A positive and negative bidirectional damping mechanism and toilet cover having the same

Abstract

The present invention discloses a forward and reverse bidirectional damping mechanism and a toilet cover having the same, comprising a shell, a rotating shaft, and at least one baffle fixedly arranged between the shell and the rotating shaft for disturbing damping oil, wherein the baffle divides the oil chamber into at least a first oil chamber and a second oil chamber, and further comprises a connecting channel connecting the first oil chamber and the second oil chamber, when the rotating shaft rotates clockwise, the baffle shifts the damping oil in the first oil chamber so that the damping oil in the first oil chamber flows from the connecting channel to the second oil chamber, so that the oil pressure in the first oil chamber is higher than the oil pressure in the second oil chamber, when the rotating shaft rotates counterclockwise, the baffle shifts the damping oil in the second oil chamber so that the damping oil in the second oil chamber flows from the connecting channel to the first oil chamber, so that the oil pressure in the second oil chamber is higher than the oil pressure in the first oil chamber, thereby achieving forward and reverse damping effects, not only can mis-assembly and incorrect assembly during the damper assembly process be avoided, and compatibility is better, but it is also easier to promote product standardization, reduce the variety of parts, and reduce costs.

Description

Technical Field

[0001] The invention relates to the technical field of bathrooms, and in particular to a forward and reverse bidirectional damping mechanism and a toilet cover having the damping mechanism. Background Art

[0002] With the improvement of people's living standards, damping mechanisms are widely used in daily life because they can buffer, resist impact and have low noise, such as on toilet covers and door leaves. Most damping mechanisms on the market currently realize the damping function through hydraulic pressure, that is, high-pressure oil chambers and low-pressure oil chambers are formed in the damper during the opening process, and the damping oil slowly penetrates from the high-pressure oil chamber to the low-pressure oil chamber, thereby achieving the purpose of slow falling and silent.

[0003] Traditional dampers usually include a shell that can be filled with damping oil and a rotating shaft that is sealed and rotated with the shell. The rotating shaft is provided with at least one oil baffle that is in contact with the inner wall of the shell and can bend to move the damping oil. The inner wall of the shell is provided with at least one boss that can limit the rotation range of the oil baffle. The boss is hinged with a paddle that can be moved by the damping oil or by the damping oil and the shaft surface. The paddle is provided with a mating surface that is in contact with the shaft surface, and an oil passage that changes the resistance of the damping oil by the swinging of the paddle is provided between the mating surface and the shaft surface. When the shaft rotates in one direction, the paddle closes the damping oil channel, forming a slow-drop effect of the cover. When the shaft rotates in another direction, the paddle does not close the damping oil channel, forming a fast-drop effect of the cover.

[0004] The above-mentioned damper is also called a one-way damper. It achieves the functions of silent when closed and light when opened through the difference in oil clearance between opening and closing. The technology is mature, stable and reliable. With the technological innovation of the product, it is regarded as a standardized product and is increasingly used in various industries.

[0005] However, since the one-way damper adopts a one-way hydraulic structure, that is, it can achieve the functions of forward slow descent and reverse oil flow. On the one hand, due to the slight difference in the forward and reverse installation directions of the damper, it is easy to cause mis-installation and error installation in the production process; on the other hand, at least two dampers are usually installed on the toilet cover or door leaf. When the two dampers are installed symmetrically, different molds need to be developed due to different directions. Not only is the cost high, but also the variety of parts is increased, which is easy to confuse in the selection of actual products, affecting its compatibility. Summary of the invention

[0006] In order to solve the above-mentioned problem, the present invention provides a forward and reverse bidirectional damping mechanism, in which an oil passage is arranged on a rotating shaft, and when the rotating shaft rotates in the forward direction, one of the two outlets of the oil passage is opened and closed by a shift block, and when the rotating shaft rotates in the reverse direction, the other of the two outlets of the oil passage is opened and closed by a shift block, thereby achieving forward and reverse damping effects, which can not only avoid mis-installation and incorrect installation during the damper assembly process, but also improve compatibility, and make it easier to promote product standardization, reduce the variety of parts, and reduce costs.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A forward and reverse bidirectional damping mechanism comprises a housing (10) provided with an oil chamber (11), a rotating shaft (20) sealed and rotatably matched with the oil chamber (11) of the housing (10), and at least one baffle (22) fixedly arranged between the housing (10) and the rotating shaft (20) for disturbing damping oil, wherein the baffle (22) divides the oil chamber (11) into at least a first oil chamber and a second oil chamber, and further comprises a connecting channel connecting the first oil chamber and the second oil chamber, wherein when the rotating shaft (20) rotates clockwise, the baffle (22) moves the damping oil in the first oil chamber so that the damping oil in the first oil chamber flows from the connecting channel to the second oil chamber, so that the oil pressure in the first oil chamber is higher than the oil pressure in the second oil chamber, and when the rotating shaft (20) rotates counterclockwise, the baffle (22) moves the damping oil in the second oil chamber so that the damping oil in the second oil chamber flows from the connecting channel to the first oil chamber, so that the oil pressure in the second oil chamber is higher than the oil pressure in the first oil chamber.

[0009] Preferably, the invention further comprises at least one shift block movably mounted between the housing (10) and the rotating shaft (20); when the rotating shaft (20) rotates clockwise from a starting position, the shift block moves under the action of oil pressure to reduce the flow cross-section at one end of the connecting channel, thereby causing the oil pressure in the first oil chamber to be higher than the oil pressure in the second oil chamber; when the rotating shaft (20) rotates counterclockwise from the starting position, the shift block moves under the action of oil pressure to reduce the flow cross-section at the other end of the connecting channel, thereby causing the oil pressure in the second oil chamber to be higher than the oil pressure in the first oil chamber.

[0010] Preferably, it also includes a first oil passage (21) arranged on the rotating shaft (20), and the first open end and the second open end of the first oil passage (21) are connected to the first oil chamber and the second oil chamber respectively; when the rotating shaft (20) rotates clockwise from the starting position, after the first open end of the first oil passage (21) passes over the shift block, the shift block cuts off the connection between the first open end of the first oil passage (21) and the first oil chamber; when the rotating shaft (20) rotates counterclockwise from the starting position, after the second open end of the first oil passage (21) passes over the shift block, the shift block cuts off the connection between the second open end of the first oil passage (21) and the second oil chamber.

[0011] Preferably, the first oil passage (21) and the baffle (22) are symmetrically arranged on both sides of the axis of the rotating shaft (20), the first oil passage (21) is a chordal through groove, the baffle (22) extends radially, and the first oil passage (21) is perpendicular to the baffle (22).

[0012] Preferably, the shift block comprises a first shift block and a second shift block; when the rotating shaft (20) rotates clockwise from the starting position, the first shift block cooperates with the rotating shaft or the shell to reduce the flow cross-section of one end of the connecting channel; when the rotating shaft (20) rotates counterclockwise from the starting position, the second shift block cooperates with the rotating shaft or the shell to reduce the flow cross-section of the other end of the connecting channel.

[0013] Preferably, the shift block is a swing-type shift block (30a), the inner wall of the shell (10) is provided with a shift block mounting seat (12a), one end of the shift block is swingably mounted on the shift block mounting seat (12a), and the other end is clearance-matched with the outer peripheral surface of the rotating shaft (20) to form the connecting channel.

[0014] Preferably, the shift block mounting seat (12a) comprises two symmetrically arranged shift grooves (121), and the first shift block and the second shift block are swingably mounted on the shift grooves (121); a first step (122) is provided between the two shift grooves (121), and second steps (123) are respectively provided on both sides of the two shift grooves (121), and the height of the second step (123) is smaller than the height of the first step (122).

[0015] Preferably, the shift block includes one, and the shift block includes a first end and a second end; when the rotating shaft (20) rotates clockwise from the starting position, the first end of the shift block cooperates with the rotating shaft or the shell to reduce the flow cross-section of one end of the connecting channel; when the rotating shaft (20) rotates counterclockwise from the starting position, the second end of the shift block cooperates with the rotating shaft or the shell to reduce the flow cross-section of the other end of the connecting channel.

[0016] Preferably, the shift block is a sliding shift block (30b), the inner wall of the shell (10) is provided with a limiting rib (12b), one side of the shift block is a C-shaped surface, the first end and the second end of the C-shaped surface are respectively abutted with the two ends of the limiting rib (12b); the other side of the shift block is an arcuate surface, the arcuate surface is slidably matched with the outer peripheral surface of the rotating shaft (20), the gap between the shift block and the limiting rib (12b) forms the connecting channel, and when the first end or the second end of the C-shaped surface is abutted with one end of the limiting rib (12b), the flow cross section of one end of the connecting channel is reduced.

[0017] In addition, the present invention also provides a toilet cover, comprising a forward and reverse bidirectional damping mechanism as described in any one of the above items.

[0018] The beneficial effects of the present invention are:

[0019] (1) When the rotating shaft of the present invention rotates clockwise, the baffle moves the damping oil in the first oil chamber so that the damping oil in the first oil chamber flows from the connecting channel to the second oil chamber, so that the oil pressure in the first oil chamber is higher than the oil pressure in the second oil chamber. When the rotating shaft rotates counterclockwise, the baffle moves the damping oil in the second oil chamber so that the damping oil in the second oil chamber flows from the connecting channel to the first oil chamber, so that the oil pressure in the second oil chamber is higher than the oil pressure in the first oil chamber, thereby achieving positive and negative damping effects, which can not only avoid mis-assembly and wrong assembly during the damper assembly process, but also improve compatibility, and it is easier to promote product standardization, reduce the variety of parts, and reduce costs;

[0020] (2) The present invention includes a first oil passage provided on the rotating shaft. The oil passage speed is controlled by dual passages, so that the front section can be oiled quickly and the rear section can be oiled slowly during the clockwise or counterclockwise rotation of the rotating shaft, thereby improving the working efficiency while ensuring the damping effect;

[0021] (3) The present invention controls the first oil passage through two shifting blocks. When rotating in the forward direction (clockwise), the forward shifting block acts on the oil passage, and the reverse shifting block gives way; when rotating in the reverse direction (counterclockwise), the reverse shifting block acts on the oil passage, and the forward shifting block gives way, thereby achieving a damping effect in both forward and reverse rotations, without worrying about reverse installation, and more convenient assembly;

[0022] (4) The present invention controls the first oil passage through a shift block. When the shift block rotates forward (clockwise), the first end of the shift block acts on the oil passage and the second end gives way; when the shift block rotates reversely (counterclockwise), the second end of the shift block acts on the oil passage and the first end gives way, thereby achieving a damping effect in both forward and reverse rotations. There is no need to worry about reverse installation, and assembly is more convenient; and the structure is simpler and more compact.

[0023] (5) The oil passage on the rotating shaft of the present invention adopts a chordal through groove. On the one hand, the oil passage efficiency is higher; on the other hand, the position of the oil passage is close to the installation position of the shift block, which is convenient for cooperation with the shift block to avoid excessive stroke of the shift block and unstable control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention;

[0026] Figure 2 It is a cross-sectional structural schematic diagram of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention;

[0027] Figure 3 It is an exploded schematic diagram of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a housing of a forward and reverse bidirectional damping mechanism according to a first embodiment of the present invention;

[0029] Figure 5 It is a schematic diagram of the assembly structure of the housing and the shifting block of the forward and reverse bidirectional damping mechanism according to the first embodiment of the present invention;

[0030] Figure 6 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft rotates clockwise and the toilet cover is opened at an angle of 110° in the working state);

[0031] Figure 7 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft rotates clockwise and the toilet cover is opened at an angle of 110° when the working state);

[0032] Figure 8It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate clockwise and the toilet cover is opened at an angle of 70°);

[0033] Fig. 9 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shift block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate clockwise and the toilet cover is opened at an angle of 70° in the working state);

[0034] Fig.10 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate clockwise, and the toilet cover is opened at an angle of 0°, i.e., in the closed state);

[0035] Fig.11 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate clockwise, and the toilet cover is opened at an angle of 0°, i.e., in a closed state);

[0036] Fig.12 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft rotates counterclockwise and the toilet cover is opened at an angle of 110° in the working state);

[0037] Fig.13 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft rotates counterclockwise and the toilet cover is opened at an angle of 110° when the working state);

[0038] Fig.14 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate counterclockwise and the toilet cover is opened at an angle of 70°);

[0039] Fig.15 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate counterclockwise and the toilet cover is opened at an angle of 70°);

[0040] Fig.16 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate counterclockwise, and the toilet cover is opened at an angle of 0°, i.e., in a closed state);

[0041] Fig.17It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the first embodiment of the present invention (the rotating shaft continues to rotate counterclockwise and the toilet cover is opened at an angle of 0°, i.e., in a closed state);

[0042] Fig.18 It is a structural schematic diagram of a housing of a forward and reverse bidirectional damping mechanism according to a second embodiment of the present invention;

[0043] Fig.19 It is a schematic diagram of the assembly structure of the housing and the shifting block of the forward and reverse bidirectional damping mechanism according to the second embodiment of the present invention;

[0044] Fig. 20 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft rotates clockwise and the toilet cover is opened at an angle of 110° when the working state);

[0045] Fig.21 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shift block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft rotates clockwise and the toilet cover is opened at an angle of 110° when the working state);

[0046] Fig. 22 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate clockwise and the toilet cover is opened at an angle of 70°);

[0047] Fig.23 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate clockwise and the toilet cover is opened at an angle of 70°);

[0048] Fig.24 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate clockwise, and the toilet cover is opened at an angle of 0°, i.e., in the closed state);

[0049] Fig.25 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate clockwise and the toilet cover is opened at an angle of 0°, i.e., in a closed state);

[0050] Fig.26 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft rotates counterclockwise and the toilet cover is opened at an angle of 110° when the working state);

[0051] Fig. 27It is an internal cross-sectional view of the relative positions of the rotating shaft and the shift block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft rotates counterclockwise and the toilet cover is opened at an angle of 110° when the working state);

[0052] Fig.28 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate counterclockwise and the toilet cover is opened at an angle of 70°);

[0053] Fig.29 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate counterclockwise and the toilet cover is opened at an angle of 70°);

[0054] Fig.30 It is an end view schematic diagram of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate counterclockwise, and the toilet cover is opened at an angle of 0°, i.e., in the closed state);

[0055] Fig.31 It is an internal cross-sectional view of the relative positions of the rotating shaft and the shifting block of the forward and reverse bidirectional damping mechanism of the second embodiment of the present invention (the rotating shaft continues to rotate counterclockwise, and the toilet cover is opened at an angle of 0°, i.e., in a closed state);

[0056] In the figure:

[0057] 10-housing; 11-oil chamber; 12a-shift block mounting seat; 121-shift groove; 122-first step; 123-second step; 12b-limiting rib;

[0058] 20-rotating shaft; 21-first oil passage; 22-baffle; 23-flange;

[0059] Dial block (30a-swinging type dial block; 30b-sliding type dial block;)

[0060] Connecting channel (31a-connecting channel arranged between the shifting block and the rotating shaft; 31b-connecting channel arranged between the shifting block and the housing;)

[0061] 40-pressure cover; 41-sealing ring; 42-gasket. DETAILED DESCRIPTION

[0062] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0063] First embodiment (controlling the oil passage of the rotating shaft by two shift blocks)

[0064] like Figures 1 to 17 As shown, a forward and reverse bidirectional damping mechanism of this embodiment comprises a housing 10 provided with an oil chamber 11, a rotating shaft 20 sealed and rotatably matched with the oil chamber 11 of the housing 10, and at least one baffle 22 fixedly arranged between the housing (10) and the rotating shaft (20) for disturbing damping oil, wherein the baffle 22 divides the oil chamber 11 into at least a first oil chamber and a second oil chamber, and further comprises a connecting channel 31a connecting the first oil chamber and the second oil chamber, when the rotating shaft 20 rotates clockwise, the baffle 22 shifts the damping oil in the first oil chamber so that the damping oil in the first oil chamber flows from the connecting channel 31a to the second oil chamber, so that the oil pressure in the first oil chamber is higher than the oil pressure in the second oil chamber, and when the rotating shaft 20 rotates counterclockwise, the baffle 22 shifts the damping oil in the second oil chamber so that the damping oil in the second oil chamber flows from the connecting channel 31a to the first oil chamber, so that the oil pressure in the second oil chamber is higher than the oil pressure in the first oil chamber.

[0065] In this embodiment, it also includes at least one shift block movably mounted between the housing 10 and the rotating shaft 20. When the rotating shaft 20 rotates clockwise from a starting position, the shift block moves under the action of oil pressure to reduce the flow cross-section of one end of the connecting channel 31a, thereby making the oil pressure in the first oil chamber higher than the oil pressure in the second oil chamber; when the rotating shaft 20 rotates counterclockwise from the starting position, the shift block moves under the action of oil pressure to reduce the flow cross-section of the other end of the connecting channel 31a, thereby making the oil pressure in the second oil chamber higher than the oil pressure in the first oil chamber.

[0066] In this embodiment, it also includes a first oil passage 21 arranged on the rotating shaft 20, and the first open end and the second open end of the first oil passage 21 are connected to the first oil chamber and the second oil chamber respectively; when the rotating shaft 20 rotates clockwise from the starting position, the first open end of the first oil passage 21 passes over the shift block, and the shift block cuts off the connection between the first open end of the first oil passage 21 and the first oil chamber; when the rotating shaft 20 rotates counterclockwise from the starting position, the second open end of the first oil passage 21 passes over the shift block, and the shift block cuts off the connection between the second open end of the first oil passage 21 and the second oil chamber.

[0067] like Figure 7 As shown, the first oil passage 21 and the baffle 22 are symmetrically arranged on both sides of the axis of the rotating shaft 20, the first oil passage 21 is a chord-wise through groove, the baffle 22 extends radially, and the first oil passage 21 is perpendicular to the baffle 22. Preferably, the size of the first opening end and the second opening end of the first oil passage 21 is larger than the size of the middle channel of the first oil passage 21.

[0068] like Figures 1 to 3 As shown, in this embodiment, the rotating shaft 20 includes an inner shaft located in the oil chamber 11 of the housing 10 and an outer shaft extending out of the housing 10, and a flange 23 is provided between the inner shaft and the outer shaft; in addition to the flange 23 of the rotating shaft 20, a pressure cover 40 is provided on the side close to the outer shaft of the rotating shaft, and the pressure cover 40 is sealed and connected to the end of the housing 10 through a sealing ring 41 and a gasket 42, and the rotating shaft 20 is sealed and connected to the housing 10 through the pressure cover 40.

[0069] like Figure 3 As shown, in this embodiment, the shift block includes a first shift block and a second shift block; when the rotating shaft 20 rotates clockwise from the starting position, the first shift block cooperates with the rotating shaft 20 to reduce the flow cross-section of one end of the connecting channel 31a; when the rotating shaft 20 rotates counterclockwise from the starting position, the second shift block cooperates with the rotating shaft 20 to reduce the flow cross-section of the other end of the connecting channel 31a.

[0070] like Figure 4 and Figure 5 As shown, in this embodiment, the shift block adopts a swing type shift block 30a, and the inner wall of the housing 10 is provided with a shift block mounting seat 12a, one end of the shift block is swingably mounted on the shift block mounting seat 12a, and the other end is loosely matched with the outer peripheral surface of the rotating shaft 20 to form a connecting channel 31a. Correspondingly, the shift block mounting seat 12a includes two symmetrically arranged shift grooves 121, and the first shift block and the second shift block are swingably mounted on the shift grooves 121; a first step 122 is provided between the two shift grooves 121, and second steps 123 are respectively provided on both sides of the two shift grooves 121, and the height of the second step 123 is less than the height of the first step 122.

[0071] The working process of the damping mechanism of this embodiment in closing the toilet cover (the shaft rotates clockwise) is briefly described as follows:

[0072] like Figure 6 and Figure 7 As shown, when the toilet cover is in a fully opened state, for example, the opening angle is 110°, at this time, during the clockwise rotation of the shaft 20, the right shift block in the figure is the first shift block, and the left shift block is the second shift block, the first shift block is in abutment with the circumference of the shaft 20, and the second shift block is in a yielding position with the circumference of the shaft 20;

[0073] When the toilet cover is closed, in the initial stage of the clockwise rotation of the shaft 20, the second shift block gives way to the first open end of the first oil passage 21, and the first shift block does not close the second open end of the first oil passage 21. At this time, the first oil passage 21 is in an open state; at the same time, the baffle 22 on the shaft 20 disturbs the damping oil in the oil chamber 11, and drives the first shift block to swing through the damping oil flow pressure. At the same time, the circumferential transmission of the shaft 20 causes the first shift block to swing rapidly, and the connecting channel 31a between the shaft 20 and the shift block is opened. At this time, it is in the rapid oil passage stage;

[0074] like Figure 8 and Fig. 9 As shown, when the rotating shaft 20 continues to rotate clockwise, the first shift block switches the connection between the second open end of the first oil passage 21 and the second oil chamber, so that the first oil passage 21 is closed or partially closed; at this time, the damping oil only seeps slowly through part of the gap of the first oil passage 21 and the connecting channel 31a, thereby achieving a damping effect.

[0075] like Fig.10 and Fig.11 As shown, when the rotating shaft 20 continues to rotate clockwise, the first open end and the second open end of the first oil passage 21 are both located in the same oil chamber (low-pressure oil chamber), and the oil flow of the first oil passage no longer affects the flow pressure of the damping oil in the oil chamber; at this time, the damping oil only seeps slowly through the connecting channel 31a, thereby playing a damping effect until the toilet cover is completely closed.

[0076] The opening process of the toilet cover (counterclockwise rotation of the rotating shaft) is similar to the above process, except that the left shift block, i.e. the second shift block, is in effect, which will not be described in detail here.

[0077] Second embodiment (controlling the oil passage of the rotating shaft through a shift block)

[0078] like Figures 18 to 31 As shown, the main difference between the forward and reverse bidirectional damping mechanism of this embodiment and the first embodiment is that: in this embodiment, the shift block includes one, and the shift block includes a first end and a second end; when the rotating shaft 20 rotates clockwise from the starting position, the first end of the shift block cooperates with the shell 10 to reduce the flow cross-section of one end of the connecting channel; when the rotating shaft 20 rotates counterclockwise from the starting position, the second end of the shift block cooperates with the shell 10 to reduce the flow cross-section of the other end of the connecting channel 31b.

[0079] Other embodiments may also be adopted, when the rotating shaft 20 rotates clockwise from the starting position, the first end of the shift block cooperates with the rotating shaft 20 to thereby reduce the flow cross-section of one end of the connecting channel 31b; when the rotating shaft 20 rotates counterclockwise from the starting position, the second end of the shift block cooperates with the rotating shaft 20 to thereby reduce the flow cross-section of the other end of the connecting channel 31b.

[0080] like Figure 18 to Figure 19 As shown, the shift block adopts a sliding shift block 30b, and the inner wall of the housing 10 is provided with a limiting rib 12b. One side of the shift block is a C-shaped surface, and the first end and the second end of the C-shaped surface are respectively abutted with the two ends of the limiting rib 12b; the other side of the shift block is an arcuate surface, and the arcuate surface is slidably matched with the outer peripheral surface of the rotating shaft 20. In this embodiment, the side of the limiting rib 12b that cooperates with the shift block adopts an arcuate surface. The gap between the shift block and the limiting rib 12b forms a connecting channel 31b, and when the first end or the second end of the C-shaped surface abuts with one end of the limiting rib 12b, the flow cross section of one end of the connecting channel is reduced.

[0081] The other structures and working processes of this embodiment are similar to those of the first embodiment and will not be described in detail here.

[0082] In addition, the present invention also provides a toilet cover, comprising a forward and reverse bidirectional damping mechanism as described in any one of the above items. Preferably, the toilet cover is provided with two damping mechanisms, which are arranged symmetrically on the left and right. When installing, the damping mechanism can be installed on the left or right side at will, without worrying about mis-installation or improper installation.

[0083] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A forward and reverse bidirectional damping mechanism, comprising a housing (10) provided with an oil chamber (11), a rotating shaft (20) sealingly rotating with the oil chamber (11) of the housing (10), and at least one baffle (22) fixedly arranged between the housing (10) and the rotating shaft (20) for disturbing damping oil, wherein the baffle (22) divides the oil chamber (11) into at least a first oil chamber and a second oil chamber, characterized in that: The invention also includes a connecting passage connecting the first oil chamber and the second oil chamber. When the rotating shaft (20) rotates clockwise, the baffle plate (22) shifts the damping oil in the first oil chamber so that the damping oil in the first oil chamber flows from the connecting passage to the second oil chamber, so that the oil pressure in the first oil chamber is higher than the oil pressure in the second oil chamber. When the rotating shaft (20) rotates counterclockwise, the baffle plate (22) shifts the damping oil in the second oil chamber so that the damping oil in the second oil chamber flows from the connecting passage to the first oil chamber, so that the oil pressure in the second oil chamber is higher than the oil pressure in the first oil chamber. The invention also includes at least one shifting block movably mounted between the housing (10) and the rotating shaft (20). and a first oil passage (21) disposed on the rotating shaft (20); the first opening end and the second opening end of the first oil passage (21) are respectively connected to the first oil chamber and the second oil chamber; when the rotating shaft (20) rotates clockwise from the starting position, after the first opening end of the first oil passage (21) passes over the shifting block, the shifting block cuts off the connection between the first opening end of the first oil passage (21) and the first oil chamber; when the rotating shaft (20) rotates counterclockwise from the starting position, after the second opening end of the first oil passage (21) passes over the shifting block, the shifting block cuts off the connection between the second opening end of the first oil passage (21) and the second oil chamber.

2. A forward and reverse bidirectional damping mechanism according to claim 1, characterized in that: When the rotating shaft (20) rotates clockwise from a starting position, the shift block moves under the action of oil pressure to reduce the flow cross-section of one end of the connecting channel, thereby causing the oil pressure in the first oil chamber to be higher than the oil pressure in the second oil chamber; when the rotating shaft (20) rotates counterclockwise from the starting position, the shift block moves under the action of oil pressure to reduce the flow cross-section of the other end of the connecting channel, thereby causing the oil pressure in the second oil chamber to be higher than the oil pressure in the first oil chamber.

3. A forward and reverse bidirectional damping mechanism according to claim 1, characterized in that: The first oil passage (21) and the baffle (22) are symmetrically arranged on both sides of the axis of the rotating shaft (20); the first oil passage (21) is a chord-wise through groove; the baffle (22) extends radially; and the first oil passage (21) is perpendicular to the baffle (22).

4. A forward and reverse bidirectional damping mechanism according to claim 2, characterized in that: The shift block comprises a first shift block and a second shift block; when the rotating shaft (20) rotates clockwise from the starting position, the first shift block cooperates with the rotating shaft or the housing to reduce the flow cross section of one end of the connecting channel; when the rotating shaft (20) rotates counterclockwise from the starting position, the second shift block cooperates with the rotating shaft or the housing to reduce the flow cross section of the other end of the connecting channel.

5. A forward and reverse bidirectional damping mechanism according to claim 4, characterized in that: The shift block is a swing-type shift block (30a), the inner wall of the housing (10) is provided with a shift block mounting seat (12a), one end of the shift block is swingably mounted on the shift block mounting seat (12a), and the other end is clearance-matched with the outer peripheral surface of the rotating shaft (20) to form the connecting channel.

6. A forward and reverse bidirectional damping mechanism according to claim 5, characterized in that: The shift block mounting seat (12a) comprises two symmetrically arranged shift grooves (121), the first shift block and the second shift block being swingably mounted in the shift grooves (121); a first step (122) is provided between the two shift grooves (121), and second steps (123) are respectively provided on both sides of the two shift grooves (121), and the height of the second step (123) is smaller than the height of the first step (122).

7. A forward and reverse bidirectional damping mechanism according to claim 2, characterized in that: The shift block comprises one, and the shift block comprises a first end and a second end; when the rotating shaft (20) rotates clockwise from the starting position, the first end of the shift block cooperates with the rotating shaft or the housing to reduce the flow cross section of one end of the connecting channel; when the rotating shaft (20) rotates counterclockwise from the starting position, the second end of the shift block cooperates with the rotating shaft or the housing to reduce the flow cross section of the other end of the connecting channel.

8. A forward and reverse bidirectional damping mechanism according to claim 7, characterized in that: The shift block is a sliding type shift block (30b), the inner wall of the shell (10) is provided with a limiting rib (12b), one side of the shift block is a C-shaped surface, the first end and the second end of the C-shaped surface are respectively abutted with the two ends of the limiting rib (12b); the other side of the shift block is an arcuate surface, the arcuate surface is slidably matched with the outer peripheral surface of the rotating shaft (20), the shift block and the limiting rib (12b) are gap-matched to form the connecting channel, and when the first end or the second end of the C-shaped surface is abutted with one end of the limiting rib (12b), the flow cross section of one end of the connecting channel is reduced.

9. A toilet cover, comprising a forward and reverse bidirectional damping mechanism as claimed in any one of claims 1 to 8.

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