Novel hidden type concealed hinge device

Abstract

According to the novel concealed hinge device, the closed driving mechanism and the sliding seat are arranged in the containing cavity of the arm body in a sunken mode, linkage of the sliding seat and the connecting rod assembly is achieved through the receding opening, and the situation that space is occupied by traditional torsional spring layout is avoided; the overall thickness of the hinge device is greatly reduced, and an ultrathin flat structure is achieved, so that the arm body can be embedded into the inner groove of the side plate of the cabinet body in a hidden mode, and the requirements of high-end home furnishing for concealment and integration are met. Besides, the rocker is matched with an arc-shaped guide structure of the sliding seat, in the cabinet door opening process, the sliding seat pushes the rocker to compress the spring, stable buffering is achieved, the situation that the hinge device is pried and damaged due to rapid opening of the cabinet door is avoided, and meanwhile the spring stores elastic potential energy in advance when the cabinet door is driven to be closed; and during closing, the spring elastically recovers to push the sliding seat to reset to realize automatic closing of the cabinet door, so that a user can close the cabinet door with relatively small force, and the use experience is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of hinge devices, and particularly relates to a novel hidden flush-mounted hinge device. Background Art

[0002] With the development of the home furnishing industry towards high-end and extremely minimalist styles, consumers' requirements for the concealment and aesthetics of furniture wardrobe hardware are increasing day by day. Traditional hinge devices generally adopt an upper and lower stacked layout, and the arm body and base structure protrude 16-20 mm from the surface of the cabinet side plate, which not only occupies the internal space of the cabinet, but also affects the overall aesthetics due to the long strip-shaped raised shape. In addition, the driving mechanism of traditional hinges mostly adopts a torsion spring design, and its layout and force application method make it difficult to compress the thickness of the arm body, and a flattened structure cannot be achieved. Since the torsion spring needs to occupy a large space and combined with the raised structure of its arm body, the arm body of the traditional hinge cannot be embedded in the inner groove of the cabinet side plate in a hidden manner, resulting in obvious exposure after installation and affecting the visual effect. Summary of the Invention

[0003] The purpose of the invention is to overcome the problem that the existing hinge device has a high thickness and cannot achieve a flattened structure to be embedded in the inner groove of the cabinet side plate in a hidden manner, resulting in affecting the visual effect, and to provide a novel hidden flush-mounted hinge device that can achieve a flattened structure and can be embedded in the inner groove of the cabinet side plate in a hidden manner.

[0004] To achieve the above purpose, the invention adopts the following technical solutions:

[0005] A novel hidden flush-mounted hinge device includes a hinge cup, an arm body, a sliding seat and a closing drive mechanism; a connecting rod assembly is linked and connected to one side of the hinge cup; the arm body is provided with a receiving cavity sunken towards the bottom, the receiving cavity is provided with a sliding groove and a first socket seat, an avoidance opening is provided at the outer end of the sliding groove close to the connecting rod assembly, the sliding seat is slidably placed in the sliding groove, and the sliding seat is linked and connected to the connecting rod assembly through the avoidance opening, so that when the hinge cup is opened or closed relative to the arm body, the sliding seat slides relatively along the side close to the avoidance opening or resets towards the inner side of the sliding groove; the closing drive mechanism includes a rocker, a sleeve rod and a spring, one end of the rocker is rotatably connected in the receiving cavity and can swing relatively along the plane direction of the receiving cavity, one end of the sleeve rod is rotatably connected to the other end of the rocker, the other end of the sleeve rod is sleeved in the spring, the other end of the spring is arranged in the first socket seat, an arc-shaped guiding structure is provided on the side of the sliding seat close to the rocker, and the rocker is provided with a guiding part cooperating with the arc-shaped guiding structure, so that when the hinge cup is opened relative to the arm body, the sliding seat pushes the rocker to compress the spring through the arc-shaped guiding structure, and when the hinge cup is closed relative to the arm body, the sliding seat is pushed to reset in place by the elastic recovery of the spring.

[0006] Compared with the prior art, in the novel hidden flush hinge device of the present invention, the arm body adopts a sunken accommodation cavity structure, and the closing drive mechanism and the slide seat are arranged in the accommodation cavity of the arm body in a sunken layout. The linkage between the slide seat and the connecting rod assembly is realized through an avoidance opening, avoiding the occupation of space by the traditional torsion spring layout, greatly reducing the overall thickness of the hinge device and achieving an ultra-thin and flat structure. Thus, the arm body can be embedded in the inner groove of the cabinet side plate in a hidden manner, meeting the requirements of high-end furniture for concealment and integration. In addition, through the cooperation of the arc-shaped guiding structure of the rocker and the slide seat, during the opening process of the cabinet door, the slide seat pushes the rocker to compress the spring, realizing smooth buffering, avoiding the pry damage of the hinge device caused by the rapid opening of the cabinet door, and at the same time enabling the spring to pre-store elastic potential energy for driving the closing of the cabinet door; when closing, the elastic recovery of the spring pushes the slide seat to reset to realize the automatic closing of the cabinet door, ensuring that the user can close the cabinet door with a smaller force and improving the use experience. Moreover, the sliding fit between the chute and the slide seat, the planar swing design of the rocker, and the axial force application mode of the spring all optimize the mechanical loss problem of the traditional hinge, extend the service life, and have strong structural reliability.

[0007] Further, it further includes a buffer push rod arranged in the accommodation cavity. The buffer push rod is arranged on one side of the reset direction of the slide seat. When the slide seat is relatively reset, it abuts against the output rod of the buffer push rod. The elastic coefficient of the spring is greater than that of the buffer push rod; by such setting, during the reset process of the slide seat, the buffer push rod can further absorb the remaining kinetic energy, avoid rigid collision when the slide seat is quickly reset, reduce the impact noise when the cabinet door is closed, have good buffer performance when the cabinet door is closed, make the hinge quieter and smoother during the closing process, and improve the overall service life, meeting the strict requirements of high-end furniture for silence and durability.

[0008] Further, the connecting rod assembly includes a first connecting rod and a second connecting rod. The two ends of the first connecting rod are respectively rotatably connected to the hinge cup and the arm body. The two ends of the second connecting rod are also respectively rotatably connected to the hinge cup and the arm body. The hinge cup, the first connecting rod, the arm body, and the second connecting rod form a four-bar linkage mechanism. A transfer seat is arranged in the middle of the second connecting rod. The outer end of the slide seat is rotatably connected to a transmission arm, and the outer end of the transmission arm is rotatably connected to the transfer seat; by such setting, a four-bar linkage mechanism is formed by the hinge cup, the first connecting rod, the arm body, and the second connecting rod, making the movement trajectory during the opening and closing of the cabinet door more precisely controllable, avoiding the jamming or offset problems caused by single-point force in the traditional hinge, and improving the use fluency. In addition, the transmission arm links the sliding movement of the slide seat and the rotational movement of the second connecting rod, ensuring that the sliding of the slide seat in the accommodation cavity is highly synchronized with the opening and closing actions of the hinge device, reducing redundant movement, and further compressing the internal space of the hinge device.

[0009] Further, a sliding avoidance groove is provided on one side of the sliding seat close to the rocker. The arc-shaped guiding structure includes an inclined surface portion provided on the rear side wall of the sliding avoidance groove and a flat surface portion provided behind the sliding seat on the side close to the rocker. The flat surface portion and the inclined surface portion are connected by an arc transition. The guiding portion is a bent structure provided outside the rocker. When the hinge cup is opened relative to the arm body, the sliding seat slides through the guide and pushes the guiding portion of the rocker to slide from the inclined surface portion to the flat surface portion, so that the rocker compresses the spring. When the hinge cup is closed relative to the arm body, the sliding seat slides through the guide and cooperates with the elastic recovery of the spring to drive the guiding portion of the rocker to slide from the flat surface portion to the inclined surface portion, so as to push the sliding seat to reset in place under the elastic recovery of the spring; by such a setting, during the opening process of the cabinet door, the inclined surface portion guides the guiding portion of the rocker to gradually slide towards the flat surface portion, and the spring compression force increases linearly, so that the cabinet door opens slowly. During the closing process, the reverse sliding path of the guiding portion sliding from the flat surface portion to the inclined surface portion cooperates with the release of the spring to achieve a reset rhythm of fast first and then slow. Finally, the buffer push rod absorbs the residual kinetic energy to eliminate the impact sound.

[0010] Further, a second socket seat is provided at the rear side of the sliding seat in the accommodating cavity. A second socket hole is provided in the second socket seat. The cylinder body of the buffer push rod is placed in the second socket hole. A first socket hole is provided on one side of the first socket seat close to the sleeve rod. The other end of the spring is placed in the first socket hole; the accommodating cavity is rectangular. The sliding groove is arranged at the bottom edge position close to the avoidance opening in the accommodating cavity and along the length direction of the bottom edge. The first socket seat is arranged at the corner position of the top edge close to the avoidance opening, and the first socket hole of the first socket seat is inclined towards the sliding seat side. The second socket seat is arranged at the bottom edge position far from the avoidance opening in the accommodating cavity and along the length direction of the bottom edge; by such a setting, the sliding groove, the first socket seat and the second socket seat are arranged in the rectangular accommodating cavity 11 with a specific spatial relationship, realizing the extreme compactness of the hinge structure and the significant improvement of the mechanical performance. Among them, the arrangement of the sliding groove along the bottom edge and the inclined design of the top edge corner of the first socket seat form a space diagonal layout, so that the spring force application direction is highly matched with the rocker movement track, reducing both the lateral component force and compressing the overall thickness; the second socket seat is located at the opposite bottom edge and cooperates with the buffer push rod to form a long force arm buffer system, providing a secondary buffer at the end of the sliding seat reset to effectively eliminate the impact noise.

[0011] Further, an installation groove arranged along the length direction is provided at the bottom of the sliding seat. A sliding member is arranged in the installation groove. The sliding seat contacts the bottom wall of the accommodating cavity through the sliding member. The sliding seat is made of plastic material, and the sliding member is made of metal material. First transfer portions extending upward are arranged on both sides of the sliding member. First rotation holes are provided in the first transfer portions. A rotation connection port is provided on the front side of the sliding seat. Through holes serving as second rotation holes are provided in the two side walls of the rotation connection port. The installation groove is adapted to the shape of the sliding member. When the sliding member is arranged in the installation groove, the first rotation holes and the second rotation holes are correspondingly arranged. One end of the transmission arm is arranged in the rotation connection port and is rotationally connected to the first rotation hole and the second rotation hole respectively through a rotating shaft. A positioning groove arranged vertically is provided at the rear side of the sliding seat. A positioning block arranged vertically is provided at the rear end of the sliding member. When the sliding member is arranged in the installation groove, the positioning block is placed in the positioning groove. With such an arrangement, by covering and arranging the sliding member made of metal material at the bottom of the plastic sliding seat, while ensuring the overall strength of the sliding seat, the sliding between the sliding seat and the sliding groove of the arm body is a frictional movement between plastic and metal, which is beneficial to reducing the friction coefficient of the sliding of the slider, eliminating the noise generated by the sliding of the sliding seat, and at the same time making the contact between the rocker and the sliding seat also a friction between metal and plastic, and similarly eliminating the noise generated by the friction between the rocker and the sliding seat.

[0012] Further, an installation seat and a fixing seat are further included. The fixing seat is used for being pre-assembled on the cabinet door. The arm body is fixed on the fixing seat through the installation seat. First connection edges extending outward are respectively arranged on both sides of the fixing seat. The two first connection edges are connected through a connection arm. A plurality of first connection holes are arranged along the length direction of the first connection edge. The fixing seat is fixed on the side plate of the cabinet body through the first connection holes and first screws. The installation seat is installed on the fixing seat through a first fastener. Second blocking edges extending outward are respectively arranged at both upper ends of the installation seat. A receiving hole for receiving the first screw is provided in the second blocking edge corresponding to each first connection hole. The installation seat is provided with a sliding installation cavity with a front opening. A sliding guide groove with a front opening is provided at the bottom of the sliding installation cavity. A guide block cooperating with the sliding guide groove is provided at the bottom of the arm body. The arm body is guided and assembled in the sliding installation cavity through the sliding cooperation between the guide block and the sliding guide groove. The arm body is fixed on the installation seat through a second fastener. With such an arrangement, the rapid installation and precise adjustment of the hinge device are preferably realized. The fixing seat provides flexible installation and positioning options through a plurality of first connection holes on the two first connection edges on both sides. The installation seat realizes the stepless sliding adjustment of the arm body through the cooperation of the sliding installation cavity and the guide groove, and is fixed through the second fastener. This double fixing structure not only ensures the installation firmness but also simplifies the installation process. At the same time, the design of the receiving holes on the installation seat avoids the interference with the screws of the fixing seat, making the overall structure more compact, and is especially suitable for the installation requirements of high-end cabinet bodies that require precise adjustment of the cabinet door position.

[0013] Furthermore, it further includes a decorative cover. The decorative cover is provided with a receiving cavity that is open at the front side and the bottom. The decorative cover is provided with slide rail grooves arranged along the length direction on both side edges. The inner side and the front side of the slide rail grooves are open. The outer side of the second retaining edge is slidably assembled with the slide rail grooves so that the decorative cover covers the outer sides of the arm body, the mounting base, and the fixing base. With this arrangement, by adding a decorative cover with slide rail grooves, the hinge device can quickly cover the outer sides of the arm body, the mounting base, and the fixing base through a sliding assembly method after installation. This not only effectively hides the internal mechanical structure and improves the overall aesthetics, but also the design of the slide rail grooves facilitates the disassembly and maintenance of the decorative cover, taking into account both practicality and decorativeness.

[0014] Furthermore, the outer periphery of the hinge cup is provided with a second connecting edge. A plurality of second connecting holes are arranged on the second connecting edge. The plurality of second connecting holes are connected to the cabinet door through second screws so that the hinge cup is fixed on the cabinet door; the bottom surface of the second connecting edge is provided with anti-slip lines. By providing a second connecting edge with anti-slip lines and a plurality of second connecting holes on the outer periphery of the hinge cup, the stability of the connection between the hinge cup and the cabinet door and the installation convenience are significantly improved. Among them, the multi-hole design provides a flexible installation adjustment space, and the anti-slip lines effectively prevent displacement and sliding during installation and use, ensuring that the hinge does not loosen during long-term use. This structure not only enhances the reliability of the overall structure but also simplifies the installation process. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the installation of the new type of concealed flush hinge device on the cabinet door and the cabinet body.

[0016] Figure 2 It is a schematic diagram of the separated state of the new type of concealed flush hinge device from the cabinet door and the cabinet body.

[0017] Figure 3 It is a schematic diagram of the separated state of the decorative cover of the new type of concealed flush hinge device.

[0018] Figure 4 It is an exploded view of the structure of the new type of concealed flush hinge device.

[0019] Figure 5 It is a schematic diagram of the open state of the hinge cup relative to the arm body.

[0020] Figure 6 It is a schematic diagram of the closed state of the hinge cup relative to the arm body.

[0021] Figure 7 It is an exploded view of the arm body and the hinge cup.

[0022] Figure 8 It is a schematic diagram of the mounting base, the arm body, and the hinge cup.

[0023] Figure 9It is an exploded view of the sliding seat and the arm body.

[0024] Figure 10 It is an exploded view of the sliding seat.

[0025] Label description: cabinet door 51, cabinet body 52, hinge cup 2, arm body 1, closing drive mechanism 3, connecting rod assembly 4, accommodating cavity 11, sliding groove 19, first socket 12, avoidance opening 13, sliding seat 14, rocker 31, sleeve rod 32, spring 33, guiding part 34, buffer push rod 15, first connecting rod 41, second connecting rod 42, adapter seat 43, transmission arm 44, sliding avoidance groove 141, inclined surface part 142, flat surface part 143, second socket 151, second socket hole 152, first socket hole 121, installation groove 144, sliding part 16, first adapter part 161, first rotation hole 162, rotation connection port 145, second rotation hole 146, rotating shaft 147, positioning groove 148, positioning block 163, mounting seat 5, fixed seat 6, first connection edge 61, first connection hole 62, first screw 63, first fastener 52, second stop edge 51, receiving hole 53, receiving groove 54, connecting arm 64, first fastening hole 521, sliding installation cavity 55, sliding guiding groove 56, second fastener 57, second fastening hole 571, guiding block 17, decorative cover 18, receiving cavity 181, slide rail groove 182, second connection edge 21, second connection hole 22, anti-slip pattern 23, second screw 24, groove 511, inner groove 521. Detailed implementation manner

[0026] The following describes the detailed implementation manner of the present invention with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] See Figures 1 to 10, the novel concealed hinge device of the present invention includes a hinge cup 2 for being installed in a groove 511 of a cabinet door 51, an arm body 1 for being installed in an inner groove 521 on a side plate of a cabinet body 52, a sliding seat 14, and a closing driving mechanism 3; a connecting rod assembly 4 is linked and connected to one side of the hinge cup 2; the arm body 1 is provided with a receiving cavity 11 sunken towards the bottom, the receiving cavity 11 is provided with a sliding groove 19 and a first socket 12, an avoidance opening 13 is provided at an outer end of the sliding groove 19 close to the connecting rod assembly 4, the sliding seat 14 is slidably placed in the sliding groove 19, and the sliding seat 14 is linked and connected to the connecting rod assembly 4 through the avoidance opening 13, so that when the hinge cup 2 is opened or closed relative to the arm body 1, the sliding seat 14 slides relatively along one side close to the avoidance opening 13 or resets towards the inner side of the sliding groove 19; the closing driving mechanism 3 includes a rocker 31, a sleeve rod 32, and a spring 33, one end of the rocker 31 is rotatably connected in the receiving cavity 11 and can swing relatively in a plane direction of the receiving cavity 11, one end of the sleeve rod 32 is rotatably connected to the other end of the rocker 31, the other end of the sleeve rod 32 is sleeved in the spring 33 and the first socket 12, the other end of the spring 33 is arranged in the first socket 12, an arc-shaped guiding structure is provided on one side of the sliding seat 14 close to the rocker 31, and the rocker 31 is provided with a guiding portion 34 cooperating with the arc-shaped guiding structure, so that when the hinge cup 2 is opened relative to the arm body 1, the sliding seat 14 pushes the rocker 31 to compress the spring 33 through the arc-shaped guiding structure, and during the process of closing the hinge cup 2 relative to the arm body 1, the elastic recovery of the spring 33 pushes the sliding seat 14 to reset in place.

[0028] Compared with the prior art, for the novel concealed hinge device of the present invention, the arm body 1 adopts a sunken receiving cavity 11 structure, and the closing driving mechanism 3 and the sliding seat 14 are arranged in a sunken layout in the receiving cavity 11 of the arm body 1, and the linkage between the sliding seat 14 and the connecting rod assembly 4 is realized through the avoidance opening 13, avoiding the occupation of space by the traditional torsion spring layout, greatly compressing the overall thickness of the hinge device and realizing an ultra-thin and flattened structure, so that the arm body 1 can be embedded in the inner groove 521 on the side of the cabinet body 52 in a hidden manner, meeting the requirements of high-end furniture for concealment and integration. In addition, through the cooperation of the arc-shaped guiding structure of the rocker 31 and the sliding seat 14, during the opening process of the cabinet door 51, the sliding seat 14 pushes the rocker 31 to compress the spring 33, realizing smooth buffering, avoiding the hinge device being pried and damaged due to the rapid opening of the cabinet door 51, and at the same time enabling the spring 33 to pre-store elastic potential energy for driving the cabinet door to close; when closing, the elastic recovery of the spring 33 pushes the sliding seat 14 to reset to realize the automatic closing of the cabinet door 51, ensuring that the user can close the cabinet door 51 with a smaller force and improving the use experience. Moreover, the sliding fit between the sliding groove 19 and the sliding seat 14, the planar swing design of the rocker 31, and the axial force application mode of the spring 33 all optimize the mechanical loss problem of the traditional hinge, extend the service life, and have strong structural reliability.

[0029] See Figures 2 to 7, in one embodiment, it further includes a buffer push rod 15 disposed in the accommodation cavity 11. The buffer push rod 15 is disposed on one side of the reset direction of the slide seat 14. When the slide seat 14 is reset relatively, it abuts against the output rod of the buffer push rod 15. The elastic coefficient of the spring 33 is greater than that of the buffer push rod 15. With such a setting, during the reset process of the slide seat 14, the buffer push rod 15 can further absorb the remaining kinetic energy, avoid rigid collision when the slide seat 14 is reset quickly, reduce the impact noise when the cabinet door 51 is closed, and the buffer performance of the cabinet door 51 is good, making the hinge quieter and more stable during the closing process, and improving the overall service life, meeting the strict requirements of high-end furniture for silence and durability.

[0030] See Figures 2 to 7 , in one embodiment, the link assembly 4 includes a first link 41 and a second link 42. The two ends of the first link 41 are respectively rotatably connected to the hinge cup 2 and the arm body 1. The two ends of the second link 42 are also respectively rotatably connected to the hinge cup 2 and the arm body 1. The hinge cup 2, the first link 41, the arm body 1 and the second link 42 form a four-bar mechanism. A transfer seat 43 is provided in the middle of the second link 42. The outer end of the slide seat 14 is rotatably connected to a transmission arm 44. The outer end of the transmission arm 44 is rotatably connected to the transfer seat 43. With such a setting, a four-bar mechanism is formed by the hinge cup 2, the first link 41, the arm body 1 and the second link 42, making the movement track during the opening and closing of the cabinet door 51 more precisely controllable, avoiding the jamming or offset problems caused by single-point force in traditional hinges, and improving the use fluency. In addition, the transmission arm 44 links the sliding movement of the slide seat 14 with the rotational movement of the second link 42, ensuring that the sliding of the slide seat 14 in the accommodation cavity 11 is highly synchronized with the opening and closing actions of the hinge device, reducing redundant movement, and further compressing the internal space of the hinge device.

[0031] See Figures 2 to 7, in one embodiment, a sliding avoidance groove 141 is provided on one side of the sliding seat 14 close to the rocker 31. The arc-shaped guiding structure includes an inclined surface portion 142 provided on the rear side wall of the sliding avoidance groove 141 and a flat surface portion 143 provided behind the sliding seat 14 on the side close to the rocker 31. The flat surface portion 143 and the inclined surface portion 142 are connected by an arc transition. The guiding portion 34 is a bent structure provided outside the rocker 31. When the hinge cup 2 is opened relative to the arm body 1, the sliding seat 14 slides through the guide and pushes the guiding portion 34 of the rocker 31 to slide from the inclined surface portion 142 to the flat surface portion 143, so that the rocker 31 compresses the spring 33. When the guiding portion 34 of the rocker 31 is located on the flat surface portion 143, the acting force of the spring 33 elastically resetting and driving the guiding portion 34 forms a perpendicular relationship with the flat surface portion 143, thereby forming a locked state for the rocker 31. When the hinge cup 2 is closed relative to the arm body 1, the sliding seat 14 slides through the guide and cooperates with the elastic recovery of the spring 33 to drive the guiding portion 34 of the rocker 31 to slide from the flat surface portion 143 to the inclined surface portion 142, realizing the reset of the sliding seat 14 in place under the elastic recovery of the spring 33. By such a setting, during the opening process of the cabinet door 51, the inclined surface portion 142 guides the guiding portion 34 of the rocker 31 to gradually slide towards the flat surface portion 143, and the compression force of the spring 33 increases linearly, so that the cabinet door 51 is slowly opened. During the closing process, the reverse sliding path of the guiding portion 34 sliding from the flat surface portion 143 to the inclined surface portion 142 cooperates with the release of the spring 33 to realize a reset rhythm of fast first and then slow. Finally, the buffer push rod 15 absorbs the residual kinetic energy to eliminate the impact sound.

[0032] See Figures 2 to 7, in one embodiment, a second socket 151 is provided at the rear side of the receiving cavity 11 of the sliding seat 14. A second socket hole 152 is provided in the second socket 151. The cylinder body of the buffer push rod 15 is placed in the second socket hole 152. A first socket hole 121 is provided on one side of the first socket 12 close to the sleeve rod 32. The other end of the spring 33 is placed in the first socket hole 121. The receiving cavity 11 is rectangular. The sliding groove 19 is provided at the bottom edge position of the receiving cavity 11 close to the avoidance opening 13 and is arranged along the length direction of the bottom edge. The first socket 12 is provided at the corner position of the top edge close to the avoidance opening 13, and the first socket hole 121 of the first socket 12 is arranged obliquely towards the sliding seat 14. The second socket 151 is provided at the bottom edge position of the receiving cavity 11 away from the avoidance opening 13 and is arranged along the length direction of the bottom edge. By such an arrangement, the sliding groove 19, the first socket 12 and the second socket 151 are arranged in the rectangular receiving cavity 11 with a specific spatial relationship, achieving the extreme compactness of the hinge structure and the significant improvement of the mechanical performance. Among them, the arrangement of the sliding groove 19 along the bottom edge and the inclined design of the top edge corner of the first socket 12 form a spatial diagonal layout, making the force direction of the spring 33 highly match the movement track of the rocker 31, reducing both the lateral component force and compressing the overall thickness. The second socket 151 is located at the opposite bottom edge and cooperates with the buffer push rod 15 to form a long force arm buffer system, providing secondary buffering at the end of the reset of the sliding seat 14 and effectively eliminating the impact noise.

[0033] See Figures 2 to 10, in one embodiment, an installation groove 144 arranged along the length direction is provided at the bottom of the slide base 14. A sliding member 16 is disposed in the installation groove 144. The slide base 14 contacts the bottom wall of the accommodation cavity 11 through the sliding member 16. The slide base 14 is made of a plastic material, and the sliding member 16 is made of a metal material. First transfer portions 161 extending upward are provided on both sides of the sliding member 16. First rotation holes 162 are provided in the first transfer portions 161. A rotation connection port 145 is provided on the front side of the slide base 14. Through holes 146 are provided on both side walls of the rotation connection port 145. The installation groove 144 is adapted to the shape of the sliding member 16. When the sliding member 16 is placed in the installation groove 144, the first rotation holes 162 and the through holes 146 are respectively arranged in correspondence. One end of the transmission arm 44 is placed in the rotation connection port 145 and is rotationally connected to the first rotation hole 162 and the through hole 146 respectively through a rotating shaft 147. A vertically arranged positioning groove 148 is provided on the rear side of the slide base 14. A vertically arranged positioning block 163 is provided at the rear end of the sliding member 16. When the sliding member 16 is placed in the installation groove 144, the positioning block 163 is placed in the positioning groove 148. By such an arrangement, by covering and arranging the sliding member 16 made of a metal material at the bottom of the plastic slide base 14, while ensuring the overall strength of the slide base 14, the friction movement between the slide base 14 and the chute 19 of the arm body 1 is between plastic and metal, which is beneficial to reducing the friction coefficient of the slider sliding, eliminating the noise generated by the sliding of the slide base 14, and at the same time making the contact between the rocker 31 and the slide base 14 also the friction between metal and plastic, and similarly eliminating the noise generated by the friction between the rocker 31 and the slide base 14.

[0034] See Figures 2 to 10 , in one embodiment, an installation base 5 and a fixing base 6 are further included. The fixing base 6 is used for being pre-assembled in the inner groove 521 of the side plate of the cabinet 52. The arm body 1 is fixed on the fixing base 6 through the installation base 5. First connection edges 61 extending outward are respectively provided on both sides of the fixing base 6. The two first connection edges 61 are connected through a connection arm 64. The installation base 5 is provided with a receiving groove 54 for avoiding and cooperating with the connection arm 64. A plurality of first connection holes 62 are arranged along the length direction of the first connection edge 61. The fixing base 6 is fixed on the side plate of the cabinet 52 by connecting the plurality of first connection holes 62 to the side plate of the cabinet 52 through first screws 63.

[0035] The installation base 5 is installed on the fixing base 6 through a first fastener 52. First fastening holes 521 are respectively provided on the installation base 5 and the fixing base 6. The first fastener 52 is connected to the two first fastening holes 521 to realize the connection between the installation base 5 and the fixing base 6. Second retaining edges 51 extending outward are respectively provided on both sides of the upper end of the installation base 5. The second retaining edges 51 are respectively provided with receiving holes 53 for receiving the first screws 63 corresponding to each first connection hole 62.

[0036] The mounting base 5 is provided with a sliding mounting cavity 55 with an opening at the front side. The bottom of the sliding mounting cavity 55 is provided with a sliding guide groove 56 with an opening at the front side. The bottom of the arm body 1 is provided with a guide block 17 that cooperates with the sliding guide groove 56. The arm body 1 is guidingly assembled in the sliding mounting cavity 55 through the sliding cooperation between the guide block 17 and the sliding guide groove 56. The arm body 1 is fixed to the mounting base 5 by a second fastener 57. The mounting base 5 and the arm body 1 are respectively provided with second fastening holes 571. The second fastener 57 is connected to the two second fastening holes 571 to realize the connection between the mounting base 5 and the arm body 1. With such a setting, the rapid installation and precise adjustment of the hinge device are better realized. Among them, the fixed seat 6 provides flexible installation and positioning options through a plurality of first connection holes 62 on the two first connection edges 61. The mounting base 5 realizes the stepless sliding adjustment of the arm body 1 through the cooperation of the sliding mounting cavity 55 and the sliding guide groove 56, and is then fixed by the second fastener 57. This double-fixed structure not only ensures the installation firmness but also simplifies the installation process. At the same time, the design of the receiving hole 53 on the mounting base 5 avoids interference with the screws of the fixed seat 6, making the overall structure more compact, which is especially suitable for the installation requirements of high-end cabinets 52 that require precise adjustment of the position of the cabinet door 51.

[0037] See Figures 2 to 10 , in an embodiment, it further includes a decorative cover 18. The decorative cover 18 is provided with a receiving cavity 181 with openings at the front side and the bottom. The decorative cover 18 is provided with slide rail grooves 182 arranged along the length direction at both side edges. The inner side and the front side of the slide rail grooves 182 are open. The outer side of the second retaining edge 51 is slidably assembled with the slide rail grooves 182 so that the decorative cover 18 covers the outer sides of the arm body 1, the mounting base 5, and the fixed seat 6. With such a setting, by adding a decorative cover 18 with slide rail grooves 182, the hinge device can quickly cover the outer sides of the arm body 1, the mounting base 5, and the fixed seat 6 through a sliding assembly method after installation, which not only effectively hides the internal mechanical structure and improves the overall aesthetics, but also the design of the slide rail grooves 182 facilitates the disassembly and maintenance of the decorative cover 18, taking into account both practicality and decoration.

[0038] See Figures 2 to 10, in one embodiment, a second connecting edge 21 is provided on the outer periphery of the hinge cup 2, and a plurality of second connecting holes 22 are arranged on the second connecting edge 21. The plurality of second connecting holes 22 are connected to the cabinet door 51 by second screws 24 to fix the hinge cup 2 in the groove 511 of the cabinet door 51; an anti-slip pattern 23 is provided on the bottom surface of the second connecting edge 21. By providing the second connecting edge 21 with the anti-slip pattern 23 and a plurality of second connecting holes 22 on the outer periphery of the hinge cup 2, the stability of the connection between the hinge cup 2 and the cabinet door 51 and the installation convenience are significantly improved. Among them, the multi-hole design provides a flexible installation adjustment space, and the anti-slip pattern 23 effectively prevents displacement and sliding during installation and use, ensuring that the hinge does not loosen during long-term use. This structure not only enhances the reliability of the overall structure but also simplifies the installation process.

[0039] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A new type of concealed hinge device, characterized in that, Comprising: A hinge cup, with a connecting rod assembly linked on one side; An arm body, provided with a receiving cavity sunken towards the bottom, a sliding groove and a first socket seat are arranged in the receiving cavity, and an avoidance opening is arranged at the outer end of the sliding groove close to the connecting rod assembly; A sliding seat, slidably placed in the sliding groove, and the sliding seat is linked with the connecting rod assembly through the avoidance opening, so that when the hinge cup is opened or closed relative to the arm body, the sliding seat slides relatively along the side close to the avoidance opening or resets towards the inner side of the sliding groove; A closing driving mechanism, including a rocker, a sleeve rod and a spring, one end of the rocker is rotatably connected in the receiving cavity and can swing relatively along the plane direction of the receiving cavity, one end of the sleeve rod is rotatably connected with the other end of the rocker, the other end of the sleeve rod is sleeved in the spring, the other end of the spring is arranged in the first socket seat, an arc-shaped guiding structure is arranged on the side of the sliding seat close to the rocker, and the rocker is provided with a guiding part matched with the arc-shaped guiding structure, so that when the hinge cup is opened relative to the arm body, the sliding seat pushes the rocker to compress the spring through the arc-shaped guiding structure, and when the hinge cup is closed relative to the arm body, the sliding seat is pushed to reset in place by the elastic recovery of the spring.

2. The novel concealed flush hinge device according to claim 1, wherein It further includes a buffer push rod arranged in the receiving cavity, the buffer push rod is arranged on one side of the reset direction of the sliding seat, when the sliding seat relatively resets, it abuts against the output rod of the buffer push rod, and the elastic coefficient of the spring is greater than that of the buffer push rod.

3. The novel concealed flush hinge device according to claim 1, wherein The connecting rod assembly includes a first connecting rod and a second connecting rod, both ends of the first connecting rod are respectively rotatably connected with the hinge cup and the arm body, both ends of the second connecting rod are also respectively rotatably connected with the hinge cup and the arm body, the hinge cup, the first connecting rod, the arm body and the second connecting rod form a four-bar mechanism, a transfer seat is arranged in the middle of the second connecting rod, the outer end of the sliding seat is rotatably connected with a transmission arm, and the outer end of the transmission arm is rotatably connected with the transfer seat.

4. The novel concealed flush hinge device according to claim 1, characterized in that, A sliding avoidance groove is arranged on the side of the sliding seat close to the rocker, the arc-shaped guiding structure includes an inclined surface part arranged on the rear side wall of the sliding avoidance groove and a flat surface part arranged at the rear of the side of the sliding seat close to the rocker, and the flat surface part and the inclined surface part are connected by an arc transition, the guiding part is a bent structure arranged on the outer side of the rocker, when the hinge cup is opened relative to the arm body, the sliding seat slides through the guide and pushes the guiding part of the rocker to slide from the inclined surface part to the flat surface part, so that the rocker compresses the spring, when the hinge cup is closed relative to the arm body, the sliding seat slides through the guide and cooperates with the elastic recovery of the spring, driving the guiding part of the rocker to slide from the flat surface part to the inclined surface part, so as to push the sliding seat to reset in place under the elastic recovery of the spring.

5. The novel concealed flush hinge device according to claim 2, wherein A second socket seat is arranged at the rear side of the receiving cavity where the sliding seat is located, a second socket hole is arranged in the second socket seat, the cylinder body of the buffer push rod is placed in the second socket hole, a first socket hole is arranged on the side of the first socket seat close to the sleeve rod, and the other end of the spring is placed in the first socket hole.

6. The novel concealed flush hinge device according to claim 1, characterized in that, An installation groove is arranged along the length direction at the bottom of the sliding seat, a sliding part is arranged in the installation groove, the sliding seat contacts with the bottom wall of the receiving cavity through the sliding part, the sliding seat is made of plastic material, and the sliding part is made of metal material.

7. The novel concealed flush hinge device according to claim 6, wherein, On both sides of the sliding member, there are first transfer portions extending upward. The first transfer portions are provided with first rotation holes. On the front side of the sliding seat, there is a rotation connection port. On both side walls of the rotation connection port, there are through second rotation holes. The installation groove is adapted to the shape of the sliding member. When the sliding member is placed in the installation groove, the first rotation holes and the second rotation holes are respectively arranged in correspondence. One end of the transmission arm is placed in the rotation connection port and is rotationally connected to the first rotation hole and the second rotation hole respectively through a rotating shaft; On the rear side of the sliding seat, there is a vertically arranged positioning groove. At the rear end of the sliding member, there is a vertically arranged positioning block. When the sliding member is placed in the installation groove, the positioning block is placed in the positioning groove.

8. The novel concealed flush hinge device according to claim 1, characterized in that, It further includes a mounting seat and a fixing seat. The fixing seat is used for being assembled on the side plate of the cabinet body. The arm body is fixed on the fixing seat through the mounting seat; On both sides of the fixing seat, there are first connection edges extending outward respectively. The two first connection edges are connected by a connection arm. A plurality of first connection holes are arranged along the length direction of the first connection edge. The plurality of first connection holes are connected to the side plate of the cabinet body through first screws to fix the fixing seat on the side plate of the cabinet body; The mounting seat is installed on the fixing seat through a first fastener. On both sides of the upper end of the mounting seat, there are second blocking edges extending outward respectively. Each second blocking edge is provided with a receiving hole for receiving a first screw corresponding to each first connection hole; The mounting seat is provided with a sliding installation cavity with a front opening. At the bottom of the sliding installation cavity, there is a sliding guide groove with a front opening. At the bottom of the arm body, there is a guide block cooperating with the sliding guide groove. The arm body is guided and assembled in the sliding installation cavity through the sliding cooperation between the guide block and the sliding guide groove. The arm body is fixed on the mounting seat through a second fastener.

9. The novel concealed flush hinge device according to claim 8, wherein, It further includes a decorative cover. The decorative cover is provided with a receiving cavity with front and bottom openings. The decorative cover is provided with slide rail grooves arranged along the length direction at both side edges. The inner side and the front side of the slide rail groove are open. The outer side of the second blocking edge is slidably assembled with the slide rail groove so that the decorative cover covers the outer sides of the arm body, the mounting seat and the fixing seat.

10. The novel concealed flush hinge device according to claim 1, characterized in that, The outer periphery of the hinge cup is provided with a second connection edge. A plurality of second connection holes are arranged on the second connection edge. The plurality of second connection holes are connected to the cabinet door through second screws to fix the hinge cup on the cabinet door; The bottom surface of the second connection edge is provided with anti-slip lines.

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