Unidirectional adjustable slotting-free invisible hinge

By designing a one-way adjustable, slot-free invisible hinge, and using a box and inner sleeve structure, the hinge becomes invisible and its security is improved, solving the problems of insufficient aesthetics and poor security of traditional hinges.

CN121006918APending Publication Date: 2025-11-25ZHONGSHAN PINRONG HARDWARE PROD CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202511307300.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-13
Publication Date
2025-11-25

AI Technical Summary

Technical Problem

Traditional surface-mounted hinges are not aesthetically pleasing and have poor security. Once installed, their fixed position is difficult to adjust, which affects the minimalist design and anti-pry capabilities.

Method used

A one-way adjustable, slot-free, invisible hinge is designed, employing a box and inner sleeve structure connected by a hinge core. The inner sleeve is height-adjustable and hidden in the door gap. Combined with decorative panels and 3M adhesive, the hinge achieves invisibility and enhances security.

Benefits of technology

The hinges are completely hidden, which improves the door's anti-pry capability and security, while also solving the problems of inconvenient installation and lack of aesthetics.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121006918A_ABST
    Figure CN121006918A_ABST
Patent Text Reader

Abstract

The one-way adjustable slotting-free invisible hinge comprises a box body and an inner sleeve, the box body comprises an invisible groove and an encircling type connecting opening, mounting holes are formed in the two side walls of the encircling type connecting opening, the inner sleeve comprises a door leaf connecting part and a box body hinging part, and the interior of the box body hinging part is of a hollow structure; the box body hinge portion of the inner sleeve is arranged in the connecting opening of the box body, hinge cores are arranged in the hollow structure of the inner sleeve and the mounting holes in the two sides, the box body and the inner sleeve move with the hinge cores as the axis, and the door leaf connecting portion is arranged in the hidden groove. The door leaf connecting part of the inner sleeve is arranged in the hidden groove of the box body to complete storage, the hidden hinge is achieved, the hinge is completely hidden in a door crack, the shape of the hinge cannot be seen from any angle, the line between the door leaf and the door frame is neat, and due to the fact that the hinge is hidden inside, when a door is closed, the door leaf is not damaged. And a rotating shaft and a connecting part of the hinge cannot be contacted from the outside, so that the prying-resistant capability and the safety of the door are greatly improved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present application belongs to the hinge technical field, and particularly relates to a one-way adjustable slot-free invisible hinge. BACKGROUND

[0002] Traditional surface-mounted hinges usually only provide basic rotation function, and exposed hinges, screws and rotating shafts will break the visual continuity between the door leaf and the door frame, and will divide a complete door into several parts, which is particularly conspicuous in the design of minimalist and pure style. The exposure of the hinge means that the rotating shaft and the fixing screw are exposed, which provides the possibility of malicious damage or technical unlocking. Once the ordinary surface-mounted hinge is installed, its position is fixed. If the door is sagging or deformed due to gravity, it is difficult to fine-tune and correct, and it often needs to be reinstalled or padded with something, which is very troublesome. The above is the main technical problem that the existing hinge cannot be invisible. SUMMARY

[0003] The technical problems of poor appearance and poor safety of the existing surface-mounted hinge are solved.

[0004] To achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows: a one-way adjustable slot-free invisible hinge, comprising a box body and an inner sleeve, the box body comprising a invisible slot and a connecting opening, the connecting opening being provided on the side of the invisible slot, the connecting opening being provided with mounting holes on both sides, the inner sleeve comprising a door leaf connecting part and a box body hinged part, the box body hinged part being provided on one side of the door leaf connecting part, the box body hinged part being provided with a hollow structure inside, the box body hinged part of the inner sleeve being provided in the connecting opening of the box body, the hollow structure of the box body hinged part being aligned with the mounting holes on both sides, the inner sleeve being provided with a hinge core in the hollow structure and the mounting holes on both sides, the box body and the inner sleeve being movable about the hinge core as the axis, and the door leaf connecting part being provided in the invisible slot.

[0005] Further, the door leaf connecting part of the inner sleeve is provided with height adjustment grooves at the upper and lower ends, respectively, and the height adjustment grooves are provided with fasteners fixedly connected with the door leaf.

[0006] Further, the surface of the door leaf connecting part of the inner sleeve is provided with an inner sleeve decorative plate.

[0007] Further, the inner sleeve decorative plate and the inner sleeve are bonded by 3M glue.

[0008] Further, the outer side of the upper and lower ends of the hinge core is provided with a meson, and the meson is provided between the box body hinged part of the inner sleeve and the side wall of the box body.

[0009] Further, the two ends of the box body are respectively provided with door frame connecting parts, the door frame connecting parts are provided with connecting holes, and the connecting holes are provided with fasteners fixedly connected with the door frame.

[0010] Further, the surface of the door frame connecting part is provided with a box body decorative plate.

[0011] Further, the box body decorative plate and the box body can be adhered by 3M glue.

[0012] The box body and the door frame are fixedly installed, the inner sleeve and the door leaf are fixedly installed, when the door leaf and the door frame need to be closed, the box body and the inner sleeve are pivotally connected with the hinge core as the pivot, the door leaf connecting part of the inner sleeve is arranged in the invisible slot of the box body to complete storage and realize the invisible hinge, the hinge is completely hidden in the door gap, the hinge shape cannot be seen from any angle, the lines between the door leaf and the door frame are clean and neat, the hinge is hidden inside, the rotating shaft and the connecting part of the hinge cannot be contacted from the outside when the door is closed, and the pick-proof ability and the safety of the door are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a front view of the unfolded state of the hinge of the present application;

[0014] Fig. 2 It is an exploded view of the present application;

[0015] Fig. 3 It is a schematic view of the box body structure of the present application;

[0016] Fig. 4 It is a schematic view of the inner sleeve structure of the present application;

[0017] Fig. 5 It is a schematic view of the invisible state of the hinge of the present application.

[0018] Fig. 6 It is a schematic view of the invisible state of the hinge of the present application.

[0019] The box body 10, the inner sleeve 20, the invisible slot 11, the connecting opening 12, the mounting hole 13, the door leaf connecting part 21, the box body hinge part 22, the hinge core 14, the height adjusting slot 23, the inner sleeve decorative plate 24, the meson 15, the door frame connecting part 16, the connecting hole 17, and the box body decorative plate 18. DETAILED DESCRIPTION

[0020] The present application is a technical solution for solving the problem of free slot installation of an extremely narrow aluminum alloy door frame. The technical feature is to optimize the door leaf connecting panel structure into a square integrated structure that can be adjusted up and down, and to hide it in the door frame box by embedded design. The door leaf mounting surface and the door frame mounting surface are consistent in height, so that the door leaf side does not need to be slotted during installation, and only a small square slot needs to be opened on the door frame side, solving the installation problem of the extremely narrow aluminum alloy door.

[0021] At the same time, the door frame mounting box body is optimized in one step, and the height hidden in the aluminum alloy frame of the door frame is compressed to within 8 mm, so that most of the aluminum profiles on the market can be used. In order to improve the carrying capacity of the invisible hinge, the door frame box body is designed as a ring structure, and the connection length of the shaft core is lengthened.

[0022] As shown in Figs. 1 to 6 A one-way adjustable slotless invisible hinge, comprising a box body 10 and an inner sleeve 20, the box body 10 comprising an invisible slot 11 and a connecting opening 12, the connecting opening 12 being provided on one side of the invisible slot 11, the connecting opening 12 being provided with mounting holes 13 on both sides, the inner sleeve 20 comprising a door leaf connecting part 21 and a box body hinged part 22, the box body hinged part 22 being provided on one side of the door leaf connecting part 21, the box body hinged part 22 being provided with a hollow structure inside, the box body hinged part 22 of the inner sleeve 20 being provided in the connecting opening 12 of the box body 10, the hollow structure of the box body hinged part 22 being aligned with the mounting holes 13 on both sides, and the hollow structure of the inner sleeve 20 being provided with a hinge core 14 on both sides, so that the box body 10 and the inner sleeve 20 are hinged through the hinge core 14.

[0023] In use, the box body 10 is fixedly installed with the door frame, and the inner sleeve 20 is fixedly installed with the door leaf. When the door leaf needs to be closed with the door frame, the box body 10 and the inner sleeve 20 are hinged with the hinge core 14 as the shaft, so that the door leaf connecting part 21 of the inner sleeve 20 is provided in the invisible slot 11 of the box body 10 to complete the storage and realize the invisible hinge. The hinge is completely hidden in the door gap, and the hinge shape cannot be seen from any angle, so that the lines between the door leaf and the door frame are clean and neat. Since the hinge is hidden inside, the rotating shaft and the connecting parts of the hinge cannot be touched from the outside when the door is closed, which greatly improves the anti-picking ability and safety of the door.

[0024] The door leaf connecting part 21 of the inner sleeve 20 is provided with height adjustment grooves 23 at the upper and lower ends, respectively, and the height adjustment grooves 23 are provided with fasteners fixedly connected with the door leaf. When the position of the inner sleeve 20 and the door leaf needs to be set, first loosen the fasteners connected with the door leaf, then set the inner sleeve to move up and down, and then tighten the fasteners after adjusting the appropriate position to complete the position adjustment.

[0025] In order to be able to shield the internal structure of the door leaf connecting part 21 of the inner sleeve 20 and make the product more beautiful, the surface of the door leaf connecting part 21 of the inner sleeve is provided with an inner sleeve decorative plate 24, and the inner sleeve decorative plate 24 and the inner sleeve 20 can be bonded by 3M glue.

[0026] The hinge core 14 is provided with a meson 15 on the outer side of the upper and lower ends, and the meson 15 is arranged between the box body hinged part 22 of the inner sleeve 20 and the side wall of the box body 10. In use, the meson can reduce the friction between the box body and the inner sleeve, prolong the service life of the hinge.

[0027] The box body 10 is respectively provided with a door frame connecting part 16 at both ends, the door frame connecting part 16 is provided with a connecting hole 17, the connecting hole 17 is provided with a fastener fixedly connected with the door frame, the surface of the door frame connecting part 16 is provided with a box body decorative plate 18, the box body decorative plate 18 and the box body 10 can be adhered through 3M glue, and the box body decorative plate can make the overall appearance of the hinge more beautiful.

Claims

1. A one-way adjustable slotless invisible hinge, characterized in that, The device includes a housing (10) and an inner sleeve (20). The housing (10) includes a concealed groove (11) and a connecting opening (12). The connecting opening (12) is located on one side of the concealed groove (11), and mounting holes (13) are provided in both side walls of the connecting opening (12). The inner sleeve (20) includes a door leaf connecting part (21) and a housing hinge part (22). The housing hinge part (22) is located on one side of the door leaf connecting part (21), and the housing hinge part (22) has a housing inside. The inner sleeve (20) has a hollow structure. The hinge part (22) of the inner sleeve (20) is located in the connection opening (12) of the box body (10). The upper and lower ends of the hollow structure of the hinge part (22) are aligned with the mounting holes (13) on both sides. The hollow structure of the inner sleeve (20) and the mounting holes (13) on both sides are provided with hinge cores (14). The box body (10) and the inner sleeve (20) move around the hinge cores (14) as the axis. The door leaf connection part (21) is located in the hidden groove (11).

2. The unidirectional adjustable slotless invisible hinge according to claim 1, characterized in that, The inner sleeve (20) has height adjustment grooves (23) at both the upper and lower ends of the door leaf connection part (21), and the height adjustment grooves (23) are provided with fasteners that are fixedly connected to the door leaf.

3. The unidirectional adjustable slotless invisible hinge according to claim 2, characterized in that, The surface of the inner door panel connecting part (21) is provided with an inner decorative panel (24).

4. The unidirectional adjustable slotless invisible hinge according to claim 3, characterized in that, The inner decorative panel (24) is bonded to the inner sleeve (20) with 3M adhesive.

5. The unidirectional adjustable slotless invisible hinge according to claim 2, characterized in that, The hinge core (14) has a spacer (15) sleeved on the outer side of its upper and lower ends. The spacer (15) is located between the hinge part (22) of the inner sleeve (20) and the side wall of the box (10).

6. The unidirectional adjustable slotless invisible hinge according to claim 5, characterized in that, The box body (10) has door frame connecting parts (16) at both ends, and the door frame connecting parts (16) have connecting holes (17) and fasteners that are fixedly connected to the door frame in the connecting holes (17).

7. The unidirectional adjustable slotless invisible hinge according to claim 6, characterized in that, The surface of the door frame connection part (16) is provided with a box-shaped decorative panel (18).

8. The unidirectional adjustable slotless invisible hinge according to claim 7, characterized in that, The decorative panel (18) of the box body and the box body (10) can be bonded together with 3M adhesive.