Single-sided slotless concealed hinge

Abstract

This invention discloses a single-sided, slotless concealed hinge mechanism, including a fixing mechanism and a transmission mechanism. The fixing mechanism includes a housing and a mounting base. The housing is used to embed into a slot in the door frame, and the mounting base is used to fix it to the side of the door leaf. The housing has an inner cavity. The transmission mechanism connects the housing and the mounting base. The transmission mechanism includes a first linkage assembly and a second linkage assembly. The first linkage assembly includes a rocker arm and a swing arm. The rocker arm is hinged to the inner cavity, and one end of the swing arm is hinged to the rocker arm, while the other end is hinged to the mounting base. The second linkage assembly includes a support arm and a circumferential arm. The support arm is hinged to the inner cavity, and one end of the circumferential arm is hinged to the support arm, while the other end is hinged to the mounting base. The middle part of the swing arm is hinged to the middle part of the support arm. When the transmission mechanism drives the hinge mechanism to close, the mounting base is retracted into the inner cavity.

Description

A single-sided slotless concealed hinge mechanism SINGLE-SIDED SLOTLESS CONCEALED HINGE Technical Field

[0001] This work concerns the field of hinge mechanisms, specifically a single-sided slotless concealed hinge mechanism. Prior Technology

[0002] Currently, concealed hinge mechanisms are increasingly used in the hinge connection between door panels and frames, as concealed installation solves the common problem of unsightly exposed tubes in ordinary hinge mechanisms. However, installing concealed hinge mechanisms on the market requires slots to be cut into both the door frame and the door panel, and these slots must be precisely aligned, making construction extremely difficult. Some single-sided slotless hinge mechanisms, due to their small opening angle (generally less than 120 degrees), have a slotless installation part that rotates circumferentially along the connecting shaft on the main body, serving as the fulcrum for opening and closing the door panel. This structure means that the slotting area during main body installation can only have a narrow frame. If a thicker frame is cut, the door frame and door panel will scrape against each other, preventing the door from opening properly and causing significant inconvenience during installation and use. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a single-sided slotless concealed hinge mechanism, which can solve the problems of the small opening angle and the need for an extremely narrow frame at the slot position of the current single-sided slotless hinge mechanism.

[0004] The technical solution adopted by this work to solve its technical problems is:

[0005] A single-sided slotless concealed hinge mechanism, comprising: The fixing mechanism includes a housing and a mounting base, wherein the housing has an inner cavity; A transmission mechanism is provided for connecting the housing and the mounting base. The transmission mechanism includes a first linkage assembly and a second linkage assembly. The first linkage assembly includes a rocker arm and a swing arm. The rocker arm is hinged to the inner cavity. One end of the swing arm is hinged to the rocker arm, and the other end is hinged to the mounting base. The second linkage assembly includes a support arm and a circumferential arm. The support arm is hinged to the inner cavity. One end of the circumferential arm is hinged to the support arm, and the other end is hinged to the mounting base. The middle part of the swing arm is hinged to the middle part of the support arm. When the transmission mechanism drives the hinge mechanism to close, the mounting base is retracted into the inner cavity.

[0006] According to an embodiment of this invention, a single-sided slotless concealed hinge mechanism has at least the following beneficial effects: The single-sided slotless concealed hinge mechanism of this invention achieves comprehensive optimization of door installation and maintenance through innovative design of the fixing and transmission mechanisms. The fixing mechanism's outer shell and mounting base adopt a split design. The outer shell is used to embed into the slot in the door frame, and the mounting base is used to fix it to the side of the door leaf, greatly simplifying the construction difficulty while maintaining the overall aesthetics of the door leaf and door frame. The transmission mechanism uses a double-link assembly working in tandem. The first link assembly ensures the stability of the door leaf when it is open, and the second link assembly provides additional support. Together, they allow the hinge mechanism to retract the mounting base into the inner cavity of the outer shell when closed, achieving true concealed installation. When closed, the mounting base retracts into the inner cavity of the outer shell, allowing for installation with only one side slotting. When open, the mounting base moves circumferentially along the outer shell, enabling wider slotting and reducing the risk of damage to the door. Furthermore, during hinge movement, in addition to circumferential movement with the outer shell, the mounting base rotates circumferentially along the swing arm via a circumferential arm, increasing the opening and closing angles. This structural design not only solves the construction challenge of traditional concealed hinge mechanisms requiring precise slotting on both sides but also achieves smooth door operation and wide-angle opening through a multi-link transmission mechanism. Moreover, the overall structure is compact and reasonable, with reliable collaborative operation of all components, convenient maintenance, and a long service life, making it suitable for various door types and possessing broad market application prospects.

[0007] According to some embodiments of this invention, an inner support is provided inside the cavity, and the rocker arm and the support arm are respectively provided with a first column shaft and a second column shaft, which are hinged to the aforementioned inner support.

[0008] The advantages are: the internal support structure makes the installation of the rocker arm and support arm more stable, improves the rigidity and durability of the overall structure of the hinge mechanism, and facilitates the installation and maintenance of the rocker arm and support arm through the first and second column shafts.

[0009] According to some embodiments of this invention, the first column shaft is a hydraulic shaft, and the rocker arm is disposed on the side of the hydraulic shaft.

[0010] The advantages are: the first column pivot adopts a hydraulic shaft design, which adds an automatic buffer function to the hinge mechanism, allowing the door to close automatically, and the closing process is more stable and quiet, effectively avoiding the noise and damage caused by the door hitting the door frame.

[0011] According to some embodiments of this invention, the hydraulic shaft has a fixed end and a rotating end at both ends, the inner support has a bushing on one side connected to the fixed end, and a bearing on the other side connected to the rotating end.

[0012] The advantage is that the fixed end is fixedly connected to the bushing, and the rotating end and the hydraulic shaft body rotate around the bearing, which not only ensures the stability of transmission, but also realizes the smooth operation of the hydraulic function and improves the comfort of using the product.

[0013] According to some embodiments of this invention, a hydraulic adjusting rod is provided on one side of the rotating end, the hydraulic adjusting rod is provided with a first gear, the inner bracket is rotatably connected to a second gear that meshes with the first gear, and the second gear is provided with an internal hexagonal speed regulating hole.

[0014] The advantage is that the design of the hydraulic adjustment rod and gears allows for easy external adjustment of the buffer force through the internal hexagonal speed adjustment hole, meeting the needs of different usage scenarios and personal preferences, and enhancing the product's adaptability.

[0015] According to some embodiments of the present invention, the other end of the rocker arm is provided with a third column shaft that is hinged to one end of the swing arm, the other end of the swing arm is provided with a fourth column shaft that is hinged to the mounting base, the other end of the support arm is provided with a fifth column shaft that is hinged to one end of the circumferential arm, the other end of the circumferential arm is provided with a sixth column shaft that is hinged to the mounting base, and the middle part of the swing arm is hinged to the middle part of the support arm with a seventh column shaft.

[0016] The advantages are: the multi-column hinge structure ensures the coordination and precision of the movement of each linkage component, making the door opening and closing trajectory more stable and reliable, while reducing component wear.

[0017] According to some embodiments of this invention, the mounting base is provided with a mounting plate on its outer side, the mounting base is provided with a first strip-shaped hole arranged along its length, the mounting base is provided with a first mounting hole, and the first strip-shaped hole and the first mounting hole are connected by a first adjusting screw to adjust the vertical position of the door leaf.

[0018] The advantages are: the adjustable design of the first strip hole and the first mounting hole allows for fine adjustment of the vertical position of the door leaf, solving the problem of alignment deviation during installation and improving installation accuracy and efficiency.

[0019] According to some embodiments of this invention, the mounting plate is provided with a second transverse strip hole, and the second strip hole is provided with a second adjusting screw for adjusting the front and rear position of the door leaf.

[0020] The advantage is that the lateral adjustment function of the second strip hole allows for precise control of the front and rear position of the door leaf, ensuring the fit between the door leaf and the door frame, and improving the product's sealing performance and aesthetics.

[0021] According to some embodiments of this invention, the inner bracket is provided with a third adjusting screw connected to the outer shell, which is used to adjust the vertical position of the inner bracket in the inner cavity, thereby adjusting the left and right position of the door leaf.

[0022] The advantage is that the vertical adjustment function of the inner support allows for precise control of the left and right position of the door leaf, fully realizing flexible adjustment of the door leaf in three-dimensional space.

[0023] According to some embodiments of this invention, both the outer casing and the mounting base are provided with decorative covers.

[0024] The benefits are that the decorative cover covers the screws of the outer casing and the mounting base, making them appear as a whole. This not only enhances the product's aesthetics but also effectively protects the internal structure from dust and foreign objects, extending the product's lifespan.

[0025] Additional aspects and advantages of this work will be set forth in part in the description which follows, and in part will become apparent from the description, or may be learned through practice of this work. Simple Explanation of the Diagram

[0026] To more clearly illustrate the technical solutions of the embodiments of this 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 this invention. For those skilled in the art to which this case pertains, other drawings can be obtained based on these drawings without any progressive effort. Figure 1 is a schematic diagram of an embodiment of this invention; Figure 2 is a schematic diagram of the decomposition of Figure 1; Figure 3 is a cross-sectional schematic diagram of the closed state shown in Figure 1; Figure 4 is a cross-sectional schematic diagram of the open state shown in Figure 3; Figure 5 is a cross-sectional schematic diagram of Figure 3 with the hydraulic shaft fully opened and replaced; Figure 6 is a schematic diagram of the hydraulic shaft installation; Figure 7 is a schematic diagram of a rocker arm with a different form than the hydraulic shaft in Figure 6; Figure 8 is a schematic diagram of the installation of the hydraulic adjusting rod; Figure 9 is a schematic diagram of the installation of the decorative cover; Figure 10 is a schematic diagram of the decorative cover in Figure 9. Implementation

[0027] The embodiments of this invention are described in detail below. Examples of these embodiments are shown in the 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 drawings are exemplary and are only used to explain this invention, and should not be construed as limiting this invention.

[0028] In the description of this work, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., are based on the directional or positional relationships shown in the diagrams and are only for the convenience of describing this work and simplifying the description. They 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 work.

[0029] In the description of this work, "several" means one or more, "more than" 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" and "second" are mentioned, this 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 technical features indicated, or implicitly indicating the order of the technical features indicated.

[0030] In the description of this work, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art to which this work pertains can understand the specific meaning of the above terms in this work based on the specific circumstances.

[0031] A single-sided slotless concealed hinge mechanism is described in detail below with reference to Figures 1-10, using a specific embodiment. It is to be understood that the following description is merely illustrative and not a specific limitation on the invention.

[0032] As shown in Figures 1-3, a single-sided slotless concealed hinge mechanism includes a fixing mechanism and a transmission mechanism.

[0033] The fixing mechanism includes a housing 100 and a mounting base 110. The housing 100 is designed to be embedded in a slot in the door frame, while the mounting base 110 is fixed to the side of the door leaf. Alternatively, the housing 100 can be installed in a slot in the door leaf, with the mounting base 110 fixed to the side of the door frame. The housing 100 has an internal cavity 120 to accommodate the transmission components of the hinge mechanism. This split design allows the hinge mechanism to be installed by slotting only one side of the door frame, significantly simplifying construction while maintaining the overall aesthetics of the door leaf and frame. Both the housing 100 and the mounting base 110 are equipped with decorative covers 410, which not only enhance the product's appearance but also effectively protect the internal mechanisms from dust intrusion, extending the product's lifespan. The transmission mechanism connects the housing 100 and the mounting base 110, employing an innovative design with a double-link assembly working in tandem. The first linkage assembly includes a rocker arm 130 and a swing arm 140. The rocker arm 130 is hinged to the inner cavity 120, and one end of the swing arm 140 is hinged to the rocker arm 130, while the other end is hinged to the mounting base 110. The second linkage assembly includes a support arm 150 and a circumferential arm 160. The support arm 150 is hinged to the inner cavity 120, and one end of the circumferential arm 160 is hinged to the support arm 150, while the other end is hinged to the mounting base 110. The middle parts of the swing arm 140 and the middle parts of the support arm 150 are connected by a hinge point, forming a stable multi-link transmission system. As shown in Figure 3, this structure allows the mounting base 110 to be housed in the inner cavity 120 of the housing 100 when the hinge mechanism is closed, thereby achieving true single-sided slotless and concealed installation. In general, when installing a concealed hinge mechanism on the door leaf and door frame, only a groove needs to be cut in the door frame or door leaf to install the outer shell 100, and the corresponding door frame or door leaf fixed mounting base 110 does not need to be cut.

[0034] Specifically, as shown in Figures 2 and 3, an inner bracket 170 is provided inside the inner cavity 120. The rocker arm 130 and the support arm 150 are respectively provided with a first column shaft 180 and a second column shaft 190, which are hinged to the inner bracket 170. The inner bracket 170 makes the installation of the rocker arm 130 and the support arm 150 more stable, improves the rigidity and durability of the overall structure of the hinge mechanism, and facilitates the installation and maintenance of the rocker arm 130 and the support arm 150 through the first column shaft 180 and the second column shaft 190. The other end of the rocker arm 130 is provided with a third column shaft 290, which is hinged to one end of the swing arm 140. The other end of the swing arm 140 is provided with a fourth column shaft 300, which is hinged to the mounting base 110. The other end of the support arm 150 is provided with a fifth column shaft 310, which is hinged to one end of the circumferential arm 160. The other end of the circumferential arm 160 is provided with a sixth column shaft 320, which is hinged to the mounting base 110. The middle part of the swing arm 140 is hinged to the middle part of the support arm 150 with a seventh column shaft 330. The multi-column hinge structure ensures the coordination and precision of the movement of each linkage component, making the door opening and closing trajectory more stable and reliable, while reducing component wear.

[0035] As can be understood, as shown in Figures 5 and 6, the first column shaft 180 is a hydraulic shaft 200, and the rocker arm 130 is located on the side of the hydraulic shaft 200. As shown in Figure 7, the hydraulic shaft can adopt another form of rocker arm 130. The first column shaft 180 adopts the hydraulic shaft 200 design, which adds an automatic buffer function to the hinge mechanism, allowing the door to close automatically, and the closing process is more stable and quiet, effectively avoiding noise and damage caused by the door hitting the door frame. As shown in Figure 6, the hydraulic shaft 200 has a fixed end 210 and a rotating end 220 at both ends. The inner bracket 170 has a bushing 230 on one side connected to the fixed end 210, and a bearing 240 on the other side connected to the rotating end 220. In this way, the fixed end 210 is fixedly connected to the bushing 230, and the rotating end 220 and the main body of the hydraulic shaft 200 rotate around the bearing 240, which not only ensures the transmission stability, but also realizes the smooth operation of the hydraulic function, improving the user comfort of the product. As shown in Figure 8, a hydraulic adjusting rod 250 is provided on one side of the rotating end 220. The hydraulic adjusting rod 250 is equipped with a first gear 260. The inner bracket 170 is rotatably connected to a second gear 270 that meshes with the first gear 260. The second gear 270 is equipped with an internal hexagonal speed adjustment hole 280. The design of the hydraulic adjusting rod 250 and the gear allows for convenient external adjustment of the buffering force through the internal hexagonal speed adjustment hole 280, meeting the needs of different usage scenarios and personal preferences, and enhancing the adaptability of the product.

[0036] It should be noted that, as shown in Figures 1 and 2, the mounting base 110 has a mounting plate 340 on its outer side. The mounting base 110 has a first strip-shaped hole 350 along its length and a first mounting hole 360. The first strip-shaped hole 350 and the first mounting hole 360 ​​are connected by a first adjusting screw 370 to adjust the vertical position of the door leaf. The adjustment design of the first strip-shaped hole 350 and the first mounting hole 360 ​​allows for fine adjustment of the vertical position of the door leaf, solving the problem of alignment deviation during installation and improving installation accuracy and efficiency. The mounting plate 340 has a second horizontal strip-shaped hole 380, and the second strip-shaped hole 380 has a second adjusting screw 390 for adjusting the front-back position of the door leaf. The horizontal adjustment function of the second strip-shaped hole 380 allows for precise control of the front-back position of the door leaf, ensuring the fit between the door leaf and the door frame and improving the sealing and aesthetics of the product. The inner bracket 170 is equipped with a third adjusting screw 400 connected to the outer casing 100, used to adjust the vertical position of the inner bracket 170 in the inner cavity 120, thereby adjusting the horizontal position of the door leaf. The vertical position adjustment function of the inner bracket 170 allows for precise control of the horizontal position of the door leaf, fully realizing flexible adjustment of the door leaf in three-dimensional space.

[0037] It is worth mentioning that, as shown in Figures 9 and 10, both the housing 100 and the mounting base 110 are provided with decorative covers 410. The decorative covers 410 cover the screws of the housing 100 and the mounting base 110, making them appear as a whole. This not only enhances the aesthetic appearance of the product but also effectively protects the internal structure from dust and foreign objects, extending the product's service life.

[0038] This invention's single-sided, slot-free concealed hinge mechanism achieves comprehensive optimization of door installation and maintenance through innovative fixing and transmission mechanism designs. The fixing mechanism's outer shell 100 and mounting base 110 are designed as separate units. The outer shell 100 is embedded within a slot in the door frame, while the mounting base 110 is fixed to the side of the door. When the hinge mechanism is closed, the mounting base 110 can be retracted into the inner cavity 120 of the outer shell 100, allowing the hinge mechanism to be installed with only a slot on one side. When the hinge mechanism is open, as shown in Figures 4 and 5, the mounting base 110 moves circumferentially along the outer shell 100, allowing the outer shell 100 to have a wide-edge slot, reducing the risk of damage to the door. During the hinge mechanism's movement, in addition to circumferential movement with the outer shell 100, the mounting base 110 also rotates circumferentially along the swing arm 140 driven by the circumferential arm 160, achieving a large-angle opening. This hinge mechanism utilizes a hydraulic shaft 200 design to achieve smooth and automatic door closing, effectively preventing noise and damage caused by the door impacting the frame. The cushioning force of the hydraulic shaft 200 can be precisely controlled via an external adjustment mechanism, allowing users to flexibly adjust the closing speed according to their actual needs. Through the combined design of multiple slotted holes and adjusting screws, precise adjustment of the door leaf in three dimensions—up / down, forward / backward, and left / right—is achieved. This comprehensive adjustment function effectively solves the problem of alignment deviation during installation, ensuring a perfect fit between the door leaf and the frame. Therefore, this hinge mechanism has a compact and reasonable overall structure, reliable collaborative operation of all components, convenient maintenance, long service life, and is suitable for the installation needs of various door types, possessing broad market application prospects.

[0039] In the description of this specification, the references to terms such as "an embodiment, some embodiments, illustrative embodiments, example, specific example, or examples," etc., mean that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] 100: Outer shell 110: Mounting bracket 120: Inner cavity 130: Rocker arm 140: Arm Swing 150: Support arm 160: Zhou Xiangbi 170: Internal support 180: First column axis 190: Second column shaft 200: Hydraulic shaft 210: Fixed end 220: Rotating end 230: Bushing 240: Bearing 250: Hydraulic Adjustment Rod 260: First Gear 270: Second Gear 280: Internal hexagon speed control hole 290: Third column shaft 300: Fourth column shaft 310: Fifth column axis 320: Sixth column shaft 330: Seventh column axis 340: Mounting plate 350: First strip-shaped pore 360: First mounting hole 370: First Adjusting Screw 380: Second strip-shaped pore 390: Second Adjusting Screw 400: Third Adjusting Screw 410: Decorative cover

Claims

1. A single-sided slotless concealed hinge mechanism, comprising: The fixing mechanism includes a housing (100) and a mounting base (110), wherein the housing (100) is provided with an inner cavity (120). A transmission mechanism is used to connect the outer shell (100) and the mounting base (110). The transmission mechanism includes a first linkage assembly and a second linkage assembly. The first linkage assembly includes a rocker arm (130) and a swing arm (140). The rocker arm (130) is hinged to the inner cavity (120). One end of the swing arm (140) is hinged to the rocker arm (130), and the other end is hinged to the mounting base (110). The second linkage assembly includes a support arm (150) and a circumferential arm (160). The support arm (150) is hinged to the inner cavity (120). One end of the circumferential arm (160) is hinged to the support arm (150), and the other end is hinged to the mounting base (110). The middle part of the swing arm (140) is hinged to the middle part of the support arm (150). When the transmission mechanism drives the hinge mechanism to close, the mounting base (110) is housed in the inner cavity (120).

2. The single-sided slotless concealed hinge mechanism as described in claim 1, wherein the inner cavity (120) is provided with an inner support (170), and the rocker arm (130) and the support arm (150) are respectively provided with a first column shaft (180) and a second column shaft (190) and are hinged to the inner support (170).

3. The single-sided slotless concealed hinge mechanism as described in claim 2, wherein the first column shaft (180) is a hydraulic shaft (200), and the rocker arm (130) is disposed on the side of the hydraulic shaft (200).

4. The single-sided slotless concealed hinge mechanism as described in claim 3, wherein the hydraulic shaft (200) has a fixed end (210) and a rotating end (220) at both ends, and the inner bracket (170) has a bushing (230) on one side connected to the fixed end (210), and a bearing (240) on the other side connected to the rotating end (220).

5. The single-sided slotless concealed hinge mechanism as described in claim 4, wherein a hydraulic adjustment rod (250) is provided on one side of the rotating end (220), the hydraulic adjustment rod (250) is provided with a first gear (260), the inner bracket (170) is rotatably connected to a second gear (270) meshing with the first gear (260), and the second gear (270) is provided with an internal hexagonal speed adjustment hole (280).

6. The single-sided slotless concealed hinge mechanism as described in claim 1, wherein the other end of the rocker arm (130) is provided with a third column shaft (290) which is hinged to one end of the swing arm (140), the other end of the swing arm (140) is provided with a fourth column shaft (300) which is hinged to the mounting base (110), the other end of the support arm (150) is provided with a fifth column shaft (310) which is hinged to one end of the circumferential arm (160), the other end of the circumferential arm (160) is provided with a sixth column shaft (320) which is hinged to the mounting base (110), and the middle part of the swing arm (140) is hinged to the middle part of the support arm (150) with a seventh column shaft (330).

7. The single-sided slotless concealed hinge mechanism as described in claim 1, wherein the mounting base (110) is provided with a mounting plate (340) on the outside, the mounting base (110) is provided with a first strip hole (350) arranged along the length direction, the mounting base (110) is provided with a first mounting hole (360), the first strip hole (350) and the first mounting hole (360) are connected by a first adjusting screw (370) for adjusting the up and down position of the door leaf.

8. The single-sided slotless concealed hinge mechanism as described in claim 7, wherein the mounting plate (340) is provided with a second transverse strip hole (380), and the second strip hole (380) is provided with a second adjusting screw (390) for adjusting the front and rear position of the door leaf.

9. The single-sided slotless concealed hinge mechanism as described in claim 2, wherein the inner bracket (170) is provided with a third adjusting screw (400) connected to the outer shell (100) for adjusting the vertical position of the inner bracket (170) in the inner cavity (120), thereby adjusting the left and right position of the door leaf.

10. The single-sided slotless concealed hinge mechanism as claimed in claim 1, wherein both the outer casing (100) and the mounting base (110) are provided with decorative covers (410).

Images