Toilet cover slow descent mechanism

Abstract

The utility model relates to a kind of toilet cover slow descent mechanism, it is characterized in that, including shell assembly, transmission shaft, piston, check valve and flow guide column, wherein, the piston can spiral rotation be located in the shell assembly, and between the shell assembly is equipped with sealing element, the transmission shaft is coaxially arranged in the piston with flow guide column, and keep over-flow gap between the piston, the check valve is located between the transmission shaft and the flow guide column, first oil gap, second oil gap and oil groove are equipped on the flow guide column. By the above structure, the utility model can realize the opening and closing of toilet cover Sectional Precision Control, stable structure, reliable.

Description

Technical Field

[0001] This utility model relates to the field of sanitary ware, and in particular to a toilet seat soft-close mechanism. Background Technology

[0002] Currently, all existing plunger-type dampers include a piston, which is often used in conjunction with a one-way valve ring, such as the "damping structure" disclosed in Chinese patent application number CN201310683625.8. This structure is not only complex, but the one-way valve ring also has poor functional stability, thus affecting the overall structural stability.

[0003] For the reasons mentioned above, the inventors have proposed a better solution. Summary of the Invention

[0004] The purpose of this utility model is to provide a toilet seat soft-close mechanism, which has the advantages of simple structure and stable and reliable operation.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A toilet seat soft-close mechanism includes a housing assembly, a drive shaft, a piston, a one-way valve, and a guide column. The piston is helically rotatable within the housing assembly and is sealed to the housing assembly. The drive shaft and guide column are coaxially disposed within the piston, maintaining a flow clearance between them. The one-way valve is located between the drive shaft and the guide column. The guide column has a first oil passage notch, a second oil passage notch, and an oil passage groove. When the drive shaft initially rotates clockwise relative to the housing assembly, the one-way valve opens, and damping oil flows from the high-pressure chamber through the second oil passage notch, the first oil passage notch, and the flow clearance. The low-pressure chamber has relatively low damping. When the drive shaft rotates clockwise relative to the housing assembly to the latter half of its rotation, the one-way valve remains open. The damping oil flows from the high-pressure chamber to the low-pressure chamber through the second oil passage notch, the first oil passage notch, and the flow gap, and also flows through the oil groove and the flow gap, resulting in even lower damping. When the drive shaft rotates counterclockwise relative to the housing assembly to the initial rotation, the one-way valve closes. The damping oil flows from the high-pressure chamber to the low-pressure chamber through the flow gap and the oil groove, resulting in relatively low damping. When the drive shaft rotates counterclockwise relative to the housing assembly to the latter half of its rotation, the one-way valve remains closed, the gap between the guide column and the piston reaches its minimum, and the damping reaches its maximum.

[0006] Preferably, the piston outer wall is provided with a sealing groove, and a sealing ring is provided in the sealing groove.

[0007] Preferably, the piston has a transmission rib groove inside, the transmission shaft includes a handle and a transmission part, the transmission part has a transmission rib, and the transmission rib has an idle notch.

[0008] Preferably, the one-way valve includes a guide post, an elastic rib, and a valve body, wherein the valve body is provided with a guide surface.

[0009] Preferably, the guide column is provided with an oil-sealing slope for use with the one-way valve.

[0010] Preferably, the outer surface of the piston is provided with rotating threads, and the inner wall of the housing is provided with rotating thread grooves.

[0011] Preferably, the housing assembly includes a housing and a pressure cap, the drive shaft passes through the sealed cavity formed by the housing and the pressure cap, and a gasket and a sealing ring are provided between the drive shaft and the pressure cap.

[0012] Preferably, the bottom of the housing is provided with a fixing groove for connecting the guide column.

[0013] With the above structure, this utility model can achieve segmented precision control of the opening and closing of the toilet seat, and the structure is simpler, more stable and reliable. Attached Figure Description

[0014] Figure 1 This is an exploded view of the overall structure of the present invention.

[0015] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0016] Figure 3 This is a cross-sectional view of the internal structure of the housing of the present invention.

[0017] Figure 4 This is a three-dimensional structural diagram of the transmission shaft of the present invention.

[0018] Figure 5 This is a three-dimensional structural diagram of the piston of the present invention.

[0019] Figure 6 This is a cross-sectional view of the piston structure of the present invention.

[0020] Figure 7 This is a longitudinal cross-sectional view of the guide column of the present invention.

[0021] Figure 8 This is a three-dimensional structural view of the guide column of the present invention.

[0022] Figure 9 This is a three-dimensional structural view of the one-way valve of the present invention.

[0023] Figure 10 This is a perspective view of the invention in the initial stage of clockwise rotation.

[0024] Figure 11This is a longitudinal sectional view of the three-dimensional structure of the present invention during the first half of clockwise rotation.

[0025] Figure 12 This is a cross-sectional view of the transverse structure of the present invention during the first half of clockwise rotation.

[0026] Figure 13 This is a longitudinal structural cross-sectional view of the invention during the first half of a clockwise rotation.

[0027] Figure 14 This is a three-dimensional view of the internal structure of the present invention during the latter half of its clockwise rotation.

[0028] Figure 15 This is a cross-sectional view of the invention during the latter half of its clockwise rotation.

[0029] Figure 16 This is a three-dimensional structural cross-sectional view of the invention in the initial stage of counterclockwise rotation.

[0030] Figure 17 This is a three-dimensional view of the internal structure of the present invention during the first half of its counterclockwise rotation.

[0031] Figure 18 This is a cross-sectional view of the transverse structure of the present invention during the first half of its counterclockwise rotation.

[0032] Figure 19 This is a longitudinal structural cross-sectional view of the invention during the first half of its counterclockwise rotation.

[0033] The technical solution and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings. Detailed Implementation

[0034] like Figure 1 and Figure 2 As shown, a toilet seat soft-close mechanism includes a housing assembly 1, a drive shaft 2, a piston 3, a one-way valve 4, and a guide column 5.

[0035] Among them, combined Figure 3 As shown, the housing assembly 1 includes a housing 11 and a pressure cap 12, and the housing 11 and the pressure cap 12 are fixedly connected to form a cavity. The inner side of the housing 11 is provided with a rotating threaded groove 111 near the top, and a fixing groove 112 is provided at the bottom.

[0036] like Figure 4 As shown, the drive shaft 2 passes through the cavity formed by the housing 11 and the pressure cover 12. A washer 13 and a sealing ring 14 are also provided between the drive shaft 2 and the pressure cover 12. The drive shaft 2 includes a handle 21 and a transmission part 22. The transmission part 22 is provided with a transmission rib 221, and the transmission rib 221 is provided with a free-spinning notch 220. A positioning post 222 is provided at the bottom of the transmission part 22.

[0037] like Figure 5 and Figure 6 As shown, piston 3 is helically rotatable within housing assembly 1. Specifically, the outer surface of piston 3 is provided with rotating threads 31, which mate with rotating thread grooves 111 on the inner wall of housing 11. Below the rotating threads 31, evenly distributed guide grooves 32 are provided, and oil passage holes 321 are spaced apart at the bottom of the guide grooves. The outer wall of piston 3 is also provided with a sealing groove 30, within which a sealing ring 6 is provided. Piston 3 is internally provided with a transmission rib groove 33.

[0038] The drive shaft 2 and the guide column 5 are coaxially mounted inside the piston 3, maintaining a flow clearance between them. Figures 7 to 9 As shown, one end of the guide column 5 is connected to the drive shaft 2, and the other end is connected to the fixing groove 112. The guide column 5 has a first oil passage notch 51, a second oil passage notch 52, and an oil passage groove 53. An oil-sealing inclined surface 54 is provided inside the guide column 5. A one-way valve 4 is located between the drive shaft 2 and the guide column 5, and cooperates with the oil-sealing inclined surface 54. The one-way valve 4 includes a guide column 41, an elastic rib 42, and a valve body 43. The valve body 43 has guide surfaces 431 on both sides, which are oriented to cooperate with the inner wall surface of the guide column 5. The elastic rib 42 here can also be designed as other elastic components, such as a spring.

[0039] The aforementioned soft-close mechanism is mostly used in toilet seats to precisely control the raising and lowering process of the toilet seat. The specific process is as follows: like Figures 10 to 13 As shown, in the initial state, the toilet seat is closed. At this time, the piston 3 is at its highest point relative to the housing 11. When the toilet seat is to be lifted, the drive shaft 2 rotates clockwise relative to the housing assembly 1. At the same time, the one-way valve 4 opens, and the piston 3 moves from top to bottom. The damping oil flows from the high-pressure chamber at the bottom to the low-pressure chamber at the top through the second oil passage 52, the first oil passage 51, and the flow gap, resulting in relatively low damping. When the drive shaft 2 rotates clockwise relative to the housing assembly 1 to the second half of its rotation, the one-way valve 4 remains open. In addition to flowing from the high-pressure chamber to the low-pressure chamber through the second oil passage 52, the first oil passage 51, and the flow gap, the damping oil also flows from the high-pressure chamber to the low-pressure chamber through the oil trough 53 and the flow gap, resulting in even lower damping. When the toilet seat is opened to more than 80°, as... Figure 14 and Figure 15 As shown, the idle notch 220 on the drive shaft 2 and the drive groove 33 of the piston 3 form an idle engagement when opening, so that the toilet seat opens very smoothly within this angle range without any rebound damping effect. The idle angle here should be controlled between 20 and 30 degrees to avoid the seat from failing to stand up and fall back to close. The toilet seat is easily lifted and held to the desired position.

[0040] When you want to close the toilet seat, as Figures 16 to 19As shown, the drive shaft 2 rotates counterclockwise relative to the housing assembly 1. The drive shaft 2 rotates through a free rotation angle. During this process, the toilet seat closes very smoothly within this angle range without any damping effect. Then, the side of the drive shaft 2 without the free rotation notch 220 forms a contact with the drive rib groove 33 of the piston 3. The drive shaft 2 drives the piston 3 to rotate relative to the housing 11. The one-way valve 4 closes, and the piston 3 moves from bottom to top. The damping oil flows through the flow gap and the oil groove 53 from the high-pressure chamber at the top to the low-pressure chamber at the bottom. The damping is small, and the toilet seat falls quickly. When the drive shaft 2 rotates counterclockwise relative to the housing assembly 1 to the second half of the stroke, the one-way valve 4 remains closed. The gap between the guide column 5 and the piston 3 reaches its minimum, and the damping is maximum. The toilet seat closes slowly, and the piston 3 returns to its initial state.

[0041] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any improvements or equivalent substitutions made based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A toilet seat soft-close mechanism, characterized in that, The system includes a housing assembly, a drive shaft, a piston, a one-way valve, and a guide column. The piston is helically rotatable within the housing assembly and is sealed to the housing assembly. The drive shaft and guide column are coaxially mounted within the piston, maintaining a flow clearance between them. The one-way valve is located between the drive shaft and the guide column. The guide column has a first oil passage notch, a second oil passage notch, and an oil passage groove. When the drive shaft initially rotates clockwise relative to the housing assembly, the one-way valve opens, allowing damping oil to flow from the high-pressure chamber to the low-pressure chamber through the second oil passage notch, the first oil passage notch, and the flow clearance. The damping is relatively small; when the drive shaft rotates clockwise relative to the housing assembly to the second half of its rotation, the one-way valve remains open, and the damping oil flows from the high-pressure chamber to the low-pressure chamber through the second oil passage notch, the first oil passage notch, and the flow gap, while also flowing from the high-pressure chamber to the low-pressure chamber through the oil groove and the flow gap, resulting in even smaller damping; when the drive shaft rotates counterclockwise relative to the housing assembly to the first half of its rotation, the one-way valve closes, and the damping oil flows from the high-pressure chamber to the low-pressure chamber through the flow gap and the oil groove, resulting in even smaller damping; when the drive shaft rotates counterclockwise relative to the housing assembly to the second half of its rotation, the one-way valve remains closed, the gap between the guide column and the piston reaches its minimum, and the damping reaches its maximum.

2. The toilet seat soft-close mechanism as described in claim 1, characterized in that, The piston has a sealing groove on its outer wall, and a sealing ring is provided in the sealing groove.

3. A toilet seat soft-close mechanism as described in claim 1, characterized in that, The piston has a transmission rib groove inside, and the transmission shaft includes a handle and a transmission part. The transmission part has a transmission rib, and the transmission rib has a free-spinning notch.

4. A toilet seat soft-close mechanism as described in claim 1, characterized in that, The one-way valve includes a guide post, an elastic rib, and a valve body, wherein the valve body is provided with a guide surface.

5. A toilet seat soft-close mechanism as described in claim 4, characterized in that, The guide column is equipped with an oil-sealing slope for use with the one-way valve.

6. A toilet seat soft-close mechanism as described in claim 1, characterized in that, The housing assembly includes a housing and a pressure cap. The drive shaft passes through the sealed cavity formed by the housing and the pressure cap. A gasket and a sealing ring are also provided between the drive shaft and the pressure cap.

7. A toilet seat soft-close mechanism as described in claim 6, characterized in that, The piston has rotating threads on its outer surface, and the housing has rotating thread grooves on its inner wall.

8. A toilet seat soft-close mechanism as described in claim 6, characterized in that, The bottom of the housing is provided with a fixing groove for connecting the guide column.

Images