A stroke and torque linkage control device for electrical assemblies

Abstract

The utility model relates to the technical field of electric equipment product accessories, specifically relates to a stroke and torque linkage control device matched with electric equipment, including box and box cover, the box cover covers on the box, be equipped with the fork, stroke transfer gear, stroke input gear, stroke controller, wiring board and torque controller in the box, wherein: the fork one end is used for with the stroke leading -out mechanism or torque leading -out mechanism of electric equipment connection, the other end with the stroke transfer gear or torque controller transmission connection. This technical scheme is through setting up the fork and gear transmission structure cooperation, replaces traditional friction piece transmission or complex connecting rod mechanism, has reduced the abrasion of transmission component, has promoted the transmission reliability and precision of stroke control, torque controller and the transmission connection of fork replace rigid welding or complex hinge structure, makes torque transmission response more sensitive, has reduced the risk that the connecting structure is damaged because of frequent stress.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical installation product accessories, and particularly relates to a stroke and torque linkage control device matched with electrical installation. Background Art

[0002] In the field of industrial control, as a driving execution component, electrical installation often needs to be matched with corresponding stroke control and torque control devices to achieve precise limit of the equipment operation stroke and safe control of the output torque. In the existing control devices matched with electrical installation, the transmission structures of the stroke control and torque control mostly adopt friction plate transmission, chain transmission or complex link mechanisms, among which:

[0003] For stroke control, some devices transmit power through the friction between the friction plate and the input shaft. After long-term use, the friction plate is easily worn, resulting in an increase in the transmission gap and a decrease in the stroke control accuracy, such as trigger signal delay or false triggering.

[0004] For torque control, the connection between the torque extraction mechanism of the traditional device and the control component is mostly rigid welding or complex hinge structures. When the output torque of the electrical installation changes, the torque transmission response lags, and the connection structure is easily damaged due to frequent stress. Content of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems in the related technologies. For this purpose, the purpose of the utility model is to provide a stroke and torque linkage control device matched with electrical installation to improve the transmission reliability and stroke control accuracy.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A stroke and torque linkage control device matched with electrical installation includes a box body and a box cover, and the box cover covers the box body; a fork, a stroke transfer gear, a stroke input gear, a stroke controller, a wiring board and a torque controller are arranged in the box body, where: one end of the fork is used to connect with the stroke extraction mechanism or torque extraction mechanism of the electrical installation, and the other end is in transmission connection with the stroke transfer gear or the torque controller; the stroke input gear is in transmission connection with the stroke controller, and both the stroke controller and the torque controller are electrically connected with the wiring board.

[0008] In some embodiments of the utility model, the fork includes a stroke fork section and a torque fork section. The stroke fork section meshes with the stroke transfer gear, the stroke transfer gear meshes with the stroke input gear, and the stroke input gear is fixedly connected with the input shaft of the stroke controller.

[0009] In some embodiments of this utility model, the number of the stroke intermediate gears is three, the three stroke intermediate gears mesh sequentially, and a transmission chain is formed between the stroke shift fork section and the stroke input gear.

[0010] In some embodiments of this utility model, the stroke controller includes a counting gear and a cam. The counting gear is connected to the stroke input gear. The cam is fixed coaxially with the counting gear. The cam is used to trigger a micro switch in the stroke controller. The micro switch is electrically connected to the terminal block.

[0011] In some embodiments of this utility model, the torque controller includes a rotating shaft and a sector plate. The rotating shaft is connected to the torque shift fork section for transmission. The sector plate is fixed on the rotating shaft and is used to trigger a micro switch inside the torque controller. The micro switch is electrically connected to the terminal block.

[0012] In some embodiments of this utility model, the housing is further provided with an electrical control unit, which is electrically connected to the stroke controller, the torque controller and the terminal block respectively.

[0013] In some embodiments of this utility model, the electrical control unit includes an MCU and an I / O interface. The MCU receives signals from the stroke controller and the torque controller through the I / O interface and is connected to the terminal block through the I / O interface.

[0014] In some embodiments of this utility model, the housing and the cover are detachably connected by bolts, and the inner wall of the housing is provided with a bearing seat for positioning the stroke intermediate gear and the stroke input gear.

[0015] In some embodiments of this utility model, the material of the stroke transfer gear and the stroke input gear is 45 steel, and the gear tooth surface is provided with a quenching layer.

[0016] In some embodiments of this utility model, the terminal block is provided with multiple terminals, the layout of which is consistent with the interface terminal layout of Denso, and they are respectively electrically connected to the microswitches of the stroke controller and the torque controller.

[0017] The beneficial effects of this utility model are:

[0018] Compared to traditional methods, this technical solution replaces traditional friction plate transmissions or complex linkage mechanisms by setting up a shift fork and gear transmission structure (stroke rotation gear and stroke input gear), reducing wear on transmission components and improving the transmission reliability and accuracy of stroke control. The transmission connection between the torque controller and the shift fork replaces rigid welding or complex hinge structures, making torque transmission response more sensitive and reducing the risk of damage to the connection structure due to frequent stress. Furthermore, the stroke control component and torque control component are integrated into the housing, resulting in a compact overall layout. When installed with the electrical system, multiple calibrations are not required, simplifying the installation process. The stroke and torque signals can also be optimized to further enhance control stability, thereby improving the overall safety and applicability of the device when used with the electrical system. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a cross-sectional view of the present invention.

[0021] In the diagram: 1. Housing; 2. Housing cover; 3. Shift fork; 4. Stroke rotation gear; 5. Stroke input gear; 6. Stroke controller; 7. Terminal block; 8. Torque controller; 9. Electrical control unit. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example

[0023] This embodiment aims to clarify the core and most basic mechanical structure and electrical signal conversion principle of the linkage control device, which constitutes the basic framework for realizing stroke and torque monitoring.

[0024] like Figure 1 As shown, a stroke and torque linkage control device for use with DENSO includes a housing 1 and a cover 2, with the cover 2 covering the housing 1. The housing 1 contains a shift fork 3, a stroke intermediate gear 4, a stroke input gear 5, a stroke controller 6, a terminal block 7, and a torque controller 8. One end of the shift fork 3 is used to connect to the stroke lead-out mechanism or torque lead-out mechanism of DENSO, and the other end is driven to the stroke intermediate gear 4 or the torque controller 8. The stroke input gear 5 is driven to the stroke controller 6, and both the stroke controller 6 and the torque controller 8 are electrically connected to the terminal block 7.

[0025] Optionally, the housing 1 and the cover 2 are detachably sealed together by multiple bolts, and the mating surfaces are equipped with sealing gaskets to ensure that the internal components are protected from external environmental factors such as dust and moisture, achieving a certain protection level (such as IP67). Furthermore, the housing 1 has multiple bearing seats and positioning bosses cast or machined inside for precise and stable installation of various gears, controllers, and other components, such as bearing seats for positioning the intermediate rotation gear 4 and the input gear 5.

[0026] Optionally, the shift fork 3, as a key input element, has one end (such as through a fork or connecting hole) engaged or connected to a specific lead-out component (such as a shift block or worm gear) on the output shaft of an external electric actuator (i.e., Denso); its other end is divided into two functional parts, which are connected to the internal stroke transmission chain and torque transmission chain respectively.

[0027] In the stroke transmission chain, the stroke portion of the shift fork 3 drives the stroke intermediate gear 4, which in turn meshes with the stroke input gear 5. The shaft of the stroke input gear 5 is rigidly fixedly connected to the input shaft of the stroke controller 6 through a keyway or spline. In the torque transmission chain, the torque portion of the shift fork 3 acts directly or indirectly on the torque controller 8.

[0028] It should be noted that the signal output terminals (usually the terminals of microswitches) inside the stroke controller 6 and torque controller 8 are connected to the corresponding terminals on the terminal block 7 via wires. The terminal block 7 serves as the electrical interface of the device, used for signal exchange with the main control system of an external electrical unit.

[0029] When this linkage control device is in operation, the external electrical unit actuates, its output shaft rotates, and the lead-out mechanism linked to the output shaft actuates the shift fork 3, causing the shift fork 3 to swing or rotate. Then, the motion of the shift fork 3 is transmitted to two transmission paths: stroke and torque. This design integrates the stroke and torque detection functions into a compact housing, resulting in a centralized structure that facilitates installation and maintenance. Furthermore, through the shift fork 3 and the terminal block 7, it achieves rapid mechanical and electrical compatibility with various standard electrical units, demonstrating strong versatility.

[0030] In some embodiments of this utility model, the stroke controller 6 includes a counting gear and a cam. The counting gear is connected to the stroke input gear 5 for transmission. The cam is fixed coaxially with the counting gear. The cam is used to trigger a micro switch inside the stroke controller 6. The micro switch is electrically connected to the terminal block 7.

[0031] Optionally, the stroke input gear 5 meshes directly with the counting gear inside the stroke controller 6, or through a set of reduction gears. The cam and the counting gear are fixed by sharing a central shaft and by a key or integral molding, ensuring synchronous rotation. The micro switch is precisely mounted beside the rotation path of the cam, and its contact arm is just touched by the convex or concave part of the cam. During operation, the output shaft of the electric motor rotates, driving the stroke input gear 5 to rotate through the shift fork 3 and the stroke intermediate gear 4; the stroke input gear 5 drives the counting gear to rotate according to a preset transmission ratio, which precisely corresponds to the total stroke of the electric motor from fully closed to fully open; the cam, coaxial with the counting gear, rotates accordingly. When the electric motor reaches the preset open or closed end position, a specific contour (convex point) on the cam will press down or release the contact arm of the micro switch, causing the internal contacts of the micro switch to change on / off, generating a switching signal. This signal is transmitted to the terminal block 7 through a wire, notifying the external main control system that "the end of the stroke has been reached," thereby cutting off the motor power and achieving precise positioning.

[0032] For example, the cam can be designed as an adjustable multi-plate structure, allowing users to set multiple different intermediate travel points without disassembly. The microswitch can be replaced with a Hall effect sensor or a photoelectric sensor to achieve contactless triggering, further improving lifespan and response speed.

[0033] In some embodiments of this invention, the torque controller 8 includes a rotating shaft and a sector plate. The rotating shaft is connected to a torque fork section, and the sector plate is fixed to the rotating shaft. The sector plate is used to trigger a micro switch within the torque controller 8, which is electrically connected to the terminal block 7. The torque controller 8 typically contains a set of preload springs (such as coil springs or disc springs). The torque fork section of the fork 3 acts on a lever connected to the rotating shaft. During normal operation, the preload of the springs keeps the lever and the rotating shaft in their initial positions. The sector plate is securely fixed to the rotating shaft. The micro switch is installed near the swing limit position of the sector plate.

[0034] During normal operation in this embodiment, the torque output by the electric motor is less than the resistance torque of the valve and other loads. The force transmitted by the shift fork 3 is insufficient to overcome the preload of the spring inside the torque controller 8, and the rotating shaft and the sector plate remain stationary. However, when the valve jams or closes / opens to the mechanical dead point, the resistance torque on the output shaft increases sharply. This excessive torque is transmitted to the shift fork 3 through the torque extraction mechanism inside the electric motor (such as the axial movement of the worm gear). The torque fork section of the shift fork 3 overcomes the force of the preload spring, pushes the lever, and causes a small angular displacement of the rotating shaft. The sector plate fixed on the rotating shaft swings accordingly, and its edge triggers the adjacent micro switch. The micro switch closes or opens, generating an over-torque signal, which is sent to the main control system through the terminal block 7 to immediately cut off the motor power supply and protect the motor and mechanical structure from damage due to overload. Example

[0035] Based on Example 1, this embodiment focuses on optimizing the structure and materials of the stroke transmission chain, aiming to provide higher transmission accuracy, stability and service life.

[0036] In some embodiments of this utility model, the shift fork 3 includes a stroke shift fork section and a torque shift fork section. The stroke shift fork section meshes with the stroke intermediate gear 4, the stroke intermediate gear 4 meshes with the stroke input gear 5, and the stroke input gear 5 is fixedly connected to the input shaft of the stroke controller 6. There are three stroke intermediate gears 4, which mesh sequentially, and a transmission chain is formed between the stroke shift fork section and the stroke input gear 5.

[0037] In this embodiment, the shift fork 3 is designed as an integrated multi-functional component, with its stroke shift fork section being a sector gear structure or a lever. It first meshes with the first stroke intermediate gear 4a, then gear 4a meshes with the second stroke intermediate gear 4b, gear 4b continues to mesh with the third stroke intermediate gear 4c, and finally, gear 4c meshes with the stroke input gear 5. These three intermediate gears are all mounted on the inner wall of the housing 1 via their respective pins and bearing seats, forming a "Z"-shaped or linear transmission sequence. By employing multiple gears in precise meshing, compared to chains or long connecting rods, the cumulative backlash and elastic deformation during transmission can be significantly reduced, thereby greatly improving the response speed and positioning accuracy of stroke control. Furthermore, by adjusting the number and position of the intermediate gears, the transmission path can be flexibly arranged within the limited space of the housing 1, bypassing other components and optimizing the utilization of internal space.

[0038] For example, synchronous belt drives can also be used. The advantages are low noise and no need for lubrication, but their load-bearing capacity and rigidity are not as good as gears. Alternatively, planetary gear systems can be used, which are more compact and have a wider range of transmission ratios, but are more expensive and have higher assembly complexity.

[0039] In some embodiments of this utility model, the intermediate rotation gear 4 and the input gear 5 are both made of 45 steel, and the gear tooth surfaces are provided with a hardened layer. The blanks of the intermediate rotation gear 4 (including 4a, 4b, 4c) and the input gear 5 are made of high-quality 45 carbon structural steel. After forging, normalizing, and machining, the gear tooth surfaces are subjected to high-frequency induction hardening. After hardening, a hardened layer with a depth of about 0.8-1.5mm is formed on the tooth surface, and its surface hardness can reach HRC50-58, while the gear core still maintains good toughness. When the gears mesh, the high-hardness tooth surface can effectively resist contact stress and frictional wear, preventing the tooth profile from being damaged. The softer internal core can absorb the impact load generated during transmission, preventing the gear from brittle fracture.

[0040] In this embodiment, the process is as follows: Denso starts up -> the output shaft rotates -> the stroke fork segment of the shift fork 3 swings -> three high-strength, wear-resistant stroke intermediate gears (4a, 4b, 4c) are sequentially driven to precisely mesh and transmit power -> finally drive the stroke input gear 5 -> the stroke controller 6 is activated, ultimately achieving high-precision, low-wear stroke positioning.

[0041] For example, for more demanding applications, alloy structural steels such as 20CrMnTi can be selected and carburized and quenched to obtain higher surface hardness and better core toughness.

[0042] Example 3:

[0043] Based on the mechanical structure of Embodiment 1 or 2, this embodiment introduces a microprocessor control unit (electrical control unit 9), upgrading the device from a simple electromechanical signal generator into an intelligent controller with logic judgment, signal processing and communication capabilities.

[0044] In some embodiments of this utility model, the housing 1 is further provided with an electrical control unit 9, which is electrically connected to the stroke controller 6, the torque controller 8, and the terminal block 7. The electrical control unit 9 includes an MCU and an I / O interface. The MCU receives signals from the stroke controller 6 and the torque controller 8 through the I / O interface and is connected to the terminal block 7 through the I / O interface.

[0045] The electrical control unit 9 is a separate printed circuit board (PCB) mounted inside the housing 1, away from the mechanical moving parts. The microswitches in the stroke controller 6 and torque controller 8 no longer output direct control signals, but instead serve as input signals, connected to the input / output I / O pins of the microcontroller (MCU) on the electrical control unit 9. The other I / O pins of the MCU are connected to corresponding terminals on the terminal block 7, used to output processed control signals or status signals to the external ESO main controller. The PCB also integrates power supply circuits, filtering circuits, and protection circuits; these are common circuit structures in the field and require no creative effort.

[0046] During operation in this embodiment, the travel or torque microswitch actuates, generating a high / low level transition signal. This signal is sent to the MCU's I / O input port. The firmware program running inside the MCU detects this level change and makes a judgment based on preset logic: for example, if the "closed position travel signal" and the "closed position over-torque signal" appear simultaneously or successively within a very short time, the MCU can determine that it is "normally closed to the end"; if only the "closed position over-torque signal" is received but the travel end point has not been reached, it is determined that there is a "valve jamming fault". Based on the judgment result, the MCU outputs specific control commands to the terminal block 7 through its I / O output port, such as "emergency stop", "reverse a short distance and try again", "send fault code", etc., rather than simply on / off switching.

[0047] In this embodiment, the electrical control unit 9 achieves a leap from passive signal triggering to active logic judgment. This enables more complex control strategies, such as anti-jitter processing (software filtering), intelligent identification of motor stall protection, and fault diagnosis. Furthermore, by modifying the MCU firmware, new functions or adjustments to the control logic can be easily added without modifying the hardware. For example, advanced functions such as runtime monitoring, action count statistics, and communication interfaces can be added.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The above description is merely an example and illustration of the present utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.

Claims

1. A stroke and torque linkage control device for use with electrical components, comprising a housing and a cover, wherein the cover is fitted onto the housing; characterized in that, The housing contains a shift fork, a stroke intermediate gear, a stroke input gear, a stroke controller, a terminal block, and a torque controller. One end of the shift fork is connected to the stroke lead-out mechanism or torque lead-out mechanism of the electric motor, and the other end is connected to the stroke intermediate gear or the torque controller. The stroke input gear is connected to the stroke controller. Both the stroke controller and the torque controller are electrically connected to the terminal block.

2. The stroke and torque linkage control device for use with electrical equipment according to claim 1, characterized in that, The shift fork includes a stroke shift fork section and a torque shift fork section. The stroke shift fork section meshes with the stroke intermediate gear, the stroke intermediate gear meshes with the stroke input gear, and the stroke input gear is fixedly connected to the input shaft of the stroke controller.

3. The stroke and torque linkage control device for use with electrical equipment according to claim 2, characterized in that, The number of intermediate rotation gears is three, and the three intermediate rotation gears mesh in sequence, and a transmission chain is formed between the stroke shift fork section and the stroke input gear.

4. The stroke and torque linkage control device for use with electrical equipment according to claim 1, characterized in that, The stroke controller includes a counting gear and a cam. The counting gear is connected to the stroke input gear. The cam is fixed coaxially with the counting gear. The cam is used to trigger a micro switch inside the stroke controller. The micro switch is electrically connected to the terminal block.

5. The stroke and torque linkage control device for use with electrical equipment according to claim 2, characterized in that, The torque controller includes a rotating shaft and a sector plate. The rotating shaft is connected to the torque shift fork section for transmission. The sector plate is fixed on the rotating shaft and is used to trigger a micro switch inside the torque controller. The micro switch is electrically connected to the terminal block.

6. The stroke and torque linkage control device for use with electrical equipment according to claim 1, characterized in that, The enclosure is also equipped with an electrical control unit, which is electrically connected to the stroke controller, the torque controller and the terminal block.

7. The stroke and torque linkage control device for use with electrical equipment according to claim 6, characterized in that, The electrical control unit includes an MCU and an I / O interface. The MCU receives signals from the stroke controller and the torque controller through the I / O interface and is connected to the terminal block through the I / O interface.

8. The stroke and torque linkage control device for use with electrical equipment according to claim 1, characterized in that, The housing and the cover are detachably connected by bolts, and the inner wall of the housing is provided with a bearing seat for positioning the stroke intermediate gear and the stroke input gear.

9. A stroke and torque linkage control device for use with electrical equipment according to claim 2, characterized in that, Both the intermediate rotation gear and the input gear are made of 45 steel, and the gear teeth have a hardened layer.

10. A stroke and torque linkage control device for use with electrical equipment according to claim 1, characterized in that, The terminal block is provided with multiple terminals, the layout of which is consistent with the interface terminal layout of Denso, and each terminal is electrically connected to the micro switch of the stroke controller and the torque controller respectively.

Images