TWI757047B - Hydraulic buffer device - Google Patents

Abstract

A hydraulic buffer device, comprising a pipe unit defining an inner cavity and an outer cavity, a buffer unit penetrating the inner cavity and partitioning the inner cavity to form a first cavity and a second cavity, connected to the The throttle unit of the pipe unit, and a shaft unit connected to the buffer unit. The buffer unit and the pipe unit define a first flow path which can be blocked and allows fluid to flow from the second chamber to the first chamber in one direction. The throttle unit and the pipe unit define a second flow path that allows fluid to flow bidirectionally between the second chamber and an outer chamber, and allows fluid to flow unidirectionally from the first chamber to the second chamber through the outer chamber A third flow path of the chamber. Thereby, the required buffering effect can be achieved through the change of these flow paths, which is not only simple in structure, but also suitable for use as a hinge connecting different types of door frames and door leaves, or a clamping device for holding glass doors.

Description

Hydraulic buffer device

The present invention relates to a buffer device, in particular to a hydraulic buffer device capable of providing a buffer effect.

As disclosed in ROC Patent No. I654363, a conventional hinge device includes a first sheet for fixing two objects, inserted between the first sheets and synchronized with the first sheets Turning two kit unit. In this way, when an external force acts on any object, the buffering effect produced by the hydraulic module in one of the kit units is used to control the relative displacement speed of the object to achieve the buffering effect.

However, the oil circuit design of the hydraulic module is relatively complex, and there is still room for improvement in terms of the number of components, cost, processing difficulty, and assembly procedures. More importantly, as shown in Figure 4 of Patent No. I654363 , the one of the kit units is pushed against each other by the inclined plane between the shaft segment and the action piece, and the hydraulic module is triggered to achieve the buffering effect, which not only extends the overall length, but is only suitable for use when matched with another kit unit. The general leaf hinge has the disadvantage of being limited in use.

Therefore, the purpose of the present invention is to provide a multi-purpose hydraulic buffer device with simplified structure and easy installation.

Therefore, the hydraulic buffer device of the present invention includes a pipe unit, a buffer unit, a throttle unit, and a shaft unit.

The pipe unit extends along a first axis direction and defines an inner cavity and an outer cavity suitable for accommodating fluid, the pipe unit has an open end, the open end has two high points, and is parallel to the first axis direction along the first axis direction. The high points form two low points spaced apart from the high points with a parallax difference, and four slopes connecting the high points and the low points.

The buffer unit is displaceably inserted in the inner cavity along the first axis direction, and partitions the inner cavity to form a first cavity and a second cavity communicating with the outer cavity, and is defined with the pipe unit A first flow path that can be blocked and allows one-way flow of fluid from the second chamber to the first chamber.

The throttling unit is connected to the tube unit and closes the inner cavity and the outer cavity, and defines a second flow path with the tube unit that allows fluid to flow bidirectionally between the second chamber and the outer cavity, and allows fluid to flow in both directions. The fluid flows unidirectionally from the first chamber to a third flow path of the second chamber through the outer chamber.

The shaft unit is connected to the buffer unit, and can be operatively linked to the buffer unit to displace along the first axis direction. When the buffer unit is linked to displace in a direction opposite to the direction of the second chamber, the first chamber is first compressed The fluid in the chamber enters the second chamber through the second flow path and the third flow path. When the buffer unit is linked to displace in the opposite direction of the first chamber, the fluid in the second chamber is first compressed by the first chamber. The second flow path enters the first chamber, and after the first flow path is opened, the fluid compressed in the second chamber enters the first chamber through the first flow path and the second flow path.

The effect of the present invention is: through the change of these flow paths, the required buffer effect is achieved, not only the structure is simplified, but also it is suitable for use as a hinge connecting different types of door frames and door leaves, or for clamping glass doors. device.

1 and 2, a first embodiment of the hydraulic buffer device of the present invention is suitable for connecting two objects 11, 12 (such as a door leaf and a door frame, the door leaf and the door frame form an included angle, and the included angle is 0°~ 200 degrees, when it is 0 degrees, it is in the closed state, and when it is greater than 0 degrees, it is in the open state). In this embodiment, the object 11 is a door leaf made of wood or metal material.

The hydraulic buffer device includes a blade unit 2 , a pressure accumulating unit 3 , a pipe unit 4 , a buffer unit 5 (as shown in FIG. 4 ), a throttle unit 6 , and a shaft unit 7 .

The blade unit 2 includes a first blade 21 and a second blade 22, and two washers 25, which are pivotally connected to each other and can be operatively rotated under an external force. The first sheet 21 has two inner surfaces 211 surrounding a first axis X. One of the inner surfaces 211 has two planar segments 212 facing each other. The second sheet 22 has an inner surface 221 surrounding the first axis X and defining a duct 20 (as shown in FIG. 13 ) with the inner surface 211 . The inner surface 221 has two opposite channels 222 extending along the first axis X. The washers 25 close both ends of the pipe 20 and are welded to the inner surfaces 211 by welding.

2 , 3 and 4 , the pressure accumulating unit 3 includes an inner sleeve 31 , a pressure accumulating sleeve 32 , an elastic return element 33 , a pressure adjusting bolt 34 , and an auxiliary elastic element 35 . The pressure accumulating sleeve 32 has a rotating portion 321 rotatably inserted in the inner sleeve 31 , and the rotating portion 321 extends along the direction of the first axis X and is inserted into the second blade 22 . The two limiting portions 322 in the channel 222 are equal. The rotating portion 321 defines a limiting hole 323 extending along the first axis X direction. In this embodiment, the elastic return element 33 is a torsion spring, and has a first end 331 pressed against the rotating portion 321 and a second end 332 opposite to the first end 331 . The pressure regulating bolt 34 is screwed through the inner sleeve 31 along the first axis X direction and is forced against the rotating part 321 of the pressure accumulating sleeve 32, and through the change of the screwing depth, the pressure accumulating sleeve 32 is forced relative to the pressure accumulating sleeve 32. The pipe unit 4 is displaced. The auxiliary elastic element 35 is disposed between the pressure regulating bolt 34 and the pressure accumulating sleeve 32 along the direction of the first axis X, and partially penetrates the limiting hole 322 .

The pipe unit 4 is spaced apart from the limiting portions 322 of the pressure accumulating sleeve 32 by a scalable distance L (see FIG. 13 ), see FIGS. 4 , 6 and 10 , and includes an inner cavity 401 defining an inner cavity 401 . The tube 41 , an outer tube 42 surrounding the inner tube 41 and defining an outer cavity 402 with the inner tube 41 , a shaft sleeve 43 surrounding the outer tube 42 , and an inner bushing 45 . The inner cavity 401 and the outer cavity 402 are suitable for containing fluid. In this embodiment, the fluid is hydraulic oil.

The inner tube 41 has a first tube section 411 and a second tube section 412 extending in opposite directions along the first axis X direction. The inner diameter D2 of the second pipe section 412 is larger than the inner diameter D1 of the first pipe section 411, and has a first through hole 413 and a second through hole 414, A first inner groove 415 formed on an outer surface and communicated with the outer cavity 402 and the inner cavity 401 through the first through hole 413 , and communicated with the outer cavity 402 and the inner cavity 401 through the second through hole 414 a second inner groove 416 .

The shaft sleeve 43 has two flat surfaces 431 formed on two opposite sides, an open end 432 formed on one edge, and two matching grooves 433 formed on the inner surface along the first axis X direction. The planes 431 are attached to the plane segments 212 , so that the shaft sleeve 43 and the first blade 21 are linked together.

The inner bushing 45 is inserted into the shaft sleeve 43 and is adjacent to the open end 432, and has a curved surface 451 formed at one end and exposed outside the open end 432, and formed on two sides and engaged with the shaft sleeve The two bumps 452 of the groove 433 are opposite to each other. The curved surface 451 has two high points 453 , and two low points 454 which are spaced apart from the equal high points 453 and form a parallax difference along the first axis X direction from the equal high points 453 .

The buffer unit 5 includes a buffer member 51 , a first valve member 52 , a first elastic element 53 , and a C-shaped buckle 54 .

Referring to FIG. 4 , FIG. 14 and FIG. 15 , the buffer member 51 is displaceably inserted in the inner cavity 401 along the first axis X direction, and divides the inner cavity 401 to form a first communication with the outer cavity 402 The chamber 501 and a second chamber 502 have a buffer groove 511 (as shown in FIG. 15 ) formed on an outer peripheral surface 514 and extending along the direction of the first axis X. A buffer recess 512 on one side, and a first flow channel 513 communicating with the buffer recess 511 and the buffer recess 512 (as shown in FIG. 15 ). The buffer member 51 is displaced relative to the inner tube 41 between a pressure accumulation position (as shown in FIG. 13 ), a pressure release start position (as shown in FIG. 14 ) and a pressure release end position (as shown in FIG. 15 ). In the decompression starting position and the decompression ending position, the buffer member 51 is adjacent to the second pipe section 412 of the inner pipe 41, and a gap is formed between the outer peripheral surface 514 and the inner surface of the second pipe section 412, so that the A channel 510 for fluid to pass is defined between the buffer groove 511 and the second pipe section 412 , and the channel 510 and the first flow channel 513 form a first flow path. In the pressure accumulation position, the buffer member 51 is adjacent to the first pipe section 411 , and the outer peripheral surface 514 is in airtight contact with the first pipe section 411 of the inner pipe 41 to block the first flow path.

The first valve member 52 is disposed in the buffer recess 512 of the buffer member 51 , and can openably close the first flow channel 513 .

Referring to FIG. 4 and FIG. 10 , the first elastic element 53 is forced between the first valve element 52 and the throttle unit 6 to constantly generate a biasing force for the first valve element 52 to close the first flow passage 513 , so that the The fluid can only enter the second chamber 502 from the first chamber 501 through the first flow path in one direction.

The C-shaped buckle 54 is disposed on the inner surface of the buffer cavity 512 to limit the movement of the first valve member 52 only in the buffer cavity 512 and prevent the first valve member 52 from falling out of the buffer cavity 512 .

4, 5 to 7, the throttling unit 6 includes a first plug 61 and a second plug 62, a throttling valve 63, an airtight gasket 64, A second valve member 65 , a second elastic member 66 , and a bolt member 67 .

The first plug 61 is connected to one end of the outer tube 42 and is pressed against one end of the inner tube 41 , and has a shaft hole 611 extending from one end face in the direction of the first axis X to the other end face for the shaft unit 7 to pass through. .

13 , 14 and 15 , the second plug 62 is connected to the other end of the outer tube 42 and pressed against the other end of the inner tube 41 , and has an outer surface facing outward along the first axis X direction A screw hole 621 and a throttle hole 622 extending and communicating with the second chamber 502, a second flow channel 623 communicating with the throttle hole 622 and the first through hole 413, are formed on an outer peripheral surface and face the One end surface of the second chamber 502 extends along the direction of the first axis X, a plug groove 624, and a plug recess 625 formed on the outer peripheral surface and extending in the direction perpendicular to the first axis X, and a Bolt hole 626. The diameter of the orifice 622 gradually increases from one end adjacent to the second chamber 502 toward the other end away from the second chamber 502 . The orifice 622 , the second flow channel 623 , the first through hole 413 and the first inner groove 415 form a second cavity for fluid to enter and exit the outer cavity 402 and the second cavity 502 in both directions. flow path. The second through hole 414 , the second inner groove 416 and the plug groove 624 form the third flow path.

Referring to FIG. 4 , FIG. 5 to FIG. 7 , the throttle valve 63 has a screwing portion 631 that is screwed into the screw hole 621 along the first axis X direction, and is displaceably inserted in the throttle hole 622 The diameter of the throttling portion 632 gradually increases from one end adjacent to the second chamber 502 to the other end away from the second chamber 502 . In this way, through the change of the screwing depth of the screwing portion 631 and the screw hole 621 , the aperture between the throttle portion 632 and the throttle hole 622 is scaled.

The airtight gasket 64 is disposed between the throttle valve 63 and the second plug 62 .

The second valve member 65 is disposed in the plug member recess 625 and can openably close the second through hole 414 .

The second elastic element 66 is forced between the plug recess 625 and the second valve member 65 to constantly generate a biasing force for the second valve member 65 to close the second through hole 414 , so that the fluid can only be unidirectional Enter the second chamber 502 from the outer chamber 402 through the third flow path.

The bolt 67 is inserted between the bolt hole 626 of the second plug 62 and the inner tube 41 and the outer tube 42 along the direction perpendicular to the first axis X, and is welded to the outer tube 42 . Thereby, the second plug 62, the inner tube 41 and the outer tube 42 can be more stably connected as a whole.

4 , 8 and 9 , in this embodiment, the shaft unit 7 includes a first shaft member 71 and a second shaft member 72 extending along the first axis X direction, a shaft bolt 73 , and a Spacer 74. The first shaft member 71 is connected to the buffer member 51 , and passes through the inner bushing 45 and the shaft hole 611 of the first plug member 61 along the first axis X direction to pass through the outer tube 42 . The second shaft member 72 is screwed to the first shaft member 71 , and is displaceably inserted into the limiting hole 323 of the pressure accumulating sleeve 32 and pressed against the auxiliary elastic element 35 so that the second shaft The shaft member 72 is subjected to the elastic force of the auxiliary elastic element 35 and is constantly displaced in the opposite direction to the pressure accumulating sleeve 32 . The shaft bolt 73 passes through the first shaft member 71 along the direction perpendicular to the first axis X and slides on the curved surface 451 of the inner bushing 45 . The washer 74 is fixed between the first shaft member 71 and the second shaft member 73 and is pressed against the second end 332 of the elastic return element 33 . Thereby, the force from the elastic return element 33 is distributed to the shaft unit 7 through the washer 74 , and the force from the shaft bolt 73 is distributed to the shaft through the curved surface 451 of the inner bush 45 . The sleeve 43 and the inner bushing 45 make the shaft unit 7 appear in a floating state, so that the shaft bolt 73 floats and displaces on the curved surface 451 , and produces a complementary effect with the oil pressure buffer.

Referring to FIGS. 4 and 5 , during assembly, the second plug 62 can combine the elastic element 53 , the throttle valve 63 , the airtight gasket 64 , the second valve 65 and the second elastic element 66 , As shown in FIG. 6 , firstly fit with the first pipe section 411 of the inner pipe 41 , and then screw with the outer pipe 42 as shown in FIG. 7 , and then inject fluid (such as hydraulic oil) into the inner pipe 41 , Next, as shown in FIG. 8 , the first shaft member 71 and the buffer member 51 are combined, and as shown in FIG. 9 , the buffer member 51 combined with the first shaft member 71 is inserted into the inner tube 41 , and then , the first plug 61 and the inner bushing 45 are sleeved on the first shaft member 71, and as shown in FIG. 10, the gasket 74 is sleeved on the first shaft member 71, and the first shaft member 71 is screwed. A shaft member 71 and the second shaft member 72 make the washer 74 positioned between the first shaft member 71 and the second shaft member 72, and then combine the first plug member 61 and the outer tube 42 to The fluid can be encapsulated in the inner tube 41 and the outer tube 42, and then, as shown in FIG. 11 and FIG. 12, the semi-finished product shown in FIG. 10 is inserted into the shaft sleeve 43, and the shaft bolt 73 and the first A shaft member 71 completes the assembly of the kit. Finally, as shown in FIG. 2 , the pressure accumulating unit 3 and the sleeve of FIG. 11 are inserted into the pipe 20 of the leaf unit 2 , and the first leaf 21 and the shaft sleeve 43 are welded, and the shaft sleeve is welded. 43 and the outer tube 42, and welding the shaft sleeve 43 and the second plug 62, and finally, welding the washers 25 and the inner surfaces 211 of the first sheet 21, the pressure accumulating unit 3, The shaft sleeve 43 , the buffer unit 5 and the throttle unit 6 are packaged in the pipe 20 of the blade unit 2 , that is, the assembly of this embodiment is completed.

Referring to FIG. 13 , when an external force drives the first sheet 21 to rotate around the first axis X, and opens the door from an angular position of 0 degrees to a door opening angle (about 85 degrees to 95 degrees) left or right, The first blade 21 will synchronously drive the shaft assembly 43 and the inner sleeve 31 to rotate left or right from 0 degrees to about 85-95 degrees. 321 is in an idling state, therefore, when the second blade 22 and the shaft unit 7 are not rotated, the shaft sleeve 43 will link the inner bushing 45 from the surface of the curved surface 451 during the rotation process. The iso-low point 454 is rotated until the iso-high point 453 pushes the shaft bolt 73 to displace toward the elastic return element 33 along the first axis X direction, and reduces the distance between the shaft bolt 73 and the rotating part 321 of the pressure accumulating sleeve 32 . When the distance L is set, the elastic return element 33 is compressed to generate a restoring torsion force, and push the buffer member 51 and the shaft unit 7 to displace in the direction opposite to the second chamber 502 .

Therefore, when the buffer member 51 is displaced to the pressure accumulating position in the direction of the first chamber 501, the volume of the first chamber 501 becomes smaller and the fluid pressure becomes larger, which pushes the first chamber 501. The fluid in the chamber 501 enters the outer chamber 402, and pushes the second valve member 65 to overcome the biasing force of the second elastic element 66 to open the second through hole 414, so that the fluid passes through the first chamber 501 through the first chamber 501. The outer cavity 402 quickly enters the second chamber 502 from the second flow path and the third flow path. At this time, since the fluid can flow faster, the buffer force generated is small, and the resistance when opening the door is also minimized.

Referring to FIG. 14 , when the external force is released, the washer 74 together with the shaft bolt 73 will be subjected to the restoring torsion force of the elastic return element 33 to push the curved surface of the inner bushing 45 against the direction of the pressure accumulating sleeve 32 451, and the high points 453 of the curved surface 451 are gradually displaced toward the low points 454, so that the shaft assembly 43 drives the first sheet 21 to rotate in the opposite direction during the pushing process, and expands the shaft The distance L between the bolt 73 and the rotating portion 321 of the pressure accumulating member 32 is determined. At the same time, the shaft bolt 73 drives the shaft unit 7 to drive the buffer member 51 to displace in the direction opposite to the first chamber 501 .

When the first leaf 21 is closed from the door opening angle (eg, 85 degrees) to a predetermined unresistive door closing angle (eg, 15 degrees) to the right or left, the second chamber 502 from the pressure accumulation position The buffer member 51 displaced to the pressure release starting position will push the fluid in the second chamber 502 slowly from the second flow path because the volume of the second chamber 502 decreases and the fluid pressure increases. The ground enters the first chamber 501 through the outer cavity 402 . At this time, due to the slow flow of the fluid, the generated buffer force is relatively large. Therefore, when the shaft bolt 73 moves from the high point 453 to the low point 454, because the curved surface 451 has an unequal slope slope, The shaft bolt 73 is moved to the low point 454 at a slow moving speed, thereby generating interlocking action to achieve the effect of slow door closing and slowing down the door closing speed.

Referring to FIG. 15 , when the first sheet 21 continues to close the door from the non-resistance door closing angle (eg, 15 degrees) to 0 degrees to the right or left, the buffer member 51 will pass the pressure release starting position and continue to move to At the pressure release end position, at this time, the outer peripheral surface 514 of the buffer member 51 will enter the second pipe section 412 with a larger inner diameter of the inner pipe 41, so that the buffer groove 511 is communicated with the first flow channel 513, and the first channel 513 is connected. A valve member 52 can be opened by the fluid flowing from the buffer groove 511 through the first flow channel 513. Since the channel 510 can communicate with the outer cavity 402 and the first flow channel 513, when the fluid pushes the first valve After the member 52 overcomes the biasing force of the first elastic element 53 to open the first flow channel 513, the fluid will simultaneously enter the first chamber 501 from the second chamber 502 through the first flow path, and flow from the second chamber 501 simultaneously. The chamber 502 enters the first chamber 501 through the second flow path, whereby a balanced pressure is generated between the inner chamber 401 and the outer chamber 402, and fluid flows between the first chamber 501 and the second chamber 502 It can flow smoothly without resistance, so that the door can be smoothly closed to 0 degrees with less buffer force.

Referring to FIGS. 2 , 13 , 14 and 15 , it is worth noting that when the first sheet 21 is momentarily swayed at an angle of 30° to 85°, the outer peripheral surface 514 of the buffer member 51 is in contact with the first sheet 21 . A pipe section 411 is closely matched, and the hydraulic pressure in the first chamber 501 is greater than the hydraulic pressure in the second chamber 502. Therefore, in addition to the damping effect, the first chamber 501 is also caused by the rapid change of the angle. The hydraulic pressure inside increases sharply. At this time, since the first valve member 52 or the second valve member 65 will automatically open under the action of hydraulic pressure, the first chamber 501 is connected to the outer chamber 402 and the second chamber. 502 to maintain the pressure balance between the first chamber 501 and the second chamber 502 .

It should be noted that the present invention is not limited to the effect of buffering and opening and closing the door by rotating the first sheet 21. In other variations of this embodiment, the second sheet 22 can also be driven by an external force to achieve the effect of opening and closing the door. When the first axis X is the center of rotation, through the limiting relationship between the grooves 222 and the limiting portion 322 of the pressure accumulating sleeve 32 , and the distance between the second shaft member 72 and the limiting hole 323 of the pressure accumulating sleeve 32 The limiting relationship drives the shaft unit 7 to rotate synchronously. In this way, when the first blade 21 and the shaft sleeve 43 are fixed, the pressure accumulating sleeve 32 can idle in the inner sleeve 31 with the rotating part 321, and the shaft bolt 73 can also be used in the inner sleeve 31. During the rotation of the shaft unit 7, it slides along the curved surface 451 of the inner bushing 45, and drives the buffer member 51 to displace between the pressure accumulation position, the pressure release start position, and the pressure release end position, and then at When the first leaf 21 opens the door to the opening angle (about 85 degrees to 95 degrees), the distance L between the shaft bolt 73 and the rotating part 321 of the pressure accumulating sleeve 32 is reduced, and the elastic return element 33 is compressed to generate a restoring torque. And make the fluid enter the second chamber 502 quickly from the first chamber 501 through the outer chamber 402 from the second flow path and the third flow path, so as to generate a small buffer force, and when the external force is released and When the first blade 21 is closed from the door opening angle to the non-resistance door closing angle (eg 15 degrees) under the action of the restoring torque, the fluid slowly enters the first chamber 501 from the first flow path through the outer cavity 402, A larger buffer force is generated. Finally, when the first sheet 21 continues to close the door from the predetermined angle (eg, 15 degrees) to 0 degrees, fluid is allowed to flow between the first chamber 501 and the second chamber 502 It flows smoothly without resistance, and can smoothly close the door to 0 degrees with the least buffering force. Thereby, the present invention has no directional restriction when it is mounted.

It should be noted that the throttle valve 63 can be embedded with a hand tool (not shown in the figure), whereby the screw portion 631 and the second plug can be adjusted by rotating the throttle valve 63 with the hand tool The screwing depth of the screw hole 621 of 62 changes the relative position of the throttle portion 632 and the throttle hole 622 , thereby scaling the aperture between the throttle portion 632 and the throttle hole 622 . For example, when the hole is larger, the flow velocity of the second flow path is faster, and the closing speed of the first sheet 21 or the second sheet 22 is faster. When the hole is the largest, it is equivalent to no oil pressure at all Buffer damping effect, only the mechanical sliding resistance of the shaft bolt 73 sliding on the slope of the curved surface 451 of unequal height is used to buffer the speed of closing the door. At this time, the pressure regulating bolt 34 can be rotated to reduce the accumulated pressure torque value, and with the aforementioned mechanical sliding resistance, the closing speed is slowed down and a balanced effect is achieved. On the contrary, when the aperture is smaller, the flow velocity of the second flow path is slower, the damping effect of the oil pressure buffer is greater, and the closing speed of the first sheet 21 or the second sheet 22 is slower. Thereby, the function of adjustable closing speed is achieved.

In addition, the pressure adjusting bolt 34 can be inserted by another hand tool (not shown in the figure), whereby the screwing of the pressure adjusting bolt 34 and the inner sleeve 31 can be adjusted by rotating the pressure adjusting bolt 34 by the hand tool. The pressure accumulating sleeve 32 is forced to displace relative to the pipe fitting unit 4 , and the distance L between the pipe fitting unit 4 and the limiting portions 322 of the pressure accumulating sleeve 32 is scaled, and the elastic return element 33 is changed. amount of compression. Alternatively, by pre-designing the length of the inner sleeve 31 along the first axis X direction, it is also possible to push the pressure accumulating sleeve 32 to displace along the first axis X direction, thereby scaling the relationship between the pipe unit 4 and the pressure accumulating sleeve 32 The distance L between the limiting portions 322 is L. For example, when the distance L is larger, the compressed amount of the elastic return element 33 is smaller, and the restoring torque generated after being compressed is smaller. On the contrary, when the distance L is smaller, the elastic return element 33 is compressed. The greater the compressed amount of 33, and the greater the restoring torque generated after being compressed. In this embodiment, when the compressed amount of the elastic restoring element 33 is 5.3 mm, a restoring torque of about 80Kg can be generated, and when the compressed amount of the elastic restoring element 33 is 6.3 mm, a restoring torque of about 90 Kg can be generated As for the torsion force, when the compressed amount of the elastic return element 33 is 7mm, a return torsion force of about 100Kg can be generated.

When adjusting the restoring torque of the first leaf 21 or the second leaf 22, the pressure adjusting bolt 34 can be operated by hand tools (not shown) only when the object 11 (door leaf) is opened to 90 degrees. At this time, the shaft bolt 73 will float to the position of the high point 453 of the inner bushing 45 and compress the elastic return element 33, thereby ensuring that when the pressure adjusting bolt 34 is adjusted, the elastic return element 33 can still be The space for rebound makes the pipe unit 4 and the limiting portions 322 of the pressure accumulating sleeve 32 spaced apart by an appropriate and scalable distance L. On the contrary, when the object 11 (door leaf) is closed to 0 degrees, the shaft bolt 73 will float to the position of the low point 454 of the inner bushing 45 and release the elastic return element 33. At this time, if the pressure adjusting bolt If the displacement of the elastic return element 34 is too large, the compression amount of the elastic return element 33 will be limited and its function will be lost. The spacer 74 located at the fixed position between the first shaft member 71 and the second shaft member 72 can form a foolproof device, so that the elastic return element 33 maintains the low point 454 of the inner bushing 45. Provides the rebound distance to ensure stable function and improve the safety factor of the product.

And the present invention only needs to change the pressure release starting position of the buffer member 51, that is, adjust the length ratio of the first pipe section 411 and the second pipe section 412 of the inner pipe 41 along the first axis X direction, so as to change the pressure. The non-resistance door closing angle is adjusted to adjust the angle range of the first leaf 21 or the second leaf 22 with a buffering effect when the door is closed. Generally, the range of the non-resistance door closing angle is set below 30 degrees. For example, when the proportional length of the first pipe section 411 is longer, the stroke of the buffer member 51 against the displacement of the first chamber 501 in the first pipe section 411 is longer, and the outer peripheral surface of the buffer member 51 is longer. The longer the time that 514 is in close contact with the inner diameter of the first pipe section 411, the later the first flow path is opened, the smaller the non-resistance door closing angle, on the contrary, when the proportional length of the first pipe section 411 is shorter, the buffer member The shorter the stroke of 51 against the displacement of the first chamber 501 in the first pipe section 411, the faster the outer peripheral surface 514 of the buffer member 51 enters the second pipe section 412 with a larger inner diameter of the inner pipe 41, The faster the first flow path opens, the larger the no-resistance closing angle.

It should be noted that the object 11 to which the hydraulic buffer device of the present invention is applicable is not limited to a door leaf made of wood or metal material. Figure 18 shows a door leaf made of glass material. in:

The first sheet 21 also has two clamping plates 214 extending from an outer surface 213 in a direction away from the first axis X and spaced apart by a distance along the direction perpendicular to the first axis X, and formed between the clamping plates 214 and used for A thickness 215 of the splints 214 is reinforced. The clamping plates 214 are suitable for clamping the glass object 11 to rotate the object 11 relative to the second sheet 22 .

Thereby, the pressure accumulating unit 3, the pipe fitting unit 4, the buffer unit 5, the throttling unit 6 and the shaft unit 7 as disclosed in FIG. 3 to FIG. The shaft bolt 73 interacts with the curved surface 451 of the inner bushing 45, and the flow path changes, and the first sheet 21 together with the glass object 11 opens the door from an angular position of 0 degrees to the left or right. At a door opening angle (about 85 degrees to 95 degrees), the elastic return element 33 is compressed to generate a restoring torsion force. At this time, the internal fluid can flow relatively quickly, so that the door opening is less laborious. Similarly, when the first sheet 21 together with the object 11 is closed from the door opening angle to the left or right to a predetermined non-resistance door closing angle (eg 15 degrees), the internal fluid will flow slowly, resulting in a relatively high Large buffer force, slow down the speed of door closing, and when the first sheet 21 together with the object 11 continues to close the door from the non-resistance door closing angle (such as 15 degrees) to 0 degrees to the right or left, the fluid inside is smooth Flow without resistance, and close the door smoothly to 0 degrees with less cushioning force.

It should be noted that the second leaf 22 is not limited to that shown in FIG. 17 , and is locked to the object 12 (door frame) by the screw holes on the left and right sides with bolts. In other variations of this embodiment, As shown in FIG. 19 , after extending along the direction of the first axis X, the screw holes on the upper and lower sides cooperate with the bolts to be fastened to the object 12 (door frame), whereby the second sheet 22 can be further reduced. The width of the left and right sides is suitable for narrower objects 12 (door frames). In addition, the second leaf 22 is not limited to being locked on the door frame as shown in FIGS. 17 to 19 , in other variations of this embodiment, as shown in FIGS. 20 and 21 , the second leaf 22 may also be There are two plywoods 224 extending from an outer surface 223 in a direction away from the first axis X and suitable for holding the glass-made object 12 , and a meat thickness formed between the plywoods 224 and used to reinforce the plywood 224 225, making the present invention suitable for connecting the glass-made object 11 and the glass-made object 12.

In addition, it should be noted that the first sheet 21 is not limited to connecting the object 11, and the second sheet 22 is not limited to connecting the object 12. In other variations of this embodiment, it can also be as shown in the figure. 22. As shown in FIG. 23 and FIG. 24, make the first leaf 21 suitable for connecting the object 12 (door frame), and make the second leaf 22 suitable for connecting the object 11 (glass made of glass) through the splints 224. door leaf).

Similarly, the first leaf 21 is not limited to that shown in FIG. 23 , and is locked to the object 12 (door frame) by the screw holes on the left and right sides with the bolts. In other variations of this embodiment, it is also possible to As shown in FIG. 25 , after extending along the first axis X direction, the upper and lower side screw holes cooperate with bolts to lock the object 12 (door frame), thereby further reducing the left and right sides of the first leaf 21 , The width of the right two sides, and the narrower object 12 (door frame) is suitable. In addition, the first sheet 22 is not limited to be locked to the door frame as shown in FIGS. 22 to 25 , in other variations of this embodiment, as shown in FIGS. 26 and 27 , the first sheet 21 can pass through the door frame. The splints 214 hold the glass-made object 12 , so that the present invention is suitable for connecting the glass-made object 11 and the glass-made object 12 .

Referring to FIG. 28 , FIG. 29 and FIG. 30 , a second embodiment of the hydraulic buffer device of the present invention is suitable for installation in a cabinet 8 . The cabinet 8 includes two objects, such as a cabinet body 81 and a cabinet door 82 made of glass. The hydraulic buffer device also includes the blade unit 2, the pressure accumulator unit 3, the pipe unit 4, the buffer unit 5, the throttle unit 6, and the shaft unit 7. The differences are:

The leaf unit 2 includes two clamping plates 23 and 24 for clamping the cabinet door 82 . The splint 23 has a non-circular socket 231 formed on a bottom surface.

The pressure accumulating sleeve 32 of the pressure accumulating unit 3 also has an inserting portion 324 extending from the rotating portion 321 along the direction of the first axis X and inserting into the insertion hole 231 of the blade unit 2 .

The pipe unit 4 also includes an outer sleeve 44 embedded in the cabinet 81 . The outer sleeve 44 allows the pressure accumulating unit 3 , the buffer unit 5 , the throttling unit 6 and the shaft unit 7 to pass through along the first axis X, and restricts the rotation of the shaft sleeve 43 .

It should be noted that when the cabinet door 82 is made of wood or metal, the second embodiment of the present invention can omit the leaf unit 2, and directly form a non-circular shape on the bottom surface of the cabinet door 82 for the plug-in portion 324 sockets.

When an external force drives the cabinet door 82 to rotate, it also drives the shaft unit 7 to rotate synchronously during the process of driving the pressure accumulating kit 32 to rotate. In this way, when the outer sleeve 44 and the shaft sleeve 43 are fixed, the shaft bolt 73 of the shaft unit 7 can also slide along the curved surface 451 of the inner sleeve 45 and drive the buffer member 51 to slide in the same direction. The pressure accumulation position, the pressure release start position, and the pressure release end position are displaced, and when the cabinet door 82 is opened to the opening angle (about 85 degrees to 95 degrees), the shaft bolt 73 and the pressure accumulation position are reduced. The distance L of the rotating part 321 of the sleeve 32, and the elastic return element 33 is compressed to generate a restoring torque, and the fluid from the first chamber 501 through the outer chamber 402 from the second flow path and the third flow path rapidly Entering the second chamber 502, a small buffer force is generated, and when the external force is released and the cabinet door 82 is closed from the door opening angle to the non-resistance door closing angle (eg 15 degrees), the fluid flows from the first flow path Slowly enter the first chamber 501 through the outer cavity 402 to generate a large buffer force, and finally, when the cabinet door 82 continues to close from the predetermined angle (eg 15 degrees) to 0 degrees, the fluid is in the The first chamber 501 and the second chamber 502 flow smoothly without resistance, and the door can be smoothly closed to 0 degrees with the minimum buffer force.

According to the foregoing embodiment, the present invention can be applied to different leaf units 2 only by changing the lengths of the shaft unit 7 and the pressure accumulating unit 3, and can be used as a hinge for connecting different types of door frames and door leaves, Or cabinets with doors. And importantly, the pipe unit 4 , the buffer unit 5 , the throttle unit 6 and the shaft unit 7 are not limited to be used with the blade unit 2 and the pressure accumulating unit 3 , in other variations of this embodiment , and can also be used with any other objects that need to provide cushioning force.

Referring to FIGS. 31 to 34 , a third embodiment of the hydraulic buffer device of the present invention is also suitable for connecting the objects 11 and 12 (eg, a door frame and a glass door). The hydraulic buffer device also includes the pressure accumulating unit 3, the pipe unit 4, the buffer unit 5, the throttling unit 6, and the shaft unit 7. The differences are:

The hydraulic buffer device also includes a link unit 9 in place of the blade unit 2 of FIG. 2 .

The linking unit 9 includes a pivot base 91 , a rotating shaft 92 rotatably passing through the pivot base 91 , and a leaf set 93 that rotates synchronously with the rotating shaft 92 . The pivot base 91 defines a receiving space 910 extending along the first axis X direction. The shaft 92 extends along a direction of a second axis Y perpendicular to the first axis X, and has a release surface 921 formed on an outer surface and adjacent to the second axis Y, and formed on the outer surface and away from the A pressing surface 922 of the second axis Y. The blade set 93 is suitable for holding the object 12 (glass door).

The pressure accumulator unit 3 , the pipe fitting unit 4 , the buffer unit 5 , the throttle unit 6 , and the shaft unit 7 are installed in the accommodating space 910 , and the pressure accumulator unit 3 is located between the shaft sleeve 43 and the rotating shaft 92 During this time, the pressure accumulating sleeve 32 is in contact with the rotating shaft 92 and is connected to the first shaft member 71 . In this embodiment, the elastic return element 33 is a compression spring, and is pressed between the pressure accumulating sleeve 32 and the shaft bolt 73 . The shaft bolt 73 is located between the shaft sleeve 43 and the pressure accumulating sleeve 32 .

Thereby, when the object 12 (glass door) is operated to drive the blade set 93 to rotate, and the rotating shaft 92 is rotated to contact the pressure accumulating member 32 with the pressing surface 922 , the pressure accumulating member 32 is forced to rotate. Pressing the first shaft member 71 drives the buffer member 51 to displace between the pressure accumulation position, the pressure release start position, and the pressure release end position in a direction opposite to the first chamber 501 , while the object 12 is displaced. (Glass door) When the door is opened to the opening angle (about 85 degrees to 95 degrees), the distance L between the shaft bolt 73 and the pressure accumulating sleeve 32 is reduced, and the elastic return element 33 is compressed to generate a restoring force, and the fluid flows from the The first chamber 501 quickly enters the second chamber 502 from the second flow path and the third flow path through the outer cavity 402, and generates a small buffer force. When the external force is released and the object 12 (glass door) ) When the door is closed from the door opening angle to the non-resistance door closing angle (such as 15 degrees), the pressure accumulating sleeve 32 is subjected to the restoring force of the elastic return element 33, and the first shaft member 71 is linked to drive the buffer member 51 to reverse Displacement in the direction of the second chamber 502 also causes the fluid to slowly enter the first chamber 501 from the first flow path through the outer chamber 402 to generate a larger buffer force. Finally, the object 12 ( When the glass door) continues to close the door from the predetermined angle (such as 15 degrees) to 0 degrees, the fluid also flows smoothly between the first chamber 501 and the second chamber 502 without resistance, and can be at the minimum buffer force. In this case, when the door is smoothly closed to 0 degrees, the pressure accumulating sleeve 32 is in contact with the release surface 921 of the rotating shaft 92 .

Since those with ordinary knowledge in the art can infer the extended details according to the above description, no further description will be given.

Similarly, the screwing depth of the throttle valve 63 and the second plug member 62 can be adjusted along the first axis X direction by a hand tool (not shown), and the gap between the throttle valve 63 and the throttle hole 622 can be scaled to achieve The purpose of adjusting the closing speed. Or by adjusting the insertion position of the shaft bolt 73 and the first shaft member 71 , the compressed amount of the elastic return element 33 can be changed, and the purpose of adjusting the restoring force can be achieved.

It should be noted that the throttle valve 63 is not limited to be screwed to the second plug 62 in the direction of the first axis X. In other variations of this embodiment, as shown in FIG. 35 , the second plug The screw hole 621 and the orifice 622 of the plug 62 extend from the outer surface along the direction parallel to the second axis Y and turn to communicate with the second chamber 502 , and the throttle valve 63 is along the direction of the second axis Y screwed to the second plug 62 . In this way, a hand tool (not shown) can be inserted through an opening 911 on the side of the pivot seat 91, and the screw depth of the throttle valve 63 and the second plug 62 can also be adjusted, so as to scale and the throttle The hole between the holes 622 can be adjusted to adjust the closing speed.

And the elastic return element 33 is not limited to be disposed between the shaft bolt 73 and the pressure accumulating sleeve 32. In other variations of this embodiment, as shown in FIG. 36, the shaft bolt 73 in FIG. The elastic return element 33 is pressed between the pressure accumulating sleeve 32 and the shaft sleeve 43 . Therefore, the shaft sleeve 43 also has a pressure regulating nut portion 434 . The pressure regulating nut portion 434 is screwed to the pivot seat 91 along the first axis X direction. When the screwing depth of the pressure regulating nut portion 434 and the pivot seat 91 is adjusted by a hand tool (not shown), the shaft sleeve 43 can be displaced relative to the pivot seat 91, and the pressure accumulating sleeve 32 can be scaled with respect to the pivot seat 91. The distance L of the shaft sleeve 43 changes the compressed amount of the elastic return element 33 and achieves the purpose of adjusting the restoring force.

It should be noted that the plug 67 of the throttle unit 6 in these embodiments is not limited to only fix the second plug 62 and the inner tube 41 and the outer tube 42, and there are other variations in the embodiments. 37 , the second elastic element 66 can also be abutted against. At this time, the plug 67 has an end surface 671 facing the plug recess 625 and located in the orifice 622 . Therefore, the advantage of this modification is that, when processing the second plug 62, only one hole needs to be machined along the direction perpendicular to the first axis X, and the hole can be distinguished when the bolt 67 is inserted into the hole. In order to accommodate the plug recess 625 of the second valve member 65 and the second elastic element 66, and the plug hole 626 of the bolt 67, the bolt 67 can also abut against the second end face 671. The elastic element 66 further improves the convenience of assembly and reduces the production cost.

In addition, because the plug recess 625 communicates with the orifice 622 , when the first leaf 21 of FIG. 2 swings at an angle of 30 to 85 degrees instantaneously, the second valve 65 is opened. When the second through hole 414 is used, the fluid can quickly pass through the orifice 622 from the plug recess 625 , so as to maintain the pressure balance between the inner cavity 401 and the outer cavity 402 .

Through the above description, the advantages of the foregoing embodiments can be summarized as follows:

1. The present invention uses a special oil circuit design to match the setting of the high points 453 and the low points 454 of the unit 7, because the curved surface 451 has unequal slope slopes and changes to meet the requirements. The buffering effect of the door is not only simplified in structure, no direction restrictions on installation, no direction restrictions on opening doors, but also can reduce the length, and it is suitable for connecting different types of door frames and door hinges, or for clamping glass doors. device.

2. The present invention only needs to adjust the length ratio of the first pipe section 411 of the inner pipe 41 and the second pipe section 412 along the first axis X direction, so as to change the non-resistance door closing angle, and then adjust the first sheet 21 Or the angle range within which the second sheet 22 has a buffering effect when the door is closed.

3. In addition, the present invention can also adjust the screwing depth of the throttle valve 63 and the screw hole 621 of the second plug 62, change the flow rate of the fluid passing through, and then control the closing speed of the door leaf, and adjust the pressure regulating bolt 34 and the screw. The screwing depth of the inner sleeve 31 changes the compressed amount of the elastic return element 33 to reduce the pressure accumulation torque value, and then adjusts the return torsion force of the elastic return element 33 , so that the shaft bolt 73 can be slid The mechanical sliding resistance at the slope of the unequal height curved surface 451 achieves the function of adjustable closing speed.

4. Importantly, in the present invention, the third flow path can be opened only after the buffer member 51 passes through the pressure release starting position, so that the fluid can flow freely between the first chamber 501 and the second chamber 502. Therefore, all the buffering force disappears, so that the door leaf can smoothly close to 0 degrees with less buffering force, and even when there is air pressure or wind in the room, the door leaf can be slowly and smoothly. close.

5. The pipe unit 4, the buffer unit 5, the throttling unit 6 and the shaft unit 7 can be assembled into a single unit for providing buffer force. Therefore, it is suitable for any other objects that need to provide buffer force, and is suitable for a similar range. Broadly and importantly, the present invention can make oiling easier and improve the quality of oiling through a special assembly method.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

2: Sheet unit 20: Pipes 21: The first sheet 211: inner surface 212: Plane segment 213: outer surface 214: splint 215: meat thick 22: Second page 221: inner surface 222: Channel 223: outer surface 224: splint 225: meat thick 23: splint 231: jack 24: splint 25: Wasser 3: accumulator unit 31: Inner sleeve 32: Accumulator Kit 321: Rotary part 322: Limiting part 323: limit hole 324: Socket 33: Elastic return element 331: First End 332: Second End 34: Pressure regulating bolt 35: Auxiliary elastic element 4: Pipe fitting unit 401: Lumen 402: External cavity 41: Inner tube 411: First Pipe Section 412: Second Pipe Section 413: First Piercing 414: Second Perforation 415: First inner groove 416: Second inner groove 42: Outer tube 43: Shaft Kit 431: Plane 432: Open End 433: Involute groove 434: Pressure regulating nut part 44: Outer sleeve 45: inner bushing 451: Surface 452: bump 453: high point 454: low 5: Buffer unit 501: First Chamber 502: Second Chamber 51: Buffer 510: Channel 511: Buffer groove 512: Buffer Alcove 513: First runner 52: The first valve 53: The first elastic element 54: C-shaped buckle 6: Throttle unit 61: The first plug 611: Shaft hole 62: Second plug 621: screw hole 622: Orifice 623: Second runner 624: Plug groove 625: Plug Alcove 626: Bolt hole 63: Throttle valve 631: Screw part 632: Throttle Department 64: Gas tight gasket 65: Second valve piece 66: Second elastic element 67: Bolt 671: End face 7: Shaft unit 71: The first shaft 72: Second shaft 73: Shaft bolt 74: Gasket 8: Cabinets 81: Cabinet 82: Cabinet door 9: Link Unit 91: Pivot seat 910: accommodating space 911: Opening 92: Spindle 921: Release Face 922: Pressing Surface 93: Plate Set X: the first axis Y: the second axis L: Spacing D1: inner diameter D2: inner diameter

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a top view illustrating a first embodiment of two objects connected to the hydraulic shock absorber of the present invention; 2 is an exploded perspective view of the first embodiment; 3 is an exploded perspective view of a pressure accumulator unit in the first embodiment; 4 is an exploded perspective view of a pipe unit, a buffer unit, a throttle unit and a shaft unit in the first embodiment; FIG. 5 is an incomplete cross-sectional view of the throttle unit in the first embodiment; Fig. 6 is a sectional view of the incomplete throttle unit of Fig. 5 assembled in an inner pipe; Fig. 7 is a cross-sectional view of the inner pipe of Fig. 6 combined with the incomplete throttle unit in an outer pipe; 8 is a cross-sectional view of the shaft unit assembled to a buffer member in the first embodiment; Fig. 9 is a sectional view of the shaft unit of Fig. 8 and the buffer member assembled to the outer pipe of Fig. 7; Figure 10 is a cross-sectional view of the first embodiment of a first plug assembled to the outer tube of Figure 9; 11 is a combined perspective view illustrating a shaft bolt combined with a first shaft member in the first embodiment; Fig. 12 is a sectional view of Fig. 11; Figure 13 is a cross-sectional view illustrating a buffer member in a pressure accumulating position in the first embodiment; Fig. 14 is a sectional view similar to Fig. 13, but the buffer is in a pressure release starting position; FIG. 15 is a cross-sectional view taken along the line XV-XV in FIG. 1, illustrating that the buffer member is in a pressure release end position in the first embodiment; 16 is an exploded perspective view illustrating another aspect of a sheet unit in the first embodiment; Fig. 17 is a perspective view illustrating that the leaf unit of Fig. 16 is suitable for connecting a door frame and clamping a door leaf made of glass; Figure 18 is a partial cross-sectional view of the aspect of Figure 16; Figure 19 is a perspective view similar to Figure 17, but with a second leaf extending along a first axis; Figure 20 is an exploded perspective view similar to Figure 16, but the second sheet also has two plywood; Fig. 21 is a perspective view similar to Fig. 17, but with a first sheet and the second sheet suitable for clamping glass objects; Figure 22 is an exploded perspective view similar to Figure 16, but with the first leaf adapted to attach to the door frame; Figure 23 is a perspective view similar to Figure 17, but the second leaf is suitable for clamping glass doors; Fig. 24 is a partial cross-sectional view similar to Fig. 18, but the second sheet is suitable for a door leaf made of interlocking glass; Figure 25 is a perspective view similar to Figure 23, but with the first sheet extending in the direction of the first axis; Figure 26 is an exploded perspective view similar to Figure 22, but the first sheet also has two plywood; Fig. 27 is a perspective view similar to Fig. 25, but the first sheet and the second sheet are suitable for clamping glass objects; Figure 28 is a front view illustrating a second embodiment of the hydraulic buffer device of the present invention installed in a cabinet; Figure 29 is an exploded perspective view of the second embodiment; Figure 30 is a cross-sectional view of the second embodiment; 31 is an exploded perspective view illustrating a third embodiment of the hydraulic buffer device of the present invention; Figure 32 is a perspective view of the third embodiment; Figure 33 is a cross-sectional view of the third embodiment; Figure 34 is a cross-sectional view illustrating a pressure accumulating member being forced by a pressing surface of a rotating shaft in the third embodiment; Fig. 35 is a sectional view similar to Fig. 33, but the throttle valve is screwed to a second plug member along a second axis direction; Figure 36 is a sectional view similar to Figure 33, but with an elastic return element forced between the pressure accumulating member and the shaft member; and Fig. 37 is a sectional view similar to Fig. 7, illustrating a variation of the throttle unit.

4: Pipe fitting unit

401: Lumen

402: External cavity

41: Inner tube

411: First Pipe Section

412: Second Pipe Section

42: Outer tube

43: Shaft Kit

432: Open End

45: inner bushing

451: Surface

453: high point

454: low

5: Buffer unit

501: First Chamber

502: Second Chamber

51: Buffer

512: Buffer Alcove

52: The first valve

53: The first elastic element

54: C-shaped buckle

6: Throttle unit

61: The first plug

611: Shaft hole

62: Second plug

621: screw hole

622: Orifice

626: Bolt hole

63: Throttle valve

65: Second valve piece

66: Second elastic element

67: Bolt

7: Shaft unit

71: The first shaft

72: Second shaft

73: Shaft bolt

74: Gasket

X: the first axis

Claims (22)

A hydraulic buffer device, comprising: a pipe unit extending along a first axis direction and defining an inner cavity and an outer cavity suitable for accommodating fluid; A buffer unit is displaceably inserted in the inner cavity along the direction of the first axis, and partitions the inner cavity to form a first cavity and a second cavity communicating with the outer cavity, and the pipe unit defining a first flow path that can be blocked and allows one-way flow of fluid from the second chamber to the first chamber; A throttling unit is connected to the pipe unit and closes the inner cavity and the outer cavity, and defines a second flow path with the pipe unit that allows fluid to flow bidirectionally between the second cavity and the outer cavity, and allows a third flow path for the fluid to flow from the first chamber to the second chamber in one direction through the outer chamber; and A shaft unit, connected to the buffer unit, can be operably linked to the buffer unit to displace in the direction of the first axis, and when the buffer unit is linked to be displaced in a direction opposite to the direction of the second chamber, it compresses the inside of the first chamber The fluid enters the second chamber through the second flow path and the third flow path. When the buffer unit is linked to displace in the direction opposite to the first chamber, the fluid in the second chamber is first compressed and sent out by the The second flow path enters the first chamber, and after the first flow path is opened, the fluid compressed in the second chamber enters the first chamber through the first flow path and the second flow path. The hydraulic buffer device of claim 1, wherein the pipe unit includes an inner tube defining the inner cavity, an outer tube surrounding the inner tube and defining the outer cavity with the inner tube, and surrounding the outer tube One-axis kit for tubes. The hydraulic buffer device according to claim 2, wherein the shaft unit includes a first shaft member connected to the buffer unit, the buffer unit includes a first shaft member that is displaceably penetrated in the inner cavity and connected to the first shaft member A buffer member, the first flow path is defined between the buffer member and the inner tube, and is displaced between a pressure accumulation position and a pressure release termination position relative to the inner tube, in the pressure accumulation position, the buffer member The first flow path is blocked, and at the pressure release termination position, the buffer unit opens the first flow path. The hydraulic buffer device of claim 3, wherein the throttle unit, the inner tube, the outer tube define the second flow path and the third flow path, and the buffer member is opposite to the second chamber When the direction of the displacement starts from the release end position, the fluid compressed in the first chamber enters the second chamber through the second flow path and the third flow path, and the buffer element is opposite to the first chamber When the direction of the displacement starts from the pressure accumulating position, the fluid compressed in the second chamber enters the first chamber through the second flow path. The hydraulic buffer device according to claim 4, wherein the buffer unit further comprises a first valve member and a first elastic element, and the buffer member is further displaced to be located between the pressure accumulation position and the pressure release termination position a pressure release starting position, and has a buffer groove formed on an outer peripheral surface and extending along the direction of the first axis, a buffer recess formed on a surface facing the second chamber, and communicated with the buffer The groove and a first flow channel of the buffer cavity, the first valve member is arranged in the buffer cavity and can be opened to close the first flow channel, the first elastic element presses against the first valve member and the joint Between the flow units, a biasing force that makes the first valve member close the first flow channel is constantly generated, and when the buffer member passes through the pressure release starting position and moves toward the pressure releasing end position, it compresses the pressure inside the second chamber. Fluid enters the first chamber from the first flow path and the second flow path simultaneously. The hydraulic buffer device according to claim 5, wherein the inner pipe has a first pipe section and a second pipe section extending in opposite directions along the first axis direction, and the inner diameter of the second pipe section is larger than that of the first pipe section Inner diameter, when the buffer is located at the pressure accumulation position, the buffer is adjacent to the first pipe section, and is in airtight contact with the first pipe section, when the buffer is located at the pressure release start position and the pressure release end position When the buffer element is adjacent to the second pipe section, a channel for fluid to pass through is defined between the buffer groove and the second pipe section, and the channel and the first flow channel constitute the first flow path. The hydraulic buffer device according to claim 5, wherein the throttling unit comprises a first plug connected to one end of the outer tube and forcing against one end of the inner tube, and a first plug connected to the other end of the outer tube and forcing against the inner tube A second plug at the other end of the inner tube, the first plug has a shaft hole extending from one end face to the other end face along the first axis direction and for the shaft unit to pass through. The hydraulic buffer device of claim 7, wherein the inner tube has a first through hole communicating with the outer cavity and the second cavity, and is formed on an outer surface and communicated with the outer cavity through the first through hole A first inner groove of the cavity and the second cavity, the throttle unit further includes a throttle valve, and an airtight gasket disposed between the throttle valve and the second plug, the second plug has Extending from an outer surface to a screw hole and a throttle hole communicated with the second chamber, and a second flow channel communicated with the throttle hole and the first through hole, the throttle hole has a diameter from adjacent to the One end of the second chamber increases from small to large toward the other end away from the second chamber, the throttle valve has a screwing portion screwed into the screw hole, and is displaceably inserted in the throttle hole And the diameter of the throttling portion increases from small to large from one end adjacent to the second chamber to the other end away from the second chamber. The orifice, the second flow channel, the first through hole and the first inner groove constitute the second flow path. The hydraulic buffer device according to claim 8, wherein the inner tube has a second through hole communicating with the outer cavity and the second cavity, and is formed on the outer surface and communicated with the outer cavity through the second through hole cavity and a second inner groove of the second chamber, the throttle unit further includes a second valve member, and a second elastic element, and the second plug member also has a peripheral surface formed on an outer surface and directed from A plug groove extending along the first axis direction on one end surface of the second chamber, and a plug recess formed on the outer peripheral surface and facing the second through hole, the second valve member is disposed in the plug The second through hole is openably closed in the cavity of the plug, and the second elastic element is forced between the cavity of the plug and the second valve member, constantly generating a bias for the second valve member to close the second through hole. pressure, the second through hole, the second inner groove and the plug groove constitute the third flow path. The hydraulic buffer device according to claim 8, wherein the screw hole and the throttle hole of the second plug extend from the outer surface along the first axis direction to communicate with the second chamber, and the throttle valve It is screwed to the second plug along the first axis direction. The hydraulic buffer device according to claim 3, wherein the pipe unit further comprises an inner bush, the shaft sleeve has an open end, the inner sleeve is penetrated in the shaft sleeve and adjacent to the open end, and has a curved surface, the curved surface has two high points, and two low points that form a disparity with the iso-high points along the first axis direction and are spaced apart from the iso-high points, the shaft unit further includes an axis perpendicular to the first axis A shaft bolt whose axial direction passes through the first shaft member and slides on the curved surface, when the shaft bolt moves from the low points to the high points, the buffer unit is displaced against the direction of the second chamber, And the fluid compressed in the first chamber enters the second chamber through the outer chamber, when the shaft bolt moves from the high point to the low point, the buffer unit reverses the direction of the first chamber Displacement, and compress the fluid in the second chamber into the first chamber through the outer chamber, when the buffer is at the pressure accumulation position, the shaft bolt contacts the iso-high point, when the buffer is at the release When the compression end position is reached, the pin contacts the low points. The hydraulic buffer device according to claim 11, further comprising a pressure accumulating unit, the pressure accumulating unit comprising a pressure accumulating sleeve, and an elastic return element forcing between the pressure accumulating sleeve and the shaft unit, the shaft unit It rotates synchronously with the pressure accumulating set. When the high point of the shaft set contacts the shaft bolt, the shaft bolt links the buffer unit to the pressure accumulating position, and compresses the elastic return element to drive the pressure accumulating set to reverse. The return torque of the shaft bolt is contacted to the low point of the shaft assembly toward the rotation. The hydraulic buffer device according to claim 12, further comprising a blade unit, the blade unit comprising a first blade and a second blade that are pivotally connected to each other and can be operated and rotated, the first blade and the The second sheet defines a pipe extending along the first axis, the pressure accumulating unit and the pipe unit are inserted into the pipe along the first axis direction, and the pressure accumulating sleeve is synchronized with the second sheet Rotating, the pipe unit rotates synchronously with the first blade, when the first blade or the second blade is operated and rotated until the high point of the shaft set contacts the shaft bolt, the shaft bolt is linked with the buffer unit Being in the pressure accumulating position and compressing the elastic return element generates a restoring torque for driving the first blade or the second blade to reversely rotate until the low point of the shaft set contacts the shaft bolt. The hydraulic buffer device as claimed in claim 13, wherein the second sheet has an inner surface surrounding the pipe, and two channels oppositely formed on the inner surface, and the pressure accumulating unit further comprises a pressure accumulating unit pierced through the pipe. An inner sleeve in the pipeline and connected to the first sheet, and a pressure regulating bolt screwed through the inner sleeve along the first axis direction, the pressure accumulating sleeve has a rotatable penetration through the inner sleeve A rotating portion inside and pressing against the elastic return element, and two limiting portions extending from the rotating portion along the first axis direction and passing through the channels, the limiting portions and the pipe unit The pressure regulating bolt is forced against the rotating part at a scalable distance, and through the change of the screwing depth, the pressure accumulating sleeve is forced to displace relative to the pipe fitting unit. The hydraulic buffer device according to claim 13, wherein one of the first sheet and the second sheet further has two plywoods extending away from the first axis from an outer surface and spaced apart by a distance , the clamping plates are suitable for clamping an object, so that the object can rotate relative to the first sheet and the second sheet. The hydraulic buffer device of claim 12, further comprising a leaf unit adapted to be installed in a cabinet, the cabinet comprising a cabinet body, and a cabinet door, the leaf unit comprising two plywoods for clamping the cabinet door , wherein a splint has a non-circular socket formed on a bottom surface, the pressure accumulating unit also includes an inner sleeve, and the pressure accumulating sleeve has a rotatable penetration in the inner sleeve and is forced against the inner sleeve. A rotating portion of the elastic return element, and a plug portion extending from the rotating portion along the first axis direction and inserted into the socket, the pipe unit also includes an outer sleeve embedded in the cabinet body , the outer sleeve is for the pressure accumulating unit, the buffer unit, the throttling unit and the shaft unit to pass through along the first axis, and restrict the rotation of the shaft sleeve. The hydraulic buffer device according to claim 13 or 16, wherein the rotating part of the pressure accumulating sleeve defines a limit hole extending along the first axis direction, and the shaft unit is displaceably penetrated through the pressure accumulating sleeve in the limit hole. The hydraulic buffer device according to claim 17, wherein the pressure accumulating unit further comprises a pressure regulating bolt and the pressure accumulating sleeve along the first axis direction, and a part of which is penetrated in the limiting hole. An auxiliary elastic element, the shaft unit includes a second shaft member connected to the first shaft member and extending along the first axis direction, and a washer, the second shaft member is forced against the auxiliary elastic member, and is subject to The elastic force of the auxiliary elastic element keeps the displacement opposite to the direction of the pressure accumulating sleeve. The washer is fixed between the first shaft member and the second shaft member and is forced against the elastic return element. The hydraulic buffer device according to claim 8, further comprising a link unit and a pressure accumulating unit, the link unit comprising a pivot seat, a rotating shaft rotatably passing through the pivot seat, and a rotating shaft synchronously rotating with the rotating shaft a blade set, the pivot seat defines a receiving space extending along the first axis direction, the rotating shaft extends along a second axis direction intersecting the first axis, and has an outer surface formed adjacent to the first axis A release surface of two axes, and a pressing surface formed on the outer surface and away from the second axis, the blade set is suitable for clamping an object, the pipe unit, the buffer unit, the throttle unit, the shaft The unit and the pressure accumulating unit are installed in the accommodating space, and the pressure accumulating unit is located between the shaft sleeve and the rotating shaft, and includes a pressure accumulating sleeve contacting the rotating shaft and connected to the first shaft member, and pressing against An elastic return element between the pressure accumulating set and the shaft set, when the leaf set is operated to rotate, and drives the rotating shaft to rotate to contact the pressure accumulating set with the pressing surface, the pressure accumulating set presses Pressing the first shaft member drives the buffer unit to displace against the direction of the first chamber, and compresses the fluid in the second chamber to enter the first chamber through the outer chamber, and compresses the elastic return element to restore When the plate set is released, the pressure accumulating sleeve is acted by the restoring force of the elastic return element, and the first shaft is linked to drive the buffer unit to displace in the direction opposite to the second chamber, and compress the The fluid in the first chamber enters the second chamber through the outer chamber and contacts the release surface of the rotating shaft. The hydraulic buffer device according to claim 19, wherein the shaft unit further comprises a shaft bolt passing through the first shaft member in a direction perpendicular to the first axis and located between the shaft sleeve and the pressure accumulating sleeve, the elastic The return element is forced between the pressure accumulating sleeve and the shaft bolt. The hydraulic buffer device according to claim 19, wherein the shaft sleeve further has a pressure regulating nut part, and the pressure regulating nut part is screwed to the pivot seat along the first axis direction, and passes through the screwing depth. change, so that the shaft assembly is displaced relative to the pressure accumulator assembly. The hydraulic buffer device according to claim 19, wherein the screw hole and the throttle hole of the second plug extend from the outer surface along the second axis direction and turn to communicate with the second chamber, and the joint The flow valve is screwed to the second plug along the second axis direction.

Images