Hinge and hinge opening and closing method

Abstract

Disclosed in the present invention are a hinge and a hinge opening and closing method. The hinge uses a first hinge body and a second hinge body that are arranged to slide, so that during pivoting, a first fixing seat pivots and extends out relative to a hinge seat by means of the sliding speed difference between the first hinge body and the second hinge body. Thus, when assembled to a cabinet, a cabinet door can avoid a cabinet body at a rear side and an adjacent cabinet door to pivot at a larger angle.

Description

A hinge and a method for opening and closing the hinge. Technical Field

[0001] This invention belongs to the field of hinges, specifically relating to a hinge and a hinge opening and closing method. Background Technology

[0002] A hinge is a mechanical device used to connect two solids and allow them to rotate relative to each other.

[0003] Hinges are commonly used to connect doors, windows, etc. Existing hinges can be referenced in Chinese Patent No. CN202323125488.4, which discloses a mother-daughter hinge. A connecting piece is used to achieve a flip-connection between the daughter and mother hinges. In practical use, such as when installed on a cabinet, the daughter and mother hinges are fixed to the cabinet body and the cabinet door respectively. The cabinet door can be flipped relative to the cabinet body to open or close the cabinet cavity. Furthermore, cabinets are typically multi-compartment structures, meaning multiple cabinet doors are arranged horizontally on the cabinet body. Each cabinet door flips relative to the cabinet body to open its corresponding cabinet cavity.

[0004] When using existing hinges, the cabinet door can typically rotate at an angle of 90° relative to the cabinet body. Specifically, after the cabinet door rotates outward from a state where it is parallel to the cabinet body and closes the cabinet cavity, it rotates to a state where it is perpendicular to the cabinet body and opens the cabinet cavity. The outer periphery of the cabinet door is positioned by the abutment of the cabinet body and / or one surface of the cabinet door is positioned by the abutment of the outer periphery of the adjacent cabinet door.

[0005] Therefore, when operating inside the cabinet with the cabinet open, the vertical cabinet door obstructs the operator's movements and can interfere with their actions, greatly affecting the comfort of use. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a hinge and a hinge opening and closing method, which employs a sliding first chain and a second chain, such that the first fixed seat flips and extends relative to the chain seat during the flipping process due to the sliding speed difference between the first chain and the second chain. Thus, when assembled into a cabinet, the cabinet door can avoid the rear cabinet and adjacent cabinet doors and flip at a greater angle.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] As a first aspect of the present invention, a hinge is provided, comprising a chain base, a first fixed base, a first chain body, a second chain body, and a linkage member; the first chain body and the second chain body are slidably and movably mounted on the chain base along a first direction, the front end of the first chain body is hinged to the first fixed base to form a first pivot, a first rack is provided on the first chain body, and the first pivot is fixedly disposed relative to the first rack; one end of the linkage member is hinged to the first fixed base to form a second pivot, and the other end of the linkage member is hinged to the second chain body to form a third pivot, the second chain body has a second rack; the first pivot, the second pivot, and the third pivot are non-common. The three pivots are arranged in parallel lines and are all perpendicular to the first direction. A gear assembly is rotatably mounted on the chain seat. The gear assembly meshes between the first rack and the second rack, and the displacement speed ratio N between the first chain and the second chain along the first direction is greater than 1. The setting position of the second pivot relative to the first pivot and the setting position of the third pivot relative to the first pivot are adapted to the displacement speed ratio N between the first chain and the second chain along the first direction. The adaptation means that when the hinge changes between the open and closed states, the displacement speed difference between the first chain and the second chain and the rotational movement of the linkage are adapted to each other, and the components will not jam or damage the parts.

[0009] The present invention is further configured such that the gear assembly is configured to engage the first rack and the second rack in the same direction, thereby ensuring that the first chain and the second chain always move in the same direction.

[0010] The present invention is further configured such that: the gear assembly includes a variable speed gear set and a bridging gear, the variable speed gear set and the bridging gear are respectively rotatably mounted on the chain seat; the variable speed gear set includes a first gear and a second gear, and the ratio of the radius of the first gear to the radius of the second gear is N, the first gear meshes with a first rack, and the second gear meshes with a second rack via the bridging gear.

[0011] The present invention is further configured such that the angle at which the first fixing seat changes from the closed state to the open state is 180°.

[0012] The present invention is further configured such that: one side of the chain seat is provided with an assembly groove extending along a first direction, and the gear assembly is mounted on the side wall of the assembly groove.

[0013] Preferably, the chain seat has a second sliding groove, and the second chain body has second sliders on both sides. The second chain body is inserted into the assembly groove, and the second sliding groove and the second sliders are engaged.

[0014] Preferably, the chain seat has first sliding grooves on both sides of the assembly groove, and first sliders are provided on both sides of the first chain body, with the first sliding grooves and first sliders engaging. More preferably, the first chain body also covers the assembly groove.

[0015] The present invention is further configured such that: the first fixing seat is provided with a connecting groove, and the connecting groove is provided with a first hole group and a second hole group.

[0016] The present invention is further configured such that: the front end of the second chain is bent toward the first chain to form a curved end, and the linkage is hinged to the curved end.

[0017] The present invention is further configured such that: the front end of the first chain body is provided with a spatial region, the spatial region being for the linkage component to move into, that is, the linkage component is assembled in the spatial region.

[0018] As a second aspect of the present invention, a hinge is provided, comprising a chain seat, a first fixed seat, a first chain body, a second chain body, and a linkage member; the first chain body and the second chain body are slidably mounted on the chain seat along a first direction, the front end of the first chain body is hinged to the first fixed seat to form a first pivot, a first rack is provided on the first chain body, and the first pivot is not movable relative to the first rack; one end of the linkage member is hinged to the first fixed seat to form a second pivot, and the other end of the linkage member is hinged to the second chain body to form a third pivot; a second rack is provided on the chain seat, and a transmission gear is rotatably mounted on the second chain body, the transmission gear meshing between the first rack and the second rack; the first pivot, the second pivot, and the third pivot are non-collinear and parallel, and all three pivots are perpendicular to the first direction; the orientation of the second pivot relative to the first pivot and the orientation of the third pivot relative to the first pivot are adapted to the displacement speed ratio N of the first chain body and the second chain body along the first direction, i.e., it will not jam or cause damage to the parts.

[0019] The present invention is further configured such that, when the hinge is closed, the second pivot and the third pivot are respectively located on both sides of the first pivot.

[0020] Preferably, the plane containing the second pivot and the third pivot is perpendicular to the first direction.

[0021] Preferably, the straight-line distance between the second pivot and the first pivot is less than the straight-line distance between the third pivot and the first pivot.

[0022] The present invention is further configured such that: one side of the chain seat is provided with an assembly groove extending along a first direction.

[0023] Preferably, the chain seat has a second sliding groove, and the two sides of the second chain body are provided with second sliders. The second chain body is inserted into the assembly groove, and the second sliding groove and the second slider are engaged.

[0024] Preferably, the chain seat has first sliding grooves on both sides of the assembly groove, and first sliders are provided on both sides of the first chain body, with the first sliding grooves and first sliders engaging. More preferably, the first chain body covers the assembly groove.

[0025] The present invention is further configured such that the transmission gear is rotatably located at the end of the second chain.

[0026] The present invention is further configured such that: the linkage is a bent component, the linkage includes a first arm, a second arm and a third arm, the two ends of the second arm are respectively connected to the first arm and the third arm, the first arm is hinged to the first fixed seat, and the third arm is hinged to the second chain body.

[0027] The present invention is further configured such that: the front end of the first chain body is provided with a spatial region, the spatial region being entered by the moving link.

[0028] The present invention is further configured such that the angle at which the first fixed seat changes from the closed state to the open state of the hinge is 115°-175°.

[0029] As a third aspect of the present invention, a hinge opening and closing method is provided, comprising: providing a hinge, the hinge comprising a chain seat, a first fixed seat, a first chain body, a second chain body, and a linkage member, the first fixed seat being fastened to a cabinet door, the chain seat being fastened to a cabinet body, the first chain body, the second chain body, and the linkage member constituting the hinge body and connected between the first fixed seat and the chain seat; when open, the cabinet door rotates with the first fixed seat about a first pivot, causing a second pivot to rotate about the first pivot to drive the second chain body forward, and the first chain body is driven to move forward at a displacement speed ratio N by meshing between the first rack of the first chain body and the second rack of the second chain body via a gear assembly rotatably disposed on the chain seat; when closed, the cabinet door rotates in the opposite direction with the first fixed seat about the first pivot, causing a third pivot to rotate about the first pivot to drive the second chain body backward, and the first chain body is driven to move backward at a displacement speed ratio N by the gear assembly.

[0030] Preferably, the first fixed seat rotates 180° between the hinge's closed and open states. Furthermore, when the hinge is open, the cabinet door is fitted to the cabinet body. Fitting means that when the hinge is open, the cabinet door is parallel to the adjacent cabinet door with a very small gap.

[0031] As a fourth aspect of the present invention, a hinge opening and closing method is provided, comprising: providing a hinge, the hinge comprising a chain seat, a first fixed seat, a first chain body, a second chain body, and a linkage member, the first fixed seat being fastened to a cabinet door, the chain seat being fastened to a cabinet body, the first chain body, the second chain body, and the linkage member constituting the hinge body and connected between the first fixed seat and the chain seat; when open, the cabinet door rotates with the first fixed seat about a first pivot, causing a second pivot to rotate about the first pivot to drive the second chain body forward, and the first chain body is driven forward by the meshing of a transmission gear rotatably disposed on the second chain body between a first rack of the first chain body and a second rack of the chain seat; when closed, the cabinet door rotates in the opposite direction with the first fixed seat about the first pivot, causing a third pivot to rotate about the first pivot to drive the second chain body backward, and the first chain body is driven backward by the meshing of the transmission gear to drive the first chain body backward by the displacement speed ratio N.

[0032] The invention is further configured such that the rotation angle of the first fixed seat is 115°-175° between the hinge's closed state and open state.

[0033] The hinge of the present invention is designed so that the relative motion between the first chain body and the second chain body is configured to move back and forth in a straight line along a first direction parallel to the side wall of the cabinet, thereby reducing the range of motion of the sub-hinge. Furthermore, the internal structure of the hinge is designed so that the displacement speed ratio of the two chains body is matched with the rotational motion of the linkage, thus preventing the structure from jamming or damaging the parts. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 is an assembly diagram of Embodiment 1 of the present invention in the closed state;

[0036] Figure 2 is a cross-sectional view of Embodiment 1 of the present invention in the closed state;

[0037] Figure 3 is an assembly diagram of Embodiment 1 of the present invention in the open state;

[0038] Figure 4 is a cross-sectional view of Embodiment 1 of the present invention in the open state;

[0039] Figure 5 is an exploded view of Embodiment 1 of the present invention;

[0040] Figure 6 is an exploded view of a portion of the structure in Embodiment 1 of the present invention;

[0041] Figure 7 is a usage diagram of Embodiment 1 of the present invention;

[0042] Figure 8 is a usage state diagram of Embodiment 1 of the present invention;

[0043] Figure 9 is an assembly diagram of Embodiment 2 of the present invention in the closed state;

[0044] Figure 10 is a cross-sectional view of Embodiment 2 of the present invention in the closed state;

[0045] Figure 11 is an assembly diagram of Embodiment 2 of the present invention in the open state;

[0046] Figure 12 is a cross-sectional view of Embodiment 2 of the present invention in the open state;

[0047] Figure 13 is an exploded view of Embodiment 2 of the present invention;

[0048] Figure 14 is a usage diagram of Embodiment 2 of the present invention;

[0049] Figure 15 is a usage diagram of Embodiment 2 of the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Chain seat;

[0052] 11. Assembly slot; 12. First slide rail; 13. Second slide rail;

[0053] 2. First fixed seat;

[0054] 21. Connecting groove; 22. First hole group; 23. Second hole group;

[0055] 3. First chain;

[0056] 31. First slider; 32. Spatial region;

[0057] 4. Second chain;

[0058] 41. The second slider;

[0059] 5. Linkage components;

[0060] 51. First arm; 52. Second arm; 53. Third arm;

[0061] 61. First pivot; 62. Second pivot; 63. Third pivot;

[0062] 71. First rack; 72. Second rack; 73. Gear assembly; 74. Transmission gear;

[0063] 731. First gear; 732. Second gear; 733. Bridge gear;

[0064] 91. Cabinet body; 92. Cabinet door. Embodiments of the present invention

[0065] To enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection of the present invention, the present invention will be described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present invention, and are merely a part of the embodiments of the present invention. The specific and direct descriptions of related structures are only for the convenience of understanding the present invention, and the specific features do not necessarily or directly limit the scope of the present invention. Conventional choices and substitutions made by those skilled in the art under the guidance of the present invention should be considered within the scope of protection of the present invention.

[0066] Example 1:

[0067] As shown in Figures 1-6, this invention discloses a hinge for hinged two structures that need to be hinged. The two structures can be a cabinet body 91 and a cabinet door 92, or other structures adapted to this hinge. The following description uses the cabinet body 91 and the cabinet door 92 as examples.

[0068] Specifically, the hinge includes a chain seat 1, a first fixed seat 2, a first chain body 3, a second chain body 4, and a linkage component 5;

[0069] The first fixed seat 2 is located in front of the chain seat 1. The first chain body 3 and the second chain body 4 are slidably mounted on the chain seat 1 in the front-back direction and extend forward from the chain seat 1. In addition, the front end of the first chain body 3 is hinged to the first fixed seat 2 by means of a plug to form a first pivot 61. One end of the linkage 5 is hinged to the front end of the second chain body 4 by means of a plug to form a third pivot 63, and the other end of the linkage 5 is hinged to the first fixed seat 2 to form a second pivot 62. The first pivot 61, the second pivot 62 and the third pivot 63 are arranged in parallel and non-collinear, and all are oriented vertically.

[0070] In addition, a first rack 71 is provided on the first chain body 3, and the first pivot 61 is not movable relative to the first rack 71. In this embodiment, both the first pivot 61 and the first rack 71 are fixed on the first chain body 3. Correspondingly, a second rack 72 is fixed on the second chain body 4. Furthermore, a gear assembly 73 is provided on the chain seat 1. The gear assembly 73 meshes with the first rack 71 and the second rack 72. The displacement speed ratio N between the first chain body 3 and the second chain body 4 in the front-back direction is greater than 1, that is, the first chain body 3 and the second chain body 4 move synchronously while moving at a differential speed. Thus, during the flipping process of the first fixed seat 2, the setting position of the second pivot 62 relative to the first pivot 61 and the setting position of the third pivot 63 relative to the first pivot 61 are adapted to the displacement speed ratio N between the first chain body 3 and the second chain body 4 in the front-back direction.

[0071] In this process, the first fixed seat 2 rotates as the pivot door opens, and the linkage 5 rotates around the first pivot 61 as the rotation center and around the straight distance between the first pivot 61 and the second pivot 62 as the radius, so that the third pivot 63 rotates accordingly. The movement of the third pivot 63 is synchronized with the sliding speed ratio N between the first chain 3 and the second chain 4 (if they are synchronized, the parts will collide and jam / lock with each other, or be relatively stretched and damaged. They will only move synchronously when their movement speed / program is almost equal).

[0072] In use, the hinge is fixed to the inner wall of the cabinet 91, and the first fixing seat 2 is fixed to one surface of the cabinet door 92. The first chain body 3, the second chain body 4 and the linkage 5 constitute the hinge body and are connected between the first fixing seat 2 and the chain seat 1.

[0073] Therefore, when the cabinet door 92 is opened, the cabinet door 92 rotates around the first pivot 61 with the first fixed seat 2, causing the second pivot 62 to rotate around the first pivot 61, thereby driving the second chain 4 to move forward. Through the meshing of the gear assembly 73 on the chain seat 1 between the first rack 71 of the first chain 3 and the second rack 72 of the second chain 4, the first chain 3 is driven to move forward at a displacement speed ratio N. As a result, the cabinet door 92 will move away from the cabinet body 91, so that when the cabinet door 92 is rotated to 90°, a gap is formed between the outer periphery of the cabinet door 92 and the cabinet body 91, so that the cabinet body 91 will not block the cabinet door 92 from continuing to rotate. Similarly, the cabinet door 92 rotates away from the cabinet body 91. When the door 92 is rotated to 90°, the distance between the cabinet door 92 and the cabinet body 91 is greater than the thickness of the adjacent cabinet door 92, which can also release the limit of the adjacent cabinet door 92, so that the cabinet door 92 can continue to rotate and open to a larger angle. Thus, when the operator operates inside the cabinet cavity, the cabinet door 92 is less likely to interfere with the operator's movements, making the operation more comfortable; 2. When the cabinet door 92 is closed, the cabinet door 92 rotates in the opposite direction with the first fixed seat 2 around the first pivot 61, so that the second pivot 62 rotates around the first pivot 61 to drive the second chain 4 to move backward, and through the gear assembly 73, the first chain 3 is driven to move backward according to the displacement speed ratio N.

[0074] The gear assembly 73 is configured to engage the first rack 71 and the second rack 72 in the same direction. Specifically, the gear assembly 73 includes a transmission gear set and a bridging gear 733, which are rotatably mounted on the chain seat 1. The transmission gear set includes a first gear 731 and a second gear 732, and the ratio of the radii of the first gear 731 to the second gear 732 is N. The first gear 731 and the second gear 732 are connected by integral molding or coaxial fixing so that the first gear 731 and the second gear 732 rotate synchronously. The first gear 731 meshes with the first rack 71, and the second gear 732 meshes with the second rack 72 via the bridging gear 733.

[0075] Preferably, in this embodiment, the angle at which the first fixed seat 2 changes from the closed state to the open state is 180°, so that the cabinet door 92 is flipped and parallel to the adjacent cabinet door 92 to improve the operator's comfort when operating inside the cabinet cavity.

[0076] The chain seat 1 has mounting grooves 11 extending in the front-to-back direction on its left and right sides. The gear assembly 73 is connected to the side wall of the mounting groove 11 by a vertically extending insert. The upper and lower side walls of the mounting groove 11 have trapezoidal second sliding grooves 13 recessed into them. The upper and lower sides of the second chain 4 have matching second sliders 41, so that the second chain 4 is inserted into the mounting groove 11 and engaged by the second sliding grooves 13 and the second sliders 41. It should be noted that the second chain 4 is located on the side of the gear assembly 73 near the bottom wall of the mounting groove 11. In addition, the chain seat 1 has first sliding grooves 12 on the upper and lower sides of the mounting groove 11, and the upper and lower sides of the first chain 3 have matching first sliders 31. The first sliding grooves 12 and the first sliders 31 are engaged, and the first chain 3 covers the mounting groove 11.

[0077] Among them, the linkage 5 is a bent part, which includes a first arm 51, a second arm 52 and a third arm 53. The two ends of the second arm 52 are connected to the first arm 51 and the third arm 53 respectively. The first arm 51 is hinged to the first fixed seat 2 and the third arm 53 is hinged to the second chain body 4. This allows the third arm 53 to flip to the side of the cabinet door 92 after the cabinet door 92 is rotated more than 90° by the bent linkage 5, making the structure more compact.

[0078] In addition, the first fixed base 2 is provided with a connecting groove 21 that runs through the front and back and a first hole group 22 and a second hole group 23 disposed in the connecting groove 21. The first hole group 22 provides a mounting position for the first chain body 3 so that the insert rod is inserted into the first hole group 22 and the first chain body 3 respectively to form a first pivot 61. Similarly, the second hole group 23 provides a mounting position for the linkage 5 so that the insert rod is inserted into the second hole group 23 and the linkage 5 respectively to form a second pivot 62. Thus, the first chain body 3 and the linkage 5 can be housed in the connecting groove 21 when flipped to the closed position, and can leave the connecting groove 21 when flipped to the open position.

[0079] The front end of the second chain 4 is bent toward the first chain 3 to form a curved end, and the linkage 5 is hinged to the curved end.

[0080] Preferably, the front end of the first chain body 3 is provided with a spatial region 32, which is entered by the linkage 5.

[0081] In this embodiment, the front-back direction is defined as the first direction, which can also be a direction with an appropriate front-back deviation.

[0082] Preferably, in this embodiment, during the opening process, the first fixing member extends out relative to the chain seat 1 and then retracts. The position where it extends to its longest position is the critical position, so that the first fixing member extends as much as possible before the closing position to ensure that it is spaced apart from the adjacent cabinet door 92 to prevent interference. Then it retracts to be close to the adjacent cabinet door 92 to make the structure more compact.

[0083] This embodiment also provides a hinge opening and closing method. Using the above-mentioned hinge, the first fixed seat 2 is used to fasten to the cabinet door 92, and the chain seat 1 is used to fasten to the cabinet body 91. The first chain body 3, the second chain body 4, and the linkage 5 constitute the hinge body and are connected between the first fixed seat 2 and the chain seat 1. When opened, the cabinet door 92 rotates with the first fixed seat 2 around the first pivot 61, so that the third pivot 63 rotates around the first pivot 61 to drive the second chain body 4 to move forward. The first chain body 3 is driven to move forward according to the displacement speed ratio N by the meshing between the first rack 71 of the first chain body 3 and the second rack 72 of the second chain body 4 via the gear assembly 73 rotatably mounted on the chain seat 1. When closed, the cabinet door 92 rotates in the opposite direction with the first fixed seat 2 around the first pivot 61, so that the third pivot 63 rotates around the first pivot 61 to drive the second chain body 4 to move backward. The first chain body 3 is driven to move backward according to the displacement speed ratio N by the gear assembly 73.

[0084] Preferably, the rotation angle between the closed state and the open state is 180°, and the cabinet door 92 is set to fit against the cabinet body 91 when the cabinet is open.

[0085] Furthermore, the hinge passes through a critical state during the flipping process. The critical state is when the first pivot 61, the second pivot 62, and the third pivot 63 are set in the same plane. At this time, the distance between the third pivot 63 and the first pivot 61 reaches the maximum. Therefore, no matter which direction the second pivot 62 rotates, the distance between the first pivot 61 and the third pivot 63 will decrease. This position is the maximum position where the cabinet door 92 can extend. Therefore, when the flipping process passes through this critical position, the cabinet door first extends and then retracts.

[0086] Example 2:

[0087] As shown in Figures 1-6, this invention discloses a hinge for hinged two structures that need to be hinged. The two structures can be a cabinet body 91 and a cabinet door 92, or other structures adapted to this hinge. The following description uses the cabinet body 91 and the cabinet door 92 as examples.

[0088] Specifically, the hinge includes a chain seat 1, a first fixed seat 2, a first chain body 3, a second chain body 4, and a linkage component 5;

[0089] The first fixed seat 2 is located in front of the chain seat 1. The first chain body 3 and the second chain body 4 are slidably mounted on the chain seat 1 in the front-back direction and extend forward from the chain seat 1. In addition, the front end of the first chain body 3 is hinged to the first fixed seat 2 by means of a plug to form a first pivot 61. One end of the linkage 5 is hinged to the front end of the second chain body 4 by means of a plug to form a third pivot 63, and the other end of the linkage 5 is hinged to the first fixed seat 2 to form a second pivot 62. The first pivot 61, the second pivot 62 and the third pivot 63 are arranged in parallel and non-collinear, and all are oriented vertically.

[0090] In addition, a first rack 71 is provided on the first chain body 3, and the first pivot 61 is not movable relative to the first rack 71. In this embodiment, both the first pivot 61 and the first rack 71 are fixed on the first chain body 3. Correspondingly, a second rack 72 is fixed on the chain seat 1. Furthermore, a transmission gear 74 is provided on the second chain body 4. The transmission gear 74 is located between the first rack 71 and the second rack 72, and meshes with the first rack 71 and the second rack 72 respectively, so that the first chain body 3 and the second chain body 4 form a differential motion with a displacement speed ratio of N while moving synchronously. This enables the second pivot 62 to be positioned relative to the first pivot 61 and the third pivot 63 to be positioned relative to the first pivot 61 during the flipping process of the first fixed seat 2, which are adapted to the displacement speed ratio N of the first chain body 3 and the second chain body 4 in the front-back direction. In this embodiment, N is 2.

[0091] In use, the hinge is fixed to the inner wall of the cabinet 91, and the first fixing seat 2 is fixed to one surface of the cabinet door 92. The first chain body 3, the second chain body 4 and the linkage 5 constitute the hinge body and are connected between the first fixing seat 2 and the chain seat 1.

[0092] Therefore, when the cabinet door 92 is opened, the cabinet door 92 rotates around the first pivot 61 with the first fixed seat 2, causing the second pivot 62 to rotate around the first pivot 61, thereby driving the second chain 4 to move forward. Through the meshing of the transmission gear 74 mounted on the second chain 4 between the first rack 71 of the first chain 3 and the second rack 72 of the chain seat 1, the first chain 3 is driven to move forward at a displacement speed ratio N. As a result, the cabinet door 92 will move away from the cabinet body 91, so that when the cabinet door 92 is rotated to 90°, a gap is formed between the outer periphery of the cabinet door 92 and the cabinet body 91, so that the cabinet body 91 will not block the cabinet door 92 from continuing to rotate. Similarly, the cabinet door 92 rotates away from the cabinet body 91. When the door 92 is rotated to 90°, the distance between the cabinet door 92 and the cabinet body 91 is greater than the thickness of the adjacent cabinet door 92, which can also release the limit of the adjacent cabinet door 92, so that the cabinet door 92 can continue to rotate and open to a larger angle. Thus, when the operator operates inside the cabinet cavity, the cabinet door 92 is less likely to interfere with the operator's movements, making the operation more comfortable; 2. When the cabinet door 92 is closed, the cabinet door 92 rotates in the opposite direction with the first fixed seat 2 around the first pivot 61, so that the second pivot 62 rotates around the first pivot 61 to drive the second chain 4 to move backward, and through the transmission gear 74, the first chain 3 is driven to move backward according to the displacement speed ratio N.

[0093] In this embodiment, when in the closed state, the plane containing the second pivot 62 and the third pivot 63 is perpendicular to the front-back direction, and the second pivot 62, the first pivot 61, and the third pivot 63 are arranged sequentially in the left-right direction, so that the second pivot 62 and the third pivot 63 are on both sides of the first pivot 61. Furthermore, the straight-line distance between the second pivot 62 and the first pivot 61 is less than the straight-line distance between the third pivot 63 and the first pivot 61. This state maximizes the distance between the straight-line trajectory of the second pivot 62 and the third pivot 63, i.e., the limit position, allowing subsequent flipping to achieve the maximum angle.

[0094] In other embodiments, when closed, the first pivot 61, the second pivot 62, and the third pivot 63 are arranged sequentially in the left-right direction so that the second pivot 62 and the third pivot 63 are on the same side of the first pivot 61. Compared with the above structure, their flip-out angle is relatively small.

[0095] Preferably, in this embodiment, the angle at which the first fixed seat 2 changes from the closed state to the open state of the hinge is 115°-175°, with 135° being optimal, so that the cabinet door 92 can be opened to a greater extent to improve the operator's comfort when operating inside the cabinet cavity.

[0096] The chain seat 1 has a mounting groove 11 extending in the front-to-back direction on its left and right sides. The upper and lower opposing sidewalls of the mounting groove 11 have recessed trapezoidal second sliding grooves 13. The upper and lower opposing sides of the second chain 4 have matching second sliding blocks 41, allowing the second chain 4 to be inserted into the mounting groove 11 and engaged by the second sliding grooves 13 and second sliding blocks 41. It should be noted that the second rack 72 is located on the bottom wall of the mounting groove 11. Furthermore, the chain seat 1 has first sliding grooves 12 on its upper and lower opposing sides of the mounting groove 11, and the first chain 3 has matching first sliding blocks 31 on its upper and lower opposing sides. The first sliding grooves 12 and first sliding blocks 31 engage, and the first chain 3 covers the mounting groove 11.

[0097] The transmission gear 74 is located at the rear end of the second chain body 4, and the axial direction of the transmission gear 74 is arranged vertically, with the first rack 71 and the second rack 72 meshing on both sides respectively.

[0098] Among them, the linkage 5 is a bent part, which includes a first arm 51, a second arm 52 and a third arm 53. The two ends of the second arm 52 are connected to the first arm 51 and the third arm 53 respectively. The first arm 51 is hinged to the first fixed seat 2 and the third arm 53 is hinged to the second chain body 4. This allows the third arm 53 to flip to the side of the cabinet door 92 after the cabinet door 92 is rotated more than 90° by the bent linkage 5, making the structure more compact.

[0099] In addition, the first fixed base 2 is provided with a connecting groove 21 that runs through the front and back and a first hole group 22 and a second hole group 23 disposed in the connecting groove 21. The first hole group 22 provides a mounting position for the first chain body 3 so that the insert rod is inserted into the first hole group 22 and the first chain body 3 respectively to form a first pivot 61. Similarly, the second hole group 23 provides a mounting position for the linkage 5 so that the insert rod is inserted into the second hole group 23 and the linkage 5 respectively to form a second pivot 62. Thus, the first chain body 3 and the linkage 5 can be housed in the connecting groove 21 when flipped to the closed position, and can leave the connecting groove 21 when flipped to the open position.

[0100] Preferably, the front end of the first chain body 3 is provided with a spatial region 32, which is entered by the linkage 5.

[0101] In this embodiment, the front-back direction is defined as the first direction, which can also be a direction with an appropriate front-back deviation.

[0102] Preferably, in this embodiment, during the opening process, the first fixing member extends out relative to the chain seat 1 and then retracts. The position where it extends to its longest position is the critical position, so that the first fixing member extends as much as possible before the closing position to ensure that it is spaced apart from the adjacent cabinet door 92 to prevent interference. Then it retracts to be close to the adjacent cabinet door 92 to make the structure more compact.

[0103] This embodiment also provides a hinge opening and closing method. Using the above-mentioned hinge, the first fixed seat 2 is used to fasten to the cabinet door 92, and the chain seat 1 is used to fasten to the cabinet body 91. The first chain body 3, the second chain body 4, and the linkage 5 constitute the hinge body and are connected between the first fixed seat 2 and the chain seat 1. When opened, the cabinet door 92 rotates with the first fixed seat 2 around the first pivot 61, causing the second pivot 62 to rotate around the first pivot 61 to drive the second chain body 4 to move forward. The first chain body 3 is driven to move forward according to the displacement speed ratio N by the meshing of the transmission gear 74 rotatably mounted on the second chain body 4 between the first rack 71 of the first chain body 3 and the second rack 72 of the chain seat 1. When closed, the cabinet door 92 rotates in the opposite direction with the first fixed seat 2 around the first pivot 61, causing the second pivot 62 to rotate around the first pivot 61 to drive the second chain body 4 to move backward. The first chain body 3 is driven to move backward according to the displacement speed ratio N by the meshing of the transmission gear 74.

[0104] Furthermore, the hinge passes through a critical state during the flipping process. The critical state is when the first pivot 61, the second pivot 62, and the third pivot 63 are set in the same plane. At this time, the distance between the third pivot 63 and the first pivot 61 reaches the maximum. Therefore, no matter which direction the second pivot 62 rotates, the distance between the first pivot 61 and the third pivot 63 will decrease. This position is the maximum position where the cabinet door 92 can extend. Therefore, when the flipping process passes through this critical position, the cabinet door first extends and then retracts.

[0105] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hinge, characterized in that, It includes a chain seat (1), a first fixed seat (2), a first chain body (3), a second chain body (4), and a linkage component (5); The first chain body (3) and the second chain body (4) are slidably mounted on the chain base (1) along a first direction. The front end of the first chain body (3) is hinged to the first fixed seat (2) to form a first pivot (61). A first rack (71) is provided on the first chain body (3), and the first pivot (61) is not movable relative to the first rack (71). One end of the linkage (5) is hinged to the first fixed seat (2) to form a second pivot (62), and the other end of the linkage (5) is hinged to the second chain (4) to form a third pivot (63). The second chain (4) is provided with a second rack (72). The first pivot (61), the second pivot (62) and the third pivot (63) are non-collinear and parallel, and are all perpendicular to the first direction; The chain seat (1) is rotatably provided with a gear assembly (73), which meshes between the first rack (71) and the second rack (72), and the displacement speed ratio N between the first chain body (3) and the second chain body (4) along the first direction is greater than 1; The orientation of the second pivot (62) relative to the first pivot (61) and the orientation of the third pivot (63) relative to the first pivot (61) are adapted to the displacement speed ratio N of the first chain (3) and the second chain (4) along the first direction.

2. The hinge according to claim 1, characterized in that: The gear assembly (73) is configured to engage the first rack (71) and the second rack (72) in a co-directional displacement; and / or, The gear assembly (73) includes a variable speed gear set and a bridge gear (733), which are rotatably mounted on the chain seat (1). The variable speed gear set includes a first gear (731) and a second gear (732), and the ratio of the radius of the first gear (731) to the radius of the second gear (732) is N. The first gear (731) meshes with the first rack (71), and the second gear (732) meshes with the second rack (72) via the bridge gear (733).

3. The hinge according to claim 1, characterized in that: The angle at which the first fixing seat (2) changes from the closed state to the open state is 180°; and / or, The chain seat (1) has an assembly groove (11) extending in a first direction on one side, and the gear assembly (73) is installed on the side wall of the assembly groove (11); the two side walls of the assembly groove (11) are provided with first sliding grooves (12), and the two sides of the first chain body (3) are provided with first sliders (31), and the first sliding grooves (12) and the first sliders (31) are engaged; the bottom wall of the assembly groove (11) is provided with a second sliding groove (13), and the second chain body (4) is provided with a second slider (41), and the second chain body (4) is inserted into the assembly groove (11).

4. The hinge according to claim 1, characterized in that: The first fixing base (2) is provided with a connecting groove (21), and the connecting groove (21) is provided with a first hole group (22) and a second hole group (23); and / or, The front end of the second chain (4) is bent toward the first chain (3) to form a curved end, and the linkage (5) is hinged to the curved end; and / or, The front end of the first chain body (3) is provided with a spatial region (32), and the linkage (5) is assembled in the spatial region (32).

5. A hinge, characterized in that, It includes a chain seat (1), a first fixed seat (2), a first chain body (3), a second chain body (4), and a linkage component (5); The first chain body (3) and the second chain body (4) are slidably mounted on the chain base (1) along a first direction. The front end of the first chain body (3) is hinged to the first fixed seat (2) to form a first pivot (61). A first rack (71) is provided on the first chain body (3), and the first pivot (61) is not movable relative to the first rack (71). One end of the linkage (5) is hinged to the first fixed seat (2) to form a second pivot (62), and the other end of the linkage (5) is hinged to the second chain (4) to form a third pivot (63). The chain seat (1) is provided with a second rack (72), and a transmission gear (74) is rotatably mounted on the second chain body (4). The transmission gear (74) meshes between the first rack (71) and the second rack (72). The first pivot (61), the second pivot (62) and the third pivot (63) are non-collinear and parallel, and are all perpendicular to the first direction; The orientation of the second pivot (62) relative to the first pivot (61) and the orientation of the third pivot (63) relative to the first pivot (61) are adapted to the displacement speed ratio N of the first chain (3) and the second chain (4) along the first direction.

6. The hinge according to claim 5, characterized in that: When the hinge is closed, the second pivot (62) and the third pivot (63) are respectively located on both sides of the first pivot (61); and / or, The straight-line distance between the second pivot (62) and the first pivot (61) is less than the straight-line distance between the third pivot (63) and the first pivot (61).

7. The hinge according to claim 5, characterized in that: The chain seat (1) has an assembly groove (11) extending in a first direction on one side; the assembly groove (11) has a first sliding groove (12) on both side walls; the first chain body (3) has a first slider (31) on both sides; the first sliding groove (12) and the first slider (31) are engaged; the second slider (41) of the second chain body (4) is inserted into the second sliding groove (13) of the assembly groove (11) and engaged; and / or, The transmission gear (74) is rotatably located at the end of the second chain body (4); and / or, The linkage (5) is a bent component, comprising a first arm (51), a second arm (52), and a third arm (53). The two ends of the second arm (52) are connected to the first arm (51) and the third arm (53) respectively. The first arm (51) is hinged to the first fixed base (2), and the third arm (53) is hinged to the second chain body (4); and / or, The front end of the first chain body (3) is provided with a spatial region (32), and the linkage (5) is assembled within the spatial region (32); and / or, The angle at which the first fixed seat (2) changes from the closed state of the hinge to the open state is 115°-175°.

8. A hinge opening and closing method, characterized in that, include: A hinge is provided, the link comprising a chain seat (1), a first fixed seat (2), a first chain body (3), a second chain body (4), and a linkage (5), the first fixed seat (2) being fastened to a cabinet door (92), the chain seat (1) being fastened to a cabinet body (91), the first chain body (3), the second chain body (4), and the linkage (5) constituting the hinge body and connected between the first fixed seat (2) and the chain seat (1); When opened, the cabinet door (92) rotates around the first pivot (61) along with the first fixed seat (2), causing the second pivot (62) to rotate around the first pivot (61) to drive the second chain (4) to move forward. The first chain (3) is driven to move forward according to the displacement speed ratio N by the meshing between the first rack (71) of the first chain (3) and the second rack (72) of the second chain (4) via the gear assembly (73) rotatably mounted on the chain seat (1). When closed, the cabinet door (92) rotates in the opposite direction around the first pivot (61) along with the first fixed seat (2), causing the second pivot (62) to rotate around the first pivot (61) to drive the second chain (4) to move backward, and through the gear assembly (73) to drive the first chain (3) to move backward according to the displacement speed ratio N; Preferably, the first fixed seat (2) rotates 180° between the closed state and the open state of the hinge, and the cabinet door (92) is set to fit against the cabinet body (91) when it is open.

9. A hinge opening and closing method, characterized in that, include: A hinge is provided, the link comprising a chain seat (1), a first fixed seat (2), a first chain body (3), a second chain body (4), and a linkage (5), the first fixed seat (2) being fastened to a cabinet door (92), the chain seat (1) being fastened to a cabinet body (91), the first chain body (3), the second chain body (4), and the linkage (5) constituting the hinge body and connected between the first fixed seat (2) and the chain seat (1); When opened, the cabinet door (92) rotates around the first pivot (61) along with the first fixed seat (2), causing the second pivot (62) to rotate around the first pivot (61) to drive the second chain (4) to move forward. The first chain (3) is driven to move forward according to the displacement speed ratio N by the meshing between the first rack (71) of the first chain (3) and the second rack (72) of the chain seat (1) via the transmission gear (74) rotatably mounted on the second chain (4). When closed, the cabinet door (92) rotates in the opposite direction around the first pivot (61) along with the first fixed seat (2), causing the second pivot (62) to rotate around the first pivot (61) to drive the second chain (4) to move backward, and through the meshing of the transmission gear (74), the first chain (3) is driven to move backward according to the displacement speed ratio N. Preferably, the rotation angle of the first fixed seat (2) between the closed state and the open state of the hinge is 115°-175°.

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