Two-section force connection hinge

Abstract

The utility model discloses a two-section force connection hinge, which relates to the technical field of hinges, and comprises a hinge main body arranged on a fixed plate; the movable seat is mounted on the movable plate; a hydraulic cylinder; the upper side of the first connecting piece is connected with the hinge main body through a first connecting piece rotating shaft; the front end of the second connecting piece is connected with the movable seat through a first connecting shaft of the movable seat, and a clamping shaft is arranged at the rear end of the second connecting piece; the rear end of the rocker arm is connected with the hinge main body through a rocker arm rotating shaft; in the earlier stage of the rotary closing process of the movable seat, as the first connecting piece pulls the piston rod, the hydraulic cylinder plays a role in buffering the door plate, and a section of force is formed; by means of the two-section force design of the hinge, when the hinge is used, backswing generated when the door plate is opened to the end is avoided, and the door plate can have multiple sections of stay points in the closing process.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a two-stage force-connected hinge. Background Technology

[0002] Connecting hinges are used to connect the doors of various storage cabinets, display cases, etc., guiding the door panels to rotate and open / close, and providing a buffering and damping effect during the opening and closing process to reduce damage to the door connection. These connecting hinges typically use a hydraulic cylinder to provide a section of force as the buffering force source. However, before guiding the door panel to open or close completely, this type of connecting hinge may experience a backswing, affecting the door panel's opening and closing operation, and may even cause damage to the hinge structure. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a two-stage force-connecting hinge.

[0004] A two-stage force-connected hinge according to an embodiment of the present invention includes: a hinge body mounted on a fixed plate; a movable seat mounted on the movable plate; a hydraulic cylinder connected to the hinge body via a hydraulic cylinder pivot; a first connecting member located in front of the hydraulic cylinder, the upper side of the first connecting member connected to the hinge body via a first connecting member pivot, the lower side of the first connecting member having a slot, and the rear side of the first connecting member connected to the piston rod of the hydraulic cylinder via a first connecting member pivot; a second connecting member located in front of the first connecting member, the front end of the second connecting member connected to the movable seat via a movable seat first pivot, the rear end of the second connecting member having a locking shaft that locks the slot, a second connecting member pivot between the movable seat first pivot and the locking shaft, and the second connecting member connected to the hinge body via the second connecting member pivot; and a rocker arm rotatably connected to the hinge body and the movable seat via pivots.

[0005] According to some embodiments of the present invention, the first connector includes first connector clips on the left and right sides, and a plurality of first connector stacks are disposed between the first connector clips on both sides, and each of the first connector stacks is stacked and connected together.

[0006] According to some embodiments of the present invention, the first connector includes an upper rotating connecting portion, the first connector shaft is inserted into the rotating connecting portion, a front clamping strip is provided on the lower front side of the rotating connecting portion, a rear clamping strip is provided on the lower rear side of the rotating connecting portion, the slot is located between the front clamping strip and the rear clamping strip, a rear connecting end is provided on the rear side of the rear clamping strip, the rear connecting end is located on the rear side of the first connector clip, the rear end of the first connector stack is the rear end face of the first connector stack, the rear connecting end and the rear end face of the first connector stack define a first connector connecting shaft space, and the first connector connecting shaft and the piston rod move within the first connector connecting shaft space.

[0007] According to some embodiments of the present invention, the upper side of the front clamping strip and the lower side of the rear clamping strip are respectively inserted with first connecting member plug posts, the first connecting member plug posts extend along the left and right side direction, and the first connecting member clamping piece and the first connecting member stacking piece are connected through the first connecting member plug posts.

[0008] According to some embodiments of the present invention, the slot is an arc-shaped slot, the lower end of the slot serves as the slot opening, the upper end of the slot is the slot end, and the arc-shaped protrusion of the slot protrudes toward the connecting shaft of the first connector.

[0009] According to some embodiments of the present invention, the second connector includes second connector clips on the left and right sides, and a plurality of second connector stacks are disposed between the second connector clips on both sides, and each of the second connector stacks is stacked and connected together.

[0010] According to some embodiments of the present invention, the second connector includes a lower support portion, the second connector shaft is inserted into the lower support portion, the lower support portion has a front extension portion on its front side, the movable seat first connecting shaft is inserted into the front end of the front extension portion, the lower support portion has a rear extension portion on its rear side, the retaining shaft is inserted into the rear end of the rear extension portion, the rear end of the rear extension portion is located behind the second connector clip, the rear end of the second connector stack is the rear end face of the second connector stack, the rear extension portion and the rear end face of the second connector stack define a retaining shaft space, and the retaining groove and the retaining shaft move within the retaining shaft space.

[0011] According to some embodiments of the present invention, a front extension reinforcing rib is provided on the upper side of the front extension, and a second connector plug is inserted into the front extension reinforcing rib and the rear end of the front extension, respectively. The second connector plug extends along the left and right side direction, and the second connector clip and the second connector stack are connected through the second connector plug.

[0012] According to some embodiments of the present invention, a U-shaped pin is inserted into the movable seat, and the two ends of the U-shaped pin are respectively the first connecting shaft of the movable seat and the second connecting shaft of the movable seat. The rear end of the rocker arm is connected to the hinge body through the rocker arm pivot, and the front end of the rocker arm is connected to the movable seat through the second connecting shaft of the movable seat.

[0013] According to some embodiments of the present invention, a reset torsion spring is fitted on the rocker arm shaft. The reset torsion spring has an upper support end and a lower support end. The upper support end of the torsion spring presses upward against the upper inner wall of the hinge body, and the lower support end of the torsion spring presses downward against the upper side of the second connecting member.

[0014] The two-stage force connecting hinge according to the present utility model embodiment has at least the following technical effects: In the early stage of the rotating closing process of the movable seat, the hydraulic cylinder plays a buffering role on the door panel due to the first connecting member pulling the piston rod, forming a first-stage force; in the later stage of the rotating closing process of the movable seat, after the first connecting member rotates to a certain angle, the locking shaft slides into the locking groove and presses against the locking groove, which plays a role in restricting the first connecting member from rotating back and the piston rod from rebounding, forming a second-stage force. Through this two-stage force design of the hinge, the hinge avoids the backswing that occurs when the door panel is opened to the end during use, and also allows the door panel to have multiple stopping points during the closing process.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a perspective view of the two-stage force-connecting hinge of this utility model;

[0018] Figure 2 This is a cross-sectional view of the two-stage force-connected hinge of this utility model;

[0019] Figure 3 This is an exploded view of the structure of the two-stage force-connecting hinge of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the two-stage force-connecting hinge of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection between the first and second connecting members in this utility model;

[0022] Figure 6 This is a perspective view of the first connecting member in this utility model;

[0023] Figure 7 This is an exploded view of the structure of the first connector in this utility model;

[0024] Figure 8 This is a perspective view of the second connector in this utility model;

[0025] Figure 9 This is an exploded view of the structure of the second connector in this utility model;

[0026] Figure 10 This is a schematic diagram of the working process of this utility model.

[0027] Figure label:

[0028] Hinge body 100, adjusting mounting plate 110, adjusting screw 111; movable seat 200; hydraulic cylinder 300, hydraulic cylinder shaft 301, piston rod 310, first connecting member connecting shaft 311; first connecting member 400, first connecting member shaft 401, first connecting member insertion post 402, first connecting member clamping piece 410, first connecting member stacked piece 420, first connecting member stacked piece rear end face 421, slot 430, slot opening 431, slot end 432, arc-shaped protrusion 433, rotating connecting part 440, front clamping bar 450, rear clamping bar 460, rear connecting end 470, first connecting member connecting shaft empty. 480; Second connector 500, second connector pivot 501, locking pivot 502, second connector insertion post 503, second connector clamping piece 510, second connector stacked piece 520, second connector stacked piece rear end face 521, lower support part 530, front extension part 540, front extension part reinforcing rib 541, second connector support shaft 542, rear extension part 550, locking pivot space 560; rocker arm 600, rocker arm pivot 610; U-shaped pin 700, movable seat first connecting shaft 710, movable seat second connecting shaft 720; reset torsion spring 800, torsion spring upper support end 810, torsion spring lower support end 820. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] The following is for reference. Figure 1 and Figure 2 A two-stage force-connected hinge according to an embodiment of the present invention is described.

[0034] like Figure 1 and Figure 2 As shown, the two-stage force-connected hinge according to an embodiment of the present utility model includes a hinge body 100, a movable seat 200, a hydraulic cylinder 300, a first connecting member 400, a second connecting member 500, and a rocker arm 600.

[0035] The hinge body 100 is mounted on the fixed plate; the movable seat 200 is mounted on the movable plate; see reference. Figure 3 , Figure 4 The hydraulic cylinder 300 is connected to the hinge body 100 via the hydraulic cylinder shaft 301; the upper side of the first connecting member 400 is connected to the hinge body 100 via the first connecting member shaft 401, the lower side of the first connecting member 400 is provided with a slot 430, and the rear side of the first connecting member 400 is connected to the piston rod 310 of the hydraulic cylinder 300 via the first connecting member shaft 311; the front end of the second connecting member 500 is connected to the movable seat 200 via the movable seat first connecting shaft 710, the rear end of the second connecting member 500 is provided with a retaining shaft 502, the retaining shaft 502 retains the slot 430, the movable seat first connecting shaft 710 and the retaining shaft 502 are provided with a second connecting member shaft 501, and the second connecting member 500 is connected to the hinge body 100 via the second connecting member shaft 501; the rocker arm 600 is rotatably connected to the hinge body 100 and the movable seat 200 via shafts respectively.

[0036] For example, such as Figure 1 and Figure 2As shown, the hinge body 100 is mounted on the fixed plate, serving as the fixed end of the hinge of this invention. The movable seat 200 is mounted on the movable plate, serving as the movable end of the hinge of this invention, and the movable plate serves as the door panel. The hinge body 100 and the movable seat 200 are rotatable. The hydraulic cylinder 300 is connected to the hinge body 100 via a hydraulic cylinder shaft 301, meaning that the hydraulic cylinder 300 and the hinge body 100 are rotatable. (Refer to...) Figure 3 , Figure 4 The first connecting member 400 is located in front of the hydraulic cylinder 300. The upper side of the first connecting member 400 is connected to the hinge body 100 via a first connecting member pivot 401, allowing the first connecting member 400 to rotate on the hinge body 100. A slot 430 is provided on the lower side of the first connecting member 400. The rear side of the first connecting member 400 is connected to the piston rod 310 of the hydraulic cylinder 300 via a first connecting member connecting shaft 311. The piston rod 310 can extend and retract on the hydraulic cylinder 300, and the first connecting member 400 and the piston rod 310 can rotate relative to each other. The second connecting member 500 is located in front of the first connecting member 400. The front end of the second connecting member 500 is connected to the movable seat 200 via a movable seat first connecting shaft 710, allowing the second connecting member 500 and the movable seat 200 to rotate relative to each other. A retaining shaft 502 is provided at the rear end of the second connecting member 500, which engages with the slot 430 and can slide within the range of the slot 430. A second connecting shaft 501 is provided between the first connecting shaft 710 of the movable seat and the retaining shaft 502. The second connecting member 500 is connected to the hinge body 100 through the second connecting shaft 501, allowing the second connecting member 500 to also rotate on the hinge body 100. The rocker arm 600 is located above the second connecting member 500. The rear end of the rocker arm 600 is connected to the hinge body 100 through the rocker arm shaft 610, allowing the rocker arm 600 and the hinge body 100 to rotate. The front end of the rocker arm 600 is connected to the movable seat 200 through the second connecting shaft 720 of the movable seat, allowing the rocker arm 600 and the movable seat 200 to also rotate.

[0037] In practical work, refer to Figure 4 , Figure 5 The hinge body 100 is mounted on the fixed plate, and the movable seat 200 is mounted on the movable plate. The hinge body 100 and the movable seat 200 can rotate and move together, causing the door panel to rotate and open / close. (Refer to...) Figure 10When the hinge of this utility model rotates to close from the open state, the movable seat 200 can rotate between the rocker arm 600 and the second connecting member 500, and the rocker arm 600, the second connecting member 500, and the hinge body 100, allowing the movable seat 200 to rotate and retract. During this rotational closing process, when the second connecting member 500 rotates, the retaining shaft 502 engages the retaining groove 430, allowing the second connecting member 500 to drive the first connecting member 400 to rotate, and the first connecting member 400 pulls the piston rod 310 to extend, thus creating a buffering effect.

[0038] In the above process, during the initial stage of the rotating closing of the movable seat 200, the first connecting member 400 pulls the piston rod 310, and the hydraulic cylinder 300 acts as a buffer for the door panel; this is the first stage of force. During the later stage of the rotating closing of the movable seat 200, the first connecting member 400 rotates to a certain angle, causing the retaining shaft 502 to slide into and press against the retaining groove 430, thus limiting the reverse rotation of the first connecting member 400 and the rebound of the piston rod 310; this is the second stage of force. This prevents the door panel from swaying back during the rotating closing process, and similarly, it also prevents swaying back during the rotating opening process.

[0039] In some embodiments of this utility model, reference is made to Figure 6 , Figure 7 The first connector 400 includes left and right first connector clips 410, and a plurality of first connector stacked pieces 420 are disposed between the left and right first connector clips 410, and the first connector stacked pieces 420 are stacked and connected together. In this way, the first connector 400 can be made by stacking several sheets of material to form the first connector clips 410 and the first connector stacked pieces 420, which reduces manufacturing process requirements and lowers production costs.

[0040] In some embodiments of this utility model, the first connector 400 includes an upper rotating connecting portion 440, a first connector shaft 401 is inserted into the rotating connecting portion 440, a front clamping strip 450 is provided on the lower front side of the rotating connecting portion 440, a rear clamping strip 460 is provided on the lower rear side of the rotating connecting portion 440, a slot 430 is located between the front clamping strip 450 and the rear clamping strip 460, and a rear connecting end 470 is provided on the rear side of the rear clamping strip 460, the rear connecting end 470 is located on the rear side of the first connector clamping piece 410. The rear end of the first connector plate 420 is the rear end face 421 of the first connector plate. The rear connecting end 470 and the rear end face 421 of the first connector plate define the first connector connecting shaft space 480. The first connector connecting shaft 311 and the piston rod 310 move within the first connector connecting shaft space 480. In this way, the above structure can ensure the overall structural strength of the first connector 400, and the rear connecting end 470 of the first connector clip 410 extends out, making it easier to connect with the piston rod 310.

[0041] In some embodiments of this utility model, the upper side of the front clamping strip 450 and the lower side of the rear clamping strip 460 are respectively inserted with first connecting member insertion posts 402. The first connecting member insertion posts 402 extend along the left and right sides. The first connecting member clamping piece 410 and the first connecting member stack 420 are connected through the first connecting member insertion posts 402 to ensure that the connection between the first connecting member clamping piece 410 and the first connecting member stack 420 is sufficiently stable and reliable to ensure the structural strength of the first connecting member 400.

[0042] In some embodiments of this utility model, the slot 430 is an arc-shaped slot, with its lower end serving as the slot opening 431 and its upper end as the slot end 432. The arc-shaped protrusion 433 of the slot 430 protrudes towards the connecting shaft 311 of the first connector, ensuring the self-locking effect of the slot 430 on the locking shaft 502. Once the locking shaft 502 slides past the position of the arc-shaped protrusion 433 of the slot 430, the door panel is less likely to spring back.

[0043] In some embodiments of this utility model, reference is made to Figure 8 , Figure 9 The second connector 500 includes left and right second connector clips 510, and a plurality of second connector stacked pieces 520 are disposed between the left and right second connector clips 510, and the stacked pieces 520 are stacked together. In this way, the second connector 500 can be manufactured by stacking several sheets to form the second connector clips 510 and the second connector stacked pieces 520, reducing manufacturing process requirements and lowering production costs.

[0044] In some embodiments of this utility model, the second connector 500 includes a lower support portion 530, a second connector shaft 501 is inserted into the lower support portion 530, a front extension portion 540 is provided on the front side of the lower support portion 530, a movable seat first connecting shaft 710 is inserted into the front end of the front extension portion 540, a rear extension portion 550 is provided on the rear side of the lower support portion 530, a retaining shaft 502 is inserted into the rear end of the rear extension portion 550, the rear end of the rear extension portion 550 is located on the rear side of the second connector clip 510, the rear end of the second connector stack 520 is the rear end face 521 of the second connector stack, the rear extension portion 550 and the rear end face 521 of the second connector stack define a retaining shaft space 560, and the retaining groove 430 and the retaining shaft 502 move within the retaining shaft space 560. The above structure can ensure the overall structural strength of the second connector 500, and by utilizing the rear extension 550 of the second connector clip 510, the clip 502 can be more easily installed on the rear extension 550.

[0045] In some embodiments of this utility model, a front extension rib 541 is provided on the upper side of the front extension 540. A second connector insertion post 503 is inserted into the front extension rib 541 and the rear end of the front extension 540, respectively. The second connector insertion post 503 extends along the left and right sides. The second connector clip 510 and the second connector stack 520 are connected through the second connector insertion post 503, which further ensures a stable connection between the second connector clip 510 and the second connector stack 520 and ensures the structural strength of the second connector 500.

[0046] In some embodiments of this utility model, reference is made to Figure 1 , Figure 2 An adjusting mounting plate 110 is provided on the hinge body 100, and the hinge body 100 is mounted on the fixed plate via the adjusting mounting plate 110. The adjusting mounting plate 110 is connected to the hinge body 100 via adjusting screws 111. The adjusting mounting plate 110 is relatively adjustable on the hinge body 100, allowing the hinge body 100 to be finely adjusted in its fixed position and angle on the fixed plate, which is equivalent to adjusting the installation position and angle of the door panel.

[0047] In some embodiments of this utility model, reference is made to Figure 2 , Figure 3 A U-shaped pin 700 is inserted into the movable seat 200. The two ends of the U-shaped pin 700 are the first connecting shaft 710 and the second connecting shaft 720 of the movable seat, respectively. This means that the first connecting shaft 710 and the second connecting shaft 720 of the movable seat can be installed simply by inserting the U-shaped pin 700. The rear end of the rocker arm 600 is connected to the hinge body 100 via the rocker arm pivot 610, allowing the rocker arm 600 and the hinge body 100 to rotate. The front end of the rocker arm 600 is connected to the movable seat 200 via the second connecting shaft 720 of the movable seat, allowing the rocker arm 600 and the movable seat 200 to rotate as well.

[0048] In some embodiments of this utility model, reference is made to Figure 3 , Figure 4 A reset torsion spring 800 is mounted on the rocker arm pivot 610. The reset torsion spring 800 has an upper support end 810 and a lower support end 820. The upper support end 810 presses upward against the upper inner wall of the hinge body 100, and the lower support end 820 presses downward against the upper side of the second connector 500, providing reset elasticity for the rocker arm and even the entire door panel.

[0049] In some embodiments of this utility model, a second connector support shaft 542 is provided on the second connector 500 to press against the lower support end 820 of the torsion spring, thereby reducing the friction between the lower support end 820 of the torsion spring and the second connector 500.

[0050] The door hinge according to the second aspect of the present invention includes the two-stage force-connecting hinge according to the first aspect of the present invention described above.

[0051] According to the embodiments of the present invention, the door hinge adopts the above-mentioned two-stage force connection hinge, which reduces the thickness of the door hinge, facilitates the miniaturization design of the door hinge, and can improve the buffering effect of the door hinge during movement and enhance the quietness effect.

[0052] Other components and operations of the door hinges according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0053] The following is for reference. Figure 1 and Figure 2 A two-stage force-connected hinge according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0054] like Figure 1 and Figure 2 As shown, the two-stage force-connecting hinge of this utility model embodiment includes a hinge body 100, a movable seat 200, a hydraulic cylinder 300, a first connecting member 400, a second connecting member 500, a rocker arm 600, a U-shaped pin 700, and a return torsion spring 800.

[0055] The hinge body 100 is mounted on the fixed plate, and the hinge body 100 includes an adjusting mounting plate 110 and adjusting screws 111. The movable seat 200 is mounted on the movable plate.

[0056] The hydraulic cylinder 300 is provided with a hydraulic cylinder rotating shaft 301, a piston rod 310, and a first connecting member connecting shaft 311. The first connecting member 400 is provided with a first connecting member rotating shaft 401 and a first connecting member insertion post 402. The first connecting member 400 includes a first connecting member clamping piece 410, a first connecting member stacked piece 420, a rear end face 421 of the first connecting member stacked piece, a slot 430, a slot opening 431, a slot end 432, an arc-shaped protrusion 433, a rotating connecting part 440, a front clamping bar 450, a rear clamping bar 460, a rear connecting end 470, and a first connecting member connecting shaft space 480. The second connecting member 500 is provided with a second connecting member rotating shaft 501, a clamping shaft 502, and a second connecting member insertion post 503. The second connector 500 includes a second connector clip 510, a second connector stack 520, a rear end face 521 of the second connector stack, a lower support portion 530, a front extension portion 540, a front extension reinforcing rib 541, a second connector support shaft 542, a rear extension portion 550, and a shaft locking space 560. The rocker arm 600 is provided with a rocker arm pivot 610. The U-shaped pin 700 is provided with a movable seat first connecting shaft 710 and a movable seat second connecting shaft 720. The reset torsion spring 800 includes a torsion spring upper support end 810 and a torsion spring lower support end 820.

[0057] According to the two-stage force connection hinge of this utility model embodiment, by such a setting, at least the following effects can be achieved: through the two-stage force connection design of the hinge, the hinge avoids the back swing that occurs when the door panel is opened to the end during use, and also allows the door panel to have multiple stopping points during the closing process; the first connecting member 400 can be made by stacking several sheets to form a first connecting member clamp 410 and a first connecting member stack 420, and the second connecting member 500 can be made by stacking several sheets to form a second connecting member clamp 510 and a second connecting member stack 520, reducing manufacturing process requirements and lowering production costs.

[0058] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A two-stage force-connected hinge, characterized in that, include: The hinge body (100) is mounted on the fixed plate; Movable base (200), mounted on the movable plate; A hydraulic cylinder (300) is connected to the hinge body (100) via a hydraulic cylinder shaft (301); The first connector (400) is connected to the hinge body (100) on its upper side via a first connector pivot (401). The first connector (400) has a slot (430) on its lower side. The first connector (400) is connected to the piston rod (310) of the hydraulic cylinder (300) on its rear side via a first connector connecting shaft (311). The second connector (500) has its front end connected to the movable seat (200) via the first connecting shaft (710) of the movable seat. The rear end of the second connector (500) is provided with a retaining shaft (502), which locks the retaining groove (430). A second connector pivot (501) is provided between the first connecting shaft (710) of the movable seat and the retaining shaft (502). The second connector (500) is connected to the hinge body (100) via the second connector pivot (501). The rocker arm (600) is rotatably connected to the hinge body (100) and the movable seat (200) via a pivot.

2. The two-stage force-connected hinge according to claim 1, characterized in that, The first connector (400) includes first connector clips (410) on the left and right sides, and a plurality of first connector stacks (420) are disposed between the first connector clips (410) on both sides, and the first connector stacks (420) are stacked and connected together.

3. The two-stage force-connected hinge according to claim 2, characterized in that, The first connector (400) includes an upper rotating connecting portion (440), a first connector shaft (401) is inserted into the rotating connecting portion (440), a front clamping strip (450) is provided on the lower front side of the rotating connecting portion (440), a rear clamping strip (460) is provided on the lower rear side of the rotating connecting portion (440), a slot (430) is located between the front clamping strip (450) and the rear clamping strip (460), and a rear connector is provided on the rear side of the rear clamping strip (460). The rear connecting end (470) is located behind the first connecting piece clip (410). The rear end of the first connecting piece stack (420) is the rear end face (421) of the first connecting piece stack. The rear connecting end (470) and the rear end face (421) of the first connecting piece stack define a first connecting shaft space (480). The first connecting shaft (311) and the piston rod (310) move within the first connecting shaft space (480).

4. The two-stage force-connected hinge according to claim 3, characterized in that, The upper side of the front clamping strip (450) and the lower side of the rear clamping strip (460) are respectively inserted with first connector plugs (402). The first connector plugs (402) extend along the left and right sides. The first connector clip (410) and the first connector stack (420) are connected through the first connector plugs (402).

5. The two-stage force-connected hinge according to claim 1 or 3, characterized in that, The slot (430) is an arc-shaped slot. The lower end of the slot (430) serves as the slot opening (431), and the upper end of the slot (430) serves as the slot end (432). The arc-shaped protrusion (433) of the slot (430) protrudes in the direction of the connecting shaft (311) of the first connector.

6. The two-stage force-connected hinge according to claim 1, characterized in that, The second connector (500) includes second connector clips (510) on the left and right sides, and a plurality of second connector stacks (520) are disposed between the second connector clips (510) on both sides, and the second connector stacks (520) are stacked and connected together.

7. The two-stage force-connecting hinge according to claim 6, characterized in that, The second connector (500) includes a lower support portion (530), a second connector shaft (501) is inserted into the lower support portion (530), a front extension portion (540) is provided on the front side of the lower support portion (530), a first connecting shaft (710) of the movable seat is inserted into the front end of the front extension portion (540), a rear extension portion (550) is provided on the rear side of the lower support portion (530), a retaining shaft (502) is inserted into the rear end of the rear extension portion (550), the rear end of the rear extension portion (550) is located behind the second connector clip (510), the rear end of the second connector stack (520) is the rear end face (521) of the second connector stack, the rear extension portion (550) and the rear end face (521) of the second connector stack define a retaining shaft space (560), and the retaining groove (430) and the retaining shaft (502) move within the retaining shaft space (560).

8. The two-stage force-connected hinge according to claim 7, characterized in that, The front extension (540) is provided with a front extension reinforcing rib (541) on its upper side. A second connector plug (503) is inserted into the front extension reinforcing rib (541) and the rear end of the front extension (540). The second connector plug (503) extends along the left and right sides. The second connector clip (510) and the second connector stack (520) are connected through the second connector plug (503).

9. The two-stage force-connected hinge according to claim 1, characterized in that, A U-shaped pin (700) is inserted into the movable seat (200). The two ends of the U-shaped pin (700) are the first connecting shaft (710) and the second connecting shaft (720) of the movable seat, respectively. The rear end of the rocker arm (600) is connected to the hinge body (100) through the rocker arm pivot (610), and the front end of the rocker arm (600) is connected to the movable seat (200) through the second connecting shaft (720) of the movable seat.

10. The two-stage force-connected hinge according to claim 9, characterized in that, A reset torsion spring (800) is fitted on the rocker arm shaft (610). The reset torsion spring (800) has an upper support end (810) and a lower support end (820). The upper support end (810) presses upward against the upper inner wall of the hinge body (100), and the lower support end (820) presses downward against the upper side of the second connector (500).

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