Drop-shaped folding hinge

Abstract

The utility model relates to a water-drop-shaped folding hinge which comprises a hinge support. The swing arms are rotatably connected to two opposite sides of the hinge bracket; the swing arm comprises a swing arm cam, a driving block and an adapter block; the screen supporting plate is slidably connected with one side of the swing arm; the screen supporting plate comprises a supporting plate main body and an assembling part; the assembly part is provided with a guide groove; a connecting pin penetrates through the guide groove and then is fixedly connected to the tail end of the driving block; the shell connecting plate is connected to the other side of the swing arm; the shell connecting plate comprises a connecting plate main body; a switching groove is formed in one face of the connecting plate body, and the switching block is embedded into the switching groove. The drop-shaped folding hinge is ingenious in structure, the screen supporting plate slides the swing arm through the driving block, the machine shell connecting plate is connected with the swing arm through the switching block, the swing arm is clamped between the screen supporting plate and the machine shell connecting plate, the screen supporting plate, the machine shell connecting plate and the swing arm are tightly matched, assembly tolerance is effectively eliminated, looseness is prevented, meanwhile, the machine shell connecting plate can be limited to fall off, and the service life is prolonged. And the stability of the whole structure is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding hinges, in particular to a water drop-shaped folding hinge. Background Art

[0002] With the development of flexible OLED display technology, foldable electronic devices have gradually become an important trend in the development of mobile terminals and have become an important field of competition among major terminal manufacturers. Foldable electronic devices usually include two shells, a folding hinge and a flexible screen. The two shells are respectively connected on both sides of the folding hinge, and the two shells can be relatively opened and closed under the action of the folding hinge. The flexible screen is located on the same side of the two shells and the folding hinge. The flexible screen is connected to the shell so that it can be folded or unfolded during the relative opening and closing of the two shells. When the folding hinge is flattened, the flexible screen is flattened on the surface of the two shells and the folding hinge.

[0003] In order to have enough space to accommodate the bending part of the flexible screen in the folded state and prevent the flexible screen from being damaged, the folding hinge will form a space with a teardrop-shaped cross-section after folding. In order to achieve the folding effect of the teardrop-shaped space, the design of the folding hinge often involves multiple moving parts and a sophisticated linkage mechanism. During the manufacturing process of these parts, due to process limitations and material properties, there will inevitably be certain tolerances. Although these tolerances are small, they may accumulate during the assembly process, affecting the stability of the overall structure. Utility Model Content

[0004] Based on this, the utility model provides a teardrop-shaped folding hinge with an ingenious structure. The screen support plate slides through the swing arm through the driving block, and the casing connecting plate is connected to the swing arm through the adapter block. The fit is tight and can effectively absorb assembly tolerances and prevent loosening. At the same time, it can also limit the falling off of the casing connecting plate, greatly improving the stability of the overall structure.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0006] A teardrop-shaped folding hinge, comprising:

[0007] Hinge bracket;

[0008] The swing arm is rotatably connected to the opposite sides of the hinge bracket; the swing arm includes a swing arm cam, a driving block connected to one end of the swing arm cam, and a transfer block connected to the other end of the swing arm cam; the driving block and the driving block are located on the same side of the swing arm cam, and the swing arm cam is rotatably connected to the hinge bracket;

[0009] A screen support plate slidably connected to one side of the swing arm; the screen support plate comprises a support plate body and an assembly part connected to a side of the support plate body facing the driving block; the assembly part is provided with an arc-shaped guide groove; the assembly part is used to attach the driving block, and is fixedly connected to the end of the driving block after passing through the guide groove with a connecting pin, so as to realize the slidable connection between the screen support plate and the swing arm; and

[0010] A casing connecting plate is connected to the other side of the swing arm; the casing connecting plate includes a connecting plate body that is hinged to a supporting plate body; a transfer groove is provided on one side of the connecting plate body that faces the transfer block, and the transfer block is matched and embedded in the interior of the transfer groove to realize the connection and installation between the casing connecting plate and the swing arm.

[0011] The above-mentioned teardrop-shaped folding hinge has an ingenious structure. The screen support plate slides the swing arm through the driving block, the casing connecting plate is connected to the swing arm through the adapter block, and the swing arm is clamped between the screen support plate and the casing connecting plate. The three are tightly matched, which effectively eliminates assembly tolerances and prevents loosening. At the same time, it can also limit the falling off of the casing connecting plate, greatly improving the stability of the overall structure.

[0012] In one of the embodiments, arc-shaped slide grooves are respectively provided on opposite sides of one end of the hinge bracket, and the other end surface of the hinge leg is rotatably mounted with a rotating shaft; the two rotating shafts rotate in opposite directions; and the swing arm cam is coaxially connected to the rotating shaft.

[0013] In one of the embodiments, the screen support plate includes an arc-shaped slider connected to one end of the support plate body, and the arc-shaped slider is used to match and connect the arc-shaped slide groove.

[0014] In one of the embodiments, the screen support plate also includes a first hinged lug protruding from one side of the arc-shaped slider; the casing connecting plate also includes a second hinged lug protruding from one end of the connecting plate body; the second hinged lug corresponds to the first hinged lug, and the second hinged lug and the first hinged lug are penetrated by a fixing pin to realize the mutual hinge connection between the connecting plate body and the support plate body.

[0015] In one of the embodiments, the teardrop-shaped folding hinge also includes a damping assembly elastically connected to one end of each swing arm facing away from the hinge bracket; the damping assembly includes a damping cam installed at the end of the swing arm cam away from the hinge bracket, and a spring elastically abutting against one end of the damping cam; the damping cam sleeve is connected to the rotating shaft.

[0016] In one embodiment, the damping cam is coaxially arranged with the swing arm cam, and the teeth of the damping cam are matched and meshed with the teeth of the swing arm cam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a teardrop-shaped folding hinge according to one embodiment of the utility model;

[0018] Figure 2 for Figure 1 A three-dimensional schematic diagram of the teardrop-shaped folding hinge from another perspective;

[0019] Figure 3 for Figure 1 An exploded schematic diagram of a teardrop-shaped folding hinge is shown;

[0020] Figure 4 for Figure 3 An exploded schematic diagram of the teardrop-shaped folding hinge from another perspective;

[0021] Figure 5 for Figure 3 An exploded comparison diagram of the articulated bracket, swing arm and damping assembly in the teardrop-shaped folding hinge shown;

[0022] Figure 6 for Figure 3 Schematic diagram of assembly of the swing arm and the screen support plate in the teardrop-shaped folding hinge shown;

[0023] Figure 7 for Figure 6 An exploded comparison diagram of the swing arm and the screen support plate in the teardrop-shaped folding hinge shown;

[0024] Figure 8 for Figure 1 The diagrammatic perspective view of the teardrop-shaped folding hinge in a folded state is shown.

[0025] Notes on the attached drawings:

[0026] 10-hinge bracket, 11-arc slide, 12-rotating shaft, 13-intermediate gear;

[0027] 20-swing arm, 21-swing arm cam, 22-driving block, 23-adapter block;

[0028] 30-screen support plate, 31-support plate body, 32-arc-shaped slide block, 33-assembly portion, 34-guide groove, 35-connection pin, 36-first hinge lug;

[0029] 40 - housing connecting plate, 41 - connecting plate body, 42 - second hinged lug, 43 - fixing pin, 44 - adapter slot;

[0030] 50-damping assembly, 51-damping cam, 52-spring. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] See also Figures 1 to 8 , which is a teardrop-shaped folding hinge of an embodiment of the utility model, comprises a hinge bracket 10, swing arms 20 rotatably connected to opposite sides of the hinge bracket 10, a screen support plate 30 slidably connected to one side of the swing arm 20, a housing connection plate 40 connected to the other side of the swing arm 20, and a damping assembly 50 elastically connected to the end of each swing arm 20 facing away from the hinge bracket 10. Among them, the screen support plate 30 is rotatably connected to the hinge bracket 10, and the screen support plate 30 and the housing connection plate 40 are hinged to each other. The swing arm 20 is sandwiched between the screen support plate 30 and the housing connection plate 40, and the three cooperate closely, effectively eliminating assembly tolerances and greatly improving the stability of the overall structure.

[0035] The hinge bracket 10 has arc-shaped slide grooves 11 on opposite sides of one end, and the other end surface of the hinge leg 10 is rotatably mounted with a rotating shaft 12. The two rotating shafts 12 can achieve synchronous movement through multiple intermediate gears 13, that is, the two rotating shafts 12 rotate in opposite directions.

[0036] The swing arm 20 includes a swing arm cam 21 coaxially connected to the rotating shaft 12, a driving block 22 connected to one end of the swing arm cam 21, and an adapter block 23 connected to the other end of the swing arm cam 21. The driving block 22 and the driving block 23 are located on the same side of the swing arm cam 21. The driving block 22 is used to rotatably connect to the screen support plate 30, and the adapter block 23 is used to connect to the housing connection plate 40.

[0037] The screen support plate 30 includes a support plate body 31, an arc-shaped slider 32 connected to one end of the support plate body 31, and a mounting portion 33 connected to a side of the support plate body 31 facing the driving block 22; the mounting portion 33 is provided with an arc-shaped guide groove 34. The arc-shaped slider 32 is used to match and connect the arc-shaped slide groove 11 to achieve a rotatable connection between the screen support plate 30 and the hinge bracket 10. The rotation axis of the arc-shaped slider 32 is staggered with the rotation axis of the swing arm cam 21.

[0038] Specifically, the assembly portion 33 is used to attach the driving block 22, and the connecting pin 35 is passed through the guide groove 34 and fixedly connected to the end of the driving block 22 to achieve a slidable connection between the screen support plate 30 and the swing arm 20. In the actual folding process, since the connecting pin 35 is located inside the guide groove 34, the assembly tolerance can be effectively absorbed to prevent the screen support plate 30 and the swing arm 20 from loosening.

[0039] Furthermore, in this embodiment, the diameter of the connecting pin 35 is equal to the groove width of the guide groove 34, which effectively improves the degree of fit.

[0040] Furthermore, in the present embodiment, the screen support plate 30 further includes a first hinge lug 36 protruding from one side of the arc-shaped slider 32 , and the first hinge lug 36 is used for hingedly connecting the housing connecting plate 40 .

[0041] The housing connecting plate 40 includes a connecting plate body 41 and a second hinged lug 42 protruding from one end of the connecting plate body 41; the second hinged lug 42 corresponds to the first hinged lug 36, and the fixing pin 43 is used to penetrate the second hinged lug 42 and the first hinged lug 36, so as to realize the mutual hinge connection between the connecting plate body 41 and the supporting plate body 31. A transfer groove 44 is provided on the side of the connecting plate body 41 facing the transfer block 23, and the transfer block 23 is matched and embedded in the transfer groove 44 to realize the connection and installation of the housing connecting plate 40 and the swing arm 20, and the assembly tolerance is eliminated in the thickness direction of the housing connecting plate 40, which can effectively prevent the housing connecting plate 40 from falling off, and greatly improve the stability of the overall structure.

[0042] The damping assembly 50 includes a damping cam 51 installed at one end of the swing arm cam 21 away from the hinge bracket 10, and a spring 52 elastically abutting against one end of the damping cam 51. The damping cam 51 is slidably connected to the rotating shaft 12, the damping cam 51 is coaxially arranged with the swing arm cam 21, and the teeth of the damping cam 51 are matched and meshed with the teeth of the swing arm cam 21.

[0043] The above-mentioned teardrop-shaped folding hinge has an ingenious structure. The screen support plate 30 slides the swing arm 20 through the driving block 22, and the casing connecting plate 40 is connected to the swing arm 20 through the adapter block 23. The swing arm 20 is clamped between the screen support plate 30 and the casing connecting plate 40. The three are tightly matched, which effectively eliminates assembly tolerances and prevents loosening. At the same time, it can also limit the falling off of the casing connecting plate 40, greatly improving the stability of the overall structure.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A teardrop-shaped folding hinge, characterized in that: include: Hinge bracket; The swing arm is rotatably connected to the opposite sides of the hinge bracket; the swing arm includes a swing arm cam, a driving block connected to one end of the swing arm cam, and a transfer block connected to the other end of the swing arm cam; the driving block and the driving block are located on the same side of the swing arm cam, and the swing arm cam is rotatably connected to the hinge bracket; A screen support plate slidably connected to one side of the swing arm; the screen support plate comprises a support plate body and an assembly part connected to a side of the support plate body facing the driving block; the assembly part is provided with an arc-shaped guide groove; the assembly part is used to attach the driving block, and is fixedly connected to the end of the driving block after passing through the guide groove with a connecting pin, so as to realize the slidable connection between the screen support plate and the swing arm; and A casing connecting plate is connected to the other side of the swing arm; the casing connecting plate includes a connecting plate body that is hinged to a supporting plate body; a transfer groove is provided on one side of the connecting plate body that faces the transfer block, and the transfer block is matched and embedded in the interior of the transfer groove to realize the connection and installation between the casing connecting plate and the swing arm.

2. The teardrop-shaped folding hinge according to claim 1, characterized in that: The opposite sides of one end of the hinge bracket are respectively provided with arc-shaped sliding grooves, and the end surfaces of the other ends of the hinge legs are respectively rotatably mounted with rotating shafts; the directions of the two rotating shafts are opposite; and the swing arm cam is coaxially connected to the rotating shaft.

3. The teardrop-shaped folding hinge according to claim 2, characterized in that: The screen support plate comprises an arc-shaped sliding block connected to one end of the support plate body, and the arc-shaped sliding block is used for matching and connecting the arc-shaped sliding groove.

4. The teardrop-shaped folding hinge according to claim 1, characterized in that: The screen support plate also includes a first hinged lug protruding from one side of the arc-shaped slider; the casing connecting plate also includes a second hinged lug protruding from one end of the connecting plate body; the second hinged lug corresponds to the first hinged lug, and the second hinged lug and the first hinged lug are penetrated by a fixing pin to realize the mutual hinge connection between the connecting plate body and the support plate body.

5. The teardrop-shaped folding hinge according to claim 1, characterized in that: It also includes a damping assembly elastically connected to one end of each swing arm facing away from the hinge bracket; the damping assembly includes a damping cam installed at one end of the swing arm cam away from the hinge bracket, and a spring elastically abutting against one end of the damping cam; the damping cam sliding sleeve is connected to the rotating shaft.

6. The teardrop-shaped folding hinge according to claim 5, characterized in that: The damping cam is coaxially arranged with the swing arm cam, and the teeth of the damping cam are matched and meshed with the teeth of the swing arm cam.

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