Rotation drive and hydraulic device

Abstract

The invention discloses a rotary driving piece and a hydraulic device, a through hole is formed in the axial end part of the rotary driving piece, the through hole penetrates through the rotary driving piece in the axial direction, a plurality of hollowed-out parts are arranged on the circumferential wall part of the rotary driving piece, and the plurality of hollowed-out parts are arranged at intervals in the circumferential direction of the circumferential wall part; the hollow part has a length direction on the surface of the circumferential wall part, and the length direction is obliquely arranged relative to the axial direction of the rotary driving part; when the rotary driving piece is pressed in the axial direction, the two axial ends of the rotary driving piece can be twisted relatively. The two axial ends of the rotary driving part can be relatively twisted when the rotary driving part is pressed in the axial direction, so that the rubber ring has the rotary driving function, and the use purpose of the rubber ring can be expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of driving components, and in particular to a rotary driving component and a hydraulic device. Background Art

[0002] As a kind of annular elastic body, rubber ring is usually made of rubber and other materials. However, the main function of rubber ring is to seal or cushion between two or more objects. Common applications include sealing containers, automobile structures and piping systems, etc. Its function is relatively simple and its use is relatively narrow. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a rotary drive member, which can achieve relative twisting of two ends when under pressure, thereby having a rotary drive function and expanding its use.

[0004] The present invention also aims to provide a hydraulic device to apply the above-mentioned rotary drive member.

[0005] According to the rotary driving member of the embodiment of the present invention, a through hole is provided on the axial end of the rotary driving member, and the through hole penetrates the rotary driving member in the axial direction. A plurality of hollow portions are provided on the circumferential wall portion of the rotary driving member, and the plurality of hollow portions are arranged at intervals along the circumferential direction of the circumferential wall portion. The hollow portions have a length direction on the surface of the circumferential wall portion, and the length direction is inclined relative to the axial direction of the rotary driving member; wherein, when the rotary driving member is subjected to axial pressure, the axial ends of the rotary driving member can be twisted relative to each other.

[0006] According to the rotary driving member of the embodiment of the present invention, a through hole is provided on the axial end of the rotary driving member, and a plurality of hollow portions are provided on the circumferential wall portion of the rotary driving member. The length direction of the hollow portions on the surface of the circumferential wall portion is inclined relative to the axial direction of the rotary driving member. When the rotary driving member is subjected to axial pressure, the axial ends of the rotary driving member can be twisted relative to each other, thereby enabling the rubber ring to have a rotary driving function and expanding its use.

[0007] In some embodiments, the hollow portion penetrates the circumferential wall portion in a radial direction of the rotary drive member to communicate with the through hole.

[0008] In some embodiments, the sum of the areas of the plurality of hollow portions is M, and the surface area of ​​the remaining region of the circumferential wall portion after removing the hollow portions is N, wherein 0.75≤M / N≤1.5.

[0009] In some embodiments, a setting line is made on the circumferential wall portion, which is parallel to the axial direction of the rotary drive member and tangent to the edge of the hollow portion, and the angle between the length direction of the hollow portion and the setting line is α, wherein 25 degrees ≤ α ≤ 75 degrees.

[0010] In some embodiments, along the length direction of the hollow portion, the width of the hollow portion gradually decreases from the middle to both ends.

[0011] In some embodiments, a torsion portion is formed between any two adjacent hollow portions on the circumferential wall portion, and the torsion portion has an outer end away from the through hole, and a groove is provided on the outer end. The groove has a groove bottom surface, and in the axial direction of the rotating drive member, the distance between the groove bottom surface and the hole wall surface of the through hole gradually increases.

[0012] In some embodiments, there are multiple grooves, and the multiple grooves are arranged in sequence along the length direction of the hollow portion.

[0013] In some embodiments, in the length direction of the hollow portion, adjacent edge lines of any two adjacent grooves overlap.

[0014] According to an embodiment of the present invention, the hydraulic device includes: a cylinder body, a working chamber is provided in the cylinder body, a liquid outlet and a compensation hole connected to the working chamber are provided on the cylinder body; a liquid replenishing cylinder, the liquid replenishing cylinder is connected to the compensation hole; a valve core, the valve core is provided in the working chamber, a sealing member is sleeved on the valve core, when the valve core moves along a set stroke in the working chamber, the sealing member slides through the compensation hole, and a rotating driving member is provided at the end of the valve core away from the liquid outlet, and the rotating driving member is the rotating driving member described above; a linkage rod, the linkage rod is passed through the cylinder body and the through hole, and is connected to the valve core, wherein when the linkage rod drives the valve core to move, the rotating driving member can be pressurized and the valve core can be driven to rotate.

[0015] According to the hydraulic device of an embodiment of the present invention, a rotary drive member is provided to rotate the valve core, so that the wear generated between the seal and the compensation hole is evenly distributed on the surface of the circumferential outer contour of the seal, avoiding the wear generated when the seal passes through the compensation hole from being concentrated in the same position, thereby reducing the probability of the seal rupture, extending the service life of the seal, and helping to reduce maintenance costs.

[0016] In some embodiments, a torsion portion is formed between any two adjacent hollow portions on the circumferential wall portion, the torsion portion having an outer end away from the through hole, the outer end being provided with a groove, the groove having a groove bottom surface, and in the direction of the valve core toward the linkage rod, the distance between the groove bottom surface and the hole wall surface of the through hole gradually increases.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of a rotary drive member in an embodiment of the present invention;

[0020] Figure 2 is a side view of a rotary drive member in an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a hydraulic device in an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 A local enlarged schematic diagram of point A.

[0023] Reference numerals:

[0024] 100. Hydraulic device;

[0025] 10, cylinder body; 101, working chamber; 10a, liquid outlet; 10b, compensation hole; 10c, open mouth;

[0026] 20, valve core; 20a, mounting groove; 20b, cavity;

[0027] 30, rotary drive member; 30a, through hole; 30b, hollow portion; 30c, circumferential wall portion; 30d, torsion portion; 301, groove; 301a, groove bottom surface;

[0028] 40, stopper; 40a, through hole;

[0029] 50, linkage rod; 501, connecting rod portion; 502, protruding portion;

[0030] 60. Fluid replenishing cylinder; 70. Sealing element;

[0031] O1, length direction; O2, setting line. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it is to be understood that the terms “center”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0035] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Reference below Figure 1-Figure 2 The rotary driving member 30 according to the embodiment of the present invention is described.

[0038] like Figure 1 As shown, according to the rotary driving member 30 of the embodiment of the present invention, a through hole 30a is provided on the axial end of the rotary driving member 30, and the through hole 30a penetrates the rotary driving member 30 in the axial direction, and a plurality of hollow portions 30b are provided on the circumferential wall portion 30c of the rotary driving member 30, and the plurality of hollow portions 30b are arranged at intervals along the circumferential direction of the circumferential wall portion 30c, and the hollow portions 30b have a length direction O1 on the surface of the circumferential wall portion 30c, and the length direction O1 is inclined relative to the axial direction of the rotary driving member 30; wherein, when the rotary driving member 30 is subjected to axial pressure, the axial ends of the rotary driving member 30 can be twisted relative to each other.

[0039] The rotary drive member 30 may be made of rubber elastic material. The through hole 30a penetrates the rotary drive member 30 in the axial direction, so that the rotary drive member 30 is an annular structure, that is, the center is hollow, and the rotary drive member 30 is easily compressed.

[0040] When the rotary drive member 30 is subjected to axial pressure, since there are multiple hollow portions 30b in the circumferential wall portion 30c of the rotary drive member 30, the circumferential wall portion 30c will collapse toward the hollow portion 30b when the end wall of the rotary drive member 30 is subjected to axial pressure. At the same time, since the length direction O1 of the hollow portion 30b is inclined relative to the axial direction of the rotary drive member 30, a small displacement along the circumferential direction of the rotary drive member 30 will be generated during the collapse of the circumferential wall portion 30c toward the hollow portion 30b, and a collapse displacement will be formed at each hollow portion 30b. By accumulating the displacement at multiple hollow portions 30b, relative torsion can be generated at the two axial ends of the rotary drive member 30. When the rotary drive member 30 is set between two objects, the rotary drive member 30 can drive the two objects to rotate relative to each other.

[0041] The hollowed-out portion 30b may be provided on the circumferential wall portion 30c in the form of a hollowed-out groove, or may be provided on the circumferential wall portion 30c in the form of a hollowed-out hole.

[0042] According to the rotary driving member 30 of the embodiment of the present invention, a through hole 30a is provided on the axial end of the rotary driving member 30, and a plurality of hollow portions 30b are provided on the circumferential wall portion 30c of the rotary driving member 30. The hollow portions 30b are inclined relative to the axial direction of the rotary driving member 30 in the length direction O1 on the surface of the circumferential wall portion 30c. When the rotary driving member 30 is subjected to axial pressure, the axial ends of the rotary driving member 30 can be twisted relative to each other, thereby enabling the rubber ring to have a rotary driving function, thereby expanding its use.

[0043] In some embodiments, Figure 1 As shown, the hollow portion 30b penetrates the circumferential wall portion 30c in the radial direction of the rotary drive member 30 to communicate with the through hole 30a. That is to say, the hollow portion 30b digs through the circumferential wall portion 30c, the volume of the hollowed area is larger, and both radial ends of the circumferential wall portion 30c located in the rotary drive member 30 can collapse into the hollow portion 30b, and the collapse degree is greater, so the axial ends of the rotary drive member 30 are more likely to produce relative torsion.

[0044] In some embodiments, the sum of the areas of the plurality of hollow portions 30 b is M, and the surface area of ​​the remaining region of the circumferential wall portion 30 c after removing the hollow portions 30 b is N, wherein 0.75≤M / N≤1.5.

[0045] It can be understood that if the number of hollow portions 30b is small, the overall rigidity of the rotary drive member 30 is large, and it is more difficult for the two ends of the rotary drive member 30 to be relatively twisted. However, if the number of hollow portions 30b is too large, the rigidity of the rotary drive member 30 will be insufficient, and the rotary drive member 30 will be directly compressed in the axial direction when it is compressed, and relative twisting cannot be generated. Therefore, by setting the ratio of M / N within the range of 0.75 to 1.5, the rigidity of the rotary drive member 30 can be taken into account, and at the same time, it can be ensured that the two ends of the rotary drive member 30 are more likely to be relatively twisted when it is compressed in the axial direction.

[0046] For example, the ratio of M / N can be any value of 0.75, 0.80, 0.85, 0.90, 0.95, 1.00, 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50. Of course, this is just an example, and the ratio of M / N can also take other values ​​within the range of 0.75 to 1.5, which will not be repeated here.

[0047] In some embodiments, such as Figure 2 As shown, a setting line O2 is made on the circumferential wall portion 30c, which is parallel to the axial direction of the rotary drive member 30 and tangent to the edge of the hollow portion 30b. The angle between the length direction O1 of the hollow portion 30b and the setting line O2 is α, where 25 degrees ≤ α ≤ 75 degrees.

[0048] If the angle of α is relatively small, the component force that drives the rotary drive member 30 to twist when it is under pressure is relatively small, and it is difficult for the two axial ends of the rotary drive member 30 to twist relative to each other, and the axial size of the rotary drive member 30 will be relatively large, but the twisting angle will be relatively large; if the angle of α is relatively large, the component force that drives the rotary drive member 30 to twist when it is under pressure is relatively large, and it is easy for the two axial ends of the rotary drive member 30 to twist relative to each other, and the axial size of the rotary drive member 30 will be relatively small, but the twisting angle will be small. Therefore, considering the above two situations, by setting α in the range of 25 degrees to 75 degrees, so that α can be set in an appropriate range, it is relatively easy for the two axial ends of the rotary drive member 30 to twist, and it is ensured that the twisting angle and the axial size of the rotary drive member 30 are relatively appropriate.

[0049] Optionally, α can be any value of 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, and 75 degrees. Of course, this is just an example, and α can also take other values ​​within the range of 25 degrees to 75 degrees, which will not be repeated here.

[0050] In some embodiments, such as Figure 2 As shown, in the length direction O1 of the hollow portion 30b, the width of the hollow portion 30b gradually decreases from the middle to both ends.

[0051] By setting the hollow portion 30b to have a structure in which the width gradually decreases from the middle to the two ends, the middle of the hollow portion 30b is deformed first when the rotary drive member 30 is subjected to force, and then the two ends of the hollow portion 30b are deformed, making it easier for the rotary drive member 30 to be torsionally deformed. Secondly, by adopting the above scheme, the torsion deformation of the rotary drive member 30 is more complete, that is, the hollow portion 30b is completely closed without leaving a gap, avoiding the damage of the rotary drive member 30 caused by uneven force due to the inability of the hollow portion 30b to be completely closed, and reducing the risk of damage to the rotary drive member 30.

[0052] In some embodiments, such as Figure 1 and Figure 2 As shown, a torsion portion 30d is formed between any two adjacent hollow portions 30b on the circumferential wall portion 30c, and the torsion portion 30d has an outer end away from the through hole 30a, and a groove 301 is provided on the outer end. The groove 301 has a groove bottom surface 301a, and in the axial direction of the rotating drive member 30, the distance between the groove bottom surface 301a and the hole wall surface of the through hole 30a gradually increases.

[0053] By providing the groove 301 on the outer end of the torsion portion 30d of the rotary drive member 30, the structural strength of the torsion portion 30d can be reduced. When the rotary drive member 30 is subjected to axial pressure, the torsion portion 30d collapses into the groove 301, and the torsion portion 30d can be quickly twisted. Since the distance between the groove bottom surface 301a and the hole wall surface of the through hole 30a gradually increases in the axial direction of the rotary drive member 30, the groove 301 is constructed as a sawtooth hook groove. When the axial force on the rotary drive member 30 is removed, the torsion portion 30d collapses into the groove 301, so that the groove walls of the groove 301 are pressed and contacted with each other. Under the action of static friction, the groove 301 recovers at a relatively slow speed, that is, the rotary drive member 30 rebounds and resets relatively slowly, so that when the rotary drive member 30 drives two objects to rotate relative to each other, the rotary drive member 30 can present the effect of rapid compression and slow rebound.

[0054] In some embodiments, such as Figure 1 and Figure 2 As shown, there are multiple grooves 301, and the multiple grooves 301 are sequentially arranged along the length direction O1 of the hollowed-out portion 30b. Referring to the above, as the number of grooves 301 increases, the strength of the torsion portion 30d of the member is further weakened, and at the same time, when the torsion portion 30d is twisted, the friction force of the multiple grooves 301 can further slow down the rebound speed of the torsion portion 30d, that is, by increasing the number of grooves 301, the effect of rapid compression and slow rebound of the rotary drive member 30 can be improved.

[0055] For example, the number of the grooves 301 along the length direction O1 of the hollow portion 30b can be four. Of course, this is just an example, and the number of the grooves 301 can also be other values, which will not be repeated here.

[0056] In some embodiments, such as Figure 1 and Figure 2 As shown, in the length direction O1 of the hollow portion 30b, the adjacent edge lines of any two adjacent grooves 301 overlap. Under the premise that the length dimension of the torsion portion 30d is certain, by making the adjacent edge lines of any two adjacent grooves 301 overlap, the number of grooves 301 can be set to be relatively large, and the structural strength of the torsion portion 30d is relatively small. When the rotary drive member 30 is compressed in the axial direction, the torsion portion 30d is easy to twist.

[0057] like Figure 3 and Figure 4 As shown, the hydraulic device 100 according to the embodiment of the present invention includes: a cylinder body 10 , a fluid replenishing cylinder 60 , a valve core 20 , and a linkage rod 50 .

[0058] A working chamber 101 is provided in the cylinder body 10, and a liquid outlet 10a and a compensation hole 10b communicating with the working chamber 101 are provided on the cylinder body 10. The liquid replenishing cylinder 60 is connected with the compensation hole 10b. The valve core 20 is provided in the working chamber 101, and a sealing member 70 is sleeved on the valve core 20. When the valve core 20 moves along the set stroke in the working chamber 101, the sealing member 70 slides through the compensation hole 10b. A rotary drive member 30 is provided at one end of the valve core 20 away from the liquid outlet 10a, and the rotary drive member 30 is the rotary drive member 30 mentioned above. The linkage rod 50 is penetrated through the cylinder body 10 and the through hole 30a, and is connected to the valve core 20, wherein when the linkage rod 50 drives the valve core 20 to move, the rotary drive member 30 can be pressurized and the valve core 20 can be driven to rotate.

[0059] In the related art, in the existing hydraulic device, the valve core has a compensation hole for compensating the hydraulic oil in front of the working starting point. When the valve core is in the initial position, the inside of the cylinder is connected to the replenishing cylinder through the compensation hole. At this time, the compensation hole can replenish the brake fluid and relieve the pressure. When the valve core is pushed forward by the push rod, the seal on the valve core, which plays a sealing role, cuts off the connection between the hydraulic cylinder and the outside world after passing through the compensation hole, and the pressure can be built up in the cylinder. After the hydraulic device returns to its position, the valve core returns to the compensation hole again, and the cylinder is connected to the outside world again. During each reciprocating operation, the seal will be worn twice at the compensation hole. This wear is much greater than the wear when the seal slides against the smooth inner wall of the cylinder, which makes it easy for the seal to rupture locally.

[0060] As shown in FIG. 3 , in the hydraulic device 100 of the embodiment of the present invention, when the hydraulic device 100 is in a non-working state, the valve core 20 is located at the right end of the working chamber 101, and the right end of the rotary drive member 30 is in a state of being compressed under force. When the hydraulic device 100 is in a working state, the linkage rod 50 pushes the valve core 20 to move leftward in the working chamber 101, driving the oil in the working chamber 101 to flow out from the liquid outlet 10a, and driving the components connected to the liquid outlet 10a to move. During the process of the valve core 20 moving leftward in the working chamber 101, the axial pressure force on the right end of the rotary drive member 30 disappears, and the rotary drive member 30 returns to its initial state. Since there is no stop force on the right end of the rotary drive member 30, the valve core 20 will not rotate during the recovery of the rotary drive member 30, and the sealing member 70 on the valve core 20 will rub against the compensation hole 10b when passing through the compensation hole 10b.

[0061] When the linkage rod 50 is pulled back by force, the valve core 20 moves to the right in the working chamber 101. When the seal 70 is about to pass through the compensation hole 10b, the right end of the rotary drive member 30 stops at the cylinder body 10 or contacts with other stop parts. The rotary drive member 30 is compressed and its two axial ends can undergo relative twisting, thereby driving the seal 70 to rotate a certain angle when passing through the compensation hole 10b until the valve core 20 reaches the right end of the working chamber 101. When the valve core 20 performs the next reciprocating motion, similarly, the rotary drive member 30 can drive the valve core 20 to continue to rotate a certain angle in the same direction (for example, always clockwise or always counterclockwise), and so on... All circumferential parts of the seal 70 can contact the compensation hole 10b, so that the wear of the seal 70 occurs on its circumferential edge, avoiding the wear position from occurring at the same position of the seal 70, that is, the seal 70 changes from single-area wear to uniform wear in the entire area, and the wear is distributed over the circumferential area of ​​the seal 70, which can extend the service life of the seal 70.

[0062] The hydraulic device 100 can be applied to various fields requiring hydraulic devices, and is not limited here. For example, the hydraulic device 100 can be applied to a vehicle, and specifically, the hydraulic device 100 can be applied to a brake pedal or an accelerator pedal. In this case, the linkage rod 50 can be connected to the brake pedal or the accelerator pedal. When the driver steps on the pedal, the linkage rod 50 drives the valve core 20 to move to the left in the working chamber 101; when the driver releases the pedal, the valve core 20 moves to the right in the working chamber 101 under the action of the return spring of the pedal.

[0063] According to the hydraulic device 100 of the embodiment of the present invention, a rotary drive member 30 is provided to rotate the valve core 20, so that the wear generated between the seal 70 and the compensation hole 10b is evenly distributed on the surface of the circumferential outer contour of the seal 70, thereby avoiding the wear generated when the seal 70 passes through the compensation hole 10b from being concentrated in the same position, thereby reducing the probability of the seal 70 rupture, extending the service life of the seal 70, and helping to reduce maintenance costs.

[0064] In some embodiments, such as Figures 1 to 4 As shown, a torsion portion 30d is formed between any two adjacent hollow portions 30b on the circumferential wall portion 30c, and the torsion portion 30d has an outer end away from the through hole 30a, and a groove 301 is provided on the outer end. The groove 301 has a groove bottom surface 301a, and in the direction of the valve core 20 toward the linkage rod 50, the distance between the groove bottom surface 301a and the hole wall surface of the through hole 30a gradually increases.

[0065] Since the distance between the groove bottom surface 301a and the hole wall surface of the through hole 30a gradually increases in the axial direction of the rotary drive member 30, the groove 301 is configured as a sawtooth hook groove. Figure 3 In the direction from left to right, in this direction, since the distance between the bottom surface 301a of the groove and the wall surface of the through hole 30a gradually increases, when the linkage rod 50 drives the valve core 20 to move to the left, the axial force on the rotary drive member 30 is removed, and since the torsion portion 30d collapses into the groove 301, the groove walls of the groove 301 are squeezed and contacted with each other, and under the action of static friction, the groove 301 recovers at a relatively slow speed, that is, the rotary drive member 30 rebounds and resets relatively slowly, so that during the movement of the valve core 20 to the left, the rotary drive member 30 can show a slow rebound effect, and the valve core 20 will not rotate.

[0066] In some embodiments, a mounting groove 20 a is provided at one end of the valve core 20 close to the rotary drive member 30 , and a portion of the rotary drive member 30 is interference fit in the mounting groove 20 a .

[0067] On the one hand, the installation groove 20a can play an installation role, so that the rotary drive member 30 can be installed in the installation groove 20a, which is convenient for installing the rotary drive member 30. On the other hand, part of the rotary drive member 30 is interference-fitted in the installation groove 20a, that is, in the natural state, part of the rotary drive member 30 is interference-fitted in the installation groove 20a, and the other part extends out of the installation groove 20a. When the valve core 20 moves to the right, the rotary drive member 30 is completely compressed into the installation groove 20a. When the valve core 20 moves to the left, due to the friction between the circumferential wall portion 30c of the rotary drive member 30 and the installation groove 20a, the rebound of the rotary drive member 30 can also become relatively slow, thereby preventing the valve core 20 from rotating when it moves to the left.

[0068] In some embodiments, Figure 3 and Figure 4 As shown, an opening 10c is provided on the end of the cylinder body 10 close to the rotating driving member 30, and a detachable stopper 40 is provided in the opening 10c. The stopper 40 stops at the rotating driving member 30, and a through hole 40a is provided on the stopper 40, and the linkage rod 50 passes through the through hole 40a.

[0069] On the one hand, when the valve core 20 moves to the right, the rotary drive member 30 can stop against the stop member 40, so that the rotary drive member 30 is compressed to drive the valve core 20 to rotate until the valve core 20 contacts the stop member 40. On the other hand, the stop member 40 is detachable in the opening 10c, and when the stop member 40 is removed, it is convenient to remove the valve core 20 and the sealing member 70.

[0070] Optionally, the stopper 40 may be an annular anti-rotation retaining ring.

[0071] Optionally, the sealing member 70 may be a sealing ring or a leather cup.

[0072] In some embodiments, Figure 4 As shown, a cavity 20b connected to the mounting groove 20a is provided in the valve core 20, and the linkage rod 50 has a connecting rod portion 501 located in the working chamber 101, and part of the connecting rod portion 501 is arranged in the cavity 20b. A protrusion 502 is provided on the connecting rod portion 501, and the protrusion 502 is arranged on the side of the stop member 40 close to the cavity 20b.

[0073] The cavity 20b can play a limiting role and is used to install the connecting rod part 501, which plays the role of connecting the linkage rod 50 and the valve core 20. At the same time, since the connecting rod part 501 and the cavity 20b are in a stop rather than a connection relationship, the valve core 20 will not affect the linkage rod 50 when it rotates under the drive of the rotating drive member 30.

[0074] Other structures and operations of the hydraulic device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0075] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rotary drive member, characterized in that: A through hole is provided on the axial end of the rotary drive member, and the through hole penetrates the rotary drive member in the axial direction. A plurality of hollow portions are provided on the circumferential wall portion of the rotary drive member, and the plurality of hollow portions are arranged at intervals along the circumferential direction of the circumferential wall portion. The hollow portions have a length direction on the surface of the circumferential wall portion, and the length direction is arranged obliquely relative to the axial direction of the rotary drive member. Wherein, when the rotary drive member is compressed in the axial direction, the two axial ends of the rotary drive member can be twisted relative to each other.

2. The rotary drive member according to claim 1, characterized in that: The hollow portion penetrates the circumferential wall portion in a radial direction of the rotary drive member to communicate with the through hole.

3. The rotary drive member according to claim 1, characterized in that: The sum of the areas of the plurality of hollowed-out portions is M, and the surface area of ​​the remaining region of the circumferential wall portion after removing the hollowed-out portions is N, wherein 0.75≤M / N≤1.

5.

4. The rotary drive member according to claim 1, characterized in that: A setting line is made on the circumferential wall portion which is parallel to the axial direction of the rotary drive member and tangent to the edge of the hollow portion, and an angle α is formed between the length direction of the hollow portion and the setting line, wherein 25 degrees ≤ α ≤ 75 degrees.

5. The rotary drive member according to claim 1, characterized in that: In the length direction of the hollow portion, the width of the hollow portion gradually decreases from the middle to both ends.

6. The rotary drive member according to claim 1, characterized in that: A torsion portion is formed between any two adjacent hollow portions on the circumferential wall portion, and the torsion portion has an outer end away from the through hole, and a groove is provided on the outer end. The groove has a groove bottom surface, and in the axial direction of the rotating drive member, the distance between the groove bottom surface and the hole wall surface of the through hole gradually increases.

7. The rotary drive member according to claim 6, characterized in that: There are multiple grooves, and the multiple grooves are arranged in sequence along the length direction of the hollowed-out portion.

8. The rotary drive member according to claim 7, characterized in that: In the length direction of the hollowed-out portion, adjacent edge lines of any two adjacent grooves overlap.

9. A hydraulic device, characterized in that: include: A cylinder body, wherein a working chamber is provided in the cylinder body, and a liquid outlet and a compensation hole communicating with the working chamber are provided on the cylinder body; A fluid replenishing cylinder, the fluid replenishing cylinder being connected to the compensation hole; A valve core, the valve core is arranged in the working chamber, a sealing member is sleeved on the valve core, and the sealing member slides through the compensation hole when the valve core moves along a set stroke in the working chamber, and a rotary driving member is arranged at one end of the valve core away from the liquid outlet, and the rotary driving member is a rotary driving member according to any one of claims 1 to 8; A linkage rod is provided through the cylinder body and the through hole and is connected to the valve core, wherein when the linkage rod drives the valve core to move, the rotary drive member can be compressed and the valve core can be driven to rotate.

10. The hydraulic device according to claim 9, characterized in that: A torsion portion is formed between any two adjacent hollow portions on the circumferential wall portion, and the torsion portion has an outer end away from the through hole, and a groove is provided on the outer end. The groove has a groove bottom surface, and in the direction of the valve core toward the linkage rod, the distance between the groove bottom surface and the hole wall surface of the through hole gradually increases.

Images