Automatic locking concealed hinge

Abstract

The present invention discloses an automatic locking hidden hinge, comprising a frame connecting assembly for connecting a frame, a fan connecting assembly for connecting a fan, a first connecting rod and a second connecting rod connected between the frame connecting assembly and the fan connecting assembly, and a self-closing drive assembly; wherein the frame connecting assembly comprises a first frame connecting member and a second frame connecting member; and the fan connecting assembly comprises a first fan connecting member and a second fan connecting member. The first connecting rod and the second connecting rod connected between the frame connecting assembly and the fan connecting assembly can play the role of diagonal bracing, and even if the frame connecting assembly or the fan connecting assembly is accidentally loosened, the first connecting rod and the second connecting rod can still maintain a certain supporting effect.

Description

Technical Field

[0001] The invention relates to the technical field of hardware accessories, and in particular to an automatic locking hidden hinge. Background Art

[0002] In daily window use, the function of hinges is to connect window frames and window sashes, and to close the window sashes manually. However, with the continuous changes in the market, hinges can no longer meet the needs of the market. Especially in the field of fireproof windows, the market needs a structural device that can be hidden inside the window and have an automatic closing function. At present, the common hardware configuration of fireproof windows on the market is ordinary hinges (or exposed hinges) + automatic opening and closing devices, but with the development of society, the market tends to develop hidden automatic opening and closing devices. However, most automatic locking devices on the market require slotting on the profile, which is not only troublesome to process, but also shortens the service life of the window sash, reduces the sealing performance, and increases the probability of accidents. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automatic locking concealed hinge which has a novel and stable structure, does not require slotting during installation, and has a wide range of applications.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] An automatic locking hidden hinge comprises a frame connecting assembly for connecting a frame, a fan connecting assembly for connecting a fan, a first connecting rod and a second connecting rod connected between the frame connecting assembly and the fan connecting assembly, and a self-closing drive assembly; wherein the frame connecting assembly comprises a first frame connecting member and a second frame connecting member, the first frame connecting member is in an L-shaped structure and fits two adjacent sides of the frame at the same time, and the second frame connecting member simultaneously connects the first frame connecting member and the frame; the fan connecting assembly comprises a first fan connecting member and a second fan connecting member, the first fan connecting member is hinged to the self-closing drive assembly and the two are Together they form an L-shaped structure that fits the two adjacent sides of the fan body respectively; the second fan body connecting member simultaneously connects the first fan body connecting member and the fan body; the first frame connecting member is provided with a first sliding groove extending along its length direction, the first fan body connecting member is provided with a second sliding groove extending along its length direction, the first connecting rod and the second connecting rod are hinged to each other and the hinge points therebetween are both located in the middle of the two, one end of the first connecting rod is slidably connected to the first sliding groove, and the other end of the first connecting rod is hinged to the first fan body connecting member, one end of the second connecting rod is interactively connected to the second sliding groove, and the other end of the second connecting rod is hinged to the first frame connecting member.

[0006] The beneficial effects of the present invention are as follows: the first frame connecting member of the present invention is in an L-shaped structure and fits two adjacent sides of the frame, and the structure is stable; similarly, the first fan connecting member is hinged with the self-closing drive assembly and the two together form an L-shaped structure that fits two adjacent sides of the fan, and also has stable performance. The first connecting rod and the second connecting rod connected between the frame connecting assembly and the fan connecting assembly can play the role of diagonal bracing, and even if the frame connecting assembly or the fan connecting assembly is accidentally loosened, the first connecting rod and the second connecting rod can still maintain a certain supporting effect.

[0007] Furthermore, the second frame connecting member is provided with a first adjusting slot, the first adjusting slot and the first frame connecting member form a vertical angle, and the second frame connecting member is connected to the first frame connecting member via a screw passing through the first adjusting slot. The relative position between the second frame connecting member and the first frame connecting member can be adjusted via the first adjusting slot to adapt to frames of various sizes.

[0008] Furthermore, the second frame connector is connected to the frame by self-tapping screws. The self-tapping screws are used for connection, and the connection structure is stable and does not require additional slotting for installation.

[0009] Furthermore, the second fan body connecting member is provided with a second adjusting slot, the second adjusting slot and the first fan body connecting member form a vertical angle, and the second fan body connecting member and the first fan body connecting member are connected by a screw passing through the second adjusting slot. The relative position between the second fan body connecting member and the first fan body connecting member can be adjusted through the second adjusting slot to adapt to fans of various sizes.

[0010] Furthermore, the second fan body connector is connected to the fan body by self-tapping screws. The self-tapping screw connection has a stable connection structure and does not require additional slotting for installation.

[0011] Further, the self-closing drive assembly includes a housing, a connecting ear plate for connecting the fan body, a torsion spring built into the housing, a torsion spring shaft, and a ratchet coaxially connected to the connecting ear plate, one end of the torsion spring shaft is formed with a ratchet engaged with the ratchet, and the other end is formed with a torsion spring bayonet connected to the torsion spring. After the present invention adopts the above structure, when the frame is opened, the torsion spring of the self-closing drive assembly is twisted and deformation energy is generated, and the torsion spring shaft and the torsion spring rotate synchronously. Since the ratchet and the pawl cooperate with each other, the torsion spring shaft can only rotate in one direction and cannot be found to rotate. The above method can prevent the frame from being reversed and locked during the opening process, so that the frame remains in an open state; when the frame needs to be closed, the frame is opened with a small amplitude, and the pawl slides out of the tooth groove of the ratchet. At this time, the torsion spring is quickly released to restore its shape, and the frame is driven to close quickly in the process. Since the torque of the torsion spring is large, the torsion spring shaft is reversed at a faster speed during the closing process of the frame to prevent the pawl from sliding into the tooth groove of the pawl again for engagement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an assembly diagram of the hinge, fan body and frame of Example 1.

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the hinge of the first embodiment.

[0014] Figure 3 It is a three-dimensional exploded view of the first embodiment.

[0015] Figure 4 It is a three-dimensional exploded view of the self-closing drive assembly of the first embodiment.

[0016] Figure 5 This is an assembly diagram of the hinge, fan body and frame of Example 2.

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of the hinge of the second embodiment.

[0018] Among them, 1-frame connecting assembly, 11-first frame connecting piece, 111-first slide groove, 12-second frame connecting piece, 121-first adjusting slide groove, 2-fan body connecting assembly, 21-first fan body connecting piece, 211-second slide groove, 22-second fan body connecting piece, 221-second adjusting slide groove, 3-first connecting rod, 4-second connecting rod, 5-self-closing drive assembly, 51-housing, 52-connecting ear plate, 53-torsion spring, 54-torsion spring shaft, 541-pawl, 542-torsion spring bayonet, 55-ratchet, 6-frame, 7-fan body. DETAILED DESCRIPTION

[0019] The technical solution claimed by the present invention will now be further described in detail with reference to the accompanying drawings and specific embodiments.

[0020] Embodiment 1

[0021] See also Figures 1 to 4 As shown, an automatic locking hidden hinge in this embodiment includes a frame connecting component 1 for connecting a frame 6, a fan connecting component 2 for connecting a fan body 7, a first connecting rod 3 and a second connecting rod 4 connected between the frame connecting component 1 and the fan connecting component 2, and a self-closing drive component 5.

[0022] In this embodiment, the frame connecting assembly 1 includes a first frame connecting member 11 and a second frame connecting member 12. The first frame connecting member 11 is in an L-shaped structure and fits two adjacent sides of the frame 6 at the same time, and the second frame connecting member 12 connects the first frame connecting member 11 and the frame 6 at the same time. Since the first frame connecting member 11 is in an L-shaped structure and fits two adjacent sides of the frame 6, the structure is stable. The second frame connecting member 12 is provided with a first adjustment slot 121, and a vertical angle is formed between the first adjustment slot 121 and the first frame connecting member 11. The second frame connecting member 12 is connected to the first frame connecting member 11 by a screw passing through the first adjustment slot 121, and specifically, the second frame connecting member 12 is connected to the frame 6 by a self-tapping screw. The relative position between the second frame connecting member 12 and the first frame connecting member 11 can be adjusted by the first adjustment slot 121, so that it can adapt to frames 6 of various sizes.

[0023] In this embodiment, the fan body connection component 2 includes a first fan body connection member 21 and a second fan body connection member 22. The first fan body connection member 21 is hinged to the self-closing drive component 5 and the two together form an L-shaped structure that fits the two adjacent sides of the fan body 7 respectively, and the second fan body connection member 22 simultaneously connects the first fan body connection member 21 and the fan body 7. Since the first fan body connection member 21 is hinged to the self-closing drive component 5 and the two together form an L-shaped structure that fits the two adjacent sides of the fan body 7 respectively, it also has stable performance. The second fan body connection member 22 is provided with a second adjustment slot 221, and a vertical angle is formed between the second adjustment slot 221 and the first fan body connection member 21. The second fan body connection member 22 and the first fan body connection member 21 are connected by screws passing through the second adjustment slot 221, and specifically, the second fan body connection member 22 and the fan body 7 are connected by self-tapping screws.

[0024] The first frame connecting member 11 is provided with a first slide groove 111 extending along its length direction, the first fan connecting member 21 is provided with a second slide groove 211 extending along its length direction, the first connecting rod 3 and the second connecting rod 4 are hinged to each other and the hinge point between the two is set at the middle of the two, one end of the first connecting rod 3 is slidably connected with the first slide groove 111, and the other end of the first connecting rod 3 is hinged with the first fan connecting member 21, one end of the second connecting rod 4 is interactively connected with the second slide groove 211, and the other end of the second connecting rod 4 is hinged with the first frame connecting member 11. The relative position between the second fan connecting member 22 and the first fan connecting member 21 can be adjusted by the second adjustment slide groove 221 to adapt to fans 7 of various sizes.

[0025] The self-closing drive assembly 5 includes a shell 51, a connecting ear plate 52 for connecting to the fan body 7, a torsion spring 53 built into the shell 51, a torsion spring shaft 54 ​​and a ratchet 55 coaxially connected to the connecting ear plate 52, and one end of the torsion spring shaft 54 ​​is formed with a pawl 541 that meshes with the ratchet 55, and the other end is formed with a torsion spring bayonet 542 that is connected to the torsion spring 53. When the frame 6 is opened, the torsion spring 53 of the self-closing drive assembly 5 is twisted and generates deformation energy storage, and the torsion spring shaft 54 ​​rotates synchronously with the torsion spring 53. Due to the cooperation between the ratchet 55 and the pawl 541, the torsion spring shaft 54 ​​can only rotate in one direction and cannot be detected. The above method can prevent the frame 6 from being reversed and locked during the opening process, so that the frame 6 remains in an open state; when the frame 6 needs to be closed, the frame 6 is opened with a small amplitude, and the pawl 541 slides out of the tooth groove of the ratchet 55. At this time, the torsion spring 53 is quickly released to restore its shape, which will drive the frame 6 to close quickly in the process. Since the torque of the torsion spring 53 is large, the torsion spring shaft 54 ​​is reversed at a faster speed during the closing process of the frame 6 to prevent the pawl 541 from sliding into the tooth groove of the pawl 541 again to engage.

[0026] Embodiment 2

[0027] See also Figures 5 and 6 As shown, the main difference between the hinge structure of this embodiment and that of embodiment one is that the installation directions of the frame connecting component 1 and the fan body connecting component 2 are opposite. This difference enables the hinge of embodiment one to be installed on the left side of the frame 6 and the fan body 7, while the hinge of embodiment two can be installed on the right side of the frame 6 and the fan body 7.

[0028] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the art can use the above disclosed technical content to make more possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent and equivalent changes made according to the ideas of the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic locking concealed hinge, characterized in that: The invention comprises a frame connecting assembly (1) for connecting a frame (6), a fan connecting assembly (2) for connecting a fan (7), a first connecting rod (3) and a second connecting rod (4) connected between the frame connecting assembly (1) and the fan connecting assembly (2), and a self-closing drive assembly (5); wherein the frame connecting assembly (1) comprises a first frame connecting member (11) and a second frame connecting member (12); the first frame connecting member (11) is in an L-shaped structure and fits two adjacent sides of the frame (6); the second frame connecting member (12) connects the first frame connecting member (11) and the frame (6); the fan connecting assembly (2) comprises a first fan connecting member (21) and a second fan connecting member (22); the first fan connecting member (21) is hinged to the self-closing drive assembly (5) and the two together form a The first frame connecting member (11) is provided with a first sliding groove (111) extending along its length direction, and the first frame connecting member (21) is provided with a second sliding groove (211) extending along its length direction. The first connecting rod (3) and the second connecting rod (4) are hinged to each other and the hinge points therebetween are both arranged at the middle of the two. One end of the first connecting rod (3) is slidably connected to the first sliding groove (111), and the other end of the first connecting rod (3) is hinged to the first frame connecting member (21). One end of the second connecting rod (4) is interactively connected to the second sliding groove (211), and the other end of the second connecting rod (4) is hinged to the first frame connecting member (11). The self-closing drive assembly (5) comprises a housing (51), a connecting ear plate (52) for connecting to a fan body (7), a torsion spring (53) built into the housing (51), a torsion spring shaft (54), and a ratchet (55) coaxially connected to the connecting ear plate (52); a ratchet pawl (541) meshing with the ratchet (55) is formed at one end of the torsion spring shaft (54), and a torsion spring bayonet (542) connected to the torsion spring (53) is formed at the other end of the torsion spring shaft (54); The second frame connecting member (12) is provided with a first adjusting slot (121), the first adjusting slot (121) and the first frame connecting member (11) form a vertical intersection angle, and the second frame connecting member (12) and the first frame connecting member (11) are connected via a screw passing through the first adjusting slot (121); The second fan body connecting member (22) is provided with a second adjusting slot (221), the second adjusting slot (221) and the first fan body connecting member (21) form a vertical angle, and the second fan body connecting member (22) and the first fan body connecting member (21) are connected via a screw passing through the second adjusting slot (221).

2. The automatic locking concealed hinge according to claim 1, characterized in that: The second frame connecting member (12) is connected to the frame (6) via self-tapping screws.

3. The automatic locking concealed hinge according to claim 1, characterized in that: The second fan body connecting member (22) is connected to the fan body (7) via self-tapping screws.

Images