Actuator module for a fluid valve and fluid valve comprising the module

Abstract

An actuator module (10) for a fluid valve (100) comprising a shaft (11) and a rotor (12) arranged within a containment housing (13), wherein said containment housing (13) comprises a first end (13a) for connection to a valve housing (20) and a second end (13b) arranged opposite to the first end (13a), and wherein said shaft (11) is rotatably mounted at said first end (13a) of the containment housing (13) by a first bearing (14) and rotatably mounted at said second end (13b) of the containment housing (13) by a second bearing (15), wherein said first bearing (14) and said second bearing (15) are each configured as a plain bearing, wherein said first bearing (14) forms a combined radial-axial bearing and said second bearing (15) forms a radial bearing.

Description

Technical Field

[0001] This application relates to an actuator module for a fluid valve, particularly arranged in the refrigerant circuit of an electric vehicle. Furthermore, this application also relates to a fluid valve incorporating such an actuator module, particularly suitable for a fluid valve in the refrigerant circuit of an electric vehicle. Background Technology

[0002] An actuator device for a valve, driven based on a stator / rotor principle, is known. To this end, a rotor assembly is provided, comprising a rotor shaft; a rotor disposed thereon and configured to rotate therewith; a rotor sleeve in which the rotor and rotor shaft are housed at least in certain areas; and a stator assembly configured to surround the outside of the rotor sleeve. To ensure sufficient efficiency of the actuator motor, precise alignment of the rotor assembly relative to the stator assembly must be guaranteed. The rotor shaft and the rotor thereon are rotatably mounted within the rotor sleeve. A ball bearing is typically arranged to radially and axially secure the rotor shaft within the rotor sleeve.

[0003] One drawback of this type of ball bearing is its relatively high inherent weight, high cost, and requirement for significant installation space. Precise alignment between the rotor and stator assemblies is also typically difficult to achieve due to the high workload involved in assembly. Because ball bearings require substantial installation space, maintaining a clear gap between the rotor sleeve and stator is challenging, making it difficult to reduce rotor size, which in turn reduces motor efficiency. Summary of the Invention

[0004] Therefore, the purpose of this application is to provide an actuator module belonging to the technical field mentioned in the foregoing background art, which at least partially overcomes the shortcomings of the prior art. The purpose of this application is to provide an improved concept for an actuator module. Specifically, the purpose of this application is to improve the efficiency of the actuator module while providing a compact and space-saving actuator module.

[0005] Overall, the objective of this application is achieved through the subject matter of independent claim 1 and appendix claim 16. Advantageous improvements are detailed in the dependent claims.

[0006] More specifically, the objective of this application is achieved by an actuator module for a fluid valve according to the subject matter of independent claim 1. For this purpose, the actuator module includes a shaft and a rotor disposed within a containment shroud. The containment shroud includes a first end for connection to a valve housing and a second end disposed opposite the first end. The shaft is rotatably mounted at the first end of the containment shroud via a first bearing and rotatably mounted at the second end of the containment shroud via a second bearing. Both the first and second bearings are configured as sliding bearings. The first bearing forms a combined radial-axial bearing, and the second bearing forms a radial bearing.

[0007] In this paper, radial-axial bearings are understood to mean bearings configured to absorb both radial and axial forces. Therefore, a radial bearing is understood to mean a bearing configured to absorb radial forces. However, radial bearings are not configured to absorb axial forces.

[0008] According to this application, both the first bearing and the second bearing are configured as sliding bearings, wherein the first bearing is configured as a radial-axial bearing and the second bearing is configured as a purely radial bearing.

[0009] In this paper, for example, the technical advantages achieved include that sliding bearings are lighter and require less space than commonly used ball bearings. Furthermore, their production is more cost-effective. The small space requirement and low weight allow the actuator module to be configured in a manner that keeps the air gap between the rotor and the enclosure extremely small, thereby improving the efficiency of the actuator module.

[0010] Furthermore, the actuator module can be assembled easily and quickly. In particular, inserting the shaft into the second bearing, configured as a radial bearing, ensures that the components are centered, thus simplifying the alignment of the rotor assembly within the enclosure. This allows for extremely precise rotor mounting in both the radial and axial directions.

[0011] The actuator module according to this application is constructed with modular sub-components, making individual sub-components easy to assemble, maintain, repair, and / or replace. This reduces assembly and maintenance time and related costs.

[0012] Furthermore, the actuator module according to this application can be simply inserted into the valve as a whole and can be connected to the valve. This facilitates the assembly process.

[0013] According to an advantageous design of the actuator module, the second bearing and the enclosure are configured as an integral, particularly a monolithic, inseparable structure. This provides technical advantages, such as reducing the number of individual components. This makes the actuator module easier to assemble and results in higher overall cost-effectiveness.

[0014] Advantageously, the enclosure is made of a suitable metal such as stainless steel or a suitable metal alloy, which has the property of weakening the magnetic field to a very small extent or not at all. In this case, aluminum is preferred. Alternatively, plastic materials or plastic composites with good anti-friction properties may also be considered for the production of the enclosure. For example, PA, POM and / or rigid PVC are all suitable for this purpose.

[0015] According to an advantageous design of the actuator module, the second bearing is formed by a protrusion, particularly a cylindrical protrusion, at the second end of the enclosure. This provides, for example, the following technical advantages: the alignment of the shaft within the enclosure, and therefore the alignment of the rotor within the enclosure, can be accomplished in an extremely precise and simple manner. Specifically, the protrusion (preferably a cylindrical protrusion) is arranged such that its central axis is coaxial with the longitudinal axis of the shaft, wherein the cross-sections of the enclosure and the protrusion are symmetrically configured along this central axis, and particularly, the enclosure and the protrusion are configured for rotational symmetry about this central axis. Therefore, the protrusion's function as a bearing results in the automatic centering of the shaft and rotor within the enclosure.

[0016] Alternatively, it is conceivable that, without using a protrusion, the second end of the enclosure is configured as a closed base, particularly a flat base, and a cylindrical wall protruding inward from the base along the direction of the first end of the enclosure is configured as an integral structure with the enclosure. This cylindrical wall functions as a second bearing configured as a radial bearing. The second bearing therefore includes a protective cover structure.

[0017] According to an advantageous design of the actuator module, the first bearing is formed by a sliding bearing bushing, which is fixedly connected, and in particular welded, to the enclosure. Specifically, the sliding bearing bushing is arranged at the first end of the enclosure and has a dual function: the sliding bearing bushing forms a combined radial-axial bearing with a shaft and encloses the enclosure at the first end. Thus, a fully functional enclosed rotor assembly is formed. For example, this modular construction achieves the technical advantage that the actuator module can be easily handled, especially as a single unit. In other words, the actuator module can be arranged as a single unit on the associated fluid valve. This facilitates the alignment and precise positioning of the actuator module on the fluid valve.

[0018] The sliding bearing bushing is advantageously formed of the same material as the enclosure, or at least the materials of the sliding bearing bushing and the enclosure are formed to be compatible with each other, for example, for securing them together, particularly by welding. For example, the sliding bearing bushing will be made of a metal such as aluminum or a metal alloy such as stainless steel. Alternatively, it may be considered to manufacture the sliding bearing bushing using rigid plastic materials or plastic composites, which have good anti-friction properties. For example, PA, POM, and / or rigid PVC are all suitable for this purpose.

[0019] According to an advantageous design of this actuator module, the sliding bearing bushing is configured as a one-piece structure, particularly as a deep-drawn element. This brings technical advantages such as the ability to manufacture the sliding bearing bushing in a precise and simple manner.

[0020] According to an advantageous design of the actuator module, the sliding bearing bushing includes a engagement element that supports the shaft in the axial direction in a form-fitting manner. This provides technical advantages such as axial fixation of the shaft being achieved through the engagement element of the sliding bearing bushing, and radial fixation of the shaft being achieved through the remaining area of ​​the sliding bearing bushing. Therefore, extremely precise rotor mounting can be provided in both the radial and axial directions in a simple manner.

[0021] According to an advantageous design of this actuator module, the engagement element engages with the contour of the shaft. This achieves advantages such as improved axial bearing performance through engagement of the engagement element with the shaft contour, and simplified rotor assembly assembly. In particular, the sliding bearing bushing can be simply pushed onto the shaft until the engagement element engages with the contour provided on the shaft.

[0022] Specifically, the profile can be configured circumferentially. For example, a circumferential profile can be configured as an annular groove. The cross-section of the annular groove in a sectional view can be configured, for example, rectangular, rectangular with rounded corners, semi-circular, or trapezoidal, particularly to form an undercut with which the engaging element of the sliding bearing bushing can engage. In principle, any form is acceptable, as long as sufficient axial fixation of the shaft is applied when engaging with the engaging element of the sliding bearing bushing.

[0023] According to an advantageous design of the actuator module, the engaging element forms a snap-fit ​​or latching connection with the contour. This achieves technical advantages such as enabling precise and secure rotor mounting in the radial and axial directions using relatively simple techniques, and keeping the assembly workload low or even further reduced compared to mounting ball bearings.

[0024] According to an advantageous design of the actuator module, the engagement element engages with the profile of the shaft from the second end along the direction of the first end.

[0025] In other words, viewed from the perspective of the sliding bearing bushing, the engaging element extends from one end of the sliding bearing bushing (which is located near the second end of the enclosure) along the first end of the enclosure and engages with the profile on the shaft there. This provides, for example, a technical advantage: when a rotor unit or actuator module is connected to the valve body of the fluid valve, the assembly forces acting on the shaft, at least substantially in the axial direction of the shaft in the direction of the second end, can be better absorbed. In other words, a more robust connection can be established between the shaft and the sliding bearing bushing, which is configured to have lower sensitivity to any acting assembly forces.

[0026] According to an advantageous design of the actuator module, the engagement element at least partially supports the shaft in the axial direction. Therefore, precise mounting of the rotor in both the axial and radial directions can be advantageously ensured.

[0027] According to an advantageous design of the actuator module, the sliding bearing bushing comprises at least two engaging elements, particularly arranged opposite to each other; or at least three engaging elements, particularly arranged equidistant from each other. This has, for example, the technical advantage that forces acting in the axial direction can be absorbed in a distributed manner by multiple engaging elements. Therefore, each individual engaging element bears a lower load. The preferred equidistant arrangement also has the technical advantage of achieving a uniform distribution of weight and force through uniform arrangement.

[0028] Alternatively, the sliding bearing bushing may also comprise only a single engaging element, which is configured to be relatively wide. Specifically, the width of the engaging element (measured in angular dimensions) ranges from 45° to 180°, preferably from 60° to 120°. This offers the advantage of simplifying the manufacture of the sliding bearing bushing.

[0029] According to an advantageous design of the actuator module, the rotor includes an outer housing containing a magnetizable or magnetizable material. This provides a technical advantage that components (particularly the rotor core arranged within the outer housing) do not need to be made of a magnetizable or magnetizable material. Instead, the rotor core can be manufactured using lighter and more advantageous materials, particularly plastics or plastic composites. Therefore, the weight of the actuator module can be reduced without adversely affecting performance or efficiency.

[0030] According to an advantageous design of the actuator module, the magnetizable material or magnetizable material comprises or is composed of neodymium.

[0031] Alternatively, magnetizable or magnetizable materials that are not rare earth elements can also be considered. For example, simple magnetizable shells or magnetizable tube segments can be used, produced by pressing or sintering. Thus, the rotor core can function independently of the shell geometry, allowing for the separation of functions between the shell and the rotor core, and enabling expansion independent of their respective material choices.

[0032] According to an advantageous design of the actuator module, the magnetizable or magnetizable material is embedded in, or particularly mixed with, a plastic material. Therefore, the weight of the rotor can be advantageously kept low.

[0033] Alternatively, the outer casing can be formed using sintered ferritic magnetizable material or a magnetizable material. This offers the advantage of eliminating the need for plastic adhesives, thereby improving rotor efficiency.

[0034] According to an advantageous design of the actuator module, the shaft is made of a plastic material (particularly a non-magnetic plastic material). This provides, for example, the following technical advantages, which can further reduce the weight of the actuator module.

[0035] Furthermore, it is possible, for example, to form the actuator module at the first end of the enclosure as a standardized interface, configured to enable universal connection with different valves. In other words, the same actuator module can be connected to different valves in the same way. Therefore, a high degree of operational flexibility can be advantageously provided.

[0036] According to another advantageous configuration of the actuator module, the rotor housing is configured to have an internal recess at a first end near the enclosure, the internal recess being configured to accommodate the first bearing in at least certain areas. Specifically, the shape of the internal recess of the housing is designed such that at least one area of ​​the sliding bearing bushing can be accommodated within the recess of the housing.

[0037] The objective of this application is also achieved by a fluid valve comprising the actuator module described in any of the preceding claims.

[0038] In this paper, the advantages mentioned above related to the actuator module also apply to the fluid valve accordingly.

[0039] Further advantageous embodiments and combinations of features of this application can be seen from the following detailed description and all patent claims. Attached Figure Description

[0040] According to this application, the different and exemplary features described above can be combined with each other, provided that it is technically feasible and reasonable. Other features, advantages, and implementations of this application may be further illustrated by the following description of exemplary embodiments in conjunction with the accompanying drawings.

[0041] The accompanying drawings, used to explain exemplary embodiments, illustrate the following: Figure 1 A schematic cross-sectional view of the fluid valve according to this application; Figure 2 A schematic diagram of the actuator module according to this application; Figure 3a This is a schematic diagram of a sliding bearing bushing according to the first embodiment of this application; Figure 3b This is a schematic cross-sectional view of the sliding bearing bushing according to the first embodiment in the installed state. Figure 4a This is a schematic diagram of a sliding bearing bushing according to the second embodiment of this application; Figure 4b This is a schematic cross-sectional view of the sliding bearing bushing according to the second embodiment in the installed state; Figure 5a A schematic diagram of a sliding bearing bushing according to the third embodiment of this application; and Figure 5b This is a schematic cross-sectional view of the sliding bearing bushing according to the third embodiment in the installed state. Detailed Implementation

[0042] Figure 1 A schematic diagram of a fluid valve 100 for blocking and / or controlling fluid flow according to this application is shown. The fluid valve 100 includes a valve body 50 configured to switch between a fully closed position and a fully open position within a fluid housing 30. In the fully closed position, the valve body 50 abuts against or extends into a sealing seat 32 of the fluid housing 30, such that a first inlet and / or outlet opening is completely closed, thereby preventing fluid flow through the fluid housing 30. In the fully open position, the valve body 50 is removed from or retracted from the sealing seat 32 to such an extent that the first inlet and / or outlet opening is at least partially exposed, thereby allowing fluid flow through the fluid housing 30.

[0043] The valve body 50 is driven by the actuator module 10. The actuator module 10 includes a rotor 12 disposed within a housing 13 and a stator winding disposed around the housing 13. Figure 1(Not shown in the image). The enclosure (13) is configured to be at least substantially pot-shaped. In particular, it is configured to be open at a first end 13a. At a second end 13b opposite to the first end 13a, the enclosure 13 forms a closed base. This facilitates the assembly of the rotor unit of the actuator module 10.

[0044] The rotor 12 and shaft 11 are arranged within an enclosure. The shaft 11 is configured to be rotatably fixed to the rotor 12 and performs rotational motion together with the rotor 12. The rotor 12 may include or consist of the following: a rotor core 12a and a rotor housing 12b arranged around the rotor core 12a.

[0045] The rotor core 12a can be configured to be integrally molded with the shaft 11. Advantageously, the rotor core 12a and the shaft 11 are manufactured together as a single injection-molded component. Particularly suitable materials are rigid, and especially more cost-effective, plastics or plastic composites.

[0046] The rotor housing 12b may contain a magnetizable or magnetizable material, such as neodymium or another magnetizable or magnetizable material not based on rare earth elements. For example, the magnetizable or magnetizable material may be at least partially embedded in a plastic material, particularly completely embedded therein. In other words, the rotor housing 12b may be made of a plastic material in which the magnetizable or magnetizable material is embedded, or the rotor housing 12b may also be made of a plastic material mixed with the magnetizable or magnetizable material.

[0047] Alternatively, the rotor housing 12b may be produced using sintered ferritic magnetizable or magnetizable materials, rather than magnetizable or magnetic materials embedded in plastic.

[0048] The shaft 11 includes a first end and a second end opposite to the first end. To reduce weight, the shaft 11 may be configured to be hollow in at least a portion of its area from the second end, with a groove extending in the axial direction L in this area, wherein the shaft 11 is configured to be closed at its first end, i.e., not hollow.

[0049] The shaft 11 is mounted in the enclosure 13 of the actuator module 10 at its first end via a first bearing 14, and at its second end via a second bearing 15. Here, the first bearing 14 is configured as a combined radial-axial bearing, and the second bearing is configured as a radial bearing. Both the first bearing 14 and the second bearing 15 are designed as sliding bearings.

[0050] The second bearing 15 can be configured to form an integral structure with the enclosure 13, particularly an integral, inseparable structure.

[0051] The protrusion 13c forming the second bearing 15 can be disposed in the central region of the base of the enclosure 13. The protrusion 13c extends outward from the base of the enclosure 13, i.e., in the direction opposite to the first end 13a of the enclosure 13. The protrusion 13c can be cylindrical. Specifically, the enclosure 13 is configured such that the protrusion 13c forms a radial bearing for the shaft 11. In other words, the protrusion 13c at the second end 13b of the enclosure 13 accommodates the second end of the shaft 11 and provides radial support to it.

[0052] The first end 13a of the enclosure 13 can be closed by a sliding bearing bushing 16. In this case, the sliding bearing bushing 16 forms a first bearing 14 for the first side of the shaft 11.

[0053] After the shaft 11 and rotor 12 are inserted together into the enclosure 13, and in particular the second end of the shaft 11 is accommodated in a protrusion 13c at the second end 13b of the enclosure 13, the first end 13a of the enclosure 13 is closed by means of the sliding bearing bush 16. For this purpose, the sliding bearing bush 16 includes a central opening that is pushed against the first end of the shaft 11 and forms a radial bearing region.

[0054] Preferably, the area of ​​the shaft 11 covered by the sliding bearing bushing 16 is machined to achieve a smooth surface and good anti-friction properties, and is not configured to be hollow. The step created by machining the shaft 11 can also serve as the axial contact surface of the sliding bearing bushing 16, which is pushed onto the step to reach the shaft 11.

[0055] The sliding bearing bush 16 is shaped such that its outer peripheral surface is inserted into the first end 13a of the enclosure 13 in a form-fit manner and is fixedly connected (particularly flush with) to the enclosure 13. Preferably, the outer peripheral surfaces of the enclosure 13 and the sliding bearing bush 16 are welded together. The sliding bearing bush is configured to have at least a substantially stepped structure between the central opening and the outer peripheral surface.

[0056] On the first side of the shaft 11, a circumferential profile 11a is machined onto the shaft 11. For example, the profile 11a is configured as an annular groove. In this case, the annular groove is not limited to a semi-circular cross section. Triangular, at least basic rectangular, trapezoidal, and other cross sections can also be considered. However, more complex profiles 11a with one or more undercuts can also be formed.

[0057] The sliding bearing bushing 16 includes one or more engagement elements 16a in the region near the central opening, which are configured to engage with the circumferential profile 11a of the shaft 11. Therefore, the engagement elements 16a of the sliding bearing bushing 16 can also absorb forces acting in the axial direction L. Specifically, each engagement element 16a can be configured to support the shaft 11 in the axial direction in a form-fit manner. Thus, the sliding bearing bushing 16 achieves the function of a combined radial-axial bearing.

[0058] Each of the engagement elements 16a may include a locking element at its free end, which is configured to engage with the circumferential profile 11a of the shaft 11.

[0059] The sliding bearing bushing 16 can be advantageously configured as a deep-drawn component. At least one engaging element 16a is configured to be integrally formed with the sliding bearing bushing 16. For example, at least one engaging element 16a can be machined into a sliding bearing bushing blank, particularly a deep-drawn sliding bearing bushing blank, by a separation and forming manufacturing method. For example, the contour of the engaging element 16a can be machined into a deep-drawn sliding bearing bushing blank by cutting (particularly laser cutting), and the locking element can be formed at the free end of the engaging element 16a by a forming manufacturing step (e.g., bending).

[0060] At least one engaging element 16a of the sliding bearing bushing 16 is configured at least substantially as an engaging arm, its free end comprising a bent or buckled structure that engages with a circumferential profile 11a on the shaft 11. The free end of at least one engaging element 16a may also be configured as a barb type, hooking into the circumferential profile 11a, particularly where the circumferential profile 11a contains an undercut. Alternatively, a locking element located at the free end of at least one engaging element 16a may also be configured as a locking lug.

[0061] The enclosure 13, the rotor 12, the shaft 11, and / or the sliding bearing bush 16 (advantageously all of them) can be configured to be coaxially arranged. The enclosure 13 is advantageously configured such that the rotor 12, the shaft 11, and the sliding bearing bush 16 are completely arranged within the enclosure 13. Therefore, a compact actuator module 10 can be formed, with its overall axial length advantageously reduced.

[0062] The actuator module 10 can be configured to be universally attached to different valves and valve types. In particular, the first end of the shaft 11 forms an interface that can be universally connected to different drive elements of different valves. For connection to the relevant valve, the actuator module 10 can be inserted into and arranged in the valve body 50 or inserted into and arranged in a receiving space of the valve body 50, which is defined, for example, by a counterbore.

[0063] like Figure 1 As shown, the first end of the shaft 11 includes an interface through which the shaft 11 can be rotatably and permanently connected to the second end of the main shaft 40 of the fluid valve 100. In other words, when the actuator module 10 is inserted into the receiving space of the valve body 50 and the shaft 11 is rotatably coupled to the main shaft, the rotational motion of the shaft 11 is transmitted to the main shaft 40. For this purpose, the main shaft 40 is axially and radially mounted in the valve body 50 by ball bearings. At the first end opposite the second end, the main shaft 40 includes external threads.

[0064] The valve body 50 of the fluid valve 100 may be configured at least substantially as a hollow shaft having a first end and a second end opposite to the first end. In the installed state of the fluid valve 100, the second end of the valve body 50 is closer to the actuator module 10 than the first end of the valve body 50.

[0065] The openings in the valve housing 20 (through which the valve body 50 can be guided or actually guided) and / or the openings in the fluid housing 30 (through which the valve body can be guided or actually guided) include anti-rotation devices, such as pins or projections. A corresponding complementary configuration, such as a groove extending along the axial direction L of the valve body 50, is provided at the second end of the valve body 50, which engages with or is in an engaged state with the anti-rotation device.

[0066] An internal thread may be disposed in the opening of the valve body 50 and engaged with the external thread of the spindle 40. The combination of the external thread of the spindle 40 and the internal thread of the valve body 50, particularly with the anti-rotation device, forms a transmission unit that converts the pure rotational motion of the spindle 40 into the translational motion of the valve body 50, by means of which the valve body 50 can switch between a fully closed position and a fully open position.

[0067] The valve body 50 may include a first end that tapers in the direction of the sealing seat 32. In other words, the outer periphery of the first end of the valve body 50 tapers towards the first end, such that the valve body tapers along the valve seat 32. Figure 1 The directional translational movement of the actuator module 10, as shown, releases an annular gap through which fluid can flow, allowing fluid flow to occur between a first inlet and / or outlet opening and one or more radially arranged outlet and / or inlet openings. In the fully closed position, the valve body 50 penetrates the sealing seat 32 until the valve body 50 is pressed into the sealing seat 32 and an annular seal is formed.

[0068] Alternatively, the valve body 50 may also include different forms and configurations, as long as it can be switched between a fully closed position and a fully open position. Optionally, additional sealing elements may be provided on the sealing seat 32 or the valve body 50.

[0069] like Figure 1 As shown, a plurality of sealing elements are arranged between the valve body 50 and the fluid housing 30 to isolate the valve interior from the surrounding environment.

[0070] from Figure 1 As can be seen from the schematic diagram of the fluid valve 100, the fluid valve 100 is constructed in a modular manner. Therefore, it can be easily and quickly assembled, and individual components can be easily replaced or repaired. In particular, the actuator module 10 can be integrally connected to the valve body 50 and the spindle 40.

[0071] Figure 2 A schematic diagram of the actuator module 10 according to this application is shown. (In conjunction with...) Figure 1 The described features are also described in Figure 2 In this context, the descriptions correspond to these characteristics. Therefore, redundant descriptions will be omitted.

[0072] like Figure 2 As shown, the rotor housing 12b of the rotor 12 has an internal groove on a first side, which, in the installed state, corresponds to the first side 13a of the enclosure 13. The groove is used to accommodate the first bearing 14 of the shaft 11 in at least certain areas. The profile of the groove can be shaped at least substantially in such a way that it complements the outer profile of the sliding bearing bushing 16. In particular, at least some areas of the sliding bearing bushing 16 can be accommodated within the groove in the rotor housing 12b. Therefore, the overall axial length of the actuator module 10 can be advantageously limited, and an extremely compact actuator module 10 can be provided.

[0073] Figure 2 The sliding bearing bushing 16 shown is configured to be substantially stepped, specifically having: an outer peripheral surface that can be inserted into and fixedly connected to the enclosure in a form-fit manner, radial steps, and an inclined region that is inclined relative to the cylindrically arranged protrusion. The cylindrically arranged protrusion can form a central opening, which is configured to receive and support the shaft 11 in a form-fit manner.

[0074] Figure 2 A coupling element 16a is shown, which extends from the first end along an inclined region in the direction of the shaft 11 and includes a locking element in the form of a curved region at the free end, which engages with the circumferential profile 11a of the shaft 11.

[0075] Figure 2The first end of shaft 11 is shown. In relation to spindle 40 ( Figure 2 At the connection point (not shown), the latter includes two opposing blades. These blades are configured to form a shape-fitting rotational coupling for transmitting rotational motion of shaft 11 to main shaft 40.

[0076] like Figure 2 As shown, the shape of the first end of the actuator module 10 (where the sliding bearing bushing 16 is disposed) is designed to form a universal interface through which the actuator module 100 can be easily connected to the valve body 50. Therefore, the actuator module 10 according to this application can be coupled and connected to different valves in a simple and uncomplicated manner, especially without the need to adjust the connection point.

[0077] Figures 3 to 5 show the sliding bearing bushing 16 ( Figure 3a , 4a and 5a) or the first bearing 14 ( Figure 3b , 4b Different implementations of 5b).

[0078] Figure 3a A first embodiment of the sliding bearing bushing 16 is shown. The latter is configured in a stepped manner. The outer peripheral surface is configured to be fixedly attached to the inner peripheral surface of the enclosure 13 by form-fitting and, in particular, by material bonding.

[0079] A radial (annular) planar step extends inward from the outer peripheral surface; specifically, the step extends substantially from the outer radius of the sliding bearing bushing 16 to the first inner radius. In this document, the radial planar step is understood to represent the region forming the planar annular surface when viewed from the radial direction, wherein, in particular, the axial direction L corresponds to the normal direction of the radial planar step.

[0080] The inclined connecting region extends from a first inner radius to at least a second inner radius, which corresponds to the outer radius of shaft 11 plus the thickness of sliding bearing bush 16. The inclined connecting region connects a radially planar step to a protrusion that is at least substantially cylindrical, which can be inserted into shaft 11. The cylindrical protrusion forms a central opening in sliding bearing bush 16.

[0081] like Figure 3a As shown, two opposing meshing elements 16a are arranged in the inclined connection region and in the region of the cylindrical protrusion.

[0082] Each of the engagement elements 16a extends in the axial direction L from a first end (which is integrally connected to the sliding bearing bush 16 in an inclined region) to a second end (which is arranged in the region of the cylindrical protrusion), and in the installed state, this direction points to the second end of the shaft 11 or the second end 13b of the enclosure 13.

[0083] At the second end of the engaging element 16a, each engaging element 16a deforms to form a corresponding locking element, which is configured to engage with the circumferential profile 11a of the shaft 11. Specifically, each engaging element 16a may be bent such that its convex bent side engages with the circumferential profile 11a on the shaft 11. Alternatively, the engaging element 16a may also each include a locking geometry of different shapes at its free second end, such as a kink, locking lug, barb, etc.

[0084] Figure 3b The diagram shows the structure of shaft 11 with the first bearing 14 in the inserted state of the sliding bearing bushing 16. The first bearing 11 is a sliding bearing, configured as follows: Figure 3a The sliding bearing bushing 16 is shown. For this purpose, the sliding bearing bushing 16 is placed on the first end of the shaft 11. In this case, the outer peripheral surface of the sliding bearing bushing 16 is inserted into the enclosure 13 and connected to it in a form-fit manner (especially in a form-fit and material-bonded manner).

[0085] The first end of the shaft 11 is configured to be machined to provide a sliding surface for the first bearing 14. Furthermore, a circumferential profile 11a, which is an annular groove in the example shown, is provided in the machined area. Figure 3b The end of the groove in the shaft 11 extending axially in the direction L from the second end of the shaft 11 is also shown. In particular, the groove in the shaft 11 has a shape and length in the support point region of the first bearing 14 such that there is sufficient material for machining the sliding surface and for introducing the circumferential profile 11a. For example, the end of the groove in the shaft 11 can be configured to be at least substantially tapered.

[0086] The engaging element 16a engages, in particular, with the circumferential profile 11a of the shaft 11 via its locking element, thereby allowing the shaft 11 to be axially mounted in the sliding bearing bush 16. The shaft 11 can also be radially mounted in the sliding bearing bush 16 by being accommodated in a cylindrical protrusion within the bushing. Therefore, the first bearing 14 is a sliding bearing configured as a combined radial-axial bearing.

[0087] Figure 4a and 4bThe second embodiment of the sliding bearing bushing 16 is shown in both its uninstalled and installed states. In particular, the differences related to the sliding bearing bushing 16 described above will be discussed below. The remaining components are configured according to the above embodiment and will not be described again.

[0088] Compared to Figure 3a and 3b In a first embodiment of the sliding bearing bushing 16, the engaging element 16a extends from the second end of the sliding bearing bushing 16 to the first end of the sliding bearing bushing 16. In other words, according to a second embodiment, the first end of the engaging element 16a forms the free end of the engaging element 16a, and the second end of the engaging element 16a is integrally connected to the sliding bearing bushing 16.

[0089] Furthermore, the second embodiment of the sliding bearing bushing 16 differs from the first embodiment in that the connection area between its radial planar steps and cylindrical protrusions is also configured such that it is at least substantially cylindrical, wherein the diameter of the cylindrical connection area is larger than the diameter of the cylindrical protrusions.

[0090] Figure 4a A sliding bearing bushing 16 with three engaging elements 16a is shown. The second ends of each engaging element 16a are integrally connected to a cylindrical connecting region. The engaging elements 16a can be arranged equidistantly around the cylindrical connecting region. In the cylindrical connecting region, the engaging elements 16a are arranged such that their free first ends are bent inward along the direction of the shaft 11, such that the engaging elements can lock or engage with the circumferential profile 11a of the shaft 11 at their free first ends.

[0091] As described in the above embodiments, each of the engagement elements 16a includes a locking element at its free end. These can be formed according to the first embodiment. The shaft 11 can also be configured according to the above embodiments. As an alternative to the tapered end, a groove extending axially in the direction L from the second end of the shaft 11 can terminate in a planar region, such as... Figure 4b As shown.

[0092] As described in the above embodiments, according to the second embodiment, the cylindrical protrusion forms the central opening of the sliding bearing bushing 16.

[0093] Figure 4b The structure of the first bearing 14 of the shaft 11 according to the second embodiment in the inserted state of the sliding bearing bushing 16 is shown. The first bearing 11 is a sliding bearing, which is configured as follows: Figure 4aThe sliding bearing bushing 16 is shown. For this purpose, the sliding bearing bushing 16 is placed on the first end of the shaft 11. In this case, the outer peripheral surface of the sliding bearing bushing 16 is inserted into the enclosure 13 and fixedly connected to it by form-fitting (especially by form-fitting and material bonding).

[0094] Also according to the second embodiment, the engaging element 16a engages, in particular, with the circumferential profile 11a of the shaft 11 via its locking element, thereby allowing the shaft 11 to be axially mounted in the sliding bearing bush 16. The shaft 11 can be radially mounted in the sliding bearing bush 16 by being accommodated in a cylindrical protrusion within the bushing. Therefore, the first bearing 14 is a sliding bearing configured as a combined radial-axial bearing.

[0095] Figure 5a and 5b A third embodiment of the sliding bearing bushing 16 is shown in both its uninstalled and installed states. In particular, the differences related to the sliding bearing bushing 16 described above will be discussed below. The remaining components can be configured according to the above embodiment and will not be described again.

[0096] like Figure 5a As shown, the construction of the sliding bearing bushing 16 according to the third embodiment is different from the construction described in the first and / or second embodiments.

[0097] The sliding bearing bushing 16 according to the third embodiment further includes an outer peripheral surface at the first end, which can be received in the first end 13a of the enclosure 13 in a form-fit manner and can be connected thereto, particularly in a form-fit and material-bonded manner. In the third embodiment of the sliding bearing bushing, the radial planar step adjacent to the outer peripheral surface also extends inward; Unlike the first and second embodiments of the sliding bearing bushing 16, the connecting region adjacent to the radial planar step inward is configured as another step. In particular, the connecting region of the sliding bearing bushing 16 in the third embodiment includes a first region and a second region. The first region is configured as a generally cylindrical shape and extends in the axial direction L along the direction of the second end of the sliding bearing bushing 16 opposite to the first end. The second region radially adjacent to the first region is configured as a second radial (annular) planar step.

[0098] A cylindrical recess extends radially inward from the radially annular step of the second region along the direction of the first end of the sliding bearing bush 16. In other words, a section of the sliding bearing bush 16 formed by the connecting region and the cylindrical recess is configured such that it is at least substantially U-shaped in a radial half-sectional view. The second region of the connecting region formed by the second radial planar step corresponds to the second end of the sliding bearing bush 16 according to the third embodiment.

[0099] Similar to the cylindrical protrusion of the sliding bearing bush 16 in the first and second embodiments, the cylindrical recess of the sliding bearing bush 16 in the third embodiment forms a groove and a bearing for the first end of the shaft 11.

[0100] Similar to the cylindrical protrusions of the sliding bearing bush 16 in the first and second embodiments, the cylindrical recesses form the central opening of the sliding bearing bush 16 according to the third embodiment.

[0101] Three engaging elements 16a are further arranged to protrude inwardly from the cylindrical recess in the direction of the first end of the sliding bearing bushing 16. In other words, according to the third embodiment, the engaging element 16a is integrally connected to the cylindrical recess at its second end and extends to the free first end opposite the second end.

[0102] Each of the three engagement elements 16a includes a locking element located at its free end, similar to or corresponding to the engagement elements 16a in the first and second embodiments, which is configured to engage with the circumferential profile 11a of the shaft 11. In this case, the locking element may be an inwardly bent end, a bent or kinked area, a locking lug, a barb, etc.

[0103] The shaft 11 can also be configured according to the above embodiment. As an alternative to the tapered end, the groove extending axially in the direction L from the second end of the shaft 11 can also terminate in a planar region, such as... Figure 4b As shown.

[0104] Figure 5b The structure of the first bearing 14 of the shaft 11 according to the third embodiment is shown in the state where the sliding bearing bushing 16 is inserted. The first bearing 11 is a sliding bearing, and it is configured as follows: Figure 5a The sliding bearing bushing 16 is shown. For this purpose, the sliding bearing bushing 16 is placed on the first end of the shaft 11. In this case, the outer peripheral surface of the sliding bearing bushing 16 is inserted into the enclosure 13 and connected to it in a form-fit manner (especially in a form-fit and material-bonded manner).

[0105] Also according to the third embodiment, the engaging element 16a engages with the circumferential profile 11a of the shaft 11 via its locking element, thereby allowing the shaft 11 to be axially mounted in the sliding bearing bush 16. The shaft 11 can be radially mounted in the sliding bearing bush 16 by being received in the cylindrical recess of the sliding bearing bush 16. Therefore, the first bearing 14 is a sliding bearing configured as a combined radial-axial bearing.

[0106] The sliding bearing bushing 16 according to the first, second and third embodiments may also be configured with a different number of engagement elements 16a than those described above.

[0107] In particular, a sliding bearing bushing 16 comprising only one engaging element 16a may also be considered. In this case, the engaging element 16 is advantageously configured to be wider. For example, it may include a width of 45° to 180° (preferably 60° to 120°) as an angular dimension.

[0108] In the case of more than one engaging element 16a, they are preferably arranged equidistant from each other around the sliding bearing bush 16.

[0109] In the radial plane steps between the outer peripheral surface of the sliding bearing bush 16 and the connecting area in the above embodiment, one or more openings can be formed, especially openings evenly distributed on the circumference, so that fluid exchange can be realized.

[0110] The sliding bearing bushing 16 can be manufactured, for example, by deep drawing. The engaging element 16a can then be machined by separation and / or forming manufacturing methods.

[0111] Alternatively, the engaging elements 16a of the two embodiments described above can be combined in the sliding bearing bushing 16. For this purpose, the connection area between the radial planar steps and the cylindrical protrusions or recesses may optionally be adjusted accordingly, for example, by combining the connection areas of the respective embodiments. Particularly in the case of the combination of the engaging element 16a of the first embodiment with the engaging member 16a of the second or third embodiment, a particularly robust axial bearing can be produced, which is insensitive to the forces generated during the installation and connection of the actuator module 10 to the valve housing 20 and the spindle 40.

[0112] It should be noted that features of this application described with reference to various embodiments or variations, such as the types and configurations of the various components and their precise dimensions and spatial arrangements, may also exist in other embodiments unless otherwise stated or prohibited by technical reasons. Furthermore, not all features in the combination of the described embodiments must be implemented in the corresponding embodiments.

[0113] List of reference numerals

Claims

1. An actuator module (10) for a fluid valve (100) comprising a shaft (11) and a rotor (12) disposed within a housing (13), wherein the housing (13) comprises a first end (13a) for connection to a valve housing (20) and a second end (13b) disposed opposite to the first end (13a), and wherein the shaft (11) is rotatably mounted on the first end (13a) of the housing (13) via a first bearing (14) and rotatably mounted on the second end (13b) of the housing (13) via a second bearing (15). Its features The first bearing (14) and the second bearing (15) are each configured as a sliding bearing, wherein the first bearing (14) forms a combined radial-axial bearing and the second bearing (15) forms a radial bearing.

2. The actuator module (10) according to claim 1, characterized in that... The second bearing (15) is configured to form an integral structure with the enclosure (13), particularly an integral, inseparable structure.

3. The actuator module (10) according to claim 1 or 2, characterized in that... The second bearing (15) is formed by a protrusion, particularly a cylindrical protrusion (13c), at the second end (13b) of the enclosure (13).

4. The actuator module (10) according to any one of the preceding claims, characterized in that... The first bearing (14) is formed by a sliding bearing bushing (16), which is fixedly connected to, and in particular welded to, the enclosure (13).

5. The actuator module (100) according to claim 4, characterized in that... The sliding bearing bushing (16) is configured as an integral structure, and in particular as a deep-drawing element.

6. The actuator module (10) according to claim 4 or 5, characterized in that... The sliding bearing bushing (16) includes a engagement element (16a) that supports the shaft (11) in the axial direction in a form-fit manner.

7. The actuator module (10) according to claim 6, characterized in that... The engagement element (16a) engages with the contour (11a) of the shaft (11).

8. The actuator module (10) according to claim 7, characterized in that... The engaging element (16a) forms a snap-fit ​​or locking connection with the contour (11a).

9. The actuator module (10) according to claim 7 or 8, characterized in that... The engagement element (16a) engages with the profile (11a) of the shaft (11) from the second end (13b) along the direction of the first end (13a).

10. The actuator module (10) according to any one of claims 6-9, characterized in that... The coupling element (16a) supports the shaft (11) at least partially in the axial direction.

11. The actuator module (10) according to any one of claims 6-10, characterized in that... The sliding bearing bushing (16) comprises at least two engaging elements (16a), particularly arranged opposite to each other; or comprises at least three engaging elements (16a), particularly arranged equidistant from each other.

12. The actuator module (10) according to any one of the preceding claims, characterized in that... The rotor (12) includes an outer housing (12b), wherein the outer housing (12b) contains a magnetizable or magnetizable material.

13. The actuator module (10) according to claim 12, characterized in that... The magnetizable material or magnetizable material contains neodymium or is composed of neodymium.

14. The actuator module (10) according to claim 12 or 13, characterized in that... The magnetizable or magnetizable material is embedded in the plastic material, particularly mixed with the plastic material.

15. The actuator module (10) according to any one of the preceding claims, characterized in that... The shaft (11) is made of plastic material, particularly non-magnetic plastic material.

16. A fluid valve comprising an actuator module (10) according to any of the preceding claims.

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