Damper, toilet cover and toilet

Abstract

The present invention provides a damper, a toilet cover and a toilet. The damper includes: a housing, which is suitable for filling damping oil; a rotating shaft, which is rotatably arranged on the housing; a piston, which is slidably arranged in the housing, and the piston is connected to the rotating shaft by transmission. The rotating shaft rotates and drives the piston to slide; a flexible seal, which is sleeved outside the piston and can move along the axial direction of the piston. The flexible seal separates the housing and defines a first chamber and a second chamber. The flexible seal also includes an oil passage connecting the first chamber and the second chamber. When the rotating shaft rotates in a first direction, the flexible seal is driven to slide and the first chamber is gradually enlarged, and the second chamber is gradually reduced. The piston presses against and closes the oil passage. The flexible seal is affected by the oil pressure in the second chamber to expand and abut against the inner wall of the housing. The damping oil in the second chamber is squeezed and produces a damping effect on the rotating shaft. The application of this technical solution can realize a damper that is not easy to attenuate and a toilet using the damper.

Description

Technical Field

[0001] The invention relates to the field of bathrooms, and in particular to a damper, a toilet cover and a toilet. Background Art

[0002] Dampers are increasingly used in reality, from large bridges and house buildings to small daily necessities such as coffee machines and toilet lids. Therefore, there are various types of dampers on the market, and the performance and quality of dampers are also uneven. Most of the dampers used in life have a poor experience. Taking the damper used in the toilet lid as an example, friction damping or damping oil is generally used to achieve damping. For friction damping, it is easy to wear after repeated use, and its effect is weakened. For dampers that achieve damping with damping oil, when the damper is in use, the piston body inside it always rubs against the inner wall of the damper housing. After a long time of use, the piston body is prone to wear. Summary of the invention

[0003] The object of the present invention is to overcome at least one of the above-mentioned deficiencies in the prior art and to provide a damper, a toilet cover and a toilet that are not easily attenuated.

[0004] In order to solve the above technical problems, the present invention provides a damper, comprising:

[0005] A housing adapted to be filled with damping oil;

[0006] A rotating shaft, rotatably disposed on the housing;

[0007] A piston member is slidably disposed in the housing, the piston member is drivingly connected to the rotating shaft, and the rotating shaft rotates and drives the piston member to slide;

[0008] A flexible seal is sleeved outside the piston member and can move axially along the piston member. The flexible seal separates the shell and defines a first chamber and a second chamber. The flexible seal also includes an oil passage connecting the first chamber and the second chamber. When the rotating shaft rotates along the first direction, the flexible seal is driven to slide and the first chamber is gradually enlarged, while the second chamber is gradually reduced. The piston member presses against and closes the oil passage. The flexible seal is affected by the oil pressure in the second chamber to expand its diameter and abut against the inner wall of the shell. The damping oil in the second chamber is squeezed and produces a damping effect on the rotating shaft.

[0009] Preferably, when the rotating shaft rotates in the opposite direction to the first direction, the flexible sealing member is driven to slide and the first chamber is gradually reduced, while the second chamber is gradually increased. The piston member releases the oil passage blockage, and the damping oil flows between the first chamber and the second chamber through the oil passage.

[0010] Preferably, the piston member passes through the oil passage and slides relative to the flexible sealing member, and the flexible sealing member further comprises a closing surface extending along the circumference of the oil passage, and the piston member moves and presses against or does not press against the closing surface.

[0011] Preferably, the flexible seal also includes a skirt body that gradually expands in diameter in the direction away from the first chamber. When the shaft rotates along the first direction, the piston member presses against the closed surface, and the skirt body expands in diameter under the influence of the oil pressure in the second chamber and presses against the inner wall of the shell.

[0012] Preferably, the flexible seal defines the oil passage around, and a plurality of connecting blocks extend radially inwardly of the oil passage, and the piston member includes a plurality of connecting grooves corresponding to the connecting blocks, and the connecting groove includes an inlet section extending along the axial direction of the piston member, and the connecting groove also includes a accommodating section connected to the inlet section and extending a distance along the circumferential direction of the piston member, and the connecting block extends from the inlet section and rotates into the accommodating section.

[0013] Preferably, it also includes a guide shaft arranged in the shell, the first end of the guide shaft is connected to the shell, the second end abuts the rotating shaft, the piston member is sleeved outside the guide shaft, the rotating shaft rotates relative to the guide shaft and is transmission-connected to the piston member to slide in the axial direction of the guide shaft.

[0014] Preferably, the piston member includes a first guide bevel extending obliquely, and the rotating shaft includes a second guide bevel extending obliquely, and when the rotating shaft rotates along the first direction, the second guide bevel presses against the first guide bevel and drives the piston member close to the first end of the guide shaft.

[0015] Preferably, the piston member includes an inclined extending third guide bevel, and the rotating shaft includes a guide block abutting the third guide bevel, when the rotating shaft rotates along a first direction, the guide block moves from the first end to the second end of the third guide bevel, when the rotating shaft rotates against the first direction, the guide block moves from the second end to the first end of the third guide bevel, the guide block presses against the third guide bevel and drives the piston member away from the first end of the guide shaft.

[0016] Preferably, it also includes an elastic member pressed between the piston member and the first end of the guide shaft. When the shaft rotates along the first direction, the elastic member is compressed to accumulate elastic force, and when the shaft rotates against the first direction, the elastic member releases the elastic force.

[0017] Preferably, it also includes an oil leakage channel passing through the guide shaft and the rotating shaft, the oil leakage channel connecting the first chamber and the second chamber, and the damper also includes an adjusting member arranged on the rotating shaft, the adjusting member is used to adjust the connecting area of ​​the oil leakage channel connecting the first chamber.

[0018] The invention also provides a toilet cover plate using the damper.

[0019] The invention also provides a toilet using the damper.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] 1. Through the mutual linkage between the rotating shaft, the piston and the flexible seal, when the rotating shaft rotates in the first direction, the piston closes the oil passage of the flexible seal, the damping oil in the second chamber is pressurized to produce a damping effect, and the flexible seal is affected by the oil pressure in the second chamber to expand its diameter and press against the inner wall of the housing, thereby slowing down the rotation speed of the rotating shaft;

[0022] 2. When the rotating shaft rotates in the opposite direction to the first direction, the flexible seal is driven to slide and the first chamber is gradually reduced, and the second chamber is gradually increased. The piston member releases the blocking of the oil passage, and the flexible seal is released from abutting against the inner wall of the housing. The damping oil flows between the first chamber and the second chamber from the oil passage and the gap between the flexible seal and the inner wall of the housing. At this time, the rotation of the rotating shaft is not damped.

[0023] 3. When the shaft of the flexible seal rotates along the first direction, the flexible seal is affected by the oil pressure in the second chamber to expand its diameter and abut against the inner wall of the housing. After long-term use, even if the flexible seal and the inner wall of the housing are worn due to friction, the deformation of the flexible seal caused by the expansion of its diameter under the influence of the oil pressure during use can offset the wear. The flexible seal has a function of attenuation self-compensation.

[0024] 4. The flexible seal is connected to the connecting groove on the piston member through the connecting block, and there is no need to disconnect the flexible seal and then stretch the flexible seal to be mounted on the piston member, so the integrity of the flexible seal can be maintained, and the service life of the flexible seal is longer;

[0025] 5. The piston member includes a first guide slope extending obliquely, and the rotating shaft includes a second guide slope extending obliquely. When the rotating shaft rotates in the first direction, the second guide slope presses against the first guide slope and drives the piston member close to the first end of the guide shaft. The transmission is carried out in the direction of the abutment of the inclined surfaces, and the transmission is more stable and reliable.

[0026] 6. The piston member includes a third guide slope extending obliquely, and the rotating shaft includes a guide block abutting the third guide slope. When the rotating shaft rotates along the first direction, the guide block moves from the first end of the third guide slope to the second end. When the rotating shaft rotates against the first direction, the guide block moves from the second end of the third guide slope to the first end. The guide block presses against the third guide slope and drives the piston member away from the first end of the guide shaft. The guide block only needs to abut on the third guide slope, and there is no need to provide a track on the piston member that matches the size of the guide block to achieve transmission, and the precision required is small;

[0027] 7. The damper also includes an elastic member that presses between the piston member and the first end of the guide shaft. When the rotating shaft rotates along the first direction, the elastic member is compressed and accumulates elastic force. The elastic force accumulated by the elastic member can be converted into a damping effect on the rotating shaft. The damper can output greater damping. When the rotating shaft rotates against the first direction, the elastic member releases the elastic force. At this time, the piston member is under the action of the elastic member 7. When the pressing surface is not pressed against the closed surface, the elastic member keeps the pressing surface and the closed surface separated, and the damping oil flows more rapidly between the first chamber and the second chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional exploded schematic diagram of a damper in a preferred embodiment of the present invention;

[0029] Figure 2 It is a cross-sectional schematic diagram of the damper when the rotating shaft rotates along the first direction in a preferred embodiment of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of the damper when the rotating shaft rotates against the first direction in a preferred embodiment of the present invention;

[0031] Figure 4 A cross-sectional schematic diagram of a damper in a preferred embodiment of the present invention, showing an adjustment member and an oil drain channel;

[0032] Figure 5 It is a three-dimensional exploded schematic diagram of the connection between the rotating shaft and the piston member in the preferred embodiment of the present invention;

[0033] Figure 6 is a three-dimensional schematic diagram of a piston member in a preferred embodiment of the present invention, showing a connecting groove and a pressing surface;

[0034] Figure 7 It is a three-dimensional schematic diagram of a flexible sealing member in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Certain directional terms used to describe the drawings below, such as "inside", "outside", "above", "below" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0037] The terms "first", "first", "second", "second" and the like used in the present invention do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0038] See also Figure 1-Figure 7 A damper 100 comprises a shell 1, wherein the shell 1 defines an installation space around and in a cylindrical shape. The damper 100 further comprises a rotating shaft 3 rotatably arranged on the shell 1, wherein the rotating shaft 3 is attached at the entrance of the installation space. Specifically, the rotating shaft 3 comprises an inner transmission part 31 extending into the installation space and an outer transmission part 32 extending out of the installation space, wherein the outer transmission part 32 is used for connecting to an external power source. In the present embodiment, the damper 100 is suitable for being connected to a toilet, wherein the toilet comprises a toilet seat and a toilet cover plate with a rotating cover arranged on the toilet seat. The damper 100 is arranged at the pivot of the toilet seat and the toilet cover plate, and when the toilet cover plate rotates, the rotating shaft 3 is also driven to rotate.

[0039] The damper 100 also includes a piston member 4 slidably arranged in the housing 1, the piston member 4 is transmission-connected to the rotating shaft 3, the rotating shaft 3 rotates and drives the piston member 4 to slide, specifically, the piston member 4 slides along the axial direction of the installation space, the piston member 4 is transmission-connected to the inner transmission part 31 of the rotating shaft 3, the damper 100 includes a guide shaft 5 arranged in the housing 1, the first end 51 of the guide shaft 5 is connected to the housing 1, and the second end 52 abuts against the rotating shaft 3, the rotating shaft 3 rotates relative to the guide shaft 5 and is transmission-connected to the piston member 4 in the axial direction of the guide shaft 5 Sliding, the first end 51 of the guide shaft 5 is provided with a rotation limiting positioning member 55, and the bottom wall of the installation space is provided with an embedding groove 21 for the rotation limiting positioning member 55 to be embedded in and limit the rotation of the guide shaft 5, and the guide shaft 5 is provided with a first rotation limiting plane 53 extending along the axial direction, and the piston member 4 includes a penetrating connecting hole 41 and is sleeved outside the guide shaft 5, and the inner wall of the connecting hole 41 is provided with a second rotation limiting plane 411, and the first rotation limiting plane 53 abuts against the second rotation limiting plane 411 and limits the piston member 4 to only slide along the axial direction of the guide shaft 5, but not to rotate along the circumferential direction of the guide shaft 5.

[0040] The damper 100 also includes a flexible seal 6, which can be made of POM, PBT or nylon. The flexible seal 6 is sleeved outside the piston member 4 and can move axially along the piston member 4. The flexible seal 6 separates the housing 1 and defines a first chamber 11 and a second chamber 12. The flexible seal 6 also includes an oil passage 61 connecting the first chamber 11 and the second chamber 12. When the rotating shaft 3 rotates along a first direction, the flexible seal 6 is driven to slide and the first chamber 11 is gradually enlarged and the second chamber 12 is gradually reduced. The piston member 4 presses against and closes the oil passage 61. The flexible seal 6 is affected by the oil pressure in the second chamber 12 and its diameter is expanded to abut against the inner wall of the housing 1. In this embodiment, the first direction can be clockwise or counterclockwise. It should be noted that the diameter expansion of the flexible seal 6 is a phenomenon of radial dimensional expansion caused by elastic deformation under the influence of oil pressure.

[0041] During the process of the second chamber 12 gradually decreasing, the damping oil in the second chamber 12 is squeezed, and because the oil passage 61 is closed, the flow rate of the damping oil from the second chamber 12 to the first chamber 11 is slow. At this time, the oil pressure in the second chamber 12 gradually increases, and the diameter of the flexible seal 6 is expanded to connect the inner wall of the housing 1, and the gap between the flexible seal 6 and the inner wall of the housing 1 is also closed. When the shaft 3 is subjected to a constant torque, as the damping oil in the second chamber 12 is squeezed, the rotation speed of the shaft 3 is affected and a damping effect is generated.

[0042] When the rotating shaft 3 rotates in the opposite direction to the first direction, the flexible seal 6 is driven to slide and the first chamber 11 is gradually reduced, while the second chamber 12 is gradually increased. The piston member 4 releases the oil passage 61, and the damping oil flows between the first chamber 11 and the second chamber 12 through the oil passage 61. The flexible seal 6 and the inner wall of the housing 1 are released from abutment, and the damping oil can also flow through the gap. At this time, the rotation is a damping-free process.

[0043] The piston member 4 passes through the oil passage 61 and slides relative to the flexible seal 6. The flexible seal 6 also includes a closed surface 62 extending circumferentially along the oil passage 61. The piston member 4 moves and presses against or does not press against the closed surface 62. The flexible seal 6 also includes a skirt body 63 that gradually expands in diameter away from the first chamber 11. When the rotating shaft 3 rotates along the first direction, the piston member 4 presses against the closed surface 62. The skirt body 63 is pressed against the inner wall of the housing 1 under the influence of the oil pressure in the second chamber 12. Specifically, under the influence of the oil pressure of the damping oil filled in the interval space between the skirt body 63 and the piston member 4, the skirt body 63 is pressed against the inner wall of the housing 1.

[0044] The flexible seal 6 is annular, and the inner edge of the flexible seal 6 defines the oil passage 61. The inner edge of the flexible seal 6 also includes a plurality of connection blocks 64 extending radially inward. In this embodiment, two connection blocks are provided, and the connection blocks 64 are symmetrically arranged along the center of the flexible seal 6. The piston member 4 includes a connection groove 42 for corresponding connection of the flexible seal 6, and the connection block 64 is embedded in the connection groove 42. The connection groove 42 includes an inlet section 422 extending along the axial direction of the piston member 4, and the connection groove 42 also includes a receiving section 423 connected to the inlet section 422 and extending a distance along the circumferential direction of the piston member 4. The connection block 64 extends from the inlet section 422 and rotates into the receiving section 423.

[0045] The width of the accommodating section 423 is greater than the thickness of the connecting block 64, so the flexible seal 6 can move axially along the piston member 4 in the connecting groove 42. The connecting groove 42 extends on one side close to the rotating shaft 3 to define a pressing surface 421, which presses against the closing surface 62 and closes the oil passage 61.

[0046] The piston member 4 includes a first guide bevel 43 that extends obliquely, and the inner transmission part 31 of the rotating shaft 3 includes a second guide bevel 33 that extends obliquely. When the rotating shaft 3 rotates along the first direction, the second guide bevel 33 presses against the first guide bevel 43 and drives the piston member 4 to approach the first end 51 of the guide shaft 5. In this embodiment, the first guide bevel 43 extends obliquely in a direction away from the connecting groove 42. The piston member 4 is provided with two first guide bevels 43, and the two first guide bevels 43 are symmetrically arranged around the axis center of the piston member 4. The rotating shaft 3 is also provided with two second guide bevels 33, and the two second guide bevels 33 are symmetrically arranged around the axis center of the rotating shaft 3. When the rotating shaft 3 rotates along the first direction, the second guide bevel 33 rotates and presses against the first guide bevel 43. The first guide bevel 43 and the second guide bevel 33 are staggered and drive the piston member 4 to approach the first end 51 of the guide shaft 5.

[0047] The piston member 4 includes a third guide slope 44 extending obliquely, and the rotating shaft 3 includes a guide block 34 abutting against the third guide slope 44. When the rotating shaft 3 rotates along the first direction, the guide block 34 moves from the first end 441 of the third guide slope 44 to the second end 442. When the rotating shaft 3 rotates against the first direction, the guide block 34 moves from the second end 442 of the third guide slope 44 to the first end 441. The guide block 34 presses against the third guide slope 44 and drives the piston member 4 away from the first end 51 of the guide shaft 5. The piston member 4 is provided with two third guide slopes 44, and the two third guide slopes 44 are symmetrically arranged around the axis center of the piston member 4. The rotating shaft 3 is also provided with two guide blocks 34, and the two guide blocks 34 are also symmetrically arranged around the axis center of the rotating shaft 3. The third guiding slope 44 is disposed between the connecting groove 42 and the first guiding slope 43 . The third guiding slope 44 and the first guiding slope 43 extend in the same direction and the distance between the third guiding slope 44 and the first guiding slope 43 is always the same.

[0048] The damper 100 also includes an elastic member 7 pressed between the piston member 4 and the first end 51 of the guide shaft 5. When the rotating shaft 3 rotates along the first direction, the elastic member 7 is compressed to accumulate elastic force. The elastic force accumulated by the elastic member 7 can be converted into a damping effect on the rotating shaft 3. The damper 100 can output greater damping. When the rotating shaft 3 rotates against the first direction, the elastic member 7 releases the elastic force. At this time, the piston member 4 is under the action of the elastic member 7. When the pressing surface 421 is not pressed against the closed surface 62, the elastic member 7 keeps the pressing surface 421 and the closed surface 62 apart, and the damping oil flows more rapidly between the first chamber 11 and the second chamber 12.

[0049] The damper 100 also includes an oil leakage channel 8 passing through the guide shaft 5 and the rotating shaft 3, and the oil leakage channel 8 connects the first chamber 11 and the second chamber 12. The damper 100 also includes an adjusting member 9 arranged on the rotating shaft 3, and the adjusting member 9 is used to adjust the connection area of ​​the oil leakage channel 8 connecting the first chamber 11. Specifically, the guide shaft 5 is a through tubular structure, the guide shaft 5 extends with a first oil leakage passage 54, the rotating shaft 3 extends with a second oil leakage passage 35, the first oil leakage passage 54 and the second oil leakage passage 35 are butted with the second end of the guide shaft 5, the first oil leakage passage 54 and the second oil leakage passage 35 extend to define the oil leakage passage 8, the inlet of the first oil leakage passage 54 is connected to the second chamber 12, the outlet of the second oil leakage passage 35 is connected to the first chamber 11, the first oil leakage passage 54 includes two oil leakage branch pipes 351 extending along the radial direction of the rotating shaft 3, the adjusting member 9 is a bolt screwed on the rotating shaft 3, the bolt is rotated and extends into the connection between the two oil leakage branch pipes 351, at this time, the connection area between the oil leakage branch pipe 351 and the first chamber 11 is reduced, in this embodiment, the oil leakage passage 8 can be fully opened or fully closed, and the damping size of the damper 100 can be set according to the oil leakage passage 8.

[0050] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A damper, It is characterized in that include: A housing adapted to be filled with damping oil; A rotating shaft, rotatably disposed on the housing; A piston member is slidably disposed in the housing, the piston member is drivingly connected to the rotating shaft, and the rotating shaft rotates and drives the piston member to slide; A flexible seal is sleeved outside the piston and can move along the axial direction of the piston. The flexible seal separates the shell and defines a first chamber and a second chamber. The flexible seal also includes an oil passage connecting the first chamber and the second chamber. When the rotating shaft rotates along the first direction, the flexible seal is driven to slide and the first chamber is gradually enlarged and the second chamber is gradually reduced. The piston presses against and closes the oil passage. The flexible seal is affected by the oil pressure in the second chamber to expand its diameter and abut against the inner wall of the shell. The damping oil in the second chamber is squeezed and produces a damping effect on the rotating shaft. The flexible seal defines the oil passage around, and a plurality of connecting blocks extend radially inwardly of the oil passage. The piston member includes a plurality of connecting grooves correspondingly connected to the connecting blocks. The connecting groove includes an inlet section extending axially along the piston member, and the connecting groove also includes an accommodating section connected to the inlet section and extending a distance circumferentially along the piston member. The connecting block extends from the inlet section and rotates into the accommodating section.

2. The damper according to claim 1, Features: When the rotating shaft rotates in the opposite direction to the first direction, the flexible sealing member is driven to slide and the first chamber is gradually reduced, while the second chamber is gradually increased. The piston member releases the oil passage, and the damping oil flows between the first chamber and the second chamber through the oil passage.

3. The damper according to claim 2, Features: The piston member passes through the oil passage and slides relative to the flexible sealing member. The flexible sealing member also includes a closing surface extending along the circumference of the oil passage. The piston member moves and presses against or does not press against the closing surface.

4. The damper according to claim 3, Features: The flexible seal also includes a skirt body that gradually expands in diameter away from the first chamber. When the shaft rotates in the first direction, the piston member presses against the closed surface, and the skirt body expands in diameter under the influence of the oil pressure in the second chamber and presses against the inner wall of the shell.

5. The damper according to any one of claims 2 to 4, Its characteristics are: It also includes a guide shaft arranged in the shell, a first end of the guide shaft is connected to the shell, and a second end abuts the rotating shaft. The piston member is sleeved outside the guide shaft, and the rotating shaft rotates relative to the guide shaft and is transmission-connected to the piston member to slide in the axial direction of the guide shaft.

6. The damper according to claim 5, Features: The piston member includes a first guide slope extending obliquely, and the rotating shaft includes a second guide slope extending obliquely. When the rotating shaft rotates along a first direction, the second guide slope presses against the first guide slope and drives the piston member to approach the first end of the guide shaft.

7. The damper according to claim 6, Features: The piston member includes an inclined third guide slope, and the rotating shaft includes a guide block abutting the third guide slope. When the rotating shaft rotates along a first direction, the guide block moves from a first end to a second end of the third guide slope. When the rotating shaft rotates against the first direction, the guide block moves from the second end to the first end of the third guide slope. The guide block presses against the third guide slope and drives the piston member away from the first end of the guide shaft.

8. The damper according to claim 7, Features: It also includes an elastic member pressed between the piston member and the first end of the guide shaft. When the shaft rotates along the first direction, the elastic member is compressed to accumulate elastic force. When the shaft rotates against the first direction, the elastic member releases the elastic force.

9. The damper according to claim 5, Features: It also includes an oil leakage channel passing through the guide shaft and the rotating shaft, the oil leakage channel connects the first chamber and the second chamber, and the damper also includes an adjustment member arranged on the rotating shaft, the adjustment member is used to adjust the connection area of ​​the oil leakage channel connecting the first chamber.

10. A toilet seat cover, Features: A damper as claimed in any one of claims 1 to 9 is used.

11. A toilet, Features: A damper as claimed in any one of claims 1 to 9 is used.

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