Ratchet hinge

Abstract

The present invention relates to the technical field of hinges, and provides a ratchet hinge, which includes a hinge body, a ratchet group, a torsion washer assembly and a base frame; the hinge body includes a driving shaft and a driven shaft that can be movably connected; the ratchet group is sleeved at the movable joint between the driving shaft and the driven shaft; the torsion washer assembly is sleeved on the driven shaft, and can store or release torsional potential energy when the driven shaft rotates; the base frame is installed and connected to the hinge body, and has a limiting portion for locking the ratchet group; when the ratchet group rotates relatively to a preset angle, the limiting portion corresponds to a stopper to lock the ratchet group. The ratchet hinge can be applied to the screen of a notebook computer, and can realize the single-handed easy opening and closing function of the notebook computer screen, and has the beneficial effects of simple structure, labor-saving rotation and opening and closing, and low cost.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hinges, and in particular to a ratchet hinge. Background Art

[0002] In the prior art, the screens of laptop computers are all rotatably hinged to the body through hinges. Traditional screen hinges cannot achieve opening and closing the screen with one hand, and the other hand is required to press the body accordingly when using it. Therefore, in order to improve the portability when opening and closing the screen, the screen hinges that can achieve one-handed opening and closing in the industry are roughly divided into two categories: spring hinges and segmented torsion hinges.

[0003] Among them, the spring-type hinge requires a large enough counterweight on the body, otherwise it cannot be opened and closed with one hand. However, this also makes the spring-type hinge unable to be applied to most thin and light laptops, unless the system counterweight is added to the thin and light body, but this is obviously not worth the loss; the more distinctive feature of the segmented torsion hinge is that it is very easy to open and close at a small angle, with almost no resistance. However, within the range of 10°~15°, the screen cannot remain stable well, and will close directly when it loses external support. Moreover, as the screen opening and closing angle increases, the damping will also increase step by step, and the user experience is that the screen is "stuck" at several angles. In addition, the cost price of the segmented torsion hinge is relatively high and the space occupied is relatively large.

[0004] In view of this, there is an urgent need for a hinge with a new structure in the market to solve the problem that the hinge in the prior art is difficult to achieve the one-handed opening and closing function of the laptop screen. Summary of the invention

[0005] The disclosed embodiment provides a ratchet hinge to solve the problem in the prior art that it is difficult for hinges to achieve the one-handed opening and closing function of a laptop computer screen.

[0006] The ratchet hinge provided by the embodiment of the present disclosure includes a hinge shaft body, a ratchet assembly, a torsion washer assembly and a base frame;

[0007] The hinge shaft body comprises a driving shaft and a driven shaft that can be movably connected to each other;

[0008] The ratchet assembly is sleeved on the movable joint between the driving shaft and the driven shaft;

[0009] The torsion washer assembly is sleeved on the driven shaft and is capable of storing or releasing torsional potential energy when the driven shaft rotates;

[0010] The base frame is installed and connected with the hinge shaft body, and has a limiting portion for locking the ratchet assembly;

[0011] Wherein, when the ratchet assembly is relatively rotated to a preset angle, the limiting portion locks the ratchet assembly corresponding to the stopper.

[0012] In one embodiment, the ratchet assembly includes a driving ratchet and a driven ratchet;

[0013] The active ratchet is fixedly sleeved on the end portion of the active shaft and the driven shaft movably connected, and is provided with an active ratchet ring facing the driven shaft;

[0014] The driven ratchet is fixedly sleeved on the end of the driven shaft movably connected to the driving shaft, and is provided with a driven ratchet ring facing the driving shaft;

[0015] Wherein, the active ratchet and the driven ratchet are meshed with each other, and the active ratchet can rotate unidirectionally relative to the driven ratchet along with the active shaft.

[0016] In one possible implementation manner, the active ratchet wheel is also partially provided with an axial stop edge in its own wheel circumference;

[0017] When the ratchet assembly rotates relatively to a preset angle, the limiting portion abuts against the axial stopper along the axial direction of the driving shaft to stop and lock the driving ratchet so that it no longer jumps axially relative to the driven ratchet.

[0018] In one possible implementation manner, the active ratchet wheel is also partially provided with an angle limiting edge on its wheel circumference;

[0019] When the active shaft rotates to a limiting angle, the limiting portion abuts against a corresponding stopper along the circumference of the active ratchet wheel and the angle limiting edge to limit the limit rotation angle of the hinge shaft body.

[0020] In one possible implementation manner, the active shaft is further provided with a corrugated gasket and a moving shaft gasket between its own mounting shoulder and the active ratchet.

[0021] In one possible implementation manner, the driven ratchet wheel is further provided with an insertion boss on a side facing away from the driven ratchet ring;

[0022] The shoulder of the driven shaft is provided with an insertion groove correspondingly;

[0023] The driven ratchet is fixedly mounted on the driven shaft by means of the insertion boss being fixedly inserted into the insertion groove;

[0024] Alternatively, the driven ratchet is integrally connected to the driven shaft.

[0025] In one possible implementation manner, the mating portion of the driving shaft is protruding to form a plug connector, and the mating portion of the driven shaft is recessed to form a receiving socket;

[0026] A circular groove is correspondingly provided in the peripheral wall of the plug connector;

[0027] The driven shaft has a circular through hole in the peripheral wall corresponding to the receiving hole;

[0028] A circular through hole corresponding to the circular through hole is provided in the circumferential surface of the driven ratchet wheel;

[0029] The driving shaft is inserted into the receiving hole through the plug connector, and is movably connected to the driven shaft by correspondingly arranging connecting pieces in the circular groove and the circular through hole.

[0030] In one possible implementation manner, the connecting member is a connecting ball, and the connecting ball can pass through the round through hole and be placed in the round through hole, and at least partially abut against the round groove;

[0031] Alternatively, the connecting member is a connecting nail, and the head of the connecting nail is riveted or welded to the peripheral wall of the driven ratchet, and the nail rod of the connecting nail passes through the circular through hole and at least partially extends into the circular groove.

[0032] In one embodiment, the base frame further includes a sleeve portion for sleeve-fitting with the driven shaft;

[0033] The sleeve portion is sleeved on the driven shaft by cooperating with a friction stator and a friction movable plate.

[0034] In one possible embodiment, the torsion washer assembly includes a plurality of closely abutting dish-shaped washers;

[0035] There is an assembly deformation gap between at least two adjacent disc-shaped gaskets;

[0036] One end of the driving shaft away from the driven shaft is also connected with a mounting frame.

[0037] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0038] The ratchet hinge provided by the embodiment of the present disclosure can be specifically but not limited to being applied to the screen of a laptop computer. Through the ratchet group in the hinge shaft body itself, the screen can be easily opened and closed in one direction with one hand. Through the torsion gasket assembly in the hinge shaft body, the screen can be further opened and closed as well as reversely rotated and closed. It has the beneficial effects of simple structure, labor-saving rotation and opening and closing, and low manufacturing cost.

[0039] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0041] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0042] Figure 1 A three-dimensional view of a ratchet hinge provided by an embodiment of the present disclosure is shown;

[0043] Figure 2 An exploded view of the structure of a ratchet hinge provided by an embodiment of the present disclosure is shown;

[0044] Figure 3 An exploded view of a ratchet hinge structure provided by an embodiment of the present disclosure is shown;

[0045] Figure 4 A three-dimensional half-section diagram showing a first structure of a ratchet hinge provided by an embodiment of the present disclosure;

[0046] Figure 5 A three-dimensional structural diagram of a ratchet assembly in a ratchet hinge provided by an embodiment of the present disclosure is shown;

[0047] Figure 6 A three-dimensional half-section view of a second structure of a ratchet hinge provided in an embodiment of the present disclosure is shown.

[0048] Explanation of the reference numerals in the figure: 1, hinge shaft body; 11, driving shaft; 111, wave-shaped gasket; 112, driving shaft gasket; 113, circular groove; 12, driven shaft; 121, receiving groove; 122, circular through hole; 13, connecting piece;

[0049] 2. ratchet assembly; 21. active ratchet; 211. active ratchet ring; 212. axial stop edge; 213. angle limit clamp edge; 22. driven ratchet; 221. driven ratchet ring; 222. insertion boss; 223. round through hole;

[0050] 3. Torque washer assembly; 31. Disc washer;

[0051] 4. Base frame; 41. Limiting part; 42. Set part; 421. Friction stator; 422. Friction moving plate;

[0052] 5. Mounting bracket. DETAILED DESCRIPTION

[0053] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0054] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0055] Combination Figure 1 and Figure 2 As shown, the embodiment of the present disclosure provides a ratchet hinge, which includes a hinge shaft body 1, a ratchet group 2, a torsion gasket assembly 3 and a base frame 4; the hinge shaft body 1 includes a driving shaft 11 and a driven shaft 12 that can be movably connected; the ratchet group 2 is sleeved at the movable connection between the driving shaft 11 and the driven shaft 12; the torsion gasket assembly 3 is sleeved on the driven shaft 12, and can store or release torsional potential energy when the driven shaft 12 rotates; the base frame 4 is installed and connected to the hinge shaft body 1, and has a limiting portion 41 for locking the ratchet group 2; wherein, when the ratchet group 2 rotates relatively to a preset angle, the limiting portion 41 corresponds to the stopper to lock the ratchet group 2.

[0056] The ratchet hinge can be specifically but not limitedly applied to the screen of a notebook computer, and can achieve the beneficial effect of easily opening and closing the screen of the notebook computer with one hand. This example is used to explain the specific use process of the ratchet hinge.

[0057] The ratchet hinge provided by the embodiment of the present disclosure can be assembled by first installing and connecting the driven shaft 12 in the hinge shaft body 1 with the base frame 4 through the torsion gasket assembly 3, and then fixing it with the body of the notebook computer through the base frame 4, and then movably connecting the driving shaft 11 in the hinge shaft body 1 with the driven shaft 12 through the ratchet assembly 2, and finally fixing the driving shaft 11 with the screen of the notebook computer through the mounting frame 5, so that the hinged installation of the screen, the ratchet hinge and the body can be realized.

[0058] When the user opens the screen with one hand, the hinge shaft body 1 will be subjected to a torsional force. Since the response external force required for the rotation of the ratchet group 2 is much smaller than the response external force of the torsion gasket assembly 3, the ratchet group 2 in the ratchet hinge will first produce a unidirectional rotation under the drive of the user's smaller one-handed torsional force, and only the active shaft 11 will rotate unidirectionally relative to the driven shaft 12. Moreover, the larger resistance inside the torsion gasket assembly 3 causes the driven shaft 12 to not rotate at any angle relative to the base frame 4. Furthermore, when the relative rotation of the ratchet group 2 reaches a preset angle (the preset angle can be specifically set to 90°, 95°, 100°, etc.), the limiting portion 41 in the base frame 4 can correspond to the stop and lock the ratchet group 2, so that the ratchet group 2 will no longer produce any unidirectional rotation, that is, at this time, the stop and locked ratchet group 2 will fix the active shaft 11 and the driven shaft 12. When the user wants to continue to open the screen to a greater angle, the user needs to further increase the applied torsional force and make the torsional force overcome the internal resistance of the torsion gasket assembly 3. At this time, the driven shaft 12 and the active shaft 11 can rotate relative to the base frame 4, thereby achieving further opening of the screen.

[0059] Moreover, when the user needs to cover the screen, it is necessary to apply a reverse torsional force to the screen. Due to the unidirectional rotation characteristics of the ratchet group 2, the ratchet group 2 is equivalent to fixing the active shaft 11 and the driven shaft 12. The user's torsional force on the screen will still act on the torsion gasket assembly 3, and overcome the internal resistance of the torsion gasket assembly 3 to make the screen rotate in the opposite direction to cover it. In the process of gradually covering the screen, the relative angle between the ratchet group 2 and the limit part 41 will gradually decrease and reset, until the screen is completely covered on the body, the relative angle between the ratchet group 2 and the limit part 41 will reset to zero, so that the limit part 41 no longer has any stopping and locking effect on the ratchet group 2. Therefore, when the screen is covered and opened again, the ratchet group 2 can still continue to perform the above-mentioned one-handed screen opening action normally, thereby ensuring that the ratchet hinge can normally meet the needs of multiple opening and covering of the screen.

[0060] It is also worth mentioning that due to its own structural characteristics, the ratchet group 2 will produce a "click-click-click" mechanical collision sound when it rotates normally in one direction. Therefore, the user can intuitively feel this when opening the screen with one hand, and the ratchet group 2 has a graduation angle. For example, when the graduation angle of the ratchet group 2 is specifically 15°, when the user opens the screen between 0° and 90°, the screen will hover at 15°, 30°, 45°, 60°, 75°, and 90°. At other angles, the ratchet group 2 may fall back to the upper ratchet under the influence of the ratchet inclined surface guide force. For example, when the screen is opened to 40° and you let go, the screen may fall back to 30°. Therefore, the specific graduation angle selected by the ratchet group 2 can be adjusted according to the specific usage conditions.

[0061] In summary, when the ratchet hinge provided by the embodiment of the present disclosure is applied to the screen of a laptop computer, the user can easily open the screen with one hand within a preset angle, which has the beneficial effects of saving effort in opening the screen with one hand, simple structure and low cost.

[0062] In one embodiment, the ratchet group 2 includes an active ratchet 21 and a driven ratchet 22; the active ratchet 21 is fixedly sleeved on the end of the active shaft 11 and the driven shaft 12 that are movably connected, and is provided with an active ratchet ring 211 facing the driven shaft 12; the driven ratchet 22 is fixedly sleeved on the end of the driven shaft 12 and the active shaft 11 that are movably connected, and is provided with a driven ratchet ring 221 facing the active shaft 11; wherein the active ratchet 21 and the driven ratchet 22 are meshed with each other, and the active ratchet 21 can rotate unidirectionally relative to the driven ratchet 22 along with the active shaft 11.

[0063] Specific, combined Figure 2 and Figure 3 To further explain in detail, the ratchet assembly 2 is specifically configured to include an active ratchet 21 and a driven ratchet 22 , and both the active ratchet 21 and the driven ratchet 22 can be made of wear-resistant metal materials.

[0064] Since the active ratchet 21 is fixedly sleeved on the connecting end of the active shaft 11, and the driven ratchet 22 is fixedly sleeved on the connecting end of the driven shaft 12, and the active ratchet ring 211 of the active ratchet 21 and the driven ratchet ring 221 of the driven ratchet 22 are meshed with each other, it can be ensured that the active shaft 11 can only rotate in one direction relative to the driven shaft 12 along with the active ratchet 21.

[0065] Of course, the ratchet set 2 is specifically configured as two meshing ratchets, and of course it can also be configured as three or four ratchets that mesh in one direction in sequence.

[0066] The specific configuration of the ratchet assembly 2 has the beneficial effects of being simple in structure and being able to stably realize the function that the driving shaft 11 can only rotate in one direction relative to the driven shaft 12 .

[0067] In one embodiment, the active ratchet 21 is also partially provided with an axial stop edge 212 in its own wheel circumference; when the ratchet assembly 2 rotates relatively to a preset angle, the limiting portion 41 corresponds to the axial stop edge 212 along the axial direction of the active shaft 11 to stop and lock the active ratchet 21 so that it no longer jumps axially relative to the driven ratchet 22.

[0068] Specific, combined Figure 1 and Figure 3To further explain in detail, an axial stop edge 212 is also partially provided in the circumferential surface of the active ratchet 21 itself, so that when the active ratchet 21 rotates from 0° to a preset angle, the limiting portion 41 will not abut against the axial stop edge 212, so that the active ratchet 21 can normally rotate unidirectionally relative to the driven ratchet 22. Due to the structural characteristics of the indexing angle of the active ratchet 21, when the active ratchet 21 rotates unidirectionally, it will produce an axial "reciprocating jump" along the active shaft 11 relative to the driven ratchet 22. However, when the active ratchet 21 rotates relatively to the preset angle, the limiting portion 41 in the base frame 4 will correspond to the axial stop edge 212 and abut against it along the active shaft 11, thereby stopping and locking the active ratchet 21, so that it can no longer "reciprocate jump" along the axial direction of the active shaft 11, so that the specific locking and fixing of the active ratchet 21 and the driven ratchet 22 can be achieved.

[0069] The preset angle of the ratchet assembly 2 can be specifically set to 90°. When the ratchet hinge rotates to a preset angle of 90°, the active shaft 11 and the driven shaft 12 can be locked and fixedly connected. Moreover, after the ratchet hinge subsequently rotates beyond the preset angle of 90°, the overall rotation of the ratchet hinge is achieved by the active shaft 11 and the driven shaft 12 jointly overcoming the internal resistance of the torsion gasket assembly 3.

[0070] The specific arrangement of the axial stop edge 212 has the beneficial effects of being simple in structure and being able to firmly lock and fix the driving shaft 11 and the driven shaft 12 after the ratchet assembly 2 rotates to a preset angle.

[0071] In one embodiment, the active ratchet 21 is also partially provided with an angle limit edge 213 in its own wheel circumference; when the active shaft 11 rotates to the limit angle, the limiting portion 41 is correspondingly blocked and abutted with the angle limit edge 213 along the circumference of the active ratchet 21 to limit the extreme rotation angle of the hinge shaft body 1.

[0072] Specific, combined Figure 1 and Figure 3 To further explain in detail, the active ratchet 21 is also partially provided with an angle limit edge 213 in its own wheel circumference. The angle limit edge 213 can be specifically set to have an angle difference of 90° with the axial stop edge 212. When the preset angle of the ratchet group 2 is specifically set to 90°, the limit angle of rotation of the active shaft 11 is 180°. In this way, when the screen is rotated to 180°, the limit portion 41 in the base frame 4 can be in contact with the angle limit edge 213 along the circumference of the active ratchet 21, so that the base frame 4 and the hinge shaft body 1 are completely stuck along the unidirectional rotation direction of the ratchet group 2, thereby effectively preventing the screen from being accidentally damaged by excessive opening.

[0073] The above-mentioned setting method of the angle limiting edge 213 has the beneficial effects of simple structure and being able to effectively prevent the screen from being damaged by excessive opening.

[0074] In one embodiment, the driving shaft 11 is further provided with a corrugated gasket 111 and a driving shaft gasket 112 between its own mounting shoulder and the driving ratchet 21 .

[0075] Specific, combined Figure 3 To further explain in detail, the above-mentioned corrugated gasket 111 can be specifically set to a wave ring shape, and the number of wave peaks of the corrugated gasket 111 can be set to be greater than three. The more wave peaks there are, the greater the elasticity of the corrugated gasket 111. The thickness of the corrugated gasket 111 can be increased or decreased according to the actual use situation, and the corrugated gasket 111 can be specifically made of 65Mn spring steel. In this way, when the active ratchet 21 rotates unidirectionally and "reciprocates" along the axial direction of the active shaft 11, the corrugated gasket 111 can be squeezed and deformed, and the elastic force is applied toward the active ratchet 21, ensuring that the active ratchet 21 is reset and pressed with the driven ratchet 22 faster.

[0076] The driving shaft gasket 112 can be used to support and install the corrugated gasket 111 to ensure the contact stability between the corrugated gasket 111 and the end surface of the active ratchet 21 of the active shaft 11 .

[0077] The specific arrangement of the corrugated gasket 111 and the movable shaft gasket 112 has the beneficial effects of simple structure and being able to improve the stability of the one-way rotation engagement of the ratchet assembly 2 .

[0078] In one embodiment, the driven ratchet 22 is further provided with an insertion boss 222 on the side facing away from the driven ratchet ring 221; a corresponding insertion groove 121 is provided in the shoulder of the driven shaft 12; the driven ratchet 22 is fixedly installed on the driven shaft 12 by fixing the insertion boss 222 in the insertion groove 121.

[0079] Specific, combined Figure 3 For further details, Figure 3 In the figure, the driven ratchet 22 is provided with an insertion boss 222 on the side facing away from the driven ratchet ring 221, and a corresponding insertion groove 121 is provided in the shoulder of the driven shaft 12, so that the driven ratchet 22 can be fixedly installed on the driven shaft 12 by fixing the insertion boss 222 in the insertion groove 121. In this way, the driven ratchet 22 is separated from the driven shaft 12, which is convenient for separate processing and preparation, and one of them can be replaced separately when it is damaged after long-term use.

[0080] Specific, combined Figure 5 For further details, Figure 5 In the embodiment, the driven ratchet 22 is integrally connected to the driven shaft 12, so that the two can be integrally formed and manufactured by machine tool turning, and the connection firmness and transmission stability of the two will be better.

[0081] The two connection modes between the driven ratchet 22 and the driven shaft 12 can be adapted, selected and adjusted according to the actual load scenario.

[0082] In one possible implementation manner, the docking portion of the active shaft 11 is protruding to form a plug connector, and the docking portion of the driven shaft 12 is recessed to form a receiving socket; a circular groove 113 is correspondingly provided in the peripheral wall of the plug connector; a circular through hole 122 is correspondingly provided in the peripheral wall of the driven shaft 12 corresponding to the receiving socket; a circular through hole 223 corresponding to the circular through hole 122 is provided in the circumferential surface of the driven ratchet 22; the active shaft 11 is inserted into the receiving socket through the plug connector, and is movably docked with the driven shaft 12 by correspondingly providing a connecting piece 13 in the circular groove 113 and the circular through hole 122.

[0083] Specific, combined Figure 3 and Figure 4 To further explain in detail, a circular groove 113 is correspondingly opened in the circumferential wall of the plug connector of the driving shaft 11, and a circular through hole 122 is correspondingly opened in the circumferential wall of the receiving socket formed by the driven shaft 12, and the plug connector is inserted into the receiving socket, and the driving shaft 11 and the driven shaft 12 can be movably connected by correspondingly arranging a connecting piece 13 in the circular groove 113 and the circular through hole 122. In this way, the axial connection and fixation of the driving shaft 11 and the driven shaft 12 can be ensured first, and the problem of axial separation of the driving shaft 11 and the driven shaft 12 can be avoided. Moreover, when the driving shaft 11 rotates relative to the driven shaft 12, the connecting piece 13 can slide relatively in the circular groove 113, so that the connecting piece 13 will not affect the circumferential active connection between the driving shaft 11 and the driven shaft 12.

[0084] The specific arrangement of the circular groove 113 , the circular through hole 122 and the connecting member 13 has the beneficial effects of simple structure and being able to achieve axial fixed connection and circumferential movable connection between the driving shaft 11 and the driven shaft 12 .

[0085] In one embodiment, the connecting member 13 is a connecting ball, and the connecting ball can pass through the round through hole 223 and be placed in the round through hole 122, and at least partially abut against the round groove 113;

[0086] Specific, combined Figure 4 For further details, Figure 4 Specifically, the connecting member 13 is configured as a connecting ball, and the connecting ball can pass through the round through hole 223 in the driven ratchet 22, and is placed in the round through hole 122 in the driven shaft 12, and partially abuts against the round groove 113 of the driving shaft 11.

[0087] In this way, when installing the connecting ball, a strong magnet can be used to first absorb and fix the connecting ball in the round through hole 223 in the driven ratchet 22, and the position can be as close as possible to the round through hole 122 in the driven shaft 12. Then, a special fixture is used to rotate a certain angle so that the round through hole 122 in the driven shaft 12 is exactly aligned with the round through hole 223 in the driven ratchet 22. In this way, the connecting ball can be inserted into the round through hole 122 in the driven shaft 12 in turn, and a pin is used to push the connecting ball downward so that it partially enters the round groove 113 abutting against the active shaft 11. Finally, the special fixture is used to reverse and reset and rotate. At this time, the connecting ball can be completely limited and installed on the active shaft 11 and the driven shaft 12.

[0088] The specific configuration of the connecting member 13 has the beneficial effects of being simple in structure and being able to stably limit the connection between the driving shaft 11 and the driven shaft 12 .

[0089] Alternatively, the connecting member 13 is a connecting nail, and the connecting nail can pass its nail rod through the round through hole 223 and at least partially extend into the round groove 113 .

[0090] Specific, combined Figure 6 For further details, Figure 6 Specifically, the connecting piece 13 is configured as a connecting nail, and the head of the connecting nail can be fixedly connected to the peripheral wall of the driven ratchet 22 by riveting or welding. The nail rod of the connecting nail passes through the circular through hole 223 and partially extends into the circular groove 113. In this way, the connection requirements of axially fixed connection and circumferentially movable connection of the driving shaft 11 and the driven shaft 12 can also be achieved.

[0091] The specific configuration of the connecting member 13 also has the beneficial effects of being simple in structure and being able to stably limit the connection between the driving shaft 11 and the driven shaft 12 .

[0092] In one embodiment, the base frame 4 further includes a sleeve portion 42 for sleeve-fitting with the driven shaft 12 ; the sleeve portion 42 is sleeved on the driven shaft 12 by cooperating with a friction stator 421 and a friction movable plate 422 .

[0093] Specific, combined Figure 2 Further detailed description, in order to improve the reliability and firmness of the installation of the base frame 4 and the driven shaft 12, the installation portion 42 can be specifically set as a special-shaped sleeve hole, and a sleeve shaft section with a shape matching the driven shaft 12 is correspondingly set, so that a firm installation connection between the base frame 4 and the driven shaft 12 can be achieved.

[0094] Moreover, the sleeve portion 42 is also connected to the torsion gasket assembly 3 in the driven shaft 12 through the friction stator 421 and the friction movable plate 422 respectively, so that the friction resistance between the driven shaft 12 and the torsion gasket assembly 3 can be increased, so that the driven shaft 12 can achieve any angle limit relative to the base frame 4.

[0095] The specific installation and setting method of the sleeve portion 42 has the beneficial effects of simple structure, being able to achieve a firm sleeve connection with the base frame 4, and achieving the rotation angle limitation of the driven shaft 12.

[0096] In one embodiment, the torsion washer assembly 3 includes a plurality of closely abutting disc-shaped washers 31 ; and an assembly deformation gap is provided between at least two adjacent disc-shaped washers 31 ; and a mounting frame 5 is also connected to one end of the driving shaft 11 away from the driven shaft 12 .

[0097] Specific, combined Figure 2 and Figure 6 To further explain in detail, the torsion gasket assembly 3 is specifically configured to be a plurality of closely abutting disc-shaped gaskets 31, and an assembly deformation gap can be formed between at least two adjacent disc-shaped gaskets 31, so that when the torsion gasket assembly 3 is subjected to torsion, the disc-shaped gaskets 31 can produce a certain friction torsional deformation, and correspondingly squeeze and fill in the assembly deformation gap, so that the torsion gasket assembly 3 can efficiently store or release the torsional potential energy when the driven shaft 12 rotates.

[0098] In addition, a mounting frame 5 is connected to one end of the driving shaft 11 away from the driven shaft 12, and corresponding structures such as rivet holes or screw holes can be opened in the mounting frame 5 for specific use in installing and connecting the screen.

[0099] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0100] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A ratchet hinge, characterized in that: include: The hinge shaft body (1) comprises a driving shaft (11) and a driven shaft (12) that are movably connected to each other; A ratchet assembly (2) sleeved on a movable joint between the driving shaft (11) and the driven shaft (12); A torsion washer assembly (3) sleeved on the driven shaft (12) and capable of storing or releasing torsional potential energy when the driven shaft (12) rotates; A base frame (4) is mounted and connected to the hinge shaft body (1) and has a limiting portion (41) for locking the ratchet assembly (2); Wherein, when the ratchet assembly (2) is relatively rotated to a preset angle, the limiting portion (41) corresponds to the stopper to lock the ratchet assembly (2); The ratchet assembly (2) comprises a driving ratchet (21) and a driven ratchet (22); The active ratchet (21) and the driven ratchet (22) are meshed with each other, and the active ratchet (21) can rotate unidirectionally relative to the driven ratchet (22) along with the active shaft (11); The active ratchet wheel (21) is also partially provided with an axial stop edge (212) on its own wheel circumference; When the ratchet assembly (2) rotates relatively to a preset angle, the limiting portion (41) abuts against the axial stopper (212) along the axial direction of the active shaft (11) to stop and lock the active ratchet (21) so that it no longer jumps axially relative to the driven ratchet (22).

2. The ratchet hinge according to claim 1, characterized in that: The active ratchet (21) is fixedly sleeved on the end portion of the active shaft (11) and the driven shaft (12) that are movably connected, and is provided with an active ratchet ring (211) facing the driven shaft (12); The driven ratchet (22) is fixedly sleeved on an end portion of the driven shaft (12) movably connected to the driving shaft (11), and is provided with a driven ratchet ring (221) facing the driving shaft (11).

3. The ratchet hinge according to claim 2, characterized in that: The active ratchet wheel (21) is also partially provided with an angle limiting edge (213) on its wheel circumference; When the active shaft (11) rotates to a limiting angle, the limiting portion (41) abuts against the angle limiting clamping edge (213) along the circumference of the active ratchet (21) to limit the extreme rotation angle of the hinge shaft body (1).

4. The ratchet hinge according to claim 2, characterized in that: The driving shaft (11) is also provided with a corrugated gasket (111) and a moving shaft gasket (112) between its own mounting shaft shoulder and the driving ratchet (21).

5. The ratchet hinge according to claim 2, characterized in that: The driven ratchet wheel (22) is further provided with an insertion boss (222) on a side facing away from the driven ratchet ring (221); An insertion groove (121) is correspondingly provided in the shoulder of the driven shaft (12); The driven ratchet (22) is fixedly mounted on the driven shaft (12) by means of the insertion boss (222) being fixedly inserted into the insertion groove (121); Alternatively, the driven ratchet (22) is integrally connected to the driven shaft (12).

6. The ratchet hinge according to claim 2, characterized in that: The butt joint of the driving shaft (11) is protruding to form a plug connector, and the butt joint of the driven shaft (12) is recessed to form a receiving socket; A circular groove (113) is correspondingly provided in the peripheral wall of the plug connector; The driven shaft (12) is provided with a circular through hole (122) in a peripheral wall corresponding to the receiving socket; A circular through hole (223) corresponding to the circular through hole (122) is provided in the circumferential surface of the driven ratchet wheel (22); The driving shaft (11) is inserted into the receiving hole via the plug connector, and is movably connected to the driven shaft (12) by means of connecting pieces (13) correspondingly arranged in the circular groove (113) and the circular through hole (122).

7. The ratchet hinge according to claim 6, characterized in that: The connecting member (13) is a connecting ball, and the connecting ball can pass through the round through hole (223) and be placed in the round through hole (122), and at least partially abut against the round groove (113); Alternatively, the connecting member (13) is a connecting pin, and the head of the connecting pin is riveted or welded to the peripheral wall of the driven ratchet (22), and the pin rod of the connecting pin passes through the circular through hole (223) and at least partially extends into the circular groove (113).

8. The ratchet hinge according to claim 1, characterized in that: The base frame (4) further comprises a sleeve portion (42) for sleeve fitting onto the driven shaft (12); The sleeve portion (42) is sleeved on the driven shaft (12) by cooperating with a friction stator (421) and a friction movable plate (422).

9. The ratchet hinge according to claim 1, characterized in that: The torsion gasket assembly (3) comprises a plurality of closely abutting disc-shaped gaskets (31); There is an assembly deformation gap between at least two adjacent disc-shaped gaskets (31); An end of the driving shaft (11) away from the driven shaft (12) is also connected to a mounting frame (5).

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