A high-angle rotating shaft limiting mechanism

Abstract

This utility model discloses a high-angle hinge limiting mechanism, belonging to the field of laptop hinge technology. It includes a mounting sleeve for mounting onto the laptop body, with a mounting rod inside the sleeve, and a limiting groove on the half-gear. This addresses the drawback of existing damping limiting mechanisms where the display screen easily rotates due to its own weight generating a rotational torque exceeding the damping force when used at large angles. This mechanism has several sets of limiting grooves on the upper right side of the half-gear. When the display screen is opened to a large angle range of 130-160 degrees, the limiting rod can engage with the limiting groove to achieve complete locking. At this point, even if the display screen's own weight generates a large rotational torque, it cannot push the half-gear to continue rotating, fundamentally solving the problem of the display screen rotating on its own when used at large angles. This provides stable support for scenarios such as watching movies, multi-person presentations, and standing office work, avoiding the risk of equipment collision damage.

Description

Technical Field

[0001] This utility model relates to a high-angle hinge limiting mechanism, belonging to the field of notebook computer hinge technology. Background Technology

[0002] With the widespread adoption of mobile work and digital entertainment, laptops have become indispensable electronic devices in people's work and life. Among these components, the hinge connecting the display to the host is a key element, and its limiting performance directly impacts the user experience. Currently, mainstream laptop hinges on the market are based on a friction-damped stepless limiting structure, using friction pads inside the hinge to generate resistance and fix the angle. However, this structure has significant drawbacks. On the one hand, after prolonged use, the friction pads wear down, causing the damping force to gradually decrease, thus reducing the limiting reliability. On the other hand, in scenarios involving large angles, such as when the display opens to more than 100 degrees, the display's own weight generates a large rotational torque. When this torque exceeds the reduced damping force due to wear, the display will continue to rotate under its own weight, failing to maintain the user-set angle. This not only disrupts the user experience but may also cause the screen to collide with the host due to sudden angle changes, resulting in device damage. This makes it difficult to meet the diverse needs of users in scenarios such as office work, watching movies, and presentations. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a high-angle pivot limiting mechanism, which can accurately divide the angle range of a laptop screen while taking into account both adjustment flexibility and limiting stability.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a high-angle pivot limiting mechanism, characterized in that it includes: a mounting sleeve, which is used to install onto the main body of a laptop computer, and a mounting rod is provided inside the mounting sleeve. One end of the mounting rod is rotatably connected to a mounting box for connecting the laptop computer flip cover via a bearing, and a half gear is fixed to one end of the mounting rod that passes through the inside of the mounting box. A limiting groove is also provided on the half gear. A limiting rod is vertically provided inside the mounting box, and a movable plate is fixed to the top of the limiting rod. A spring is sleeved on the limiting rod, and the two ends of the spring are respectively connected to the inner wall of the mounting box and the movable plate.

[0005] Preferably, the mounting box has an internal cavity, the half gear is located in the cavity, a through hole is provided above the cavity, and the limiting rod is located in the through hole.

[0006] Preferably, the limiting groove is provided in several groups and is distributed on the upper right side of the half gear.

[0007] Preferably, the half gear is fixed to the mounting rod by bolts.

[0008] Preferably, the side of the mounting box is provided with a sliding groove, and a sliding strip is provided in the sliding groove, the sliding strip being connected to the movable plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Existing damping limiting mechanisms suffer from the defect that the display screen can easily rotate on its own when used at large angles due to the rotational torque generated by its own weight exceeding the damping force. This mechanism has several sets of limiting slots on the upper right side of the half gear. When the display screen is opened to a large angle range of 130-160 degrees, the limiting rod can be locked into the limiting slot to achieve complete locking. At this time, even if the display screen itself generates a large rotational torque, it cannot drive the half gear to continue to rotate. This fundamentally solves the problem of the display screen rotating on its own when used at large angles, providing stable support for scenarios such as movie watching, multi-person presentations, and standing office work, and avoiding the risk of equipment collision damage. This mechanism utilizes a combination of a half-gear, a limiting rod, and a spring to achieve multi-segment limiting within the low to medium angle range of 30-120 degrees for laptop screens. When the screen is open, the limiting rod engages with the teeth or inter-teeth of the half-gear under the spring force. Users only need to apply a moderate pushing force to overcome the spring force to push the limiting rod out of its current engagement position, achieving flexible angle adjustment. When adjusting within the low to medium angle range, users do not need to operate any complex components; simply pushing the screen to apply force is sufficient to switch angles, conforming to intuitive operating habits in daily use. When locking or unlocking at large angles, simply pushing the slider in the sliding groove on the side of the mounting box allows the limiting rod to be pulled out and reset from the limiting groove. The operation steps are simple, meeting the needs for flexible angle adjustment in daily office work, typing, and other scenarios while ensuring the reliability of the limiting mechanism. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0011] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a cross-sectional view of the mounting box of this utility model; Figure 3 This is a side view sectional structural diagram of the present invention.

[0012] In the diagram: 1. Rotary sleeve, 2. Rotary shaft, 3. Mounting box, 4. Half gear, 5. Limiting groove, 6. Limiting rod, 7. Movable plate, 8. Spring, 9. Slide bar. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-3 This utility model provides a technical solution: A high-angle pivot limiting mechanism includes: a mounting sleeve 1 for mounting onto a laptop computer body, and a mounting rod 2 inside the mounting sleeve 1. One end of the mounting rod 2 is rotatably connected to a mounting box 3 for connecting a laptop computer flip cover via a bearing. A half gear 4 is fixed to one end of the mounting rod 2 that passes through the interior of the mounting box 3. A limiting groove 5 is also provided on the half gear 4. A limiting rod 6 is vertically arranged inside the mounting box 3. A movable plate 7 is fixed to the top of the limiting rod 6. A spring 8 is sleeved on the limiting rod 6, and the two ends of the spring 8 are respectively connected to the inner wall of the mounting box 3 and the movable plate 7.

[0015] Furthermore, when the laptop lid is opened, the mounting box 3 drives the limiting rod 6 to rotate around the fixed half gear 4. Under the action of the spring 8, the limiting rod 6 engages with the teeth or inter-teeth area of ​​the half gear 4 in real time, forming a multi-stage limiting. When the user needs to adjust the angle, he only needs to apply a moderate pushing force to push the lid open. The pushing force drives the mounting box 3 to overcome the spring 8, causing the limiting rod 6 to disengage from its current engagement position with the half gear 4. The mounting box 3 can continue to rotate, achieving flexible adjustment of medium and low angles.

[0016] When the flip cover rotates the mounting box 3 and the limiting rod 6 to the 130-160 degree range, the limiting rod 6 will be precisely engaged in the preset limiting groove 5 on the fixed half gear 4 under the elastic force of the spring 8, achieving complete locking. At this time, even if the weight of the display screen itself generates a large rotational torque, the mounting box 3 cannot continue to rotate due to the engagement of the limiting rod 6 and the limiting groove 5, thus ensuring that the display screen is stably maintained at the set angle and avoiding self-rotation or collision damage.

[0017] In this embodiment: the mounting box 3 has a cavity inside, the half gear 4 is located in the cavity, a through hole is provided above the cavity, and the limiting rod 6 is located in the through hole.

[0018] Furthermore, the cavity inside the mounting box 3 provides space for the fixed half gear 4, while also allowing sufficient range of motion for the mounting box 3 to rotate around the half gear 4, preventing interference between the mounting box 3 and the half gear 4 when rotating. The cavity also prevents external impurities from contacting the mating part between the half gear 4 and the limiting rod 6, reducing component wear. The through hole above the cavity is adapted to the limiting rod 6, providing a guide path for the vertical movement of the limiting rod 6, ensuring that the limiting rod 6 can only move up and down along the through hole.

[0019] In this embodiment: the limiting groove 5 is provided in several sets, and it is distributed on the upper right side of the half gear 4.

[0020] Furthermore, several sets of limiting slots 5 are centrally located on the upper right side of the fixed half gear 4, precisely corresponding to the 130-160 degree wide-angle usage range of the laptop screen. These multiple sets of limiting slots 5 enable precise multi-angle limiting within a wide angle range, allowing users to adjust the screen to different wide-angle positions according to their needs, such as watching movies, multi-person presentations, or standing work.

[0021] In this embodiment: the half gear 4 is fixed to the mounting rod 2 by bolts.

[0022] Furthermore, the half gear 4 is fixed to the mounting rod 2 by bolts. The bolt connection ensures that there is no relative rotation between the half gear 4 and the mounting rod 2, thereby keeping the half gear 4 in a fixed state.

[0023] In this embodiment: a sliding groove is provided on the side of the mounting box 3, and a sliding strip 9 is provided in the sliding groove, which is connected to the movable plate 7.

[0024] Furthermore, the slide bar 9 in the side groove of the mounting box 3 is rigidly connected to the movable plate 7, forming an "unlock-lock" control component for large-angle range limiting. When it is necessary to unlock the large-angle limit, the user pushes the slide bar 9 along the groove. The slide bar 9 drives the movable plate 7 to move upward. The movable plate 7 compresses the spring 8 and simultaneously drives the limit rod 6 to move upward, so that the limit rod 6 is pulled out from the limit groove 5 of the fixed half gear 4, releasing the locked state.

[0025] The workflow of this embodiment is as follows: The mounting sleeve 1 is rigidly fixed to the main body of the laptop computer using bolts or clips, making the mounting sleeve 1 the fixed reference of the entire mechanism; at the same time, the mounting box 3 is rigidly connected to the side of the laptop flip screen to ensure that the mounting box 3 can move synchronously when the flip screen is rotated; one end of the mounting rod 2 is rotatably connected to the mounting box 3 through a bearing; depending on the usage angle of the laptop screen, there are two working modes: "flexible adjustment in the low-to-medium angle range of 30-120 degrees" and "stable locking in the large angle range of 130-160 degrees". When adjusting the angle within the low-to-medium angle range of 30-120 degrees, when the user flips the laptop lid, the lid causes the mounting box 3 to rotate around the fixed mounting rod 2 and half gear 4. At this time, the spring 8 is in a naturally extended or slightly compressed state, and its elastic force is transmitted to the limiting rod 6 through the movable plate 7, so that the limiting rod 6 always has a downward tendency to move, and its bottom is in close contact with the teeth or inter-teeth area of ​​the fixed half gear 4. When the user needs to adjust the angle, he only needs to apply a moderate pushing force to the lid. This pushing force is transmitted to the movable plate 7 and the limiting rod 6 through the mounting box 3, overcoming the elastic force of the spring 8, and causing the limiting rod 6 to move along the mounting box 4. The through hole of the mounting box 3 moves upward, disengaging from its current engagement position with the teeth of the half gear 4. As the mounting box 3 continues to rotate, the limiting rod 6, under the action of the spring 8, will re-engage with the next tooth of the half gear 4 in real time. When the user stops applying the pushing force, the limiting rod 6, under the action of the spring 8, will stably lock into the current tooth space or tooth side of the half gear 4, limiting the rotation of the mounting box 3 through mechanical engagement, thereby fixing the display screen at the target angle. This process can achieve multi-segment precise positioning within the range of 30-120 degrees, and the adjustment requires no additional operation, conforming to the intuitive habits of daily use. When adjusting within the large angle range of 130-160 degrees, if the user continues to push the flip cover, causing the mounting box 3 to rotate the limiting rod 6 around the fixed half gear 4 to the 130-160 degree range, the limiting rod 6 will move to the upper right of the pre-set limiting groove 5 of the half gear 4. Since the limiting groove 5 is a concave structure and the spring 8 always provides downward elastic force, the limiting rod 6 will automatically engage with the limiting groove 5, forming a rigid mechanical lock. At this point, even if the display screen itself generates a large rotational torque, because the engagement depth between the limiting rod 6 and the limiting groove 5 is greater than the tooth height of the half gear 4, the torque cannot push the limiting rod 6 out of the limiting groove 5. The mounting box 3 cannot continue to rotate, and the display screen can stably maintain the set angle, thus achieving a stable viewing angle. This design avoids the "self-rotation" problem caused by the decrease in damping force of traditional damping hinges, and also prevents damage to the screen and host from collisions. When the user needs to adjust from a large angle range to other angles, they only need to push the slider 9 in the slide groove on the side of the mounting box 3. The slider 9 is rigidly connected to the movable plate 7. When the slider 9 is pushed to slide upward along the slide groove, it will drive the movable plate 7 to compress the spring 8, and at the same time pull the limit rod 6 to move upward along the through hole, disengage from the limit groove 5, and release the locked state. At this time, the user can freely push the flip cover to adjust the display screen to a medium-low angle or other large angle positions. After releasing the slider 9, the spring 8 resets and pushes the movable plate 7 and the slider 9 back to the initial position, and the limit rod 6 re-enters the "follow-up cooperation" state.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-angle rotating shaft limiting mechanism, characterized in that, include: The mounting sleeve is used to install onto the main body of a laptop computer. An mounting rod is fixed inside the mounting sleeve. One end of the mounting rod is rotatably connected to a mounting box for connecting the laptop computer flip cover via a bearing. A half gear is fixed to one end of the mounting rod that passes through the inside of the mounting box. A limit groove is also provided on the half gear. A limit rod is vertically arranged inside the mounting box. A movable plate is fixed to the top of the limit rod. A spring is sleeved on the limit rod, and the two ends of the spring are respectively connected to the inner wall of the mounting box and the movable plate.

2. The high-angle rotating shaft limiting mechanism according to claim 1, characterized in that, The mounting box has an internal cavity, the half gear is located in the cavity, a through hole is provided above the cavity, and the limiting rod is located in the through hole.

3. The high-angle rotating shaft limiting mechanism according to claim 1, characterized in that, The limiting groove is provided in several groups and is distributed on the upper right side of the half gear.

4. The high-angle rotating shaft limiting mechanism according to claim 1, characterized in that, The half gear is fixed to the mounting rod by bolts.

5. A high-angle rotating shaft limiting mechanism according to claim 1, characterized in that, The mounting box has a sliding groove on its side, and a sliding strip is provided in the sliding groove. The sliding strip is connected to the movable plate.

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