Lifting type handle capable of mechanically preventing clamping

Abstract

The utility model discloses a lifting type handle capable of mechanically preventing clamping, which comprises a lock panel movably connected with a handle component capable of sliding inwards and outwards to extend out of and retract into the lock panel. A pushing head and an elastic reset assembly are arranged between the handle assembly and the lock panel, the pushing head can push the handle assembly outwards to enable the handle assembly to extend out of the lock panel, the elastic reset assembly elastically pushes the handle assembly inwards to enable the handle assembly to retract into the lock panel, and the pushing head is connected with an electric driving assembly used for driving the pushing head to move inwards and outwards. And when the electric driving assembly drives the pushing head to move into the lock panel, the handle assembly retracts into the lock panel under the action of the elastic force of the elastic reset assembly. The anti-pinch device has the advantages of mechanical anti-pinch performance, higher safety and higher reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent handles, in particular to a lifting handle capable of mechanically preventing pinching. Background Art

[0002] A lift handle is a door handle that can automatically extend and hide. In the current smart home market, lift handles have been widely used as a convenient and practical door control device. The core advantage of lift handles is that they can provide a more convenient and safer use experience than traditional static handles. Through the mechanism of automatic extension and hiding, lift handles can not only reduce the space occupied by door handles and increase aesthetics, but also reduce the risk of bacteria and viruses being transmitted through contact to a certain extent.

[0003] Traditional lifting handle designs generally use motors as the power source, and use the rotation of the motor to drive the mechanical structure to achieve the extension and retraction movement of the handle. This design concept enables the lifting handle to be automatically controlled, and the user can operate the extension and retraction of the handle only through simple touch or remote control, which greatly improves the convenience of use. However, in actual use, this lifting handle directly driven by a motor also exposes a series of safety issues. Among them, the most prominent is the so-called "hand pinching problem". This problem is mainly due to the fact that when the motor drives the handle to retract, if the user's hand is still holding the handle, the power of the motor may cause the user's hand to be pinched, which will not only cause physical harm to the user, but also seriously affect the safety and reliability of the product.

[0004] In addition, the direct-drive motor design may also have problems with insufficient power or overload protection. In some extreme cases, if the handle encounters a large external force that prevents it from retracting normally, the motor may be damaged due to overload, or it may not work properly when the power is insufficient to overcome the external force, which will have a negative impact on user experience and product life.

[0005] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the present invention is made based on this situation. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide a safer and more reliable lifting handle capable of mechanically preventing pinching.

[0007] The utility model is realized by the following technical solutions:

[0008] In order to solve the above technical problems, the utility model provides a lifting handle that can mechanically prevent pinching, including a lock panel, on which is movably connected a handle assembly that can slide inwards and outwards to extend and retract the lock panel, a pushing head that can push the handle assembly outwards to extend the lock panel outwards, and an elastic reset assembly that elastically presses the handle assembly inwards to retract the lock panel are provided between the handle assembly and the lock panel, the pushing head is connected to an electric drive assembly for driving it to move inwards and outwards, and when the electric drive assembly drives the pushing head to move into the lock panel, the handle assembly retracts into the lock panel under the elastic force of the elastic reset assembly.

[0009] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle capable of mechanically preventing pinching, wherein the handle assembly includes a vertical handle body and a connecting arm arranged at the lower part of the handle body and used for movably connecting with a lock panel.

[0010] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can mechanically prevent pinching, in which the electric drive assembly includes a driving motor that can rotate forward and reverse, and a transmission structure arranged between the driving motor and the pushing head, and the transmission structure converts the rotational motion of the output shaft of the driving motor into linear motion of the pushing head along the inward and outward directions.

[0011] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can mechanically prevent pinching, in which the transmission structure includes a rotating part rotatably connected to the lock panel, a rack part arranged on the pushing head, and a bevel gear pair is provided between the output shaft of the drive motor and the rotating part, and a gear rack pair is provided between the rotating part and the rack part.

[0012] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can prevent pinching mechanically, wherein the driving motor is electrically connected to a first position sensor for detecting whether the pushing head has moved back into place, and a second position sensor for detecting whether the handle assembly has moved back into place.

[0013] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can mechanically prevent pinching, in which the first position sensor and the second position sensor are both touch switches, and when the pushing head retracts into the lock panel, it touches the first position sensor, and when the handle assembly retracts into the lock panel, it touches the second position sensor; when the first position sensor and the second position sensor are touched at the same time, the driving motor stops rotating, and when only the first position sensor is touched, the driving motor reverses to drive the pushing head to extend out of the lock panel.

[0014] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can mechanically prevent pinching, in which the elastic reset assembly includes a guide rod fixed on the lock panel, a limit plate fixed on the handle assembly, a through hole provided on the limit plate for the rear end of the guide rod to pass through, and an elastic reset part that is sleeved on the guide rod and presses the limit plate backwards.

[0015] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle capable of mechanically preventing pinching, wherein a first guide structure is provided between the handle assembly and the push head, and a second guide structure is provided between the handle assembly and the lock panel.

[0016] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can mechanically prevent pinching, wherein the first guide structure includes a first guide groove provided on the handle assembly and arranged along the inward and outward directions, and a first guide rail provided on the pushing head and capable of slidingly cooperating with the first guide groove.

[0017] In order to further solve the technical problem to be solved by the utility model, the utility model provides a lifting handle that can mechanically prevent pinching, wherein the second guide structure includes a second guide groove arranged on the lock panel and along the inward and outward directions, and a second guide rail arranged on the handle assembly and slidingly cooperates with the second guide groove.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. In the present invention, when the electric drive assembly causes the push head to move inward, the handle assembly is not pulled back directly by the electric drive assembly, but is realized by the elastic force provided by the elastic reset assembly installed therein. The cleverness of this design is that when the handle assembly encounters obstacles such as fingers during the retraction process, the retraction force of the handle will be automatically weakened due to the obstacles, because it is pushed by the elastic force provided by the elastic reset assembly rather than the direct force of the electric drive assembly, thus greatly reducing the risk of pinching. This mechanism not only protects users from injury, but also avoids the problem of motor overload caused by excessive resistance, thereby enhancing the safety and durability of the lifting handle.

[0020] 2. In addition, the elastic reset component used in the utility model is a purely mechanical anti-pinch structure, which realizes the functions of automatic rebound and reset through mechanical principles. This structure not only has the advantages of safety and reliability, but also has a simple structure, low cost and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model (handle assembly extended state);

[0023] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 It is an exploded schematic diagram of the utility model;

[0025] Figure 4 It is a cross-sectional schematic diagram of the utility model. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figures 1 to 4 A lifting handle capable of mechanically preventing pinching is shown, comprising a lock panel 1, to which a handle assembly 2 is movably connected and can slide inwards and outwards to extend and retract the lock panel 1, a pushing head 3 is provided between the handle assembly 2 and the lock panel 1, which can push the handle assembly 2 outwards to extend the lock panel 1 outwards, and an elastic reset assembly 4 is provided which elastically presses the handle assembly 2 inwards to retract the lock panel 1 inwards, and the outer end of the pushing head 3 can abut and separate from the handle assembly 2.

[0028] The push head 3 is connected with an electric drive assembly 5 for driving the push head 3 to move inward and outward. Under the drive of the electric drive assembly 5, the push head 3 can push the handle assembly 2 outward so that it extends out of the lock panel 1 for the user to grasp.

[0029] In the utility model, when the electric drive assembly 5 drives the push head 3 to move into the lock panel 1 , the handle assembly 2 retracts into the lock panel 1 under the elastic force of the elastic reset assembly 4 .

[0030] Specifically, when the electric drive assembly 5 causes the push head 3 to move inward, the handle assembly 2 is not pulled back directly by the electric drive assembly 5, but is achieved by the elastic force provided by the elastic reset assembly 4 installed therein. The cleverness of this design is that when the handle assembly 2 encounters obstacles such as fingers during the retraction process, the retraction force of the handle will be automatically weakened due to the obstacles, because it is pushed by the elastic force provided by the elastic reset assembly 4 rather than the direct force of the electric drive assembly, which greatly reduces the risk of pinching. This mechanism not only protects users from injury, but also avoids the problem of motor overload caused by excessive resistance, thereby enhancing the safety and durability of the lifting handle.

[0031] In addition, the elastic reset component 4 adopted by the utility model is a purely mechanical anti-pinch structure, which realizes the functions of automatic rebound and reset through mechanical principles. This structure is not only safe and reliable, but also simple in structure, low in cost and easy to implement.

[0032] More specifically, the handle assembly 2 includes a vertical handle body 21, and a connecting arm 22 disposed at the lower part of the handle body 21 and used for being movably connected to the lock panel 1. The handle body 21 is the part that the user directly contacts, and the user can hold it comfortably during use. The connecting arm 22 is the key connecting component between the handle body 21 and the lock panel 1, which enables the handle assembly 2 to slide inward and outward on the lock panel 1. This design allows the handle assembly 2 to be stored in the lock panel 1 when not in use, keeping the door clean and beautiful, while also reducing the risk of accidental damage to the handle during daily use.

[0033] In addition, compared with the double connecting arm structure of the conventional handle, the utility model adopts the structure of a single connecting arm 22, which is simpler in structure and simpler in cost. First of all, the structure of the single connecting arm 22 simplifies the design of the entire handle assembly 2, which not only reduces the materials required in the manufacturing process, but also reduces the complexity of processing. This simplification can achieve higher efficiency and cost-effectiveness in the production and assembly process because it involves fewer parts and simpler assembly steps. The simple single connecting arm structure also helps to improve the aesthetics of the lifting handle. With fewer components, the appearance of the entire handle is more streamlined and modern, which allows it to better integrate into various facade designs, whether traditional or modern interior decoration styles. The simplicity of this design also makes cleaning and maintenance easier, because fewer gaps and seams mean that the accumulation of dust and dirt will be reduced.

[0034] More specifically, the electric drive assembly 5 is the core part of the lifting handle, which is responsible for converting the electric signal into mechanical action, thereby realizing the opening and closing function of the lifting handle. In this system, the electric drive assembly 5 is composed of a driving motor 51 capable of forward and reverse rotation and a sophisticated transmission structure, which is responsible for converting the rotational motion of the driving motor 51 into the linear motion of the push head 3.

[0035] Furthermore, the transmission structure includes a rotating member 52 rotatably connected to the lock panel 1, a rack portion 31 provided on the push head 3, and a bevel gear pair 5a is provided between the output shaft of the drive motor 51 and the rotating member 52, and a gear rack pair 5b is provided between the rotating member 52 and the rack portion 31. The rotating member 52 is rotatably connected to the lock panel 1 and can rotate under the action of the motor. The output shaft of the drive motor 51 and the rotating member 52 are connected by a set of bevel gear pairs 5a. This special gear design allows the direction of motion to be changed while transmitting the rotational motion, which is the key to converting the rotational motion on the motor axis into motion perpendicular to the axis. The gear rack pair 5b between the rotating member 52 and the rack portion 31 is responsible for further converting the rotational motion of the rotating member 52 into the linear motion of the rack portion 31. When the drive motor 51 is running, the bevel gear pair 5a transmits the rotational motion of the motor to the rotating member 52, and the rotating member 52 rotates immediately, and the gear on it meshes with the rack portion 31, pushing the push head 3 to move along the inner and outer directions.

[0036] It is worth noting that safety and accuracy are of vital importance in the design and operation of the lifting handle. To ensure this, the lifting handle system of the utility model has two key position sensors built in, namely the first position sensor 53 and the second position sensor 54. The main responsibility of these sensors is to monitor and confirm the position of the push head 3 and the handle assembly 2, ensuring that they can return to their correct position, thereby ensuring the normal operation of the lock.

[0037] The first position sensor 53 is specifically responsible for detecting the position of the push head 3. When the push head 3 moves in the inward and outward directions and finally moves inward to its predetermined position, it triggers the first position sensor 53 and sends a signal to the system, indicating that the push head 3 has returned to its correct position. Similarly, the second position sensor 54 is used to monitor the status of the handle assembly 2. When the inner end surface of the connecting arm 22 of the handle assembly 2 moves backward to its correct position and triggers the second position sensor 54, the system receives a signal to confirm that the handle assembly 2 has also returned to its correct position.

[0038] Preferably, both the first position sensor 53 and the second position sensor 54 are touch switches. When the push head 3 is retracted into the lock panel 1, it touches the first position sensor 53, and when the handle assembly 2 is retracted into the lock panel 1, it touches the second position sensor 54; when the first position sensor 53 and the second position sensor 54 are touched at the same time, the driving motor 51 stops rotating, and when only the first position sensor 53 is touched, the driving motor 51 reverses and drives the push head 3 to extend out of the lock panel 1.

[0039] The intelligence of the system lies in that it requires the two sensors to be triggered at the same time, that is, the push head 3 and the handle assembly 2 have reached their respective correct positions, before determining that the locking process of the lifting handle is completed, and then instructing the drive motor 51 to stop operating. This mechanism ensures that every part of the lock works correctly and safely, and improves the reliability of the entire system.

[0040] However, if only the first position sensor 53 is triggered during this process, while the second position sensor 54 is not triggered, this often means that the handle assembly 2 encounters an obstacle, such as a user's finger, during its movement. In order to prevent pinching or damage, the system will immediately take responsive measures. In this case, the control system of the lifting handle will give priority to the safety of the user and control the drive motor 51 to perform a reverse action. This action will cause the handle assembly 2 to extend from the lock panel 1, thereby providing space for the removal of the obstacle and avoiding possible damage or failure.

[0041] After extending the handle assembly 2, the system will not immediately try to retract it again. It will wait for a safe time interval to give the user enough time to remove the obstacle. After that, the system will start the drive motor 51 again and try to retract the handle assembly 2. If the second position sensor 54 is correctly triggered at this time, indicating that the handle assembly 2 has been successfully returned to its position, the system will stop the drive motor 51 and complete the entire locking process.

[0042] The addition of this safety feature significantly improves the user-friendliness of the lift handle and ensures safety during use. At the same time, this design also reduces the risk of damage caused by improper operation and extends the service life of the lift handle. By monitoring the position status of mechanical components in real time and responding immediately when an abnormality is detected, the control system of the lift handle not only provides an efficient locking mechanism, but also provides additional safety for users. This intelligent feedback and adaptive adjustment mechanism ensures the high reliability of the lift handle and an excellent user experience.

[0043] In order to ensure the smoothness of the lifting handle operation and its safe reset function under abnormal conditions, the utility model introduces an elastic reset assembly 4. One of the components of the elastic reset assembly 4 is the guide rod 41, which is a straight rod fixed to the lock panel 1, and its function is to provide a stable guide path for the movement of other components. The limit plate 42 is a flat plate fixed to the handle assembly 2, which cooperates with the guide rod 41 to determine the farthest movement range of the handle assembly to avoid damage that may be caused by excessive movement. A through hole 421 is designed on the limit plate 42, which allows the rear end of the guide rod 41 to pass through, so that the limit plate 42 can slide along the guide rod 41, thereby achieving smooth movement of the handle assembly 2.

[0044] The most critical part is the elastic reset member 43, which is usually made of a spring or other material with a certain elasticity. It is sleeved on the guide rod 41, and the inner end of the elastic reset member 43 abuts against the limit plate 42 to press the limit plate 42 backward. This configuration can not only provide the necessary reset force for the handle assembly 2 to help it automatically return to the initial position after release, but also provide a buffer when an external force suddenly acts, reducing the damage of the impact force to the internal structure of the lifting handle.

[0045] Through such a design, the elastic reset component 4 not only ensures that the handle component 2 can be automatically and smoothly reset after use, but also significantly improves the safety and convenience of the entire lifting handle during use. Its elastic reset mechanism protects the internal structure from excessive force while providing users with an elegant use experience, ensuring that the handle component can reliably return to its original state after each operation, thereby maintaining the overall performance and appearance of the lifting handle.

[0046] In the design of a lifting handle, it is crucial to ensure smooth and precise interaction between the various moving parts. To achieve this goal, the utility model designs two sets of sophisticated guide structures, namely, a first guide structure between the handle assembly 2 and the push head 3, and a second guide structure between the handle assembly 2 and the lock panel 1. The design of these guide structures not only ensures accurate cooperation between the parts, but also improves the overall mechanical stability and smooth operation.

[0047] The first guide structure is located between the handle assembly 2 and the push head 3, and plays a vital role as a bridge. It is mainly composed of a first guide groove 23 located on the handle assembly 2 and a first guide rail 32 located on the push head 3. The first guide groove 23 is arranged along the inner and outer directions of the handle assembly 2, forming a precise track. Accordingly, the first guide rail 32 is designed to perfectly fit with the first guide groove 23 and can slide freely therein. This cooperation ensures the directionality and stability of the push head 3 during movement, so that it can move accurately along the set path, thereby realizing a smooth locking or unlocking operation of the handle.

[0048] Similarly, the second guide structure between the handle assembly 2 and the lock panel 1 also adopts a similar design concept to ensure that the handle assembly 2 can move smoothly in the inward and outward directions. The structure includes a second guide groove 11 provided on the lock panel 1 and a second guide rail 24 located on the handle assembly 2, and the two are also slidably matched with each other. The second guide groove 11 is provided along the inward and outward directions of the lock panel 1, providing a clear guide path for the handle assembly 2. The second guide rail 24 is precisely embedded in this guide groove, ensuring the linear movement of the handle assembly 2 during operation, avoiding any possible deviation or swing, thereby ensuring the stability and accuracy of the operation.

[0049] Through the clever design of these two sets of guide structures, the interaction between the key moving parts of the lifting handle becomes smoother and more reliable. This design not only improves the operating experience of the lifting handle, reduces friction and wear during use, but also greatly improves the overall durability and safety of the lock. When using the lifting handle, users can feel the smoothness and precision of each operation, which is the result of these carefully designed guide structures.

Claims

1. A lifting handle capable of mechanically preventing pinching, characterized in that: The invention comprises a lock panel (1), on which a handle assembly (2) is movably connected and can slide inwards and outwards to extend and retract the lock panel (1); a push head (3) is provided between the handle assembly (2) and the lock panel (1) and can push the handle assembly (2) outwards to extend the lock panel (1); and an elastic reset assembly (4) is provided to elastically press the handle assembly (2) inwards to retract the handle assembly (2) inwards; the push head (3) is connected to an electric drive assembly (5) for driving the push head (3) to move inwards and outwards; when the electric drive assembly (5) drives the push head (3) to move into the lock panel (1), the handle assembly (2) is retracted into the lock panel (1) under the elastic force of the elastic reset assembly (4).

2. The mechanically anti-pinch lifting handle according to claim 1, characterized in that: The handle assembly (2) comprises a vertical handle body (21) and a connecting arm (22) disposed at the lower part of the handle body (21) and used for being movably connected to the lock panel (1).

3. A lifting handle capable of mechanically preventing pinching according to claim 1 or 2, characterized in that: The electric drive assembly (5) comprises a drive motor (51) capable of forward and reverse rotation, and a transmission structure arranged between the drive motor (51) and the push head (3), wherein the transmission structure converts the rotational motion of the output shaft of the drive motor (51) into linear motion of the push head (3) in the inward and outward directions.

4. The mechanically anti-pinch lifting handle according to claim 3, characterized in that: The transmission structure comprises a rotating member (52) rotatably connected to the lock panel (1), a rack portion (31) provided on the push head (3), a bevel gear pair (5a) provided between the output shaft of the drive motor (51) and the rotating member (52), and a gear rack pair (5b) provided between the rotating member (52) and the rack portion (31).

5. The mechanically anti-pinch lifting handle according to claim 3, characterized in that: The driving motor (51) is electrically connected to a first position sensor (53) for detecting whether the push head (3) has moved backwards to a proper position, and a second position sensor (54) for detecting whether the handle assembly (2) has moved backwards to a proper position.

6. The mechanically anti-pinch lifting handle according to claim 5, characterized in that: The first position sensor (53) and the second position sensor (54) are both touch switches. When the push head (3) is retracted into the lock panel (1) and is in position, it touches the first position sensor (53). When the handle assembly (2) is retracted into the lock panel (1) and is in position, it touches the second position sensor (54). When the first position sensor (53) and the second position sensor (54) are touched at the same time, the driving motor (51) stops rotating. When only the first position sensor (53) is touched, the driving motor (51) reverses and drives the push head (3) to extend out of the lock panel (1).

7. A lifting handle capable of mechanically preventing pinching according to claim 1 or 2, characterized in that: The elastic reset assembly (4) comprises a guide rod (41) fixed on the lock panel (1), a limit plate (42) fixed on the handle assembly (2), a through hole (421) provided on the limit plate (42) and through which the rear end of the guide rod (41) passes, and an elastic reset member (43) sleeved on the guide rod (41) and pressing the limit plate (42) backwards.

8. The mechanically anti-pinch lifting handle according to claim 1 or 2, characterized in that: A first guide structure is provided between the handle assembly (2) and the push head (3), and a second guide structure is provided between the handle assembly (2) and the lock panel (1).

9. The mechanically anti-pinch lifting handle according to claim 8, characterized in that: The first guide structure comprises a first guide groove (23) provided on the handle assembly (2) and arranged along the inner and outer directions, and a first guide rail (32) provided on the push head (3) and capable of slidably cooperating with the first guide groove (23).

10. The mechanically anti-pinch lifting handle according to claim 8, characterized in that: The second guide structure comprises a second guide groove (11) provided on the lock panel (1) and arranged along the inner and outer directions, and a second guide rail (24) provided on the handle assembly (2) and slidably engaged with the second guide groove (11).

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