Arm body, hinge arm assembly and hinge device

Abstract

The utility model belongs to the technical field of hinge devices, and particularly relates to an arm body, a hinge arm assembly and a hinge device. According to the arm body, the sliding area, the driving area and the buffering area are integrated in the arm body through the design of the sinking type containing cavity, and the receding opening structure is matched, so that the overall thickness of the hinge device is greatly reduced, the hinge device can be completely embedded into an inner groove of a side plate of a cabinet body, the thickness of the hinge device is greatly reduced, and the hinge device is attached to the cabinet body in an approximately flat mode; the aesthetic property and the space utilization rate are obviously improved. Besides, the accommodating cavity adopts a modular partition design and specifically comprises a sliding area and a driving area which are adjacent and a buffering area which is arranged at the rear, so that a driving force transmission path is optimized, redundant space occupation of a traditional torsional spring is replaced, opening and closing smoothness is ensured, the thickness limitation of an arm body is broken through through compact layout, and an ultrathin flat structure is achieved; in addition, movement interference is avoided through the front side of the receding opening, opening and closing impact of the hinge device is effectively absorbed through the rear buffer area, and the requirement of home furnishing for concealment is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of hinge devices, specifically relating to the arm body, hinge arm assembly and hinge device. Background Technology

[0002] As the home furnishing industry moves towards high-end and minimalist styles, consumers are increasingly demanding more discreet and aesthetically pleasing hardware for furniture and wardrobes. Traditional hinge devices generally employ a stacked layout, with the hinge arm and base protruding 16-20mm from the cabinet side panel surface. This not only occupies cabinet space but also detracts from the overall aesthetics due to its elongated, raised shape. Furthermore, the drive mechanism of traditional hinge devices often uses a torsion spring design, whose layout and force distribution make it difficult to compress the hinge arm thickness, preventing the achievement of a flattened structure. Because torsion springs require significant space, combined with the raised arm structure, traditional hinge arms cannot be concealed within the inner groove of the cabinet side panel, resulting in noticeable exposure after installation and affecting the visual appeal. Utility Model Content

[0003] The purpose of this utility model is to overcome the problem that the existing hinge arm assembly of the hinge device is too thick to achieve a flat structure and be hidden in the inner groove of the cabinet side panel, thus affecting the visual effect. The present invention provides an arm body, hinge arm assembly and hinge device that can achieve a flat structure and be hidden in the inner groove of the cabinet side panel.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The arm body has a recessed cavity that sinks to the bottom. The cavity contains a sliding area, a driving area, and a buffer zone. The sliding area and the driving area are arranged adjacent to each other. The buffer zone is located behind the sliding area. The arm body has an avoidance opening on the front side of the sliding area.

[0006] Compared with existing technologies, the hinge body of this utility model integrates the sliding area, driving area, and buffer zone within the arm body through a sunken accommodating cavity design. Combined with an avoidance structure, this significantly reduces the overall thickness of the hinge device, allowing it to be completely embedded in the inner groove of the cabinet side panel. This drastically reduces the thickness of the hinge device, achieving a near-flat fit with the cabinet, significantly improving aesthetics and space utilization. Furthermore, the accommodating cavity adopts a modular partitioned design, specifically including adjacent sliding and driving areas and a rear-positioned buffer zone. This optimizes the driving force transmission path, replacing the redundant space occupied by traditional torsion springs. This ensures smooth opening and closing while overcoming the arm body thickness limitations through a compact layout, achieving an ultra-thin and flat structure. Additionally, the avoidance opening at the front prevents movement interference, and the rear-positioned buffer zone effectively absorbs the impact of hinge opening and closing, simplifying the appearance while ensuring durability, meeting the comprehensive needs of high-end homes for concealment, minimalist aesthetics, and practicality.

[0007] Furthermore, the sliding area is provided with a sliding groove, the driving area is provided with a first socket, the buffer zone is provided with a second socket, and the arm body is provided with a hinge seat on the side near the clearance opening.

[0008] The hinge arm assembly includes the arm body, a slide block, and a closing drive mechanism. A sliding groove is provided in the sliding area, and a first socket is provided in the drive area. The slide block is slidably placed within the sliding groove, and a transmission arm is rotatably connected to its outer end. The transmission arm is linked to the linkage assembly of the hinge device through a clearance opening, so that when the arm body is relatively opened or closed, the slide block slides relative to the side near the clearance opening or resets towards the inside of the sliding groove. The closing drive mechanism includes a rocker arm, a sleeve, and a spring. One end of the rocker arm is rotatably connected to the receiving cavity and can swing relative to the receiving cavity along its plane. One end of the sleeve is rotatably connected to the other end of the rocker arm, and the other end of the sleeve is sleeved within the spring. The other end of the spring is located within the first socket. An arc-shaped guide structure is provided on the side of the slide block near the rocker arm, and the rocker arm has a guide part that cooperates with the arc-shaped guide structure, so that when the arm body is relatively opened, the slide block pushes the rocker arm to compress the spring through the arc-shaped guide structure, and during the process of the arm body being relatively closed, the elastic recovery of the spring pushes the slide block back to its original position.

[0009] Compared with existing technologies, the hinge arm assembly of this utility model adopts a sunken accommodating cavity structure for the arm body. The closing drive mechanism and the slide are arranged in a sunken configuration within the accommodating cavity of the arm body. The linkage of the slide is achieved through an extension of the transmission arm with a clearance opening. This avoids the space occupation of traditional torsion spring layouts, significantly reducing the overall thickness of the hinge device and achieving an ultra-thin, flat structure. Thus, the arm body can be concealed and embedded in the inner groove of the cabinet side panel, meeting the concealment and integration requirements of high-end homes. Furthermore, through the cooperation of the rocker arm and the arc-shaped guide structure of the slide, during the relative opening of the arm body, the slide pushes the rocker arm to compress the spring, achieving smooth buffering and preventing damage to the hinge assembly caused by rapid opening of the arm body. Simultaneously, the spring pre-stores elastic potential energy. When closing, the spring elastically recovers, pushing the slide to reset, thus automatically closing the hinge arm assembly. This ensures that the user can achieve relative closure of the hinge arm assembly with minimal force, improving the user experience. Furthermore, the sliding fit between the slide and the slide block, the planar swing design of the rocker arm, and the axial force application method of the spring all optimize the mechanical wear problem of traditional hinges, extend service life, and enhance structural reliability.

[0010] Furthermore, it also includes a buffer push rod disposed in the accommodating cavity. The buffer push rod is disposed on one side of the slide's reset direction. When the slide 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. With this arrangement, during the slide's reset process, the buffer push rod can further absorb the remaining kinetic energy, avoid rigid collisions when the slide is rapidly reset, reduce impact noise when the cabinet door is closed, and provide good door closing buffer performance. This makes the hinge quieter and smoother during the closing process, and improves the overall service life, meeting the stringent requirements of high-end homes for quietness and durability.

[0011] Furthermore, the slide block is provided with a sliding clearance groove on the side near the rocker arm. The arc-shaped guide structure includes an inclined portion on the rear side wall of the sliding clearance groove and a flat portion on the rear side of the slide block near the rocker arm. The flat portion and the inclined portion are connected by an arc transition. The guide portion is a bent structure on the outside of the rocker arm. When the hinge cup is open relative to the arm, the slide block slides through the guide and pushes the guide portion of the rocker arm from the inclined portion to the flat portion, so that the rocker arm compresses the spring. When the hinge cup is closed relative to the arm, the slide block slides through the guide and cooperates with the elastic recovery of the spring to drive the guide portion of the rocker arm to slide from the flat portion to the inclined portion, so that the slide block is pushed back into place under the elastic recovery of the spring. With this setting, during the opening process of the cabinet door, the inclined portion guides the guide portion of the rocker arm to gradually slide towards the flat 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 guide portion from the flat portion to the inclined portion cooperates with the spring release to achieve a reset rhythm of fast first and slow later. Finally, the buffer push rod absorbs the residual kinetic energy and eliminates the impact sound.

[0012] Furthermore, a second socket is provided within the buffer zone of the accommodating cavity and located behind the slide block. The second socket has a second socket hole, and the cylinder of the buffer push rod is placed in the second socket hole. The first socket has a first socket hole on the side near the sleeve rod, and the other end of the spring is placed in the first socket hole. The accommodating cavity is rectangular. The slide groove is located at the bottom edge of the accommodating cavity near the clearance opening and is arranged along the length of the bottom edge. The first socket is located at the corner of the top edge near the clearance opening, and the first socket hole of the first socket is inclined towards the slide block. The second socket is located at the bottom edge of the accommodating cavity away from the clearance opening and is arranged along the length of the bottom edge. Through this arrangement, the slide groove, the first socket, and the second socket are arranged in a specific spatial relationship within the rectangular cavity, achieving extreme compactness of the hinge structure and a significant improvement in mechanical performance. The sliding groove is arranged along the bottom edge and the inclined design of the top corner of the first set of connecting seats forms a spatial diagonal layout, which makes the direction of the spring force highly matched with the movement trajectory of the rocker arm, reducing the lateral force component and compressing the overall thickness. The second set of connecting seats is located on the opposite bottom edge and works with the buffer push rod to form a long lever arm buffer system, providing secondary buffering at the end of the slide seat reset, effectively eliminating impact noise.

[0013] Furthermore, the bottom of the slide block is provided with a mounting groove arranged along its length, and a sliding member is disposed in the mounting groove. The slide block contacts the bottom wall of the receiving cavity through the sliding member. The slide block is made of plastic material, and the sliding member is made of metal material. The sliding member has upwardly extending first transition portions on both sides, each with a first rotating hole. The front side of the slide block has a rotating connection port, and the two side walls of the rotating connection port have through second rotating holes. The mounting groove is adapted to the shape of the sliding member. When the sliding member is placed in the mounting groove, the first rotating hole and the second rotating hole are respectively correspondingly arranged. One end of the transmission arm is placed in the rotating connection port. Furthermore, it is rotatably connected to the first rotating hole and the second rotating hole respectively via a rotating shaft; the rear side of the slide is provided with a vertically arranged positioning groove, and the rear end of the sliding member is provided with a vertically arranged positioning block. When the sliding member is placed in the mounting groove, the positioning block is placed in the positioning groove. With this arrangement, by covering the bottom of the plastic slide with a sliding member made of metal material, the overall strength of the slide is ensured. At the same time, the sliding groove between the slide and the arm body is a frictional movement between plastic and metal, which helps to reduce the friction coefficient of the slider and eliminate the noise generated by the sliding of the slide. Similarly, the contact between the rocker arm and the slide arm is also a friction between metal and plastic, which similarly eliminates the noise generated by the friction between the rocker arm and the slide arm.

[0014] Furthermore, it also includes a mounting base and a fixing base. The fixing base is used for pre-assembly in the inner groove of the cabinet side panel, and the arm body is fixed to the fixing base by the mounting base. The fixing base has outwardly extending first connecting edges on both sides, and the two first connecting edges are connected by a connecting arm. The first connecting edges have a plurality of first connecting holes arranged along their length direction. The plurality of first connecting holes are connected to the cabinet door by first screws to fix the fixing base to the cabinet door. The mounting base is installed on the fixing base by first fasteners. The upper end of the mounting base has outwardly extending second retaining edges on both sides. The second retaining edges have receiving holes for accommodating the first screws corresponding to each first connecting hole. The mounting base has a sliding mounting cavity with a front opening. The bottom of the sliding mounting cavity has a sliding guide groove with a front opening. The bottom of the arm body has a guide block that cooperates with the sliding guide groove. The arm body is guided and assembled in the sliding mounting cavity by the sliding cooperation between the guide block and the sliding guide groove. The arm body is fixed to the mounting base by second fasteners. This design effectively enables rapid installation and precise adjustment of the hinge mechanism. The fixed base provides flexible installation positioning options through multiple first connecting holes on the first connecting edges on both sides, while the mounting base achieves stepless sliding adjustment of the arm body through the cooperation of the sliding mounting cavity and guide groove, and is then fixed by a second fastener. This dual fixing structure ensures installation stability and simplifies the installation process. At the same time, the receiving hole design on the mounting base avoids interference with the screws of the fixed base, making the overall structure more compact. It is particularly suitable for the installation needs of high-end cabinets that require precise adjustment of the cabinet door position.

[0015] Furthermore, it also includes a decorative cover with receiving cavities open at the front and bottom. The decorative cover has slide rail grooves arranged along its length on both sides, with openings on the inner and front sides. The outer side of the second stop edge is slidably fitted with the slide rail grooves, allowing the decorative cover to cover the outer sides of the arm body, mounting base, and fixing base. This design, by adding a decorative cover with slide rail grooves, allows the hinge device to quickly cover the outer sides of the arm body, mounting base, and fixing base after installation via a sliding fit. This not only effectively conceals the internal mechanical structure and improves the overall aesthetics, but the slide rail groove design also facilitates the disassembly and maintenance of the decorative cover, balancing practicality and aesthetics.

[0016] The hinge device includes: a hinge cup for installation in a groove in a cabinet door, the hinge arm assembly, and a connecting rod assembly; the hinge arm assembly is for installation in an inner groove in a side panel of the cabinet; the connecting rod assembly is linked to the outer end of the transmission arm, the hinge seat of the arm body, and the hinge cup respectively; when the hinge cup is opened or closed relative to the arm body, the slide block slides relative to the side near the clearance opening or resets to the inside of the slide groove.

[0017] Compared with existing technologies, the hinge device of this utility model adopts a sunken cavity structure for the arm body, and the closing drive mechanism and slide are arranged in a sunken manner within the cavity of the arm body. The linkage between the slide and the connecting rod assembly is achieved through an avoidance opening, avoiding the space occupation of the traditional torsion spring layout. This significantly reduces the overall thickness of the hinge device and achieves an ultra-thin and flat structure, allowing the arm body to be hiddenly embedded in the inner groove of the cabinet side panel, meeting the needs of high-end homes for concealment and integration. In addition, through the cooperation of the arc-shaped guide structure of the rocker arm and the slide, during the opening of the cabinet door, the slide pushes the rocker arm to compress the spring, achieving smooth buffering and preventing the hinge device from being pried open and damaged by the rapid opening of the cabinet door. At the same time, the spring pre-stores elastic potential energy when driving the cabinet door to close; when closing, the spring elastically recovers and pushes the slide to reset, realizing automatic closing of the cabinet door, ensuring that the user can close the cabinet door with less force, improving the user experience. Furthermore, the sliding fit between the slide and the slide block, the planar swing design of the rocker arm, and the axial force application method of the spring all optimize the mechanical wear problem of traditional hinges, extend service life, and enhance structural reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a hinge device installed on a cabinet door and cabinet body.

[0019] Figure 2 This is a schematic diagram showing the hinge device separated from the cabinet door and cabinet body.

[0020] Figure 3 This is a schematic diagram of the decorative cover of the hinge device in the separated state.

[0021] Figure 4 This is an exploded view of the hinge mechanism.

[0022] Figure 5 This is a schematic diagram showing the hinge cup in the open position relative to the arm.

[0023] Figure 6 This is a schematic diagram showing the hinge cup in the closed position relative to the arm.

[0024] Figure 7 This is an exploded view of the arm and hinge cup.

[0025] Figure 8 This is a schematic diagram of the hinge arm assembly.

[0026] Figure 9 This is an exploded view of the slide and arm.

[0027] Figure 10 This is an exploded view of the slide.

[0028] Figure 11 This is a schematic diagram of the arm and torso.

[0029] Labeling Explanation: Cabinet door 51, Cabinet body 52, Hinge cup 2, Arm body 1, Closing drive mechanism 3, Linkage assembly 4, Receiving cavity 11, Slide groove 19, First socket 12, Clearance opening 13, Slide seat 14, Rocker arm 31, Sleeve rod 32, Spring 33, Guide part 34, Buffer push rod 15, First connecting rod 41, Second connecting rod 42, Adapter seat 43, Transmission arm 44, Sliding clearance groove 141, Inclined part 142, Flat part 143, Second socket 151, Second socket hole 152, First socket hole 121, Mounting groove 144, Sliding part 16, First adapter part 161, First rotating hole 162, Rotating connection opening 145, Second rotating hole 146, Rotating... Shaft 147, positioning groove 148, positioning block 163, mounting base 5, fixing base 6, first connecting edge 61, first connecting 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 mounting cavity 55, sliding guide groove 56, second fastener 57, second fastening hole 571, guide block 17, decorative cover 18, receiving cavity 181, slide rail groove 182, second connecting edge 21, second connecting hole 22, anti-slip texture 23, second screw 24, groove 511, inner groove 521, hinge base 10, sliding area 190, driving area 120, buffer zone 150. Detailed Implementation

[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model.

[0031] Example 1:

[0032] See Figure 11 The arm body 1 of this utility model has a receiving cavity 11 that sinks to the bottom. The receiving cavity 11 has a sliding area 190, a driving area 120 and a buffer zone 150. The sliding area 190 and the driving area 120 are arranged adjacent to each other. The buffer zone 150 is located behind the sliding area 190. The arm body 1 has an avoidance opening 13 located in front of the sliding area 190.

[0033] Compared with existing technologies, the arm body 1 of this utility model integrates the sliding area 190, the driving area 120, and the buffer zone 150 inside the arm body 1 through the sunken accommodating cavity 11 design. Combined with the avoidance opening 13 structure, this significantly reduces the overall thickness of the hinge device, allowing it to be completely embedded in the inner groove of the cabinet side panel. This greatly reduces the thickness of the hinge device, achieving a near-flat fit with the cabinet 51, significantly improving aesthetics and space utilization. Furthermore, the accommodating cavity 11 adopts a modular partition design, specifically including adjacent sliding areas 190 and driving areas 120 and a rear-positioned buffer zone 150. This optimizes the driving force transmission path, replacing the redundant space occupied by traditional torsion springs. This ensures smooth opening and closing while overcoming the thickness limitations of the arm body 1 through a compact layout, achieving an ultra-thin and flat structure. Additionally, the avoidance opening 13 is positioned at the front to prevent movement interference, and the rear-positioned buffer zone 150 effectively absorbs the impact of opening and closing the hinge device. This simplifies the appearance while ensuring durability, meeting the comprehensive needs of high-end homes for concealment, minimalist aesthetics, and practicality.

[0034] See Figure 11 In one embodiment, the sliding area 190 is provided with a sliding groove 19, the driving area 120 is provided with a first socket 12, the buffer zone 150 is provided with a second socket 151, and the arm body 1 is provided with a hinge seat 10 on the side near the avoidance opening 13.

[0035] Example 2:

[0036] See Figures 1 to 11 The main purpose of this embodiment is to provide a hinge arm assembly according to the first embodiment, including an arm body 1, a slide block 14, and a closing drive mechanism 3; the arm body 1 has a recessed receiving cavity 11, the sliding area 190 of the receiving cavity 11 is provided with a slide groove 19, the drive area 120 is provided with a first socket 12, the slide block 17 is slidably placed in the slide groove 19, and the outer end of the slide block 14 is rotatably connected to a transmission arm 44. The transmission arm 44 is linked to the connecting rod assembly 4 of the hinge device through a clearance opening 13, so that when the arm body 1 is relatively opened or closed, the slide block 14 slides relative to the side near the clearance opening 13 or resets to the inside of the slide groove 19; the closing drive mechanism 3 includes a rocker arm 31, The sleeve rod 32 and spring 33 are provided. One end of the rocker arm 31 is rotatably connected to the receiving cavity 11 and can swing relative to it along the plane of the receiving cavity 11. One end of the sleeve rod 32 is rotatably connected to the other end of the rocker arm 31. The other end of the sleeve rod 32 is sleeved in the spring 33. The other end of the spring 33 is set in the first socket 12. The slide 14 is provided with an arc-shaped guide structure on the side near the rocker arm 31. The rocker arm 31 is provided with a guide part 34 that cooperates with the arc-shaped guide structure so that when the arm 1 is relatively opened, the slide 14 pushes the rocker arm 31 to compress the spring 33 through the arc-shaped guide structure. And when the arm 1 is relatively closed, the elastic recovery of the spring 33 pushes the slide 14 to return to its original position.

[0037] Compared with the prior art, the hinge arm assembly of this utility model adopts a sunken receiving cavity 11 structure for the arm body 1, and the closing drive mechanism 3 and the slide 14 are arranged in a sunken manner within the receiving cavity 11 of the arm body 1. The linkage of the slide 14 is achieved by extending the avoidance opening 13 through the transmission arm 44, avoiding the space occupation of the traditional torsion spring layout, achieving a significant reduction in the overall thickness of the hinge device and realizing an ultra-thin and flat structure. Thus, the arm body 1 can be embedded in the inner groove 521 of the side panel of the cabinet 52 in a hidden manner, meeting the needs of high-end home furnishings for concealment and integration. In addition, through the cooperation of the rocker arm 31 and the arc-shaped guide structure of the slide 14, when the arm body 1 is relatively opened, the slide 14 pushes the rocker arm 31 to compress the spring 33, achieving smooth buffering and preventing the hinge assembly from being pried and damaged by the rapid opening of the arm body 1. At the same time, the spring 33 stores elastic potential energy in advance. When closing, the spring 33 elastically recovers and pushes the slide 17 to reset, realizing the automatic closing of the hinge arm assembly. This ensures that the user can close the hinge arm assembly with less force, improving the user experience. Furthermore, the sliding fit between the slide groove 19 and the slide block 14, the planar swing design of the rocker arm 31, and the axial force application method of the spring 33 all optimize the mechanical wear problem of traditional hinges, extend service life, and enhance structural reliability.

[0038] See Figures 2 to 7 In one embodiment, a buffer push rod 15 is also provided in the receiving cavity 11. The buffer push rod 15 is located on one side of the slide 14 in the reset direction. When the slide 14 is relatively reset, it abuts against the output rod of the buffer push rod 15. The elastic coefficient of the spring 33 is greater than the elastic coefficient of the buffer push rod 15. With this arrangement, during the reset process of the slide 14, the buffer push rod 15 can further absorb the remaining kinetic energy, avoid rigid collision when the slide 14 is quickly reset, reduce the impact noise when the cabinet door 51 is closed, and the cabinet door 51 has good closing buffer performance, making the hinge quieter and smoother during the closing process, and improving the overall service life, meeting the stringent requirements of high-end home furnishings for quietness and durability.

[0039] See Figures 2 to 7In one embodiment, the slide block 14 is provided with a sliding clearance groove 141 on the side near the rocker arm 31. The arc-shaped guide structure includes an inclined portion 142 on the rear side wall of the sliding clearance groove 141 and a flat portion 143 on the rear side of the slide block 14 near the rocker arm 31. The flat portion 143 and the inclined portion 142 are connected by an arc. The guide portion 34 is a bent structure on the outside of the rocker arm 31. When the hinge cup 2 is opened relative to the arm body 1, the slide block 14 slides through the guide and pushes the guide portion 34 of the rocker arm 31 from the inclined portion 142. The rocker arm 31 slides to the flat section 143, compressing the spring 33. When the hinge cup 2 is closed relative to the arm body 1, the slide block 14, through the guide sliding and the elastic recovery of the spring 33, drives the guide part 34 of the rocker arm 31 to slide from the flat section 143 to the inclined section 142, thus pushing the slide block 14 back into place under the elastic recovery of the spring 33. With this setting, during the opening process of the cabinet door 51, the inclined section 142 guides the guide part 34 of the rocker arm 31 to gradually slide towards the flat section 143, and the compression force of the spring 33 increases linearly, causing the cabinet door 51 to open slowly. During the closing process, the guide part 34 slides in the opposite direction from the flat section 143 to the inclined section 142 in conjunction with the release of the spring 33, achieving a reset rhythm of fast at first and slow later. Finally, the buffer push rod 15 absorbs the residual kinetic energy and eliminates the impact sound.

[0040] See Figures 2 to 7 In one embodiment, a second socket 151 is provided within the buffer zone 150 of the accommodating cavity 11 and located behind the slide 14. The second socket 151 has a second socket hole 152. The cylinder of the buffer push rod 15 is placed within the second socket hole 152. A first socket 12 has a first socket hole 121 on the side near the sleeve rod 32. The other end of the spring 33 is placed within the first socket hole 121. The accommodating cavity 11 is rectangular, and the sliding groove 19 is located at the bottom edge of the accommodating cavity 11 near the clearance opening 13. Furthermore, the first socket 12 is positioned at the corner of the top edge near the clearance opening 13, with its first socket hole 121 inclined towards the slide block 14. The second socket 151 is positioned at the bottom edge of the accommodating cavity 11 away from the clearance opening 13, and is arranged along the length of the bottom edge. This arrangement, with the slide groove 19, the first socket 12, and the second socket 151 arranged in a specific spatial relationship within the rectangular accommodating cavity 11, achieves extreme compactness of the hinge structure and a significant improvement in mechanical performance. The slide groove 19, arranged along the bottom edge, forms a diagonal spatial layout with the inclined design of the top corner of the first socket 12, ensuring that the force direction of the spring 33 is highly matched to the movement trajectory of the rocker arm 31, reducing lateral force and compressing the overall thickness. The second socket 151, located on the opposite bottom edge, cooperates with the buffer push rod 15 to form a long-arm buffer system, providing secondary buffering at the return end of the slide block 14, effectively eliminating impact noise.

[0041] See Figures 2 to 11 In one embodiment, the slide 14 has a mounting groove 144 arranged along its length at its bottom. A sliding member 16 is disposed in the mounting groove 144. The slide 14 contacts the bottom wall of the receiving cavity 11 through the sliding member 16. The slide 14 is made of plastic material, and the sliding member 16 is made of metal material. The sliding member 16 has upwardly extending first transition portions 161 on both sides, and the first transition portions 161 have first rotating holes 162. The front side of the slide 14 has a rotating connection port 145, and the two side walls of the rotating connection port 145 have through second rotating holes 146. The mounting groove 144 is adapted to the shape of the sliding member 16. When the sliding member 16 is placed in the mounting groove 144, the first rotating holes 162 and the second rotating holes 146 are respectively correspondingly arranged. One end of the transmission arm 44 is placed on the rotating groove 144. The sliding block 144 is rotatably connected to the first rotating hole 162 and the second rotating hole 146 respectively through the rotating shaft 147. The rear side of the slide block 14 is provided with a vertically arranged positioning groove 148, and the rear end of the sliding member 16 is provided with a vertically arranged positioning block 163. When the sliding member 16 is placed in the mounting groove 144, the positioning block 163 is placed in the positioning groove 148. With this arrangement, by covering the bottom of the plastic slide block 14 with a metal sliding member 16, the overall strength of the slide block 14 is ensured. At the same time, the sliding movement between the slide block 14 and the sliding groove 19 of the arm body 1 is a frictional movement between plastic and metal, which helps to reduce the friction coefficient of the sliding block and eliminate the noise generated by the sliding of the slide block 14. Similarly, the contact between the rocker arm 31 and the slide block 14 is also a frictional movement between metal and plastic, which similarly eliminates the noise generated by the friction between the rocker arm 31 and the slide block 14.

[0042] See Figures 2 to 11 In one embodiment, the device further includes a mounting base 5 and a fixing base 6. The fixing base 6 is used to pre-assemble into the inner groove 521 of the side panel of the cabinet 52. The arm body 1 is fixed to the fixing base 6 by the mounting base 5. The fixing base 6 has outwardly extending first connecting edges 61 on both sides. The two first connecting edges 61 are connected by connecting arms 64. The first connecting edges 61 have a plurality of first connecting holes 62 arranged along the length direction. The plurality of first connecting holes 62 are connected to the side panel of the cabinet 52 by first screws 63 so that the fixing base 6 is fixed in the inner groove 521 of the side panel of the cabinet 52.

[0043] The mounting base 5 is mounted on the fixed base 6 by a first fastener 52. The mounting base 5 and the fixed base 6 are respectively provided with a first fastening hole 521. The first fastener 52 is connected to the two first fastening holes 521 to realize the connection between the mounting base 5 and the fixed base 6. The upper end of the mounting base 5 is provided with outwardly extending second flanges 51 on both sides. The second flanges 51 are provided with receiving holes 53 for accommodating the first screws 63 corresponding to each first connecting hole 62.

[0044] The mounting base 5 has a sliding mounting cavity 55 with a front opening. The bottom of the sliding mounting cavity 55 has a sliding guide groove 56 with a front opening. The bottom of the arm body 1 has a guide block 17 that cooperates with the sliding guide groove 56. The arm body 1 is guided and 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 a second fastening hole 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 11. This design effectively enables rapid installation and precise adjustment of the hinge mechanism. The fixed base 6 provides flexible installation positioning options through multiple first connecting holes 62 on the first connecting edges 61 on both sides. The mounting base 5 achieves stepless sliding adjustment of the arm body 1 through the cooperation of the sliding mounting cavity 55 and the guide groove, and is then fixed by the second fastener 57. This double fixing structure ensures the installation is firm and 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 base 6, making the overall structure more compact. It is particularly suitable for the installation needs of high-end cabinets 52 that require precise adjustment of the position of the cabinet door 51.

[0045] See Figures 2 to 11 In one embodiment, a decorative cover 18 is also included. The decorative cover 18 has a receiving cavity 181 with openings on the front and bottom. The decorative cover 18 has slide rail grooves 182 arranged along the length of both sides. The slide rail grooves 182 have openings on their inner and front sides. The outer side of the second stop 51 is slidably fitted with the slide rail grooves 182 so that the decorative cover 18 covers the outer side of the arm body 1, the mounting base 5, and the fixing base 6. With this configuration, by adding a decorative cover 18 with slide rail grooves 182, the hinge device can be quickly covered on the outer side of the arm body 1, the mounting base 5, and the fixing base 6 after installation through a sliding fit. This not only effectively hides the internal mechanical structure and improves the overall aesthetics, but also facilitates the disassembly and maintenance of the decorative cover 18, thus combining practicality and decoration.

[0046] Example 2:

[0047] See Figures 1 to 11The main objective of this embodiment is to provide a hinge device for the hinge arm assembly of the first embodiment, including: a hinge cup 2 for installation in the groove 511 of the cabinet door 51, the hinge arm assembly and the connecting rod assembly 4 for installation in the inner groove 521 of the side panel of the cabinet body 52, and the connecting rod assembly 4 is linked to one side of the hinge cup 2; the connecting rod assembly 4 is linked to the outer end of the transmission arm 44, the hinge seat 10 of the arm body 1 and the hinge cup 2 respectively; when the hinge cup 2 is opened or closed relative to the arm body 1, the slide 14 slides relative to the side near the clearance opening 13 or returns to the inside of the slide groove 19. When the hinge cup 2 is opened relative to the arm body 1, the slide 14 pushes the rocker arm 31 to compress the spring 33 through the arc-shaped guide 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 slide 14 to return to the position.

[0048] Compared with the prior art, the hinge device of this utility model adopts a sunken accommodating cavity 11 structure for the arm body 1, and the closing drive mechanism 3 and the slide 14 are arranged in a sunken manner in the accommodating cavity 11 of the arm body 1. The linkage between the slide 14 and the connecting rod assembly 4 is achieved through the avoidance opening 13, which avoids the space occupation of the traditional torsion spring layout, and achieves a significant reduction in the overall thickness of the hinge device and an ultra-thin and flat structure. Thus, the arm body 1 can be embedded in the inner groove 521 of the side panel of the cabinet 52 in a hidden manner, which meets the needs of high-end home furnishings for concealment and integration. Furthermore, through the coordinated arc-shaped guide structure of the rocker arm 31 and the slide block 14, during the opening of the cabinet door 51, the slide block 14 pushes the rocker arm 31 to compress the spring 33, achieving smooth buffering; this prevents the hinge device from being pried open and damaged due to the rapid opening of the cabinet door 51, while also allowing the spring 33 to pre-store elastic potential energy when driving the cabinet door 51 to close; when closing, the spring 33 elastically recovers and pushes the slide block 14 to reset, achieving automatic closing of the cabinet door 51, ensuring that the user can close the cabinet door 51 with minimal force, improving the user experience. In addition, the sliding engagement of the slide groove 19 and the slide block 14, the planar swing design of the rocker arm 31, and the axial force application method of the spring 33 all optimize the mechanical wear problem of traditional hinges, extend service life, and enhance structural reliability.

[0049] See Figures 2 to 7In one embodiment, the linkage assembly 4 includes a first linkage 41 and a second linkage 42. The two ends of the first linkage 41 are rotatably connected to the hinge cup 2 and the hinge seat 10 of the arm body 1, respectively. The two ends of the second linkage 42 are also rotatably connected to the hinge cup 2 and the arm body 1, respectively. The hinge cup 2, the first linkage 41, the arm body 1 and the second linkage 42 constitute a four-bar linkage mechanism. The second linkage 42 is provided with a transition seat 43 in the middle. The outer end of the slide 14 is rotatably connected to the transmission arm 44. The outer end of the transmission arm 44 is rotatably connected to the transition seat 43. With this arrangement, the hinge cup 2, the first linkage 41, the arm body 1 and the second linkage 42 constitute a four-bar linkage mechanism, making the movement trajectory of the cabinet door 51 more precise and controllable during the opening and closing process, avoiding the jamming or offset problem caused by single-point force of traditional hinges, and improving the smoothness of use. In addition, the transmission arm 44 links the sliding motion of the slide block 14 with the rotational motion of the second link 42, ensuring that the sliding of the slide block 14 in the accommodating cavity 11 is highly synchronized with the opening and closing action of the hinge device, reducing redundant motion and further compressing the internal space of the hinge device.

[0050] See Figures 2 to 10 In one embodiment, the hinge cup 2 has a second connecting edge 21 on its outer periphery, 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, so that the hinge cup 2 is fixed in the groove 511 of the cabinet door 51; the bottom surface of the second connecting edge 21 is provided with anti-slip texture 23. By providing a second connecting edge 21 with anti-slip texture 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 ease of installation are significantly improved. The multi-hole design provides flexible installation and adjustment space, and the anti-slip texture 23 effectively prevents displacement and slippage 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.

[0051] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. Arm body, characterized in that, The arm body has a recessed cavity that sinks to the bottom. The cavity contains a sliding area, a driving area, and a buffer zone. The sliding area and the driving area are arranged adjacent to each other. The buffer zone is located behind the sliding area. The arm body has an avoidance opening on the front side of the sliding area.

2. The arm body according to claim 1, characterized in that, The sliding area is provided with a sliding groove, the driving area is provided with a first socket, the buffer zone is provided with a second socket, and the arm body is provided with a hinge seat on the side near the clearance opening.

3. A hinge arm assembly, characterized in that, include: The arm body as described in claim 1 has a sliding groove in the sliding area and a first socket in the driving area; The slide block is slidably placed in the slide groove. The outer end of the slide block is rotatably connected to the transmission arm. The transmission arm is linked to the linkage assembly of the hinge device through the clearance opening, so that when the arm body is relatively opened or closed, the slide block slides relative to the side near the clearance opening or resets to the inside of the slide groove. The closing drive mechanism includes a rocker arm, a sleeve, and a spring. One end of the rocker arm is rotatably connected to the receiving cavity and can swing relative to it along the plane of the receiving cavity. One end of the sleeve is rotatably connected to the other end of the rocker arm, and the other end of the sleeve is sleeved in the spring. The other end of the spring is located in the first sleeve seat. The slide block is provided with an arc-shaped guide structure on the side near the rocker arm. The rocker arm is provided with a guide part that cooperates with the arc-shaped guide structure so that when the arm is relatively opened, the slide block pushes the rocker arm to compress the spring through the arc-shaped guide structure, and during the process of the arm being relatively closed, the elastic recovery of the spring pushes the slide block to return to its original position.

4. The hinge assembly according to claim 3, characterized in that, It also includes a buffer push rod disposed in the accommodating cavity. The buffer push rod is disposed on one side of the slide in the reset direction. When the slide is relatively reset, it abuts against the output rod of the buffer push rod. The elastic coefficient of the spring is greater than the elastic coefficient of the buffer push rod.

5. The hinge assembly according to claim 3, characterized in that, The slide block is provided with a sliding clearance groove on the side near the rocker arm. The arc-shaped guide structure includes an inclined portion on the rear side wall of the sliding clearance groove and a flat portion on the rear side of the slide block near the rocker arm. The flat portion and the inclined portion are connected by an arc transition. The guide portion is a bent structure on the outside of the rocker arm. When the arm is relatively opened, the slide block slides through the guide and pushes the guide portion of the rocker arm from the inclined portion to the flat portion, so that the rocker arm compresses the spring. When the arm is relatively closed, the slide block slides through the guide and cooperates with the elastic recovery of the spring to drive the guide portion of the rocker arm from the flat portion to the inclined portion, so as to push the slide block to return to its original position under the elastic recovery of the spring.

6. The hinge assembly according to claim 4, characterized in that, A second socket is provided in the buffer zone of the accommodating cavity and on the rear side of the slide. The second socket has a second socket hole. The cylinder of the buffer push rod is placed in the second socket hole. The first socket has a first socket hole on the side near the sleeve rod. The other end of the spring is placed in the first socket hole.

7. The hinge assembly according to claim 4, characterized in that, The sliding area is provided with a sliding groove, the driving area is provided with a first socket, the buffer zone is provided with a second socket, and the arm body is provided with a hinge seat on the side near the clearance opening. The accommodating cavity is rectangular. The sliding groove is located at the bottom edge of the accommodating cavity near the clearance opening and is arranged along the length of the bottom edge. The first socket is located at the corner of the top edge near the clearance opening and the first socket hole of the first socket is arranged inclined towards the sliding seat. The second socket is located at the bottom edge of the accommodating cavity away from the clearance opening and is arranged along the length of the bottom edge.

8. The hinge assembly according to claim 3, characterized in that, The bottom of the slide is provided with a mounting groove arranged along the length direction, and a sliding member is disposed in the mounting groove. The slide contacts the bottom wall of the receiving cavity through the sliding member. The slide is made of plastic material, and the sliding member is made of metal material. The sliding member has an upwardly extending first transition portion on both sides, and the first transition portion has a first rotating hole. The front side of the slide block has a rotating connection port, and the two side walls of the rotating connection port have through second rotating holes. The mounting groove is adapted to the shape of the sliding member. When the sliding member is placed in the mounting groove, the first rotating hole and the second rotating hole are respectively arranged correspondingly. One end of the transmission arm is placed in the rotating connection port and is rotatably connected to the first rotating hole and the second rotating hole respectively through a rotating shaft. The slide block has a vertically arranged positioning groove on its rear side, and the sliding member has a vertically arranged positioning block at its rear end. When the sliding member is placed in the mounting groove, the positioning block is placed in the positioning groove.

9. The hinge assembly according to claim 3, characterized in that, It also includes a mounting base and a fixing base, wherein the fixing base is used for pre-assembly in the inner groove of the cabinet side panel, and the arm body is fixed to the fixing base by the mounting base; The fixing base has outwardly extending first connecting edges on both sides, and the two first connecting edges are connected by connecting arms. The first connecting edges are arranged with a number of first connecting holes along the length direction. The number of first connecting holes are connected to the cabinet side plate by first screws so that the fixing base is fixed to the cabinet side plate. The mounting base is mounted on the fixed base by a first fastener. The upper end of the mounting base is provided with outwardly extending second flanges on both sides. The second flanges are provided with receiving holes for accommodating the first screws for each first connecting hole. The mounting base has a sliding mounting cavity with a front opening. The bottom of the sliding mounting cavity has a sliding guide groove with a front opening. The bottom of the arm body has a guide block that mates with the sliding guide groove. The arm body is guided and assembled into the sliding mounting cavity through the sliding engagement of the guide block and the sliding guide groove. The arm body is fixed to the mounting base by a second fastener. It also includes a decorative cover, which has a receiving cavity with openings at the front and bottom, and a slide rail groove arranged along the length of both sides. The slide rail groove has openings at the inside and front. The outer side of the second stop is slidably fitted with the slide rail groove so that the decorative cover covers the outer side of the arm body, mounting base and fixing base.

10. A hinge device, characterized in that, include: Hinges for installation in the recesses of cabinet doors; The hinge arm assembly according to any one of claims 3 to 9 is used for mounting in the inner groove of the cabinet side panel; The linkage assembly is connected to the outer end of the transmission arm, the hinge seat of the arm body, and the hinge cup, respectively. When the hinge cup is opened or closed relative to the arm, the slide block slides relative to the side near the clearance opening or resets to the inside of the slide groove.

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