Open-mounted hinge structure

Abstract

The invention relates to the technical field of door plate hinges, in particular to an open-mounted hinge structure which comprises a main arm, a hinge cup, a first connecting rod, a second connecting rod, a spring, a transmission rod and a buffer, one end of the first connecting rod is rotationally connected to the hinge cup, and the other end of the first connecting rod is movably connected with the transmission rod; a first connecting shaft and a second connecting shaft are further arranged at the end, close to the transmission rod, of the first connecting rod, a roller is rotationally mounted on the first connecting shaft, and the first connecting rod is rotationally connected with the main arm through the second connecting shaft; the buffer is arranged between the main arm and the transmission rod; a third connecting shaft and a fourth connecting shaft are arranged on the main arm; one end of the second connecting rod is rotationally connected to the hinge cup, and the other end is rotationally connected with the main arm through a third connecting shaft; the spring is arranged on the outer wall of the fourth connecting shaft in a sleeving mode, meanwhile, the tongue position of the spring abuts against the rolling wheel, and the clamping corner of the spring is assembled with the main arm. The hinge is lighter and thinner, the installation difficulty can be reduced, and the installation efficiency can be improved.

Description

Technical Field

[0001] This application relates to the technical field of door panel hinges, and in particular to a surface-mounted hinge structure. Background Technology

[0002] Hinges 105 are mostly used for the installation and connection between cabinet bodies and door panels. (Refer to...) Figure 1 and Figure 2 It generally includes a linkage assembly 1052 and a power mechanism for retracting and extending the linkage. The hinge 105 structure disclosed in the prior art is assembled with the linkage assembly 1052 through a tension spring 1051. The original power of the hinge 105 is provided by the tension spring 1051. The magnitude of the force effect depends on the extension and retraction length of the tension spring 1051. The direction of the force and the opening and closing of the door panel are achieved by the direction of the linkage connected to the lever arm, thereby realizing the opening and closing function of the door panel.

[0003] The hinge 105 on the market provides clearance space for the connecting rod assembly 1052, tension spring 1051 and the part where the lever arm cooperates through the inner cavity of the hinge cup 1053. Due to the limitation of the spring installation position, the hinge 105 structure is usually designed to be relatively thick and occupies a large space. When installing, users need to first groove the door panel and then place the hinge cup 1053 in the installation groove. This not only increases the difficulty and time cost of installation, but also causes some damage to the door panel, affecting the overall aesthetics and service life of the door panel. Summary of the Invention

[0004] To make hinges thinner and lighter, this application provides a surface-mounted hinge structure, which eliminates the need for additional slots in the door panel during installation, allowing the hinge to be directly installed on the door panel surface, thereby reducing installation difficulty and improving installation efficiency.

[0005] This application provides a surface-mounted hinge structure, which adopts the following technical solution: An exposed hinge structure includes a main arm, a hinge cup, a first link, a second link, a spring, a transmission rod, and a buffer, wherein one end of the first link is rotatably connected to the hinge cup, and the other end is movably connected to the transmission rod; The first connecting rod is also provided with a first connecting shaft and a second connecting shaft at one end near the transmission rod. A roller is rotatably mounted on the first connecting shaft, and the first connecting rod is rotatably connected to the main arm through the second connecting shaft. The buffer is disposed between the main arm and the transmission rod to provide a buffering effect for the movement of the transmission rod; The main arm is equipped with a third connecting shaft and a fourth connecting shaft; One end of the second connecting rod is rotatably connected to the hinge cup, and the other end is rotatably connected to the main arm through the third connecting shaft; The spring is sleeved on the outer wall of the fourth connecting shaft, and the tongue of the spring abuts against the roller, while the retaining angle of the spring is assembled with the main arm; The main arm has a first clearance cavity, and the transmission rod is disposed in the first clearance cavity; The second link has a second clearance cavity, and the first link is disposed in the second clearance cavity.

[0006] By adopting the above technical solution, when the door panel is opened or closed, the first connecting rod and the transmission rod are movably connected to transmit force. Under the pressure of the spring tongue, the roller can rotate smoothly and drive the first connecting rod to rotate. In conjunction with the connection of the second connecting rod with the main arm and the hinge cup, the smoothness and stability of the door panel opening and closing action can be ensured. At the same time, the buffer is set to buffer the movement of the transmission rod during the opening and closing of the door panel, avoiding the large impact force generated by the hinge components due to the sudden violent movement, thereby helping to reduce the wear between components, thereby improving the service life, and making the door panel opening and closing process quieter and smoother.

[0007] Compared with the prior art, this application makes reasonable use of space by adjusting the installation position of the spring and the buffer, and adjusting the shape and position layout of the transmission rod and the main arm, and by designing the first and second clearance cavities, making the entire hinge structure more compact and achieving a thinner hinge design. Therefore, during installation, the hinge structure can be directly installed on the door panel surface without the need for additional grooving of the door panel, which greatly reduces the difficulty of installation and helps to improve the user's installation efficiency.

[0008] Preferably, the main arm, hinge cup, first connecting rod, and second connecting rod are assembled together to form a hinge main body assembly. The hinge cup has a third clearance cavity, which provides clearance space for the hinge main body assembly.

[0009] By adopting the above technical solution, during the opening and closing of the door panel, each link and the main arm will rotate and shift. The third clearance cavity provides sufficient space for the hinge cup, the main arm, the first link and the second link, and other components to move in coordination, making the movement of the entire hinge structure more coordinated, ensuring that there is no interference between the components, and ensuring the flexibility and smoothness of the movement of the main hinge components.

[0010] Preferably, the hinge cup has a first through hole and a second through hole on its side wall, the second connecting rod has a second mating hole at its end, the first connecting rod has a first mating hole at its end, and a U-shaped double needle is inserted into the hinge cup, so that one end of the double needle passes through the first through hole and the first mating hole at the same time, and the other end passes through the second through hole and the second mating hole at the same time.

[0011] By adopting the above technical solution, during the frequent opening and closing of the door panel, the U-shaped double needles enable the first and second connecting rods to be stably connected to the hinge cup. At the same time, the U-shaped double needles can withstand greater tensile and torsional forces and are not easy to loosen or fall off, thereby ensuring the stability and durability of the entire hinge structure.

[0012] Preferably, the transmission rod includes an L-shaped hook, and the first connecting rod includes a semi-enclosed pull hook, wherein the hook and the pull hook are movably engaged.

[0013] By adopting the above technical solution, the active hooking method of the L-shaped hook and the semi-enclosed pull hook can effectively transmit the force between the first connecting rod and the transmission rod when the door panel is opened and closed, making the transmission more stable and reliable. At the same time, the semi-enclosed pull hook plays a certain limiting role for the hook, preventing the hook from disengaging from the pull hook during the transmission of power, so as to ensure the continuity and stability of the transmission.

[0014] Preferably, the transmission rod includes a receiving portion, which includes a retaining edge, a top surface, and a guide hole. The cylinder of the buffer is fixed to the top surface, and the retaining edge is fixed around the edge of the top surface to provide protection for the buffer. The guide hole is formed through the retaining edge, and the output rod of the buffer passes through the guide hole and is assembled with the main arm.

[0015] By adopting the above technical solution, the guide perforation provides precise guidance for the output rod of the buffer, ensuring that the output rod can be accurately assembled with the main arm, ensuring that the buffer can play its buffering role normally, and the retaining edge can protect the buffer.

[0016] Preferably, buffer pads are respectively fitted at both ends of the second connecting shaft, and the buffer pads are disposed between the main arm and the first connecting rod.

[0017] By adopting the above technical solution, a certain impact force will be generated between the first link and the main arm when the door panel is opened and closed. The buffer pad can absorb and disperse these impact forces, thereby reducing the friction and collision generated between the first link and the main arm during rotation, and also reducing the generation of noise, making the opening and closing process of the door panel quieter and smoother.

[0018] Preferably, the end of the main arm is provided with a first connecting hole, a second connecting hole and a third connecting hole, wherein the fourth connecting shaft passes through the third connecting hole, the second connecting shaft passes through the second connecting hole and the third connecting shaft passes through the first connecting hole, so that the third connecting shaft, the second connecting shaft and the fourth connecting shaft are triangularly distributed and arranged parallel to each other.

[0019] By adopting the above technical solution, the triangular and parallel connection shaft arrangement during the opening and closing of the door panel makes the connection between the main arm and the first and second connecting rods more stable and reasonable, and makes the movement of the entire hinge structure more stable and coordinated.

[0020] Preferably, it also includes a first base, which is disposed at the bottom of the main arm, and a height adjustment component is provided between the two to adjust the distance between the first base and the main arm.

[0021] By adopting the above technical solution, there may be height differences in different door panel and cabinet installation scenarios. By adjusting the height adjustment component, the hinge structure can be better adapted to different installation environments, thus improving the versatility and applicability of the hinge.

[0022] Preferably, a length adjustment component is provided between the first base and the main arm to adjust the length deviation between the first base and the main arm.

[0023] By adopting the above technical solution, there may be certain errors in the processing and installation of the door panel and the cabinet. The length adjustment component can fine-tune these errors, so that the hinge structure can be accurately installed between the door panel and the cabinet, ensuring the opening and closing effect and stability of the door panel.

[0024] Preferably, it also includes a second base, wherein the first base has an assembly groove on the side away from the main arm, and the second base is installed in the assembly groove.

[0025] By adopting the above technical solution, the design of the mounting groove allows the second base to be accurately installed on the first base, the fit between the two is tighter, and it can withstand greater forces, further enhancing the stability and installation firmness of the entire hinge structure, and helping to improve the reliability of the hinge during long-term use.

[0026] Preferably, a positioning strip is fixed in the assembly groove, and a positioning groove is provided on the second base, with the positioning strip inserted into the positioning groove.

[0027] By adopting the above technical solution, the cooperation between the positioning strip and the positioning groove enables the second base to be positioned quickly and accurately during installation, ensuring the accuracy and efficiency of the installation.

[0028] Preferably, a width adjustment component is provided between the second base and the main arm to adjust the width deviation between the second base and the main arm.

[0029] By adopting the above technical solution, there may be some errors in the width of the door panel and the cabinet during the actual installation process. The width adjustment component can make fine adjustments to the width of the hinge structure to adapt to the width differences between different door panels and cabinets, so that the hinge structure can better match the door panel and the cabinet, thereby improving the quality and effect of the installation.

[0030] Preferably, the main arm includes a front and a back, which are two opposite sides of the main arm. The back faces the first base. A long groove is formed in the middle of the back. A limiting inclined surface is provided at one end of the long groove near the fourth connecting shaft. The two limiting inclined surfaces are symmetrically arranged along the long central axis of the long groove. The two retaining angles of the spring are respectively assembled with the corresponding limiting inclined surfaces.

[0031] By adopting the above technical solution, the limiting slope can accurately position and limit the spring's locking angle, ensuring the spring's position is stable during operation and preventing it from shifting or wobbling. This allows the force provided by the spring to be transmitted stably and accurately to the relevant components, thereby ensuring the smoothness and stability of the door panel during opening and closing.

[0032] Preferably, a mounting platform and a directional component are also fixed on the back of the main arm. The mounting platform is fixed between the two limiting inclined surfaces. The directional component is detachably covered on the long groove. One end of the transmission rod is slidably connected to the long groove. The buffer is installed in the receiving cavity formed by the transmission rod, the mounting platform, and the directional component. The end of the buffer cylinder is assembled with the side of the mounting platform. The output rod of the buffer passes through the guide hole and is assembled with the side of the long groove.

[0033] By adopting the above technical solution, the buffer is installed in the receiving cavity formed by the transmission rod, the mounting plate and the directional component, which can provide a stable support point for the installation of the buffer, effectively protect the buffer from the influence of external factors, and ensure that the buffer will not shake or shift during operation.

[0034] Preferably, a sliding component is provided between the main arm and the first base, and the first base slides with the main arm in the length direction through the sliding component.

[0035] By adopting the above technical solution, when the relative position of the main arm and the first base needs to be adjusted by the length adjustment component, the sliding component can make the first base slide flexibly along the length direction of the main arm. To a certain extent, it can adapt to the small structural deformation of the hinge after long-term use, which can ensure the stability and reliability of the hinge structure and help extend the service life of the hinge.

[0036] In summary, this application includes at least one of the following beneficial technical effects: 1. By adjusting the installation positions of the springs and dampers, as well as the shape and position layout of the transmission rods and main arms, and combining the design of the first and second clearance cavities, a lightweight hinge design was achieved. During installation, no additional slots need to be made in the door panel, reducing installation difficulty and improving installation efficiency. 2. Through the adjustment structure such as height adjustment parts, length adjustment parts, width adjustment parts and sliding components, it can adapt to the installation environment, size error and slight deformation after use of different door panels and cabinets, thus improving the versatility, applicability and reliability of the hinge. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the hinge in the prior art.

[0038] Figure 2 yes Figure 1 A sectional view.

[0039] Figure 3 This is a schematic diagram of the exposed hinge structure in the embodiment of this application.

[0040] Figure 4 yes Figure 3 Exploded view.

[0041] Figure 5 This is a schematic diagram of the main arm structure in an embodiment of this application.

[0042] Explanation of reference numerals in the attached drawings: 1. Main arm; 12. Long groove; 13. Limiting inclined surface; 14. Hanging platform; 15. Orienting component; 16. Third connecting shaft; 17. Fourth connecting shaft; 2. Hinge cup; 21. Double needle; 3. First connecting rod; 31. First connecting shaft; 311. Roller; 32. Second connecting shaft; 321. Buffer pad; 33. Hook; 4. Second connecting rod; 5. Spring; 6. Transmission rod; 61. Hook; 62. Receiving part; 621. Side guard; 622. Top surface; 7. Buffer; 8. First base; 9. Second base; 101. Height adjusting component; 102. Length adjusting component; 103. Width adjusting component; 104. Sliding assembly; 105. Hinge; 1051. Tension spring; 1052. Connecting rod assembly; 1053. Hinge cup. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0044] This application discloses an exposed hinge structure.

[0045] Reference Figure 3 and Figure 4A surface-mounted hinge structure includes a main arm 1, a hinge cup 2, a first connecting rod 3, a second connecting rod 4, a spring 5, a transmission rod 6, and a buffer 7. The main arm 1, hinge cup 2, first connecting rod 3, and second connecting rod 4 are assembled to form the main hinge assembly. The roller 311 can rotate smoothly under the elastic force of the spring 5 and drive the first connecting rod 3 to rotate. The buffer 7 buffers the movement of the transmission rod 6. Combined with the joint action of the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 16, and the fourth connecting shaft 17, this coordination makes the door panel opening and closing action smooth and stable.

[0046] This application makes reasonable use of space by adjusting the installation positions of spring 5 and buffer 7, and adjusting the shape and position layout of structures such as transmission rod 6 and main arm 1, and by designing the first and second clearance cavities, making the entire hinge structure more compact, thereby achieving a lightweight and thin hinge design.

[0047] Specifically, the hinge cup 2 includes a base plate and a side plate. The side plate is vertically fixed to the edge of the base plate. The base plate and the side plate together form a cavity with an opening. The hinge cup 2 has a third clearance cavity that penetrates the cavity and presents a convex cavity structure. The entire convex cavity structure provides clearance space for the main hinge component.

[0048] Furthermore, a first through hole and a second through hole are provided on the side wall of the hinge cup 2 near the third clearance cavity. Both the first through hole and the second through hole are opened through the side wall of the hinge cup 2, and the through direction is perpendicular to the direction of the cavity opening. A U-shaped double needle 21 is inserted into the hinge cup 2. Correspondingly, a second mating hole is provided at the end of the second connecting rod 4, and a first mating hole is provided at the end of the first connecting rod 3. One end of the double needle 21 passes through the first through hole and the first mating hole at the same time, and the other end passes through the second through hole and the second mating hole at the same time. The double needle 21 and the hinge cup 2 are assembled by riveting, so that the first connecting rod 3 can be rotatably connected to the double needle 21, and the second connecting rod 4 can be rotatably connected to the double needle 21. This ensures that the first connecting rod 3 and the second connecting rod 4 can move flexibly and without interference during the opening and closing of the door panel. The U-shaped double needle 21 can withstand large tensile and torsional forces and is not easy to loosen or fall off, thus ensuring the connection stability of the entire hinge main component.

[0049] Reference Figure 3 and Figure 4One end of the first connecting rod 3 is rotatably connected to the hinge cup 2, and the other end is movably connected to the transmission rod 6. Specifically, the end of the first connecting rod 3 near the transmission rod 6 is also provided with a first connecting shaft 31 and a second connecting shaft 32. The first connecting shaft 31 is riveted to the opposite side walls of the first connecting rod 3. A roller 311 is rotatably mounted on the first connecting shaft 31. The roller 311 is usually a cylindrical wheel made of wear-resistant rubber or plastic. For scenarios requiring a quiet effect, a rubber roller 311 with an anti-slip pattern can be selected.

[0050] The second connecting shaft 32 passes through the side wall of the first connecting rod 3 and the main arm 1. The two ends of the second connecting shaft 32 are fixed to the opposite side walls of the main arm 1, so that the first connecting rod 3 can be rotatably connected to the main arm 1 through the second connecting shaft 32. Moreover, the two ends of the second connecting shaft 32 are respectively fitted with buffer pads 321, which are placed between the main arm 1 and the first connecting rod 3. Therefore, the second connecting shaft 32 and the double needle 21 respectively bear the force of the first connecting rod 3 when it is in the open or closed state. The buffer pads 321 can effectively buffer the impact force between the first connecting rod 3 and the main arm 1, reducing wear and noise between them.

[0051] The first link 3 includes a semi-enclosed hook 33, with the opening of the hook 33 facing the main arm 1. Correspondingly, the transmission rod 6 includes an L-shaped hook 61 and a receiving part 62. The hook 61 is fixed to one end of the receiving part 62 near the first link 3, so that the hook 61 and the hook 33 are movably engaged. When the door panel is opened and closed, this movable engagement method can stably and reliably transmit force. With the cooperation of the spring 5 and the buffer 7, the hook 61 and the hook 33 can automatically switch between two states: separation and close contact, ensuring the continuity of transmission.

[0052] Furthermore, the receiving part 62 includes a retaining edge 621, a top surface 622, and a guide hole. The cylinder of the buffer 7 is fixed on the top surface 622. The top surface 622 is not closed, providing a certain guiding and supporting function for the buffer 7. The retaining edge 621 is fixed around the edge of the top surface 622 to protect the buffer 7. The guide hole is opened through the retaining edge 621. The output rod of the buffer 7 passes through the guide hole and is assembled with the main arm 1.

[0053] The main arm 1 includes a third connecting shaft 16 and a fourth connecting shaft 17. Specifically, the end of the main arm 1 is provided with a first connecting hole, a second connecting hole and a third connecting hole, such that the fourth connecting shaft 17 passes through the third connecting hole, the second connecting shaft 32 passes through the second connecting hole, and the third connecting shaft 16 passes through the first connecting hole. The third connecting shaft 16, the second connecting shaft 32 and the fourth connecting shaft 17 are arranged in a triangular distribution, and the multiple shafts are arranged in a spatial parallel manner.

[0054] In this application, the end of the second link 4 away from the hinge cup 2 is rotatably connected to the main arm 1 through the third connecting shaft 16. The main arm 1 has a first clearance cavity, and the transmission rod 6 is disposed in the first clearance cavity. The second link 4 has a second clearance cavity, and the first link 3 is disposed in the second clearance cavity. The design of the first clearance cavity and the second clearance cavity ensures that the links and the transmission rod 6 will not interfere with each other during the movement, providing sufficient space for the movement of the entire hinge structure and ensuring the smooth opening and closing of the door panel.

[0055] To further optimize the internal structural layout of the hinge and make the installation of each component more compact and reasonable, refer to Figure 4 and Figure 5 Spring 5 is sleeved on the outer wall of the fourth connecting shaft 17. Spring 5 includes a tongue and a retaining angle, so that the tongue of spring 5 abuts against the roller 311 and the retaining angle of spring 5 is assembled with the main arm 1. The main arm 1 includes a front and a back, which are two opposite sides of the main arm 1. A long groove 12 is opened in the middle of the back. The long groove 12 is part of the first clearance cavity. A limiting inclined surface 13 is provided at one end of the long groove 12 near the fourth connecting shaft 17. The two limiting inclined surfaces 13 are symmetrically arranged along the long central axis of the long groove 12. The two retaining angles of spring 5 are respectively assembled with the corresponding limiting inclined surfaces 13.

[0056] A mounting plate 14 and a directional component 15 are also fixed on the back of the main arm 1. The mounting plate 14 is fixed at one end of the long groove 12 near the spring 5 and is set between two limiting inclined surfaces 13. The directional component 15 is detachably covered on the long groove 12. One end of the transmission rod 6 is slidably connected to the long groove 12. The buffer 7 is installed in the receiving cavity formed by the transmission rod 6, the mounting plate 14 and the directional component 15. The end of the cylinder of the buffer 7 is assembled with the side of the mounting plate 14. The output rod of the buffer 7 passes through the guide hole and is assembled with the side of the long groove 12.

[0057] The directional component 15 includes rivets and fixing plates. After the buffer 7 is installed in the receiving part 62 of the transmission rod 6, the fixing plate is fixed to the main arm 1 by multiple rivets. The fixing plate is on the back side and can limit the position of the buffer 7, preventing radial runout when the buffer 7 is started, and ensuring the operational stability of the buffer 7.

[0058] In this application, when the door is in the open state, the spring 5 has its maximum force at a compression angle of 55°. The direction of the force applied by the spring 5 is perpendicular to the length direction of the second connecting shaft 32, so the force of the spring 5 acts on the second connecting shaft 32. At this time, the buffer 7 is in the extended state, and the hook 33 of the first connecting rod 3 is separated from the hook 61 of the transmission rod 6. Conversely, when the door is in the closed state, the spring 5 has its minimum force at an energy release angle of 80°. The direction of the force applied by the spring 5 forms an acute angle with the length direction of the second connecting shaft 32, so the force of the spring 5 acts on the second connecting shaft 32. At this time, the buffer 7 is in the retracted state, and the hook 33 of the first connecting rod 3 is in close contact with the hook 61 of the transmission rod 6. In this application, through the process changes in the angle of spring 5, the length of buffer 7, and the precise contact between hook 33 and hook 61, the hinge as a whole exhibits automatic closing and buffering capabilities, providing a stable and comfortable operating experience when the door panel is opened and closed, improving the convenience and comfort of the user in using the door, reducing the collision and noise caused by the rapid opening and closing of the door panel, and helping to extend the service life of the door panel and hinge.

[0059] Reference Figure 3 and Figure 4 At the bottom of the main arm 1, a first base 8 and a second base 9 are also provided. The second base 9 is located on the back of the main arm 1. A sliding assembly 104 is provided between the main arm 1 and the first base 8. The first base 8 slides with the main arm 1 in the length direction through the sliding assembly 104. Specifically, the sliding assembly 104 includes an L-shaped groove formed on the back of the main arm 1. Two grooves are symmetrically arranged along the long center line of the main arm 1. The first base 8 has a U-shaped cover structure, so that the first base 8 is arranged opposite to the main arm 1. The two sides of the first base 8 slide into the grooves that are close to it.

[0060] In this application, the internal cavity formed between the first base 8 and the main arm 1 is used to house the transmission rod 6, the buffer 7, the spring 5, and related assembly structures. Compared with the prior art, the spring 5 in the prior art is mostly directly assembled with the connecting rod assembly, occupying the external space of the hinge cup 2 or the connecting rod. In this application, the spring 5 is sleeved on the outer wall of the fourth connecting shaft 17 of the main arm 1, with the tongue pressing against the roller 311 of the first connecting rod 3, and the locking angle is positioned by the limiting inclined surface 13 of the long groove 12 on the back of the main arm 1. This design utilizes the structural space of the main arm 1 itself, avoiding the spring 5 being externally attached and occupying extra volume, and reducing the compression on the internal space of the connecting rod. At the same time, the buffer 7 in the prior art often protrudes outward from the hinge body. In this application, the buffer 7 is installed in the receiving cavity formed by the transmission rod 6, the mounting plate 14, and the directional member 15, and the transmission rod 6 is embedded in the first clearance cavity of the main arm 1, so that the buffer 7 is completely wrapped in the internal space, rather than being externally attached, significantly reducing the overall thickness of the hinge.

[0061] Reference Figure 3 and Figure 4 To further improve the flexibility of the hinge application, in this application, a height adjustment component 101 and a length adjustment component 102 are provided between the first base 8 and the main arm 1, and a width adjustment component 103 is provided between the second base 9 and the main arm 1. Specifically, an assembly groove is provided on the side of the first base 8 away from the main arm 1, and the second base 9 is installed in the assembly groove. A positioning strip is fixed in the assembly groove. A positioning groove is provided on the second base 9, and the positioning strip is inserted into the positioning groove. Furthermore, a connecting hook is fixed on the end of the second base 9 away from the hinge cup 2. The connecting hook engages with the first base 8 to improve the connection stability between the two.

[0062] The height adjustment component 101 is a screw, and a length guide groove is formed through the first base 8. The extension direction of the length guide groove is consistent with the extension direction of the slide groove. The head of the screw is engaged with the front of the main arm 1, and the end of the screw is riveted to the first base 8. The screw can move within a certain range along the length guide groove, and the threaded part of the screw is threadedly connected to the main arm 1. In application, by rotating the screw, the height of the first base 8 relative to the main arm 1 can be adjusted to adapt to the installation requirements of different door panels.

[0063] The length adjusting member 102 and the width adjusting member 103 have the same structure, both being eccentric pins. The user can adjust the length of the eccentric pin according to the actual situation. In this application, the length of the width adjusting member 103 is greater than the length adjusting member 102. Therefore, the length adjusting member 102 is connected between the first base 8 and the main arm 1, and the width adjusting member 103 is connected between the second base 9 and the main arm 1. During specific installation, through slots need to be opened on the main arm 1, the first base 8, and the second base 9 to provide rotational clearance space for the corresponding eccentric pins. Then, the eccentric pins are installed by passing through the through slots on the main arm 1, the first base 8, and the second base 9 respectively.

[0064] When it is necessary to adjust the length between the main arm 1 and the first base 8, the eccentric pin of the length adjustment component 102 is rotated. The eccentric structure of the eccentric pin causes the first base 8 to be displaced relative to the main arm 1 in the length direction, thereby realizing the length adjustment to adapt to the dimensional errors in the length direction of different cabinets and door panels. At this time, the height adjustment component 101 can move in the length guide groove, thereby providing a certain guiding effect.

[0065] Furthermore, in this application, a width guide groove is provided on the first base 8, aligning the width direction of the width guide groove with that of the main arm 1. A width guide pin is riveted to the second base 9, passing through the width guide groove. Therefore, when the user adjusts the width deviation between the second base 9 and the main arm 1, rotating the eccentric pin of the width adjustment component 103, and utilizing the eccentricity of the eccentric pin, allows the second base 9 to move relative to the main arm 1 in the width direction, thereby adjusting the hinge's width dimension. At this time, the width guide pin can move within the width guide groove, providing a certain guiding effect, enabling the hinge to adapt to door panels and cabinets of different widths.

[0066] Therefore, during the installation of the entire surface-mounted hinge structure, due to the existence of various adjustment mechanisms, even if there are certain dimensional deviations in the door panel and cabinet during the manufacturing process, or slight deformations after long-term use, they can be flexibly adjusted through the height adjustment component 101, length adjustment component 102, width adjustment component 103, and sliding component 104. Thus, it can be applied to door panels and cabinets of various specifications and qualities, greatly improving its versatility and applicability, and reducing installation difficulties and usage problems caused by size mismatch.

[0067] The above are all preferred embodiments of this application. These embodiments are merely explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A surface-mounted hinge structure, characterized in that, It includes the main boom (1), hinge cup (2), first link (3), second link (4), spring (5), transmission rod (6), and buffer (7), among which, One end of the first connecting rod (3) is rotatably connected to the hinge cup (2), and the other end is movably connected to the transmission rod (6); The first connecting rod (3) is also provided with a first connecting shaft (31) and a second connecting shaft (32) at one end near the transmission rod (6). A roller (311) is rotatably mounted on the first connecting shaft (31). The first connecting rod (3) is rotatably connected to the main arm (1) through the second connecting shaft (32). The buffer (7) is disposed between the main arm (1) and the transmission rod (6) to provide a buffering effect on the movement of the transmission rod (6); The main arm (1) is provided with a third connecting shaft (16) and a fourth connecting shaft (17); One end of the second connecting rod (4) is rotatably connected to the hinge cup (2), and the other end is rotatably connected to the main arm (1) through the third connecting shaft (16); The spring (5) is sleeved on the outer wall of the fourth connecting shaft (17), and the tongue of the spring (5) abuts against the roller (311), and the retaining angle of the spring (5) is assembled with the main arm (1); The main arm (1) has a first clearance cavity, and the transmission rod (6) is disposed in the first clearance cavity; The second link (4) has a second clearance cavity, and the first link (3) is disposed in the second clearance cavity.

2. The exposed hinge structure according to claim 1, characterized in that, The main arm (1), hinge cup (2), first connecting rod (3), and second connecting rod (4) are assembled to form a hinge main body assembly. A third clearance cavity is provided on the hinge cup (2), which provides clearance space for the hinge main body assembly.

3. The exposed hinge structure according to claim 1, characterized in that, The hinge cup (2) has a first through hole and a second through hole on its side wall. The end of the second connecting rod (4) has a second mating hole. The end of the first connecting rod (3) has a first mating hole. A U-shaped double needle (21) is inserted into the hinge cup (2), so that one end of the double needle (21) passes through the first through hole and the first mating hole at the same time, and the other end passes through the second through hole and the second mating hole at the same time.

4. The exposed hinge structure according to claim 1, characterized in that, The transmission rod (6) includes an L-shaped hook (61), and the first connecting rod (3) includes a semi-enclosed pull hook (33), and the hook (61) and the pull hook (33) are movably engaged.

5. The exposed hinge structure according to claim 4, characterized in that, The transmission rod (6) includes a receiving part (62), which includes a retaining edge (621), a top surface (622), and a guide hole. The cylinder of the buffer (7) is fixed on the top surface (622). The retaining edge (621) is fixed around the edge of the top surface (622) to provide protection for the buffer (7). The guide hole is opened through the retaining edge (621). The output rod of the buffer (7) passes through the guide hole and is assembled with the main arm (1).

6. The exposed hinge structure according to claim 1, characterized in that, The two ends of the second connecting shaft (32) are respectively fitted with buffer pads (321), and the buffer pads (321) are disposed between the main arm (1) and the first connecting rod (3).

7. The exposed hinge structure according to claim 1, characterized in that, The main arm (1) has a first connecting hole, a second connecting hole and a third connecting hole at its end. The fourth connecting shaft (17) passes through the third connecting hole, the second connecting shaft (32) passes through the second connecting hole, and the third connecting shaft (16) passes through the first connecting hole, so that the third connecting shaft (16), the second connecting shaft (32) and the fourth connecting shaft (17) are arranged in a triangular distribution and are parallel to each other.

8. The exposed hinge structure according to claim 5, characterized in that, It also includes a first base (8), which is located at the bottom of the main arm (1), and a height adjustment member (101) is provided between the two to adjust the distance between the first base (8) and the main arm (1).

9. A surface-mounted hinge structure according to claim 8, characterized in that, A length adjustment member (102) is provided between the first base (8) and the main arm (1) to adjust the length deviation between the first base (8) and the main arm (1).

10. A surface-mounted hinge structure according to claim 8, characterized in that, It also includes a second base (9), and the first base (8) has an assembly groove on the side away from the main arm (1), and the second base (9) is installed in the assembly groove.

11. The exposed hinge structure according to claim 10, characterized in that, A positioning strip is fixed in the assembly groove, and a positioning groove is provided on the second base (9), and the positioning strip is inserted into the positioning groove.

12. The exposed hinge structure according to claim 11, characterized in that, A width adjustment component (103) is provided between the second base (9) and the main arm (1) to adjust the width deviation between the second base (9) and the main arm (1).

13. The exposed hinge structure according to claim 11, characterized in that, The main arm (1) includes a front and a back, which are two opposite sides of the main arm (1). The back faces the first base (8). A long groove (12) is provided in the middle of the back. A limiting inclined surface (13) is provided at one end of the long groove (12) near the fourth connecting shaft (17). The two limiting inclined surfaces (13) are symmetrically arranged along the long central axis of the long groove (12). The two locking angles of the spring (5) are respectively assembled with the corresponding limiting inclined surfaces (13).

14. The exposed hinge structure according to claim 13, characterized in that, A mounting platform (14) and a directional component (15) are also fixed on the back of the main arm (1). The mounting platform (14) is fixed between the two limiting inclined surfaces (13). The directional component (15) is detachably covered on the long groove (12). One end of the transmission rod (6) is slidably connected to the long groove (12). The buffer (7) is installed in the receiving cavity formed by the transmission rod (6), the mounting platform (14) and the directional component (15). The end of the cylinder of the buffer (7) is assembled with the side of the mounting platform (14). The output rod of the buffer (7) passes through the guide hole and is assembled with the side of the long groove (12).

15. A surface-mounted hinge structure according to claim 11, characterized in that, A sliding component (104) is provided between the main arm (1) and the first base (8), and the first base (8) slides with the main arm (1) in the length direction through the sliding component (104).

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