Hidden hinge

Abstract

The utility model discloses a hidden hinge which comprises a central rotating shaft, two first cover bodies, two second cover bodies, a plurality of first connecting rods, a plurality of second connecting rods, a plurality of third connecting rods, two first follow-up rotating shafts, two second follow-up rotating shafts and two third follow-up rotating shafts, wherein the two first cover bodies, the two second cover bodies, the plurality of first connecting rods, the plurality of second connecting rods, the plurality of third connecting rods, the two first follow-up rotating shafts and the two third follow-up rotating shafts are symmetrically distributed relative to the central rotating shaft. The cover body is provided with a first cover body first groove, the first connecting rod is provided with a first connecting rod protruding part, and the first connecting rod protruding part is fixedly and internally connected to the first cover body first groove. The hidden hinge disclosed by the utility model has the beneficial effects that when the hidden hinge is in a complete folding state, all the connecting rods and all the rotating shafts are hidden in the first cover body and the second cover body, and no connecting rod or rotating shaft is exposed out of the first cover body and the second cover body.

Description

Technical Field

[0001] This utility model belongs to the field of hinges, specifically relating to a concealed hinge. Background Technology

[0002] The utility model patent with publication number CN220790936U and subject name "concealed hinge" has IPC classification number E05D3 / 06. Its technical solution discloses that "at least one of the first hinge and the second hinge is provided with a storage groove, and a hinge arm is provided between the first hinge and the second hinge. The hinge arm is movably connected to the first hinge and the second hinge respectively. When the first hinge and the second hinge are closed, the hinge arm is stored in the storage groove. The hinge arm includes a first bridge arm and a second bridge arm. The first bridge arm is composed of a first connecting block and a second connecting block. One end of the first connecting block is hinged to the first hinge, and the other end of the first connecting block is hinged to the second connecting block through a first hinge shaft. The other end of the second connecting block is hinged to the second hinge."

[0003] Therefore, the above utility model patents have disclosed one technical solution for concealed hinges. However, the technical solutions disclosed in these utility model patents focus on increasing the upper limit of the door panel's weight capacity and do not further solve problems such as concealing all connecting rods and pivots, which require further improvement. Utility Model Content

[0004] This invention addresses the shortcomings of the existing technology by providing a concealed hinge.

[0005] This utility model adopts the following technical solution: a concealed hinge, comprising a central pivot and two first covers, two second covers, multiple first links, multiple second links, multiple third links, two first follower pivots, two second follower pivots, and two third follower pivots symmetrically distributed relative to the central pivot, wherein:

[0006] The first cover has a first groove, and the first connecting rod has a first protrusion, which is fixedly connected to the first groove of the first cover.

[0007] The first link is rotatably connected to the first follower shaft and the third follower shaft located on the same side, respectively;

[0008] The second link is rotatably connected to the first follower shaft and the second follower shaft located on the same side, respectively;

[0009] The third link is rotatably connected to the central rotating shaft, the second follower rotating shaft on the same side, and the third follower rotating shaft on the opposite side.

[0010] As a preferred technical solution to the above technical solutions, the first link, the second link, and the third link are alternately distributed along the axial direction of the central rotation axis.

[0011] As a preferred technical solution of the above technical solutions, the first link has a first positioning hole and a second positioning hole, the first follower shaft is internally connected to the first positioning hole, and the second follower shaft is internally connected to the second positioning hole.

[0012] As a preferred technical solution of the above technical solutions, the third link has a first positioning hole, a second positioning hole and a third positioning hole, the central rotating shaft is internally connected to the first positioning hole, the third follower rotating shaft is internally connected to the second positioning hole, and the second follower rotating shaft is internally connected to the third positioning hole.

[0013] As a preferred technical solution to the above technical solutions, the distance between the first positioning hole and the second positioning hole of the third link is less than the distance between the first positioning hole and the third positioning hole of the third link.

[0014] The concealed hinge disclosed in this utility model has the advantage that when the concealed hinge is in the fully closed state, all connecting rods and all pivots are hidden inside the first and second covers, and no connecting rods or pivots are exposed outside the first and second covers. Attached Figure Description

[0015] Figure 1 This is a perspective view of this application.

[0016] Figure 2 This is a three-dimensional view from another perspective of this application.

[0017] Figure 3 This is a top view of this application.

[0018] Figure 4 This is a perspective view of the first link of this application.

[0019] Figure 5 This is a perspective view of the third link of this application.

[0020] Figure 6 This is a top view of the first enclosure in this application.

[0021] Figure 7 This is a partial structural diagram of this application.

[0022] The reference numerals in the attached drawings include: 100-first cover; 101-first groove of the first cover; 200-second cover; 300-first connecting rod; 301-first positioning hole of the first connecting rod; 302-second positioning hole of the first connecting rod; 310-protrusion of the first connecting rod; 400-second connecting rod; 500-third connecting rod; 501-first positioning hole of the third connecting rod; 502-second positioning hole of the third connecting rod; 503-third positioning hole of the third connecting rod; 600-central pivot; 700-first follower pivot; 800-second follower pivot; 900-third follower pivot. Detailed Implementation

[0023] This utility model discloses a concealed hinge. The following description, in conjunction with a preferred embodiment (Embodiment 1), refers to the accompanying drawings. Figures 1 to 7 The specific embodiments of this utility model will be further described below.

[0024] See attached diagram. Figures 1 to 7 , Figures 1 to 3 The hidden hinges are shown from different perspectives. Figure 4 , Figure 5 , Figure 6 The first link, the third link, and the first cover are shown respectively. Figure 7 Part of the concealed hinge is shown.

[0025] Example 1.

[0026] Preferably, the concealed hinge includes a central pivot 600 and two first covers 100, two second covers 200, multiple first links 300, multiple second links 400, multiple third links 500, two first follower pivots 700, two second follower pivots 800, and two third follower pivots 900 symmetrically distributed relative to the central pivot 600, wherein:

[0027] The first cover 100 has a first cover first groove 101, and the first connecting rod 300 is provided with a first connecting rod protrusion 310, which is fixedly connected to the first cover first groove 101.

[0028] The first link 300 is respectively sleeved on the first follower shaft 700 and the third follower shaft 900 located on the same side, so that the first link 300 is rotatably connected to the first follower shaft 700 and the third follower shaft 900 located on the same side.

[0029] The second link 400 is respectively sleeved on the first follower shaft 700 and the second follower shaft 800 located on the same side, so that the second link 400 is rotatably connected to the first follower shaft 700 and the second follower shaft 800 located on the same side.

[0030] The third link 500 is respectively sleeved on the central rotating shaft 600, the second follower rotating shaft 800 on the same side and the third follower rotating shaft 900 on the opposite side, so that the third link 500 is rotatably connected to the central rotating shaft 600, the second follower rotating shaft 800 on the same side and the third follower rotating shaft 900 on the opposite side.

[0031] This allows the concealed hinge to switch between a fully extended state and a fully closed state. When the concealed hinge is in the fully closed state, all links and all pivots are hidden inside the first cover 100 and the second cover 200, and no links or pivots are exposed outside the first cover 100 and the second cover 200.

[0032] It should be noted that, Figures 1 to 3 This shows the intermediate state of the concealed hinge transitioning from its fully extended state to its fully closed state.

[0033] Among them, see Figure 2 When the concealed hinge is fully extended, surface B faces surface C, and surfaces A and D are on the same plane after extension; when the concealed hinge is fully closed, surface A faces surface D, and surfaces B and C are on the same plane after extension.

[0034] The first cover 100 and the second cover 200 are interlocked and elastically connected.

[0035] The structure of the central rotating shaft 600 is the same as that of the first follower rotating shaft 700, the second follower rotating shaft 800, and the third follower rotating shaft 900.

[0036] The first link 300, the second link 400, and the third link 500 are alternately distributed along the axial direction of the central rotating shaft 600.

[0037] The first connecting rod 300 has a first positioning hole 301 and a second positioning hole 302, a first follower rotating shaft 700 is connected to the first positioning hole 301, and a second follower rotating shaft 800 is connected to the second positioning hole 302.

[0038] The third link 500 has a first positioning hole 501, a second positioning hole 502, and a third positioning hole 503. The central rotating shaft 600 is connected to the first positioning hole 501. The third follower rotating shaft 900 (located on the opposite side) is connected to the second positioning hole 502. The second follower rotating shaft 800 (located on the same side) is connected to the third positioning hole 503.

[0039] The distance between the first positioning hole 501 and the second positioning hole 502 of the third link is smaller than the distance between the first positioning hole 501 and the third positioning hole 503 of the third link, so as to form a transmission torque.

[0040] It is worth mentioning that the material and other technical features of the second cover 200 involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement methods of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0041] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A concealed hinge, characterized in that, It includes a central rotating shaft and two first housings, two second housings, multiple first links, multiple second links, multiple third links, two first follower rotating shafts, two second follower rotating shafts, and two third follower rotating shafts symmetrically distributed relative to the central rotating shaft, wherein: The first cover has a first groove, and the first connecting rod has a first protrusion, which is fixedly connected to the first groove of the first cover. The first link is rotatably connected to the first follower shaft and the third follower shaft located on the same side, respectively; The second link is rotatably connected to the first follower shaft and the second follower shaft located on the same side, respectively; The third link is rotatably connected to the central rotating shaft, the second follower rotating shaft on the same side, and the third follower rotating shaft on the opposite side.

2. The concealed hinge according to claim 1, characterized in that, The first, second, and third links are alternately distributed along the axial direction of the central axis.

3. The concealed hinge according to claim 1, characterized in that, The first link has a first positioning hole and a second positioning hole, a first follower shaft is internally connected to the first positioning hole, and a second follower shaft is internally connected to the second positioning hole.

4. The concealed hinge according to claim 1, characterized in that, The third link has a first positioning hole, a second positioning hole, and a third positioning hole. The central rotating shaft is connected to the first positioning hole, the third follower rotating shaft is connected to the second positioning hole, and the second follower rotating shaft is connected to the third positioning hole.

5. The concealed hinge according to claim 4, characterized in that, The distance between the first positioning hole and the second positioning hole of the third link is less than the distance between the first positioning hole and the third positioning hole of the third link.

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