Hidden hinge

Abstract

The utility model discloses a hidden hinge which comprises two mounting seats and two connecting rods which are arranged in a crossed mode, the mounting seats are provided with mounting grooves, the mounting grooves are fixedly connected with sliding shafts, and the sliding shafts are arranged in the length directions of the mounting grooves. The middles of the two connecting rods are rotationally connected through a connecting shaft, the connecting shaft is perpendicular to the sliding shafts, the two ends of each connecting rod are rotationally connected with a first shaft sleeve and a second shaft sleeve correspondingly, the two sliding shafts are sleeved with the first shaft sleeve and the second shaft sleeve correspondingly, each sliding shaft is provided with a first guide part, and the first shaft sleeve can slide along the first guide part. The moving path of the first shaft sleeve is a three-dimensional curve and synchronously extends in the axial direction and the circumferential direction of the sliding shaft. According to the hidden hinge, the structural size can be reduced, and the use experience of a user can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field, especially a kind of hidden hinge. BACKGROUND

[0002] Hidden hinge is the common hardware fittings connecting door, window and other furniture components, mainly to realize the rotating connection of door and door frame, window and windowsill, the existing hidden hinge is realized by adopting hinge arm to open and close door and window, but due to the size of hinge arm itself is larger, leading to the thickness of hidden hinge itself is larger, thereby limit the use range of hidden hinge, and affect the overall aesthetic, not conducive to improve the user experience. SUMMARY

[0003] The utility model at least solves one of the technical problems existing in the prior art. To this end, the utility model provides a hidden hinge, which can reduce the structure size and improve the user experience.

[0004] According to the first aspect embodiment of the utility model's hidden hinge, including two mounting seats and two cross-arranged connecting rods, the mounting seat is provided with mounting groove, the mounting groove is fixedly connected with slide shaft, the slide shaft is arranged along the length direction of the mounting groove;The middle part of two connecting rods is rotationally connected by connecting shaft, the connecting shaft is perpendicular to the slide shaft, the two ends of the connecting rod are rotationally connected with first shaft sleeve and second shaft sleeve respectively, the first shaft sleeve and the second shaft sleeve are sleeved on two slide shafts respectively, the slide shaft is provided with first guide part, the first shaft sleeve can slide along the first guide part, the moving path of the first shaft sleeve is three-dimensional curve, which extends synchronously along the axial direction and the circumferential direction of the slide shaft.

[0005] According to the utility model embodiment's hidden hinge, at least has following beneficial effect: mounting seat is provided with mounting groove, slide shaft is fixed in mounting groove, and slide shaft is arranged along the length direction of mounting groove. The middle part of two connecting rods is rotationally connected by connecting shaft, first shaft sleeve and second shaft sleeve are rotationally connected to the two ends of connecting rod, by setting first guide part on slide shaft, and first shaft sleeve slides in first guide part, so that when two mounting seats rotate each other, first shaft sleeve can rotate on slide shaft, and first shaft sleeve can slide along the axial direction of slide shaft, so as to drive two connecting rods to rotate around connecting shaft, so that two connecting rods can pull two mounting seats to each other or open, realize opening and closing action, can reduce space. First guide part can guide first shaft sleeve to move along three-dimensional curve track, so that first shaft sleeve can rotate along the circumferential direction of slide shaft while moving along the axial direction of slide shaft, so as to make first shaft sleeve move efficiently, and cross connecting rod structure can significantly reduce size thickness, only smaller mounting groove can accommodate hidden, enhance the compactness of structure, ensure the working performance of hidden hinge, while improving the aesthetic and practicality.

[0006] According to some embodiments of the present invention, the second bushing is fixed in position to the slide shaft along the axial direction of the slide shaft.

[0007] According to some embodiments of the present invention, the sliding shaft is provided with a second guide portion, the first guide portion and the second guide portion are arranged symmetrically about the center of the sliding shaft, the second bushing is able to slide along the second guide portion, and along the axial direction of the sliding shaft, the movement path of the second bushing is opposite to the movement path of the first bushing.

[0008] According to some embodiments of the present invention, the sliding shaft includes a first shaft and a second shaft, the first shaft and the second shaft are respectively arranged at both ends of the mounting groove, and the first guide portion is arranged on the first shaft and the second guide portion is arranged on the second shaft.

[0009] According to some embodiments of the present invention, the mounting groove is further provided with two adjusting seats, which are respectively connected to the two ends of the mounting groove. The adjusting seats are provided with anti-rotation holes, and the first shaft and the second shaft are respectively inserted into the two anti-rotation holes.

[0010] According to some embodiments of the present invention, the inner sidewall of the anti-rotation hole is provided with at least one first plane, and the sidewalls of the first shaft and the second shaft are provided with at least one second plane, and the first plane abuts against the second plane.

[0011] According to some embodiments of the present invention, the mounting groove is further provided with a support member, which is fixedly connected between the two adjusting seats, and the first shaft and the second shaft are both arranged between the adjusting seats and the support member.

[0012] According to some embodiments of the present invention, the end of the adjusting seat is provided with an adjusting lug, and the inner walls of both ends of the mounting groove are provided with slots. The adjusting lug is inserted into the slot. The adjusting lug is provided with a first guide portion. The thickness of the first guide portion gradually decreases in the direction away from the adjusting seat. The mounting seat is provided with a first adjusting hole that communicates with the slot. A first fastener passes through the first adjusting hole and can abut against the first guide portion.

[0013] According to some embodiments of the present invention, the adjusting lug is provided with two second guide portions, which are respectively arranged on both sides of the first guide portion. The thickness of the second guide portion gradually decreases in the direction away from the first guide portion. The mounting base is provided with two second adjusting holes that communicate with the slot. The second adjusting holes correspond one-to-one with the second guide portions. The second adjusting holes are provided with second fasteners, which can abut against the second guide portions.

[0014] According to some embodiments of the present invention, the support member is provided with reinforcing ribs, which are arranged along the length direction of the mounting groove.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of a concealed hinge according to an embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of the concealed hinge according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the mounting base for the concealed hinge according to an embodiment of the present utility model;

[0020] Figure 4 for Figure 3 A magnified view of part A.

[0021] Figure label:

[0022] Mounting base 100, mounting groove 110, sliding shaft 111, first shaft 112, second shaft 113, first guide part 114, second guide part 115, second plane 116, slot 117, first adjustment hole 118, second adjustment hole 119, adjusting base 120, anti-rotation hole 121, first plane 122, adjusting lug 123, first guide part 124, second guide part 125, first mounting hole 126, support member 130, reinforcing rib 131, second mounting hole 132;

[0023] Connecting rod 200, first bushing 210, second bushing 220. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] It is understood that the concealed hinge of this embodiment can be applied to the opening and closing connectors of mechanisms such as doors and windows. The following description will use a door as an example.

[0029] Understandably, referring to Figures 1 to 3 The concealed hinge of this utility model includes two mounting seats 100 and two cross-arranged connecting rods 200. The mounting seats 100 are provided with mounting grooves 110, and sliding shafts 111 are fixedly connected to the mounting grooves 110. The sliding shafts 111 are arranged along the length direction of the mounting grooves 110. The middle parts of the two connecting rods 200 are rotatably connected by a connecting shaft, which is perpendicular to the sliding shafts 111. The two ends of the connecting rods 200 are respectively rotatably connected to a first bushing 210 and a second bushing 220. The first bushing 210 and the second bushing 220 are respectively sleeved on the two sliding shafts 111. The sliding shafts 111 are provided with a first guide part 114. The first bushing 210 can slide along the first guide part 114. The movement path of the first bushing 210 is a three-dimensional curve, which extends synchronously along the axial and circumferential directions of the sliding shafts 111.

[0030] Mounting base 100 is provided with mounting groove 110, and sliding shaft 111 is fixed in mounting groove 110 and arranged along the length direction of mounting groove 110. The middle parts of two connecting rods 200 are rotatably connected by connecting shaft. First bushing 210 and second bushing 220 are respectively rotatably connected to the two ends of connecting rod 200. First bushing 210 and second bushing 220 on connecting rod 200 are respectively sleeved on sliding shaft 111 of two mounting bases 100. By providing first guide part 114 on sliding shaft 111 and allowing first bushing 210 to slide on first guide part 114, when the two mounting bases 100 rotate relative to each other, first bushing 210 can rotate on sliding shaft 111 and can slide along the axial direction of sliding shaft 111, thereby driving the two connecting rods 200 to rotate around connecting shaft, so that the two connecting rods 200 can pull the two mounting bases 100 together or open, realizing opening and closing actions, and reducing space. The first guide part 114 can guide the first bushing 210 to move along a three-dimensional curved trajectory, so that the first bushing 210 can rotate circumferentially along the slide shaft 111 and move axially along the slide shaft 111 at the same time. This enables the first bushing 210 to move efficiently, and the cross link 200 can significantly reduce its size and thickness. It can be accommodated and hidden with only a small mounting slot 110, which enhances the structural compactness, ensures the working performance of the hidden hinge, and improves aesthetics and practicality.

[0031] Two mounting bases 100 are fixedly connected to the door frame and the door, respectively, and are connected by two cross-arranged connecting rods 200. When the user closes the door, the two mounting bases 100 installed on the door and the door frame respectively come together, and the two connecting rods 200 rotate relative to the mounting bases 100 via a first bushing 210 and a second bushing 220. Simultaneously, the first bushing 210 and the second bushing 220 can move in opposite directions along a sliding shaft 111, causing the two connecting rods 200 to rotate and come together. When the user opens the door, the two mounting bases 100 move away from each other, and the two connecting rods 200 rotate relative to the mounting bases 100 via the first bushing 210 and the second bushing 220. Simultaneously, the first bushing 210 and the second bushing 220 can move towards each other along a sliding shaft 111, causing the two connecting rods 200 to rotate and open. Connecting the two mounting bases 100 via two cross-arranged connecting rods 200 reduces the thickness of the concealed hinge, making its structure more compact and improving its overall aesthetics.

[0032] It should be noted that the first guide part 114 and the first bushing 210 are slidably connected, so that when the first bushing 210 rotates on the sliding shaft 111, the first bushing 210 can move simultaneously along the circumference and axial direction of the sliding shaft 111, thereby driving the two connecting rods 200 to rotate around the connecting shaft. The second bushing 220 can rotate on the sliding shaft 111. The second bushing 220 can be fixed in the axial direction of the sliding shaft 111, or it can move along the axial direction of the sliding shaft 111; this is not limited here.

[0033] Specifically, the first guide portion 114 can be a groove provided on the side wall of the slide shaft 111. The groove is three-dimensional curved. The first bushing 210 is provided with a corresponding protrusion. The protrusion is slidably connected in the groove so that when the first guide portion 114 slides, the first bushing 210 can move synchronously along the axial and circumferential directions of the slide shaft 111.

[0034] The protrusion can also be provided on the first guide portion 114, and the groove can be provided on the first bushing 210, which is not limited here.

[0035] It is understood that the groove and the protrusion can be internal threads and external threads, respectively, so that the first bushing 210 can move along a three-dimensional curve when sliding on the first guide portion 114.

[0036] Specifically, refer to Figure 1 The first bushing 210 and the second bushing 220 are both rotatably connected to the connecting rod 200, and the axis of the first bushing 210 and the axis of the second bushing 220 are both perpendicular to the axis of the connecting shaft.

[0037] It should be noted that the outer wall of the first bushing 210 is provided with a first rotating shaft perpendicular to the connecting shaft, and the outer wall of the second bushing 220 is provided with a second rotating shaft perpendicular to the connecting shaft. The two ends of the connecting rod 200 are respectively rotatably connected to the first rotating shaft and the second rotating shaft.

[0038] Understandably, referring to Figures 1 to 3 Along the axial direction of the sliding shaft 111, the second bushing 220 is fixed to the position of the sliding shaft 111. The second bushing 220 is fixed in the axial direction of the sliding shaft 111, allowing it to rotate around the sliding shaft 111 but not move along its axial direction. This simplifies the movement of the second bushing 220, so that when the two connecting rods 200 are brought together or separated, the second bushing 220 can only rotate, while the first bushing 210 can move circumferentially and axially along the sliding shaft 111, thereby driving the two connecting rods 200 to rotate around the connecting shaft. This ensures the working performance of the concealed hinge while reducing wear caused by the movement of the second bushing 220, thus improving the service life of the concealed hinge.

[0039] It should be noted that a stop (not shown in the attached figure) can be provided on the axial direction of the slide shaft 111, and the stop can abut against both ends of the second bushing 220, thereby limiting the second bushing 220 on the axial direction of the slide shaft 111. This is not limited here.

[0040] Understandably, referring to Figures 1 to 3The sliding shaft 111 is provided with a second guide portion 115. The first guide portion 114 and the second guide portion 115 are arranged symmetrically about the center of the sliding shaft 111. The second bushing 220 can slide along the second guide portion 115. Along the axial direction of the sliding shaft 111, the movement path of the second bushing 220 is opposite to that of the first bushing 210. The sliding shaft 111 is provided with a second guide portion 115. By setting the second bushing 220 to slide on the second guide portion 115, when the two mounting seats 100 rotate relative to each other, both the first bushing 210 and the second bushing 220 rotate on the sliding shaft 111. This allows the first bushing 210 and the second bushing 220 to move closer to each other or further away from each other along the axial direction of the sliding shaft 111. This enables the first bushing 210 and the second bushing 220 to move more efficiently in opposite directions or towards each other, balancing the forces on the two connecting rods 200, helping to reduce wear and noise, enhancing the stability and durability of the concealed hinge, and improving reliability.

[0041] It should be noted that the sliding path of the second bushing 220 on the second guide 115 is a three-dimensional curve. When the two mounting seats 100 rotate relative to each other, the first bushing 210 and the second bushing 220 rotate in the same direction along the circumference of the sliding shaft 111, and the first bushing 210 and the second bushing 220 move in opposite or opposite directions along the axial direction of the sliding shaft 111, thereby driving the two connecting rods 200 to rotate simultaneously and improving the moving efficiency of the connecting rods 200.

[0042] Specifically, refer to Figure 2 The sliding shaft 111 includes a first shaft 112 and a second shaft 113, which are respectively arranged at both ends of the mounting groove 110. A first guide portion 114 is arranged on the first shaft 112, and a second guide portion 115 is arranged on the second shaft 113. By setting the first shaft 112 and the second shaft 113 to be arranged at both ends of the mounting groove 110, and the first guide portion 114 to be arranged on the first shaft 112, and the second guide portion 115 to be arranged on the second shaft 113, the manufacturing difficulty of the sliding shaft 111 can be reduced, which helps to reduce production costs. It also improves the machining accuracy of the first guide portion 114 and the second guide portion 115, so that the first bushing 210 and the second bushing 220 can move smoothly on the first guide portion 114 and the second guide portion 115 respectively, thereby improving the reliability of the concealed hinge.

[0043] Specifically, the first shaft 112 and the second shaft 113 are arranged coaxially so that the lengths of the two connecting rods 200 are equal, thereby balancing the rotating arms of the two connecting rods 200. This helps to reduce the structural size of the concealed hinge, improve the overall aesthetics, and enhance the user experience.

[0044] Specifically, refer to Figure 3 and Figure 4The mounting slot 110 is also provided with two adjusting seats 120, which are respectively connected to the two ends of the mounting slot 110. Each adjusting seat 120 has an anti-rotation hole 121, into which the first shaft 112 and the second shaft 113 are respectively inserted. The two adjusting seats 120 are connected to the two ends of the mounting slot 110. By providing anti-rotation holes 121 on the adjusting seats 120, the first shaft 112 and the second shaft 113 can be respectively inserted into the anti-rotation holes 121 on the two adjusting seats 120, thus providing a more stable support point. This reduces the risk of the first shaft 112 and the second shaft 113 shifting or loosening due to long-term use or external forces, and prevents wear between the first shaft 112 and the second shaft 113 and the mounting seat 100, thereby enhancing the overall stability and durability of the concealed hinge.

[0045] It should be noted that the adjusting seat 120 can be fixed in the mounting groove 110 by means of fastener connection, snap connection, etc., so that the adjusting seat 120 can be stably in the mounting groove 110; the shape of the anti-rotation hole 121 can be a non-circular positioning hole, and the shape of the first shaft 112 and the second shaft 113 can match the shape of the anti-rotation hole 121 to fix the position of the first shaft 112 and the second shaft 113, which is not limited here.

[0046] Specifically, refer to Figure 3 and Figure 4 The inner wall of the anti-rotation hole 121 is provided with at least one first plane 122, and the side walls of the first shaft 112 and the second shaft 113 are provided with at least one second plane 116, with the first plane 122 abutting against the second plane 116. By providing at least one first plane 122 on the inner wall of the anti-rotation hole 121, and correspondingly providing at least one second plane 116 on the first shaft 112 and the second shaft 113, the first plane 122 can abut against the second plane 116 when the first shaft 112 or the second shaft 113 is inserted into the anti-rotation hole 121, preventing relative rotation of the first shaft 112 or the second shaft 113 within the anti-rotation hole 121. This ensures the stability and reliability of the concealed hinge during opening and closing, and avoids loosening or damage caused by rotation of the first shaft 112 or the second shaft 113, thus extending the service life of the hinge.

[0047] In addition, the number of first plane 122 and second plane 116 can be set to multiple. By cooperating with multiple first plane 122 and multiple second plane 116, the contact area between the first shaft 112 or the second shaft 113 and the adjusting seat 120 can be increased, thereby enhancing the connection strength between the first shaft 112 or the second shaft 113 and the adjusting seat 120, improving the load-bearing capacity of the first shaft 112 or the second shaft 113, reducing the possibility of damage and failure of the adjusting seat 120, and improving the reliability of the concealed hinge.

[0048] Specifically, refer to Figure 1 and Figure 2 The mounting slot 110 is also provided with a support member 130, which is fixedly connected between two adjusting seats 120. The first shaft 112 and the second shaft 113 are both arranged between the adjusting seats 120 and the support member 130. The support member 130 is fixedly connected between the two adjusting seats 120. By arranging the first shaft 112 and the second shaft 113 between the adjusting seats 120 and the support member 130, the adjusting seats 120 and the support member 130 can cooperate to provide axial constraint for the first shaft 112 and the second shaft 113. This effectively prevents the first shaft 112 and the second shaft 113 from axial movement or loosening under long-term use or external force, stabilizes the position of the first shaft 112 and the second shaft 113, and prevents the first shaft 112 or the second shaft 113 from coming out of the anti-rotation hole 121, thereby improving the reliability of the concealed hinge.

[0049] Specifically, refer to Figure 3 and Figure 4 The adjusting seat 120 has an adjusting lug 123 at its end. The inner walls of both ends of the mounting groove 110 are provided with slots 117. The adjusting lug 123 is inserted into the slots 117. The adjusting lug 123 has a first guide portion 124, the thickness of which gradually decreases away from the adjusting seat 120. The mounting seat 100 has a first adjusting hole 118 communicating with the slots 117. A first fastener (not shown in the figures) passes through the first adjusting hole 118 and abuts against the first guide portion 124. The adjusting lug 123 is located at the end of the adjusting seat 120, and the inner walls of both ends of the mounting groove 110 are provided with slots 117. By placing the adjusting lug 123 in the slots 117, the position of the adjusting seat 120 in the mounting groove 110 is limited, reducing the positional wobble of the adjusting seat 120. By providing a first guide portion 124 on the adjusting lug 123 and opening a first adjusting hole 118 in the mounting base 100 for the connecting slot 117, the first fastener can abut against the first guide portion 124 when it is inserted into the first adjusting hole 118. This allows the first fastener and the first guide portion 124 to cooperate in finely adjusting the position of the adjusting base 120 relative to the mounting base 100 in the height direction to accommodate deviations in the installation position on the door or door frame, thereby ensuring that the connecting rod 200 can work normally.

[0050] It should be noted that the first fastener can be a bolt, screw, etc., and the first fastener is threaded into the first adjusting hole 118 so that the first fastener can be screwed into or out of the first adjusting hole 118. The first guide portion 124 is tapered so that when the first fastener abuts against the first guide portion 124, the first fastener can push the first guide portion 124 to slide in an inclined direction, thereby adjusting the position of the adjusting seat 120 relative to the mounting seat 100.

[0051] Specifically, refer to Figure 3 and Figure 4 The adjusting lug 123 is provided with two second guide portions 125, which are respectively arranged on both sides of the first guide portion 124. The thickness of the second guide portions 125 gradually decreases in the direction away from the first guide portion 124. The mounting base 100 has two second adjusting holes 119 with two connecting slots 117. The second adjusting holes 119 correspond one-to-one with the second guide portions 125. Second fasteners (not shown in the figure) pass through the second adjusting holes 119 and can abut against the second guide portions 125. The two second guide portions 125 are arranged on both sides of the first guide portion 124, and the thickness of the second guide portions 125 gradually decreases in the direction away from the first guide portion 124. The mounting base 100 has two second adjusting holes 119 with two connecting slots 117. By setting the second fasteners to abut against the second guide portions 125, the second fasteners can push the adjusting base 120 to slide in the slots 117, thereby improving the convenience of adjustment, adapting to deviations in the installation position on the door or door frame, and ensuring that the connecting rod 200 can work normally.

[0052] It should be noted that the second fastener can be a bolt, screw, etc., and the second fastener is threaded into the second adjusting hole 119 so that the second fastener can be screwed into or out of the second adjusting hole 119. The second guide portion 125 is also tapered so that when the second fastener abuts against the second guide portion 125, the second fastener can push the second guide portion 125 to slide in an inclined direction, thereby adjusting the position of the adjusting seat 120 relative to the mounting seat 100.

[0053] Specifically, refer to Figure 3 The support member 130 is provided with reinforcing ribs 131, which are arranged along the length of the mounting groove 110. By providing reinforcing ribs 131 on the support member 130 and arranging them along the length of the mounting groove 110, the structural strength and stability of the support member 130 are improved. This allows the support member 130 to absorb more of the axial force from the rotation of the first bushing 210 and the second bushing 220 on the first guide portion 114 and the second guide portion 115, respectively. This effectively disperses and resists stress concentration under external forces, preventing the support member 130 from deforming or being damaged due to excessive force. This also improves the reliability of the concealed hinge.

[0054] Specifically, refer to Figure 3The adjusting seat 120 has a first mounting hole 126, and the support member 130 has a second mounting hole 132. The first mounting hole 126 and the second mounting hole 132 are aligned, and the first mounting hole 126 and the second mounting hole 132 are connected by a third fastener (not shown in the attached figure). By aligning the first mounting hole 126 with the second mounting hole 132 and sequentially passing the third fastener through the first mounting hole 126 and the second mounting hole 132, the adjusting seat 120 and the support member 130 can be stably connected together. This not only simplifies the installation process and improves assembly efficiency but also facilitates subsequent maintenance and replacement, helping to extend the service life of the concealed hinge.

[0055] It should be noted that the third fastener can be a bolt, screw, etc., and is not limited here.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. Concealed hinge, characterized in that, The utility model relates to a kind of installation seat, including: Two mounting seats, the mounting groove is fixedly connected with sliding shaft, the sliding shaft is arranged along the length direction of the mounting groove is provided with mounting slot; Two cross-arranged connecting rods, the middle part of two The connecting rod is rotatably connected by connecting shaft, the connecting shaft is perpendicular to the sliding shaft, the both ends of the connecting rod are rotatably connected with first shaft sleeve and second shaft sleeve respectively, the first shaft sleeve and the second shaft sleeve are respectively sleeved in two The sliding shaft, the sliding shaft is provided with first guide portion, the first shaft sleeve can slide along the first guide portion, the moving path of the first shaft sleeve is three-dimensional curve, along the axial direction and circumferential direction of the sliding shaft synchronous extension.

2. The hidden hinge according to claim 1, characterized in that, Along the axial direction of the sliding shaft, the position of the second shaft sleeve and the sliding shaft is fixed.

3. The hidden hinge according to claim 1, characterized in that, The sliding shaft is provided with second guide portion, the first guide portion and the second guide portion are arranged with the center symmetry of the sliding shaft, the second shaft sleeve can slide along the second guide portion, along the axial direction of the sliding shaft, the moving path of the second shaft sleeve is opposite to the moving path of the first shaft sleeve.

4. The hidden hinge according to claim 3, characterized in that, The sliding shaft includes first shaft body and second shaft body, the first shaft body and the second shaft body are arranged at two ends of the mounting groove respectively, and the first guide portion is arranged on the first shaft body, and the second guide portion is arranged on the second shaft body.

5. The hidden hinge according to claim 4, characterized in that, The mounting groove is also provided with two adjusting seats, two The adjusting seat is connected to two ends of the mounting groove respectively, the adjusting seat is provided with a rotation-stopping hole, and the first shaft body and the second shaft body are respectively inserted into two The rotation-stopping hole.

6. The hidden hinge according to claim 5, characterized in that, The inner side wall of the rotation-stopping hole is provided with at least one first plane, and the side wall of the first shaft body and the second shaft body is provided with at least one second plane, and the first plane is in abutment with the second plane.

7. The hidden hinge according to claim 5, characterized in that, The mounting groove is also provided with a support, and the support is fixedly connected between the two adjusting seats, and the first shaft body and the second shaft body are arranged between the adjusting seat and the support.

8. The hidden hinge according to claim 7, characterized in that, The end of the adjusting seat is provided with an adjusting lug, the inner wall of the two ends of the mounting groove is provided with a slot, the adjusting lug is inserted into the slot, the adjusting lug is provided with a first guide portion, the thickness of the first guide portion gradually decreases away from the adjusting seat, the mounting seat is provided with a first adjusting hole communicating with the slot, the first adjusting hole is provided with a first fastener, and the first fastener can abut with the first guide portion.

9. The hidden hinge according to claim 8, characterized in that, The adjusting lug is provided with two second guide portions, two The second guide portion is arranged on the two sides of the first guide portion respectively, the thickness of the second guide portion gradually decreases away from the first guide portion, the mounting seat is provided with two second adjusting holes communicating with the slot, the second adjusting hole and the second guide portion are one-to-one correspondence, the second adjusting hole is provided with a second fastener, and the second fastener can abut with the second guide portion.

10. The hidden hinge according to claim 7, characterized in that, The support is provided with a reinforcing rib, and the reinforcing rib is arranged along the length direction of the mounting groove.

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