A key aid

Abstract

The key auxiliary device provided by the embodiment of the present specification comprises a handle body, a handle, an adjusting handle, an adjusting device and a clamping device; the clamping device is arranged at one end of the handle body; the handle is further arranged on the handle body and is arranged along the length direction of the handle body, and when a user holds the handle body, the handle is located at the outside of the back of the user's hand; the clamping device comprises an upper clamping plate and a lower clamping plate, and the adjusting device for adjusting the spacing between the upper clamping plate and the lower clamping plate is arranged on the clamping device; one end of the adjusting handle is detachably arranged on the handle, and the other end is fixedly arranged on the clamping device through the adjusting device. The present application is suitable for people with injured hands, people with less strength, people in cold or high-temperature environments and people who need to use self-reset keys, and can significantly reduce the difficulty of unlocking and improve the safety of unlocking.

Description

Technical Field

[0001] This invention relates to the field of assistive device technology, and more particularly to a key assistive device. Background Technology

[0002] With the continuous advancement of technology, our quality of life has significantly improved, and people's demands for daily life have also increased accordingly. However, for certain groups, such as those with hand injuries, those with limited strength, those living in cold or hot environments, and those who need to use locks with self-resetting keys, unlocking locks can become exceptionally difficult. Therefore, designing an assistive device that can effectively help these groups unlock locks more easily has significant practical implications. Summary of the Invention

[0003] To overcome the problems existing in the related technologies, this disclosure provides a key aid to solve the technical problem of the lack of portable and lock-unlocking aids in the related technologies.

[0004] This specification provides one or more embodiments of a key aid, including a handle body, a handle, an adjusting handle, an adjusting device, and a clamping device; A clamping device is located at one end of the handle; The handle is also set along the length of the handle body, and when the user grasps the handle body, the handle is located on the outside of the user's hand. The clamping device includes an upper clamping plate and a lower clamping plate, and the clamping device is provided with an adjustment device for the distance between the upper clamping plate and the lower clamping plate; One end of the adjusting handle is detachably mounted on the handle, and the other end is fixedly mounted on the clamping device via an adjusting mechanism.

[0005] Furthermore, the end of the handle is provided with a mounting base that is hinged to the clamping device, and the end of the mounting base is provided with an upward-facing bearing seat. The clamping device is rotatably connected to the bearing seat via a connecting shaft.

[0006] Furthermore, it also includes a seat lock device, which includes a push rod, a push rod, a spring, and a damper; The end of the button push rod is set with serrations, and multiple slide rails are set on the cylindrical surface along the reasoning direction; One end of the push rod is inserted into the button push rod. The cylindrical surface of its end is provided with cam teeth that mesh with the saw teeth of the button push rod. Pushing the button push rod through the meshing saw teeth and cam teeth converts the motion of the push rod into rotation. The other end of the push rod is connected to a spring, and the spring pushes the end of the damper towards the clamping device. The handle is a hollow rod, and the inner surface of the handle is provided with a ring-shaped guide structure, including a ring-shaped guide groove, a deep groove and a shallow groove arranged at intervals to adapt to multiple slide rails so that the button push rod can slide back and forth in the handle and to limit the position of the cam teeth.

[0007] Furthermore, one end of the adjustment handle is provided with a screw hole, and the adjustment handle is fixedly connected to the handle by a fastener.

[0008] Furthermore, the radius of curvature of the handle is set to 45° to 55°. Furthermore, the handle is made of a flexible, soft material.

[0009] Furthermore, the part of the body used for the user's hands to grip is provided with an anti-slip rubber ring.

[0010] Furthermore, the adjusting device and the fixing component can be a bolt and nut structure.

[0011] Furthermore, the key assist device has a built-in GPS chip.

[0012] Furthermore, the key aid has a built-in wireless communication module that wirelessly connects to the mobile device.

[0013] This disclosure provides a key assist device with the advantage of forming a lever structure through a handle, grip, clamping device, and an adjustable handle connecting the handle and clamping device. Based on the lever principle, when the user rotates the handle, the entire lever structure rotates the key with greater force, making key rotation easier and reducing the hand strength required for unlocking or locking. The clamping device, adjusted according to the key's shape and size, secures the key to a suitable position on the clamping plate, ensuring it is firmly fixed and preventing accidental slippage or drop during operation. Furthermore, the adjustable handle not only transfers hand strength to the clamping device during unlocking but also ensures a stable clamping mechanism. The adjustable handle also adjusts the tightness of the adjusting device, making the entire key assist device simple in structure and easy to use. It is suitable for people with hand injuries, those with limited strength, those in cold or hot environments, and those who need to use self-resetting keys. This assist device significantly reduces the difficulty of unlocking and improves the accuracy and security of unlocking.

[0014] This device is simple and easy to use; users simply insert the key and twist to unlock. Furthermore, its small size, light weight, and portability make it suitable for use anytime, anywhere, bringing great convenience to people. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in one or more embodiments of this specification or in 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 recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a key aid provided in one or more embodiments of this specification; Figure 2 This is a schematic diagram of the unlocking end of a key aid provided in one or more embodiments of this specification; Figure 3 A cross-sectional view along the length of the handle of a key aid provided in one or more embodiments of this specification; Figure 4 A diagram of a seat lock device provided for one or more embodiments of this specification. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this invention.

[0018] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0019] According to an embodiment of the present invention, a key aid is provided, such as Figure 1 The diagram shown is a structural diagram of the key aid provided in this embodiment. According to this embodiment of the invention, the key aid includes: The handle body 1 has a clamping device 11 at one end for clamping the key.

[0020] A handle 4 is also provided on the handle body 1. The handle 4 is set along the length of the handle body 1. When the user grips the handle body, the handle 4 is located on the outside of the back of the user's hand. (See reference) Figure 1 As shown, for example, the handle 4 is arranged along the length of the handle body 1 and parallel to the clamping device 11.

[0021] The clamping device 11 includes an upper clamping plate and a lower clamping plate, and the upper and lower clamping plates are provided with an adjustment device 7 for adjusting the distance between the upper and lower clamping plates. The clamping device 11 can adjust the distance between the upper and lower clamping plates so that the clamping device 11 can be adapted to keys of various specifications and thicknesses.

[0022] It also includes an adjustment handle 5, one end of which is detachably mounted on the handle 4, and the other end is fixedly mounted on the clamping device 11 via the adjustment device 7.

[0023] The key assist device provided in this embodiment allows the key to be inserted into the clamping device 11. The end of the adjusting handle 5 connected to the handle 4 is initially in a disengaged state. The adjusting device 7 adjusts the clamping device 11 to clamp the key by adjusting the handle 5, and then fixes one end of the adjusting handle 5 onto the handle 4. After the user puts their hand through the handle 4 and holds the handle body 1, the key assist device controls the key to insert the key into the keyhole and unlocks or locks the key by controlling the wrist.

[0024] In this embodiment, the end of the adjusting handle 5 connected to the handle 4 is provided with a screw hole, and the adjusting handle 5 is fixedly connected to the handle 4 by the fixing member 6, wherein the fixing member 6 can be a bolt and nut structure.

[0025] In one embodiment, the adjusting device 7 is also a bolt and nut structure, forming an adaptive locking structure with the adjusting handle 5. The clamping device 11 can be adapted to more specifications or thicknesses of keys by adjusting the tightness of the adjusting device 7 through the adjusting handle 5.

[0026] The key assist device provided in this embodiment forms a lever structure through the handle body 1, handle 4, clamping device 11, and adjusting handle 5 connecting handle 4 and clamping device 11. According to the lever principle, when the length of the lever arm increases, the force applied to the lever also increases accordingly. By setting the position of handle 4 as far away from the lock as possible, the length of the lever arm is increased. When the user rotates handle 1, the entire lever structure pushes the key with greater force, making it easier to push the key. This reduces the hand force required during unlocking or locking. The clamping device 11 can be set according to the shape and size of the key to fix the key in a suitable position on the clamping plate through adjusting device 7, ensuring that the key can be well fixed on clamping device 11 and preventing the key from accidentally sliding or falling during operation. At the same time, by adjusting handle 5 to connect handle 4, not only can the hand force during unlocking be transferred to clamping device 11, but the clamping device 11 is also stabilized when unlocking. In addition, adjusting handle 5 can also adjust the tightness of adjusting device 7, making the entire key assist device simple in structure and convenient to use.

[0027] In this embodiment, to facilitate replacement when the clamping device 11 is damaged, a mounting base 10 is provided at the end of the body 1, which is hinged to the clamping device 11. (See reference...) Figure 2The diagram shows the structure of the key aid unlocking end provided in this embodiment. A shaft seat is provided at the upward-facing end of the mounting base 10. The clamping device 11 is rotatably connected to the shaft seat via a connecting shaft. The clamping device 11 can be clamped in the middle of the mounting base 10, or it can be configured to clamp the mounting base 10. The specific structure is not limited as long as the clamping device 11 can rotate up and down on the mounting base 10. Since the clamping device 11 is connected to the handle 4 via the adjusting handle 5, it will not rotate arbitrarily up and down due to external force during use. This design not only increases the convenience of operation but also provides users with a more accurate and reliable user experience.

[0028] To ensure the clamping device 11 is more stable during unlocking and to prevent it from rotating freely due to the hinge between the clamping device 11 and the mounting base 10, refer to... Figure 3-4 The figures shown are cross-sectional views of the key aid provided in this embodiment along the length of the handle body 1 and a seat lock device provided in this embodiment for fixing the clamping device 11 and increasing the stability of the clamping device 11. The seat lock device includes a button push rod 3, a push rod 2, a spring 8 and a damper 9 arranged sequentially in the handle body 1. The end of the button push rod 3 is set with a sawtooth 31, and multiple slide rails 32 are set on the cylindrical surface along the reasoning direction; One end of the push rod 2 is inserted into the button push rod 3. Its cylindrical end surface is provided with a cam tooth 21 that meshes with the saw tooth 31 in the button push rod 3. When the button push rod 3 is pushed, the motion of the push rod 2 is converted into rotational operation through the meshing saw tooth 31 and cam tooth 21. The handlebar 1 is a hollow rod, and the inner surface of the handlebar 1 is provided with a guide structure 101 in an annular shape, including an annular guide groove that is adapted to multiple slide rails 32 so that the button push rod 3 can slide back and forth in the handlebar 1. It is also provided with deep grooves and shallow grooves arranged at intervals to limit the position of the cam teeth 21.

[0029] The end of the push rod 2, away from the button push rod 3, pushes the damper 9 towards the clamping device 11 via a connected spring 8. Under the push of the button push rod 3, the force transmission compresses the spring 8, causing the damper 9 to move forward, increasing the friction between the damper 9 and the clamping device 11. The damper 9 is used to absorb the vibration and impact of the key during rotation, thereby preventing excessive movement or jumping of the key. The damper 9 is made of elastic material, which can generate a certain frictional resistance during key rotation. This frictional resistance can effectively suppress excessive movement or jumping of the key, making the use of the key more stable and smooth.

[0030] During use, pressing the button push rod 3 pushes the push rod 2, causing it to slide within the handle body 1. As the button push rod 3 pushes forward, the serration 31 and cam tooth 21 partially contact each other, and the cam tooth 21 disengages from the limiting deep or shallow groove. Continuing to press the button push rod 3 causes the cam tooth to slide into the serration, producing the first click. When the button push rod 3 is released, the spring 8 pushes the push rod 2, causing the cam tooth 21 to contact the edge of the serration 31, resulting in increased rotation. Once the cam tooth 21 disengages from the edge of the serration 31, it slides again, producing a second click. At this point, the push rod 2 is locked, and the damper 9 engages the clamping device 11. The friction and inertia enhance the key's positional stability and operational feel. Similarly, to unlock, simply repeat the above actions.

[0031] In a preferred embodiment, the curvature of the handle 4 is set to 45° to 55°. This curvature is ergonomic for both adults and children, allowing the handle 4 to fit more closely to the back of the hand.

[0032] In a preferred embodiment, a non-slip rubber ring is provided on the part of the body 1 for the user to grip.

[0033] In this embodiment, the handle 4 is made of a flexible soft material. The purpose of this structure is that, firstly, the flexible soft material allows the key aid to be used by all people. When the user is an adult, the gap between the handle 4 and the back of the hand is smaller, so during the unlocking process, the lever structure formed by the handle 4, the adjusting handle 5, and the clamping device 11 can transfer the unlocking force to the arm. If the user is a child, the gap between the handle 4 and the back of the hand is larger. This is to better maximize the pulling force between the adjusting handle 5 and the handle 4. The child can put their hand into the handle 4 and shift their hand as far as possible toward the pressing end so that the handle 4 maximizes the pulling force between the adjusting handle 5 and the clamping device 11, ensuring the stability of the clamping device 11 during the unlocking process.

[0034] In this embodiment, the designer utilizes the lever principle, allowing the user to push the key, thus achieving easier operation. This device mainly includes a lever and a fulcrum. The fulcrum is located at the position of the fixing member 6. One end of the adjusting handle 5 is adjustablely connected to the fulcrum, while the other end is used to push the key. The user can position the fulcrum above or below the lock as needed.

[0035] According to the lever principle, when the position of the fulcrum is changed, increasing the length of the lever arm, the force applied to the lever will also increase accordingly. Thus, when the user turns the lever, it will turn the key with greater force, making it easier to turn the key.

[0036] Using the body 1, handle 4, mounting base 10, and clamping device 11 as a lever structure, the factors affecting the position setting of the fulcrum in this embodiment include the length of the lever structure, the materials of the handle 4, mounting base 10, and clamping device 11, the bending stress, shear stress, and torque of the handle 4, mounting base 10, and clamping device 11 as a whole when unlocking and rotating, etc., will all affect the setting of the fulcrum position. The specific analysis is as follows.

[0037] Using the body 1, handle 4, mounting base 10, and clamping device 11 as a lever structure, to reduce the power required for unlocking, the lever structure needs to be designed according to the load requirements, including the fulcrum position, dimensions, and material. After determining the fulcrum position, dimensions, and material, the lever structure needs to be analyzed for strength and stability. That is, based on the designed lever dimensions and load requirements, the bending stress, shear stress, and torque of the lever are calculated. If the lever structure is made of aluminum alloy, the specific dimension design method is as follows: assuming the lever cross-section is rectangular with length L, width W, and height H, then the following formula applies: Cross-sectional area of ​​the lever: A = L × W; Lever section modulus: Wc=π×(sqrt(L / π)×sqrt(W / π)) ³; For example, given that the total length of the lever structure is L = 30cm = 300mm and the width is W = 2cm = 20mm, then the cross-sectional area of ​​the lever is: A = L × W = 300 × 20 = 6000 mm²; The section modulus of the lever is: Wc=π×(sqrt(L / π)×sqrt(W / π))≈177mm³; The bending and torsional strength of the lever structure can be calculated based on the section modulus, or the maximum stress parameter on the section can be calculated under a given bending moment or torque condition. Finally, the position of the fulcrum can be determined based on the bending strength, torsional strength, maximum stress and other parameters of the lever structure. When designing the fulcrum, first determine that the fulcrum should be located at the corresponding position on the handle 1 of the key aid. Based on the corresponding position on the handle, the fulcrum is vertically mapped onto the handle 4 to determine the position set by the fixing part 6, thereby determining the position of the fulcrum.

[0038] For example, the dimensions of the body 1 are 20×150mm, the length of the entire lever structure is 300mm, and the fulcrum is 50mm away from one end of the body 1. This design can provide a suitable operating angle, making it easier for users to operate the key aid. Determine the load requirement of the lever: Based on the maximum deformation of the auxiliary device, the load that the lever needs to withstand can be deduced. Assuming the maximum deformation of the auxiliary device is δ mm and the load is F, then the load that the lever structure needs to withstand is: F = 30 N / mm × δ mm = 30 N; Where 30N / mm is a coefficient, which converts the force into Newton units; Analysis of the strength and stability of the lever structure: After determining the dimensions of the lever structure, it is necessary to analyze its strength and stability. Based on the designed lever structure dimensions and load requirements, the mechanical performance indicators such as bending stress, shear stress, and torque of the lever structure can be calculated. The bending stress coefficient is calculated as follows: (1.1 × π / 2 × 30) / (30 × 157 GPa) = 0.012 MPa. For example, if the lever structure has an elastic modulus of 70 GPa, a yield strength of 157 MPa, a cross-sectional area of ​​3000 square millimeters, a bending angle of π / 2 radians, and a load of 30 N, then according to the shear stress formula: τ=F / A; Where τ is the shear stress, F is the lever force, and A is the cross-sectional area of ​​the rod; Based on this, the shear stress under a given load can be calculated: τ = F / A = 30 / (3.0e-4) = 1e8Pa; According to the lever theorem, torque is inversely proportional to the lever length. Since the lever length is 300mm, the torque is: 1 / 0.3 = 3.33 N·m = 3.33 N·m; Distance to the point of application = 1 / 3.33 = 0.30m; The force exerted by the lever = torque / distance from the point of application = 3.33 / 0.30 = 11.1 N.

[0039] In this embodiment, to make the key assist device more intelligent and prevent loss, a monitoring module can be installed on the key assist device to monitor the unlocking process, provide unlocking prompts, and extend battery life, etc.; a positioning module, a communication module, and a voice module can also be installed to enable locating the key assist device via a mobile terminal to prevent loss, as detailed below: 1. Intelligent Recognition System: Through a built-in microprocessor and sensors, it achieves accurate recognition of the key's position and orientation, effectively reducing the possibility of misoperation. The recognition accuracy exceeds 90% and performs stably under various environmental conditions, including different lighting, distances, and angles.

[0040] 2. Bluetooth Function: The key assist device has a built-in Bluetooth module, enabling wireless connection with mobile devices. Users can remotely control the key assist device via a mobile application to unlock doors from a distance. The connection speed is fast and stable, with a connection time of less than 10 seconds, signal stability reaching 95%, and a communication distance exceeding 10 meters.

[0041] 3. Unlocking Indicator Function: The key assist device has a built-in buzzer and LED light to provide unlocking prompts, making it easy for users to quickly find the correct key. The sound and light prompts are clearly visible, ensuring that users can accurately perceive the unlocking prompts in various environments.

[0042] 4. Battery Life: This product uses a high-efficiency battery, combining energy-saving design and intelligent sleep mode to significantly extend battery life and reduce frequent charging. According to experimental data, under normal use conditions, the battery life exceeds one week, and the charging frequency is less than once a month, providing users with a stable and long-lasting user experience.

[0043] 5. Anti-loss function: This product's key assist device has a built-in GPS chip, which can locate the key in real time via a mobile application to prevent loss. Simultaneously, when the key assist device exceeds a set distance from the user, the mobile phone will automatically alert the user. According to experimental data, in most environments, the positioning accuracy exceeds 90%, and the alert time is less than 1 minute, providing users with highly effective anti-loss protection.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and the contents not described in detail in the specification of the present invention are well known to those skilled in the art.

Claims

1. A key assist device, characterized in that, It includes a handle (1), a handle (4), an adjusting handle (5), an adjusting device (7), and a clamping device (11); A clamping device (11) is provided at one end of the handle (1); A handle (4) is also provided on the handle body (1). The handle (4) is set along the length of the handle body (1). When the user grabs the handle body, the handle (4) is located on the outside of the back of the user's hand. The clamping device (11) includes an upper clamping plate and a lower clamping plate, and the clamping device (11) is provided with an adjustment device (7) for the distance between the upper clamping plate and the lower clamping plate; One end of the adjusting handle (5) is detachably mounted on the handle (4), and the other end is fixedly mounted on the clamping device (11) via the adjusting device (7); It also includes a seat lock device, which includes a button push rod (3), a push rod (2), a spring (8) and a damper (9); The end of the push rod (3) is set with a sawtooth (31), and multiple slide rails (32) are set on the cylindrical surface along the thrust direction; One end of the push rod (2) is inserted into the button push rod (3). The cylindrical surface of its end is provided with a cam tooth (21) that meshes with the saw tooth (31) of the button push rod (3). The push rod (3) is pushed to convert the motion of the push rod (2) into rotational operation through the meshing saw tooth (31) and cam tooth (21). The other end of the push rod (2) is connected to a spring (8), and the spring (8) pushes the end of the damper (9) against the clamping device (11). The handle (1) is a hollow rod, and the inner surface of the handle (1) is provided with a guide structure (101) in an annular arrangement, including an annular guide groove, a deep groove and a shallow groove arranged at intervals that are adapted to multiple slide rails (32) so that the button push rod (3) can slide back and forth in the handle (1) and limit the position of the cam teeth (21).

2. The key aid as described in claim 1, characterized in that, The handle (1) is provided with a mounting base (10) hinged to the clamping device (11) at one end. The mounting base (10) is provided with an upward-facing bearing at one end. The clamping device (11) is rotatably connected to the bearing via a connecting shaft.

3. The key aid as described in claim 1, characterized in that, The adjusting handle (5) is connected to the handle (4) at one end with a screw hole, and the adjusting handle (5) is fixedly connected to the handle (4) by a fastener (6).

4. The key aid as described in claim 1, characterized in that, The arc of the handle (4) is set to 45° to 55°.

5. The key aid as described in claim 1, characterized in that, The handle (4) is made of a flexible soft material.

6. The key aid as claimed in claim 1, characterized in that, The handle (1) is provided with an anti-slip rubber ring on the part for the user to grip.

7. The key aid as described in claim 4, characterized in that, The adjusting device (7) and the fixing member (6) can be a bolt and nut structure.

8. The key aid as claimed in claim 1, characterized in that, The key assist device has a built-in GPS chip.

9. The key aid as claimed in claim 1, characterized in that, The key assist device has a built-in wireless communication module that connects wirelessly to mobile devices.

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