Random stop double-screen anti-vibration connecting structure and double-screen structure

Abstract

The application provides an arbitrary stop double-screen anti-vibration connecting structure and a double-screen structure, which comprises a rotating shaft, an upper rotating nut mechanism, a lower rotating nut mechanism and a transition gear piece; the rotating shaft is provided with the upper rotating nut mechanism and the lower rotating nut mechanism which are rotatably installed, and the rotating shaft is provided with the transition gear piece which is circumferentially and limitingly installed; the transition gear piece is installed between the upper rotating nut mechanism and the lower rotating nut mechanism; the lower rotating nut mechanism and the transition gear piece are engaged through a ring-shaped toothed belt, and the teeth on the ring-shaped toothed belt are inclined to one side. The application can keep the relative angle and position between the two screens almost unchanged under the condition of vibration and impact, improves the reliability of the double-screen use, and further eliminates the phenomenon of automatic closing in the vibration process of the previous double-screen structure.

Description

Technical Field

[0001] This invention relates to a connection structure between two screens, specifically, to an anti-vibration connection structure for two screens that can be stopped at any time and a two-screen structure. Background Technology

[0002] The common component for connecting dual screens is a hinge (or hinge plate), which enables the connection between the two screens and allows them to rotate. Among these, hinges with damping structures are frequently used, such as the utility model patent "Damping Hinge" (application number 201720518387.9, authorized announcement date 2017.12.15) and the invention patent "Arbitrary Stop Damping Hinge" (application number 202010372854.8, application publication date 2020.08.11). Existing damping plates in similar products rarely achieve arbitrary stopping. Even if arbitrary stopping is achieved, it is difficult to meet vibration resistance requirements, especially in environments with relatively harsh vibration conditions. Furthermore, it is difficult to achieve the following requirements: hinge miniaturization and variable damping (high damping during vibration to achieve relative stability of the dual-screen angle during vibration; relatively low damping during opening and closing for easy one-handed operation). Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide an arbitrary stop dual-screen vibration-resistant connection structure and a dual-screen structure.

[0004] The present invention provides an arbitrary stop dual-screen anti-vibration connection structure, comprising: a rotating shaft, an upper rotating nut mechanism, a lower rotating nut mechanism, and a transition gear;

[0005] The upper rotating nut mechanism and the lower rotating nut mechanism are rotatably mounted on the rotating shaft, and the transition gear is circumferentially limited and mounted on the rotating shaft;

[0006] The transition gear is installed between the upper rotating nut mechanism and the lower rotating nut mechanism. The lower rotating nut mechanism and the transition gear are engaged by an annular toothed belt with the teeth on the annular toothed belt tilted to one side.

[0007] Preferably, the rotating shaft includes: a top plane, a disk, a first threaded section, a middle plane, and a second threaded section;

[0008] The top plane is connected to one side of the disk, the other side of the disk is connected to one end of the first threaded segment, the other end of the first threaded segment is connected to one end of the middle plane, and the other end of the middle plane is connected to the second threaded segment.

[0009] The top plane, the first threaded segment, the middle plane, and the periphery of the second threaded segment are provided with planar structures, and the diameter of the disk is larger than that of the top plane and the first threaded segment.

[0010] Preferably, the transition tooth is mounted on the first threaded segment and allows axial movement along the first threaded segment. The inner wall of the transition tooth has a planar structure that matches the planar structure of the first threaded segment and restricts the transition tooth from rotating circumferentially relative to the first threaded segment.

[0011] Preferably, the lower rotating nut mechanism includes: a lower outer ring, a lower inner ring, a lower spring, and a lower washer;

[0012] The lower inner ring is threaded onto the first threaded section, and the lower outer ring is installed on the outer side of the lower inner ring. The planar structure on the outer side of the lower inner ring, in conjunction with the planar structure on the inner side of the lower outer ring, restricts the lower inner ring from rotating circumferentially relative to the lower outer ring.

[0013] The lower spring is installed between the lower inner ring and the lower outer ring. One end of the lower spring abuts against the lower inner ring, and the other end abuts against the lower washer. The lower washer is installed on the side of the lower inner ring facing the transition tooth.

[0014] Preferably, the transition toothed member has an annular toothed band on the side facing the lower rotating nut mechanism, the diameter of one end of the lower outer ring is smaller than that of the other end, and the smaller diameter end of the lower outer ring is close to the transition toothed member and has an annular toothed band that meshes with the annular toothed band of the transition toothed member.

[0015] The lower outer ring has a knurled finish at one end with a large diameter.

[0016] Preferably, a screw hole is provided at one end of the lower outer ring with a large diameter, and a set screw is installed in the screw hole, with one end of the set screw abutting against the planar structure of the lower inner ring.

[0017] Preferably, the upper rotating nut mechanism includes: an upper outer ring, an upper inner ring, and an upper spring;

[0018] The upper inner ring is threaded onto the first threaded section, and the upper outer ring is installed on the outer side of the upper inner ring. The planar structure on the outer side of the upper inner ring, together with the planar structure on the inner side of the upper outer ring, restricts the upper inner ring from rotating circumferentially relative to the upper outer ring.

[0019] The upper spring is installed between the upper inner ring and the upper outer ring. One end of the upper spring abuts against the upper inner ring, and the other end abuts against the upper washer. The upper washer is installed on the side of the upper inner ring facing the transition tooth.

[0020] Preferably, the diameter of one end of the upper outer ring is smaller than that of the other end, the larger diameter end of the upper outer ring is knurled, and the smaller diameter end of the upper outer ring is close to the transition tooth.

[0021] Preferably, the upper rotating nut mechanism is installed between the transition gear and the disk, and the lower rotating nut mechanism is installed on the side of the disk facing away from the transition gear.

[0022] A pin hole is provided on the top plane, and the fixed hinge is installed on the top plane by means of a pin engaging the pin hole.

[0023] Preferably, a dual-screen structure includes: a first frame and a second frame;

[0024] The second frame is fixedly connected to the fixed hinge;

[0025] The first frame is mounted on the central plane, and the end of the set screw facing away from the rotating shaft is embedded in the first frame to fix the lower rotating nut mechanism relative to the first frame.

[0026] A nut is installed on the side of the first frame facing away from the fixed hinge, and the nut is installed on the second threaded section.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. This application realizes a hard connection between two laptop screens, enabling normal use of the two screens in harsh environments, especially a dual-screen connection mechanism that can be used in high-vibration environments such as mobile vehicle environments.

[0029] 2. This application features reliable performance, small size, light weight, and excellent operability design;

[0030] 3. This application can maintain the relative angle and position between the two screens almost unchanged under vibration and impact conditions, which improves the reliability of dual-screen use and further eliminates the phenomenon of automatic closure during vibration of the previous dual-screen structure. Attached Figure Description

[0031] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0032] Figure 1 Exploded view of the vibration-resistant connection structure;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the vibration-resistant connection structure;

[0034] Figure 3 This is a schematic diagram for use with dual screens;

[0035] Figure 4 This is a three-dimensional structural diagram of the lower rotating nut mechanism;

[0036] Figure 5This is a sectional view of the lower rotating nut mechanism;

[0037] Figure 6 This is a schematic diagram of the rotating shaft structure;

[0038] As shown in the figure:

[0039] Detailed Implementation

[0040] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0041] Example 1

[0042] like Figure 1 and Figure 2 As shown, this embodiment includes: a rotating shaft 1, an upper rotating nut mechanism 4, a lower rotating nut mechanism 2, and a transition gear 3; the upper rotating nut mechanism 4 and the lower rotating nut mechanism 2 are rotatably mounted on the rotating shaft 1, and the transition gear 3 is circumferentially limited and mounted on the rotating shaft 1; the transition gear 3 is installed between the upper rotating nut mechanism 4 and the lower rotating nut mechanism 2, and the lower rotating nut mechanism 2 and the transition gear 3 are engaged by an annular toothed belt with the teeth on the annular toothed belt tilted to one side. The upper rotating nut mechanism 4 is installed between the transition gear 3 and the disc 12, and the lower rotating nut mechanism 2 is installed on the side of the disc 12 facing away from the transition gear 3; a pin hole is provided on the top plane 11, and the fixed hinge 7 is installed on the top plane 11 by a pin 6 engaging the pin hole.

[0043] The transition gear 3 is mounted on the first threaded section 13 and allows axial movement along the first threaded section 13. The inner wall of the transition gear 3 has a planar structure that matches the planar structure of the first threaded section 13 and restricts the transition gear 3 from rotating circumferentially relative to the first threaded section 13. The upper rotating nut mechanism 4 includes: an upper outer ring 41, an upper inner ring 42, and an upper spring 43. The upper inner ring 42 is threaded onto the first threaded section 13. The upper outer ring 41 is mounted on the outer side of the upper inner ring 42. The planar structure on the outer side of the upper inner ring 42, in conjunction with the planar structure on the inner side of the upper outer ring 41, restricts the upper inner ring 42 from rotating circumferentially relative to the upper outer ring 41. The upper spring 43 is installed between the upper inner ring 42 and the upper outer ring 41. One end of the upper spring 43 abuts against the upper inner ring 42, and the other end abuts against the upper washer. The upper washer is mounted on the side of the upper inner ring 42 facing the transition gear 3. The upper outer ring 41 has a smaller diameter at one end than at the other end. The larger diameter end of the upper outer ring 41 is knurled, and the smaller diameter end of the upper outer ring 41 is close to the transition gear 3.

[0044] like Figure 4 and 5 As shown, the lower rotating nut mechanism 2 includes: a lower outer ring 21, a lower inner ring 22, a lower spring 23, and a lower washer 24. The lower inner ring 22 is threaded onto the first threaded section 13. The lower outer ring 21 is installed on the outside of the lower inner ring 22. The planar structure on the outside of the lower inner ring 22, in conjunction with the planar structure on the inside of the lower outer ring 21, restricts the lower inner ring 22 from rotating circumferentially relative to the lower outer ring 21. The lower spring 23 is installed between the lower inner ring 22 and the lower outer ring 21. One end of the lower spring 23 abuts against the lower inner ring 22, and the other end abuts against the lower washer 24. The lower washer 24 is installed on the side of the lower inner ring 22 facing the transition gear 3. The transition gear 3 has an annular toothed band on the side facing the lower rotating nut mechanism 2. The diameter of one end of the lower outer ring 21 is smaller than that of the other end. The smaller diameter end of the lower outer ring 21 is close to the transition gear 3 and has an annular toothed band that meshes with the annular toothed band of the transition gear 3. The larger diameter end of the lower outer ring 21 is knurled. A screw hole is provided at the larger diameter end of the lower outer ring 21, and the set screw 25 is installed in the screw hole and is allowed to abut against the planar structure of the lower inner ring 22.

[0045] like Figure 6 As shown, the rotating shaft 1 includes: a top plane 11, a disk 12, a first threaded segment 13, a middle plane 14, and a second threaded segment 15; the top plane 11 is connected to one side of the disk 12, the other side of the disk 12 is connected to one end of the first threaded segment 13, the other end of the first threaded segment 13 is connected to one end of the middle plane 14, and the other end of the middle plane 14 is connected to the second threaded segment 15. The top plane 11, the first threaded segment 13, the middle plane 14, and the second threaded segment 15 are provided with planar structures around their peripheries, and the diameter of the disk 12 is larger than that of the top plane 11 and the first threaded segment 13.

[0046] like Figure 3 As shown, a dual-screen structure using this embodiment includes: a first frame 8 and a second frame 9; the second frame 9 is fixedly connected to a fixed hinge 7, the first frame 8 is installed on the middle plane 14, the set screw 25 is embedded in the first frame 8 at one end facing away from the rotating shaft 1 to realize that the lower rotating nut mechanism 2 is fixed relative to the first frame 8, and a nut 5 is installed on the side of the first frame 8 facing away from the fixed hinge 7, and the nut 5 is installed on the second threaded section 15.

[0047] Working principle:

[0048] In this embodiment, the "arbitrary stop" effect mainly applies to the dual-screen structure. Looking at a specific area, the two contact surfaces between the upper and lower contact teeth of the transition tooth 3 and the annular toothed belt form acute and right angles at the cross-sections at the tooth bottom, respectively. Because there is a right-angle contact surface on one side between the upper and lower teeth, this right-angle contact surface creates a step interference, causing the upper and lower teeth to rotate only unidirectionally in the direction of the acute-angle contact surface. The upper rotating nut mechanism 4 and the lower rotating nut mechanism 2 are internally designed with springs. When the upper and lower teeth rotate relative to each other along the acute angle, the upper spring 43 and the lower spring 23 are gradually compressed. As the upper rotating nut mechanism 4 and the lower rotating nut mechanism 2 rotate relative to each other, the friction force of the acute-angle contact surface between the teeth gradually increases. The upper and lower tooth structures can no longer rotate in the forward direction. In the reverse direction, the step effect at the right angle between the teeth also restricts the reverse rotation between the teeth, thus achieving a hard connection between the dual screens at "arbitrary angles," limiting the rotation between the dual screens during vibration, and solving the problem of automatic shielding closure under vibration conditions. Furthermore, when the upper and lower tooth structures rotate relative to each other along a right angle, there is a step height at the right angle contact position. When the two teeth need to separate, the pressure of the upper spring 43 on the transition tooth 3 should be released by rotating the upper rotating nut mechanism 4. Only after the upper and lower contact teeth of the transition tooth 3 and the annular toothed band are no longer interfered with by the step at the right angle contact surface can they rotate relative to each other along a right angle. Ultimately, this ensures that the screen opens smoothly, but requires manual unlocking when closing.

[0049] Example 2

[0050] Example 2 is a preferred example of Example 1.

[0051] like Figures 1 to 6 As shown, this embodiment includes: a rotating shaft 1, a lower rotating nut mechanism 2, a transition gear 3, an upper rotating nut mechanism 4, a nut 5, pins 6, and a fixed hinge 7. The fixed hinge 7 and the rotating shaft 1 are fixedly connected by two pins 6. The rotating shaft 1 is partially threaded. The upper rotating nut mechanism 4 has a knurled protrusion that facilitates rotation, which can increase (clockwise) or decrease (counterclockwise) the interaction force between the transition gear 3 and the transition gear 3, thereby ensuring the contact force between the teeth of the transition gear 3 and the lower rotating nut mechanism 2. The lower rotating nut mechanism 2 is fixed to the first frame 8 by a set screw 25, preventing the lower rotating nut mechanism 2 from rotating with the rotating shaft 1. A nut 5 is installed near the bottom of the rotating shaft 1, mainly for limiting or bearing weight.

[0052] The upper rotating nut mechanism 4 includes an upper outer ring 41, an upper inner ring 42, and an upper spring 43, all made of stainless steel. The upper outer ring 41 has a larger diameter at one end and a smaller diameter at the other, with the larger diameter end featuring knurling. The upper spring 43 is a compression spring. The upper spring 43, upper outer ring 41, upper inner ring 42, and upper washer are riveted together to form the upper rotating nut mechanism 4. The outer circle of the upper inner ring 42 has a planar structure, and the corresponding position of the inner circle of the upper outer ring 41 also has a planar structure. This ensures that when the upper rotating nut mechanism 4 rotates around the rotating shaft 1, the upper outer ring 41 and upper inner ring 42 rotate synchronously, with almost no relative rotation.

[0053] The rotating shaft 1 is made of stainless steel. The top area of ​​the rotating shaft 1 is designed with two planes (top plane 11) to facilitate riveting and installation with the fixed hinge 7. The disc 12 of the rotating shaft 1 mainly separates the fixed hinge 7 and the upper rotating nut mechanism 4 area, and can also limit the upper rotating nut mechanism 4. The lower area of ​​the rotating shaft 1 is also designed with two symmetrical planes, mainly to limit the relative rotation between the transition gear 3 and the rotating shaft 1, so that the two rotate synchronously.

[0054] The lower rotating nut mechanism 2 includes a lower outer ring 21, a lower inner ring 22, a lower spring 23, and a lower washer 24, all made of stainless steel. The lower outer ring 21 has a larger diameter at one end and a smaller diameter at the other. The larger diameter end is knurled and has a hole in the diametrical direction for mounting a set screw 25. The set screw 25 is mainly used in conjunction with the first frame 8 of the screen to limit the rotation of the lower rotating nut mechanism 2 and the rotating shaft 1; that is, when the rotating shaft 1 rotates, the lower rotating nut mechanism 2 remains stationary. The lower spring 23 is a compression spring. The lower outer ring 21, lower inner ring 22, lower spring 23, and lower washer 24 are riveted together to form the lower rotating nut mechanism 2. The lower inner ring 22 has a planar structure on its outer circle, and a corresponding planar structure on its inner circle, ensuring that the lower outer ring 21 and lower inner ring 22 rotate synchronously around the rotating shaft 1, with almost no relative rotation.

[0055] The main differences between the lower rotating nut mechanism 2 and the upper rotating nut mechanism 4 are as follows: First, the top of the small-diameter lower outer ring 21 is designed with a tooth structure corresponding to the transition tooth 3. The angle and height of this tooth structure have been optimized to ensure smooth screen opening, while requiring manual unlocking when the screen closes. Alternatively, the direction of the teeth can be changed to achieve the same smooth screen closing but manual unlocking when opening. Second, the mounting screw 25 limits the synchronous rotation of the rotating shaft 1 and the lower rotating nut mechanism 2.

[0056] The fixed hinge 7 is made of stainless steel. One side of the fixed hinge 7 has two pin holes, which are riveted to the top plane 11 of the pivot 1 by the pin 6. The other side of the fixed hinge 7 has four holes of different sizes, which are mainly used for positioning or installation.

[0057] The nut 5 is made of stainless steel. Its main function is to limit the first frame 8 so that the rotating shaft 1 does not deviate from the center, while minimizing the interaction force between the rotating shaft 1 and the first frame 8.

[0058] The transition gear 3 is made of stainless steel. The top of the small diameter transition gear 3 is designed with a tooth structure to cooperate with the teeth of the lower rotating nut mechanism 2. The large diameter part of the transition gear 3 facilitates manual intervention in the position of the transition gear 3. The inner ring part of the transition gear 3 is designed with a symmetrical planar structure to ensure the synchronous rotation of the transition gear 3 and the rotating shaft 1.

[0059] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An arbitrary stop dual screen anti-vibration connection structure, characterized by, include: Rotating shaft (1), upper rotating nut mechanism (4), lower rotating nut mechanism (2) and transition gear (3); The upper rotating nut mechanism (4) and the lower rotating nut mechanism (2) are rotatably mounted on the rotating shaft (1), and the transition gear (3) is circumferentially limited on the rotating shaft (1). The transition tooth (3) is installed between the upper rotating nut mechanism (4) and the lower rotating nut mechanism (2). The lower rotating nut mechanism (2) and the transition tooth (3) are engaged by an annular toothed belt with the teeth on the annular toothed belt tilted to one side. The rotating shaft (1) includes: a top plane (11), a disk (12), a first threaded section (13), a middle plane (14), and a second threaded section (15). The top plane (11) is connected to one side of the disk (12), the other side of the disk (12) is connected to one end of the first threaded segment (13), the other end of the first threaded segment (13) is connected to one end of the middle plane (14), and the other end of the middle plane (14) is connected to the second threaded segment (15). The top plane (11), the first threaded segment (13), the middle plane (14) and the second threaded segment (15) are provided with planar structures around their periphery, and the diameter of the disk (12) is larger than that of the top plane (11) and the first threaded segment (13). The lower rotating nut mechanism (2) includes: a lower outer ring (21), a lower inner ring (22), a lower spring (23), and a lower washer (24). The lower inner ring (22) is threaded onto the first threaded section (13), and the lower outer ring (21) is installed on the outside of the lower inner ring (22). The planar structure on the outside of the lower inner ring (22) cooperates with the planar structure on the inside of the lower outer ring (21) to restrict the lower inner ring (22) from rotating circumferentially relative to the lower outer ring (21). The lower spring (23) is installed between the lower inner ring (22) and the lower outer ring (21). One end of the lower spring (23) abuts against the lower inner ring (22), and the other end abuts against the lower washer (24). The lower washer (24) is installed on the side of the lower inner ring (22) facing the transition tooth (3). The transition tooth (3) is provided with an annular toothed belt on the side facing the lower rotating nut mechanism (2). The diameter of one end of the lower outer ring (21) is smaller than that of the other end. The smaller diameter end of the lower outer ring (21) is close to the transition tooth (3) and is provided with an annular toothed belt that meshes with the annular toothed belt of the transition tooth (3). The lower outer ring (21) has a knurled finish on one end with a large diameter.

2. The arbitrary stop dual-screen vibration-resistant connection structure according to claim 1, characterized in that, The transition tooth (3) is mounted on the first threaded section (13) and is allowed to move axially along the first threaded section (13). The inner wall of the transition tooth (3) is provided with a planar structure that is adapted to the planar structure of the first threaded section (13) and restricts the transition tooth (3) from rotating circumferentially relative to the first threaded section (13).

3. The arbitrary stop dual-screen vibration-resistant connection structure according to claim 1, characterized in that: The lower outer ring (21) has a screw hole at one end with a large diameter, and a set screw (25) is installed in the screw hole. One end of the set screw (25) abuts against the lower inner ring (22).

4. The arbitrary stop dual-screen vibration-resistant connection structure according to claim 1, characterized in that, The upper rotating nut mechanism (4) includes: an upper outer ring (41), an upper inner ring (42), and an upper spring (43). The upper inner ring (42) is threaded on the first threaded section (13), and the upper outer ring (41) is installed on the outside of the upper inner ring (42). The planar structure on the outside of the upper inner ring (42) cooperates with the planar structure on the inside of the upper outer ring (41) to restrict the upper inner ring (42) from rotating circumferentially relative to the upper outer ring (41). The upper spring (43) is installed between the upper inner ring (42) and the upper outer ring (41). One end of the upper spring (43) abuts against the upper inner ring (42), and the other end abuts against the upper washer. The upper washer is installed on the side of the upper inner ring (42) facing the transition tooth (3).

5. The arbitrary stop dual-screen vibration-resistant connection structure according to claim 4, characterized in that: The upper outer ring (41) has a smaller diameter at one end than at the other end. The upper outer ring (41) with a larger diameter end is knurled, and the upper outer ring (41) with a smaller diameter end is close to the transition tooth (3).

6. The arbitrary stop dual-screen vibration-resistant connection structure according to claim 3, characterized in that: The upper rotating nut mechanism (4) is installed between the transition tooth (3) and the disk (12), and the lower rotating nut mechanism (2) is installed on the side of the disk (12) facing away from the transition tooth (3); A pin hole is provided on the top plane (11), and the fixed hinge (7) is installed on the top plane (11) by means of a pin (6) cooperating with the pin hole.

7. A dual-screen structure, characterized in that, The arbitrary stop dual-screen anti-vibration connection structure as described in claim 6 includes: a first frame (8) and a second frame (9). The second frame (9) is fixedly connected to the fixed hinge (7), the first frame (8) is installed on the middle plane (14), and the set screw (25) is embedded in the first frame (8) at the end facing away from the rotating shaft (1) to realize that the lower rotating nut mechanism (2) is fixed relative to the first frame (8); The first frame (8) has a nut (5) installed on the side opposite to the fixed hinge (7), and the nut (5) is installed on the second threaded section (15).

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