Hinge hydraulic structure

Abstract

A hinge hydraulic structure comprises a body, the body comprises a shell, a hydraulic cylinder is arranged in the shell, a containing cavity and a hydraulic rod are arranged in the hydraulic cylinder, the hydraulic rod can be arranged in the containing cavity in an up-down sliding mode, a piston assembly is installed at the tail end of the inner side of the hydraulic rod, the piston assembly comprises an installation base and a first sealing ring, and the installation base comprises a first installation groove formed in the circumferential direction; the first sealing ring can be installed in the first installation groove in an up-down sliding mode, a plurality of oil passing holes are formed in the first installation groove, and the lower ends of the oil passing holes communicate with the lower end face of the installation base. When the piston assembly moves upwards, the first sealing ring slides downwards, the oil passing hole is communicated, and when the piston assembly moves downwards, the first sealing ring slides upwards, and the oil passing hole is sealed. According to the hinge hydraulic structure, the piston assembly moves upwards, the first sealing ring slides downwards, and the oil passing hole is communicated; when the piston assembly moves downwards, the first sealing ring slides upwards, the oil passing hole is sealed, the oil passing hole is sealed or conducted through the first sealing ring, and the function of a valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a hinge hydraulic structure. Background Art

[0002] Hydraulic systems are widely used in machinery, automobiles, aviation and other fields, especially in situations where precise control of force and speed is required. As an important application in hydraulic systems, hinge hydraulic structures are often used in doors and windows, robotic arms, car hoods and other equipment to control the opening and closing and position of hinges. Most existing hinge hydraulic structures have problems such as poor sealing performance, uneven oil flow, and complex structure, which leads to insufficient system reliability and durability.

[0003] Therefore, we designed a hinge hydraulic structure with a buffer structure and a long service life. This structure provides more reliable and stable working performance by optimizing the design of the hydraulic cylinder, hydraulic rod and piston assembly. The sealing design between the first sealing ring and the second sealing ring of the piston assembly and the mounting seat and the hydraulic rod effectively improves the sealing performance; when the piston assembly moves downward, the first sealing ring slides upward and seals the oil hole, thereby realizing the sealing or conduction of the oil hole by the first sealing ring, playing the role of a valve. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of this, an embodiment of the present specification provides a hinge hydraulic structure with a buffer structure and a long service life.

[0006] (II) Technical solution

[0007] In order to solve the technical problems, the utility model provides the following technical solutions: a hinge hydraulic structure, including a main body, the main body including a shell, a hydraulic cylinder is arranged in the shell, the hydraulic cylinder is provided with a accommodating chamber, and a hydraulic rod which can slide up and down in the accommodating chamber, a piston assembly is installed at the inner end of the hydraulic rod, the piston assembly includes a mounting seat and a first sealing ring, the mounting seat includes a first mounting groove arranged circumferentially, the first sealing ring can be slid up and down and installed in the first mounting groove, the first mounting groove is provided with a plurality of oil holes, the lower ends of the oil holes are connected with the lower end surface of the mounting seat; when the piston assembly moves upward, the first sealing ring slides downward and the oil holes are connected, and when the piston assembly moves downward, the first sealing ring slides upward and the oil holes are sealed.

[0008] Compared with the prior art, the utility model has the following advantages: the piston assembly moves up and down in the accommodating chamber, so that the hydraulic oil moves up and down to form a circulation. When the piston assembly moves upward, the first sealing ring slides downward, the first sealing ring loses its seal on the oil hole, the oil hole is connected, and the hydraulic oil enters the lower half of the accommodating chamber through the oil hole; when the piston assembly moves downward, the first sealing ring slides upward, the oil hole is sealed, and through simple structural coordination, the first sealing ring can seal or connect the oil hole, thereby playing the role of a valve.

[0009] In some embodiments, the mounting seat includes a second mounting groove arranged outside the first mounting groove, the second mounting groove is arranged circumferentially, a second sealing ring is arranged in the second mounting groove, and the second sealing ring is provided with a gap for circulating hydraulic oil. Through the improvement, the sealing of the piston assembly is stronger through the setting of the second sealing ring, and the gap for circulating hydraulic oil is provided through the second sealing ring, thereby controlling the flow rate of the hydraulic oil.

[0010] In some embodiments, the piston assembly includes a spring sheet, which is sleeved in the first mounting groove and arranged below the first sealing ring. The upper end surface of the spring sheet is abutted against the lower end surface of the first sealing ring. Through the improvement, through the arrangement of the spring sheet, the upper end surface of the spring sheet acts on the first sealing ring, thereby preventing the sealing ring from being unable to return to its position after moving downward, resulting in loss of sealing of the oil hole, and preventing the first sealing ring from failing.

[0011] In some embodiments, a threaded hole is provided on the lower end surface of the mounting seat, and a threaded portion that cooperates with the threaded hole is provided on the inner end of the hydraulic rod. The threaded portion of the hydraulic rod is screwed into the threaded hole. Through the improvement, the threaded portion of the hydraulic rod is screwed into the threaded hole of the mounting seat, thereby achieving a tight connection between the mounting seat and the hydraulic rod, and quick and easy installation.

[0012] In some embodiments, the main body includes a mounting shell, the inner end of the hydraulic rod is accommodated in the mounting shell, the mounting shell is accommodated in the accommodating chamber, a gap is left between the outer wall of the mounting shell and the inner wall of the accommodating chamber, a first through hole is provided at the upper end of the side wall of the mounting shell, and a second through hole is provided at the lower end of the side wall of the mounting shell. When the piston assembly moves downward, the hydraulic oil of the mounting shell flows into the first through hole through the second through hole, so that the hydraulic oil circulates in the accommodating chamber. Through the improvement, during buffering, the piston assembly moves downward, the first sealing ring seals the oil hole, and the hydraulic oil can only flow into the first through hole through the second through hole. Because the first through hole and the second through hole are both small oil holes, the hydraulic oil flows through the holes slowly, thereby achieving buffering.

[0013] In some embodiments, an end cover is installed on the upper end surface of the accommodating chamber, and the end cover is inserted into the upper end of the accommodating chamber. The end cover includes a circumferentially arranged oil groove, and the position of the oil groove is horizontally arranged with the position of the first through hole. A first oil hole is arranged in the oil groove, and a second oil hole is arranged on the lower end surface of the end cover. The first oil hole is connected with the second oil hole. When the piston assembly moves downward, the hydraulic oil flows into the oil groove through the first through hole, and the hydraulic oil in the oil groove flows into the second oil hole through the first oil hole and enters the inner cavity of the mounting shell. Through the improvement, the hydraulic oil is further buffered by the setting of the oil groove, and the first oil hole is connected with the second oil hole, and the second oil hole is connected with the inner cavity of the mounting shell, so that the hydraulic oil flows from the outside of the mounting shell to the inner cavity of the mounting shell, thereby realizing hydraulic action.

[0014] In some embodiments, a third mounting groove is circumferentially provided on the end cover, the third mounting groove is provided below the oil through groove, a third sealing ring is provided on the third mounting groove, and the wall surface of the third sealing ring is abutted against the inner wall surface of the mounting shell. Through the improvement, a third sealing ring is provided in the third mounting groove, so that a sealing arrangement is formed between the lower end portion of the end cover and the accommodating cavity, so that the hydraulic oil can only flow into the inner cavity of the mounting shell through the first oil through hole and the second oil through hole, and the sealing performance is good.

[0015] In some embodiments, the second oil hole is set to be through-through from top to bottom, and the main body includes an adjusting member, which is inserted into the second oil hole. The inner wall of the second oil hole is provided with an internal thread, and the outer wall of the adjusting member is provided with an external thread that cooperates with the internal thread. By rotating the adjusting member, the gap between the first oil hole and the second oil hole is controlled, thereby adjusting the flow rate of the hydraulic oil in the first oil hole flowing into the second oil hole. Through the improvement, by rotating the adjusting member, the internal thread and the external thread cooperate, so that the adjusting member moves up and down in the second oil hole, thereby adjusting the gap between the first oil hole and the second oil hole for circulating the hydraulic oil, thereby achieving the control of the flow rate of the hydraulic oil flowing into the inner cavity of the mounting shell.

[0016] In some embodiments, the upper end surface of the end cover is provided with a speed prompt mark corresponding to the position of the adjustment member. Through the improvement, the setting of the speed prompt mark allows the user to adjust the flow rate of the hydraulic oil more intuitively.

[0017] In some embodiments, a plurality of oil holes are arranged at equal intervals around the central axis of the hydraulic rod. Through the improvement, a plurality of oil holes are arranged at equal intervals around the central axis of the hydraulic rod, so that the hydraulic oil flows from the oil holes into the inner cavity of the lower half of the mounting shell more quickly, forming a diversion arrangement.

[0018] (III) Beneficial effects

[0019] The utility model provides a hinge hydraulic structure, in which the first sealing ring loses its seal on the oil passage hole due to the upward movement of the piston assembly and the downward movement of the first sealing ring, and compresses the spring sheet, thereby losing the seal on the oil passage hole, and the hydraulic oil flows from the gap of the second sealing ring to the oil passage hole, so that the hydraulic oil enters the inner cavity of the lower half of the mounting shell; the piston assembly moves downward, the first sealing ring moves upward, and the spring sheet recovers its deformation, assisting the first sealing ring to move upward, and the first sealing ring seals the oil passage hole, and the hydraulic oil in the lower half of the inner cavity of the mounting shell flows into the cavity formed by the mounting shell and the accommodating cavity through the second through hole, and flows into the first oil passage hole through the oil groove through the first through hole, because its route passes through multiple oil holes and the gap is small, thereby realizing the buffering of the hydraulic oil, and the first oil passage hole is connected with the second oil passage hole, and the adjusting member adjusts the gap size between the first oil passage hole and the second oil passage hole by moving up and down in the second oil passage hole, thereby realizing the speed regulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a partial cross-sectional structural schematic diagram of the piston assembly of the utility model moving upward;

[0023] Figure 3 It is a structural schematic diagram of the upward movement of the piston assembly of the utility model;

[0024] Figure 4 It is a partial cross-sectional structural schematic diagram of the piston assembly of the utility model moving downward;

[0025] Figure 5 It is a structural schematic diagram of the downward movement of the piston assembly of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the piston assembly of the utility model from another angle;

[0027] Figure 7 It is a structural schematic diagram of the mounting seat of the utility model;

[0028] Figure 8 It is a structural schematic diagram of the mounting base of the utility model from another angle;

[0029] Fig. 9 It is a structural schematic diagram of the hydraulic rod of the utility model;

[0030] Fig.10 It is a structural schematic diagram of the end cover of the utility model;

[0031] Fig.11 It is a cross-sectional structural schematic diagram of the adjusting member of the utility model moving downward on the end cover;

[0032] Fig.12 It is a cross-sectional structural schematic diagram of the adjusting member of the utility model moving upward on the end cover;

[0033] Fig.13 It is a structural schematic diagram of the speed prompt mark of the utility model;

[0034] Fig.14 It is a structural schematic diagram of the hydraulic cylinder of the utility model;

[0035] Fig.15 It is a structural schematic diagram of the installation shell of the utility model.

[0036] In the figure: 1. Shell; 2. Hydraulic cylinder; 2.1. Accommodating chamber; 3. Hydraulic rod; 3.1. Threaded portion; 4. Mounting shell; 4.1. First through hole; 4.2. Second through hole; 5. Piston assembly; 5.1. Mounting seat; 5.1.1. First mounting groove; 5.1.2. Second mounting groove; 5.1.3. Threaded hole; 5.1.4. Pressure relief hole; 5.2. First sealing ring; 5.3. Second sealing ring; 5.3.1. Notch; 5.4. Oil hole; 5.5. Shrapnel; 6. End cover; 6.1. Oil groove; 6.2. First oil hole; 6.3. Second oil hole; 6.3.1. Internal thread; 6.4. Third mounting groove; 6.5. Third sealing ring; 6.6. Speed ​​indicator; 7. Adjustment member; 7.1. External thread. DETAILED DESCRIPTION

[0037] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0039] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0040] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0041] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0042] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0043] See also Figure 1-6 In the present embodiment, a hinge hydraulic structure comprises a main body, the main body comprises a shell 1, a hydraulic cylinder 2 is arranged in the shell 1, a containing chamber 2.1 and a hydraulic rod 3 which can slide up and down in the containing chamber 2.1 are arranged in the hydraulic cylinder 2, a piston assembly 5 is installed at the inner end of the hydraulic rod 3, the piston assembly 5 comprises a mounting seat 5.1 and a first sealing ring 5.2, the mounting seat 5.1 comprises a first mounting groove 5.1.1 which is arranged circumferentially, the first sealing ring 5.2 can slide up and down in the first mounting groove 5.1.1, the first mounting groove 5.1.1 is provided with a plurality of oil holes 5.4, the lower end of the oil hole 5.4 is connected with the lower end surface of the mounting seat 5.1; when the piston assembly 5 goes up, the first sealing ring 5.2 slides down and the oil hole 5.4 is connected, and when the piston assembly 5 goes down, the first sealing ring 5.2 slides up and the oil hole 5.4 is sealed.

[0044] The piston assembly 5 moves up and down in the accommodating chamber 2.1, so that the hydraulic oil moves up and down to form a circulation. When the piston assembly 5 moves upward, the first sealing ring 5.2 slides downward, the first sealing ring 5.2 loses its sealing on the oil hole 5.4, the oil hole 5.4 is connected, and the hydraulic oil enters the lower half of the accommodating chamber 2.1 through the oil hole 5.4; when the piston assembly 5 moves downward, the first sealing ring 5.2 slides upward, and the oil hole 5.4 is sealed. Through simple structural coordination, the first sealing ring 5.2 can seal or connect the oil hole 5.4, thereby playing the role of a valve.

[0045] In some embodiments, Figure 5-Figure 6 As shown, the mounting seat 5.1 includes a second mounting groove 5.1.2 arranged outside the first mounting groove 5.1.1, the second mounting groove 5.1.2 is arranged circumferentially, a second sealing ring 5.3 is arranged in the second mounting groove 5.1.2, and the second sealing ring 5.3 is provided with a notch 5.3.1 for circulating hydraulic oil. It should be noted that the arrangement of the second sealing ring 5.3 makes the sealing of the piston assembly 5 stronger, and the second sealing ring 5.3 is provided with a notch 5.3.1 for circulating hydraulic oil, thereby controlling the flow rate of the hydraulic oil.

[0046] In some embodiments, Figure 5-Figure 6 As shown, the piston assembly 5 includes a spring piece 5.5, which is sleeved in the first mounting groove 5.1.1 and arranged below the first sealing ring 5.2. The upper end surface of the spring piece 5.5 abuts against the lower end surface of the first sealing ring 5.2. It should be noted that, through the arrangement of the spring piece 5.5, the upper end surface of the spring piece 5.5 acts on the first sealing ring 5.2 to prevent the sealing ring from being unable to return to its position after moving downward, resulting in loss of sealing of the oil hole 5.4, thereby preventing the first sealing ring 5.2 from failing.

[0047] In some embodiments, Figure 7-Figure 9 As shown, a threaded hole 5.1.3 is provided on the lower end surface of the mounting seat 5.1, and a threaded portion 3.1 matching the threaded hole 5.1.3 is provided on the inner end of the hydraulic rod 3. The threaded portion 3.1 of the hydraulic rod 3 is screwed into the threaded hole 5.1.3. It should be noted that the threaded portion 3.1 of the hydraulic rod 3 is screwed into the threaded hole 5.1.3 of the mounting seat 5.1, thereby achieving a tight connection between the mounting seat 5.1 and the hydraulic rod 3, and the installation is convenient and quick.

[0048] In some embodiments, Figure 7-Figure 9 As shown, the mounting seat 5.1 is provided with a pressure relief hole 5.1.4 which passes through from top to bottom, and the aperture of the pressure relief hole 5.1.4 is relatively small, so as to prevent the first sealing ring 5.2 from still sealing the oil hole 5.4 during the downward process without hindering the normal operation of the pressure relief structure. The hydraulic oil can be exchanged through the pressure relief hole 5.1.4, thereby ensuring the fault tolerance of the hydraulic mechanism and enhancing the safety of the hydraulic structure.

[0049] In some embodiments, Figure 14-15 As shown, the main body includes a mounting shell 4, the inner end of the hydraulic rod 3 is accommodated in the mounting shell 4, the mounting shell 4 is accommodated in the accommodating chamber 2.1, and a gap is left between the outer wall of the mounting shell 4 and the inner wall of the accommodating chamber 2.1. The upper end of the side wall of the mounting shell 4 is provided with a first through hole 4.1, and the lower end of the side wall of the mounting shell 4 is provided with a second through hole 4.2. When the piston assembly 5 moves downward, the hydraulic oil of the mounting shell 4 flows into the first through hole 4.1 through the second through hole 4.2, so that the hydraulic oil forms a circulation in the accommodating chamber 2.1. It should be noted that during buffering, the piston assembly 5 moves downward, the first sealing ring 5.2 seals the oil hole 5.4, and the hydraulic oil can only flow into the first through hole 4.1 through the second through hole 4.2. Because the first through hole 4.1 and the second through hole 4.2 are both small oil holes, the hydraulic oil passes through the holes slowly, thereby achieving buffering.

[0050] In some embodiments, Figure 10-12 As shown, an end cover 6 is installed on the upper end surface of the accommodating chamber 2.1, and the end cover 6 is plugged into the upper end of the accommodating chamber 2.1. The end cover 6 includes a circumferentially arranged oil groove 6.1, and the position of the oil groove 6.1 is arranged horizontally with the position of the first through hole 4.1. A first oil hole 6.2 is arranged in the oil groove 6.1, and a second oil hole 6.3 is arranged on the lower end surface of the end cover 6. The first oil hole 6.2 is connected to the second oil hole 6.3. When the piston assembly 5 moves downward, the hydraulic oil passes through the first through hole 4.1. The hydraulic oil flows into the oil groove 6.1, and the hydraulic oil in the oil groove 6.1 flows into the second oil hole 6.3 through the first oil hole 6.2 and enters the inner cavity of the mounting shell 4. It should be noted that through the setting of the oil groove 6.1, the hydraulic oil is further buffered, and the first oil hole 6.2 is connected with the second oil hole 6.3, and the second oil hole 6.3 is connected with the inner cavity of the mounting shell 4, so that the hydraulic oil flows from the outside of the mounting shell 4 to the inner cavity of the mounting shell 4, thereby realizing the hydraulic effect.

[0051] In some embodiments, Figure 10-12 As shown, a third mounting groove 6.4 is circumferentially provided on the end cover 6, and the third mounting groove 6.4 is provided below the oil through groove 6.1. A third sealing ring 6.5 is provided on the third mounting groove 6.4, and the wall surface of the third sealing ring 6.5 abuts against the inner wall surface of the mounting shell 4. It should be noted that, by providing the third sealing ring 6.5 in the third mounting groove 6.4, a sealing arrangement is formed between the lower end portion of the end cover 6 and the accommodating cavity 2.1, so that the hydraulic oil can only flow into the inner cavity of the mounting shell 4 through the first oil through hole 6.2 and the second oil through hole 6.3, and the sealing performance is good.

[0052] In some embodiments, Figure 10-12As shown, the second oil through hole 6.3 is set to be through-through from top to bottom, the main body includes an adjusting member 7, the adjusting member 7 is inserted into the second oil through hole 6.3, the inner wall of the second oil through hole 6.3 is provided with an internal thread 6.3.1, and the outer wall of the adjusting member 7 is provided with an external thread 7.1 that cooperates with the internal thread 6.3.1. By rotating the adjusting member 7, the gap between the first oil through hole 6.2 and the second oil through hole 6.3 is controlled, thereby adjusting the flow rate of the hydraulic oil in the first oil through hole 6.2 flowing into the second oil through hole 6.3. It should be noted that by rotating the adjusting member 7, due to the cooperation of the internal thread 6.3.1 and the external thread 7.1, the adjusting member 7 moves up and down in the second oil through hole 6.3, thereby adjusting the gap between the first oil through hole 6.2 and the second oil through hole 6.3 for circulating the hydraulic oil, thereby realizing the control of the flow rate of the hydraulic oil flowing into the inner cavity of the mounting shell 4.

[0053] In some embodiments, Fig.13 As shown, the upper end surface of the end cover 6 is provided with a speed prompt mark 6.6 at a position corresponding to the adjustment member 7. It should be noted that the setting of the speed prompt mark 6.6 allows the user to adjust the flow rate of the hydraulic oil more intuitively.

[0054] In some embodiments, Figure 7 As shown, a plurality of oil holes 5.4 are arranged at equal intervals around the central axis of the hydraulic rod 3. It should be noted that, by arranging a plurality of oil holes 5.4 at equal intervals around the central axis of the hydraulic rod 3, the hydraulic oil flows from the oil holes 5.4 into the inner cavity of the lower half of the mounting shell 4 more rapidly, forming a diversion arrangement.

[0055] It should be noted that the number of the oil holes 5.4 is four.

[0056] Working principle: the piston assembly 5 moves upward, the first sealing ring 5.2 moves downward, and compresses the spring sheet 5.5, thereby losing the seal on the oil hole 5.4, and the hydraulic oil flows from the gap 5.3.1 of the second sealing ring 5.3 to the oil hole 5.4, so that the hydraulic oil enters the lower half of the inner cavity of the mounting shell 4; the piston assembly 5 moves downward, the first sealing ring 5.2 moves upward, and the spring sheet 5.5 restores its deformation, assisting the first sealing ring 5.2 to move upward, and the first sealing ring 5.2 seals the oil hole 5.4 and is located in the lower half of the inner cavity of the mounting shell 4. The hydraulic oil flows into the cavity formed by the mounting shell 4 and the accommodating cavity 2.1 through the second through hole 4.2, and flows into the first oil hole 5.4 through the first through hole 4.1 and the oil groove 6.1. Because its route passes through multiple oil holes and the gap is small, the buffering of the hydraulic oil is achieved, and the first oil hole 5.4 is connected with the second oil hole 5.4. The adjusting member 7 adjusts the gap size between the first oil hole 5.4 and the second oil hole 5.4 by moving up and down in the second oil hole 5.4, thereby achieving the effect of speed regulation.

[0057] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A hinge hydraulic structure, comprising a body, wherein the body comprises a housing (1), characterized in that: A hydraulic cylinder (2) is provided in the housing (1), a housing chamber (2.1) and a hydraulic rod (3) slidably arranged in the housing chamber (2.1) are provided in the hydraulic cylinder (2), a piston assembly (5) is installed at the inner end of the hydraulic rod (3), the piston assembly (5) comprises a mounting seat (5.1) and a first sealing ring (5.2), the mounting seat (5.1) comprises a first mounting groove (5.1.1) arranged in a circumferential direction, the first sealing ring (5.2) is slidably installed in the first mounting groove (5.1.1) in an upward and downward direction, 5.1.1), the first mounting groove (5.1.1) is provided with a plurality of oil holes (5.4), the lower ends of the oil holes (5.4) are connected to the lower end surface of the mounting seat (5.1); when the piston assembly (5) moves upward, the first sealing ring (5.2) slides downward, and the oil holes (5.4) are connected; when the piston assembly (5) moves downward, the first sealing ring (5.2) slides upward, and the oil holes (5.4) are sealed.

2. A hinge hydraulic structure according to claim 1, characterized in that: The mounting seat (5.1) comprises a second mounting groove (5.1.2) arranged outside the first mounting groove (5.1.1), the second mounting groove (5.1.2) being arranged in a circumferential direction, a second sealing ring (5.3) being arranged in the second mounting groove (5.1.2), and the second sealing ring (5.3) being provided with a notch (5.3.1) for circulating hydraulic oil.

3. A hinge hydraulic structure according to claim 1, characterized in that: The piston assembly (5) comprises a spring sheet (5.5), the spring sheet (5.5) is sleeved in the first mounting groove (5.1.1), and the spring sheet (5.5) is arranged below the first sealing ring (5.2), and the upper end surface of the spring sheet (5.5) abuts against the lower end surface of the first sealing ring (5.2).

4. A hinge hydraulic structure according to claim 1, characterized in that: The lower end surface of the mounting seat (5.1) is provided with a threaded hole (5.1.3), the inner end of the hydraulic rod (3) is provided with a threaded portion (3.1) matching the threaded hole (5.1.3), and the threaded portion (3.1) of the hydraulic rod (3) is screwed into the threaded hole (5.1.3).

5. The hinge hydraulic structure according to claim 1, characterized in that: The main body comprises a mounting shell (4), the inner end of the hydraulic rod (3) is accommodated in the mounting shell (4), the mounting shell (4) is accommodated in the accommodating chamber (2.1), a gap is left between the outer wall surface of the mounting shell (4) and the inner wall surface of the accommodating chamber (2.1), a first through hole (4.1) is provided at the upper end of the side wall of the mounting shell (4), and a second through hole (4.2) is provided at the lower end of the side wall of the mounting shell (4), when the piston assembly (5) moves downward, the hydraulic oil of the mounting shell (4) flows into the first through hole (4.1) through the second through hole (4.2), so that the hydraulic oil forms a circulation in the accommodating chamber (2.1).

6. A hinge hydraulic structure according to claim 5, characterized in that: An end cover (6) is installed on the upper end surface of the accommodating chamber (2.1). The end cover (6) is plugged into the upper end of the accommodating chamber (2.1). The end cover (6) includes a circumferentially arranged oil groove (6.1). The position of the oil groove (6.1) is arranged horizontally with the position of the first through hole (4.1). A first oil through hole (6.2) is arranged in the oil groove (6.1). A second oil through hole (6.3) is arranged on the lower end surface of the end cover (6). The first oil through hole (6.2) is connected to the second oil through hole (6.3). When the piston assembly (5) moves downward, hydraulic oil flows into the oil groove (6.1) through the first through hole (4.1), and the hydraulic oil in the oil groove (6.1) flows into the second oil through hole (6.3) through the first oil through hole (6.2) and enters the inner cavity of the mounting shell (4).

7. A hinge hydraulic structure according to claim 6, characterized in that: A third mounting groove (6.4) is circumferentially provided on the end cover (6), the third mounting groove (6.4) being provided below the oil passage groove (6.1), a third sealing ring (6.5) being provided on the third mounting groove (6.4), the wall surface of the third sealing ring (6.5) being in contact with the inner wall surface of the mounting shell (4).

8. The hinge hydraulic structure according to claim 6, characterized in that: The second oil hole (6.3) is arranged to be through-through from top to bottom. The main body comprises an adjusting member (7) which is inserted into the second oil hole (6.3). The inner wall surface of the second oil hole (6.3) is provided with an internal thread (6.3.1). The outer wall surface of the adjusting member (7) is provided with an external thread (7.1) which matches the internal thread (6.3.1). By rotating the adjusting member (7), the gap between the first oil hole (6.2) and the second oil hole (6.3) is controlled, thereby adjusting the flow rate of the hydraulic oil in the first oil hole (6.2) flowing into the second oil hole (6.3).

9. A hinge hydraulic structure according to claim 8, characterized in that: The upper end surface of the end cover (6) is provided with a speed prompt mark (6.6) at a position corresponding to the adjusting member (7).

10. The hinge hydraulic structure according to claim 1, characterized in that: A plurality of the oil holes (5.4) are arranged at equal intervals in the circumferential direction around the central axis of the hydraulic rod (3).

Images