Hand wheel reset mechanism with elastic limiting structure

Abstract

The utility model discloses a hand wheel reset mechanism with elastic limiting structure, including installation shell, the inside rotation of installation shell is equipped with symmetrically setting slider no.

Description

Technical Field

[0001] This utility model relates to the technical field of handwheel reset mechanism, and in particular to a handwheel reset mechanism with an elastic limiting structure. Background Technology

[0002] In numerous mechanical equipment and industrial control fields, handwheels, as a common and important operating component, are widely used in various scenarios requiring manual adjustment and control, such as machine tool feed control and valve opening adjustment. Handwheel operation typically requires the operator to manually turn it to achieve a specific function. In many applications, the handwheel needs to return to its initial zero position after each operation to ensure accuracy and consistency for the next operation.

[0003] Currently, most handwheel reset mechanisms on the market adopt the traditional spring-pull rod structure. While this structure can achieve the handwheel reset function to a certain extent, it has several shortcomings. Firstly, the spring-pull rod structure is prone to uneven force distribution under stress, resulting in lower reset accuracy. The handwheel may not accurately return to its initial position, thus affecting the operational precision and performance of the equipment. Secondly, the reset spring in this structure is usually exposed, making it susceptible to dust, moisture, and other external factors in industrial environments, leading to rust and corrosion. This affects its elasticity and lifespan, increasing maintenance costs and failure rates.

[0004] Furthermore, traditional handwheel reset mechanisms have relatively complex structures and occupy a large space, making them unsuitable for installation in equipment with limited space. Moreover, their maintenance is typically cumbersome, requiring specialized technicians, and lengthy repair times can negatively impact equipment operation and production efficiency should a malfunction occur. Utility Model Content

[0005] The purpose of this invention is to provide a handwheel reset mechanism with an elastic limiting structure. The handwheel rotation system, where the connecting rod is located, achieves an automatic reset function, making it more convenient to operate handwheel devices that require frequent operation and need to maintain a zero position, and also reducing the rate of operational errors. It adopts an embedded spring and a symmetrical upper and lower shell design, resulting in a compact structure to adapt to limited installation space. Reset is achieved through a mechanical structure, without relying on electronic or complex systems, making maintenance simple and highly reliable. The innovative radial elastic sheet reset structure ensures uniform force distribution, high reset accuracy, and an aesthetically pleasing appearance. The fully enclosed shell, consisting of the mounting shell and cover plate, is dustproof and moisture-proof, enhancing environmental adaptability. The front and rear shells are fixed at multiple points using standard Phillips head countersunk screws, ensuring the internal springs are stable and not easily loosened or displaced. The modular design of components such as the front and rear covers, limiting discs, springs, and screws facilitates mass production and maintenance.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A handwheel reset mechanism with an elastic limiting structure includes:

[0008] The mounting housing has two symmetrically arranged sliders, Slider 1 and Slider 2, which are rotatably mounted inside. A return spring is fixedly connected between Slider 1 and Slider 2. A cover plate is installed on the top of the mounting housing, and a handwheel assembly for moving Slider 1 and Slider 2 is installed on the cover plate.

[0009] In the aforementioned handwheel reset mechanism with elastic limiting structure, mounting ears are fixedly connected to both sides of the mounting housing.

[0010] In the aforementioned handwheel reset mechanism with elastic limiting structure, a central shaft is fixedly connected to the center of the bottom of the inner wall of the mounting housing, and connecting rings matching the central shaft are fixedly connected to both slider one and slider two, and both slider one and slider two are rotatably mounted on the central shaft through the connecting rings.

[0011] In the aforementioned handwheel reset mechanism with elastic limiting structure, a limiting block is provided on the inner wall of the mounting housing at a position between slider one and slider two.

[0012] In the aforementioned handwheel reset mechanism with elastic limiting structure, the cover plate is provided with a plurality of mounting screws arranged at equal intervals, and the cover plate is fixedly mounted to the mounting shell by the mounting screws.

[0013] In the aforementioned handwheel reset mechanism with elastic limiting structure, the handwheel assembly includes a handwheel shaft, and the bottom of the handwheel shaft is rotatably mounted on the top of the central shaft via a bearing. A connecting rod is fixedly connected to the bottom of the side of the handwheel shaft, and a lever is fixedly connected to the bottom of the connecting rod. The bottom of the lever is inserted between slider one and slider two.

[0014] In the aforementioned handwheel reset mechanism with elastic limiting structure, an arc-shaped groove matching the running trajectory of the lever is provided on the cover plate at the position corresponding to the lever.

[0015] This utility model has at least the following beneficial effects:

[0016] 1. This utility model realizes a handwheel reset mechanism with an elastic limiting structure. The handwheel rotation system where the connecting rod is located realizes an automatic reset function, making the operation of handwheel equipment that requires frequent operation and needs to be kept at zero position more convenient and reducing the operation error rate. It adopts an embedded spring and a symmetrical upper and lower shell design, with a compact structure to adapt to limited installation space. It relies on mechanical structure reset, without relying on electronic and complex systems, making maintenance simple and highly reliable. The innovative radial elastic sheet reset structure makes the force uniform, the reset accuracy high and the appearance beautiful. The fully enclosed shell composed of the mounting shell and the cover plate is dustproof and moisture-proof, enhancing environmental adaptability. The front and rear shells are fixed at multiple points by standard cross countersunk screws to ensure that the internal springs are stable and not easy to loosen or shift. The modular design of components such as front and rear covers, limiting plates, springs, and screws facilitates mass production and maintenance.

[0017] 2. Automatic Reset Function Significantly Improves Operational Convenience: When the handwheel of this invention rotates, it drives the lever at the bottom of the connecting rod to rotate via the handwheel shaft. This, in turn, actuates slider one or slider two, compressing the return spring and enabling handwheel operation. When the handwheel is released, the spring force of the return spring quickly returns slider one or slider two to its original position, automatically resetting the handwheel shaft to its initial position. This automatic reset function is particularly suitable for handwheel devices that require frequent operation and must maintain a zero position, such as the fine-tuning handwheel of a machine tool or the control handwheel of a valve. It greatly improves operator convenience, reduces manual reset time and operation steps, and increases work efficiency.

[0018] 3. Compact Structure Adaptable to Limited Installation Space: Utilizing an embedded spring and symmetrical upper and lower housing design, key components such as the return spring are cleverly embedded within the mounting housing, resulting in a more compact structure for the entire handwheel reset mechanism. This design effectively reduces the space occupied by the mechanism, allowing for easy installation in various space-constrained devices. It meets the installation requirements of different equipment for handwheel reset mechanisms, improving the overall layout rationality and space utilization of the equipment.

[0019] 4. Simple maintenance and high reliability: The handwheel reset function is primarily achieved through a mechanical structure, without relying on electronic components or complex control systems. The mechanical structure is characterized by high stability and strong anti-interference capabilities, enabling stable operation in various harsh industrial environments. Furthermore, the simple structure and fewer parts reduce the probability of malfunctions, lowering maintenance costs and cycles. Even in the event of a malfunction, maintenance personnel can quickly locate and repair the problem without requiring specialized electronic knowledge, thus improving the maintainability and availability of the equipment.

[0020] 5. Reduced operational error rate and ensured operational accuracy: The handwheel automatically returns to its original position after operation, avoiding the hassle of manual reset before the next operation. In some applications requiring high operational precision, such as the control handwheels of precision machining equipment, manual reset may lead to incorrect equipment operating parameters due to operator negligence or inaccurate operation, affecting product quality. The automatic reset function of this invention effectively avoids this situation, ensuring that each operation starts from the accurate initial position, reducing the operational error rate and improving operational accuracy and reliability.

[0021] 6. Innovative Spring Reset Structure Improves Reset Performance: Compared to traditional spring push-rod type reset structures, this invention adopts a radial elastic sheet design. This innovative spring reset structure can distribute force more evenly when subjected to force, making the reset process smoother and more precise, significantly improving reset accuracy. At the same time, the radial elastic sheet design is more aesthetically pleasing, enhancing the overall quality and grade of the product.

[0022] 7. Fully Enclosed Housing Design Enhances Environmental Adaptability: The fully enclosed housing design, consisting of a mounting shell and cover plate, effectively prevents external factors such as dust and moisture from entering the mechanism, protecting critical components such as the return spring and elastic plate from corrosion. Compared to open mechanical structures, this fully enclosed design is more adaptable to harsh industrial environments, extending the service life of the mechanism, reducing failures and damage caused by environmental factors, and improving the reliability and stability of the equipment.

[0023] 8. Multi-point screw fixing ensures structural stability: The front and rear housings are clamped and fixed using standard Phillips head countersunk screws. This multi-point fixing method ensures that the internal springs are not easily loosened or displaced under external forces, guaranteeing the structural stability of the handwheel reset mechanism. A stable structure further improves reset accuracy and reliability, reduces operational errors and malfunctions caused by structural loosening, and provides a strong guarantee for the long-term stable operation of the equipment.

[0024] 9. Modular design facilitates mass production and maintenance: Components such as front and rear covers, limit plates, springs, and screws all adopt a modular design and are standard parts. This design allows each component to be produced and processed independently, which is conducive to mass production, improves production efficiency, and reduces production costs. Furthermore, during maintenance, only the faulty module needs to be replaced, without replacing the entire mechanism, greatly shortening maintenance time, reducing maintenance costs, and improving the maintainability and economy of the equipment. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the handwheel reset mechanism with elastic limiting structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the handwheel reset mechanism with elastic limiting structure of this utility model;

[0028] Figure 3 This is an exploded structural diagram of the handwheel reset mechanism with elastic limiting structure of this utility model.

[0029] Figure 4 This is a schematic diagram of the mounting shell in the handwheel reset mechanism with elastic limiting structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the slider one in the handwheel reset mechanism with elastic limiting structure of this utility model;

[0031] Figure 6 This is a schematic diagram of the cover plate in the handwheel reset mechanism with elastic limiting structure of this utility model;

[0032] Figure 7 This is a schematic diagram of the handwheel assembly in the handwheel reset mechanism with elastic limiting structure of this utility model.

[0033] Explanation of icon numbers:

[0034] 1. Mounting housing; 2. Slider one; 3. Slider two; 4. Return spring; 5. Cover plate; 6. Handwheel assembly;

[0035] 101. Install the ear;

[0036] 102. Central shaft; 201. Connecting ring;

[0037] 103. Limiting block;

[0038] 501. Install screws;

[0039] 601. Handwheel shaft; 602. Connecting rod; 603. Lever; 6031. Arc groove. Detailed Implementation

[0040] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0041] Please refer to Figures 1 to 7As shown, an embodiment of this utility model provides a handwheel reset mechanism with an elastic limiting structure, comprising: a mounting shell 1, wherein a slider 1 2 and a slider 2 3 are symmetrically arranged and rotatably mounted inside the mounting shell 1, a reset spring 4 is fixedly connected between the slider 1 2 and the slider 2 3, a cover plate 5 is mounted on the top of the mounting shell 1, and a handwheel assembly 6 for moving the slider 1 2 and the slider 2 3 is mounted on the cover plate 5.

[0042] By adopting the above technical solutions, the handwheel rotation system where the connecting rod 602 is located achieves an automatic reset function, making the operation of handwheel equipment that requires frequent operation and needs to be kept at the zero position more convenient and reducing the rate of operational errors. The embedded spring and symmetrical upper and lower shell design result in a compact structure to adapt to limited installation space. Reset is achieved through mechanical structure, without relying on electronic and complex systems, making maintenance simple and highly reliable. The innovative radial elastic sheet reset structure ensures uniform force distribution, high reset accuracy, and an aesthetically pleasing appearance. The fully enclosed shell composed of the mounting shell 1 and the cover plate 5 is dustproof and moisture-proof, enhancing environmental adaptability. The front and rear shells are fixed at multiple points with standard Phillips head countersunk screws to ensure the stability of the internal springs and prevent them from loosening or shifting. The modular design of components such as the front and rear covers, limit plates, springs, and screws facilitates mass production and maintenance.

[0043] To facilitate the secure installation of the entire handwheel reset mechanism onto other equipment, in this embodiment, mounting ears 101 are fixedly connected to both sides of the mounting housing 1. The mounting ears 101 provide a standardized installation interface for the handwheel reset mechanism, allowing it to be easily fixed to various devices using bolts or other connecting parts. The installation process is simple and quick, ensuring the firmness and stability of the installation and preventing the handwheel reset mechanism from loosening or shifting due to vibration during equipment operation, thus ensuring its normal operation.

[0044] To ensure stable rotation of sliders 2 and 3 within the mounting housing 1 and achieve precise reset, in this embodiment: a central shaft 102 is fixedly connected to the center of the bottom of the inner wall of the mounting housing 1. Connecting rings 201, matching the central shaft 102, are fixedly connected to both sliders 2 and 3, and both sliders 2 and 3 are rotatably mounted on the central shaft 102 via the connecting rings 201. The cooperation between the central shaft 102 and the connecting rings 201 provides a precise center of rotation for sliders 2 and 3, allowing them to rotate smoothly and steadily around the central shaft 102. This reduces friction and wobbling during rotation, improves the accuracy and stability of the slider movement, and thus ensures the reset accuracy of the handwheel reset mechanism.

[0045] To effectively limit the movement range of sliders 2 and 3 and prevent them from interfering with each other or exceeding their normal working position during rotation, in this embodiment, a limiting block 103 is provided on the inner wall of the mounting housing 1, located between sliders 2 and 3. The limiting block 103 provides clear separation and limiting, preventing sliders 2 and 3 from getting too close or colliding during rotation, ensuring they operate within their respective prescribed movement ranges, avoiding mechanism failures caused by uncontrolled slider movement, and improving the reliability and stability of the handwheel reset mechanism.

[0046] To achieve a secure connection between the cover plate 5 and the mounting shell 1, and to ensure the sealing and stability of the internal structure of the mounting shell 1, in this embodiment: the cover plate 5 is provided with a plurality of mounting screws 501 arranged at equal intervals, and the cover plate 5 is fixedly mounted to the mounting shell 1 by the mounting screws 501. The equally spaced mounting screws 501 can evenly distribute the connection force between the cover plate 5 and the mounting shell 1, so that the cover plate 5 is firmly fixed to the mounting shell 1, effectively preventing the cover plate 5 from loosening or falling off. At the same time, this connection method can also ensure the sealing of the interior of the mounting shell 1, prevent dust, moisture and other foreign objects from entering, protect internal parts from damage, and extend the service life of the mechanism.

[0047] To achieve linkage between handwheel rotation and slider movement, thereby converting handwheel rotation into linear slider movement and enabling handwheel operation and reset functions, in this embodiment: the handwheel assembly 6 includes a handwheel shaft 601, the bottom of which is rotatably mounted on the top of the central shaft 102 via a bearing. A connecting rod 602 is fixedly connected to the bottom side of the handwheel shaft 601, and a lever 603 is fixedly connected to the bottom of the connecting rod 602. The bottom of the lever 603 is inserted between slider 2 and slider 3. The handwheel shaft 601 is mounted on the central shaft 102 via bearings, ensuring that the handwheel can rotate flexibly. The design of connecting rod 602 and lever 603 cleverly transmits the rotational motion of the handwheel to slider 2 and slider 3. When the handwheel rotates, lever 603 moves the sliders, causing them to move against the elastic force of return spring 4, thus realizing the operation of the handwheel. When the handwheel is released, the elastic force of return spring 4 can drive the sliders to reset, thereby automatically returning the handwheel to its initial position, realizing the automatic reset function of the handwheel.

[0048] To ensure that the lever 603 does not interfere with the cover plate 5 during movement, and to provide sufficient movement space for the lever 603 to guarantee smooth handwheel operation, in this embodiment, an arc-shaped groove 6031 is provided on the cover plate 5 at the position corresponding to the lever 603, matching the running trajectory of the lever 603. The design of the arc-shaped groove 6031 fully considers the movement trajectory of the lever 603, providing a safe and smooth movement channel for the lever 603. It can prevent the lever 603 from colliding with the cover plate 5 during movement, reduce movement resistance, make handwheel operation easier and more flexible, and improve the operational performance and user experience of the handwheel reset mechanism.

[0049] The working principle of this utility model is as follows:

[0050] When the handwheel needs to be operated, the handwheel shaft 601 in the handwheel assembly 6 is rotated. Since the bottom of the handwheel shaft 601 is rotatably mounted on the top of the central shaft 102 via a bearing, the handwheel can rotate flexibly. The rotation of the handwheel shaft 601 drives the connecting rod 602, which is fixedly connected to the bottom of the side, to rotate, thereby causing the lever 603, which is fixedly connected to the bottom of the connecting rod 602, to rotate as well. The bottom of the lever 603 is inserted between slider 2 and slider 3. Its rotation will actuate slider 2 or slider 3, causing them to move along the central shaft 102 against the elastic force of the return spring 4. During this process, the limiting block 103 on the inner wall of the mounting housing 1 restricts the range of motion of slider 2 and slider 3, preventing them from interfering with each other or exceeding their normal working position.

[0051] Meanwhile, the arc-shaped groove 6031 on the cover plate 5 corresponding to the position of the lever 603 provides a smooth movement channel for the lever 603, ensuring that the lever 603 will not interfere with the cover plate 5 during movement, thus guaranteeing the smoothness of handwheel operation.

[0052] When the handwheel is released, the return spring 4 begins to return to its original state under the action of elastic force, causing slider 2 or slider 3 to move along the central axis 102 back to the initial position. The movement of the slider will then act on the handwheel shaft 601 through the lever 603 and the connecting rod 602, causing the handwheel shaft 601 to automatically return to the initial position, thereby realizing the automatic reset function of the handwheel.

[0053] In addition, the mounting ears 101 on both sides of the mounting housing 1 facilitate the secure installation of the entire handwheel reset mechanism onto other equipment; the cover plate 5 is fixed to the mounting housing 1 by mounting screws 501 arranged at equal intervals, which ensures the sealing and stability of the internal structure of the mounting housing 1, prevents foreign objects such as dust and moisture from entering, protects the internal parts from damage, and extends the service life of the mechanism.

[0054] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A handwheel reset mechanism with an elastic limiting structure, comprising a mounting housing (1), characterized in that, Inside the mounting housing (1), there are symmetrically arranged slider one (2) and slider two (3). A return spring (4) is fixedly connected between slider one (2) and slider two (3). A cover plate (5) is installed on the top of the mounting housing (1). A handwheel assembly (6) for moving slider one (2) and slider two (3) is installed on the cover plate (5).

2. The handwheel reset mechanism with elastic limiting structure according to claim 1, characterized in that: Mounting ears (101) are fixedly connected to both sides of the mounting shell (1).

3. The handwheel reset mechanism with elastic limiting structure according to claim 2, characterized in that: A central shaft (102) is fixedly connected to the center of the bottom of the inner wall of the mounting shell (1). A connecting ring (201) matching the central shaft (102) is fixedly connected to both slider one (2) and slider two (3). Both slider one (2) and slider two (3) are rotatably mounted on the central shaft (102) through the connecting ring (201).

4. The handwheel reset mechanism with elastic limiting structure according to claim 3, characterized in that: A limiting block (103) is provided on the inner wall of the mounting shell (1) and at a position between the slider one (2) and the slider two (3).

5. The handwheel reset mechanism with an elastic limiting structure according to claim 4, characterized in that: The cover plate (5) is provided with a plurality of mounting screws (501) arranged at equal intervals, and the cover plate (5) is fixedly installed on the mounting shell (1) by the mounting screws (501).

6. The handwheel reset mechanism with an elastic limiting structure according to claim 5, characterized in that: The handwheel assembly (6) includes a handwheel shaft (601), and the bottom of the handwheel shaft (601) is rotatably mounted on the top of the central shaft (102) via a bearing. A connecting rod (602) is fixedly connected to the bottom of the side of the handwheel shaft (601), and a lever (603) is fixedly connected to the bottom of the connecting rod (602). The bottom of the lever (603) is inserted between the first slider (2) and the second slider (3).

7. The handwheel reset mechanism with an elastic limiting structure according to claim 6, characterized in that: An arc-shaped groove (6031) matching the running trajectory of the lever (603) is provided on the cover plate (5) at the position corresponding to the lever (603).

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