Hinge suitable for thick door plate

Abstract

The utility model relates to the technical field of hinges, in particular to a hinge suitable for a thick door plate, which comprises a hinge body, the hinge body comprises a hinge cup, a hinge arm, an outer rocker arm, an inner rocker arm and a U-shaped pin, the outer rocker arm and the inner rocker arm are both rotatably assembled between the hinge cup and the hinge arm, and the outer rocker arm is located on the outer side of the inner rocker arm. The two ends of the U-shaped pin are inserted into the side wall of the hinge cup respectively and used for rotationally assembling one end of the outer rocker arm and one end of the inner rocker arm respectively, and the hinge distance between the inner rocker arm and the hinge cup and the hinge distance between the outer rocker arm and the hinge cup are increased by increasing the axis distance between the two ends of the U-shaped pin, so that the swing arm length of the hinge is increased, and the swing range of the inner rocker arm is effectively widened; the hinge can be suitable for door plates with different thicknesses, and the compatibility of the hinge is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a hinge suitable for thick door panels. Background Art

[0002] A hinge is a mechanical device used to connect two solid bodies and allow them to rotate relative to each other. It is commonly used in furniture to open or close cabinet doors. Hinges are mainly divided into 26-cup hinges, 35-cup hinges, and 40-cup hinges according to the size of the hinge cup opening. Hinges with different hinge cups are used in furniture with different door panel thicknesses.

[0003] On the market, 35-cup hinges are commonly used, which are used on door panels with a thickness of less than 20mm. If the door panel is thicker (greater than 20mm), the hinges in the existing technology will have a swing arm that is too short and the door panel is thicker. When the door panel is opened and closed, the door panel and the side panel will interfere with each other, causing the door panel to scrape against the side panel of the cabinet, affecting the opening and closing of the door panel. As a result, the 35-cup hinges in the existing technology are not compatible with the installation of thick door panels. Therefore, hinges with large hinge cups are needed for the installation of thick door panels, because large hinge cups have larger openings and can accommodate longer hinge swing arms.

[0004] However, when hinges with different cup hole specifications are used to match door panels of different thicknesses, the following problems arise: In terms of installation and use, hinges with different hinge cup specifications require drill bits of different sizes to drill holes in the door panel due to the different opening sizes of their hinge cups for hinge installation. Installers need to carry multiple sets of drill bits, which increases the burden and difficulty of carrying them when going out for installation. In addition, carrying multiple sets of drill bits increases the risk of errors and confusion for installers. Using an incorrect drill bit will cause the hole size to not match the hinge cup size, resulting in abnormal hinge installation. In terms of production and assembly, hinge cups of different specifications require different tooling fixtures to correspond, which increases the difficulty of production and assembly, and increases warehousing costs and the complexity of procurement management.

[0005] Therefore, it is necessary to design a hinge that uses the same hinge cup and is compatible with thick door panels. Utility Model Content

[0006] In order to solve at least one technical problem in the background technology, the present application provides a hinge suitable for thick door panels.

[0007] The utility model provides a hinge suitable for thick door panels adopting the following technical solutions:

[0008] A hinge suitable for thick door panels, comprising a hinge body, wherein the hinge body comprises a hinge cup, a hinge arm, an outer rocker arm, an inner rocker arm, and a U-shaped pin. The outer rocker arm and the inner rocker arm are both rotatably assembled between the hinge cup and the hinge arm, and the outer rocker arm is located on the outside of the inner rocker arm. The two ends of the U-shaped pin are respectively inserted into the side walls of the hinge cup, and the two ends of the U-shaped pin are respectively used to rotatably assemble one end of the outer rocker arm and one end of the inner rocker arm. The distance between the two end axes of the U-shaped pin is L1, the distance between the two ends of the hinged connection of the outer rocker arm, the hinge arm and the hinge cup is L2, the opening diameter of the hinge cup is D, L1 = (20% ~ 25%) × D, L2 = (57% ~ 60%) × D.

[0009] Preferably, the outer rocker arm is provided with an outward expansion portion, and the outward expansion portion is protruded along the lateral sides of the outer rocker arm. When the hinge is in the expanded state, the outward expansion portion is located above the hinge cup.

[0010] Preferably, a first hinge hole and a second hinge hole are respectively provided at both ends of the inner rocker arm, the first hinge hole is rotatably assembled with one end of the U-shaped pin, and the second hinge hole is rotatably assembled with the hinge arm, and the straight-line distance between the center of the first hinge hole and the center of the second hinge hole is L3, L3 = (50% ~ 53%) × D.

[0011] Preferably, the bottom wall of the inner rocker arm is provided with an avoidance groove, and the avoidance groove is located between the first hinge hole and the second hinge hole. When the hinge is in the expanded state, the inner top wall of the avoidance groove is located above the hinge cup.

[0012] Preferably, the hinge body also includes a rotating shaft, the hinge arm is provided with a lug portion protruding downward, the rotating shaft is passed through the inner wall of the second hinge hole, and the two ends of the rotating shaft are respectively connected to the lug portion, and an avoidance space is formed between the lug portion and the outer wall of the hinge cup.

[0013] Preferably, the vertical distance between the center of the first hinge hole and the center of the second hinge hole is L4, where L4 = (13% to 15%) × L3.

[0014] Preferably, one end of the outer rocker arm is provided with a third hinge hole for rotatably assembling with the other end of the U-shaped pin, and the other end of the outer rocker arm is provided with a fourth hinge hole for rotatably assembling with the hinge arm. When the hinge is in an expanded state, the center of the third hinge hole, the center of the first hinge hole, and the center of the fourth hinge hole are on the same straight line.

[0015] Preferably, the hinge body also includes a hydraulic cylinder, a support rod, a support arm, and a transmission arm. The middle part of the support arm is rotatably assembled with the support rod, and the two ends of the support rod are respectively connected to the two side walls of the hinge arm. One end of the support arm is connected to the push rod of the hydraulic cylinder, and the other end of the support arm is hinged to one end of the transmission arm, and the other end of the transmission arm is hinged to the inner rocker arm.

[0016] Preferably, the two side walls of the transmission arm are expanded outward from the end close to the inner rocker arm toward the end close to the support arm to form an activity space, and the support arm moves back and forth toward the activity space. When the hinge is in the expanded state, part of the transmission arm is located in the activity space.

[0017] Preferably, the transmission arm and the inner rocker arm are hinged to form a hinge, the line between the center of the hinge and the center of the second hinge hole is line segment A, the line between the center of the first hinge hole and the center of the second hinge hole is line segment B, line segment A and line segment B form an angle b, and angle b is 128°~135°.

[0018] The beneficial effects of the utility model are:

[0019] By increasing the axial distance between the two ends of the U-shaped pin, the hinge distance between the inner rocker arm and the outer rocker arm and the hinge cup is increased, thereby increasing the swing arm length of the hinge, making the hinge suitable for door panels of different thicknesses, improving the compatibility of the hinge, effectively avoiding interference between the door panels and the side panels, preventing the door panels from scratching the cabinet side panels, and reducing installation problems caused by different door panel thicknesses; secondly, since the same specification of hinge cup is used, it can adapt to the installation requirements of door panels of different thicknesses and conventional door panels. The installer only needs to carry one size of drill bit, which reduces the burden and difficulty of outdoor installation and improves installation efficiency. The use of a uniform size hinge cup reduces the risk of installers using the wrong drill bit and ensures the stability of the hinge installation; in addition, in terms of production and assembly, hinges with the same hinge cup do not need to replace tooling fixtures, which reduces the difficulty of production and assembly and improves production efficiency. Hinges of uniform specifications reduce inventory types, reduce warehousing costs and the complexity of procurement management.

[0020] Through the first hinge hole and the second hinge hole at both ends of the inner rocker arm, in conjunction with the extended U-shaped pin, the swing range of the inner rocker arm is effectively improved, and the opening restriction of the door panel caused by insufficient swing distance is reduced, so that the hinge can be suitable for the installation of thick door panels, improving the overall movement smoothness of the hinge and reducing the resistance to the opening and closing of the door panel.

[0021] By expanding the two side walls of the transmission arm to form an activity space, the swing range of the hinge arm is improved, the risk of interference between the swing arm and the transmission arm is reduced, and the movement flexibility of the hinge is increased. Secondly, the design of the transmission arm allows it to move back and forth in the activity space, which helps to maximize the swing angle of the hinge, reduce the movement restrictions caused by interference, and improve the smoothness of opening and closing of the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereogram in the embodiment of the present application;

[0023] Figure 2 This is the main view in the embodiment of the present application;

[0024] Figure 3 is a sectional perspective view in an embodiment of the present application;

[0025] Figure 4 This is the first partial split diagram in the embodiment of the present application;

[0026] Figure 5 This is the second partial split diagram in the embodiment of the present application;

[0027] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle;

[0028] Figure 7 is a top view of the outer rocker arm in an embodiment of the present application;

[0029] Figure 8 This is a front view of the outer rocker arm in the embodiment of the present application;

[0030] Figure 9 This is a front view of the inner rocker arm in the embodiment of the present application;

[0031] Figure 10 is a top view of the hinge cup in an embodiment of the present application;

[0032] Figure 11 2 is a diagram of the hinge closed state in an embodiment of the present application;

[0033] Figure 12 It is a schematic diagram of the installation of a 35-cup hinge in the prior art;

[0034] Figure 13 It is a schematic diagram of the installation of a 40-cup hinge in the prior art;

[0035] Figure 14 This is a schematic diagram of the installation of the 35-cup hinge in Example 3 of the present application;

[0036] Figure 15 3. This is a comparison diagram of a 35-cup hinge in the prior art and a 35-cup hinge in Example 3 of the present application;

[0037] Figure 16 This is a schematic diagram of the unfolded state of the 35-cup hinge in Example 3 of the present application.

[0038] Explanation of the accompanying drawings: 1. Hinge cup; 101. Accommodating groove; 2. Hinge arm; 201. Lug portion; 202. Avoidance space; 203. Avoidance surface; 3. Outer rocker arm; 301. Outward expansion portion; 302. Third hinge hole; 303. Fourth hinge hole; 4. Inner rocker arm; 401. First hinge hole; 402. Second hinge hole; 403. Avoidance groove; 404. Hinge; 5. U-shaped pin; 601. Rotating shaft; 602. Connecting shaft; 7. Support arm; 701. Support rod; 8. Transmission arm; 801. Activity space; 901. Hydraulic cylinder; 902. Torsion spring; 903. Pressure rod. DETAILED DESCRIPTION

[0039] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that each technical feature and the overall technical solution of the present application can be understood intuitively and vividly, but it cannot be understood as a limitation on the scope of protection of the present application.

[0040] In the description of this application, if there is a description of orientation, such as "upper", "lower", "front", "back", "left", "right", etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on this application. When a feature is referred to as being "disposed", "fixed", or "connected" to another feature, it can be directly disposed, fixed, or connected to the other feature, or indirectly disposed, fixed, or connected to the other feature.

[0041] In the description of this application, if the description involves "X axis", "Y axis", "Z axis", "horizontal", "longitudinal" and "vertical", it is based on the attached Figure 4 In the orientation or position relationship shown, the X-axis represents the horizontal direction, the Y-axis represents the longitudinal direction, and the Z-axis represents the vertical direction.

[0042] In the description of this application, if the word "several" is mentioned, it means one or more; if the word "multiple" is mentioned, it means more than two; if the word "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if the word "above," "below," or "within" is mentioned, it should be understood as including the number itself. If the word "first" or "second" is mentioned, it should be understood as distinguishing technical features, and should not be understood as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0043] In addition, unless otherwise defined, the technical terms and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art. The terms used in this application are only for describing specific embodiments and are not intended to limit this application. It should be understood that when used in this specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0044] Example 1: Figure 1-11As shown, a hinge suitable for thick door panels includes a hinge body, characterized in that the hinge body includes a hinge cup 1, a hinge arm 2, an outer rocker arm 3, an inner rocker arm 4, and a U-shaped pin 5. The outer rocker arm 3 and the inner rocker arm 4 are both rotatably assembled between the hinge cup 1 and the hinge arm 2, and the outer rocker arm 3 is located outside the inner rocker arm 4. The two ends of the U-shaped pin 5 are respectively inserted into the side walls of the hinge cup 1, and the two ends of the U-shaped pin 5 are respectively used to rotatably assemble one end of the outer rocker arm 3 and one end of the inner rocker arm 4. The distance between the two ends of the axis is L1, the distance between the two ends of the hinge of the outer rocker arm 3 and the hinge arm 2 and the hinge cup 1 is L2, the opening diameter of the hinge cup 1 is D, L1 = (20% ~ 25%) × D, preferably, L = 22.8% × D, L2 = (57% ~ 60%) × D, preferably, L = 58.7% × D, by increasing the axis distance at both ends of the U-shaped pin 5, the hinge distance between the inner rocker arm 4 and the outer rocker arm 3 and the hinge cup 1 is increased in the same hinge cup 1 size. , thereby increasing the length of the hinge arm 7, so that the hinge can be applied to door panels of different thicknesses, improving the compatibility of the hinge, effectively avoiding interference between the door panel and the side panel, preventing the door panel from scratching the cabinet side panel, and no need to replace the hinge with a larger hinge cup 1 specification in order to be compatible with thick door panels, thereby reducing the installation problems caused by different door panel thicknesses; secondly, since the same specification of hinge cup 1 is used, it can adapt to the installation requirements of door panels of different thicknesses and conventional door panels. The installer only needs to carry one size of drill bit, which reduces the burden of installation and carrying difficulty when going out, improves installation efficiency, and uses a unified size of hinge cup 1, reduces the risk of installers using the wrong drill bit, and ensures the stability of hinge installation; in addition, in terms of production and assembly, hinges with the same hinge cup 1 do not need to replace tooling fixtures, which reduces the difficulty of production and assembly and improves production efficiency. Hinges of unified specifications reduce inventory types, reduce warehousing costs and the complexity of procurement management.

[0045] It is worth mentioning that the thick door panel mentioned in this embodiment refers to a door panel with a thickness of 20 to 26 mm, and a conventional door panel refers to a door panel with a thickness of 14 to 20 mm.

[0046] In the specific installation of the U-shaped pin 5, an angle a is formed between the connecting line of the two ends of the U-shaped pin 5 and the bottom wall of the hinge cup 1, and the angle a = 45°±2°. Preferably, the angle a is 45°, and the upward end of the U-shaped pin 5 is arranged close to the top wall of the hinge cup 1, and a gap is provided between the downward end of the U-shaped pin 5 and the bottom wall of the hinge cup 1 to prevent the outer rocker arm 3 from rotating when the hinge is closed.

[0047] Since the hinge length of the outer rocker arm 3 is increased, that is, the overall length of the outer rocker arm 3 is lengthened, to ensure the rigidity of the lengthened outer rocker arm 3, the outer rocker arm 3 is provided with an outward expansion portion 301. The outward expansion portion 301 is provided along the lateral sides of the outer rocker arm 3 and is located near the hinge arm 2. When the hinge is in the extended state, the outward expansion portion 301 is located above the hinge cup 1. ( / / The provision of the outward expansion portion 301 improves the overall rigidity of the outer rocker arm 3, reduces the risk of bending when supporting the door panel, and reduces the failure rate of the hinge during use. Secondly, the location of the outward expansion portion 301 near the hinge arm 2 increases the supporting force of the outer rocker arm 3, reduces deformation of the outer rocker arm 3 caused by the weight of the door panel, and reduces instability when the door panel is opened and closed. Thirdly, the location of the outward expansion portion 301 above the hinge cup 1 improves the structural stability of the hinge in the extended state, reduces the risk of interference between the outward expansion portion 301 and the inner wall of the hinge cup 1, and reduces the problem of jamming when the hinge is extended.

[0048] Furthermore, in order to cooperate with the lengthened swing distance of the outer rocker arm 3, in terms of the specific structure of the inner rocker arm 4, a first hinge hole 401 and a second hinge hole 402 are respectively provided at both ends of the inner rocker arm 4, the first hinge hole 401 is rotatably assembled with one end of the U-shaped pin 5, and the second hinge hole 402 is rotatably assembled with the hinge arm 2, and the straight-line distance between the center of the first hinge hole 401 and the center of the second hinge hole 402 is L3, L3 = (50% ~ 53%) × D, preferably, L3 = 51.7% × D, through the first hinge hole 401 and the second hinge hole 402 at both ends of the inner rocker arm 4, in conjunction with the lengthened U-shaped pin 5, the swing range of the inner rocker arm 4 is effectively improved, and the door panel opening restriction caused by insufficient swing distance is reduced, so that the hinge can be suitable for the installation of thick door panels, thereby improving the overall movement smoothness of the hinge and reducing the resistance to the opening and closing of the door panels.

[0049] In order to avoid interference between the bottom wall of the inner rocker arm 4 and the door panel when the hinge is installed on a thick door panel, in order to solve the above technical problems, an avoidance groove 403 is provided on the bottom wall of the inner rocker arm 4. The avoidance groove 403 is located between the first hinge hole 401 and the second hinge hole 402. When the hinge is in the expanded state, the inner top wall of the avoidance groove 403 is located above the hinge cup 1. By providing the avoidance groove 403 on the bottom wall of the inner rocker arm 4, the compatibility between the inner rocker arm 4 and the thick door panel is improved, the interference problem is avoided, and the possibility of interference and friction between the inner rocker arm 4 and the edge of the door panel when opening the door panel is reduced, thereby improving the smoothness of the hinge during the opening and closing process of the door panel and reducing the obstruction to the movement of the door panel.

[0050] Similarly, in order to avoid interference between the bottom wall of the inner rocker arm 4 and the door panel when the hinge is installed in a thick door panel, the hinge arm 2 needs to avoid the door panel. In terms of the specific structure of the rotational assembly of the inner rocker arm 4 and the hinge arm 2, the hinge body also includes a rotating shaft 601, and the hinge arm 2 is provided with a lug portion 201 protruding downward. The rotating shaft 601 is passed through the inner wall of the second hinge hole 402, and the two ends of the rotating shaft 601 are respectively connected to the lug portion 201. An avoidance space 202 is formed between the lug portion 201 and the outer wall of the hinge cup 1. When the hinge is projected along its horizontal direction, as shown in FIG. Figure 2 , to avoid the space and the avoidance recess from overlapping. By setting the avoidance space, the direction of interference between the door panel and the hinge arm 2 is avoided when installing a thick door panel. By setting the rotating shaft 601 and the lug 201, the rotational assembly stability between the hinge arm 2 and the inner rocker arm 4 is improved. An avoidance space 202 is formed between the lug 201 and the hinge cup 1, which avoids interference between the thick door panel and the hinge arm 2 and reduces the risk of friction between the hinge arm 2 and the door panel.

[0051] In order to ensure the straight-line distance between the center of the first hinge hole 401 and the center of the second hinge hole 402, and reduce the occupation of the longitudinal space of the hinge arm 2 so that the hinge arm 2 can be installed with parts such as the buffer cylinder, the first hinge hole 401 and the second hinge hole 402 are arranged up and down. In terms of the vertical distance between the first hinge hole 401 and the second hinge hole 402, the vertical distance between the center of the first hinge hole 401 and the center of the second hinge hole 402 is L4, L4 = (13% to 15%) × L3, preferably, L4 = 15.2% × L3. By adopting the first hinge hole 401 and the second hinge hole 402 arranged up and down, the straight-line distance between the hole centers is ensured, the longitudinal space occupied by the hinge arm 2 is reduced, and the utilization rate of the internal space of the hinge arm 2 is improved, so that parts such as the buffer cylinder can be installed, and the functionality of the hinge is increased. Secondly, by setting the vertical distance L4, the structural layout of the hinge arm 2 is optimized, the overall size of the hinge arm 2 is reduced, and the possibility of installing the hinge in a compact space is improved.

[0052] Regarding the specific assembly of the outer rocker arm 3, one end of the outer rocker arm 3 is provided with a third hinge hole 302 for rotationally assembling with the other end of the U-shaped pin 5, and the other end of the outer rocker arm 3 is provided with a fourth hinge hole 303 for rotationally assembling with the hinge arm 2. When the hinge is in the expanded state, the centers of the third hinge hole 302, the first hinge hole 401, and the fourth hinge hole 303 are on the same straight line. The hinge body also includes a connecting shaft 602, which is inserted into the fourth hinge hole 303 and has its two ends respectively connected to the side walls of the hinge arm 2, thereby achieving rotational assembly of the outer rocker arm 3 and the hinge arm 2. It is worth noting that L2 refers to the distance between the centers of the third hinge hole 302 and the fourth hinge hole 303.

[0053] In order to reduce the noise caused by the door panel hitting the cabinet side panel when the door panel is closed, the hinge body also includes a hydraulic cylinder 901, a support rod 701, a support arm 7, a transmission arm 8, a torsion spring 902, and a pressure rod 903. The middle part of the support arm 7 is rotatably assembled with the support rod 701. The two ends of the support rod 701 are respectively connected to the two side walls of the hinge arm 2. One end of the support arm 7 is connected to the push rod of the hydraulic cylinder 901. The cylinder body of the hydraulic cylinder 901 is assembled in the inner wall of the hinge arm 2. The other end of the support arm 7 is hinged to one end of the transmission arm 8. The other end of the transmission arm 8 is hinged to the inner rocker arm 4 near the second hinge hole 402. One end of the hinge is hinged, the inner ring of the torsion spring 902 is rotatably assembled with the transmission shaft, the pressure rod 903 is connected to the inner rocker arm 4 and is located above the rotating shaft 601, the pressure rod 903 is used to abut one torsion arm of the torsion spring 902, and the other torsion arm of the torsion spring 902 abuts against the inner top wall of the hinge arm 2. Through the assembly of the support rod 701 and the support arm 7, the support arm 7 forms a lever, the inner rocker arm 4 is connected to one end of the lever through the transmission arm 8, and the hydraulic cylinder 901 is connected to the other end of the lever, thereby realizing the buffered opening and closing of the hinge, improving the smoothness and quietness of the opening and closing of the door panel, and enhancing the user experience.

[0054] In order to increase the swing range of the hinge arm 2 and reduce the risk of interference between the support arm 7 and the transmission arm 8, the two side walls of the transmission arm 8 are expanded outward from the end close to the inner rocker arm 4 toward the end close to the support arm 7 to form an active space 801. The support arm 7 moves back and forth toward the active space 801. When the hinge is in the expanded state, part of the transmission arm 8 is located in the active space 801. The active space 801 is formed by the outward expansion of the two side walls of the transmission arm 8, which increases the swing range of the hinge arm 2, reduces the risk of interference between the support arm 7 and the transmission arm 8, and increases the movement flexibility of the hinge. Secondly, the design of the transmission arm 8 enables it to move back and forth in the active space 801, which helps to maximize the swing angle of the hinge, reduces the movement restriction caused by interference, and improves the smoothness of the opening and closing of the door panel.

[0055] In terms of the specific structure of the hinged assembly of the transmission arm 8 and the inner rocker arm 4, the transmission arm 8 and the inner rocker arm 4 are hinged to form a hinge 404, and the line between the center of the hinge 404 and the center of the second hinge hole 402 is a line segment A, and the line between the center of the first hinge hole 401 and the center of the second hinge hole 402 is a line segment B. The line segment A and the line segment B form an angle b, and the angle b is 128°~135°. Preferably, the angle b is 131°, which optimizes the force transmission angle between the transmission arm 8 and the inner rocker arm 4, improves the force transmission efficiency, reduces energy loss, and increases the smoothness of the hinge operation.

[0056] The vertical depth of the hinge cup 1 is L5, where L5 = (1.2-1.4) × L1.

[0057] The hinge cup 1 is provided with a receiving groove 101 for receiving the outer rocker arm 3 , the inner rocker arm 4 and part of the hinge arm 2 , and the longitudinal length of the receiving groove 101 is greater than the length of the inner rocker arm 4 .

[0058] Due to the increase in the size of the inner rocker arm 4, the outer rocker arm 3 and the U-shaped pin 5, the swing range of the hinge arm 2 is increased. In order to avoid the hinge arm 2 from interfering with the inner wall of the accommodating hole when the hinge is closed, thereby causing abnormal hinge closure, an avoidance surface 203 is provided at the upward end of the hinge arm 2. When the hinge is closed, the avoidance surface 203 abuts against the inner wall of the accommodating groove 101.

[0059] Example 2: Figure 1-11 The 35-cup hinge suitable for thick door panels shown in the figure includes a hinge suitable for thick door panels in Example 1, the opening diameter of the hinge cup D = 35 mm, the distance between the two end axes of the U-shaped pin L1 = 8.1 mm, the wire diameter of the U-shaped pin is 2.3 mm, the hinge distance between the two ends of the outer rocker arm and the hinge arm and the hinge cup L2 = 20.6 mm, the straight-line distance between the center of the first hinge hole and the center of the second hinge hole L3 = 18.1 mm, the vertical distance between the center of the first hinge hole and the center of the second hinge hole L4 = 2.7 mm, the vertical depth of the hinge cup L5 = 11 mm, and the distance between the center of the first hinge hole and the bottom wall of the hinge cup is 3.8 mm.

[0060] Example 3: Figure 1-16 As shown, a buffer hinge compatible with 26mm thick door panels includes a 35-cup hinge suitable for thick door panels in Example 2. Data measurements are performed on the installation and use of the hinge in Example 3 and 35-cup and 40-cup hinges in the prior art, and the data in the following table are obtained:

[0061]

[0062] like Figure 12-14 It can be seen that the size of the side panel L1 and door panel L2 that can be installed are compared as follows:

[0063] The 35-cup hinge of this embodiment = the existing 40-cup hinge > the existing 35-cup hinge

[0064] From the above data, we can see that the improved 35-cup hinge can meet the installation requirements of the side plate thickness of the existing 40-cup hinge. That is, in the actual installation process of the hinge, the same specification hinge (35-cup) can meet the use requirements of the larger specification hinge (40-cup). The improved 35-cup hinge can be used to be compatible with the installation of 26mm thick plates, thereby using the same The installation holes reduce the workload of installers who need to replace drill bits of different specifications and sizes when drilling holes, thereby improving the compatibility of the 35-cup hinge of this embodiment. It is worth mentioning that the 35-cup hinge of this embodiment is compatible with side panels with a thickness of L1 = 16 to 26 mm and door panels with a thickness of L2 = 16 to 26 mm, which can cover the installation requirements of existing 35-cup hinges.

[0065] like Figure 15 and Figure 16 As shown, the 35-cup hinge of this embodiment and the existing 35-cup hinge are both installed on the 26mm side panel and the 26mm door panel. When the existing 35-cup hinge is opened to an angle θ=97°, the door panel interferes with the side panel, causing the door panel to be unable to open normally. Therefore, the existing 35-cup hinge is not compatible with a 26mm thick door panel. When the 35-cup hinge of this embodiment is opened to an angle θ=97°, it can be opened normally. Figure 16 The 35-cup hinge of this embodiment can normally make the door panel fully open and close. Therefore, the 35-cup hinge of this embodiment is compatible with the installation of 26mm door panels and ensures the normal opening and closing of the door panels.

[0066] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A hinge suitable for thick door panels, comprising a hinge body, characterized in that: The hinge body includes a hinge cup, a hinge arm, an outer rocker arm, an inner rocker arm, and a U-shaped pin. The outer rocker arm and the inner rocker arm are both rotatably assembled between the hinge cup and the hinge arm, and the outer rocker arm is located on the outside of the inner rocker arm. The two ends of the U-shaped pin are respectively inserted into the side walls of the hinge cup, and the two ends of the U-shaped pin are respectively used to rotatably assemble one end of the outer rocker arm and one end of the inner rocker arm. The distance between the two end axes of the U-shaped pin is L1, and the distance between the two ends of the hinge of the outer rocker arm, the hinge arm and the hinge cup is L2. The opening diameter of the hinge cup is D, L1 = (20% ~ 25%) × D, L2 = (57% ~ 60%) × D.

2. The hinge suitable for thick door panels according to claim 1, characterized in that: The outer rocker arm is provided with an outward expansion portion, and the outward expansion portion is protruded along the lateral sides of the outer rocker arm. When the hinge is in the expanded state, the outward expansion portion is located above the hinge cup.

3. The hinge suitable for thick door panels according to claim 1, characterized in that: A first hinge hole and a second hinge hole are respectively provided at both ends of the inner rocker arm. The first hinge hole is rotatably assembled with one end of the U-shaped pin, and the second hinge hole is rotatably assembled with the hinge arm. The straight-line distance between the center of the first hinge hole and the center of the second hinge hole is L3, and L3 = (50% to 53%) × D.

4. The hinge suitable for thick door panels according to claim 3, characterized in that: The bottom wall of the inner rocker arm is provided with an avoidance groove, and the avoidance groove is located between the first hinge hole and the second hinge hole. When the hinge is in the expanded state, the inner top wall of the avoidance groove is located above the hinge cup.

5. The hinge suitable for thick door panels according to claim 4, characterized in that: The hinge body also includes a rotating shaft, and the hinge arm is provided with a lug portion protruding downward. The rotating shaft is passed through the inner wall of the second hinge hole, and the two ends of the rotating shaft are respectively connected to the lug portion, and an avoidance space is formed between the lug portion and the outer wall of the hinge cup.

6. The hinge suitable for thick door panels according to claim 3, characterized in that: The vertical distance between the center of the first hinge hole and the center of the second hinge hole is L4, where L4 = (13% to 15%) × L3.

7. The hinge suitable for thick door panels according to claim 3, characterized in that: One end of the outer rocker arm is provided with a third hinge hole for rotatably assembling with the other end of the U-shaped pin, and the other end of the outer rocker arm is provided with a fourth hinge hole for rotatably assembling with the hinge arm. When the hinge is in an expanded state, the center of the third hinge hole, the center of the first hinge hole, and the center of the fourth hinge hole are on the same straight line.

8. The hinge suitable for thick door panels according to claim 3, characterized in that: The hinge body also includes a hydraulic cylinder, a support rod, a support arm, and a transmission arm. The middle part of the support arm is rotatably assembled with the support rod, and the two ends of the support rod are respectively connected to the two side walls of the hinge arm. One end of the support arm is connected to the push rod of the hydraulic cylinder, and the other end of the support arm is hinged to one end of the transmission arm, and the other end of the transmission arm is hinged to the inner rocker arm.

9. The hinge suitable for thick door panels according to claim 8, characterized in that: The two side walls of the transmission arm are expanded outward from one end close to the inner rocker arm toward one end close to the support arm to form an activity space. The support arm moves back and forth toward the activity space. When the hinge is in the expanded state, part of the transmission arm is located in the activity space.

10. The hinge suitable for thick door panels according to claim 8, characterized in that: The transmission arm and the inner rocker arm are hinged to form a hinge, the line between the center of the hinge and the center of the second hinge hole is line segment A, the line between the center of the first hinge hole and the center of the second hinge hole is line segment B, line segment A and line segment B form an angle b, and angle b is 128°~135°.

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