CN113356705A

CN113356705A - Hydraulic hinge

Info

Publication number: CN113356705A
Application number: CN202110851873.3A
Authority: CN
Inventors: 黎泽章
Original assignee: Zhaoqing Gaoyao Guanli Huangguan Door Control Co ltd
Current assignee: Zhaoqing Gaoyao Guanli Huangguan Door Control Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-09-07

Abstract

The invention provides a hydraulic hinge and relates to the technical field of hardware accessories. The hydraulic transmission device comprises a shaft sleeve, a transmission shaft, a transmission blade, a fixed blade and a hydraulic assembly, wherein the transmission blade and the fixed blade are sleeved outside the shaft sleeve, the hydraulic assembly and the transmission shaft are arranged in the shaft sleeve, one end of the transmission shaft is detachably connected with the transmission blade, and the other end of the transmission shaft is in transmission connection with the hydraulic assembly. The invention can realize the functions of buffering, resisting shock and reducing noise; and during production and manufacturing, the production process is simplified, and the production cost is reduced.

Description

Hydraulic hinge

Technical Field

The invention relates to the technical field of hardware accessories, in particular to a hydraulic hinge.

Background

At present, a common hinge is widely applied as an articulated element of a building door window, and the existing door window is mainly opened and closed through two modes. The first type is to adopt the traditional folding hinge, but this kind of hinge only has the articulated effect, and the user generally needs to push one side of door hard to move to the door frame when closing the door at any time, leads to doing hard too greatly like this and causes door and door frame collision sound too big or produce the huge impact of door and door frame, can reduce the life of door. The second is to adopt the combination of ordinary hinge, door-inhale and door closer three, and this kind of mode occupies a considerable proportion in the building hardware trade. Firstly, a door stopper is arranged at a certain position on the ground or the wall, and when the door is opened, the door is opened to the angle (generally 90 degrees), the door stopper is used for fixing the door. Then a door closer is installed on the upper end of the door frame, so that the door can be automatically closed within the specific angle range. The combination has the defects of complex installation, large occupied space and more materials; and the door closer has short service life, large force required when opening the door, and also has the problems of oil leakage and the like, and is not in line with humanized design. In view of this, the inventors have made extensive studies and then have proposed a hydraulic assembly and a hydraulic hinge.

Disclosure of Invention

The invention aims to provide a hydraulic hinge which can realize the functions of buffering, resisting shock and reducing noise; and during production and manufacturing, the production process is simplified, and the production cost is reduced.

The embodiment of the invention is realized by the following steps:

the embodiment provides a hydraulic hinge, and it includes axle sleeve, transmission shaft, transmission page or leaf, stationary vane and hydraulic assembly, above-mentioned transmission page or leaf and above-mentioned stationary vane cover are located outside above-mentioned axle sleeve, and above-mentioned hydraulic assembly and above-mentioned transmission shaft are installed in above-mentioned axle sleeve, and the one end of above-mentioned transmission shaft can be dismantled with above-mentioned transmission page or leaf and be connected, and the other end of above-mentioned transmission shaft is connected with above-mentioned hydraulic assembly transmission.

In some embodiments of the present invention, the hydraulic assembly includes a guide rod, a hydraulic sleeve with a spiral groove, a hydraulic piston movably disposed in the hydraulic sleeve, and a hydraulic column embedded in the hydraulic sleeve, the hydraulic column and one end of the hydraulic piston form a compression chamber, and the other end of the hydraulic piston is in transmission connection with the transmission shaft; an oil return cavity is arranged in the hydraulic column, a first oil return channel is arranged on the outer side wall of the hydraulic column, and the oil return cavity is communicated with the compression cavity through the first oil return channel; one end of the guide rod is connected to the hydraulic piston, and the other end of the guide rod slides along the spiral groove path.

In some embodiments of the present invention, the hydraulic piston includes a transmission portion, a pushing portion and a piston portion, which are sequentially connected, wherein a cross-sectional area of the pushing portion is smaller than a cross-sectional area of the piston portion, the piston portion is attached to an inner wall of the hydraulic sleeve, and the transmission portion is in transmission connection with the transmission shaft.

In some embodiments of the present invention, an oil drainage groove communicated with the compression chamber is formed in an inner wall of the hydraulic sleeve along an axial direction.

In some embodiments of the present invention, the number of the oil drainage grooves is three, and the three oil drainage grooves are annularly distributed along the inner wall of the hydraulic sleeve.

In some embodiments of the present invention, a seal ring is disposed between the hydraulic sleeve and the piston portion.

In some embodiments of the present invention, the hydraulic assembly further includes an adjusting screw for adjusting the volume of the oil return chamber, and the adjusting screw is threadedly connected to the hydraulic cylinder.

In some embodiments of the present invention, two of the spiral grooves are provided, and the two spiral grooves are disposed on the hydraulic sleeve in parallel; the guide rod penetrates through the hydraulic piston, and two ends of the guide rod respectively slide along the spiral groove path.

In some embodiments of the present invention, the guide bar further comprises a roller, wherein the roller is movably sleeved on the guide bar in the spiral groove.

In some embodiments of the present invention, the hydraulic cylinder further includes a force adjusting assembly, the force adjusting assembly includes a limiting rod, a force adjusting screw, and an elastic member sleeved on the transmission shaft, the transmission shaft is provided with a limiting groove, the limiting rod is installed in the limiting groove, the limiting rod and the hydraulic piston are respectively disposed at two ends of the elastic member, and the force adjusting screw is in threaded connection with the limiting groove and abuts against the limiting rod.

Compared with the prior art, the embodiment of the invention at least has the following advantages or beneficial effects:

the embodiment of the application provides a hydraulic hinge, and it includes axle sleeve, transmission shaft, transmission page or leaf, stationary blade and hydraulic assembly, and outside the axle sleeve was located to transmission page or leaf and stationary blade cover, hydraulic assembly and transmission shaft were installed in the axle sleeve, and the one end and the transmission page or leaf of transmission shaft can be dismantled and be connected, and the other end and the hydraulic assembly transmission of transmission shaft are connected. The transmission leaf and the fixed leaf are sleeved outside the shaft sleeve, the upper portion of the transmission shaft is in transmission connection with the hydraulic assembly, the transmission leaf and the fixed leaf are both installed in the shaft sleeve, and the shaft sleeve is used for wrapping internal workpieces and sealing and filling hydraulic oil in the shaft sleeve. The lower part of the transmission shaft is connected with the transmission page through a bolt.

When the door is in actual use, the transmission page can be arranged on the door, the fixed page is arranged on the door frame, and the transmission page drives the transmission shaft to rotate in the process that the transmission page rotates along with the opening of the door; the transmission shaft drives the hydraulic assembly to rotate, and hydraulic pressure is formed in the hydraulic assembly; after the door is opened, the door is forced to be automatically and slowly closed due to the action of hydraulic pressure inside the hydraulic assembly, so that the buffering effect on the door is achieved, violent impact is not generated between the door and the door frame, the service life of the door is prolonged, and the noise generated when the door is closed is reduced.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.

FIG. 1 is an exploded view of the hydraulic hinge of the present invention;

FIG. 2 is a schematic view of the internal connection structure of the hydraulic hinge of the present invention;

FIG. 3 is a schematic diagram of a hydraulic piston according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a force adjustment assembly according to an embodiment of the present invention;

fig. 5 is an overall appearance schematic diagram of the hydraulic hinge of the invention.

Icon: 100. a shaft sleeve; 110. a drive shaft; 111. a limiting groove; 120. a transmission page; 130. a fixed page; 140. a hydraulic assembly; 141. a guide bar; 142. a hydraulic sleeve; 1421. a helical groove; 1422. an oil drainage groove; 143. a hydraulic piston; 1431. a transmission section; 1432. a pushing part; 1433. a piston portion; 1434. a second oil return passage; 144. a hydraulic column; 1440. an oil return chamber; 1441. a first oil return passage; 145. a compression chamber; 150. a seal ring; 160. adjusting the screw rod; 170. rolling; 180. a force adjusting assembly; 181. a limiting rod; 182. force adjusting screw rods; 183. an elastic member; 190. a rotating assembly; 191. a positioning ball; 192. installing a sleeve; 193. a needle bearing; 200. a separator; 210. a one-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", "outer", etc. are used for indicating the orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships which are usually arranged when the products of the present invention are used, the description is only for convenience and simplicity, but the indication or suggestion that the referred devices or elements must have specific orientations, be constructed and operated in specific orientations, and thus, the present invention should not be construed as being limited. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" and the like, if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

Referring to fig. 1 to 5, the present embodiment provides a hydraulic hinge, which includes a shaft sleeve 100, a transmission shaft 110, a transmission page 120, a fixed page 130, and a hydraulic assembly 140, wherein the transmission page 120 and the fixed page 130 are sleeved outside the shaft sleeve 100, the hydraulic assembly 140 and the transmission shaft 110 are installed in the shaft sleeve 100, one end of the transmission shaft 110 is detachably connected to the transmission page 120, and the other end of the transmission shaft 110 is in transmission connection with the hydraulic assembly 140. The transmission blade 120 and the fixed blade 130 are sleeved outside the shaft sleeve 100, the upper part of the transmission shaft 110 is in transmission connection with the hydraulic assembly 140 and both are installed in the shaft sleeve 100, and the shaft sleeve 100 is used for wrapping internal workpieces and sealing hydraulic oil filled in the internal workpieces. The lower portion of the driving shaft 110 is connected to the driving leaf 120 by a bolt.

In this embodiment, the main structure of the hydraulic hinge can be made of stainless steel or aluminum type material, which has high hardness, good corrosion and oxidation resistance, and is not easy to rust.

In practical use, the transmission leaf 120 can be installed on the door, the fixed leaf 130 is installed on the door frame, and when the transmission leaf 120 rotates along with the opening of the door, the transmission leaf 120 drives the transmission shaft 110 to rotate; the transmission shaft 110 drives the hydraulic component 140 to rotate, and hydraulic pressure is formed in the hydraulic component 140; after the door is opened, the hydraulic component 140 acts to force the door to automatically and slowly close, so as to achieve the effect of buffering the door, avoid the violent impact between the door and the door frame, prolong the service life of the door and reduce the noise when the door is closed. In the mounting method, the transmission leaf 120 may be mounted on the door frame, and the fixed leaf 130 may be mounted on the door.

Referring to fig. 1, the hydraulic assembly 140 includes a guide rod 141, a hydraulic sleeve 142 having a spiral groove 1421, a hydraulic piston 143 movably disposed in the hydraulic sleeve 142, and a hydraulic column 144 embedded in the hydraulic sleeve 142, wherein a compression chamber 145 is formed by an end surface of the hydraulic column 144, an upper end surface of the hydraulic piston 143, and an inner wall surface of the hydraulic sleeve 142; the lower part of the hydraulic piston 143 is in transmission connection with the transmission shaft 110 through key slot matching; a return oil chamber 1440 is provided in the hydraulic cylinder 144, a first return oil passage 1441 is provided on an outer side wall of the hydraulic cylinder 144, and the return oil chamber 1440 and the compression chamber 145 communicate through the first return oil passage 1441. Upon opening the door, hydraulic fluid may flow from the compression chamber 145 into the return chamber 1440. One end of the guide rod 141 is connected to the side wall of the hydraulic piston 143 through a screw, and the other end of the guide rod 141 can slide along the path of the spiral groove 1421.

When the door is opened, the transmission leaf 120 drives the transmission shaft 110 to rotate when the transmission leaf 120 rotates along with the door; the transmission shaft 110 is in transmission connection with one end of the hydraulic piston 143 through key slot matching, and the transmission shaft 110 drives the hydraulic piston 143 to rotate; at this time, since the spiral groove 1421 is formed on the hydraulic sleeve 142, one end of the guide rod 141 is fixedly connected to the side wall of the hydraulic piston 143 through a thread, and the other end of the guide rod 141 slides along the path of the spiral groove 1421, during the sliding process of the guide rod 141 along the path of the spiral groove 1421, the hydraulic piston 143 slides into the compression chamber 145 to reduce the volume of the compression chamber 145, so that the hydraulic oil is forced to flow from the compression chamber 145 to the oil return chamber 1440. Therefore, it can be seen that there are two motions between the hydraulic piston 143 and the transmission shaft 110, namely, the hydraulic piston 143 rotates along with the rotation of the transmission shaft 110, and the hydraulic piston 143 and the transmission shaft 110 can slide along the same axis.

When the door is closed, due to the action of the hydraulic pressure inside the oil return chamber 1440, when the guide rod 141 connected with the hydraulic piston 143 slides along the path of the spiral groove 1421, the hydraulic piston 143 drives the transmission shaft 110 to rotate, the hydraulic piston 143 moves towards the outside of the compression chamber 145 to increase the volume of the compression chamber 145, and the hydraulic oil first oil return channel 1441 of the oil return chamber 1440 flows towards the compression chamber 145, so that the effect of buffering the door is achieved. In addition, since the hydraulic oil is enclosed in the compression chamber 145 by the hydraulic piston 143, and the hydraulic piston 143 is sleeved in the shaft sleeve 100, a double-layer protection is provided to prevent the liquid from flowing out, and the service life of the hydraulic hinge is prolonged.

The hydraulic assembly 140 further includes an adjusting screw 160 for adjusting the volume of the oil return chamber 1440, the inner wall of the oil return chamber 1440 is provided with internal threads, the adjusting screw 160 is provided with external threads, and the adjusting screw 160 is screwed in and out of the oil return chamber 1440 through thread fit, so that the volume of the oil return chamber 1440 can be controlled, the oil capacity of the oil return chamber 1440 is increased or decreased, and the size adjustment of the oil pressure is realized.

The hydraulic assembly 140 further comprises a roller 170, and the roller 170 is movably sleeved on the guide rod 141 in the spiral groove 1421, so that the guide rod 141 is not easily worn when sliding in the spiral groove 1421; but also ensures the smoothness and smoothness of the guide bar 141 when sliding.

In some other embodiments, there may be two spiral grooves 1421, and the two spiral grooves 1421 are disposed in parallel on the hydraulic sleeve 142; the guide rod 141 penetrates the hydraulic piston 143 in the radial direction, both ends of the guide rod 141 are respectively provided in the spiral grooves 1421 and can slide along the paths of the two spiral grooves 1421, but the rollers 170 may be provided on both ends of the guide rod 141.

In some other embodiments, referring to fig. 3, the hydraulic piston 143 includes a transmission portion 1431, a pushing portion 1432 and a piston portion 1433, which are connected in sequence, the cross-sectional area of the pushing portion 1432 is smaller than the cross-sectional area of the piston portion 1433, the piston portion 1433 is attached to the inner wall of the hydraulic sleeve 142, and the transmission portion 1431 is in transmission connection with the transmission shaft 110. The transmission part 1431 is of a hollow structure, internal teeth are arranged in the transmission part 1431, external teeth are arranged on the transmission shaft 110, and the internal teeth and the external teeth are meshed with each other to realize transmission. The piston portion 1433 engages with and slides along the inner wall of the hydraulic sleeve 142, thereby controlling the volume of the compression chamber 145. Because the cross-sectional area of the pushing part 1432 is smaller than the cross-sectional area of the piston part 1433, a gap exists between the side wall of the pushing part 1432 and the inner wall of the hydraulic sleeve 142, three oil drainage grooves 1422 with the same length and communicated with the compression chamber 145 are formed in the inner wall of the hydraulic sleeve 142 along the axial direction, the three oil drainage grooves 1422 are annularly distributed along the inner wall of the hydraulic sleeve 142, and of course, 2 or 7 oil drainage grooves can be formed, which is not limited here. In the sliding process of the piston part 1433 attached to the inner wall of the hydraulic sleeve 142, when the oil drainage groove 1422 connects the compression chamber 145 with the gap, the hydraulic oil compressed in the compression chamber 145 can flow into the gap rapidly through the oil drainage groove 1422, so as to realize the function of flushing and locking the door. In order to ensure the sealing performance, an annular groove is formed in the piston portion 1433, and a flexible seal ring 150 is provided in the annular groove, and the seal ring 150 is attached to the inner wall of the hydraulic sleeve 142.

When the hydraulic piston 143 slides from one end of the spiral groove 1421 to the other end, the door is opened to closed or closed to opened, and the maximum door opening rotation angle is 180 degrees; a positioning groove is also arranged in the middle of the spiral groove 1421, and when the rotation angle of the door automatically returns to about 150 degrees from 180 degrees, the guide rod 141 is clamped in the positioning groove to realize positioning; a horizontal transition section is further arranged in the middle of the spiral groove 1421, and when the rotation angle of the door is 92 degrees and 110 degrees, the door can be stopped arbitrarily; when the rotation angle of the door is less than 86, the door is automatically and slowly closed; when the rotation angle of the door is less than about 25 degrees, the function of impact locking is realized.

In the above embodiment, the hydraulic piston 143 is provided with the second oil return passage 1434 communicating with the compression chamber 145 in the axial direction thereof, and the one-way valve 210 is provided at an end of the second oil return passage 1434 close to the compression chamber 145, and the one-way valve 210 is used to control the opening and closing of the second oil return passage 1434. This check valve 210 includes limiting plate, connecting rod, closing plate and reset spring, and limiting plate and closing plate are connected respectively in the both ends of connecting rod, and the reset spring cover is located outside the connecting rod. When the hydraulic piston is installed, the limiting plate is located in the second oil return channel 1434 and abuts against one end of the return spring, and the other end of the return spring abuts against the inner wall of the hydraulic piston 143; the sealing plate is located outside the second oil return passage 1434 to seal the second oil return passage 1434.

When the door is opened, when the transmission shaft 110 rotates, and due to the existence of the spiral groove 1421, relative sliding is generated between the hydraulic piston 143 and the transmission shaft 110, so that the volume of the second oil return passage 1434 is reduced, and the check valve 210 is forced to be in an open state due to the oil pressure in the second oil return passage 1434, so that the hydraulic oil in the compression chamber 145 and the second oil return passage 1434 are communicated with each other, thereby ensuring proper door opening force and reducing hydraulic resistance. When the door is closed, when the hydraulic piston 143 moves into the compression chamber 145, the check valve 210 is forced to be in a closed state due to the oil pressure in the compression chamber 145, and the hydraulic oil cannot flow back into the return chamber any more and only flows to the return chamber 1440 through the first oil return passage 1441, so that the hydraulic oil in the compression chamber 145 is prevented from flowing back, and the hydraulic pressure is ensured to be stable.

Referring to fig. 4, the hydraulic hinge further includes a force adjusting assembly 180, the force adjusting assembly 180 includes a limiting rod 181, a force adjusting screw 182 and an elastic member 183, the elastic member 183 is a force adjusting spring, and the force adjusting spring is sleeved on the transmission shaft 110; the transmission shaft 110 is provided with a limiting groove 111, the limiting rod 181 is installed in the limiting groove 111, the limiting rod 181 and the hydraulic piston 143 are respectively arranged at two ends of the force adjusting spring, and the force adjusting screw 182 is in threaded connection with the limiting groove 111 and is abutted against the limiting rod 181.

When the hydraulic hinge is used, a user can drive the limiting rod 181 to move in the limiting groove 111 by adjusting the moving position of the force adjusting screw 182 in the limiting groove 111, and because the limiting rod 181 and the hydraulic piston 143 are respectively arranged at two ends of the force adjusting spring, when the limiting rod 181 moves in the limiting groove 111, the elastic force of the force adjusting spring is adjusted, and the hydraulic piston 143 arranged at one end of the force adjusting spring slides on the same axis with the transmission shaft 110 under the elastic force action of the elastic piece 183 and moves towards the compression chamber 145; because the hydraulic sleeve 142 is provided with the spiral groove 1421, one end of the guide rod 141 is connected with the hydraulic piston 143, the other end of the guide rod 141 slides along the path of the spiral groove 1421, and the elastic force of the force-adjusting spring is further transmitted to the guide rod 141, so that the moving force between the guide rod 141 and the hydraulic sleeve 142 during the sliding process along the path of the spiral groove 1421 is adjusted, and the force of the transmission page 120 during the rotation process is further adjusted to adapt to the force required by different people during opening and closing the door.

Referring to fig. 2 and 4, the hydraulic hinge further includes a rotating assembly 190, the rotating assembly 190 includes a plurality of positioning balls 191 and a mounting sleeve 192, the mounting sleeve 192 is sleeved on the transmission shaft 110, a first annular groove matched with the ball body of the positioning ball 191 is formed on the mounting sleeve 192, a second annular groove matched with the first annular groove is formed on the transmission shaft 110, and the plurality of positioning balls 191 are movably disposed in a cavity formed by the first annular groove and the second annular groove. When the driving blade 120 rotates with the door being opened, the driving blade 120 drives the driving shaft 110 to rotate therewith, so that the driving shaft 110 rotates more smoothly and smoothly around the positioning balls 191. In addition, along with the rotation of transmission shaft 110, guaranteed that transmission shaft 110 can not produce the removal in the axis direction, further improved the stability of axle sleeve 100 inner structure, prolonged hydraulic hinge's life.

The rotating assembly 190 further comprises a needle bearing 193, a limiting cavity is formed in the mounting sleeve 192, the needle bearing 193 is sleeved on the transmission shaft 110 and fixed in the limiting cavity, and therefore the rotating assembly can be more stable and smooth on the original basis.

This hydraulic hinge still includes separator 200, be equipped with separator 200 at axle sleeve 100 overcoat, locate separator 200 both sides wall respectively with transmission page or leaf 120 and stationary blade 130, separate transmission page or leaf 120 and stationary blade 130 through separator 200, help people in the use, avoid transmission page or leaf 120 and stationary blade 130 to produce wearing and tearing because of rotating many times, and then prolong hydraulic hinge's life, in addition, make to rotate more steadily and smoothly between transmission page or leaf 120 and the stationary blade 130.

In some other embodiments on which this embodiment is based, the spacer 200 may be a washer or a bearing.

In summary, an embodiment of the present invention provides a hydraulic hinge, including a shaft sleeve 100, a transmission shaft 110, a transmission blade 120, a fixed blade 130, and a hydraulic assembly 140, wherein the transmission blade 120 and the fixed blade 130 are sleeved outside the shaft sleeve 100, the hydraulic assembly 140 and the transmission shaft 110 are installed in the shaft sleeve 100, one end of the transmission shaft 110 is detachably connected to the transmission blade 120, and the other end of the transmission shaft 110 is in transmission connection with the hydraulic assembly 140. The invention can realize the functions of buffering, resisting shock and reducing noise; and during production and manufacturing, the production process is simplified, and the production cost is reduced.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic pressure hinge which characterized in that: the transmission hinge is sleeved outside the shaft sleeve, the hydraulic assembly and the transmission shaft are installed in the shaft sleeve, one end of the transmission shaft is detachably connected with the transmission hinge, and the other end of the transmission shaft is in transmission connection with the hydraulic assembly.

2. The hydraulic hinge according to claim 1, characterized in that: the hydraulic assembly comprises a guide rod, a hydraulic sleeve provided with a spiral groove, a hydraulic piston movably arranged in the hydraulic sleeve and a hydraulic column embedded in the hydraulic sleeve, the hydraulic column and one end of the hydraulic piston form a compression chamber, and the other end of the hydraulic piston is in transmission connection with the transmission shaft; an oil return cavity is arranged in the hydraulic column, a first oil return channel is arranged on the outer side wall of the hydraulic column, and the oil return cavity is communicated with the compression cavity through the first oil return channel; one end of the guide rod is connected with the hydraulic piston, and the other end of the guide rod slides along the spiral groove path.

3. The hydraulic hinge according to claim 2, characterized in that: the hydraulic piston comprises a transmission part, a pushing part and a piston part which are connected in sequence, the cross sectional area of the pushing part is smaller than that of the piston part, the piston part is attached to the inner wall of the hydraulic sleeve, and the transmission part is in transmission connection with the transmission shaft.

4. The hydraulic hinge according to claim 3, wherein: and the hydraulic piston is provided with a second oil return channel communicated with the compression chamber along the axis direction of the hydraulic piston, and the hydraulic piston is provided with a one-way valve for closing the second oil return channel.

5. The hydraulic hinge according to claim 3, wherein: and an oil drainage groove communicated with the compression chamber is formed in the inner wall of the hydraulic sleeve along the axis direction.

6. The hydraulic hinge according to claim 3, wherein: the piston further comprises a sealing ring arranged between the hydraulic sleeve and the piston part.

7. The hydraulic hinge according to claim 2, characterized in that: the hydraulic assembly further comprises an adjusting screw rod used for adjusting the volume of the oil return chamber, and the adjusting screw rod is in threaded connection with the hydraulic column.

8. The hydraulic hinge according to claim 2, characterized in that: the number of the spiral grooves is two, and the two spiral grooves are arranged on the hydraulic sleeve in parallel; the guide rod penetrates through the hydraulic piston, and two ends of the guide rod respectively slide along the spiral groove path.

9. The hydraulic hinge according to claim 2, characterized in that: the spiral groove is arranged in the spiral groove, and the spiral groove is arranged in the spiral groove.

10. The hydraulic hinge according to any one of claims 2 to 9, wherein: still including transferring the power subassembly, transfer the power subassembly to include gag lever post, transfer power screw rod and cover and locate the epaxial elastic component of transmission, be equipped with the spacing groove on the transmission shaft, the gag lever post install in the spacing inslot, the gag lever post with hydraulic piston locates respectively the both ends of elastic component, transfer power screw rod threaded connection in the spacing inslot and with the gag lever post butt.