Star contactor module, star-delta contactor module and star-delta starting switch

Abstract

The utility model discloses a star contactor module, a star-delta contactor module and a star-delta starting switch, and the star contactor module comprises a star module housing, a first electromagnetic system, a first contact support, and a first contact assembly. The first contact assembly comprises three first moving contacts and three groups of first static conductive structures, and the three first moving contacts are in short circuit through short circuit pieces; each first static conductive structure comprises a first wiring section, a contact section and a second wiring section, and the first wiring section, the contact section and the second wiring section in the same first static conductive structure are always kept in a connected state on a circuit; the first electromagnetic system comprises a first armature which is arranged in a sliding mode, the first contact support and the first armature are arranged in a synchronous movement mode, the three contact sections are located below the three first moving contacts respectively, and connection and disconnection of a first contact assembly are achieved through sliding of the first contact support; the star contactor has the characteristic of independent modularization of the star contactor module.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and is a star contactor module, a star-delta contactor module, and a star-delta starting switch. Background Art

[0002] In the field of electric motors, a star-delta starting circuit is often used to enable the motor to start normally. In the star-delta starting circuit, apart from some protection devices, the most important thing is that three contactors are needed, namely the main contactor, the angle contactor and the star contactor. The main contactor, the angle contactor and the star contactor are connected. When the main contactor and the angle contactor are connected at the same time, the circuit presents a delta connection. When the main contactor and the star contactor are connected, the circuit presents a star connection. The star connection is used in the initial stage of the motor start-up. After the motor runs stably for a certain period of time, it is switched to the delta connection to complete the motor start-up.

[0003] In the conventional star-delta starting circuit, the main contactor, angle contactor and star contactor are all scattered. The advantage of this method is that the main contactor, angle contactor and star contactor can be directly used as contactors purchased on the market. It is only necessary to connect the main contactor, angle contactor and star contactor, and then short-circuit the star contactor externally. Although the wiring is complicated, for manufacturers, there is less pressure on goods because there are fewer internal special parts, and all contactors can also be sold as conventional contactors.

[0004] With the continuous research of technicians in this field, a star-delta starting switch dedicated to star-delta starting circuits has been designed, such as the star-delta starting switch and motor starting circuit disclosed in CN117153586A. It can be seen from the records in its patent text that except for the contact support and moving contact bridge inside the main contact device, the angle moving contact bridge and star moving contact bridge inside the star-delta contact device, the remaining components are all different from conventional contactors, that is, the remaining components cannot be used in other contactor products except for manufacturing this star-delta starting switch. This star-delta starting switch has a very high degree of integration, and users can use it without additional complicated wiring, but because too many internal components are special components (specially used for this star-delta starting switch), it adds a burden on the company to prepare materials.

[0005] The same problem also applies to the star-sealing contactor, such as the AC star-sealing contactor disclosed in CN209675211U.

[0006] After extensive research, the inventor found that if we want to reduce the number of special components as much as possible and relatively reduce the complexity of user wiring, the key is how to modify the star contactor and make a star contactor module dedicated to star connection. After the user gets it, he can freely match it with ordinary contactors to form a closed star contactor or a star-delta starting switch.

[0007] Therefore, how to design such a star contactor module professionally used for star connection is a direction worthy of research. Summary of the invention

[0008] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a star contactor module, a star-delta contactor module and a star-delta starting switch with the advantages thereof.

[0009] The present application provides: a star contactor module, which includes a star module housing, a first electromagnetic system, a first contact support, a first contact assembly and a reset structure; the first contact assembly includes three first moving contacts and three groups of first static conductive structures, the first moving contact is arranged on the first contact support and moves with the first contact support, and the three first moving contacts are short-circuited by a short-circuit member; each first static conductive structure includes a first wiring segment, a contact segment and a second wiring segment, and the first wiring segment, the contact segment and the second wiring segment in the same first static conductive structure always maintain a connected state in the circuit; the first electromagnetic system includes a first armature arranged for sliding, the first armature includes a first armature arranged for sliding, and the first armature includes a first armature for sliding. A contact support and a first armature are arranged for synchronous movement, and the three contact segments are respectively located below the three first moving contacts, and the first contact assembly is connected and disconnected by sliding of the first contact support; when the first electromagnetic system is energized, the first armature slides under the action of the magnetic field force of the first electromagnetic system, so that the first moving contact contacts the contact segment, thereby connecting the first contact assembly; the reset structure is a reset spring, one end of the reset spring abuts against the first contact support or the first armature, and the reset spring is used to drive the first contact support to reset after the first electromagnetic system is powered off, so that the first moving contact is separated from the contact segment, thereby disconnecting the first contact assembly.

[0010] The above structure is a star contactor module with an independent electromagnetic system, which can be used in conjunction with other contactors. When the star contactor module is connected to the circuit (the first wiring segment is connected to the load, and the second wiring segment is connected to other contactors), when the first contact structure is connected, the first moving contact is in contact with the contact segment, and the star contactor module is enabled in the circuit, so that the circuit presents a star connection. When the first contact structure is disconnected, since the first static conductive structure always remains connected in the circuit, the first static conductive structure is equivalent to the role of a connecting conductor. At this time, the star contactor module is not enabled in the circuit, so it does not affect the connection of other contactors (such as delta connection). Such a structure, since only the star contactor module is modified, does not cause too much change to the structure of other contactors. For most contactor manufacturers, they can stock contactors normally. When it is necessary to form a closed star contactor or a star-delta starting switch, it is only necessary to match this star contactor module with other contactors, which greatly reduces the burden of material preparation for the enterprise, and since the short circuit has been completed inside the star contactor module, its wiring is also very convenient.

[0011] In some embodiments of the present application, the short-circuit is a soft link, and the three first moving contacts are connected together through the soft link; or, the short-circuit is a hard link, and the three first moving contacts are connected together through the hard link; or, the short-circuit is a combination of a soft link and a hard link, wherein two first moving contacts are connected through a hard link, and another first moving contact is connected to one or two of the two first moving contacts through a soft link.

[0012] There are many forms of short-circuit components, and their essence is how to electrically connect the three first moving contacts together. The short-circuit effect can be achieved by using soft connection, hard connection or a combination of the two.

[0013] In some embodiments of the present application, the first wiring segment, the contact segment, and the second wiring segment are an integrally formed conductive bar, so that the three are always connected in the circuit.

[0014] In some embodiments of the present application, among the first wiring segment, the contact segment, and the second wiring segment, the first wiring segment and the contact segment are fixed by a first fastener, welded, or connected by a soft connection, and the contact segment and the second wiring segment are fixed by a first fastener, welded, or connected by a soft connection, so that the three are always connected in the circuit;

[0015] In some embodiments of the present application, among the first wiring segment, the contact segment, and the second wiring segment, the first wiring segment and the second wiring segment are fixed by a first fastener, fixed by welding, or connected by a soft connection, and the contact segment and the first wiring segment are fixed by a first fastener, fixed by welding, or connected by a soft connection, so that the three are always connected in the circuit;

[0016] In some embodiments of the present application, among the first wiring segment, the contact segment, and the second wiring segment, the first wiring segment and the second wiring segment are fixed by a first fastener, fixed by welding, or connected by a soft connection, and the contact segment and the second wiring segment are fixed by a first fastener, fixed by welding, or connected by a soft connection, so that the three are always connected in the circuit;

[0017] In some embodiments of the present application, two of the first wiring segment, the contact segment, and the second wiring segment are integrally formed, and the other one is fixed to the two integrally formed structures by a first fastener, welded, or softly connected to ensure that the three always remain connected in the circuit.

[0018] The first wiring segment, the contact segment and the second wiring segment here always keep connected in the circuit, which means that the first static conductive structure is a "segment of conductor" (capable of conducting electricity) as a whole, but there are many ways to compose this segment of conductor, such as an integrally formed conductive bar, or a split-form structure fixed by soft connection, welding, or fasteners.

[0019] In some embodiments of the present application, a reset structure is also included. The reset structure is a reset spring. One end of the reset spring is against the first contact support or the first armature. The reset spring is used to drive the first contact support to reset after the first electromagnetic system is powered off, so as to separate the first moving contact from the contact segment.

[0020] The star contactor module can be reset by a reset spring to separate the first moving contact from the contact segment and complete the disconnection of the first contact assembly.

[0021] A star-delta contactor module, comprising a first contactor and the above-mentioned star contactor module; the first contactor comprises a second contact assembly, the second contact assembly comprises three second moving contacts, three second stationary contacts I, three second stationary contacts II, three first wiring boards I and three first wiring boards II, the second contact assembly has an on state and an off state; when in the on state, the second moving contact is in contact with the corresponding second stationary contact I and second stationary contact II; when in the off state, the second moving contact is separated from the corresponding second stationary contact I and second stationary contact II; the three first wiring boards I are respectively conductively connected to the three second stationary contacts I, the three first wiring boards II are respectively conductively connected to the three second stationary contacts II, and the three second wiring segments are respectively arranged in a one-to-one correspondence with the three first wiring boards I and are fastened or softly connected or fixed by welding through a second fastener.

[0022] By adopting this structure, the effect of a closed star contactor can be achieved by connecting the star contactor module to the first contactor. Users can apply this star-delta contactor module to star-delta starting circuits or closed star contactor application scenarios.

[0023] In some embodiments of the present application, the first contactor also includes a first contactor housing, the first terminal block I portion extends to the first side of the first contactor housing, the star module housing is arranged on the first side of the first contactor housing, and the star module housing is connected to the first contactor housing.

[0024] This structure makes the connection between the first contactor and the star module housing more compact. At the same time, the star-delta contactor module formed in this way is lower in height than the star-delta contact device in the integrated star-delta starting switch in the prior art and is easy to disassemble for maintenance.

[0025] In some embodiments of the present application, it also includes an interlocking piece rotatably disposed in the first contactor housing or rotatably disposed in the star module housing; the first contact component and the second contact component form a mechanical interlock through the interlocking piece, the first contact support, and the second contact support, or the first contact component and the second contact component form a mechanical interlock through the interlocking piece, the first armature, and the second armature; the mechanical interlock is that when the first contact component is in the on state, the second contact component cannot be connected and is in the off state, and when the second contact component is in the on state, the first contact component cannot be connected and is in the off state.

[0026] By adopting the setting of the interlocking piece, the second contact assembly inside the first contactor can form a mechanical interlock with the first contact assembly in the star contactor module, so as to ensure that the circuit operates more stably.

[0027] In some embodiments of the present application, the interlocking member has a first locking portion and a second locking portion that are offset from the rotation center of the interlocking member; the first locking portion corresponds to the first contact support or the first armature, and the second locking portion corresponds to the second contact support or the second armature; when the first contact assembly is in a connected state, the interlocking member rotates under the action of the first contact support or the first armature, so that the second locking portion rotates to a position that limits the movement of the second contact support or the second armature, thereby preventing the second contact assembly from being connected; when the second contact assembly is in a connected state, the interlocking member, under the action of the second contact support or the second armature, causes the first locking portion to rotate to a position that limits the movement of the first contact support or the first armature, thereby preventing the first contact assembly from being connected.

[0028] The interlocking parts adopt the first locking part and the second locking part to achieve interlocking. Such a transmission structure is very streamlined and can switch back and forth according to the working status of different contactors (the different contactors here refer to the star contactor module and the first contactor). The switching is very smooth and the mechanical interlocking can be well achieved.

[0029] In some embodiments of the present application, an intermediate slider is also included, and the first contact component and the second contact component form a mechanical interlock through an interlocking piece, a first contact support, and a second contact support; the intermediate slider is slidingly arranged, and is arranged between the interlocking piece and the first contact support and / or the second contact support, and the working relationship between the interlocking piece and the first contact support and / or the second contact support is completed through the intermediate slider.

[0030] The design of the intermediate slider reduces the size requirements for the first contact support and the second contact support, and this effect is particularly obvious when the intermediate slider is used to realize the function between the interlocking member and the second contact support.

[0031] In some embodiments of the present application, an interlocking piece reset structure is also included. The interlocking piece reset structure is arranged next to the interlocking piece, one end of the interlocking piece reset structure abuts against the interlocking piece, and the other end abuts against the first contactor housing or the star module housing.

[0032] The setting of such a reset structure can achieve reset through the interlocking member reset structure when the interlocking member is driven.

[0033] A star-delta starting switch, comprising a second contactor and the above-mentioned star-delta contactor module; the second contactor comprises a second contactor housing and a third contact assembly, the third contact assembly comprises three third moving contacts, three third stationary contacts I, three third stationary contacts II, three second wiring boards I and three second wiring boards II, the third contact assembly has an on state and an off state; when in the on state, the third moving contact is in contact with the corresponding third stationary contact I and the third stationary contact II; when in the off state, the third moving contact is in contact with the corresponding third stationary contact I and the third stationary contact II. Contact I and the third static contact II are separated; the three second terminal blocks I are respectively conductively connected to the three third static contacts I, and the three second terminal blocks II are respectively conductively connected to the three third static contacts II; the three second terminal blocks I partially extend to one side of the second contactor housing, and the second terminal blocks II partially extend to the other side of the second contactor housing; the three second terminal blocks II correspond to the three first terminal blocks II one by one, and each second terminal block II is connected to the corresponding first terminal block II through a transition conductor, and the transition conductor is a soft connection or a hard connection; each transition conductor has a connection portion.

[0034] Through this structure, the above-mentioned star-delta contactor module can be combined with a second contactor to form a star-delta starting switch. When wiring, it is only necessary to electrically connect the second terminal block I of the second contactor to one end of the motor M winding, the wiring part to the three-phase power supply, and the first wiring section to the other end of the motor M winding, and then the star-delta starting switch can be connected to the starting circuit of the motor. When the second contactor is connected to the first wiring assembly of the star-delta contactor module at the same time, a star connection is formed. When the second contactor is connected to the second wiring assembly of the star-delta contactor module at the same time, a delta connection is formed. This star-delta starting switch has a relatively good degree of integration, which will facilitate the user to connect the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A three-dimensional diagram of a star contactor module according to Embodiment 1 of the present application is shown;

[0037] Figure 2 An exploded view of the star contactor module of Example 1 of the present application is shown;

[0038] Figure 3A structural schematic diagram of an implementation of an electromagnetic system in a star contactor module in the present application is shown;

[0039] Figure 4 A structural schematic diagram showing another implementation of the electromagnetic system in the star contactor module of the present application;

[0040] Figure 5 A structural schematic diagram of an implementation mode of a first moving contact and a short-circuit member in a star contactor module in the present application is shown;

[0041] Figure 6 A structural schematic diagram showing another implementation of the first moving contact and the short-circuit member in the star contactor module of the present application is shown;

[0042] Figure 7 A structural schematic diagram showing another embodiment of the first moving contact and the short-circuit member in the star contactor module of the present application is shown;

[0043] Figure 8 A structural schematic diagram showing another embodiment of the first moving contact and the short-circuit member in the star contactor module of the present application is shown;

[0044] Fig. 9 A structural schematic diagram showing an implementation of the first static conductive structure in the star contactor module of the present application;

[0045] Fig.10 A structural schematic diagram showing another implementation of the first static conductive structure in the star contactor module in the present application;

[0046] Fig.11 A structural schematic diagram showing another embodiment of the first static conductive structure in the star contactor module of the present application;

[0047] Fig.12 A structural schematic diagram showing another embodiment of the first static conductive structure in the star contactor module of the present application;

[0048] Fig.13 A cross-sectional view of a star contactor module in the present application is shown;

[0049] Fig.14 A three-dimensional diagram of a star-delta contactor module according to Embodiment 1 of the present application is shown;

[0050] Fig.15 The figure shows the internal structure of the star-delta contactor module of Example 1 of the present application;

[0051] Fig.16 A diagram showing the position relationship of the interlocking parts when the first contact assembly of Embodiment 1 of the present application is connected;

[0052] Fig.17A diagram showing the position relationship of the interlocking parts when the second contact assembly of Example 1 of the present application is connected;

[0053] Fig.18 A three-dimensional diagram of a star-angle start switch according to Embodiment 1 of the present application is shown;

[0054] Fig.19 A schematic diagram showing the internal structure of the star-delta starting switch of Example 1 of the present application is shown;

[0055] Fig. 20 A schematic diagram of the star-delta starting switch, three-phase power supply, and motor wiring of Example 1 of the present application is shown. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In the present application, unless otherwise clearly specified and limited, the main feature being "above" or "below" the second feature may mean that the main feature is in direct contact with the second feature, or that the main feature is in indirect contact with the second feature through an intermediate medium. Moreover, the main feature being "above", "above" and "above" the second feature may mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. The main feature being "below", "below" and "below" the second feature may mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is higher in level and has a lower electrical connection with the three-phase power supply than the second feature. Example

[0061] like Figure 1-Figure 13 As shown, an embodiment of the present application provides a star contactor module 100 , which includes a star module housing 101 , a first electromagnetic system 102 , a first contact support 103 and a first contact assembly 104 .

[0062] The star module housing 101 is mainly used to accommodate the first electromagnetic system 102, the first contact support 103, the first contact assembly 104 and other components. In this embodiment, the star module housing 101 includes a star module upper cover 101a and a star module lower seat 101b. The first electromagnetic system 102 and the first contact support 103 are accommodated in the space formed by the star module upper cover 101a and the star module lower seat 101b. The first contact assembly 104 can be partially beyond the star module housing 101 or completely accommodated in the star module housing 101 according to different specific settings. The specific composition of the first contact assembly 104 will be described in detail below. The star module upper cover 101a and the star module lower seat 101b can be fastened by screws to ensure the stability of the entire star module housing 101. Of course, in addition to this, a snap-on connection method can also be used. In addition to the upper and lower shells formed by the upper cover and the lower seat, the left and right shells can also be matched. In addition to the two-component method of the star module upper cover 101a and the star module lower base 101b, a single component or three components can also be used. Regardless of the specific structure of the star module housing 101, as long as it can form a stable space for installing the first electromagnetic system 102, the first contact support 103, the first contact assembly 104 and other components.

[0063] The first contact support 103 is longitudinally slidably disposed inside the star module housing 101 . The function of the first contact support 103 is to realize the connection and disconnection of the first contact assembly 104 .

[0064] The first electromagnetic system 102 essentially utilizes the principle of electromagnets, and includes a first coil 102a, a first frame 102b, a first armature 102c, and a first yoke 102d. The first coil 102a is wound around the first frame 102b, the first coil 102a surrounds the first yoke 102d, and the first armature 102c is configured to slide. When the first coil 102a is energized, the first coil 102a generates a magnetic field force, and the first armature 102c slides under the action of the magnetic field force. At this time, since the first contact support 103 and the first armature 102c are connected, the two will move synchronously. The first electromagnetic system 102 in the present application can adopt the electromagnet solution of a traditional contactor such as Figure 4 As shown, other electromagnet solutions are also included, such as Figure 3 shown.

[0065] The first contact assembly includes three first moving contacts 104a and three groups of first static conductive structures. Here, the three first moving contacts 104a are short-circuited by a short-circuit, that is, the three first moving contacts 104a always maintain electrical connection in the circuit. The first moving contact 104a is arranged on the first contact support 103, and the first moving contact 104a can be driven to move as the first contact support 103 moves.

[0066] Here, according to the different structures of the short-circuit parts, they are divided into soft connection, hard connection, or a combination of soft connection and hard connection. The soft connection method is relatively simple, such as Figure 5 As shown, a soft connection (such as a soft copper wire 105, of course, the soft connection here is not limited to copper) is welded on different first moving contacts 104a to connect the three first moving contacts 104a together in the circuit. There are relatively many ways to use hard connection, such as Figure 6 As shown, the first method is to use a conductive bar 105b formed independently of the three first moving contacts 104a, and then fix the conductive bar 105b to the first moving contacts 104a by screws, rivets, welding, etc., so that the three first moving contacts 104a are connected together in the circuit. Figure 7 As shown in FIG. 1 , the second method is that the conductive bar 105b is integrally formed with the first moving contact 104a, that is, the three first moving contacts 104a are an integral part, and the three first moving contacts 104a are connected together in the circuit. Another method is to use a combination of soft connection and hard connection to connect together, such as Figure 8As shown, that is, two of the first moving contacts 104a are connected together by a hard connection, and the other first moving contact 104a is connected to the two first moving contacts 104a by a soft connection (including being connected to both of the first moving contacts 104a by a soft connection, and also including being connected to one of the two first moving contacts 104a by a soft connection).

[0067] The first static conductive structure includes a first wiring segment 106a, a contact segment 106b and a second wiring segment 106c, where the first wiring segment 106a, the contact segment 106b and the second wiring segment 106c are always connected in the circuit. Here, the first wiring segment 106a and the second wiring segment 106c are used to connect with external wires or devices (here, the external refers to the outside of the star contactor module 100). In this embodiment, the first wiring segment 106a is set beyond the star module housing 101, and the second wiring segment 106c is located in the star module housing 101. Of course, the first wiring segment 106a and the second wiring segment 106c here can also be set in other ways. For example, the first wiring segment 106a and the second wiring segment 106c are both inside the star module housing 101 (only a hole needs to be opened on the housing to connect the external wires or terminal blocks of the device); or the first wiring segment 106a and the second wiring segment 106c are both outside the star module housing 101; or the second wiring segment 106c is outside the star module housing 101, and the first wiring segment 106a is inside the star module housing 101; either method is used as long as the wiring can be achieved.

[0068] The three contact segments 106b correspond one by one to the three first moving contacts 104a respectively, and are within the movement trajectory of the corresponding first moving contacts 104a. When the first contact support 103 slides, the first moving contact 104a and the contact segment 106b can be in contact and separation (because the sliding directions of the first contact support 103 are different, the contact and separation effects can be produced). When the contact segment 106b is in contact with the first moving contact 104a, the first contact assembly 104 is in a connected state. When the contact segment 106b is separated from the first moving contact 104a, the first contact assembly 104 is in a disconnected state.

[0069] According to the specific structure of the first static conductive structure, there are several situations as follows:

[0070] Case 1 is also the simplest solution, such as Fig. 9 As shown, the first wiring segment 106a, the contact segment 106b and the second wiring segment 106c are an integrally formed conductive bar, so that the three are naturally always connected in the circuit.

[0071] In the second scenario, the first wiring segment 106a, the contact segment 106b and the second wiring segment 106c are all formed separately, and then the first wiring segment 106a and the contact segment 106b are fixed or welded or softly connected by a first fastener (screw or rivet), and the contact segment 106b and the second wiring segment 106c are fixed or welded or softly connected by a first fastener (screw or rivet), so that the three can always be connected in the circuit. In order to make it more vivid, the soft connection method is used as shown in FIG. Fig.10 As shown, the welding method is as follows Fig.11 As shown, the first fastener (screw or rivet) is omitted in the figure.

[0072] Case three: This method is similar to case two, except that the connection position is changed. The first wiring segment 106a is connected to the second wiring segment 106c, and the contact segment 106b is connected to the first wiring segment 106a. The connection method is similar to case two, and the relevant drawings are not shown here.

[0073] Case 4 is similar to Case 2, except that the connection position is changed. The first wiring segment 106a is connected to the second wiring segment 106c, and the contact segment 106b is connected to the second wiring segment 106c. The connection method is similar to Case 2, and the relevant drawings are not shown here.

[0074] Situation 5: In this way, two of the first wiring segment 106a, the contact segment 106b, and the second wiring segment 106c are integrally formed, and the other one is fixed to the two integrally formed structures by a first fastener, welded, or softly connected, so that the three are always connected in the circuit. Fig.12 As shown, the first wiring segment 106a and the contact segment 106b are integrally formed, and the second wiring segment 106c is connected thereto by a soft connection, and the related drawings of other examples are omitted.

[0075] The connection of the first wiring assembly is described above, and there are various structures for disconnecting the first wiring assembly. The disconnection of the first wiring assembly is described below through two groups of schemes.

[0076] like Figure 4As shown, in this embodiment, the reset structure is a reset spring 107, and in this embodiment, the reset spring 107 is a compression spring, and the reset spring 107 here is held between the first armature 102c and the first frame 102b. In this way, when the first electromagnetic system 102 is powered on (when the first coil 102a is powered on), the first armature 102c and the first contact support 103 will move to achieve the connection of the first contact assembly 104, and the reset spring 107 will be compressed; when the first electromagnetic system 102 is powered off (when the first coil 102a is powered on), the magnetic field force disappears, and the first armature 102c and the first contact support 103 will move under the action of the reset spring 107 to achieve the disconnection of the first contact assembly 104. Of course, the reset spring 107 here is not limited to a compression spring, and other forms such as a tension spring, a spring sheet, a disc spring, a torsion spring, etc. can also be used. Similarly, the abutment position of the reset spring 107 may be that one end abuts against the first armature 102c, and the other end abuts against a statically arranged component such as the inner wall of the star module housing 101, the yoke 102d, etc. Similarly, the abutment position of the reset spring 107 may be that one end abuts against the first contact support 103, and the other end abuts against a statically arranged component such as the frame, the inner wall of the star module housing 101, the yoke 102d, etc. Figure 3 As shown, one end of the return spring 107 abuts against the first contact support 103, and the other end abuts against the star module housing 101 (not shown in the figure).

[0077] The star contactor module 100 is introduced above. The following is an introduction to the scheme of using the star contactor module 100 in combination with a common contactor. Such use can form a switching device similar to a closed star contactor.

[0078] like Figure 14-17 As shown, a star-delta contactor module comprises a first contactor 200 and the star contactor module 100 mentioned above.

[0079] The first contactor 200 includes a first contactor housing 201, a second electromagnetic system 202 (here to distinguish it from the first electromagnetic system 102, not specifically indicating that the contactor has two electromagnetic systems), a second contact assembly (here to distinguish it from the first contact assembly 104, not specifically indicating that the contactor has two groups of contact assemblies) and a second contact support 203 (here to distinguish it from the first contact support 103, not specifically indicating that the contactor has two contact supports).

[0080] The first contactor housing 201 is used to accommodate components such as the second electromagnetic system 202 and the second contact assembly.

[0081] The second electromagnetic system 202 is an electromagnetic system of a common contactor in the art, including an armature (a second armature), a coil, a yoke, a frame, a reset spring, etc., which will not be described in detail here.

[0082] The second contact support 203 is connected to the armature of the second electromagnetic system 202, and the two are in a synchronous motion relationship.

[0083] The second contact assembly is also a contact assembly of a common contactor in the art, and includes three second moving contacts 204a, three second stationary contacts I 204b, three second stationary contacts II 204c, three first wiring boards I 204d, and three first wiring boards II 204e. Each second moving contact 204a corresponds to a second stationary contact I 204b and a second stationary contact II 204c. The second moving contact 204a is arranged on the second contact support 203. With the movement of the second contact support 203, the second moving contact 204a is simultaneously in contact with the second stationary contact I 204b and the second stationary contact II 204c, and the second moving contact 204a is simultaneously separated from the second stationary contact I 204b and the second stationary contact II 204c, that is, the corresponding second contact assembly is in a connected state and a disconnected state. The three first wiring boards Ⅰ204d are respectively conductively connected to the three second static contacts Ⅰ204b, where the conductive connection means that the first wiring board Ⅰ204d and the second static contact Ⅰ204b can be separate and then connected together by fasteners, welding, etc., or the two can be an integral part. The three first wiring boards Ⅱ204e are respectively conductively connected to the three second static contacts Ⅱ204c, where the conductive connection is the same as above.

[0084] The three first wiring boards 1204d and the three second wiring segments 106c are in one-to-one correspondence, and the two are connected by a second fastener, which is a screw. Of course, other than this, a soft connection or welding can also be used.

[0085] In order to make the star-delta contactor module look more compact, the star module housing 101 can also be connected to the first contactor housing 201. Specifically, the first terminal block I 204d partially extends to the first side of the first contactor housing 201, and the star module housing 101 is arranged on the first side of the first contactor housing 201. The star module housing 101 and the first contactor housing 201 are connected by bolts. Of course, in addition to the bolts 205, they can also be fastened by clamping.

[0086] In order to achieve the interlocking of the above structure, it also includes rotating the interlocking member 206 disposed in the star module housing 101. The interlocking member 206 here mainly plays the role of being associated with the first contact support 103 and the second contact support 203 to achieve the mechanical interlocking between the first contact assembly 104 and the second contact assembly. That is, when the first contact assembly 104 is in the on state, the second contact assembly cannot be connected and is in the off state, and when the second contact assembly is in the on state, the first contact assembly 104 cannot be connected and is in the off state.

[0087] There are many specific implementation methods. The following example is a preferred structure. There are two interlocking members 206, both of which are connected to the star module housing 101 in rotation through a pin. The interlocking member 206 includes a first locking portion 206a and a second locking portion 206b that deviate from the rotation center of the interlocking member 206. The second locking portion 206b here corresponds to the second contact support 203 (the second locking portion 206b passes through the through hole 2031 on the first contactor housing 201 and corresponds to the second contact support 203), and the first locking portion 206a corresponds to the first contact support 103. When the first electromagnetic system 102 is powered on, the first contact support 103 slides downward, and the first locking portion 206a moves under the action of the first contact support 103, so that the second locking portion 206b deflects to limit the position of the movement of the second contact support 203. Since the first electromagnetic system 102 is still powered on, the second contact support 203 will not slide downward under the restriction of the second locking portion 206b, that is, the second contact assembly will not be connected. Similarly, when the second electromagnetic system 202 is powered on, the second contact support 203 slides downward, and the second locking portion 206b moves under the action of the second contact support 203, so that the first locking portion 206a deflects to limit the movement of the first contact support 103. Since the second electromagnetic system 202 is still powered on, the first contact support 103 will not slide downward under the restriction of the first locking portion 206a, that is, the first contact assembly 104 will not be connected. In this way, the mechanical interlocking is completed.

[0088] Of course, although the first locking portion 206a in the above example has a direct action relationship with the first contact support 103, it is not limited to the direct action relationship, and should also include an indirect action relationship, which is conducive to the use of an intermediate slider 207 (refer to the relationship between the second locking portion 206b and the second contact support 203) between the first locking portion 206a and the first contact support 103, and the intermediate slider 207 is used to complete the mechanical interlocking. Similarly, the second locking portion 206b should not be limited to being understood as a direct action relationship with the second contact support 203, and should also include the use of intermediate components to complete the mechanical interlocking, such as Figure 16-17As shown, there is also an intermediate slider 207 below the second contact support 203. When the second electromagnetic system 202 is powered on, the slider can be pushed by the second contact support 203, thereby driving the second locking portion 206b to move. When the first electromagnetic system 102 is powered on, the second locking portion 206b can abut against the intermediate slider 207, and the intermediate slider 207 is used to limit the movement of the second contact support 203.

[0089] Of course, although the above example is a case of two interlocking parts 206, a single interlocking part 206 or multiple interlocking parts 206 can also be used according to the different product specifications. In addition, the first armature 102c and the first contact support 103 move synchronously, and the second armature and the second contact support 203 also move synchronously, so the interlocking part 206 can also form a mechanical interlock in a manner corresponding to the first armature 102c and the second armature. The specific solution can refer to the above-mentioned first contact support 103 and the second contact support 203, which will not be repeated here.

[0090] Here, in order to make the interlocking part 206 have a reset effect, an interlocking part reset structure 2061 is provided between the interlocking part 206 and the star module housing 101. The interlocking part reset structure 2061 here is a spring sheet, one end of which abuts against the notch on the interlocking part 206, and the other end abuts against the star module housing 101. When the first electromagnetic system 102 is powered on, the first contact support 103 slides downward to push the interlocking part 206 to rotate, and the interlocking part reset structure 2061 is deformed. When the first electromagnetic system 102 is powered off, the interlocking part reset structure 2061 drives the interlocking part 206 to reset. The interlocking part reset structure 2061 here is not limited to a spring sheet, but can also be a compression spring, a torsion spring, a tension spring, etc.

[0091] Such an interlocking member 206 may also be disposed in the first contactor housing 201. Of course, this will make a significant modification to the first contactor 200, but the interlocking effect can also be achieved.

[0092] The above introduces the star-delta contactor module, and the following introduces the star-delta starting switch.

[0093] like Figure 18-20 As shown, a star-delta starting switch includes a second contactor 300 and the star-delta contactor module mentioned above.

[0094] The second contactor 300 includes a second contactor housing 301, a third electromagnetic system 302 (here to distinguish it from the first and second electromagnetic systems 202, not specifically indicating that the contactor has three electromagnetic systems), a third contact assembly (here to distinguish it from the first and second contact assemblies, not specifically indicating that the contactor has three groups of contact assemblies) and a third contact support 303 (here to distinguish it from the first and second contact supports 203, not specifically indicating that the contactor has three contact supports).

[0095] The second contactor housing 301 is used to accommodate components such as the third electromagnetic system 302 and the third contact assembly.

[0096] The third electromagnetic system 302 is an electromagnetic system of a common contactor in the art, including an armature, a coil, a yoke 102d, a frame, a reset spring, etc., which will not be described in detail here.

[0097] The third contact support 303 is connected to the armature of the third electromagnetic system 302, and the two are in a synchronous motion relationship.

[0098] The third contact assembly is also a contact assembly of a common contactor in the art, and includes three third moving contacts 304a, three third stationary contacts I 304b, three third stationary contacts II 304c, three second wiring boards I 304d, and three second wiring boards II 304e. Each third moving contact 304a corresponds to a third stationary contact I 304b and a third stationary contact II 304c, and the third moving contact 304a is arranged on the third contact support 303. With the movement of the third contact support 303, the third moving contact 304a is simultaneously in contact with the third stationary contact I 304b and the third stationary contact II 304c, and the third moving contact 304a is simultaneously separated from the third stationary contact I 304b and the third stationary contact II 304c, that is, the corresponding third contact assembly is in a connected state and a disconnected state. The three second wiring boards I304d are respectively conductively connected to the three third static contacts I304b, where the conductive connection means that the second wiring board I304d and the third static contact I304b can be separate and then connected together by fasteners, welding, etc., or the two can be an integral part. The three second wiring boards II304e are respectively conductively connected to the three third static contacts II304c, where the conductive connection is the same as above.

[0099] The three second wiring boards I 304d are exposed from one side of the second contactor housing 301, and the three second wiring boards II 304e are exposed from the other side of the second contactor housing 301. The three second wiring boards II 304e here correspond to the three first wiring boards II 204e one by one, and each second wiring board II 304e is connected to the corresponding first wiring board II 204e through a transition conductor 305. In this embodiment, the transition conductor 305 is a hard connection, that is, a conductive bar, and each transition conductor 305 has a connection portion 305a. Of course, in addition to the hard connection, the transition conductor 305 here can also be a soft connection.

[0100] With such a structure, the user can connect it to the winding of the motor and the three-phase power supply to form a star-delta starting circuit. Specifically, the three wiring parts 305a are connected to the three-phase power supply respectively, the three second wiring boards I 304d are connected to one end of the motor winding, and the three first wiring segments 106a are connected to the other end of the three motor windings. When the first contact assembly 104 and the third contact assembly are both connected, a star connection is presented. When the second contact assembly and the third contact assembly are both connected, a delta connection is presented.

[0101] The first contactor 200 and the second contactor 300 shown in the drawings in the above exemplary embodiments are contactors with relatively large current parameter specifications. In addition, this structure can also use contactors with smaller current parameter specifications.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0103] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A star contactor module, characterized in that: The invention comprises a star module housing, a first electromagnetic system, a first contact support, a first contact assembly and a reset structure; the first contact assembly comprises three first moving contacts and three groups of first static conductive structures, the first moving contacts are arranged on the first contact support and move with the first contact support, and the three first moving contacts are short-circuited by a short-circuit member; each first static conductive structure comprises a first wiring segment, a contact segment and a second wiring segment, and the first wiring segment, the contact segment and the second wiring segment in the same first static conductive structure always keep a connected state in the circuit; the first electromagnetic system comprises a first armature arranged for sliding, the first contact support and the first contact assembly are connected to each other, and ... The first armature is set for synchronous movement, and the three contact segments are respectively located under the three first moving contacts. The first contact assembly is connected and disconnected by the sliding of the first contact support; when the first electromagnetic system is energized, the first armature slides under the action of the magnetic field force of the first electromagnetic system, so that the first moving contact contacts the contact segment, thereby connecting the first contact assembly; the reset structure is a reset spring, one end of the reset spring is against the first contact support or the first armature, and the reset spring is used to drive the first contact support to reset after the first electromagnetic system is powered off, so that the first moving contact is separated from the contact segment, thereby disconnecting the first contact assembly.

2. A star contactor module according to claim 1, characterized in that: The short-circuit is a soft connection, and the three first moving contacts are connected together through the soft connection; Or, the short-circuit is a hard connection, and the three first moving contacts are connected together by a hard connection; Alternatively, the short-circuit is a combination of a soft link and a hard link, wherein the two first moving contacts are connected via a hard link, and another first moving contact is connected to one or both of the two first moving contacts via a soft link.

3. A star contactor module according to claim 1, characterized in that: The first wiring segment, the contact segment and the second wiring segment are an integrally formed conductive bar, so that the three segments are always connected in the circuit; Or, among the first wiring segment, the contact segment and the second wiring segment, the first wiring segment and the contact segment are fixed by a first fastener, welded or connected by a soft connection, and the contact segment and the second wiring segment are fixed by a first fastener, welded or connected by a soft connection, so that the three are always connected in the circuit; Or, among the first wiring segment, the contact segment and the second wiring segment, the first wiring segment and the second wiring segment are fixed by a first fastener, fixed by welding or connected by a soft connection, and the contact segment and the first wiring segment are fixed by a first fastener, fixed by welding or connected by a soft connection, so that the three are always connected in the circuit; Or, among the first wiring segment, the contact segment and the second wiring segment, the first wiring segment and the second wiring segment are fixed by a first fastener, fixed by welding or connected by a soft connection, and the contact segment and the second wiring segment are fixed by a first fastener, fixed by welding or connected by a soft connection, so that the three are always connected in the circuit; Alternatively, two of the first wiring segment, the contact segment, and the second wiring segment are integrally formed, and the other one is fixed to the two integrally formed structures by a first fastener, welded, or softly connected, so that the three are always connected in the circuit.

4. A star-delta contactor module, characterized in that: It includes a first contactor and a star contactor module as described in any one of claims 1 to 3; the first contactor includes a second contact assembly, the second contact assembly includes three second moving contacts, three second static contacts I, three second static contacts II, three first terminal boards I and three first terminal boards II, and the second contact assembly has an on state and an off state; when in the on state, the second moving contact is in contact with the corresponding second static contact I and second static contact II; when in the off state, the second moving contact is separated from the corresponding second static contact I and second static contact II; the three first terminal boards I are respectively conductively connected to the three second static contacts I, the three first terminal boards II are respectively conductively connected to the three second static contacts II, and the three second wiring segments are respectively arranged in a one-to-one correspondence with the three first terminal boards I and are fastened or softly connected or fixed by welding through a second fastener.

5. A star-delta contactor module according to claim 4, characterized in that: The first contactor further comprises a first contactor housing, the first terminal block I partly extends to a first side surface of the first contactor housing, the star module housing is arranged on the first side surface of the first contactor housing, and the star module housing is connected to the first contactor housing.

6. A star-delta contactor module according to claim 5, characterized in that: It also includes an interlocking piece rotatably arranged in the first contactor housing or rotatably arranged in the star module housing; the first contact component and the second contact component form a mechanical interlock through the interlocking piece, the first contact support, and the second contact support, or the first contact component and the second contact component form a mechanical interlock through the interlocking piece, the first armature, and the second armature; the mechanical interlock is that when the first contact component is in the on state, the second contact component cannot be connected and is in the off state, and when the second contact component is in the on state, the first contact component cannot be connected and is in the off state.

7. A star-delta contactor module according to claim 6, characterized in that: The interlocking member has a first locking portion and a second locking portion which are offset from the rotation center of the interlocking member; the first locking portion corresponds to the first contact support or the first armature, and the second locking portion corresponds to the second contact support or the second armature; when the first contact assembly is in a connected state, the interlocking member rotates under the action of the first contact support or the first armature, so that the second locking portion rotates to a position that limits the movement of the second contact support or the second armature, thereby preventing the second contact assembly from being connected; when the second contact assembly is in a connected state, the interlocking member, under the action of the second contact support or the second armature, causes the first locking portion to rotate to a position that limits the movement of the first contact support or the first armature, thereby preventing the first contact assembly from being connected.

8. A star-delta contactor module according to claim 7, characterized in that: It also includes an intermediate slider, and the first contact component and the second contact component form a mechanical interlock through an interlocking piece, a first contact support, and a second contact support; the intermediate slider is slidingly arranged, and is arranged between the interlocking piece and the first contact support and / or the second contact support, and the interaction relationship between the interlocking piece and the first contact support and / or the second contact support is completed through the intermediate slider.

9. A star-delta contactor module according to claim 6, characterized in that: It also includes an interlocking piece reset structure, which is arranged beside the interlocking piece. One end of the interlocking piece reset structure abuts against the interlocking piece, and the other end abuts against the first contactor housing or the star module housing.

10. A star-delta starting switch, characterized in that: It comprises a second contactor and a star-delta contactor module as claimed in any one of claims 4 to 9; The second contactor comprises a second contactor housing and a third contact assembly, the third contact assembly comprises three third moving contacts, three third stationary contacts I, three third stationary contacts II, three second wiring boards I and three second wiring boards II, the third contact assembly has an on state and an off state; when in the on state, the third moving contact is in contact with the corresponding third stationary contact I and third stationary contact II; when in the off state, the third moving contact is separated from the corresponding third stationary contact I and third stationary contact II; the three second wiring boards I are respectively conductively connected to the three third stationary contacts I, and the three second wiring boards II are respectively conductively connected to the three third stationary contacts II; The three second terminal blocks I partially extend to one side of the second contactor housing, and the second terminal block II partially extends to the other side of the second contactor housing; The three second wiring boards II correspond to the three first wiring boards II one by one. Each second wiring board II is connected to the corresponding first wiring board II via a transition conductor, which is a soft connection or a hard connection. Each transition conductor has a connection portion.

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