Controllable hydraulic damper

Abstract

The utility model discloses and provides a controllable hydraulic resistance device which comprises a cylinder barrel, a floating piston is embedded in the cylinder barrel and divides the cylinder barrel into a high-pressure air cavity and a pressure oil cavity, an air valve is embedded in the pressure oil cavity, a valve element is embedded in the inner side of the air valve, a first oil passing hole is formed in the middle of the air valve, and a second oil passing hole is formed in the middle of the air valve. A second oil passing hole is formed in the side face of the air valve, a hollow rod is embedded in one end of the cylinder barrel, an adjusting assembly is embedded in the end, close to the valve element, of the hollow rod, the adjusting assembly abuts against the valve element, an ejector rod and a starting rod are embedded in the hollow rod, one end of the ejector rod abuts against the adjusting assembly, and the other end of the ejector rod abuts against the starting rod. And the other end of the spring abuts against the starting rod. By means of the adjusting assembly, connection and disconnection of an internal oil way can be changed by pressing the starting rod every time, adjustment can be achieved without pressing the starting rod all the time, operation is more convenient, and adjustment is simpler.

Description

Technical Field

[0001] The present disclosure relates to the technical field of resistors, and in particular to a controllable hydraulic resistor. Background Art

[0002] A resistor, as the name implies, is a device or apparatus used to generate resistance. It is widely used in various fields. For example, in adjustable seats, a resistor provides resistance to the seat back, keeping it at a specific angle. Currently, seat back adjustment requires pressing a switch, turning off the resistor, and then adjusting the angle. Once the adjustment is complete, releasing the switch and turning on the resistor to fix the angle is inconvenient, requiring the switch to be held down continuously. Utility Model Content

[0003] The present disclosure provides a controllable hydraulic resistor to solve one of the technical problems recognized by the inventors.

[0004] The present disclosure provides a controllable hydraulic resistor, including a cylinder, a floating piston embedded in the interior of the cylinder, the floating piston dividing the cylinder into a high-pressure air chamber and a pressure oil chamber, an air valve embedded in the pressure oil chamber, a valve core embedded in the inner side of the air valve, a first oil hole opened in the middle of the air valve, a second oil hole opened on the side of the air valve, the first oil hole and the second oil hole being through-connected, a hollow rod embedded in one end of the cylinder, the end of the hollow rod located in the pressure oil chamber is embedded in the air valve, an adjusting component is embedded in the interior of the end of the hollow rod close to the valve core, the adjusting component is arranged to abut against the valve core, a push rod and a starting rod are embedded in the hollow rod, one end of the push rod is arranged to abut against the adjusting component, and the other end is arranged to abut against the starting rod, and one end of the starting rod passes through the hollow rod.

[0005] Preferably, the adjustment component includes a rotating cap, a central axis and a U-shaped part, the rotating cap is provided with a first slot and a second slot at one end close to the central axis, there are two first slots and two second slots, the first slots and the second slots are spaced apart from each other, the first slots and the second slots are transitioned through an inclined surface, one end of the central axis is arranged to abut against the middle part of the rotating cap, the other end of the central axis is arranged to abut against the top rod, a plurality of top blocks are provided in the middle part of the central axis, the top blocks are transitioned through an inclined surface, the U-shaped part is sleeved on the outside of the central axis, and support blocks are respectively provided on opposite sides of the U-shaped part, and the top end of the support block is embedded in the first slot or the second slot.

[0006] Preferably, the height difference between the first card slot and the second card slot is 1-2 mm.

[0007] Preferably, the valve core includes an integrally formed lifting section, an oil inlet section and a sealing section, the lifting section and the sealing section are connected to the first oil hole by interference fit, and the diameter of the oil inlet section is smaller than that of the sealing section and the lifting section.

[0008] Preferably, a chamfer is provided at the connection between the lifting section and the oil inlet section.

[0009] Preferably, an end cover of the cylinder barrel close to the high-pressure air chamber is provided with a rear blocking piece, and the rear blocking piece is provided with an inflation hole.

[0010] Preferably, a guide sleeve is embedded in the inner side of the cylinder, and the guide sleeve is clearance-fitted with the hollow rod.

[0011] Preferably, a first sealing ring is provided on the inner side of the cylinder, and the first sealing ring is arranged to abut against the guide sleeve.

[0012] Preferably, a second sealing ring is provided on the outer side of the air valve, and a third sealing ring is provided between the hollow rod and the valve core.

[0013] Preferably, a fourth sealing ring is provided on the outer side of the floating piston.

[0014] The beneficial effects of the present disclosure are mainly that: the present invention can change the on-off state of the internal oil circuit by pressing the start lever each time through the adjustment component, and the adjustment can be achieved without pressing it continuously, which makes the operation more convenient and the adjustment simpler.

[0015] It should be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily limiting of the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. Together, the description and the drawings serve to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a resistor according to an embodiment of the present disclosure;

[0018] Figure 2 An exploded diagram of the resistor structure according to an embodiment of the present disclosure;

[0019] Figure 3 is a cross-sectional view of a resistor according to an embodiment of the present disclosure;

[0020] Figure 4 This is a schematic diagram of the valve core structure of an embodiment of the present disclosure;

[0021] Figure 5 This is a schematic diagram of the structure of the adjustment component of an embodiment of the present disclosure;

[0022] Figure 6 An exploded view of an adjustment component according to an embodiment of the present disclosure;

[0023] Icons: 1-cylinder; 101-high-pressure air chamber; 102-pressure oil chamber; 2-hollow rod; 3-air valve; 301-first oil hole; 302-second oil hole; 4-valve core; 41-lifting section; 42-oil inlet section; 43-sealing section; 5-adjusting assembly; 51-rotating cap; 511-first slot; 512-second slot; 52-central shaft; 521-lift block; 53-U-shaped part; 531-support block; 6-floating piston; 7-lift rod; 8-starting rod; 9-guide sleeve; 10-first sealing ring; 11-rear blocking piece; 111-inflating hole; 12-second sealing ring; 13-third sealing ring. DETAILED DESCRIPTION

[0024] The technical solutions of the present disclosure will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0025] Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present disclosure.

[0026] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this disclosure and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0028] Example

[0029] like Figure 1-6 As shown, this embodiment provides a controllable hydraulic resistor, including a cylinder 1, which is a circular tubular structure. A floating piston 6 is embedded inside the cylinder 1. The floating piston 6 divides the interior of the cylinder 1 into a high-pressure air chamber 101 and a pressure oil chamber 102. High-pressure nitrogen is injected into the high-pressure air chamber 101, and pressure oil is added to the pressure oil chamber 102. An air valve 3 is embedded in the pressure oil chamber 102. A first oil hole 301 is provided through the middle of the air valve 3, and a second oil hole 301 is provided on the side of the air valve 3 and is connected to the first oil hole 301. 2, a valve core 4 is embedded in the first oil hole 301, a hollow rod 2 is embedded at one end of the cylinder 1, and the end of the hollow rod 2 located in the pressure oil chamber 102 is embedded in the air valve 3, and an adjusting component 5 is embedded at one end of the hollow rod 2 close to the pressure oil chamber 102, and one end of the adjusting component 5 is set to abut against the valve core 4, and a push rod 7 and a starting rod 8 are embedded in the hollow rod 2, one end of the push rod 7 is set to abut against the adjusting component 5, and the other end is set to abut against the starting rod 8, and one end of the starting rod 8 passes through the hollow rod 2.

[0030] Specifically, the adjustment component 5 includes a rotating cap 51, a central axis 52 and a U-shaped part 53. The rotating cap 51 is provided with a first slot 511 and a second slot 512 at one end close to the central axis 52. There are two first slots 511 and second slots 512. The first slots 511 and the second slots 512 are spaced apart from each other. The first slots 511 and the second slots 512 are transitioned through an inclined surface. One end of the central axis 52 is arranged to abut against the middle part of the rotating cap 51, and the other end of the central axis 52 is arranged to abut against the push rod 7. A plurality of top blocks 521 are provided in the middle part of the central axis 52. The top blocks 521 are transitioned through an inclined surface. The U-shaped part 53 is sleeved on the outer side of the central axis 52. Support blocks 531 are respectively provided on opposite sides of the U-shaped part 53. The top of the support block 531 is embedded in the first slot 511 or the second slot 512.

[0031] When the spool 4 is released, the spool 4 is pushed back and the spool 4 is pushed back, so that the spool 4 is lifted up. The excessive inclined surface enters the second groove 512, and the supporting block 531 presses against the rotating cap 51 to stop it from moving. At this time, the distance moved by the rotating cap 51 is the height difference between the first groove 511 and the second groove 512. In this embodiment, the height difference between the first groove 511 and the second groove 512 is 1-2 mm, so that the valve core 4 is pushed up by 1-2 mm. At this time, the valve core 4 moves, allowing the pressure oil to pass through the first oil hole 301 and flow out from the second oil hole 302. At this time, the resistor has no resistance to the outside, and the chair back angle can be freely adjusted. After the adjustment is completed, press the starting rod 8 again. At this time, the rotating cap 51 is pushed up again. After releasing the starting rod 8, the rotating cap 51 rotates 90 degrees, causing the supporting block 531 to leave the second groove 512 and enter the first groove 511. At this time, the valve core 4 is pushed back to its original position by the pressure oil, blocking the air valve 3. The resistor generates resistance to the outside, fixing the chair back at a specified angle.

[0032] Specifically, the valve core 4 includes an integrally formed lifting section 41, an oil inlet section 42 and a sealing section 43. The lifting section 41 and the sealing section 43 are connected to the first oil hole 301 by interference fit, and the diameter of the oil inlet section 42 is smaller than that of the sealing section 43 and the lifting section 41. The lifting section 41, the oil inlet section 42 and the sealing section 43 are integrally formed at one time. The lifting section 41 and the sealing section 43 are connected with the first oil hole 301 by interference fit, which plays a sealing role for the valve core 4. When the valve core 4 is lifted 1-2 mm by the rotating cap 51, the lifting section 41 leaves the first oil hole 301, and the diameter of the oil inlet section 42 is smaller than the first oil hole 301, and it cannot be sealed. At this time, the pressure oil can enter the first oil hole 301 and then be discharged from the second oil hole 302. The valve core 4 is opened. At this time, the pressure oil can flow, and the hollow rod 2 can move in the cylinder 1. At this time, the resistor is in the closed state, and the chair back can be adjusted freely. Press the starting rod 8 again, and the pressure oil pushes the valve core 4 to move, causing the lifting section 41 to drop and block the first oil hole 301. At this time, the pressure of the pressure oil presses against the air valve 3, so that the hollow rod 2 cannot move, locking the chair back.

[0033] Furthermore, a chamfer is provided at the connection between the lifting section 41 and the oil inlet section 42. The chamfer design allows the lifting section 41 to be more easily inserted into the first oil hole 301 when pushed downward by the pressure oil, thereby avoiding misalignment.

[0034] Furthermore, a rear plugging piece 11 is provided at one end of the cylinder 1 near the high-pressure gas chamber 101. The rear plugging piece 11 is provided with a gas filling hole 111. The rear plugging piece 11 is used to seal one end of the cylinder 1. After high-pressure gas is injected through the gas filling hole 111, the gas filling hole 111 is blocked with a plug to prevent gas leakage.

[0035] A guide sleeve 9 is embedded in the inner side of the cylinder 1, and the guide sleeve 9 is clearance-fitted with the hollow rod 2. The guide sleeve 9 cooperates with the hollow rod 2 to guide the moving direction of the hollow rod 2 and avoid tilting during the movement.

[0036] Furthermore, a first sealing ring 10 is provided on the inner side of the cylinder 1, and the first sealing ring 10 is arranged against the guide sleeve 9. The first sealing ring 10 is used to seal between the hollow rod 2 and the cylinder 1 to avoid oil leakage and ensure the normal use of the resistor.

[0037] Furthermore, a second sealing ring 12 is provided on the outer side of the air valve 3 to ensure the sealing between the air valve 3 and the inner wall of the cylinder 1, thereby preventing high-pressure oil from leaking from the side of the air valve 3 and ensuring the effect of the resistor. A third sealing ring 13 is provided between the hollow rod 2 and the valve core 4. The third sealing ring 13 ensures the sealing between the hollow rod 2 and the valve core 4.

[0038] Furthermore, a fourth sealing ring is provided on the outer side of the floating piston 6. The fourth sealing ring ensures the sealing between the floating piston 6 and the inner wall of the cylinder 1, thereby preventing the high-pressure gas and the high-pressure oil from mixing.

[0039] The working principle of the present invention is as follows: when the resistor is in normal state, the support block 531 of the U-shaped part 53 is embedded in the first slot 511 of the rotating cap 51. At this time, the lifting section 41 of the valve core 4 is embedded in the first oil hole 301, blocking the first oil hole 301. At this time, the hollow rod 2 is unable to shrink into the cylinder 1 due to the pressure of the pressure oil, and generates resistance to the outside. When the cam 51 is released, the support block 531 of the U-shaped part 53 leaves the first groove 511. After the starting rod 8 is released, the cam 51 is pushed by the valve core 4 to move the cam 51 in the direction of the central axis 52. During the movement of the cam 51, the support block 531 passes through the first groove 511 and the second groove 512. The inclined surface of the degree enters the second groove 512, and the support block 531 presses against the rotating cap 51 to stop it from moving. At this time, the distance moved by the rotating cap 51 is the height difference between the first groove 511 and the second groove 512. In this embodiment, the height difference between the first groove 511 and the second groove 512 is 1-2 mm, so that the valve core 4 is pushed up by 1-2 mm. When the valve core 4 is pushed up by 1-2 mm, the lifting section 41 leaves the first oil hole 301, and the pressure oil enters from the first oil hole 301 and is discharged from the second oil hole 302. At this time, the valve core 4 can move, so that the hollow rod 2 can move. The hollow rod 2 is not affected by the resistance at this time, and the angle of the seat back can be adjusted. After the adjustment is completed, the starting rod 8 is pressed again. The pressure oil pushes the valve core 4 to move, causing the lifting section 41 to drop and block the first oil hole 301. At this time, the pressure of the pressure oil presses against the air valve 3, so that the hollow rod 2 cannot move, and the seat back is locked.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A controllable hydraulic resistor, characterized in that: include: A cylinder, wherein a floating piston is embedded in the interior of the cylinder, and the floating piston divides the cylinder into a high-pressure air chamber and a pressure oil chamber, an air valve is embedded in the pressure oil chamber, a valve core is embedded in the inner side of the air valve, a first oil hole is opened in the middle of the air valve, and a second oil hole is opened on the side of the air valve, the first oil hole is through-connected with the second oil hole, a hollow rod is embedded in one end of the cylinder, and the end of the hollow rod located in the pressure oil chamber is embedded in the air valve, and an adjusting component is embedded in the interior of the end of the hollow rod close to the valve core, the adjusting component is set to abut against the valve core, a push rod and a starting rod are embedded in the hollow rod, one end of the push rod is set to abut against the adjusting component, and the other end is set to abut against the starting rod, and one end of the starting rod passes through the hollow rod.

2. A controllable hydraulic resistor according to claim 1, characterized in that: The adjusting assembly includes a rotating cap, a central axis and a U-shaped part, the rotating cap is provided with a first slot and a second slot at one end close to the central axis, there are two first slots and two second slots, the first slot and the second slot are spaced apart from each other, the first slot and the second slot are transitioned through an inclined surface, one end of the central axis is set against the middle part of the rotating cap, the other end of the central axis is set against the push rod, a plurality of top blocks are set in the middle part of the central axis, the top blocks are transitioned through an inclined surface, the U-shaped part is sleeved on the outside of the central axis, and support blocks are respectively provided on the opposite sides of the U-shaped part, and the top of the support block is embedded in the first slot or the second slot.

3. A controllable hydraulic resistor according to claim 2, characterized in that: The height difference between the first card slot and the second card slot is 1-2 mm.

4. A controllable hydraulic resistor according to claim 1, characterized in that: The valve core includes an integrally formed lifting section, an oil inlet section and a sealing section. The lifting section and the sealing section are connected to the first oil hole by interference fit. The diameter of the oil inlet section is smaller than that of the sealing section and the lifting section.

5. A controllable hydraulic resistor according to claim 4, characterized in that: The connection between the lifting section and the oil inlet section is provided with a chamfer.

6. A controllable hydraulic resistor according to claim 1, characterized in that: An end cover of the cylinder barrel close to the high-pressure air chamber is provided with a rear blocking piece, and the rear blocking piece is provided with an inflation hole.

7. The controllable hydraulic resistor according to claim 1, characterized in that: A guide sleeve is embedded in the inner side of the cylinder, and the guide sleeve is clearance-matched with the hollow rod.

8. A controllable hydraulic resistor according to claim 7, characterized in that: The cylinder is provided with a first sealing ring on the inner side, and the first sealing ring is arranged to abut against the guide sleeve.

9. The controllable hydraulic resistor according to claim 1, characterized in that: A second sealing ring is sleeved on the outer side of the air valve, and a third sealing ring is arranged between the hollow rod and the valve core.

10. The controllable hydraulic resistor according to claim 1, characterized in that: A fourth sealing ring is sleeved on the outer side of the floating piston.

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