Angular displacement sensor system and vacuum circuit breaker

Abstract

The utility model relates to an angular displacement sensor system and a vacuum circuit breaker. The angular displacement sensor system comprises a signal receiver, an extension block, a fixing sleeve and a magnetic field sensing element. The extension block is attached to the rotating member. The outer surface of the extension block is at least partially sleeved with the fixing sleeve, and the interior of the fixing sleeve is in transmission connection with the outer surface of the extension block; at least part of the fixing sleeve is connected with the rotating component. The magnetic field sensing element is connected to the extension block, the magnetic field sensing element is arranged opposite to the signal receiver after being fixed, and the central axis of the magnetic field sensing element and the central axis of the rotating component are collinear. When the rotating part rotates relative to the central axis of the rotating part, the fixing sleeve, the extension block and the magnetic field sensing element synchronously rotate along with the rotating part, the fixing sleeve ensures that the extension block and the magnetic field sensing element are stably connected to the rotating part in the rotating process, and position deviation is avoided; and the magnetic field sensing element is kept centered with the rotating part in the rotating process.

Description

Technical Field

[0001] This application relates to the field of sensor equipment technology, and in particular to an angular displacement sensor system and a vacuum circuit breaker. Background Technology

[0002] For angular displacement sensor systems, a magnetic field sensing element needs to be attached to the rotating component being measured, along with a signal receiver positioned opposite it. An electromagnetic coupling region is formed between the signal receiver and the magnetic field sensing element. As the magnetic field sensing element rotates with the rotating component, it cuts the magnetic field, generating an electrical signal. The signal receiver receives this signal and converts it to calculate the angular displacement of the rotating component. However, during the rotation of the magnetic field sensing element, it often becomes misaligned due to vibrations and wobbling of the rotating component, making it impossible to maintain alignment and thus affecting measurement accuracy. Utility Model Content

[0003] Therefore, it is necessary to provide an angular displacement sensor system and a vacuum circuit breaker to address the issue of measurement accuracy in angular displacement sensor systems.

[0004] An angular displacement sensor system, comprising:

[0005] Signal receiver;

[0006] Extension block, assembled on rotating parts;

[0007] A fixed sleeve, at least a portion of which is fitted onto the outer surface of the extension block, and at least a portion of which is connected to the rotating component;

[0008] A magnetic field sensing element is connected to the extension block, and the central axis of the magnetic field sensing element is collinear with the rotating component; the magnetic field sensing element and the signal receiver are arranged opposite to each other.

[0009] The inside of the fixed sleeve is in transmission engagement with the outer surface of the extension block; when the rotating component rotates relative to its own central axis, the fixed sleeve, the extension block, and the magnetic field sensing element rotate synchronously with the rotating component.

[0010] In one embodiment, the extension block is mounted to the rotating component by a first fastener, and a shock-absorbing component is provided between the first fastener and the rotating component.

[0011] The extension block has a first mounting hole inside, and the first mounting hole has a first mating surface inside; the rotating component has a second mounting hole.

[0012] The first fastener includes a first mating part and a second mating part that are connected to each other;

[0013] When the extension block and the rotating component are in the first assembly state, the first assembly hole and the second assembly hole are arranged opposite to each other, the first mating part is arranged inside the first assembly hole, and the first mating part presses the extension block against the rotating component.

[0014] The second mating part penetrates through the first mounting hole and connects with the second mounting hole; the shock-absorbing component is sandwiched between the first mating part and the first mating surface.

[0015] In one embodiment, the first assembly hole includes a first hole segment and a second hole segment, the diameter of the first hole segment is larger than the diameter of the second hole segment, and a first mating surface is formed at the connection position of the first hole segment and the second hole segment;

[0016] The second assembly hole has an internal thread, and the surface of the second mating part has an external thread; the second mating part is threadedly connected to the second assembly hole.

[0017] In one embodiment, the fixing sleeve is provided with a third mounting hole and a fourth mounting hole, and the fixing sleeve is sleeved on the outer surface of the extension block through the third mounting hole;

[0018] The inner wall of the third assembly hole is connected to the outer surface of the extension block;

[0019] The rotating component is provided with a positioning hole, and the fixed sleeve is equipped with a second fastener, which includes a third mating part and a fourth mating part connected to each other.

[0020] When the fixed sleeve and the rotating component are in the second assembly state, the third mating part is provided on the outside of the fixed sleeve, and the third mating part presses the fixed sleeve onto the rotating component; the fourth mating part passes through the fourth assembly hole and connects with the positioning hole.

[0021] In one embodiment, a first connecting portion is provided on the outer surface of the extension block; a second connecting portion is provided on the inner wall of the third assembly hole;

[0022] The first connecting part and the second connecting part are driven together so that the extension block can rotate with the fixed sleeve.

[0023] In one embodiment, the first connecting portion is configured as an external spline, and the second connecting portion is configured as an internal spline;

[0024] Multiple external splines are provided corresponding to internal splines, forming a spline pair between the outer surface of the extension block and the inner wall of the third assembly hole.

[0025] In one embodiment, at least two fifth mounting holes are provided on the end face of the extension block away from the rotating component, and the fifth mounting holes are evenly arranged around the opening of the first mounting hole.

[0026] The magnetic field sensing element includes a housing and a magnetic block. The housing has a sixth mounting hole and a mounting groove. The sixth mounting hole is opened in the same way as the fifth mounting hole. The magnetic block is assembled in the mounting groove.

[0027] A second mating surface is provided inside the sixth assembly hole;

[0028] A third fastener is mounted on the magnetic field sensing element. The third fastener includes a fifth mating part and a sixth mating part that are connected to each other.

[0029] When the magnetic field sensing element and the extension block are in the third assembly state, the fifth mating part is disposed in the sixth assembly hole, and the fifth mating part abuts against the second mating surface, pressing the housing onto the extension block; the sixth mating part passes through the sixth assembly hole and connects with the fifth assembly hole.

[0030] In one embodiment, the sixth assembly hole includes a third hole segment and a fourth hole segment, the diameter of the third hole segment is larger than the diameter of the fourth hole segment, and the second mating surface is formed at the connection position of the third hole segment and the fourth hole segment.

[0031] The fifth assembly hole has an internal thread, and the surface of the sixth mating part has an external thread; the sixth mating part is threadedly connected to the fifth assembly hole.

[0032] In one embodiment, the first fastener is configured as a screw;

[0033] And / or, the damping components are configured as damping rings.

[0034] A vacuum circuit breaker includes an angular displacement sensor system according to any one of the above claims, and further includes: a circuit breaker housing and a circuit breaker main shaft; the circuit breaker housing has an inner cavity, and the circuit breaker main shaft is disposed inside the inner cavity;

[0035] The angular displacement sensor system uses the circuit breaker spindle as a rotating component;

[0036] The circuit breaker spindle includes an assembly end, and the circuit breaker housing includes an assembly sidewall disposed opposite to the assembly end;

[0037] The signal receiver is used for mounting on the assembly sidewall;

[0038] The extension block is assembled on the assembly end, and at least a portion of the fixing sleeve is fitted onto the outer surface of the extension block, and at least a portion of the fixing sleeve is connected to the assembly end.

[0039] The magnetic field sensing element is connected to the extension block, and the magnetic field sensing element and the signal receiver are arranged opposite to each other. The central axis of the magnetic field sensing element is collinear with the central axis of the circuit breaker main shaft.

[0040] The aforementioned angular displacement sensor system includes a signal receiver, an extension block, a fixed sleeve, and a magnetic field sensing element. The extension block is mounted on a rotating component, which can rotate relative to its central axis. At least a portion of the fixed sleeve is fitted onto the outer surface of the extension block, and the interior of the fixed sleeve is connected to the outer surface of the extension block; at least a portion of the fixed sleeve is connected to the rotating component. The magnetic field sensing element is connected to the extension block, and after being fixed, it is positioned opposite the signal receiver, with its central axis collinear with the central axis of the rotating component. When the rotating component rotates relative to its central axis, the fixed sleeve, the extension block, and the magnetic field sensing element will rotate synchronously with the rotating component, ensuring a consistent rotation angle. During rotation, the fixed sleeve ensures the extension block is securely connected to the rotating component, preventing positional displacement of the magnetic field sensing element and maintaining alignment between the magnetic field sensing element and the rotating component during rotation.

[0041] A vacuum circuit breaker, comprising the aforementioned angular displacement sensor system, has the aforementioned beneficial effects. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the angular displacement sensor system provided in the embodiments of this application.

[0043] Figure 2 This is a cross-sectional view of the magnetic field sensing element and rotating component assembled according to an embodiment of this application.

[0044] Figure 3 An exploded view of the assembly of the magnetic field sensing element and the fixing sleeve provided in the embodiments of this application;

[0045] Figure 4 An exploded view of the assembly of the magnetic field sensing element and the fixing sleeve provided in the embodiment of this application from another perspective;

[0046] Figure 5 A front view of the extension block provided in an embodiment of this application;

[0047] Figure 6 This is a side sectional view of the extension block provided in an embodiment of this application;

[0048] Figure 7 A side sectional view of the extension block provided in an embodiment of this application from another perspective;

[0049] Figure 8 A front view of the fixing sleeve provided in an embodiment of this application;

[0050] Figure 9 This is a side view of the fixing sleeve provided in an embodiment of this application;

[0051] Figure 10This is a front view of the magnetic field sensing element provided in an embodiment of this application;

[0052] Figure 11 This is a side cross-sectional view of the magnetic field sensing element provided in the embodiments of this application;

[0053] Figure 12 This is an exploded view of the component assembly of the signal receiver provided in the embodiments of this application;

[0054] Figure 13 This is a schematic diagram of the structure of the vacuum circuit breaker provided in the embodiment of this application.

[0055] Icon labels:

[0056] 1000, Signal receiver;

[0057] 2000, Rotating component; 2001, Second mounting hole;

[0058] 3000, Magnetic field sensing element; 3001, Housing; 3002, Magnetic conductive block; 3003, Sixth mounting hole; 3004, Second mating surface;

[0059] 4000, First fastener; 4001, First mating part; 4002, Second mating part;

[0060] 4010, Second fastener; 4011, Third mating part; 4012, Fourth mating part;

[0061] 4020, Third fastener; 4021, Fifth mating part; 4022, Sixth mating part;

[0062] 4030, Fourth Fastener;

[0063] 5000, shock absorption components;

[0064] 6001, extension block; 6002, first mounting hole; 6003, first mating surface; 6004, first connecting part; 6005, fifth mounting hole;

[0065] 7001, Fixing sleeve; 7002, Third mounting hole; 7003, Fourth mounting hole; 7004, Second connecting part;

[0066] 8001, Circuit breaker housing; 8002, Circuit breaker spindle. Detailed Implementation

[0067] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0068] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0069] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0073] See Figure 1 - Appendix Figure 4 As shown, Figure 1 This is a schematic diagram of the angular displacement sensor system provided in the embodiments of this application. Figure 2 This is a cross-sectional view of the magnetic field sensing element and rotating component assembled according to an embodiment of this application. Figure 3 This is an exploded view of the assembly of the magnetic field sensing element and the fixing sleeve provided in the embodiments of this application. Figure 4 The exploded view of the magnetic field sensing element and fixing sleeve provided in this application embodiment, from another perspective, shows an angular displacement sensor system. The angular displacement sensor system includes: a signal receiver 1000, a magnetic field sensing element 3000, an extension block 6001, and a fixing sleeve 7001. The extension block 6001 is mounted on a rotating component 2000, which can rotate along its own central axis.

[0074] At least a portion of the fixing sleeve 7001 is fitted onto the outer surface of the extension block 6001, and after the fixing sleeve 7001 and the extension block 6001 are fitted together, at least a portion of the fixing sleeve 7001 is also connected to the rotating component 2000. The interior of the fixing sleeve 7001 is connected to the outer surface of the extension block 6001 via a transmission mechanism. When the rotating component 2000 rotates relative to its own central axis, it will drive the fixing sleeve 7001 to rotate synchronously. The transmission mechanism between the fixing sleeve 7001 and the extension block 6001 will drive the extension block 6001 to rotate synchronously, ensuring that the rotation angles of the rotating component 2000, the extension block 6001, and the fixing sleeve 7001 are highly consistent. This further ensures the accuracy of the magnetic field change cut by the magnetic induction element 3000, thereby ensuring the accuracy of the measurement data. The fixed sleeve 7001 prevents the extension block 6001 from becoming loose due to the vibration of the rotating component 2000. While ensuring that the rotation of the rotating component 2000 is synchronously transmitted to the extension block 6001, the connection between the extension block 6001 and the rotating component 2000 is reinforced.

[0075] The magnetic field sensing element 3000 is connected to the extension block 6001. After the magnetic field sensing element 3000 is installed, its central axis is collinear with the central axis of the rotating component 2000, thereby achieving alignment between the magnetic field sensing element 3000 and the rotating component 2000. During the rotation of the rotating component 2000, the fixed sleeve 7001, the extension block 6001, and the magnetic field sensing element 3000 will all rotate synchronously with the rotating component 2000. During the rotation, the magnetic field sensing element 3000 and the rotating component 2000 can maintain alignment, thereby ensuring the accuracy of the angular displacement sensor system measurement.

[0076] After assembly, the magnetic field sensing element 3000 is positioned opposite to the signal receiver 1000, and an electromagnetic coupling region is formed between the magnetic field sensing element 3000 and the signal receiver 1000.

[0077] When the rotating component 2000 rotates relative to its own central axis, the fixed sleeve 7001, the extension block 6001, and the magnetic field sensing element 3000 will rotate synchronously with the rotating component 2000. The rotation of the magnetic field sensing element 3000 cuts the magnetic field in the electromagnetic coupling area, thereby generating an electrical signal.

[0078] The fixed sleeve 7001 ensures that the extension block 6001 is stably positioned on the rotating component 2000 and realizes the synchronous rotation of the extension block 6001 and the rotating component 2000. Referring to the principle of the angular displacement sensor system, an electromagnetic coupling region is formed. The electromagnetic coupling region refers to the area in which the magnetic field can be effectively transmitted from the magnetic field source to the magnetic field sensing element 3000, and when the magnetic field sensing element 3000 moves (such as rotating in the angular displacement sensor system), it will generate an electrical signal by cutting the magnetic field. At the same time, the signal receiver 1000 can effectively receive this electrical signal. The electromagnetic coupling region refers to the area where electromagnetic energy conversion and signal transmission are realized.

[0079] To achieve the aforementioned electromagnetic coupling region, existing technologies can be referenced, such as using a permanent magnet to provide a stable magnetic field source. The permanent magnet is fixed in one position, and the magnetic field it generates can have a relatively strong magnetic field intensity within a certain space (e.g., a range of a few centimeters to tens of centimeters, depending on the magnetic field strength and sensor design requirements). The magnetic field sensing element 3000 and the signal receiver 1000 are placed in this magnetic field space, allowing the magnetic field sensing element 3000 to cut magnetic field lines during rotation, thereby generating an electrical signal that is received by the signal receiver 1000. Similarly, similar setups in existing angular displacement sensor systems can also be applied to achieve the aforementioned electromagnetic coupling region, and will not be elaborated upon here.

[0080] The signal receiver 1000 receives an electrical signal and converts and calculates it to obtain a digital signal. The data displayed by the digital signal is the angular displacement of the rotating component. For the specific configuration of the signal receiver 1000, please refer to the existing technology.

[0081] The magnetic field sensing element 3000 mentioned above needs to rotate with the rotating component 2000 and cut the magnetic field to generate an electrical signal. For specific settings, please refer to the existing technology.

[0082] The aforementioned extension block 6001 is adaptable to various sizes of rotating components 2000, ensuring that the magnetic field sensing element 3000 can be aligned and assembled with the rotating component 2000. By changing the specifications of the extension block 6001, the relative position of the magnetic field sensing element 3000 and the signal receiver 1000 can also be adjusted. After the signal receiver 1000 is positioned and installed, the extension block 6001 can be replaced to bring the magnetic field sensing element 3000 closer to the signal receiver 1000, resulting in better sensing performance. With the fixing sleeve 7001 configured, the extension block 6001 always maintains a stable connection with the rotating component 2000. The specifications of the fixing sleeve 7001 can be adapted to match the specifications of the extension block 6001, which will not be elaborated further here.

[0083] In some embodiments of this application, reference is made to the appended specification. Figure 5 - Appendix Figure 7 , Figure 5 This is a front view of the extension block provided in an embodiment of this application. Figure 6 This is a side sectional view of the extension block provided in an embodiment of this application. Figure 7 This is a side cross-sectional view of the extension block provided in an embodiment of this application from another perspective. The extension block 6001 is mounted on the rotating component 2000 by a first fastener 4000, and the magnetic field sensing element 3000 is mounted on the extension block 6001. A shock-absorbing component 5000 is provided between the first fastener 4000 and the rotating component 2000.

[0084] A first mounting hole 6002 is provided inside the extension block 6001, and a second mounting hole 2001 is provided on the rotating component 2000; a first mating surface 6003 is provided inside the first mounting hole 6002. The first fastener 4000 includes a first mating part 4001 and a second mating part 4002 that are connected to each other.

[0085] When the extension block 6001 and the rotating component 2000 are in the first assembly state, the first assembly hole 6002 and the second assembly hole 2001 are arranged opposite to each other, the first mating part 4001 is disposed inside the first assembly hole 6002, and the second mating part 4002 passes through the first assembly hole 6002 and connects with the second assembly hole 2001; the shock-absorbing component 5000 is sandwiched between the first mating part 4001 and the first mating surface 6003.

[0086] The first assembly state refers to the state in which the extension block 6001 and the rotating component 2000 are assembled and positioned.

[0087] During actual assembly, the extension block 6001 must be tightly fitted to the corresponding position of the rotating component 2000 to ensure that the first mounting hole 6002 and the second mounting hole 2001 are completely aligned. The first fastener 4000 is then assembled into the first mounting hole 6002 and the second mounting hole 2001, with the second mating portion 4002 of the first fastener 4000 penetrating through the first mounting hole 6002 until it connects with the second mounting hole 2001 on the rotating component 2000. During the connection process between the second mating portion 4002 and the second mounting hole 2001, the connection is gradually tightened through tightening operations. As the connection between the second mating portion 4002 and the second mounting hole 2001 becomes increasingly tight, the first mating portion 4001 receives a reaction force, thereby pressing tightly against the first mating surface 6003 through the shock-absorbing component 5000. This interaction method allows the extension block 6001 to be securely mounted on the rotating component 2000, achieving a stable and reliable connection between the two.

[0088] Before the first mating part 4001 is inserted into the first mounting hole 6002, the shock-absorbing component 5000 is placed in the gap between the first mating part 4001 and the first mating surface 6003. After the second mating part 4002 is connected and tightened to the second mounting hole 2001, the shock-absorbing component 5000 is tightly clamped between the first mating part 4001 and the first mating surface 6003 to achieve the shock-absorbing function.

[0089] The magnetic field sensing element 3000 is connected to the rotating component 2000, ensuring that the central axis of the magnetic field sensing element 3000 is collinear with the central axis of the rotating component 2000. When the rotating component 2000 vibrates, the damping component 5000 can absorb or buffer the energy generated by the vibration, reducing the vibration energy transmitted to the magnetic field sensing element 3000. This helps maintain the stability of the magnetic field sensing element 3000, preventing it from shifting position due to vibration, thereby better ensuring the accuracy of the system measurement. It also ensures that the magnetic field sensing element 3000 remains in an ideal position while the rotating component 2000 rotates, reducing measurement errors caused by positional shifts.

[0090] Through the precise fit between the first mounting hole 6002 and the second mounting hole 2001, and the connection of the first fastener 4000, the central axes of the magnetic field sensing element 3000 and the rotating component 2000 can always remain highly collinear. Even when the rotating component 2000 encounters complex conditions such as high-speed rotation or strong external impact during operation, the magnetic field sensing element 3000 can minimize offset thanks to the stable connection structure between the extension block 6001 and the rotating component 2000. This significantly improves the accuracy and stability of angular displacement measurement, providing reliable assurance for various applications that rely on precise angular displacement data.

[0091] The damping component 5000, sandwiched between the first mating part 4001 and the first mating surface 6003, greatly optimizes the damping effect. When the rotating component 2000 vibrates, the vibration is first transmitted to the first mating part 4001 of the first fastener 4000. At this time, the damping component 5000, located between the first mating part 4001 and the first mating surface 6003, quickly comes into play, effectively absorbing and dispersing the vibration energy.

[0092] In some embodiments of this application, the first assembly hole 6002 includes a first hole segment and a second hole segment, the diameter of the first hole segment is larger than the diameter of the second hole segment, and a first mating surface 6003 is formed at the connection position of the first hole segment and the second hole segment; the first assembly hole 6002 can be set with reference to a conventional stepped hole, and the first mating surface 6003 is set as a stepped surface.

[0093] The second assembly hole 2001 has an internal thread, and the surface of the second mating part 4002 has an external thread; the second mating part 4002 is threadedly connected to the second assembly hole 2001.

[0094] The first assembly hole 6002 is composed of a first hole segment and a second hole segment with different hole diameters. The hole diameter of the first hole segment is larger than that of the second hole segment. At the junction of the first hole segment and the second hole segment, the change in hole diameter forms a first mating surface 6003 that can be abutted by the first mating part 4001.

[0095] During assembly, the first mating part 4001 is first placed inside the first assembly hole 6002, and then the second mating part 4002 is passed through the first assembly hole 6002 and threadedly connected to the second assembly hole 2001. By rotating the second mating part 4002, the external thread and the internal thread gradually become tightly connected. During this process, the connection between the second mating part 4002 and the second assembly hole 2001 generates a reaction force that causes the first mating part 4001 to press against the first mating surface 6003.

[0096] After the second mating part 4002 and the second mounting hole 2001 are connected by threads, the first mating part 4001 is subjected to the reaction force generated by the connection between the second mating part 4002 and the second mounting hole 2001, thereby pressing the first mating surface 6003 through the shock-absorbing component 5000.

[0097] The stepped design of the first mounting hole 6002, combined with the threaded connection between the second mating part 4002 and the second mounting hole 2001, forms a robust connection between the extension block 6001 and the rotating component 2000. This connection method provides strong axial and circumferential constraints when the rotating component 2000 rotates at high speed or is subjected to large external forces, effectively preventing relative displacement between the two. Simultaneously, it ensures that the central axes of the magnetic field sensing element 3000 and the rotating component 2000 remain collinear, providing a solid guarantee for the accuracy and stability of angular displacement measurement and contributing to stable equipment operation.

[0098] In some embodiments of this application, reference is made to the appended specification. Figure 8 and attached Figure 9 , Figure 8 This is a front view of the fixing sleeve provided in an embodiment of this application. Figure 9 This is a side view of the fixing sleeve provided in the embodiment of this application; the fixing sleeve 7001 is provided with a third mounting hole 7002 and a fourth mounting hole 7003, and the fixing sleeve 7001 is sleeved on the outer surface of the extension block 6001 through the third mounting hole 7002; the inner wall of the third mounting hole 7002 is connected to the outer surface of the extension block 6001.

[0099] The rotating component 2000 is provided with a positioning hole, and the fixed sleeve 7001 is equipped with a second fastener 4010. The second fastener 4010 includes a third mating part 4011 and a fourth mating part 4012 connected to each other.

[0100] When the fixed sleeve 7001 and the rotating component 2000 are in the second assembly state, the third mating part 4011 is provided on the outside of the fixed sleeve 7001, and the surface of the third mating part 4011 presses the fixed sleeve 7001 onto the rotating component 2000; the fourth mating part 4012 passes through the fourth assembly hole 7003 and connects to the positioning hole.

[0101] The second assembly state refers to the state in which the fixed sleeve 7001 and the rotating component 2000 are assembled and positioned.

[0102] During assembly, the third mounting hole 7002 of the fixing sleeve 7001 is aligned with the outer surface of the extension block 6001, and then the fixing sleeve 7001 is inserted along the axial direction of the extension block 6001. Since the inner wall of the third mounting hole 7002 is connected to the outer surface of the extension block 6001, this mating method ensures that the fixing sleeve 7001 is stably installed on the extension block 6001, providing a basis for subsequent connection with the rotating component 2000.

[0103] The second fastener 4010 is composed of a third mating part 4011 and a fourth mating part 4012 connected together. For example, the second fastener 4010 can be a screw.

[0104] When the fixed sleeve 7001 and the rotating component 2000 are ready to enter the second assembly state, firstly, align the fourth mating part 4012 of the second fastener 4010 with the fourth assembly hole 7003 on the fixed sleeve 7001, and then pass it through the fourth assembly hole 7003. At this time, the position of the positioning hole on the rotating component 2000 should correspond to the fourth mating part 4012 that passes through the fourth assembly hole 7003. Next, screw the fourth mating part 4012 into the positioning hole, and tighten it to firmly connect the fourth mating part 4012 with the positioning hole. During this process, due to the connection between the fourth mating part 4012 and the positioning hole, the third mating part 4011 generates a force in the direction of the fixed sleeve 7001. The third mating part 4011 is located on the outside of the fixed sleeve 7001, and the surface of the third mating part 4011 tightly presses the fixed sleeve 7001 onto the rotating component 2000, completing the entire assembly process of the fixed sleeve 7001 and the rotating component 2000.

[0105] The fixing sleeve 7001 is firmly pressed onto the rotating component 2000 by the engagement of the third mounting hole 7002 with the extension block 6001 and the second fastener 4010, ensuring a stable connection between the extension block 6001 and the rotating component 2000. During the operation of the rotating component 2000, even under complex external forces, such as centrifugal force generated during high-speed rotation or impact forces from different directions, the structure consisting of the fixing sleeve 7001 and the second fastener 4010 effectively resists these external forces, preventing loosening or displacement between the extension block 6001 and the rotating component 2000. This ensures the collinearity of the magnetic field sensing element 3000 and the central axis of the rotating component 2000, thereby improving the accuracy and stability of angular displacement measurement. The fixing sleeve 7001 and the second fastener 4010 enhance the rigidity and strength of the assembly between the extension block 6001 and the rotating component 2000. When the rotating component 2000 is subjected to a large impact, the fixed sleeve 7001 can distribute the impact force over a larger area, reducing the situation of excessive local stress.

[0106] In some embodiments of this application, a first connecting portion 6004 is provided on the outer surface of the extension block 6001, and a second connecting portion 7004 is provided on the inner wall of the third mounting hole 7002. The first connecting portion 6004 and the second connecting portion 7004 are in a driving engagement so that the extension block 6001 can rotate with the fixed sleeve 7001.

[0107] To achieve a good transmission fit, the first connecting part 6004 and the second connecting part 7004 can adopt various shape designs. For example, the first connecting part 6004 can be designed as multiple protrusions evenly distributed along the circumferential direction of the outer surface of the extension block 6001, while the second connecting part 7004 is correspondingly designed as grooves that match the protrusions, evenly distributed on the inner wall of the third mounting hole 7002. When the fixing sleeve 7001 is fitted onto the extension block 6001, these protrusions fit precisely into the grooves, forming a tight transmission connection structure. Considering that they will frequently come into contact and rub during rotation, these two connecting parts should be made of materials with good wear resistance and high strength. For example, high-strength alloy materials can be selected, which can ensure that the transmission performance will not be affected by wear during long-term use, and can withstand various stresses generated during rotation.

[0108] Through the transmission cooperation between the first connecting part 6004 and the second connecting part 7004, it can be ensured that the extension block 6001 and the fixed sleeve 7001 achieve precise synchronous rotation. When the rotating component 2000 drives the fixed sleeve 7001 to rotate, due to the tight cooperation between the first connecting part 6004 and the second connecting part 7004, the extension block 6001 can quickly and accurately follow the fixed sleeve 7001 to rotate, without any lag or asynchrony.

[0109] In some embodiments of this application, the first connecting portion 6004 is configured as an external spline, and the second connecting portion 7004 is configured as an internal spline. Multiple external and internal splines are correspondingly provided, forming a spline pair between the outer surface of the extension block 6001 and the inner wall of the third mounting hole 7002.

[0110] Multiple external splines are evenly distributed on the outer surface of the extension block 6001, and similarly, multiple internal splines are evenly distributed on the inner wall of the third mounting hole 7002 of the fixing sleeve 7001. During assembly, the external splines and internal splines correspond one-to-one, thus forming a spline pair between the outer surface of the extension block 6001 and the inner wall of the third mounting hole 7002 of the fixing sleeve 7001. This evenly distributed design ensures uniform force transmission in the circumferential direction, avoiding damage caused by excessive local stress. During assembly, the third mounting hole 7002 of the fixing sleeve 7001 is first aligned with the extension block 6001 to initially align the external and internal splines. Then, using a suitable assembly tool, such as a dedicated spline assembly jig, the fixing sleeve 7001 is slowly fitted into the extension block 6001 to ensure that the external splines are smoothly embedded in the internal splines, forming a tight connection.

[0111] The even distribution of multiple spline teeth ensures that the relative position between the extension block 6001 and the fixed sleeve 7001 remains precise during rotation. This guarantees that the central axes of the magnetic field sensing element 3000 and the rotating component 2000 are always collinear, effectively reducing angular displacement measurement deviations caused by transmission errors, improving measurement accuracy and precision, and meeting the requirements of applications with stringent high-precision measurement requirements.

[0112] In some embodiments of this application, reference is made to the appended specification. Figure 10 - Appendix Figure 12 , Figure 10 This is a front view of the magnetic field sensing element provided in the embodiment of this application. Figure 11 This is a side cross-sectional view of the magnetic field sensing element provided in the embodiment of this application. Figure 12 The exploded view of the component assembly of the signal receiver provided in the embodiment of this application shows that at least two fifth assembly holes 6005 are provided on the end face of the extension block 6001 away from the rotating component 2000. The fifth assembly holes 6005 are evenly arranged around the opening of the first assembly hole 6002.

[0113] The magnetic field sensing element 3000 includes a housing 3001 and a magnetic block 3002. The housing 3001 has a sixth mounting hole 3003 and a mounting groove. The sixth mounting hole 3003 is opened corresponding to the fifth mounting hole 6005. The magnetic block 3002 is mounted in the mounting groove.

[0114] A second mating surface 3004 is provided in the sixth mounting hole 3003. A third fastener 4020 is mounted on the magnetic field sensing element 3000. The third fastener 4020 includes a fifth mating part 4021 and a sixth mating part 4022 that are connected to each other.

[0115] When the magnetic field sensing element 3000 and the extension block 6001 are in the third assembly state, the fifth mating part 4021 is disposed in the sixth assembly hole 3003, and the fifth mating part 4021 abuts against the second mating surface 3004, pressing the housing 3001 onto the extension block 6001; the sixth mating part 4022 penetrates the sixth assembly hole 3003 and connects with the fifth assembly hole 6005.

[0116] The third assembly state refers to the assembly and positioning of the magnetic field sensing element 3000 and the extension block 6001.

[0117] The magnetic field sensing element 3000 consists of a housing 3001 and a magnetically conductive block 3002. A sixth mounting hole 3003 on the housing 3001 precisely corresponds to a fifth mounting hole 6005 on the extension block 6001, and a second mating surface 3004 is provided inside the sixth mounting hole 3003. Before formal assembly, the magnetically conductive block 3002 must be installed in the mounting groove of the housing 3001. The third fastener 4020 consists of a fifth mating part 4021 and a sixth mating part 4022 connected to each other. During the third assembly of the magnetic field sensing element 3000 and the extension block 6001, the sixth mating part 4022 is passed through the sixth mounting hole 3003 and aligns with the corresponding fifth mounting hole 6005 on the extension block 6001; at this time, the fifth mating part 4021 is located inside the sixth mounting hole 3003. Subsequently, through tightening or other operations, the sixth mating part 4022 and the fifth mounting hole 6005 are securely connected. As the connection gradually tightens, the fifth mating part 4021 will be subjected to a corresponding reaction force, which will press against the second mating surface 3004, thereby pressing the housing 3001 onto the extension block 6001, completing the assembly of the magnetic field sensing element 3000 and the extension block 6001.

[0118] The precise alignment of the fifth mounting hole 6005 and the sixth mounting hole 3003, along with the connection of the third fastener 4020, prevents the magnetic field sensing element 3000 from loosening or shifting during rotation, ensuring that the central axis of the magnetic field sensing element 3000 and the rotating component 2000 remain collinear. The stable position of the magnetic guide block 3002 helps improve the accuracy of the magnetic field sensing element 3000 in detecting changes in the magnetic field, thereby further improving the measurement accuracy of the entire angular displacement sensor system.

[0119] In some embodiments of this application, the sixth assembly hole 3003 includes a third hole segment and a fourth hole segment, the diameter of the third hole segment is larger than the diameter of the fourth hole segment, and the second mating surface 3004 is formed at the connection position of the third hole segment and the fourth hole segment.

[0120] The fifth assembly hole 6005 has an internal thread, and the surface of the sixth mating part 4022 has an external thread; the sixth mating part 4022 is threadedly connected to the fifth assembly hole 6005.

[0121] The fifth mounting hole 6005 has an internal thread, and the sixth mating part 4022 has an external thread. After the fifth mating part 4021 is positioned appropriately in the sixth mounting hole 3003, the sixth mating part 4022 is pushed through the fourth section of the sixth mounting hole 3003 and aligned with the fifth mounting hole 6005 on the extension block 6001. By rotating the third fastener 4020, the external and internal threads gradually engage tightly. During the thread engagement process, the sixth mating part 4022 continuously penetrates deeper into the fifth mounting hole 6005. The stepped design of the sixth mounting hole 3003, combined with the threaded connection between the sixth mating part 4022 and the fifth mounting hole 6005, enhances the connection stability between the magnetic field sensing element 3000 and the extension block 6001. When the rotating component 2000 operates at high speed or is subjected to complex external forces, the strong axial and circumferential constraints provided by the threaded connection effectively prevent relative displacement between the magnetic field sensing element 3000 and the extension block 6001. Meanwhile, the tight fit between the second mating surface 3004 and the fifth mating part 4021 further ensures the stability of the magnetic field sensing element 3000 in the installation position, and always maintains the collinearity of the central axis of the magnetic field sensing element 3000 and the rotating part 2000, providing a reliable guarantee for high-precision measurement of angular displacement.

[0122] In some embodiments of this application, when the first fastener 4000 is a screw, the screw head serves as the first mating part 4001, and the screw shank portion serves as the second mating part 4002. Specifically, an M6×20 socket head cap screw can be used, which refers to a socket head cap screw with a nominal diameter of 6 mm and a length of 20 mm.

[0123] During assembly, the screw head (first mating part 4001) is first placed in the first mounting hole 6002 of the extension block 6001. Simultaneously, a damping ring is fitted onto the screw, positioning it between the screw head and the first mating surface 6003 of the first mounting hole 6002. Then, given that the second mounting hole 2001 has internal threads that match the external threads of the screw, the screw shank (second mating part 4002) is passed through the first mounting hole 6002 and screwed into the second mounting hole 2001 of the rotating component 2000. As the screw is rotated, the screw shank (second mating part 4002) gradually penetrates deeper into the second mounting hole 2001, while the screw head (first mating part 4001) continuously presses against the damping ring, thereby firmly fixing the extension block 6001 onto the rotating component 2000.

[0124] If the second fastener 4010 is also a screw, its screw shank is the fourth mating part 4012, and the screw head is the third mating part 4011. Specifically, an M4×20 socket head cap screw can be used. An M4×20 socket head cap screw refers to a socket head cap screw with a nominal diameter of 4 mm and a length of 20 mm.

[0125] During operation, the fourth mounting hole 7003 of the fixing sleeve 7001 is precisely aligned with the positioning hole of the rotating component 2000. The screw shank (fourth mating part 4012) is inserted from the outside of the fixing sleeve 7001 into the fourth mounting hole 7003, and then screwed into the positioning hole of the rotating component 2000. As the screw is continuously tightened, the screw head (third mating part 4011) will press the fixing sleeve 7001 tightly onto the rotating component 2000, achieving a stable connection between the fixing sleeve 7001 and the rotating component 2000, further enhancing the stability of the assembly between the extension block 6001 and the rotating component 2000.

[0126] When the third fastener 4020 is a screw, the screw head serves as the fifth mating part 4021, and the screw shank serves as the sixth mating part 4022. Specifically, an M3×10 socket head cap screw can be used, which refers to a socket head cap screw with a nominal diameter of 3 mm and a length of 10 mm.

[0127] First, align the sixth mounting hole 3003 of the magnetic field sensing element 3000 with the fifth mounting hole 6005 on the extension block 6001, and insert the screw head (fifth mating part 4021) into the third section of the sixth mounting hole 3003. Next, pass the screw shank (sixth mating part 4022) through the fourth section of the sixth mounting hole 3003 and thread it into the fifth mounting hole 6005 on the extension block 6001. By rotating the screw, the screw head (fifth mating part 4021) comes into close contact with and is pressed against the second mating surface 3004, while the screw shank (sixth mating part 4022) is securely connected to the fifth mounting hole 6005, thereby firmly mounting the magnetic field sensing element 3000 onto the extension block 6001.

[0128] The damping collar is made of rubber or other elastic materials with damping properties. Its inner diameter is adapted to the screw size of the first fastener 4000 (screw), and its outer diameter is in close contact with the first mating surface 6003 of the first mounting hole 6002. During the assembly of the first fastener 4000, the damping collar is placed on the screw, positioning it between the first mating surface 6003 of the first mounting hole 6002 and the screw head. Once the rotating component 2000 vibrates, the damping collar can efficiently buffer the vibration transmission through its own elastic deformation, effectively reducing the adverse effects of vibration on the magnetic field sensing element 3000.

[0129] Reference manual attached Figure 13 , Figure 13 This is a schematic diagram of the structure of a vacuum circuit breaker provided in an embodiment of this application. The vacuum circuit breaker shown includes the aforementioned angular displacement sensor system, and further includes: a circuit breaker housing 8001 and a circuit breaker main shaft 8002. The circuit breaker housing 8001 has an internal cavity, and the circuit breaker main shaft 8002 is disposed inside the internal cavity. The angular displacement sensor system uses the circuit breaker main shaft 8002 as a rotating component 2000. The circuit breaker main shaft 8002 includes a mounting end, and the circuit breaker housing 8001 includes a mounting sidewall opposite to the mounting end. A signal receiver 1000 is mounted on the mounting sidewall by a fourth fastener 4030, which can be configured with reference to existing technology, for example, as a screw.

[0130] The extension block 6001 is assembled onto the assembly end. At least a portion of the fixing sleeve 7001 is fitted onto the outer surface of the extension block 6001, and at least a portion of the fixing sleeve 7001 is connected to the assembly end.

[0131] The magnetic field sensing element 3000 is connected to the extension block 6001, and the magnetic field sensing element 3000 is arranged opposite to the signal receiver 1000. The central axis of the magnetic field sensing element 3000 is collinear with the central axis of the circuit breaker main shaft 8002.

[0132] By tightly integrating the angular displacement sensor system with the circuit breaker main shaft 8002, the angular displacement changes of the circuit breaker main shaft 8002 can be monitored in real time and accurately. Because the magnetic field sensing element 3000 is collinear with the central axis of the circuit breaker main shaft 8002, and the signal receiver 1000 is precisely positioned, the sensor system can accurately capture the changes in electromagnetic signals generated during the rotation of the main shaft. This provides operators with accurate information about the circuit breaker's opening and closing status, helping to promptly detect abnormalities during circuit breaker operation and ensuring the safe and stable operation of the power system. The structure of other parts of the vacuum circuit breaker can be referenced from existing technologies and will not be elaborated upon here.

[0133] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0134] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An angular displacement sensor system, characterized by The application relates to a signal receiver, a prolonging block assembled on a rotating part, a fixing sleeve, a magnetic field sensing element, and a transmission cooperation between the inside of the fixing sleeve and the outer surface of the prolonging block. The prolonging block is assembled on the rotating part through a first fastener, and a damping part is arranged between the first fastener and the rotating part. The prolonging block is internally provided with a first assembly hole, and the first assembly hole is internally provided with a first cooperation surface. The first fastener comprises a first cooperation part and a second cooperation part. When the prolonging block and the rotating part are in a first assembly state, the first assembly hole and the second assembly hole are oppositely arranged, the first cooperation part is arranged in the first assembly hole, and the first cooperation part tightly presses the prolonging block on the rotating part. The second cooperation part penetrates through the first assembly hole to be connected with the second assembly hole, and the damping part is clamped between the first cooperation part and the first cooperation surface.

2. The angular displacement sensor system of claim 1, wherein, The first assembly hole comprises a first hole section and a second hole section, the hole diameter of the first hole section is larger than that of the second hole section, and the first cooperation surface is formed at the connecting position of the first hole section and the second hole section. The inside of the second assembly hole is internally provided with an internal thread, and the surface of the second cooperation part is provided with an external thread. The fixing sleeve is internally provided with a third assembly hole and a fourth assembly hole, and the fixing sleeve is sleeved on the outer surface of the prolonging block through the third assembly hole. The inner wall of the third assembly hole is connected with the outer surface of the prolonging block. The rotating part is provided with a positioning hole, the fixing sleeve is provided with a second fastener, and the second fastener comprises a third cooperation part and a fourth cooperation part.

3. The angular displacement sensor system of claim 2, wherein, When the fixing sleeve and the rotating part are in a second assembly state, the third cooperation part is arranged on the outer side of the fixing sleeve, and the third cooperation part tightly presses the fixing sleeve on the rotating part; and the fourth cooperation part penetrates through the fourth assembly hole to be connected with the positioning hole. The outer surface of the prolonging block is provided with a first connecting part, and the inner wall of the third assembly hole is provided with a second connecting part.

4. The angular displacement sensor system of claim 2, wherein, The first connecting part and the second connecting part are in transmission cooperation, so that the prolonging block can rotate with the fixing sleeve. The first connecting part is arranged as an external spline, and the second connecting part is arranged as an internal spline. The external spline and the internal spline are correspondingly provided with a plurality of splines, and a spline pair is formed between the outer surface of the prolonging block and the inner wall of the third assembly hole. ​ 5. The angular displacement sensor system of claim 4, wherein, ​ ​ 6. The angular displacement sensor system of claim 5, wherein, ​ ​ 7. The angular displacement sensor system of claim 2, wherein, At least two fifth assembly holes are formed on the end surface of the extension block away from the rotating part, and the fifth assembly holes are uniformly arranged around the opening of the first assembly hole; The magnetic field sensing element comprises a shell and a magnetic conducting block, the shell is provided with a sixth assembly hole and a mounting groove, the sixth assembly hole is formed corresponding to the fifth assembly hole, and the magnetic conducting block is assembled in the mounting groove; A second matching surface is arranged in the sixth assembly hole; A third fastener is assembled on the magnetic field sensing element, and the third fastener comprises a fifth matching part and a sixth matching part connected to each other; When the magnetic field sensing element and the extension block are in a third assembly state, the fifth matching part is arranged in the sixth assembly hole, and the fifth matching part abuts against the second matching surface to press the shell tightly on the extension block; and the sixth matching part penetrates through the sixth assembly hole to be connected with the fifth assembly hole.

8. The angular displacement sensor system of claim 7, wherein, The sixth assembly hole comprises a third hole section and a fourth hole section, the hole diameter of the third hole section is larger than that of the fourth hole section, and the second matching surface is formed at the connecting position of the third hole section and the fourth hole section; An inner thread is arranged in the fifth assembly hole, and an outer thread is arranged on the surface of the sixth matching part; and the sixth matching part is threadedly connected with the fifth assembly hole.

9. The angular displacement sensor system of claim 2, wherein, The first fastener is a screw; And / or, the damping part is a damping ring.

10. A vacuum interrupter, characterized by, The angle displacement sensor system comprises the angle displacement sensor system according to any one of claims 1-9, and further comprises a circuit breaker shell and a circuit breaker main shaft; an inner cavity is arranged in the circuit breaker shell, and the circuit breaker main shaft is arranged in the inner cavity; The angle displacement sensor system takes the circuit breaker main shaft as a rotating part; The circuit breaker main shaft comprises an assembly end, and the circuit breaker shell comprises an assembly side wall arranged opposite to the assembly end; The signal receiver is arranged on the assembly side wall; the extension block is arranged on the assembly end, at least part of the fixing sleeve is arranged on the outer surface of the extension block, and at least part of the fixing sleeve is connected with the assembly end; The magnetic field sensing element is connected with the extension block, and the magnetic field sensing element is arranged opposite to the signal receiver; the central axis of the magnetic field sensing element is collinear with the central axis of the circuit breaker main shaft.

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