon; the blades are slotted, and the second oil-blocking ribs are placed in the slots;
[0013] When the shaft rotates, the second oil baffle rib fits into the groove with a clearance to form an oil passage.
[0014] In a preferred embodiment, the rotation process of the rotating shaft includes three states; wherein, the first state is a closed state, and the rotating shaft rotates at an angle of 0°; the second state is an intermediate state, and the rotating shaft is in the process of rotation; and the third state is an open state, and the rotating shaft rotates to the maximum angle, which is the maximum angle that the rotating shaft can rotate.
[0015] In the first state, the rotating shaft and the first oil baffle are open at an angle of a°; in the third state, the rotating shaft and the first oil baffle are in contact.
[0016] In a preferred embodiment, the second state includes an opening process state and a closing process state, wherein the opening process state is to open the oil passage and the blade passes through the oil, and the closing process state is to close the oil passage and the blade does not pass through the oil.
[0017] In a preferred embodiment, the blade is provided with oil-passing notches on both sides of its groove, and the blade is provided with an oil-sealing surface and an oil-scraping surface on one side of its groove, with the oil-sealing surface located inside the groove and the oil-scraping surface located outside the groove.
[0018] The oil scraping surface is located on the side facing the connecting hole.
[0019] In a preferred embodiment, the rotating shaft is symmetrically provided with two oil passage grooves, both of which can allow oil to pass through.
[0020] The oil passage is located on the side opposite to the connecting hole.
[0021] This utility model also provides a toilet lid, including a rotary damper with an oil filling chamber: when the lid is opened, the rotary damper opens, and the relative movement of the blade and the rotating shaft creates a gap to form an oil passage, through which damping oil flows; when the lid is reset, the rotary damper closes, and the relative movement of the blade and the rotating shaft closes the gap, through which damping oil flows.
[0022] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:
[0023] 1. This rotary damper has two chambers: a working chamber for the damper's slow descent process and an oil storage chamber for replenishing and pressurizing oil. The two chambers are connected, and the rapid oil return scheme ensures sufficient oil volume and maintains a certain pressure in the working chamber. At the same time, a pre-compression chamber is designed in the working chamber to ensure that the shaft has a pre-compression buffering effect during rapid response. Sufficient oil volume and a certain pressure in the oil chamber ensure that the working chamber can replenish oil in a timely manner during operation, accelerating the damper's response speed.
[0024] 2. Improve the pressure-bearing capacity of the rotary damper within the small damping working angle range, thereby improving the damping response speed. Attached Figure Description
[0025] Figure 1 This is an exploded view of the rotary damper in a preferred embodiment of the present invention;
[0026] Figure 2 This is a schematic diagram of the working cavity of the outer shell in a preferred embodiment of the present invention;
[0027] Figure 3 This is a schematic diagram of the oil storage cavity of the outer shell in a preferred embodiment of the present invention;
[0028] Figure 4 This is a structural diagram of the rotating shaft in a preferred embodiment of the present invention;
[0029] Figure 5 This is a structural diagram of the oil groove on the rotating shaft in a preferred embodiment of the present invention;
[0030] Figure 6 This is a structural diagram of the blade with grooves in a preferred embodiment of the present invention;
[0031] Figure 7 This is a structural diagram of the blade oil-scraping surface in a preferred embodiment of the present invention;
[0032] Figure 8 This is a diagram showing the oil reservoir adjusting nut in its maximum open state in a preferred embodiment of this utility model.
[0033] Figure 9This is a diagram showing the minimum closed state of the oil reservoir adjusting nut in a preferred embodiment of the present invention;
[0034] Figure 10 This is a diagram showing the first state of rotation of the rotary damper shaft in a preferred embodiment of the present invention.
[0035] Figure 11 This is a diagram showing the second state of rotation of the rotary damper shaft in a preferred embodiment of the present invention.
[0036] Figure 12 This is a diagram showing the third state of rotation of the rotary damper shaft in a preferred embodiment of this utility model.
[0037] Figure 13 This is a schematic diagram of the blade oiling process during the opening of the rotary damper in a preferred embodiment of the present invention;
[0038] Figure 14 This is a schematic diagram showing the blades not being oiled during the closing process of the rotary damper in a preferred embodiment of this utility model.
[0039] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Working chamber; 12. Oil storage chamber; 13. Pre-compression chamber; 14. Oil passage; 15. Connecting hole; 16. First oil baffle; 17. Threaded end; 18. Positioning hole; 2. Rotating shaft; 21. Oil groove; 22. Second oil baffle; 23. Positioning cylinder; 3. Blade; 31. Groove; 32. Oil passage notch; 33. Oil sealing surface; 34. Oil scraping surface; 4. Sealing ring; 5. Gasket; 6. Pressure cap; 7. Adjusting nut. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0041] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0043] refer to Figure 1 This embodiment provides a rotary damper with an oil replenishment chamber. The rotary damper consists of a pressure cap 6, two sealing rings 4, a gasket 5, a rotating shaft 2, a housing 1, and an adjusting nut 7. Two interconnected cavities are provided inside the housing 1. One cavity is a working cavity 11, providing space for the rotating shaft 2 to rotate; the other cavity is an oil storage cavity 12, used to replenish and pressurize the working cavity 11.
[0044] A pre-compression chamber 13 is provided in one of the cavities. The pre-compression chamber 13 and the working chamber 11 are located in the same cavity. A connecting hole 15 is provided between the pre-compression chamber 13 and the oil storage chamber 12 for communication. The oil storage chamber 12 includes a pressure regulating component for adjusting the oil chamber pressure.
[0045] A threaded opening 17 is provided at the bottom of the oil storage cavity 12 (e.g., ...). Figure 2 The adjusting nut 7 is screwed onto the threaded end 17. The adjusting nut 7 can be screwed inward a certain distance along the oil reservoir 12. The adjusting nut 7 is configured as a pressure regulating component. During the manufacturing process of the rotary damper, the adjusting nut 7 is pre-installed in the maximum open state (e.g., ...). Figure 8 The damper undergoes lubrication and assembly. After complete assembly, the adjusting nut 7 is tightened to the minimum position (e.g., ...). Figure 9 In this way, by compressing the damping oil in the oil storage chamber 12, the oil is replenished into the working chamber 11 through the connecting hole 15, so that the working chamber 11 is filled more fully and the oil pressure in the oil storage chamber 12 and the working chamber 11 is increased, so that the oil has a certain pressure and the oil returns to the chamber faster.
[0046] The rotating shaft 2 and the blade 3 are fitted into the working chamber 11, and the blade 3 is in contact with the inner wall of the working chamber 11. The rotating shaft 2 drives the blade 3 to rotate along the inner wall of the working chamber 11, and the gap generated by the relative rotation of the rotating shaft 2 and the blade 3 forms an oil passage 14, which connects the working chamber 11 and the pre-compression chamber 13. The outer shell 1 is provided with a partition, which separates two interconnected cavities. The partition is provided with a positioning hole 18, and the bottom of the rotating shaft 2 is provided with a positioning cylinder 23 for positioning and assembly.
[0047] Two first oil baffles 16 are symmetrically arranged in the working chamber 11 (e.g. Figure 3 The space of the pre-compression chamber 13 is the distance from the closed position to the opening angle a° between the rotating shaft 2 and the first oil baffle 16, where a° is set within the range of 20°-40°. Two pre-compression chambers 13 are provided, located on opposite sides of the two first oil baffles 16. The space of the pre-compression chamber 13 is set to the distance from the closed position to the opening angle 25° between the rotating shaft 2 and the first oil baffle 16 (e.g., ...). Figure 10 A connecting hole 15 is provided within this space. The opening angle can be set to 30° or 40°, but is preferably set to 25°.
[0048] The rotating shaft 2 includes an oil groove 21 and a second oil baffle 22 (as shown in the image). Figure 4 , Figure 5 The rotating shaft 2 is symmetrically provided with two second oil baffles 22, and two blades 3 are correspondingly assembled. The blades 3 have grooves 31, and the second oil baffles 22 are placed in the grooves 31. When the rotating shaft 2 rotates, the second oil baffles 22 and the grooves 31 rotate relative to each other, forming a clearance fit, and the clearance forms an oil passage 14.
[0049] The blade 3 has oil-passing notches 32 on both sides of its groove 31, and an oil-sealing surface 33 and an oil-scraping surface 34 are provided on one side of its groove 31. The oil-sealing surface 33 is located inside the groove 31 (e.g., Figure 6 The oil scraping surface 34 is located on the outside of the groove 31 (e.g., Figure 7 The oil scraping surface 34 is located on the side facing the connecting hole 15. The rotating shaft 2 is symmetrically provided with two oil passage grooves 21. Both the oil passage grooves 21 and the oil passage notch 32 can pass oil. The oil passage grooves 21 are located on the side away from the connecting hole 15.
[0050] During the motion of this rotary damper, the rotation of the shaft 2 includes three states; the first state is a fully closed state, where the rotation angle of the shaft 2 is 0° (e.g., Figure 10 The second state is an intermediate process state, where the rotating shaft 2 is in the process of rotation (e.g., Figure 11 The third state is the fully opened state (rotated to 108°), where the rotating shaft 2 rotates to its maximum angle, which is the maximum angle that the rotating shaft 2 can rotate (e.g., ...). Figure 12 ).
[0051] In the first state, the rotary damper is fully closed, and the shaft 2 and the first oil baffle 16 open at an angle a° to form a pre-compression chamber 13. In the third state, the blade 3 is in contact with the first oil baffle 16. Damping oil can always be present in the pre-compression chamber 13. The reserved cavity is connected to the oil storage chamber 12 through the connecting hole 15, which can quickly replenish the damping oil in the oil storage chamber 12 into the pre-compression chamber 13, thus accelerating the opening of the shaft 2.
[0052] The second state includes the opening process state and the closing process state. The oil passage method of the rotary damper is different in the opening and closing processes. In the opening process state, the oil passage 14 is opened, and a gap is created between the relative rotation of blade 3 and shaft 2. Oil passes through blade 3 (e.g. Figure 13 In the closed-process state, the oil passage 14 is closed, and the blade 3 and the rotating shaft 2 move relative to each other again, causing the gap to close, and the blade 3 does not pass oil (e.g. Figure 14 During operation, the damping oil passes through the blades 3 and the oil groove 21 of the rotating shaft 2. The oil groove 21 is in an oil-passing state during both opening and closing.
[0053] The working principle of a rotary damper is as follows:
[0054] Rapid oil passage: The damper passes oil through the cooperation of the blades 3 with the outer shell 1 and the rotating shaft 2. When the damper is closed, the blades 3 are completely in contact with the outer shell 1 and the rotating shaft 2, and no oil passes through. The damping oil flows through the oil passage groove 21 for a buffering process. When the damper is open, the blades 3 and the rotating shaft 2 form an oil passage channel 14, and the damping oil flows through. Simultaneously, the damping oil also flows through the oil passage groove 21 of the rotating shaft 2, which allows for rapid oil passage.
[0055] Rapid oil return: The damper has two oil chambers: a working chamber 11 (rotating chamber of shaft 2) and an oil storage chamber 12. The oil storage chamber 12 is connected to the working chamber 11. An adjusting nut 7 is designed in the oil storage chamber 12 to compress the damping oil. The working chamber 11 has a pre-compression chamber 13. When the damper works in the damping direction, a reserved space between the shaft 2 and the outer casing 1 serves as the pre-compression chamber 13, allowing for rapid response when the damper moves in the damping direction. Furthermore, during the damper's machining process, the nut remains open, ensuring sufficient oil in the oil storage chamber 12. After machining, tightening the nut replenishes oil to the working chamber 11 under pressure. Simultaneously, the shrinking of the oil storage chamber 12 pressurizes the oil, accelerating the oil return within the chamber. During operation, the working chamber 11 can be rapidly replenished with oil, accelerating the damper's response speed and improving the angle response speed.
[0056] Low angle: When the shaft 2 rotates at 0°, it opens and then closes quickly. Due to the small cavity size, the oil return is slow, resulting in a slow damper response. Therefore, an oil reservoir 12 and a pre-compression chamber 13 are designed to replenish oil to the working chamber 11 in a timely manner through the channels of the oil reservoir 12 and the pre-compression chamber 13, thereby accelerating the oil replenishment speed, speeding up the damper response, and solving the problem of low angle and fast response speed.
[0057] The rotary damper with an oil filling chamber provided in this embodiment can be used on a toilet lid. When the lid is opened, the rotary damper opens, and the blade 3 moves relative to the rotating shaft 2 to create a gap, forming an oil passage 14. Damping oil flows through the oil passage 14 and the oil groove 21. When the lid is reset, the rotary damper closes, and the blade 3 moves relative to the rotating shaft 2 again to close the gap, allowing the damping oil to flow through the oil groove 21.
[0058] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.
Claims
1. A rotary damper with a replenishing oil chamber, characterized in that: The rotary damper includes a housing, a rotating shaft, and blades; the housing includes two cavities, one of which is a working cavity and the other is an oil reservoir. A pre-compression chamber is provided in one cavity, and the pre-compression chamber and the working chamber are located in the same cavity. The pre-compression chamber is connected to the oil storage chamber. The blade and the rotating shaft are assembled in the working chamber. The blade is in contact with the inner wall of the working chamber. The rotating shaft drives the blade to rotate along the inner wall of the working chamber. The gap created by the rotation of the rotating shaft and the blade forms an oil passage. The oil passage connects the working chamber and the pre-compression chamber.
2. A rotary damper with a replenishing oil chamber according to claim 1, characterized in that: The oil storage chamber includes a pressure regulating component for adjusting the oil chamber pressure.
3. A rotary damper with a replenishing oil chamber according to claim 2, characterized in that: The oil storage chamber includes a threaded opening, and an adjusting nut is screwed onto the threaded opening. The adjusting nut can be screwed inward a certain distance along the oil storage chamber; the adjusting nut is configured as the pressure regulating component.
4. A rotary damper with a replenishing oil chamber according to claim 1, characterized in that: Two first oil baffles are symmetrically arranged in the working chamber. The space of the pre-compression chamber is the space between the rotating shaft and the first oil baffles from the closed position to the opening angle a°; the range of a° is set between 20° and 40°. The pre-compression chamber is configured as two chambers, located on opposite sides of the two first oil baffles; a connecting hole is provided within the space of the pre-compression chamber.
5. A rotary damper with a replenishing oil chamber according to claim 4, characterized in that: The rotating shaft is symmetrically provided with two second oil baffles, and two blades are correspondingly assembled therein; the blades are slotted, and the second oil baffles are placed in the slots; When the shaft rotates, the second oil baffle rib fits into the groove with a clearance to form an oil passage.
6. A rotary damper with a replenishing oil chamber according to claim 5, characterized in that: The rotation process of the shaft includes three states: the first state is the closed state, and the shaft rotates at 0°; the second state is the intermediate state, and the shaft is in the process of rotation; the third state is the open state, and the shaft rotates to the maximum angle, which is the maximum angle that the shaft can rotate. In the first state, the rotating shaft and the first oil baffle are open at an angle of a°; in the third state, the rotating shaft and the first oil baffle are in contact.
7. A rotary damper with a replenishing oil chamber according to claim 6, characterized in that: The second state includes an opening process state and a closing process state. The opening process state is when the oil passage is opened and the blade is oiled. The closing process state is when the oil passage is closed and the blade is not oiled.
8. A rotary damper with a replenishing oil chamber according to claim 5, characterized in that: The blade has oil-passing notches on both sides of its groove, and the blade has an oil-sealing surface and an oil-scraping surface on one side of its groove. The oil-sealing surface is located inside the groove, and the oil-scraping surface is located outside the groove. The oil scraping surface is located on the side facing the connecting hole.
9. A rotary damper with a replenishing oil chamber according to claim 8, characterized in that: The rotating shaft is symmetrically provided with two oil passage grooves, and both the oil passage grooves and the oil passage notch can pass through oil. The oil passage is located on the side opposite to the connecting hole.
10. A toilet seat with a flip-top design, characterized in that: Including a rotary damper with an oil replenishment chamber according to any one of claims 1-9: when the flip cover is opened, the rotary damper is opened, and the relative movement of the blade and the rotating shaft generates a gap to form an oil passage, and the damping oil flows from the oil passage and the oil groove; When the flip cover resets, the rotary damper closes, and the blades move relative to the shaft again to close the gap, the damping oil flows through the oil groove.