Hinge with sliding fork reset structure

Abstract

The utility model discloses a hinge with a sliding fork reset structure, which is characterized in that a damper kit is arranged in a hinge arm, the damper kit comprises a damper mounting shell, a sliding fork and a damper, the sliding fork drives the damper to contract, the sliding fork and the damper mounting shell are relatively connected in a front-back sliding manner, a hook groove is formed at the front end part of the sliding fork, a hook inner edge is formed in the hook groove, and a hook outer edge is formed in the hook inner edge. A hook outer edge is formed at the front end of the sliding fork, the hook outer edge corresponds to the hook inner edge in position, a fork plate part is formed on the driving arm, and a buffering pulling protruding column used for making contact with the hook inner edge in the door closing process and a reset pushing protruding part used for making contact with the hook outer edge in the door opening process are formed on the inner side of the fork plate part. The hinge facilitates flexible door opening, so that the use experience of the hinge is improved.

Description

Technical Field

[0001] The utility model relates to the field of door hinges, in particular to a hinge with a sliding fork reset structure. Background Art

[0002] At present, the cabinet door of furniture is connected with the cabinet body through a hinge. The hinge is provided with a base assembly, a hinge arm and a hinge cup. The hinge arm is installed on the base assembly, the hinge arm is connected with the hinge cup, the base assembly is installed on the inner wall of the cabinet body panel, the hinge cup is embedded in the inner wall of the cabinet door, the hinge is provided with a torsion spring for driving the cabinet door to close automatically, and correspondingly, the hinge is provided with a damper for buffering the closing of the cabinet door.

[0003] There is a type of existing hinge with the damper placed in front. For example, in the "hinge for thick doors with damper placed in front" of Chinese Utility Model Patent Publication No. CN219412259U, the hinge includes a base assembly, a hinge arm, a hinge cup, a first fixed hinge pin, a second fixed hinge pin, a driving arm and a swinging arm. The rear part of the hinge arm is installed on the base assembly. The front part of the hinge arm is hinged to one end of the driving arm through the first fixed hinge pin, and the front part of the hinge arm is hinged to one end of the swinging arm through the second fixed hinge pin. The other corresponding ends of the driving arm and the swinging arm are respectively hinged to the hinge cup, and the second fixed hinge pin is sleeved with a closing driving torsion spring. Among them, it further includes a damper kit. The damper kit includes a damper installation shell, a sliding fork, a positioning pin and a damper. The upper and lower sides of the damper installation shell are respectively formed with sliding grooves. The sliding fork includes a pressing plate and two fork pieces. The two ends of the pressing plate are respectively integrally connected with one end of the corresponding fork piece. The fork piece is slidably connected with the corresponding sliding groove in a relative front-back manner. The other corresponding end of the fork piece is formed with a hook groove. The driving arm is formed with a fork plate part. Inner convex columns are respectively formed on the inner sides of the two fork plate parts. The inner convex columns are hooked with the corresponding hook grooves. The fork piece is clamped between the bottom of the corresponding sliding groove and the fork plate part. The damper installation shell and the sliding fork are arranged in the hinge arm. A sleeve cavity is formed in the damper installation shell. The damper is adaptively inserted into the sleeve cavity. The damper is provided with a piston rod, and the piston rod is abutted and connected with the pressing plate. The first fixed hinge pin is adaptively passed through the hinge arm and the two fork plate parts. The positioning pin is adaptively passed through the hinge arm and the damper installation shell. The damper installation shell and the sliding fork are arranged on the front side of the base assembly. However, in the actual use process, the above hinge still has some defects, such as Figure 10As shown, within the swinging range of the inner convex post 90 around the first fixed hinge pin 73, in order to make the thrust of the inner convex post 90 on the sliding fork have a gradually increasing process, so during the closing process, when the inner convex post 90 just contacts the hook groove 91, the thrust of the inner convex post 90 on one side of the hook groove 91 forms a large angle with the moving direction of the sliding fork. Thus, the effective thrust of the inner convex post 90 on the sliding fork is small. As the inner convex post 90 swings counterclockwise, the inner convex post 90 further enters the hook groove 91, and the thrust of the inner convex post 90 on the hook groove 91 gradually tends to be parallel to the moving direction of the sliding fork, making the effective thrust of the inner convex post 90 on the sliding fork gradually increase. However, during the opening process, as Figure 10 shown, when the inner convex post 90 is close to swinging out of the hook groove 91, the thrust of the inner convex post 90 on the corresponding other side of the hook groove 91 is small. That is to say, during the opening process, the thrust of the inner convex post 90 on the sliding fork gradually becomes smaller, resulting in too small a reset thrust on the sliding fork, and as a result, the situation that the sliding fork resets and moves inflexibly occurs. Practically, it is reflected as inflexible opening, which is not conducive to improving the user experience of the hinge. Therefore, the above hinge needs to be improved. Summary of the Invention

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide a hinge with a sliding fork reset structure, which is beneficial to improving the user experience of the hinge.

[0005] The purpose of the present utility model is achieved through the following technical solutions.

[0006] The hinge with a sliding fork reset structure disclosed by the present utility model includes a hinge arm, a hinge cup, a first fixed hinge pin, a second fixed hinge pin, a driving arm, and a swinging arm. The front part of the hinge arm is hinged to one end of the driving arm through the first fixed hinge pin, and the front part of the hinge arm is hinged to one end of the swinging arm through the second fixed hinge pin. The corresponding other ends of the driving arm and the corresponding other ends of the swinging arm are respectively hinged to the hinge cup. A closing driving torsion spring is sleeved on the second fixed hinge pin. Among them, a damper kit is provided inside the hinge arm. The damper kit includes a damper installation shell, a sliding fork, and a damper. The sliding fork drives the damper to contract. The sliding fork is slidably connected to the damper installation shell in the front-back direction. A hook groove is formed at the front end of the sliding fork. A hook inner edge is formed inside the hook groove. A hook outer edge is formed at the front end of the sliding fork. The hook outer edge corresponds to the position of the hook inner edge. The driving arm is formed with a fork plate part. Inside the fork plate part, there is a buffer pulling convex post for contacting the hook inner edge during the closing process and a reset pushing convex part for contacting the hook outer edge during the opening process.

[0007] Preferably, the outer shape of the reset pushing convex part is set to be cylindrical.

[0008] Preferably, a guiding outer fillet for contacting the reset pushing convex part is connected to the outer edge of the hook, and the guiding outer fillet is formed on the sliding fork.

[0009] Preferably, a back concave pit is formed on the outer side of the fork plate part, and the back concave pit is located within the corresponding reset pushing convex part.

[0010] Preferably, the damper is provided with a piston rod, a concave platform is formed on the inner wall of the rear end of the sliding fork, and the rear end of the piston rod is arranged within the concave platform.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: by providing that a hook inner edge is formed within the hook groove, a hook outer edge is formed at the front end of the sliding fork, the hook outer edge corresponds to the hook inner edge in position, the driving arm is formed with a fork plate part, a buffer pulling convex column for contacting the hook inner edge during the closing process and a reset pushing convex part for contacting the hook outer edge during the opening process are formed on the inner side of the fork plate part, and the sliding fork drives the damper to contract, it can maximally avoid the situation of jamming of the sliding fork during the reset process, thereby being beneficial to improving the usage experience of the hinge. Description of the Drawings

[0012] Figure 1 is a three-dimensional structural schematic diagram of the hinge of the present utility model.

[0013] Figure 2 is a three-dimensional structural schematic diagram of the hinge of the present utility model with the hinge arm removed and in the corresponding open-door state.

[0014] Figure 3 is a three-dimensional structural schematic diagram of the hinge of the present utility model with the hinge arm removed and in the corresponding closing process state.

[0015] Figure 4 is a three-dimensional structural schematic diagram of the hinge of the present utility model with the hinge arm removed and in the corresponding closed state.

[0016] Figure 5 is a top-view structural schematic diagram of the combination of the hinge of the present utility model in the corresponding closed state with the cabinet board and the door board.

[0017] Figure 6 is a cross-sectional structural schematic diagram of the hinge of the present utility model at the axis position of the piston rod.

[0018] Figure 7 is a cross-sectional structural schematic diagram of the hinge of the present utility model at the position of the buffer pulling convex column.

[0019] Figure 8 is a three-dimensional structural schematic diagram of the sliding fork of the present utility model.

[0020] Figure 9This is a three-dimensional structural schematic diagram of the drive arm of the present utility model.

[0021] Figure 10 This is a structural schematic diagram of the combination of the sliding fork and the drive arm in the prior art.

[0022] Figure 11 This is a structural schematic diagram of the combination of the sliding fork and the drive arm of the present utility model corresponding to the state of closing the door.

[0023] Figure 12 This is a structural schematic diagram of the combination of the sliding fork and the drive arm of the present utility model corresponding to the state of opening the door.

[0024] Label description: 1 - Base assembly; 2 - Hinge arm; 3 - Hinge cup; 4 - Damper kit; 41 - Damper mounting shell; 42 - Sliding fork; 4201 - Concave platform; 4210 - Hook pulling groove; 4211 - Inner edge of the hook; 4212 - Outer edge of the hook; 4213 - Guiding outer rounded corner; 44 - Damper; 441 - Piston rod; 73 - First fixed hinge pin; 74 - Second fixed hinge pin; 11 - Drive arm; 111 - Fork plate part; 1111 - Buffer pulling convex column; 1112 - Reset pushing convex part; 1113 - Back concave pit; 12 - Swing arm; 13 - Closing drive torsion spring; 99 - Cabinet panel 99; 98 - Door panel; 90 - Inner convex column; 91 - Hook groove. Detailed implementation mode

[0025] The following further describes the present utility model in conjunction with the accompanying drawings.

[0026] The hinge with a sliding fork reset structure of the present utility model, as Figures 1 to 7 shown, includes a base assembly 1, a hinge arm 2, a hinge cup 3, a first fixed hinge pin 73, a second fixed hinge pin 74, a drive arm 11 and a swing arm 12. As Figure 5 shown, the base assembly 1 is used for installation on the inner wall of the cabinet panel 99, and the hinge cup 3 is used for embedded installation on the back of the door panel 88. Figure 5 The door panel 88 shown is in the closed state, that is to say, when the door panel 98 is in the closed state, the door panel 98 is substantially parallel to the cabinet panel 99. As Figures 1 to 7 shown, the rear part of the hinge arm 2 is installed on the base assembly 1, the front part of the hinge arm 2 is hinged to one end of the drive arm 11 through the first fixed hinge pin 73, the front part of the hinge arm 2 is hinged to one end of the swing arm 12 through the second fixed hinge pin 74, the corresponding other end of the drive arm 11 and the corresponding other end of the swing arm 12 are respectively hinged to the hinge cup 3, and the second fixed hinge pin 74 is sleeved with a closing drive torsion spring 13. That is to say, the closing drive torsion spring 13 is used to drive the door panel 98 to close itself.

[0027] As Figures 1 to 7As shown, a damper kit 4 is provided inside the hinge arm 2. The damper kit 4 includes a damper mounting shell 41, a sliding fork 42, and a damper 44. The damper mounting shell 41 is positioned and installed on the hinge arm 2. The sliding fork 42 drives the damper 44 to contract. The sliding fork 42 is slidably connected to the damper mounting shell 41 in the front-back direction. Specifically, chutes are respectively formed on the upper and lower sides of the damper mounting shell 41 (the "upper and lower sides" here refer to the hinge in the actual use state). The two fork pieces of the sliding fork 42 are adapted to be slidably connected to the corresponding chutes in the front-back direction. As Figure 8 shown, a hook groove 4210 is formed at the front end of the sliding fork 42. A hook inner edge 4211 is formed inside the hook groove 4210. A hook outer edge 4212 is formed at the front end of the sliding fork 42. The hook outer edge 4212 corresponds to the position of the hook inner edge 4211. So in fact, the hook outer edge 4212 and the hook inner edge 4211 are the two side edges of the hook structure at the front end of the sliding fork 42. As Figure 9 shown, the driving arm 11 is formed with a fork plate portion 111. A buffer pulling convex column 1111 for contacting the hook inner edge 4211 during the door closing process and a reset pushing convex portion 1112 for contacting the hook outer edge 4212 during the door opening process are formed inside the fork plate portion 111. As Figure 6 shown, the damper 44 is provided with a piston rod 441. For example, the rear end of the piston rod 441 is abutted and connected to the inner wall of the rear end of the sliding fork 42.

[0028] The working principle of the hinge of the present invention is briefly described below: Figure 2 And Figure 6 As shown in the hinge of the present invention in the corresponding door opening state, when the door panel 98 is closed by hand, under the vision of Figure 2 , the hinge cup 3 swings clockwise, and the driving arm 11 simultaneously swings counterclockwise around the first fixed hinge pin 73. When the hinge axis of the driving arm 11 and the hinge cup 3 crosses the connection line of the hinge axis of the swing arm 12 and the hinge cup 3 and the second fixed hinge pin 74, the elastic force of the door closing driving torsion spring 13 can drive the hinge cup 3 to continue swinging clockwise. So at this time, when the external force for closing the door panel 98 is removed, the door closing driving torsion spring 13 can also drive the door panel 98 to complete the door closing action. During this process, since the driving arm 11 swings counterclockwise, as Figure 3 Combined with Figure 7 shown, the buffer pulling convex column 1111 pushes the hook inner edge 4211 forward (that is to say, the buffer pulling convex column 1111 pulls the sliding fork 42 forward), and the buffer pulling convex column 1111 slides relatively in the hook groove 4210. As Figure 4As shown, the sliding fork 42 is moved forward, and thus the sliding fork 42 drives the damper 44 to contract, that is to say, the piston rod 441 of the damper 44 retracts into the cylinder body of the damper 44. For example, the inner wall at the rear end of the sliding fork 42 pushes the piston rod 441 forward, causing the piston rod 441 to retract. During the compression of the damper 44, the damper 44 plays a role in damping and buffering the closing of the door. As Figure 5 and Figure 11 shown, when the hinge is in the state corresponding to closing the door, the buffer pulling lug 1111 is located in the hook groove 4210. At this time, the reset pushing protrusion 1112 correspondingly abuts against the outer side of the end of the above-mentioned hook structure. When opening the door, as Figure 5 shown, the door panel 98 is swung counterclockwise by hand, as Figure 12 shown, so that the driving arm 11 swings clockwise, and the buffer pulling lug 1111 will move in the direction of separating from the hook groove 4210, while the reset pushing protrusion 1112 contacts and pushes the outer edge 4212 of the hook backward. As the driving arm 11 swings, the thrust of the reset pushing protrusion 1112 on the outer edge 4212 of the hook gradually increases, causing the sliding fork 42 to be forced to move backward and reset. During the process of the sliding fork 42 moving backward and resetting, since the piston rod 441 of the damper 44 is not hindered by the rear end of the sliding fork 42, the reset spring inside the damper 44 pushes the piston rod 441 backward to extend and reset. Therefore, the hinge of the present utility model has a good reset effect. As Figure 12 shown, when the hinge is in the state corresponding to opening the door, the tangential direction of the swing of the reset pushing protrusion 1112 is substantially parallel to the sliding direction of the sliding fork 42. Therefore, at the end of the opening stroke, the pushing effect of the reset pushing protrusion 1112 on the sliding fork 42 is still in a strong state, which is beneficial to ensuring that the sliding fork 42 can be effectively reset. Moreover, by setting the reset pushing protrusion 1112 to actively and forcibly reset the sliding fork 42, it can maximize the avoidance of jamming of the sliding fork 42 during the reset process, which is beneficial to flexible opening of the door and beneficial to improving the user experience of the hinge. From Figure 11 and Figure 12 it can be seen that during the reciprocating swing of the driving arm 11, in fact, the above-mentioned hook structure is clamped between the buffer pulling lug 1111 and the reset pushing protrusion 1112, so that during the process of opening and closing the door, the effective thrust of the driving arm 11 on the sliding fork 42 respectively has the effect of gradually increasing.

[0029] Furthermore, as Figure 9 and Figure 11 shown, the outer shape of the reset pushing protrusion 1112 is set to be cylindrical. In other words, the cylindrical outer wall of the reset pushing protrusion 1112 contacts the above-mentioned hook structure, and the above-mentioned hook structure can be guided relative to the cylindrical outer wall of the reset pushing protrusion 1112, which is beneficial to reducing the hindrance of the contact and movement between the above-mentioned hook structure and the reset pushing protrusion 1112.

[0030] Further, as Figure 8 shown, a guiding outer rounded corner 4213 for contacting the reset pushing convex portion 1112 is connected to the outer edge of the hook 4212. The guiding outer rounded corner 4213 is formed on the sliding fork 42. That is to say, the guiding outer rounded corner 4213 is located outside the end of the above-mentioned hook structure. Thus, as Figure 11 shown, when the hinge is in the initial stage of opening, the cylindrical outer wall of the reset pushing convex portion 1112 first contacts the guiding outer rounded corner 4213, so that the guiding outer rounded corner 4213 and the reset pushing convex portion 1112 achieve mutual arc guiding, which is beneficial to smooth opening of the door.

[0031] Further, as Figure 9 shown, a back concave pit 1113 is formed on the outer side of the fork plate portion 111. The back concave pit 1113 is located within the corresponding reset pushing convex portion 1112. In other words, the reset pushing convex portion 1112 is correspondingly formed by stamping the back concave pit 1113, thus avoiding the need to weld the reset pushing convex portion 1112 to the inner side of the fork plate portion 111. This is beneficial to the easy manufacturing of the driving arm 11, and makes the reset pushing convex portion 1112 and the fork plate portion 111 integrally arranged, which is beneficial to improving the connection strength between the reset pushing convex portion 1112 and the fork plate portion 111 and avoiding the reset pushing convex portion 1112 from falling off due to impact.

[0032] Further, as mentioned above, the damper 44 is provided with a piston rod 441. As Figure 8 shown, a concave platform 4201 is formed on the inner wall at the rear end of the sliding fork 42. As Figure 6 shown, the rear end of the piston rod 441 is arranged within the concave platform 4201. Since the piston rod 441 is in a cantilever state after extending backward, the setting of the concave platform 4201 limits the rear end of the piston rod 441, avoiding the situation that the piston rod 441 accidentally tilts too much, and thus avoiding easy damage to the damper 44.

Claims

1. A hinge with a sliding fork reset structure, comprising a hinge arm (2), a hinge cup (3), a first fixed hinge pin (73), a second fixed hinge pin (74), a driving arm (11) and a swing arm (12), wherein the front portion of the hinge arm (2) is hinged to one end of the driving arm (11) via the first fixed hinge pin (73), the front portion of the hinge arm (2) is hinged to one end of the swing arm (12) via the second fixed hinge pin (74), the other corresponding end of the driving arm (11) and the other corresponding end of the swing arm (12) are respectively hinged to the hinge cup (3), the second fixed hinge pin (74) is sleeved with a door-closing driving torsion spring (13), and the characteristics are as follows: A damper kit (4) is provided in the hinge arm (2), and the damper kit (4) comprises a damper mounting shell (41), a sliding fork (42) and a damper (44). The sliding fork (42) drives the damper (44) to contract, and the sliding fork (42) is connected to the damper mounting shell (41) in a forward and backward sliding manner relative to the damper mounting shell (41). A hook groove (4210) is formed at the front end of the sliding fork (42), and a hook inner edge (4211) is formed in the hook groove (4210). The front end of the door (42) is formed with a hook outer edge (4212), the hook outer edge (4212) corresponds to the position of the hook inner edge (4211), the driving arm (11) is formed with a fork plate portion (111), and the inner side of the fork plate portion (111) is formed with a buffering pulling protrusion (1111) for contacting the hook inner edge (4211) during the door closing process and a reset pushing protrusion (1112) for contacting the hook outer edge (4212) during the door opening process.

2. The hinge with a sliding fork reset structure according to claim 1, characterized in that: The outer shape of the reset pushing protrusion (1112) is set to be cylindrical.

3. The hinge with a sliding fork reset structure according to claim 2, characterized in that: The hook outer edge (4212) is connected to a guide outer rounded corner (4213) for contacting the reset pushing protrusion (1112), and the guide outer rounded corner (4213) is formed on the sliding fork (42).

4. The hinge with a sliding fork reset structure according to claim 3, characterized in that: A back recess (1113) is formed on the outer side of the fork plate portion (111), and the back recess (1113) is located inside the corresponding reset pushing protrusion (1112).

5. The hinge with a sliding fork reset structure according to any one of claims 1 to 4, characterized in that: The damper (44) is provided with a piston rod (441), a concave platform (4201) is formed on the inner wall of the rear end of the sliding fork (42), and the rear end of the piston rod (441) is arranged in the concave platform (4201).

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