Disc spring torque supply mechanism

Abstract

The disc spring torque supply mechanism comprises a first base, a first fixed block arranged on the first base, and a first locking piece, a first arc-shaped sliding channel matched with a left rotating arm and a second arc-shaped sliding channel matched with a right rotating arm are formed between the first fixed block and the first base, and the first locking piece connects the first fixed block and the first base through a plurality of stacked first disc springs. The first locking piece of the disc spring torque supply mechanism connects the first fixed block and the first base through a plurality of stacked first disc springs, so that the first fixed block is elastically pressed against the left rotating arm and the right rotating arm, torque and the like can be provided for the rotation of the left rotating arm and the right rotating arm, the stability and reliability of the rotation are ensured, the operation feeling and comfort are better, the size of the torque is adjusted by increasing the number of the first disc springs or adjusting the pressure degree of the first disc springs, and the disc spring torque supply mechanism is better applied to various inner folding screen mobile terminals such as mobile phones and tablet computers.

Description

Technical Field

[0001] The present disclosure relates to flexible screen electronic devices, and in particular to a disc spring torque supply mechanism for an inward-folding flexible screen mobile terminal. Background Art

[0002] With the continuous progress of society and the rapid development of science and technology, electronic products are updated and replaced very quickly. Users have higher and higher requirements for the use of electronic products, resulting in more and more diversified functions of electronic products, and many new forms of electronic products have emerged. For example, mobile terminals such as smartphones and tablets with flexible screens will become the current research and development hotspots and new trends. For mobile terminals, flexible screens are an ideal and emerging screen. The mobile terminal is folded when carried and flattened when used to obtain a double display, which meets the demand for large-screen displays and can give people a sense of implicitness, maturity, and stability. At present, for mobile terminals with flexible screens, the problem that needs to be solved is how to design a folding mechanism to support and fold the flexible screen, reduce damage to the bend of the flexible screen, improve the stability, reliability, operational feel, and comfort of the rotation and folding, and increase the service life so that the flexible screen can be better applied to mobile terminals. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a disc spring torque supply mechanism that can solve at least one of the above technical problems. The technical solution of the present disclosure is as follows:

[0004] A disc spring torque supply mechanism includes a first base, a first fixed block and a first locking member arranged on the first base, a first arc-shaped slideway cooperating with the left rotating arm and a second arc-shaped slideway cooperating with the right rotating arm are formed between the first fixed block and the first base, the first locking member connects the first fixed block with the first base through several stacked first disc springs, and can make the first fixed block elastically press against the left rotating arm and the right rotating arm to provide torque for the rotation of the left rotating arm and the right rotating arm.

[0005] In some embodiments, the left rotating arm has a first arcuate sliding portion, the first arcuate slide includes first arcuate ribs respectively cooperating with both side edges of the first arcuate sliding portion, and the two first arcuate ribs are respectively located above both side edges of the first arcuate sliding portion.

[0006] In some embodiments, the right rotating arm has a second arc-shaped sliding portion, and the second arc-shaped slide includes second arc-shaped ribs respectively cooperating with both side edges of the second arc-shaped sliding portion, and the two second arc-shaped ribs are respectively located above the two side edges of the second arc-shaped sliding portion.

[0007] In some embodiments, a first slot body is provided on the first base to cooperate with the first fixing block, and a first arc-shaped portion is provided in the first slot body to cooperate with the left rotating arm and the right rotating arm respectively.

[0008] In some embodiments, the first locking member is a first screw, which passes through a plurality of stacked first disc springs to connect the first fixing block to the first base.

[0009] In some embodiments, a first threaded hole connected to the first screw is provided on the first base, a first through hole cooperating with the first screw is provided on the first fixing block, the first through hole corresponds to the first threaded hole, the first disc spring is located above the first through hole, and the diameter of the first disc spring is larger than the diameter of the first through hole.

[0010] In some embodiments, a second slot body that cooperates with the first disc spring is provided on the first fixing block, and the first through hole is located on the bottom surface of the second slot body.

[0011] In some embodiments, a first protrusion is provided at the bottom of the first fixing block, a third groove body matching the first protrusion is provided on the first base, the first through hole is located on the first protrusion, and the first threaded hole is located on the bottom surface of the third groove body.

[0012] In some embodiments, a second protrusion is provided on the bottom surface of the third groove body, the first threaded hole is provided on the second protrusion, and the second protrusion can be inserted into the first through hole.

[0013] In some embodiments, first screws are respectively provided on both sides of the left rotating arm and both sides of the right rotating arm.

[0014] The beneficial effect of the present invention is that during use, the left rotating arm and the right rotating arm rotate synchronously in opposite directions, so that the corresponding left shell and the right shell rotate synchronously in opposite directions, so that the flexible screen is opened and flattened and folded inward and closed. In the process of the left rotating arm rotating along the first arc slide and the right rotating arm rotating along the second arc slide, the first locking member connects the first fixed block to the first base through several stacked first disc springs, so that the first fixed block elastically presses against the left rotating arm and the right rotating arm, thereby providing suitable friction damping force for the rotation of the left rotating arm and the right rotating arm, that is, providing torque for the rotation of the left rotating arm and the right rotating arm, etc., ensuring the stability and reliability of the rotation, and providing better operational feel and comfort. By increasing the number of the first disc springs or adjusting the pressure degree of the first disc springs, etc., it is easy to adjust the size of the torque. The structure is simple and stable, and the operation is very convenient, which improves the service life of the product and facilitates better application in various inward-folding screen mobile terminals such as mobile phones and tablets, thereby expanding the application and development of the product.

[0015] In addition, in the technical solutions disclosed herein, anything not specifically stated can be implemented by conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is an exploded view of a disc spring torque supply mechanism according to an embodiment of the present invention.

[0018] Figure 2 This is a structural schematic diagram of a disc spring torque supply mechanism according to an embodiment of the present invention.

[0019] Figure 3 An embodiment of the present disclosure Figure 2 A partial enlarged view of point A in the middle.

[0020] Figure 4 An embodiment of the present disclosure Figure 2 A partial enlarged view of point B in the middle.

[0021] Figure 5 This is a cross-sectional view of a disc spring torque supply mechanism according to an embodiment of the present disclosure.

[0022] The numbers in the accompanying drawings are as follows: first base 1, first groove body 11, first arc-shaped portion 111, first threaded hole 12, third groove body 13, second protrusion 14, first locking member 2, first screw 21, first fixing block 3, first arc-shaped slide 31, first arc-shaped rib 311, second arc-shaped slide 32, second arc-shaped rib 321, second groove body 33, first through hole 34, first protrusion 35, first position limiting support plate 36, second position limiting support plate 37, left rotating arm 4, first arc-shaped sliding portion 41, fourth groove body 42, right rotating arm 5, second arc-shaped sliding portion 51, fifth groove body 52, first disc spring 6. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present disclosure, rather than all of the embodiments, and are only used to explain the present disclosure and are not intended to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0024] In the description of the present disclosure, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "two ends", "both sides", "bottom", "top", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary", etc. are used for descriptive purposes only and can be simply used to more clearly distinguish different components, but cannot be understood as indicating or implying relative importance.

[0025] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0026] See also Figures 1 to 5 The figure shows a schematic diagram of a disc spring torque supply mechanism according to the present disclosure, which is mainly used to provide appropriate torque for the folding and rotation of a flexible screen mobile terminal. The disc spring torque supply mechanism includes a first base 1, a first fixed block 3 and a first locking member 2. The first fixed block 3 is arranged on the first base 1. The first locking member 2 connects the first fixed block 3 to the first base 1 through a first disc spring 6. The first locking member 2 can be one or more than two evenly distributed along the length direction of the first fixed block 3. The first disc spring 6 that cooperates with each first locking member 2 can be one or multiple first disc springs 6 stacked in sequence to cooperate with each first locking member 2. A first arc-shaped slide 31 cooperating with the left rotating arm 4 and a second arc-shaped slide 32 cooperating with the right rotating arm 5 are formed between the first fixed block 3 and the first base 1. The left rotating arm 4 can rotate along the first arc-shaped slide 31, and the right rotating arm 5 can rotate along the second arc-shaped slide 32. After the first locking member 2 passes through the first disc spring 6 to connect the first fixed block 3 with the first base 1, the compressed first disc spring 6 can act on the first fixed block 3, so that the first fixed block 3 is elastically pressed against the left rotating arm 4 and the right rotating arm 5.

[0027] During use, the left rotating arm 4 is connected to the corresponding left housing, the right rotating arm 5 is connected to the corresponding right housing, and the corresponding flexible screen is connected to the left housing and the right housing respectively. The left rotating arm 4 and the right rotating arm 5 rotate synchronously in opposite directions, so that the corresponding left housing and the right housing rotate synchronously in opposite directions, so that the flexible screen can be unfolded and folded inward. During the rotation of the left rotating arm 4 along the first curved slide 31 and the right rotating arm 5 along the second curved slide 32, the first locking member 2 connects the first fixed block 3 to the first base 1 through a plurality of stacked first disc springs 6, so that the first fixed block 3 is elastically pressed against the left rotating arm 4 and the right rotating arm 5, thereby providing appropriate friction damping force for the rotation of the left rotating arm 4 and the right rotating arm 5, that is, providing torque for the rotation of the left rotating arm 4 and the right rotating arm 5, etc., ensuring the stability and reliability of the rotation, and improving the operating feel and comfort. By increasing the number of first disc springs 6 or adjusting the degree of pressure on the first disc springs 6, the magnitude of the torque can be easily adjusted.

[0028] The left rotating arm 4 has a first arc-shaped sliding portion 41, and the first arc-shaped slide 31 includes first arc-shaped ribs 311 respectively cooperating with the two side edges of the first arc-shaped sliding portion 41. The two first arc-shaped ribs 311 are respectively located above the two side edges of the first arc-shaped sliding portion 41. There is an avoidance interval cooperating with the first arc-shaped sliding portion 41 between the two first arc-shaped ribs 311. The first fixed block 3 is elastically pressed against the first arc-shaped sliding portion 41 of the left rotating arm 4 through the two first arc-shaped ribs 311. The first arc-shaped sliding portion 41 rotates along the two first arc-shaped ribs 311, which is more stable and reliable. The left rotating arm 4 and the right rotating arm 5 have basically the same structure. Similarly, the right rotating arm 5 has a second arc-shaped sliding portion 51, and the second arc-shaped slide 32 includes second arc-shaped ribs 321 respectively cooperating with the two side edges of the second arc-shaped sliding portion 51. The two second arc-shaped ribs 321 are respectively located above the two side edges of the second arc-shaped sliding portion 51. There is an avoidance interval cooperating with the second arc-shaped sliding portion 51 between the two second arc-shaped ribs 321. The first fixed block 3 is elastically pressed against the second arc-shaped sliding portion 51 of the right rotating arm 5 through the two second arc-shaped ribs 321, and the second arc-shaped sliding portion 51 rotates along the two second arc-shaped ribs 321.

[0029] The first fixed block 3 is also provided with a first limit support plate 36 and a second limit support plate 37. The first limit support plate 36 is located between the two first arc-shaped retaining edges 311, and the first limit support plate 36 is located below the first arc-shaped sliding portion 41. The outer side of the first arc-shaped sliding portion 41 is provided with a fourth groove body 42 that cooperates with the first limit support plate 36. The second limit support plate 37 is located between the two second arc-shaped retaining edges 321. The second limit support plate 37 is located below the second arc-shaped sliding portion 51. The outer side of the second arc-shaped sliding portion 51 is provided with a fifth groove body 52 that cooperates with the second limit support plate 37. When the left rotating arm 4 and the right rotating arm 5 rotate synchronously in opposite directions to open outward and level, the fourth groove 42 on the rotating arm 4 cooperates with the first limit support plate 36 to limit the position, and the fifth groove 52 on the right rotating arm 5 cooperates with the second limit support plate 37 to limit the position, which is more stable and reliable. The first limit support plate 36 and the second limit support plate 37 can also enhance the structural strength of the first fixed block 3.

[0030] The first base 1 is provided with a first groove body 11 that cooperates with the first fixed block 3. The first groove body 11 is provided with a first arc-shaped portion 111 that cooperates with the left rotating arm 4 and the right rotating arm 5 respectively. The first fixed block 3 is placed in the first groove body 11. The two first arc-shaped portions 111 correspond to the left rotating arm 4 and the right rotating arm 5 respectively. The first arc-shaped sliding portion 41 of the left rotating arm 4 rotates along one of the first arc-shaped portions 111 and the two first arc-shaped retaining edges 311, and the second arc-shaped sliding portion 51 of the right rotating arm 5 rotates along the other first arc-shaped portion 111 and the two second arc-shaped retaining edges 321. The structure is more compact, the volume is smaller, the movement is smoother and more reliable, and the operation is more convenient.

[0031] The first locking member 2 is a first screw 21, which passes through several stacked first disc springs 6 to connect the first fixing block 3 to the first base 1, providing convenient operation. The first base 1 is provided with a first threaded hole 12 connected to the first screw 21, and the first fixing block 3 is provided with a first through hole 34 that cooperates with the first screw 21. The first through hole 34 corresponds to the first threaded hole 12. The first disc spring 6 is located above the first through hole 34, and the diameter of the first disc spring 6 is larger than the diameter of the first through hole 34. Typically, multiple first disc springs 6 are stacked together in sequence. The first screw 21 passes through the inner holes of each first disc spring 6 and the first through hole 34, and then connects to the first threaded hole 12 on the first base 1. The topmost first disc spring 6 cooperates with the head of the first screw 21, and the bottommost first disc spring 6 presses against the first fixing block 3. The structure is simple and adjustment and other operations are very convenient.

[0032] First screws 21 are respectively provided on both sides of the left rotating arm 4 and both sides of the right rotating arm 5, so that the force is more evenly distributed and the structure is more stable and reliable.

[0033] The first fixing block 3 is also provided with a second slot body 33 that cooperates with the first disc spring 6. The first through hole 34 is located on the bottom surface of the second slot body 33. The first disc spring 6 is located in the second slot body 33. The structure is more compact, stable and smaller in size.

[0034] A first protrusion 35 is also provided at the bottom of the first fixed block 3, and a third groove body 13 cooperating with the first protrusion 35 is provided on the first base 1. The first through hole 34 is located on the first protrusion 35, and the first threaded hole 12 is located on the bottom surface of the third groove body 13. The first protrusion 35 is located in the third groove body 13. When the pressure degree of the first disc spring 6 is adjusted by the first screw 21, the first protrusion 35 can slide up and down along the third groove body 13, and the structure is more compact, stable and smaller in size.

[0035] A second protrusion 14 is also provided on the bottom surface of the third groove body 13, and the first threaded hole 12 is provided on the second protrusion 14. The second protrusion 14 can be inserted into the first through hole 34. When the pressure degree of the first disc spring 6 is adjusted by the first screw 21, the first protrusion 35 can slide up and down along the third groove body 13, and the second protrusion 14 can slide up and down relatively along the first through hole 34. The structure is more compact, stable and smaller in size.

[0036] Compared with the prior art, the advantages of the present invention are as follows: the left rotating arm 4 and the right rotating arm 5 rotate synchronously in opposite directions, so that the corresponding left shell and the right shell rotate synchronously in opposite directions, realizing the flexible screen opening and flattening and folding inward and closing. During the rotation of the left rotating arm 4 along the first arc slide 31 and the right rotating arm 5 along the second arc slide 32, the first locking member 2 passes through the stacked first disc spring 6 to connect the first fixed block 3 with the first base 1, so that the first fixed block 3 is elastically pressed against the left rotating arm 4 and the right rotating arm 5, thereby providing appropriate friction damping force for the rotation of the left rotating arm 4 and the right rotating arm 5, that is, providing torque for the rotation of the left rotating arm 4 and the right rotating arm 5, etc., ensuring the stability and reliability of the rotation, and providing better operating feel and comfort. By increasing the number of the first disc spring 6 or adjusting the pressure degree of the first disc spring 6, etc., the size of the torque can be easily adjusted. The structure is simple, compact, stable, small in size, and very convenient to operate, which improves the service life of the product and facilitates better application in various inward-folding screen mobile terminals such as mobile phones and tablets, thereby expanding the application and development of the product.

[0037] The above descriptions are merely some embodiments of the present disclosure and are intended to illustrate the technical solutions of the present disclosure, not to limit them. It should be understood that those skilled in the art may make modifications or substitutions based on the above descriptions without departing from the inventive concept of the present disclosure, and all such modifications and substitutions shall fall within the scope of protection of the appended claims of the present disclosure. In such cases, all details may be replaced with equivalent elements, and the materials, shapes, and dimensions may be arbitrary.

Claims

1. Disc spring torque supply mechanism, characterized in that: The invention comprises a first base (1), a first fixed block (3) and a first locking member (2) arranged on the first base (1); a first arc-shaped slideway (31) cooperating with the left rotating arm (4) and a second arc-shaped slideway (32) cooperating with the right rotating arm (5) are formed between the first fixed block (3) and the first base (1); the first locking member (2) connects the first fixed block (3) with the first base (1) through a plurality of stacked first disc springs (6), and can make the first fixed block (3) elastically press against the left rotating arm (4) and the right rotating arm (5) to provide torque for the rotation of the left rotating arm (4) and the right rotating arm (5); The first locking member (2) is a first screw (21); The first base (1) is provided with a first threaded hole (12) connected to the first screw (21), and the first fixing block (3) is provided with a first through hole (34) matched with the first screw (21); A first protrusion (35) is provided at the bottom of the first fixing block (3); a third groove (13) matching the first protrusion (35) is provided on the first base (1); the first through hole (34) is located on the first protrusion (35); and the first threaded hole (12) is located on the bottom surface of the third groove (13); A second convex block (14) is provided on the bottom surface of the third trough body (13), the first threaded hole (12) is provided on the second convex block (14), and the second convex block (14) can be inserted into the first through hole (34); The left rotating arm (4) has a first arc-shaped sliding portion (41), and the first arc-shaped slideway (31) includes first arc-shaped retaining edges (311) respectively matched with two side edges of the first arc-shaped sliding portion (41), and the two first arc-shaped retaining edges (311) are respectively located above the two side edges of the first arc-shaped sliding portion (41); The right rotating arm (5) has a second arc-shaped sliding portion (51), and the second arc-shaped slideway (32) includes second arc-shaped ribs (321) respectively matched with two side edges of the second arc-shaped sliding portion (51), and the two second arc-shaped ribs (321) are respectively located above the two side edges of the second arc-shaped sliding portion (51); The first fixing block (3) is further provided with a first position-limiting support plate (36) and a second position-limiting support plate (37), wherein the first position-limiting support plate (36) is located between the two first arc-shaped retaining edges (311), and the second position-limiting support plate (37) is located between the two second arc-shaped retaining edges (321).

2. The disc spring torque supply mechanism according to claim 1, characterized in that: The first base (1) is provided with a first slot body (11) that matches the first fixed block (3), and the first slot body (11) is provided with a first arc portion (111) that matches the left rotating arm (4) and the right rotating arm (5) respectively.

3. The disc spring torque supply mechanism according to any one of claims 1 to 2, characterized in that: The first screw (21) passes through a plurality of stacked first disc springs (6) to connect the first fixing block (3) to the first base (1).

4. The disc spring torque supply mechanism according to claim 3, characterized in that: The first through hole (34) corresponds to the first threaded hole (12), the first disc spring (6) is located above the first through hole (34), and the diameter of the first disc spring (6) is larger than the diameter of the first through hole (34).

5. The disc spring torque supply mechanism according to claim 4, characterized in that: A second slot body (33) matching the first disc spring (6) is provided on the first fixing block (3), and the first through hole (34) is located on the bottom surface of the second slot body (33).

6. The disc spring torque supply mechanism according to claim 5, characterized in that: The first screws (21) are respectively provided on both sides of the left rotating arm (4) and both sides of the right rotating arm (5).

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