Electromagnetic actuator with facilitated monitoring of position state

Abstract

The utility model discloses an electromagnetic actuator convenient to monitor position state, including shell, electromagnetic coil subassembly, drive sleeve and annular cover, electromagnetic coil subassembly is embedded in the inside cavity of shell, annular cover is fixed on the right port of shell, drive sleeve coaxial sliding is connected in the center hole inside of shell, electromagnetic coil subassembly and annular cover three, drive sleeve inside plug -in installation has position monitoring sleeve, and position monitoring sleeve left end has the monitoring board of radial extension protruding to the left side surface outside shell, or position monitoring sleeve right -hand member has the monitoring board of radial extension protruding to the right side surface outside annular cover. When using, install position sensor on the equipment with the position corresponding to monitoring board, ensure that the position sensor installed on the equipment avoids the axial movement stroke track of drive sleeve, and at the same time, ensure that the position sensor and monitoring board are good in correspondence, thereby ensuring the accuracy of position sensor monitoring drive sleeve axial displacement and position state result data.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic actuator technology, specifically to an electromagnetic actuator that facilitates monitoring of position status. Background Technology

[0002] An electromagnetic clutch is a friction clutch that uses electromagnetic force for remote control. It relies on the switching of an energized coil to control the clutch's engagement and disengagement, and is widely used in machine tools and mechanical transmission systems. Currently, the engagement and disengagement control of electromagnetic clutches is mostly accomplished through electromagnetic actuators. An electromagnetic actuator is a relatively special type of actuator that achieves precise control of the electromagnetic field strength and direction by accurately and rapidly controlling the current in the coil, thereby enabling precise control of the target object's position.

[0003] Most existing electromagnetic actuators rely on additional position sensors corresponding to their internal drive sleeves to achieve real-time monitoring of the drive sleeve's axial displacement and position. However, since the drive sleeve is axially slidably mounted inside the central cavity of the electromagnetic actuator body, and the actuator is used on equipment (such as a gearbox housing), the installation position of the position sensor is often limited. To prevent the position sensor from interfering with the axial movement of the drive sleeve, it is typically mounted on one side of the drive sleeve's axial movement trajectory. This results in poor correspondence between the position sensor and the drive sleeve, thus limiting the accuracy of the position sensor's monitoring of the drive sleeve's axial displacement and position. Therefore, this invention proposes an electromagnetic actuator that facilitates position monitoring, aiming to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide an electromagnetic actuator that facilitates position monitoring. This is achieved by installing a position monitoring sleeve inside the drive sleeve, with a monitoring plate extending radially from the left or right end of the position monitoring sleeve to the corresponding end of the electromagnetic actuator. During installation and use, only the position sensor needs to be installed on the device at the position corresponding to the monitoring plate. This solves the problem of limited installation position of the position sensor on the device and ensures that the position sensor installed on the device avoids the axial movement trajectory of the drive sleeve. Furthermore, it ensures good correspondence between the position sensor and the monitoring plate, thereby improving the accuracy of the position sensor's monitoring of the axial displacement and position status of the drive sleeve. The overall structure is ingeniously and reasonably designed, with high feasibility for fabrication and implementation, and strong practicality.

[0005] To achieve the above objectives, the technical solution of this utility model is to design an electromagnetic actuator that facilitates position monitoring, comprising a housing, an electromagnetic coil assembly, a drive sleeve, and an annular cover. The electromagnetic coil assembly is embedded in the internal cavity of the housing, and the annular cover is fixed to the right port of the housing. The drive sleeve is coaxially and slidably connected to the central hole of the housing, the electromagnetic coil assembly, and the annular cover. A position monitoring sleeve is inserted and installed inside the drive sleeve. The left end of the position monitoring sleeve has a monitoring plate that extends radially to the outside of the left side of the housing, or the right end of the position monitoring sleeve has a monitoring plate that extends radially to the outside of the right side of the annular cover.

[0006] This utility model discloses an electromagnetic actuator that facilitates position monitoring. A position monitoring sleeve is installed inside the drive sleeve, and a monitoring plate extends radially from the left or right end of the position monitoring sleeve to the corresponding end of the electromagnetic actuator. During installation and use, only the position sensor needs to be installed on the device at the position corresponding to the monitoring plate. This solves the problem of limited installation position of the position sensor on the device and ensures that the position sensor installed on the device avoids the axial movement trajectory of the drive sleeve. Furthermore, it ensures good correspondence between the position sensor and the monitoring plate, thereby improving the accuracy of the position sensor's monitoring of the axial displacement and position status of the drive sleeve. The overall structure is ingeniously and reasonably designed, with high feasibility for fabrication and implementation, and strong practicality.

[0007] A preferred technical solution is that the position monitoring sleeve includes a second annular insertion section, and an annular disc is coaxially and vertically fixed at the left end of the second annular insertion section. The second annular insertion section is interference-fitted to the left end of the internal cavity of the drive sleeve. The annular disc is located on the outer left side of the outer shell. One end of the monitoring plate is fixed on the outer periphery of the annular disc, and the monitoring plate is parallel to the left side of the outer shell. The inner periphery of the annular disc has a mounting sleeve that extends coaxially into the interior of the drive sleeve. An anti-rotation pin is radially fixed on the outer peripheral side of the outer shell. The position monitoring sleeve features a clever and reasonable structural design. The monitoring plate fixed on the position monitoring sleeve is parallel to the left side of the outer shell, thus ensuring that the axial length of the electromagnetic actuator of this invention is almost not increased compared to traditional electromagnetic actuators. This makes the electromagnetic actuator of this invention highly adaptable during installation and use. The mounting sleeve inside the position monitoring sleeve improves the ease of assembly of the electromagnetic actuator with shaft-like parts on the equipment during installation and use, while also ensuring high overall structural strength and rigidity of the position monitoring sleeve. During installation and use, the anti-rotation pin cooperates with the anti-rotation component on the equipment, effectively preventing the electromagnetic actuator from rotating or shifting during later use, thereby ensuring the durability and accuracy of the position sensor's monitoring of the axial displacement and position status data of the drive sleeve.

[0008] A further preferred technical solution is that the electromagnetic coil assembly includes a winding and a plastic coating layer covering the outside of the winding. A lead-out component extending from the winding passes sequentially through the plastic coating layer and slots on the outer shell to extend to the outside of the outer shell. The electromagnetic coil assembly, composed of a winding and a plastic coating layer located on the outer surface of the winding, features an ingenious structural design and simple manufacturing process. The plastic coating layer significantly reduces the overall volume of the electromagnetic coil assembly compared to the coil frame, and the electromagnetic coil assembly can be independently manufactured as a single component, thus ensuring rapid assembly of the electromagnetic actuator of this invention. The lead-out component on the winding extends through slots on the outer shell to the outside of the electromagnetic actuator, ensuring high efficiency and convenience when connecting external electrical components during installation and use of the electromagnetic actuator of this invention.

[0009] A further preferred technical solution is that the plastic coating layer has a protrusion on the outside of the root of the cable outlet assembly, and the protrusion is correspondingly embedded in the slot on the outer shell, and the free end of the cable outlet assembly is provided with a plug-in.

[0010] An L-shaped cable tray is fixedly mounted on the outer periphery of the outer casing. The L-shaped cable tray comprises two integrally formed plates. Plate one is fixed to the root of the anti-rotation pin via an interference fit through a mounting hole at its free end. Plate two extends radially outward from the outer casing. Plate one has an L-shaped slot corresponding to the slotted hole, and the cable exit assembly is threaded and secured within the L-shaped slot. The cable exit assembly's free end has a plug-in connector that allows for quick insertion and connection with electrical components, further ensuring the high efficiency of the electromagnetic actuator when external electrical components are connected. The L-shaped cable tray's structure is ingeniously and rationally designed, providing both restraint and protection for the cable exit assembly, effectively preventing root breakage due to external forces.

[0011] A further preferred technical solution is that the electromagnetic coil assembly includes a winding and a plastic coating layer covering the outside of the winding. An integrally formed insertion groove extending vertically to the right is formed on the plastic coating layer. The winding has insertion feet extending into the insertion groove. The insertion groove passes through a notch on the outer periphery of the annular cover and extends to the outside of the right side of the annular cover. The electromagnetic coil assembly consists of a winding and a plastic coating layer located on the outer surface of the winding. The structure is ingeniously designed and simple to manufacture. The plastic coating layer significantly reduces the overall volume of the electromagnetic coil assembly compared to the coil frame, and the electromagnetic coil assembly can be independently manufactured as a single component, thus ensuring rapid assembly of the electromagnetic actuator of this invention. The integrally formed insertion groove extending to the outside on the plastic coating layer ensures efficient and convenient connection and mating when external electrical components are connected during installation and use of the electromagnetic actuator of this invention.

[0012] A further preferred technical solution is that the outer peripheral side of the free end of the insertion slot is provided with several circumferential grooves, and a sealing ring is embedded inside the circumferential grooves. When the electromagnetic actuator of this utility model is installed and used, the insertion slot engages with the connector on the external electrical component. The sealing ring improves the sealing and firmness of the engagement between the insertion slot and the connector, thereby ensuring a long-lasting and stable electrical connection between the electromagnetic coil assembly and the external electrical component.

[0013] A further preferred technical solution includes a support sleeve. The left side of the annular cover has a bushing extending into the internal cavity of the outer shell. The right end of the electromagnetic coil assembly is sleeved and fixed to the bushing. The left end of the inner circumferential side of the bushing has a second annular stepped groove. The right end of the support sleeve is interference-fitted into the second annular stepped groove, and the inner circumferential side of the support sleeve is flush with the inner circumferential side of the right end of the bushing. Corresponding through-hole oil guide grooves are formed on the inner circumferential side of the support sleeve and the inner circumferential side of the right end of the bushing. The drive sleeve is coaxially and slidably connected to the cavities inside the bushing and the support sleeve. The electromagnetic coil assembly is sleeved and fixed to the bushing. The electromagnetic coil assembly is sleeved and installed on the bushing of the annular cover, while the support sleeve provides support for the bushing. Compared to traditional electromagnetic actuators, this greatly simplifies the internal structure, reduces material usage, and significantly lowers the manufacturing cost of the electromagnetic actuator of this invention.

[0014] A further preferred technical solution includes: the left end of the outer peripheral side of the drive sleeve has an annular eave and an annular insertion section one located to the left of the annular eave; the inner peripheral side of the annular insertion section one and the left end of the inner peripheral side of the drive sleeve have an annular stepped groove one; the outer shell includes an annular ring and an annular base plate extending radially from the left end of the annular ring inwards; and the outer diameter of the annular insertion section one is less than the inner diameter of the annular base plate and less than the outer diameter of the annular eave; the right end of the outer peripheral side of the annular insertion section two has an annular stepped groove three; the annular insertion section two is interference-fitted into the annular stepped groove one; the annular insertion section one is correspondingly embedded into the annular stepped groove three; when the drive sleeve is in the left movement limit position, the annular eave abuts against the annular base plate; when the drive sleeve is in the right movement limit position, the annular eave abuts against the left edge of the support sleeve; the right end of the inner peripheral side of the annular ring has an annular countersunk groove; the outer peripheral edge of the annular cover is interference-fitted into the annular countersunk groove. The annular eaves and the annular base plate form a limiting structure one for limiting the left side of the drive sleeve to its limit position, and the annular eaves and the left edge of the support sleeve form a limiting structure two for limiting the right side of the drive sleeve to its limit position. The limiting structure one and the limiting structure two achieve precise limiting of the drive sleeve when it moves in the left and right axial directions, ensuring the responsiveness of the electromagnetic actuator of this utility model when switching between the two states of engagement and disengagement.

[0015] A further preferred technical solution is that the support sleeve is a stainless steel stamped part, the position monitoring sleeve is an aluminum die-cast part, and the monitoring plate is made of steel, with one end of the monitoring plate die-cast and fixed to the position monitoring sleeve. The support sleeve is a stamped part, which has a simple, efficient, and low-cost manufacturing process, suitable for large-scale production; the method of machining and fixing the monitoring plate on the position monitoring sleeve is simple, ensuring the smooth preparation and implementation of the electromagnetic actuator of this utility model.

[0016] A further preferred technical solution is that a positioning pin extending vertically to the left is fixedly provided on the annular base plate, and the positioning pin is fitted with a clearance fit through a through hole in the monitoring plate. When the electromagnetic actuator of this invention switches between engaged and disengaged states, the monitoring plate, fixedly connected to the drive sleeve, moves left and right along the positioning pin through the through hole, effectively preventing relative rotation of the drive sleeve relative to the outer shell. This ensures that the monitoring plate and the position sensor installed on the equipment always maintain a corresponding state, further ensuring the accuracy of the position sensor's feedback on the axial displacement and position status detection information of the drive sleeve.

[0017] The advantages and beneficial effects of this utility model are as follows:

[0018] 1. This utility model discloses an electromagnetic actuator that facilitates position monitoring. By installing a position monitoring sleeve inside the drive sleeve, and having a monitoring plate that extends radially to the outer side of the corresponding end of the electromagnetic actuator at the left or right end of the position monitoring sleeve, during installation and use, it is only necessary to install the position sensor on the device at the position corresponding to the monitoring plate. This solves the problem of limited installation position of the position sensor on the device and ensures that the position sensor installed on the device avoids the axial movement trajectory of the drive sleeve. On the other hand, it ensures good correspondence between the position sensor and the monitoring plate, thereby improving the accuracy of the position sensor in monitoring the axial displacement and position status of the drive sleeve. The overall structure is ingeniously and reasonably designed, with high feasibility for manufacturing and implementation, and strong practicality.

[0019] 2. The position monitoring sleeve has a clever and reasonable structural design. The monitoring plate fixed on the position monitoring sleeve is parallel to the left side of the outer shell, so that the axial length of the electromagnetic actuator of this utility model is almost not increased compared with the traditional electromagnetic actuator, thus making the electromagnetic actuator of this utility model adaptable during installation and use. The mounting sleeve inside the position monitoring sleeve improves the ease of assembly of the electromagnetic actuator of this utility model with shaft parts on the equipment during installation and use, while also ensuring high overall structural strength and rigidity of the position monitoring sleeve. During installation and use, the anti-rotation pin cooperates with the anti-rotation component on the equipment, thereby effectively preventing the electromagnetic actuator from rotating and shifting during later use, thus ensuring the durability of the accuracy of the position sensor monitoring the axial displacement and position status data of the drive sleeve.

[0020] 3. The electromagnetic coil assembly consists of a winding and a plastic coating layer located on the outer surface of the winding. The structure is ingeniously designed and easy to manufacture. The plastic coating layer significantly reduces the overall volume of the electromagnetic coil assembly compared to the coil frame. Furthermore, the electromagnetic coil assembly can be independently manufactured as a single accessory, thereby ensuring that the electromagnetic actuator of this invention can be quickly assembled. The lead-out components on the winding extend through slots in the outer shell to the outside of the electromagnetic actuator, or the plug-in slots on the plastic coating layer are integrally formed and extend to the outside, ensuring the high efficiency and convenience of connecting external electrical components when installing and using the electromagnetic actuator of this invention.

[0021] 4. The plug-in at the free end of the outgoing wire assembly allows for quick connection and interlocking with electrical components, further ensuring the high efficiency of the electromagnetic actuator when connected to external electrical components during installation and use. The L-shaped wire harness plate has a clever and reasonable structural design, which restrains and protects the outgoing wire assembly, effectively preventing the root of the outgoing wire assembly from breaking due to external forces.

[0022] 5. The outer peripheral side of the free end of the plug slot is provided with several circumferential grooves, and a sealing ring is embedded in the circumferential groove. When the electromagnetic actuator of this utility model is installed and used, the plug slot is plugged into the connector on the external electrical component. The sealing ring improves the sealing and firmness of the plug slot and the connector when they are plugged in, thereby ensuring that the electromagnetic coil assembly and the external electrical component have a long-lasting and stable electrical connection.

[0023] 6. The electromagnetic coil assembly is sleeved and installed on the bushing on the annular cover, and the support sleeve supports the bushing. Compared with the traditional electromagnetic actuator, the internal structure is greatly simplified, the amount of material used is reduced, and the processing and manufacturing cost of the electromagnetic actuator of this utility model is significantly reduced.

[0024] 7. The annular eaves and the annular base plate form a limiting structure one for limiting the left side of the drive sleeve to its limit position, and the annular eaves and the left edge of the support sleeve form a limiting structure two for limiting the right side of the drive sleeve to its limit position. The limiting structure one and the limiting structure two achieve precise limiting of the drive sleeve when it moves in the left and right axial directions, ensuring the responsiveness of the electromagnetic actuator of this utility model when switching between the two states of engagement and disengagement.

[0025] 8. A positioning pin extending vertically to the left is fixedly provided on the annular base plate, and the positioning pin is fitted with a clearance fit through the through hole in the monitoring plate. When the electromagnetic actuator of this utility model switches between engaged and disengaged states, the monitoring plate, which is fixedly connected to the drive sleeve, moves left and right along the positioning pin through the through hole. This effectively prevents the drive sleeve from rotating relative to the outer shell, ensuring that the monitoring plate and the position sensor installed on the equipment always maintain a corresponding state, further ensuring the accuracy of the position sensor's feedback on the axial displacement and position status detection information of the drive sleeve. Attached Figure Description

[0026] Figure 1 This is a left front perspective perspective view of an electromagnetic actuator for easy monitoring of position status in Embodiment 1;

[0027] Figure 2 This is a perspective view from the right front side of an electromagnetic actuator for easy monitoring of position status in Embodiment 1;

[0028] Figure 3 This is a longitudinal sectional view along the axial centerline of an electromagnetic actuator for easy monitoring of position status in Embodiment 1;

[0029] Figure 4 yes Figure 3 A magnified view of a section at point S in the middle;

[0030] Figure 5 This is an exploded view of an electromagnetic actuator for easy monitoring of position status in Embodiment 1;

[0031] Figure 6 It is a 3D diagram showing the assembly relationship of the outer shell, anti-rotation pin, and L-shaped cable tray.

[0032] Figure 7 This is a 3D view of the left side of the position monitoring sleeve;

[0033] Figure 8 This is a left front perspective perspective view of an electromagnetic actuator for easy monitoring of position status in Embodiment 2;

[0034] Figure 9 This is a perspective view from the right front side of an electromagnetic actuator in Embodiment 2, which is designed to facilitate monitoring of position status.

[0035] Figure 10 This is a longitudinal sectional view along the axial centerline of an electromagnetic actuator for easy monitoring of position status in Embodiment 2;

[0036] Figure 11 yes Figure 10 A magnified view of the area at point T.

[0037] In the diagram: 1. Outer shell; 2. Electromagnetic coil assembly; 3. Drive sleeve; 4. Support sleeve; 5. Annular cover; 6. Position monitoring sleeve; 7. Anti-rotation pin; 8. L-shaped cable tray; 9. Oil guide groove; 10. Insertion groove; 11. Sealing ring; 1-1. Annular ring; 1-1a. Annular countersunk groove; 1-2. Annular base plate; 1-3. Slot; 1-4. Positioning pin; 2-1. Winding; 2-1a. Insertion pin; 2-2. Plastic coating layer; 2-2a. Protrusion; 2-3. Outlet cable assembly Components; 2-3a, and plug-in; 3-1, annular plug section one; 3-2, annular step groove one; 3-3, annular eaves; 5-1, bushing; 5-2, annular step groove two; 5-3, notch groove; 6-1, annular plug section two; 6-1a, annular step groove three; 6-2, annular disc; 6-3, monitoring plate; 6-3a, through hole; 6-4, mounting sleeve; 8-1, plate one; 8-1a, L-shaped slot; 8-2, plate two; 10-1, circumferential groove. Detailed Implementation

[0038] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0039] Example 1

[0040] like Figures 1-7 As shown, an electromagnetic actuator for easy monitoring of position status includes a housing 1, an electromagnetic coil assembly 2, a drive sleeve 3, and an annular cover 5. The electromagnetic coil assembly 2 is embedded in the internal cavity of the housing 1. The annular cover 5 is fixed to the right port of the housing 1. The drive sleeve 3 is coaxially slidably connected to the central hole of the housing 1, the electromagnetic coil assembly 2, and the annular cover 5. A position monitoring sleeve 6 is inserted and installed inside the drive sleeve 3. The left end of the position monitoring sleeve 6 has a monitoring plate 6-3 that extends radially to the outside of the left side of the housing 1, or the right end of the position monitoring sleeve 6 has a monitoring plate 6-3 that extends radially to the outside of the right side of the annular cover 5.

[0041] Preferably, the position monitoring sleeve 6 includes an annular insertion section 6-1, with an annular disc 6-2 coaxially and vertically fixed at the left end of the annular insertion section 6-1. The annular insertion section 6-1 is interference-fitted into the left end of the internal cavity of the drive sleeve 3. The annular disc 6-2 is located on the outer side of the left side of the outer shell 1. One end of the monitoring plate 6-3 is fixed on the outer periphery of the annular disc 6-2, and the monitoring plate 6-3 is parallel to the left side of the outer shell 1. The inner periphery of the annular disc 6-2 has a mounting sleeve 6-4 extending coaxially into the drive sleeve 3. An anti-rotation pin 7 is radially fixed on the outer peripheral side of the outer shell 1.

[0042] More preferably, the electromagnetic coil assembly 2 includes a winding 2-1 and a plastic coating layer 2-2 covering the outside of the winding 2-1, and the lead wire assembly 2-3 extending from the winding 2-1 passes through the plastic coating layer 2-2 and the slot 1-3 on the outer shell 1 to extend to the outside of the outer shell 1.

[0043] More preferably, the plastic coating layer 2-2 has a protrusion 2-2a that is plastic coated on the root of the cable outlet assembly 2-3, and the protrusion 2-2a is correspondingly embedded in the slot 1-3 on the outer shell 1, and the free end of the cable outlet assembly 2-3 is provided with a plug 2-3a;

[0044] An L-shaped cable tray 8 is fixedly provided on the outer peripheral side of the outer shell 1. The L-shaped cable tray 8 includes an integrally formed plate body 8-1 and a plate body 8-2. The plate body 8-1 is fixed to the root of the anti-rotation pin 7 by an interference fit through a mounting hole opened at its free end. The plate body 8-2 extends radially outside the outer shell 1. The plate body 8-1 has an L-shaped slot 8-1a corresponding to the slot 1-3. The cable outlet assembly 2-3 passes through and is bound inside the L-shaped slot 8-1a.

[0045] More preferably, it also includes a support sleeve 4. The left side of the annular cover 5 has a bushing 5-1 extending into the internal cavity of the outer shell 1. The right end of the electromagnetic coil assembly 2 is sleeved and fixed on the bushing 5-1. The left end of the inner circumferential side of the bushing 5-1 has an annular stepped groove 5-2. The right end of the support sleeve 4 is interference-fitted into the annular stepped groove 5-2. The inner circumferential side of the support sleeve 4 is flush with the inner circumferential side of the right end of the bushing 5-1. Corresponding through oil guide grooves 9 are opened on the inner circumferential side of the support sleeve 4 and the inner circumferential side of the right end of the bushing 5-1. The drive sleeve 3 is coaxially slidably connected to the cavity inside the bushing 5-1 and the support sleeve 4. The electromagnetic coil assembly 2 is sleeved and fixed on the bushing 5-1.

[0046] More preferably, the left end of the outer peripheral side of the drive sleeve 3 has an annular eave 3-3 and an annular insertion section 3-1 located to the left of the annular eave 3-3. The inner peripheral side of the annular insertion section 3-1 and the left end of the inner peripheral side of the drive sleeve 3 have an annular stepped groove 3-2. The outer shell 1 includes an annular ring 1-1 and an annular base plate 1-2 extending radially from the left end of the annular ring 1-1 inwards. The outer diameter of the annular insertion section 3-1 is less than the inner diameter of the annular base plate 1-2 and less than the outer diameter of the annular eave 3-3. The outer peripheral side of the second 6-1 has an annular stepped groove 6-1a at the right end. The second 6-1 is interference-fitted into the annular stepped groove 3-2. The first 3-1 is correspondingly embedded in the annular stepped groove 6-1a. When the drive sleeve 3 is in the left limit position, the annular eaves 3-3 abuts against the annular base plate 1-2. When the drive sleeve 3 is in the right limit position, the annular eaves 3-3 abuts against the left edge of the support sleeve 4.

[0047] The right end of the inner circumferential side of the annular ring 1-1 has an annular countersunk groove 1-1a, and the outer periphery of the annular cover 5 is interference-fitted into the annular countersunk groove 1-1a.

[0048] More preferably, the support sleeve 4 is a stainless steel stamping part, the position monitoring sleeve 6 is an aluminum die-casting part, and the monitoring plate 6-3 is made of steel, with one end of the monitoring plate 6-3 being die-cast and fixed on the position monitoring sleeve 6.

[0049] More preferably, a positioning pin 1-4 extending vertically to the left is fixed on the annular base plate 1-2, and the positioning pin 1-4 is fitted into the through hole 6-3a on the monitoring plate 6-3 with clearance.

[0050] Example 2

[0051] like Figures 8-11 As shown, an electromagnetic actuator that facilitates position monitoring differs from the electromagnetic actuator that facilitates position monitoring in Embodiment 1 in that: the electromagnetic coil assembly 2 includes a winding 2-1 and a plastic coating layer 2-2 covering the outside of the winding 2-1. The plastic coating layer 2-2 has an integrally formed insertion groove 10 extending vertically to the right. The winding 2-1 has an insertion foot 2-1a extending into the insertion groove 10. The insertion groove 10 passes through the notch 5-3 on the outer periphery of the annular cover 5 and extends to the outside of the right side of the annular cover 5.

[0052] Preferably, the outer peripheral side of the free end of the insertion groove 10 is provided with a plurality of annular grooves 10-1, and a sealing ring 11 is embedded inside the annular grooves 10-1.

[0053] This utility model discloses an electromagnetic actuator that facilitates position monitoring. A position monitoring sleeve is installed inside the drive sleeve, and a monitoring plate extends radially from the left or right end of the position monitoring sleeve to the corresponding end of the electromagnetic actuator. During installation and use, only the position sensor needs to be installed on the device at the position corresponding to the monitoring plate. This solves the problem of limited installation position of the position sensor on the device and ensures that the position sensor installed on the device avoids the axial movement trajectory of the drive sleeve. Furthermore, it ensures good correspondence between the position sensor and the monitoring plate, thereby improving the accuracy of the position sensor's monitoring of the axial displacement and position status of the drive sleeve. The overall structure is ingeniously and reasonably designed, with high feasibility for fabrication and implementation, and strong practicality.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electromagnetic actuator for easy monitoring of position status, comprising a housing (1), an electromagnetic coil assembly (2), a drive sleeve (3), and an annular cover (5), wherein the electromagnetic coil assembly (2) is embedded in the internal cavity of the housing (1), the annular cover (5) is fixed to the right port of the housing (1), and the drive sleeve (3) is coaxially slidably inserted into the central hole of the housing (1), the electromagnetic coil assembly (2), and the annular cover (5), characterized in that, The drive sleeve (3) is internally fitted with a position monitoring sleeve (6). The left end of the position monitoring sleeve (6) has a monitoring plate (6-3) that extends radially to the outside of the left side of the outer shell (1), or the right end of the position monitoring sleeve (6) has a monitoring plate (6-3) that extends radially to the outside of the right side of the annular cover (5).

2. The electromagnetic actuator for easy monitoring of position status as described in claim 1, characterized in that, The position monitoring sleeve (6) includes an annular plug section two (6-1). An annular disc (6-2) is coaxially and vertically fixed at the left end of the annular plug section two (6-1). The annular plug section two (6-1) is interference-fitted to the left end of the internal cavity of the drive sleeve (3). The annular disc (6-2) is located on the outside of the left side of the outer shell (1). One end of the monitoring plate (6-3) is fixed on the outer periphery of the annular disc (6-2), and the monitoring plate (6-3) is parallel to the left side of the outer shell (1). The inner periphery of the annular disc (6-2) has a mounting sleeve (6-4) that extends coaxially into the interior of the drive sleeve (3). An anti-rotation pin (7) is radially fixed on the outer peripheral side of the outer shell (1).

3. The electromagnetic actuator for easy monitoring of position status as described in claim 2, characterized in that, The electromagnetic coil assembly (2) includes a winding (2-1) and a plastic coating layer (2-2) covering the outside of the winding (2-1). The lead-out assembly (2-3) extending from the winding (2-1) passes through the plastic coating layer (2-2) and the slot (1-3) on the outer shell (1) to the outside of the outer shell (1).

4. The electromagnetic actuator for easy monitoring of position status as described in claim 3, characterized in that, The plastic coating layer (2-2) has a protrusion (2-2a) on the outside of the lead-out assembly (2-3) and the protrusion (2-2a) is correspondingly embedded in the slot (1-3) on the outer shell (1). The free end of the lead-out assembly (2-3) is provided with a plug (2-3a). An L-shaped cable tray (8) is fixed on the outer periphery of the outer casing (1). The L-shaped cable tray (8) includes an integrally formed plate body one (8-1) and a plate body two (8-2). The plate body one (8-1) is fixed to the root of the anti-rotation pin (7) by interference fitting through a mounting hole opened at its free end. The plate body two (8-2) extends radially outside the outer casing (1). The plate body one (8-1) has an L-shaped slot (8-1a) corresponding to the slot (1-3). The cable outlet assembly (2-3) passes through and is bound inside the L-shaped slot (8-1a).

5. The electromagnetic actuator for easy monitoring of position status as described in claim 2, characterized in that, The electromagnetic coil assembly (2) includes a winding (2-1) and a plastic coating layer (2-2) covering the outside of the winding (2-1). The plastic coating layer (2-2) has an integrally formed insertion groove (10) extending vertically to the right. The winding (2-1) has an insertion pin (2-1a) extending into the insertion groove (10). The insertion groove (10) passes through the notch (5-3) on the outer periphery of the annular cover (5) and extends to the outside of the right side of the annular cover (5).

6. The electromagnetic actuator for easy monitoring of position status as described in claim 5, characterized in that, The outer peripheral side of the free end of the insertion groove (10) is provided with several circumferential grooves (10-1), and a sealing ring (11) is embedded inside the circumferential groove (10-1).

7. The electromagnetic actuator for easy monitoring of position status as described in claim 2, characterized in that, It also includes a support sleeve (4), the left side of the annular cover (5) has a bushing (5-1) extending into the inner cavity of the outer shell (1), the right end of the electromagnetic coil assembly (2) is sleeved and fixed on the bushing (5-1), the left end of the inner circumferential side of the bushing (5-1) has an annular stepped groove (5-2), the right end of the support sleeve (4) is interference-fitted into the annular stepped groove (5-2), and the inner circumferential side of the support sleeve (4) is flush with the inner circumferential side of the right end of the bushing (5-1). Corresponding through oil guide grooves (9) are opened on the inner circumferential side of the support sleeve (4) and the inner circumferential side of the right end of the bushing (5-1). The drive sleeve (3) is coaxially slidably connected in the cavity inside the bushing (5-1) and the support sleeve (4), and the electromagnetic coil assembly (2) is sleeved and fixed on the bushing (5-1).

8. The electromagnetic actuator for easy monitoring of position status as described in claim 7, characterized in that, The drive sleeve (3) has an annular eave (3-3) on the left end of its outer peripheral side and an annular insertion section (3-1) located to the left of the annular eave (3-3). The inner peripheral side of the annular insertion section (3-1) and the left end of the inner peripheral side of the drive sleeve (3) have an annular stepped groove (3-2). The outer shell (1) includes an annular ring (1-1) and an annular base plate (1-2) extending radially from the left end of the annular ring (1-1) toward its interior. The outer diameter of the annular insertion section (3-1) is less than the inner diameter of the annular base plate (1-2) and less than the outer diameter of the annular eave (3-3). The outer peripheral side of the second insertion section (6-1) has an annular stepped groove three (6-1a) at the right end. The second annular insertion section (6-1) is interference-fitted into the annular stepped groove one (3-2). The first annular insertion section (3-1) is correspondingly embedded in the annular stepped groove three (6-1a). When the drive sleeve (3) is in the left movement limit position, the annular eaves (3-3) abuts against the annular base plate (1-2). When the drive sleeve (3) is in the right movement limit position, the annular eaves (3-3) abuts against the left edge of the support sleeve (4). The right end of the inner circumferential side of the annular ring (1-1) has an annular countersunk groove (1-1a), and the outer periphery of the annular cover (5) is interference-fitted into the annular countersunk groove (1-1a).

9. The electromagnetic actuator for easy monitoring of position status as described in claim 8, characterized in that, The support sleeve (4) is a stainless steel stamping part, the position monitoring sleeve (6) is an aluminum die casting part, the monitoring plate (6-3) is steel, and one end of the monitoring plate (6-3) is die casting and fixed on the position monitoring sleeve (6).

10. The electromagnetic actuator for easy monitoring of position status as described in claim 9, characterized in that, A positioning pin (1-4) extending vertically to the left is fixed on the annular base plate (1-2), and the positioning pin (1-4) is fitted into the through hole (6-3a) on the monitoring plate (6-3) with clearance.

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