WO2011110043A1

WO2011110043A1 - Buffer device

Info

Publication number: WO2011110043A1
Application number: PCT/CN2010/079883
Authority: WO
Inventors: 刘玉志; 王振森
Original assignee: 李飞宇
Priority date: 2010-03-10
Filing date: 2010-12-16
Publication date: 2011-09-15
Also published as: CN201675855U

Abstract

A buffer device is provided, which comprises a shaft sleeve (1), a blade (2) and a shaft (3). A cavity (11) is provided in the shaft sleeve (1) and two primary flanking columns (12,13) are set on the wall of the cavity (11). The shaft (3) is nested movably in the cavity (11) and contacts with the two primary flanking columns (12,13) to divide the cavity (11) into two big chambers. Viscous fluid is filled within a closed space formed by the cavity (11) and the shaft (3). Two secondary flanking columns (331,332) are set on both sides of the wall of the shaft (3), and the two secondary flanking columns (331,332) are held respectively in the two big chambers and contact with the wall of the cavity (11) to divide each big chamber into two small chambers (14,,16,15,17). Two through slots (3311,3321) are provided respectively on the two secondary flanking columns (331,332) and between the bottoms of the two through slots (3311,3321) there is an insert slot (333) penetrating through the shaft (3). The blade (2) is inserted movably in the insert slot (333) with its two ends set with fit parts (22,23) which fit with the corresponding through slots (3311,3321) to make the fluid in the corresponding two small chambers flow in one direction along the through slots (3311,3321). The device can make the cover of the toilet open easily and fall slowly.

Description

Buffer device

Technical field

The present invention relates to a cushioning device, and more particularly to a cushioning device for the toilet lid and the seat cushion to descend.

Background technique

In order to reduce the smell of the bathroom, people often buckle the toilet lid on the seat ring of the toilet body after the convenience. Therefore, when the toilet is used, the opening and closing action of the toilet lid is the most frequent, and the toilet lid and the toilet body are the most frequent. The connection between the two is the key point, which makes the stability and reliability of the joint part have been paid close attention to. However, the toilet cover of the prior art mostly has many obvious defects, such as some toilet bodies and the toilet cover are directly coupled to each other through some simple rotary connecting members, so that people need to use the hand when putting down the toilet cover. Grab the edge of the toilet lid and let go until the toilet lid touches the seat. But in fact, when people put down the toilet lid, they often touch the toilet lid at random, and then make it slap on the seat ring of the toilet body under the action of gravity and inertia, which is easy to damage the toilet lid and the toilet body. On the other hand, it is easy to break the toilet lid or the toilet body. In addition, some toilets with a cushioning force are used to connect the toilet lid to the toilet body of the toilet body. However, most of the toilets that use the hinge buffer have some structural disadvantages, such as complicated processing technology, insufficient cushioning force of the hinge, and no appearance. Look good.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a cushioning device which utilizes the rotation of the rotating shaft to drive the change of the oil pressure in the four small chambers of the rotating sleeve, thereby affecting the rotation speed of the rotating shaft, thereby realizing the toilet lid. The process of easy opening and slow landing, it has certain advantages in terms of service life, structure and assembly.

The technical solution adopted by the present invention to solve the technical problem is: a buffer device comprising a rotating sleeve, a blade and a rotating shaft; a cavity is arranged in the rotating sleeve; the cavity wall of the cavity is along the axis of the rotating sleeve Two first wing posts are arranged in the direction, the rotating shaft is arranged in the cavity, and the shaft wall of the rotating shaft is in contact with the two first wing columns to divide the cavity into two large chambers; a closed fluid space formed by the rotating shaft is filled with a viscous fluid medium, and both sides of the shaft wall of the rotating shaft are respectively provided with a second wing column along the axial direction of the rotating shaft, and the two second wing columns are respectively accommodated in the two large chambers and Contacting the cavity wall of the cavity to divide each large cavity into two small chambers; respectively, on the two second wing posts, a through groove capable of connecting the corresponding two small chambers a slot penetrating the rotating shaft is disposed between the bottoms of the two through slots, the blade is movably inserted in the slot, and the two ends of the blade are respectively configured to cooperate with the corresponding through slots to correspond A mating portion of the fluid medium in the two small chambers that flows unidirectionally along the through-groove.

The notches at the two ends of the two through grooves are respectively set to be large and small, and the size distributions of the two through grooves are sequentially arranged along the same rotation direction; the through grooves are provided in the middle portion of the wing column.

The rotating shaft comprises a first column body, a second column body and a cylindrical body arranged in the middle; the inner end of the first column body is connected with one end of the cylinder body, and the inner side end of the second column body is cylindrical The other ends of the body are connected; the cylinder and the second cylinder are all embedded in the cavity of the rotating sleeve, and the first cylindrical portion is embedded in the cavity of the rotating sleeve; the slot and the two The second wing columns are respectively disposed in the second cylinder.

Further, the invention further includes an end cover having an annular structure and a sealing ring; the end cover passes through the front portion of the rotating shaft, and the inner side portion of the inner end surface of the end cover is pressed against the outer end edge of the central portion of the rotating shaft, An outer portion of the inner end surface of the end cap is fitted on the end surface of the rotating sleeve to limit the rotating shaft in the rotating sleeve; a sidewall of the middle portion of the rotating shaft is provided with a groove for accommodating the sealing ring along the circumference thereof; The seal is fitted in the channel.

Further, the invention further comprises a spacer having an annular structure; the spacer abuts between the inner side of the inner end surface of the end cover and the outer end surface of the middle portion of the rotating shaft.

Each of the end walls of the sleeve is provided with a groove corresponding to each of the large chambers.

One side of one end portion of the blade is provided with a step inward; the table surface of the step abuts against a groove edge of one end of the slot to limit the end of the blade to the slot At the slot.

The groove wall of the through groove is a slope structure corresponding to the large and small mouths, and the fitting portion of the end portion of the blade is an inclined wall structure which is respectively disposed on both sides thereof to match the slope structure of the groove.

The groove wall of the through groove is a curved surface structure corresponding to the large and small opening, and the engaging portion of the end portion of the blade is an arc-shaped wall structure which is respectively disposed on both sides thereof to match the curved surface structure of the through groove.

The groove wall of the through groove is a step structure corresponding to the large and small opening, and the fitting portion of the end portion of the blade is a block structure capable of pressing against the table surface of the step structure.

A cushioning device of the present invention is further provided with a venting groove on the rotating sleeve for preventing excessive air from remaining in the sealed cavity during installation. The limitation of the blade of the invention in the slot can also be achieved by a plug, that is, a transparent jack is formed in the corresponding side wall of the blade, and one end of the two second wing posts is correspondingly arranged on the rotating shaft. A long hole in the end face that penetrates its slot and matches the insertion hole of the blade in the direction of the axis, when the blade is inserted into the slot of the rotating shaft, only a latch is inserted into the long hole from the end of the rotating shaft , the blade can be restrained in the slot. In addition, the notches of the two through slots of the present invention can also be separated into large and small openings. At this time, the axes of the two second wing posts of the rotating shaft are dislocated with respect to the axis of the rotating shaft, that is, the notches of the two through grooves are not symmetrical with each other.

The invention has the beneficial effects that: since the rotating shaft of the device and the toilet lid are interlocked with each other, that is, the rotation of the rotating shaft can open or close the toilet lid, and the rotating shaft is set in the cavity of the rotating sleeve, and together with the rotating sleeve The first wing column divides the cavity of the rotating sleeve into four small chambers; in addition, the blades are movably inserted into the slots of the rotating shaft, and the engaging portions of the two ends of the blade respectively correspond to the two through grooves of the rotating shaft Cooperating, the fluid medium in the two small chambers corresponding to the two through grooves of the rotating shaft can realize one-way circulation under the rotation of the rotating shaft, that is, the fluid medium in the four small chambers can be rotated under the rotating shaft The two ends of the blade are respectively matched with the two through grooves or misaligned to realize one-way circulation of the fluid medium, so that the rotating shaft can be rotated rapidly or slowly, so that the toilet cover can be opened easily and without hindrance. And can achieve a slow decline when closed. Therefore, the device utilizes the pressure change of the fluid medium of the four small chambers of the sleeve to push the rotation speed of the shaft to realize the action process of the toilet lid, which not only greatly improves the service life of the toilet lid, but also maintains the toilet lid. And the aesthetics of the toilet body. At the same time, the buffer device has the characteristics of simple structure, convenient assembly, reliable use and stability.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, a cushioning device of the present invention is not limited to the embodiment.

DRAWINGS

1 is a schematic exploded view of the first embodiment of the present invention;

2 is a schematic structural view of a rotating sleeve of the first embodiment of the present invention;

Figure 3 is a cross-sectional view showing a rotary sleeve of the first embodiment of the present invention;

4 is a schematic structural view of a rotating shaft of the first embodiment of the present invention;

Figure 5 is a schematic view showing the structure of a blade of the present invention;

Figure 6 is a schematic view showing the structure of the blade of the present invention (after the blade is turned over in Figure 5);

Figure 7 is a schematic view showing the overall structure of the present invention;

Figure 8 is a side view of the first embodiment of the present invention;

Figure 9 is a cross-sectional view of the first embodiment of the present invention taken along line A-A of Figure 8;

Figure 10 is a cross-sectional view of the first embodiment of the present invention taken along line B-B of Figure 8;

Figure 11 is a cross-sectional view (I) of the first embodiment of the present invention;

Figure 12 is a view showing an open state of the passage corresponding to Figure 11;

Figure 13 is a cross-sectional view (II) of the first embodiment of the present invention;

Figure 14 is a view showing a closed state of the passage corresponding to Figure 13;

Figure 15 is a schematic view showing the assembly structure of the rotating shaft and the blade of the second embodiment of the present invention;

Figure 16 is a schematic view showing the assembly structure of the rotating shaft and the blade of the third embodiment of the present invention;

Figure 17 is a schematic view showing the assembly structure of the rotating shaft and the blade (in the open state of the passage) of the fourth embodiment of the present invention;

Figure 18 is a schematic view showing the assembly structure of the rotating shaft and the blade (in the closed state of the passage) of the fourth embodiment of the present invention;

Figure 19 is a schematic view showing the assembly structure of the rotating shaft and the blade of the fifth embodiment of the present invention.

detailed description

The first embodiment of the present invention, as shown in FIG. 1 to FIG. 10, a buffer device includes a rotating sleeve 1, a blade 2 and a rotating shaft 3; the rotating sleeve 1 is provided with a cavity 11; the cavity 11 Two

first wing posts

12, 13 are disposed in the cavity wall along the axial direction of the rotating sleeve 1; the rotating shaft 3 is movably fitted in the cavity 11, and the axial wall of the rotating shaft 3 and the two

first wing posts

12, 13 Contacting to partition the cavity 11 into two large chambers; the viscous fluid medium is filled in the closed space formed by the cavity 11 and the rotating shaft 3 of the rotating sleeve 1, and the shaft wall of the rotating shaft 3 is along both sides of the rotating shaft 3 Each of the axial directions is provided with a

second wing post

331, 332. The two

second wing posts

331, 332 are respectively accommodated in two large chambers and are in contact with the cavity wall of the cavity 11 to separate each large chamber. Two

small chambers

14, 16 and 15, 17 are formed; the middle portions corresponding to the two

second wing posts

331, 332 are respectively provided to connect the corresponding two

small chambers

14, 16 and 15, 17 The through

slots

3311, 3321, the notches at the two ends of the two through

slots

3311, 3321 are respectively set to be large and small, and the size distributions of the two through

slots

3311, 3321 are sequentially set along the same rotation direction. A slot 333 penetrating the rotating shaft 3 is disposed between the bottoms of the two through

slots

3311, 3321, and the blade 2 is movably inserted into the slot 333, and the two ends of the blade 2 are respectively provided with corresponding The through

grooves

3311, 3321 are matched such that the two

small chambers

14, 16 corresponding to the through grooves 3311 and the fluid medium in the two

small chambers

15, 17 corresponding to the through grooves 3321 can be unidirectional along the through

grooves

3311, 3321, respectively.

Flowing mating portions

22, 23.

among them,

The rotating shaft 3 includes a first cylinder 31, a second cylinder 33 and a cylindrical body 32 disposed at the center, and the inner end of the first cylinder 31 is in contact with one end of the cylinder 32, and the second cylinder 33 The inner end of the cylinder is connected to the other end of the cylinder 32, and the circular body 32 and the second cylinder 33 are all embedded in the cavity 11 of the sleeve 1, and the first cylinder 31 is partially embedded in the cavity of the sleeve 1. 11; the slot 333 and the two second wing posts 331, 332 are respectively disposed in the second cylinder 33;

Further, the present invention further includes an end cap 6 having a ring structure, a sealing ring 4 and a spacer 5 having an annular structure; the end cap 6 passes through the front portion of the rotating shaft 3 (i.e., the first cylinder 31) And the inner side portion of the inner end surface of the end cap 6 is pressed against the outer end edge of the middle portion of the rotating shaft (i.e., the cylindrical body 32), and the outer side portion of the inner end surface of the end cover 6 is fitted to the rotating sleeve 1 The end surface is arranged to limit the rotating shaft 3 in the rotating sleeve 1; the side wall of the central portion of the rotating shaft (ie, the cylindrical body 32) is provided with a channel 321 for accommodating the sealing ring 4 along the circumference thereof; the sealing ring 4 is set In the channel 321; the spacer 5 abuts between the inner side of the inner end surface of the end cover 6 and the outer end surface of the rotating shaft (ie, the cylindrical body 32);

The end wall of the rotating sleeve 1 is respectively provided with a section of

grooves

141, 171 corresponding to each large chamber;

A step 21 is disposed inwardly on both sides of one end portion of the blade 2; the table surface of the step 21 abuts against a groove along one end of the slot 333 to limit the end of the blade 2 to The slot of the slot 333;

The groove walls of the through

grooves

3311 and 3321 are respectively configured as a slope structure corresponding to the large and small openings, and the

fitting portions

22 and 23 of the both end portions of the blade 2 are inclined surfaces formed on the both sides thereof with the through

grooves

3311 and 3321, respectively. Fitted inclined wall structure;

The rotating sleeve 1 is further provided with a venting groove for preventing too much air from remaining in the sealed cavity 11 during installation.

A cushioning device of the present invention, as a joint between the toilet lid and the toilet body, the rotating shaft 3 is connected with the toilet lid, that is, the rotating shaft 3 can drive the toilet lid to open or close, and the specific action process is shown in the drawing. 11- Figure 14. 11 and FIG. 12 show a process in which the rotating shaft 3 drives the toilet cover to open: firstly, the rotating shaft 3 is rotated clockwise, and the fluid medium in the small chamber 14 is pressed by the rotating shaft 3 to react to the engaging portion 22 at one end of the blade 2, that is, The blade is located at the second position, so that the originally closed passage between the engaging portion 22 of the blade 2 and the inclined surface structure of the through groove 3311 of the rotating shaft 3 is opened, that is, the inclined portion of the fitting portion 22 of the blade 2 and the through groove 3311 of the rotating shaft 3 The spaces no longer coincide with each other, but are offset from each other by an angle so that the fluid medium can flow from the small chamber 14 to the small chamber 16 without resistance from the staggered angle; similarly, the fluid medium in the small chamber 17 is also subjected to The pressing of the rotating shaft 3 counteracts the engaging portion 23 of the other end of the blade 2, that is, the blade is located at the second position, thereby pushing the passage between the engaging portion 23 of the blade 2 and the inclined structure of the through groove 3321 of the rotating shaft 3, thereby The fluid medium can flow from the small chamber 17 to the small chamber 15 without resistance; at the same time, when the rotating shaft 3 drives the blade 2 to straddle the groove 141 and the groove 171, the fluid medium in the small chamber 14 can also Flowing into the small cavity in the groove 141 16, 17 and the small chamber of the fluid medium may flow in the small chamber 15 from the recess 171. Therefore, at this time, the rotation of the rotary shaft 3 is smooth and the speed is fast, so that the toilet lid can be opened easily and without hindrance.

A buffering device of the present invention, as shown in FIG. 13 and FIG. 14, the specific process of the rotating shaft 3 driving the toilet lid to close is: firstly rotating the rotating shaft 3 counterclockwise, the fluid medium in the oil chambers 16, 15 are subjected to The pressing of the rotating shaft 3 respectively reacts to the engaging portions 22, 23 at both ends of the blade 2, and the blades are located at the second position, thereby pushing the mating portion 22 of the blade 2 with the inclined structure of the through groove 3311 of the rotating shaft 3 and the other of the blade 2 The originally opened passage between the mating portion 23 and the inclined structure of the other through groove 3321 of the rotating shaft 3 is slowly closed, that is, the mating portion 22 of the blade 2 and the inclined surface structure of the through groove 3311 of the rotating shaft 3 are gradually adhered to each other while the blade The other mating portion 23 of the second portion and the sloped structure of the other through groove 3321 of the rotating shaft 3 are also gradually adhered to each other, thereby gradually preventing the fluid medium in the small chamber 16 from flowing from the passage to the small chamber 14 and the small chamber 15 The fluid medium flows from the passage to the small chamber 17. Since the rotating shaft 3 just starts to rotate, the two second wing posts 331, 332 respectively span over the two

grooves

141, 171, so that the fluid medium in the small chamber 16 can also flow from the groove 141 into the small chamber 14. Similarly, the fluid medium in the small chamber 15 can also flow from the recess 171 into the small chamber 17, so that the rotational speed of the rotating shaft 3 is faster at this time, and thus the descending speed of the toilet lid is relatively fast. As the rotating shaft 3 continues to rotate, the two second wing posts 331, 332 of the rotating shaft 3 are gradually separated from the two

grooves

141, 171, respectively, so that the fluid medium in the small chamber 16 can only flow from the passage to be closed to the small. In the chamber 14, in the same way, the fluid medium of the small chamber 15 can only flow from the passage to be closed to the small chamber 17, so that the speed at which the rotating shaft 3 drives the toilet lid to fall is slow. Over time, the velocity of the small chamber 16 to the small chamber 14 is slower and slower and tends to stop; similarly, the velocity of the fluid medium of the small chamber 15 to the small chamber 17 is also slower and slower. And gradually tends to stop, therefore, at this time, the rotational speed of the rotating shaft 3 is slower and slower, so that the descending speed of the toilet lid is also slower and slower, and finally stops falling as the rotating shaft 3 stops rotating. Obviously, during the closing process, the toilet lid first drops at a faster rate and then decreases at a slower speed. The toilet lid first drops at a relatively fast speed, which can shorten the closing time of the toilet lid to reduce the smell of the toilet; the toilet lid is lowered at a slower speed, which can prevent the toilet lid from sitting on the toilet body due to the falling speed too fast. An impact occurs, which in turn causes damage to the toilet lid or the toilet body.

Embodiment 2, referring to FIG. 15, a buffer device of the present invention is different from the above embodiment in that the through groove 3311' of the rotating shaft 3' and the groove wall of the other through groove correspond to the size of the opening. In the curved surface structure, the engaging portion 22' at one end of the blade 2' and the engaging portion at the other end are arc-shaped wall structures respectively provided on both sides thereof to match the arc-shaped structure of the two-way grooves of the rotating shaft 3'.

Embodiment 3, referring to FIG. 16, a buffer device of the present invention is different from the above two embodiments in that the groove walls of the two-way grooves 3311'' and 3321'' of the rotating shaft 3'' correspond to each other. In the step structure of the large and small opening, the fitting portion 22'' at one end of the blade 2'' and the engaging portion at the other end are a block structure capable of pressing against the table surface of the step structure.

Embodiment 4, please refer to FIG. 17 and FIG. 18, a buffer device of the present invention is different from the above three embodiments in that the slots of the two through slots can also be separated into large and small ports, and the rotation shaft 30 thereof The two second wing posts 301, 302 are misaligned with respect to the axis of the rotating shaft 30, that is, the notches of the through grooves 3011 on the second wing post 301 and the notches of the through grooves on the second wing post 302 are not symmetrical to each other. In addition, the slots of the two through slots are not divided into large and small openings. Since the two second wing posts 301, 302 are misaligned with respect to the axis of the rotating shaft 30, when the blade 20 is inserted into the slot, and when the two ends of the blade 20 are respectively offset from the notches of the two through grooves, At an angle, the fluid medium can pass through the staggered angle, at which point the oil passage is in an open state; when both ends of the vane 20 cover the notch side of the two-way groove, the fluid medium cannot pass from the vane 20 and The two passages pass between each other, and at this time, the oil passage is closed. Therefore, in this embodiment, a cushioning device of the present invention can also achieve easy and unobstructed opening of the toilet lid and closing the toilet lid at a rapid and slow descending speed.

The fifth embodiment, as shown in FIG. 19, is a buffering device of the present invention, which differs from the first embodiment in that the limiting function can also be realized by a latch 7 between the blade 2 and the rotating shaft 3. The specific method is: opening a transparent insertion hole 24 in the corresponding side wall of the blade 2, and opening a hole in the axial direction of the end surface of the rotating shaft 3 corresponding to the end of the two second wing posts The long insertion hole 334 which is matched with the insertion hole 24 of the blade 2, after the blade 2 is inserted into the slot 333 of the rotary shaft 3, only the insertion pin 7 is inserted into the long insertion hole 334 at the end face of the end of the rotary shaft 3, The blade 2 can be restrained in the slot 333.

The above embodiments are only used to further illustrate a buffer device of the present invention, but the present invention is not limited to the embodiments, and any simple modifications, equivalent changes, and modifications made to the above embodiments in accordance with the technical spirit of the present invention are The scope of protection of the technical solution of the present invention.

Industrial applicability

The rotation of the rotating shaft of the device can realize the opening or closing of the toilet cover, and the rotating shaft is set in the cavity of the rotating sleeve, and the cavity of the rotating sleeve is divided into four small chambers together with the two first wing posts of the rotating sleeve. In addition, the blade is inserted into the slot of the rotating shaft, and the engaging portions of the two ends of the blade are respectively matched with the two through slots of the rotating shaft, so that the two small chambers corresponding to the two through slots of the rotating shaft respectively The fluid medium can be unidirectionally circulated under the rotation of the rotating shaft, so that the rotating shaft can be rotated rapidly or slowly, so that the toilet lid can be opened easily and without hindrance, and can be slowly lowered when closed.

Claims

The utility model relates to a buffer device, which comprises a rotating sleeve, a blade and a rotating shaft; a cavity is arranged in the rotating sleeve; and two first wing columns are arranged in the cavity wall of the cavity along the axial direction of the rotating sleeve The rotating shaft is set in the cavity, and the shaft wall of the rotating shaft is in contact with the two first wing columns to divide the cavity into two large chambers; the closed space formed by the rotating sleeve cavity and the rotating shaft is filled a viscous fluid medium, the two sides of the shaft wall of the rotating shaft are respectively provided with a second wing column along the axial direction of the rotating shaft, and the two second wing columns are respectively accommodated in the two large chambers and are in contact with the cavity wall of the cavity In order to divide each large chamber into two small chambers; two second wing posts are respectively provided with through grooves for communicating the corresponding two small chambers, and the groove bottoms of the two through grooves There is a slot penetrating the rotating shaft, the blade is movably inserted in the slot, and is movable between the first position and the second position, and both ends of the blade are respectively provided with corresponding through slots Cooperating with the unidirectional flow of the fluid medium in the corresponding two small chambers along the through groove; the blade is in the first Position, the fluid medium in the four small chambers can be pushed under the rotary compression of the rotating shaft, and the two ends of the blade respectively cooperate with the corresponding through grooves to close the fluid medium passage grooves in the corresponding two small chambers, The flow of the fluid is hindered; the blade is in the second position, and the two ends of the blade are respectively displaced from the corresponding through grooves, and the fluid medium flows smoothly.
The damper device according to claim 1, wherein the notches at the two ends of the two through grooves are respectively formed as large and small ports, and the size distributions of the two through grooves are sequentially arranged along the same rotation direction; The through slot is provided in the middle of the wing column.
The cushioning device according to claim 1, wherein said rotating shaft comprises a first cylinder integrally provided, a second cylinder and a cylinder disposed at a middle portion; an inner end of the first cylinder and a cylinder One end of the second cylinder is connected to the other end of the cylinder; the cylinder and the second cylinder are all embedded in the cavity of the rotating sleeve, and the first cylinder is partially embedded in the chamber In the cavity of the rotating sleeve; the slot and the two second wing posts are respectively disposed in the second cylinder.
The cushioning device according to claim 1, further comprising an end cap having an annular structure and a sealing ring; the end cap passing through the front portion of the rotating shaft and the inner end surface of the end cap The side portion is pressed against the outer end circumference of the middle portion of the rotating shaft, and the outer portion of the inner end surface of the end cover is fitted on the end surface of the rotating sleeve to limit the rotating shaft in the rotating sleeve; the upper edge of the side wall of the rotating shaft A circumference of the channel for receiving the sealing ring is provided in the circumference; the sealing ring is fitted in the channel.
The cushioning device according to claim 4, further comprising a spacer having an annular structure; the spacer abutting against a back side of the inner end surface of the end cap and a middle portion of the rotating shaft Between the outer end faces.
The cushioning device according to claim 1, wherein each of the end walls of the sleeve is provided with a groove corresponding to each of the large chambers.
The cushioning device according to claim 1, wherein a step of each of the one end portion of the blade is provided with a step inward; the table faces of the step respectively abut against the groove edge of one end of the slot The end of the blade is constrained at the slot of the slot.
The cushioning device according to claim 2, wherein the groove wall of the through groove is a sloped structure corresponding to the large and small opening, and the engaging portion of the end portion of the blade is a slope which is respectively disposed on the two sides thereof and the through groove A structurally adapted oblique wall structure.
The cushioning device according to claim 2, wherein the groove wall of the through groove is a curved surface structure corresponding to the large and small opening, and the fitting portion of the end portion of the blade is respectively disposed on the two sides thereof with the through groove A curved wall structure with a curved surface structure.
The cushioning device according to claim 2, wherein the groove wall of the through groove is a step structure corresponding to the large and small opening, and the engaging portion of the end portion of the blade is capable of being pressed against the table surface of the step structure. Block structure.